DE102019210193A1 - Energy storage module - Google Patents

Abstract

The present invention relates to an energy storage module (100), in particular an energy storage module (100) for a traction battery (101) of an electric or hybrid vehicle. The present invention is based on the general idea that at least one intermediate plate (600) of the energy storage module (100) is materially bonded is connected to a housing (200) of the energy storage module (100).

Description

The present invention relates to an energy storage module, in particular an energy storage module for a traction battery of an electric or hybrid vehicle. The invention also relates to an intermediate plate for an energy storage cell stack of such an energy storage module. The invention also relates to an energy storage cell stack with such an intermediate plate. The invention also relates to a traction battery for an electric or hybrid vehicle and a temperature control system for such a traction battery.

In order to achieve a higher level of acceptance of electric or hybrid vehicles in the end customer sector, it is particularly important that the required charging time until a traction battery of an electric or hybrid vehicle is fully recharged is as short as possible. A shortening of the charging period is possible, for example, by increasing the electrical power supplied via a corresponding charging station. As a result of this increased electrical power, the traction battery experiences an increased thermal load, so that an appropriate temperature control of the traction battery is necessary during the charging process. Even when the electric or hybrid vehicle is in motion, the temperature of the traction battery must be controlled, i.e. cooled or heated as required, in order to operate the individual battery cells in an optimal temperature profile and thus achieve optimal performance and service life.

Direct temperature control of an energy storage cell stack of the traction battery in which the energy storage cell stack is wetted directly by a temperature control fluid is suitable for dissipating such thermal loads on the traction battery. The disadvantage of direct temperature control, however, is that the temperature control fluid, in particular when the traction battery accelerates and / or the temperature control system malfunctions, can lead to increased internal pressure in the energy storage module, so that these energy storage modules require a corresponding housing with a certain housing wall thickness in order to accommodate it To withstand the internal pressure of the temperature control fluid. This leads to a high total weight of the traction battery, which has a negative effect on the driving range of the electric or hybrid vehicle, for example.

The present invention is based on the object of specifying an improved or at least an alternative embodiment for an energy storage module of the type mentioned, which has sufficient mechanical resistance with simultaneous weight reduction, in particular at a given internal pressure of a temperature control fluid.

According to the invention, this problem is solved by the subjects of the independent claims. Advantageous embodiments are the subject of the dependent claims.

The present invention is based on the general idea that at least one intermediate plate of the energy storage module is cohesively connected to a housing of the energy storage module.

The energy storage module according to the invention, which is designed in particular as an energy storage module for a traction battery of an electric or hybrid vehicle, has a housing. The housing comprises a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior.

At least one energy storage cell stack is arranged in the housing interior. The housing can have at least one temperature control fluid inlet for a temperature control fluid to flow in. The housing can have at least one temperature control fluid outlet for a temperature control fluid to flow out. The housing can be penetrated by electrical contact means for making electrical contact with the energy storage cell stack, such electrical contact means being introduced into the housing in a fluid-tight manner and enabling electrical power to be transmitted to the surroundings of the housing. The housing can be formed completely or in sections from plastic material and / or from a metallic material and / or from a composite material.

It can be provided that a plurality of energy storage cell stacks are arranged in the housing interior. It can be provided that the energy storage module has a plurality of energy storage cell stacks and forms the traction battery itself.

The at least one energy storage cell stack has a plurality of energy storage cells which are arranged along a stack axis. Furthermore, the at least one energy storage cell stack has a clamping device for bracing the energy storage cells against one another along the stack axis. At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell that is two to one another along the stack axis having spaced-apart large areas, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell which delimits an inner volume of the energy storage cell in a fluid-tight manner from the surroundings. At least one energy storage cell can be designed as a lithium-ion accumulator, in particular as a lithium-polymer accumulator.

The stack axis can be aligned parallel to the surface normal vector of at least one large surface. Several energy storage cells can be aligned along the stack axis in such a way that the large areas of two adjacent energy storage cells are opposite one another. The stack axis and the surface normal vectors of the large areas of all energy storage cells of an energy storage cell stack can coincide with a common straight line in space.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are formed at least in sections by the housing inner wall and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the energy storage cells, so that the energy storage cells can be directly wetted by the temperature control fluid. The temperature control fluid path can be fluidically connected to the at least one temperature control fluid inlet and the at least one temperature control fluid outlet. The temperature control fluid path can provide direct temperature control of the energy storage cell stack and / or the energy storage cells. Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid.

The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.
At least one intermediate plate is arranged between at least two adjacent energy storage cells with respect to the stack axis. The intermediate plate can have an extension along the stack axis which is smaller than the distance between two large areas of an energy storage cell along the stack axis. The intermediate plate can at least partially have an extension along a vertical axis that is greater than the extension of an energy storage cell along the vertical axis.

It can be provided that between all adjacent energy storage cells with respect to the stack axis at least one Intermediate plate is arranged. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The at least one intermediate plate forms at least one connecting section with a connecting surface, the connecting surface being connected with a material fit to a partial section of the housing inner wall. Before a material connection of the connection surface with a section of the housing inner wall, the connection surface is in contact with the section of the housing inner wall. The energy storage cell stack of the energy storage module is designed at least in sections to absorb tensile forces and / or compressive forces in the energy storage module via this material connection between the connecting surface and the inner wall of the housing. As a result, the wall thickness of the housing can be reduced without the mechanical resistance being impaired, so that the overall weight of the energy storage module is reduced while the mechanical resistance remains the same.

The connecting surface of the connecting section can be formed at least partially by at least one guide device. The connecting surface of the connecting section can extend continuously or in sections with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The connecting surface of the connecting section can form a plurality of welding domes which are arranged at a distance from one another in the circumferential direction of the intermediate plates. A welding dome can be dome-like and / or hemispherical and / or cone-like.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

It can be provided that at least one area of the outside of the housing, which lies opposite the subsection of the housing inner wall that is materially connected to the connecting surface, is bordered at least in sections by structural ribs. It can be provided that all areas of the outside of the housing which lie opposite the subsections of the housing inner wall that are cohesively connected to the connecting surfaces are each bordered at least in sections by structural ribs. If a connecting surface is designed as a weld dome, the cohesively connected subsection of the housing inner wall and the area of the outside of the housing opposite this subsection can essentially form a circular and / or elliptical delimiting contour. The circular and / or elliptical delimiting contour can be delimited completely by the structural ribs, the structural ribs essentially extending away from the outside of the housing and thus forming a cylinder-like receptacle. This receptacle can be designed, for example, as a positioning element for positioning a tool to produce a material connection. Such a tool can for example be a welding tool and / or an ultrasonic welding tool.

The areas of the outside of the housing that lie opposite the subsections of the housing inner wall that are cohesively connected to the connecting surfaces can be formed at positions on the outside of the housing at which structural ribs extending in the circumferential direction and structural ribs extending with respect to the stacking axis would penetrate and / or penetrate. For example, four structural ribs can open into at least one cylinder-like receptacle. In this case, the structural ribs can be arranged at a distance from one another, for example, with respect to a circumferential direction of the cylinder-like receptacle, in particular at a substantially equidistant distance. With four structural ribs opening into the cylinder-like receptacle, the structural ribs can each be arranged offset by 90 ° with respect to the circumferential direction of the cylinder-like receptacle and / or spaced apart from one another.

Here, joints and / or connection surfaces can be designed in such a way that the connection can be established from the outside with respect to the housing by means of a welding process. As a result, a connection can be established without an additional interruption of the housing and thus form a sealing point in the housing. The connection of intermediate plates to the housing by means of ultrasonic welding has the advantage that, due to the joining geometries and / or connecting surfaces of the intermediate plate, it can be designed in such a way that they can bridge very high joining tolerances.

In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.
The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid, and form, for example, an IPX6K and / or IPX9K-tight unit.

In an advantageous development of the solution according to the invention, it is provided that the housing has a housing cover and a housing shell, the housing shell forming a housing bottom which is arranged along a vertical axis at a distance from the housing cover. The housing shell can have a plurality of side walls which can be arranged circumferentially around the housing base. The housing cover and / or the housing base can each be designed in the form of a plate. The vertical axis can be oriented essentially transversely to the stack axis. A transverse axis is defined which is oriented transversely to the vertical axis and transversely to the stack axis.

A partial section of the housing inner wall is formed by an inner wall of the housing cover, a partial section of the housing inner wall being formed by an inner wall of the housing bottom.

The at least one intermediate plate forms at least one connection section on the cover side with a connection surface on the cover side. Furthermore, the at least one intermediate plate forms at least one bottom-side connecting section with a bottom-side connecting surface. The connection surface on the cover side is materially connected to a section of the inner wall of the cover and the connection surface on the base is connected to a section of the inner wall of the base with a material fit. The connection section on the cover side and the connection section on the bottom are connected at least via a material section of the intermediate plate in such a way that the intermediate plate is designed to absorb tensile forces acting along the vertical axis. In other words, the intermediate plate forms a tie rod for absorbing tensile forces.

As a result, forces that act on the base and the cover due to the internal pressure of the temperature control fluid can be absorbed by the intermediate plate. In particular, forces acting along the vertical axis are absorbed by the intermediate plate. As a result, the housing, in particular the housing cover, the housing shell and / or the housing base can be designed with a reduced material thickness, so that the total weight of the energy storage module can be reduced.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate is designed as a tie rod for absorbing tensile forces and / or compressive forces along the vertical axis.

As a result, forces that act on the base and the cover due to the internal pressure of the temperature control fluid can be absorbed by the intermediate plate. In particular, forces acting along the vertical axis are absorbed by the intermediate plate. As a result, the housing, in particular the housing cover, the housing shell and / or the housing base can be designed with a reduced material thickness, so that the total weight of the energy storage module can be reduced.

In an advantageous further development of the solution according to the invention, it is provided that the at least one intermediate plate is formed entirely from a plastic material, or that the at least one intermediate plate is partially formed from a plastic material, the connection surface, in particular the cover-side connection surface and / or the base-side connection surface, is formed from a plastic material. This allows a simple and inexpensive material connection can be achieved by means of ultrasonic welding.

In a further advantageous embodiment of the solution according to the invention, it is provided that the section of the inner wall of the housing that is cohesively connected to the connection surface is formed from a plastic material, and / or that the section of the inner cover wall that is cohesively connected to the connection surface on the cover is made from a plastic material is formed, and / or that the partial section of the bottom inner wall, which is cohesively connected to the bottom-side connecting surface, is formed from a plastic material. In this way, a simple and inexpensive material connection can be achieved by means of ultrasonic welding.

In an advantageous development of the solution according to the invention, it is provided that the connection surface is welded to the section of the housing inner wall, in particular ultrasonically welded, and / or that the cover-side connection surface is welded, in particular ultrasonically welded, to the section of the cover inner wall, and / or that the bottom-side The connection surface is welded to the section of the inner bottom wall, in particular ultrasonically welded. This enables a simple and inexpensive material connection to be achieved.

In a further advantageous embodiment of the solution according to the invention, it is provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. In this way, a temperature control fluid path is formed which provides maximum wetting of the energy storage cell stack and / or the energy storage cells, so that the most homogeneous temperature control possible can take place. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized.

In an advantageous development of the solution according to the invention it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate.

The intermediate plate body can form at least one wall of the expansion space. At least one guide device can be formed on the edge-side spacer element. At least one guide device can be formed integrally through the edge-side spacer element.

The edge-side spacer element can have a first contact surface and a second contact surface spaced apart therefrom along the stacking direction. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact area can at least partially contact a large area of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element with respect to the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimum range in terms of the stress ratio between the required mechanical resistance and the weight reduction. The edge-side spacer element can be designed to extend partially in the circumferential direction. The edge-side spacer element can be designed to extend completely in the circumferential direction. The edge-side spacer element can have several partial spacer elements which are arranged at a distance from one another along the circumferential direction.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have at least one sub-section or several sub-sections which have an essentially identical or varying wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis. The intermediate plate and / or the intermediate plate body can have a minimum wall thickness with respect to the stack axis in order to form an expansion space. This minimum wall thickness with respect to the stack axis can be in the range between 0.1 mm and 4 mm in order to enable sufficient deformation of the cells and at the same time to ensure sufficient mechanical resistance.

The edge-side spacer element can form a frame body, the outer circumferential contour of which essentially corresponds to an outer circumferential contour of a large area of an energy storage cell. Such a frame body can be designed at least in sections as a hollow body or solid body. The edge-side spacer element, in particular in the form of a frame body, can delimit the intermediate plate body in a completely surrounding manner.

The intermediate plate and / or the intermediate plate body can have several partial sections spaced apart from one another. The subsections can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The subsections can be aligned essentially parallel to one another.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate and / or the intermediate plate body at least partially forms an intermediate temperature control fluid path that can be fluidly connected to at least one temperature control fluid path of an energy storage module, and / or that the intermediate plate and / or the edge-side spacer element form at least one temperature control fluid opening.

The energy storage module can have at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by a housing inner wall of a housing of the energy storage module and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the energy storage cells, so that the energy storage cells can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the cell monitoring system, so that the cell monitoring system can be directly wetted by the temperature control fluid.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid. At least one guide device can be fluidically connected to at least one temperature control fluid opening.

In particular when using a temperature control liquid, the expansion space offers the advantage that the flow rate of the temperature control liquid in the area of the central axis is reduced by the enlarged diameter of the intermediate temperature control fluid path. The contact time for wetting the large areas of the energy storage cells can thus be maximized in order to improve the temperature control of the energy storage cell and thus to increase its service life.

Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

It can be provided that the intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs which are arranged at a distance from one another, with intermediate spaces being formed between the connecting webs. These intermediate spaces can each be fluidically connectable to a temperature control fluid path of the energy storage module via two temperature control fluid openings that are spaced apart with respect to the vertical axis. A first temperature control fluid opening, which can preferably be arranged opposite a housing bottom of the energy storage module, can form a temperature control fluid inlet. A second temperature control fluid opening, which can preferably be arranged opposite a housing cover of the energy storage module, can form a temperature control fluid outlet. The temperature control fluid inlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis. The temperature control fluid outlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis.

In an advantageous development of the solution according to the invention, it is provided that at least one intermediate plate is arranged between each two adjacent energy storage cells of the energy storage cell stack. As a result, the internal pressure load from the temperature control fluid can be evenly distributed with respect to the stack axis. In this way, for example, local bulges in the housing can be prevented. In addition, if an individual intermediate plate is impaired, the overall function of the energy storage module is not significantly impaired.

The invention also relates to an energy storage cell stack for an energy storage module according to the invention. The energy storage cell stack has a plurality of energy storage cells that are arranged along a stack axis, with at least one intermediate plate being arranged with respect to the stack axis between at least two adjacent energy storage cells, the at least one intermediate plate forming at least one connecting section with a connecting surface. The at least one intermediate plate is designed in such a way that the connection surface is in contact with a section of the housing inner wall when the energy storage cell stack is inserted in the energy storage module before a connection process. In a subsequent connection process, an integral connection is formed between the connection surface and the subsection of the housing inner wall.

The energy storage cell stack can have a tensioning device for tensioning the energy storage cells against one another along the stack axis.

With regard to the further design of the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the preceding and / or subsequent explanations, the preceding and / or subsequent features of the energy storage cells, the at least one intermediate plate and the energy storage cell stack being provided by the energy storage cell stack according to the invention can be designed individually or in any combination.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, wherein the intermediate plate forms at least one connecting section with a connecting surface, the intermediate plate being designed so that the connecting surface is in contact with a section of the housing inner wall, when the energy storage cell stack is inserted in the energy storage module before a connection process. In a subsequent connection process, an integral connection is formed between the connection surface and the subsection of the housing inner wall.

With regard to the further design of the intermediate plate, reference is made to the preceding and / or following explanations, wherein the preceding and / or subsequent features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. The housing cover on the electric or hybrid vehicle can thus be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

It can be provided that a subsection, in particular a subsection of a vehicle body, of the electric or hybrid vehicle is designed in such a way that a support structure is formed between at least two energy storage cell stacks, which separates the at least two energy storage cell stacks from one another, for example in the event of an accident.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that the one common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common battery housing on the electric or hybrid vehicle is arranged between at least one energy storage module and a roadway.

The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveying device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

The invention also relates to a method for producing a traction battery according to the invention and / or an energy storage module according to the invention, in which an energy storage cell stack is inserted into a housing of an energy storage module in such a way that a connecting surface of at least one connecting section of at least one intermediate plate is in contact with a section of the housing inner wall. With a welding process, in particular an ultrasonic welding process, the connection surface is connected with a material fit to the partial section of the inner wall of the housing.

The joint and / or connection surfaces can be designed in such a way that the connection can be established from the outside with respect to the housing by means of a welding process. As a result, a connection can be established without an additional interruption and thus form a sealing point in the housing. The Connection of intermediate plates to the housing by means of ultrasonic welding has the advantage that, due to the joining geometries and / or connecting surfaces, the intermediate plate can be designed in such a way that it can bridge very high joining tolerances.

The following exemplary embodiments are based on the general idea of designing terminal bridge holders as identical parts so that the energy storage cell stack forms at least one cell monitoring system. The following exemplary embodiments can each be combined individually or in any combination with the preceding exemplary embodiments.

The energy storage cell stack according to the invention, which can be designed in particular for an energy storage module of a traction battery of an electric or hybrid vehicle, has a plurality of energy storage cells which are arranged along a stack axis. Furthermore, the energy storage cell stack comprises a tensioning device for bracing the energy storage cells against one another along the stack axis, with at least one intermediate plate being arranged between at least two adjacent energy storage cells with respect to the stack axis, the intermediate plate partially resting at least partially on the two adjacent energy storage cells.

Furthermore, the energy storage cell stack comprises at least one cell monitoring system for monitoring an energy storage cell and / or for monitoring a plurality of energy storage cells and / or for monitoring all energy storage cells. It can be provided that a first group of energy storage cells is monitored by a first cell monitoring system, a second group of energy storage cells being monitored by a second cell monitoring system. The at least one cell monitoring system can be communicatively connected to a battery control module and / or a control device of a vehicle. The cell monitoring system can be designed essentially in the form of a plate and / or a circuit board and / or a printed circuit board. The cell monitoring system can form control and / or regulating units for monitoring energy storage cells and for balancing the charge between the individual energy storage cells. In particular, the cell monitoring system can form suitable control and / or regulating units using electronic components. The cell monitoring system can be made at least partially from plastic material. The cell monitoring system can form a circuit board which has a thickness of 2 to 3 mm, for example. Electronic components can be arranged on the circuit board in order to form suitable control and / or regulating units of the cell monitoring system. The cell monitoring system can form a protective housing for electronic components.

The cell monitoring system can have an extension along a transverse axis that is greater than a thickness of the cell monitoring system with respect to a vertical axis. The cell monitoring system can have an extension along the stack axis which is greater than a thickness of the cell monitoring system with respect to a vertical axis. The transverse axis can be oriented essentially transversely and / or perpendicular to the stack axis. The vertical axis can be oriented essentially transversely and / or perpendicular to the stack axis. The vertical axis can be oriented essentially transversely and / or perpendicular to the transverse axis.

The energy storage cell stack according to the invention enables a space-saving arrangement of the cell monitoring system. Furthermore, simple and therefore inexpensive assembly of the energy storage cell stack is made possible.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.

The at least one intermediate plate and / or the tensioning device can form at least one connection section which can be connected, in particular detachably or permanently, to at least one counter connection section formed by a housing inner wall of a housing.

At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell which has two large areas spaced apart from one another along the stacking axis, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell which delimits an inner volume of the energy storage cell in a fluid-tight manner from the surroundings. At least one energy storage cell can be designed as a lithium-ion accumulator, in particular as a lithium-polymer accumulator.

In an advantageous development of the solution according to the invention, it is provided that the cell monitoring system is connected at least in sections to the at least one intermediate plate. The cell monitoring system can be connected with an intermediate plate or with several intermediate plates or with all intermediate plates. The cell monitoring system and the at least one intermediate plate can be connected to one another in a detachable or non-detachable manner. The cell monitoring system and the at least one intermediate plate can be connected to one another in a form-fitting manner. The cell monitoring system and the at least one intermediate plate can be connected to one another via a snap connection. The cell monitoring system can form locking lugs which engage in corresponding or complementary locking lugs formed by the intermediate plate in order to form a mechanical connection in sections.

This enables a space-saving arrangement of the cell monitoring system in the energy storage cell stack.

In a further advantageous embodiment of the solution according to the invention, it is provided that the cell monitoring system is connected to the clamping device at least in sections.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

In particular, the cell monitoring system can be connected at least in sections to the bracing means and / or at least in sections to an end-face tensioning body.

The cell monitoring system and the tensioning device, in particular the tensioning means and / or the frontal tensioning body, can be connected to one another in a detachable or non-detachable manner. The cell monitoring system and the tensioning device, in particular the tensioning means and / or the end-face tensioning body, can be connected to one another in a form-fitting manner. The cell monitoring system and the tensioning device, in particular the tensioning means and / or the frontal tensioning body, can be connected to one another via a snap connection. The cell monitoring system can form latching lugs that are inserted through the Engaging the clamping device, in particular by the clamping means and / or by the front-side clamping body, corresponding or complementary locking lugs in order to form a mechanical connection in sections. This enables a space-saving arrangement of the cell monitoring system in the energy storage cell stack.

In an advantageous development of the solution according to the invention, it is provided that the at least one intermediate plate forms at least one guide device with which the cell monitoring system is connected at least in sections.

The intermediate plate can form at least one guide device to guide a temperature control fluid into an intermediate temperature control fluid path of the intermediate plate as it flows around the energy storage cell stack or to guide a temperature control fluid into a defined flow direction when it flows out of the intermediate temperature control fluid path. It can be provided that the at least one guide device is arranged on at least one temperature control fluid opening. It can be provided that at least one guide device is arranged at each temperature control fluid opening. The first temperature control fluid opening and the second temperature control fluid opening can each have a guide device. The guide device can be designed to protrude with respect to the energy storage cells in such a way that a temperature control fluid which flows past the outer surface of the energy storage cells along the stacking direction flows towards the guide device. The guide device can be designed in such a way that a temperature control fluid, which flows past the outer surface of the energy storage cells along the stacking direction and flows towards the guide device, is guided into the intermediate temperature control fluid path and flows into it. The guide device can be designed in such a way that a temperature control fluid which flows out of the intermediate temperature control fluid path is deflected in such a way that it then flows past essentially parallel to the stacking direction along the outer surface of the energy storage cells. The guide device can achieve an improved crosslinking of the large opposite surfaces of the two adjacent energy storage cells, since the guide device allows a sufficient amount of temperature control fluid to flow through the intermediate temperature control fluid path.

The cell monitoring system can be connected to a control device or to several control devices or to all control devices on one side of the energy storage cell stack.

The cell monitoring system and the at least one control device can be connected to one another in a detachable or non-detachable manner. The cell monitoring system and the at least one guide device can be connected to one another in a form-fitting manner. The cell monitoring system and the at least one guide device can be connected to one another via a snap connection. The cell monitoring system can form latching lugs which engage in flow openings corresponding or complementary formed by the guide device in order to form a mechanical connection between the cell monitoring system and the guide device.

In a further advantageous embodiment of the solution according to the invention, it is provided that the two adjacent energy storage cells each have at least one pole contact, the pole contacts of the two adjacent energy storage cells being electrically conductively connected to at least one pole bridge, the pole bridge being received by at least one pole bridge holder Cell monitoring system is at least partially in contact with a terminal bridge holder. The terminal bridge holder can thus be clamped between an intermediate plate and the cell monitoring system.

In an advantageous development of the solution according to the invention, it is provided that the at least one intermediate plate forms at least one pole bridge holder-intermediate plate mating connection section, the cell monitoring system forming at least one cell monitoring system connection section, the pole bridge holder-intermediate plate mating connection section being connected to the cell monitoring system connection section for fixing of the cell monitoring system on the intermediate plate. The connection can be designed to be detachable or non-detachable. The connection can be designed in a form-fitting manner. The connection can be designed to be latching. The connection can form a snap connection. This allows the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

It can be provided that at least one pole bridge holder forms at least one pole bridge holder-intermediate plate connection section, wherein the pole bridge holder-intermediate plate connection section forms a connection with the pole bridge holder-intermediate plate mating connection section for fixing the pole bridge holder to the intermediate plate. The connection can be designed to be detachable or non-detachable. The connection can be designed in a form-fitting manner. The connection can be designed to be latching. The connection can form a snap connection. In this way, the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

This simplifies the structure of the energy storage cell stack and additional components can be saved, since the cell monitoring system is connected to the intermediate plate via the same structures as the terminal bridge holder and / or the terminal bridge holder. The manufacturing costs of the energy storage cell stack can thus be reduced. Starting from the intermediate plate, the pole bridge holder-intermediate plate mating connection section can first pass through the pole bridge holder-intermediate plate connection section at least in sections and then pass through the cell monitoring system connection section to form a fixation of the pole bridge holder and the cell monitoring system.

In a further advantageous embodiment of the solution according to the invention it is provided that the at least one intermediate plate forms at least one cell monitoring system counter connection section, the cell monitoring system forming at least one cell monitoring system connection section, the cell monitoring system counter connection section connecting to the cell monitoring system connection section for fixing the cell monitoring system the intermediate plate forms. The connection can be designed to be detachable or non-detachable. The connection can be designed in a form-fitting manner. The connection can be designed to be latching. The connection can form a snap connection. As a result, the cell monitoring system can be positioned and / or fixed with respect to the intermediate plate.

In an advantageous development of the solution according to the invention, it is provided that the cell monitoring system has at least one recess and / or that the cell monitoring system has a plurality of recesses spaced apart from one another with respect to the stacking axis. If the at least one intermediate plate forms at least one connection section for connection to a mating connection section of a housing inner wall, the connection section of the intermediate plate can penetrate at least one recess at least in sections. This can further simplify production and further reduce production costs. In addition, the at least one cutout enables a temperature control fluid, in particular a dielectric and / or electrically non-conductive temperature control fluid, to flow around the energy storage cells.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate, in particular a connection section and / or a cover-side connection section and / or a base-side connection section, penetrates at least one recess of the cell monitoring system. In this way, a compact design of an energy storage module can be achieved, which additionally provides sufficient mechanical resistance with a reduced overall weight.
In an advantageous development of the solution according to the invention it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate.

The intermediate plate body can form at least one wall of the expansion space. At least one guide device can be formed on the edge-side spacer element. At least one guide device can be formed integrally through the edge-side spacer element.

The edge-side spacer element can have a first contact surface and a second contact surface spaced apart therefrom along the stacking direction. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact area can at least partially contact a large area of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element in the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimum range in terms of the stress ratio between the required mechanical resistance and the weight reduction. The edge-side spacer element can be designed to extend partially in the circumferential direction. The edge-side spacer element can be designed to extend completely in the circumferential direction. The edge-side spacer element can have several partial spacer elements which are arranged at a distance from one another along the circumferential direction.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have at least one section or a number of sections that have an in Have substantially the same or varying wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis. The intermediate plate and / or the intermediate plate body can have a minimum wall thickness with respect to the stack axis in order to form an expansion space. This minimum wall thickness with respect to the stack axis can be in the range between 0.1 mm and 4 mm in order to enable sufficient deformation of the cells and at the same time to ensure sufficient mechanical resistance.

The edge-side spacer element can form a frame body, the outer circumferential contour of which essentially corresponds to an outer circumferential contour of a large area of an energy storage cell. Such a frame body can be designed at least in sections as a hollow body or solid body. The edge-side spacer element, in particular in the form of a frame body, can delimit the intermediate plate body in a completely surrounding manner.

The intermediate plate and / or the intermediate plate body can have several partial sections spaced apart from one another. The subsections can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The subsections can be aligned essentially parallel to one another.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate and / or the intermediate plate body at least partially form an intermediate temperature control fluid path that can be fluidically connected to at least one temperature control fluid path of an energy storage module, and / or that the intermediate plate and / or the edge-side spacer element at least one Form temperature control fluid opening.

The energy storage module can have at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by a housing inner wall of a housing of the energy storage module and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the energy storage cells, so that the energy storage cells can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the cell monitoring system, so that the cell monitoring system can be directly wetted by the temperature control fluid. The cell monitoring system can be arranged at a distance from the inner wall of the housing. The cell monitoring system can be arranged with respect to the vertical axis between the energy storage cells and an inner cover wall of a housing cover of the housing. The cell monitoring system can be arranged with respect to the vertical axis between the energy storage cells and a bottom inner wall of a housing bottom of the housing.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid. At least one guide device can be fluidically connected to at least one temperature control fluid opening.

In particular when using a temperature control liquid, the expansion space offers the advantage that the flow rate of the temperature control liquid in the area of the central axis is reduced by the enlarged diameter of the intermediate temperature control fluid path. The contact time for wetting the large areas of the energy storage cells can thus be maximized in order to improve the temperature control of the energy storage cell and thus to increase its service life.

Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells that are used as lithium Ion accumulators can be formed, the operating temperature of the energy storage cells should be, for example, approximately in the range of 5 ° C to 35 ° C.

It can be provided that the intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs which are arranged at a distance from one another, with intermediate spaces being formed between the connecting webs. These intermediate spaces can each be fluidically connectable to a temperature control fluid path of the energy storage module via two temperature control fluid openings that are spaced apart with respect to the vertical axis. A first temperature control fluid opening, which can preferably be arranged opposite a housing bottom of the energy storage module, can form a temperature control fluid inlet. A second temperature control fluid opening, which can preferably be arranged opposite a housing cover of the energy storage module, can form a temperature control fluid outlet. The temperature control fluid inlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis. The temperature control fluid outlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis.

The invention further relates to a cell monitoring system for an energy storage cell stack according to the invention, the cell monitoring system forming at least one cell monitoring system connecting section in order to arrange the cell monitoring system on the energy storage cell stack.

The invention also relates to an energy storage module, in particular an energy storage module for a traction battery of an electric or hybrid vehicle. The energy storage module has a housing which has a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior. The energy storage module has at least one energy storage cell stack according to the invention, which is arranged in the interior of the housing.

Furthermore, the energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by the housing inner wall and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid.

The cell monitoring system is arranged in the interior of the housing and can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the cell monitoring system, so that the cell monitoring system can be directly wetted by the temperature control fluid.

In particular, it can be provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the housing inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. In this way, a temperature control fluid path is formed which provides maximum wetting of the energy storage cell stack and / or the energy storage cells, so that the most homogeneous temperature control possible can take place. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module.
It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid for example form an IPX6K and / or IPX9K-tight unit. With regard to the further design of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the following explanations, the following features of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack being provided by the invention Energy storage module can be designed individually or in a combination.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, the intermediate plate forming at least one pole bridge holder-intermediate plate mating connection section and / or at least one cell monitoring system mating connection section that can be connected to a cell monitoring system connection section of a cell monitoring system, and / or wherein the intermediate plate at least partially forms an intermediate temperature control fluid path which can be fluidly connected to at least one temperature control fluid path of an energy storage module.

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. The housing cover on the electric or hybrid vehicle can thus be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction.

In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

It can be provided that a section, in particular a section of a Vehicle body, of the electric or hybrid vehicle is designed so that a support structure is formed between at least two energy storage cell stacks, which spaced the at least two energy storage cell stacks, for example in the event of an accident.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that the one common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common battery housing on the electric or hybrid vehicle is arranged between at least one energy storage module and a roadway.

The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid.

The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveyor device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

The following exemplary embodiments are based on the general idea of designing pole bridge holders as identical parts that can be connected to one another to form a pole bridge holder chain. The following exemplary embodiments can each be combined individually or in any combination with the preceding exemplary embodiments.

The energy storage cell stack according to the invention, which can be designed in particular for an energy storage module of a traction battery of an electric or hybrid vehicle, has a plurality of energy storage cells which are arranged along a stack axis. The energy storage cell stack has a tensioning device for bracing the energy storage cells against each other along the stack axis, with at least one intermediate plate being arranged between at least two adjacent energy storage cells with respect to the stack axis, the intermediate plate partially resting at least partially on the two adjacent energy storage cells.

At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell which has two large areas spaced apart from one another along the stacking axis, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell, which is an internal volume of the energy storage cell delimits fluid-tight from an environment. At least one energy storage cell can be designed as a lithium-ion accumulator, in particular as a lithium-polymer accumulator.

A partial section of the intermediate plate can bear in contact with each of the opposite large surfaces of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis.

The pole contacts of an energy storage cell can be spaced apart from one another with respect to a transverse axis. The transverse axis can be oriented essentially transversely and / or perpendicular to the stack axis.

Two adjacent energy storage cells each have at least one pole contact, in particular at least two pole contacts spaced apart from one another along the transverse axis. The pole contacts of the two adjacent energy storage cells are electrically conductively connected to at least one pole bridge, the pole bridge being held by at least one pole bridge holder. In particular, pole contacts of the two adjacent energy storage cells, which are adjacent with respect to the stack axis, can be electrically conductively connected to at least one pole bridge. The two adjacent energy storage cells can be connected and / or connected electrically in parallel or electrically in series via pole bridges. A pole bridge can be designed as a plate-shaped electrical conductor. At least one pole bridge can be designed as a prismatic electrical conductor which has two main contact surfaces spaced from one another along a vertical axis, these main contact surfaces being connected to one another via a pole bridge jacket surface. The vertical axis is oriented transversely and / or perpendicular to the stack axis. The transverse axis is oriented transversely and / or perpendicular to the vertical axis.

A main contact area can delimit an area which is larger than any area which is delimited by partial areas of the pole bridge jacket area. A main contact surface can at least partially make electrically conductive contact with a pole contact of a first energy storage cell of the two adjacent energy storage cells, wherein the identical main contact surface can at least partially make electrically conductive contact with a pole contact of a second energy storage cell of the two adjacent energy storage cells. The main contact surface can have a right-like boundary contour.

A pole bridge holder at least partially accommodates a pole bridge and enables the pole bridge to be positioned and / or fixed with respect to at least one energy storage cell, in particular with respect to two adjacent energy storage cells. A pole bridge holder can enable the pole bridge to be positioned and / or fixed with respect to the transverse axis and / or the vertical axis and / or the stack axis.

The pole bridge holder can be made from plastic, in particular from polypropylene and / or polyamide. The pole bridge holder can be designed as an injection-molded plastic part. The pole bridge holder can be made at least partially from a metallic material. The pole bridge holder can be formed at least partially from a metallic material and partially from a plastic material. The pole bridge holder can be made at least partially from a composite material, in particular a composite material with reinforcing fibers.

The pole bridge holders are designed as identical parts and have connecting sections with which adjacent pole bridge holders can be connected to one another, in particular mechanically connected. Several consecutive pole bridge holders are connected to one another by means of the connecting sections in such a way that they form a pole bridge holder chain. An identical part is to be understood as meaning that at least two pole bridge holders are designed essentially in the same way. Several pole bridge holders can be connected to one another in a detachable or non-detachable manner. Several pole bridge holders can be connected to one another in a form-fitting manner. Several pole bridge holders can be connected to one another via a snap connection. In particular, it can be provided that several pole bridge holders are connected to one another with respect to the stack axis. A pole bridge holder chain comprises at least two mechanically interconnected pole bridge holders.

The pole bridge holders can be designed to be plugged together and / or lined up with respect to the stacking axis in order to form a pole bridge holder chain. The pole bridge holder chain can be snapped onto energy storage cells that are already clamped together. In particular, the pole bridge holder chain can be plugged onto a housing, in particular onto a housing shell and / or onto a housing cover, of an energy storage module in a latching manner. In particular, the pole bridge holder chain can be plugged onto the at least one intermediate plate in a latching manner.

By designing the pole bridge holders as identical parts, a modular structure of the pole bridge holder chain is made possible, the length of the pole bridge holder chain being able to be variably adapted to the number of energy storage cells without that new production tools must be created. This can simplify production and reduce production costs.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.

The at least one intermediate plate and / or the tensioning device can form at least one connection section which can be connected, in particular detachably or permanently, to at least one counter connection section formed by a housing inner wall of a housing.

In an advantageous development of the solution according to the invention, it is provided that the at least one pole bridge is received by at least two pole bridge holders. The at least two pole bridge holders can be lined up with respect to the stacking axis. This can further simplify production and further reduce production costs.

In a further advantageous embodiment of the solution according to the invention, it is provided that at least one pole bridge holder can be connected to a housing, in particular to a housing shell and / or to a housing cover, of an energy storage module. The pole bridge holder can be connected to the housing, in particular the housing shell and / or the housing cover, of the energy storage module, for example in a detachable or non-detachable manner. In particular, a form-fitting connection can be formed. In this way, the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

In an advantageous development of the solution according to the invention, it is provided that at least one pole bridge holder can be connected to at least one intermediate plate. Here, the intermediate plate can, for example, form at least one connecting section for a connection to a pole bridge holder. Two pole bridge holders, which are lined up with respect to the stacking axis, can be connected to two intermediate plates which are adjacent with respect to the stacking axis. The pole bridge holder can be connected to the intermediate plate in a detachable or non-detachable manner, for example. In particular, a form-fitting connection can be formed. In this way, the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

In a further advantageous embodiment of the solution according to the invention it is provided that at least two pole bridge holders spaced apart with respect to a transverse axis are connected to one another via a pole bridge holder transverse frame, and / or that at least two pole bridge holders spaced apart with respect to the transverse axis are connected to one another via at least one intermediate plate. The two pole bridge holders, spaced apart with respect to a transverse axis, can accommodate pole bridges which each contact a pole contact of an energy storage cell. The pole bridge holder cross frame can be completely or partially plate-shaped. The pole bridge holder transverse frame can be designed like a frame and delimit a transverse frame recess by surrounding it. If the at least one intermediate plate forms at least one connection section for connection to a mating connection section of a housing inner wall, the connection section of the intermediate plate can penetrate the transverse frame recess at least in sections. This can further simplify production and further reduce production costs.

In an advantageous development of the solution according to the invention, it is provided that the connection sections of the pole bridge holder form at least one pole bridge holder connection section and at least one pole bridge holder mating connection section, and that two adjacent pole bridge holders via the at least one pole bridge holder connection section of the one pole bridge holder and the at least one pole bridge holder mating connection section of the other pole bridge holder are connected to one another to form the pole bridge holder chain. The pole bridge holder mating connection section can be designed essentially complementary to the pole bridge holder connection section. The pole bridge holder connecting section can be designed like a pin. The pole bridge holders can be plugged together and / or connected in a row with respect to the stacking axis in order to form a pole bridge holder chain. The pole bridge holders can be interlocked and / or connected in a row with respect to the stacking axis in order to form a pole bridge holder chain. Several pole bridge holders can be connected to one another via a snap connection. In particular, it can be provided that several pole bridge holders can be connected to one another with respect to the stacking axis. A pole bridge holder chain comprises at least two pole bridge holders in which at least one pole bridge is received. This can further simplify production and further reduce production costs.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one pole bridge holder forms at least one pole bridge holder-intermediate plate connection section, and that the at least one intermediate plate forms at least one pole bridge holder-intermediate plate counter-connection section, the pole bridge holder-intermediate plate connection section having a connection with the pole bridge holder-intermediate plate mating connection section for fixing the pole bridge holder to the intermediate plate. The connection can be designed to be detachable or non-detachable. The connection can be designed in a form-fitting manner. The connection can be designed to be latching. The connection can form a snap connection. In this way, the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one pole bridge holder forms at least one pole bridge holder-housing connection section, and that a housing, in particular a housing shell and / or a housing cover, of an energy storage module forms at least one pole bridge holder-housing mating connection section, wherein the pole bridge holder-housing connection section forms a connection with the pole bridge holder-housing mating connection section for fixing the pole bridge holder on the housing, in particular on the housing shell and / or on the housing cover, of an energy storage module. The connection can be designed to be detachable or non-detachable. The connection can be designed in a form-fitting manner. The connection can be designed to be latching. The connection can form a snap connection. In this way, the pole bridge holder and consequently the received pole bridge can be positioned and / or fixed with respect to the stack axis.

In an advantageous development of the solution according to the invention, it is provided that the at least one pole bridge holder forms a pole bridge holder frame which delimits at least one pole bridge holder recess of the pole bridge holder, the at least one pole bridge holder recess being designed to at least partially accommodate a pole bridge. The pole bridge can be clamped and / or fixed in the pole bridge holder and / or in the pole bridge holder recess via at least one pole bridge holder clamping section of the pole bridge holder. The pole bridge can be clamped and / or fixed via at least two or at least four pole bridge holder clamping sections of the pole bridge holder in the pole bridge holder and / or in the pole bridge holder recess, the at least two or the at least four pole bridge holder clamping sections being spaced apart with respect to a circumferential direction of the pole bridge holder frame can be arranged to each other. The at least one pole bridge holder connection section of a pole bridge holder and the at least one pole bridge holder mating connection section of a pole bridge holder can be arranged at a distance from one another with respect to a circumferential direction of the pole bridge holder frame. The pole bridge holder frame can form at least one pole bridge holder-housing connection section and / or at least one pole bridge holder-intermediate plate connection section. It can be provided that on a first side of the pole bridge holder frame at least one pole bridge holder-housing connection section and / or at least one pole bridge holder-intermediate plate connection section is formed, with at least one further pole bridge holder-housing on a second side of the pole bridge holder frame. Connecting portion and / or at least one further pole bridge holder-intermediate plate connecting portion is formed. It can be provided that on a first side of the pole bridge holder frame at least two pole bridge holder-housing connecting sections and / or at least two pole bridge holder-intermediate plate connecting sections are formed. It can be provided that at least one extension is formed on the pole bridge holder frame, which extends away from the pole bridge holder recess and forms at least one pole bridge holder-housing connection section and / or at least one pole bridge holder-intermediate plate connection section. The total weight of the energy storage cell stack and / or of the energy storage module can be reduced by saving material by means of the pole bridge holder frame. Furthermore, the production costs can be reduced by saving material.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate.

The intermediate plate body can form at least one wall of an expansion space. At least one guide device can be formed on the edge-side spacer element. At least one guide device can be formed integrally through the edge-side spacer element.

The edge-side spacer element can have a first contact surface and a second contact surface spaced apart therefrom along the stacking direction. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact surface can be at least partially in contact with a large surface of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element with respect to the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimum range in terms of the stress ratio between the required mechanical resistance and the weight reduction. The edge-side spacer element can be designed to extend partially in the circumferential direction. The edge-side spacer element can be designed to extend completely in the circumferential direction. The edge-side spacer element can have several partial spacer elements which are arranged at a distance from one another along the circumferential direction.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have at least one sub-section or several sub-sections which have an essentially identical or varying wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis. The intermediate plate and / or the intermediate plate body can have a minimum wall thickness with respect to the stack axis in order to form an expansion space. This minimum wall thickness with respect to the stack axis can be in the range between 0.1 mm and 4 mm in order to enable sufficient deformation of the cells and at the same time to ensure sufficient mechanical resistance.

The edge-side spacer element can form a frame body, the outer circumferential contour of which essentially corresponds to an outer circumferential contour of a large area of an energy storage cell. Such a frame body can be designed at least in sections as a hollow body or solid body. The edge-side spacer element, in particular in the form of a frame body, can delimit the intermediate plate body in a completely surrounding manner.

The intermediate plate and / or the intermediate plate body can have several partial sections spaced apart from one another. The subsections can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The subsections can be aligned essentially parallel to one another.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate and / or the intermediate plate body at least partially form an intermediate temperature control fluid path that can be fluidly connected to at least one temperature control fluid path of an energy storage module, and / or that the intermediate plate and / or the edge-side spacer element have at least one temperature control fluid opening form.

The energy storage module can have at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by a housing inner wall of a housing of the energy storage module and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path at least in sections through the Energy storage cells is limited so that the energy storage cells can be wetted directly by the temperature control fluid.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid. At least one guide device can be fluidically connected to at least one temperature control fluid opening.

In particular when using a temperature control fluid, an expansion space offers the advantage that the flow rate of the temperature control fluid in the area of the central axis is reduced by the enlarged diameter of the intermediate temperature control fluid path. The contact time for wetting the large areas of the energy storage cells can thus be maximized in order to improve the temperature control of the energy storage cell and thus to increase its service life.

Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

It can be provided that the intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs which are arranged at a distance from one another, with intermediate spaces being formed between the connecting webs. These intermediate spaces can each be fluidically connectable to a temperature control fluid path of the energy storage module via two temperature control fluid openings that are spaced apart with respect to the vertical axis. A first temperature control fluid opening, which can preferably be arranged opposite a housing bottom of the energy storage module, can form a temperature control fluid inlet. A second temperature control fluid opening, which can preferably be arranged opposite a housing cover of the energy storage module, can form a temperature control fluid outlet. The temperature control fluid inlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis. The temperature control fluid outlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis.

The invention also relates to a pole bridge holder for an energy storage cell stack according to the invention, the pole bridge holder being designed at least to partially accommodate at least one pole bridge for the electrical connection of pole contacts of two adjacent energy storage cells of the energy storage cell stack, the pole bridge holder being designed as a common part so that several pole bridge holders can be connected to one another, to form a pole bridge holder chain.

Regarding the further design of the pole bridge holder, reference is made to the preceding statements, wherein the preceding features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to an energy storage module, in particular an energy storage module for a traction battery of an electric or hybrid vehicle. The energy storage module has a housing which has a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior. The energy storage module has at least one energy storage cell stack according to the invention, which is arranged in the interior of the housing. The energy storage module has at least one pole bridge holder according to the invention. Filler bodies can be introduced between at least one pole bridge holder and an inner wall of the housing, in particular an inner wall of the cover and / or an inner wall of the base. This filling body can form a contact pressure on the pole bridge holder and / or the received pole bridge, so that the pole bridge is in contact with the respective pole contact and is electrically conductive contacted. This filler body can for example be designed as a foam made of plastic material.

Furthermore, the energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by the housing inner wall and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid.

In particular, it can be provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the housing inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. In this way, a temperature control fluid path is formed which provides maximum wetting of the energy storage cell stack and / or the energy storage cells, so that the most homogeneous temperature control possible can take place. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module. It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid, and form, for example, an IPX6K and / or IPX9K-tight unit.

With regard to the further design of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the following explanations, the following features of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack being provided by the invention Energy storage module can be designed individually or in a combination.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, wherein the intermediate plate forms at least one pole bridge holder-intermediate plate counter-connection section which can be connected to a pole bridge holder-housing connection section of a pole bridge holder, and / or the intermediate plate at least partially forms an intermediate temperature control fluid path which can be fluidically connected to at least one temperature control fluid path of an energy storage module.

With regard to the further design of the intermediate plate, reference is made to the preceding and / or following statements, wherein the preceding and / or subsequent features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. The housing cover on the electric or hybrid vehicle can thus be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

It can be provided that a subsection, in particular a subsection of a vehicle body, of the electric or hybrid vehicle is designed in such a way that a support structure is formed between at least two energy storage cell stacks, which separates the at least two energy storage cell stacks from one another, for example in the event of an accident.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that the one common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common battery housing on the electric or hybrid vehicle is arranged between at least one energy storage module and a roadway.

The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveyor device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

Furthermore, the invention relates to a method for producing an energy storage cell stack according to the invention and / or an energy storage module according to the invention and / or a traction battery according to the invention, with pole bridges for the electrical connection of pole contacts of adjacent energy storage cells of the energy storage cell stack being arranged in at least one pole bridge holder chain, with the at least one pole bridge holder then being arranged -Chain with recorded pole bridges is arranged on energy storage cells of the energy storage cell stack in such a way that pole contacts of adjacent energy storage cells are connected in an electrically conductive manner by at least one pole bridge. The energy storage cells can be braced against one another by means of a tensioning device before the at least one pole bridge holder chain with received pole bridges is arranged on energy storage cells of the energy storage cell stack. The pole bridge holder chain can thus be latched onto energy storage cells that are already clamped to one another. Before the arrangement of the pole bridge holder chain with the pole bridges on the energy storage cells, the clamped energy storage cells can be connected to a housing, in particular a housing cover and / or a housing shell, of an energy storage module via fixing sections.

This can simplify production and reduce production costs.

The following exemplary embodiments are based on the general idea of designing the intermediate plate of an energy storage cell stack in such a way that it at least partially forms an intermediate temperature control fluid path for guiding a temperature control fluid between two adjacent energy storage cells. The following exemplary embodiments can each be combined individually or in any combination with the preceding exemplary embodiments.

The energy storage cell stack according to the invention, which can be designed in particular for an energy storage module of a traction battery of an electric or hybrid vehicle, has a plurality of energy storage cells which are arranged along a stack axis. Furthermore, the energy storage cell stack has a clamping device for bracing the energy storage cells against one another along the stack axis, with at least one intermediate plate being arranged between at least two adjacent energy storage cells with respect to the stack axis, the intermediate plate partially resting against the two adjacent energy storage cells at least partially. At least one intermediate temperature control fluid path for guiding a temperature control fluid is formed at least partially through the intermediate plate and at least partially through opposing large areas of the two adjacent energy storage cells, the intermediate temperature control fluid path being fluidically connectable to at least one temperature control fluid path of an energy storage module.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell which has two large areas spaced apart from one another along the stacking axis, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell which delimits an inner volume of the energy storage cell in a fluid-tight manner from the surroundings. At least one energy storage cell can be used as a lithium Ion accumulator, in particular as a lithium polymer accumulator, be designed.

A partial section of the intermediate plate can bear in contact with each of the opposite large surfaces of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis.

The intermediate temperature control fluid path is designed in particular for guiding a temperature control fluid between two adjacent energy storage cells in order to enable the large areas of the two adjacent energy storage cells to be wetted. In this way, on the one hand, the required temperature control of the individual energy storage cells can be achieved and, on the other hand, an inhomogeneity of the thermal load on the individual energy storage devices and on the entire energy storage cell stack can be at least reduced. As a result, the service life of the individual energy storage cells and the service life of the energy storage cell stack are increased.

The opposite large areas of the two adjacent energy storage cells are aligned essentially parallel to an end plane, the end plane being spanned by a transverse axis and a vertical axis.

The transverse axis is oriented transversely and / or perpendicular to the stack axis. The vertical axis is oriented transversely and / or perpendicular to the stack axis. The transverse axis is oriented transversely and / or perpendicular to the vertical axis.

Walls of the intermediate temperature control fluid path, which extend essentially parallel to the face plane, are essentially formed by the opposing large areas of the two adjacent energy storage cells. Walls of the intermediate temperature control fluid path, which extend transversely and / or perpendicularly and / or at an angle to the face plane, are essentially formed by at least a partial area and / or partial section of the intermediate plate. However, it can also be provided that at least in sections, walls of the intermediate temperature control fluid path that extend essentially parallel to the face plane are formed by the intermediate plate in addition to being formed by the large areas and / or are formed exclusively by the intermediate plate.

The at least one intermediate plate can be made from plastic, in particular from polypropylene and / or polyamide. The at least one intermediate plate can be designed as an injection molded plastic part. The at least one intermediate plate can be formed at least partially from a metallic material. The intermediate plate can be formed at least partially from a metallic material and partially from a plastic material. The intermediate plate can be formed at least partially from a composite material, in particular a composite material with reinforcing fibers. As a result, the tensile forces and / or compressive forces that occur can be absorbed by the intermediate plate in a non-destructive manner.

The intermediate temperature control fluid path can in particular be an intermediate temperature control fluid path, which can be designed in particular to guide a temperature control fluid. A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path and / or the intermediate temperature control fluid path.

The intermediate temperature control fluid path can be designed to taper at least in sections and / or to widen at least in sections in order to adapt the flow rate of a temperature control fluid along the intermediate temperature control fluid path. In this way, for example, the contact time of the temperature control fluid with the large areas of the energy storage cells can be optimized.

It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face is designed as an intermediate temperature control fluid path. It can be provided that a maximum of 70%, in particular a maximum of 80%, of an area of the intermediate plate viewed from the end face is designed as an intermediate temperature control fluid path. It can be provided that 50% to 80%, in particular 60% to 70%, of an area of the intermediate plate viewed from the end face is designed as an intermediate temperature control fluid path. The remaining surface viewed at the front, which is not used to form the intermediate temperature control fluid path, can, for example, form receptacles with inserted compression bodies. The remaining surface viewed at the end can also be designed as a plate-shaped solid body of the intermediate plate. The intermediate plate can have at least two spaced-apart residual surfaces which are separated from one another by the intermediate temperature control fluid path. In this way, a technical and cost-technical optimum can be achieved in the tension ratio between the mechanical stability of the intermediate plate and maximum wetting of the large areas of the energy storage cells with a temperature control fluid.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.

The at least one intermediate plate and / or the tensioning device can form at least one connection section which can be connected, in particular detachably or permanently, to at least one counter connection section formed by a housing inner wall of a housing.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate forms at least one first temperature control fluid opening and at least one second temperature control fluid opening, the first temperature control fluid opening and the second temperature control fluid opening being arranged at a distance from one another, the first temperature control fluid opening and the second temperature control fluid opening fluidly with one another via the intermediate temperature control fluid path are connected. The intermediate plate can have more than two temperature control fluid openings, all of which are fluidically connected to one another via the intermediate temperature control fluid path.

The first temperature control fluid opening and the second temperature control fluid opening can each form a plurality of partial temperature control fluid openings that are spaced apart from one another.

The first temperature control fluid opening and the second temperature control fluid opening can be arranged at a distance from one another with respect to the transverse axis. The first temperature control fluid opening and the second temperature control fluid opening can be arranged at a distance from one another with respect to the vertical axis. The first temperature control fluid opening and the second temperature control fluid opening can be arranged at a distance from one another with respect to the vertical axis and with respect to the transverse axis.

A temperature control fluid, which flows around the energy storage cell stack, for example, can flow into the intermediate temperature control fluid path and / or flow out of the intermediate temperature control fluid path via the first temperature control fluid opening and the second temperature control fluid opening in order to achieve temperature control of the large opposite surfaces of the two adjacent energy storage cells.

The first temperature control fluid opening and the second temperature control fluid opening can be designed such that a main flow direction is formed along the intermediate temperature control fluid path, which is oriented essentially parallel to the transverse axis.

The first temperature control fluid opening and the second temperature control fluid opening can be designed in such a way that a main flow direction is formed along the intermediate temperature control fluid path that is oriented essentially parallel to the vertical axis.

The first temperature control fluid opening can be designed, for example, as a temperature control fluid inlet, whereas the second temperature control fluid opening can be designed as a temperature control fluid outlet. A temperature control fluid can flow into the intermediate temperature control fluid path via the temperature control fluid inlet and can flow out of the intermediate temperature control fluid path via the temperature control fluid outlet. It can be provided that the temperature control fluid inlet and the temperature control fluid outlet have a substantially similar opening size. It can be provided that the temperature control fluid inlet has a larger opening size than the temperature control fluid outlet. It can be provided that the temperature control fluid inlet has a smaller opening size than the temperature control fluid outlet.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate temperature control fluid path is designed to run essentially linearly at least in sections, and / or that the intermediate temperature control fluid path is designed to run essentially nonlinearly at least in sections, and / or that the intermediate temperature control fluid path is at least partially designed to be essentially I-shaped, and / or that the intermediate temperature control fluid path is at least partially designed to be essentially L-shaped, and / or that the intermediate temperature control fluid path is at least partially designed to be essentially S-shaped, and / or that the intermediate temperature control fluid path is at least partially designed is substantially T-shaped, and / or that the intermediate temperature control fluid path is substantially U-shaped at least in sections, and / or that the intermediate temperature control fluid path is substantially X-shaped at least in sections, and / or that the intermediate temperature control fluid path is substantially X-shaped at least in sections Is formed Y-shaped, and / or that the intermediate temperature control fluid path is formed at least in sections essentially Z-shaped.

In this way, for example, the wetting area of the large areas of the energy storage cells can be optimized.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate has partial sections, in particular transverse webs, which are designed such that a temperature control fluid follows a meander-like flow path when flowing through the intermediate temperature control fluid path along the intermediate temperature control fluid path. With such a meandering flow path, the contact time of the temperature control fluid with the large areas of the energy storage cells can be optimized. The transverse webs can be oriented essentially transversely to an inflow direction. The transverse webs can be oriented essentially transversely to an outflow direction. The transverse webs can be in contact with the opposite large surfaces of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate forms flow guide structures and / or turbulence generator structures at least in sections within the intermediate temperature control fluid path. Flow guide structures can form a flow resistance for the temperature control fluid, the temperature control fluid essentially forming a laminar flow without turbulence when it flows around the flow control structures. Turbulence generator structures can form a flow resistance for the temperature control fluid, wherein the temperature control fluid forms turbulence when it flows around the turbulence generator structures. The flow guide structures and / or the turbulence generator structures can have a chessboard-like arrangement of material sections and material-free sections, wherein the material sections can, for example, be curved and / or beveled. The flow guide structures and / or the turbulence generator structures can be at least partially penetrated by at least one support web or a plurality of mutually spaced support webs. The support webs can contact the opposite large surfaces of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis. In contrast to this, the flow guide structures and / or the turbulence generator structures can be arranged in the intermediate temperature control fluid path at a distance from the opposite large areas of the two adjacent energy storage cells. The flow guide structures and / or the turbulence generator structures can have a smaller material thickness with respect to the stack axis than the support webs. The support webs can be oriented essentially parallel to the flow direction and / or essentially transversely and / or parallel to transverse webs. The flow guide structures and / or the turbulence generator structures allow a further optimization of the temperature control of the opposite large areas of the two adjacent energy storage cells.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate forms at least one guide device in order to guide a temperature control fluid into the intermediate temperature control fluid path as it flows around the energy storage cell stack or to direct a temperature control fluid in a defined flow direction when it flows out of the intermediate temperature control fluid path. It can be provided that the at least one guide device is arranged on at least one temperature control fluid opening. It can be provided that at least one guide device is arranged at each temperature control fluid opening. The first temperature control fluid opening and the second temperature control fluid opening can each have a guide device. The guide device can be designed to protrude with respect to the energy storage cells in such a way that a temperature control fluid which flows past the outer surface of the energy storage cells along the stacking direction flows towards the guide device. The guide device can be designed in such a way that a temperature control fluid, which flows past the outer surface of the energy storage cells along the stacking direction and flows towards the guide device, is guided into the intermediate temperature control fluid path and flows into it. The guide device can be designed in such a way that a temperature control fluid which flows out of the intermediate temperature control fluid path is deflected in such a way that it then flows past essentially parallel to the stacking direction along the outer surface of the energy storage cells. Through the Guide device, improved wetting of the opposite large areas of the two adjacent energy storage cells can be achieved, since a sufficient amount of temperature control fluid can flow through the intermediate temperature control fluid path through the guide device.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate forms at least one guide device which is designed to suppress at least one flow direction of a temperature control fluid. In this way, for example, not only a partial flow that flows against the guide device can be deflected, but rather the entire flow that flows against the guide device. It can be provided that the at least one guide device is arranged on at least one temperature control fluid opening. It can be provided that at least one guide device is arranged at each temperature control fluid opening. The first temperature control fluid opening and the second temperature control fluid opening can each have a guide device. The guide device can be designed to protrude with respect to the energy storage cells in such a way that a temperature control fluid which flows past the outer surface of the energy storage cells along the stacking direction flows towards the guide device. The guide device can be designed in such a way that a temperature control fluid, which flows past the outer surface of the energy storage cells along the stacking direction and flows towards the guide device, is guided into the intermediate temperature control fluid path and flows into it. The guide device can be designed in such a way that a temperature control fluid which flows out of the intermediate temperature control fluid path is deflected in such a way that it then flows past essentially parallel to the stacking direction along the outer surface of the energy storage cells.

In an advantageous further development of the solution according to the invention, it is provided that the at least one guide device forms, at least in sections, a retaining collar which surrounds at least one energy storage cell of the energy storage cell stack at least in sections. The retaining collar can extend at least partially along the stack axis and partially encompass at least one energy storage cell in such a way that a displacement of the energy storage cell along the transverse axis and / or vertical axis is prevented. The guide device can have a plurality of retaining collars spaced apart from one another along a circumferential direction and / or along the transverse axis and / or along the vertical axis. The retaining collars can be designed on the edge side and protruding in comparison to the secured energy storage cell along the transverse axis and / or along the vertical axis. The retaining collar can be designed at least in sections to be complementary to the encompassing section of the energy storage cell. In this way, for example, a form-fitting gripping around the energy storage cell can be formed. By means of the retaining collars, the energy storage cells can be arranged essentially rigidly with respect to a housing of an energy storage module and at a distance from the inner wall of the housing. With respect to the vertical axis, the at least one retaining collar can be arranged between a cover-side connection section and a bottom-side connection section of the energy storage module. It can be provided that more retaining collars are formed than latching elements.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate forms, at least in sections, a receptacle for a compression body, and / or that the intermediate plate forms, at least in sections, positioning aids which at least partially encompass at least one pole contact of an energy storage cell and / or can make contact, and / or that the intermediate plate forms, at least in sections, a connecting section for connection to a pole bridge holder.

At least one compression body can be introduced into the receptacle, in particular introduced with a form fit and / or material fit. A compression body can be more compressible compared to the intermediate plate, so that an elastic deformation of the compression body requires less force and / or lower pressure than in comparison for a similar elastic deformation of the intermediate plate.

A positioning aid can form at least two positioning webs which are arranged at a distance from one another along the transverse axis. Here, the distance between the two positioning webs along the transverse axis can essentially correspond to the extent of a pole contact along the transverse axis. At least one positioning web can have a longitudinal extension along the stack axis. The positioning aid and in particular the at least two positioning webs can be shifted along the stacking axis in such a way that they are in contact with a pole contact. This enables the energy storage cell stack to be manufactured in a simpler and more cost-effective manner.

The connection section for a connection with a pole bridge holder can interact with a mating connection section of the pole bridge holder in order to enable positioning and / or fixation of a pole bridge holder relative to the intermediate plate and / or relative to the energy storage cell stack. The connecting section for a connection to a pole bridge holder can be arranged on an edge-side spacer element and / or formed by this.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate is designed such that at least one expansion space is formed between the intermediate plate and at least one energy storage cell with respect to the stacking axis, into which the energy storage cell can expand during a swelling process. A partial section of the intermediate plate can bear in contact with each of the opposite large surfaces of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis. In particular, this sub-section of the intermediate plate resting against the large areas can be in contact with the large areas before, during and / or after a swelling process. Thus, a minimum distance between the opposing large areas of the two adjacent energy storage cells can be ensured with respect to the stack axis. The intermediate plate is designed in such a way that at least one expansion space is formed between the intermediate plate and at least one energy storage cell with respect to the stack axis, into which the energy storage cell can expand during a swelling process. The intermediate plate can be designed in such a way that at least one first expansion space is formed between the intermediate plate and a first energy storage cell of the two adjacent energy storage cells with respect to the stack axis, at least one second expansion space being formed between the intermediate plate and a second energy storage cell of the two adjacent energy storage cells, so that the first energy storage cell can expand into the first expansion space during a swelling process, whereas the second energy storage cell can expand into the second expansion space during a swelling process. A malfunction and / or destruction of the energy storage cells due to deformation during a swelling process can thus be prevented, so that the service life of the energy storage cells is increased.

In order to form at least one expansion space, the intermediate plate can, for example, have a concave partial end face which is opposite a large area of an energy storage cell. As long as the energy storage cell has suffered no swelling or a very slight swelling process, the concave partial end face is spaced apart from the large area of the energy storage cell with respect to the stack axis. With increasing deformation due to the swelling process, the expansion space is filled by the energy storage cell until the large area of the energy storage cell rests on the concave partial end face.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate. The intermediate plate body can form at least one wall of the expansion space. At least one guide device can be formed on the edge-side spacer element. At least one guide device can be formed integrally through the edge-side spacer element.

The edge-side spacer element can have a first contact surface and a second contact surface spaced apart therefrom along the stacking direction. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact surface can be at least partially in contact with a large surface of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element in the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimum range in terms of the stress ratio between the required mechanical resistance and the weight reduction. The edge-side spacer element can be designed to extend partially in the circumferential direction. The edge-side spacer element can be designed to extend completely in the circumferential direction. The edge-side spacer element can have several partial spacer elements which are arranged at a distance from one another along the circumferential direction.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have at least one sub-section or several sub-sections which have an essentially identical or varying wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis. The intermediate plate and / or the intermediate plate body can have a minimum wall thickness with respect to the stack axis in order to form an expansion space. These The minimum wall thickness with respect to the stack axis can be in the range between 0.1 mm and 4 mm in order to enable sufficient deformation of the cells and at the same time to ensure sufficient mechanical resistance.

The edge-side spacer element can form a frame body, the outer circumferential contour of which essentially corresponds to an outer circumferential contour of a large area of an energy storage cell. Such a frame body can be designed at least in sections as a hollow body or solid body. The edge-side spacer element, in particular in the form of a frame body, can essentially completely delimit the intermediate plate body.

The intermediate plate and / or the intermediate plate body can have several partial sections spaced apart from one another. The subsections can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The subsections can be aligned essentially parallel to one another.

In an advantageous development of the solution according to the invention, it is provided that the guide device is arranged on the edge-side spacer element, and / or that the intermediate plate body at least partially forms an intermediate temperature control fluid path that can be fluidly connected to at least one temperature control fluid path of an energy storage module, and / or that the intermediate plate and / or the edge-side spacer element form at least one temperature control fluid opening.

The energy storage module can have at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by a housing inner wall of a housing of the energy storage module and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the energy storage cells, so that the energy storage cells can be directly wetted by the temperature control fluid.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid. At least one guide device can be fluidically connected to at least one temperature control fluid opening.

In particular when using a temperature control liquid, the expansion space offers the advantage that the flow rate of the temperature control liquid in the area of the central axis is reduced by the enlarged diameter of the intermediate temperature control fluid path. The contact time for wetting the large areas of the energy storage cells can thus be maximized in order to improve the temperature control of the energy storage cell and thus to increase its service life.

Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

It can be provided that the intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs which are arranged at a distance from one another, with intermediate spaces being formed between the connecting webs. These intermediate spaces can each be fluidically connectable to a temperature control fluid path of the energy storage module via two temperature control fluid openings that are spaced apart with respect to the vertical axis. A first temperature control fluid opening, which can preferably be arranged opposite a housing bottom of the energy storage module, can form a temperature control fluid inlet. A second temperature control fluid opening, which is preferably arranged opposite a housing cover of the energy storage module can, can form a temperature control fluid outlet. The temperature control fluid inlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis. The temperature control fluid outlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis.

In a further advantageous embodiment of the solution according to the invention, it is provided that the tensioning device, in particular at least one tensioning means and / or at least one end-face tensioning body, forms at least one flow guide structure for directing the flow of the temperature control fluid. It can be provided that the tensioning device, in particular at least one tensioning means and / or at least one end-face tensioning body, forms a plurality of flow guide structures. These flow guide structures can form flow openings and / or protruding flow bodies. The flow openings can in particular be designed as overflow openings and / or throughflow openings which enable a fluidic connection between an intermediate temperature control fluid path and the temperature control fluid path. The plurality of flow guide structures can be designed at a distance from one another with respect to the transverse axis and / or stack axis and / or vertical axis.

In particular, the tensioning device, in particular at least one tensioning means and / or at least one end-face tensioning body, can be designed for uniform distribution of the temperature control fluid with respect to the intermediate temperature control fluid paths. For this purpose, the number and / or size and / or positioning of the flow guide structures can be designed in such a way that essentially uniform fluid distribution of the temperature control fluid with respect to a plurality of intermediate temperature control fluid paths is achieved. In this way, for example, pressure drops in the temperature control fluid along the stack axis can be compensated and / or normalized, so that a uniform fluid distribution of the temperature control fluid with respect to a plurality of intermediate temperature control fluid paths is established. It can be provided that the number and / or the size of the flow guide structures with respect to the transverse axis and / or with respect to the stacking axis and / or with respect to the vertical axis, for example, decreases in sections and / or increases in sections and / or is similar or constant in sections.

The intermediate plates can be designed as identical parts, which can be designed essentially identically. The manufacturing costs can thus be reduced, since there is no need to adapt the intermediate plates individually. The tensioning device, in particular at least one tensioning means and / or at least one end-face tensioning body, can be used as individually adapted components which, for example, have different overflow openings from intermediate plate to intermediate plate in order to achieve uniform fluid distribution.

It can be provided that the clamping means has at least one opening for venting at least one energy storage cell. The clamping means can have a plurality of openings spaced apart with respect to the stack axis. At least one energy storage cell can have a safety opening, wherein during a malfunction, in particular during overheating (also called thermal runaway), this energy storage cell can flow out of the safety opening essentially along a main flow direction transverse to the stack axis. In this way, for example, destruction of the cell housing of the energy storage cell can be prevented.

The tensioning means can have openings which, with respect to the main flow direction, can lie opposite the safety openings of the energy storage cells in order to enable the energy storage cells to vent.

The tensioning device, in particular at least one tensioning means and / or at least one end-face tensioning body, can at least partially form the temperature control fluid path through overflow openings.

The invention also relates to an energy storage module, in particular an energy storage module for a traction battery of an electric or hybrid vehicle. The energy storage module has a housing which has a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior. In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module. The energy storage module has at least one energy storage cell stack according to the invention, which is arranged in the interior of the housing. Furthermore, the energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by the housing inner wall and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid, at least one intermediate temperature control fluid path with the energy storage cell stack at least one temperature control fluid path is fluidically connected.

In particular, it can be provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the housing inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. In this way, a temperature control fluid path is formed which provides maximum wetting of the energy storage cell stack and / or the energy storage cells, so that the most homogeneous temperature control possible can take place. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid, and form, for example, an IPX6K and / or IPX9K-tight unit.
With regard to the further design of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the following explanations, the following features of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack being provided by the invention Energy storage module can be designed individually or in a combination.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, the intermediate plate being designed such that it at least partially forms a wall of an intermediate temperature control fluid path.

With regard to the further design of the intermediate plate, reference is made to the preceding and / or following statements, wherein the preceding and / or subsequent features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. Thus the Housing cover on the electric or hybrid vehicle can be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

It can be provided that a subsection, in particular a subsection of a vehicle body, of the electric or hybrid vehicle is designed in such a way that a support structure is formed between at least two energy storage cell stacks, which separates the at least two energy storage cell stacks from one another, for example in the event of an accident.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that the one common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common battery housing on the electric or hybrid vehicle is arranged between at least one energy storage module and a roadway.
The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveyor device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

The following exemplary embodiments are based on the general idea of designing the intermediate plate of an energy storage cell stack in such a way that, with respect to a stack axis, between the intermediate plate and at least one Energy storage cell forms at least one expansion space into which the energy storage cell can expand during a swelling process. The following exemplary embodiments can each be combined individually or in any combination with the preceding exemplary embodiments.

The energy storage cell stack according to the invention, which can be designed in particular for an energy storage module of a traction battery of an electric or hybrid vehicle, has a plurality of energy storage cells which are arranged along a stack axis. Furthermore, the energy storage cell stack has a tensioning device for bracing the energy storage cells against one another along the stack axis, at least one intermediate plate being arranged between at least two adjacent energy storage cells with respect to the stack axis, the intermediate plate partially resting at least partially on the two adjacent energy storage cells.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.

At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell which has two large areas spaced apart from one another along the stacking axis, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell which delimits an inner volume of the energy storage cell in a fluid-tight manner from the surroundings. At least one energy storage cell can be designed as a lithium-ion accumulator, in particular as a lithium-polymer accumulator.

A partial section of the intermediate plate can bear in contact with each of the opposite large areas of the two adjacent energy storage cells in order to position the two adjacent energy storage cells at a defined distance with respect to the stack axis. In particular, this sub-section of the intermediate plate resting against the large areas can be in contact with the large areas before, during and / or after a swelling process. Thus, a minimum distance between the opposing large areas of the two adjacent energy storage cells with respect to the stack axis can be ensured. The intermediate plate is designed in such a way that at least one expansion space is formed between the intermediate plate and at least one energy storage cell with respect to the stack axis, into which the energy storage cell can expand during a swelling process. The intermediate plate can be designed in such a way that at least one first expansion space is formed between the intermediate plate and a first energy storage cell of the two adjacent energy storage cells with respect to the stacking axis, wherein between the intermediate plate and of a second energy storage cell of the two adjacent energy storage cells forms at least one second expansion space, so that the first energy storage cell can expand into the first expansion space during a swelling process, whereas the second energy storage cell can expand into the second expansion space during a swelling process. A malfunction and / or destruction of the energy storage cells due to deformation during a swelling process can thus be prevented, so that the service life of the energy storage cells is increased.

In order to form at least one expansion space, the intermediate plate can, for example, have a concave partial end face which is opposite a large area of an energy storage cell. As long as the energy storage cell has suffered no swelling or a very slight swelling process, the concave partial end face is spaced apart from the large area of the energy storage cell with respect to the stack axis. With increasing deformation due to the swelling process, the expansion space is filled by the energy storage cell until the large area of the energy storage cell rests on the concave partial end face.

The at least one intermediate plate can be made from plastic, in particular from polypropylene and / or polyamide. The at least one intermediate plate can be designed as an injection molded plastic part. The at least one intermediate plate can be formed at least partially from a metallic material. The intermediate plate can be formed at least partially from a metallic material and partially from a plastic material. The intermediate plate can be formed at least partially from a composite material, in particular a composite material with reinforcing fibers.

As a result, the tensile forces and / or compressive forces that occur can be absorbed by the intermediate plate in a non-destructive manner.

The at least one intermediate plate and / or the tensioning device can form at least one connection section which can be connected, in particular detachably or permanently, to at least one counter connection section formed by a housing inner wall of a housing.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate has at least one partial section which has a first cross-sectional area transverse to a vertical axis, the first cross-sectional area having a variation along the vertical axis. A variation of this cross-sectional area can be understood to mean a change in the cross-sectional area along the vertical axis that deviates from the manufacturing-related fluctuations. The vertical axis is oriented transversely and / or perpendicular to the stack axis. As a result, the expansion space can be optimally adapted to the energy storage cells used and, in particular, to their deformation changes due to swelling processes. The first cross-sectional area can have a rectangular outline contour. The at least one section of the intermediate plate can form at least one wall of the expansion space.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate has at least one section that has a second cross-sectional area transverse to a transverse axis, the second cross-sectional area having a variation along the transverse axis. A variation of this cross-sectional area can be understood to mean a change in the cross-sectional area along the transverse axis that deviates from the manufacturing-related fluctuations. The transverse axis is oriented transversely and / or perpendicular to the stack axis. The transverse axis is oriented transversely and / or perpendicular to the vertical axis. As a result, the expansion space can be optimally adapted to the energy storage cells used and, in particular, to their deformation changes due to swelling processes. The second cross-sectional area can have a rectangular outline contour. The at least one section of the intermediate plate can form at least one wall of the expansion space.

In an advantageous development of the solution according to the invention, it is provided that the first cross-sectional area decreases along the vertical axis in the direction of a central axis, and / or that the second cross-sectional area decreases along the transverse axis in the direction of a central axis. The center axis is aligned essentially parallel to the stack axis and penetrates the center points or centroids of the opposite large areas of the two adjacent energy storage cells. Consequently, the center axis is oriented transversely and / or perpendicular to the transverse axis. Furthermore, the central axis is oriented transversely and / or perpendicular to the vertical axis. Since the deformation of the energy storage cell during a swelling process is strongly pronounced in the area of the central points or area centers of gravity of the large areas compared to the edge areas, the expansion space is optimally adapted to the deformation behavior of the energy storage cells. The decrease in cross-sectional area can be continuous and / or continuous in sections and / or discontinuous in sections.

In a further advantageous embodiment of the solution according to the invention, it is provided that the first cross-sectional area decreases non-linearly along the vertical axis in the direction of the central axis, and / or that the second cross-sectional area decreases non-linearly along the transverse axis in the direction of the central axis. In the case of a non-linear decrease, for example, a square and / or cubic reduction in the cross-sectional area can be associated with a progressive approach to the center axis. The non-linear decrease in the cross-sectional area can be designed to be continuous and / or continuous in sections and / or discontinuous in sections. In the case of a steady, non-linear decrease in the cross-sectional area in sections, for example, there may be a square reduction in the cross-sectional area near the central axis, whereas up to a certain distance from the central axis the decrease in the cross-sectional area initially has a cubic decrease in the cross-sectional area.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate has at least one section which is designed as a restoring spring element that is elastically deformed during a swelling process of an energy storage cell. As a result, the sub-section of the intermediate plate can be in contact with the large areas of the energy storage cell before, during or after a swelling process. In this way, for example, thermal contact between the energy storage cell and the intermediate plate can be improved so that the intermediate plate can be used, for example, as a temperature control body in order to improve the temperature control of the large area of the energy storage cell. The restoring spring element can form at least one wall of the expansion space.

In a further advantageous embodiment of the solution according to the invention, it is provided that the return spring element is at least partially designed as a torsion bar-like return spring element. Here, the return spring element can be designed like a rod, the return spring element being elastically rotated about its longitudinal axis during a swelling process of an energy storage cell.

In a further advantageous embodiment of the solution according to the invention it is provided that the restoring spring element is at least partially designed as a wave-shaped restoring spring element. During a swelling process of an energy storage cell, the restoring spring element can be elastically deformed in such a way that, for example, a reduced ripple of the restoring spring element occurs.

In a further advantageous embodiment of the solution according to the invention it is provided that the return spring element is arranged in an inclined position between the two adjacent energy storage cells and is elastically deformed by a swelling process of at least one energy storage cell and changes into a reduced inclined position. An inclined position can be present if a main web surface of a partial section, which is opposite a large surface of an energy storage cell, is not aligned parallel to a front plane that is spanned by the transverse axis and the vertical axis. A reduced inclination is present when the angle between the main web surface and the front plane is reduced compared to the inclination. A parallel position exists when the main web surface is aligned essentially parallel to the face plane. When an energy storage cell swells, the resetting spring element can change from an inclined position to a reduced inclined position or even to a parallel position due to the deformation of the energy storage cell.

In a further advantageous embodiment of the solution according to the invention, it is provided that the restoring spring element is at least partially designed as a compression body. A compression body can be more compressible compared to the intermediate plate, so that a lower force and / or a lower pressure is required for an elastic deformation of the compression body than in comparison for a similar elastic deformation of the intermediate plate. The compression body can be received by the intermediate plate. The compression body can be materially attached to the intermediate plate. The compression body can in particular be glued to the intermediate plate. The compression body can have a greater extent with respect to the stack axis than the intermediate plate. The intermediate plate can be formed from a metal sheet, in particular a thin metal, it being possible for the compression body to be glued onto the intermediate plate.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate. The intermediate plate body can form at least one wall of the expansion space.

The edge-side spacer element can have a first contact surface and one for this along the Have the stacking direction spaced second contact surface. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact surface can be at least partially in contact with a large surface of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element with respect to the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimal range in terms of the stress ratio of the required mechanical resistance and the weight reduction. The edge-side spacer element can be designed to extend partially in the circumferential direction. The edge-side spacer element can be designed to extend completely in the circumferential direction. The edge-side spacer element can have several partial spacer elements which are arranged at a distance from one another along the circumferential direction.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have at least one sub-section or several sub-sections which have an essentially identical or varying wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis. The intermediate plate and / or the intermediate plate body can have a minimum wall thickness with respect to the stack axis in order to form an expansion space. This minimum wall thickness with respect to the stack axis can be in the range between 0.1 mm and 4 mm in order to enable sufficient deformation of the cells and at the same time to ensure sufficient mechanical resistance.

The edge-side spacer element can form a frame body, the outer circumferential contour of which essentially corresponds to an outer circumferential contour of a large area of an energy storage cell. Such a frame body can be designed at least in sections as a hollow body or solid body. The edge-side spacer element, in particular in the form of a frame body, can completely delimit the intermediate plate body in the circumferential direction.

The intermediate plate and / or the intermediate plate body can have several partial sections spaced apart from one another. The subsections can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The subsections can be aligned essentially parallel to one another.

In a further advantageous embodiment of the solution according to the invention it is provided that the intermediate plate and / or the intermediate plate body has a plurality of subsections which form a plurality of connecting webs which are spaced apart from one another, with intermediate spaces being formed between the connecting webs.

The connecting webs can be designed in such a way that they connect a cover-side connection section of the intermediate plate and a base-side connection section of the intermediate plate, in particular cover-side locking elements and bottom-side locking elements. In each case, at least one connecting web can connect a cover-side locking element with a bottom-side locking element along the vertical axis. These connecting webs can form tie rods to absorb tensile forces along the vertical axis. In particular, the connecting webs can be designed as subsections which form at least one expansion space. Thus, for example, tapered tie rods can be formed with respect to the vertical axis.

The connecting webs can be designed at a distance from one another with respect to the transverse axis and / or with respect to the vertical axis and / or with respect to the stacking axis. The connecting webs can be aligned essentially parallel to one another.

In a further advantageous embodiment of the solution according to the invention, it is provided that the intermediate plate and / or the intermediate plate body at least partially forms an intermediate temperature control fluid path that can be fluidly connected to at least one temperature control fluid path of an energy storage module, and / or that the intermediate plate and / or the edge-side spacer element at least one Form temperature control fluid opening.

The energy storage module can have at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by a housing inner wall of a housing of the energy storage module and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is limited at least in sections by the energy storage cells so that the Energy storage cells can be wetted directly by the temperature control fluid.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example

The walls of the intermediate temperature control fluid path can be formed partly by the large areas of the adjacent energy storage cells and partly by the intermediate plate and / or the intermediate plate body of the intermediate plate. In this way, the proportion of the surface of an energy storage cell wetted with the temperature control fluid can be maximized. In this way, the temperature of the opposing large areas of two energy storage cells can be achieved. The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid.

In particular when using a temperature control liquid, the expansion space offers the advantage that the flow rate of the temperature control liquid in the area of the central axis is reduced by the enlarged diameter of the intermediate temperature control fluid path. The contact time for wetting the large areas of the energy storage cells can thus be maximized in order to improve the temperature control of the energy storage cell and thus to increase its service life.

Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

It can be provided that the intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs which are arranged at a distance from one another, with intermediate spaces being formed between the connecting webs. These intermediate spaces can each be fluidically connectable to a temperature control fluid path of the energy storage module via two temperature control fluid openings that are spaced apart with respect to the vertical axis. A first temperature control fluid opening, which can preferably be arranged opposite a housing bottom of the energy storage module, can form a temperature control fluid inlet. A second temperature control fluid opening, which can preferably be arranged opposite a housing cover of the energy storage module, can form a temperature control fluid outlet. The temperature control fluid inlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis. The temperature control fluid outlets of the respective intermediate spaces can be arranged at a distance from one another with respect to the transverse axis.

The invention also relates to an energy storage module, in particular an energy storage module for a traction battery of an electric or hybrid vehicle. The energy storage module has a housing which has a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior. In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module. The energy storage module has at least one energy storage cell stack according to the invention, which is arranged in the interior of the housing. Furthermore, the energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which are at least partially formed by the housing inner wall and the at least one energy storage cell stack, so that the housing inner wall and the at least one energy storage cell stack can be directly wetted by the temperature control fluid.

In particular, it can be provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the housing inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. As a result, a temperature control fluid path is formed which ensures maximum wetting of the energy storage cell stack and / or the energy storage cells so that the most homogeneous temperature possible can be achieved. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid, and form, for example, an IPX6K and / or IPX9K-tight unit.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

With regard to the further design of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the following explanations, the following features of the energy storage module, the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack being provided by the invention Energy storage module can be designed individually or in a combination.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, the intermediate plate being designed such that an expansion space is formed when the intermediate plate rests against at least one energy storage cell. In particular, an expansion space should be formed when the intermediate plate is in contact with a non-swollen, prismatic energy storage cell.

With regard to the further design of the intermediate plate, reference is made to the preceding and / or following statements, wherein the preceding and / or subsequent features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. The housing cover on the electric or hybrid vehicle can thus be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to a sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

It can be provided that a section, in particular a section of a vehicle body, of the electric or hybrid vehicle is designed such that a support structure is formed between at least two energy storage cell stacks, which spacing the at least two energy storage cell stacks apart, for example in the event of an accident, in particular with regard to a Vehicle longitudinal axis spaced apart.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that a common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common battery housing on the electric or hybrid vehicle is arranged between at least one energy storage module and a roadway.

The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid.

The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveyor device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

The following exemplary embodiments are based on the general idea that at least one energy storage cell stack of the energy storage module is designed at least in sections to absorb tensile forces and / or compressive forces in the energy storage module. The following exemplary embodiments can each be combined individually or in any combination with the preceding exemplary embodiments.

The energy storage module according to the invention, which in particular as Energy storage module is designed for a traction battery of an electric or hybrid vehicle, has a housing. The housing comprises a housing interior and a housing interior wall, the housing interior wall delimiting the housing interior. In particular, the housing inner wall can delimit the housing interior in a fluid-tight manner from the surroundings of the energy storage module.

At least one energy storage cell stack is arranged in the housing interior. The housing can have at least one temperature control fluid inlet for a temperature control fluid to flow in. The housing can have at least one temperature control fluid outlet for a temperature control fluid to flow out. The housing can be penetrated by electrical contact means for making electrical contact with the energy storage cell stack, such electrical contact means being introduced into the housing in a fluid-tight manner and enabling electrical power to be transmitted to the surroundings of the housing. The housing can be formed completely or in sections from plastic material and / or from a metallic material and / or from a composite material.

It can be provided that a plurality of energy storage cell stacks are arranged in the housing interior. It can be provided that the energy storage module has a plurality of energy storage cell stacks and forms the traction battery itself.

The at least one energy storage cell stack has a plurality of energy storage cells which are arranged along a stack axis. Furthermore, the at least one energy storage cell stack has a clamping device for bracing the energy storage cells against one another along the stack axis.

At least one energy storage cell can provide a certain electrical power, wherein the energy storage cell can be designed as an accumulator, so that recharging of the energy storage cell is possible. At least one energy storage cell can be designed as a prismatic energy storage cell which has two large areas spaced apart from one another along the stacking axis, these large areas being connected to one another via a lateral surface. A large area can delimit an area that is larger than any area that is delimited by partial areas of the lateral surface. The two large areas of an energy storage cell can be designed essentially in the same way. The large areas and the partial areas of the lateral surface can each form a rectangular delimiting contour. Two pole contacts which are spaced apart from one another and via which the electrical power of the energy storage cell can be tapped can be arranged on the jacket surface and / or on a partial surface of the jacket surface. The large surfaces and the lateral surfaces can form a cell housing of the energy storage cell which delimits an inner volume of the energy storage cell in a fluid-tight manner from the surroundings. At least one energy storage cell can be designed as a lithium-ion accumulator, in particular as a lithium-polymer accumulator.

The stack axis can be aligned parallel to the surface normal vector of at least one large surface. Several energy storage cells can be aligned along the stack axis in such a way that the large areas of two adjacent energy storage cells are opposite one another. The stack axis and the surface normal vectors of the large areas of all energy storage cells of an energy storage cell stack can coincide with a common straight line in space.

The tensioning device can have at least one tensioning means and / or at least one end face tensioning body. The tensioning means can be at least partially in the form of tension plates and / or tension bands. The end-face clamping body can be formed at least partially from a plastic material and / or a metallic material. The bracing means can be formed from a metallic material. The end face clamping body can be a clamping plate, for example. The energy storage cell stack can have two end-face clamping bodies between which the energy storage cells are arranged, the end-face clamping bodies being positively and / or cohesively connected to the at least one bracing means such that the tensioning device provides bracing of the energy storage cells along the stack axis. A first end-face clamping body can contact a large area of a first energy storage cell, whereas a second end-face clamping body can contact a large area of a last energy storage cell. The first energy storage cell and the last energy storage cell are the energy storage cells which are at a maximum spacing along the stack axis.

The tensioning device and / or the tensioning means and / or the front-side tensioning body can form flow guide structures for directing the flow of the temperature control fluid. The flow guide structures can form flow openings and / or protruding flow bodies.

The energy storage module has at least one temperature control fluid path for guiding a temperature control fluid, the walls of which at least in sections pass through the housing inner wall and the at least one energy storage cell stack are formed so that the housing inner wall and the at least one energy storage cell stack can be wetted directly by the temperature control fluid. In particular, it can be provided that the temperature control fluid path is delimited at least in sections by the energy storage cells, so that the energy storage cells can be directly wetted by the temperature control fluid. The temperature control fluid path can be fluidically connected to the at least one temperature control fluid inlet and the at least one temperature control fluid outlet. The temperature control fluid path can provide direct temperature control of the energy storage cell stack and / or the energy storage cells. Temperature control can be understood to mean heating or cooling. Heating may be necessary if the ambient temperature of the energy storage module falls below a minimum temperature value that is necessary for trouble-free operation of the energy storage cells. Cooling may be necessary in particular during charging processes, operating processes and / or ambient temperatures at which the operating temperature of the energy storage cells rises above a maximum temperature value that is permissible for trouble-free operation of the energy storage cells. For energy storage cells, which can be designed as lithium-ion accumulators, the operating temperature of the energy storage cells should be approximately in the range from 5 ° C. to 35 ° C., for example.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

The energy storage module can preferably be completely filled with the temperature control fluid, in particular the temperature control liquid, and form, for example, an IPX6K and / or IPX9K-tight unit.

At least one intermediate plate is arranged between at least two adjacent energy storage cells with respect to the stack axis. The intermediate plate can have an extension along the stack axis which is smaller than the distance between two large areas of an energy storage cell along the stack axis. The intermediate plate can at least partially have an extension along a vertical axis that is greater than the extension of an energy storage cell along the vertical axis.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

The at least one intermediate plate and / or the clamping device forms at least one connecting section, the inner wall of the housing forming at least one counter-connecting section, the connecting section forming a connection to the counter-connecting section. In particular, it can be provided that the bracing means and / or at least one end-face tensioning body forms at least one connection section, so that the connection section forms a connection with the mating connection section. In particular, it can be provided that the bracing means and / or at least one end-face tensioning body forms at least one connection section, so that the connection section forms a connection with the mating connection section. The energy storage cell stack of the energy storage module is designed at least in sections to absorb tensile forces and / or compressive forces in the energy storage module via the connection between the connecting section and the counter-connecting section. As a result, the wall thickness of the housing can be reduced without the mechanical resistance being impaired, so that the overall weight of the energy storage module is reduced while the mechanical resistance remains the same.

It can be provided that the clamping device, in particular the clamping means, is at least partially penetrated by the intermediate plate and / or by the connecting section of the intermediate plate. Corresponding openings can be formed in the clamping device and / or in the clamping means.

In an advantageous development of the solution according to the invention, it is provided that the housing has a housing cover and a housing shell, the housing shell forming a housing bottom which is arranged along a vertical axis at a distance from the housing cover. The housing shell can have a plurality of side walls which can be arranged circumferentially around the housing base. The housing cover and / or the housing base can each be designed in the form of a plate. The vertical axis can be oriented essentially transversely to the stack axis. A transverse axis is defined which is oriented transversely to the vertical axis and transversely to the stack axis.

The housing can form, at least in sections, structural ribs on an outside that faces away from the housing interior. These structural ribs can improve the mechanical resistance of the housing. The structural ribs can be designed to run along the stack axis and / or transverse axis and / or vertical axis. Several structural ribs can be formed. A plurality of structural ribs can be formed which are at least in sections formed at a distance from one another with respect to the stacking axis and / or transverse axis and / or vertical axis. A plurality of structural ribs can be formed which at least partially penetrate one another and / or are at least partially connected to one another.

A partial section of the housing inner wall is formed by an inner wall of the housing cover, a partial section of the housing inner wall being formed by an inner wall of the housing bottom.

The at least one intermediate plate and / or the clamping device forms at least one connection section on the cover side and at least one connection section on the bottom. In particular, it can be provided that the tensioning means and / or at least one end-face tensioning body form at least one connection section on the cover side and at least one connection section on the bottom. The connection section on the cover side and the connection section on the bottom side are formed at a distance from one another along the vertical axis. The top-side connecting section and the bottom-side connecting section are connected at least via a material section of the intermediate plate and / or the clamping device in such a way that the intermediate plate and / or the clamping device is designed to absorb tensile forces acting along the vertical axis. In other words, the intermediate plate and / or the clamping device forms a tie rod for absorbing tensile forces.

The cover inner wall forms at least one cover-side mating connection section, the bottom inner wall forming at least one bottom-side mating connection section. The cover-side connection section forms a connection with the cover-side mating connection section, the bottom-side connection section forming a connection with the bottom-side mating connection section. In this way, forces that act on the base and the cover due to the internal pressure of the temperature control fluid can be absorbed by the intermediate plate and / or by the clamping device. In particular, forces acting along the vertical axis are absorbed by the intermediate plate and / or by the clamping device. As a result, the housing, in particular the housing cover, the housing shell and / or the housing base can be designed with a reduced material thickness, so that the total weight of the energy storage module can be reduced.

In a further advantageous embodiment of the solution according to the invention, it is provided that the housing has a housing shell with at least one side wall, a partial section of the housing inner wall being formed by an inner side wall of the at least one side wall. The at least one intermediate plate and / or the clamping device forms at least one side wall-side connection section, the side inner wall forming at least one side-wall-side mating connection section, the side-wall-side connection section forming a connection with the side wall-side mating connection section. In particular, it can be provided that the tensioning means and / or at least one end-face tensioning body form at least one connection section on the side wall. In this way, forces which act on the side walls due to the internal pressure of the temperature control fluid can be absorbed by the intermediate plate and / or by the clamping device. In particular, the intermediate plate and / or the clamping device can be designed so that it absorbs forces along the transverse axis. This makes it possible to reduce the side wall thickness of the respective side wall, so that a further weight reduction of the energy storage module is made possible.

In addition, the side wall-side connection section and the side-wall-side mating connection section can be designed such that a rigid and / or fixed relative positioning of the energy storage cell stack in the energy storage module along the stack axis is formed.

The at least one intermediate plate and / or the clamping device can form at least two sidewall-side connecting sections, which are arranged spaced apart from one another along the transverse axis, in order to connect two spaced-apart sidewalls that form corresponding sidewall-side mating connection sections.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate forms at least one intermediate connection section and that the tensioning device forms at least one counter-intermediate connection section, the intermediate connection section forming a connection with the counter-inter-connection section. This can a rigid and / or fixed relative positioning of the intermediate plate and / or the energy storage cells along the stacking direction within the energy storage cell stack. The counter-intermediate connection section can also be formed by the bracing means and / or the front-side tensioning body. In this way, particularly in an accident situation with strongly acting forces, secure pointing and fixing of the energy storage cells can be ensured. In addition, the material of the clamping device can contribute to absorbing forces, so that the intermediate plate can be designed with thinner walls.

The intermediate plate can preferably have at least one intermediate connecting section at edge regions which extend along the vertical axis and / or transverse axis. The intermediate connection section can form latching elements that are spaced apart from one another and the opposing intermediate connection section can form opposing latching elements that are complementary to the latching elements and spaced apart from one another. The locking elements can be designed as holding depressions and / or holding projections such as eyelets or mushroom pins. The counter-locking elements can in particular be formed by the bracing means.

In a further advantageous embodiment of the solution according to the invention, it is provided that the connection section forms a releasable connection or a non-releasable connection with the mating connection section, and / or that the cover-side connection section forms a releasable connection or a non-releasable connection with the cover-side mating connection section, and / or that the bottom-side connecting section forms a detachable connection or non-detachable connection with the bottom-side mating connection section, and / or that the side-wall-side connecting section forms a detachable connection or a non-detachable connection with the side-wall-side mating connection section, and / or that the intermediate connection section forms a detachable connection or a non-detachable connection with the Forms counter interconnection section.

The connecting section can be brought into engagement with the mating connecting section. The connection section can form a form-fitting, releasable connection with the mating connection section.

The cover-side connection section can be brought into engagement with the cover-side mating connection section. The bottom-side connection section can be brought into engagement with the bottom-side mating connection section. The cover-side connection section can form a form-fitting, releasable connection with the cover-side mating connection section, wherein the bottom-side connection section can form a form-fitting, releasable connection with the bottom-side mating connection section.

The sidewall-side connection section can be brought into engagement with the sidewall-side mating connection section. The side wall-side connection section can form a form-fitting, releasable connection with the side-wall-side mating connection section.

The interconnection portion may be engageable with the counter-interconnection portion. The intermediate connection section can form a form-fitting, releasable connection with the counter-intermediate connection section.

In the case of a detachable connection, the sections that form the connection can be detached from one another again without damage and / or destruction. A detachable connection offers the advantage that individual components of the energy storage module, in particular the energy storage cell stack, can be exchanged.

A permanent connection is present if at least one of the sections that forms the connection has to be damaged and / or destroyed in order to release the connection.

In a further advantageous embodiment of the solution according to the invention, it is provided that the energy storage cells of the energy storage cell stack are arranged at a distance from the inner wall of the housing. In particular, all of the energy storage cells of the energy storage cell stack can be arranged at a distance from the housing inner wall of the housing. In this way, a temperature control fluid path is formed which provides maximum wetting of the energy storage cell stack and / or the energy storage cells, so that the most homogeneous temperature control possible can take place. As a result, temperature gradients between the energy storage cells can be reduced, so that thermally induced stresses are minimized.

In an advantageous development of the solution according to the invention, it is provided that the at least one intermediate plate has at least one retaining collar which surrounds at least one energy storage cell of the energy storage cell stack at least in sections. The retaining collar can extend at least partially along the stack axis and partially encompass at least one energy storage cell so that a displacement of the energy storage cell along the Transverse axis and / or vertical axis is prevented. The intermediate plate can have a plurality of retaining collars spaced apart from one another along a circumferential direction and / or along the transverse axis and / or along the vertical axis. The retaining collars can be formed on the edge and protruding in comparison to the secured energy storage cell along the transverse axis and / or along the vertical axis. The retaining collar can be designed at least in sections to be complementary to the encompassing section of the energy storage cell. In this way, for example, a form-fitting gripping around the energy storage cell can be formed. By means of the retaining collars, the energy storage cells can be arranged essentially rigidly with respect to the housing and at a distance from the inner wall of the housing.

With regard to the vertical axis, the at least one retaining collar can be arranged between the cover-side connection section and the base-side connection section. It can be provided that several retaining collars are designed as locking elements.

In a further advantageous embodiment of the solution according to the invention, it is provided that at least one intermediate plate has at least one retaining collar which surrounds two adjacent energy storage cells of the energy storage cell stack at least in sections. The retaining collar can extend at least partially along the stack axis and partially encompass at least two adjacent energy storage cells in such a way that a displacement of two adjacent energy storage cells along the transverse axis and / or vertical axis is prevented. The intermediate plate can have a plurality of holding collars spaced apart from one another along the circumferential direction and / or along the transverse axis and / or along the vertical axis. The retaining collars can be arranged at the edge with respect to the clamping device and / or with respect to the intermediate plate and, compared to the secured energy storage cells, can be configured to protrude along the transverse axis and / or along the vertical axis. The retaining collar can be designed at least partially complementary to the encompassing section of the one energy storage cell and at least partially complementary to the encompassing section of the other energy storage cell. In this way, for example, a form-fitting gripping around the energy storage cells can be formed. By means of the retaining collars, the energy storage cells can be arranged essentially rigidly with respect to the housing and at a distance from the inner wall of the housing.

With regard to the vertical axis, the at least one retaining collar can be arranged between the cover-side connection section and the base-side connection section. It can be provided that more retaining collars are formed than latching elements.

In an advantageous development of the solution according to the invention, it is provided that the at least one connecting section forms a plurality of mutually spaced latching elements and that the mating connection section forms complementary and spaced apart latching elements to the latching elements, and / or that the at least one cover-side connecting section forms a plurality of mutually spaced latching elements and that the cover-side mating connection section forms complementary and spaced-apart mating locking elements to the locking elements, and / or that the at least one bottom-side connecting section forms a plurality of mutually spaced locking elements and that the bottom-side mating connection section to the locking elements forms complementary and spaced-apart mating locking elements, and / or that the at least one side wall Connecting portion forms a plurality of mutually spaced locking elements and that the seitenwa Ndside mating connection section to the locking elements forms complementary and mutually spaced mating locking elements.

It can be provided that all of the locking elements of the intermediate plate and / or of the clamping device have essentially the same locking direction. It can be provided that all counter-locking elements have essentially the same locking direction.

If the energy storage cell stack is latched into the housing shell, for example preferably by sliding it with respect to the stacking direction, all latching elements can have the same latching direction in order to form a latching connection. The latching elements can be arranged at the edge with respect to the clamping device and / or with respect to the intermediate plate and, compared to the secured energy storage cells, can be formed protruding along the transverse axis and / or along the vertical axis. The locking elements can pass through the tensioning device, in particular the tensioning means, in which case appropriate openings can be provided in the. The latching elements can be spaced apart from one another with respect to the clamping device and / or with respect to the intermediate plate in the circumferential direction and / or along the vertical axis and / or along the transverse axis, in particular spaced apart substantially equidistantly from one another.

The locking elements can be used as holding projections, such as eyelets or mushroom pins, be designed that can be locked directly in the counter-locking elements. The latching elements and counter-latching elements can be designed so that locking by inserting the energy storage cell stack into the housing and subsequent relative displacement of the energy storage cell stack with respect to the housing, for example along the stack axis, leads to a form fit. A relative displacement of a part of the housing, for example the housing cover and / or the housing bottom, can also be provided for this purpose.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one connection section and the at least one mating connection section can be positively connected to each other by at least one locking bolt, and / or that the at least one cover-side connection section and the at least one cover-side mating connection section are connected to each other by at least one locking bolt can be positively connected, and / or that the at least one bottom-side connection section and the at least one bottom-side mating connection section can be positively connected to one another by at least one locking bolt, and / or that the at least one side wall-side connecting section and the at least one side wall-side mating connection section can be positively connected to one another by at least one locking bolt are.

The connecting section can have a plurality of connecting section elements. The connecting section elements can be arranged at the edge with respect to the tensioning device and / or with respect to the intermediate plate and, compared to the secured energy storage cells, can be configured to protrude along the transverse axis and / or along the vertical axis. The connecting section elements can pass through the tensioning device, in particular the tensioning means, in which case corresponding openings can be provided for this purpose. The connecting section elements can be spaced apart from one another with respect to the clamping device and / or with respect to the intermediate plate in the circumferential direction and / or along the vertical axis and / or along the transverse axis, in particular spaced apart substantially equidistantly from one another.

The connecting section elements can be designed as holding projections, such as eyelets or mushroom pins, which are locked with counter-locking elements of the counter-connecting section with the aid of the locking bolt. Here, at least one locking bolt or several locking bolts can be inserted and / or displaced in order to form a positive connection between the connecting section and the counter-connecting section. In particular, the locking bolt can be mounted displaceably with respect to the housing.

The bottom-side connection section and the bottom-side counter-connection section and / or the cover-side connection section and the cover-side counter-connection section and / or the side-wall-side connection section and the side-wall-side counter-connection section can be designed like the connection section and the counter-connection section.

Several locking bars can be provided. At least one locking latch can be designed in several pieces. A locking bolt can have several locking rods spaced apart from one another and / or several locking pegs spaced apart from one another. At least one locking rod can have a plurality of locking pins which are arranged at a distance from one another with respect to a longitudinal direction of the locking rods. The locking bar can be designed such that it pierces the housing of the energy storage module and a section of the locking bar is arranged outside the housing, so that the energy storage cell stack can be locked by actuating the part of the locking bar arranged outside the housing.

The locking latch can for example be fastened and / or guided on the housing, in particular on the housing cover and / or housing base and / or side wall. The locking latch can for example be attached and / or guided on the energy storage cell stack, in particular on at least one intermediate plate and / or on the clamping device.

It can be provided that at least one locking bolt and / or several locking bolts can be actuated when the housing is closed or the housing cover is attached, for example through a suitable fluid-tight passage and / or through a sealable inspection opening. The inspection opening can be made essentially small compared to the dimensions of the energy storage module. The feedthrough and / or the inspection opening can preferably be arranged in the housing shell or in the housing cover.

In an advantageous development of the solution according to the invention, it is provided that the intermediate plate forms at least one guide section for guiding at least one locking bolt. The guide section can have at least one guide section elements or a plurality of guide section elements spaced apart from one another. The guide section and / or at least one guide section element can be a Form sliding guide so that a locking bolt is mounted displaceably with respect to the stack axis, for example.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate has at least one edge-side spacer element along the circumferential direction for spacing the at least two adjacent energy storage cells apart along the stack axis, the edge-side spacer element at least partially delimiting an intermediate plate body of the intermediate plate, and / or that the at least one intermediate plate and / or the intermediate plate body has, at least in sections, a plate-shaped solid body, and / or that the at least one intermediate plate and / or the intermediate plate body has, at least in sections, a plurality of connecting webs that are spaced apart from one another, with intermediate spaces between the connecting webs are formed, and / or that the at least one intermediate plate and / or the intermediate plate body at least partially a receptacle for a K ompression body forms. At least one compression body can be introduced into the receptacle, in particular introduced with a form fit and / or material fit.

The edge-side spacer element can be designed to run completely around the circumference. The edge-side spacer element can be partially circumferential in the circumferential direction, so that either a partial spacer element is present or there are at least two partial spacer elements which are arranged at a distance from one another in the circumferential direction.

The edge-side spacer element can have a first contact surface and a second contact surface spaced apart therefrom along the stacking direction. The first contact surface can be at least partially in contact with a large surface of a first energy storage cell of two adjacent energy storage cells. The second contact surface can be at least partially in contact with a large surface of a second energy storage cell of two adjacent energy storage cells. The wall thickness of the edge-side spacer element with respect to the stack axis and / or the distance between the contact surface along the stack axis is smaller than the distance between two large areas of an energy storage cell along the stack axis. The wall thickness of the edge-side spacer element can preferably be in the range from 0.5 mm to 5 mm, since these wall thicknesses represent an optimal range in terms of the stress ratio of the required mechanical resistance and the weight reduction.

The edge-side spacer element can have body surfaces which are at least partially aligned essentially parallel to partial surfaces of the lateral surface of at least one energy storage cell. These partial surfaces of the lateral surface and the body surfaces aligned essentially parallel thereto can lie in one plane.

The intermediate plate body, which the edge-side spacer element at least partially delimits, can have an essentially equal wall thickness with respect to the stack axis. The wall thickness of the intermediate plate body with respect to the stacking axis can also be smaller than the wall thickness of the edge-side spacer element with respect to the stacking axis.

The connecting webs can be designed in such a way that the cover-side connecting section and the bottom-side connecting section, in particular the cover-side locking elements and the bottom-side locking elements, connect to one another. In each case, at least one connecting web can connect a cover-side locking element with a bottom-side locking element along the vertical axis.

A compression body can be more compressible compared to the intermediate plate, so that a lower force and / or pressure is required for an elastic deformation of the compression body than in comparison for a similar elastic deformation of the intermediate plate.

In an advantageous development of the solution according to the invention, it is provided that the at least one intermediate plate is made of plastic, in particular of polypropylene and / or polyamide, and / or that the at least one intermediate plate is designed as an injection-molded plastic part, and / or that the at least one intermediate plate is at least is partially formed from a metallic material. The intermediate plate can be formed at least partially from a metallic material and partially from a plastic material. The intermediate plate can be formed at least partially from a composite material, in particular a composite material with reinforcing fibers. As a result, the tensile forces and / or compressive forces that occur can be absorbed by the intermediate plate in a non-destructive manner.

In a further advantageous embodiment of the solution according to the invention, it is provided that the at least one intermediate plate at least partially forms an intermediate temperature control fluid path that is fluidly connected to the at least one temperature control fluid path, and / or that the at least one intermediate plate is at least partially designed as a temperature control body. The The temperature control body can have a higher thermal conductivity compared to the energy storage cell.

The walls of the intermediate temperature control fluid path can be formed partly by the large areas of the adjacent energy storage cells and partly by the intermediate plate and / or the intermediate plate body of the intermediate plate. In this way, the proportion of the surface of an energy storage cell wetted with the temperature control fluid can be maximized. In this way, the temperature of the opposing large areas of two energy storage cells can be achieved. The intermediate plate and / or the edge-side spacer element can form at least one temperature control fluid opening for a fluid connection between the temperature control fluid path and the intermediate temperature control fluid path. The intermediate plate and / or the edge-side spacer element can form a plurality of temperature control fluid openings spaced apart from one another in the circumferential direction for a fluidic connection of the temperature control fluid path to the intermediate temperature control fluid path. The tensioning device, in particular the tensioning means, can form throughflow openings for the temperature control fluid.

The intermediate temperature control fluid path or the walls of the intermediate temperature control fluid path can be formed at least in sections with connecting webs of the intermediate plate.

In an advantageous development of the solution according to the invention, it is provided that at least one intermediate plate is arranged between each two adjacent energy storage cells of the energy storage cell stack. As a result, the internal pressure load from the temperature control fluid can be evenly distributed with respect to the stack axis. In this way, for example, local bulges in the housing can be prevented. In addition, if an individual intermediate plate is impaired, the overall function of the energy storage module is not significantly impaired.

The invention also relates to an energy storage cell stack for an energy storage module according to the invention. The energy storage cell stack has a plurality of energy storage cells which are arranged along a stack axis, at least one intermediate plate being arranged between at least two adjacent energy storage cells with respect to the stack axis, the at least one intermediate plate forming at least one connecting section, the at least one intermediate plate and / or a clamping device so is designed that the connection section forms a detachable connection or a non-detachable connection with the counter-connection section when the energy storage cell stack is installed in the energy storage module.

The energy storage cell stack can have a tensioning device for tensioning the energy storage cells against one another along the stack axis.

It can be provided that at least one intermediate plate is arranged between all adjacent energy storage cells with respect to the stack axis. It can be provided that at least one intermediate plate is arranged following every second and / or fourth energy storage cell with respect to the stack axis.

Regarding the further design of the energy storage cells, the at least one intermediate plate, the clamping device and the energy storage cell stack, reference is made to the preceding statements, the preceding features of the energy storage cells, the at least one intermediate plate and the energy storage cell stack being formed individually or in any combination by the energy storage cell stack according to the invention can.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, the intermediate plate forming at least one connecting section, the intermediate plate being designed such that the connecting section forms a detachable connection or a non-detachable connection with the mating connection section when the Intermediate plate is built into the energy storage module.

With regard to the further design of the intermediate plate, reference is made to the preceding statements, wherein the preceding features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to an intermediate plate for an energy storage module according to the invention and / or for an energy storage cell stack according to the invention, the intermediate plate being designed so that it can be positioned in the clamping device when the energy storage cell stack is installed in the energy storage module.

With regard to the further design of the intermediate plate, reference is made to the preceding statements, wherein the preceding features of the intermediate plate can be formed individually or in any combination by the intermediate plate according to the invention.

The invention also relates to a traction battery for an electric or hybrid vehicle, in particular a plug-in hybrid vehicle. A vehicle can be understood to mean a road vehicle, in particular a railless road vehicle. The traction battery has at least one energy storage module according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. The traction battery can have a large number of energy storage modules according to the invention in order to supply the electric or hybrid vehicle with electrical drive power. It can be provided that the traction battery is formed by a single energy storage module.

It can be provided that the traction battery is formed by a single energy storage module with several energy storage cell stacks, wherein the energy storage cell stacks can be electrically interconnected.

It can be provided that several energy storage modules form the traction battery, with the energy storage modules being electrically interconnected and fluidically connected to one another.

It can be provided that several energy storage modules form the traction battery, which are electrically interconnected and fluidically connected to one another, wherein the energy storage modules can be accommodated in a common battery housing.

It can be provided that a section of a housing, in particular the housing shell, of at least one energy storage module is formed by a subsection, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a housing cover can close off the section of the electric or hybrid vehicle forming the housing shell on the roadway side and / or in a fluid-tight manner. The housing cover on the electric or hybrid vehicle can thus be arranged between at least one energy storage cell stack of the energy storage module and a roadway. An underbody protection plate can be arranged on the electric or hybrid vehicle between the housing cover and the roadway. The formation of a section of a housing of at least one energy storage module by a section of the electric or hybrid vehicle enables a total weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the housing cover and the underbody protection plate.

It can be provided that a section of a common battery housing, in particular a battery housing shell, of several energy storage modules is formed by a partial section, in particular by the vehicle body, of the electric or hybrid vehicle. Here, a battery housing cover can close off the section of the electric or hybrid vehicle forming the battery housing shell on the roadway side and / or in a fluid-tight manner. The battery housing cover can thus be arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway. An underbody protection plate on the electric or hybrid vehicle can be arranged between the battery housing cover and the roadway. The formation of a section of a common battery housing by a section of the electric or hybrid vehicle enables an overall weight reduction. In addition, the subsection, in particular the vehicle body, of the electric or hybrid vehicle meets the requirements with regard to sufficient mechanical resistance. A fluid path through which a temperature control fluid can flow can be formed between the battery housing cover and the underbody protection plate.

Provision can be made for a section, in particular a section of a vehicle body, of the electric or hybrid vehicle to be designed in such a way that a support structure is formed between at least two energy storage cell stacks, which separates the at least two energy storage cell stacks from one another, for example in the event of an accident, in particular with regard to a Vehicle longitudinal axis spaced apart.

It can be provided that the housing of at least one energy storage module is designed separately with respect to the electric or hybrid vehicle. The separately designed housing of at least one energy storage module can be inserted into the electric or hybrid vehicle in such a way that a housing shell of at least one energy storage module is arranged on the electric or hybrid vehicle between at least one energy storage cell stack and a roadway.

It can be provided that a common battery housing of several energy storage modules is formed separately with respect to the electric or hybrid vehicle. Here, the separately formed common battery housing of several energy storage modules can be used in the electric or hybrid vehicle in such a way that a battery housing shell of the common Battery housing is arranged on the electric or hybrid vehicle between at least one energy storage module and a roadway.

The invention also relates to a temperature control system for a traction battery of an electric or hybrid vehicle. The temperature control system comprises a traction battery according to the invention and / or an energy storage module according to the invention. Furthermore, the temperature control system comprises a temperature control fluid, in particular a temperature control liquid, the temperature control fluid being introduced in the temperature control fluid path of at least one energy storage module according to the invention in order to provide temperature control for the energy storage cells. The temperature control fluid, in particular the temperature control liquid, can essentially completely fill the temperature control fluid path.

A temperature control liquid, in particular a dielectric and / or electrically non-conductive temperature control liquid, can be used as the temperature control fluid. The dielectric and / or electrically non-conductive temperature control liquid can be an oil liquid, for example.

The temperature control fluid can be encapsulated in the energy storage module. An electrically driven conveying device for conveying the temperature control fluid can also be arranged along the temperature control fluid path.

The traction battery and / or the energy storage module can each have at least one corresponding temperature control fluid inlet and temperature control fluid outlet, which can be fluidically connected to a temperature control fluid circuit. The temperature control fluid circuit can, for example, have at least one electrically driven conveyor device for conveying the temperature control fluid in the temperature control fluid circuit. The temperature control fluid circuit can have a heat transfer unit for heating and / or cooling the temperature control fluid.

Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures on the basis of the drawings.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention.

Preferred exemplary embodiments of the invention are shown in the drawings and are explained in more detail in the following description, with the same reference symbols referring to the same or similar or functionally identical components.

• 1 eine perspektivische Ansicht einer prismatischen Energiespeicherzelle,
• 2 eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen E nerg iespeicherzellenstapels,
• 3 eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen E nerg iespeicherm odu ls,
• 4 eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen Energiespeichermoduls vor einem Zusammenbauvorgang,
• 5 eine Seitenansicht des Energiespeichermoduls der 4 während des Zusammenbauvorgangs,
• 6 eine Seitenansicht des Energiespeichermoduls der 4 nach dem Zusam menbauvorgang,
• 7 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeichermoduls,
• 8 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 9 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 10 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 11 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 12 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 13 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeichermoduls,
• 14 eine weitere Seitenansicht des Energiespeichermoduls der 13,
• 15 eine perspektivische Ansicht eines erfindungsgemäßen Energiespeicherzellenstapels,
• 16 eine weitere perspektivische Ansicht eines erfindungsgemäßen Energiespeicherzellenstapels,
• 17 eine weitere perspektivische Ansicht eines erfindungsgemäßen Energiespeicherzellenstapels,
• 18 eine weitere perspektivische Ansicht eines erfindungsgemäßen Energiespeicherzellenstapels,
• 19 eine perspektivische Ansicht einer erfindungsgemäßen Zwischenplatte,
• 20 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte,
• 21 eine Draufsicht einer erfindungsgemäßen Zwischenplatte,
• 22 eine Draufsicht einer im Energiespeichermodul eingesetzten Zwischenplatte,
• 23 eine stirnseitige Ansicht einer weiteren Ausführungsform einer erfindungsgemäßen Zwischenplatte,
• 24 eine stark vereinfachte Darstellung eines Erfindungsgemäßen Temperiersystems.
• 25 eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen Energiespeichermoduls vor einem Zusammenbauvorgang,
• 26 eine Seitenansicht des Energiespeichermoduls der 25 während des Zusammenbauvorgangs,
• 27 eine Seitenansicht des Energiespeichermoduls der 25 nach dem Zusammenbauvorgang,
• 28 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeichermoduls,
• 29 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 30 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 31 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 32 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 33 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeicherzellenstapels,
• 34 eine Seitenansicht einer weiteren Ausführungsform eines erfindungsgemäßen Energiespeichermoduls,
• 35 eine weitere Seitenansicht des Energiespeichermoduls der 34,
• 36 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte,
• 37 eine Draufsicht einer erfindungsgemäßen Zwischenplatte,
• 38 eine Draufsicht einer im Energiespeichermodul eingesetzten Spannvorrichtung,
• 39 eine Seitenansicht einer erfindungsgemäßen Zwischenplatte,
• 40 eine Seitenansicht der Zwischenplatte der 39, wobei die Zwischenplatte zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 41 eine Seitenansicht der Zwischenplatte der 40 nach einem Schwellvorgang der Energiespeicherzellen,
• 42 ein Querschnitt durch eine erfindungsgemäße Zwischenplatte mit Rückstellfederelementen, wobei die Zwischenplatte zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 43 ein Querschnitt durch die Zwischenplatte der 42 nach einem Schwellvorgang der Energiespeicherzellen,
• 44 eine Seitenansicht einer erfindungsgemäßen Zwischenplatte mit einem wellenförmigen Rückstellfederelement, wobei die Zwischenplatte zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 45 eine Seitenansicht der Zwischenplatte der 44 nach einem Schwellvorgang der Energiespeicherzellen,
• 46 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte,
• 47 eine seitlicher Teilausschnitt eines erfindungsgemäßen Energiespeichermoduls,
• 48 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte mit einem I-artigen Zwischentemperierfluidpfad,
• 49 die Zwischenplatte der 48 mit mäanderförmiger Strömungsführung,
• 50 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte mit einem weiteren l-artigen Zwischentemperierfluidpfad,
• 51 die Zwischenplatte der 50 mit mäanderförmiger Strömungsführung,
• 52 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte mit einem L-artigen Zwischentemperierfluidpfad,
• 53 die Zwischenplatte der 52 mit mäanderförmiger Strömungsführung,
• 54 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte mit einem T-artigen Zwischentemperierfluidpfad,
• 55 die Zwischenplatte der 54 mit mäanderförmiger Strömungsführung,
• 56 eine stirnseitige Ansicht einer erfindungsgemäßen Zwischenplatte mit einem Z-artigen Zwischentemperierfluidpfad,
• 57 die Zwischenplatte der 56 mit mäanderförmiger Strömungsführung,
• 58 eine perspektivische Ansicht einer erfindungsgemäßen Zwischenplatte mit einer Leitvorrichtung,
• 59 eine Draufsicht auf die Zwischenplatte der 58, die zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 60 eine perspektivische Ansicht einer erfindungsgemäßen Zwischenplatte mit Positionierhilfen,
• 61 eine Draufsicht auf die Zwischenplatte der 60, die zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 62 eine perspektivische Ansicht eines Polbrückenhalters,
• 63 eine perspektivische Ansicht einer Polbrückenhalter-Kette,
• 64 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einer Polbrückenhalter-Kette,
• 65 eine perspektivische Ansicht eines weiteren Polbrückenhalters,
• 66 eine perspektivische Ansicht einer weiteren Polbrückenhalter-Kette,
• 67 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einer weiteren Polbrückenhalter-Kette,
• 68 eine perspektivische Ansicht zweier Polbrückenhalter-Ketten,
• 69 eine perspektivische Ansicht zweier Polbrückenhalter-Ketten, die über wenigstens eine Zwischenplatte miteinander verbunden sind,
• 70 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit zwei Polbrückenhalter-Kette, die über wenigstens eine Zwischenplatte miteinander verbunden sind,
• 71 eine Draufsicht auf die Zwischenplatte der 60, die zwischen zwei benachbarten Energiespeicherzellen angeordnet ist,
• 72 eine perspektivische Ansicht zweier Polbrückenhalter, die einen Polbrückenhalter-Querrahmen aufweisen.
• 73 eine perspektivische Ansicht einer Polbrückenhalter-Kette, wobei die Polbrückenhalter Polbrückenhalter-Querrahmen aufweisen,
• 74 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einer Polbrückenhalter-Kette, die mit einem Gehäuse des Energiespeichermoduls verbunden sind,
• 75 eine Draufsicht auf ein Energiespeichermodul mit zwei Polbrückenhalter-Ketten, die über wenigstens eine Zwischenplatte miteinander verbunden sind,
• 76 eine perspektivische Ansicht eines Energiespeichermoduls.
• 77 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einem Zellüberwachungssystem, das mehreren Zwischenplatten angeordnet ist,
• 78 eine Seitenansicht eines Teilausschnittes der 77,
• 79 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einem Zellüberwachungssystem, das mehreren Polbrückenhaltern angeordnet ist,
• 80 eine perspektivische Ansicht eines Teilausschnittes der 79,
• 81 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit einem Zellüberwachungssystem, das an mehreren Leitvorrichtungen mehrerer Zwischenplatten angeordnet ist,
• 82 eine weitere perspektivische Ansicht der 81,
• 83 eine perspektivische Ansicht eines Energiespeicherzellenstapels bevor dieser in einer Gehäuseschale eingesetzt wird,
• 84 eine perspektivische Ansicht eines Energiespeicherzellenstapels nachdem dieser in einer Gehäuseschale eingesetzt ist und bevor ein Gehäusedeckel auf die Gehäuseschale aufgesetzt wird,
• 85 eine perspektivische Ansicht auf den Gehäusedeckel eines Energiespeichermoduls, nachdem mehrere Zwischenplatten stoffschlüssig mit dem Gehäusedeckel und der Gehäuseschale verbunden wurden,
• 86 eine perspektivische Ansicht auf den Gehäuseboden eines Energiespeichermoduls, nachdem mehrere Zwischenplatten stoffschlüssig mit dem Gehäusedeckel und der Gehäuseschale verbunden wurden,
• 87 eine perspektivische Ansicht eine Zwischenplatte mit Schweißdomen,
• 88 eine perspektivische Ansicht eines Energiespeicherzellenstapels mit Zwischenplatten gemäß 87,
• 89 eine perspektivische Ansicht eines Gehäuses mit Strukturrippen
• 90 eine seitliche Schnittansicht durch das Gehäuse der 89,
• 91 eine weitere Ausführungsform eines Energiespeichermoduls.

It show each schematically

• 1 a perspective view of a prismatic energy storage cell,
• 2 a side view of an embodiment of an energy storage cell stack according to the invention,
• 3 a side view of an embodiment of an energy storage module according to the invention,
• 4th a side view of an embodiment of an energy storage module according to the invention before an assembly process,
• 5 a side view of the energy storage module of FIG 4th during the assembly process,
• 6th a side view of the energy storage module of FIG 4th after the assembly process,
• 7th a side view of a further embodiment of an energy storage module according to the invention,
• 8th a side view of a further embodiment of an energy storage cell stack according to the invention,
• 9 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 10 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 11 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 12 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 13 a side view of a further embodiment of an energy storage module according to the invention,
• 14th a further side view of the energy storage module of FIG 13 ,
• 15th a perspective view of an energy storage cell stack according to the invention,
• 16 a further perspective view of an energy storage cell stack according to the invention,
• 17th a further perspective view of an energy storage cell stack according to the invention,
• 18th a further perspective view of an energy storage cell stack according to the invention,
• 19th a perspective view of an intermediate plate according to the invention,
• 20th an end view of an intermediate plate according to the invention,
• 21st a plan view of an intermediate plate according to the invention,
• 22nd a top view of an intermediate plate used in the energy storage module,
• 23 an end view of a further embodiment of an intermediate plate according to the invention,
• 24 a greatly simplified representation of a temperature control system according to the invention.
• 25th a side view of an embodiment of an energy storage module according to the invention before an assembly process,
• 26th a side view of the energy storage module of FIG 25th during the assembly process,
• 27 a side view of the energy storage module of FIG 25th after the assembly process,
• 28 a side view of a further embodiment of an energy storage module according to the invention,
• 29 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 30th a side view of a further embodiment of an energy storage cell stack according to the invention,
• 31 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 32 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 33 a side view of a further embodiment of an energy storage cell stack according to the invention,
• 34 a side view of a further embodiment of an energy storage module according to the invention,
• 35 a further side view of the energy storage module of FIG 34 ,
• 36 an end view of an intermediate plate according to the invention,
• 37 a plan view of an intermediate plate according to the invention,
• 38 a top view of a clamping device used in the energy storage module,
• 39 a side view of an intermediate plate according to the invention,
• 40 a side view of the intermediate plate of 39 , wherein the intermediate plate is arranged between two adjacent energy storage cells,
• 41 a side view of the intermediate plate of 40 after a swelling process of the energy storage cells,
• 42 a cross section through an intermediate plate according to the invention with return spring elements, the intermediate plate being arranged between two adjacent energy storage cells,
• 43 a cross section through the intermediate plate of 42 after a swelling process of the energy storage cells,
• 44 a side view of an intermediate plate according to the invention with a wave-shaped return spring element, wherein the intermediate plate is arranged between two adjacent energy storage cells,
• 45 a side view of the intermediate plate of 44 after a swelling process of the energy storage cells,
• 46 an end view of an intermediate plate according to the invention,
• 47 a lateral partial section of an energy storage module according to the invention,
• 48 an end view of an intermediate plate according to the invention with an I-type intermediate temperature control fluid path,
• 49 the intermediate plate of the 48 with meandering flow,
• 50 an end view of an intermediate plate according to the invention with a further L-type intermediate temperature control fluid path,
• 51 the intermediate plate of the 50 with meandering flow,
• 52 an end view of an intermediate plate according to the invention with an L-like intermediate temperature control fluid path,
• 53 the intermediate plate of the 52 with meandering flow,
• 54 an end view of an intermediate plate according to the invention with a T-like intermediate temperature control fluid path,
• 55 the intermediate plate of the 54 with meandering flow,
• 56 an end view of an intermediate plate according to the invention with a Z-type intermediate temperature control fluid path,
• 57 the intermediate plate of the 56 with meandering flow,
• 58 a perspective view of an intermediate plate according to the invention with a guide device,
• 59 a plan view of the intermediate plate of 58 , which is arranged between two adjacent energy storage cells,
• 60 a perspective view of an intermediate plate according to the invention with positioning aids,
• 61 a plan view of the intermediate plate of 60 , which is arranged between two adjacent energy storage cells,
• 62 a perspective view of a pole bridge holder,
• 63 a perspective view of a pole bridge holder chain,
• 64 a perspective view of an energy storage cell stack with a pole bridge holder chain,
• 65 a perspective view of another pole bridge holder,
• 66 a perspective view of another pole bridge holder chain,
• 67 a perspective view of an energy storage cell stack with a further pole bridge holder chain,
• 68 a perspective view of two pole bridge holder chains,
• 69 a perspective view of two pole bridge holder chains that are connected to one another via at least one intermediate plate,
• 70 a perspective view of an energy storage cell stack with two pole bridge holder chains that are connected to one another via at least one intermediate plate,
• 71 a plan view of the intermediate plate of 60 , which is arranged between two adjacent energy storage cells,
• 72 a perspective view of two pole bridge holders, which have a pole bridge holder cross frame.
• 73 a perspective view of a pole bridge holder chain, the pole bridge holder having pole bridge holder cross frames,
• 74 a perspective view of an energy storage cell stack with a pole bridge holder chain, which are connected to a housing of the energy storage module,
• 75 a top view of an energy storage module with two pole bridge holder chains that are connected to one another via at least one intermediate plate,
• 76 a perspective view of an energy storage module.
• 77 a perspective view of an energy storage cell stack with a cell monitoring system, which is arranged several intermediate plates,
• 78 a side view of a partial section of the 77 ,
• 79 a perspective view of an energy storage cell stack with a cell monitoring system, which is arranged multiple pole bridge holders,
• 80 a perspective view of a partial section of FIG 79 ,
• 81 a perspective view of an energy storage cell stack with a cell monitoring system, which is arranged on several guide devices of several intermediate plates,
• 82 another perspective view of FIG 81 ,
• 83 a perspective view of an energy storage cell stack before it is used in a housing shell,
• 84 a perspective view of an energy storage cell stack after it has been inserted into a housing shell and before a housing cover is placed on the housing shell,
• 85 a perspective view of the housing cover of an energy storage module after several intermediate plates have been firmly connected to the housing cover and the housing shell,
• 86 a perspective view of the housing bottom of an energy storage module after several intermediate plates have been firmly connected to the housing cover and the housing shell,
• 87 a perspective view of an intermediate plate with welding domes,
• 88 a perspective view of an energy storage cell stack with intermediate plates according to FIG 87 ,
• 89 a perspective view of a housing with structural ribs
• 90 a side sectional view through the housing of FIG 89 ,
• 91 another embodiment of an energy storage module.

The 1 shows a prismatic energy storage cell 301 running along a stack axis 302 two large areas at a distance from one another 303 having, these large areas 303 over a lateral surface 304 are connected to each other. On the outer surface 304 , in particular on a partial surface of the lateral surface 304 , are two pole contacts that are spaced apart from one another 306 arranged over which the electrical power of the energy storage cell 301 can be tapped. These pole contacts 306 are exemplary with respect to a transverse axis 217 arranged spaced from each other. The large areas 303 are oriented substantially parallel to a surface passing through the transverse axis 217 and through one to the transverse axis 217 transversely and / or vertically aligned vertical axis 207 is trained. The transverse axis 217 and the vertical axis 207 are each transverse and / or perpendicular to the stack axis 302 aligned. The outer surface 304 extends at least partially along a circumferential direction 305 around the stacking axis 302 .

The 2 shows an energy storage cell stack 300 with several energy storage cells 301 , 301a and 301b on that along a stack axis 302 are arranged. Between at least two adjacent energy storage cells 301a , 301b is with respect to the stack axis 302 at least one intermediate plate 600 arranged. The intermediate plate 600 can be an expansion along the stack axis 302 have that is smaller than the distance between two large areas 303 an energy storage cell 301 along the stack axis 302 . The intermediate plate 600 can at least partially extend along a vertical axis 207 have, which is greater than the expansion of an energy storage cell 301 along the vertical axis 207 . Furthermore, the at least one energy storage cell stack has 300 a jig 400 for bracing the energy storage cells against each other 301 along the stack axis 302 on. The jig 400 has two end-face clamping bodies 402 on, between which the energy storage cells 301 are arranged, the end-face clamping body 402 with the at least one bracing means 403 are positively and / or cohesively connected so that the clamping device 400 tensioning of the energy storage cells 301 along the stack axis 302 provides. The bracing device 403 is indicated by two dashed lines running along the vertical axis 207 are spaced from each other.

The 3 shows an energy storage module 100 with a housing 200 that has a housing interior 201 and a housing inner wall 202 having the interior of the housing 201 limited. Inside the housing 201 of the energy storage module 100 is at least one energy storage cell stack 300 arranged. The case 200 has a housing cover 204 and a housing shell 205 on, with the housing shell 205 a case back 206 trains along a vertical axis 207 at a distance from the housing cover 204 is arranged. Furthermore, the housing shell 205 at least one side wall 212 on. The housing shell 205 can for example have four side walls 212 have the bordering around the housing cover 204 are arranged. Part of the inner wall of the housing 202 is through an inner lid wall 208 of the housing cover 204 educated. Part of the inner wall of the housing 202 is through an inner bottom wall 209 of the case back 206 educated. Part of the inner wall of the housing 202 is through an inner side wall 213 the side wall 212 educated. The energy storage module also includes 100 at least one temperature control fluid path 500 for guiding a temperature control fluid, the walls of which at least partially pass through the inner wall of the housing 202 and the at least one energy storage cell stack 300 are formed so that the housing inner wall 202 and the at least one energy storage cell stack 300 are directly wettable by the temperature control fluid. The temperature control fluid path 500 is essentially determined by the volume of the housing interior 201 formed, which is not through the energy storage cell stack 300 is filled out.

The 4th shows an energy storage module 100 before an assembly process.

The intermediate plates 600 each have at least one connecting section 601 , in particular at least one cover-side connecting section 602 and at least one bottom connecting section 603 , on. The inside wall of the housing 202 has at least one mating connection section 203 on. In particular, the cover inner wall 208 at least one cover-side mating connection section 210 on, with the bottom inner wall 209 at least one bottom-side mating connection section 211 having. The cover-side mating connection section 210 and the bottom mating connection section 211 can counter locking elements 215 have, which are complementary to locking elements 607 the intermediate plate 600 are trained. Such locking elements 607 are in the 19th more clearly recognizable. According to the 4th to 6th an assembly process of the energy storage module takes place 100 so that initially an energy storage cell stack 300 along the vertical axis 207 so in the housing shell 205 is used that the bottom-side connecting section 603 and the bottom mating connection section 211 by shifting the Energy storage cell stack 300 along the stack axis 302 form a first releasable connection. This first releasable connection restricts the displaceability of the energy storage cell stack 300 along the vertical axis 207 a. This situation is in the 5 shown. Then the housing cover 204 along the vertical axis 207 so on the housing shell 205 out that the cover-side connecting portion 602 and the cover-side mating connection section 210 by moving the housing cover 204 along the stack axis 302 form a second releasable connection. This first releasable connection and the second connection restrict the displaceability of the energy storage cell stack 300 and the housing cover 204 along the vertical axis 207 a. The intermediate plates 600 form tie rods, the tensile forces along the vertical axis 207 take up. This situation is in the 6th shown. The 25th to 27 show a similar assembly process, with the respective connecting portions through the jig 400 are trained.

In the 7th are the cover-side mating connection section 210 and the bottom mating connection section 211 mirrored, especially around the vertical axis 207 mirrored, trained. This enables the energy storage cell stack to be fixed 300 within the energy storage module 100 with respect to the stack axis 302 be achieved. The 28 shows a similar embodiment, the respective connecting sections through the clamping device 400 are trained.

The 8th to 12 show further embodiments of the energy storage cell stack 300 or further embodiments of the intermediate plate 600 . In the 8th has the intermediate plate 600 a retaining collar 606 on, the at least one energy storage cell 301 of the energy storage cell stack 300 at least partially encompassed. In the 8th becomes a shift in the energy storage cell 301 with respect to the vertical axis 207 towards the bottom of the case 206 prevented. In the 9 has the intermediate plate 600 a retaining collar 606 on, of the two adjacent energy storage cells 301a and 301b of the energy storage cell stack 300 at least partially encompassed. In the 9 becomes a displacement of two energy storage cells 301a and 302b with respect to the vertical axis 207 towards the bottom of the case 206 prevented. In the 10 has the intermediate plate 600 two retaining collars 606 on that with respect to the vertical axis 207 Are arranged spaced from one another and each have two adjacent energy storage cells 301a and 301b of the energy storage cell stack 300 reach around at least in sections. In the 11 has the intermediate plate 600 two retaining collars 606 on that with respect to the vertical axis 207 Are arranged spaced from one another and each have an adjacent energy storage cell 301a and 301b of the energy storage cell stack 300 reach around at least in sections. In the 10 and 11 becomes a displacement of two energy storage cells 301a and 302b with respect to the vertical axis 207 towards the bottom of the case 206 as well as in the direction of the housing cover 204 prevented. The 29 to 32 show similar configurations, the respective connecting sections through the clamping device 400 are trained.

In the 12 form the intermediate plates 600 at least one intermediate connection section each 605 out. The jig 400 forms at least one counter-interconnection section 401 off, the interconnection portion 605 a releasable connection with the mating interconnection section 401 trains. This allows the intermediate plates 600 and / or the energy storage cells 301 with respect to the stack axis 302 relative to the jig 400 be fixed. The 33 shows a similar embodiment, the respective connecting sections through the clamping device 400 are trained.

In the 13 are the cover-side connecting section 602 and the cover-side mating connection section 210 by at least one locking bolt 216 connectable to one another in a form-fitting manner. The locking latch 216 is about a means of confirmation 218 along the stack axis 302 slidable and has a plurality of locking pins spaced apart from one another 219 on. The locking latch 216 is by at least one guide section 608 an intermediate plate 600 guided. In the 13 there is no form fit between the cover-side connecting section 602 and the cover-side mating connection section 210 in front. In the 14th is the locking latch 216 with respect to the stack axis 302 shifted so that between the cover-side connecting portion 602 and the cover-side mating connection section 210 there is a form fit. The 34 to 35 show similar configurations, the respective connecting sections through the clamping device 400 are trained.

The 15th to 18th show a perspective view of an energy storage cell stack 300 , where in the 16 Pole bridges 307 for electrically conductive contacting of at least two pole contacts of two adjacent energy storage cells 301a , 301b are visible. The energy storage cells 301 can be connected electrically in series and / or in parallel. The jig 400 , especially the bracing means 403 , can flow through openings 404 for the temperature control fluid to form a fluidic connection between the temperature control fluid path 500 and an intermediate temperature control fluid path 501 , the Indian 18th is shown to enable.

The 19th to 21st show several views of an intermediate plate 600 . The intermediate plate 600 has a large number of connecting webs 610 which are arranged at a distance from one another, with between the connecting webs 610 Intermediate spaces 611 are trained. The connecting bridges 610 have a longitudinal direction along the vertical axis 207 on. Along the vertical axis 207 spaced locking elements 607 are over the connecting bridges 610 connected with each other. The locking elements 607 and / or the retaining collar 606 are along the transverse axis 217 and / or in the circumferential direction 305 arranged spaced from one another. Especially in the 21st is clearly visible that the intermediate plate 600 at least two lateral retaining collars 606a forms the at least one energy storage cell 301 can partially encompass that a shift of the energy storage cell 301 along the transverse axis 217 is prevented. The 36 to 37 show several views of an intermediate plate 600 that with a jig 400 can be used, which forms connecting sections.

The 22nd shows a housing 200 with four side walls 212 , with two of the side walls as front side walls 220 and 220a are formed, the surface normal vector of which is essentially parallel to the stack axis 302 is. The intermediate plate 600 forms at least one connection section on the side wall 604 off, with a side wall 212 at least one side wall-side mating connection section 214 forms, wherein the sidewall-side connecting portion 604 a releasable connection with the side wall-side mating connection section 214 forms so that a displacement of the intermediate plate 600 along the stack axis 302 is prevented. In the example not shown with an energy storage cell stack 300 can shift the energy storage cell stack 300 along the stack axis 302 be prevented. The 38 shows a similar embodiment, the respective connecting sections through the clamping device 400 are trained.

The 23 shows an intermediate plate 600 running along the circumferential direction 305 at least one edge-side spacer element 612 for spacing the at least two adjacent energy storage cells 301 along the stack axis 302 having. The edge-side spacer element 612 delimited edging an intermediate plate body 613 . The intermediate plate body 613 can be designed differently in sections. The intermediate plate body 613 can be a plate-shaped solid body 609 and / or a recording 614 form for a compression body, not shown. The intermediate plate body 613 can handle a variety of connecting webs 610 which are arranged at a distance from one another, wherein between the connecting webs 610 Intermediate spaces 611 are trained. The intermediate plate 600 and / or the edge-side spacer element 612 can for a fluidic connection of the temperature control fluid path 500 with your intermediate temperature control fluid path 501 at least one temperature control fluid opening 502 form.

The 24 shows a greatly simplified temperature control system 102 for a traction battery 101 an electric or hybrid vehicle, the traction battery 101 several energy storage modules 100 may have.

The 39 shows an intermediate plate 600 , which has at least a portion that has a first cross-sectional area transverse to a vertical axis 207 having, wherein the first cross-sectional area along the vertical axis 207 has a variation. This variation is due to the change in the material thickness of the intermediate plate 600 with respect to the stack axis 302 along the vertical axis 207 recognizable. The intermediate plate is an example 600 by an edge-side spacer element 612 and an intermediate plate body 613 formed, the edge-side spacer element 612 the intermediate plate body 613 bordered limited. The edge-side spacer element 612 has a wall thickness 616 with respect to the stack axis 302 that is greater than a minimum wall thickness 617 of the intermediate plate body 613 with respect to the stack axis 302 . The wall thickness 616 is essentially constant along the vertical axis 207 , whereas the wall thickness of the intermediate plate body 613 in the direction of a central axis 310 decreases and the minimum wall thickness 617 reached. Thus, the intermediate plate body forms 613 a section of the intermediate plate 600 from having a first cross-sectional area transverse to a vertical axis 207 having, wherein the first cross-sectional area along the vertical axis 207 has a variation. In particular, the first cross-sectional area increases along the vertical axis 207 in the direction of a central axis 310 from.

Like in the 39 indicated, the intermediate plate 600 and / or the intermediate plate body 613 for example, have a concave partial end face that of a large area 303 an energy storage cell 301 opposite. The concave partial end face forms a wall of an expansion space 309 from the one with respect to the stack axis 302 between the intermediate plate 600 and at least one energy storage cell 301 is trained.

As long as the energy storage cell has suffered no swelling or a very slight swelling process, the concave partial end face is with respect to the stack axis 302 from the large area 303 the energy storage cell 301 spaced. This corresponds to the state in the 40 is indicated. With increasing deformation due to a swelling process becomes the expansion space 309 from the energy storage cell 301 filled in until the large area 303 the energy storage cell 301 rests against the concave partial end face. This corresponds to the state in the 41 is indicated.

The 42 shows a cross section transverse to the vertical axis 207 , which coincides with the surface normal vector of the drawing plane, through an intermediate plate 600 , which are exemplified by a spacer element on the edge 612 and an intermediate plate body 613 is formed, wherein the intermediate plate body 613 with respect to the transverse axis 217 forms a plurality of spaced apart sections. The subsections form return spring elements which are in an inclined position between the two adjacent energy storage cells 301 are arranged. This corresponds to the state in the 42 is indicated. When an energy storage cell swells 301 the return spring element can be caused by the deformation of the energy storage cell 301 move from an inclined position to a reduced inclined position or even to a parallel position. Such a parallel position is in the 43 indicated.

An inclined position can exist if a web main surface 618 of a section, that of a large area 303 an energy storage cell 301 opposite, is not aligned parallel to a front plane that is from the transverse axis 217 and the vertical axis 207 is stretched. There is a reduced inclination when the angle between the main surface of the web 618 and the frontal plane is reduced compared to the inclination. A parallel position exists when the main surface of the web 618 is aligned essentially parallel to the face plane.

The 44 shows a side view of an intermediate plate according to the invention 600 with a wave-shaped return spring element, the intermediate plate 600 between two adjacent energy storage cells 301 is arranged. After a swelling process of at least one energy storage cell, the wave-shaped return spring element experiences an elastic deformation with respect to the stack axis 302 . This corresponds to the state in the 45 is indicated. The waviness (distance between the shaft tips and / or number of corrugations) of the wave-shaped return spring element is in the 44 and 45 only indicated by way of example and can be less pronounced.

The 46 shows an intermediate plate 600 , which are exemplified by a spacer element on the edge 612 and an intermediate plate body 613 is formed, wherein the intermediate plate body 613 with respect to the transverse axis 217 forms a plurality of spaced apart sections. These sections can be used as connecting webs 610 , in particular as a tie rod. These subsections have a longitudinal extension along the vertical axis 207 on. Between the connecting bars 610 are spaces in between 611 educated. Any space in between 611 is fluidic with a first temperature control fluid opening 502 connected by the edge spacer 612 is trained. The first temperature control fluid opening 502 can have a temperature control fluid inlet 503 form, which is preferably a housing bottom, not shown 206 of the energy storage module 100 can be arranged opposite one another. Any space in between 611 is fluidic with a second temperature control fluid opening 502 connected by the edge spacer 612 is trained. The second temperature control fluid opening 502 can have a temperature control fluid outlet 504 form, which is preferably a housing cover, not shown 204 of the energy storage module 100 can be arranged opposite one another. The temperature control fluid inlets 503 the respective intermediate spaces 611 are with respect to the transverse axis 217 arranged spaced from one another. The temperature control fluid outlets 503 the respective intermediate spaces 611 are with respect to the transverse axis 217 arranged spaced from one another.

The 47 shows a side section of an energy storage module 100 , the bracing means 403 with respect to the stack axis 302 spaced flow openings 404 forms, so that the intermediate temperature control fluid path 501 , the walls of which by the opposite large surfaces 303 two neighboring energy storage cells 301 and the intermediate plate arranged therebetween 600 be formed with the temperature control fluid path 500 is fluidically connected. The intermediate plates 600 have, for example, retaining collars 606 for fixing the energy storage cells 301 on.

The 48 shows an intermediate plate 600 with an intermediate temperature control fluid path 501 , which is designed to run essentially linearly and / or is designed to be essentially I-shaped. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via a first temperature control fluid opening 502 that have a temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. Within the intermediate temperature control fluid path 501 the temperature control fluid flows essentially along the vertical axis 207 . The temperature control fluid then flows essentially along an outflow direction 626 via a second temperature control fluid opening 502a that have a temperature control fluid outlet 504 forms from the intermediate temperature control fluid path 501 . It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face 600 as an intermediate temperature control fluid path 501 are trained. The remaining area viewed from the front that is not Formation of the intermediate temperature control fluid path 501 is used, for example, recordings with inserted compression bodies 615 form. The remaining surface viewed from the front can also be a plate-shaped solid body 609 the intermediate plate 600 be trained. In this figure, these remaining areas are indicated by black solid areas. In this embodiment, the intermediate plate 600 two with respect to the transverse axis 217 spaced-apart remaining surfaces, which through the intermediate temperature control fluid path 501 are separated from each other.

In the 49 is the intermediate plate 600 the 49 shown, the intermediate temperature control fluid path 501 additional cross bars 619 which are designed such that a temperature control fluid flows through the intermediate temperature control fluid path 501 along the intermediate temperature control fluid path 501 follows a meandering flow path.

The 50 shows an intermediate plate 600 with an intermediate temperature control fluid path 501 , which is designed to run essentially linearly and / or is designed to be essentially I-shaped. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via a first temperature control fluid opening 502 that have a temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. Within the intermediate temperature control fluid path 501 the temperature control fluid flows essentially along the transverse axis 217 . The temperature control fluid then flows essentially along an outflow direction 626 via a second temperature control fluid opening 502a that have a temperature control fluid outlet 504 forms from the intermediate temperature control fluid path 501 . It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face 600 as an intermediate temperature control fluid path 501 are trained. The remaining area viewed at the end that is not used to form the intermediate temperature control fluid path 501 is used, for example, recordings with inserted compression bodies 615 form. The remaining surface viewed from the front can also be a plate-shaped solid body 609 the intermediate plate 600 be trained. In this figure, these remaining areas are indicated by black solid areas. In this embodiment, the intermediate plate 600 two with respect to the vertical axis 207 spaced-apart remaining surfaces, which through the intermediate temperature control fluid path 501 are separated from each other.

In the 51 is the intermediate plate 600 the 50 shown, the intermediate temperature control fluid path 501 additional cross bars 619 which are designed such that a temperature control fluid flows through the intermediate temperature control fluid path 501 along the intermediate temperature control fluid path 501 follows a meandering flow path.

The 52 shows an intermediate plate 600 with an intermediate temperature control fluid path 501 , which is substantially L-shaped. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via a first temperature control fluid opening 502 that have a temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. Within the intermediate temperature control fluid path 501 the temperature control fluid initially flows essentially along the transverse axis 217 and then essentially along the vertical axis 207 . The temperature control fluid then flows essentially along an outflow direction 626 via a second temperature control fluid opening 502a that have a temperature control fluid outlet 504 forms from the intermediate temperature control fluid path 501 . It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face 600 as an intermediate temperature control fluid path 501 are trained. The remaining area viewed at the end that is not used to form the intermediate temperature control fluid path 501 is used, for example, recordings with inserted compression bodies 615 form. The remaining surface viewed from the front can also be a plate-shaped solid body 609 the intermediate plate 600 be trained. In this figure, these remaining areas are indicated by black solid areas. In this embodiment, the intermediate plate 600 two with respect to the transverse axis 217 and / or with respect to the vertical axis 207 spaced-apart remaining surfaces, which through the intermediate temperature control fluid path 501 are separated from each other.

In the 53 is the intermediate plate 600 the 52 shown, the intermediate temperature control fluid path 501 additional cross bars 619 which are designed such that a temperature control fluid flows through the intermediate temperature control fluid path 501 along the intermediate temperature control fluid path 501 follows a meandering flow path.

The 54 shows an intermediate plate 600 with an intermediate temperature control fluid path 501 , which is substantially T-shaped. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via a first temperature control fluid opening 502 that have a temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via another temperature control fluid opening 502b that have another temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. Within the intermediate temperature control fluid path 501 the temperature control fluid initially flows essentially along the transverse axis 217 and then essentially along the vertical axis 207 . Then it flows Tempering fluid essentially along an outflow direction 626 via a second temperature control fluid opening 502a that have a temperature control fluid outlet 504 forms from the intermediate temperature control fluid path 501 . It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face 600 as an intermediate temperature control fluid path 501 are trained. The remaining area viewed at the end that is not used to form the intermediate temperature control fluid path 501 is used, for example, recordings with inserted compression bodies 615 form. The remaining surface viewed from the front can also be a plate-shaped solid body 609 the intermediate plate 600 be trained. In this figure, these remaining areas are indicated by black solid areas. In this embodiment, the intermediate plate 600 three remaining areas through the intermediate temperature control fluid path 501 are separated from each other. Two remaining areas are with respect to the transverse axis 217 spaced from each other, these two remaining surfaces each with respect to the vertical axis 207 are arranged at a distance from the third remaining area.

In the 55 is the intermediate plate 600 the 54 shown, the intermediate temperature control fluid path 501 additional cross bars 619 which are designed such that a temperature control fluid flows through the intermediate temperature control fluid path 501 along the intermediate temperature control fluid path 501 follows a meandering flow path.

The 56 shows an intermediate plate 600 with an intermediate temperature control fluid path 501 , which is essentially Z-shaped. The intermediate temperature control fluid path 501 is designed so that a temperature control fluid along an inflow direction 625 via a first temperature control fluid opening 502 that have a temperature control fluid inlet 503 forms, in the intermediate temperature control fluid path 501 can flow in. Within the intermediate temperature control fluid path 501 the temperature control fluid initially flows essentially along the transverse axis 217 and then essentially along the vertical axis 207 . The temperature control fluid then flows essentially along the transverse axis 217 . The temperature control fluid then flows essentially along an outflow direction 626 via a second temperature control fluid opening 502a that have a temperature control fluid outlet 504 forms from the intermediate temperature control fluid path 501 . It can be provided that at least 50%, in particular at least 60%, of an area of the intermediate plate viewed from the end face 600 as an intermediate temperature control fluid path 501 are trained. The remaining area viewed at the end that is not used to form the intermediate temperature control fluid path 501 is used, for example, recordings with inserted compression bodies 615 form. The remaining surface viewed from the front can also be a plate-shaped solid body 609 the intermediate plate 600 be trained. In this figure, these remaining areas are indicated by black solid areas. In this embodiment, the intermediate plate 600 two with respect to the transverse axis 217 and / or with respect to the vertical axis 207 spaced-apart remaining surfaces, which through the intermediate temperature control fluid path 501 are separated from each other.

In the 57 is the intermediate plate 600 the 56 shown, the intermediate temperature control fluid path 501 additional cross bars 619 which are designed such that a temperature control fluid flows through the intermediate temperature control fluid path 501 along the intermediate temperature control fluid path 501 follows a meandering flow path.

The 58 shows an intermediate plate 600 running along the circumferential direction 305 at least one edge-side spacer element 612 for spacing the at least two adjacent energy storage cells 301 having along the stack axis. The spacing between the at least two adjacent energy storage cells 301 is in plan view of 59 shown. The edge-side spacer element 612 at least partially frames two recordings 614 for compression bodies 615 which are not shown. Furthermore, the edge-side spacer element borders 612 a flow guide structure 620 . The two shots 614 for compression bodies 615 by the flow guide structure 620 with respect to the transverse axis 217 are separated from each other, and the flow guide structure 620 form an intermediate plate body 613 out.

The flow guide structure 620 has a checkerboard-like arrangement of material sections and material-free sections, the material sections being, for example, curved. The flow guide structure 620 is of several with respect to the transverse axis 217 spaced apart support webs 627 partly with respect to the vertical axis 207 interspersed.

On the edge spacer 612 are two guiding devices 622 and 622a formed with respect to the vertical axis 217 are arranged spaced from one another. Furthermore, on the edge-side spacer element 612 at least one connecting section 624 for connection to a pole bridge holder, not shown 307 educated.

The 60 shows an intermediate plate 600 running along the circumferential direction 305 at least one edge-side spacer element 612 for spacing the at least two adjacent energy storage cells 301 having along the stack axis. The spacing between the at least two adjacent energy storage cells 301 is in plan view of 61 shown. The edge-side spacer element 612 bordered at least partially two shots 614 for compression bodies 615 which are not shown. Furthermore, the edge-side spacer element borders 612 a turbulator structure 621 . The two shots 614 for compression bodies 615 created by the turbulator structure 621 with respect to the transverse axis 217 are separated from each other, and the turbulizer structure 621 form an intermediate plate body 613 out.

The turbulator structure 621 has a checkerboard-like arrangement of material sections and material-free sections, the material sections being designed, for example, like shovels. The turbulator structure 621 is of several with respect to the transverse axis 217 spaced apart support webs 627 completely with respect to the vertical axis 207 interspersed.

On the edge spacer 612 are two guiding devices 622 and 622a formed with respect to the vertical axis 217 are arranged spaced from one another. Furthermore, on the edge-side spacer element 612 at least one connecting section 624 for connection to a pole bridge holder, not shown 307 educated. Furthermore, on the edge-side spacer element 612 at least one positioning aid 623 educated.

The positioning aid 623 can have at least two positioning bars 628 train that along the transverse axis 217 are arranged spaced from one another. Here, the distance between the two positioning bars 628 along the transverse axis 217 essentially the extension of a pole contact 306 along the transverse axis 217. At least one positioning bar 628 can have a longitudinal extension along the stack axis 302 exhibit. The positioning aid 623 and in particular the at least two positioning webs 628 can so along the stack axis 302 moved so that they touch a pole contact 306 issue.

The 62 shows a pole bridge holder 308 , which is designed as an identical part, so that several pole bridge holders 308 Can be connected to one another to form a pole bridge holder chain 319 according to 63 to train. The at least one pole bridge holder 308 forms a pole bridge holder frame 313 from the at least one pole bridge holder recess 320 of the pole bridge holder 308 delimited edging, the at least one pole bridge holder recess 320 for at least partial inclusion of a pole bridge 307 is trained. The pole bridge holder 308 forms at least one pole bridge holder connecting section 311 and at least one pole bridge holder mating connection section 312 in such a way that at least two pole bridge holders designed as identical parts 308 via the at least one pole bridge holder connecting section 311 of the one pole bridge holder 308 and the at least one pole bridge holder mating connection section 312 of the other terminal bridge holder 308 Can be connected to one another to form a pole bridge holder chain 319 according to 63 to train.

The pole bridge holder connection section 311 includes two sections that relate to the transverse axis 217 are arranged spaced from each other. The pole bridge holder mating connection section 312 includes two sections that relate to the transverse axis 217 are arranged spaced from each other. The pole bridge holder connection section 311 and the terminal link holder mating connection section 312 are with respect to the stacking axis 302 arranged spaced from each other.

The pole bridge 307 can have at least one pole bridge holder clamping section 321 of the pole bridge holder 308 in the pole bridge holder 308 and / or in the pole bridge holder recess 320 jammed and / or fixed. The pole bridge 307 can be done via four terminal link holder clamping sections 308 of the pole bridge holder 308 in the pole bridge holder 308 and / or in the pole bridge holder recess 320 be clamped and / or fixed, the four pole bridge holder clamping sections 321 with respect to a circumferential direction of the pole bridge holder frame 313 are spaced apart from each other.

The pole bridge holder 308 forms two pole bridge holder-intermediate plate connecting sections 314 and 314a from that with respect to the transverse axis 217 and with respect to the stack axis 302 are arranged spaced from each other. The pole bridge holder-intermediate plate connecting sections 314 and 314a are formed by extensions that extend from the pole bridge holder frame 313 from the pole bridge holder recess 320 stretch away.

The 64 shows the pole bridge holder chain 319 the 63 with included pole bridges 307 , with the pole bridges 307 invisible pole contacts 306 two neighboring energy storage cells 301 connect electrically conductive.

The pole bridge holder 308 can be plugged together and / or lined up with respect to the stacking axis 302 designed to be a pole bridge holder chain 319 to train.

The 65 to 67 show a further embodiment of a pole bridge holder 308 and a pole bridge holder chain 319 , wherein the terminal bridge holder-intermediate plate connecting sections 314 and 314a through the pole bridge holder frame 313 are trained. The pole bridge holder-intermediate plate connecting sections 314 and 314a are on one side of the pole bridge holder Frame 313 formed and with respect to the transverse axis 217 arranged spaced from each other. With regard to the stacking axis 302 are the connecting sections 314 and 314a positioned essentially flush.

The 68 to 71 show a further embodiment of a pole bridge holder 308 and a pole bridge holder chain 319 , with only one pole bridge holder-intermediate plate connecting section 314 or. 314a by an extension on the pole bridge holder frame 313 is trained. In the 70 and 71 it is easy to see that the at least two with respect to the transverse axis 217 spaced pole bridge holders 308 via at least one intermediate plate 600 are connected to each other. Here, the at least one intermediate plate forms at least one pole bridge holder / intermediate plate mating connection section 315 or a connection section for connection to a pole bridge holder 624 from, wherein the pole bridge holder-intermediate plate connecting section 314 or. 314a a connection with the pole bridge holder intermediate plate mating connection section 315 for fixing the pole bridge holder 308 on the intermediate plate 600 trains.

The 72 to 74 show a further embodiment of a pole bridge holder 308 and a pole bridge holder chain 319 , at least two with respect to the transverse axis 217 spaced pole bridge holders 308 via a pole bridge holder cross frame 318 are connected to each other. The pole bridge holder 308 forms at least one pole bridge holder-housing connecting section 316 off, and a case 200 , in particular a housing shell 205 and / or a housing cover 204 , the energy storage module 100 forms at least one pole bridge holder-housing mating connection section 317 from, wherein the pole bridge holder-housing connecting section 316 a connection with the pole bridge holder housing mating connection section 317 for fixing the pole bridge holder 308 on the housing 200 , especially on the housing shell 205 and / or on the housing cover 204 , the energy storage module 100 trains.

The 75 shows a plan view of an energy storage module 100 with pole bridges 307 . Before arranging the pole bridge holder chain 319 with added pole bridges 307 on the energy storage cells 301 , the strained energy storage cells 301 via fixing sections 322 with the case 200 , especially the housing cover 204 and / or the housing shell 205 , the energy storage module 100 get connected.

The 76 shows a perspective view of an energy storage module 100 .

The 77 shows an energy storage cell stack 300 with a cell monitoring system 103 for monitoring an energy storage cell 301 and / or for monitoring several energy storage cells 301 and / or for monitoring all energy storage cells 301 . The cell monitoring system 103 is at least partially with several intermediate plates 600 mechanically connected. The cell monitoring system 103 forms several with respect to the stack axis 302 spaced recesses 104 out.

In the 78 it can be seen that at least one intermediate plate 600 at least one cell monitoring system mating connection section 629 trains, the cell monitoring system 103 at least one cell monitoring system connection section 105 forms, wherein the cell monitoring system counter connection section 629 a connection with the cell monitoring system connection section 105 for fixing the cell monitoring system 103 on the intermediate plate 600 trains. The cell monitoring system mating connector section 629 includes two with respect to the transverse axis 217 mutually spaced opposing locking lugs. The cell monitoring system connection section 105 includes two with respect to the transverse axis 217 locking lugs spaced apart from one another, which correspond and / or complement the opposing locking lugs of the cell monitoring system mating connection section 629 are trained. When the cell monitoring system 103 when assembling the energy storage cell stack 300 along the vertical axis 207 to the intermediate plate 600 is pressed, the counter-locking lugs and the locking lugs are elastically deformed and then engage around each other in an assembly position that corresponds to the illustration of the 78 corresponds.

The 79 and 80 show an energy storage cell stack 300 with a cell monitoring system 103 , the cell monitoring system 103 at least in sections on several terminal link holders 308 touching.

The intermediate plate 600 forms at least one pole bridge holder / intermediate plate mating connection section 315 off, the cell monitoring system 103 at least one cell monitoring system connection section 105 forms, wherein the pole bridge holder intermediate plate mating connection section 315 a connection with the cell monitoring system connection section 105 for fixing the cell monitoring system 103 forms on the intermediate plate.

Starting from the intermediate plate 600 can the pole bridge holder intermediate plate mating connection section 315 at least in sections initially a non-visible pole bridge holder-intermediate plate connecting section 314 of the pole bridge holder 308 enforce and then the cell monitoring system connection section 105 enforce to fix the pole bridge holder 308 and the cell monitoring system 103 to train. Enforcement of the pole bridge holder-intermediate plate connecting section 314 and / or the cell monitoring system connection section 105 can with respect to the vertical axis 207 be trained.

The 81 and 82 show an energy storage cell stack 300 with a cell monitoring system 103 , the cell monitoring system 103 at least in sections with several guide devices 622 connected is.

The cell monitoring system 103 and / or the cell monitoring system connection section 105 forms at least one locking lug, which is in by the guide device 622 Corresponding or complementary flow opening engage to establish a mechanical connection between the cell monitoring system 103 and the guide device 622 to train.

The 83 FIG. 13 shows a perspective view of an energy storage cell stack 300 before this in a housing shell 205 is used. The 84 FIG. 13 shows a perspective view of an energy storage cell stack 300 after this in the housing shell 205 was inserted and before a housing cover 204 on the housing shell 205 is put on. Connection surfaces (not shown) of at least one connection section of at least one intermediate plate 600 of the energy storage cell stack 300 lie on a section of the housing inner wall 202 touching. By means of a welding process, in particular by means of an ultrasonic welding process, the connection surface with the subsection of the housing inner wall 202 firmly connected.

In the 85 and 86 are these material connections 106 indicated. The connecting surfaces of the connecting sections of the respective intermediate plate, which are therefore not visible, extend in sections with respect to the transverse axis.
Like in the 87 shown, the interface 650 of the connecting portion form a plurality of welding domes, which in the circumferential direction 305 the intermediate plate 600 are arranged spaced from each other. Such a welding dome can be dome-like and / or hemispherical and / or cone-like.

The 88 shows an energy storage cell stack 300 with several energy storage cells 301a and 301b , with each between two adjacent energy storage cells 301 an intermediate plate with welding domes is arranged in each case.

The 89 and 90 show a case 200 an energy storage module 100 . The case 200 forms on an outside that is the interior of the housing 201 is turned away, at least in sections structural ribs 260 out. These structural ribs 260 can improve the mechanical resistance of the housing 200 improve. The structural ribs 260 can along the stack axis 302 and / or transverse axis 217 and / or vertical axis 207 be designed to run. Several structural ribs can be formed.

Areas on the outside of the housing 200 the one with the connecting surfaces 650 Cohesively connected subsections of the housing inner wall are opposite, are of the structural ribs 260 bordered limited. These areas have circular and / or elliptical delimiting contours that are formed by the structural ribs 260 are completely delimited, the structural ribs 260 essentially from the outside of the housing 200 extend away and thus a cylinder-like receptacle 250 form. This recording 250 can be designed, for example, as a positioning element for positioning a tool to produce a material connection. Such a tool can for example be a welding tool and / or an ultrasonic welding tool.

The 91 shows an energy storage module 100 , alternating either an intermediate plate 600 between the energy storage cells 301 or a compression body 615 is arranged.

Claims (15)

Energy storage module (100), in particular an energy storage module (100) for a traction battery (101) of an electric or hybrid vehicle, - with a housing (200) which has a housing interior (201) and a housing interior wall (202) which defines the housing interior (201 ) limited, - with at least one energy storage cell stack (300) which is arranged in the housing interior (201), - wherein the at least one energy storage cell stack (300) has several energy storage cells (301) which are arranged along a stack axis (302), - wherein the at least one energy storage cell stack (300) has a tensioning device (400) for bracing the energy storage cells (301) against one another along the stack axis (302), with at least one temperature control fluid path (500) for guiding a temperature control fluid, the walls of which are formed at least in sections through the housing inner wall (202) and the at least one energy storage cell stack (300), so that the housing inner wall (202) and the at least one energy storage cell stack (300) from the temperature control fluid directly are wettable, - with at least one intermediate plate (600) being arranged with respect to the stack axis (302) between at least two adjacent energy storage cells (301), - the at least one intermediate plate (600) forming at least one connecting section (601) with a connecting surface (650) - wherein the connecting surface (650) is materially connected to a section of the housing inner wall (202). Energy storage module (100) Claim 1 , characterized in that the housing (200) has a housing cover (204) and a housing shell (205), - the housing shell (205) forming a housing base (206) which is spaced apart from the housing cover (204) along a vertical axis (207) ) is arranged, - wherein a section of the housing inner wall (202) is formed by an inner cover wall (208) of the housing cover (204), - wherein a section of the housing inner wall (202) is formed by an inner base wall (209) of the housing base (206), - wherein the at least one intermediate plate (600) forms at least one cover-side connection section (602) with a cover-side connection surface, - wherein the at least one intermediate plate (600) forms at least one base-side connection section (603) with a base-side connection surface, - the cover-side connection surface with a section of the inner lid wall (208) is firmly connected, - the bo the connecting surface on the side is connected to a section of the bottom inner wall (208) with a material bond. Energy storage module (100) Claim 1 or 2 , characterized in that the at least one intermediate plate (600) is designed as a tie rod for absorbing tensile forces and / or compressive forces along the vertical axis (207). Energy storage module (100) according to one of the preceding claims, characterized in - that the at least one intermediate plate (600) is formed entirely from a plastic material, or - that the at least one intermediate plate (600) is partially formed from a plastic material, the connecting surface, in particular the cover-side connection surface and / or the base-side connection surface is formed from a plastic material. Energy storage module (100) according to one of the preceding claims, characterized in - that the section of the housing inner wall (202), which is materially connected to the connecting surface, is formed from a plastic material, and / or - that the section of the cover inner wall (208), which is materially connected to the connection surface on the cover side, is made of a plastic material, and / or that the partial section of the bottom inner wall (208) which is materially connected to the connection surface on the bottom is made of a plastic material. Energy storage module (100) according to one of the preceding claims, characterized in - that the connection surface is welded to the section of the housing inner wall (202), in particular ultrasonically welded, and / or - that the cover-side connection surface is welded to the section of the cover inner wall (208), in particular ultrasonically welded, and / or that the base-side connection surface is welded to the partial section of the base inner wall (208), in particular ultrasonically welded. Energy storage module (100) according to one of the preceding claims, characterized in that the energy storage cells (301) of the energy storage cell stack (300) are arranged at a distance from the housing inner wall (202) of the housing (200). Energy storage module (100) according to one of the preceding claims, characterized in that the at least one intermediate plate (600) along the circumferential direction (305) has at least one edge-side spacer element (612) for spacing the at least two adjacent energy storage cells (301) along the stack axis (302 ), - wherein the edge-side spacer element (612) delimits an intermediate plate body (613) of the intermediate plate (600) at least partially so as to border it. Energy storage module (100) according to one of the preceding claims, characterized in that - that the intermediate plate (600) and / or the intermediate plate body (613) at least partially forms an intermediate temperature control fluid path (501) which can be fluidically connected to at least one temperature control fluid path (500) of an energy storage module (100), and / or that the intermediate plate (600) and / or the edge spacer element (612) form at least one temperature control fluid opening (502). Energy storage module (100) according to one of the preceding claims, characterized in that at least one intermediate plate (600) is arranged between each two adjacent energy storage cells (301a, 301b) of the energy storage cell stack (300). Energy storage cell stack (300) for an energy storage module (100) according to one of the preceding claims, - With several energy storage cells (301) which are arranged along a stack axis (302), - with at least one intermediate plate (600) being arranged with respect to the stack axis (302) between at least two adjacent energy storage cells (301), - wherein the at least one intermediate plate (600) forms at least one connecting section (601) with a connecting surface, - wherein the at least one intermediate plate (600) is designed so that the connection surface (650) is in contact with a section of the housing inner wall (202) when the energy storage cell stack (300) is inserted in the energy storage module (100) before a connection process. Intermediate plate (600) for an energy storage module (100) according to one of Claims 1 to 10 and / or for an energy storage cell stack (300) according to Claim 11 - wherein the intermediate plate (600) forms at least one connecting section (601) with a connecting surface (650), - wherein the intermediate plate (600) is designed such that the connecting surface (650) is in contact with a section of the housing inner wall (202), when the energy storage cell stack (300) is inserted in the energy storage module (100) before a connection process. Traction battery (101) for an electric or hybrid vehicle, with at least one energy storage module (100) according to one of the Claims 1 to 10 . Temperature control system (102) for a traction battery (101) of an electric or hybrid vehicle, - with a traction battery (101) after Claim 13 and / or with an energy storage module (100) according to one of the Claims 1 to 10 - With a temperature control fluid, in particular with a temperature control liquid, the temperature control fluid being introduced into the temperature control fluid path (500) of at least one energy storage module (100) in order to provide temperature control for the energy storage cells (301). Method for producing a traction battery (101) according to Claim 13 and / or an energy storage module (100) according to one of the Claims 1 to 10 - In which an energy storage cell stack (300), in particular an energy storage cell stack (300) according to Claim 11 , is inserted into a housing (200) of an energy storage module (100) in such a way that a connecting surface (650) of at least one connecting section (601) of at least one intermediate plate (600) is in contact with a section of the inner wall (202) of the housing, - during a welding process , in particular by means of an ultrasonic welding process, the connecting surface (650) is materially connected to the partial section of the housing inner wall (202).

Images