DE102019219015A1 - Battery devices and methods for fixing battery cells - Google Patents

Abstract

In order to provide a battery device which can be produced simply and inexpensively, it is proposed that the battery device comprises one or more battery modules, a respective battery module comprising: a frame element; a floor element; and multiple battery cells.

Description

The present invention relates to a battery device.

The present invention is based on the object of providing a battery device which can be produced simply and inexpensively.

This object is achieved by the features of the independent device claim.

Advantageous further developments are the subject of the subclaims.

• ein Rahmenelement;
• ein Bodenelement; und
• mehrere Batteriezellen.

The battery device according to the invention preferably comprises the following: One or more battery modules, wherein a respective battery module comprises the following:

• a frame member;
• a floor element; and
• multiple battery cells.

The battery modules are preferably arranged or can be arranged along a stacking direction.

For example, it is conceivable that a battery module comprises at least approximately 50 battery cells.

It can be advantageous, for example, if a battery module comprises approximately 200 to approximately 600 battery cells, for example approximately 400 battery cells.

The battery device comprises, for example, two or more than two battery modules.

The frame element of a respective battery module is preferably designed to be closed in a ring shape.

The frame element and the base element of a respective battery module preferably define an in particular cup-shaped receiving space in which battery cells of the battery module are received.

It can be favorable if the receiving space of a battery module is delimited by the frame element and by the base element of the battery module and by the base element of an adjacent battery module.

The battery device can preferably be arranged such that the stacking direction of the battery modules runs parallel to the direction of gravity. The battery device is in particular arranged “upright”.

As an alternative to this, it is conceivable that the battery device can be arranged in such a way that the stacking direction of the battery modules is essentially perpendicular to the direction of gravity. The battery device is in particular arranged “lying down”.

The frame element of a respective battery module preferably surrounds all battery cells of the battery module, in particular in a direction perpendicular to the stacking direction.

The battery cells are preferably galvanic cells.

In particular, the battery cells are what are known as secondary cells.

It can be beneficial if the battery cells, in particular the secondary cells, are rechargeable.

The battery modules of the battery device are preferably designed to be self-supporting.

In one embodiment of the battery device, it is provided that the frame elements of the respective battery modules form housing sections of the battery device.

The frame elements of the battery modules preferably together form an outer skin of the battery device.

The frame element of a respective battery module preferably comprises an annularly closed wall.

For example, it is conceivable that the frame element comprises a connecting web which is arranged between two opposing wall sections of the wall of the frame element and connects them to one another.

In particular, a surface of the wall of the respective frame element forms part of a surface of a housing of the battery device.

It can be favorable if a respective frame element comprises a double wall which comprises an inner wall element and an outer wall element.

A wall, in particular an outer wall element, preferably forms one Double wall, of a respective frame element in a direction running perpendicular to the stacking direction of the battery modules, part of a housing of the battery device, in particular part of an overall housing of the battery device.

The frame elements of the battery modules of the battery device are therefore preferably not limited in a radial direction by an additional housing.

The manufacturing costs of the battery device can preferably be reduced by eliminating an additional housing.

In the context of this description and the appended claims, a radial direction is understood to mean, in particular, a direction running transversely, preferably perpendicularly, to the stacking direction of the battery modules.

In one embodiment of the battery device, it is provided that the longitudinal axes of the battery cells of a respective battery module are arranged essentially parallel to the stacking direction of the battery modules.

If the longitudinal axes of the battery cells of a respective battery module are arranged essentially parallel to the stacking direction of the battery modules, an outer contour of the frame elements of the battery modules can preferably be optimally adapted to an available installation space, for example in a vehicle.

In particular, an available installation space, for example in a vehicle, can be optimally used.

It can be favorable here if a degree of filling of a receiving space of the battery modules of the battery device can be increased by arranging the longitudinal axes of the battery cells parallel to the stacking direction of the battery modules.

In the context of this description and the appended claims, a degree of filling of a receiving space of the respective battery modules is understood to mean, in particular, a ratio of the displacement volume displaced by the battery cells which are arranged in the receiving space to a total volume of the receiving space.

An energy storage capacity of the battery modules and in particular of the battery device can preferably be increased by increasing the degree of filling.

In one embodiment of the battery device, it is provided that the battery cells are round cells.

The battery cells are preferably circular-cylindrical battery cells, in particular circular-cylindrical round cells.

The battery cells are preferably designed to be at least approximately rotationally symmetrical to a longitudinal axis thereof.

Alternatively, it is conceivable that the battery cells are prismatic cells.

Preferably, the filling level of a receiving space of a respective battery module can be increased by using round cells.

A receiving space of a battery module can preferably be optimally utilized by using round cells. In particular, a receiving space of a battery module can be filled at least approximately completely by using round cells.

In one embodiment of the battery device it is provided that the battery device comprises two end bodies, the battery modules of the battery device preferably being arranged between the two end bodies.

For example, it is conceivable that the two end bodies comprise or are formed from a metallic material, in particular steel or aluminum.

In one embodiment of the battery device it is provided that the two end bodies comprise fastening elements, by means of which the battery device can be fixed to a supporting structure, for example to a supporting structure of a vehicle.

As an alternative or in addition to this, it is conceivable that the battery modules each comprise individual or several further fastening elements, by means of which the battery device can be fixed to a supporting structure.

For example, only the two end bodies comprise fastening elements by means of which the battery device can be fastened to a supporting structure.

It can therefore be favorable if the battery device can only be fixed to a supporting structure by means of the end bodies.

In one embodiment of the battery device, it is provided that the battery modules of the battery device are braced or can be braced with one another.

In particular, it is conceivable that the battery modules of the battery device are clamped or can be clamped between the two end bodies.

It can be particularly favorable if, by tensioning the battery modules, essentially no force is exerted on the battery cells of the battery modules, in particular parallel to the stacking direction and / or parallel to a longitudinal axis of the battery cells of a respective battery module.

For example, it can be provided that the battery modules of the battery device are clamped or can be clamped between the two end bodies by means of one or more clamping elements.

In particular, it is conceivable that the tensioning elements are so-called tie rods.

It can be favorable if the tensioning elements comprise a metallic material or are formed from this, for example from steel or aluminum.

The tensioning elements preferably comprise steel or are formed from it.

Tie rods designed as tensioning elements each include, in particular, a metallic rod which has a thread. To clamp the battery modules, the rod can preferably be arranged parallel to the stacking direction. The battery modules can preferably be clamped together, in particular between the two end bodies, by means of one or more screw elements that can be screwed onto the rod.

For example, it is conceivable that the battery modules are tensioned in the stacking direction with a tension force which corresponds to a tension of at most approximately 30%, for example at most approximately 50%, an upper yield point of a material of the tensioning elements.

In one embodiment of the battery device, it is provided that a respective battery module comprises a sealing element.

The sealing element of a battery module is preferably an annular sealing element.

It can be favorable if the sealing element comprises or is formed from a plastic material.

The sealing element of a respective battery module is received or can be received, for example, in a receiving groove in the battery module.

For example, it is conceivable that the receiving groove for receiving the sealing element is arranged and / or formed in an end face of the frame element of a respective battery module that is arranged perpendicular to the stacking direction.

It can be favorable if a sealing element of a respective battery module is compressed by tensioning the battery modules of the battery device between two adjacent battery modules, in particular between a frame element and a base element of two adjacent battery modules.

A sealing effect according to protection class IP 6K9K can be achieved, for example, by means of a sealing element of a respective battery module.

In one embodiment of the battery device, it is provided that the battery cells of a respective battery module are fixed to the base element of the battery module.

The battery cells and the base element are preferably not in direct material contact.

The battery cells, in particular cell bottoms of the battery cells, are preferably at a distance from the base element, for example in the range from approximately 0.2 mm to approximately 1.5 mm, preferably in the range from approximately 0.3 mm to approximately 1 mm.

The battery cells of a respective battery module are preferably thermally coupled directly and / or indirectly to the base element of the battery module and / or are electrically insulated from the base element.

It can be favorable if the battery cells of a respective battery module are thermally coupled to the base element by means of a heat-conducting paste and / or by means of a potting compound and / or are electrically insulated from it.

In particular, it can be provided that the battery cells of a respective battery module are materially connected to the base element of the battery module by means of potting compound.

The battery cells of a respective battery module are preferably arranged at a distance from the base element by means of potting compound and are connected to the base element by means of the potting compound, for example at a distance in the range of about 0.2 mm to about 1.5 mm, preferably in the range of about 0.3 mm to about 1 mm.

For example, it is conceivable that the battery cells of a respective battery module are completely embedded in the potting compound.

As an alternative to this, it is for example conceivable that at least approximately 30%, for example at least approximately 50%, of a respective battery cell based on a length thereof measured parallel to a longitudinal axis of the battery cell is embedded in potting compound.

The potting compound includes, for example, polyurethane, silicone and / or an epoxy resin.

For example, it is conceivable that the potting compound is a one-component material, a two-component material or a multi-component material.

It can be advantageous, for example, if the casting compound is a two-component material with a hardener, in particular a crosslinking agent.

It can be particularly favorable if the casting compound is designed to be heat-curing and / or moisture-curing.

It can be favorable if the battery cells of a respective battery module are each embedded in a first potting compound and in a second potting compound.

In particular, it is conceivable that the battery cells are cohesively connected to the base element of a respective battery module by means of a first potting compound. Preferably at most about 50%, for example at most about 40%, in particular at most about 30% of a respective battery cell based on a length thereof measured parallel to a longitudinal axis of the battery cell is embedded in the first potting compound.

The battery cells are preferably also embedded in a second potting compound, by means of which a receiving space of a respective battery module is at least partially filled. For example, the receiving space of a respective battery module is filled with foam with the second potting compound.

It can be favorable if the first potting compound has a higher strength than the second potting compound.

In particular, it is conceivable that the first potting compound has a higher density than the second potting compound.

Furthermore, it is particularly conceivable that the second potting compound has a lower thermal conductivity than the first potting compound.

The second potting compound is, for example, a foam material.

If the battery cells of a respective battery module are thermally coupled directly to the base element, the battery module has, for example, the following sequence in the stacking direction: base element, electrical insulation film, thermal paste, battery cell. It can be particularly advantageous if there is no distance between the individual layers and / or elements.

If the battery cells of a respective battery module are indirectly thermally coupled to the base element, the battery cells of the battery module are, for example, directly thermally coupled to a potting compound. Preferably, the potting compound is in turn directly thermally coupled to the base element of the battery module. It can be advantageous if the battery cells are arranged at a distance from the base element.

It can be favorable if the battery cells in a direction running parallel to the stacking direction of the battery device are at a distance from the base element in the range from approximately 0.2 mm to approximately 1.5 mm, preferably in the range from approximately 0.3 mm to approximately 1 mm.

In one embodiment of the battery device, it is provided that the frame element of a respective battery module comprises or forms a temperature control device.

It can be favorable if the temperature control device is designed for active temperature control and / or for passive temperature control.

In the context of this description and the attached claims, active temperature control is understood to mean, in particular, temperature control whose effect is essentially based on convection, in particular on forced convection. Active temperature control is preferably implemented by means of a temperature control fluid flowing through external mechanical action, in particular by means of a temperature control liquid flowing through external mechanical action.

Active temperature control takes place, for example, through liquid cooling.

In the context of this description and the appended claims, passive temperature control is understood to mean, in particular, temperature control whose effect is essentially based on heat conduction.

It can be favorable, for example, if the frame element comprises a temperature control channel through which a temperature control medium can flow.

A temperature control channel of the frame element is arranged or formed in particular in a wall, for example in a double wall, of the frame element.

As an alternative or in addition to this, it is conceivable that the temperature control device comprises one or more heat conducting elements, in particular one or more cooling ribs.

One or more heat conducting elements of the temperature control device are preferably arranged on an outer surface of the frame element.

For example, it is conceivable that heat conducting elements designed as cooling ribs are arranged essentially parallel to the stacking direction.

Demolding of the frame element can preferably be facilitated by cooling ribs running parallel to the stacking direction.

An outer surface of the frame element can preferably be enlarged by means of the heat conducting elements, in particular by means of the cooling ribs.

If the frame element comprises or is formed from a metallic material, it can be provided that the temperature control device comprises one or more heat-conducting elements, in particular cooling fins.

It can furthermore be favorable if the temperature control device comprises, in addition to one or more heat-conducting elements, a fan, by means of which the heat-conducting elements can be blown on from the same in order to dissipate heat.

As an alternative or in addition to this, it is conceivable that the heat-conducting elements can be blown on to dissipate heat therefrom by the airstream when a vehicle is moving.

In one embodiment of the battery device, it is provided that individual, multiple or all battery modules of the battery device each include a degassing element for degassing a receiving space of the respective battery module.

It can be favorable if a degassing element of a battery module is arranged on the frame element of the battery module.

For example, it is conceivable that a degassing element comprises or is formed by a bursting element and / or a pressure compensation element.

If all the battery modules of the battery device each include one or more degassing elements, a particularly short degassing path can preferably be implemented so that hot gases can be conducted as directly as possible into the surroundings of the battery device.

Propagation of a thermal runaway from battery cells of a battery module to other battery cells of the same battery module and / or to battery cells of adjacent battery modules can preferably be prevented.

In one embodiment of the battery device, it is provided that all battery modules of the battery device or more than 50% of the battery modules of the battery device are designed identically, preferably more than 80% of the battery modules.

For example, it is conceivable that, apart from one battery module, all the battery modules of the battery device are of identical design.

In particular, all frame elements of the battery modules of the battery device are of identical design.

In one embodiment of the battery device it is provided that a respective battery module comprises a propagation protection element.

By providing a propagation protection element, the propagation of a thermal runaway from battery cells of one battery module to battery cells of an adjacent battery module can preferably be prevented.

It can be favorable if a propagation protection element of a respective battery module comprises or is formed from a heat-resistant and / or thermally insulating material, for example rock wool fleece and / or glass fiber fleece.

For example, it is conceivable that a propagation protection element of a battery module is connected, for example glued, to the base element of the respective battery module.

It can be beneficial, for example, if a propagation protection element of a battery module is arranged on a side of the base element facing away from the receiving space of the battery module.

It is particularly conceivable that the propagation protection element of a battery module delimits the receiving space of an adjacent battery module.

In one embodiment of the battery device, it is provided that the battery device comprises one or more temperature control elements, which are each arranged between two adjacent battery modules.

It can be favorable, for example, if the one or more temperature control elements, which are each arranged between two adjacent battery modules, comprise electrical resistance heating elements or are formed by them.

A temperature control element which comprises or is formed by an electrical resistance heating element preferably forms a propagation protection element. It can be particularly favorable if a temperature control element, which comprises an electrical resistance heating element or is formed by this, comprises a heat-resistant material.

Alternatively or in addition to this, it is conceivable that the one or more temperature control elements, which are each arranged between two adjacent battery modules, comprise one or more temperature control channels through which a temperature control medium, for example a cooling or heating liquid, can be conducted.

It can be favorable, for example, if the one or more temperature control elements, which are each arranged between two adjacent battery modules, are produced by means of a roll-bond process.

It is conceivable that a temperature gradient is established from a “core” of a battery module to the frame element of the battery module. In particular, it is conceivable that battery cells in the core of the battery module have a higher temperature than battery cells in an edge region of the battery module which is delimited by the frame element of the battery module.

A maximum possible charging current is limited by a temperature gradient in the battery module and / or by temperature differences between the battery cells of a battery module. Battery cells of the battery module heat up, for example, first in the core of the battery module and only then in an edge region of the battery module.

For example, it is conceivable that battery cells in different sections arranged one inside the other, starting from a core of the battery module, each have an at least approximately identical temperature, which increases from the core of the battery module to an edge region of the battery module.

It can therefore be favorable if the one or more temperature control elements, which are each arranged between two adjacent battery modules, each comprise two or more than two temperature control zones in which mutually different temperatures can be set.

For example, it is conceivable that the one or more temperature control elements, which are each arranged between two adjacent battery modules, comprise a radially inner temperature control zone and one the radially outer temperature control zone, which surrounds the radially inner temperature control zone, with the one or more temperature control elements in the radially outer tempering zone have a higher area-related heating output than in the radially inner tempering zone.

The one or more temperature control elements preferably have a cross section taken perpendicular to a stacking direction of the battery device, which essentially corresponds to a cross section of a receiving space of the battery modules of the battery device taken perpendicular to the stacking direction of the battery device.

As an alternative or in addition to this, it is conceivable that each individual battery cell of a battery module is assigned an individual temperature control element.

It can also be favorable if a group of battery cells of a battery module, in particular a group of battery cells arranged in certain sections, is assigned a respective temperature control element.

Temperature control elements are, for example, heating foils and comprise one or more resistance heating elements.

Preferably, by providing a temperature control element with several temperature control zones or by providing several temperature control elements, selective heating of individual battery cells, in particular individual groups of battery cells, can be made possible. Preferably are there Temperatures of the battery cells of a battery module are comparable.

By equalizing the temperatures of the battery cells of a battery module, a higher maximum charging current and thus in particular a shortening of the charging time can preferably be achieved.

In particular, a more uniform discharge of the battery cells of a battery module can also be achieved.

In one embodiment of the battery device, it is provided that the frame element and / or the base element are made in particular in one piece from a metallic material, for example aluminum.

In particular, it is conceivable that the frame element and / or the floor element are made from a metallic material with a high thermal conductivity, for example from a metallic material with a thermal conductivity of at least approximately 130 W / m * K, preferably of at least approximately 160 W / m * K.

It can be advantageous, for example, if the frame element and the floor element are a one-piece aluminum die-cast part.

As an alternative to this, it is conceivable that in each case a floor element is materially connected to a frame element, in particular welded, for example by means of friction stir welding.

A thermal and / or mechanical coupling of the floor element and the frame element can preferably be implemented by materially connecting the floor element and the frame element.

In particular, a metallic heat conduction from the floor element into the frame element can be realized.

If the frame element is made of a metallic material, it can be provided that the frame element comprises one or more heat conducting elements, in particular one or more cooling ribs, which are arranged in particular on an outer surface of the frame element.

A ratio of an outer surface of the frame element to an inner surface of the frame element is preferably at least approximately 1.3: 1, preferably at least approximately 1.5: 1.

In one embodiment of the battery device, it is provided that the frame element is made from a plastic material and / or that the base element is made from a metallic material.

If the frame element is made of a plastic material, the frame element is preferably injection molded.

It can be particularly favorable if the frame element is a plastic injection-molded component.

By means of a metallic base element, heat can preferably be conducted away from the battery cells of a battery module.

The base elements of the battery modules are preferably aluminum plates.

It can be favorable if the base elements of the battery modules comprise or are formed from an aluminum alloy with a thermal conductivity of at least approximately 130 W / m * K, preferably of at least approximately 160 W / m * K.

The base elements of the battery modules preferably comprise AlMgSi0.5 or are formed from it.

It can be particularly favorable if the base elements have an average material thickness in the range of approximately 2 mm to approximately 6 mm, for example approximately 4 mm, parallel to a stacking direction of the battery device.

Preferably, the vibration resistance of the battery modules of the battery device can be increased. In particular, temperatures of the battery cells of a respective battery module can be compared.

In one embodiment of the battery device it is provided that a respective battery module comprises electrical contacting elements, by means of which two adjacent battery modules can be connected to one another by stacking the battery modules in series along the stacking direction.

A respective battery module preferably comprises a first contacting element and a second contacting element, the first and the second contacting element being arranged in the stacking direction on sides of the battery module facing away from one another.

It can be particularly advantageous if the first contacting element and the second contacting element of a respective battery module are arranged such that the first contacting element of a first battery module of two adjacent battery modules and the second contacting element of a second battery module of the two adjacent battery modules are in electrically conductive contact with one another.

In one embodiment of the battery device it is provided that a respective battery module comprises one or more spacer elements, by means of which the base elements of the battery modules are or can be arranged essentially parallel to one another.

The spacer elements preferably comprise or are formed from a metallic material.

It can be favorable, for example, if a spacer element of a respective battery module is formed by the frame element of the battery module, in particular if the frame element is made from a metallic material.

As an alternative to this, it is possible for a respective battery module to comprise several, preferably at least three, spacer elements which are inserted into a frame element of the battery module.

In one embodiment of the battery device, it is provided that a respective battery module comprises a detection device for detecting the cell voltages of the battery cells of the battery module and / or for detecting the temperatures of the battery cells of the battery module and / or that a respective battery module comprises a balancer for balancing the battery cells of the battery module .

It can be favorable if the frame element of a respective battery module comprises or is formed from a plastic material.

Preferably, frame elements which comprise or are formed from a plastic material can reduce the overall mass of the battery device and / or the production costs of the battery device.

In one embodiment of the battery device, it is provided that the frame element is an injection-molded component, in particular a plastic injection-molded component.

The frame element is preferably a one-piece plastic injection-molded component.

In one embodiment of the battery device, it is provided that the frame element comprises a double wall, in particular an annularly closed double wall.

For example, it is conceivable that the frame element and / or the floor element are made of a metallic material, for example aluminum.

The frame element is made, for example, by die-casting aluminum.

The double wall preferably comprises an inner wall element and an outer wall element.

The inner wall element and / or the outer wall element are preferably designed to be closed in an annular manner.

By providing the outer wall element and / or the inner wall element, a closed casing for the battery cells of a respective battery module can be provided even if the outer wall element fails, for example in the event of a crash.

For example, it is conceivable that the inner wall element and / or the outer wall element are arranged essentially parallel to one another.

Wall sections of the inner wall element and the outer wall element lying opposite one another are connected to one another in particular by means of one or more connecting webs.

It can be favorable if the connecting webs run parallel to a stacking direction of the battery device.

The inner wall element and the outer wall element are preferably connected to one another by means of several connecting webs.

The connecting webs are arranged, for example, at regular intervals from one another.

• Brandschutz durch Benetzung des Außenwandungselements und/oder des Innenwandungselements mit Temperiermedium, verbesserter Propagationsschutz, Erhöhung der elektromagnetischen Verträglichkeit (EMV); verbesserte mechanische Festigkeit; Temperierung der Batteriezellen eines Batteriemoduls.

By providing a double wall through which a temperature control medium can flow, the following advantages can preferably be achieved:

• Fire protection through wetting of the outer wall element and / or the inner wall element with temperature control medium, improved propagation protection, increase in electromagnetic compatibility (EMC); improved mechanical strength; Temperature control of the battery cells of a battery module.

By wetting the outer wall element and / or the inner wall element with temperature control medium, burning off or melting of the frame element can preferably be made more difficult, delayed and / or prevented.

For example, electromagnetic compatibility can be increased by flowing an electrically conductive temperature control medium through a double wall of a frame element of a respective battery module.

To increase the electromagnetic compatibility, it can also be provided that the frame element of a respective battery module is coated, in particular vapor-deposited, with a metallic material.

In particular, an outer surface and / or an inner surface of the frame element can be coated, in particular vapor-deposited, with a metallic material.

It can be favorable if the temperature control space of a battery module is delimited in the stacking direction by the base element of the battery module and by a base element of an adjacent battery module.

The base element of a battery module preferably comprises one or more passage openings which open into the temperature control space of a battery module.

In one embodiment of the battery device it is provided that the double wall of the frame element can be flown through with a temperature control medium, in particular parallel to a stacking direction of the battery device.

In one embodiment of the battery device, it is provided that the double wall of the frame element delimits a temperature control space of the respective battery module, preferably at least on two sides.

The temperature control space is preferably closed in a ring.

The temperature control space of a respective battery module preferably has a temperature control space contour in a cross section taken perpendicular to a stacking direction of the battery device.

It can be beneficial if the temperature control space is partially delimited by the base element of a respective battery module.

In particular, it can be provided that the temperature control space is delimited on both sides by the double wall of the frame element. Preferably, the temperature control space is also delimited by the base element of a respective battery module on a first side of the frame element in the stacking direction. It can also be favorable if the temperature control space is delimited by a base element of an adjacent battery module on a side of the frame element which is second in the stacking direction and which faces away from the first side of the frame element.

It can be particularly favorable if the temperature control space is delimited, with the exception of passage openings, by the base element of a respective battery module and by a base element of an adjacent battery module.

In one embodiment of the battery device, it is provided that the frame element comprises a frame element base body which is constructed in several parts.

It can also be favorable if a base element of a respective battery module is constructed in several parts.

A frame element base body comprises in particular a plurality of frame element base body parts.

The frame element base body parts are preferably aluminum die-cast parts.

It can be favorable if a frame element base body comprises a receiving groove for receiving a sealing element on its end faces arranged perpendicular to a stacking direction of the battery device.

For example, it is conceivable that a frame element base body comprises two receiving grooves for receiving a sealing element on its end faces arranged perpendicular to a stacking direction of the battery device, the two receiving grooves arranged on a respective end face being in particular arranged essentially parallel to one another.

In one embodiment of the battery device it is provided that the frame element base body parts of a frame element base body are positively connected or connectable to one another.

The frame element base body parts preferably each comprise one or more form-fitting elements, by means of which the frame element base body parts can be connected to one another in a form-fitting manner.

It can be favorable if the frame element base body parts can be connected to one another in the manner of a puzzle.

The frame element base body parts can be connected to one another in particular butt.

A frame element base body part preferably comprises two or more than two form-fit elements.

The frame element base body parts can in particular be connected to one another in a direction running parallel to a stacking direction of the battery device.

It can be favorable if the frame element base body parts can be positively connected to one another by means of a tongue and groove connection, for example by means of a dovetail connection.

For example, it is conceivable that form-locking elements that can be connected to one another are designed as a connecting groove and as a connecting rib.

It can be favorable if a connecting groove and / or a connecting rib are arranged parallel to a stacking direction of the battery device and / or extend parallel to the stacking direction of the battery device.

In a cross-section taken perpendicular to a stacking direction, the connecting groove and / or the connecting rib are preferably formed substantially complementary to one another.

It can be favorable, for example, if the connecting groove and / or the connecting rib have a trapezoidal cross-section perpendicular to a stacking direction of the battery device, in particular in the form of an isosceles trapezoid.

The frame element base body parts are in particular corner parts and / or side parts of a frame element base body.

For example, it is conceivable that a frame element base body comprises several, for example four, corner parts and / or that a frame element base body comprises several side parts, with one or more side parts being or can be arranged between two corner parts.

A frame element base body part embodied as a corner part preferably comprises two connecting ribs, wherein a frame element base body part embodied as a side part includes one or two connecting grooves.

It can be favorable if the form-locking elements of the frame element base body parts are each arranged on a connecting web of a frame element base body part or are formed on this.

It can also be favorable if a frame element base body part of the frame element base body comprises one or more temperature control chambers.

In one embodiment of the battery device, it is provided that the base element of a respective battery module comprises one or more passage openings which in particular open into a temperature control space of the battery module.

It can be favorable if the temperature control spaces of adjacent battery modules are fluidically connected to one another, in particular by means of the passage openings of the base element.

For example, it is conceivable that the passage openings are circular.

In order to be able to improve the dissipation of heat from a base element of a battery module into a temperature control medium flowing through the temperature control space, it can be provided that the passage openings have an opening cross section in which the ratio of the surface of a wall of a respective passage opening to the opening cross section thereof is as large as possible .

For example, it is conceivable that the passage openings have a square or a star-shaped cross section.

The base element of a respective battery module preferably comprises a plurality of passage openings which are arranged essentially along a line.

The passage openings are preferably arranged at regular intervals from one another along the line.

It can be particularly favorable if the passage openings of the base element are arranged along a line which runs along a temperature control space contour of the temperature control space of a respective battery module.

A sealing section of a sealing element is preferably arranged radially within a line along which the passage openings are arranged and radially outside the line along which the passage openings are arranged.

The sealing sections of the sealing element are preferably closed in the shape of a ring and in particular run essentially parallel to the line along which the passage openings are arranged.

It can be beneficial if the passage openings which open into the temperature control space of a battery module form temperature control medium inlets and / or temperature control medium outlets by means of which temperature control medium can be introduced into and / or out of a temperature control space of a battery module.

In one embodiment of the battery device it is provided that a respective battery module comprises two sealing elements, a first sealing element being arranged between the frame element and the bottom element of the battery module and / or a second sealing element being arranged between the frame element and a bottom element of an adjacent battery module.

It can be favorable if the sealing elements are injection molded onto the base element and / or onto the frame element of a respective battery module.

It can also be advantageous if a sealing element is injection-molded onto the frame element when the frame element is being produced.

As an alternative or in addition to this, it is possible for one or more sealing elements to be injection-molded onto the base element when a retaining body is molded onto the latter.

For example, it is conceivable that a sealing element is injection-molded onto the base element on each side of the base element facing away from one another.

Furthermore, it is conceivable that a sealing element is produced independently of the frame element and / or independently of a holding body. A sealing element produced independently of the frame element and / or independently of the holding body is preferably inserted into sealing element receiving grooves in the frame element.

A sealing element preferably comprises a first sealing section and a second sealing section.

The first sealing section and / or the second sealing section are preferably closed in an annular manner.

The first sealing section and the second sealing section of the sealing element preferably each include a sealing lip.

It can be favorable if the first sealing section and the second sealing section are connected to one another, for example by means of one or more web elements.

The sealing elements are preferably designed in one piece.

As an alternative to this, it is conceivable that the sealing elements are designed in several parts and the first sealing section and the second sealing section are not connected to one another.

In one embodiment of the battery device it is provided that a respective battery module comprises one or more spacer elements, by means of which the base elements of the battery modules are or can be arranged essentially parallel to one another.

It can be favorable if the one or more spacer elements of a battery module are designed to be pressure-stable.

The one or more spacer elements of a battery module in particular have a higher pressure stability than the frame element of the battery module.

The spacer elements preferably comprise or are formed from a metallic material.

For example, it is conceivable that a respective battery module comprises several, preferably at least three, spacer elements which are inserted into the frame element of the battery module.

For example, it is also conceivable that the frame element of a respective battery module comprises one or more receptacles, with a spacer element preferably being arranged in each receptacle.

The spacer elements are preferably essentially cylindrical.

It can be favorable if the spacer elements of a respective battery module are arranged outside the double wall of the frame element of the battery module in a direction running perpendicular to a stacking direction of the battery module.

Spacer elements of two adjacent battery modules are preferably aligned in a stacking direction of the battery device.

In one embodiment of the battery device it is provided that the one or more spacer elements of a respective battery module each comprise two contact surfaces arranged on opposite sides of the spacer element, wherein a respective spacer element rests with a first contact surface on the base element of the battery module and wherein the spacer element with a second contact surface rests on the base element of an adjacent battery module or can be applied to this.

In this case, an introduction of force from the spacer elements into the floor elements can preferably be implemented.

In particular, a compressive force can be transmitted from the spacer elements to floor elements resting on the contact surfaces of the spacer elements.

In one embodiment of the battery device it is provided that the two contact surfaces of a spacer element of a respective battery module are spaced apart from one another which essentially corresponds to a height of a wall, in particular a double wall, of the battery module taken parallel to the stacking direction.

Preferably, the frame elements of the battery modules, which comprise or are formed from a plastic material, can be prevented from being compressed due to a tension force acting on the battery modules parallel to a stacking direction of the battery device.

In one embodiment of the battery device, it is provided that the spacer elements of a respective battery module are bolt elements or sleeve elements.

For example, it is conceivable that the spacer elements of a respective battery module are designed to be essentially circular or annular in a cross section taken perpendicular to a stacking direction of the battery module.

Spacer elements designed as sleeve elements are preferably designed as hollow cylinders.

It can be favorable if the spacer elements are designed to be rotationally symmetrical to a longitudinal axis thereof.

For example, it is conceivable that the spacer elements comprise a spacer section in which the spacer elements are in particular cylindrical, for example circular cylindrical.

It can furthermore be favorable if the spacer elements further comprise an insertion section in which the spacer elements are in particular cylindrical, for example circular-cylindrical.

An insertion section of a spacer element can preferably be inserted into a spacer section of a spacer element adjacent in a stacking direction of the battery device.

In one embodiment of the battery device, it is provided that the battery modules of the battery device are clamped to one another by means of the spacer elements or that the battery modules of the battery device are clamped by means of clamping elements guided through the spacer elements.

For example, it is conceivable that the spacer elements each comprise screw elements, spacer elements that are adjacent in a stacking direction of the battery device being screwable to one another by means of the screw elements.

For example, it is conceivable that an insertion section of a spacer element comprises an external thread and / or that a spacer section of a spacer element comprises an internal thread.

As an alternative to this, it is conceivable that tensioning elements of the battery device are passed through spacer elements designed as sleeve elements.

It can be favorable if the battery modules of the battery device are clamped or can be clamped between two end bodies by means of one or more clamping elements.

The battery modules of the battery device are preferably pressed together before they are braced, in particular in a stacking direction of the battery device.

It can be advantageous if the sealing elements of the battery modules are pressed Battery modules are deformed, in particular compressed, between a frame element and a floor element.

In one embodiment of the battery device, it is provided that the frame element of a respective battery module comprises one or more stack projections projecting away from the frame element parallel to a stacking direction of the battery device and / or one or more stack recesses in which stack projections of a frame element of an adjacent battery module can be received.

Stacking of the battery modules of the battery device can preferably be facilitated by means of the stacking projections and / or by means of the stacking recesses.

The stacking projections and the stacking recesses of the frame element of a respective battery module are preferably arranged on sides of the frame element facing away from one another.

In particular, it can be provided that all stacking projections of the frame element of a respective battery module are arranged on a first side of the frame element and that all stacking recesses are arranged on a second side of the frame element which faces away from the first side.

In one embodiment of the battery device, it is provided that the frame element of a respective battery module is connected or can be connected to the base element of the battery module in a non-positive and / or form-fitting manner, for example clipped.

The frame element of a respective battery module preferably comprises one or more latching projections.

It can be favorable here if the base element of a respective battery module comprises one or more latching recesses into which the latching projections of the frame element can be inserted.

The one or more latching projections of a frame element of a respective battery module preferably each comprise two latching elements.

In particular, it is conceivable that a latching element of a latching projection comprises a latching hook.

The latching hooks of the two latching elements of a latching projection preferably engage behind the base element of a respective battery module when the frame element is connected to the base element in a non-positive and / or form-fitting manner, in particular is clipped.

In one embodiment of the battery device it is provided that the frame element of a respective battery module comprises a stiffening structure on a circumferential surface of the frame element, for example a stiffening rib structure.

Preferably, a stiffness of an injection-molded frame element can be increased by means of the stiffening structure.

In particular, it is conceivable that a stiffening rib structure of the frame element comprises a plurality of rib elements.

In one embodiment of the battery device, it is provided that individual or several, in particular all, battery modules of the battery device are of identical design.

It can be particularly advantageous if the frame elements and / or the base elements of all battery modules of the battery device are of identical design.

It can be favorable if the base element of a respective battery module comprises a metallic material or is formed from this and forms part of an outer surface of the battery device.

It can be particularly favorable if the base element forms an annularly closed part of an outer surface of the battery device.

Preferably, heat can be dissipated to the outer surface of the battery device by means of the base element of a respective battery module.

In this case, passive temperature control of the battery device can preferably be implemented by means of the base elements.

In the context of this description and the appended claims, passive temperature control is understood to mean, in particular, temperature control which is essentially based on heat conduction.

The base elements of the battery modules in particular each form ring-shaped closed surface sections of an outer surface of the battery device.

The ring-shaped closed surface sections formed by the base elements of the battery modules are preferably separated from one another in the stacking direction by the frame elements of the battery modules.

Preferably, because the base element of a respective battery module forms part of an outer surface of the battery device, heat can be dissipated to an outer surface of the battery device by means of the base element.

An outer surface is preferably formed perpendicular to a stacking direction of the battery device by ring-shaped closed surface sections formed by the base elements of the battery modules and by the frame elements of the battery modules.

The floor element preferably has a thermal conductivity of at least approximately 100 W / m * K, for example of at least approximately 150 W / m * K.

It can be favorable, for example, if the floor element has a thermal conductivity of approximately 186 W / m * K.

The floor element comprises in particular aluminum or is formed from it, for example AlMgSi0.5.

The battery modules of the battery device are preferably arranged or can be arranged along a stacking direction.

In particular, it is conceivable that the base element of a respective battery module forms part of the outer surface of the battery module in a direction running perpendicular to the stacking direction.

In one embodiment of the battery device, it is provided that the base elements of the battery modules protrude over the frame elements of the battery modules at least in sections, for example closed in a ring, perpendicular to a stacking direction of the battery device.

In one embodiment of the battery device, it is provided that the battery device comprises a heat sink and / or a temperature control element which are thermally coupled to individual or multiple, preferably to all, base elements of the battery device.

The heat sink and / or the temperature control element are preferably arranged on the outer surface of the battery device.

The heat sink preferably comprises one or more cooling fins.

It can be favorable if the heat sink is in direct material contact with one or more, preferably with all, bottom elements of the battery device, in particular on the part of the outer surface of the battery device which is formed by the respective bottom elements of the battery modules.

In one embodiment of the battery device, it is provided that a respective battery module further comprises a holding body for holding the battery cells of the respective battery module, which is connected to the base element of the battery module, in particular in a materially bonded manner.

In one embodiment of the battery device, it is provided that the holding body of a respective battery module comprises a plurality of receiving openings, in each of which a battery cell of the battery module is received.

For example, it is conceivable that the holding body of a respective battery module comprises approximately 200 to approximately 600 receiving openings, for example approximately 400 receiving openings.

In one embodiment of the battery device, it is provided that the holding body of a respective battery module comprises a honeycomb structure or is formed by a honeycomb structure.

It can be favorable if a honeycomb structure of the holding body comprises several, in particular polygonal, holding elements which delimit the receiving openings.

The holding elements are, for example, regular hexagons.

For example, it is conceivable that the holding elements are each arranged adjacent to a plurality of further holding elements.

In particular, it is conceivable that holding elements of the honeycomb structure are each arranged adjacent to six further holding elements.

A receiving opening of a holding element is preferably delimited by several holding element webs, for example by six holding element webs each.

It can be favorable if several holding element webs of adjacent holding elements are connected to one another at a node.

For example, it can be favorable if three holding elements of three adjacent holding elements are connected to one another at the node.

In one embodiment of the battery device, it is provided that the holding body of a respective battery module is molded onto the base element of the battery module.

The holding body preferably comprises connection areas which are arranged at a plurality of nodes and at which the holding body is connected to the base element, for example in a materially bonded manner.

It can be advantageous, for example, if the holding body is injection molded onto the base element at the connection areas.

It can be beneficial, for example, if a connection area is arranged at approximately 50% of the nodes of the holding body.

In one embodiment of the battery device it is provided that the holding body is formed in one piece.

The holding body is preferably an injection-molded component, in particular a one-piece injection-molded component.

The holding body preferably comprises or is formed from a plastic material.

In one embodiment of the battery device, it is provided that a respective battery module further comprises a sealing element, in particular two sealing elements, which are connected to the base element of the battery module, in particular in a materially bonded manner.

It can be favorable if the sealing element, in particular the two sealing elements, are injection molded onto the base element.

It can be advantageous if the sealing element, in particular the two sealing elements, are each designed to be closed in an annular manner.

A sealing contour of the sealing element preferably corresponds to a contour of the frame element of a respective battery module, in particular in a cross section taken perpendicular to a stacking direction of the battery module.

In one embodiment of the battery device it is provided that the two sealing elements are arranged on two opposite sides of the base element of a respective battery module, in particular injection molded onto the base element.

In one embodiment of the battery device, it is provided that the sealing element comprises a first sealing section and a second sealing section.

A first sealing section and second sealing section are preferably each designed to be closed in an annular manner.

It can be favorable if the first sealing section and the second sealing section of the sealing element are arranged essentially parallel to one another.

In one embodiment of the battery device, it is provided that the battery cells of a respective battery module are thermally coupled to the base element of the battery module.

It can be beneficial, for example, if the battery cells of a respective battery module are thermally coupled to the base element of the battery module by means of a heat-conducting paste and / or by means of a potting compound.

In one embodiment of the battery device, it is provided that the base element of a respective battery module comprises one or more temperature control channels, for example a temperature control channel structure.

A temperature control channel, in particular a temperature control channel structure, of the base element can preferably be flowed through by means of a temperature control medium.

For example, it is conceivable that the base element of a respective battery module has a multi-layer design and delimits a temperature control channel, in particular a temperature control channel structure.

A temperature control channel, in particular a temperature control channel structure, of the base element of a respective battery module is produced, for example, by means of roll bonding.

It can be advantageous if, by providing a temperature control channel in the base element of a respective battery module, active temperature control of the battery device can be implemented by means of the base element.

In one embodiment of the battery device, it is provided that the base element of a respective battery module is a hybrid component, in particular a metal-elastomer hybrid component.

The present invention is based on the further object of providing a method for fixing battery cells by means of which a Battery device is easy and inexpensive to manufacture.

This object is achieved by a method for fixing battery cells in accordance with the independent method claim.

The method according to the invention for fixing battery cells preferably has one or more of the features and / or advantages described in connection with the battery device according to the invention.

• - Bereitstellen eines Lagenelements;
• - Bereitstellen mehrerer Batteriezellen;
• - Fixieren der Batteriezellen in dem Lagenelement durch insbesondere plastisches Verformen des Lagenelements.

The method for fixing battery cells preferably comprises the following:

• - providing a layer element;
• - Provision of several battery cells;
• - Fixing the battery cells in the layer element by, in particular, plastic deformation of the layer element.

It can be favorable if the layer element, which is particularly plastically deformed, forms a holding body of a battery module.

The layer element is preferably a thermoformable layer element.

The battery cells are in particular round cells.

The layer element preferably comprises or is formed from a plastic material.

It can be advantageous, for example, if the layer element comprises or is formed from a polyolefin, for example polyethylene (PE) or polypropylene (PP).

The layer element preferably comprises a low-density polyethylene (LDPE).

The layer element is in particular a shrink film.

It can be favorable if the layer element comprises an electrically insulating material or is formed from this.

It is also conceivable, for example, that the layer element comprises polymethyl methacrylate (PMMA) or polycarbonate (PC) or is formed therefrom.

In one embodiment of the method, it is provided that the battery cells are fixed in the layer element by heating the layer element and / or by subsequently cooling the layer element.

It can be favorable if, after the battery cells have been fixed in the layer element, the layer element rests on a jacket surface and / or on a base surface of a respective battery cell.

In particular, it can be provided that the layer element rests against a lateral surface of a respective battery cell by at most approximately 50%.

The layer element is preferably at least approximately 10%, for example at least approximately 20%, preferably at least approximately 30%, against a jacket surface of a respective battery cell.

It can also be favorable if the layer element rests completely against an entire base area of a respective battery cell.

After the battery cells have been fixed, the layer element is preferably in the shape of a pot on the battery cells.

In one embodiment of the method it is provided that the layer element is plastically deformed by heating or that the layer element is heated and the heated layer element is then plastically deformed.

For example, it is conceivable that the layer element, in particular hot-formable, can only be formed after it has been heated.

In one embodiment of the method, provision is made for the layer element to be cooled down after it has been heated.

The layer element preferably solidifies after it has cooled down.

The cooled sheet element is preferably essentially rigid.

In one embodiment of the method, it is provided that the layer element is shrunk onto the battery cells.

The layer element is preferably only shrunk onto a portion of the battery cells.

In particular, the battery cells are not completely surrounded by the layer element.

It can be advantageous, for example, if the layer element is shrunk onto the battery cells only on one side of the battery cells that is first in the direction of the longitudinal axes of the battery cells.

For example, it can be provided that the layer element is shrunk onto the battery cells over a maximum of approximately 50% of a length of a respective battery cell.

In the context of this description and the appended claims, a length of the battery cells is understood to mean, in particular, a length of the battery cells in a direction running parallel to a longitudinal axis of the battery cells.

The layer element is preferably shrunk onto the battery cells to at least approximately 10%, in particular to at least approximately 20%, for example to at least approximately 30%, of a length of a respective battery cell.

In one embodiment of the method, it is provided that the battery cells are aligned relative to one another before fixing them in the layer element, in particular by means of a tool.

The battery cells are preferably arranged parallel to one another before they are fixed in the layer element.

In particular, the battery cells are arranged in such a way that the longitudinal axes of the battery cells are arranged parallel to one another.

It can also be favorable if the battery cells are arranged in a predetermined pattern before they are fixed in the layer element.

In particular, it is conceivable that the battery cells are arranged in the predetermined pattern in several rows and several columns.

It can be advantageous, for example, if the battery cells each have an identical first spacing from one another in a row direction of the predetermined pattern.

Furthermore, it is preferably conceivable that the battery cells each have an identical second distance from one another in a column direction of the predefined pattern.

It is grateful that the first distance in the row direction is smaller or larger than the second distance in the column direction.

In one embodiment of the method, it is provided that the battery cells are initially aligned parallel to one another and / or in a predetermined pattern.

The battery cells are preferably arranged parallel to one another and / or in the predetermined pattern by means of a tool.

The tool comprises in particular a first tool half with a negative shape in which the battery cells can be at least partially received.

The first tool half is in particular a die element.

The first tool half in particular forms a shaping element.

The first tool half has in particular a negative shape of the predetermined pattern.

It can be advantageous, for example, if the first tool half comprises a plurality of positioning openings, in each of which a battery cell can be received for aligning the battery cells.

The first tool half preferably comprises a plurality of rows and a plurality of rows of positioning openings, a row and / or a row each comprising a plurality of positioning openings.

For example, it is conceivable that the battery cells are arranged in the positioning openings of the first tool half by means of a positioning device, for example by means of an industrial robot.

The layer element is preferably deformed in that the layer element is positioned between the battery cells and the first tool half and the battery cells are then arranged in the positioning openings of the first tool half.

The layer element is preferably clamped by means of the battery cells in the positioning openings of the first tool half and is thereby deformed.

In particular, the layer element is clamped between a positioning opening wall and a battery cell.

The tool preferably comprises a second tool half with a negative shape in which the battery cells can be at least partially received.

The first and second tool halves are preferably movable relative to one another.

The second tool half preferably has a negative shape of the predetermined pattern.

The second tool half preferably also comprises several positioning openings, in each of which a battery cell can be accommodated for aligning the battery cells.

It can be favorable if the positioning openings of the first tool half and / or of the second tool half are each essentially cylindrical, in particular essentially circular-cylindrical.

An inner diameter of the positioning openings of the first tool half is preferably greater than an outer diameter of the battery cells.

It can be favorable, for example, if an inner diameter of the positioning openings of the first tool half is essentially the same size or smaller than the sum of an outer diameter of the battery cells and twice the material thickness of the layer element.

The layer element and a respective battery cell can preferably be clamped within the positioning openings of the first tool half.

It can also be favorable if an inner diameter of the positioning openings of the second tool half essentially corresponds to an outer diameter of the battery cells.

In one embodiment of the method, provision is made for individual or multiple battery cells to be moved in a predetermined pattern parallel to a longitudinal axis of the battery cells after the parallel alignment and / or after the alignment.

The battery cells are preferably moved against a stop which is preferably arranged perpendicular to a longitudinal axis of the battery cells.

It can be particularly favorable here for the battery cells to be moved against a stop in such a way that the base areas of all the battery cells are arranged in a single plane after the movement.

In one embodiment of the method, it is provided that individual or multiple battery cells are moved parallel to a longitudinal axis of the battery cells to such an extent that the base areas of all the battery cells are essentially arranged in a single plane.

For example, it is conceivable that all battery cells are moved against a stop.

In particular, it can be provided that the first tool half and the second tool half are moved towards one another.

The positioning openings of the first tool half and / or the positioning openings of the second tool half preferably include a stop.

Alternatively, it is conceivable that the first or second tool half comprises a stop and that the second or the first tool half comprises a movement device for moving one or more battery cells, by means of which the battery cells can be moved against the stop.

It can be advantageous, for example, if the movement device comprises one or more pistons which can be displaced in positioning openings of the first or the second tool half.

As an alternative to this, it is conceivable that the movement device comprises one or more nozzle elements which open into the positioning openings of the first or the second mold half.

The layer element and / or the battery cell arranged in a respective positioning opening of the first tool half are preferably moved by pressurizing a pressure space delimited by the layer element and the positioning opening.

• ein Rahmenelement;
• ein Bodenelement; und
• mehrere Batteriezellen,
• wobei die Batteriezellen durch das erfindungsgemäße Verfahren zum Fixieren von Batteriezellen in einem Lagenelement fixiert sind und wobei das Lagenelement und die in dem Lagenelement fixierten Batteriezellen an dem Bodenelement des Batteriemoduls festgelegt sind.

The present invention further relates to a battery device which comprises one or more battery modules, wherein a respective battery module comprises the following:

• a frame member;
• a floor element; and
• several battery cells,
• wherein the battery cells are fixed by the method according to the invention for fixing battery cells in a layer element and wherein the layer element and the battery cells fixed in the layer element are fixed on the base element of the battery module.

It can be particularly favorable if the layer element in which the battery cells are fixed is connected to the base element of a battery module in a materially bonded manner, in particular by means of a thermal paste.

After the deformation of the layer element, in particular after the deformed layer element has cooled, the deformed layer element preferably forms a holding body by means of which the battery cells are held.

The present invention also relates to a method for producing a battery device, in particular a battery device according to the invention.

• - Bereitstellen von zwei oder mehr als zwei Batteriemodulen;
• - Stapeln der Batteriemodule entlang einer Stapelrichtung.

The method of making a battery device preferably includes:

• - Provision of two or more than two battery modules;
• - Stacking the battery modules along a stacking direction.

It can be beneficial if the battery modules of the battery device are clamped together and / or between two end bodies.

For example, it is conceivable that two adjacent battery modules are connected to one another and / or braced to one another in layers.

The method according to the invention for producing a battery device, in particular for producing a battery device according to the invention, preferably has one or more of the features and / or advantages described in connection with the battery device according to the invention.

Further features and / or advantages of the invention are the subject matter of the following description and the graphic representation of exemplary embodiments.

• 1 einen schematischen Längsschnitt durch eine Ausführungsform einer Batterievorrichtung, welche mehrere Batteriemodule umfasst;
• 2 eine schematische perspektivische Darstellung eines Ausschnitts eines Batteriemoduls der Batterievorrichtung aus 1;
• 3 eine vergrößerte Darstellung des Bereichs III in 2;
• 4 eine schematische perspektivische Darstellung eines Teilschnitts eines Batteriemoduls der Batterievorrichtung aus 1;
• 5 eine vergrößerte Darstellung des Bereichs V in 4;
• 6 eine schematische Draufsicht auf einen Ausschnitt eines Batteriemoduls der Batterievorrichtung aus 1;
• 7 eine schematische perspektivische Darstellung eines Ausschnitts eines Batteriemoduls der Batterievorrichtung aus 1 von unten;
• 8 eine schematische perspektivische Darstellung eines Ausschnitts eines Batteriemoduls der Batterievorrichtung aus 1 von oben;
• 9 eine vergrößerte Darstellung des Bereichs IX in 7;
• 10 eine vergrößerte Darstellung des Bereichs X in 8;
• 11 einen schematischen Schnitt durch ein Batteriemodul der Batterievorrichtung aus 1 entlang der Linie XI-XI in 6;
• 12 einen schematischen Schnitt durch ein Batteriemodul der Batterievorrichtung aus 1 entlang der Linie XII-XII in 6;
• 13 einen schematischen Schnitt durch ein Batteriemodul der Batterievorrichtung aus 1 entlang der Linie XIII-XIII in 6;
• 14 eine schematische perspektivische Darstellung eines Ausschnitts von aufeinander gestapelten Bodenelementen und Abstandshalterelementen einer Batterievorrichtung aus 1;
• 15 eine explodierte schematische perspektivische Darstellung eines Ausschnitts der Bodenelemente und der Abstandshalterelemente aus 14;
• 16 eine schematische Draufsicht auf ein Temperierelement einer Batterievorrichtung aus 1;
• 17 eine schematische perspektivische Darstellung eines Ausschnitts einer weiteren Ausführungsform einer Batterievorrichtung;
• 18 einen Ausschnitt einer schematischen perspektivischen Darstellung einer weiteren Ausführungsform einer Batterievorrichtung;
• 19 einen Ausschnitt einer schematischen perspektivischen Darstellung eines Endkörpers der Batterievorrichtung aus 18;
• 20 eine schematische Darstellung eines ersten Verfahrensschritts einer Ausführungsform eines Verfahrens zum Fixieren von Batteriezellen;
• 21 eine schematische Darstellung eines an den ersten Verfahrensschritt aus 20 anschließenden zweiten Verfahrensschritts der Ausführungsform eines Verfahrens zum Fixieren von Batteriezellen;
• 22 eine schematische Darstellung eines an den zweiten Verfahrensschritt aus 21 anschließenden dritten Verfahrensschritts der Ausführungsform eines Verfahrens zum Fixieren von Batteriezellen;
• 23 eine schematische Darstellung von in einem verformten Lagenelement fixierten Batteriezellen;
• 24 eine schematische Darstellung der in dem verformten Lagenelement fixierten Batteriezellen, wobei das verformte Lagenelement einen Haltekörper bildet und der Haltekörper mit einem Bodenelement eines Batteriemoduls einer Batterievorrichtung verbunden ist;
• 25 eine vergrößerte Darstellung des Bereichs XXV in 24;
• 26 eine schematische perspektivische Darstellung eines Rahmenelements eines Batteriemoduls einer weiteren Ausführungsform einer Batterievorrichtung;
• 27 eine vergrößerte Darstellung des Bereichs XXVII in 26;
• 28 eine der Darstellung aus 27 entsprechende Darstellung in einer Explosionsdarstellung;
• 29 eine schematische Draufsicht auf das Rahmenelement aus 26 bei Blick in Richtung des Pfeils 29 in 26; und
• 30 eine vergrößerte Darstellung des Bereichs XXX in 29.

In the drawings show:

• 1 a schematic longitudinal section through an embodiment of a battery device comprising a plurality of battery modules;
• 2 a schematic perspective illustration of a section of a battery module of the battery device 1 ;
• 3 an enlarged view of the area III in 2 ;
• 4th a schematic perspective illustration of a partial section of a battery module of the battery device 1 ;
• 5 an enlarged view of the area V in 4th ;
• 6 a schematic plan view of a section of a battery module of the battery device 1 ;
• 7th a schematic perspective illustration of a section of a battery module of the battery device 1 from underneath;
• 8th a schematic perspective illustration of a section of a battery module of the battery device 1 from above;
• 9 an enlarged illustration of the area IX in 7th ;
• 10 an enlarged view of the area X in 8th ;
• 11 a schematic section through a battery module of the battery device 1 along the line XI-XI in 6 ;
• 12th a schematic section through a battery module of the battery device 1 along the line XII-XII in 6 ;
• 13 a schematic section through a battery module of the battery device 1 along the line XIII-XIII in 6 ;
• 14th a schematic perspective illustration of a section of stacked floor elements and spacer elements of a battery device 1 ;
• 15th an exploded schematic perspective illustration of a section of the floor elements and the spacer elements 14th ;
• 16 a schematic plan view of a temperature control element of a battery device 1 ;
• 17th a schematic perspective illustration of a section of a further embodiment of a battery device;
• 18th a section of a schematic perspective illustration of a further embodiment of a battery device;
• 19th a section of a schematic perspective illustration of an end body of the battery device 18th ;
• 20th a schematic representation of a first method step of an embodiment of a method for fixing battery cells;
• 21st a schematic representation of one of the first process step 20th subsequent second method step of the embodiment of a method for fixing battery cells;
• 22nd a schematic representation of one of the second process step 21st subsequent third method step of the embodiment of a method for fixing battery cells;
• 23 a schematic representation of battery cells fixed in a deformed sheet element;
• 24 a schematic representation of the battery cells fixed in the deformed layer element, wherein the deformed layer element forms a holding body and the holding body is connected to a base element of a battery module of a battery device;
• 25th an enlarged view of the area XXV in 24 ;
• 26th a schematic perspective illustration of a frame element of a battery module of a further embodiment of a battery device;
• 27 an enlarged view of the area XXVII in 26th ;
• 28 one of the representation 27 corresponding representation in an exploded view;
• 29 a schematic plan view of the frame element 26th when looking in the direction of arrow 29 in 26th ; and
• 30th an enlarged view of the area XXX in 29 .

Identical or functionally equivalent elements are provided with the same reference symbols in all figures.

The 1 to 16 show an embodiment of a battery device designated as a whole by 100.

The battery device 100 preferably comprises several battery modules 102 .

It can be beneficial if the battery modules 102 the battery device 100 are designed to be self-supporting.

Preferably each comprises a battery module 102 a frame element 104 , a floor element 106 as well as several battery cells 108 .

Individual or several, in particular all, battery modules are preferred 102 the battery device 100 designed identically.

In particular, it is conceivable that the frame elements 104 and / or the floor elements 106 of all battery modules 102 the battery device 100 are designed identically.

The frame elements 104 are preferably made of a plastic material, in particular injection molded.

Preferably the frame members are 104 Plastic injection molded components.

It can be beneficial if the floor elements 106 are made of a metallic material.

The floor elements 106 of the battery modules 102 are preferably aluminum plates. It can be particularly advantageous if the floor elements 106 of the battery modules AlMgSi0,5 include or are formed from this.

By means of a metallic floor element 106 is preferably heat from the battery cells 108 of a respective battery module 102 steerable away.

The battery cells 108 are preferably galvanic cells, in particular so-called secondary cells, which are preferably rechargeable.

It can be beneficial if the battery modules 102 the battery device 100 along a stacking direction 110 are arranged or can be arranged.

The battery modules preferably comprise 102 Electrical contacting elements, not shown in the drawings, by means of which two adjacent battery modules 102 together by stacking the battery modules 102 along the stacking direction 110 can be connected in series.

It can be beneficial if a respective battery module 102 the battery device 100 a detection device, not shown in the drawings, for detecting the cell voltages of the battery cells 108 of the battery module 102 and / or for detecting the temperatures of the battery cells 108 of the battery module 102 includes.

It can also be favorable if a respective battery module 102 the battery device 100 a balancer, not shown in the drawings, for balancing the battery cells 108 of the battery module 102 includes.

For example, it is conceivable that a respective battery module 102 a first contacting element and a second contacting element, wherein the first and the second contacting element in the stacking direction 110 on opposite sides of the battery module 102 are arranged.

The first contacting element and the second contacting element are preferably of a respective battery module 102 arranged such that the first contacting element of a first battery module 102 two adjacent battery modules 102 and the second contacting element of a second battery module 102 two adjacent battery modules 102 are in electrically conductive contact with one another.

The floor elements preferably have 106 parallel to the stacking direction 110 a medium material thickness 109 in the range from approximately 2 mm to approximately 6 mm, for example from approximately 4 mm (cf. 11 and 12th ).

The battery device 100 can preferably be arranged such that the stacking direction 110 of the battery modules 102 runs parallel to the direction of gravity G. The battery device 100 is particularly arranged "standing" (cf. 1 ).

Alternatively, it is conceivable that the battery device 100 can be arranged such that the stacking direction 110 of the battery modules 102 runs essentially perpendicular to the direction of gravity G. The battery device 100 is in particular arranged “lying down”.

A battery module 102 preferably comprises at least about 50 battery cells 108 .

For example, it is conceivable that a battery module 102 about 200 to about 600 battery cells 108 , for example about 400 battery cells 108 , includes.

Preferably the frame members are 104 of the battery modules 102 formed annularly closed.

Preferably the frame elements comprise 104 of the battery modules 102 an annular closed wall 111 . The frame element 104 comprises, for example, a connecting web, not shown in the drawings, which is located between two opposing wall sections of the wall 111 of the frame element 104 is arranged and connects them together.

It can be beneficial if the frame element 104 and the floor element 106 of a respective battery module 102 a particularly cup-shaped receiving space 112 define in which the battery cells 108 of the respective battery module 102 are included.

The recording room 112 a battery module 102 is preferably from the frame member 104 and from the floor element 106 of the battery module 102 as well as from the floor element 106 of an adjacent battery module 102 limited.

The frame element 104 of a respective battery module 102 preferably surrounds all battery cells 108 of the battery module 102 , especially in one perpendicular to the stacking direction 110 trending direction.

The frame elements 104 of the battery modules 102 preferably form housing sections 114 the battery device 100 .

The frame elements 104 of the battery modules 102 Together they form, in particular, an outer skin 116 the battery device 100 .

It can be provided in particular that a surface of the wall 111 of the respective frame element 104 part of a surface of a housing 118 the battery device 100 forms.

The frame elements 104 of the battery modules 102 the battery device 100 are thus in a direction perpendicular to the stacking direction 110 extending radial direction preferably not limited by an additional housing.

Preferably, the manufacturing cost of the battery device 100 can be reduced by the omission of an additional housing.

It can be beneficial if the surface of the wall 111 of the frame element 104 of a respective battery module 102 coated with a metallic material, in particular vapor-deposited. Electromagnetic compatibility of the battery device is preferred 100 can be increased.

In the 1 to 16 illustrated embodiment of the battery device 100 comprises a respective frame element 104 especially a double wall 120 that is an inner wall element 122 and an outer wall member 124 includes.

It can be beneficial if longitudinal axes 126 of the battery cells 108 of the battery modules 102 substantially parallel to the stacking direction 110 of the battery modules 102 are arranged.

Preferably, by an arrangement of the longitudinal axes 126 of the battery cells 108 of the battery modules 102 parallel to the stacking direction 110 of the battery modules 102 an outer contour of the frame elements 104 of the battery modules 102 can be optimally adapted to an available installation space, for example in a vehicle.

In particular, the available installation space, for example in a vehicle, can be optimally used.

It can be beneficial if a degree of filling of the receiving space 112 of the battery modules 102 the battery device 100 can be increased by the fact that the longitudinal axes 126 of the battery cells 108 parallel to the stacking direction 110 of the battery modules 102 are arranged.

An energy storage capacity of the battery modules is preferably increased by increasing the degree of filling 102 and particularly the battery device 100 can be increased.

To increase the degree of filling, it can be provided that the battery cells 108 Are round cells. The battery cells 108 are in particular at least approximately rotationally symmetrical to the longitudinal axis 126 educated.

By using round cells, the recording space is 112 of the battery modules 102 preferably at least approximately completely fillable.

The inner wall element 112 and / or the outer wall element 124 the double wall 120 are preferably formed in a closed ring shape.

Preferably, by providing the outer wall element 124 and / or the inner wall element 122 even if the outer wall element fails 124 a closed cover for the battery cells, for example in the event of a crash 108 of a respective battery module 102 available.

The inner wall element 122 and / or the outer wall element 124 are preferably arranged essentially parallel to one another.

Wall sections of the inner wall element lying opposite one another 122 and the outer wall element 124 are in particular by means of several connecting webs 128 connected to each other (cf. 3 and 5 ).

The connecting webs preferably run 128 parallel to the stacking direction 110 the battery device 100 .

It can be beneficial if the connecting webs 128 for example, are arranged at regular intervals from one another.

The double wall 120 of the battery modules 102 can preferably be flowed through with a temperature control medium, in particular parallel to the stacking direction 110 the battery device 100 . By flowing through the double wall 120 with a temperature control medium are preferably battery cells 108 of the battery modules 102 temperature controllable.

Preferably, by providing the double wall through which a temperature control medium can flow 120 fire protection and / or improved propagation protection of the battery device 100 be realized, in particular by wetting the outer wall element 124 and / or the inner wall element 122 with temperature control medium.

By wetting the outer wall element 124 and / or the inner wall element 122 With the temperature control medium, the frame element can be burned off or melted 104 be made difficult, delayed and / or prevented.

Preferably, by providing the double wall through which a temperature control medium can flow 120 Furthermore, an electromagnetic compatibility (EMC) of the battery device 100 can be increased, especially if the double wall 120 is flowed through with an electrically conductive temperature control medium.

It can also be favorable if by means of the double wall 120 an increased mechanical strength of the frame element 104 can be provided.

The double wall 120 of the frame element 104 preferably delimits a temperature control room 130 of the respective battery module 102 , preferably at least on both sides (cf. 11 ). The temperature control room 130 is preferably closed in a ring.

The temperature control room 130 of a respective battery module 102 is in the stacking direction 110 preferably also from the floor element 106 of the battery module 102 and from a floor element 106 of an adjacent battery module 102 limited (cf. 1 ).

The floor element 106 a battery module 102 preferably comprises one or more passage openings 132 , which in the temperature control room 130 of the battery module 102 flow out.

The passage openings 132 are, for example, circular.

For reasons of clarity, the 3 and 5 only individual passage openings 132 marked with a reference symbol.

The temperature control room 130 is preferably with the exception of the passage openings 132 completely from the inner wall element 122 , the outer wall element 124 , from the floor element 106 of the respective battery module 102 and from a floor element 106 of an adjacent battery module 102 limited.

The temperature control room 130 of a respective battery module 102 faces in a perpendicular to the stacking direction 110 the battery device 100 taken cross-section preferably a temperature control room contour.

The temperature control rooms 130 neighboring battery modules 102 are preferably fluidically connected to one another, in particular by means of the passage openings 132 of the floor element 106 of the battery modules 102 .

The passage openings 132 In this case, in particular, form temperature control medium inlets and / or temperature control medium outlets, by means of which temperature control medium enters the temperature control space 130 of a respective battery module 102 can be introduced and / or extracted from this.

A temperature control room 130 in particular each forms a temperature control channel 135 a temperature control device 137 of a respective battery module 102 .

It can be beneficial if the passage openings 132 are arranged essentially along a line. The passage openings 132 are preferably arranged at regular intervals from one another along the line. In particular, it can be provided that the passage openings 132 of the floor element 106 are arranged along a line which runs along the contour of the temperature control room 130 of a respective battery module 102 runs.

A respective battery module 102 the battery device 100 preferably comprises two sealing elements 134 .

By means of the sealing elements 134 of the battery modules 102 For example, a sealing effect according to protection class IP 6K9K can be achieved.

Preferably is between the frame element 104 and the floor element 106 a battery module 102 a first sealing element 134 arranged.

It can be beneficial if between the frame element 104 and a floor element 106 of an adjacent battery module 102 a second sealing element 134 is arranged.

It can be advantageous, for example, if a sealing element 134 when manufacturing the frame element 104 to the frame element 104 is molded on.

Alternatively or in addition to this, it is possible that one or more sealing elements 134 to the floor element 106 are molded, while a still to be described holding body on the floor element 106 is injected.

For example, it is conceivable that on opposite sides of the floor element 106 one sealing element each 134 to the floor element 106 is molded on.

Alternatively, it is conceivable that a sealing element 134 regardless of the frame element 104 and / or is produced independently of the holding body to be described below. Preferably one is independent of the frame element 104 and / or sealing element produced independently of the holding body 134 in sealing element receiving grooves of the frame element 104 inserted.

The sealing elements of a battery module 102 preferably comprise a first sealing section 136 and a second sealing portion 138 (cf. 3 , 5 , 10 and 11 ).

The first sealing section 136 and / or the second sealing section 138 are preferably closed in a ring.

The first sealing section 136 and the second sealing portion 138 the sealing elements 134 each preferably comprise a sealing lip which, for reasons of clarity, is not identified with a reference symbol in the figures.

The first sealing section 136 and the second sealing portion 138 are, for example, connected to one another, for example by means of one or more web elements 140 (cf. 5 , 10 and 12th ).

The sealing elements are preferably 134 formed in one piece.

It can be advantageous if radially within the line along which the passage openings 132 are arranged, and radially outside the line along which the through openings 132 are arranged, each with a sealing section 136 , 138 a sealing element 134 is arranged.

The sealing sections 136 , 138 the sealing elements 134 are preferably closed in an annular manner and in particular run essentially parallel to the line along which the passage openings 132 are arranged.

A respective battery module preferably comprises 102 the battery device 100 one or more spacer elements 142 , by means of which the floor elements 106 of the battery modules 102 are arranged or can be arranged essentially parallel to one another (cf. 14th and 15th ).

It can be favorable if the spacer elements 142 a battery module 102 Are designed to be pressure-stable.

The spacer elements preferably have 142 a battery module 102 a higher pressure stability than the frame element 104 of the battery module 102 , particularly in a parallel to the stacking direction 110 the battery device 100 trending direction.

The spacer elements 142 preferably comprise or are formed from a metallic material.

The spacer elements 142 are in particular in the frame element 104 of a respective battery module 102 used.

The frame element 104 of a respective battery module 102 preferably comprises several recordings 144 , being in each shot 144 preferably a spacer element 142 is arranged (cf. 12th ).

It can be favorable if the spacer elements 142 essentially cylindrical.

Preferably the spacer elements are 142 of a respective battery module 100 in a perpendicular to the stacking direction 110 the battery device 100 running direction outside the double wall 120 of the frame element 104 a battery module 102 arranged.

It can be favorable if the spacer elements 142 two adjacent battery modules 102 in the stacking direction 110 the battery device 100 are arranged in alignment (cf. 14th and 15th ).

The spacer elements 142 each preferably comprise two sides of the spacer element facing away from one another 142 arranged contact surfaces 146 (cf. 5 , 10 and 12th ).

A respective spacer element is preferably located 142 with a first contact surface 146 on the floor element 106 of the respective battery module 102 and with a second contact surface 146 on the floor element 106 of an adjacent battery module 102 or can be applied to this.

An introduction of force from the spacer elements is preferred 142 in the floor elements 106 realizable, in particular parallel to the stacking direction 110 .

In particular, there is a compressive force from the spacer elements 142 on the contact surfaces 146 the spacer elements 142 adjacent floor elements 106 transferable.

It can be beneficial if the two contact surfaces 146 a spacer element 142 a distance 148 each other, which is substantially one parallel to the stacking direction 110 taken height 150 the wall 111 , especially the double wall 120 , the frame element 104 a battery module 102 corresponds to (cf. 12th ).

It can preferably be prevented that the frame elements 104 of the battery modules 102 which comprise or are formed from a plastic material, due to a parallel to the stacking direction 110 the battery device 100 on the battery modules 102 acting clamping force are compressed.

Preferably the spacer elements are 142 of a respective battery module 102 Bolt elements 152 or sleeve elements 154 .

As sleeve elements 154 trained spacer elements 142 are preferably designed as a hollow cylinder.

It is particularly conceivable that the spacer elements 142 of a respective battery module 102 in a perpendicular to the stacking direction 110 the battery device 100 taken cross-section are essentially circular or annular.

The spacer elements 142 are particularly designed to be rotationally symmetrical to a longitudinal axis thereof.

The spacer elements 142 include, for example, a spacer section 156 , in which the spacer elements 142 are in particular cylindrical, for example circular cylindrical.

The spacer section 156 preferably runs between the contact surfaces 146 a spacer element 142 .

It can also be favorable if the spacer elements 142 furthermore an insertion section 158 include, in which the spacer elements 142 are in particular cylindrical, for example circular cylindrical.

The lead-in section 158 a spacer element 142 is preferably in the spacer section 156 one in the stacking direction 110 the battery device 100 adjacent spacer element 142 insertable.

In the 1 to 15th illustrated embodiment of the battery device 100 are the battery modules 102 the battery device 100 for example by means of the spacer elements 142 braced together.

The spacer elements 142 preferably each include screw elements 160 , being in the stacking direction 110 the battery device 100 adjacent spacer elements 142 can be screwed together (cf. 12th ).

For example, it is conceivable that the insertion section 158 a spacer element 142 comprises an external thread and / or that the spacer section 156 a spacer element 142 comprises an internal thread.

It can be beneficial if there are two adjacent battery modules 102 be clamped together and / or screwed.

Alternatively, it is conceivable that the battery modules 102 the battery device 100 by means of the spacer elements 142 through clamping elements 162 are strained, which in the 1 and 12th are shown in dashed lines.

Preferably the clamping elements are 162 the battery device 100 through as sleeve elements 154 trained spacer elements 142 passed through.

It can be provided that the battery modules 102 the battery device 100 between two end bodies 164 by means of the clamping elements 162 are braced or braced.

The two end bodies 164 comprise, for example, a metallic material or are formed from this, in particular steel or aluminum.

It can be favorable if the two end bodies 164 include fastening elements, not shown in the drawings, by means of which the battery device 100 can be fixed to a supporting structure, for example to a supporting structure of a vehicle. It can therefore be beneficial if the battery device 100 exclusively by means of the end body 164 can be fixed to a supporting structure.

As an alternative or in addition to this, it is conceivable that the battery modules 102 the battery device 100 furthermore each comprise individual or several further fastening elements by means of which the battery device 100 can be fixed to a supporting structure.

By tensioning the battery modules 102 there is preferably essentially no force on the battery cells 108 of the battery modules 102 exercised, in particular parallel to the stacking direction 110 and / or parallel to a longitudinal axis 126 of the battery cells 108 of a respective battery module 102 .

It can be beneficial if the clamping elements 162 are so-called tie rods.

The clamping elements 162 comprise, for example, a metallic material or are formed from this, in particular steel or aluminum.

As clamping elements 162 trained tie rods each include, for example, a metallic rod which has a thread not shown in the drawings.

The rod is used to brace the battery modules 102 preferably parallel to the stacking direction 110 arranged.

For example, it is used to tension the battery modules 102 between the two end bodies 164 a screw element 166 , in particular a nut element, on a respective clamping element 162 unscrewed.

It can be beneficial if the battery modules 102 in the stacking direction 110 be clamped with a clamping force which corresponds to a tension of at most approximately 30%, for example of at most approximately 50%, of an upper yield point of a material of the clamping elements 162 corresponds.

Preferably the battery modules 102 the battery device 100 pressed together prior to tensioning the same, especially in the stacking direction 110 the battery device 100 .

It can be beneficial if sealing elements 134 of the battery modules 102 when pressing the battery modules 102 between a frame element 104 and a floor element 106 deformed, in particular compressed.

Preferably the frame elements comprise 104 of the battery modules 102 one or more parallel to the stacking direction 110 the battery device 100 from the frame element 104 protruding stacking projections 168 (cf. 11 to 13 ).

It can also be favorable if the frame elements 104 of the battery modules 102 one or more stacking recesses 170 include, in each of which a stack projection 168 of a frame element 104 of an adjacent battery module 102 is recordable.

The stacking tabs 168 and the stacking recesses 170 of a respective frame element 104 are preferably on opposite sides of the frame element 104 arranged (cf. 9 and 10 ).

Preferably by means of the stacking projections 168 and / or by means of the stacking recesses 170 stacking the battery modules 102 the battery device 100 in the stacking direction 110 easable.

It can also be favorable if the frame element 104 of a respective battery module 102 with the floor element 106 of the battery module 102 non-positively and / or positively connected or connectable, for example clipped.

The frame element preferably comprises 104 of a respective battery module 102 one or more locking projections 172 .

The floor element preferably comprises 106 of a respective battery module 102 furthermore one or more locking recesses 174 , in which the locking projections 172 of the frame element 104 can be introduced (cf. 7th to 12th ).

The locking projections 172 of a frame element 104 each preferably comprise two locking elements 176 . Preferably comprises a latching element 176 a locking projection 172 one locking hook each. For reasons of clarity, the latching hooks are not identified in the figures with a reference number.

In the 7th to 12th are the locking projections 172 and the locking recesses 174 radially within a frame element 104 of a respective battery module 102 arranged.

As an alternative, it is conceivable that the locking projections 172 radially outside the wall 111 , in particular radially outside the double wall 120 , the frame element 104 of a respective battery module 102 are arranged.

It can be particularly favorable if the recording space 112 of a respective battery module 102 delimiting part of the floor element 106 of the respective battery module 102 no locking recesses 174 and thus in particular has no passage openings.

For example, an at least partial pouring of the receiving space can thus be achieved 112 with potting compound and / of a fixing of the battery cells 108 on the floor element 106 be facilitated by means of potting compound.

The latching hooks of the two latching elements preferably engage behind 176 a locking projection 172 the floor element 106 of a respective battery module 102 if the frame element 104 with the floor element 106 is non-positively and / or positively connected, in particular clipped.

The frame elements 104 preferably further comprise a stiffening structure on a circumferential surface 178 , for example a stiffening rib structure 180 .

By means of the stiffening structure 178 is preferably a rigidity of an injection-molded frame element, for example 104 expandable.

The stiffening rib structure 178 the frame element preferably comprises a plurality of rib elements 182 .

The floor elements 106 of the battery modules 102 , which preferably comprise or are formed from a metallic material, preferably form part of an outer surface 184 the battery device 100 (cf. 1 and 11 ), particularly in a direction perpendicular to the stacking direction 110 the battery device 100 trending direction.

The floor elements 106 in particular form an annularly closed part of the outer surface 184 the battery device 100 . In particular, form the floor elements 106 of the battery modules 102 each ring-shaped closed surface sections of the outer surface 184 the battery device 100 .

The through the floor elements 106 of the battery modules 102 formed annularly closed surface portions are in the stacking direction 110 the battery device 100 preferably by the frame elements 104 of the battery modules 102 separated from each other.

When the floor elements 106 of the battery modules 102 up to the outer surface 184 the Battery device 100 extend is by means of the floor elements 106 preferably heat to the outer surface 184 the battery device 100 deductible.

Preferably the battery cells are 108 of a respective battery module 102 thermally with the floor element 106 of the battery module 102 coupled.

For example, it is conceivable that the battery cells 108 of a respective battery module 102 thermally with the floor element by means of a thermal paste and / or by means of a potting compound 106 of the battery module 102 are coupled.

Preferably the battery cells are 108 of a respective battery module 102 on the floor element 106 of the battery module 102 set.

The battery cells 108 and the floor element 106 are in particular not in direct contact with the material.

In particular, there is passive temperature control of the battery device 100 by means of the floor elements 106 realizable.

In particular, the fact that the floor elements 106 part of the outer surface 184 the battery device 100 form a heat dissipation to the outer surface 184 the battery device 100 by means of the floor elements 106 realizable.

In particular, the battery cells are here 108 of a respective battery module 102 by means of the floor elements 106 coolable.

It can be beneficial if the floor elements 106 have a thermal conductivity of at least approximately 100 W / m * K, for example of at least approximately 150 W / m * K.

When the floor elements 106 If aluminum comprises or is formed from it, in particular AlMgSiO.5, these preferably have a thermal conductivity of approximately 186 W / m * K.

In an embodiment of the battery device not shown in the drawing 100 it is conceivable that the floor elements 106 of the battery modules 102 perpendicular to the stacking direction 110 the battery device 100 at least in sections, for example closed in a ring, over the frame elements 104 of the battery modules 102 stick out.

It can be provided that the battery device 100 comprises a heat sink and / or a temperature control element, which with individual or several, preferably with all, base elements 106 the battery device 100 are thermally coupled.

The heat sink preferably comprises one or more cooling fins.

The heat sink and / or the temperature control element are in particular on the outer surface 184 the battery device 100 arranged.

The heat sink is preferably in direct material contact with one or more, preferably with all, floor elements 106 the battery device 100 , in particular in each case on the part of the outer surface 184 the battery device 100 which of the respective floor elements 106 of the battery modules 102 is formed.

It can also be favorable if the floor elements 106 one or more temperature control channels not shown in the drawings, for example a temperature control channel structure.

A temperature control channel, in particular a temperature control channel structure, of the floor elements 106 can preferably be flowed through by means of a temperature control medium.

For example, it is conceivable that the floor elements 106 are formed in multiple layers and delimit a temperature control channel, in particular a temperature control channel structure.

A temperature control channel structure of the floor elements 106 is made, for example, by means of roll bonding.

It can be advantageous if a temperature control channel is provided in the floor elements 106 an active temperature control of the battery device 100 by means of the floor elements 106 is feasible.

The battery modules preferably comprise 102 furthermore a holding body 186 to hold the battery cells 108 of the respective battery module 102 .

The holding body 186 are preferably with the floor element 106 of a respective battery module 102 connected, in particular cohesively.

The holding body 186 are in particular formed in one piece.

The holding bodies preferably comprise 186 a plastic material or are formed from this.

The holding body 186 are in particular injection molded components, in particular one-piece injection molded components.

The holding body 186 preferably comprises several receiving openings 188 , in each of which a battery cell 108 of the battery module 102 is recorded.

For reasons of clarity, the 3 and 5 only individual receiving openings 188 marked with a reference symbol.

For example, it is conceivable that the holding body 186 about 200 to about 600 receiving openings 188 , for example about 400 receiving openings 188 , includes.

A number of the receiving openings 188 of the holding body preferably corresponds essentially to a number of the battery cells 108 a battery module 102 .

The holding bodies preferably comprise 186 of the battery modules 102 a honeycomb structure 190 or are made by a honeycomb structure 190 educated.

The honeycomb structure 190 the holding body 186 preferably comprises several, in particular polygonal, retaining elements 192 showing the receiving openings 188 limit.

The holding elements 192 are for example regular hexagons.

The holding elements are preferably 192 each adjacent to several other holding elements 192 arranged.

For example, it is conceivable that holding elements 192 the honeycomb structure 190 each adjacent to six other holding elements 192 are arranged.

The receiving openings 188 of a holding element 192 are preferably of several retaining element webs 194 limited, for example by six retaining element webs 194 .

There are preferably several retaining element webs 194 adjacent holding elements 192 at a knot 196 connected with each other.

It can be particularly favorable when at the node 196 three retaining element bars 194 three adjacent holding elements 192 are connected to each other.

The holding bodies are preferably 186 each to the floor element 106 a battery module 102 injected.

It can be beneficial if the holding body 186 at several nodes 196 arranged connection areas 198 include on which the holding body 186 each with the floor element 106 are connected, for example cohesively.

The holding bodies are preferably 186 at the connection areas 198 to the floor elements 106 injected.

For example, it is conceivable that about 50% of the nodes 196 of the holding body 186 a connection area 198 is arranged.

As an alternative to the one in the 1 to 6 and 11 to 15th shown holding body 186 can a respective battery module 102 one only in 11 Holding body shown in dashed lines 186 to hold the battery cells 108 include.

The battery cells 108 of a respective battery module 102 are preferably by means of potting compound 199 cohesively with the floor element 106 of the battery module 102 connected.

The potting compound 199 includes, for example, polyurethane, silicone and / or an epoxy resin.

The battery cells 108 are particularly in the potting compound 199 embedded.

The potting compound 199 forms in particular the in 11 Holding body shown in dashed lines 186 .

It can be beneficial if the battery cells 108 partially or completely in the potting compound 199 are embedded.

For example, it is conceivable that at least approximately 30%, for example at least approximately 50%, of a respective battery cell 108 based on a parallel to a longitudinal axis 126 the battery cell 108 measured length of the same in potting compound 199 is embedded.

Preferably the battery cells are 108 of a respective battery module 102 by means of the potting compound 199 thermally with the floor element 106 coupled and / or electrically isolated from it.

It can be beneficial if the battery cells 108 by means of the potting compound 199 at a distance in the range from approximately 0.2 mm to approximately 1.5 mm, preferably in the range from approximately 0.3 mm to approximately 1 mm, from the floor element 106 are arranged.

Preferably the two sealing elements are 134 of a respective battery module 102 with the Floor element 106 of the battery module 102 connected, in particular cohesively.

The sealing elements 134 are preferably each attached to the floor element 106 injected.

The two sealing elements 134 a battery module 102 are preferably on two opposite sides of the floor element 106 to the floor element 106 injected.

The floor elements 106 are preferably hybrid components, in particular metal-elastomer hybrid components.

Preferably individual, multiple or all battery modules 102 the battery device 100 in each case a degassing element, not shown in the drawing, for degassing the receiving space 112 of the respective battery module 102 .

It can be particularly favorable if each individual battery module 102 each comprises a degassing element.

The degassing element is preferably of a respective battery module 102 on the frame element 104 of the battery module 102 arranged.

For example, it is conceivable that the degassing element comprises or is formed by a bursting element and / or a pressure compensation element.

When all battery modules 102 the battery device 100 each comprise a degassing element, a particularly short degassing path can preferably be implemented, so that hot gases as directly as possible in the vicinity of the battery device 100 can be directed.

A propagation of a thermal runaway of battery cells is preferred 108 a battery module 102 on more battery cells 108 of the same battery module 102 and / or on battery cells 108 neighboring battery modules 102 preventable.

It can also be beneficial if the battery modules 102 the battery device 100 each include a propagation protection element not shown in the drawings.

The propagation protection elements preferably comprise a respective battery module 102 a heat-resistant and / or thermally insulating material, for example rock wool fleece and / or glass fiber fleece.

The propagation protection elements are, for example, with the floor elements 106 the battery modules connected, for example glued.

It can be beneficial if a propagation protection element of a battery module 102 on one of the recording room 112 of the battery module 102 remote side of the floor element 106 is arranged.

The propagation protection element preferably limits a battery module 102 while the recording room 112 of an adjacent battery module 102 .

By providing a propagation protection element, there is preferably propagation of a thermal runaway of battery cells 108 a battery module 102 on battery cells 108 of an adjacent battery module 102 preventable.

The ones in the 1 to 16 battery device shown 100 further comprises, for example, one or more temperature control elements 200 , which each between two adjacent battery modules 102 are arranged.

Such a temperature control element 200 is for example in 16 shown.

The temperature control elements preferably have 200 one perpendicular to the stacking direction 110 the battery device 100 taken on, which is substantially perpendicular to the stacking direction 110 the battery device 100 taken cross section of a receiving space 112 of the battery modules 102 the battery device 100 corresponds.

It can be beneficial, for example, if the temperature control elements 200 include or are formed by electrical resistance heating elements.

Preferably forms a temperature control element 200 , which comprises an electrical resistance heating element or is formed by this, a propagation protection element.

A temperature control element 200 , which comprises or is formed by an electrical resistance heating element, preferably comprises a heat-resistant material.

As an alternative or in addition to this, it is conceivable that the temperature control elements 200 , which each between two adjacent battery modules 102 are arranged, comprise one or more temperature control channels through which a temperature control medium, for example a cooling or heating liquid, is conductive.

It can be beneficial if the temperature control elements 200 are made by means of a rollbond process.

The temperature control elements preferably comprise 200 two or more than two tempering zones each 202 , in which different temperatures can be set.

In particular, the temperature control elements 200 in the tempering zones 202 a different heating power.

For example, it is conceivable that the temperature control elements 202 a radially inner temperature zone 204 and one the radially outer temperature control zone 206 include.

The radially outer temperature zone 206 preferably surrounds the radially inner temperature control zone 204 .

It can be beneficial if the temperature control elements 200 in the radially outer temperature zone 206 have a higher area-related heating output than in the radially inner temperature control zone 204 .

Preferably, by providing a temperature control element 200 with several temperature zones 204 a selective heating of individual groups of battery cells 108 are made possible. In particular, there are temperatures of the battery cells 108 a battery module 102 comparable.

Preferably, the temperatures of the battery cells are made uniform 108 a battery module 102 a higher maximum charging current and thus in particular a shortening of the charging time can be realized.

In particular, there is also a more uniform discharge of the battery cells 108 a battery module 102 realizable.

One in 17th illustrated embodiment of a battery device 100 differs from that in the 1 to 16 illustrated embodiment of a battery device 100 essentially in that the frame element 104 and the floor element 106 are made of a metallic material.

The frame element preferably forms 104 thereby a spacer element 142 .

It can be beneficial if the frame element 104 and / or the floor element 106 are made in one piece from a metallic material, for example aluminum.

For example, it is conceivable that the frame element 104 and the floor element 106 are a one-piece aluminum die-cast part.

Alternatively, it is conceivable that a floor element 106 cohesively with a frame element 104 connected, in particular welded, is, for example, by means of friction stir welding.

By materially connecting the floor element 106 and the frame element 104 is preferably a thermal and / or mechanical coupling of the floor element 106 and the frame element 104 realizable.

In particular, there is a metallic heat conduction from the floor element 106 in the frame element 104 realizable.

The frame element preferably comprises 104 one or more heat conducting elements 208 , in particular one or more cooling fins 210 which in particular on the outer surface 184 of the frame element 104 are arranged.

For example, it is conceivable that the cooling fins 210 parallel to the stacking direction 110 are arranged.

In particular, the temperature control device comprises 137 the one or more heat conducting elements 208 , especially the cooling fins 210 .

Preferably the outer surface is 184 of the frame element 104 by means of the heat conducting elements 208 , in particular by means of the cooling fins 210 , can be enlarged.

A ratio of the outside surface 184 of the frame element 104 to an inner surface of the frame member 104 is preferably at least about 1.3: 1, preferably at least about 1.5: 1.

It can also be favorable if the temperature control device 137 in addition to the heat conducting elements 208 comprises a fan, not shown in the drawings, by means of which the heat-conducting elements 208 can be blown on to dissipate heat from the same.

As an alternative or in addition to this, it is conceivable that the heat-conducting elements 208 can be inflated to dissipate heat from the same by the airstream when moving a vehicle.

Incidentally, the in 17th illustrated embodiment of a battery device 100 in terms of structure and function with the 1 to 16 illustrated embodiment of a battery device 100 so that reference is made to their description above.

One in the 18th and 19th illustrated embodiment of a battery device 100 differs from that in the 1 to 16 illustrated embodiment of a battery device 100 essentially in that one or both end bodies 164 the battery device 100 a distribution structure 201 for distributing the temperature control medium in the temperature control channels 135 of the battery modules 102 include.

It can be beneficial if the temperature control medium is used by means of the distributor structure 201 in the double wall 120 , especially in the temperature control room 130 a battery module 102 , is conductive, which is adjacent to an end body 164 is arranged.

The end bodies 164 include, for example, a cover element 203 and a particularly ring-shaped closed edge element 205 .

The edge element 205 protrudes parallel to the stacking direction 110 preferably over the cover element 203 and has a mechanical stabilizing effect, for example.

In the 18th and 19th illustrated embodiment of a battery device 100 have individual connecting webs 128a parallel to the stacking direction 110 the battery device 100 a height which is substantially the same as the height of the frame element 104 a battery module 102 corresponds.

Because of the connecting bridges 128a are in the double wall 120 , especially in the temperature control room 130 of the battery modules 102 , Temperature chambers 207 formed, which are particularly fluidly separated from each other.

It can be beneficial if the web elements 140 a sealing element 134 at the connecting bars 128a issue.

Preferably, the temperature chambers 207 by means of the sealing element 134 , in particular by means of the web elements 140 of the sealing element 134 to be sealed.

Within a respective temperature chamber 207 arranged connecting webs 128b separate the respective temperature chamber 207 preferably not completely fluid.

For example, it is possible that the inside a respective temperature chamber 207 arranged connecting webs 128b parallel to the stacking direction 110 the battery device 100 have a height which is smaller than the height of the frame element 104 a battery module 102 .

To temperature control medium in the temperature control chambers 207 the double wall 120 of the frame element 104 To be able to conduct, comprise one or both of the end bodies 164 in particular several distribution channels 209 the distribution structure 201 .

The distribution channels 209 include, for example, inlet channels 209a and / or return channels 209b .

It can be beneficial if a respective distribution channel 209 comprises a deflection, not shown in the drawings, which in the edge element 205 is arranged.

By means of the deflection, the temperature control medium can preferably be deflected by approximately 90 °.

The distribution channels 209 , especially the inlet ducts 209a and / or the return channels 209b , preferably each open at a perpendicular to the stacking direction 110 arranged end face of the edge element 165 at a distributor opening 211 .

It can be advantageous, for example, if there are three distributor openings 211 in one temperature chamber each 207 are directed into it.

It is particularly conceivable that in a temperature control chamber 207 distributor openings only 211 of inlet channels 209a and / or distribution openings only 211 of return ducts 209b are directed into it.

It can be particularly favorable when in adjacent temperature control chambers 207 alternating only distributor openings 211 of inlet channels 209a and / or distribution openings only 211 of return ducts 209b are directed into it.

The temperature of the frame element is preferably at least approximately constant 104 adjustable.

Incidentally, it is correct in the 18th and 19th illustrated embodiment of a battery device 100 in terms of structure and function with the 1 to 16 illustrated embodiment of a battery device 100 so that reference is made to their description above.

The 20th to 22nd show various method steps of an embodiment of a method for fixing battery cells 108 .

In the process, the battery cells 108 , in particular round cells, in a layer element 212 fixed, in particular by plastic deformation of the layer element 212 .

The layer element 212 is for example a thermoformable sheet element 212 .

The layer element 212 preferably comprises or is formed from a plastic material.

The layer element 212 in particular comprises or is formed from an electrically insulating material.

It can be advantageous, for example, if the layer element 212 comprises a polyolefin or is formed from this, for example polyethylene (PE) or polypropylene (PP).

The sheet element preferably comprises 212 a low-density polyethylene (LDPE).

The layer element 212 is for example a shrink film.

It is also conceivable, for example, that the layer element comprises polymethyl methacrylate (PMMA) or polycarbonate (PC) or is formed therefrom.

The battery cells 108 before fixing them in the sheet element 212 preferably aligned relative to one another, in particular by means of a tool 214 .

The tool 214 includes in particular a first tool half 216 with a negative shape in which the battery cells 108 are at least partially absorbable.

The first half of the tool 216 in particular has a negative shape of the predetermined pattern.

The tool 214 preferably comprises a second tool half 218 with a negative shape in which the battery cells 108 are at least partially absorbable.

The first and the second mold half 216 , 218 are preferably movable relative to one another.

The first half of the tool 216 is in particular a matrix element 220 .

The first half of the tool 216 in particular forms a shaping element 222 .

The first half of the tool 216 preferably comprises several positioning openings 224 , in each of which a battery cell 108 for aligning the battery cells 108 is recordable.

In particular, it is conceivable that the first tool half 216 several rows and several rows of positioning holes 224 comprises, wherein a row and / or a row each have a plurality of positioning openings 224 includes.

The second tool half preferably has 218 also a negative form of the given pattern.

The second half of the tool 218 preferably also comprises several positioning openings 224 , in each of which a battery cell 108 for aligning the battery cells 108 is recordable.

It can be beneficial if the positioning openings 224 the first half of the tool 216 and / or the second tool half 218 are each essentially cylindrical, in particular essentially circular cylindrical.

An inside diameter is preferred 226 the positioning openings 224 the first half of the tool 216 larger than an outside diameter 228 of the battery cells 108 .

It can be favorable, for example, if an inside diameter 226 the positioning openings 224 the first half of the tool 216 is essentially the same size or smaller than the sum of the outer diameter 228 of the battery cells 108 and a double material thickness 230 of the layer element 212 .

It can also be favorable if an inner diameter 232 of the positioning openings of the second tool half essentially the outer diameter 228 of the battery cells 108 corresponds.

The battery cells 108 are preferably in the positioning holes 224 the first half of the tool 216 arranged.

It can be favorable if a positioning device, not shown in the drawings, is used, for example an industrial robot.

Preferably the battery cells 108 arranged in the predetermined pattern in several rows and several columns.

For example, it is conceivable that the battery cells 108 each have an identical first distance from one another in a row direction of the predetermined pattern.

It can also be beneficial if the battery cells 108 each have an identical second spacing from one another in a column direction of the predetermined pattern.

It can be provided that the first distance in the row direction is smaller or larger than the second distance in the column direction.

The layer element is preferably 212 deformed by the sheet element 212 between the battery cells 108 and the first half of the tool 216 is positioned and then the battery cells 108 in the positioning openings 224 the first half of the tool 216 to be ordered.

Preferably, the layer element 212 and a respective battery cell 108 while within the positioning openings 224 the first half of the tool 216 jammed and deformed.

The layer element 212 is in particular between a positioning opening wall 234 and a battery cell 108 clamped.

Before fixing the battery cells 108 in the sheet element 212 these are preferably initially by means of the tool 214 aligned parallel to one another and / or in the specified pattern (cf. 21st ).

The battery cells 108 are in particular arranged such that the longitudinal axes 126 of the battery cells 108 are arranged parallel to each other.

After the parallel alignment and / or after the alignment in a predetermined pattern, one or more battery cells are preferably used 108 parallel to the longitudinal axes 126 of the battery cells 108 moved (cf. 22nd ).

Preferably the battery cells 108 against a stop 236 moves, which is preferably perpendicular to the longitudinal axes 126 of the battery cells 108 is arranged.

The battery cells 108 are preferably in such a way against the stop 236 that moves the base areas 238 of all battery cells 108 are arranged in a single plane after moving.

It can be beneficial if the first half of the tool 216 and the second half of the tool 218 be moved towards each other to the base surfaces 238 of the battery cells 108 to be arranged in one plane.

For example, it is conceivable that the positioning openings 224 the first half of the tool 216 and / or the positioning openings 224 the second half of the tool 218 a stop 236 embrace or form.

Alternatively, it is conceivable that the second tool half 218 a stop 236 includes and that the first tool half 216 a movement device, not shown in the drawings, for moving individual or multiple battery cells 108 includes, by means of which the battery cells against the stop 236 the second half of the tool 218 are movable.

For example, it is conceivable that the movement device comprises one or more pistons which are inserted into positioning openings 224 the first half of the tool 216 are relocatable.

As an alternative to this, it is conceivable that the movement device comprises one or more nozzle elements which are inserted into the positioning openings 224 the first half of the tool 216 flow out.

Preferably, the layer element 212 and / or in a respective positioning opening 224 arranged battery cell 108 thereby by pressurizing one of the sheet elements 212 and the positioning opening 224 limited pressure space 240 emotional.

In particular, the layer element 212 and those in a respective positioning opening 224 the first half of the tool 216 arranged battery cell 108 in the positioning opening 224 emotional.

Preferably the battery cells 108 in the sheet element 212 by heating the sheet element 212 and / or by subsequent cooling of the layer element 212 fixed.

The layer element 212 is preferably on the battery cells 108 shrunk.

The layer element 212 is in particular only on a partial area of the battery cells 108 shrunk.

Preferably the battery cells 108 not completely from the sheet element 212 surround.

It can be advantageous, for example, if the layer element 212 only on one towards the Longitudinal axes 126 of the battery cells 108 first side of the battery cells 108 is shrunk onto this.

For example, it can be provided that the layer element 212 each over a maximum of approximately 50% of a length 242 a respective battery cell 108 on the battery cells 108 is shrunk.

The layer element is preferably 212 in each case to at least approximately 10%, in particular to at least approximately 20%, for example to at least approximately 30%, of the length 242 a respective battery cell 108 on the battery cells 108 shrunk.

The layer element 212 lies after fixing the battery cells 108 preferably cup-shaped on the battery cells 108 at.

In particular, it can be provided that the layer element 212 to a maximum of approximately 50% on a lateral surface 244 a respective battery cell 108 is applied.

The layer element is preferably located 212 at least approximately 10%, for example at least approximately 20%, preferably at least approximately 30%, on a lateral surface 244 a respective battery cell 108 at.

It can also be favorable if the layer element after the battery cells have been fixed 108 completely on the base 238 a respective battery cell 108 is applied.

The cooled layer element 212 is preferably substantially rigid.

The plastically deformed layer element 212 preferably forms a holding body 186 a battery module 102 (cf. 23 to 25th ).

The 24 and 25th show a floor element 106 a battery module 102 , the sheet element 212 and those in the sheet element 212 fixed battery cells 108 on the floor element 106 of the battery module 102 are set.

The layer element is preferably 212 with the floor element 106 firmly connected, in particular by means of a thermal paste 246 (cf. 25th ).

One in the 26th to 30th illustrated embodiment of a frame element 104 a battery module 102 a battery device 100 differs from the in 18th illustrated embodiment of the frame element 104 a battery module 102 a battery device 100 essentially in that the frame element 104 a frame element body 250 includes, which is formed in several parts.

It can be favorable if the frame element base body 250 at its perpendicular to the stacking direction 110 the battery device 100 arranged end faces a receiving groove 251 for receiving a sealing element 134 includes.

For example, it is conceivable that the frame element base body 250 at its perpendicular to the stacking direction 110 the battery device 100 arranged end faces each have two grooves 251 for receiving a sealing element 134 comprises, the two receiving grooves arranged on a respective end face 251 in particular are arranged essentially parallel to one another.

The frame element 104 is preferably made of a metallic material, for example aluminum.

It can be beneficial if the frame element 104 is made by die-casting aluminum.

The frame element body 250 in particular comprises several frame element base body parts 252 .

The frame element body parts 252 are preferably aluminum die-cast parts.

It can be favorable if the frame element base body parts 252 are positively interconnected or connectable.

It can be particularly advantageous if several frame element base body parts connected to one another in a form-fitting manner 252 a frame element body 250 a ring-shaped closed frame element 104 form.

The frame element body parts 252 preferably each include form-fit elements 254 , by means of which the frame element base body parts 252 are positively connected to one another.

It can be favorable if the frame element base body parts 252 can be connected to one another in the manner of a puzzle.

The frame element body parts 252 are particularly connectable to one another in abutment.

A frame element preferably comprises part of the base body 252 two or more than two form-fit elements 254 .

The frame element body parts 252 are in particular in a parallel to the stacking direction 110 the battery device 100 extending direction connectable with each other.

It can be favorable if the frame element base body parts 252 can be positively connected to one another by means of a tongue and groove connection, for example by means of a dovetail connection.

For example, it is conceivable that interconnectable form-fit elements 254 as a connecting groove 256 and as a connecting rib 258 are trained.

It can be beneficial if a connecting groove 256 and / or a connecting rib 258 parallel to the stacking direction 110 the battery device 100 are arranged and / or parallel to the stacking direction 110 the battery device 100 extend.

In a perpendicular to the stacking direction 110 The cross section taken are the connecting groove 256 and / or the connecting rib 258 preferably formed essentially complementary to one another.

It can be advantageous, for example, if the connecting groove 256 and / or the connecting rib 258 perpendicular to the stacking direction 110 the battery device 100 have a trapezoidal cross-section, in particular in the form of an isosceles trapezoid.

The frame element body parts 252 are especially corner parts 260 and / or side panels 262 of the frame element body 250 .

For example, it is conceivable that the frame element base body 250 several, for example four, corner parts 260 comprises and / or that the frame element base body 250 several side panels 262 comprises, each with one or more side parts 262 between two corner parts 260 are arranged or can be arranged.

For example, it is conceivable that a corner part 260 formed frame element base body part 252 two connecting ribs 258 comprises, one as a side part 262 formed frame element base body part 252 one or two connecting grooves 256 includes.

It can be beneficial if the form-locking elements 254 the frame element base body parts 252 each on a connecting web 128 a frame element main body part 252 are arranged or formed on this.

It can be favorable if a frame element base body part 252 of the frame element body 250 one or more temperature chambers each 207 includes.

All connecting webs preferably have 128 parallel to the stacking direction 110 the battery device 100 a height which is substantially the same as the height of the frame element 104 a battery module 102 corresponds.

By means of the connecting webs 128 is in particular a temperature control medium parallel to the stacking direction 110 a battery device 110 controllable.

Incidentally, it is correct in the 26th to 30th illustrated embodiment of a frame element 104 a battery module 102 a battery device 100 in terms of structure and function with the in 18th illustrated embodiment of the frame element 104 a battery module 102 a battery device 100 so that reference is made to their description above.

Special embodiments are the following:

Embodiment 1 :

• ein Rahmenelement (104);
• ein Bodenelement (106); und
• mehrere Batteriezellen (108).

Battery device ( 100 ), the battery device ( 100 ) one or more battery modules ( 102 ), with a respective battery module ( 102 ) Includes:

• a frame element ( 104 );
• a floor element ( 106 ); and
• several battery cells ( 108 ).

Embodiment 2:

Battery device ( 100 ) according to embodiment 1, characterized in that the battery modules ( 102 ) along a stacking direction ( 110 ) are arranged or can be arranged.

Embodiment 3:

Battery device according to embodiment 2, characterized in that the frame elements ( 104 ) of the respective battery modules ( 102 ) Housing sections of the battery device ( 100 ) form.

Embodiment 4:

Battery device according to embodiment 2 or 3, characterized in that longitudinal axes ( 126 ) of the battery cells ( 108 ) of a respective battery module ( 102 ) essentially parallel to the stacking direction ( 110 ) of the battery modules ( 102 ) are arranged.

Embodiment 5:

Battery device according to one of the embodiments 2 to 4, characterized in that the battery cells ( 108 ) Are round cells.

Embodiment 6:

Battery device according to one of the embodiments 2 to 5, characterized in that the battery device ( 100 ) two end bodies ( 164 ), the battery modules ( 102 ) the battery device ( 100 ) preferably between the two end bodies ( 164 ) are arranged.

Embodiment 7:

Battery device according to embodiment 6, characterized in that the two end bodies ( 164 ) Include fastening elements by means of which the battery device ( 100 ) can be fixed on a supporting structure, for example on a supporting structure of a vehicle.

Embodiment 8:

Battery device according to one of the embodiments 2 to 7, characterized in that the battery modules ( 102 ) the battery device ( 100 ) are braced or braced with one another.

Embodiment 9:

Battery device according to one of the embodiments 2 to 8, characterized in that a respective battery module ( 102 ) a sealing element ( 134 ) includes.

Embodiment 10:

Battery device according to one of the embodiments 2 to 9, characterized in that the battery cells ( 108 ) of a respective battery module ( 102 ) on the floor element ( 106 ) of the battery module ( 102 ) are set.

Embodiment 11:

Battery device according to one of the embodiments 2 to 10, characterized in that the frame element ( 104 ) of a respective battery module ( 102 ) a temperature control device ( 137 ) includes or forms.

Embodiment 12:

Battery device according to one of the embodiments 2 to 11, characterized in that individual, several or all battery modules ( 102 ) the battery device ( 100 ) one degassing element each for degassing a receiving space ( 112 ) of the respective battery module ( 102 ) include.

Embodiment 13:

Battery device according to one of the embodiments 2 to 12, characterized in that all battery modules ( 102 ) the battery device ( 100 ) or more than 50% of the battery modules ( 102 ) the battery device ( 100 ) are designed identically.

Embodiment 14:

Battery device according to one of the embodiments 2 to 13, characterized in that a respective battery module ( 102 ) comprises a propagation protection element.

Embodiment 15:

Battery device according to one of the embodiments 2 to 14, characterized in that the battery device ( 100 ) one or more temperature control elements ( 200 ), which are placed between two adjacent battery modules ( 102 ) are arranged.

Embodiment 16:

Battery device according to one of the embodiments 2 to 15, characterized in that the frame element ( 104 ) and / or the floor element ( 106 ) are in particular made in one piece from a metallic material, for example aluminum.

Embodiment 17:

Battery device according to one of the embodiments 2 to 16, characterized in that the frame element ( 104 ) is made of a plastic material and / or that the floor element ( 106 ) is made of a metallic material.

Embodiment 18:

Battery device according to one of the embodiments 2 to 17, characterized in that a respective battery module ( 102 ) includes electrical contacting elements, by means of which two adjacent battery modules ( 102 ) by stacking the battery modules ( 102 ) along the stacking direction ( 110 ) can be connected in series.

Embodiment 19:

Battery device according to one of the embodiments 2 to 18, characterized in that a respective battery module ( 102 ) one or more Spacer elements ( 142 ), by means of which the floor elements ( 106 ) of the battery modules ( 102 ) are arranged or can be arranged essentially parallel to one another.

Embodiment 20:

Battery device according to one of the embodiments 2 to 19, characterized in that a respective battery module ( 102 ) a detection device for detecting the cell voltages of the battery cells ( 108 ) of the battery module ( 102 ) and / or to detect the temperatures of the battery cells ( 108 ) of the battery module ( 102 ) and / or that a respective battery module ( 102 ) a balancer for balancing the battery cells ( 108 ) of the battery module ( 102 ) includes.

Embodiment 21:

Battery device according to one of the embodiments 1 to 20, characterized in that the frame element ( 104 ) of a respective battery module ( 102 ) comprises or is formed from a plastic material.

Embodiment 22:

Battery device according to embodiment 21, characterized in that the frame element ( 104 ) is an injection molded component, in particular a plastic injection molded component.

Embodiment 23:

Battery device according to one of the embodiments 1 to 22, characterized in that the frame element ( 104 ) a double wall ( 120 ), in particular a ring-shaped closed double wall ( 120 ), includes.

Embodiment 24:

Battery device according to embodiment 23, characterized in that the double wall ( 120 ) of the frame element ( 104 ) an inner wall element ( 122 ) and an outer wall element ( 124 ) includes.

Embodiment 25:

Battery device according to embodiment 23 or 24, characterized in that the double wall ( 120 ) of the frame element ( 104 ) a temperature control medium can flow through, in particular parallel to a stacking direction ( 110 ) the battery device ( 100 ).

Embodiment 26:

Battery device according to one of the embodiments 23 to 25, characterized in that the double wall ( 120 ) of the frame element ( 104 ) a temperature control room ( 130 ) of the respective battery module ( 102 ) limited, preferably at least two-sided.

Embodiment 27:

Battery device according to one of the embodiments 1 to 26, characterized in that the frame element ( 104 ) a frame element base body ( 250 ), which is designed in several parts, wherein the frame element base body ( 250 ) in particular several frame element base body parts ( 252 ) includes.

Embodiment 28:

Battery device according to embodiment 27, characterized in that the frame element base body parts ( 252 ) of the frame element body ( 250 ) are positively connected or connectable to one another, wherein the frame element base body parts ( 252 ) preferably one or more form-fitting elements ( 254 ), by means of which the frame element base body parts ( 252 ) can be positively connected to one another.

Embodiment 29:

Battery device according to one of the embodiments 21 to 25, characterized in that the base element ( 106 ) of a respective battery module ( 102 ) one or more openings ( 132 ), which in particular is in a temperature control room ( 130 ) of the battery module ( 102 ) flow.

Embodiment 30:

Battery device according to one of the embodiments 1 to 29, characterized in that a respective battery module ( 102 ) two sealing elements ( 134 ), wherein between the frame element ( 104 ) and the floor element ( 106 ) of the battery module ( 102 ) a first sealing element ( 134 ) is arranged and / or wherein between the frame element ( 104 ) and a floor element ( 106 ) of a neighboring battery module ( 102 ) a second sealing element ( 134 ) is arranged.

Embodiment 31 :

Battery device according to one of the embodiments 1 to 30, characterized in that a respective battery module ( 102 ) one or more spacer elements ( 142 ) includes, by means of which the floor elements ( 106 ) of the battery modules ( 102 ) are arranged or can be arranged essentially parallel to one another.

Embodiment 32:

Battery device according to embodiment 31, characterized in that the one or more spacer elements ( 142 ) of a respective battery module ( 102 ) two sides of the spacer element facing away from each other ( 142 ) arranged contact surfaces ( 146 ), wherein a respective spacer element ( 142 ) with a first contact surface ( 146 ) on the floor element ( 106 ) of the battery module ( 102 ) and the spacer element ( 142 ) with a second contact surface ( 146 ) on the floor element ( 106 ) of a neighboring battery module ( 102 ) is applied or can be applied to this.

Embodiment 33:

Battery device according to embodiment 32, characterized in that the two contact surfaces ( 146 ) a spacer element ( 142 ) of a respective battery module ( 102 ) a distance ( 148 ) from each other, which is essentially one parallel to the stacking direction 110 ) taken height ( 150 ) a wall ( 111 ), especially a double wall ( 120 ) of the battery module ( 102 ) corresponds.

Embodiment 34:

Battery device according to one of the embodiments 31 to 33, characterized in that the spacer elements ( 142 ) of a respective battery module ( 102 ) Bolt elements ( 152 ) or sleeve elements ( 154 ) are.

Embodiment 35:

Battery device according to one of the embodiments 31 to 33, characterized in that a spacer element of a respective battery module ( 102 ) through the frame element ( 104 ) of the battery module ( 102 ) is formed.

Embodiment 36:

Battery device according to one of the embodiments 31 to 34, characterized in that the battery modules ( 102 ) the battery device ( 100 ) by means of the spacer elements ( 142 ) are clamped together or that the battery modules ( 102 ) the battery device ( 100 ) by means of the spacer elements ( 142 ) through clamping elements ( 162 ) are tense.

Embodiment 37:

Battery device according to one of the embodiments 1 to 36, characterized in that the frame element ( 104 ) of a respective battery module ( 102 ) one or more parallel to a stacking direction ( 110 ) the battery device ( 100 ) from the frame element ( 104 ) protruding stacking protrusions ( 168 ) and / or one or more stacking recesses ( 170 ) includes in which stack protrusions ( 168 ) of a frame element ( 104 ) of a neighboring battery module ( 102 ) can be recorded.

Embodiment 38:

Battery device according to one of the embodiments 1 to 37, characterized in that the frame element ( 104 ) of a respective battery module ( 102 ) with the floor element ( 106 ) of the battery module ( 102 ) is non-positively and / or positively connected or connectable, for example clipped.

Embodiment 39:

Battery device according to one of the embodiments 1 to 38, characterized in that the frame element ( 104 ) of a respective battery module ( 102 ) on a peripheral surface of the frame element ( 104 ) a stiffening structure ( 178 ) includes, for example a stiffening rib structure ( 180 ).

Embodiment 40:

Battery device according to one of the embodiments 1 to 39, characterized in that individual or several, in particular all, battery modules ( 102 ) the battery device ( 100 ) are designed identically.

Embodiment 41:

Battery device according to one of the embodiments 1 to 40, characterized in that the base element ( 106 ) of a respective battery module ( 102 ) comprises or is formed from a metallic material and part of an outer surface ( 184 ) the battery device ( 100 ) forms.

Embodiment 42:

Battery device according to embodiment 41, characterized in that the base elements ( 106 ) of the battery modules ( 102 ) perpendicular to a stacking direction ( 110 ) the battery device ( 100 ) at least in sections, for example closed in a ring, over the frame elements ( 104 ) of the battery modules ( 102 ) stick out.

Embodiment 43:

Battery device according to embodiment 41 or 42, characterized in that the battery device ( 100 ) comprises a heat sink and / or a temperature control element, which is equipped with individual or several, preferably with all, base elements 106 ) the battery device ( 100 ) are thermally coupled.

Embodiment 44:

Battery device according to one of the embodiments 41 to 43, characterized in that a respective battery module ( 102 ) also a holding body ( 186 ) to hold the battery cells ( 108 ) of the respective battery module ( 102 ), which is connected to the floor element ( 106 ) of the battery module ( 102 ) is connected, in particular cohesively.

Embodiment 45:

Battery device according to embodiment 44, characterized in that the holding body ( 186 ) of a respective battery module ( 102 ) several receiving openings ( 188 ), in each of which a battery cell ( 108 ) of the battery module ( 102 ) is recorded.

Embodiment 46:

Battery device according to embodiment 44 or 45, characterized in that the holding body ( 186 ) of a respective battery module ( 102 ) a honeycomb structure ( 190 ) or by a honeycomb structure ( 190 ) is formed.

Embodiment 47:

Battery device according to one of the embodiments 44 to 46, characterized in that the holding body ( 186 ) of a respective battery module ( 102 ) to the floor element ( 106 ) of the battery module ( 102 ) is molded on.

Embodiment 48:

Battery device according to one of the embodiments 44 to 47, characterized in that the holding body ( 186 ) is formed in one piece.

Embodiment 49:

Battery device according to one of the embodiments 44 to 48, characterized in that a respective battery module ( 102 ) also a sealing element ( 134 ), especially two sealing elements ( 134 ), which is connected to the floor element ( 106 ) of the battery module ( 102 ) is connected, in particular cohesively.

Embodiment 50:

Battery device according to embodiment 49, characterized in that the two sealing elements ( 134 ) on two opposite sides of the floor element ( 106 ) of a respective battery module ( 102 ) arranged, in particular on the floor element ( 106 ) are molded on.

Embodiment 51:

Battery device according to embodiment 49 or 50, characterized in that the sealing element ( 134 ) a first sealing section ( 136 ) and a second sealing section ( 138 ) includes.

Embodiment 52:

Battery device according to one of the embodiments 41 to 51, characterized in that the battery cells ( 108 ) of a respective battery module ( 102 ) thermally with the floor element ( 106 ) of the battery module ( 102 ) are coupled.

Embodiment 53:

Battery device according to one of the embodiments 41 to 52, characterized in that the base element ( 106 ) of a respective battery module ( 102 ) comprises one or more temperature control channels, for example a temperature control channel structure.

Embodiment 54:

Battery device according to one of the embodiments 41 to 53, characterized in that the base element ( 106 ) of a respective battery module ( 102 ) is a hybrid component, in particular a metal-elastomer hybrid component.

Embodiment 55:

• - Bereitstellen eines Lagenelements (212);
• - Bereitstellen mehrerer Batteriezellen (108);
• - Fixieren der Batteriezellen (108) in dem Lagenelement (212) durch insbesondere plastisches Verformen des Lagenelements (212).

Procedure for fixing battery cells ( 108 ), the method comprising:

• - Provision of a layer element ( 212 );
• - Provision of several battery cells ( 108 );
• - fixing the battery cells ( 108 ) in the layer element ( 212 ) by in particular plastic deformation of the layer element ( 212 ).

Embodiment 56:

Method according to embodiment 55, characterized in that the battery cells ( 108 ) in the layer element ( 212 ) by heating the layer element ( 212 ) and / or by subsequent cooling of the layer element ( 212 ) are fixed.

Embodiment 57:

Method according to embodiment 55 or 56, characterized in that the layer element ( 212 ) is plastically deformed by heating or that the layer element ( 212 ) is heated and the heated layer element ( 212 ) is then plastically deformed.

Embodiment 58:

Method according to embodiment 56 or 57, characterized in that the layer element ( 212 ) is cooled down after heating.

Embodiment 59:

Method according to one of the embodiments 55 to 58, characterized in that the layer element ( 212 ) on the battery cells ( 108 ) is shrunk on.

Embodiment 60 :

Method according to one of the embodiments 55 to 59, characterized in that the battery cells ( 108 ) before fixing them in the layer element ( 212 ) are aligned relative to each other, in particular using a tool ( 214 ).

Embodiment 61:

Method according to embodiment 60, characterized in that the battery cells ( 108 ) are initially aligned parallel to each other and / or in a predetermined pattern.

Embodiment 62:

Method according to embodiment 61, characterized in that one or more battery cells ( 108 ) after parallel alignment and / or after alignment in a given pattern parallel to a longitudinal axis ( 126 ) of the battery cells ( 108 ) are moved.

Embodiment 63:

Method according to embodiment 62 , characterized in that single or multiple battery cells ( 108 ) so far parallel to a longitudinal axis ( 126 ) of the battery cells ( 108 ) are moved so that base areas ( 238 ) of all battery cells ( 108 ) are arranged essentially in a single plane.

Embodiment 64:

• ein Rahmenelement (104);
• ein Bodenelement (106); und
• mehrere Batteriezellen (106),
• wobei die Batteriezellen (108) durch das Verfahren gemäß einer der Ausführungsformen 55 bis 63 in einem Lagenelement (212) fixiert sind und
• wobei das Lagenelement (212) und die in dem Lagenelement (212) fixierten Batteriezellen (108) an dem Bodenelement (106) des Batteriemoduls (102) festgelegt sind.

Battery device ( 100 ), the battery device ( 100 ) one or more battery modules ( 102 ), with a respective battery module ( 102 ) Includes:

• a frame element ( 104 );
• a floor element ( 106 ); and
• several battery cells ( 106 ),
• where the battery cells ( 108 ) by the method according to one of the embodiments 55 to 63 in a layer element ( 212 ) are fixed and
• where the layer element ( 212 ) and those in the layer element ( 212 ) fixed battery cells ( 108 ) on the floor element ( 106 ) of the battery module ( 102 ) are set.

Claims (15)

Battery device (100), wherein the battery device (100) comprises one or more battery modules (102), wherein a respective battery module (102) comprises: a frame member (104); a floor element (106) and several battery cells (108), wherein the frame element (104) comprises a double wall (120), in particular an annularly closed double wall (120). Battery device according to Claim 1 , characterized in that the frame element and / or the floor element are made of a metallic material, for example aluminum. Battery device according to Claim 1 or 2 , characterized in that the double wall (120) of the frame element (104) comprises an inner wall element (122) and an outer wall element (124). Battery device according to one of the Claims 1 to 3 , characterized in that a temperature control medium can flow through the double wall (120) of the frame element (104), in particular parallel to a stacking direction (110) of the battery device (100). Battery device according to one of the Claims 1 to 4th , characterized in that the double wall (120) of the frame element (104) delimits a temperature control space (130) of the respective battery module (102), preferably at least on two sides. Battery device according to one of the Claims 1 to 5 , characterized in that the frame element (104) comprises a frame element base body (250) which is constructed in several parts is, wherein the frame element base body (250) in particular comprises a plurality of frame element base body parts (252). Battery device according to Claim 6 , characterized in that the frame element base body parts (252) of the frame element base body (250) are positively connected or connectable to one another, the frame element base body parts (252) preferably each comprising one or more form-locking elements (254) by means of which the frame element base body parts (252) can be positively connected to one another . Battery device according to one of the Claims 1 to 7th , characterized in that the base element (106) of a respective battery module (102) comprises one or more passage openings (132), which in particular open into a temperature control space (130) of the battery module (102). Battery device according to one of the Claims 1 to 8th , characterized in that a respective battery module (102) comprises two sealing elements (134), a first sealing element (134) being arranged between the frame element (104) and the base element (106) of the battery module (102) and / or wherein between the Frame element (104) and a base element (106) of an adjacent battery module (102) a second sealing element (134) is arranged. Battery device according to one of the Claims 1 to 9 , characterized in that a respective battery module (102) comprises one or more spacer elements (142), by means of which the base elements (106) of the battery modules (102) are arranged or can be arranged essentially parallel to one another. Battery device according to Claim 10 , characterized in that the one or more spacer elements (142) of a respective battery module (102) each comprises two contact surfaces (146) arranged on opposite sides of the spacer element (142), a respective spacer element (142) having a first contact surface ( 146) rests against the bottom element (106) of the battery module (102) and wherein the spacer element (142) rests or can be placed against the bottom element (106) of an adjacent battery module (102) with a second contact surface (146). Battery device according to Claim 10 or 11 , characterized in that a spacer element of a respective battery module (102) is formed by the frame element (104) of the battery module (102). Battery device according to one of the Claims 1 to 12th , characterized in that the frame element (104) of a respective battery module (102) has one or more stacking projections (168) and / or one or more stacking recesses that project parallel to a stacking direction (110) of the battery device (100) from the frame element (104) (170), in which stacking projections (168) of a frame element (104) of an adjacent battery module (102) can be received. Battery device according to one of the Claims 1 to 13 , characterized in that the frame element (104) of a respective battery module (102) is connected or can be connected to the base element (106) of the battery module (102) in a non-positive and / or positive manner, for example clipped. Battery device according to one of the Claims 1 to 14th , characterized in that individual or several, in particular all, battery modules (102) of the battery device (100) are of identical design.

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