DE102012023316A1 - Battery e.g. lithium ion battery for supplying power to vehicle drive, has recesses and/or projections that are located on lateral surface, to increase turbulence of temperature control fluid adjacent to recesses and/or projections - Google Patents

Abstract

The battery has electrochemical energy storage devices (12,12a) and tempering device (11) for exchanging heat with energy storage devices. A parallelepiped-shaped main portion (1) is provided for heat-conductive connection with energy storage devices. A fluid channel (6) has lateral surface (15), which is guided partially through main portion for guiding a flowing temperature control fluid along a main flow direction. The recesses (7) and/or projections are located on lateral surface, to increase the turbulence of temperature control fluid adjacent to recesses and/or projections. Independent claims are included for the following: (1) a method for preparing tempering device; and (2) a method for operating tempering device.

Description

The present invention relates to a battery with a tempering device. The invention will be described in the context of lithium-ion batteries for powering vehicle drives. It should be noted, however, that the invention may also be applied regardless of the type of battery and regardless of the type of consumer supplied.

Rechargeable batteries with multiple, interconnected, electrochemical energy storage devices, also referred to as cells below, are used today in large numbers. A widespread problem of these batteries is the lack of cycle stability, i. H. that with increasing operating time, the energy that can be removed from the battery decreases. This is due to the fact that areas of the battery that are no longer available for the conversion of energy due to irreversible chemical reactions increase. One speaks in this context of passivated areas of the battery. It is known that higher temperatures during operation of a battery favor the increase of passivated regions, especially in the cells. It may happen that some of the interconnected cells age more than the others, which reduces the battery's charge capacity too quickly.

The invention is therefore based on the object to improve the service life of a battery with at least two electrochemical energy storage devices.

The object is achieved by a battery according to claim 1. The object is further achieved by a method according to claim 11. Preferred developments of the invention are the subject of the dependent claims.

The battery according to the invention has a plurality of electrochemical energy storage devices and at least one tempering device. The at least one tempering device is designed for heat exchange with at least one, two or more, in particular adjacent, of these electrochemical energy storage devices. The at least one tempering device has a, in particular substantially cuboid, base body, which is designed for heat-conducting connection with at least one of these energy storage devices. The tempering device has at least one fluid channel, which is guided at least in sections through the base body. The fluid channel is for guiding a flowing tempering fluid, in particular along a main flow direction r → _S , configured and has at least a first lateral surface. The tempering device has a plurality of recesses and / or projections, which are arranged on the first lateral surface. In particular, the depressions and / or projections are designed to increase the turbulence of the tempering fluid, in particular at least adjacent to the depressions and / or projections.

It has been observed that with higher turbulence the heat exchange between the tempering fluid and the first lateral surface is improved. As a result, a greater heat output can be transmitted between the tempering fluid and the first lateral surface.

In particular, the tempering device is configured to dissipate heat energy or heat output from an adjacent energy storage device, with which the tempering is thermally conductively connected, in particular when a temperature of the main body or the energy storage device exceeds a minimum temperature.

With the tempering heat energy or heat output from one of these energy storage devices, which is thermally conductively connected to the tempering, be dissipated. In order for a temperature increase of the energy storage device is met, in particular, the temperature of the energy storage device can be reduced. With lower temperatures during operation of the energy storage device, irreversible chemical reactions that can lead to passivation of regions of the electrochemical energy storage device can be reduced. Thus, the ability of the energy storage device or the battery to provide electrical energy over a longer period is obtained. This solves the underlying task.

Under a battery according to the invention is a device to understand, which is used in particular the electrical supply of a consumer. The battery is configured to provide at least temporary electrical energy. The battery is configured to at least temporarily absorb and store electrical energy. The battery has a plurality, but at least two, electrochemical energy storage devices. For electrical connection to a consumer to be supplied, the battery has two battery terminals of different electrical polarity. At least temporarily, the electrical voltage of the, in particular interconnected, energy storage devices is applied to these battery terminals.

An electrochemical energy storage device in the sense of the invention means a device which in particular serves to provide electrical energy. For this purpose, the electrochemical energy storage device is configured to convert stored chemical energy into electrical energy, and then to provide this electrical energy to a consumer. The energy storage device is configured to convert supplied electrical energy into chemical energy and to store it as chemical energy. The energy storage device has two current conductors of different polarity, at which an electrical voltage of the energy storage device can be tapped off. The current conductors serve for the electrical connection, in particular interconnection, with at least one further, in particular adjacent, energy storage device and / or at least indirectly the electrical connection with the consumer. Preferably, the energy storage device is formed substantially cuboid.

A tempering device in the sense of the invention is to be understood as meaning a device which is designed in particular for heat exchange with at least one, two or more, in particular adjacent, energy storage devices which are in particular for conducting a heat flow between at least one, two or more of these energy storage devices and the Tempering fluid is configured.

In the context of the invention, a basic body is to be understood as a device which is configured in particular for the heat-conducting connection with one, two or more of these energy storage devices. The main body is designed in particular for conducting a heat flow between at least one of these energy storage devices and the tempering fluid. The base body is configured to receive the fluid channel at least in sections, preferably substantially completely. The main body has at least one or more first lateral surfaces, which are each designed to limit the fluid channel. The at least one first lateral surface faces the fluid channel. The at least one first lateral surface is configured to guide the tempering fluid. Preferably, the base body has one or more second lateral surfaces, which are each designed for heat-conducting contact or connection with one of these energy storage devices.

A fluid channel in the sense of the invention is to be understood as meaning a device which serves in particular for guiding a temperature-controlling fluid flowing at least temporarily. For this purpose, the fluid channel has a volume permeable to the tempering fluid, wherein the volume of one of these first lateral surfaces is limited. The flowing tempering fluid can flow through said volume and along the first lateral surface, the first lateral surface holding the tempering fluid in the fluid channel. At least in sections, this main flow direction r → _p or the direction of the time-averaged flow velocity v → _T of the tempering fluid arranged substantially perpendicular to the first lateral surface. The fluid channel extends in particular along a channel longitudinal axis. Preferably, the main flow direction or the direction of the time-averaged flow velocity of the tempering fluid essentially corresponds to the channel longitudinal axis. The fluid channel is at least partially absorbed by the main body.

A tempering fluid in the sense of the invention is to be understood as meaning a fluid which in particular serves for the exchange, in particular the supply or removal, of heat energy or heat output with one of these energy storage devices. For this purpose, the tempering fluid has a different temperature from the energy storage device. In particular for cooling the energy storage device, the tempering fluid has a lower temperature than the energy storage device when entering the fluid channel. For the cooling of the energy storage device, the tempering fluid preferably has a lower temperature than the main body when it enters the fluid channel. In particular for heating the energy storage device, the tempering fluid has a higher temperature than the energy storage device when entering the fluid channel. The tempering fluid is provided to be conveyed at least temporarily by an independent fluid conveying device through the fluid channel. At least in sections, the largest velocity component of the tempering fluid is arranged substantially perpendicular to the channel longitudinal axis. Preferably, water, a thermal oil, a synthetic heat transfer oil, gases such as in particular helium or air can be used as tempering. Preferably, a refrigerant can be used, wherein particularly preferably the temperature control device can act in accordance with an evaporator.

Under a depression in the context of the invention is a device to understand, which serves in particular to locally increase the turbulence of the tempering. For this purpose, the recess is arranged on the first lateral surface, in particular introduced into the first lateral surface. In particular, the depression extends from the base body into the fluid channel. In particular, the depression extends substantially perpendicularly to the first lateral surface, channel longitudinal axis or main flow direction into the main body, in particular along it a pit axis. Preferably, the extent of such a depression along the recess axis is small in comparison to, in particular hydraulic, diameter of the fluid channel. It has been observed that even a slight depression, in particular locally, can increase or trigger the turbulence of the tempering fluid in the fluid channel, in particular in that the tempering fluid flows through the recess and leaves the recess with a minimum angle to the channel longitudinal axis or main flow direction. This is accompanied by an improvement in the heat exchange between the tempering fluid and the energy storage device or an increased transferable heat output. Also goes with the small extent or depth of the depression associated with a lower pressure loss in Temperierfluid.

Under a projection in the context of the invention is a device to understand, which serves in particular to locally increase the turbulence of the tempering. For this purpose, the projection is arranged on the first lateral surface, in particular introduced into the first lateral surface. In particular, the projection extends from the main body into the fluid channel. In particular, the projection extends substantially perpendicular to the first lateral surface, channel longitudinal axis or main flow direction into the tempering fluid, in particular along a projection axis. Preferably, the extent of such a projection along the projection axis is small compared to, in particular hydraulic, diameter of the fluid channel. It has been observed that even a small projection, in particular locally, can increase or trigger the turbulence of the tempering fluid in the fluid channel, in particular in that the tempering fluid flows along the projection and passes the projection at a minimum angle to the channel longitudinal axis or main flow direction. This is accompanied by an improvement in the heat exchange between the tempering fluid and the energy storage device or an increased transferable heat output. Also goes with the small extent or height of the projection associated with a lower pressure drop in the tempering.

Hereinafter, preferred developments of the invention will be described.

According to a preferred development, the at least one first lateral surface is formed by a lateral surface of the main body. At the same time, the at least one first lateral surface forms a boundary of the fluid channel which is impermeable to the tempering fluid. This preferred development offers the advantage that the manufacture of the tempering device is simplified. This preferred development offers the advantage that an undesired relative movement of the recesses and / or projections with respect to the main body is encountered.

According to a preferred development, the flow velocity of the tempering fluid is at least at times, in particular at a predetermined minimum temperature difference between the tempering fluid and the energy storage device, so high that the tempering fluid flows turbulently along the fluid channel or its first lateral surface. This preferred development offers the advantage that the transmittable heat output between the tempering fluid and the energy storage device is increased.

According to a preferred embodiment, the battery has a battery housing for receiving the energy storage devices and one or more of these tempering. The battery housing may preferably exert a force on the recorded energy storage devices and the temperature control devices in such a way that the heat-conducting connection between at least one or more of these energy storage devices and at least one or more of these temperature control devices is improved. This preferred development offers the advantage that the cohesion of the energy storage devices during operation of the battery is improved.

According to a preferred development, the battery has a multiplicity of these energy storage devices and a plurality of these temperature control devices, which are accommodated in particular by the battery housing. This preferred development offers the advantage that the charge capacity of the battery and / or the electrical voltage that can be supplied by the battery can be greater.

According to a preferred development, the battery has a control device which can control and in particular monitor the operation of the energy storage devices, in particular charging and / or discharging operations. Preferably, the control device is designed to receive at least one measured value or display value of at least one temperature sensor, particularly preferably to process. Preferably, the battery has a conveying device for the tempering fluid, wherein the conveying device can be controlled by the control device, in particular as a function of the aforementioned measured value or display value. This preferred development offers the advantage that the temperature of one of these energy storage devices can be monitored and controlled during operation of the battery.

According to a preferred embodiment, the base body with aluminum, copper or a Alloy formed with at least one or both of these metals, in particular for the highest possible heat conduction or transferable heat output between the tempering fluid and the energy storage device.

According to a preferred development, the at least one fluid channel, in particular along a linear channel axis, extends between opposite lateral surfaces of the main body, wherein these opposite lateral surfaces are different from the second lateral surfaces. If the fluid channel extends linearly between opposing lateral surfaces of the main body and in particular the tempering fluid is not repeatedly passed along the first lateral surface, a minimum temperature difference .DELTA.T between the tempering fluid and the first lateral surface at the end of the fluid channel can be maintained. This preferred development has the advantage that the heat exchange between the base body and the tempering fluid is improved.

According to a preferred embodiment, the base body with at least one, preferably two, of these energy storage devices is thermally conductive connectable. Preferably, the at least one tempering device can be arranged between two of these energy storage devices. This preferred development offers the advantage that two of these energy storage devices can be tempered simultaneously with the same tempering device.

According to a preferred embodiment, the battery has a plurality of first arrangements. This first arrangement has two of these energy storage devices and one of these tempering. The tempering arranged between the two energy storage devices and thermally conductively connected to these energy storage devices. Preferably, two, four or more of these first arrangements are arranged adjacent to one another, in particular in the battery housing. Preferably, the energy storage devices are interconnected. This preferred development offers the advantage that two of these energy storage devices can be tempered simultaneously with the same tempering device.

According to a preferred embodiment, the battery has a plurality of second arrangements. The second arrangement has one of these energy storage devices and one of these temperature control devices. The tempering arranged adjacent to the energy storage device and connected to the energy storage device thermally conductive. Preferably, two, four or more of these second arrangements are adjacent to one another, in particular in the battery housing. Preferably, the energy storage devices are interconnected. This preferred development offers the advantage that one of these energy storage devices can be tempered simultaneously by two of these tempering devices.

According to a preferred development, at least some of these recesses and / or projections each correspond at least substantially to a body of the following group, which includes: a spherical section, a section of an ellipsoid, cone, truncated cone, conical section, pyramid, truncated pyramid, pyramid section, cylinder. Preferably, at least some of these recesses and / or projections each correspond at least substantially to a spherical section, a cone or a pyramid. Preferably, at least some of these projections are at least substantially spherical. Thus, a stamp, which is provided for producing the depressions and / or projections with "negatives" of the recesses and / or projections, can be used. This preferred development offers the advantage of lower manufacturing costs.

According to a preferred refinement, some or more of these depressions and / or projections are in each case spherical, in particular corresponding to a spherical segment. Here, some or more of these depressions and / or projections on the surface of the first lateral surface have an extension or a diameter d _v and perpendicular to the first lateral surface a greatest depth or height s _v . Preferably s _v / d _v <0.5 more preferably less than 0.4, more preferably less than 0.2, more preferably less than 0.1, more preferably less than 0.05, more preferably greater than 0.01, even more preferably about 0.2. Particularly preferably, the recesses and / or projections have a diameter of about 5 mm at a depth of about 1 mm. This preferred development offers the advantage that the pressure loss which the tempering fluid experiences along the fluid channel is reduced.

According to a preferred refinement, a plurality of these depressions and / or projections are arranged in a row, preferably in a plurality of rows, in particular parallel to one another. Preferably, a plurality of these recesses and / or projections are arranged according to a matrix.

Preferably, the diameter of a plurality of these recesses and / or projections depending on the width of the fluid channel. Preferably, the diameter of a plurality of these recesses and / or projections is up to 5% of the width of the fluid channel. Preferably, with a width of the fluid channel of about 140 mm across the width, about 10 of these recesses and / or protrusions are arranged in a row. Preferably, the distance between the recesses and / or projections along the width of the fluid channel is at least twice the diameter of these recesses and / or projections. Preferably, the distance between the recesses and / or projections in the flow direction is at least twice the diameter of these recesses and / or projections. Preferably, the distance of the recesses and / or projections along the width of the fluid channel corresponds to the distance of the recesses and / or projections in the flow direction.

This preferred development offers the advantage that it is possible to influence the increase in turbulence in the tempering fluid in a targeted manner.

Alternatively, a plurality of these depressions and / or projections are arranged irregularly on the first lateral surface. Thus, loose and geometric indeterminate bodies, in particular grains of sand, can be used to produce the depressions and / or projections. This preferred development offers the advantage of lower manufacturing costs.

According to a preferred development, at least some of these depressions and / or projections are geometrically indefinite. This preferred development offers the advantage that the production of the recesses and / or projections can be simplified with geometrically indefinite bodies, in particular granules preferably made of sand, which are pressed at least partially into the first lateral surface, and in particular subsequently removed again.

According to a preferred development, a plurality of these depressions and / or projections cover at least 10% of the first lateral surface, in particular of the heat exchange section described below, more preferably more than 20%, more preferably more than 30%, more preferably more than 40%, more preferably more than 50%, more preferably more than 60%, more preferably less than 90% of the first lateral surface, in particular of the heat exchange section described later. This preferred development has the advantage that the heat exchange between the tempering fluid and the base body is improved. This preferred development offers the advantage that the pressure loss which the tempering fluid experiences along the fluid channel is limited.

According to a preferred development, the fluid channel, in particular transversely to the main flow direction, has a substantially cylindrical cross-sectional area. Preferably, the fluid channel has a substantially hollow cylindrical shape. Preferably, the fluid channel is formed as a single hollow cylinder whose inner circumferential surface forms the first lateral surface of the fluid channel. This preferred development has the advantage that the fluid channel can be adapted to the shape of the base body. This preferred development offers the advantage that the fluid channel can be adapted to the manufacturing process for the tempering device. This preferred development has the advantage that the manufacturing costs for the fluid channel or the tempering device are reduced. This preferred development offers the advantage that the fluid channel can be produced by a machining process, in particular by drilling or broaching. This preferred development has the advantage that a plurality of these fluid channels can be arranged side by side in a cuboid base body.

According to a preferred development, the fluid channel, in particular transversely to the main flow direction, has a substantially rectangular cross-sectional area. Preferably, the substantially rectangular fluid channel is bounded by a plurality of these first lateral surfaces. Preferably, the fluid channel has a substantially cuboid shape. Preferably, the fluid channel is formed as a single cavity of substantially parallelepiped shape. Particularly preferably, one or more corners or edges of the substantially cuboidal fluid channel are rounded, in particular for lower production costs, in particular for lower pressure loss of the tempering fluid along the fluid channel. This preferred development has the advantage that the fluid channel can be adapted to the shape of the base body. This preferred development offers the advantage that the fluid channel can be adapted to the manufacturing process for the tempering device. This preferred development has the advantage that the manufacturing costs for the fluid channel or the tempering device are reduced. This preferred development offers the advantage that the fluid channel can be produced by a machining process, in particular by milling or broaching.

According to a preferred development, the tempering device is configured with a substantially cuboid main body for heat-conducting connection with at least one of these, in particular parallelepipedic, energy storage devices, and a plurality of independent ones of these cylindrical fluid channels, which are substantially parallel to one another in the main body are arranged and extend along the base body. This preferred development offers the advantage of lower manufacturing costs. This preferred development offers the advantage that the fluid channel can be produced by a machining process, in particular by drilling or broaching. This preferred development has the advantage that a plurality of these fluid channels can be arranged side by side in a cuboid base body.

According to a preferred development, the tempering device is configured with a substantially cuboid base body for heat-conducting connection with at least one of these, in particular cuboid, energy storage devices, and one or more of these cuboidal fluid channels, which extend along the base body. This preferred development offers the advantage of lower manufacturing costs.

According to a preferred embodiment, the base body is formed with two base plates. The at least one fluid channel is arranged between these two base plates. At least one of these base plates, in particular one of its second lateral surfaces, is designed for heat-conducting connection with at least one of these energy storage devices. At least one of these base plates has a plurality of these recesses and / or projections and in particular the first lateral surface. As a result, the first lateral surface of the fluid channel becomes more accessible during production, in particular before connecting the base plates. This preferred development offers greater freedom in the production of the fluid channel, in particular the recesses and / or projections. This preferred development offers the advantage of lower manufacturing costs. This preferred development has the advantage that the base plates can be inexpensively made of commercially available metal plates or standards. This preferred development has the advantage that the thermal resistance of the base plate, which limits heat exchange between the energy storage device and the tempering fluid, is reduced. This preferred development offers the advantage that the heat flow between the energy storage device and the tempering fluid is increased.

According to a preferred embodiment, the base plates are formed substantially rectangular. Preferably, these base plates are thin-walled, ie with a small wall thickness W _G in the direction of, in particular idealized one-dimensional, heat flow between the energy storage device and the tempering fluid. Preferably, the length L _G , substantially in the main flow direction, and the width B _G , substantially perpendicular to the main flow direction and to the wall thickness, of these base plates are dimensioned to be significantly greater than their wall thickness W _G. Preferably L _G / W _G > 5 and B _G / W _G > 5

This preferred development has the advantage that the heat exchange between the base body and the tempering fluid is improved. This preferred development offers the advantage that the thermal resistance, which provides the base plate with a heat flow between the tempering fluid and the energy storage device, is reduced. This preferred development has the advantage that the base plates can be inexpensively made of commercially available metal plates or standards. This preferred development has the advantage that the thermal resistance of the base plate, which limits heat exchange between the energy storage device and the tempering fluid, is reduced. This preferred development offers the advantage that the heat flow between the energy storage device and the tempering fluid is increased.

According to a preferred refinement, the essentially cuboid-shaped fluid channel extends along the base plate with a width B _F B _F / B _G , <1 more preferably greater than 0.5, more preferably greater than 0.6, more preferably greater than 0.7, more preferably greater than 0.8, more preferably greater than 0.9. Thus, the fluid flow from a supply line along the substantially rectangular base plates be spread for the largest possible area for heat exchange with the base plate or the energy storage device. This preferred development has the advantage that the area for the heat exchange between the main body and the tempering fluid is increased. This preferred development has the advantage that the heat exchange between the base body and the tempering fluid is improved.

According to a preferred development, one, two, three, four, five, six or more, essentially hollow-cylindrical, of these fluid channels each extend along the base plate with a width B _F B _F / B _G , <0.5 more preferably less than 0.4, more preferably less than 0.2, more preferably less than 0.1, more preferably less than 0.05, more preferably less than 0.02, even more preferably less than 0.01, more preferably greater than 0.001. Thus, the fluid flow from a supply line along the base plates can be spread for the largest possible area for heat exchange with the base plate or the energy storage device. This preferred development has the advantage that the area for the heat exchange between the main body and the tempering fluid is increased. This preferred development has the advantage that the heat exchange between the base body and the tempering fluid is improved.

According to a preferred development, the at least one fluid channel with a length L _F extends along the base plate with L _F ≈ L _G. By the fluid channel is no longer than the base body or the base plate and in particular the tempering is not repeatedly performed along the first lateral surface, a minimum temperature difference .DELTA.T between Temperierfluid and first lateral surface at the end of the fluid channel is maintained. This preferred development has the advantage that the heat exchange between the base body and the tempering fluid is improved.

According to a preferred embodiment, one or both of these base plates are each formed with a, in particular deep-drawn, thin-walled metal sheet. Preferably, the depressions and / or projections are produced by means of a forming process, in particular by means of pressing or deep-drawing. This preferred development has the advantage that the production of the base plates is simplified. This preferred development offers the advantage that the heat flow between the energy storage device and the tempering fluid is increased. This preferred development has the advantage that the base plates can be inexpensively made of commercially available metal sheets. This preferred development has the advantage that the thermal resistance of the base plate, which limits heat exchange between the energy storage device and the tempering fluid, is reduced. This preferred development offers the advantage that the heat flow between the energy storage device and the tempering fluid is increased.

Preferably, at least one of these base plates is formed with at least one raised edge for connection to the other of these base plates. Preferably, at least one of these base plates is made of a continuous casting profile with at least one raised edge. The at least one raised edge allows a particularly simple design of the fluid channel. At least one or two of these raised edges allow a particularly simple spacing of the other of these two base plates. This preferred embodiment offers the advantage of lower manufacturing costs. The raised edge allows the control of the tempering within the body, in particular to avoid flowed through with reduced flow rate areas in the body or areas resting tempering. This preferred embodiment has the advantage that the heat exchange between the tempering fluid and the first lateral surface is improved.

According to a preferred development, the fluid channel has a feed section and a heat exchange section. The heat exchange section has a plurality of these depressions and / or projections. The feed section is configured to increase the flow velocity of the tempering fluid in the direction of the heat exchange section, in particular for improved heat exchange with the energy storage device. Preferably, the feed section has a, in particular substantially rectangular, inlet surface for the tempering fluid and an outlet surface. Preferably, the entrance surface is formed larger than the exit surface, wherein the exit surface faces the heat exchange section. Preferably, the feed section has a substantially truncated pyramidal or prismatic shape. This preferred development offers the advantage that the heat exchange between the tempering fluid and the base body is improved, particularly in the heat exchange section, due to the increased flow rate.

According to a preferred embodiment, the length of the feed section L _{Z is} greater than the length of the heat exchange section L _W , further preferred L _Z / L _W <0.5 more preferably less than 0.2, more preferably less than 0.1, more preferably less than 0.05, more preferably less than 0.02, even more preferably greater than 0.01. Thus, the heat exchange section or the depressions and / or projections can make up as much of the fluid channel or the first lateral surface as possible. This preferred development has the advantage that the heat exchange between the tempering fluid and the base body is improved.

According to a preferred development, the fluid channel has a discharge section, which adjoins the heat exchange section, which serves to delay the tempering fluid, in particular in the direction of the later-mentioned channel connection device. Preferably, the discharge section has a, in particular substantially rectangular, inlet surface for the tempering fluid and an exit surface. Preferably, the entrance surface is smaller than the Outlet surface formed, wherein the inlet surface faces the heat exchange section.

According to a preferred development, the tempering device has a duct connection device, which can be connected to an independent, essentially cylindrical, fluid supply line. The duct connection device is designed to divert the tempering fluid out of the fluid supply line by more than 45 °, preferably by approximately 90 °, into the fluid duct. The duct connection device preferably has a substantially cylindrical inlet surface, which is adapted in particular to the cross section of the fluid supply line, and a substantially rectangular exit surface. The outlet surface faces the fluid channel, in particular the feed section, and allows passage of the tempering fluid into the fluid channel. Preferably, the channel connection device can be connected to the inlet surface of the feed section. Thus, the fluid flow from an independent, in particular commercially available, in particular cylindrical, fluid supply along the substantially rectangular base plates, in particular along the substantially cuboidal fluid channel, be spread for the largest possible area for heat exchange with the base plate and the energy storage device. This preferred development has the advantage that the heat exchange between the tempering fluid is improved, especially in the heat exchange section due to the increased flow rate.

According to a preferred development, the duct connection device is designed with an elongate body. The duct connection device is formed with a substantially cylindrical inlet element for connection to a substantially cylindrical fluid supply line. Adjoining the inlet element is a partially hollow distribution element, which extends along the main body, which is open towards the fluid channel and the inlet element. In the distribution element, a spreading of the tempering fluid takes place in the fluid channel. Preferably, the distribution element is thinner than the base body plus adjacent energy storage device, particularly preferably thinner than the main body. Preferably, the distribution element is thin-walled, in particular with a metal sheet formed. This preferred development has the advantage that space can be saved.

According to a preferred development, the tempering device also has one of these duct connection devices at the outlet of the fluid duct. This further channel connection device serves to deflect the tempering fluid into an independent fluid return line. This preferred development has the advantage that commercially available tubes can be used for removing the tempering fluid into or out of the fluid channel.

According to a preferred development, the tempering device has at least one temperature sensor, designed in particular as a thermocouple, which is configured to detect a temperature of the main body or of an energy storage device connected in a heat-conducting manner to the main body, which is designed to provide a display value proportional to the detected temperature. Preferably, the temperature sensor is arranged on or adjacent to a second lateral surface of the base body, which is configured for heat-conducting connection with the energy storage device. Thus, an independent fluid delivery device for the tempering fluid can be switched on, in particular by an independent control device, in particular if the display value exceeds a predetermined first limit value or if the display value falls below a predetermined second limit value. Thus, on the basis of the display value, the inlet temperature of the tempering fluid can be adjusted when entering the fluid channel, in particular by an independent control device. This preferred development has the advantage that the heat output to be transmitted can be adapted to the temperature of the energy storage device.

In a preferred embodiment of the battery, the base body is formed with two substantially rectangular base plates, in particular made of aluminum, copper or an alloy with at least one or both of these metals. One or both of these base plates have the second lateral surface for heat-conducting connection with one of these energy storage devices. One or both of these base plates have raised edges for connecting the base plates to one another and in particular for guiding the tempering fluid. One or both of these base plates have the first lateral surface. The fluid channel extends between these base plates. The fluid channel has this heat exchange section, preferably this feed section, preferably this discharge section. One or both of these base plates or their first lateral surface have numerous of these depressions and / or projections, preferably depressions. The depressions and / or projections are distributed over the second lateral surface or the heat exchange section and in particular arranged to form a matrix on the second lateral surface. Alternatively, the recesses and / or projections are arranged distributed in a plurality of mutually offset rows over the entire width of the fluid channel on at least one of the base plates. Two of these duct connection devices are connected to the main body for deflecting the tempering fluid out of the main body independent fluid supply line and in the independent fluid return line.

This preferred embodiment has the advantage that with the duct connection device in front of the base body, the heat exchange is improved by the tempering fluid being spread over at least one of these base plates. This preferred embodiment offers the advantage of lower manufacturing costs. This preferred embodiment offers the advantage that the first lateral surface can be provided with the depressions and / or projections with little effort before the base plates are connected. This preferred embodiment has the advantage that regions with a significantly lower flow velocity of the tempering fluid can be avoided. This preferred embodiment has the advantage that at the same time two of these energy storage devices can be tempered with the tempering. This preferred embodiment offers the advantage that conventional cylindrical conduits can be used as fluid supply line and fluid return line. This preferred embodiment offers the advantage that with the feed section the heat exchange in the heat exchange section is improved.

According to a preferred development, at least a plurality of these depressions and / or projections of the preferred embodiment are formed as spherical sections or spherical. This preferred development offers the advantage of a particularly low pressure loss in the tempering fluid.

According to a preferred refinement, the at least one of these base plates of the preferred embodiment has one of these temperature sensors. The temperature sensor is preferably arranged adjacent to, particularly preferably in, the first or second lateral surface. This preferred development offers the advantage that an independent control device can influence the temperature and / or flow rate of the tempering fluid, in particular for increased heat exchange with one of these energy storage devices.

According to a preferred embodiment, the diameter of a plurality of these recesses and / or projections depends on the width of the fluid channel. Preferably, the diameter of a plurality of these recesses and / or projections is up to 5% of the width of the fluid channel. Preferably, with a width of the fluid channel of about 140 mm across the width, about 10 of these recesses and / or protrusions are arranged in a row. Preferably, the distance between the recesses and / or projections along the width of the fluid channel is at least twice the diameter of these recesses and / or projections. Preferably, the distance between the recesses and / or projections in the flow direction is at least twice the diameter of these recesses and / or projections. Preferably, the distance of the recesses and / or projections along the width of the fluid channel corresponds to the distance of the recesses and / or projections in the flow direction.

Preferably, s _v / d _{v is} about 0.2. Particularly preferably, the recesses and / or projections have a diameter of about 5 mm at a depth of about 1 mm.

For producing the tempering device, in particular of a plurality of depressions on one of these first lateral surfaces of one of these basic bodies, in particular on one of these first lateral surfaces of one of these fluid channels, the preferred method described below is to use a forming tool with an arrangement of "negatives" to these depressions and / or or protrusions can be used. The depressions and / or projections can be produced by stamping or embossing the first lateral surface with this shaping tool (step S1). This preferred method offers the advantage of lower production costs. This preferred method has the advantage that the production can be automated with little effort. This preferred method has the advantage that the recesses and / or protrusions can be produced with increased accuracy.

According to a preferred development of the aforementioned method, the forming tool is designed as a roller with the arrangement of "negatives", wherein the roller can act on this first lateral surface of a cut-to-size base of this roller (step S2). This preferred development offers the advantage of lower manufacturing costs. This preferred development has the advantage that the production can be automated with little effort.

According to a further preferred development of the method, the roller rolls off on an elongate metal plate with force (step S3), and the basic bodies are singulated by cutting sections of the elongate metal plate (step S4). This preferred development offers the advantage of lower manufacturing costs. This preferred development has the advantage that the production can be automated with little effort.

Alternatively, instead of the aforementioned forming tool, a punch or a roll without "negatives" is used. Before stamping or These geometrically indeterminate bodies are guided between the punch or roller and the main body or the elongated metal plate by force-acting unrolling (step S5). Subsequently, stamped or force applied unrolled (step S6). Preferably, the geometrically indefinite bodies are removed again after step S6 (step S7), so that the depressions remain. Otherwise, the geometrically indeterminate bodies remain in the first lateral surface, whereby these projections are formed.

According to another preferred method, one or both of these base plates are formed with a thin-walled metal sheet. In this case, the depressions and / or projections are produced by means of a forming process, in particular by means of pressing or deep drawing of the thin-walled metal sheet (step S13). This preferred method has the advantage that the manufacture of the base plates is simplified. This preferred method offers the advantage that the heat flow is increased.

As an alternative to steps S1, S2, S3 or S13, the recesses can be produced by an erosion method, in particular in one of the base plates (step S14). Preferably, the electrode is formed substantially corresponding to a negative of one of these recesses. This preferred alternative offers the advantage of lower production costs. Preferably, step S4 is subsequently performed. This preferred alternative has the advantage that the production can be automated with little effort.

This preferred alternative has the advantage that the wells can be made with increased accuracy.

As an alternative to steps S5, S6, the recesses, in particular in one of the base plates, can be produced with at least partially substantially spherical bodies, which in particular are acted upon by a punch with a force in the direction of one of these first lateral surfaces (step 15). Preferably, step S4 is subsequently performed. This preferred alternative has the advantage that the production can be automated with little effort. This preferred alternative has the advantage that the wells can be made with increased accuracy.

The object is also achieved by a method for operating a tempering device which has at least one of these temperature sensors. An independent control device, in particular the battery control device, processes this display value (step S8), in particular the independent control device links the display value to one of these first and / or second limit values, in particular by forming a difference from the display value and one of these limit values.

If the result indicates that the first limit value has been exceeded, in particular at too high a temperature of the energy storage device, then the independent control device activates this fluid conveying device for conveying the tempering fluids through the fluid channel (step S9), wherein the tempering fluid has a lower temperature than the energy storage device. Alternatively or additionally, the independent control device lowers the inlet temperature of the tempering fluid (step S10). Thus, the energy storage device heat energy can be withdrawn. This preferred method has the advantage that a damaging overheating of the energy storage device can be counteracted.

If the result indicates an undershooting of the second limit, in particular to a low temperature of the energy storage device, then the independent control device turns off this fluid conveyor (step S11), whereupon the thermal power generated in the energy storage device by supplying or removing an electric current in the energy storage device at least partially can remain. Alternatively, when the fluid delivery device is activated, the independent control device raises the inlet temperature of the tempering fluid (step S12) so that heat energy can be supplied to the energy storage device. This preferred method has the advantage that a damaging hypothermia of the energy storage device can be counteracted.

Further advantages, features and applications of the present invention will become apparent from the following description taken in conjunction with the figures. It shows:

1 partially schematically a preferred embodiment of the tempering device with a cuboid base body and two Kanalanschlusseinrichtungen,

2 partially schematically a further preferred embodiment of the tempering device with a cuboid base body and two alternative duct connection devices,

3 partially schematically the open body of the tempering according to 1 , one of these first lateral surfaces of the fluid channel with a matrix of depressions and two channel connection devices,

4 partially schematically a partial section of another preferred tempering device,

5 partially schematically a section through the main body of the preferred tempering according to 1 .

6 partially schematically two projections of a preferred depression or projection

7 partly schematically a battery according to the invention,

8th partially schematically different preferred embodiments of the tempering.

1 shows partially schematically a preferred embodiment of the tempering with a cuboid base body 1 and two laterally attached to the main body Kanalanschlusseinrichtungen 4 . 5 , The main body 1 is substantially parallelepiped-shaped, in particular with two mutually connectable base plates formed. The main body 1 has one or two second lateral surfaces for thermally conductive connection with one of these energy storage devices. The main body 1 is formed with aluminum, copper or an alloy with at least one or both of these metals. The increased thermal conductivity of this body contributes to the increased exchange of heat energy or heat output with the energy storage device, not shown. The duct connection device 4 serves the deflection of the temperature control fluid from the fluid supply line, not shown in the body. The duct connection device 5 serves to deflect the temperature control fluid in a fluid return line, not shown. The duct connection devices 4 . 5 are concerning the main body 1 so arranged that these do not have the longer parallel edges of the main body 1 extend beyond. This saves space.

2 shows partially schematically a further preferred embodiment of the tempering with a cuboid base body 1 and two laterally attached to the base body alternatively Kanalanschlusseinrichtungen 2 . 3 , The main body 1 is substantially parallelepiped-shaped, in particular with two mutually connectable base plates formed. The main body 1 has one or two of these second lateral surfaces for thermally conductive connection, each with an energy storage device. The main body 1 is formed with aluminum, copper or an alloy with at least one or both of these metals. The thermal conductivity of the body contributes to the increased exchange of heat energy or heat output with the energy storage device, not shown. The duct connection device 4 serves to deflect the tempering fluid from the fluid supply line, not shown in the body. The duct connection device 5 serves to deflect the temperature control fluid in a fluid return line, not shown. The duct connection devices 4 . 5 are concerning the main body 1 arranged so that these extend over the longer parallel edges of the main body 1 extend beyond. With a lesser deflection of the tempering fluid is compared to the embodiment according to 1 lower pressure loss in the tempering possible. This saves energy for operating the tempering device.

3 shows partially schematically the open body 1 the tempering according to 1 , one of these first lateral surfaces of the fluid channel 6 with a matrix of wells 7 and two cut duct connection devices 4 . 5 ,

The main body 1 and the duct connection devices 4 . 5 essentially correspond to those of 1 , The main body 1 is formed with two base plates, with only one of these base plates 3 is shown.

The fluid channel 6 with a substantially rectangular cross section runs along the base plate 3 , In the first lateral surface of the fluid channel 6 or the base plate 3 are numerous depressions 7 introduced, which are arranged as a matrix. In particular, the depressions 7 formed as spherical sections and with "negatives" on this shaping tool in the first lateral surface of the fluid channel 6 or the base plate 3 embossed.

The wells 7 are formed as spherical sections and with "negatives" on this forming tool in the first lateral surface of the fluid channel 6 or the base plate 3 embossed. The wells 7 serve to increase the turbulence in the tempering, whereby the heat exchange between the tempering fluid and the base plate 3 is improved.

The wells 7 are arranged as a matrix and over the entire width of the fluid channel on the base plate 3 distributed. Alternatively, not shown, the depressions 7 in several mutually offset rows over the entire width of the fluid channel on the base plate 3 be arranged distributed.

The wells 7 serve to increase the turbulence in the tempering, whereby the heat exchange between the tempering fluid and the base plate 3 is improved. Thus, the heat exchange between the tempering fluid and the energy storage device, not shown, is improved. In comparison, in particular with ribs, in particular transversely to the main flow direction is limited the pressure loss in the tempering with the wells or projections.

From the duct connection device 4 with a substantially cylindrical inlet surface of the tempering occurs in the substantially rectangular fluid channel 6 one. The spreading of the tempering takes place in the duct connection device 4 for the largest possible heat exchange between the tempering fluid and the base plate 3 , Thus, the heat exchange between the tempering fluid and the base plate 3 improved. After passing the heat exchange section 10 , which at least partially with the matrix of wells 7 coincides, the tempering occurs in the second channel connection means 5 one. The tempering fluid is in the second Kanalanschlusseinrichtung 5 deflected into the fluid return line, not shown, and in the substantially cylindrical exit surface of the second channel connecting device 5 collected.

The base plate 3 has raised edges, symbolized by black lines, which serve the connection with the other, not shown base plate and the leadership of the tempering fluid. The raised edges are arranged in particular circumferential, but are interrupted in particular where the tempering between the Kanalanschlusseinrichtungen 4 . 5 and the base body or fluid channel is replaced. With the illustrated embodiment of the raised edges areas with significantly lower flow rate of Temperierfluids can be avoided.

Length L _G and width B _{G of} the base plate 3 be at least 10 times or 5 times the wall thickness W _G. The fluid channel 6 is almost as wide as the base plate 3 such that B _F / B _{G is} greater than 0.6.

4 shows partially schematically a partial section of another preferred tempering device similar to the tempering according to 3 , The base plate 3 limits the fluid channel, its feed section 8th and its heat exchange section 10 , which at least partially with the matrix of wells 7 coincides. The second base plate is not shown.

From the duct connection device 4 with a substantially cylindrical inlet surface of the tempering occurs in the substantially rectangular fluid channel. The spreading of the tempering takes place in the duct connection device 4 as well as in the feeding section 8th for the largest possible heat exchange between the tempering fluid and the base plate 3 in the heat exchange section 10 , Thus, the heat exchange between the tempering fluid and the base plate 3 improved.

The wells 7 are formed as spherical sections and with "negatives" on this forming tool in the first lateral surface of the fluid channel 6 or the base plate 3 embossed. The wells 7 serve to increase the turbulence in the tempering, whereby the heat exchange between the tempering fluid and the base plate 3 is improved.

The wells 7 are arranged as a matrix and over the entire width of the fluid channel on the base plate 3 distributed. Alternatively, not shown, the depressions 7 in several mutually offset rows over the entire width of the fluid channel on the base plate 3 be arranged distributed.

The wells 7 serve to increase the turbulence in the tempering, whereby the heat exchange between the tempering fluid and the base plate 3 is improved. Thus, the heat exchange between the tempering fluid and the energy storage device, not shown, is improved. In comparison, in particular, with ribs, in particular transversely to the main flow direction, the pressure loss in the tempering fluid is limited by the depressions or projections.

The base plate 3 has raised edges, symbolized by black lines, which serve the connection with the other, not shown base plate and the leadership of the tempering fluid. The raised edges are arranged in particular circumferential, but are interrupted in particular where the tempering between the Kanalanschlusseinrichtungen 4 . 5 and the base body or fluid channel is replaced. With the illustrated embodiment of the raised edges areas with significantly lower flow rate of Temperierfluids can be avoided.

5 shows partially schematically a section through the main body of the preferred tempering according to 1 , The main body has two base plates 2 . 3 in particular of aluminum, copper or an alloy with at least one or both of these metals. Between the base plates 2 . 3 is the fluid channel with feed section 8th , Heat exchange section 10 and discharge section 9 educated.

The heat exchange section 10 has the matrix of pits 7 on, as ball sections in the base plate 3 shaped, to increase the turbulence in the tempering fluid and improve the heat exchange between the tempering fluid and the base plates 2 . 3 ,

In the feeder section 8th the tempering fluid is accelerated for higher Flow rate and improved heat exchange in the heat exchange section 10 , In addition takes the wall thickness of the base plate 2 from the duct connection device 4 in the direction of the heat exchange section 10 to. In the heat exchange section 10 the cross-section of the fluid channel is uniform, neglecting the depressions and / or projections. After passing the heat exchange section 10 the tempering occurs in the discharge section 9 one. The discharge gate 9 essentially corresponds to the feed section 8th , but is flowed through in the opposite direction. In the discharge section 9 the tempering fluid is decelerated. In addition takes the wall thickness of the base plate 2 from the heat exchange section 10 in the direction of the duct connection device 5 from. Subsequently, the tempering fluid enters the duct connection device 5 and is deflected there in the direction of the fluid return, not shown.

The arrow v _T shows the main flow direction or the direction of the time-averaged flow velocity of the tempering fluid.

The ratio of the length of the feed section 8th and the length of the heat exchange section 10 is about 0.22. As a result, the heat exchange between the tempering fluid and the base body is improved.

6 partially shows schematically two projections of a preferred well 7 or projection, which is designed as a ball portion, which are seen in particular from above circular.

The ratio of the depth or the height of the depression 7 or the projection to the width of the recess 7 or the projection is about 0.24. As a result, the pressure loss which the tempering fluid experiences along the fluid channel is reduced.

7a shows partially schematically two of this energy storage device 12 . 12a , between which one of these tempering 11 is arranged. The tempering device 11 is thermally conductive with the energy storage devices 12 . 12a connected. The at least one fluid channel and the depressions and / or projections of the base body 1 are not shown.

7b shows partially schematically two of these first arrangements, each with two of these energy storage devices 12 . 12a , between which one of these tempering 11 is arranged. The tempering device 11 is thermally conductive with the energy storage devices 12 . 12a connected. The at least one fluid channel and the depressions and / or projections of the base body 1 are not shown. One of these first arrangements is framed by dashed lines.

7c shows partially schematically four of these second arrangements, each with one of these energy storage devices 12 and adjacently arranged one of these tempering 11 , The tempering device 11 is thermally conductive with the adjacent energy storage device 12 connected. The at least one fluid channel and the depressions and / or projections of the base body 1 are not shown. One of these second arrangements is framed by dashed lines.

7d shows partially schematically two of these first arrangements, each with two of these energy storage devices 12 . 12a , between which one of these tempering 11 is arranged. The tempering device 11 is thermally conductive with the energy storage devices 12 . 12a connected. The at least one fluid channel and the depressions and / or projections of the base body 1 are not shown. Both of these first arrangements are in a battery case 13 added. The battery case 13 urges the energy storage devices and the tempering together. The battery case 13 has two battery connections 14 . 14a different electrical polarity. Not shown is the interconnection of the energy storage devices with the battery terminals 14 . 14a , Also not shown are thermocouples for detecting a temperature of the main body or energy storage devices, the control device, the conveyor for the tempering.

8a shows partially schematically a preferred tempering device 11 with a basic body 1 , The main body 1 has a second lateral surface 16 for heat-conducting connection with the energy storage device 12 on. Through the main body 1 extend a plurality of independent, substantially hollow cylindrical fluid channels 6 , which are arranged substantially parallel to each other. Each of these fluid channels 6 has a first lateral surface 15 on, which for limiting the fluid channel 6 and serves to guide the tempering fluid. The main body 1 is formed with an aluminum alloy. Not shown are the depressions and / or projections in the first lateral surfaces 15 which increase the turbulence of the fluid channel 6 serve flowing tempering.

8b shows partially schematically a further preferred tempering device 11 with a basic body 1 , This tempering device 11 corresponds essentially to the tempering of the 8a , where deviating the fluid channels 6 are each formed substantially cuboid.

8c shows partially schematically a further preferred tempering device 11 , wherein the two-part basic body is through the base plate 2 and the second base plate 3 is trained. The base plates 2 . 3 are formed with an aluminum alloy. The first base plate 2 has the second lateral surface 16 for heat-conducting contact or connection with the energy storage device 12 and one of these first lateral surfaces 15a for limiting the fluid channel 6 and for guiding the tempering on. The second base plate 3 has raised edges for connection to the first base plate 2 , for limiting the fluid channel 6 and for guiding the tempering on. Next, the second base plate 3 another of these first lateral surfaces 15 on. Not shown are the depressions and / or projections in the first lateral surfaces 15 . 15a which increase the turbulence of the fluid channel 6 serve flowing tempering. To increase the turbulence of the fluid channel 6 flowing tempering fluid, it is sufficient that one of these first lateral surface, 15 . 15a having the recesses and / or projections.

LIST OF REFERENCE NUMBERS

1

body

2, 3

Base plates of the main body

4, 5

Channel connecting device

6

fluid channel

7

deepening

8th

feeding section

9

rejection section

10

Heat exchange section

11

tempering

12, 12a

electrochemical energy storage device

13

battery case

14, 14a

battery terminals

15

first lateral surface

16

second lateral surface

v _T , r → _S

Main flow direction or direction of the time-averaged flow velocity

Claims (14)

Battery having a plurality of electrochemical energy storage devices ( 12 . 12a ) and at least one tempering device ( 11 ), wherein the at least one tempering device ( 11 ) for heat exchange with at least one, in particular adjacent, of said energy storage devices ( 12 . 12a ), wherein the at least one tempering device ( 11 ): - one, in particular substantially cuboid, base body ( 1 ), which for heat-conducting connection with at least one of these energy storage devices ( 12 . 12a ), - at least one fluid channel ( 6 ), which at least partially through the body ( 1 ), which is designed to guide a flowing tempering fluid, in particular along a main flow direction, which at least a first lateral surface ( 15 ), - several depressions ( 7 ) and / or projections, which on the first lateral surface ( 15 ), which are in particular configured, the turbulence of the tempering fluid, in particular at least adjacent to the depressions ( 7 ) and / or protrusions. Battery according to the preceding claim, wherein the basic body ( 1 ) with at least one, preferably two, of these energy storage devices ( 12 . 12a ) is thermally conductively connectable and / or wherein the at least one tempering device ( 11 ) between two of these energy storage devices ( 12 . 12a ) can be arranged. Battery according to one of the preceding claims, wherein at least some of these depressions ( 7 ) and / or projections each have at least substantially the shape of a spherical segment, a cone or a pyramid. Battery according to one of the preceding claims, wherein several of these recesses ( 7 ) and / or projections in a row, preferably in a plurality, in particular parallel, rows, particularly preferably as a matrix, are arranged. Battery according to one of the preceding claims, wherein the at least one fluid channel ( 6 ), in particular transversely to the main flow direction, has a substantially cylindrical or rectangular cross-sectional area. Battery according to one of the preceding claims, wherein the at least one tempering device ( 11 ) one of these substantially cuboid-shaped body ( 1 ), wherein the basic body ( 1 ) for thermally conductive connection with at least one of these Energy storage devices ( 12 . 12a ), and a plurality of these fluid channels ( 6 ), which in the body ( 1 ) are arranged substantially parallel to each other. Battery according to one of claims 1-5, wherein the at least one tempering device ( 11 ) one of these basic bodies ( 1 ), wherein the basic body ( 1 ) with two, in particular substantially rectangular, base plates ( 2 . 3 ), wherein - the at least one fluid channel ( 6 ) between these two base plates ( 2 . 3 ), - at least one of these base plates ( 2 . 3 ) for thermally conductive connection with at least one of these energy storage devices ( 12 . 12a ), - at least one of these base plates ( 2 . 3 ) several of these depressions ( 7 ) and / or protrusions, - preferably at least one of these base plates ( 2 . 3 ) with a raised edge for connection to the other of these base plates ( 2 . 3 ) is trained. Battery according to one of the preceding claims, wherein - the fluid channel ( 6 ) a feed section ( 8th ) and a heat exchange section ( 10 ), - the heat exchange section ( 10 ) several of these depressions ( 7 ) and / or projections, - the feed section ( 8th ), the flow velocity of the tempering fluid in the direction of the heat exchange section ( 10 ), in particular for improved heat exchange with the energy storage device ( 12 . 12a ), Preferably the feed section ( 8th ) has an, in particular substantially rectangular, inlet surface for the tempering fluid and an outlet surface, preferably the inlet surface is larger than the outlet surface, the outlet surface being the heat exchange section (FIG. 10 ) is facing. Battery according to one of the preceding claims, with at least one channel connection device ( 4 ), which - can be connected to an independent fluid supply line, - is configured, the tempering fluid from the fluid supply line by more than 45 °, preferably by about 90 °, in the fluid channel ( 6 ) - preferably has a substantially cylindrical entrance surface and a substantially rectangular exit surface, - preferably with the entry surface of the feed section ( 8th ) is connectable. Battery according to one of the preceding claims with a temperature sensor, which is configured, a temperature of the base body ( 1 ) or one with the main body ( 1 ) thermally conductively connected energy storage device ( 12 . 12a ), which is configured to provide a display value which is proportional to the detected temperature. Process for the preparation of one of these tempering devices ( 11 ), in particular for the production of several of these depressions ( 7 ) and / or projections on one of these first lateral surfaces ( 15 ) of the tempering device ( 11 ), the depressions ( 7 ) and / or projections with a shaping tool in the first lateral surface ( 15 ). Process for the preparation of one of these tempering devices ( 11 ), in particular for the production of several of these depressions ( 7 ) and / or projections on one of these first lateral surfaces ( 15 ) of the tempering device ( 11 ), comprising the steps of: arranging geometrically indeterminate bodies on the first lateral surface ( 15 ) of the basic body ( 1 ), - pressing the geometrically indefinite bodies in the direction of the first lateral surface ( 15 ) with a stamp or roller, preferably - removing the geometrically indeterminate body. Process for the preparation of one of these tempering devices ( 11 ), in particular for the production of several of these depressions ( 7 ) and / or projections on one of these first lateral surfaces ( 15 ) of the tempering device ( 11 ), where depressions ( 7 ) and / or projections by means of a forming process, in particular by means of pressing or deep drawing, in one or both of these base plates ( 2 . 3 ), in particular each formed as a thin-walled metal plate, are introduced. Method for operating a tempering device ( 11 ) according to claim 10, wherein an independent conveyor for the tempering fluid is activated when the indication value exceeds a predetermined first limit value.

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