EP2502292A1

EP2502292A1 - Battery housing for holding electrochemical energy storage devices

Info

Publication number: EP2502292A1
Application number: EP10785339A
Authority: EP
Inventors: Tim Schaefer; Claus-Rupert Hohenthanner
Original assignee: Li Tec Battery GmbH
Current assignee: Li Tec Battery GmbH
Priority date: 2009-11-16
Filing date: 2010-11-15
Publication date: 2012-09-26
Also published as: JP2013511116A; US20130130078A1; BR112012011216A2; DE102009053506A1; WO2011057815A1; CN102598354A; KR20120099722A

Abstract

A battery housing surrounds at least one but preferably a multiplicity of electrochemical energy storage devices. The battery housing has at least one but preferably a multiplicity of cell compartments to hold these electrochemical energy storage devices. The surface of the battery housing consists of four side surfaces, a bottom surface and a top surface, with the side surfaces being formed by the cell compartment elements. Two electrochemical energy storage devices are preferably arranged in one cell compartment. In particular, an elastic equalizing element is arranged between two electrochemical energy storage devices. The cell compartments are formed by cell compartment elements. In particular, a cell compartment element forms at least one cell compartment, and two cell compartment elements preferably form one cell compartment. The cell compartments can be closed, in particular, by a cover element.

Description

Battery housing for accommodating electrochemical

Energy storage devices

Description

The present invention relates to a battery case for accommodating a plurality of electrochemical energy storage devices and a method of manufacturing this battery case. A battery housing according to the invention surrounds, essentially with rigid walls, at least two electrochemical energy storage devices. Such a battery housing preferably has a plurality of cell compartments but at least one cell compartment, wherein one or more electrochemical energy storage devices are arranged in a cell compartment. The battery case is intended to absorb external stresses, such as a force to keep away from the electrochemical energy storage devices and to influence the temperature balance.

Previously used battery cases affect the temperature management of the energy storage devices through relatively complex spatial arrangements thereof, such as e.g. DE 10 2008 014 155 A1. This type of arrangement can be achieved by using partly complex housing elements such as e.g. DE 10 2007063 269 A1 can be achieved. Complex enclosures are difficult to manufacture mechanical components. One aspect of the present invention is therefore to provide an easy-to-manufacture battery case for electrochemical energy storage devices.

The invention is therefore based on the object to provide a battery case available, which serves to increase the reliability of electrochemical energy storage devices. This is achieved according to the invention by the teaching of the independent claims. Preferred developments of the invention are the subject of the dependent claims.

A battery housing surrounds at least one but preferably a plurality of electrochemical energy storage devices. The battery housing has at least one but preferably a plurality of cell compartments for receiving these electrochemical energy storage devices. The surface of the battery case consists of four side surfaces, a bottom and a top surface, the side surfaces being formed by the cell compartment elements. Preferably, two electrochemical energy storage devices are arranged in a cell compartment. In particular, an elastic compensation element is arranged between two electrochemical energy storage devices. The cell compartments are formed by cell compartment elements. In particular, a cell roof element forms at least one cell compartment, preferably two cell compartment elements form a cell compartment. The cell compartments are in particular closable by a cover element. An electrochemical energy storage device has at least one electrode stack, a current conductor and an enclosure. An electrochemical energy storage device is provided to convert and store electrical energy into chemical energy. Conversely, the electrochemical energy storage device can convert the chemically stored energy back into electrical energy and release. Preferably, such an electrochemical energy storage device is designed as a lithium-ion battery.

A cell roof element is to be understood as a thin-walled molded part which essentially defines a cell compartment. A cellular element, at least with a portion of its wall, forms at least a portion of the outer surface of this battery case, preferably a portion of the side wall of the battery case. Preferably, there is a temperature-conducting connection between a cell element and at least one electrochemical energy storage device. Under a side wall of the battery case, the lateral boundary of the battery case is to be understood. This sidewall partially separates the contents of the battery case from the environment surrounding the battery case. This side wall is formed in particular by cell compartment elements.

A lid element according to the invention is understood to mean a component or a device which is intended to close the edge opening of a cell compartment. Depending on the configuration of the cell compartment element, a cell compartment has in particular one or preferably two edge openings. Thus, a cover element preferably delimits the contents of the battery housing at least in regions relative to the environment surrounding the battery housing. In particular, a cover element is provided to selectively direct a Temperiermediumsstrom to the cell compartment elements or derived from these. Preferably, a cover element for guiding the tempering medium has cavities. These cavities are in particular designed so that the cell compartment elements can not only be serially flowed through by a temperature control medium flow, but that the cell compartment elements can be flowed through in series, in particular by two or more temperature control medium flows. In particular, the cell compartment elements can be flowed through by a predetermined design of these cavities in any order. In particular, these cavities can be designed such that at least two or preferably all cell compartment elements are flowed through in parallel by the temperature control medium. In particular, devices may be used in a cover element which are intended to actively conduct the tempering medium flow.

Active conduction of the temperature control medium flow is to be understood as meaning that predetermined cavities of the cover element are opened or closed, in particular as a function of external control commands or as a function of the tempering medium temperature. For guiding the tempering medium flow in particular thermostats or valves are provided.

An intermediate wall is to be understood as meaning a wall running within the battery housing which has cavities and / or recesses can. This wall preferably delimits the cell compartments at least in regions and is part of the cell compartment element.

In the context of the invention, a connection element is to be understood as meaning a component which is intended to produce a positive connection between a cover element and at least one cell compartment element.

A latching connection according to the invention is a positive connection, which establishes a connection between a cover element and at least one cell compartment element without further components.

For the purposes of the invention, a connection region is to be understood as meaning a specific section of a cell compartment element. In this connection region, a first cell compartment element contacts a second cell compartment element.

According to the invention, a temperature control medium is to be understood as meaning a gaseous or liquid fluid. The tempering medium is provided to supply the battery housing with an energy flow or dissipate it. Under flow channels cavities in the battery housing are to be understood within the meaning of the invention. These cavities are flowed through as planned by the temperature control medium and can be located both in one or more cover elements and in one or more cell compartment elements. In particular, the cell compartment elements are made of a metallic material or preferably of a fiber composite material. In particular, this is a material with a high thermal conductivity, preferably with a thermal conductivity at 20 ° C of λ ₂₀ = = 40 to 1000 W / (K * m), preferably 100 to 400 W / (K * m) and particularly preferred about 220 W / (K * m). This material preferably comprises aluminum as an essential constituent; other constituents in particular may be manganese, magnesium, copper, silicon, nickel, zinc and beryllium.

In the case of a fiber composite material, the thermal conductivity is achieved, in particular, by a high proportion of thermally conductive fibers, which are in particular made from a material having the aforementioned heat conduction properties. stand. In particular, a fiber composite material has a fiber content of 30 to 95% by volume, preferably 40 to 80% by volume and more preferably 50 to 65% by volume.

In particular, the cell compartment elements are made of a hybrid material. For the purposes of the invention, a hybrid material is to be understood as meaning a material which, in regions, consists of a plastic, in particular of a fiber-reinforced plastic and in some areas of a metallic material. In those areas in which the hybrid material consists of metal, it has in particular good thermal conduction properties, in those areas in which this material consists of fiber-reinforced plastic, it has in particular good heat-insulating properties. In particular, this thermal conductivity is less than 0.5 W / (K * m), preferably less than 0.2 W / (K * m), and more preferably less than 0.1 W / (K * m), each at 20 ° C.

Due to the favorable heat conduction properties and in the case of a hybrid material and the good insulation properties of the battery case, the temperature balance of the energy storage devices can be easily influenced and thus increase the reliability.

In particular, the cell compartment elements are to be understood as a thin-walled molded part produced by deformation. Preferably, this molded part consists of a, in forming manufacturing processes, such. Bending, deep drawing, pressing or punching, machined sheet metal. This sheet has in particular a wall thickness of 0.3 mm - 2.2 mm, preferably from 0.8 mm - 1, 2 mm, preferably from 1, 0 mm. In particular, results from a suitable choice of wall thickness, a favorable weight / stiffness ratio (lightweight) of the battery case, thus external stresses of the

kept away electrochemical energy storage devices and thus increases the reliability. In particular, the cell compartment elements are to be understood as a thin-walled, originally formed molded part. Forming manufacturing processes are in particular the continuous casting or extrusion. Preferably, such a profiled cell compartment element has, at least in sections, a wall thickness of 1.0 mm - 3.0 mm, preferably of 1.8 mm - 2.5 mm and particularly preferably of 2.2 mm. By a suitable shaping and Material choice, the temperature line of the cell compartment elements is improved and thereby the reliability of the electrochemical

Energy storage devices increased. In particular, cell compartment elements made of a metallic material are in the contact areas to other cell compartment elements with a heat insulating layer, such. Microtherm, provided. In particular, this thermal insulation layer is vapor-deposited or painted. In particular, the heat insulation layer has a light color, preferably white. Particularly preferably, the heat insulation layer is embodied in a mirror-like or reflective manner. Thus, in particular the heat conduction from one cell compartment element to another is made more difficult.

In particular, the cell compartment elements are to be understood as a thin-walled molded part, which is manufactured from a hybrid material. In this case, the cellular compartment element is made of plastic, in particular at the points where it contacts another cell compartment element. In other areas, this cellular compartment element is made in particular of a metallic material. This design of the cell compartment elements in particular the heat transfer from one cell compartment to another and thus the mutual heating of the electrochemical energy storage devices is made difficult and on the other hand favors the heat transfer to the environment surrounding the battery case.

In particular, this plastic region of the cell compartment element is at least partially, in particular in the region facing the electrochemical energy storage device, with a heat conducting layer, e.g. a thermally conductive foil, coated. Preferably, this plastic region is vapor-deposited with a heat-reflecting layer. This heat-reflecting layer is especially white or specular. This heat-conducting layer has a temperature-conducting connection, in particular with the metallic region of the cell compartment element. By means of this heat-conducting layer, in particular a temperature current is dissipated from the electrochemical energy storage device and conducted to the metallic region of the cell compartment element.

By means of a suitable shaping and choice of material, the temperature conduction of the cell compartment elements is improved and thus the operational safety of the electrochemical energy storage devices increases.

In particular, a cell compartment element has a connection region, which is intended to produce a positive connection with a cover element. In particular, such a positive connection exists between a cover element and a plurality of cell compartment elements, preferably between a cover element and all cell compartment elements. Due to the selected type of connection between the lid and cell compartment elements, the cell compartment contents are protected from external influences and thus increase the reliability.

In particular, an additional connecting element is provided for producing this positive connection. Such a connecting element is preferably a substantially elongated component. This connecting element is preferably connected to the battery housing in a materially bonded manner; in particular, the connecting element is glued to the battery housing at least in regions. In particular, a cohesive connection thus arises between the connecting element, the cover element and the cell compartment element. Due to the particularly stressable design of this connection area, the reliability is increased.

In particular, the positive connection between a cover element and a cell compartment element 1 is produced without additional connecting elements. Such a latching connection in particular connects a cover element with one or preferably with all cell compartment elements. Such a latching connection is preferably a frictional or particularly preferably positive connection. The particularly simple design of this cover element connection area contains only a few sources of errors during assembly and production, thus increasing the safety of the battery housing.

In particular, two adjacent cell compartment elements have a common connection area. Preferably, these cell compartment elements contact each other in this connection area. Preferably, the cell compartment elements in this connection region are integrally connected to one another. In particular, such a cohesive connection is produced by gluing. Preferably, the cell compartment elements in this connection area are positively connected to each other. By additional ribbing, which represents such a connection region for the battery case, results in a particularly rigid and thus secure battery case.

In particular, a temperature control medium is present in a battery housing. This tempering medium is intended to conduct an energy flow. Preferably, this energy flow is derived to or from a cover element. Particularly preferably, this energy flow is derived from at least one cell compartment element or from it. In particular, the tempering medium flows through at least one cell compartment element and at least one cover element. In particular, a plurality of battery housing can be connected by the Temperiermediumsanschlüsse, thus easily a plurality of battery housing flows through the temperature control. By the active temperature control of the electrochemical energy storage devices, the reliability of this is increased.

In particular, a cell compartment element has at least one or more flow channels. Preferably, two cell compartment elements form at least one flow channel. These flow passages are intended to be flowed through by a temperature control medium. In particular, such throughflow channels are evacuated between two cell compartment elements and are not flowed through. The pressure in such a gap is preferably 0.9 * 10 ⁵ Pascal to 0 * 10 ⁵ Pascal preferably 0.8 * 10 ⁵ Pascal to 0.5 * 10 ⁵ Pascal and more preferably 0.7 * 10 ⁵ Pascal to 0 , 6 * 10 ⁵ Pascal. By evacuating these flow channels, the thermal conductivity of these areas is especially at below 0.03 W / (m * K) at 20 ° C.

In particular, these flow-through channels are provided with a phase change material (PCM) which is present as solid at ambient temperature, e.g. a salt or a paraffin, filled. With an increase in the temperature within the flow channels of preferably above 200 ° C or more preferably above 100 ° C, this phase change material changes its state of aggregation and liquefies. By liquefying is

especially heat energy absorbed. Through this change of Aggregate state occurs less heat energy from one cell compartment to the other, thereby the reliability of the electrochemical

Energy storage devices increased. To produce a battery housing, cell compartment elements are preferably produced by a suitable original or transforming manufacturing process. In particular, these cell compartment elements for producing the battery case relative to each other, brought into a predetermined position. Preferably, at least one of these cell compartment elements is then connected to at least one cover element. In particular, contact points between the cover element and cell compartment elements, which are intended to be flowed through by a temperature control, fluid-tight manner. Such a connection may in particular be provided by elastic sealing means, e.g. O-rings, sealing lips or by a material connection by means of sealing pastes or sealing strips are produced.

In particular, for producing a cellular compartment element from a

Hybrid material a metallic insert inserted into a mold and connected in its edge region cohesively with plastic to form a cell compartment element. In particular, in this edge region, this insert has a structure which preferably has recesses in order to form a particularly strong connection with the plastic region of the cell compartment element.

In particular, a cellular compartment element is materially connected to a cover element, preferably by gluing or welding.

Further advantages and embodiments of the present invention will become apparent from the accompanying drawings. 1 shows a battery housing for electrochemical energy storage devices, comprising a plurality of cell compartment elements and two cover elements, wherein connections for a temperature control medium are provided on a cover element. 2: two cell compartment elements with electrochemical Energy storage devices. The cell compartment elements are made of sheet metal and form a positive connection in their connection area. In the intermediate between two electrochemical energy storage devices is an elastic

Compensation element.

3: two different embodiments of cell compartment elements. These cell compartment elements are designed as extruded profiles. In Figure 3 b form two cell compartment elements a double wall, which can be traversed by a temperature control.

4 shows two different configurations for cell compartment elements, which are made of sheet metal. 4a, a tempering medium line is inserted into the cell compartment element and it can be flowed through by a temperature-control medium. 4b shows a cell compartment element with a plurality of cooling fins, which are intended to enlarge the surface of the cell compartment element and thus to improve the heat conduction. 5: two different embodiments of cell compartment elements, which are made of extruded profiles. In Fig.5a flow channels are introduced into the cell compartment element and these channels can be traversed by a temperature control. FIG. 5 b shows a cell compartment element with a plurality of cooling ribs, which are intended to enlarge the surface of the cell compartment element and thus to improve the heat conduction.

.6: the connection area between cell box members and one

Cover element, wherein the connection is made by a connecting element. This connecting element is glued to the cover element and the cell compartment elements.

7 shows the connection area between cell compartment elements and one

Cover element, wherein the connection is made by a latching connection. 8 shows different possibilities for flow through cell compartment elements, the temperature control medium flow being controlled by the cover element.

9 shows a cell compartment element made of a hybrid material.

First, the invention will be illustrated in an example with reference to FIG. FIG. 1 shows a battery housing for accommodating electrochemical energy storage devices 15. This battery housing has two cover elements 2 and a plurality of cell compartment elements 1. In this case, two terminals 3 are introduced for a tempering in a cover element 2. The temperature control medium flows into the cover element 2 through one of these connections. From the cover element 2, the temperature control medium flows back through the individual cell compartment elements 1 to the second connection 3.

In Figure 2, two cell compartment elements 1 a are shown made of sheet metal. These cell compartment elements 1a together form a connection area 5a. In this connection region 5 d, the two cell compartment elements 1 a are positively connected to each other. The cell compartments 4 are separated by an intermediate wall 13. In the cell compartments 4 are each two electrochemical energy storage devices 15. These energy storage devices 15 are pressed by elastic compensation elements 16 against the cell tray element 1, thereby creating a temperature-conducting connection between cell compartment element 1 and energy storage device 15th

In Figure 3a, two cell compartment elements 1 b are shown. These cell compartment elements 1 b are made of a continuous casting profile. The two cell compartment elements 1 b form a common connection area 5b with each other. In this connection region, the cell compartment elements 1 b are positively connected with each other.

Figure 3b shows two cell compartment elements 1 c, which are made of a continuous casting profile. The two cell compartment elements 1 c form a common Connection area 5c with each other. Through the connection of the two cell compartment elements 1 c, a double-wall cavity 6 c is created between them. This cavity 6c is intended to be flowed through by a temperature control medium. The two cell compartment elements le are fluid-tightly connected to one another in their connection region 5c. By an appropriate choice of the wall thickness in the region of the double intermediate wall 12, an elastic region of the cell compartment element 4 results. This elastic region of the cell compartment elements 1 c eliminates the elastic compensation element 16 between the energy storage devices 15.

FIG. 4 a shows a cell compartment element 1 d, which is produced from sheet metal. This cell compartment element 1d has a shape, so that a tempering medium line 6d can be introduced into the cell compartment element 1d. This Temperiermediumsleitung 6d is intended to be traversed by a temperature control.

FIG. 4b shows a cell compartment element 1e which is produced from sheet metal. This cell compartment member 1e has a plurality of cooling fins 7e. Through these cooling fins 7e, the surface of the cell compartment element 1 e is increased, thus a better temperature conduction is achieved.

FIG. 5a shows a cell compartment element 1f which is produced from a continuous casting profile. In this cell compartment element 1 f flow channels 6 f are introduced. These recesses 6f are intended to be flowed through by a temperature control medium. These flow channels 6f can also be located in the intermediate walls 12. The flow channels 6f in the cell compartment elements 1f may also be in communication with the cover flow channels 14 (not shown). FIG. 5b shows a cell compartment element 1f, which is produced from a continuous casting profile. This cell compartment member 1f has a plurality of cooling fins 7f. These are intended to enlarge the surface of the cell compartment element 1f. By enlarging the surface, a better temperature conduction is achieved. The cooling fins 7f are advantageously aligned so that they are from an artificially generated or by, by Heating the ambient air resulting, air flow can be flowed in the rib longitudinal direction.

FIG. 6 shows the connection region 9 between a cover element 2 and cell compartment elements 1. The lid member 2 has a series of Zellenfachausnehmungen 10. Cellular elements 1 engage in these recesses 10. The cell compartment elements 1 and the cover element 2 are connected to one another in a form-fitting manner by a connecting element 8. This connecting element 8 is adhesively bonded to the Zellenfachele- elements 1 and the cover element 2 by gluing. Alternatively, the connecting element 8 may be fixed by fastening means such as e.g. Screws, rivets or pins are connected to the cover element 2 or the cell compartment elements 1.

FIG. 7 illustrates the connection region 9 between a cover element 2 and cell compartment elements 1. To form this latching connection, a special shaping of the cell compartment elements is provided. The cell compartment elements have a snap area 11, which can be deformed elastically. The cover element 2 has a detent portion 17, in which this snap region 11 of the cell compartment element 1 can engage. The latching connection can also be produced by additional spring and auxiliary elements.

FIG. 8 shows various possibilities for the flow through the cell compartment elements.

FIG. 8 a shows a serial flow through 3 cell compartment elements. The Temperiermediumsstrom 18 enters a cover element 2 and is directed by this to an outer cell compartment element 1. The temperature control medium flows from here starting a cell compartment element 1 after another. The Temperiermediumsstrom 18 exits at a second cover element 2 again.

FIG. 8b shows a further embodiment for the flow through a plurality of cell compartment elements 1. In this embodiment, the Temperiermediumsstrom is first through the lid member 2 and is passed to a cell compartment element 1. This is at least partially surrounded by other cell compartment elements 1. From this flowed through first Cell compartment element 1 divides the Temperiermediumsstrom 18 in a second cover element 2 and then simultaneously flows through (parallel) two other cell compartment elements 1. The Temperiermediumsstrom 18 exits from the same cover element 2, in which he has previously entered.

FIG. 8c shows a further embodiment for the flow through a plurality of cell compartment elements 1. In this case, a cover element 2 has tempering medium valves 19. With these tempering medium valves 19, the tempering medium flow 18 can be directed to individual cell compartment elements 1. In particular, not all cell compartment elements 1 must be controllable by a separate tempering medium valve 19. These Temperiermediumsventile are in particular thermostats. Such thermostats release the tempering medium flow 18 to cell compartment elements 1 or shut it off, or restrict the flow rate. Such thermostats operate as a function of temperature, e.g. of the tempering medium flow 18.

FIG. 9 shows an embodiment of a cell compartment element 1 h made of a hybrid material. The heat conduction from one cell compartment element to the other is prevented by the heat-insulating intermediate wall 12h made of plastic (FIG. 9a). By contrast, the heat conduction from a cell compartment element 1 h to the environment surrounding the cellular compartment element is promoted by the side wall 13 h consisting of a metallic material. The side wall 13h is in temperature-conducting connection with the heat-conducting foil 20. The heat-conducting foil 20 carries off a temperature flow from the surface of the electrochemical energy storage device and delivers it to the side wall 13h. This effectively prevents mutual heating of electrochemical energy storage devices in adjacent cell compartments. FIG. 9b shows different possibilities for configuring the edge region of the side wall 13h. The recesses in the side wall 13h lead to a better connection of the metallic side wall 13h with the intermediate wall 12h made of plastic.

Claims

P a n t a n s p r e c h e

1. Battery housing, for receiving at least one electrochemical energy storage device (15) in a cell compartment (4), said cell compartment has at least four side walls (13) and at least one cover element (2),

characterized in that

the cell compartments (4) are formed by at least one cell compartment element (1),

the cell compartment elements (1) form the side walls (13) of the battery housing,

the battery housing has at least one cell compartment element (1) and a cell compartment (4) and,

that this can be closed by at least one cover element (2).

2. Battery housing according to claim 1, characterized in that

the cell compartment elements (1) made of a metallic material, preferably made of a material which consists at least partially of aluminum.

3. Battery housing according to one of the preceding claims, characterized in that

the cell compartment elements (1) of a thin-walled, reshaping

made of molded part, preferably from a folded sheet, said sheet has a wall thickness of 0.3 mm to 2.2 mm, preferably a wall thickness of 0.8 mm to 1, 2 mm and more preferably a wall thickness of 1 mm. 4. Battery housing according to one of the preceding claims, characterized in that

the cell compartment elements (1) of a thin-walled, urformend

made molding, preferably from a continuous casting profile, which at least partially has a wall thickness of 1 mm to 3 mm, preferably from 1, 8 mm to 2.5 mm and more preferably of 2.2 mm.

5. Battery housing according to one of the preceding claims, characterized in that

at least one cover element (2) has a region (9) which is intended to produce a positive connection with at least one cell compartment element (1), preferably with all cell compartment elements (1).

6. Battery housing according to claim 5, characterized in that

for making this positive connection an additional

Connecting element (8) is used, wherein this connecting element (8) is preferably materially connected to the battery housing.

7. Battery housing according to claim 5, characterized in that

For making this positive connection a latching connection is used.

8. Battery housing according to one of the preceding claims, characterized in that

two adjacent cell compartment elements (1) have a common connection area (5) and contact one another in this,

Preferably, the cell compartment elements (1) are adhesively bonded in this area by adhesive or particularly preferably form-fitting manner. 9. Battery housing according to one of the preceding claims, characterized in that

a tempering medium can flow through the battery housing and is provided from at least one cover element (2) or from two cover elements (2), from a cell compartment element (1) or from a plurality of cell compartment elements (2) an energy flow off or to these

to lead.

10. Battery housing according to one of the preceding claims, characterized in that

the cell compartment elements have throughflow channels (6) or two adjacent cell compartment elements form flow channels (6c) which intended to be flowed through by a temperature control.

11. Battery housing according to one of the preceding claims, characterized in that

a cover element (2) or a cell compartment element (1) contains tempering medium valves (19).

12. A battery having a plurality of electrochemical energy storage devices, characterized in that

these energy storage devices are arranged in a battery housing according to one of the preceding claims. 13. A method for producing a battery case according to one of claims 1 to 11,

characterized in that

a cell compartment element (1) is produced by a suitable manufacturing method,

that a plurality of cell compartment elements (1) are brought into a predetermined position relative to one another,

in that at least one cell compartment element (1) is connected to at least one cover element (2).

A method of manufacturing a battery case according to claim 13 characterized in that

At least one cell compartment element (1) and a cover element (2) produce a material connection.

15. A method for producing a battery case according to one of

Claims 13 or 14, characterized in that

a cover element (2) is fluid-tightly connected to a cell compartment element (1) at least in the region of flow channels (6).