CN114079112A

CN114079112A - Battery device

Info

Publication number: CN114079112A
Application number: CN202110907148.3A
Authority: CN
Inventors: V.霍姆; H.赫尔腾
Original assignee: Volkswagen AG
Current assignee: Volkswagen AG
Priority date: 2020-08-10
Filing date: 2021-08-09
Publication date: 2022-02-22
Also published as: DE102020120992A1

Abstract

A battery device (1) comprising at least a housing (2) and at least one round battery cell (3) arranged therein, which extends from a base region (4) with a cylindrical battery cell body (5) along a longitudinal axis (6) to a head region (7) and on which head region (7) there is a round battery cell head (9) projecting in the direction of the longitudinal axis (6) relative to a head region end face (8), and a first channel (10) which extends from an inlet (11) through the housing (2) to an outlet (12); wherein the first channel (10) has at least one opening (13) through which the circular cell head (9) extends into the first channel (10); so that the gas of the at least one round cell (3) is expelled into the first channel (10) by the round cell head (9).

Description

Battery device

Technical Field

The present invention relates to a battery device. The battery device includes: a housing and at least one circular battery cell or a module comprising a plurality of circular battery cells arranged therein, and a channel.

Background

The battery unit is an electrical energy store which is used, for example, in a motor vehicle to store electrical energy. In particular, for example, the motor vehicle has an electric machine for driving the motor vehicle, wherein the electric machine can be driven by the electrical energy stored in the battery unit.

For example, battery cells with liquid electrolyte or solid electrolyte (solid-state batteries) are known.

The module comprises in particular one battery cell or a plurality of battery cells electrically connected in series or in parallel to each other. The individual modules may be electrically connected to each other in series or in parallel. The battery device comprises at least one module or, if appropriate, a plurality of modules.

In the development of battery devices, it is a primary objective to design the volume of the battery cells as large as possible and the housing surrounding the battery cells as small as possible, wherein the entire mechanical load situation without fires and short circuits must be tolerated.

In order to achieve maximum power and energy densities, the structural components must be designed in a space-saving manner and as far as possible without redundancy. Meanwhile, in addition to the installation space for the battery cells, sufficient installation space must be left in the case for the electric wires and the controller.

The main driving factor is the z-dimension chain (i.e. in the vertical direction of the motor vehicle), which is inevitably stacked in large numbers due to the high structural battery system in the vehicle floor. It is important to reduce the z-direction dimension, i.e., height, of the battery device as much as possible without neglecting or reducing the existing requirements. In addition to better driving dynamics and better flow resistance, the topic of boarding is also motivation (e.g., containment capability).

In particular, the load path for an external impact situation (e.g., the impact side of the pile) is moved or integrated directly into the housing of the module, so that, for example, more installation space is available for the battery cells.

An exhaust system for a battery of a motor vehicle is known from US 8,944,198B 2. The exhaust system includes a fan that is operated to exhaust gas from the battery in the event of a collision.

Disclosure of Invention

The technical problem underlying the present invention is to solve at least partially the problems of the prior art. In particular, a battery device is to be proposed, by means of which the use of the available installation space can be made as efficient as possible.

The object is achieved by a battery device having the features of claim 1. Advantageous embodiments are the subject matter of the dependent claims. The features mentioned individually in the description can be combined with one another in a technically meaningful manner and can be supplemented by explanatory facts in the description and/or details in the drawings, in which further embodiment variants of the invention are shown.

Proposed is a battery device which at least comprises

Housing and arranged therein

At least one round battery cell, which extends from the base region with a cylindrical battery cell body along the longitudinal axis to the head region and on which there is a round battery cell head projecting in the direction of the longitudinal axis relative to the end face of the head region, and

a first passage extending through the housing from the inlet to the outlet.

The first channel has at least one opening through which the circular cell head extends into the first channel such that gas of the at least one circular cell is expelled into the first channel by the circular cell head.

In particular, at least one battery cell of the battery device is used as a carrier. In the event of a crash, the crash energy can thus be dissipated by deformation of at least one battery cell.

At least one round battery cell, preferably a plurality of round battery cells, particularly preferably a plurality of modules each comprising a plurality of round battery cells, is arranged in the housing of the battery device. In this case, the round battery cells are arranged in the housing, in particular, with the highest possible packing density.

The round battery cell extends in particular from the base region along the longitudinal axis with a cylindrical battery cell body to the head region and has a round battery cell head on the head region, which protrudes in the direction of the longitudinal axis relative to the end face of the head region. The cell main body is composed of a plurality of electrode sheets (anode and cathode) and separators. In particular, the layers and the separator are first arranged in a stack and then wound around each other about the longitudinal axis, thereby constituting a substantially cylindrical battery cell body.

In particular, the cell body has a constant cross section along the longitudinal axis, so that the base region end face and the head region end face have in particular the same dimensions.

The round battery cell has a round battery cell head on a head region. In particular, the circular cell head has a smaller cross section transverse to the longitudinal axis than the cell body or the end face of the head region. In particular, the circular cell head is arranged substantially concentrically with respect to the head region end face or the cell body or the longitudinal axis.

In the event of damage or a crash, constituents of the round battery cell, such as gases and/or electrolyte residues, are discharged from the round battery cell through the round battery cell head.

The first channel is also arranged in the housing in particular. The first channel has an opening, in particular for each round battery cell arranged thereon (or in particular for each round battery cell arranged thereon, the first channel has an opening), through which the respective round battery cell head extends into the first channel. The components of the round battery cells can be discharged into the first channel via the respective round battery cell head, so that these components cannot escape into the housing and damage other round battery cells located in the housing.

The at least one round battery cell can be arranged in the battery device in a vertical or horizontal manner or in another installation position and thus in operation of the battery device relative to the environment (in particular relative to the direction of gravity).

In particular, a heat-conducting material is arranged between the end face of the head region and the first channel. In particular, the heat-conducting material enables particularly good heat dissipation from the round battery cell to the first channel or to the cooling medium flowing through the first channel.

In particular, the entire head region end face, possibly excluding the round cell head extending through the opening, is connected to the first channel in a thermally conductive manner by means of a thermally conductive material. In particular, heat is dissipated to the first channel through the entire head region (i.e. the head region end face and the round cell head).

In particular, the opening is sealed, for example fluid-tight or gas-tight, by a thermally conductive material with respect to the housing. That is, the separation of the volume arranged within the first channel with respect to the volume arranged within the housing but outside the first channel and the respective circular battery cell is achieved in particular by the thermally conductive material.

In particular, the base region is connected thermally conductively to the second channel. In particular, the base region is also connected to the second channel, in particular over as large an area as possible, by a thermally conductive material or by said thermally conductive material.

The second channel in particular also has an inlet and an outlet. In particular, the second channel is loaded with coolant.

In particular, the round battery cell has a winding mandrel extending along the longitudinal axis, wherein the winding mandrel is connected to the round battery cell head in a thermally conductive manner. In particular, the winding mandrel is optionally also connected in a thermally conductive manner to a base region of the round battery cell. In particular, heat can be effectively dissipated from the round battery cell, in particular to the cooling medium flowing through the first or second channel, by winding the winding mandrel.

In particular, the opening is closed by a membrane, wherein the membrane can be pressed and can be at least partially destroyed when the gas of the round cell unit is discharged into the first channel.

The battery device comprises, in particular, at least a plurality of round battery cells, wherein the round battery cells are arranged adjacent to one another and each round battery cell extends with a round battery cell head into the first channel through a respective opening.

In particular, during operation of the battery device, the first channel and, if appropriate, the second channel are acted upon by a cooling medium (e.g. a coolant). During operation of the battery device, heat can be removed from the housing or the temperature of the round battery cells can be regulated by means of a cooling medium.

In particular, it is proposed here that the first channel serves on the one hand to cool or warm at least one round battery cell and on the other hand to discharge components of the round battery cell which may escape from the round battery cell in the event of a crash.

Namely, a combined cooling and degassing system for round battery cells is especially suggested. In this system, the closed cooling system, i.e. the first channel, serves to guide the hot gases generated in the event of damage to the round battery cell or cells in a directed and closed manner to the environment and finally to discharge them safely to the environment. This therefore relates in particular to the functional integration of the two systems, which results in additional weight and installation space advantages in addition to safety advantages.

Another advantage is the possibility of double-sided cooling of the round battery cell on both its end faces, i.e. cooling in the base region by the second channel and cooling in the head region by the first channel. Furthermore, the resulting possibility of omitting the inner, curved heat-conducting plate makes it possible to continue and, if appropriate, to intensify the pressing of the round battery cells with a suitably designed combined cooling and degassing system.

In particular, the second channel is a further first channel which is connected in a thermally conductive manner on one side to the base region of at least one round battery cell and which has at least one opening on the other side for receiving at least one round battery cell head of a further round battery cell.

Round cells are particularly designed with an outwardly shaped round cell head similar to common household AA or AAA batteries. The round battery cell head is introduced into a cooling medium line structure, i.e. a first channel, which is provided with openings, preferably bores, in a form-fitting manner, so that the battery cell body (the actual round battery cell) is located outside the first channel, while the round battery cell head projects into the first channel.

The remaining gap between the round battery cell and the first channel is closed, in particular, with a thermally conductive material, in particular a thermally conductive glue, which is originally provided at this location for an improved heat conduction process.

The thermally conductive material thus fulfills both its naturally intended function of improving heat conduction and the additional function of sealing the first channel with respect to the round battery cell, which is required here, in a functionally integrated form. A third function integrated in this connection is to ensure the position of the circular battery cell within the housing.

The first channel or cooling system has an inlet channel or an outlet channel (inlet or outlet), in particular on both sides. In a normal state, the cooling medium is supplied or discharged through the inlet or the outlet, and the circular battery cell components (e.g., gas) escaping from the circular battery cells are discharged in a damaged state.

The round cell has a degassing opening (preferably at a nominal weak point in a metal round cell housing) on the round cell head, which is normally closed and only opens upon the occurrence of an event in order to discharge the generated hot gases and electrolyte residues in a directed manner. It is proposed here that the gases and electrolyte residues of the round battery cells are not discharged into the housing but into the closed coolant line structure, i.e. the first channel, in order to be guided in a directed manner and safely from the damaged round battery cells to a safety vent at a battery device or elsewhere in the motor vehicle. Damage to the otherwise circular battery cell or other (electrical) components can thus be prevented.

These outlets can be designed to be closed off from the environment by a membrane or a pressure relief valve in order to discharge the constituents of the round cell into the environment only in the event of degassing.

Since the circular cell head is particularly permanently circulated by the cooling medium when it projects into the first channel, the most efficient direct cooling is present in this region. For thermal management, it is furthermore advantageous to have a winding mandrel, which is directly thermally connected to the latter, in or in the center of the round battery cell and which can in this way additionally cool the round battery cell from the inside.

In particular, the first channel is fluidically connected to at least one vent, wherein, in the event of a battery composition escaping from the at least one round battery cell into the first channel and a limit pressure in the first channel being exceeded, the overpressure can be relieved via the at least one vent. In particular, the venting device is arranged in such a way that the overpressure is relieved at a predeterminable region outside the housing.

In particular, the first channel is fluidically connected to a plurality of exhaust devices, wherein the exhaust devices can be controllably switched such that the components escaping into the first channel can be diverted in a targeted manner toward at least one exhaust device (umleitbar). It is thus possible to avoid the other round battery cells from being damaged by discharging the components escaping from the round battery cells out of the housing through the first channel, for example along the shortest possible path.

The opening, preferably a bore, in the first channel can be closed, in particular, with an additional membrane. The membrane can be designed very thin, since in the normal state it is pressed against the directly abutting round cell head by the internal pressure of the cooling system, i.e. the pressure of the cooling medium present in the first channel. This is advantageous insofar as the membrane or the damage to the membrane may have been designed for a small pressure difference and the opening is opened quickly and early, which corresponds to or results in a quick discharge of the round cell components (e.g. gas). In particular, the membrane design may only take into account degassing requirements. In the event of degassing, i.e. in the event of damage to the round cell, the degassing opening of the round cell on the round cell head is opened and, due to the resulting pressure difference over the membrane, the membrane deforms into the structurally vacant first channel until the membrane is finally destroyed and the opening is opened relative to the first channel. The advantage of this additional membrane is the additional sealing function of the cooling system with respect to the round battery cells, i.e. a redundant sealing design in parallel with the thermally conductive glue.

With the proposed battery device, the advantages of round battery cells in a battery system can still be fully utilized, and at the same time its high load-bearing capacity can additionally be used. This increases, on the one hand, the safety of the battery system and thus also of the vehicle in which such a battery system is installed, and on the other hand enables a more efficient battery system. Furthermore, in addition to injection molding, 3D printing can be used as a production process, which enables an additional degree of freedom in the design of the structure production, for example of the first channel and, if appropriate, of the second channel and its openings, and which can likewise be rapid and inexpensive. The most important advantages are the (very) high speed and the very high degree of automation of the process, which can be achieved by means of the developed constructional detail design. Therefore, the manufacture of the battery device constituted by the circular battery cells can be quickly and inexpensively achieved, and thus the individual cost advantage of the circular battery cells can be maintained. Therefore, the battery device is also price competitive in terms of its assembly, compared to pouch battery cell modules and modules having prismatic battery cells.

Furthermore, a method for operating the battery device is proposed. The battery device comprises a control unit, by means of which at least one gas discharge device, preferably a plurality of gas discharge devices, can be switched in a controlled manner. The first channel of the battery device is fluidically connected to a plurality of gas discharge devices, wherein the gas discharge devices can be controllably switched by the controller in such a way that the battery components escaping into the first channel can be diverted in a targeted manner to at least one gas discharge device.

The battery device therefore comprises, in particular, a controller which is equipped, configured or programmed in order to carry out the described method, i.e. to switch at least one exhaust device in a targeted manner.

Furthermore, the method can also be implemented by a computer or by means of a processor of a control unit.

Therefore, a system for data processing is also suggested, the system comprising a processor adapted/configured to implement the method.

A computer-readable storage medium may be provided that includes instructions which, when executed by a computer/processor, allow the computer/processor to implement the method.

Embodiments relating to the method can be transferred in particular to a battery device or a computer-implemented method (i.e. a computer or a processor, a system for data processing, a computer-readable storage medium), whereas embodiments relating to a battery device or a computer-implemented method can also be transferred to the method.

The use of the indefinite articles "a" and "an" in particular in the claims and in the specification describing the claims is to be understood as such and not as a numerical word. Accordingly, the terms or components introduced accordingly are to be understood in such a way that they occur at least once and in particular also several times.

It should be noted that the terms "first", "second", etc. are used herein first of all (only) to distinguish one object, dimension or procedure from another, i.e. especially not to enforce a relation and/or order of these objects, dimensions or procedures with respect to each other. If dependency and/or order is required, it is expressly stated herein or is obvious to one of ordinary skill in the art in studying the specifically described designs. If a component can appear multiple times ("at least one"), then the description of one of the components can apply equally to all or most of the components, but this is not mandatory.

Drawings

The invention and the technical environment are explained in more detail below with reference to the drawings. It should be noted that the present invention should not be limited by the illustrated embodiments. In particular, if not explicitly stated otherwise, parts of the facts described in the figures can also be extracted and combined with other constituents and knowledge in the description. It should be noted in particular that the drawings and in particular the dimensional proportions shown are purely schematic. In the drawings:

fig. 1 shows a cross section of a battery device with vertical round battery cells in a side view;

fig. 2 shows the battery device according to fig. 1 in the event of damage;

fig. 3 shows a cross section of a battery device with horizontal round battery cells in a side view;

fig. 4 shows a section of a battery device (for example with vertical round battery cells) in a top view; and

fig. 5 shows the battery device according to fig. 4 in the event of damage.

Detailed Description

Fig. 1 shows a cross section of a battery device 1 with a vertical round battery cell 3 in a side view. Fig. 2 shows the battery device 1 according to fig. 1 in the event of damage. Fig. 1 and 2 are collectively described below.

The battery device 1 comprises a housing 2 and a round battery cell 3 arranged therein, which extends from a base region 4 with a cylindrical battery cell body 5 along a longitudinal axis 6 to a head region 7 and on which head region 7 a round battery cell head 9 projects in the direction of the longitudinal axis 6 relative to a head region end face 8, and a first channel 10 which extends from an inlet 11 through the housing 2 to an outlet 12. The first channel 10 has an opening 13 through which the round cell head 9 extends into the first channel 10, so that in the event of damage (see fig. 2) the gas of at least one round cell 3 is expelled into the first channel 10 by the round cell head 9.

Starting from the base region 4, the round battery cell 3 extends along a longitudinal axis 6 with a cylindrical battery cell body 5 to a head region 7 and has a round battery cell head 9 on the head region 7, which projects in the direction of the longitudinal axis 6 relative to a head region end face 8. The cell main body 5 is composed of a plurality of electrode sheets (anode and cathode) and separators. The layers and the separator are first arranged in a stack and then wound around each other about the longitudinal axis 6, so that a cylindrical cell body 5 is formed. The cell body 5 has a constant cross section or cross sectional area along the longitudinal axis 6, so that the base region end face and the head region end face 8 in the base region 4 have the same dimensions.

The round battery cell 3 has a round battery cell head 9 on the head region 7. The circular cell head has a smaller cross section transverse to the longitudinal axis 6 than the cell body 5 or the head region end face 8. The circular cell head 9 is arranged substantially concentrically with respect to the head region end face 8 or the cell body 5 or the longitudinal axis 6.

In the event of a damage or a crash, components 20 of the round cell 3, for example gases and/or electrolyte residues, are discharged from the round cell 3 through the round cell head 9.

A first channel 10 is also arranged in the housing 2. The first channel has an opening 13 for each circular battery cell 3 arranged thereon, through which opening the respective circular battery cell head 9 extends into the first channel 10. The components 20 of the round battery cells 3 can be discharged into the first channel 10 via the respective round battery cell head 9, so that they cannot escape into the housing 2 and damage other round battery cells 3 located therein.

The round battery cells 3 are arranged in the battery device 1 in a neutral manner and are therefore arranged in relation to the environment and in relation to the direction of gravity in operation of the battery device 1.

A thermally conductive material 14 is arranged between the head region end face 8 and the first channel 10. The thermally conductive material 14 enables particularly good heat dissipation from the round battery cells 3 to the first channel 10 or to the cooling medium 18 flowing through the first channel 10.

The opening 13 is sealed, for example fluid-tight or gas-tight, with respect to the housing 2 by a thermally conductive material 14. That is, the separation of the volume arranged within the first channel 10 with respect to the volume arranged within the housing 2 but outside the first channel 10 and the respective circular battery cell 3 is achieved by the thermally conductive material 14.

The base region 4 of the round battery cell 3 is connected in a thermally conductive manner to the second channel 15.

The round battery cell 3 has a winding mandrel 16 extending along the longitudinal axis 6, wherein the winding mandrel 16 is connected in a thermally conductive manner to the round battery cell head 9. The winding mandrel 16 is also connected to the seating area 4 of the circular battery unit 3, so that heat can be efficiently discharged from the circular battery unit 3 to the cooling medium 18 flowing through the first channel 10 or the second channel 15 by the winding mandrel 16.

The opening 13 is closed by a membrane 17, wherein the membrane 17 can be pressed and can be at least partially broken when the gas of the round cell 3 is discharged into the first channel 10.

During operation of the battery device 1, the first channel 10 and the second channel 15 are acted upon by a cooling medium 18 (e.g. a coolant). During operation of the battery device 1, heat can be removed from the housing 2 or the temperature of the round battery cells 3 can be regulated by the cooling medium 18.

The first channel 10 serves on the one hand to cool or temper the round battery cell 3 and on the other hand to discharge components 20 of the round battery cell 3 which may escape from the round battery cell 3 in the event of a crash.

In this combined cooling and degassing system for the circular battery cells 3, the closed cooling system, i.e. the first channel 10, serves to guide the hot gases or components 20 of the generated circular battery cells 3 in the event of damage to one or more circular battery cells 3 in a directed and closed manner towards the environment 22 and finally safely out into the environment.

The first channel 10 or cooling system has an inlet 11 and an outlet 12 on both sides of the housing 2. Through which the cooling medium 18 is fed or discharged in a normal state, and the components 20 escaping from the circular battery cells 3 are discharged in a damaged state.

The first channel 10 is fluidically connected to a vent 19, wherein, in the event of a composition 20 of the round battery cells 3 escaping from the at least one round battery cell 3 into the first channel 10 and a limit pressure 21 in the first channel 10 being exceeded, an overpressure can be released into the environment 22 via the vent 19. The venting device 19 is arranged in such a way that the overpressure is relieved at a predeterminable region outside the housing 2.

In this case, the first channel 10 is fluidically connected to a plurality of degassing devices 19, wherein these degassing devices can be controllably switched by a controller 23 in such a way that the components 20 of the round battery cells 3 escaping into the first channel 10 can be diverted in a targeted manner toward at least one degassing device 19. It is thus possible to avoid the other round battery cells 3 from being damaged by discharging the components 20 escaping from the round battery cells 3 out of the housing 2 through the first channel 10, for example along the shortest possible path.

Fig. 3 shows a cross section of a battery device 1 with horizontal round battery cells 3 in a side view. Reference is made herein to the description relating to fig. 1 and 2.

Here, a plurality of circular battery cells 3 are arranged one above the other. The circular battery cells 3 extend with their head region end faces 8 into the first channel 10. Further stacks of circular battery cells 3 are arranged within the housing 2. The stacks arranged adjacent to one another are arranged such that the round cell 3 of one stack is arranged with the head region 7 adjoining the first channel 10, while the round cell 3 of the other stack is arranged with the base region 4 adjoining the same channel, which is then referred to as the second channel 15. The individual first channels 10 are connected in terms of flow technology to a common inlet 11 and a common outlet 12.

Fig. 4 shows a section of a battery device 1 with a vertical round battery cell 3 in a plan view. Fig. 5 shows the battery device 1 according to fig. 4 in the event of damage. Fig. 4 and 5 are collectively described below. Reference is made herein to the description relating to fig. 1 to 3.

Unlike fig. 1 and 2, a plurality of first circular battery cells 3 are vertically arranged adjacent to each other.

A first channel 10 is arranged in the housing 2. The first channel has an opening 13 for each circular battery cell 3 arranged thereon, through which opening the respective circular battery cell head 9 extends into the first channel 10. The components 20 of the round battery cells 3 can be discharged into the first channel 10 via the respective round battery cell head 9, so that they cannot escape into the housing 2 and damage other round battery cells 3 located therein.

The opening 13 of the round cell 3 is closed by a membrane 17, wherein the membrane 17 can be pressed and can be at least partially broken when the gas of the round cell 3 is removed into the first channel 10.

List of reference numerals

1 Battery device

2 casing

3 circular battery unit

4 base area

5 Battery cell body

6 longitudinal axis

7 head region

8 head region end face

9 round battery cell head

10 first channel

11 inlet

12 outlet

13 opening

14 heat conducting material

15 second channel

16 winding mandrel

17 film

18 cooling medium

19 air exhaust device

20 component (A)

21 ultimate pressure

22 environment

23 controller

Claims

1. A battery device (1) comprising at least:

a housing (2) and at least one round battery cell (3) arranged therein, which extends from a base region (4) with a cylindrical battery cell body (5) along a longitudinal axis (6) to a head region (7) and has a round battery cell head (9) on the head region (7) projecting in the direction of the longitudinal axis (6) relative to a head region end face (8), and

-a first passage (10) extending through the housing (2) from an inlet (11) to an outlet (12);

wherein the first channel (10) has at least one opening (13) through which the circular cell head (9) extends into the first channel (10); so that the gas of the at least one round cell (3) is expelled into the first channel (10) by the round cell head (9).

2. The battery device (1) according to claim 1, wherein a thermally conductive material (14) is arranged between the head region end face (8) and the first channel (10).

3. The battery device (1) according to claim 2, wherein the opening (13) is sealed with respect to the housing (2) by the thermally conductive material (14).

4. Battery device (1) according to any of the preceding claims, wherein the base area (4) is thermally conductively connected with a second channel (15).

5. Battery device (1) according to one of the preceding claims, wherein the round battery unit (3) has a winding mandrel (16) extending along the longitudinal axis (5), wherein the winding mandrel (16) is connected thermally conductively with the round battery unit head (9).

6. Battery device (1) according to one of the preceding claims, wherein the opening (13) is closed by a membrane (17), wherein the membrane (17) can be pressed and can be at least partially broken with the gas of the round cell (3) being expelled into the first channel (10).

7. The battery device (1) according to any of the preceding claims, comprising at least a plurality of circular battery cells (3), wherein the plurality of circular battery cells (3) are arranged adjacent to each other and each circular battery cell (3) extends with a circular battery cell head (9) through a respective opening (13) into the first channel (10).

8. The battery device (1) according to any one of the preceding claims, wherein the first channel (10) is loaded with a cooling medium (18) during operation of the battery device (1).

9. Battery device (1) according to one of the preceding claims, wherein the first channel (10) is flow-technically connected with at least one venting device (19), wherein in case a component (20) of a round battery cell (3) escapes from the at least one round battery cell (3) into the first channel (10) and in case a limit pressure (21) in the first channel (10) is exceeded, an overpressure can be released by the at least one venting device (19).

10. Battery device (1) according to claim 9, wherein the channels are flow-technically connected to a plurality of venting devices (19), wherein at least some of the venting devices (19) can be controllably switched such that the battery components (20) escaping into the first channel (10) can be deliberately bypassed toward at least one venting device (19).