DE102021005767A1 - Battery module for a battery and battery - Google Patents

Abstract

The invention relates to a battery module (10) for a battery (100), in particular for a high-voltage battery (100) of an electrically driven vehicle (200), with a plurality of battery cells (20), the individual battery cells (20) on one flexible strap (30), the strap (30) having at least electrical cables (32, 34) for contacting the battery cells (20), the battery cells (20) being connected in series with the electrical cables (32, 34) and/or or are electrically connected in parallel, with electrical insulation (40) with an elastic insulation material being provided enveloping the battery cells (20) and/or the belt (30).The invention also relates to a battery (100) with at least one battery module (10) .

Description

The invention relates to a battery module for a battery, in particular for a high-voltage battery of an electrically driven or at least partially electrically driven vehicle, and a battery with at least one such battery module.

The range of electric vehicles is essentially determined by two design fields: the efficiency and thus the consumption in kWh/100 km on the one hand and the usable installed battery capacity of the vehicle on the other. In the case of relatively large and heavy vehicles in particular, efforts are therefore being made to accommodate as high an installed battery capacity as possible in the vehicle. Various potential battery installation spaces are currently known, e.g.

Battery cells are usually interconnected in cubic battery modules and monitored by a battery management system (BMS). The modules are arranged and interconnected in a battery housing to form a battery pack. Due to the properties of today's standard battery cells, they must not be subjected to mechanical stress or even deformed. This results in a rigid, less flexible arrangement of the battery cells in the battery system and a heavy, robust housing. As a rule, the battery cells cannot move away and must therefore be protected against mechanical stress.

The DE 102016117223 A1 to this end discloses a vehicle rocker panel reinforcement including a first elongate member and a second elongate member. Both the first elongate member and the second elongate member include ledges and walls arranged in an alternating arrangement along an axis. The walls of the first elongate member are fixed to the walls of the second elongate member.

The ledges of the first elongate member and the ledges of the second elongate member are aligned along the axis and define cavities therebetween. The sill reinforcement ledges and walls resist crushing in response to both vertical and horizontal components of an impact force applied to the sill reinforcement.

An object of the invention is to create a battery module for a battery, which can be accommodated in a protected space of the vehicle.

A further object is to create a battery with at least one such battery module, which can be accommodated in a protected space in the vehicle.

The aforementioned objects are solved with the features of the independent claims.

Favorable configurations and advantages of the invention result from the further claims, the description and the drawing.

According to one aspect of the invention, a battery module for a battery is proposed, in particular for a high-voltage battery of an electrically driven vehicle, with a large number of battery cells, with the individual battery cells being fixed to a flexible belt. The belt has at least electrical cables for contacting the battery cells. The battery cells are electrically connected to the electrical cables in series and/or in parallel. Electrical insulation with an elastic insulation material is provided encasing the battery cells and/or the belt.

The individual battery cells are attached to a flexible belt, similar to an ammunition belt. The electrical connection to the high-voltage vehicle electrical system, to signal lines and optionally to the cooling of the cells is made via the seat belt. Electrical contacts, belt, cells and insulating casing form a battery module.

The electrical lines of the belt are designed to be flexible and allow the battery modules to be arranged flexibly in an existing space that may also be fissured.

The battery module can also be cooled by means of a cooling medium flowing around it. This enables greater functional reliability, since the cooling medium does not have to be routed through the movable belt and the contact surface for heat transfer is larger when the cooling medium flows around it.

The battery cells can be prismatic or round. However, other battery cell shapes are also possible. The battery module is encased in an elastic insulating material for electrical insulation.

This advantageously results in variable use for the battery modules. When designing the battery concept, one possible goal is to reduce variant costs and get by with one or as few battery modules as possible. Ideally, a large number of geometric battery variants (housing for men) can be realized because the belts can be laid flexibly, even in complex geometries.

The proposed battery module is advantageously suitable for a cooling medium that flows around it.

In the event of a technical defect in one of the battery modules, they can be easily replaced, since the standard modules can be used flexibly in a wide variety of battery designs. This reduces warehousing and the associated costs.

The nesting of the battery modules favorably results in a high power density of the battery modules. A high power density can be achieved for the high-voltage battery, since even rugged installation spaces can be filled cheaply. This results in a significant packaging advantage for the battery.

Various voltage levels can be implemented in one module by different wiring (parallel or series connection) and varying the number of battery cells. A certain number of battery modules can be connected together in the contact rail to achieve a certain voltage level.

If, for example, the batteries are used stationary after they have been used in the vehicle, the so-called second life as a storage and buffer battery, it is possible to remove the modules and continue to use them in a new geometric position in a different housing.

According to an advantageous embodiment of the battery module, the belt can have at least one coolant line for cooling the battery cells. In particular, the at least one coolant line can be integrated in the belt. In this way, the greatest possible flexibility can be achieved when accommodating the battery modules in a vehicle installation space.

According to an advantageous embodiment of the battery module, the battery cells can be cooled by means of a coolant flowing around the battery cells. In particular, the battery cells can be cooled by the coolant flowing around the cell housing of the battery cells. This enables greater functional reliability, since the cooling medium does not have to be routed through the movable belt and the contact surface for heat transfer is larger when the cooling medium flows around it.

According to an advantageous embodiment of the battery module, the belt can have electrical signal lines, in particular for cell voltage monitoring and/or for cell voltage equalization and/or for temperature monitoring. In this way, the battery modules can be accommodated as cheaply as possible in different installation spaces and operated safely.

According to an advantageous embodiment of the battery module, the electrical cables of the belt can be designed for contacting via contact points for plugs and/or for screwing to one or more busbars. In this way, the battery modules can be connected to one another in the most flexible manner possible. This type of design is particularly suitable for direct cooling of the battery cells, since the cooling medium does not have to be routed through quick-release couplings.

According to an advantageous embodiment of the battery module, the belt can have elastic spacer elements for clamping attachment in the vehicle and/or in a battery housing.

The elastic materials for clamping can also be attached to the top and/or bottom of the belt. The clamping prevents relative movement of the battery modules in order to avoid damage caused by vibrations caused by vehicle operation. In particular, contact and thus possible chafing between the modules is avoided. In the event of a crash, the clamp can be designed in such a way that when a certain force level is reached, the battery modules become mobile and the existing elasticity between the battery cells and battery modules is used in such a way that the battery modules can be compressed in the direction of the force and damage to the cells is avoided.

According to an advantageous embodiment of the battery module, the battery cells can be arranged on both sides of the belt. Alternatively, the battery cells can be offset from one another on the belt. In addition, the battery cells can be arranged in at least two rows on the belt.

On the belt, the cells can be arranged in one or more rows. In order to increase the packing density, it is possible to provide the modules with gaps so that the modules can be nested. It can be beneficial here to create two or more module variants that can be nested in one another.

According to a further aspect of the invention, a battery with at least one battery mo dul proposed, in particular a high-voltage battery of an electrically powered vehicle, wherein the at least one battery module is arranged in a battery housing. In particular, the at least one battery module can be fixed in the battery housing by means of at least one elastic spacer element, in particular on a top side and/or on a bottom side of the battery module.

After the assembly (arrangement and contacting) of the battery modules in a battery housing, this is closed with a cover and the battery is thus intrinsically safe to handle. The structural shape of the surrounding battery housing can be designed in such a way that the battery modules are clamped in their position and are thus permanently fixed. For this purpose, elastic materials can be arranged on the top and/or bottom of the battery module. It is also possible to glue the modules together, but this leads to greater effort in the event of repairs or when preparing for reuse or further use of the battery modules.

The elastic materials for clamping can also be attached to the top and/or bottom of the belt. The clamping prevents relative movement of the battery modules in order to avoid damage caused by vibrations caused by vehicle operation. In particular, contact and thus possible chafing between the modules is avoided. In the event of a crash, the clamp can be designed in such a way that when a certain force level is reached, the battery modules become mobile and the existing elasticity between the battery cells and battery modules is used in such a way that the battery modules can be compressed in the direction of the force and damage to the cells is avoided.

Further advantages result from the following description of the drawing. In the drawings an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into further meaningful combinations.

• 1 ein Batteriemodul mit an einem flexiblen Gurt angeordneten Batteriezellen mit Anschlussstecker und einem Kühlmittelanschluss nach einem Ausführungsbeispiel der Erfindung;
• 2 ein Batteriemodul mit Kontaktstellen für Verschraubungen zum Anschluss an Stromsammelschienen nach einem weiteren Ausführungsbeispiel der Erfindung;
• 3 mehrere parallel verschaltete Batteriemodule mit einer Kühlung durch Umströmung der Batteriemodule nach einem weiteren Ausführungsbeispiel der Erfindung in schematischer Darstellung;
• 4 eine Prinzipdarstellung in Draufsicht auf ein Fahrzeug mit einer Batterie mit parallel verschalteten Batteriemodulen nach einem weiteren Ausführungsbeispiel der Erfindung;
• 5 eine Prinzipdarstellung in Draufsicht auf ein Batteriemodul mit einer mittigen einreihigen Kabelführung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 6 eine Prinzipdarstellung in Draufsicht auf ein Batteriemodul mit einer zweireihigen Kabelführung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 7 eine Prinzipdarstellung in Draufsicht auf zwei Batteriemodule mit einer zweireihigen Kabelführung mit Versatz der Batteriezellen gegeneinander nach einem weiteren Ausführungsbeispiel der Erfindung;
• 8 eine Prinzipdarstellung in Draufsicht auf zwei Batteriemodule mit einer einreihigen Kabelführung mit Versatz der Batteriezellen gegeneinander nach einem weiteren Ausführungsbeispiel der Erfindung;
• 9 eine Prinzipdarstellung in Draufsicht auf zwei Batteriemodule mit einer einreihigen Kabelführung in gerader Anordnung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 10 eine Prinzipdarstellung in Draufsicht auf zwei Batteriemodule mit einer einreihigen Kabelführung in gekrümmter Anordnung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 11 eine Prinzipdarstellung in Draufsicht auf zwei Batteriemodule mit einer einreihigen Kabelführung in stark gekrümmter Anordnung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 12 eine Prinzipdarstellung in Draufsicht auf ein Batteriemodul mit einer einreihigen Kabelführung in eingerollter Anordnung nach einem weiteren Ausführungsbeispiel der Erfindung;
• 13 eine schematische Darstellung einer Batterie in einem Fahrzeugboden mit Mitteltunnel mit verschieden ausgerichteten Batteriemodulen nach einem weiteren Ausführungsbeispiel der Erfindung;
• 14 einen Längsschnitt durch ein Batteriemodul nach einem weiteren Ausführungsbeispiel der Erfindung, welches mit elastischen Klemmelementen gegen ein Batteriegehäuse verspannt ist; und
• 15 einen Querschnitt durch einen Teil eines Batteriemoduls mit einer in einen flexiblen Gurt des Batteriemoduls integrierten Kühlmittelleitung nach einem weiteren Ausführungsbeispiel der Erfindung.

show:

• 1 a battery module with battery cells arranged on a flexible belt with a connector plug and a coolant connection according to an exemplary embodiment of the invention;
• 2 a battery module with contact points for screw connections for connection to busbars according to a further exemplary embodiment of the invention;
• 3 a plurality of battery modules connected in parallel with cooling by a flow around the battery modules according to a further exemplary embodiment of the invention in a schematic representation;
• 4 a schematic diagram in plan view of a vehicle with a battery with battery modules connected in parallel according to a further exemplary embodiment of the invention;
• 5 a schematic representation in top view of a battery module with a central single-row cable routing according to a further embodiment of the invention;
• 6 a schematic diagram in plan view of a battery module with a two-row cable routing according to a further embodiment of the invention;
• 7 a schematic representation in plan view of two battery modules with a two-row cable routing with offset of the battery cells against each other according to a further embodiment of the invention;
• 8th a schematic diagram in plan view of two battery modules with a single-row cable routing with offset of the battery cells against each other according to a further embodiment of the invention;
• 9 a schematic diagram in plan view of two battery modules with a single-row cable routing in a straight arrangement according to a further embodiment of the invention;
• 10 a schematic representation in plan view of two battery modules with a single-row cable routing in a curved arrangement according to a further embodiment of the invention;
• 11 a schematic representation in top view of two battery modules with a single-row cable routing in a strongly curved arrangement according to a further embodiment of the invention;
• 12 a schematic representation in plan view of a battery module with a single-row cable routing in a rolled arrangement according to a further embodiment of the invention;
• 13 a schematic representation of a battery in a vehicle floor with a central tunnel with differently aligned battery modules according to a further exemplary embodiment of the invention;
• 14 a longitudinal section through a battery module according to a further embodiment of the invention, which is clamped with elastic clamping elements against a battery housing; and
• 15 a cross section through part of a battery module with a coolant line integrated into a flexible belt of the battery module according to a further exemplary embodiment of the invention.

In the figures, the same or similar components are denoted by the same reference symbols. The figures only show examples and are not to be understood as limiting.

1 shows a perspective view of a battery module 10 with battery cells 20 arranged on a flexible belt 30 with a connector plug 42 and a coolant connection 54 according to an exemplary embodiment of the invention.

The battery module 10 for a battery 100, in particular for a high-voltage battery 100 of an electrically driven vehicle 200, comprises a multiplicity of battery cells 20.
The individual battery cells 20 are fixed to a flexible strap 30 . The belt 30 has electrical cables 32, 34 for contacting the battery cells 20. The battery cells 20 can be electrically connected to the electrical cables 32, 34 in series and/or in parallel. In the present exemplary embodiment, the battery cells 20 are connected in parallel to the cables, for example via contact lugs 24 .

The individual battery cells 20 are fixed to the flexible belt 30, similar to an ammunition belt. The electrical connection to the high-voltage vehicle electrical system, to signal lines and optionally to the cooling of the cells 20 is made via the belt 30. Electrical contacts 36, 38, belt 30, battery cells 20 and insulating casing 40 form the battery module 10.

The electrical lines 32, 34 of the belt 30 are designed to be flexible and allow the battery modules 10 to be arranged flexibly in an existing vehicle installation space that may also be rugged.

The battery cells 20 in the exemplary embodiments in FIGS 1 until 15 Battery modules 10 shown are designed in a round shape. However, other battery cell shapes such as prismatic embodiments are also possible.

For the sake of clarity, as in the following exemplary embodiments, only one battery cell 20 is provided with reference symbols.

The battery cells 20 and/or the belt 30 are encased in an elastic insulating material 40 for electrical insulation.

The belt 30 has at least one coolant line 50 for cooling the battery cells 20 . The at least one coolant line 50 is integrated in the belt 30 and is therefore not visible. The coolant line 50 can be connected to a central coolant supply via the coolant connection 54 .

The battery module 10 can also be cooled by means of a cooling medium 52 flowing around it. This enables greater functional reliability, since the cooling medium 52 does not have to be guided through the movable belt 30 and the contact surface for heat transfer is larger when the cooling medium 52 flows around it.

The electrical cables 32, 34, which are also integrated in the belt 30, have a connector plug 42 for connection to a high-voltage vehicle electrical system or to a low-voltage network, in particular for signal lines. For this purpose, the belt 30 has electrical signal lines, in particular for cell voltage monitoring and/or for cell voltage equalization and/or for temperature monitoring.

The belt 30 can have elastic spacer elements 70 for clamping attachment in a vehicle and/or in a battery housing 110, as in the exemplary embodiment in FIG 14 is shown.

As an alternative to the in 1 embodiment shown, the battery cells 20 can be arranged on both sides of the belt 30 . Furthermore, the battery cells 20 can be offset from one another on the belt 30 . Furthermore, the battery cells 20 can be arranged in at least two rows on the belt 30 .

2 shows a battery module 10 with contact points 36, 38 for screw connections 64, 66 for connection to busbars 60, 62 according to a further exemplary embodiment of the invention. Enveloping electrical insulation material is in 2 , as well as signal lines, are omitted to show the electric cables 32, 34 which are elastic.

The cells 20 are connected in parallel via contact lugs 24 to the cables 32, 34. For example, the cable 32 can contact the positive poles of the cells 20, and the cable 34 can contact the negative poles. The cables 32, 34 are laid over the busbars 60, 62 and can be connected to these contact points len 36, 38 are connected via bores with screw connections 64, 66.

In 3 several battery modules 10 connected in parallel are shown schematically in plan view with cooling by a flow around the battery modules 10 according to a further exemplary embodiment of the invention.

As in the previous exemplary embodiments, the battery modules 10 are connected to one another with elastic cables 32, 34 and a flexible belt and can therefore be installed in a curved manner.

The electrical cables 32, 34 of the belt 30 can be designed for contacting via contact points 36, 38 for plugs and/or for screwing to one or more busbars 60, 62.

The battery cells 20 can be cooled, for example, by means of a coolant 52 flowing around the battery cells 20 . The flowing coolant 52 is shown purely schematically as a flowing stream. In particular, the battery cells 20 can be cooled by means of the coolant 52 flowing around the cell housing 22 of the battery cells 20 . For this purpose, the belt 30 can have corresponding openings so that the coolant 52 can come into direct contact with the cell housing 22 .

The battery modules 40 have an enveloping electrical insulation 40 with an elastic insulation material. The coolant 52 can also be passed through this insulation 40 in a suitable manner.

4 FIG. 12 shows a schematic plan view of a vehicle 200 with a battery 100 with battery modules 10 connected in parallel according to a further exemplary embodiment of the invention.

The battery modules 10, which, for example, as in 3 shown, can be formed are arranged on both sides of the vehicle longitudinal axis X in the battery housing 110. Busbars 60, 62 conduct the electrical energy via power electronics with a battery management system, which can be arranged in a drive unit 212, to the electric drive motor 210.

In the 5 until 8th various exemplary embodiments of a basic representation of a battery module 10 are each shown in plan view. The battery cells 20 are each arranged in a flexible belt 30, which is not further detailed.

5 shows a battery module 10 with a central single-row cable routing. In this case, the battery cells are contacted with the electrical cables 32, 34 (only cable 32 is visible), the cables being connected directly to the cell poles 28 in each case.

6 shows a battery module 10 with a two-row cable routing. The battery cells 20 are arranged offset on both sides of the electrical cables 32 , 34 and are connected to the cables 32 , 34 via contact lugs 24 .

7 shows two battery modules 20 with a two-row cable routing with offset of the individual battery cells 20 against each other. As a result, the two battery modules 10 can be packed tightly, since the battery cells 20 of one battery module 10 are arranged in a gap in the other battery module 10 .

8th shows two battery modules 10, each with a single-row cable routing with an offset of the battery cells relative to one another. Even with such a geometric arrangement of the battery cells 20, the battery modules 10 can be packed tightly, since the battery cells 20 of the two battery modules 10 are each arranged with a gap in relation to one another.

The electrical cables 32, 34 in the 5 until 8th The battery modules 10 shown each have contact points 36, 38 (contact point 38 is not visible) with which the cables 32, 34 can be connected to busbars 60, 62 (not shown).

In the 9 until 12 further exemplary embodiments of a basic representation of a battery module 10 are each shown in plan view, in which a possible width scaling when installed in a battery housing 110 can be seen. Only a section of a housing wall 114 of the battery housing 110 is shown in each case. Different housing widths of battery housings 110 can each be defined via vehicle dimensions and crash requirements.

9 shows two battery modules 10 with a single-row cable routing in a straight arrangement. The electrical cables 32, 34 are each connected to busbars 60, 62 via contact points 36.

10 shows two battery modules 10 with a single-row cable routing in a curved arrangement. As a result, the battery modules 10 can be arranged in a narrower battery housing 110 .

11 shows two battery modules 10 with a single-row cable routing in a strongly curved arrangement. As a result, the battery modules 10 can be arranged in an even narrower battery housing 110 .

12 shows a battery module 10 with a single-row cable routing in a rolled arrangement. In this way, the battery module 10 can be accommodated in a very narrow battery housing 110 .

In 13 1 is a schematic representation of a battery 100 in a vehicle floor with a center tunnel with differently aligned battery modules 10 according to a further exemplary embodiment of the invention.

The battery modules 10 can be arranged in any position in the vehicle 200 . In the main battery installation space in the vehicle floor, the battery cells 20 can, for example, be positioned predominantly with an orientation parallel to the vertical axis Z of the vehicle. In the center tunnel installation space, the battery cells 20 can be aligned parallel to the longitudinal direction X of the vehicle, for example. The respective bus bars can be shaped accordingly in order to connect the battery modules 10 .

14 shows a longitudinal section through a battery module 10 according to a further exemplary embodiment of the invention, which is braced against a battery housing 110 with elastic clamping elements 70 .

The at least one battery module 10 is arranged in a battery housing 110 and fixed in the battery housing 110 by means of at least one elastic spacer element 70, 72, in particular on an upper side 12 and/or on an underside 14 of the battery module 10. The battery module 10 is clamped with the elastic clamping elements 70 against the bottom of the battery housing 110 and with the elastic clamping elements 72 against the housing cover 112 .

The battery module 10 has a flexible belt 30 with insulation 40 in which the battery cells 20, the electrical cables 32, 34 and a channel of a coolant line 50 are arranged. The battery cells 20 are electrically connected to the cables 32 , 34 via contact lugs 24 , 26 .

15 shows a cross section through part of a battery module 10 with a coolant line 50 integrated into a flexible belt 30 of the battery module 10 according to a further exemplary embodiment of the invention.

The belt 30, which is made of a flexible, electrically insulating material, includes the battery cell 20. The electrical cable 32 and a coolant line 50 are integrated in the belt 30. The coolant 52 flowing in the coolant line 50 flows around the battery cell 20 on an outside of the cell housing 22 over a large part of the circumference of the cell housing 22, as a result of which effective cooling of the battery cell 20 is possible. The battery cell 20 is electrically connected to the electrical cable 32 via a contact lug 24 .

Reference List

10

battery module

12

top

14

bottom

20

battery cell

22

cell case

24

contact flag

26

contact flag

28

cell pole

30

belt

32

Cable

34

Cable

36

contact point

38

contact point

40

insulation

42

connector plug

50

coolant line

52

coolant

54

coolant connection

60

busbar

62

busbar

64

screw connection

66

screw connection

70

spacer element

72

spacer element

100

battery

110

battery case

112

housing cover

114

housing wall

200

vehicle

210

drive

212

power electronics

X

vehicle longitudinal axis

Z

vehicle vertical axis

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102016117223 A1 [0004]

Claims (10)

Battery module (10) for a battery (100), in particular for a high-voltage battery (100) of an electrically driven vehicle (200), with a large number of battery cells (20), wherein the individual battery cells (20) are fixed to a flexible strap (30), the strap (30) having at least electrical cables (32, 34) for contacting the battery cells (20), wherein the battery cells (20) are electrically connected to the electrical cables (32, 34) in series and/or in parallel, wherein an electrical insulation (40) with an elastic insulating material is provided enveloping the battery cells (20) and/or the belt (30). battery module after claim 1 , wherein the belt (30) has at least one coolant line (50) for cooling the battery cells (20), in particular wherein the at least one coolant line (50) is integrated in the belt (30). battery module after claim 1 or 2 , wherein the battery cells (20) are cooled by means of a coolant (52) flowing around the battery cells (20), in particular wherein the battery cells (20) are cooled by means of the coolant (52 ) he follows. Battery module according to one of the preceding claims, wherein the belt (30) has electrical signal lines, in particular for cell voltage monitoring and/or for cell voltage equalization and/or for temperature monitoring. Battery module according to one of the preceding claims, wherein the electrical cables (32, 34) of the belt (30) are designed for contacting via contact points (36, 38) for plugs and/or for screwing to one or more busbars (60, 62). . Battery module according to one of the preceding claims, wherein the belt (30) has elastic spacer elements (70) for a clamping attachment in the vehicle and/or in a battery housing (110). Battery module according to one of the preceding claims, wherein the battery cells (20) are arranged on both sides of the belt (30). Battery module according to one of the preceding claims, wherein the battery cells (20) are offset from one another on the belt (30). Battery module according to one of the preceding claims, wherein the battery cells (20) are arranged in at least two rows on the belt (30). Battery (100) with at least one battery module (10), in particular high-voltage battery (100) of an electrically driven vehicle (200), according to one of the preceding claims, wherein the at least one battery module (10) is arranged in a battery housing (110), In particular, the at least one battery module (10) being fixed in the battery housing (110) by means of at least one elastic spacer element (70, 72), in particular on an upper side (12) and/or on an underside (14) of the battery module (10). .

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