Battery module and assembly with busbar cooling

Abstract

The invention relates to a battery module (M1) comprising a main body (11) having a first cavity (101) and a second cavity (102), the first cavity (101) and the second cavity (102) respectively defining a first internal surface (S1) and a first internal volume (V1) and a second internal surface (S2) and a second internal volume (V2), - a first primary electrical connector (12) extending from the first internal surface (S1) into the first internal volume (V1), and - a second primary electrical connector (13) extending from the second internal surface (S2) of the second cavity (102) into the second internal volume (V2), the first primary electrical connector (12) and the second primary electrical connector (13) each being configured to cooperate with a secondary electrical connector external to the module (M1, M2).The invention further relates to an assembly of two modules and a battery comprising the assembly and an electric vehicle comprising the battery. Figure 2.

Description

Title of the invention: Module and assembly for battery with busbar cooling. Technical field of the invention

[0001] The present invention relates to the field of batteries. In particular, the invention relates to a battery module and an assembly of at least two battery modules. The invention also relates to the battery comprising the assembly and the electric vehicle comprising the battery. State of the art

[0002] The assembly of modules within a battery relies on an efficient electrical infrastructure to ensure energy distribution and current flow management. Busbars, also called "omnibus bars" or "bus-buses," play an important role in this architecture by facilitating the connection of the various components. Busbars, rigid metallic conductors, often made of copper or aluminum, allow several modules to be connected while minimizing energy losses and withstanding high current intensities. Their use not only contributes to improving the efficiency of energy storage systems, but also to simplifying the design, maintenance, and reliability of batteries, particularly in industrial applications, such as in the automotive industry.

[0003] Traditionally, busbars are positioned on top of the modules and secured with screws. This configuration has several drawbacks, including the lack of cooling for the busbars and the difficulty for an operator to access terminals before assembly. Furthermore, the modules manufactured using this method do not meet the IPXXB standard before being assembled with other modules in a battery assembly. In addition, screwing operations in a 400V high-voltage area are delicate and require cumbersome personal protective equipment, thus increasing the risk of errors and injuries.

[0004] Object of the invention

[0005] The present invention aims to provide a solution that addresses all or part of the aforementioned problems.

[0006] This goal can be achieved through the implementation of a battery module comprising: - a principal body having a first cavity and a second cavity, the first cavity and the second cavity respectively defining a first internal surface and a first internal volume and a second internal surface and a second internal volume, - a first primary electrical connector that extends from the first internal surface into the first internal volume of the first cavity, and - a second primary electrical connector that extends from the second internal surface of the second cavity into the second internal volume of the second cavity, the first primary electrical connector and the second primary electrical connector are each configured to cooperate with a secondary electrical connector external to the module.

[0007] Advantageously, the module has an IPXXB protection rating without requiring any additional protective components such as a protective cap.

[0008] The module may also have one or more of the following characteristics, taken alone or in combination.

[0009] According to a feature of the module, the first primary electrical connector extends longitudinally from the first internal surface into the first internal volume of the first cavity such that a longitudinal dimension of the first primary electrical connector is less than a longitudinal dimension of the first cavity, and the second primary electrical connector extends longitudinally from the second internal surface into the second internal volume of the second cavity such that a longitudinal dimension of the second primary electrical connector is less than a longitudinal dimension of the second cavity.

[0010] The longitudinal dimension of each cavity can be defined as the distance between a bottom of the cavity and an opening of the cavity. In other words, the longitudinal dimension is the depth of the cavity.

[0011] Advantageously, the module provides IPXXB protection according to EN 60529 in an economical manner and without requiring additional protection components.

[0012] According to a feature of the module, the first cavity and the second cavity each have a transverse dimension orthogonal to the longitudinal dimension, the transverse dimension of the first cavity and the transverse dimension of the second cavity each being less than 12 mm.

[0013] The transverse dimension of the first cavity and the second cavity can be defined as an opening of the cavity.

[0014] Advantageously, the transverse dimension of less than 12 mm prevents an operator from inserting a finger into contact with the primary electrical connector and reduces Therefore, there is a risk of electrocution. The transverse dimension of less than 12mm also allows the module to have an IPXXB protection rating.

[0015] According to a feature of the module, the longitudinal dimension of the first cavity is at least 80 mm greater than the longitudinal dimension of the first primary electrical connector, and the longitudinal dimension of the second cavity is at least 80 mm greater than the longitudinal dimension of the second primary electrical connector.

[0016] Advantageously, the fact that the longitudinal dimension of each of the cavities is at least 80 mm greater than the longitudinal dimension of each of the primary electrical connectors ensures that an operator's finger does not come into contact with the primary electrical connector and also allows the module to have an IPXXB protection rating.

[0017] The module is configured to have an IPXXB protection rating according to standard EN 60529.

[0018] The invention also relates to a battery assembly comprising: - a first module as described above, - a second module as described above, and - a busbar comprising a first secondary electrical connector complementary to the first primary electrical connector and a second secondary electrical connector complementary to the second primary electrical connector, the busbar electrically connecting the first module and the second module when the first primary electrical connector cooperates with the first secondary electrical connector and the second primary electrical connector cooperates with the second secondary electrical connector.

[0019] Advantageously, the assembly has an IPXXB protection rating while reducing the number of components needed to achieve such protection, thus reducing the manufacturing and maintenance cost of the assembly.

[0020] Advantageously, the inter-module electrical connection takes place without screws, thus reducing the risks associated with screwing in critical areas and improving the quality of the inter-module connection.

[0021] According to one feature, the assembly comprises: - a cooling surface disposed, at least in part, in contact with the first module and the second module, and configured to dissipate heat generated in the first module and / or the second module, the busbar system is arranged to allow heat exchange with the cooling surface.

[0022] In other words, the busbar can be, at least in part, in direct contact with the cooling surface or, alternatively, a thermal separator A thermal conductor can be inserted between the cooling surface and the busbar.

[0023] Advantageously, the assembly allows the cooling of the modules to be used to cool the busbar by transferring the heat generated in the modules to the cooling surface, thus increasing the life of the assembly.

[0024] According to a feature of the assembly, each of the first module and second module has a first part disposed at least partly in contact with the cooling surface and in which the first cavity and the second cavity are arranged, and a second part connected to the first part and disposed towards an outside of the module, the busbar electrically connecting the first part of the first module to the first part of the second module.

[0025] The first part and the second part can be made in one piece, in other words the module can be monobloc.

[0026] According to one feature of the assembly, the primary electrical connector is a pin and the secondary electrical connector is a multi-blade contact connector.

[0027] Advantageously, the multiple blades offer a larger contact surface or multiple contact points, which improves the reliability of the electrical connection and reduces the risk of poor contacts, even in the presence of vibrations or movements.

[0028] Thanks to the multiplication of contact points, a multi-blade contact connector can support higher currents than a single-contact connector, which is particularly useful for high-power applications.

[0029] Furthermore, the multiple blades increase the contact surface area, which allows for better dissipation of the heat generated by the current flow. This reduces the risk of overheating at the connection points.

[0030] According to one feature of the assembly, the primary electrical connector is a multi-blade contact connector and the secondary electrical connector is a pin.

[0031] The invention also relates to a battery comprising the assembly described above.

[0032] The invention also relates to an electric vehicle comprising the battery described above.

[0033] Brief description of the drawings

[0034] Other aspects, objectives, advantages and features of the invention will become clearer upon reading the following detailed description of preferred embodiments thereof, given by way of non-limiting example, and made with reference to the accompanying drawings in which:

[0035] [Fig-1] represents an assembly of modules according to the prior art.

[0036] [Fig.2] represents a first embodiment of an assembly of two modules according to the invention.

[0037] [Fig.3] is a detailed view of a cavity arranged in a module according to the first embodiment and of a primary electrical connector which extends into the internal volume of the cavity.

[0038] [Fig.4] presents a top view, a cross-sectional view of the module and a front view of a busbar set according to the first embodiment.

[0039] [Fig.5] is a detailed view of a first primary electrical connector cooperating with a first secondary electrical connector according to the first embodiment.

[0040] [Fig.6] represents a test insertion of a standard test finger into a module according to the first embodiment.

[0041] [Fig.7] represents a second embodiment of an assembly of two modules according to the invention.

[0042] [Fig.8] presents a top view, a cross-sectional view of the module and a front view of a busbar set according to the second embodiment.

[0043] [Fig.9] is a detailed view of a first primary electrical connector which cooperates with a first secondary electrical connector according to the second embodiment.

[0044] [Fig. 10] represents a test insertion of a standard test finger into a module according to the second embodiment. Detailed description

[0045] In the figures and throughout the description, the same reference numerals represent identical or similar elements. Furthermore, the various elements are not drawn to scale in order to enhance the clarity of the figures. Moreover, the different embodiments and variants are not mutually exclusive and may be combined.

[0046] Figure 1 shows an example of the prior art of a module assembly for a battery. A busbar 210 is arranged between a first module Mx and a second module My. The busbar 210 electrically connects the first module Mx to the second module My. In the example of Figure 1, the modules Mx, My, and Mz each have an upper face 311 facing the exterior of the battery, for example, towards the interior of an electric vehicle, and a lower face 312 facing a floor 310, for example, the floor of a battery casing, or, for example, the floor of an electric vehicle. The busbar 310 is arranged on the side of the upper face 311, and, for example, at least partially in contact with the upper face 311, as can be seen in Figure 1. In the example shown in [Fig. 1], the busbar 210 is attached to the Mx, My modules by screws. The busbar 310 is therefore positioned on the top side to allow access for a screwdriver. Furthermore, the busbar 210 is not cooled because it is not in contact with a cooling surface. An operator can also place their hand directly on the busbar 210; consequently, the assembly in [Fig. 1] does not have an IPXXB protection rating. Therefore, the assembly of the Mx, My modules cannot be handled without protective equipment, which represents a significant constraint.

[0047] The invention relates to a module M1, M2 for a battery and to an assembly of modules M1, M2. A first embodiment of the module M1, M2 and of the assembly of 1000 modules M1, M2 is shown in Figures 2 to 6. A second embodiment is shown in Figures 7 to 10.

[0048] As can be seen in figures 2 to 10, the module M1, M2 comprises a main body 11 having a first cavity 101 and a second cavity 102.

[0049] In other words, the first cavity 101 and the second cavity 102 are arranged in the main body 11 of each module M1, M2.

[0050] The first cavity 101 can be identical to the second cavity 102, in other words the first cavity 101 can have the same dimensions as the second cavity 102.

[0051] Modules M1 and M2 can be identical and therefore everything that applies to one module applies to the other.

[0052] The first cavity 101 and the second cavity 102 define respectively a first internal surface SI and a first internal volume VI and a second internal surface S2 and a second internal volume V2.

[0053] A first primary electrical connector 12 extends from the first internal surface SI into the first internal volume VI of the first cavity 101.

[0054] A second primary electrical connector 13 extends from the second internal surface S2 of the second cavity 102 into the second internal volume V2 of the second cavity 102.

[0055] The first primary electrical connector 12 and the second primary electrical connector 13 are each configured to cooperate with an external secondary electrical connector to the module M1, M2.

[0056] Figures 5 and 9 show the first primary electrical connector 12 in cooperation with the first secondary electrical connector 21.

[0057] In the first embodiment shown in [Fig.5], the first secondary electrical connector 21 exerts a mechanical stress on the first primary electrical connector 12.

[0058] In the second embodiment shown in [Fig.9], the first primary electrical connector 12 exerts a mechanical stress on the first secondary electrical connector 12.

[0059] The first primary electrical connector 12 can extend longitudinally from the first internal surface SI into the first internal volume VI of the first cavity 101 as can be seen in Figures 2, 3, 7 and 9.

[0060] The second primary electrical connector 13 can extend longitudinally from the second internal surface S2 and into the second internal volume V2 of the second cavity 102.

[0061] By “longitudinally”, we mean along the Z axis as shown in [Fig.3].

[0062] As can be seen in [Fig.3], a longitudinal dimension Zc of the first primary electrical connector 12 may be less than a longitudinal dimension Zh of the first cavity 101.

[0063] Similarly, a longitudinal dimension Zc of the second primary electrical connector 13 may be less than a longitudinal dimension Zh of the second cavity 102.

[0064] The longitudinal dimension Zc of the first primary electrical connector 12 can be a length of the first primary electrical connector 12.

[0065] Similarly, the longitudinal dimension Zc of the second primary electrical connector 13 can be a length of the second primary electrical connector 13.

[0066] The longitudinal dimension Zh of the first cavity 101 can be a depth of the cavity 101. The same applies to the second cavity 102. In other words, the longitudinal dimension Zh of each cavity between the first cavity 101 and the second cavity 102 can be defined as the distance Zh between a bottom of the cavity and an opening of the cavity as shown in [Fig.3].

[0067] The length of the first primary electrical connector 12 and the length of the second primary electrical connector 13 can therefore be respectively less than the depth of the first cavity 101 and the second cavity 102.

[0068] The first primary electrical connector 12 and the second primary electrical connector 13 may be identical and have the same dimensions.

[0069] The first cavity 101 and the second cavity 102 can each have a transverse dimension Yh orthogonal to the longitudinal dimension Zc.

[0070] The transverse dimension can be the dimension along the Y axis shown in [Fig.3].

[0071] The transverse dimension Yh of the first cavity 101 and the transverse dimension of the second cavity 102 can each be less than 12 mm.

[0072] The transverse dimension Yh of the first cavity 101 or of the second cavity 102 can be defined as an opening of the cavity.

[0073] The transverse dimension of the first cavity 101 and the transverse dimension of the second cavity 102 can be identical.

[0074] Advantageously, the transverse dimension Yh of less than 12 mm prevents an operator from inserting a finger into contact with the primary electrical connector and thus reduces the risk of electric shock. Figures 6 and 10 show an example of a standard IPXXB-type protective finger D. It can be seen in Figures 6 and 10 that the width of finger D is greater than the transverse dimension Yh of the cavity, so that finger D cannot penetrate the internal volume of the cavity, and therefore finger D cannot come into contact with the second primary electrical connector 13. Thus, the transverse dimension Yh of less than 12 mm allows the module M1, M2 to have an IPXXB protection rating.

[0075] The longitudinal dimension Zh of the first cavity 101 can be at least 80 mm greater than the longitudinal dimension Zc of the first primary electrical connector 12, and the longitudinal dimension Zh of the second cavity 102 is at least 80 mm greater than the longitudinal dimension Zc of the second primary electrical connector 13.

[0076] Advantageously, the fact that the longitudinal dimension of each of the cavities is at least 80 mm greater than the longitudinal dimension of each of the primary electrical connectors ensures that an operator's finger does not come into contact with the primary electrical connector and also allows the Ml, M2 module to have an IPXXB protection rating according to EN 60529.

[0077] Advantageously, the Ml, M2 module has an IPXXB protection rating according to EN 60529 without requiring an additional protection component, which makes the Ml, M2 module more economical.

[0078] Advantageously, the Ml, M2 module has an IPXXB protection rating without requiring any additional protective components such as a protective cap.

[0079] Advantageously, the M1,M2 module has an IPXXB protection rating even when the M1,M2 module is not assembled with another module in an intermodule assembly. The M1,M2 module can therefore be handled without cumbersome protective equipment.

[0080] The invention also relates to the battery assembly 1000, an example of which is shown in each of Figures 2 and 7. The assembly 1000 comprises a first module M1 as described above, a second module M2 as described above, and a busbar 200 comprising a first secondary electrical connector 21 complementary to the first primary electrical connector 12 and a second secondary electrical connector 22 complementary to the second primary electrical connector 13.

[0081] By "busbar 200 comprising a first secondary electrical connector 21 and a second secondary electrical connector 22", it is understood that a first secondary electrical connector 21 is fixed, for example by welding, to the busbar 200 and that a second secondary electrical connector 22 is fixed, for example by welding, to the busbar 200.

[0082] The busbar 200 electrically connects the first module M1 and the second module M2 when the first primary electrical connector 12 cooperates with the first secondary electrical connector 21 and the second primary electrical connector 13 cooperates with the second secondary electrical connector 22.

[0083] Advantageously, assembly 1000 has an IPXXB protection rating while reducing the number of components required to achieve such protection, thus reducing the manufacturing and maintenance cost of assembly 1000.

[0084] Advantageously, the inter-module electrical connection takes place without screws, thus reducing the cost of assembly 1000, the risks associated with screwing in critical areas, and improving the quality of the inter-module connection.

[0085] The assembly 1000 may include a cooling surface 300 disposed, at least in part, in contact with the first module M1 and the second module M2, and configured to dissipate heat generated in the first module M1 and / or the second module M2 as can be seen in Figures 2 and 7.

[0086] The cooling surface 300 can be a chilled floor, a water plate, or any other cooling system. In [Fig. 2], arrows II, 12 show the circulation of a cooling fluid along the cooling surface 300.

[0087] The busbar 200 can be arranged to allow heat exchange with the cooling surface 300.

[0088] In other words, the busbar 200 can be, at least in part, directly in contact with the cooling surface 300 or, alternatively, a thermally conductive thermal separator 400 can be inserted between the cooling surface 300 and the busbar 200.

[0089] According to one possibility, the busbar 200 can be cooled, for example in the lower zone, in other words a lower part of the module Ml, M2 which is arranged on the floor side, by a cooling system different from a cooling system intended to cool each of the modules Ml, M2.

[0090] If one of the modules M1, M2 is cooled in the upper zone, in other words half of the module M1, M2 oriented towards the hood of the vehicle, making contact with the housing in the lower zone allows the use of thermal inertia of the lower housing to limit heating of the busbar 200 without there being an integrated cooling system in the lower zone.

[0091] The thermal separator 400 can be a thermal grease, for example a thermal grease deposited in a housing of the module M1, M2.

[0092] Alternatively, the thermal separator 400 can be a thermal cushion.

[0093] The thermal separator 400 can include both a thermal pad and thermal grease.

[0094] Advantageously, the assembly 1000 allows the cooling of the modules M1, M2 to be used to cool the busbar 200 by transferring the heat generated in the modules M1, M2 to the cooling surface 300, thus increasing the service life of the assembly 1000.

[0095] As can be seen in figures 2 and 7, each of the first module M1 and second module M2 can have a first part PI disposed at least in part in contact with the cooling surface 300 and in which the first cavity 101 and the second cavity 102 are arranged. In other words, the first part PI is a lower part disposed on the floor side of the module M1, M2.

[0096] Each of the first module M1 and second module M2 may have a second part P2 connected to the first part PI and disposed towards an exterior of the module M1, M2. In other words, the second part P2 is an upper part which is disposed on the side of an opening of the module, for example towards an interior of an electric vehicle comprising the assembly 1000.

[0097] In other words, the second part P2 of each module M1, M2 is directed towards a hood of the vehicle while the first part PI is directed towards a lower battery casing located on the ground side.

[0098] It is understood that the division of each module M1, M2 into a first part P1 and a second part P2 is theoretical and conceptual and that the division is intended solely to indicate the arrangement of the different components relative to each other. In other words, each of the modules M1, M2 is indivisible.

[0099] The busbar 200 can electrically connect the first PI section of the first module M1 to the first PI section of the second module M2. In other words, the busbar 200 is located on the floor side. Specifically, the busbar 200 is located on the side of the lower part of the modules M1 and M2. Advantageously, the busbar 200 can thus be cooled by the cooling surface 300, which also serves to cool the modules M1 and M2.

[0100] The first part PI and the second part P2 can be made in one part, in other words the module M1, M2 can be monobloc, in other words the main body 11 can be monobloc.

[0101] According to the first embodiment and as can be seen in [Fig.4], the primary electrical connector 12, 13 is a pin and the secondary electrical connector 21, 22 is a multi-blade contact connector.

[0102] By "primary electrical connector" is meant each of the first primary electrical connector 12 and second primary electrical connector 13.

[0103] By "secondary electrical connector" is meant each of the first secondary electrical connector 21 and second secondary electrical connector 22.

[0104] According to the second embodiment and as can be seen in [Fig.8], the primary electrical connector 12, 13 is a multi-blade contact connector and the secondary electrical connector 21, 22 is a pin.

[0105] The pin is configured to cooperate with the multi-blade contact connector so as to permit an electrical connection between the pin and the multi-blade connector.

[0106] The multi-blade contact connector can also be called a tulip-type connector or a multi-contact connector.

[0107] Advantageously, the connection between the pin and the multi-contact connector allows a solid connection that does not require screws, thus eliminating possible screwing defects and / or contact resistance.

[0108] Advantageously, the multiple blades offer a larger contact surface or multiple contact points, which improves the reliability of the electrical connection and reduces the risk of poor contacts, even in the presence of vibrations or movements.

[0109] Thanks to the multiplication of contact points, a multi-blade contact connector can support higher currents than a single-contact connector, which is particularly useful for high-power applications.

[0110] Furthermore, the multiple blades increase the contact surface area, which allows for better dissipation of the heat generated by the passage of current. This reduces the risk of overheating at the connection points.

[0111] A third embodiment can be envisaged in which one of the two primary electrical connectors is a pin and the other of the two primary electrical connectors is a multi-blade contact connector, and one of the two secondary electrical connectors is a pin while the other is a multi-blade contact so as to allow an electrical connection between the busbar 200 and the M1, M2 modules.

[0112] The invention further relates to a battery comprising the assembly as described above, for example, a battery capable of supplying a voltage between 500V and 800V.

[0113] The invention also relates to an electric vehicle comprising the battery as described above.

Claims

Demands

1. Battery module (M1, M2) comprising: - a main body (11) having a first cavity (101) and a second cavity (102), the first cavity (101) and the second cavity (102) respectively defining a first internal surface (S1) and a first internal volume (V1) and a second internal surface (S2) and a second internal volume (V2), - a first primary electrical connector (12) extending from the first internal surface (S1) into the first internal volume (V1) of the first cavity (101), and - a second primary electrical connector (13) extending from the second internal surface (S2) of the second cavity (102) into the second internal volume (V2) of the second cavity (102), the first primary electrical connector (12) and the second primary electrical connector (13) each being configured to cooperate with a secondary electrical connector external to the module (M1, M2).

2. Module (M1, M2) according to claim 1 wherein: - the first primary electrical connector (12) extends longitudinally from the first internal surface (SI) into the first internal volume (VI) of the first cavity (101) such that a longitudinal dimension (Zc) of the first primary electrical connector (12) is less than a longitudinal dimension (Zh) of the first cavity (101), and - the second primary electrical connector (13) extends longitudinally from the second internal surface (S2) into the second internal volume (V2) of the second cavity (102) such that a longitudinal dimension (Zc) of the second primary electrical connector (13) is less than a longitudinal dimension (Zh) of the second cavity (102).

3. Module (M1, M2) according to claim 2 wherein the first cavity (101) and the second cavity (102) each have a transverse dimension (Yh) orthogonal to the longitudinal dimension (Zh), the transverse dimension of the first cavity (101) and the transverse dimension of the second cavity (102) each being less than 12 mm.

4. Module (M1, M2) according to any one of claims 2 or 3 wherein the longitudinal dimension (Zh) of the first cavity (101) is at least 80 mm greater than the longitudinal dimension (Zc) of the first primary electrical connector (12), and the longitudinal dimension (Zh) of the second cavity (102) is at least 80 mm greater than the longitudinal dimension (Zc) of the second primary electrical connector (13).

5. Battery assembly (1000) comprising: - a first module (M1) according to any one of claims 1 to 4, - a second module (M2) according to any one of claims 1 to 4, and - a busbar (200) having a first secondary electrical connector (21) complementary to the first primary electrical connector (12) and a second secondary electrical connector (22) complementary to the second primary electrical connector (13), the busbar (200) electrically connecting the first module (M1) and the second module (M2) when the first primary electrical connector (12) cooperates with the first secondary electrical connector (21) and the second primary electrical connector (13) cooperates with the second secondary electrical connector (22).

6. Assembly according to claim 5 comprising: - a cooling surface (300) disposed, at least in part, in contact with the first module (M1) and the second module (M2), and configured to dissipate heat generated in the first module (M1) and / or the second module (M2), the busbar (200) being arranged so as to permit heat exchange with the cooling surface (300).

7. Assembly according to any one of claims 5 or 6 wherein each of the first module (M1) and second module (M2) has a first part (PI) disposed at least in part in contact with the cooling surface (300) and in which are arranged the first cavity (101) and the second cavity (102), and a second part (P2) connected to the first part (PI) and disposed towards an outside of the module, the busbar (200) electrically connecting the first part (PI) of the first module (M1) to the first part (PI) of the second module (M2).

8. Assembly according to any one of claims 5 to 7 wherein the primary electrical connector (12, 13) is a pin and the secondary electrical connector (21, 22) is a multi-blade contact connector.

9. Assembly according to any one of claims 5 to 7 wherein the primary electrical connector (12, 13) is a multi-blade contact connector and the secondary electrical connector (21, 22) is a pin.

10. Battery comprising the assembly according to any one of claims 5 to Q

11. y. Electric vehicle comprising the battery according to claim 10.

Images