Battery with multi-sided cooling, drive system and motor vehicle

Abstract

Battery (1) for an electric drive system (2) for a motor vehicle (3), comprising several battery cells (4) each with a first current collector (5) and a second current collector (6), a first busbar (7), a second busbar (8) and a battery housing (9), wherein the first busbar (7) and the second busbar (8) are partially covered by an electrically insulating layer (10), and wherein the first current collectors (5) are electrically coupled to the first busbar (7) and the second current collectors (6) are electrically coupled to the second busbar (8), characterized in that the first busbar (7) is arranged on a first side (11) of the battery cells (4) and the second busbar (8) is arranged on a second side (12) of the battery cells (4) that is different from the first side (11),wherein a thermal conductor is arranged between the first busbar (7) and the battery cells (4) and / or the second busbar (8) and the battery cells (4) to improve heat transfer from the battery cells (4) to the respective busbar (7, 8).

Description

[0001] The present invention relates to a battery for an electric drive system for a motor vehicle. Furthermore, the invention relates to an electric drive system for a motor vehicle and a motor vehicle with such an electric drive system.

[0002] Motor vehicles are known to have batteries for storing electrical energy to power an electric motor to drive the motor vehicle. Such batteries are sometimes referred to as "traction batteries" and comprise a battery housing that forms a battery compartment in which a plurality of battery cells are arranged.

[0003] Such batteries are used primarily in fully electric vehicles, also known as "Battery Electric Vehicles" or "BEVs" for short, or in hybrid vehicles, also known as "Hybrid Electric Vehicles" or "HEVs" for short. Hybrid vehicles that, like fully electric vehicles, have a charging interface for charging the battery via an external charging device are also known as "Plug-in Hybrid Electric Vehicles" or "PHEVs" for short.

[0004] Generic batteries comprise multiple battery cells, each with a first arrester and a second arrester. The first arresters are electrically coupled to one another, for example, by a first busbar, and the second arresters are electrically coupled to one another via a second busbar. The busbars are each electrically coupled to an electrode and are electrically insulated from one another and from the battery housing.

[0005] From document US 2014 / 0023906 A1, a battery is known in which the battery cells are electrically separated from one another by insulating partition walls. Two battery cells are electrically interconnected via a busbar, so that the battery has a plurality of such busbars for interconnecting all of the battery cells. According to one embodiment, the busbars are cast into a cover of the battery. Document US 2020 / 0350548 A1 shows a battery with a base plate in which recesses are formed for inserting the positive and negative electrodes of the battery cells. In document US 2020 / 0185682 A1, the battery cells are interconnected via printed circuit boards arranged on a side wall of the battery housing. The documents WO 2020 / 214 383 A1, KR 10 2018 064 221 A, WO 2021 / 112 655 A1 and US 2007 / 018 81 47 A1 show further batteries.

[0006] Conventional batteries have the disadvantage that heat dissipation from the battery cells' collectors is inadequate. This can lead to heat buildup and thus accelerated aging and reduced battery performance.

[0007] It is therefore an object of the present invention to eliminate, or at least partially eliminate, the above-described disadvantages in a battery for a drive system of a motor vehicle. In particular, the object of the present invention is to create a battery that provides improved heat dissipation from the battery cells in a simple and cost-effective manner and at least reduces the risk of heat buildup compared to known batteries.

[0008] The above object is achieved by the patent claims. Accordingly, the object is achieved by a battery for an electric drive system for a motor vehicle having the features of independent claim 1, by an electric drive system for a motor vehicle having the features of independent claim 9, and by a motor vehicle having an electric drive system having the features of independent claim 10. Further features and details of the invention emerge from the subclaims, the description, and the drawings. Features and details described in connection with the battery according to the invention naturally also apply in connection with the electric drive system according to the invention and the motor vehicle according to the invention, and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is and can always be made to each other.

[0009] According to a first aspect of the invention, this object is achieved by a battery for an electric drive system for a motor vehicle. The battery comprises a plurality of battery cells, each with a first conductor and a second conductor, a first busbar, a second busbar, and a battery housing, wherein the first busbar and the second busbar are partially covered by an electrically insulating layer. The first conductors are electrically coupled to the first busbar. The second conductors are electrically coupled to the second busbar.According to the invention, the first busbar is arranged on a first side of the battery cells and the second busbar is arranged on a second side of the battery cells that is different from the first side, wherein a heat conducting means for improving heat transfer from the battery cells to the respective busbar is arranged between the first busbar and the battery cells and / or the second busbar and the battery cells.

[0010] The battery cells each have a first arrester and a second arrester. The first arrester is designed, for example, as the positive pole and the second arrester as the negative pole of the respective battery cell. Preferably, the first arrester and the second arrester are arranged on different sides of the respective battery cell and / or are aligned in different directions from the battery cells. The battery cells are designed, for example, as solid-state battery cells, pouch cells or the like. Preferably, the battery cells are combined to form a battery cell stack, which is also referred to as a “stack”. In the stack, the battery cells are preferably braced against one another in the stacking direction, for example by means of a pressure device acting against the stack, in particular in interaction with the battery housing or the first busbar and / or the second busbar.

[0011] The battery has the first busbar and the second busbar, each of which is partially covered by the electrically insulating layer. Preferably, a predominant portion of the first busbar is covered with the insulating layer. More preferably, a predominant portion of the second busbar is covered with the insulating layer. The insulating layer is preferably injection-molded, cast, glued, or the like.

[0012] According to the invention, the second busbar can be designed symmetrically to the first busbar. The first arresters are arranged at non-insulated points on the first busbar such that the first arresters are electrically coupled to the first busbar. Preferably, the first arresters are welded to the first busbar. The second arresters are arranged at non-insulated points on the second busbar such that the second arresters are electrically coupled to the second busbar. Preferably, the second arresters are welded to the second busbar.

[0013] The first busbar is arranged on the first side of the battery cells and the second busbar is arranged on the second side of the battery cells. The second side is different from the first side. Preferably, the first busbar, preferably an electrically insulated region of the first busbar, contacts a cell wall of the first side of the battery cells, preferably over a large area. It can be provided according to the invention that the first busbar contacts the cell walls of one or more sides of the battery cells adjacent to the first side. Preferably, the second busbar, preferably an electrically insulated region of the second busbar, contacts a cell wall of the second side of the battery cells, preferably over a large area. It can be provided according to the invention that the second busbar contacts the cell walls of one or more sides of the battery cells adjacent to the second side.Accordingly, according to the invention, it can be provided that the first busbar and the second busbar contact at least one cell wall of the same side of battery cells in mutually different areas. By extensively covering the battery cells with the first busbar and the second busbar, heat dissipation via the two busbars is improved. According to the invention, a heat-conducting means, in particular an electrically insulating heat-conducting means, is arranged between the first busbar and the battery cells and / or the second busbar and the battery cells in order to improve heat transfer from the battery cells to the respective busbar.

[0014] The first busbar and the second busbar are preferably integrated into a frame in which the battery cells are inserted. The frame is preferably closed and thus surrounds the battery cells or the stack from at least four sides. The frame is preferably rectangular with two long sides and two short sides. It is preferred that the frame be formed from the electrically insulating layer or form the electrically insulating layer. Accordingly, the invention can provide for the first busbar and / or the second busbar to be cast, pressed, glued, or the like into the frame.

[0015] The frame preferably has guide devices for improved insertion and / or retention of the battery cells in the frame. The frame preferably has connecting webs between two opposite sides of the frame to improve the stability of the frame and / or to separate the battery cells within the frame and / or to improve heat dissipation from the stack. The connecting webs preferably have a particularly high thermal conductivity and are electrically insulated. The connecting webs preferably extend between the longest sides of the frame and parallel to the shortest sides of the frame.

[0016] The battery cells, the first busbar, and the second busbar are arranged in the battery housing. The battery housing preferably has one or more openings for introducing a gap filler to fill cavities within the battery housing, for example, between the first busbar and the battery housing or between the second busbar and the battery housing. The gap filler comprises a material that is flowable for filling into the openings and preferably subsequently solidifies. Furthermore, it is preferred that the gap filler has particularly good thermal conductivity in order to improve heat transfer from the busbar to the battery housing.

[0017] A battery according to the invention has the advantage over conventional batteries that heat dissipation from the battery cells via the busbars is improved using simple means and in a cost-effective manner. By arranging the busbars on different sides of the battery cells, the battery cells can be cooled from several sides via the busbars. Furthermore, the arrangement of the busbars according to the invention improves the protection of the battery cells against external mechanical influences.

[0018] According to a preferred further development of the invention, a battery can be provided with a second side opposite the first side. Accordingly, the battery cells are sandwiched between the first busbar and the second busbar, so that the heat of a stack can be dissipated in two opposite directions. This has the advantage of improving heat dissipation from the battery cells via the busbars using simple means and in a cost-effective manner.

[0019] According to the invention, it is preferred that the first busbar completely or predominantly covers the first side of the battery cells, and / or that the second busbar completely or predominantly covers the second side of the battery cells. The first busbar is therefore preferably designed to cover the first side of the battery cells completely or at least predominantly, for example to more than 80% or more than 90%. The second busbar is therefore preferably designed to cover the second side of the battery cells completely or at least predominantly, for example to more than 80% or more than 90%. This has the advantage that heat dissipation from the battery cells via the busbars is improved using simple means and in a cost-effective manner.

[0020] More preferably, the first busbar extends over a third side adjacent to the first side of the battery cells. Accordingly, the first busbar is preferably L-shaped. Alternatively or additionally, the second busbar extends over a fourth side adjacent to the second side of the battery cells. Accordingly, the second busbar is preferably L-shaped. By extending the busbars over multiple sides of the battery cells, the one contact area for heat dissipation can be enlarged. This has the advantage that heat dissipation from the battery cells via the busbars and protection of the battery cells from mechanical influences is improved using simple means and in a cost-effective manner.

[0021] In a particularly preferred embodiment of the invention, the third side is arranged opposite the fourth side. In this case, it is preferred that the first busbar has a first bending region in which the first busbar is bent, for example by 90°. Alternatively, the first busbar can also be composed of several parts that are arranged at an angle to one another, for example forming an angle of 90°, and are connected to one another, for example by a welding region. Furthermore, it is preferred that the second busbar has a second bending region in which the second busbar is bent, for example by 90°. Alternatively, the second busbar can also be composed of several parts that are arranged at an angle to one another, for example forming an angle of 90°, and are connected to one another, for example by a welding region.The first busbar and the second busbar preferably form a common, preferably closed, frame which surrounds the battery cells on four sides, wherein the first busbar is electrically insulated from the second busbar, for example by a common electrically insulating, solidified casting compound. The frame is preferably rectangular with two long sides and two short sides. It is preferred that the first busbar and / or the second busbar are cast, pressed, glued or the like into the frame. The frame preferably has connecting webs between two opposite sides of the frame to improve the stability of the frame and / or to separate the battery cells in the frame and / or to improve heat dissipation from the stack.The connecting webs are preferably formed from a metal or comprise at least one metal and preferably have an electrically insulating layer. The connecting webs are preferably cast, injected, or the like into the frame. The connecting webs are preferably each mechanically coupled to either the first busbar or the second busbar, for example welded, glued, or the like. The connecting webs preferably have a particularly high thermal conductivity. The connecting webs preferably extend between the longest sides of the frame and parallel to the shortest sides of the frame. According to the invention, the frame can additionally or alternatively have a central partition wall which extends within the frame over a largest base area of ​​the frame. The partition wall is preferably connected to the connecting webs for improved heat dissipation.The partition is preferably formed from a metal or comprises at least one metal and preferably comprises an electrically insulating layer. The partition is preferably cast, injected, or the like into the frame. The partition is preferably mechanically coupled to either the first busbar or the second busbar, for example welded, glued, or the like. The connecting webs preferably have a particularly high thermal conductivity. In this case, electrical separation of the first busbar from the second busbar is always provided. This has the advantage that heat dissipation from the battery cells via the busbars and protection of the battery cells from mechanical influences is improved using simple means and in a cost-effective manner.Furthermore, this can improve the assembly of the battery, for example by allowing the battery cells to be pre-assembled with the frame of the first busbar and the second busbar.

[0022] The first busbar preferably covers the third side predominantly or completely. Alternatively or additionally, it is preferred that the second busbar predominantly or completely covers the fourth side. The first busbar is therefore preferably designed to cover the third side of the battery cells completely or at least predominantly, for example to more than 60% or more than 90%. The second busbar is therefore preferably designed to cover the fourth side of the battery cells completely or at least predominantly, for example to more than 60% or more than 90%. It is particularly preferred that the first busbar predominantly or completely covers the first side and the third side. Furthermore, it is preferred that the second busbar predominantly or completely covers the second side and the fourth side.This has the advantage that heat dissipation from the battery cells via the busbars and protection of the battery cells from mechanical influences is improved using simple means and in a cost-effective manner.

[0023] According to a preferred embodiment of the invention, the battery housing surrounds the battery cells on four sides, wherein a first opening of the battery housing is closed by a first cover and a second opening of the battery housing is closed by a second cover. The battery housing is preferably formed in one piece, wherein the first cover and the second cover are not part of the battery housing but merely close off the battery housing to the outside. Preferably, the third side of the battery cells faces the first opening and the fourth side of the battery cells faces the second opening. The first cover is preferably held on the first busbar. The first cover is preferably formed integrally with the electrically insulating layer of the first busbar. Preferably, the first cover has dimensions such that the first cover completely closes the first opening.The first cover is preferably designed such that the first cover contacts the housing wall in the assembled state, such that further insertion of the frame into the battery housing is positively limited by the first cover. The second cover is preferably held on the second busbar. The second cover is preferably formed integrally with the electrically insulating layer of the second busbar. The second cover is preferably dimensioned such that the second cover closes the second opening completely or at least almost completely. The second cover is preferably designed such that the second cover can be inserted into the battery housing via the first housing opening when the frame with the battery cells is assembled. The first cover and second cover are preferably welded, glued, screwed, riveted or the like to the battery housing.Electrodes of the busbars are preferably led out through the covers. It is preferred that the first electrode, which is electrically coupled to the first busbar, is led out through the first cover, and / or the second electrode, which is electrically coupled to the second busbar, is led out through the second cover. This has the advantage of improving heat dissipation from the battery cells via the busbars and protecting the battery cells from mechanical influences using simple and cost-effective means. Furthermore, this allows for improved battery assembly, for example, by easily inserting the frame with the battery cells linearly into the battery housing.

[0024] According to an alternative embodiment of the invention, the battery housing surrounds the battery cells on five sides, wherein a first opening of the battery housing is closed by a first cover. The battery housing is preferably formed in one piece, wherein the first cover is not part of the battery housing but merely closes the battery housing to the outside. Preferably, the third side of the battery cells faces the first opening. The first cover is preferably held on the first busbar. The first cover is preferably formed integrally with the electrically insulating layer of the first busbar. Preferably, the first cover has dimensions such that the first cover completely closes the first opening.The first cover is preferably designed such that the first cover contacts the housing wall in the assembled state, such that further insertion of the frame into the battery housing is positively limited by the first cover. The first cover is preferably welded, glued, screwed, riveted or the like to the battery housing. The first electrode of the first busbar is preferably led outwards through the first cover. The second electrode of the second busbar preferably extends outwards through a feedthrough of the battery housing and is preferably electrically insulated from the battery housing, for example by an insulating potting compound or the like. This has the advantage that heat dissipation from the battery cells via the busbars and protection of the battery cells from mechanical influences is improved using simple means and in a cost-effective manner.Furthermore, this can improve the assembly of the battery, for example by easily inserting the frame with the battery cells into the battery housing in a linear manner.

[0025] According to a second aspect of the invention, the object is achieved by an electric drive system for a motor vehicle. The electric drive system has an electric motor for driving the motor vehicle. According to the invention, the electric drive system has a battery according to the invention. The drive system according to the invention results in all the advantages that have already been described for a battery according to the first aspect of the invention. Accordingly, the drive system according to the invention has the advantage over conventional drive systems that heat dissipation from the battery cells via the busbars is improved. By arranging the busbars on different sides of the battery cells, the battery cells can be cooled from several sides via the busbars. In addition, the inventive arrangement of the busbars improves protection of the battery cells against external mechanical influences.

[0026] According to a third aspect of the invention, the object is achieved by a motor vehicle with an electric drive system according to the invention. The motor vehicle according to the invention provides all of the advantages already described for a battery according to the first aspect of the invention and for a drive system according to the second aspect of the invention. Accordingly, the motor vehicle according to the invention has the advantage over conventional motor vehicles that heat dissipation from the battery cells via the busbars is improved. By arranging the busbars on different sides of the battery cells, the battery cells can be cooled from several sides via the busbars. In addition, the arrangement of the busbars according to the invention improves protection of the battery cells against external mechanical influences.

[0027] A battery according to the invention, a drive system according to the invention, and a motor vehicle according to the invention are explained in more detail below with reference to the drawings. They show schematically: Fig. 1 shows a perspective view of a first manufacturing state of a battery according to a preferred embodiment of the invention, Fig. 2 shows a perspective view of a second manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 3 shows a perspective view of a third manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 4 shows a perspective view of an optional fourth manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 5 shows a perspective view of an optional fifth manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 6 shows a perspective view of a sixth manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 7 shows a perspective exploded view of a second electrode according to the preferred embodiment of the invention, Fig. 8 shows a perspective view of a seventh manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 9 shows a perspective view of an optional eighth manufacturing state of the battery according to the preferred embodiment of the invention, Fig. 10 shows a perspective view of the battery according to the preferred embodiment of the invention, and Fig. 11 shows a side view of a preferred embodiment of a motor vehicle according to the invention.

[0028] Elements with the same function and mode of action are listed in the Fig. 1 to 11 are each provided with the same reference numerals.

[0029] In Fig. 1 is the first manufacturing state of a battery 1 (cf. Fig. 10) according to a preferred embodiment of the invention is shown schematically in a perspective view. A first busbar 7 with a first bending region 20 and a first electrode 22 and a second busbar 8 with a second bending region 21 and a second electrode 23 are provided. A first cover 16 is arranged on a shorter side of the first busbar 7, on which the first electrode 22 is formed. The first electrode 22 is passed through the first cover 16.

[0030] Fig. Figure 2 shows the second manufacturing state of the battery 1 according to the preferred embodiment of the invention schematically in a perspective view. In this manufacturing state, a second cover 18 is arranged on the second electrode 23. The second electrode 23 is passed through the second cover 18.

[0031] In Fig. Figure 3 schematically illustrates a perspective view of the third manufacturing stage of the battery 1 according to the preferred embodiment of the invention. In this manufacturing stage, portions of the first busbar 7 and the second busbar 8 are covered with an electrically insulating layer 10. A frame 29 is formed by the first busbar 7, second busbar 8, and electrically insulating layer 10.

[0032] Fig. Figure 4 shows the optional fourth manufacturing state of the battery 1 according to the preferred embodiment of the invention schematically in a perspective view. In this manufacturing state, connecting webs 24 made of the electrically insulating layer are arranged between the longer sides of the frame 29. The connecting webs 24 define several mutually delimited areas for arranging battery cells 4 (cf. Fig. 6) formed.

[0033] In Fig. Figure 5 schematically illustrates a perspective view of the optional fifth manufacturing state of the battery 1 according to the preferred embodiment of the invention. In this manufacturing state, the frame 29 is further divided by a partition wall 25 made of the electrically insulating layer extending longitudinally to the frame 29.

[0034] Fig. 6 shows the sixth manufacturing state of the battery 1 according to the preferred embodiment of the invention, schematically in a perspective view. In this manufacturing state, a battery cell 4 with a plurality of first arresters 5 and a plurality of second arresters 6 is inserted into the frame 29. The first arresters 5 are electrically coupled to the first busbar 7, for example by welding. The second arresters 6 are electrically coupled to the second busbar 8, for example by welding. According to the invention, a plurality of battery cells 4, for example each with only one first arrester 5 and one second arrester 6, can also be arranged on the frame 29.

[0035] In Fig. Figure 7 shows a schematic exploded perspective view of the second electrode 23 according to the preferred embodiment of the invention. This view shows that the second electrode 23 extends through the second cover 18.

[0036] Fig. Fig. 8 shows a seventh manufacturing state of the battery 1 according to the preferred embodiment of the invention, schematically in a perspective view. In this manufacturing state, the frame 29 is arranged next to a battery housing 9. The second cover 18 faces a first opening 15 of the battery housing 9. The frame 29 surrounds a first side 11, a second side 12, a third side 13, and a fourth side 14 of the battery cells 4. In this manufacturing state, the frame 29 can be inserted into the battery housing 9 such that the second cover 18 closes a second opening 17 of the battery housing 9 and the first cover 16 closes the first opening 15.

[0037] In Fig. Figure 9 schematically illustrates a perspective view of the optional eighth manufacturing state of the battery 1 according to the preferred embodiment of the invention. In this manufacturing state, a gap filler 26 is arranged on the frame 29. To better identify the gap filler 26, the battery housing 9 is hidden.

[0038] Fig. 10 shows the battery 1 according to the preferred embodiment of the invention schematically in a perspective view. The frame 29 is arranged in the battery housing 9 such that the second cover 18 closes the second opening 17 of the battery housing 9 and the first cover 16 closes the first opening 15 of the battery housing 9. The battery housing 9 has a plurality of filling openings 27 for filling the gap filler 26, which in this illustration are arranged adjacent to the first side 11, for example. It can be provided that additionally or alternatively, such filling openings 27 are arranged adjacent to the second side 12.

[0039] In Fig.Figure 11 schematically illustrates a side view of the preferred embodiment of a motor vehicle 3 according to the invention. The motor vehicle 3 has an electric drive system 2 according to the invention, comprising an electric motor 19 with a transmission 28 for driving the motor vehicle 3, and a battery 1 according to the invention for providing electrical energy to operate the electric motor 19. List of reference symbols 1 battery 2 drive system 3 Motor vehicle 4 battery cells 5 first arrester 6 second arrester 7 first busbar 8 second busbar 9 Battery housing 10 electrically insulating layer 11 first page 12 second page 13 third page 14 fourth page 15 first opening 16 first lid 17 second opening 18 second lid 19 Electric motor 20 first bending area 21 second bending area 22 first electrode 23 second electrode 24 connecting bridge 25 Partition wall 26 gap fillers 27 Filling opening 28 gearboxes 29 frames

Claims

[1] Battery (1) for an electric drive system (2) for a motor vehicle (3), comprising a plurality of battery cells (4), each with a first conductor (5) and a second conductor (6), a first busbar (7), a second busbar (8) and a battery housing (9), wherein the first busbar (7) and the second busbar (8) are partially covered by an electrically insulating layer (10), and wherein the first conductors (5) are electrically coupled to the first busbar (7) and the second conductors (6) are electrically coupled to the second busbar (8), characterized byin that the first busbar (7) is arranged on a first side (11) of the battery cells (4) and the second busbar (8) is arranged on a second side (12) of the battery cells (4) which is different from the first side (11), wherein a heat conducting means for improving heat transfer from the battery cells (4) to the respective busbar (7, 8) is arranged between the first busbar (7) and the battery cells (4) and / or the second busbar (8) and the battery cells (4). [2] Battery (1) according to claim 1, characterized by that the second side (12) is opposite to the first side (11). [3] Battery (1) according to claim 1 or 2, characterized by that the first busbar (7) predominantly or completely covers the first side (11) of the battery cells (4), and / or that the second busbar (8) predominantly or completely covers the second side (12) of the battery cells (4). [4] Battery (1) according to one of the preceding claims, characterized by that the first busbar (7) extends over a third side (13) adjacent to the first side (11) of the battery cells (4), and / or that the second busbar (8) extends over a fourth side (14) adjacent to the second side (12) of the battery cells (4). [5] Battery (1) according to claim 4, characterized by that the third side (13) is opposite to the fourth side (14). [6] Battery (1) according to claim 4 or 5, characterized by that the first busbar (7) predominantly or completely covers the third side (13), and / or that the second busbar (8) predominantly or completely covers the fourth side (14). [7] Battery (1) according to one of the preceding claims, characterized bythat the battery housing (9) surrounds the battery cells (4) from four sides, wherein a first opening (15) of the battery housing (9) is closed by a first cover (16) and a second opening (17) of the battery housing (9) is closed by a second cover (18). [8] Battery (1) according to one of claims 1 to 6, characterized by that the battery housing (9) surrounds the battery cells (4) from five sides, wherein a first opening (15) of the battery housing (9) is closed by a first cover (16). [9] Electric drive system (2) for a motor vehicle (3), comprising an electric motor (19) for driving the motor vehicle (3), characterized by that the electric drive system (2) has a battery (1) according to one of the preceding claims. [10] Motor vehicle (3), comprising an electric drive system (2) for driving the motor vehicle (3), characterized bythat the electric drive system (2) is designed as an electric drive system (2) according to claim 9.

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