CN219123415U - Battery cell grouping integrated structure and battery system - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery cell grouping integrated structure and a battery system. The integrated structure of electricity core group includes: the first battery cell group comprises a plurality of first battery cells, the plurality of first battery cells are sequentially arranged along a preset direction, the first battery cells are provided with first mounting surfaces, and the first mounting surfaces are provided with positive pole posts and negative pole posts; the second battery cell group comprises a plurality of second battery cells, the plurality of second battery cells are sequentially arranged along a preset direction, the second battery cells are provided with second installation surfaces, positive pole columns and negative pole columns are arranged on the second installation surfaces of the second battery cells, the second installation surfaces are opposite to the first installation surfaces, the positive pole column of one second battery cell is abutted with the negative pole column of one first battery cell, and the negative pole column of the second battery cell is abutted with the positive pole column of the other first battery cell. Therefore, the first battery cell and the second battery cell are directly connected through the lamination of the pole, the use of a bus bar in the prior grouping technology is avoided, parts are reduced, and cost is reduced.

Description

Battery cell grouping integrated structure and battery system

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery cell grouping integrated structure and a battery system.

Background

With the development of new energy industry, battery technology is getting more and more attention. The electric core appearance among the prior art is the cuboid generally, and the utmost point post of electric core sets up the less side of area on electric core generally, and the connection between electric core and the electric core needs to be realized through the utmost point post welding of busbar and every electric core, and the use of busbar makes holistic part quantity of battery more, and the busbar carries out the connection process with every utmost point post respectively comparatively loaded down with trivial details, and the operation is inconvenient, and production efficiency is low, also causes battery weight increase, is unfavorable for the promotion of battery energy density, influences the popularization and application of battery.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the bus bars are needed to be used for connecting the cells in the prior art and the number of the connected cells is large, so that the integrated structure of the cells and the battery system which can be connected without using the bus bars are provided.

In order to solve the above-mentioned problems, the present utility model provides a cell grouping and integrating structure, comprising: the first battery cell group comprises a plurality of first battery cells, the plurality of first battery cells are sequentially arranged along a preset direction, the first battery cells are provided with first mounting surfaces, and the first mounting surfaces are provided with positive pole posts and negative pole posts; the second battery cell group comprises a plurality of second battery cells, the plurality of second battery cells are sequentially arranged along a preset direction, the second battery cells are provided with second installation surfaces, positive pole columns and negative pole columns are arranged on the second installation surfaces of the second battery cells, the second installation surfaces are opposite to the first installation surfaces, the positive pole column of one second battery cell is abutted with the negative pole column of one first battery cell, and the negative pole column of the second battery cell is abutted with the positive pole column of the other first battery cell.

Optionally, the positive electrode posts and the negative electrode posts are diagonally distributed; or the positive electrode column and the negative electrode column are arranged at intervals along the preset direction.

Optionally, the dimensions of the positive electrode post and the negative electrode post along the preset direction are smaller than half of the dimensions of the first battery cell or the second battery cell along the preset direction.

Optionally, the positive electrode column of the first electric core is welded with the negative electrode column of the second electric core; the negative pole post of first electric core and the anodal post welding of second electric core.

Optionally, the gap between the second battery cell group and the first battery cell group is 0.5% -40% of the thickness of the first battery cell or the second battery cell.

Optionally, a heat insulation material is arranged between the second cell group and the first cell group; or, a thermal management assembly is arranged between the second cell group and the first cell group, and the thermal management assembly is suitable for reducing the temperature of the first cell and the second cell.

Optionally, the insulating material is bonded to the first mounting surface and the second mounting surface.

Optionally, the thermal management assembly is bonded to the first mounting surface and the second mounting surface.

Optionally, the cross section of the first electric core and the cross section of the second electric core are trapezoidal, and positive pole posts and/or negative pole posts are arranged at positions, opposite to oblique sides of the trapezoids, on the first mounting surface and the second mounting surface.

The present utility model also provides a battery system including: at least one of the above-described cell grouping and integrating structures.

The utility model has the following advantages:

1. according to the battery cell grouping integrated structure, the positive pole and the negative pole are arranged on the first mounting surface of the first battery cell, the positive pole and the negative pole are arranged on the second mounting surface of the second battery cell, and the first mounting surface and the second mounting surface are opposite to each other, so that the pole of the first battery cell is opposite to and attached to the pole of the second battery cell, the first battery cell and the second battery cell are directly connected through the pole, the use of a busbar in the existing grouping technology is avoided, parts are reduced, and cost is reduced; and through the positive pole butt of a second electric core and the negative pole butt of a first electric core and the negative pole butt of this second electric core and the positive pole butt of another first electric core, realize the series connection of first electric core and second electric core and first electric core and second electric core staggered arrangement, stable in structure and saving space.

2. The battery cell group integrated structure provided by the utility model has the advantages that the positive pole post and the negative pole post are arranged along the large surface of the battery cell, enough mounting positions are provided for the positive pole post and the negative pole post, and the sizes of the positive pole post and the negative pole post can be properly increased, so that the overcurrent capacity of the battery cell is increased, and the electrical performance of the battery cell is improved.

3. According to the battery cell group integrated structure, the size of the positive electrode column and the negative electrode column along the preset direction is smaller than half of the size of the battery cell along the preset direction, so that materials can be saved, the cost is reduced, and the weight of the battery cell is reduced.

4. According to the battery cell group integrated structure, the heat management assembly is arranged in the gap between the first battery cell group and the second battery cell group to reduce the temperature of the first battery cell and the second battery cell, so that the battery cell is prevented from being too high in temperature, good electric performance of the battery cell is maintained, the safety of the battery cell is ensured, the structural space can be fully utilized, and the system integration level is improved.

5. According to the integrated structure of the battery cells, the heat insulation material is filled in the gap between the first battery cell group and the second battery cell group, so that heat exchange between the first battery cell group and the second battery cell group can be reduced, the mutual influence between the battery cells is reduced, and the overall safety is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural diagram of a cell grouping and integrating structure according to a first embodiment of the present utility model;

fig. 2 shows a schematic front view of the cell grouping and integration structure of fig. 1;

fig. 3 shows a schematic side view of the cell grouping and integration structure of fig. 1;

fig. 4 shows a schematic top view of the cell grouping and integration structure of fig. 1;

fig. 5 is a schematic structural diagram showing the assembly of a first cell group and a second cell group according to a first embodiment of the present utility model;

FIG. 6 shows an enlarged partial schematic view of FIG. 5;

FIG. 7 shows a side view of the schematic of FIG. 5;

FIG. 8 is a schematic diagram showing the assembly of a first cell stack and a thermal management assembly according to a first embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a first cell group or a second cell group according to a first embodiment of the present utility model;

fig. 10 shows a schematic structural diagram of a first cell or a second cell according to a first embodiment of the present utility model;

fig. 11 is a schematic structural diagram of a cell grouping and integrating structure according to a second embodiment of the present utility model;

fig. 12 shows a schematic front view of the cell grouping and integration structure of fig. 11;

fig. 13 shows a schematic side view of the cell grouping and integration structure of fig. 11;

fig. 14 shows a schematic top view of the cell grouping and integration structure of fig. 11;

fig. 15 shows a schematic structural diagram of a first cell group or a second cell group according to a second embodiment of the present utility model;

fig. 16 shows a schematic structural diagram of a first cell or a second cell according to a second embodiment of the present utility model;

fig. 17 is a schematic view showing the structure of a battery system according to an embodiment of the present utility model;

fig. 18 shows a schematic top view of the battery system of fig. 17;

fig. 19 shows a side view schematic of the battery system of fig. 17.

Reference numerals illustrate:

10. a first cell group; 11. a first cell; 111. a first mounting surface; 112. a second face; 20. the second cell group; 21. a second cell; 211. a second mounting surface; 31. a positive electrode post; 32. a negative electrode column; 40. a thermal management assembly; 41. a liquid injection port; 42. and a liquid outlet.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 10, the integrated structure for battery cells provided in this embodiment includes: the first battery cell group 10 and the second battery cell group 20, wherein the first battery cell group 10 comprises a plurality of first battery cells 11, the plurality of first battery cells 11 are sequentially arranged along a preset direction, the first battery cells 11 are provided with a first mounting surface 111, and the first mounting surface 111 is provided with a positive pole column 31 and a negative pole column 32; the second electric core group 20 includes a plurality of second electric cores 21, and a plurality of second electric cores 21 are arranged in proper order along predetermining the direction, and second electric core 21 has second installation face 211, is provided with positive pole 31 and negative pole 32 on the second installation face 211 of second electric core 21, and second installation face 211 sets up with first installation face 111 relatively, and the positive pole 31 of one second electric core 21 and the negative pole 32 butt of one first electric core 11 and the negative pole 32 of second electric core 21 and the positive pole 31 butt of another first electric core 11.

It should be noted that, the first electric core 11 and the second electric core 21 have the same structure, but different placement orientations, and the first installation surface 111 and the second installation surface 211 are the same, and the electric core grouping integrated structure of this embodiment is assembled by using electric cores as shown in fig. 10, and the positive electrode column 31 and the negative electrode column 32 are simultaneously disposed on a large surface (i.e., a surface with a relatively large surface area) of the electric core, so that the direct bonding between the electrode columns when the first electric core 11 and the second electric core 21 are disposed opposite to each other is facilitated, and meanwhile, the stability when the first electric core group 10 and the second electric core group 20 are stacked is also facilitated to be ensured; the preset direction is the arrangement direction of the plurality of first electric cells 11 or the plurality of second electric cells 21, namely, the arrangement direction indicated by an arrow in fig. 1, preferably, the preset direction is the same as the width direction of the electric cells, wherein the width direction of the electric cells refers to the width direction indicated by the arrow in fig. 10, and the electric cells refer to the first electric cells 11 or the second electric cells 21; when the pole of the first electric core 11 is abutted against the pole of the second electric core 21, the first electric core 11 is electrically connected with the second electric core 21 through the pole as the pole is made of metal; the positive pole 31 of the second electric core 21 is connected with the negative pole 32 of one first electric core 11, the negative pole 32 of the second electric core 21 is connected with the positive pole 31 of another adjacent first electric core 11, so that one second electric core 21 is electrically connected with two adjacent first electric cores 11 at the same time, one first electric core 11 is electrically connected with two adjacent second electric cores 21 at the same time, the first electric cores 11 and the second electric cores 21 are staggered, and the series connection among the electric cores is realized according to the sequence of the first electric cores 11, the second electric cores 21 and the first electric cores 11 and … …. Wherein the number of the first cells 11 in the first cell group 10 is at least two, and the number of the second cells 21 in the second cell group 20 is at least one.

By using the battery cell group integrated structure of the embodiment, the positive electrode column 31 and the negative electrode column 32 are arranged on the first mounting surface 111 of the first battery cell 11, the positive electrode column 31 and the negative electrode column 32 are arranged on the second mounting surface 211 of the second battery cell 21, and the first mounting surface 111 and the second mounting surface 211 are arranged oppositely, so that the electrode column of the first battery cell 11 and the electrode column of the second battery cell 21 are opposite and attached, the first battery cell 11 and the second battery cell 21 are directly connected through the electrode column, the use of a bus bar in the prior group technology is avoided, parts are reduced, and cost is reduced; and through the positive pole 31 of a second electric core 21 and the negative pole 32 of a first electric core 11 butt joint and the negative pole 32 of this second electric core 21 and the positive pole 31 of another first electric core 11 butt joint, realize that first electric core 11 and second electric core 21's series connection and first electric core 11 and second electric core 21 staggered arrangement, stable in structure and saving space.

It should be noted that, in the prior art, the electrical cores are generally connected through a bus bar, and the bus bar is used as a connecting piece to be connected with each pole, but in this embodiment, the poles are directly arranged oppositely, so that the two opposite poles can be directly electrically connected without additional connecting pieces.

In the present embodiment, the positive electrode posts 31 and the negative electrode posts 32 are diagonally arranged. Further referring to fig. 10, the positive electrode 31 and the negative electrode 32 are arranged along the large surface of the battery cell, so that a sufficient installation space is provided for the positive electrode 31 and the negative electrode 32, and the sizes of the positive electrode 31 and the negative electrode 32 can be properly increased, so that the overcurrent capacity of the battery cell is increased, the electric performance of the battery cell is improved, the positive electrode 31 and the negative electrode 32 are distributed at two corners along the diagonal line of the large surface of the battery cell, the positive electrode 31 and the negative electrode 32 are far apart, and short circuits between the positive electrode and the negative electrode 32 are effectively avoided. The battery core refers to a first battery core 11 or a second battery core 21, and the two battery cores have the same structure; the large face is the first mounting face 111 or the second mounting face 211.

In the present embodiment, the dimensions of the positive electrode post 31 and the negative electrode post 32 in the preset direction are smaller than half the dimensions of the first cell 11 or the second cell 21 in the preset direction, that is, the dimensions of the positive electrode post 31 and the negative electrode post 32 in the "width direction" shown in fig. 10 are not more than half the cell width, wherein the cell width refers to the dimension of the cell in the "width direction" shown in fig. 10. Because first electric core 11 and second electric core 21 are crisscross to be arranged, two electric core overlap part is not more than half of electric core width, if pole length exceeds half of electric core width, and the part of growing can't also be connected with relative pole laminating, can cause the waste that causes of pole material, consequently through setting up positive pole 31, negative pole 32 along the size of predetermineeing the size of direction to be less than half of electric core along the size of predetermineeing the direction, can save material, reduce cost and reduce electric core weight.

In the present embodiment, the positive electrode post 31 of the first cell 11 is welded with the negative electrode post 32 of the second cell 21; the negative electrode post 32 of the first cell 11 is welded to the positive electrode post 31 of the second cell 21. Specifically, after the post of first electric core 11 is laminated with the post of second electric core 21, through the side welding of post, realize directly connecting the electrode of two looks butt, convenient operation and reliability are high, have saved the use of busbar, reduce the connecting piece, reduce cost, alleviate electric core weight. The positive electrode column 31 or the negative electrode column 32 is referred to as a positive electrode column.

In this embodiment, the gap between the second cell set 20 and the first cell set 10 is 0.5% -40% of the thickness of the first cell 11 or the second cell 21. It should be noted that, since the first electric core 11 and the second electric core 21 are in contact through the pole column, the pole column protrudes from the electric core surface, so that a gap exists between the surfaces of the first electric core 11 and the second electric core 21, the size of the gap is related to the height of the pole column, and the gap between the second electric core set 20 and the first electric core set 10 is 0.5% -40% of the electric core thickness, so that the stability of the first electric core set 10 and the second electric core set 20 when stacked can be ensured, and the thermal management assembly 40 or the heat insulation material is suitable for being contained. Wherein, the height refers to the dimension along the "height direction" indicated by the arrow in fig. 10.

In the present embodiment, a thermal management assembly 40 is disposed between the second cell set 20 and the first cell set 10, and the thermal management assembly 40 is adapted to reduce the temperature of the first cell 11 and the second cell 21. Specifically, the thermal management assembly 40 is disposed in the gap between the first battery cell group 10 and the second battery cell group 20, and the thermal management assembly 40 is disposed in the gap between the first battery cell group 10 and the second battery cell group 20 to reduce the temperature of the first battery cell 11 and the second battery cell 21, so as to prevent the temperature of the battery cell from being too high, thereby maintaining good electrical performance of the battery cell, ensuring the safety of the battery cell, fully utilizing the structural space, and improving the system integration level. Preferably, the thermal management assembly 40 comprises a water cooling plate, a heating film, a heat conducting adhesive and the like, the water cooling plate is provided with a liquid injection port 41 and a liquid outlet 42, liquid is injected into the water cooling plate from the liquid injection port 41 and flows out from the liquid outlet 42, heat of the battery cell is taken away through the flowing of the liquid, and the cooling effect is good, wherein the liquid is water or other coolants. Preferably, the thermal management assembly 40 is adhered to the first mounting surface 111 and the second mounting surface 211, the adhering manner is firm and reliable, and can be realized without additional parts, the operation is convenient, the structural stability can be ensured, on the other hand, the first battery cell group 10 and the second battery cell group 20 have a separation trend due to the cyclic swelling of the battery cells, the connection position of the pole post is subjected to a tensile force, and the stability of connection is destroyed, while the thermal management assembly 40 of the embodiment is adhered to the first mounting surface 111 and the second mounting surface 211, the separation trend between the first battery cell group 10 and the second battery cell group 20 can be avoided through large-area adhesion, the connection reliability is ensured, and the adhering force is not less than 10N.

It will be appreciated that, as an alternative embodiment, a heat insulating material may be disposed between the second cell set 20 and the first cell set 10, and by filling the gap between the first cell set 10 and the second cell set 20 with the heat insulating material, heat exchange between the first cell set 10 and the second cell set 20 may be reduced, so as to reduce interaction between the cells and improve overall safety. Preferably, the heat insulation material can be foam, mica plates, heat insulation glue and the like, and has good heat insulation effect. Preferably, the heat insulating material is bonded to the first mounting surface 111 and the second mounting surface 211, so that on the one hand, structural stability can be ensured, on the other hand, separation trend between the first battery cell group 10 and the second battery cell group 20 is avoided, stress on a connection position of the pole and the pole is avoided, and connection reliability is ensured.

In the present embodiment, the cross section of the first cell 11 and the cross section of the second cell 21 are trapezoidal, and the positive electrode column 31 or the negative electrode column 32 is provided on the first mounting surface 111 and the second mounting surface 211 at positions opposite to the oblique sides of the trapezoid. Taking the first electric core 11 as an example, further referring to fig. 10, the section of the electric core along the length direction indicated by the arrow in fig. 10 is in a trapezoid shape, specifically an isosceles trapezoid shape, two oblique sides of the trapezoid correspond to two end faces of two ends of the electric core along the length direction, the two end faces are obliquely arranged, the dimension of a second face 112 opposite to the first mounting face 111 along the length direction is smaller than that of the first mounting face 111 along the length direction, a pole is arranged at the part of the first mounting face 111, which is longer than the second face 112, because the part of the first mounting face 111 opposite to the pole is not shielded by the second face 112, connection quality is ensured, and stability of electric core performance is improved. Specifically, the first mounting surface 111 is provided with the positive electrode post 31 on one side in the length direction and the negative electrode post 32 on the other side. The structure of the second battery cell 21 is identical to that of the first battery cell 11, and will not be described herein.

Example two

As shown in fig. 11 to 16, the difference between the integrated structure of the battery cells in the second embodiment and the first embodiment is that the external structure of the battery cells is different, and the setting positions of the poles are also different, where the battery cells refer to the first battery cell 11 and the second battery cell 21, in the second embodiment, the positive electrode column 31 and the negative electrode column 32 are arranged at intervals along the preset direction, further referring to fig. 16, the first battery cell 11 is described as an example, the cross section of the battery cell along the "length direction" indicated by the arrow in fig. 16 is a trapezoid, specifically a right trapezoid, one oblique side of the trapezoid corresponds to one end face of the battery cell along the length direction, the end face is obliquely arranged, the dimension of the second face 112 opposite to the first mounting face 111 along the length direction is smaller than the dimension of the first mounting face 111 along the length direction, and the part of the first mounting face 111 where the second face 112 is longer is provided with the positive electrode column 31 and the negative electrode column 32, so that the positive electrode column 31 and the negative electrode column 32 can be operated simultaneously, and the inside the battery cell can be conveniently observed, and the quality of the battery cell can be conveniently connected to the battery cell 112, and the quality can be conveniently improved. Specifically, the positive electrode posts 31 and the negative electrode posts 32 are arranged at intervals in a preset direction, that is, at intervals in a "width direction" indicated by an arrow in fig. 16.

As shown in fig. 17 to 19, the present utility model also provides a battery system including: at least one of the above-described cell grouping and integrating structures. The plurality of battery cells can be arranged side by side in a plurality of rows, can be stacked in a plurality of layers, or simultaneously have a plurality of rows and a plurality of layers, so that the system integration optimization is realized, and the specific number depends on the requirements of a battery system.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A cell grouping and integrating structure, comprising:

the first battery cell group (10) comprises a plurality of first battery cells (11), wherein the plurality of first battery cells (11) are sequentially arranged along a preset direction, the first battery cells (11) are provided with first installation surfaces (111), and positive pole columns (31) and negative pole columns (32) are arranged on the first installation surfaces (111);

the second electric core group (20), including a plurality of second electric core (21), a plurality of second electric core (21) are followed in proper order the direction of predetermineeing, second electric core (21) have second installation face (211), be provided with on second installation face (211) of second electric core (21) positive pole post (31) with negative pole post (32), second installation face (211) with first installation face (111) set up relatively, one positive pole post (31) of second electric core (21) with one negative pole post (32) butt of first electric core (11) just negative pole post (32) of second electric core (21) with another positive pole post (31) butt of first electric core (11).

2. The cell grouping and integrating structure according to claim 1, characterized in that the positive electrode posts (31) and the negative electrode posts (32) are diagonally distributed; alternatively, the positive electrode column (31) and the negative electrode column (32) are arranged at intervals along the preset direction.

3. The cell grouping integrated structure according to claim 1, wherein the dimensions of the positive electrode column (31), the negative electrode column (32) along the preset direction are smaller than half the dimensions of the first cell (11) or the second cell (21) along the preset direction.

4. The cell grouping integrated structure according to claim 1, characterized in that the positive post (31) of the first cell (11) is welded with the negative post (32) of the second cell (21); the negative electrode column (32) of the first cell (11) is welded with the positive electrode column (31) of the second cell (21).

5. The cell grouping integrated structure according to claim 1, characterized in that the gap between the second cell group (20) and the first cell group (10) is 0.5% -40% of the thickness of the first cell (11) or the second cell (21).

6. The cell grouping and integrating structure according to claim 1, characterized in that a thermal management assembly (40) is arranged between the second cell group (20) and the first cell group (10) to reduce the temperature of the first cell (11) and the second cell (21); or, a heat insulation material is arranged between the second cell group (20) and the first cell group (10).

7. The cell stack integrated structure of claim 6, wherein the thermal management assembly (40) is bonded to the first mounting surface (111) and the second mounting surface (211).

8. The cell stack integrated structure of claim 6, wherein the thermal insulating material is bonded to the first mounting surface (111) and the second mounting surface (211).

9. The cell grouping and integrating structure according to any one of claims 1 to 8, characterized in that the cross section of the first cell (11) and the cross section of the second cell (21) are trapezoidal, and the positive electrode post (31) and/or the negative electrode post (32) are provided on the first mounting surface (111) and the second mounting surface (211) at positions opposite to the oblique sides of the trapezoids.

10. A battery system, comprising: at least one cell grouping integrated structure as claimed in any one of claims 1 to 9.

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