Battery cell group module, battery pack and power utilization device

Abstract

The utility model belongs to a battery cell group module, a battery pack and an electric device in the technical field of power batteries. The battery cell group module comprises a plurality of battery cell stacking bodies, each battery cell stacking body comprises a plurality of battery cells, and at least part of the battery cell stacking bodies are provided with output electrode tabs; the connecting beams are arranged between every two adjacent battery cell stacking bodies; the two side plate groups are distributed on the two sides of the battery cell stacking bodies, each side plate group comprises a plurality of side plate sections, and the side plate sections located on the two sides of the same battery cell stacking body are detachably connected with the two ends of the corresponding connecting beams respectively and clamp and fix the battery cell stacking bodies during connection; one part of the insulating partition plate is clamped and fixed between the two adjacent battery cells; the busbar bracket is connected with the other part, extending out of the space between the two adjacent battery cells, of the insulating partition plate in a positioning and matching manner; and the output pole busbar is fixed on the busbar bracket and is connected with the output pole lug. Assembly is flexible, limiting and fixing of the output electrode busbar are facilitated, and improvement of assembly efficiency and reduction of cost are facilitated.

Description

Battery cell modules, battery packs and electrical devices Technical Field

[0001] This utility model belongs to the field of power battery technology, and in particular relates to a cell assembly module, a battery pack and an electrical device. Background Technology

[0002] With the widespread application of battery technology, it is often necessary to combine multiple battery cell stacks to meet power demand. During the installation of battery cell stacks, not only the space utilization problem needs to be considered, but also the limiting and fixing of the battery cell stack tabs. Because the battery cell stack tabs are relatively soft, especially the tabs of pouch cells, they are prone to positional displacement during installation, making it difficult to limit and fix the busbar connected to the tabs. Busbar assembly and positioning are difficult, which is not conducive to improving assembly efficiency and reducing costs. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a battery cell module, battery pack and power device to solve the problems of busbar limiting and fixing difficulties in the prior art, so as to improve assembly efficiency, space utilization and reduce costs.

[0004] To achieve the above and other related objectives, this utility model provides a battery cell assembly module, comprising:

[0005] Multiple battery cell stacks are arranged along a first direction, each battery cell stack includes multiple battery cells stacked along a second direction, and at least some of the battery cell stacks have output tabs;

[0006] A connecting beam is arranged between two adjacent battery cell stacks;

[0007] Two side plate groups are distributed on both sides of the cell stack along the second direction. Each side plate group includes multiple side plate segments distributed along the first direction and detachably connected. The side plate segments located on both sides of the same cell stack are detachably connected to the two ends of the corresponding connecting beam. The side plate segments can clamp and fix the cell stack when connected to the connecting beam.

[0008] An insulating partition, a portion of which is clamped and fixed between two adjacent cells within the same cell stack;

[0009] Busbar bracket, with another part of the insulating partition extending between the two adjacent cells, the busbar bracket being positioned and connected to the other part of the insulating partition;

[0010] An output bus is fixed on the bus bracket and connected to the output electrode tab.

[0011] Optionally, the busbar bracket and the insulating partition are positioned and assembled using a limiting component.

[0012] Optionally, the limiting component includes a limiting block and a limiting groove, the limiting groove being formed on the busbar support, and a portion of one end of the insulating partition extending along the first direction to form the limiting block, the limiting block being adapted to extend into the limiting groove and be inserted into the limiting groove for limiting.

[0013] Optionally, the limiting groove is a U-shaped groove with its opening facing the limiting block, and the bottom wall of the limiting groove abuts against the limiting surface of the limiting block to limit the position in a third direction.

[0014] Optionally, the main body of the battery cell stack and the output bus are located on opposite sides of the bus support, and the bus support is provided with a clearance gap. The output electrode tab passes through the clearance gap and is connected and fixed to the output bus.

[0015] Optionally, the output electrode tabs include positive output tabs and negative output tabs located on both sides of the center line of the insulating partition, and the output bus connected to the positive output tabs and the output bus connected to the negative output tabs are fixed on the same bus support.

[0016] Optionally, in the first direction, the length of the insulating partition is not less than the length of the insulating film of the battery cell; in the third direction, the width of the insulating partition is not less than the maximum width of the electrode stack within the battery cell.

[0017] Optionally, the cell assembly module further includes a battery management system, which includes multiple slave control boards. The slave control boards are mounted and fixed on the side plate segment, and the slave control boards are electrically connected to the cell stack body corresponding to the side plate segment.

[0018] Optionally, the battery cell includes a pouch cell.

[0019] To achieve the above and other related objectives, this utility model also provides a battery pack, including the cell assembly module described above.

[0020] Optionally, the battery pack further includes an upper cover and a plate-shaped lower housing, the upper cover being sealed to the lower housing to define an installation space for accommodating the cell assembly module, the installation space being filled with coolant that immerses the cell stack.

[0021] To achieve the above and other related objectives, this utility model also provides an electrical device, including the battery cell assembly module as described above.

[0022] Optionally, the electrical device includes a vehicle, the bottom of which has an installation space, and the battery cell module is installed in the installation space.

[0023] As described above, the battery cell module, battery pack, and power supply device of this utility model have at least the following beneficial effects: multiple side plate segments are detachably connected to the connecting beam to provide clamping force for fixing the battery cell stack, which not only facilitates transportation but also allows for flexible setting of the number of side plate segments according to needs. This facilitates flexible adjustment of the space accommodating the battery cell stack based on the number of battery cell stacks, making assembly flexible and improving space utilization and reducing costs. Based on this, the output electrode busbar connected to the output electrode tab of the battery cell stack is fixed to the insulating partition through the busbar bracket, which not only achieves the limiting and fixing of the output electrode busbar but also eliminates the need for additional support structures to support the busbar bracket, simplifying the structure and assembly process, which is conducive to improving assembly efficiency and further improving space utilization and reducing costs. Attached Figure Description

[0024] Figure 1 is a partial structural schematic diagram of an embodiment of the battery cell assembly module of this utility model;

[0025] Figure 2 is a partially enlarged schematic diagram of the battery cell module in Figure 1;

[0026] Figure 3 is a schematic diagram of the connection between the busbar support and the insulating partition in Figure 1;

[0027] Figure 4 is a schematic diagram of the busbar support structure in Figure 1;

[0028] Figure 5 is a front view of the busbar support in Figure 4;

[0029] Figure 6 is a schematic diagram of the insulating partition in Figure 1;

[0030] Figure 7 is a simplified layout diagram of the battery pack in Figure 1;

[0031] Figure 8 is a structural schematic diagram of an embodiment of the battery pack of this utility model;

[0032] Figure 9 is a schematic diagram of the explosion of the battery pack in Figure 8;

[0033] Figure 10 is a simplified structural diagram of an embodiment of the electrical device of this utility model.

[0034] Part Number Explanation

[0035] The battery cell module 100, battery cell stack 1, battery cell 11, output electrode tab 12, positive output electrode tab 121, negative output electrode tab 122, connecting beam 2, side plate assembly 3, side plate segment 31, output electrode base 41, output electrode busbar 42, first locking element 43, busbar bracket 5, limiting groove 51, groove bottom wall 511, clearance gap 52, insulating partition 6, limiting block 61, limiting surface 611, slave control board 71, lower box 8, upper cover 9, battery pack 200, vehicle 300, installation space 301. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0037] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0038] Referring to Figures 1, 2, and 9, in some optional embodiments, this utility model provides a cell assembly module 100, which includes multiple cell stacks 1, connecting beams 2, two side plate assemblies 3, insulating partitions 6, busbar brackets 5, and output busbars 42. In addition to the above components, the cell assembly module may also include an output terminal base 41 and / or a battery management system (BMS). The multiple cell stacks 1 are arranged along a first direction, and each cell stack 1 includes multiple cells 11 stacked along a second direction. At least a portion of the cell stacks 1 have output terminal tabs 12. A connecting beam 2 is arranged between two adjacent cell stacks 1. There can be multiple connecting beams 2, distributed along a first direction. In this first direction, the side of a cell stack 1 located away from its adjacent cell stack 1 can be optionally equipped with a connecting beam 2, which helps to further improve the clamping stability of the corresponding cell stack 1. When a connecting beam 2 is provided on the side of a cell stack 1 located away from its adjacent cell stack 1, the output electrode base 41 can be mounted on this connecting beam 2. Two side plate groups 3 are distributed along a second direction on both sides of the cell stack 1. Each side plate group 3 includes multiple side plate segments 31 distributed along the first direction and detachably connected. The side plate segments 31 located on both sides of the same cell stack 1 are detachably connected to the two ends of the corresponding connecting beam 2. The side plate segments 31 can clamp and fix the cell stack 1 when connected to the connecting beam 2. A portion of the insulating partition 6 is clamped and fixed between two adjacent cells 11 within the same cell stack 1. A portion of the insulating partition 6 located between two adjacent cells 11 is bonded and fixed to the cells 11. Another portion of the insulating partition 6 extends between the two adjacent cells 11. The busbar bracket 5 is positioned and connected to the other portion of the insulating partition 6. The output busbar 42 is fixed to the busbar bracket 5 and connected to the output electrode tab 12. The output busbar 42 and the output electrode tab 12 can be welded together. The cell assembly module 100 can achieve voltage output through the output busbar 42. The output busbar 42 can be connected and fixed to the output electrode base 41 via a first locking member 43, which includes bolts, to simplify and facilitate the voltage output connection operation.

[0039] In this application, the first direction is perpendicular to the second direction. Specifically, the arrangement direction of the multiple cell stacks 1, the arrangement direction of the multiple side plate segments 31 in each side plate group 3, the length direction of the side plate segments 31, the arrangement direction of the multiple connecting beams 2, the length direction of the cell stack 1, the length direction of the cell 11, and the length direction of the insulating partition 6 are the same as the first direction, i.e., the X direction in the figures. The arrangement direction of the multiple cells 11 in each cell stack 1, the arrangement direction of the two side plate groups 3, the length direction of the connecting beams 2, the width direction of the cell stack 1, the thickness direction of the cell 11, and the thickness direction of the insulating partition 6 are the same as the second direction, i.e., the Y direction in the figures.

[0040] Optionally, multiple side plate segments 31 of the same side plate group 3 correspond one-to-one with multiple battery cell stacks 1. That is, each battery cell stack 1 has an independent side plate segment 31 arranged on each side along the second direction. The assembly is simple and flexible, and the number of side plate segments 31 in the side plate group 3 can be increased or decreased according to the actual number of battery cell stacks 1 to meet different charge requirements and facilitate universal configuration. Among them, the connecting beam 2 located between two adjacent battery cell stacks 1 can correspond to two battery cell stacks 1 at the same time. One end of two adjacent side plate segments 31 on the same side can be connected and fixed to the same connecting beam 2, which helps to simplify the structure.

[0041] Optionally, the battery cell 11 includes a pouch cell, the battery cell 11 has tabs, and a portion of the tabs of the battery cell 11 are formed as output tabs 12 of the battery cell stack 1.

[0042] Optionally, the output bus 42 includes a copper base, and the bus bracket 5 includes a plastic bracket. Furthermore, the output bus 42 and the bus bracket 5 can be riveted together for secure connection.

[0043] Optionally, the insulating partition 6 may include polypropylene (PP) board, polycarbonate (PC) board, or polybutylene terephthalate (PBT) board, etc.

[0044] In the above embodiment, the battery cell assembly module 100, with the side plate assembly 3 cooperating with the connecting beam 2, can provide pre-tightening force to clamp the battery cell stack 1 to fix the battery cell stack 1. The structure is stable and does not require additional support plates to support the battery cell stack 1, which can meet the transportation requirements, thus reducing production steps and costs. In addition, the side plate assembly 3 includes multiple independently set side plate segments 31. The side plate segments 31 can be detachably connected to each other and to the connecting beam 2, which facilitates flexible assembly according to the number of battery cell stacks 1, avoids space waste, and helps to improve space utilization and further reduce costs. Furthermore, the output electrode busbar 42 connected to the output electrode tab 12 of the battery cell stack 1 is positioned and assembled on the insulating partition 6 through the busbar bracket 5. The insulating partition 6 can provide stable support for the busbar bracket 5, thereby achieving the limiting and fixing of the busbar bracket 5, and thus achieving the limiting and fixing of the output electrode busbar 42. The position of the output electrode busbar 42 is not easily shifted, the structure is stable, and it helps to reduce the difficulty of assembly and positioning.

[0045] Referring to Figures 1 to 6, in some alternative embodiments, the busbar bracket 5 and the insulating partition 6 are positioned and assembled by a limiting component.

[0046] Optionally, the limiting component includes a limiting block 61 and a limiting groove 51. The limiting groove 51 is formed on the busbar bracket 5. A portion of one end of the insulating partition 6 extends along a first direction to form the limiting block 61. The limiting block 61 is adapted to extend into the limiting groove 51 and be inserted into the limiting groove 51 for limiting. Furthermore, the limiting groove 51 is a U-shaped groove with its opening facing the limiting block 61. The bottom wall 511 of the limiting groove 51 abuts against the limiting surface 611 of the limiting block 61 to limit it in a third direction. Specifically, the opening of the busbar bracket 5 is aligned with the limiting block 61. The busbar bracket 5 moves along the third direction to approach the limiting block 61, causing the limiting block 61 to extend into the limiting groove 51. The limiting block 61 is located between the two side walls of the limiting groove 51. The busbar bracket 5 continues to move along the third direction until the bottom wall 511 of the limiting groove 51 abuts against the limiting surface 611 of the limiting block 61. The busbar bracket 5 is then assembled in place, completing the positioning and assembly of the busbar bracket 5 and the insulating partition 6. In addition, the U-shaped groove can engage with the limiting block 61, meaning that the U-shaped groove can provide an elastic preload to hold the limiting block 61 in place, which helps to improve the stability of the busbar bracket 5 installed on the insulating partition 6.

[0047] In this application, the height direction of the cell stack 1, the height direction of the connecting beam 2, the height direction of the side plate section 31, the height direction of the cell 11, the width direction of the insulating partition 6, and the third direction are the same, namely the Z direction in the figure.

[0048] Optionally, the main body of the cell stack 1 (the part of the cell stack 1 excluding the tabs) and the output bus 42 are located on opposite sides of the bus support 5 in the first direction. The bus support 5 is provided with a clearance gap 52, and the output tab 12 passes through the clearance gap 52 and is connected and fixed to the output bus 42.

[0049] In the above embodiment, the busbar bracket 5 and the insulating partition 6 of the battery cell module 100 are positioned and assembled through a limiting component. The assembly of the busbar bracket 5 and the insulating partition 6 is simple, convenient and accurate, which is conducive to the accurate positioning, assembly and fixation of the output busbar 42.

[0050] Referring to Figures 1 to 5 and Figure 7, in some optional embodiments, the output electrode tab 12 includes a positive output electrode tab 121 and a negative output electrode tab 122 located on both sides of the center line of the insulating partition 6. In other words, the insulating partition 6 insulates and separates the battery cell 11 with the positive output electrode tab 121 and the battery cell 11 with the negative output electrode tab 122. The output electrode bus 42 connected to the positive output electrode tab 121 and the output electrode bus 42 connected to the negative output electrode tab 122 are fixed on the same bus support 5 and insulated from each other.

[0051] Optionally, in the first direction, the length of the insulating partition 6 is not less than the length of the insulating film of the battery cell 11; in the third direction, the width of the insulating partition 6 is not less than the maximum width of the electrode stack within the battery cell 11. The insulating partition 6 fully insulates and separates the two battery cells 11 with output electrode tabs 12, ensuring insulation effect, which helps prevent electrical failure of the aluminum-plastic film of the battery cell 11 with output electrode tabs 12, and helps improve electrical safety.

[0052] In the above embodiment, the battery cell module 100, the insulating partition 6 can not only fully separate the two battery cells 11 with output electrode tabs 12 to play an insulating role and reduce the risk of electrical failure, but also provide installation support for the two output electrode busbars 42 through the same busbar bracket 5, which is conducive to simplifying the structure, reducing assembly steps, reducing costs and improving space utilization.

[0053] Referring to Figures 8 and 9, in some optional embodiments, the battery management system includes a main control board and a plurality of slave control boards 71. The slave control boards 71 ​​are mounted and fixed on the side plate section 31 and are electrically connected to the cell stack 1 corresponding to the side plate section 31.

[0054] Optionally, each side panel segment 31 is equipped with a slave control board 71, which is electrically connected to the corresponding cell stack 1 of the side panel segment 31 to diagnose and control the cell stack 1 based on the voltage signals of multiple cells 11 in the cell stack 1. Specifically, the main control board is connected to multiple slave control boards 71. The slave control boards 71 ​​can acquire the voltage signals of the cells 11 through a flexible printed circuit (FPC), and the main control board diagnoses and controls each cell 11 separately through the multiple slave control boards 71.

[0055] The battery cell module 100 in the above embodiment can form a battery pack without a casing after assembly, so that it can be directly installed and used in the future, which helps to simplify the subsequent installation and use process.

[0056] Referring to Figures 8 and 9, in some alternative embodiments, the present invention also provides a battery pack 200, including the cell assembly module 100 as described in any of the above embodiments.

[0057] Optionally, the battery pack 200 also includes an upper cover 9 and a plate-shaped lower housing 8. Side plate segments 31 are connected to the lower housing 8 to mount the cell stack 1 onto the lower housing 8. The upper cover 9 and the lower housing 8 are sealed together to define an installation space for accommodating the cell assembly module 100. The installation space is filled with coolant to immerse the cell stack 1. Furthermore, the outer shell formed by the connection of the upper cover 9 and the lower housing 8 has an inlet and an outlet. Coolant is filled into the installation space from the inlet until it flows out from the outlet, ensuring the installation space is completely filled. The cell stack 1 within the installation space is fully immersed in the coolant, achieving immersion cooling with good cooling effect. Additionally, the side plate assembly 3 and connecting beam 2 in the cell assembly module 100 cooperate to fix the cell stack 1, eliminating the need for additional beam structures on the outer periphery of the plate-shaped lower housing 8 to secure the cell stack 1. This simplifies the structure, reduces weight, and lowers costs.

[0058] Optionally, the battery pack 200 contains only one cell module 100. The assembled cell module 100 can be directly installed into the lower casing 8 of the battery pack 200, simplifying the subsequent installation steps and making the installation simple and efficient.

[0059] Specifically, referring to Figure 9, during the assembly process, the side plate section 31 of the side plate assembly 3 is connected to the connecting beam 2 to clamp and fix the corresponding cell stack 1. The slave control board 71 of the battery management system is fixed on the side plate section 31 and electrically connected to the corresponding cell stack 1. After the cell assembly module 100 is assembled, the assembled cell assembly module 100 is placed on the lower housing 8. The side plate section 31 is connected and fixed to the lower housing 8 to fix the cell assembly module 100. The upper cover 9 is installed, and the upper cover 9 is sealed to the lower housing 8 to define the installation space. Coolant is poured into the installation space, and the coolant immerses the cell stack 1 to achieve immersion cooling, thus completing the final assembly.

[0060] The battery pack of the above embodiment, after the cell assembly module 100 is assembled, can be directly installed on the lower housing 8 of the battery pack. The structure is simple and the installation operation is simple and convenient.

[0061] Referring to Figures 1 and 10, in some alternative embodiments, the present invention also provides an electrical device including the battery cell module 100 as described in any of the above embodiments.

[0062] Optionally, the electrical device includes a vehicle 300, the bottom of which has an installation space 301. The battery cell module 100 is installed within the installation space 301 to form the vehicle's power supply module. Further, the vehicle 300 has a chassis with the installation space 301 within it. The battery cell module 100 can be connected to the chassis, allowing it to be directly installed within the chassis's installation space 301. This design is simple, compact, and improves space utilization. Specifically, the side plate segment 31 of the battery cell module 100 is connected to the chassis to secure the battery cell stack 1.

[0063] Optionally, the vehicle contains only one battery cell module 100. The assembled battery cell module 100 can be directly installed into the installation space 301 of the electrical device. The overall structure of the battery cell module 100 does not require secondary assembly, which simplifies the subsequent installation steps and makes the installation simple and efficient. In addition, the vehicle chassis protects the battery cell module 100, eliminating the need for an additional outer shell to protect it, which simplifies the structure and helps reduce costs.

[0064] The battery cell module 100, battery pack 200, and electrical device of this utility model are connected and cooperated by the side plate group 3 and the connecting beam 2 to secure the battery cell stack 1. The overall structure is stable and reliable. While meeting transportation requirements, the structure is simplified. Moreover, each side plate segment 31 of the side plate group 3 is independently detachable, and the side plate segments 31 can be flexibly set according to the number of battery cell stacks 1, which is flexible in assembly, which is conducive to improving space utilization and reducing costs. In addition, the output electrode bus 42 connected to the output electrode tab 12 of the battery cell stack 1 is positioned and installed on the insulating partition 6 through the bus bracket 5. The insulating partition 6 not only realizes the limiting and fixing of the output electrode bus 42, but also ensures that the output electrode bus 42 is reliably positioned and is not prone to positional deviation, which is conducive to improving assembly efficiency and quality. The insulating partition 6 also achieves the insulation separation of the battery cells 11 with output electrode tab 12, reducing the risk of electrical failure. This is conducive to simplifying the structure, improving space utilization, improving safety performance, and reducing costs.

[0065] In the description of this specification, the references to terms such as "this embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A battery cell assembly module, characterized in that, include: The system comprises: multiple battery cell stacks arranged along a first direction, each battery cell stack including multiple battery cells stacked along a second direction, at least a portion of the battery cell stacks having output electrode tabs; a connecting beam disposed between two adjacent battery cell stacks; two side plate assemblies distributed along the second direction on both sides of the battery cell stacks, each side plate assembly including multiple side plate segments distributed along the first direction and detachably connected, the side plate segments located on both sides of the same battery cell stack being detachably connected to the two ends of the corresponding connecting beam, the side plate segments being able to clamp and fix the battery cell stack when connected to the connecting beam; an insulating partition, a portion of which is clamped and fixed between two adjacent battery cells within the same battery cell stack; a busbar bracket, another portion of which extends between the two adjacent battery cells, the busbar bracket being positioned and engaged with the other portion of the insulating partition; and an output electrode busbar fixed on the busbar bracket and connected to the output electrode tabs.

2. The cell assembly module according to claim 1, characterized in that, The busbar bracket and the insulating partition are positioned and assembled using a limiting component.

3. The battery cell module according to claim 2, characterized in that, The limiting component includes a limiting block and a limiting groove. The limiting groove is formed on the busbar support. A portion of one end of the insulating partition extends along the first direction to form the limiting block. The limiting block is adapted to extend into the limiting groove and be inserted into the limiting groove for limiting.

4. The cell assembly module according to claim 3, characterized in that, The limiting groove is a U-shaped groove with its opening facing the limiting block. The bottom wall of the limiting groove abuts against the limiting surface of the limiting block to limit the position in a third direction.

5. The cell assembly module according to claim 1, characterized in that, The main body of the battery cell stack and the output bus are located on opposite sides of the bus support. The bus support is provided with clearance gaps, and the output electrode tabs pass through the clearance gaps and are connected and fixed to the output bus.

6. The cell assembly module according to claim 1, characterized in that, The output electrode tabs include positive output tabs and negative output tabs located on both sides of the center line of the insulating partition. The output bus connected to the positive output tab and the output bus connected to the negative output tab are fixed on the same bus support.

7. The cell assembly module according to claim 1, characterized in that, In the first direction, the length of the insulating partition is not less than the length of the insulating film of the battery cell; in the third direction, the width of the insulating partition is not less than the maximum width of the electrode stack within the battery cell.

8. The cell assembly module according to claim 1, characterized in that, The cell assembly module also includes a battery management system, which includes multiple slave control boards. The slave control boards are mounted and fixed on the side plate segment, and the slave control boards are electrically connected to the cell stack body corresponding to the side plate segment.

9. The cell assembly module according to claim 1, characterized in that, The battery cells include pouch cells.

10. A battery pack, characterized in that, Includes the cell assembly module as described in any one of claims 1 to 9.

11. The battery pack according to claim 10, characterized in that, The battery pack also includes an upper cover and a plate-shaped lower housing. The upper cover and the lower housing are sealed together to define an installation space for accommodating the battery cell assembly module. The installation space is filled with coolant that immerses the battery cell stack.

12. An electrical appliance, characterized in that, Includes the cell assembly module as described in any one of claims 1 to 9.

13. The electrical appliance according to claim 12, characterized in that, The electrical device includes a vehicle, the bottom of which has an installation space, and the battery cell module is installed in the installation space.

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