An electric cell module

Abstract

The utility model belongs to battery technical field discloses a kind of battery module, including assembly carrier, component one and component two, and intermediate partition;Component one and component two are all side by side arranged with multiple battery, and component one and component two are arranged in assembly carrier;The intermediate partition is arranged between component one and component two, and the intermediate partition is hollow structure, and the intermediate partition has water inlet and water outlet;The hollow space of the intermediate partition gradually decreases from middle part to end part, so that the adjacent battery between same component has stagger, and stagger direction and the side-by-side direction of multiple battery are preset angle.The utility model can realize sufficient heat exchange to the area where each battery is located, and then improve heat dissipation effect.

Description

Technical Field

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

[0002] Currently, a type of battery cell module optimizes the assembly space by integrating two smaller modules into a larger module, which can more accurately fit the internal space of the battery pack. In other words, this type of battery cell module can significantly reduce the gap between each small module, thereby improving the space utilization of the battery pack by reducing these gaps, and making full use of the redundant space that was originally scattered among multiple small modules.

[0003] However, such battery cell modules still have some drawbacks. For example, due to the high density of the battery cells, heat tends to accumulate, especially in the middle area of ​​the integrated structure where there is a lack of heat dissipation measures. This prevents the heat in this area from being dissipated in time, which will directly affect the cycle life and charge / discharge performance of the battery cells in the long run. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model discloses a battery cell module that enables sufficient heat exchange in the areas where each battery cell is located, thereby improving heat dissipation.

[0005] The specific technical solution of this utility model is as follows: A battery cell module, comprising: Assembly carrier; Component 1 and Component 2, each containing multiple battery cells arranged side-by-side, are housed within an assembly carrier; and A middle partition is disposed between component one and component two. The middle partition has a hollow structure and has an inlet and an outlet. Among them, component one and component two are symmetrical with respect to the middle partition; the hollow space of the middle partition gradually decreases from the middle to the end so that adjacent cells in the same component are misaligned, and the misalignment direction and the side-by-side direction of multiple cells are at a preset angle.

[0006] The battery cell module in this application has a dual-component structure, which integrates two smaller components (component one and component two) into a larger component (battery cell module). This application uses a middle partition to separate component one and component two. In actual use, by introducing cooling medium into the middle partition, the heat generation problem of component one and component two can be effectively solved. Since the hollow space of the middle partition gradually decreases from the middle to the ends, the cooling medium flow rate in the middle of the middle partition is greater than the cooling medium flow rate at both ends of the middle partition. In other words, based on this structure, more cooling medium can be covered on the heat-generating part in the middle of the battery cell module, thereby achieving more sufficient heat exchange and heat dissipation in this part.

[0007] Preferably, the sidewall of the intermediate partition has a stepped structure so that multiple cells in the same component are arranged side by side in a gradient. Alternatively, the sidewalls of the intermediate partition may have an arc-shaped structure, so that the multiple cells of component one and component two form a petal-shaped structure.

[0008] The structure is simple, easy to manufacture and install, and has a reasonable structure with a smaller assembly volume, which can well meet the usage requirements.

[0009] Preferably, the assembly carrier comprises: A plate, the plate being configured as a contact plate for a battery cell; An end plate located at the end of the plate, the end plate and the plate forming the accommodating space for component one and component two; and Cable ties are used to bind component one and component two within the containment space.

[0010] The plate can connect to power for component one and component two, and can also serve as a carrier for component one and component two. After the end plates are used to limit the two ends, the strapping can bind component one and component two, thereby fixing the entire module into a rigid whole, thus meeting the actual use requirements.

[0011] Preferably, the intermediate partition includes: Side plate one and side plate two, which are configured as the two side walls of the middle partition, and side plate one and side plate two are respectively provided with a water inlet and a water outlet; and An air bag is disposed between side plate one and side plate two, and the air bag has air holes.

[0012] Battery cell modules require stringent assembly precision. Due to dimensional errors in the cells themselves and inconsistent tension of the strapping, large gaps may appear between the strapping and the cells. In such cases, the strapping cannot provide adequate pre-tension, leading to deformation during use and performance degradation. Furthermore, the expansion force of the battery cell module during use poses a significant safety hazard in the fixed structure. This application addresses these shortcomings by incorporating an airbag. During assembly, the inflation of the airbag drives the corresponding cells to shift, thereby preventing assembly gaps between the strapping and the cells. During use, the gas flow within the airbag absorbs the compressive force generated by the cell expansion, providing necessary cushioning and better meeting usage requirements.

[0013] Preferably, the air bag includes multiple sub-bags arranged side by side, with adjacent sub-bags interconnected and having partitions.

[0014] When the air bag is inflated as a whole, the size of the inflated air bag cannot adequately accommodate the displacement of all the battery cells. Therefore, some battery cells may still not be able to achieve a stable fit with the strapping. Based on this, the air bag is divided into multiple sub-bags using multiple dividing sections. After each sub-bag is inflated, there are relative concave parts between adjacent sub-bags. At this time, the relatively convex parts of each sub-bag abut against side plate one and side plate two. At the same time, after one sub-bag is fully inflated, the gas flows into the next sub-bag, thereby achieving better stable assembly of the battery cells.

[0015] Preferably, the end plate is provided with a positioning groove, the bottom of the positioning groove is arc-shaped, and the positioning groove cooperates with the strapping.

[0016] This structure enables the proper positioning of the strapping, allowing the strapping to bind components one and two with appropriate force, thereby meeting the stability requirements of the entire battery cell module.

[0017] Preferably, the end plate is provided with a positioning plate, and the positioning plate is provided with a flange to limit component one and component two in the accommodating space.

[0018] The flanged part can position the assembly of component one and component two, thereby simplifying installation and improving assembly efficiency.

[0019] Preferably, the flanged portion includes: Flanged edge one, flanged edge two, and flanged edge three, wherein flanged edge one and flanged edge two are located at the two ends of the positioning plate, and flanged edge two is located between flanged edge one and flanged edge three.

[0020] This structure enables three-sided positioning of component one and component two, thereby providing assembly accuracy.

[0021] Preferably, insulating foam is provided between adjacent cells of the same component.

[0022] The insulating foam provides electrical insulation, ensuring electrical safety. Its deformability also ensures the stability of the binding straps and effectively absorbs shocks from external impacts.

[0023] Preferably, any three adjacent cells in the same component are cell one, cell two, and cell three, wherein the negative terminal of cell one is close to the positive terminal of cell two, and the negative terminal of cell two is close to the positive terminal of cell three. In the parallel direction of the cells, the cell at the first end of the component is used for external connection, and the cell at the first end of the component is used for external connection; the cell at the end of the first component and the cell at the end of the second component are connected in series, and the positive terminal of the cell at the end of the first component and the negative terminal of the cell at the end of the second component are close to each other, or the negative terminal of the cell at the end of the first component and the positive terminal of the cell at the end of the second component are close to each other. The polarity of the external electrode of component one is opposite to that of the external electrode of component two.

[0024] This structure makes the electrical conduction structure simple and easy to implement, effectively simplifying the structure, reducing the size, and achieving miniaturization.

[0025] Compared with existing technologies, this invention can reduce the heat dissipation dead angle in the battery cell module, improve the heat exchange efficiency of the battery cell, and thus improve the cooling effect. At the same time, this invention can well meet the assembly requirements, effectively reduce the assembly gap, and effectively extend the service life of the battery cell module. In addition, this invention has a simple structure, small size, and good deformation capability, effectively avoiding the misalignment of the battery cells inside the battery cell module. Attached Figure Description

[0026] Figure 1 This is an exploded view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model; Figure 3 This is a schematic diagram of a middle partition in an embodiment of the present utility model; Figure 4 This is a schematic diagram of a middle partition in an embodiment of the present utility model; Figure 5 This is another schematic diagram of the intermediate partition in an embodiment of the present utility model; Figure 6 for Figure 5 Top view Figure 7 This is a schematic diagram of the air bag in this utility model; Figure 8 for Figure 7 Enlarged view of point A; Figure 9 This is a schematic diagram of the end plate in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the power connection of the battery cell in an embodiment of this utility model.

[0027] In the diagram: 100-Component 1; 200-Component 2; 1-Intermediate partition; 2-Battery cell; 3-Step section; 4-Panel; 5-End plate; 6-Bundling strap; 7-Side plate 1; 8-Side plate 2; 9-Air bag; 10-Air hole; 11-Sub-bag; 12-Separator; 13-Ventilation port; 14-Positioning groove; 15-Positioning plate; 16-Flange 1; 17-Flange 2; 18-Flange 3; 19-Insulating foam; 20-Battery cell 1; 21-Battery cell 2; 22-Battery cell 3; 23-Electrode sheet. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0029] like Figures 1-5 As shown, a battery cell module includes an assembly carrier, a first component 100, a second component 200, and a middle partition 1. Multiple battery cells 2 are arranged side-by-side in both the first component 100 and the second component 200, which are disposed within the assembly carrier. The middle partition 1 is disposed between the first component 100 and the second component 200. The middle partition 1 has a hollow structure and includes an inlet and an outlet. The hollow space of the middle partition 1 gradually decreases from the middle to the end, so that adjacent battery cells 2 in the same component are misaligned, with the misalignment direction forming a preset angle with the side-by-side direction of the multiple battery cells 2.

[0030] In this embodiment, the battery cell 2 is an energy storage cell, which can be a lithium-ion battery (such as a lithium iron phosphate battery). The battery cell 2 is square in shape, and multiple battery cells 2 are arranged along a first direction to form a component 100 or a component 200. That is, both component 100 and component 200 have multiple battery cells 2 arranged along the first direction, while component 100 and component 200 are parallel in a second direction, which is perpendicular to the first direction. This structure is relatively simple. Based on this structure, the misalignment direction between battery cells 2 in the same component is perpendicular to the parallel direction of battery cells 2. That is, the preset angle is 90°. This structure is simple and can better achieve miniaturization. Based on this, in this embodiment, as... Figure 3 As shown, the sidewall of the intermediate partition 1 has a stepped structure so that multiple battery cells 2 in the same component are arranged side by side in a gradient. In order to improve the structural stability of the battery cell module and to minimize the volume, component one 100 and component two 200 are symmetrical with respect to the intermediate partition 1. Therefore, the stepped structure in this embodiment includes multiple step portions 3, that is, each step portion 3 corresponds to one of the battery cells 2 in component one 100 and one of the battery cells 2 in component two 200, and these two battery cells 2 are symmetrical with respect to the step portion 3.

[0031] In use, the cooling medium is introduced into the intermediate partition 1 through the inlet. Because the space in the middle of the partition 1 is relatively large, the flow rate of the cooling medium in this area is large, resulting in relatively high heat exchange efficiency. Therefore, the heat dissipation dead zone that easily forms between the two rows of components can be dissipated through a large amount of cooling medium. In other words, the intermediate partition 1 can accelerate the transfer of this heat to the outside, thereby reducing heat dissipation dead zones and improving heat exchange efficiency. In this embodiment, an inlet is provided at the top of the intermediate partition 1, and an outlet is provided on the side, thus achieving smooth circulation of the cooling medium. The cooling medium is a mixture of water and ethylene glycol, preferably in a 1:1 ratio.

[0032] like Figure 4 As shown, in some other embodiments, the sidewall of the intermediate partition 1 has an arc-shaped structure, that is, after assembling component 100 and component 200, it has a petal shape. Although this structure can solve the heat dissipation difficulties of the heat dissipation dead corner, the overall structure is relatively complex and not conducive to miniaturization. For assembly, the positioning of the battery cell 2 is not easy to achieve, and the battery cell 2 is prone to deviate along the arc-shaped path of the sidewall, thereby reducing stability.

[0033] like Figure 1 As shown, in this embodiment, the assembly carrier includes a plate 4, an end plate 5 located at the end of the plate 4, and a strapping 6; the plate 4 is configured as the contact plate for the battery cell 2; the end plate 5 and the plate 4 constitute the accommodating space for component one 100 and component two 200; the strapping 6 is used to bind component one 100 and component two 200 in the accommodating space. This embodiment provides two strapping 6, arranged side-by-side in a third direction, the third direction being perpendicular to both the first and second directions. In this embodiment, the strapping 6 is mainly made of high-strength stainless steel or galvanized steel, thus possessing good mechanical properties and weather resistance, maintaining a stable physical form in extreme environments. When galvanized steel is used, the strapping 6 undergoes surface treatment technology to enhance its corrosion resistance, making it suitable for battery systems in outdoor or humid environments. In this embodiment, the surface of the strapping 6 is covered with an insulating layer to prevent current from directly passing through the strapping 6 and causing a short circuit, ensuring the electrical safety of the battery system. In this embodiment, the end plate 5 is made of extruded aluminum. The end plate 5 has mounting holes for fixing the cell module, ensuring the cell module is securely installed in the battery system and preventing displacement of the cell 2 due to vibration, impact, or other factors during transportation and use, which could affect battery performance. The contact plate is a cell contact system (CCS), including a busbar, a flexible printed circuit board (FPC) and / or a rigid printed circuit board (PCB), and an insulating support structure. In some embodiments, it also includes a temperature sensor and / or voltage acquisition terminals.

[0034] In this embodiment, the cavities at both ends of the middle partition 1 are small, while the cavity in the middle is large. Based on this structure, the binding strap 6 forms an arc shape on the side of the battery cell module after binding, thereby pressing the battery cell 2 onto the middle partition 1 at an adaptive angle. This avoids the situation where the binding strap 6 cannot restrain the battery cell 2. It should be emphasized that the structure of the middle partition 1 can achieve a good heat dissipation effect, ensuring that the largest heat-generating part in the middle of the battery cell module has the most cooling medium, thereby allowing for sufficient heat exchange between the battery cell 2 in the middle part.

[0035] Furthermore, such as Figures 5-7As shown, in this embodiment, the intermediate partition 1 includes a first side plate 7 and a second side plate 8, as well as an air bag 9. The first side plate 7 and the second side plate 8 are configured as the two side walls of the intermediate partition 1, and the first side plate 7 and the second side plate 8 are respectively provided with a water inlet and a water outlet. The air bag 9 is disposed between the first side plate 7 and the second side plate 8, and the air bag 9 has air holes 10. The first side plate 7 and the second side plate 8 are both formed by brazing aluminum plates. After the air bag 9 is vented, it expands, thereby achieving a small drive on both sides of the battery cell 2 through the displacement of the first side plate 7 and the second side plate 8. That is, after the binding strap 6 is completed, by venting the air bag 9 to expand, the battery cell 2 is stably fixed between the binding strap 6 and the first side plate 7 (or the second side plate 8), thereby eliminating the assembly gap between the binding strap 6 and the first side plate 7 (or the second side plate 8), thereby improving the assembly stability of the battery cell 2. In this embodiment, the air bag 9 is made of a composite fabric of nylon and polyurethane, specifically including a nylon base layer and a polyurethane coating. The nylon base layer has high strength and tear resistance, withstands the tensile stress of repeated inflation / deflation, prevents the air bag 9 from rupturing, and ensures its service life. The polyurethane coating achieves high airtightness, preventing gas leakage, while also improving the fabric's flexibility, allowing the air bag 9 to fit snugly against the battery cell 2 and ensuring the battery cell 2's position. In this embodiment, the gas pressure inside the air bag 9 ranges from 10 to 80 kPa. Therefore, the size of the battery cell module in the second direction can be ensured by adjusting the inflation pressure; that is, the size of the battery cell module in the second direction can be appropriately adjusted by controlling the inflation pressure.

[0036] When assembling the strapping 6, the air bag 9 is not inflated. It is first glued to the side plate 7 and side plate 8 using 3M adhesive. At this time, the size of the battery cell module in the second direction is relatively small, and the strapping 6 can be easily fitted over the outside of all the battery cells 2. After the strapping 6 is fitted, the air bag 9 is inflated, causing the side plate 7 and side plate 8 to move in the forward and / or reverse direction in the second direction, thereby causing the battery cell 2 to move in the forward and / or reverse direction in the second direction, thus being stably restrained by the strapping 6. On this basis, the air bag 9 can absorb the compressive force when the battery cell 2 expands, absorbing part of the manufacturing tolerance.

[0037] To achieve displacement adjustment of the battery cell 2 in the second direction, the air bag 9 needs to cover all the battery cells 2 arranged along the first direction. Therefore, when the air bag 9 is inflated, all the battery cells 2 may be displaced. Although gas is fluid, it may still cause some battery cells 2 to be mispositioned. Therefore, the air bag 9 further includes multiple sub-bags 11 arranged side-by-side, with adjacent sub-bags 11 interconnected and having a partition 12. During battery cell 2 position adjustment, each sub-bag 11 exerts force on side plate 7 and side plate 8 only at its location. Therefore, during the gradual expansion of each sub-bag 11, the relative positions of side plate 7 and side plate 8 driven by the previous sub-bag 11 remain unchanged, resulting in better battery cell 2 positioning when the next sub-bag 11 expands. Compared to the air bag 9 expanding as a whole, the interference caused by the relative movement of adjacent sub-bags 11 driving the corresponding battery cells 2 is smaller, preventing the expansion of the next sub-bag 11 from affecting the positioning of the battery cell 2 by the previous sub-bag 11, thus improving assembly stability. Figure 7 and Figure 8 As shown, in this embodiment, the extending direction of the partition 12 is perpendicular to the arrangement direction of the battery cells 2, so that after two adjacent sub-bags 11 in the same assembly expand, a recess is formed at the partition 12; a vent 13 is provided between at least one end of the partition 12 and the air bag 9. Specifically, the partition 12 has vents 13 above and below, which can realize gas flow. When inflating, the air hole 10 is opened. Since the vent 13 is small, each sub-bag 11 expands basically one by one. The reaction force of the middle partition 1 and the strapping 6 on the corresponding sub-bag 11 can be used to guide the gas, so that the gas can quickly enter from one sub-bag 11 into the next sub-bag 11, thereby achieving reliable and stable installation of all battery cells 2. It is known that during the expansion of the previous sub-bag 11, it does not mean that the gas will not flow into the next sub-bag 11, but the flow rate is small and cannot effectively drive the side plate 7 and / or the side plate 8.

[0038] Therefore, this embodiment also discloses a method for assembling a battery cell module, including the following steps: S101. Multiple battery cells 2 are configured into component one 100 and component two 200, so that the battery cells 2 in component one 100 and component two 200 are arranged in a stepped manner in the same direction. S102. Attach the air bag 9 between component 100 and component 200; S103. Place the strapping 6 on the outside of component 100 and component 200; S104. Inflate the air bag 9 to make the air bag 9 expand and thus restrain component 100 and component 200 by the strapping 6.

[0039] Furthermore, a side plate 7 is placed on the side of component 100 near component 200, and a side plate 8 is placed on the side of component 200 near component 100. An air bag 9 is attached between side plate 7 and side plate 8. After the strapping 6 is applied and the air bag 9 is inflated, the sub-bags 11 separated by the air bag 9 expand one by one along the first direction, thereby ensuring that each battery cell 2 can be stably restrained by the strapping 6, thus completing a stable assembly.

[0040] In this embodiment, as Figure 9 As shown, the end plate 5 is provided with a positioning groove 14, the bottom of which is arc-shaped. The positioning groove 14 cooperates with the binding strap 6. In this embodiment, the binding strap 6 is positioned in the positioning groove 14 to restrain the battery cell 2, resulting in a simple structure and convenient operation. Compared to the arc-shaped side formed by the binding strap 6 binding the battery cell module, the binding strap 6 has a mating part with an arc of nearly 90°. Through the mating part cooperating with the arc-shaped bottom of the positioning groove 14, the binding structure is more stable and the force is more evenly distributed.

[0041] In this embodiment, as Figure 9 As shown, the end plate 5 is provided with a positioning plate 15, and the positioning plate 15 is provided with a flange to limit component 100 and component 200 in the accommodating space. Further, the flange includes flange one 16, flange two 17, and flange three 18. Flanged flange one 16 and flange three 18 are located at opposite ends of the positioning plate 15, and flange two 17 is located between flanged flange one 16 and flange three 18. Flanged flange one 16, flange two 17, and flange three 18 constitute a limiting structure. The positioning plate 15 extends as a whole along a second direction, with three edges folded to form flanged flange one 16, flange two 17, and flange three 18 facing the first direction. Thus, flanged flange one 16 and flange three 18 determine the dimensions in the second direction, and flanged flange two 17 determines the relative positions of component 100 and component 200 in the assembly carrier.

[0042] like Figure 10 As shown, to better facilitate the installation of the battery cell 2, insulating foam 19 is provided between adjacent battery cells 2 in the same component. The insulating foam 19 not only provides reliable electrical insulation and effectively ensures electrical safety, but also has excellent deformability, which can effectively ensure the binding stability of the strapping 6. At the same time, when encountering external impact, the foam can also fully exert its shock absorption effect, further improving the overall safety and reliability of use.

[0043] In this embodiment, any three adjacent cells 2 in the same component are cell one 20, cell two 21, and cell three 22. The negative terminal of cell one 20 is close to the positive terminal of cell two 21, and the negative terminal of cell two 21 is close to the positive terminal of cell three 22. In the parallel direction of the cells 2, the cell 2 at the beginning of component one 100 is used for external connection, and the cell 2 at the beginning of component two 200 is used for external connection. The cell 2 at the end of component one 100 and the cell 2 at the end of component two 200 are connected in series, and the positive terminal of the cell 2 at the end of component one 100 and the negative terminal of the cell 2 at the end of component two 200 are close to each other. The polarity of the external electrode of component one 100 is opposite to that of the external electrode of component two 200. In some other embodiments, the negative terminal of the cell 2 at the end of component one 100 and the positive terminal of the cell 2 at the end of component two 200 are close to each other.

[0044] This structure facilitates electrical connection, enabling rapid connection between the individual battery cells 2 via electrode plates 23, avoiding complex cable wiring and the safety hazards associated with it. In both Component 100 and Component 200, the battery cells 2 are sequentially connected via a square wave structure, achieving a simple structure and convenient connection. Specifically, the battery cells 2 in both Component 100 and Component 200 are sequentially connected via electrode plates 23. The current guiding direction formed by multiple electrode plates 23 follows a preset trajectory in a square wave structure. Furthermore, for Component 100 and Component 200, the square wave structure consists of alternating horizontal and vertical current segments. As one implementation, the horizontal current segments extend in the same direction and have equal lengths, as do the vertical current segments. Along the trajectory of the square wave structure, one electrode of the preceding battery cell 2 is electrically connected to the other electrode of the following battery cell 2 via a corresponding electrode plate 23, allowing current to flow sequentially through each battery cell 2 and be conducted alternately along the horizontal and vertical current segments.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A battery cell module, characterized in that, include: Assembly carrier; Component 1 and Component 2, each having multiple battery cells arranged side by side, are disposed in an assembly carrier; as well as A middle partition is disposed between component one and component two. The middle partition has a hollow structure and has an inlet and an outlet. Among them, component one and component two are symmetrical with respect to the middle partition; the hollow space of the middle partition gradually decreases from the middle to the end so that adjacent cells in the same component are misaligned, and the misalignment direction and the side-by-side direction of multiple cells are at a preset angle.

2. The battery cell module as described in claim 1, characterized in that, The sidewall of the intermediate partition has a stepped structure so that multiple cells in the same component are arranged side by side in a gradient. Alternatively, the sidewalls of the intermediate partition may have an arc-shaped structure, so that the multiple cells of component one and component two form a petal-shaped structure.

3. A cell module as described in claim 1, characterized in that, The assembly carrier includes: A plate, the plate being configured as a contact plate for a battery cell; An end plate located at the end of the plate, the end plate and the plate forming the accommodating space for component one and component two; and Cable ties are used to bind component one and component two within the containment space.

4. A cell module as described in claim 3, characterized in that, The intermediate partition includes: Side plate one and side plate two, which are configured as the two side walls of the middle partition, and side plate one and side plate two are respectively provided with a water inlet and a water outlet; and An air bag is disposed between side plate one and side plate two, and the air bag has air holes.

5. A cell module as described in claim 4, characterized in that, The air bag includes multiple sub-bags arranged side by side, with adjacent sub-bags interconnected and having partitions.

6. A cell module as described in claim 3, characterized in that, The end plate is provided with a positioning groove, the bottom of which is arc-shaped, and the positioning groove cooperates with the strapping.

7. A cell module as described in claim 6, characterized in that, The end plate is provided with a positioning plate, and the positioning plate is provided with a flange to limit component one and component two in the accommodating space.

8. A cell module as described in claim 7, characterized in that, The flanged portion includes: Flanged edge one, flanged edge two, and flanged edge three, wherein flanged edge one and flanged edge two are located at the two ends of the positioning plate, and flanged edge two is located between flanged edge one and flanged edge three.

9. A cell module as described in claim 1, characterized in that, Insulating foam is installed between adjacent cells of the same component.

10. A battery cell module as described in claim 1, characterized in that, Any three adjacent cells in the same component are called cell one, cell two, and cell three. The negative terminal of cell one is close to the positive terminal of cell two, and the negative terminal of cell two is close to the positive terminal of cell three. In the parallel direction of the cells, the cell at the first end of the component is used for external connection, and the cell at the first end of the component is used for external connection; the cell at the end of the first component and the cell at the end of the second component are connected in series, and the positive terminal of the cell at the end of the first component and the negative terminal of the cell at the end of the second component are close to each other, or the negative terminal of the cell at the end of the first component and the positive terminal of the cell at the end of the second component are close to each other. The polarity of the external electrode of component one is opposite to that of the external electrode of component two.

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