Battery module
By using supplementary reinforcing members and continuous V-shaped reinforcing structures in the battery module, the problems of irregular battery module structure and poor strength were solved, achieving an overall improvement in the strength of the battery module and cell consistency management, while reducing the cost of casing design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PYLON TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-24
AI Technical Summary
In existing battery modules, the overall structure is irregular, with empty space and poor strength due to the composition of multiple battery modules with different numbers of cells, and the shell needs to be redesigned, which increases costs.
Additional reinforcing components are used to fill the empty space, a continuous V-shaped reinforcing structure is set up, and straps are used for fixation. The lead-out connectors are lengthened to connect the battery cells, ensuring that the battery cells are closely arranged and the voltage difference is balanced.
It improves the overall strength and regularity of the battery module, reduces the investment in casing design, and enhances the consistency of the cell life cycle and the accuracy of the battery management system's detection.
Smart Images
Figure CN224164347U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery module. Background Technology
[0002] Currently, battery modules are composed of multiple battery modules, each containing the same number of cells. In this case, the total number of cells is even. When all the battery modules are arranged and assembled, the overall shape is a regular cuboid or cube, which meets the assembly requirements. However, for modules composed of multiple battery modules with different numbers of cells, the overall shape is no longer a regular cuboid or cube, but rather has some empty space. This structure leads to poor overall strength, and because of the irregular overall structure, the outer casing of the battery module needs to be redesigned, which increases costs. Utility Model Content
[0003] The purpose of this application is to provide a battery module that, to a certain extent, solves the technical problems existing in the prior art where modules composed of multiple battery modules with different numbers of cells have irregular overall structures. Compared with regular cuboid or cube structures, these modules have some empty space, resulting in poor overall strength. Furthermore, the outer casing of the battery module needs to be redesigned, which increases costs.
[0004] This application provides a battery module, including a plurality of battery modules arranged sequentially along a first preset direction, wherein a portion of the plurality of battery modules is a first battery module and another portion is a second battery module, wherein the first battery module includes a plurality of first cells, and the plurality of first cells are arranged sequentially along a second preset direction.
[0005] The second battery module includes a second battery cell and a supplementary reinforcing member, and the second battery cell and the supplementary reinforcing member are arranged along the second preset direction, and the sum of the number of the second battery cell and the supplementary reinforcing member is equal to the number of the first battery cell.
[0006] In the above technical solution, the supplementary reinforcing member is further described as having an internally hollow structure.
[0007] In any of the above technical solutions, the hollow area of the supplementary reinforcing member is further provided with reinforcing ribs.
[0008] In any of the above technical solutions, the number of reinforcing ribs is further multiplied.
[0009] In any of the above technical solutions, further, a plurality of the reinforcing ribs are arranged sequentially along the height direction of the supplementary reinforcing member to form a continuous V-shaped reinforcing structure.
[0010] In any of the above technical solutions, the second battery module further includes a strap, and the cell assembly and the supplementary reinforcing member are fixed by the strap, and the strap extending to the side of the supplementary reinforcing member is disposed corresponding to the vertex position of the V-shaped reinforcing structure.
[0011] In any of the above technical solutions, the shapes of the supplementary reinforcing member, the first battery cell, and the second battery cell are further adapted to each other.
[0012] In any of the above technical solutions, further, in each of the second battery modules, along the second preset direction, the supplementary reinforcing member is disposed at the first end of the overall structure in which the plurality of second cells are arranged.
[0013] In any of the above technical solutions, the battery module further includes a short lead-out bar, a long lead-out bar, and a short connecting bar; wherein, along the first preset direction, the output terminal of the second cell at the first end along the second preset direction in the first battery module is connected to the short lead-out bar;
[0014] In each of the battery modules, any two adjacent cells are electrically connected through the short connector, and two adjacent battery modules are electrically connected through the short connector; along the second preset direction, the output terminal of the first cell at the first end along the second preset direction in the last battery module is connected to the long lead-out board.
[0015] In any of the above technical solutions, both the short lead-out and the long lead-out extend to the outer side of the first battery module.
[0016] Compared with the prior art, the beneficial effects of this application are as follows:
[0017] This application includes a supplementary reinforcing member. When the number of second cells in the second battery module is different from the number of first cells in the first battery module, the supplementary reinforcing member acts as a dummy cell to fill the gap, ensuring the overall strength. Moreover, since the dummy cell is added, the regularity of the overall structure can be ensured, thus eliminating the need to redesign other supporting components of the battery module, such as the casing, which greatly reduces design investment.
[0018] Furthermore, the supplementary reinforcing member is placed at the end of the overall structure formed by the multiple second cells, i.e., the entire cell assembly. In other words, the supplementary reinforcing member does not penetrate into the interior of the cell assembly, thus ensuring that the multiple second cells are closely arranged and sequentially adjacent. In addition, since the existing short lead-out bus is changed to a long lead-out bus, i.e., the long lead-out bus in this application, it can be ensured that any two adjacent second cells can be connected through a short connecting bus. Compared with using a long bus between two cells, it can ensure that the voltage difference between cells is balanced and consistent, reduce the voltage difference between cells, ensure high consistency throughout the cell's life cycle, and improve the accuracy of the battery management system detection. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the battery module provided in an embodiment of this application;
[0021] Figure 2 A schematic diagram of the supplementary reinforcing member provided in the embodiments of this application;
[0022] Figure 3 Another structural schematic diagram of the supplementary reinforcing member provided in the embodiments of this application;
[0023] Figure 4 This is another structural schematic diagram of the battery module provided in an embodiment of this application;
[0024] Figure 5 Another schematic diagram of the battery module provided in the embodiments of this application;
[0025] Figure 6 Another schematic diagram of the battery module provided in the embodiments of this application;
[0026] Figure 7 Another schematic diagram of the battery module provided in the embodiments of this application;
[0027] Figure 8 This is an assembly diagram of the battery module provided in the embodiments of this application with existing short lead-out bars and long connecting bars.
[0028] Figure label:
[0029] 1-First battery module, 11-First cell, 2-Second battery module, 21-Second cell, 22-Supplementary reinforcing member, 221-Reinforcing rib, 3-Binding strap, 4-Short lead-out bar, 5-Long lead-out bar, 6-Short connecting bar, 7-End plate, a-First preset direction, b-Second preset direction, 4'-Short lead-out bar, 5'-Long connecting bar. Detailed Implementation
[0030] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0031] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0032] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] The following reference Figures 1 to 7 This application describes a battery module according to some embodiments.
[0036] See Figures 1 to 5As shown, an embodiment of this application provides a battery module, including multiple battery modules arranged sequentially along a first preset direction a, and a portion of the multiple battery modules is a first battery module 1, while another portion is a second battery module 2. The first battery module 1 includes multiple first cells 11, and the multiple first cells 11 are arranged sequentially along a second preset direction b.
[0037] The second battery module 2 includes a second battery cell 21 and a supplementary reinforcing member 22, and the second battery cell 21 and the supplementary reinforcing member 22 are arranged along a second preset direction b, and the sum of the number of the second battery cell 21 and the supplementary reinforcing member 22 is equal to the number of the first battery cell 11.
[0038] As can be seen from the structure described above, this application provides a supplementary reinforcing member 22. When the number of second cells 21 in the second battery module 2 is different from the number of first cells 11 in the first battery module 1, the supplementary reinforcing member 22 serves as a dummy cell to fill the gap, ensuring the overall strength. Moreover, since the dummy cell is added, the regularity of the overall structure can be ensured, thus eliminating the need to redesign other supporting components of the battery module, such as the casing, greatly reducing design investment.
[0039] Furthermore, preferably, the first preset direction a can be the horizontal X direction, and the second preset direction b can be the horizontal Y direction. Of course, it is not limited to this and can be selected according to actual needs.
[0040] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, the supplementary reinforcing member 22 has an internally hollow structure.
[0041] As can be seen from the structure described above, the supplementary reinforcing member 22 adopts a hollow structure, which is lightweight and contributes to lightweight design. Of course, it is not limited to this; the supplementary reinforcing member 22 can also be a solid structure, depending on the actual needs.
[0042] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, the hollow area of the supplementary reinforcing member 22 is provided with a reinforcing rib plate 221.
[0043] As can be seen from the structure described above, the internal reinforcing rib 221 of the supplementary reinforcing member 22 serves to increase strength.
[0044] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, there are multiple reinforcing ribs 221.
[0045] As can be seen from the structure described above, providing multiple reinforcing ribs 221 inside the supplementary reinforcing member 22 results in better reinforcement. Of course, this is not the only option; only one reinforcing rib 221 can be provided inside the supplementary reinforcing member 22, depending on the actual needs.
[0046] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, multiple reinforcing ribs 221 are arranged sequentially along the height direction of the supplementary reinforcing member 22 to form a continuous V-shaped reinforcing structure.
[0047] As can be seen from the structure described above, multiple reinforcing ribs 221 are arranged sequentially along the height direction. The distribution of multiple reinforcing ribs 221 is more uniform, which can increase the strength of the entire area inside the reinforcing member 22. Moreover, multiple reinforcing ribs 221 form a continuous V-shaped reinforcing structure. In other words, multiple reinforcing ribs 221 form an integrated continuous reinforcing structure, resulting in a better reinforcing effect.
[0048] It should be noted that multiple reinforcing ribs 221 are not limited to forming a continuous V-shaped reinforcing structure, but can also be arranged arbitrarily as needed.
[0049] In this embodiment, preferably, as follows: Figure 4 As shown, the second battery module 2 also includes a strap 3, and the cell assembly and the supplementary reinforcing member 22 are fixed by the strap 3, and the strap 3 extending to the side of the supplementary reinforcing member 22 is set to correspond to the vertex position of the V-shaped reinforcing structure.
[0050] As can be seen from the structure described above, the strap 3 serves to fix the battery cell assembly and supplement the reinforcing member 22, fixing them into a whole. Moreover, the apex of the V-shaped reinforcing structure is the intersection of the two reinforcing ribs 221. This position has higher strength and better load-bearing effect. Therefore, the aforementioned strap 3 is set exactly through the apex of the aforementioned V-shaped reinforcing structure, which can better withstand the tightening force of the strap 3 and prevent deformation and other problems from occurring.
[0051] It should be noted that the positional relationship between strap 3 and the V-shaped reinforcing structure is not limited to the above and can be selected according to actual needs.
[0052] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the shapes of the supplementary reinforcing member 22, the first battery cell 11, and the second battery cell 21 are compatible.
[0053] As can be seen from the structure described above, the first battery cell 11 and the second battery cell 21 are preferably designed as cuboid structures to meet the assembly and use requirements. Correspondingly, the supplementary reinforcing member 22 is also designed as a matching shape, that is, a hollow cuboid structure. In this way, the supplementary reinforcing member 22 can better fill the space left by the lack of the second battery cell 21, making the overall structure more coordinated, the shape more regular, and the spatial layout more reasonable.
[0054] Of course, as the shapes of the first battery cell 11 and the second battery cell 21 change, the supplementary reinforcing member 22 also needs to be adjusted accordingly. This is to ensure that the shapes of the supplementary reinforcing member 22, the first battery cell 11, and the second battery cell 21 are compatible, so as to better achieve the filling effect.
[0055] In this embodiment, preferably, as follows: Figure 1 and Figure 5 As shown, in each second battery module 2, along the second preset direction b, a supplementary reinforcing member 22 is disposed at the first end of the overall structure in which multiple second cells 21 are arranged.
[0056] Further, preferably, such as Figure 5 As shown, the battery module also includes a short lead-out bar 4, a long lead-out bar 5, and a short connecting bar 6; wherein, along the first preset direction a, the output terminal of the second cell 21 at the first end of the first battery module along the second preset direction b is connected to the short lead-out bar 4.
[0057] In each battery module, any two adjacent cells are electrically connected through a short connector 6. That is, any two adjacent first cells 11 in the first battery module 1 are electrically connected through the short connector 6, any two adjacent second cells 21 in the second battery module 2 are electrically connected through the short connector 6, and adjacent battery modules are electrically connected through a short connector. Along the second preset direction b, the output terminal of the first cell 11 at the first end along the second preset direction b in the last battery module is connected to the long lead-out line 5.
[0058] As can be seen from the structure described above, the supplementary reinforcing member 22 is placed at the end of the overall structure formed by the multiple second cells 21, i.e., the entire cell assembly. In other words, the supplementary reinforcing member 22 does not penetrate into the interior of the cell assembly, thus ensuring that the multiple second cells 21 are closely arranged and sequentially adjacent. Furthermore, since an existing short lead-out bar 4' (such as...) is... Figure 8 The lead-out bar (as shown) is changed to a long lead-out bar 5 in this application. This ensures that any two adjacent second cells 21 can be connected through a short connecting bar 6, compared to using a long connecting bar 5' between two cells (as shown). Figure 8As shown, this can ensure a balanced and consistent voltage difference between cells, reduce the voltage difference between cells, ensure high consistency throughout the cell's lifespan, and improve the accuracy of the battery management system's detection.
[0059] It should be noted that in this embodiment, the number of the first battery module 1 and the second battery module 2 is one. However, this is not the only possibility; the number of second battery modules 2 can also be multiple. When there are multiple second battery modules 2, the supplementary reinforcing members 22 in each second battery module 2 are located at the same end, i.e., the first end, rather than at different ends. Furthermore, when there are multiple supplementary reinforcing members 22 in the second battery module 2, these multiple supplementary reinforcing members 22 are arranged sequentially along the second preset direction b at the first end. Similarly, the number of first battery modules 1 is not limited to one; it can also be multiple. Examples are given below: Figure 6 As shown, the number of first battery modules 1 is one, the number of second battery modules 2 is three, and the second cell 21, supplementary reinforcing member 22, long lead-out bar 5, short lead-out bar 4, and short connecting bar 6 can be arranged as shown in the figure; Figure 7 As shown, there are two first battery modules 1 and two second battery modules 2. The second battery cell 21, supplementary reinforcing member 22, long lead-out bar 5, short lead-out bar 4 and short connecting bar 6 can be set as shown in the figure.
[0060] In addition, it should be noted that if the short connecting row 6, short lead row 4 and long lead row 5 are not arranged according to the above-mentioned structure, the position of the supplementary reinforcing member 22 can also be designed according to actual needs, for example, it can also be inserted into the inside of the cell assembly, etc.
[0061] In addition, it should be noted that the second battery module 2 also includes two end plates 7, which are respectively disposed at both ends of the structure formed by the cell assembly and the supplementary reinforcing member 22. Correspondingly, the first battery module 1 also includes end plates 7 and binding straps 3 and other structures, which will not be described in detail here.
[0062] In this embodiment, preferably, as follows: Figure 5 As shown, both the short lead-out bar 4 and the long lead-out bar 5 extend to the outer side of the first battery module.
[0063] As can be seen from the structure described above, extending the short lead 4 and the long lead 5 to the outer side of the first battery module can make full use of the space on the side of the battery module, thereby facilitating electrical connection with the battery management system on the side. Moreover, it avoids the problem of structural protrusion and unreasonable layout caused by designing the above structure on the top or end of the battery module.
[0064] Furthermore, preferably, the short lead-out row 4 has a Z-shaped structure. Of course, it is not limited to this; it can also be designed according to actual needs, such as using a straight structure or other types of bent structures.
[0065] Furthermore, preferably, the long lead-out row 5 has a Z-shaped structure. Of course, it is not limited to this; it can also be designed according to actual needs, such as using a straight structure or other types of bent structures.
[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A battery module, characterized in that, It includes multiple battery modules arranged sequentially along a first preset direction, and a portion of the multiple battery modules is a first battery module, while another portion is a second battery module. The first battery module includes multiple first cells, and the multiple first cells are arranged sequentially along a second preset direction. The second battery module includes a second battery cell and a supplementary reinforcing member, and the second battery cell and the supplementary reinforcing member are arranged along the second preset direction, and the sum of the number of the second battery cell and the supplementary reinforcing member is equal to the number of the first battery cell.
2. The battery module according to claim 1, characterized in that, The supplementary reinforcing member has an internally hollow structure.
3. The battery module according to claim 2, characterized in that, The hollow area of the supplementary reinforcing member is provided with reinforcing ribs.
4. The battery module according to claim 3, characterized in that, The number of the reinforcing ribs is multiple.
5. The battery module according to claim 4, characterized in that, Multiple reinforcing ribs are arranged sequentially along the height direction of the supplementary reinforcing member to form a continuous V-shaped reinforcing structure.
6. The battery module according to claim 5, characterized in that, The second battery module also includes straps, and a plurality of the second cells are fixed to the supplementary reinforcing member via the straps, and the straps extending to the side of the supplementary reinforcing member are positioned corresponding to the apex of the V-shaped reinforcing structure.
7. The battery module according to claim 1, characterized in that, The shapes of the supplementary reinforcing member, the first battery cell, and the second battery cell are compatible.
8. The battery module according to any one of claims 1 to 7, characterized in that, In each of the second battery modules, along the second preset direction, the supplementary reinforcing member is disposed at the first end of the overall structure in which the plurality of second cells are arranged.
9. The battery module according to claim 8, characterized in that, The battery module further includes a short lead-out bar, a long lead-out bar, and a short connecting bar; wherein, along the first preset direction, the output terminal of the second cell at the first end along the second preset direction in the first battery module is connected to the short lead-out bar; In each of the battery modules, any two adjacent cells are electrically connected through the short connector, and two adjacent battery modules are electrically connected through the short connector; along the second preset direction, the output terminal of the first cell at the first end along the second preset direction in the last battery module is connected to the long lead-out board.
10. The battery module according to claim 9, characterized in that, Both the short lead-out and the long lead-out extend to the outer side of the first battery module.