Battery module, battery pack and electric device
The one-piece output pole base and partition design solves the problem of traditional battery modules having many parts and complex assembly, thus simplifying the assembly of battery modules and improving production efficiency.
Patent Information
- Application Number
- CN202422393649.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Traditional battery modules have too many types of parts, a complicated assembly process, and pose a risk of electric shock or short circuit.
The output pole base and partition are formed in one piece, and the electrical connection between the battery cell assembly and other electrical structures is achieved through connectors. The end plate and the battery cell assembly are isolated by the partition to simplify the assembly process.
Reduce the types of assembly parts, improve structural stability, simplify the assembly process, and improve production efficiency and product yield.
Smart Images

Figure CN223309099U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of battery modules, and in particular to a battery module, a battery pack, and an electrical device. Background Art
[0002] A battery module usually includes a battery cell, an aluminum end plate, an output pole base and an insulating partition. In a traditional battery module, an insulating partition is usually set between the battery cell and the aluminum end plate to avoid the risk of electric shock or short circuit caused by contact between the aluminum end plate and the battery cell. The output pole base is then installed on the aluminum end plate to achieve electrical connection with other battery modules through the output pole base. This will result in too many types of parts in the battery module and a complicated assembly process. Utility Model Content
[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a battery module that can simplify the assembly process of the battery module.
[0004] The present application also provides a battery pack.
[0005] The present application also provides an electrical device.
[0006] To achieve the above objectives, the technical solutions adopted in this application are as follows:
[0007] According to the battery module of the first aspect embodiment of the present application, it includes: a cell assembly, the cell assembly includes an output row; an end plate; a partition, the partition is arranged between the cell group and the end plate, the partition includes a partition body, the end plate is connected to one side of the partition body, and the cell group is connected to the other side of the partition body; an output pole base, the output pole base includes a base body and a connecting piece, the base body and the partition body are integrally formed, and the output row is connected to the base body through the connecting piece.
[0008] The battery module of this application has the following advantages:
[0009] In the battery module of the present application, the output row of the battery cell assembly and the electrical connection ends of other electrical structures can be connected to the base body at the same time through connectors, so as to realize the electrical connection between the battery module and other electrical structures. At the same time, the electrical connection inside the battery cell assembly can be realized through the end plate and the structural stability of the battery module of the present application can be improved. Furthermore, the end plate and the battery cell assembly can be isolated by a partition to avoid the risk of electric shock or short circuit caused by contact between the end plate and the battery cell assembly. Since the base body and the partition body of the output pole base are integrally formed, when assembling the battery module of the present application, the types of assembled parts can be reduced. It is only necessary to install the partition between the end plate and the battery cell assembly, and connect the output row to the base body through the connector to realize the assembly of the battery module. At the same time, it can also realize the electrical connection between the battery module and other electrical structures. In this way, the battery module of the present application can simplify the assembly process and improve production efficiency and product yield.
[0010] According to the battery module of the embodiment of the first aspect of the present application, the battery module has a third direction, the battery cell assembly also includes a battery cell group, the output row is connected to the battery cell group and is arranged at one end of the battery cell group along the third direction, and the output pole base is arranged at one end of the partition body along the third direction close to the output row.
[0011] According to the battery module of the embodiment of the first aspect of the present application, the battery module also has a second direction, the second direction intersects with the third direction, the partition has two output pole bases, the two output pole bases are arranged at intervals along the second direction, one of the output pole bases is connected to the output row or the other output pole base is connected to the output row.
[0012] According to the battery module of the embodiment of the first aspect of the present application, the battery module has a first direction, a second direction and a third direction, the first direction, the second direction and the third direction intersect with each other, the partition also includes a plurality of limiting parts, each of the limiting parts is connected to the partition body, and at least one of the limiting parts and the base body are respectively arranged at the two ends of the partition body along the third direction, and at least one limiting part is provided at both ends of the partition body along the second direction, and each of the limiting parts and the base body protrudes from the same side of the partition body along the first direction to define a limiting space, and the end plate is arranged in the limiting space.
[0013] According to the battery module of the first aspect embodiment of the present application, the partition also includes a positioning portion, which is connected to the partition body and protrudes from the partition body along the first direction toward the side close to the limiting space, and the positioning portion is located in the limiting space, the end plate is provided with a positioning hole, and the positioning portion is passed through the positioning hole.
[0014] According to the battery module of the first embodiment of the present application, there are multiple positioning parts and positioning holes, multiple positioning parts are arranged at intervals in the limiting space, and each positioning part is passed through one positioning hole.
[0015] According to the battery module of the embodiment of the first aspect of the present application, the partition also includes a plurality of covering portions, each of the covering portions is connected to the partition body, and each protrudes from the partition body along the first direction toward away from the limiting space, and at least one covering portion is provided at both ends of the partition body along the second direction, the covering portion located at one end of the partition body along the second direction covers the outside of one side of the battery cell group along the second direction, and the covering portion located at the other end of the partition body along the second direction covers the outside of the other side of the battery cell group along the second direction.
[0016] According to the battery module of the embodiment of the first aspect of the present application, the battery module has a first direction, and the width of the partition body along the first direction is L, which satisfies: 1mm≤L≤4mm.
[0017] According to the battery module of the first embodiment of the present application, the partition is made of plastic injection molding.
[0018] The battery pack according to the second embodiment of the present application includes: the battery module as described above.
[0019] The battery pack of this application has the following advantages:
[0020] In the battery pack of the present application, since the battery module of the present application can simplify the assembly process, the assembly process of the battery pack of the present application can be simplified, thereby improving the production efficiency and product yield of the battery pack.
[0021] According to the third embodiment of the present application, the electrical device includes: the battery pack as described above.
[0022] The electrical device of the present application has the following advantages:
[0023] In the electric device of the present application, since the battery pack of the present application has higher production efficiency and better product yield, the production efficiency and product yield of the electric device of the present application can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0025] Figure 1 A schematic diagram of the exploded structure of the battery module in this application is shown;
[0026] Figure 2 Shown Figure 1 Schematic diagram of the enlarged structure at A in the middle;
[0027] Figure 3 Shows the structure of the partition in this application Figure 1 ;
[0028] Figure 4 Shows the structure of the partition in this application Figure 2 .
[0029] Description of main component symbols:
[0030] 100-battery cell assembly; 110-output row; 120-battery cell group;
[0031] 200-end plate; 210-positioning hole;
[0032] 300-partition; 310-partition body; 320-limiting portion; 330-limiting space; 340-positioning portion; 350-covering portion;
[0033] 400-output pole base; 410-base body; 420-connector;
[0034] x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION
[0035] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.
[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0038] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.
[0039] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0040] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, the battery module involved in the embodiment of the present application includes: a battery cell assembly 100, an end plate 200, a partition 300 and an output pole base 400.
[0041] Specifically, the battery cell assembly 100 includes an output row 110; the partition 300 is arranged between the battery cell group 120 and the end plate 200, the partition 300 includes a partition body 310, the end plate 200 is connected to one side of the partition body 310, and the battery cell group 120 is connected to the other side of the partition body 310; the output pole base 400 includes a base body 410 and a connecting piece 420, the base body 410 and the partition body 310 are integrally molded, and the output row 110 is connected to the base body 410 through the connecting piece 420.
[0042] In the battery module of the present application, the output row 110 of the battery cell assembly 100 and the electrical connection end of other electrical structures can be connected to the base body 410 through the connector 420 at the same time, so as to realize the electrical connection between the battery module and other electrical structures. At the same time, the electrical connection inside the battery cell assembly 100 can be realized through the end plate 200, and the structural stability of the battery module of the present application can be improved. Furthermore, the end plate 200 can be isolated from the battery cell assembly 100 by the partition 300 to avoid electric shock or short circuit caused by contact between the end plate 200 and the battery cell assembly 100. Risk, since the base body (410) of the output pole base 400 and the partition body 310 are integrally formed, the types of assembled parts can be reduced when assembling the battery module of the present application. It is only necessary to install the partition 300 between the end plate 200 and the battery cell assembly 100, and connect the output row 110 to the base body 410 through the connector 420 to realize the assembly of the battery module. At the same time, the electrical connection between the battery module and other electrical structures can also be realized. In this way, the battery module of the present application can simplify the assembly process and improve production efficiency and product yield.
[0043] Specifically, in this embodiment, the connector 420 is a copper nut, which can connect the output row 110 of the battery cell assembly 100 and the electrical connection ends of other electrical structures to the base body 410 through the copper nut at the same time, thereby realizing the electrical connection between the battery module and other electrical structures.
[0044] Reference Figure 2 As shown, the battery module has a third direction z, the battery cell assembly 100 also includes a battery cell group 120, the output row 110 is connected to the battery cell group 120, and is arranged at one end of the battery cell group 120 along the third direction z, and the output pole base 400 is arranged at one end of the partition body 310 along the third direction z close to the output row 110.
[0045] It should be noted that the third direction z is Figure 1 The direction indicated by z.
[0046] In this embodiment, since the output row 110 is arranged at one end of the battery cell group 120 along the third direction z, and the output pole base 400 is arranged at one end of the partition body 310 along the third direction z close to the output row 110, the length of the output row 110 can be shortened, which facilitates connecting the output row 110 to the output pole base 400, improves the stability of the connection structure between the output row 110 and the output pole base 400, and facilitates the assembly of the battery module of the present application.
[0047] Continue to refer to Figure 2 As shown, the battery module also has a second direction y, which intersects with the third direction z. The partition 300 has two output pole bases 400, and the two output pole bases 400 are arranged at intervals along the second direction y, wherein one of the output pole bases 400 is connected to the output row 110 or the other output pole base 400 is connected to the output row 110.
[0048] It should be noted that the second direction y is Figure 1 The direction indicated by y.
[0049] In this embodiment, since the two output pole bases 400 are arranged at intervals along the second direction y, and one of the output pole bases 400 is connected to the output row 110 or the other output pole base 400 is connected to the output row 110, when the output row 110 is located at different positions, the output row 110 can be connected to different output pole bases 400, thereby improving the convenience of installing the output row 110, so that the output pole base 400 can adapt to the output row 110 at different positions, and there is no need to set up additional components that are aligned with the output row 110, thereby reducing the types of parts and improving the convenience of installation.
[0050] Reference Figure 3 As shown, the battery module has a first direction x, a second direction y and a third direction z, and the first direction x, the second direction y and the third direction z intersect with each other in pairs. The partition 300 also includes a plurality of limiting portions 320, each limiting portion 320 is connected to the partition body 310, and at least one limiting portion 320 and the base body 410 are respectively arranged at the two ends of the partition body 310 along the third direction z, and at least one limiting portion 320 is provided at both ends of the partition body 310 along the second direction y. Each limiting portion 320 and the base body 410 protrude from the same side of the partition body 310 along the first direction x to define a limiting space 330, and the end plate 200 is arranged in the limiting space 330.
[0051] It should be noted that the first direction x is Figure 1 The direction pointed by x.
[0052] Specifically, in this embodiment, the first direction x, the second direction y, and the third direction z are perpendicular to each other.
[0053] In this embodiment, the end plate 200 can be set in the limiting space 330, so that the installation position of the end plate 200 can be limited by the base body 410 and the multiple limiting parts 320, thereby facilitating the positioning of the end plate 200 during the installation process and facilitating the installation of the end plate 200. At the same time, the movement of the end plate 200 can be limited by the base body 410 and the multiple limiting parts 320, thereby improving the stability of the connection relationship between the end plate 200 and the partition 300, and further improving the structural stability of the battery module of the present application.
[0054] Reference Figure 2 As shown, the partition 300 also includes a positioning portion 340, which is connected to the partition body 310 and protrudes from the partition body 310 along the first direction x toward the side close to the limiting space 330, and the positioning portion 340 is located in the limiting space 330. The end plate 200 is provided with a positioning hole 210, and the positioning portion 340 is passed through the positioning hole 210.
[0055] In this embodiment, when the end plate 200 is arranged in the limited space 330, the positioning portion 340 of the insulating end plate 200 can be passed through the positioning hole 210 of the end plate 200, so as to position the installation of the end plate 200, so that the end plate 200 can be installed at the specified position, thereby improving the installation convenience and efficiency of the end plate 200. Furthermore, the stability of the connection relationship between the end plate 200 and the partition 300 can be improved by cooperating with the positioning portion 340 and the positioning hole 210, thereby further improving the structural stability of the battery module of the present application.
[0056] Continue to refer to Figure 2 As shown, there are multiple positioning portions 340 and positioning holes 210 , and the multiple positioning portions 340 are arranged at intervals in the limiting space 330 , and each positioning portion 340 is passed through a positioning hole 210 .
[0057] In this embodiment, since the multiple positioning parts 340 are arranged at intervals in the limiting space 330, a positioning line or positioning surface can be formed between the multiple positioning parts 340, so that the end plate 200 can be positioned more accurately through the positioning line or positioning surface. When each positioning part 340 is passed through a positioning hole 210, the installation position of the end plate 200 is determined, and the end plate 200 only needs to be fixed subsequently. At the same time, the multiple positioning parts 340 can play a limiting role on the end plate 200, so that the end plate 200 can be initially fixed. In the process of fixing the end plate 200, there is no need to hold the end plate 200 by hand, thereby improving the convenience of fixing the end plate 200. Furthermore, the multiple positioning parts 340 can also further improve the stability of the connection relationship between the end plate 200 and the partition 300.
[0058] Reference Figure 4 As shown, the partition 300 also includes a plurality of covering portions 350, each covering portion 350 is connected to the partition body 310, and each protrudes from the partition body 310 along the first direction x in a direction away from the limiting space 330, and at least one covering portion 350 is provided at both ends of the partition body 310 along the second direction y, the covering portion 350 located at one end of the partition body 310 along the second direction y covers one side of the battery cell group 120 along the second direction y, and the covering portion 350 located at the other end of the partition body 310 along the second direction y covers the other side of the battery cell group 120 along the second direction y.
[0059] Specifically, in this embodiment, at both ends of the separator body 310 along the second direction y, any covering portion 350 is a flange of the separator body 310 bent toward the cell group 120 along the first direction x, so as to cover the cell group 120 through the flange.
[0060] In this embodiment, since the covering portion 350 located at one end of the partition body 310 along the second direction y covers the outside of one side of the battery cell group 120 along the second direction y, and the covering portion 350 located at the other end of the partition body 310 along the second direction y covers the outside of the other side of the battery cell group 120 along the second direction y, the covering portion 350 can cover the end connected to the partition 300, thereby improving the insulating effect of the partition 300 on the end plate 200 and further reducing the possibility of electric shock to the end plate 200.
[0061] Continue to refer to Figure 4 As shown, the battery module has a first direction x, and the width of the separator body 310 along the first direction x is L, which satisfies: 1 mm ≤ L ≤ 4 mm.
[0062] Specifically, in this embodiment, L can be 1 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, etc.
[0063] It should be noted that, in a battery module, the heat generated by the battery module is usually cooled and dissipated through a liquid cooling plate. In addition to having an insulating isolation function, the partition 300 can also play a certain thermal insulation role. The partition 300 can thermally isolate the battery cell assembly 100 to prevent the heat generated by the electrical components from being transferred to the end plate 200 or other structures, thereby reducing the power consumption of the liquid cooling plate.
[0064] In this embodiment, if the width L of the partition body 310 along the first direction x satisfies: L≤1mm, the thickness of the partition body 310 will be too thin, so that the insulation effect and thermal insulation effect of the partition body 310 are relatively low and cannot meet expectations. If the width L of the partition body 310 along the first direction x satisfies: L≥4mm, the thickness of the partition body 310 will be too thick, so that the space occupied by the partition body 310 in the battery module is too large, further resulting in a decrease in the energy density in the battery module, or an increase in the size of the battery module and a decrease in the energy density of the battery pack. When the width L of the partition body 310 along the first direction x satisfies: 1mm≤L≤4mm, the partition body 310 can have better insulation and thermal insulation effects, and the size of the partition body 310 can also be reduced, reducing the impact on the energy density of the battery module.
[0065] Specifically, the partition 300 is made of plastic injection molding.
[0066] In this embodiment, since the partition 300 is made of plastic injection molding, the partition 300 can have an insulating and heat-preserving effect. At the same time, the partition body 310, the base body 410, the positioning portion 340 and the covering portion 350 can be made into an integral part by injection molding. In this way, the types of parts of this application can be reduced, the difficulty of assembly can be reduced, and at the same time, the assembly errors generated during the parts assembly process can be reduced, and the product yield of the battery module can be improved. Furthermore, the connection structure stability between the partition body 310 and the base body 410, the positioning portion 340 and the covering portion 350 can be improved, thereby improving the structural strength of the base body 410, the positioning portion 340 and the covering portion 350, thereby improving the structural strength of the battery module of this application.
[0067] The battery pack involved in the embodiment of the present application includes: the above-mentioned battery module.
[0068] In the battery pack of the present application, since the battery module of the present application can simplify the assembly process, the assembly process of the battery pack of the present application can be simplified, thereby improving the production efficiency and product yield of the battery pack.
[0069] Specifically, the battery pack of the present application includes multiple battery modules, and the multiple battery modules are connected in series or in parallel. When any two battery modules are electrically connected, the output rows 110 of the two battery modules are usually connected to the same base body 410 at the same time through the connector 420, so as to achieve electrical connection of any two battery modules. In this process, the output row 110 for electrical connection in the battery module can be any one of the two output rows 110 in the battery cell assembly 100 that are spaced apart along the second direction y. The specific selection depends on the arrangement of the structural spaces in the battery pack and the series and parallel connection between the battery modules. Since two output pole bases 400 spaced apart along the second direction y are provided on the partition 300, no matter which output row 110 is selected, the output row 110 can be connected to the corresponding output pole base 400, so as to facilitate the electrical connection of any two battery modules.
[0070] The electrical device involved in the embodiment of the present application includes: the above-mentioned battery pack.
[0071] In the electric device of the present application, since the battery pack of the present application has higher production efficiency and better product yield, the production efficiency and product yield of the electric device of the present application can be improved.
[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A battery module, characterized in that: include: A battery cell assembly (100), the battery cell assembly (100) comprising an output row (110); End plate (200); a partition (300), the partition (300) being arranged between the battery cell group (120) and the end plate (200), the partition (300) comprising a partition body (310), the end plate (200) being connected to one side of the partition body (310), and the battery cell group (120) being connected to the other side of the partition body (310); The output pole base (400) comprises a base body (410) and a connecting piece (420); the base body (410) and the partition body (310) are integrally formed; and the output row (110) is connected to the base body (410) via the connecting piece (420).
2. The battery module according to claim 1, wherein: The battery module has a third direction (z), the battery cell assembly (100) further includes a battery cell group (120), the output row (110) is connected to the battery cell group (120) and is arranged at one end of the battery cell group (120) along the third direction (z), and the output pole base (400) is arranged at one end of the partition body (310) along the third direction (z) close to the output row (110).
3. The battery module according to claim 2, characterized in that: The battery module further has a second direction (y), and the second direction (y) intersects with the third direction (z). The partition (300) has two output pole bases (400), and the two output pole bases (400) are arranged at intervals along the second direction (y), and one of the output pole bases (400) is connected to the output row (110) or the other output pole base (400) is connected to the output row (110).
4. The battery module according to claim 1, wherein: The battery module has a first direction (x), a second direction (y) and a third direction (z), and the first direction (x), the second direction (y) and the third direction (z) intersect with each other in pairs. The partition (300) also includes a plurality of limiting portions (320), each of which is connected to the partition body (310), and at least one limiting portion (320) and the base body (410) are respectively arranged at both ends of the partition body (310) along the third direction (z). At least one limiting portion (320) is provided at both ends of the partition body (310) along the second direction (y), and each limiting portion (320) and the base body (410) protrude from the same side of the partition body (310) along the first direction (x) to define a limiting space (330), and the end plate (200) is arranged in the limiting space (330).
5. The battery module according to claim 4, characterized in that: The partition (300) further includes a positioning portion (340), which is connected to the partition body (310) and protrudes from the partition body (310) along a first direction (x) toward a side close to the limiting space (330), and the positioning portion (340) is located in the limiting space (330). The end plate (200) is provided with a positioning hole (210), and the positioning portion (340) is passed through the positioning hole (210).
6. The battery module according to claim 5, characterized in that: There are a plurality of positioning portions (340) and positioning holes (210), and a plurality of positioning portions (340) are arranged at intervals in the limiting space (330), and each positioning portion (340) is passed through one positioning hole (210).
7. The battery module according to claim 4, characterized in that: The partition (300) further includes a plurality of covering portions (350), each of the covering portions (350) being connected to the partition body (310) and protruding from the partition body (310) along the first direction (x) in a direction away from the limiting space (330), and at least one covering portion (350) is provided at both ends of the partition body (310) along the second direction (y), the covering portion (350) located at one end of the partition body (310) along the second direction (y) covering one side of the battery cell group (120) along the second direction (y), and the covering portion (350) located at the other end of the partition body (310) along the second direction (y) covering the other side of the battery cell group (120) along the second direction (y).
8. The battery module according to claim 1, wherein: The battery module has a first direction (x), and the width of the partition body (310) along the first direction (x) is L, satisfying: 1mm≤L≤4mm.
9. The battery module according to claim 1, wherein: The partition (300) is made of plastic injection molding.
10. A battery pack, characterized in that: include: The battery module according to any one of claims 1 to 9.
11. An electrical device, characterized in that: include: The battery pack as claimed in claim 10.