Battery module and battery box

Abstract

The application provides a battery module and a battery box. The battery module comprises a battery cell assembly, the battery cell assembly comprising a plurality of battery cell bodies, the plurality of battery cell bodies being arranged at intervals along the length direction of the battery module; a busbar arranged above the battery cell assembly and electrically connected with the battery cell assembly, the busbar being provided with a limiting hole; and a spacer arranged between two adjacent battery cell bodies along the length direction of the battery module, the spacer being provided with a limiting column, the limiting column extending into the limiting hole to connect the spacer and the busbar. The application simplifies the assembly process, improves the production efficiency, and helps to ensure the stable electrical connection between the battery cell assembly and the busbar.

Description

Technical Field

[0001] This application relates to a battery module and battery box, belonging to the field of new energy battery technology. Background Technology

[0002] In recent years, advancements in materials science and nanotechnology have provided unprecedented impetus for the development and application of new energy technologies and products. Lithium-ion batteries, as a mature new energy source, are gradually gaining acceptance due to their high energy density, high power density, and low risk.

[0003] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: the wiring harness assembly and busbar of the battery module usually need to be fixed with a tray, making the tray an essential component of the wiring harness module. Furthermore, the nickel sheet of the wiring harness assembly needs to be installed and welded to the busbar one-to-one at a specific work station, resulting in low production efficiency and hindering mass production.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a battery module and battery box that simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the battery cell assembly and the busbar.

[0006] This application provides a battery module, including:

[0007] A battery cell assembly, comprising multiple battery cell bodies, which are spaced apart along the length of the battery module.

[0008] The busbar is located above the battery cell assembly and is electrically connected to the battery cell assembly. The busbar is provided with a limiting hole.

[0009] The separator is located between two adjacent battery cells along the length of the battery module. The separator has a limiting post that extends into the limiting hole to connect the separator and the busbar.

[0010] The beneficial effects of this application are: by cooperating with the limiting post on the separator and the upper limiting hole on the busbar, precise positioning and fixation of the busbar are achieved, effectively preventing displacement or loosening of the busbar under vibration or impact, and improving the mechanical stability and reliability of the battery module. At the same time, this structure simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the cell assembly and the busbar, reducing the risk of poor contact.

[0011] In some alternative implementations, the limiting post is located at the top of the partition.

[0012] It should be noted that by setting the limiting post on the top of the partition, the busbar is precisely limited and fixed, which effectively prevents misalignment and loosening during use, and improves the convenience of busbar assembly, structural stability and reliability of use.

[0013] In some alternative implementations, an opening is formed in the center of the spacer.

[0014] It should be noted that by opening an opening in the middle of the separator, a dedicated buffer space is provided for the expansion of the cell body, which effectively releases the internal mechanical stress generated during the cell cycle, avoids safety hazards such as short circuits and shell deformation caused by excessive compression, and at the same time helps to stabilize the electrode interface, delay battery performance degradation, and significantly improve battery safety and cycle life.

[0015] In some alternative implementations, the battery module further includes a wiring harness assembly electrically connected to the busbar, the wiring harness assembly including cables;

[0016] The partition has a mounting groove, and the cable is located inside the mounting groove.

[0017] It should be noted that the wiring harness assembly is directly fixed on the partition plate, eliminating the need for traditional tray parts.

[0018] In some alternative implementations, the battery module also includes a bonding element;

[0019] The spacer has fixing holes, through which the fastener passes to secure the cable in the mounting slot.

[0020] It should be noted that by selecting different lengths or elasticity of the 'binding clips', cables of different diameters can be adapted and a matching clamping force can be provided, which can secure the cable firmly without damaging it.

[0021] In some alternative implementations, the wire harness assembly also includes a nickel sheet;

[0022] A slot is provided on the busbar, and a nickel strip is inserted into the slot to make the nickel strip electrically connected to the busbar.

[0023] It should be noted that this configuration makes the electrical connection between the nickel plate and the busbar more stable.

[0024] In some alternative embodiments, the nickel sheet has a connecting portion and a snap-fit ​​portion connected together;

[0025] The snap-fit ​​part is located inside the snap-fit ​​slot, and the connecting part is connected to the side of the busbar.

[0026] It should be noted that the snap-fit ​​part itself has a certain contact area within the slot that can conduct electricity, while the connecting part forms another independent and larger conductive channel with the side of the busbar.

[0027] In some alternative implementations, there are at least two connecting portions, with at least two connecting portions located on both sides of the snap-fit ​​portion.

[0028] It should be noted that the two symmetrical connections ensure that the force exerted by the nickel plate on the busbar is balanced. When current flows from the busbar to the nickel plate, there are also two completely symmetrical paths.

[0029] In some alternative implementations, the battery module also includes at least two end plates;

[0030] Along the length of the battery module, at least two end plates are located on opposite sides of the cell assembly.

[0031] It should be noted that at least two end plates are respectively installed at the openings on opposite sides of the battery cell assembly. The main function of the end plates is to fix and support the battery cell assembly, ensure its stability, and provide additional mechanical protection.

[0032] In addition, this application also provides a battery box, including a box body and the aforementioned battery module;

[0033] The battery module is located inside the casing.

[0034] The battery module and battery box provided in this application include a battery box comprising a body and the aforementioned battery module; the battery module is disposed within the box; the battery module includes a cell assembly, the cell assembly comprising multiple cell bodies, the multiple cell bodies being spaced apart along the length direction of the battery module; a busbar, disposed above the cell assembly and electrically connected to the cell assembly, the busbar having a limiting hole; and a separator, located along the length direction of the battery module between two adjacent cell bodies, the separator having a limiting post extending into the limiting hole to connect the separator and the busbar.

[0035] By cooperating with the limiting posts on the separator and the upper limit holes on the busbar, precise positioning and fixation of the busbar are achieved, effectively preventing displacement or loosening of the busbar under vibration or impact, and improving the mechanical stability and reliability of the battery module. At the same time, this structure simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the cell assembly and the busbar, reducing the risk of poor contact. Attached Figure Description

[0036] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0037] Figure 1 This is a schematic diagram of the battery module structure according to an embodiment of this application;

[0038] Figure 2 for Figure 1 A magnified view of a portion of point I in the middle;

[0039] Figure 3 This is an exploded view of the battery module according to an embodiment of this application;

[0040] Figure 4 This is a partial structural diagram of the battery module according to an embodiment of this application;

[0041] Figure 5 for Figure 4 A magnified view of a section at point II;

[0042] Figure 6 This is a schematic diagram of the structure of the separator in the battery module according to an embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the wiring harness assembly in the battery module according to an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the busbar structure in the battery module of this application embodiment.

[0045] Figure label:

[0046] 100-Battery Module;

[0047] 110 - Battery cell assembly;

[0048] 111 - Cell body;

[0049] 120-bus;

[0050] 121 - Limiting hole;

[0051] 122 - Card slot;

[0052] 130-septum;

[0053] 131 - Limiting post;

[0054] 132 - Opening;

[0055] 133 - Mounting slot;

[0056] 134 - Fixing hole;

[0057] 140 - Wire harness assembly;

[0058] 141 - Cable;

[0059] 142-Nickel sheet;

[0060] 1421 - Connecting part;

[0061] 1422 - Connecting part;

[0062] 150-Binding components;

[0063] 160-End plate. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0065] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0066] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: the wiring harness assembly and busbar of the battery module usually need to be fixed with a tray, making the tray an essential component of the wiring harness module. Furthermore, the nickel sheet of the wiring harness assembly needs to be installed and welded to the busbar one-to-one at a specific work station, resulting in low production efficiency and hindering mass production.

[0069] The battery module proposed in this application achieves precise positioning and fixation of the busbar through the cooperation of the limiting post on the separator and the upper limiting hole on the busbar. This effectively prevents the busbar from shifting or loosening under vibration or impact, thus improving the mechanical stability and reliability of the battery module. At the same time, this structure simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the cell assembly and the busbar, reducing the risk of poor contact.

[0070] The battery module provided in this application will be described in detail below with reference to specific embodiments.

[0071] Figure 1 This is a schematic diagram of the battery module structure according to an embodiment of this application. Figure 2 for Figure 1 A magnified view of a portion of point I in the middle. Figure 3 This is an exploded view of the battery module according to an embodiment of this application. Figure 4 This is a partial structural diagram of the battery module according to an embodiment of this application. Figure 5 for Figure 4 A magnified view of a portion of section II. Figure 6 This is a schematic diagram of the structure of the separator in the battery module according to an embodiment of this application.

[0072] like Figures 1 to 6 As shown in the figure, this application embodiment proposes a battery module 100, including:

[0073] The battery cell assembly 110 includes a plurality of battery cell bodies 111, which are spaced apart along the length of the battery module 100.

[0074] Busbar 120 is located above battery cell assembly 110 and is electrically connected to battery cell assembly 110. Busbar 120 is provided with limiting hole 121.

[0075] The separator 130 is located between two adjacent cell bodies 111 along the length of the battery module 100. The separator 130 is provided with a limiting post 131, which extends into the limiting hole 121 so that the separator 130 and the busbar 120 are connected.

[0076] It should be noted that X represents the length direction of battery module 100.

[0077] Understandably, the spacing can provide a buffer space for the slight expansion of the cell body 111 during charging and discharging, reducing the risk of structural damage caused by expansion and compression.

[0078] It should be noted that the cell body 111 is the smallest charging and discharging unit. The cell body 111 has a positive electrode, a negative electrode and a separator disposed between the two, and the cell is formed by winding or stacking.

[0079] The positive electrode sheet includes a positive current collector and a positive active material layer, which can be one or two layers; that is, the positive active material layer is located on one side of the positive current collector, or the positive active material layer is located on opposite sides of the positive current collector.

[0080] For example, the positive current collector can be made of metal materials such as aluminum foil, nickel foil, or stainless steel, or a composite foil formed by combining metal and insulating materials.

[0081] For example, the positive electrode active material layer includes a positive electrode active material, a conductive agent, a binder, etc., and the positive electrode active material includes one or more lithium-containing positive electrode active materials such as lithium iron phosphate, ternary materials containing nickel, cobalt, and manganese, and lithium manganese iron phosphate.

[0082] Similarly, the negative electrode sheet includes a negative current collector and a negative active material layer, which can be one or two layers; that is, the negative active material layer is located on one side of the negative current collector, or the negative active material layer is located on opposite sides of the negative current collector.

[0083] For example, the negative electrode current collector can be made of metal materials such as copper foil, aluminum foil, or stainless steel, or it can be a composite foil material formed by combining metal and insulating materials.

[0084] For example, the negative electrode active material layer includes a negative electrode active material, a conductive agent, a binder, etc., and the negative electrode active material includes one or more of the following: artificial graphite, natural graphite, silicon carbide, silicon oxide, lithium titanate, etc.

[0085] The tab serves as the current output terminal of the battery cell. The tab is either integrated with or separately connected to the positive or negative electrode.

[0086] The separator, as an insulating layer, is used to prevent short circuits inside the battery module 100 cells caused by contact between the positive and negative electrode plates. As a semi-permeable layer, the separator prevents larger molecules from passing through while allowing smaller charged ions to pass through.

[0087] It should be noted that the bus 120 is arranged above the cell assembly 110 and is electrically connected to the cell assembly 110 (usually by welding to the tabs of the cells), thereby connecting multiple cells in parallel or in series.

[0088] Busbar 120 collects current and enables group connection between battery cells, providing a unified input / output port for battery module 100.

[0089] In addition, the limiting hole 121 provides a precise installation positioning reference for the entire bus 120. By cooperating with the limiting post 131 on the separator 130, it ensures that the bus 120 is accurately positioned during assembly and long-term use, preventing connection failure with the battery cell (such as poor soldering or desoldering) due to misalignment.

[0090] It should be noted that the separator 130 is a component installed between two adjacent cell bodies 111 to isolate and fix the adjacent cells, prevent them from directly contacting each other and causing a short circuit, and at the same time enhance the overall structural rigidity of the module.

[0091] The limiting post 131 on the separator 130 and the limiting hole 121 of the busbar 120 form a mechanical connection of "pin-positioning hole". This design not only fixes the busbar 120, but also constrains and determines the position of the separator 130 itself, so that the relative positional relationship between the battery cell, separator 130 and busbar 120 is precisely locked.

[0092] In addition, the limiting structure plays a guiding and initial fixing role in the assembly process, which simplifies the complex process of aligning the busbar 120 and installing it on multiple cells, and improves production efficiency and consistency.

[0093] Through the aforementioned configuration, specifically the engagement of the limiting post 131 on the separator 130 with the upper limit hole 121 of the busbar 120, precise positioning and fixation of the busbar 120 are achieved. This effectively prevents displacement or loosening of the busbar 120 under vibration or impact, thereby improving the mechanical stability and reliability of the battery module 100. Simultaneously, this structure simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the cell assembly 110 and the busbar 120, reducing the risk of poor contact.

[0094] In some alternative implementations, the limiting post 131 is located on top of the partition 130.

[0095] It should be noted that by setting the limiting post 131 on the top of the partition 130, the busbar 120 is precisely limited and fixed, which effectively prevents misalignment and loosening during use and improves the ease of assembly, structural stability and reliability of the busbar 120.

[0096] Furthermore, since the busbar is located above the partition 130, this arrangement facilitates the installation of both.

[0097] In some alternative embodiments, the spacer 130 has an opening 132 in the middle.

[0098] It should be noted that by opening an opening 132 in the middle of the separator 130, the opening 132 provides a dedicated buffer space for the expansion of the cell body 111, effectively releasing the internal mechanical stress generated during the cell cycle, avoiding safety hazards such as short circuits and shell deformation caused by excessive compression, and at the same time helping to stabilize the electrode interface, delaying battery performance degradation, and significantly improving battery safety and cycle life.

[0099] Furthermore, the battery cell is allowed to expand freely within a certain range, thereby effectively absorbing and releasing the internal mechanical stress caused by volume changes, and avoiding excessive stress accumulation inside the battery.

[0100] Without this opening 132, the expansion of the battery cell would forcefully compress the components above and below, potentially causing damage to the separator and disrupting contact between the positive and negative electrodes. Alternatively, the battery casing could bulge or even rupture, leading to problems such as leakage.

[0101] In some embodiments, the opening 132 is rectangular, matching the large surface of the cell body 111.

[0102] Figure 7 This is a schematic diagram of the wiring harness assembly in the battery module according to an embodiment of this application.

[0103] like Figures 1 to 7 As shown, in some optional embodiments, the battery module 100 further includes a wiring harness assembly 140 electrically connected to the bus 120, and the wiring harness assembly 140 includes a cable 141.

[0104] The partition 130 is provided with a mounting groove 133, and the cable 141 is located in the mounting groove 133.

[0105] It should be noted that the wire harness assembly 140 is directly fixed on the spacer 130, eliminating the need for traditional tray parts.

[0106] Furthermore, by utilizing the thickness of the partition 130 itself to accommodate the cable 141, concealed wiring is achieved. This solves the problem that the cable 141 requires additional routing channels within the module, which typically increase the module's size.

[0107] In some embodiments, the mounting groove 133 is located on the top of the partition 130, and the opening of the mounting groove 133 faces upward, which facilitates the installation of the cable 141.

[0108] In some alternative implementations, the battery module 100 also includes a bonding element 150;

[0109] The partition 130 is provided with a fixing hole 134, and the fastener 150 passes through the fixing hole 134 to fix the cable 141 in the mounting groove 133.

[0110] It should be noted that by selecting different lengths or elasticity of the "binding piece 150", cables 141 of different diameters can be adapted and a matching clamping force can be provided, which can secure the cable 141 firmly without damaging it.

[0111] Furthermore, when it is necessary to replace the cable 141, the fastener 150 can be easily loosened, the old cable 141 can be removed, a new cable 141 can be inserted, and then the cable can be re-secured.

[0112] In some embodiments, the fastener 150 may be a cable tie. The fixing hole 134 is a through hole through which the cable tie passes.

[0113] Figure 8 This is a schematic diagram of the busbar structure in the battery module of this application embodiment.

[0114] like Figures 1 to 8 As shown, in some optional embodiments, the wire harness assembly 140 further includes a nickel sheet 142;

[0115] A slot 122 is provided on the busbar 120, and a nickel sheet 142 is inserted into the slot 122 so that the nickel sheet 142 is electrically connected to the busbar 120.

[0116] It should be noted that this configuration makes the electrical connection between the nickel plate 142 and the busbar 120 more stable.

[0117] Furthermore, the method of pre-fixing the nickel sheet 142 onto the busbar 120 before welding facilitates the mass production of nickel sheet 142 welding and reduces production costs.

[0118] In some alternative embodiments, the nickel sheet 142 has a connecting portion 1421 and a snap-fit ​​portion 1422 connected together;

[0119] The snap-fit ​​part 1422 is located inside the snap-fit ​​slot 122, and the connecting part 1421 is connected to the side of the busbar 120.

[0120] It should be noted that the snap-fit ​​part 1422 has a certain contact area within the slot 122 that can conduct electricity, while the connecting part 1421 forms another independent and larger conductive channel with the side of the busbar 120.

[0121] First, the card slot 122 is inserted, which naturally provides coarse positioning for the nickel plate 142. Then, the connecting part 1421 naturally moves closer to and fits snugly against the side of the busbar 120. This solves the problem of needing a precision fixture to ensure the relative position of the nickel plate 142 and the busbar 120.

[0122] After the snap-fit ​​is completed, laser welding or resistance welding can be performed on the contact area between the connector 1421 and the side of the busbar 120 to form a permanent connection with extremely low resistance. This will be a hybrid connection solution of "mechanical snap-fit ​​+ welding" with extremely high reliability.

[0123] In some alternative embodiments, there are at least two connecting portions 1421, with at least two connecting portions 1421 located on both sides of the snap-fit ​​portion 1422.

[0124] It should be noted that the two symmetrical connecting parts 1421 ensure that the force exerted by the nickel plate 142 on the busbar 120 is balanced. When the current flows from the busbar 120 to the nickel plate 142, there are also two completely symmetrical paths.

[0125] In some alternative implementations, the battery module 100 also includes at least two end plates 160;

[0126] Along the length of the battery module 100, at least two end plates 160 are located on opposite sides of the cell assembly 110.

[0127] It should be noted that at least two end plates 160 are respectively disposed at the openings 132 on opposite sides of the cell assembly 110. The main function of the end plates 160 is to fix and support the cell assembly 110, ensure the stability of the cell assembly 110, and provide additional mechanical protection.

[0128] Furthermore, by using the end plate 160 to constrain the large-area expansion of the pouch battery, the deformation of the cell assembly 110 caused by expansion during charging and discharging can be effectively reduced. This helps maintain tight contact between the cell assemblies 110, thereby reducing the contact resistance at the solid-solid interface and improving the overall conductivity and energy efficiency of the battery.

[0129] Furthermore, the end plate 160 provides additional mechanical support to prevent the pouch battery from deforming or being damaged due to expansion during use, which helps to improve the overall structural stability of the battery module 100 and reduce the displacement or damage of the cell assembly 110 due to vibration or impact.

[0130] The battery module provided in this application includes a cell assembly, which includes multiple cell bodies spaced apart along the length of the battery module; a busbar located above the cell assembly and electrically connected to it, with a limiting hole on the busbar; and a separator located between two adjacent cell bodies along the length of the battery module, with a limiting post on the separator extending into the limiting hole to connect the separator and the busbar.

[0131] By cooperating with the limiting posts on the separator and the upper limit holes on the busbar, precise positioning and fixation of the busbar are achieved, effectively preventing displacement or loosening of the busbar under vibration or impact, and improving the mechanical stability and reliability of the battery module. At the same time, this structure simplifies the assembly process, improves production efficiency, and helps ensure a stable electrical connection between the cell assembly and the busbar, reducing the risk of poor contact.

[0132] In addition, this application embodiment also provides a battery box, including a box body and the above-mentioned battery module 100;

[0133] The battery module 100 is located inside the casing.

[0134] In some examples, the housing can be a rectangular structure, and the size of the housing can be greater than or equal to the size of the battery module 100, so that the housing can support the battery module 100.

[0135] It is understandable that the purpose of the enclosure is to house the battery module 100. It is also easy to understand that the enclosure is sealed to prevent side reactions from occurring within the battery cell assembly 110 in the battery module 100, which could affect the performance of the battery module 100.

[0136] For example, the size or shape of the housing is matched with the size and shape of the battery module 100. Specifically, adjustments can be made according to the actual situation, and this application embodiment does not impose too many limitations here.

[0137] In this embodiment, the battery module 100 can be configured as a rectangular structure. The battery module 100 can be located inside the housing.

[0138] Understandably, the enclosure is designed to support the battery module 100.

[0139] The dimensions of the aforementioned box can be set according to actual needs, and this application embodiment does not impose any further restrictions.

[0140] Additionally, it should be noted that this embodiment does not limit the shape of the box. For example, the box can be a regular shape such as a cuboid or a cylinder, or it can be other irregular shapes.

[0141] It should be noted that the specific structure of the battery module 100 will not be limited here; please refer to the above.

[0142] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0143] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0144] 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 (100), characterized in that, include: A battery cell assembly (110) includes a plurality of battery cell bodies (111), which are spaced apart along the length of the battery module (100). A busbar (120) is disposed above the battery cell assembly (110) and electrically connected to the battery cell assembly (110). The busbar (120) is provided with a limiting hole (121). The separator (130) is located between two adjacent cell bodies (111) along the length direction of the battery module (100). The separator (130) is provided with a limiting post (131), which extends into the limiting hole (121) so that the separator (130) and the busbar (120) are connected.

2. The battery module (100) according to claim 1, characterized in that, The limiting post (131) is located on top of the partition (130).

3. The battery module (100) according to claim 2, characterized in that, An opening (132) is formed in the middle of the partition (130).

4. The battery module (100) according to any one of claims 1 to 3, characterized in that, The battery module (100) further includes a wiring harness assembly (140), which is electrically connected to the busbar (120), and the wiring harness assembly (140) includes a cable (141); The partition (130) is provided with a mounting groove (133), and the cable (141) is located in the mounting groove (133).

5. The battery module (100) according to claim 4, characterized in that, The battery module (100) also includes a bonding element (150); The partition (130) is provided with a fixing hole (134), and the binding member (150) passes through the fixing hole (134) to fix the cable (141) in the mounting groove (133).

6. The battery module (100) according to claim 4, characterized in that, The wire harness assembly (140) also includes a nickel sheet (142); A slot (122) is provided on the busbar (120), and the nickel sheet (142) is inserted into the slot (122) so that the nickel sheet (142) is electrically connected to the busbar (120).

7. The battery module (100) according to claim 6, characterized in that, The nickel sheet (142) has a connecting part (1421) and a snap-fit ​​part (1422) connected together; The snap-fit ​​part (1422) is located in the slot (122), and the connecting part (1421) is connected to the side of the busbar (120).

8. The battery module (100) according to claim 7, characterized in that, There are at least two connecting parts (1421), and at least two connecting parts (1421) are located on both sides of the snap-fit ​​part (1422).

9. The battery module (100) according to any one of claims 1 to 3, characterized in that, The battery module (100) also includes at least two end plates (160); Along the length of the battery module (100), at least two of the end plates (160) are located on opposite sides of the cell assembly (110).

10. A battery box, characterized in that, Includes a housing and a battery module (100) as described in any one of claims 1 to 9; The battery module (100) is located inside the housing.

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