Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, and relates to the technical field of batteries. Wherein the battery module consists of a battery stack, a busbar unit and an integrated circuit board assembly. The integrated circuit board assembly comprises a wire harness, a plug-in, a terminal, a top film, a bottom film and a supporting pad. The wire harnesses are flatly laid on the bottom film and are covered by the top film, so that the arrangement orderliness of the wire harnesses is ensured. The top film, the wire harness and the bottom film are fixed above the cell stack through the supporting pad, so that the cell stack plays a role in limiting the integrated circuit board assembly. According to the battery module, the busbar unit is connected with the integrated circuit board through the terminal, and the busbar unit is positioned above the battery stack, so that the battery stack plays a role in limiting the busbar unit, the structural stability of the battery module is ensured, and the structural member cost and the production cost are reduced.

Description

Technical Field

[0001] The present application relates to a battery module and a battery pack, belonging to the field of battery technology. Background Art

[0002] In new energy vehicles, battery modules are the core units for energy conversion and storage, and their performance and reliability have become the core elements of vehicle system safety assurance.

[0003] However, during the design and integration of battery modules, wiring harness layout issues have become increasingly prominent. Existing wiring harnesses are typically secured using trays and fixed structures. However, as the number of wires increases, this method becomes less effective, resulting in a chaotic layout. Furthermore, when the wiring harnesses become complex, existing fixing methods make it difficult to precisely control the length of the harnesses, potentially causing terminals to deviate from their intended positions, adversely affecting signal acquisition accuracy and electrical connection reliability.

[0004] Therefore, how to solve the problem of disordered wiring harness layout in battery modules is an issue that needs to be solved urgently. Utility Model Content

[0005] The present application provides a battery module and a battery pack, which solve the problem of disordered wiring harness arrangement in the battery module in the related art.

[0006] In a first aspect, the present application provides a battery module, comprising:

[0007] Battery stack,

[0008] a bus unit, the bus unit being fixed above the battery stack;

[0009] An integrated circuit board assembly is fixed above the bus unit, and the integrated circuit board assembly includes a base film and a wiring harness fixed on the base film.

[0010] In some embodiments, the wiring harness includes a plurality of wires arranged side by side.

[0011] In some embodiments, the integrated circuit board assembly further comprises: a top film located above the bottom film and a support pad located below the bottom film;

[0012] The top film is used to protect the wiring harness, and the support pad plays a supporting role.

[0013] In some embodiments, the integrated circuit board assembly further comprises a plurality of terminals, wherein the plurality of terminals are arranged at intervals along an extending direction of the wires in the wiring harness;

[0014] One ends of the plurality of terminals are connected to the wire harness, and the other ends of the plurality of terminals are connected to the bus bar unit; and the top film and the bottom film cover partial areas of the terminals.

[0015] In some embodiments, a plurality of wire harnesses are stacked, and a separator is provided between any two stacked wire harnesses.

[0016] In some embodiments, the integrated circuit board assembly further comprises a plug-in unit,

[0017] When there is only one wiring harness, one end of the wiring harness is located inside the insert;

[0018] When the plurality of wire harnesses are stacked, one end of one wire harness is located inside one of the inserts, and one end of a stacked wire harness is located inside the same insert.

[0019] In some embodiments, the integrated circuit board assembly further includes a first plug-in and a second plug-in;

[0020] When the plurality of wire harnesses are stacked, one end of one wire harness is located inside the first plug-in, and one end of one stacked wire harness is located inside the second plug-in;

[0021] In some embodiments, the number of the busbar units is two;

[0022] The two busbar units are symmetrically arranged at both ends of the top of the battery stack;

[0023] Each busbar unit is provided with a plurality of adjacently arranged busbars, and the plurality of busbars are fixedly connected;

[0024] The busbars are arranged in a direction perpendicular to the busbar units.

[0025] In some embodiments, the battery stack includes a plurality of battery cells bonded side by side;

[0026] Limiting blocks are provided on the left and right sides and in the center of the top of the battery stack, and the limiting blocks are used to limit the integrated circuit board assembly.

[0027] On the second aspect, based on the above battery module, the present application also provides a battery pack, including the above battery module.

[0028] In the battery module provided herein, the battery stack serves as the core component for energy storage, with a busbar unit fixed above it, enabling the battery stack to efficiently transmit energy to the busbar unit. Furthermore, by tightly integrating the busbar unit with the battery stack, the battery module provided herein is relatively lightweight and has a low manufacturing cost.

[0029] As the foundation of the integrated circuit board assembly (ICA), the base film provides a stable support platform for the wiring harness above it. This support allows the wiring harness to be arranged flatly and orderly above it, ensuring the neatness and reliability of the ICA's internal structure. One end of the terminal connects to the wiring harness, allowing signals from the ICA to be transmitted through the terminal to other components, ensuring accurate transmission of circuit signals.

[0030] The busbar unit connects to the integrated circuit board assembly via terminals, securing the assembly and ensuring the stability of the battery module structure. The busbar unit is composed of multiple independent busbars connected together. These busbars are tightly arranged within the busbar unit and share the task of current collection and distribution.

[0031] In the battery pack proposed in this application, due to the application of the above-mentioned battery module, the battery pack can be made relatively light in weight and have a lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] Figure 1 A schematic diagram of a battery module according to an embodiment of the present application;

[0034] Figure 2 This is a schematic diagram of the installation of the battery module according to an embodiment of the present application;

[0035] Figure 3 A cross-sectional view of the structure of a battery module according to an embodiment of the present application;

[0036] Figure 4 This is a schematic diagram of the installation of the integrated circuit assembly according to an embodiment of the present application;

[0037] Figure 5 This is a schematic diagram of a first exploded structure of a double-layer wiring harness integrated assembly according to an embodiment of the present application;

[0038] Figure 6 This is a schematic diagram of the second exploded structure of the double-layer wiring harness integrated assembly according to an embodiment of the present application.

[0039] Reference numerals:

[0040] Battery stack-100, battery cell-101, limit block-102,

[0041] Busbar unit-200, busbar-201, first busbar unit-202, second busbar unit-203,

[0042] Integrated circuit board assembly-300, bottom film-301, wiring harness-302, top film-303, support pad-304, terminal-305, diaphragm-306, plug-in-307, wire-321,

[0043] First plugin - 371, second plugin 372,

[0044] Exposed area-351, covered area-352,

[0045] First wiring harness 321 , second wiring harness 322 , third wiring harness 323 , fourth wiring harness 324 . DETAILED DESCRIPTION

[0046] This section describes embodiments of the present application in detail, examples of which 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 intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] 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.

[0048] 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 at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0049] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] 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.

[0051] 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.

[0052] In new energy vehicles, battery modules are the core units for energy conversion and storage, and their performance and reliability have become the core elements of vehicle system safety assurance.

[0053] However, during the design and integration of battery modules, wiring harness layout issues have become increasingly prominent. Existing wiring harnesses are typically secured using trays and fixed structures. However, as the number of wires increases, this method becomes less effective, resulting in a chaotic layout. Furthermore, when the wiring harnesses become complex, existing fixing methods make it difficult to precisely control the length of the harnesses, potentially causing terminals to deviate from their intended positions, adversely affecting signal acquisition accuracy and electrical connection reliability.

[0054] Therefore, how to solve the problem of disordered wiring harness layout in battery modules is an issue that needs to be solved urgently.

[0055] In the battery module provided herein, the battery stack serves as the core component for energy storage, with a busbar unit fixed above it, enabling the battery stack to efficiently transmit energy to the busbar unit. Furthermore, by tightly integrating the busbar unit with the battery stack, the battery module provided herein is relatively lightweight and has a low manufacturing cost.

[0056] As the foundation of the integrated circuit board assembly (ICA), the base film provides a stable support platform for the wiring harness above it. This support allows the wiring harness to be arranged flatly and orderly above it, ensuring the neatness and reliability of the ICA's internal structure. One end of the terminal connects to the wiring harness, allowing signals from the ICA to be transmitted through the terminal to other components, ensuring accurate transmission of circuit signals.

[0057] The busbar unit connects to the integrated circuit board assembly via terminals, securing the assembly and ensuring the stability of the battery module structure. The busbar unit is composed of multiple independent busbars connected together. These busbars are tightly arranged within the busbar unit and share the task of current collection and distribution.

[0058] In the battery pack proposed in this application, due to the application of the above-mentioned battery module, the battery pack can be made relatively light in weight and have a lower manufacturing cost.

[0059] The battery module and battery pack provided in this application are described in detail below with reference to specific embodiments.

[0060] The present application embodiment proposes a battery module, referring to Figures 1 to 6 As shown, it includes a battery stack 100, a busbar unit 200, and an integrated circuit board assembly 300. The battery module can be used as an electric energy device in a battery pack and can also be used in other electrical devices. This application does not impose any special restrictions on this.

[0061] Integrated circuit board assembly 300 includes a base film 301 and a wiring harness 302 secured to the base film 301. Base film 301 serves as a stable support, providing a flat and organized placement for the secured wiring harness 302. This design effectively organizes and secures the wiring harness 302, preventing it from being placed disorganized and chaotically, and ensuring a neat and orderly arrangement of the entire wiring harness.

[0062] The battery stack 100 is the basic support structure of the battery module of this application. It provides a support base for at least some of the other components of the battery module and serves to secure at least some of these components. The battery stack 100 has a compact structure, which not only reduces unnecessary space and weight but also increases its energy density, thereby reducing the manufacturing cost of the battery module of this application.

[0063] The busbar unit 200 is fixed above the battery stack 100, allowing the battery stack 100 to limit the busbar unit 200, thereby ensuring the stability of the battery module's structural components. The busbar unit 200 is composed of multiple independent busbars 201. These busbars 201 are closely arranged within the busbar unit 200 and share the task of current collection and distribution.

[0064] In some embodiments, reference Figure 1 as well as Figure 2 As shown, the battery stack 100 is composed of multiple battery cells 101 bonded side by side, and the battery stack 100 can provide electrical energy. Stoppers 102 are provided at the top and center of the left and right sides of the battery stack 100 to limit the position of the integrated circuit board assembly 300.

[0065] Specifically, the battery stack 100 is a highly integrated energy storage unit, which is composed of multiple battery cells 101 tightly arranged and bonded together. By assembling these battery cells 101, they can work together to provide stable and efficient power output for the battery stack 100.

[0066] Two stoppers 102 are fixed to the top of the left and right sides of the battery stack 100. These stoppers 102 position the integrated circuit board assembly 300, ensuring it remains firmly in place during installation or operation, preventing unnecessary movement or shaking, and thus ensuring the stability and reliability of the entire battery module.

[0067] In some embodiments, reference Figure 4 The integrated circuit board assembly 300 provided in this application is composed of a bottom film 301 , a wiring harness 302 , a top film 303 , a support pad 304 , a terminal 305 and an insert 307 .

[0068] Base film 301: Base film 301 serves as the basis of the integrated circuit board assembly 300. Its main function is to provide a flat and stable support surface so that the wiring harness 302 laid on it can be laid smoothly and orderly, thereby protecting the wiring harness 302 from interference and physical damage from the external environment.

[0069] Wiring harness 302: The wiring harness 302 is composed of a plurality of conductive wires 321 and is the core part of the power transmission and signal transmission in the integrated circuit board assembly 300. The wiring harness 302 ensures that power and signals can be accurately transmitted between other components.

[0070] Top film 303: Combined with bottom film 301, top film 303 forms a closed environment, covering and protecting wiring harness 302. This not only prevents wiring harness 302 from being contaminated and damaged by the external environment, but also improves the neatness and durability of integrated circuit board assembly 300.

[0071] Support pad 304: The support pad 304 is placed on the base film 301 to further support and fix the wiring harness 302 laid on the base film 301. Its main function is to prevent the wiring harness 302 from shifting or becoming tangled due to vibration or external force during use, ensuring that the wiring harness 302 always remains neat and orderly.

[0072] Terminal 305: Terminal 305 is used to transmit power and signals. Terminal 305 is usually connected to one end of the wiring harness 302 to ensure that power and signals can be smoothly transmitted from one point to another, thereby achieving coordinated operation of the entire battery module.

[0073] Insert 307: Insert 307 is used to fix and organize the multiple wires 321 in the wiring harness 302. It can effectively prevent the wires 321 from getting loose, crossing or tangled during use, thereby ensuring stable transmission of power and clear transmission of signals.

[0074] The assembly sequence for the integrated circuit board assembly 300 is as follows: first, the top film 303 is placed, then the wiring harness 302 is laid on the bottom film 301 and supported and secured by the support pad 304; then, one side of the wiring harness 302 is secured by the plug 307; finally, multiple terminals 305 are connected to the wiring harness 302. This assembly design not only makes the entire integrated circuit board assembly 300 compact, but also makes the battery module relatively lightweight and reduces production costs.

[0075] Specifically, the integrated circuit board assembly 300 proposed in this application achieves the optimization goals of compact structure, light weight and low cost through design and assembly sequence. The assembly process starts with the top film 303, which is placed first as a protective layer, and then the wiring harness 302 is laid smoothly on the bottom film 301. The bottom film 301 serves as a solid foundation to ensure the stability and order of the wiring harness 302 and effectively resist external interference and physical damage. The wiring harness 302, as the core of power and signal transmission, is composed of a plurality of conductive wires 321 to ensure the accuracy of information flow. Immediately afterwards, the support pad 304 is placed under the bottom film 301 to stabilize the position of the wiring harness 302 and prevent it from shifting due to vibration or external force, thereby maintaining the overall neatness and order of the wiring harness 302. The introduction of the plug-in 307 further fixes and organizes the wires 321 in the wiring harness 302, avoiding problems such as loosening, crossing or entanglement, and ensuring the stable transmission of power and signals. Finally, multiple terminals 305 are connected to specific positions of the wiring harness 302, which serve as a bridge for signal transmission to ensure coordinated operation within the battery modules.

[0076] In some embodiments, reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 as well as Figure 5 As shown, there are multiple terminals 305, which are arranged at intervals. Each terminal 305 is divided into an exposed area 351 and a covered area 352.

[0077] The exposed area 351 is the portion where the other end of the terminal 305 connects to the busbar unit 200, ensuring stable and reliable transmission of power and signals between the two. Furthermore, the exposed areas 351 of the multiple terminals 305 allow the busbar unit 200 to achieve a reliable connection through direct contact, further increasing the battery module's structure and reducing the cost of structural components and production.

[0078] Enclosed area 352 is the portion where one end of terminal 305 connects to wiring harness 302, ensuring stable and reliable transmission of power and signals between the two. This connection area is tightly enclosed by top film 303 and bottom film 301, creating a protected internal environment that effectively prevents external interference and damage to the wiring area, enhancing the overall safety and reliability of integrated circuit board assembly 300.

[0079] Specifically, the terminals 305 are designed to be multiple and arranged in an interval manner. This ensures the rational use of space and facilitates the realization of multiple connection points. Each terminal 305 can be divided into two areas, an exposed area 351 and a covered area 352. The exposed area 351 is the part where one end of the terminal 305 is connected to the busbar unit 200. Its design ensures efficient and stable transmission of power and signals between the two, thereby simplifying the connection structure and making the battery module more compact, thereby reducing the overall cost of structural components and production.

[0080] On the other hand, the covered area 352 is the part where the other end of the terminal 305 is connected to the wiring harness 302, and the connected part is tightly wrapped by the top film 303 and the bottom film 301 to form a closed environment, thereby enabling reliable transmission of electrical energy and signals between the wiring harness and the terminal.

[0081] In some embodiments, reference Figure 4 and Figure 5 There are two layouts of the wiring harness 302 in the integrated circuit board assembly 300. The first is that there is only one wiring harness 302 in the integrated circuit board assembly 300, and the second is that there are multiple wiring harnesses 302 arranged in a stacked manner in the integrated circuit board assembly 300.

[0082] When only one wiring harness 302 is provided in the integrated circuit board assembly 300 , the top film 303 , the wiring harness 302 , the bottom film 301 and the support pad 304 are adhered in order from top to bottom, and one end of the wiring harness 302 is placed inside the plug 307 .

[0083] When a plurality of wiring harnesses 302 are configured in the integrated circuit board assembly 300, these wiring harnesses 302 are effectively separated by a diaphragm to maintain their respective independence and stability. For example, the present application provides a stacking situation in which two wiring harnesses share a plug-in (307), and the two wiring harnesses are respectively a first wiring harness 321 and a second wiring harness 322, and the first wiring harness 321 and the second wiring harness 322 are stacked. The first wiring harness 321 is placed above the second wiring harness 322. During the connection process, the arrangement order of the structural parts of each layer is from top to bottom as the top film 303, the first wiring harness 321, the diaphragm 306, the second wiring harness 322, the bottom film 301 and the support pad 304, which are tightly adhered together in sequence. In addition, one end of the first wiring harness 321 and one end of the second wiring harness 322 are both placed inside the plug-in 307 to ensure the stability and reliability of the connection of each structural part.

[0084] Specifically, when there is only one wiring harness 302 in the integrated circuit board assembly 300, its structure is relatively simple and straightforward. At this time, the top film 303 is placed first as the top layer, followed by the wiring harness 302, which carries the task of transmitting electrical energy or signals. Subsequently, the bottom film 301 is placed under the wiring harness 302 to provide support and protection for the entire structure. The support pad 304 is located under the bottom film 301, further enhancing the stability of the integrated circuit board assembly 300. One end of the wiring harness 302 is located inside the plug-in 307. These five structural members are tightly adhered in sequence and together constitute the basic framework of the integrated circuit board assembly 300.

[0085] However, when a multi-layer wiring harness 302 is provided in the integrated circuit board assembly 300, its structure is relatively complex. In the configuration of the multi-layer wiring harness 302, each layer of the wiring harness 302 is effectively separated by a diaphragm 306 to prevent signal interference and electrical short circuits. Taking the double-layer structure including the first wiring harness 321 and the second wiring harness 322 as an example, the first wiring harness 321 is placed parallel to the second wiring harness 322, and the two are separated by the diaphragm 306. At this time, the structural hierarchy of the entire integrated circuit board assembly 300 becomes more complex but orderly: the top film 303 is the top layer, followed by the first wiring harness 321, then the diaphragm 306 for separation, and below it is the second wiring harness 322. The bottom film 301 is located at the bottom to provide support, and the support pad 304 is located under the bottom film 301. These six structural parts are tightly adhered in sequence, and together constitute an efficient and stable multi-layer integrated circuit board assembly 300.

[0086] In some embodiments, reference Figure 6 As shown. The present application provides a stacking situation in which two wiring harnesses each use a plug-in, and the two wiring harnesses are the third wiring harness 323 and the fourth wiring harness 324. When the number of wiring harnesses of the third wiring harness 323 and the number of wiring harnesses of the fourth wiring harness 324 cannot share the same plug-in 307 for connection, a separate plug-in configuration can be adopted. Specifically, the plug-in 307 can be divided into two independent parts, a first plug-in 371 and a second plug-in 372, wherein the first plug-in 371 is arranged above the second plug-in 372 to achieve effective layering and layout optimization in space. The first plug-in 371 is connected to one end of the third wiring harness 323, and the second plug-in 372 is connected to one end of the fourth wiring harness 324.

[0087] In some embodiments, reference Figure 1 and Figure 2As shown. There are two bus units 200, namely the first bus unit 202 and the second bus unit 203. The two bus units are installed at both ends of the top of the battery stack 100 and are symmetrically arranged. Inside the first bus unit 202 and the second bus unit 203, each contains a plurality of bus bars 201 arranged closely adjacent to each other. The arrangement direction of the multiple bus bars 201 is perpendicular to the arrangement direction of the multiple bus units 200. This compact layout not only reduces the use of materials and reduces production costs, but also enhances the structural stability of the bus unit 200.

[0088] Specifically, the first busbar unit 202 is arranged horizontally. When the first busbar unit 202 is composed of multiple busbars 201, the arrangement direction of the multiple busbars 201 is perpendicular to the arrangement direction of the first busbar unit 202, that is, the multiple busbars 201 are vertically distributed in the first busbar unit 202.

[0089] Similarly, the second busbar unit 203 is also arranged horizontally. The second busbar unit 203 and the first busbar unit 202 are both mounted at the top ends of the battery stack 100, with the second busbars symmetrically arranged with the first busbar unit 202. When the second busbar unit 203 is also composed of multiple busbars 201, the arrangement direction of the multiple busbars 201 is perpendicular to the arrangement direction of the second busbar unit 203, that is, the multiple busbars 201 are vertically distributed within the second busbar unit 203.

[0090] Based on the battery module described above, an embodiment of the present application further provides a battery pack, which includes the battery module described above. Due to the application of the battery module described above, the battery pack can be relatively light in weight and has a lower manufacturing cost.

[0091] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A battery module, characterized in that: The battery module comprises: Battery stack (100), A busbar unit (200), the busbar unit (200) being fixed above the battery stack (100); An integrated circuit board assembly (300) is fixed above the bus unit (200), and the integrated circuit board assembly (300) comprises a base film (301) and a wiring harness (302) fixed on the base film (301).

2. The battery module according to claim 1, characterized in that: A plurality of conductors (321) arranged side by side are provided in the wiring harness (302).

3. The battery module according to claim 1, wherein: The integrated circuit board assembly (300) further comprises: a top film (303) located above the bottom film (301) and a support pad (304) located below the bottom film (301); The top film (303) is used to protect the wiring harness (302), and the support pad (304) plays a supporting role.

4. The battery module according to claim 3, characterized in that: The integrated circuit board assembly further comprises a plurality of terminals (305), wherein the plurality of terminals (305) are arranged at intervals along an extension direction of the wires (321) in the wiring harness (302); One end of the plurality of terminals (305) is connected to the wiring harness (302), and the other end of the plurality of terminals (305) is connected to the busbar unit (200); and the top film (303) and the bottom film (301) cover a partial area of the terminal (305).

5. The battery module according to claim 3, wherein: A plurality of wire harnesses (302) are stacked and arranged, and a diaphragm (306) is provided between any two stacked wire harnesses (302).

6. The battery module according to claim 5, characterized in that: The integrated circuit board assembly (300) further includes a plug-in unit (307), When there is only one wire harness (302), one end of the wire harness (302) is located inside the plug-in unit (307); When the plurality of wire harnesses (302) are stacked, one end of one wire harness (302) is located inside one of the plug-ins (307), and one end of a stacked wire harness (302) is located inside the same plug-in (307).

7. The battery module according to claim 6, characterized in that: The integrated circuit board assembly further includes a first plug-in unit (371) and a second plug-in unit (372); When the plurality of wire harnesses (302) are stacked, one end of one wire harness (302) is located inside the first plug-in (371), and one end of a stacked wire harness (302) is located inside the second plug-in (372).

8. The battery module according to claim 6, characterized in that: The number of the busbar units (200) is two; The two busbar units (200) are symmetrically arranged at both ends of the top of the battery stack (100); The two busbar units (200) are each provided with a plurality of adjacently arranged busbars (201), and the plurality of busbars (201) are fixedly connected; The arrangement direction of the plurality of busbars (201) is perpendicular to the arrangement direction of the plurality of busbar units (200).

9. The battery module according to claim 1, characterized in that: The battery stack (100) comprises a plurality of battery cells (101) bonded side by side; Limit blocks (102) are provided on the left and right sides of the top of the battery stack (100) and at a central position. The limit blocks (102) are used to limit the integrated circuit board assembly (300).

10. A battery pack, characterized in that: Comprising the battery module according to any one of claims 1 to 9.

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