Battery module

Abstract

The utility model relates to the technical field of secondary batteries, in particular to a battery module. The battery module comprises at least two battery cell components, a battery management unit and a collection component; the at least two battery cell assemblies comprise a first battery cell assembly and a second battery cell assembly; the acquisition assembly comprises at least two acquisition wire harnesses, the at least two acquisition wire harnesses comprise a first acquisition wire harness and a second acquisition wire harness, two ends of the first acquisition wire harness are respectively provided with a first electric connector and a second electric connector, the second acquisition wire harness is provided with a third electric connector, the first electric connector is electrically connected with the battery management unit, and the second electric connector is electrically connected with the battery management unit. The second electric connector is electrically connected with the third electric connector; the battery management unit is used for collecting working data of the first battery cell assembly through the first collection wire harness and collecting working data of the second battery cell assembly through the second collection wire harness. Through the mode, the problems that the number of collected wire harnesses of the battery module is large, wiring is difficult, and the energy density of the battery module is reduced are solved.

Description

Technical Field

[0001] This application relates to the field of secondary battery technology, and more particularly to a battery module. Background Technology

[0002] A battery module includes a casing and multiple battery cells housed within the casing. These cells can be connected in parallel or series. To ensure the safe and efficient operation of the battery module, it typically also includes a data acquisition harness. This harness is used to collect voltage and temperature data from the battery cells. Based on this data, the charging and discharging power of the cells can be adjusted to ensure optimal operation, thereby improving charging and discharging efficiency and safety.

[0003] Each battery cell needs to be connected to the battery management unit via a data acquisition harness, resulting in a large number of data acquisition harnesses within the battery module, making wiring difficult and occupying a significant amount of space within the battery module, thus reducing the energy density of the battery module. Utility Model Content

[0004] The embodiments of this application aim to provide a battery module that can at least improve the problems of a large number of acquisition harnesses, difficult wiring, and reduced energy density of the battery module.

[0005] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions:

[0006] This application provides a battery module, which includes at least two battery cell assemblies, a battery management unit, and a data acquisition component. The at least two battery cell assemblies include a first battery cell assembly and a second battery cell assembly. The data acquisition component includes at least two data acquisition harnesses, namely a first data acquisition harness and a second data acquisition harness. The first data acquisition harness has a first electrical connector and a second electrical connector at its two ends, respectively. The second data acquisition harness has a third electrical connector. The first electrical connector is electrically connected to the battery management unit, and the second electrical connector is electrically connected to the third electrical connector. The battery management unit is used to acquire the operating data of the first battery cell assembly through the first data acquisition harness and to acquire the operating data of the second battery cell assembly through the second data acquisition harness.

[0007] In some embodiments, the second electrical connector is plugged into the third electrical connector.

[0008] In some embodiments, the first electrical connector is electrically connected to the battery management unit via a cable.

[0009] In some embodiments, the battery cell assembly includes a mounting frame, a plurality of battery cell units, and a plurality of first electrical connectors. The mounting frame is disposed on the plurality of battery cell units, and the first electrical connectors are disposed on the mounting frame. The first electrical connectors are used to connect two battery cell units in series. A first data acquisition harness is disposed on the mounting frame of the first battery cell assembly, and a second data acquisition harness is disposed on the mounting frame of the first battery cell assembly. The data acquisition assembly includes a data acquisition connector, which electrically connects the first electrical connector to the data acquisition harness.

[0010] In some embodiments, the acquisition component further includes a temperature sensor disposed on the acquisition connector.

[0011] In some embodiments, the mounting bracket is provided with a vent hole, which is disposed opposite to the pressure relief valve of the battery cell unit, and the acquisition component is spaced apart from the vent hole.

[0012] In some embodiments, the battery module includes at least two sets of the battery cell assemblies and at least two acquisition components. Each set of the battery cell assemblies includes a first battery cell assembly and a second battery cell assembly. Each acquisition component is used to acquire the working data of the first battery cell assembly and the second battery cell assembly in each set of the battery cell assemblies.

[0013] In some embodiments, in each group of the cell assemblies, two cell assemblies are arranged at intervals along a first direction; multiple groups of cell assemblies are arranged along a second direction, the second direction being perpendicular to the first direction.

[0014] In some embodiments, the battery management unit is located on the side of the first cell assembly opposite to the second cell assembly.

[0015] In some embodiments, the battery module further includes a heat exchange plate and a top cover, the heat exchange plate and the top cover forming a receiving cavity, and the cell assembly, the battery management unit and the acquisition assembly are all disposed within the receiving cavity.

[0016] In some embodiments, the first electrical connector includes a first sub-electrical connector and a second sub-electrical connector, wherein the second sub-electrical connector is electrically connected to the second electrical connector.

[0017] In the battery module of this application embodiment, a first acquisition harness and a second acquisition harness are used to acquire operating data of a first battery cell assembly and a second battery cell assembly, respectively. The first acquisition harness and the second acquisition harness are electrically connected to transmit the operating data of the second battery cell assembly acquired by the second acquisition harness to the battery management unit via the first acquisition harness. This shortens the total length of the first and second acquisition harnesses, reducing the total length of the acquisition harnesses within the battery module. Furthermore, the first and second acquisition harnesses are connected in series, reducing the total number of acquisition harnesses within the battery module. Consequently, the wiring of the acquisition harnesses within the battery module is simpler, and the acquisition harnesses occupy less space, improving the problems of a large number of acquisition harnesses, difficult wiring, and reduced energy density of the battery module.

[0018] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is an exploded view of the battery module according to an embodiment of this application;

[0021] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0023] Figure 4 yes Figure 1 A magnified view of a section at point C.

[0024] The reference numerals in the detailed embodiments are as follows:

[0025] 100. Battery module;

[0026] 1. Battery cell assembly; 1a. First battery cell assembly; 1b. Second battery cell assembly;

[0027] 11. Mounting bracket; 111. Drain hole; 12. Battery cell unit; 13. First electrical connector; 14. Second electrical connector;

[0028] 2. Battery Management Unit;

[0029] 3. Data acquisition components;

[0030] 31. Acquisition harness; 31a. First acquisition harness; 31b. Second acquisition harness;

[0031] 311, First electrical connector; 3111, First sub-electrical connector; 3112, Second sub-electrical connector; 312, Second electrical connector; 313, Third electrical connector;

[0032] 32. Collect connectors;

[0033] 4. Heat exchange plate; 5. Top cover;

[0034] X, the first direction; Y, the second direction. Detailed Implementation

[0035] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0041] Please see Figure 1 This application provides a battery module 100, which includes at least two battery cell assemblies 1, a battery management unit 2, and a data acquisition component 3. The battery cell assemblies 1 are used for charging and discharging. The battery management unit 2 is electrically connected to the data acquisition component 3, and the battery management unit 2 is used to acquire operating data of the battery cell assemblies 1 through the data acquisition component 3. The operating data includes at least one of the temperature and voltage of the battery cell assemblies 1.

[0042] For the aforementioned battery cell assembly 1, at least two battery cell assemblies 1 include a first battery cell assembly 1a and a second battery cell assembly 1b. That is, the number of battery cell assemblies 1 is two or more, and there is at least one first battery cell assembly 1a and one second battery cell assembly 1b among them.

[0043] The acquisition component 3 described above includes at least two acquisition harnesses 31, which include a first acquisition harness 31a and a second acquisition harness 31b. Please refer to [further details omitted]. Figure 2 and Figure 3The first acquisition harness 31a has a first electrical connector 311 and a second electrical connector 312 at both ends, and the second acquisition harness 31b has a third electrical connector 313. The first electrical connector 311 is electrically connected to the battery management unit 2, and the second electrical connector 312 is electrically connected to the third electrical connector 313. The acquisition harness 31 can be in the form of FPC (Flexible Printed Circuit Board), PCB (Printed Circuit Board), or FFC (Flexible Flat Cable), etc. In each acquisition component 3, there are two or more acquisition harnesses 31, and at least one of them is a first acquisition harness 31a and one is a second acquisition harness 31b.

[0044] For the aforementioned battery management unit 2, the battery management unit 2 is used to acquire the operating data of the first cell assembly 1a through the first acquisition harness 31a, and to acquire the operating data of the second cell assembly 1b through the second acquisition harness 31b. For example, please refer to... Figure 1 The first acquisition harness 31a is attached to the first battery cell assembly 1a, and the second acquisition harness 31b is attached to the second battery cell assembly 1b. Both the first and second acquisition harnesses 31a and 31b are equipped with temperature sensors (not shown), enabling them to acquire temperature data of the first and second battery cell assemblies 1a and 1b respectively. The first acquisition harness 31a is electrically connected to the tab of the first battery cell assembly 1a, and the second acquisition harness 31b is electrically connected to the tab of the second battery cell assembly 1b, enabling them to acquire voltage data of the first and second battery cell assemblies 1a and 1b respectively. The acquisition harness 31 can directly acquire the voltage data of the battery cell assembly 1a. For example, the acquisition harness 31 may be equipped with a voltage sampling chip (not shown), allowing it to directly acquire the voltage data, which is then transmitted to the battery management unit 2. Alternatively, the acquisition harness 31 may only be used to transmit the voltage of the battery cell assembly 1a to the battery management unit 2, which is equipped with a voltage sampling chip (not shown), allowing it to directly acquire the voltage data.

[0045] In the prior art, each battery cell assembly 1 is electrically connected to the battery management unit 2 through a data acquisition harness 31, resulting in a large number of data acquisition harnesses 31, difficult wiring, and occupying a large amount of space in the battery module 100, thus reducing the energy density of the battery module 100.

[0046] In this embodiment, the first acquisition harness 31a and the second acquisition harness 31b are electrically connected to transmit the working data of the second cell assembly 1b acquired by the second acquisition harness 31b to the battery management unit 2 via the first acquisition harness 31a. This shortens the total length of the first acquisition harness 31a and the second acquisition harness 31b, reducing the total length of the acquisition harnesses 31 within the battery module 100. Furthermore, the first acquisition harness 31a and the second acquisition harness 31b are connected in series, reducing the total number of acquisition harnesses 31 within the battery module 100. This simplifies the wiring of the acquisition harnesses 31 within the battery module 100, reduces the volume occupied by the acquisition harnesses 31, and improves the problems of a large number of acquisition harnesses 31, difficult wiring, and reduced energy density of the battery module 100.

[0047] In some embodiments, the first electrical connector 311 is electrically connected to the battery management unit 2 via a cable. For example, the battery management unit 2 is provided with a female connector socket, and the first electrical connector 311 is a female connector socket. The first electrical connector 311 and the battery management unit 2 can be electrically connected via a cable with male connector heads at both ends. The length of the cable can be set according to the distance between the first electrical connector 311 and the battery management unit 2 to reduce the total length of the cables within the battery module 100.

[0048] In some embodiments, the first electrical connector 311 is plugged into the battery management unit 2. For example, the battery management unit 2 has a male connector head, and the first electrical connector 311 is a female connector head; the two can be directly plugged into each other without the need for additional cable connections, thereby reducing the total length and number of cables within the battery module 100. The battery management unit 2 is detachably mounted on the cell assembly 1. When the battery management unit 2 is mounted on the cell assembly 1, the first electrical connector 311 is plugged into it. Therefore, when plugging the first electrical connector 311 into the battery management unit 2, it is only necessary to mount the battery management unit 2 onto the cell assembly 1, simplifying the assembly process of the battery module 100, and the plugging connection between the first electrical connector 311 and the battery management unit 2 is less likely to loosen.

[0049] In some embodiments, the second electrical connector 312 and the third electrical connector 313 are electrically connected by a cable. For example, both the second electrical connector 312 and the third electrical connector 313 are female connectors, and the second electrical connector 312 and the third electrical connector 313 can be electrically connected by a cable with male connectors at both ends. The length of the cable can be set according to the distance between the second electrical connector 312 and the third electrical connector 313 to reduce the total length of the cables within the battery module 100.

[0050] In some embodiments, the second electrical connector 312 and the third electrical connector 313 are plugged into each other. For example, one of the second electrical connector 312 and the third electrical connector 313 is a female connector and the other is a male connector; they can be directly plugged into each other without additional cable connections, thereby reducing the total length and number of cables within the battery module 100. Where the first cell assembly 1a and the second cell assembly 1b are relatively fixed, for example, jointly mounted on the heat exchange plate 4 described below, the second electrical connector 312 and the third electrical connector 313 are plugged into each other. Therefore, when plugging the second electrical connector 312 and the third electrical connector 313 into each other, it is only necessary to fix the first cell assembly 1a and the second cell assembly 1b relatively, simplifying the assembly process of the battery module 100, and the plugging connection between the second electrical connector 312 and the third electrical connector 313 is less likely to loosen.

[0051] In some embodiments, please refer to Figure 1 and Figure 4 The battery cell assembly 1 includes a mounting frame 11, multiple battery cell units 12, and multiple first electrical connectors 13.

[0052] For the aforementioned mounting bracket 11, please refer to Figure 1 and Figure 4 The mounting bracket 11 is disposed on multiple battery cell units 12. For example, multiple battery cell units 12 are horizontally stacked, and the mounting bracket 11 is disposed on the top surface of multiple battery cell units 12, that is, the mounting bracket 11 spans multiple battery cell units 12. Optionally, the mounting bracket 11 is made of insulating material.

[0053] For the first electrical connector 13 mentioned above, please refer to Figure 1 and Figure 4 A first electrical connector 13 is disposed on the mounting bracket 11 and is used to connect two battery cell units 12 in series. For example, the first electrical connector 13 is used to connect the positive electrode tab of one battery cell unit 12 to the negative electrode tab of another adjacent battery cell unit 12, thereby connecting the two battery cell units 12 in series. Multiple battery cell units 12 can be connected in series by multiple first electrical connectors 13. Optionally, the first electrical connector 13 is a copper busbar, and the first electrical connector 13 is welded to the electrode tab of the battery cell unit 12. The first electrical connector 13 is disposed on the side of the mounting bracket 11 opposite to the battery cell assembly 1. By connecting the first electrical connector 13 to the electrode tab of the battery cell unit 12, the mounting bracket 11 is indirectly fixed to the battery cell assembly 1.

[0054] In some embodiments, the battery cell assembly 1 includes a second electrical connector 14 electrically connected to the tabs of the battery cell assembly 1. The second electrical connector 14 is used to electrically connect the battery cell assembly 1 to an external electrical device, or to connect two battery cell assemblies 1 in series. For example, when multiple battery cell units 12 are connected in series, the two outermost battery cell units 12 each have an empty tab, which is a positive tab and a negative tab, respectively. The two second electrical connectors 14 are electrically connected to the two empty tabs, and by connecting the two second electrical connectors 14 to the external electrical device, the battery cell assembly 1 can be electrically connected to the external electrical device; or, one second electrical connector 14 of one battery cell assembly 1 is electrically connected to one second electrical connector 14 of another battery cell assembly 1, thereby connecting the two battery cell assemblies 1 in series. It is understood that multiple battery cell assemblies 1 can be connected in series sequentially via the second electrical connectors 14. Optionally, the second electrical connector 14 is a copper busbar, and the second electrical connector 14 is welded to the tab of the battery cell unit 12.

[0055] In some embodiments, please refer to Figure 1 The first data acquisition harness 31a and the second data acquisition harness 31b are both disposed on the mounting bracket 11 of the first battery cell assembly 1a. By placing the data acquisition harness 31 on the mounting bracket 11, the data acquisition harness 31 is relatively fixed to the battery cell assembly 1, reducing the problem of the data acquisition harness 31 shaking within the battery module 100, improving the problem of short circuits caused by insulation layer damage due to friction and expansion, and extending the service life of the data acquisition harness 31. Optionally, the data acquisition harness 31 is bonded to the mounting bracket 11; or the mounting bracket 11 has a groove, and the data acquisition harness 31 is snapped into the groove of the mounting bracket 11.

[0056] In some embodiments, please refer to Figure 2 and Figure 4 The acquisition component 3 includes an acquisition connector 32, which electrically connects the first electrical connector 13 to the acquisition harness 31. By connecting the first electrical connector 13 to the acquisition harness 31 via the acquisition connector 32, the voltage of the first electrical connector 13 is conducted to the acquisition harness 31, allowing the battery management unit 2 to acquire voltage data of the cell assembly 1 through the acquisition component 3. Optionally, one end of the acquisition connector 32 is soldered to the first electrical connector 13, and the other end of the acquisition connector 32 is snap-fitted to or soldered to the acquisition harness 31. Optionally, the acquisition connector 32 is a copper busbar.

[0057] In some embodiments, please refer to Figure 4 Furthermore, the acquisition connector 32 also electrically connects the second electrical connector 14 to the acquisition harness 31. Thus, the battery management unit 2 can acquire the voltage data of the two outermost cell units 12 of the cell assembly 1 through the acquisition component 3.

[0058] In some embodiments, the acquisition component 3 further includes a temperature sensor (not shown), which is disposed on the acquisition connector 32. It is understood that the acquisition connector 32 corresponds one-to-one with the first electrical connector 13, and the first electrical connector 13 corresponds to two adjacent battery cells 12. By disposing the temperature sensor on the acquisition connector 32, temperature data of any two adjacent battery cells 12 can be acquired. Alternatively, the temperature sensor can be positioned close to one of the two adjacent battery cells 12 to detect the temperature of the corresponding individual battery cell 12.

[0059] Among them, the temperature sensor located on the acquisition connector 32 connected to the second electrical connector 14 collects the temperature data of the outermost single cell unit 12 of the cell assembly 1.

[0060] In some embodiments, please refer to Figure 4 The mounting bracket 11 is provided with a drain hole 111, which is positioned opposite to the pressure relief valve of the battery cell unit 12. The acquisition component 3 is spaced apart from the drain hole 111. By separating the drain hole 111 from the acquisition component 3, the problem of the acquisition component 3 blocking the drain hole 111 is improved, as is the problem of the electrolyte flowing out of the drain hole 111 dissolving the acquisition component 3 is also improved. Optionally, the acquisition harness 31 is provided with a through hole, which corresponds to the drain hole 111, so that the acquisition component 3 is spaced apart from the drain hole 111.

[0061] In some embodiments, please refer to Figure 1 The battery module 100 includes at least two sets of battery cell components 1 and at least two acquisition components 3. Each set of battery cell components 1 includes a first battery cell component 1a and a second battery cell component 1b. Each acquisition component 3 is used to acquire the operating data of the first battery cell component 1a and the second battery cell component 1b in each set of battery cell components 1. Therefore, when the number of battery cell components 1 is greater than two, the battery cell components 1 can be divided into multiple groups and electrically connected to the battery management unit 2 through different acquisition components 3. Thus, when the number of battery cell components 1 is greater than two, by grouping the battery cell components 1, the electrical connection between each battery cell component 1 and the battery management unit 2 can also be achieved.

[0062] In some embodiments, the battery cell assembly 1 includes at least three battery cell assemblies 1, and the acquisition assembly 3 includes at least three acquisition harnesses 31, including a third acquisition harness 31 (not shown). The third acquisition harness 31 is used to electrically connect the first acquisition harness 31a and the second acquisition harness 31b. For example, both ends of the third acquisition harness 31 are provided with electrical connectors, which are used to electrically connect to the second electrical connector 312 and the third electrical connector 313, respectively, thereby electrically connecting the first acquisition harness 31a and the second acquisition harness 31b. Of the at least three battery cell assemblies 1, two are the first battery cell assembly 1a and the second battery cell assembly 1b, and the others are the third battery cell assembly 1 (not shown). The battery management unit 2 is used to acquire the operating data of the third battery cell assembly 1 through the third acquisition harness 31.

[0063] In some embodiments, please refer to Figure 1 In each group of battery cell components 1, two battery cell components 1 are arranged at intervals along a first direction X; multiple groups of battery cell components 1 are arranged along a second direction Y, which is perpendicular to the first direction X. By making the arrangement direction of the multiple groups of battery cell components 1 perpendicular to the arrangement direction of the battery cell components 1 in each group of battery cell components 1, the multiple battery cell components 1 in the multiple groups of battery cell components 1 are arranged in a matrix, making the arrangement of multiple battery cell components 1 more compact and improving the energy density of the battery module 100. Furthermore, the first battery cell components 1a in the multiple groups of battery cell components 1 are arranged in a straight line, which facilitates the electrical connection between the battery management unit 2 and multiple first acquisition harnesses 31a.

[0064] In some embodiments, please refer to Figure 1 The battery management unit 2 is located on the side of the first cell assembly 1a opposite to the second cell assembly 1b. It is understood that the first electrical connector 311 is adjacent to the side of the first cell assembly 1a opposite to the second cell assembly 1b. By placing the battery management unit 2 on the side of the first cell assembly 1a opposite to the second cell assembly 1b, the distance between the battery management unit 2 and the first electrical connector 311 can be shortened, which helps to reduce the length of the cable used to electrically connect the battery management unit 2 and the first electrical connector 311.

[0065] In some embodiments, please refer to Figure 1The battery module 100 also includes a heat exchange plate 4 and a top cover 5, which together form a receiving cavity. The battery cell assembly 1, the battery management unit 2, and the data acquisition component 3 are all disposed within the receiving cavity. The receiving cavity formed by the heat exchange plate 4 and the top cover 5 is used to house and protect the battery cell assembly 1, the battery management unit 2, and the data acquisition component 3. The heat exchange plate 4 is used to exchange heat with the battery cell assembly 1, for example, to cool the battery cell assembly 1 and improve the problem of overheating of the battery cell assembly 1; or to heat the battery cell assembly 1 and improve the problem of reduced charging speed caused by low temperature of the battery cell assembly 1. Optionally, the heat exchange plate 4 is a water-cooled plate. Optionally, the top cover 5 is made of metal and is detachably connected to the heat exchange plate 4.

[0066] In some embodiments, please refer to Figure 1 The first electrical connector 311 includes a first sub-electrical connector 3111 and a second sub-electrical connector 3112, with the second sub-electrical connector 3112 electrically connected to the second electrical connector 3112. Thus, the operating data of the first battery cell assembly 1a and the second battery cell assembly 1b are transmitted to the battery management unit 2 via the first sub-electrical connector 3111 and the second sub-electrical connector 3112, respectively. This improves the stability of the data acquisition component 3. For example, in the aforementioned embodiment, when the electrical connection between the first electrical connector 311 and the battery management unit 2 is abnormal, the battery management unit 2 cannot simultaneously acquire the operating data of both the first battery cell assembly 1a and the second battery cell assembly 1b. However, in this embodiment, even when the electrical connection between one of the first sub-electrical connectors 3111 and the second electrical connector 3112 and the battery management unit 2 is abnormal, the battery management unit 2 can still acquire the operating data of either the first battery cell assembly 1a or the second battery cell assembly 1b.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery module, characterized in that, include: At least two battery cell assemblies, wherein the at least two battery cell assemblies include a first battery cell assembly and a second battery cell assembly; The data acquisition component includes at least two data acquisition harnesses, the at least two data acquisition harnesses including a first data acquisition harness and a second data acquisition harness. The first data acquisition harness has a first electrical connector and a second electrical connector at its two ends, and the second data acquisition harness has a third electrical connector. The first electrical connector is electrically connected to the battery management unit, and the second electrical connector is electrically connected to the third electrical connector. The battery management unit is used to collect the operating data of the first battery cell assembly through the first acquisition harness, and to collect the operating data of the second battery cell assembly through the second acquisition harness.

2. The battery module according to claim 1, characterized in that, The second electrical connector is plugged into and connected to the third electrical connector; And / or, the first electrical connector is electrically connected to the battery management unit via a cable.

3. The battery module according to claim 1, characterized in that, The battery cell assembly includes a mounting frame, multiple battery cell units, and multiple first electrical connectors. The mounting frame is disposed on the multiple battery cell units, and the first electrical connectors are disposed on the mounting frame. The first electrical connectors are used to connect two battery cell units in series. The first data acquisition harness is disposed on the mounting bracket of the first battery cell assembly, and the second data acquisition harness is disposed on the mounting bracket of the first battery cell assembly; The acquisition component includes an acquisition connector that electrically connects the first electrical connector to the acquisition harness.

4. The battery module according to claim 3, characterized in that, The acquisition component also includes a temperature sensor, which is located on the acquisition connector.

5. The battery module according to claim 3, characterized in that, The mounting bracket is provided with a vent hole, which is positioned opposite to the pressure relief valve of the battery cell unit, and the acquisition component is spaced apart from the vent hole.

6. The battery module according to claim 1, characterized in that, The battery module includes at least two sets of battery cell components and at least two acquisition components. Each set of battery cell components includes a first battery cell component and a second battery cell component. Each acquisition component is used to acquire the working data of the first battery cell component and the second battery cell component in each set of battery cell components.

7. The battery module according to claim 6, characterized in that, In each group of the battery cell assemblies, two battery cell assemblies are arranged at intervals along a first direction; Multiple sets of the battery cell assemblies are arranged along a second direction, which is perpendicular to the first direction.

8. The battery module according to claim 7, characterized in that, The battery management unit is located on the side of the first cell assembly that is away from the second cell assembly.

9. The battery module according to claim 1, characterized in that, The battery module also includes a heat exchange plate and a top cover, which together form a cavity. The battery cell assembly, the battery management unit, and the acquisition assembly are all disposed within the cavity.

10. The battery module according to any one of claims 1 to 9, characterized in that, The first electrical connector includes a first sub-electrical connector and a second sub-electrical connector, and the second sub-electrical connector is electrically connected to the second electrical connector.

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