Electrical connection module and battery pack

Abstract

The application relates to the technical field of electric vehicles, in particular to an electric connection module and a battery pack. The electric connection module comprises a CCS assembly, a BMS slave board and an insulating elastic piece; the CCS assembly has a thickness direction, the BMS slave board is arranged on one side of the CCS assembly in the thickness direction, and the insulating elastic piece is bonded between the BMS slave board and the CCS assembly; the CCS assembly comprises a first interface, the BMS slave board comprises a second interface, and the first interface is docked with the second interface. According to the electric connection module and the battery pack, the problem that the BMS slave board and the CCS assembly are firmly riveted, the riveting column is damaged after disassembly and cannot be fixed again, and a plurality of riveting holes need to be formed on the BMS slave board to affect the arrangement of the BMS slave board lines in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and in particular to an electrical connection module and battery pack. Background Technology

[0002] With rising living standards and increasing environmental awareness, the demand for electric vehicles is growing, as is the requirement for their driving range. This has led to heightened attention on the production, use, and maintenance of battery packs. Consequently, there are stringent performance requirements for the convenient, safe, and stable operation of the various components within the battery pack.

[0003] Currently, to reduce the space occupied by the BMS slave board within the entire battery pack (BMS slave board, i.e., the battery management system slave board) and to reduce the use of wiring harnesses throughout the pack, the BMS slave board (CCS module, i.e., the cell connection system module) is generally integrated onto the blade cell CCS module. The existing method for integrating the BMS slave board onto the blade cell CCS module involves directly heat-riveting the BMS slave board to the CCS module. Cell voltage and temperature are collected via the FPC on the CCS module, and the FPC connectors are inserted into the connectors on the BMS slave board.

[0004] However, although the above solution can collect cell voltage and temperature, the BMS slave board and CCS assembly are already firmly riveted together by heat. After disassembly, the heat-riveting posts are damaged and cannot be fixed again. In addition, several heat-riveting holes need to be opened on the BMS slave board, which affects the circuit layout of the BMS slave board. Utility Model Content

[0005] The purpose of this application is to provide an electrical connection module and battery pack, thereby solving the problems in the existing solution of integrating BMS slave board on blade cell CCS assembly, where the BMS slave board and CCS assembly are firmly riveted together by heat, the heat riveting posts are damaged after disassembly and cannot be fixed again, and several heat riveting holes need to be opened on the BMS slave board, which affects the wiring layout of the BMS slave board.

[0006] According to a first aspect of this application, an electrical connection module is provided, the electrical connection module including a CCS assembly, a BMS slave board, and an insulating elastic element; the CCS assembly has a thickness direction, the BMS slave board is disposed on one side of the CCS assembly in the thickness direction, and the insulating elastic element is bonded between the BMS slave board and the CCS assembly; the CCS assembly includes a first interface, the BMS slave board includes a second interface, and the first interface is mated with the second interface.

[0007] In any of the above technical solutions, the insulating elastic element is further press-fitted between the BMS slave plate and the CCS assembly.

[0008] In any of the above technical solutions, the CCS assembly further includes a length direction perpendicular to the thickness direction; the CCS assembly also includes a CCS bracket and a circuit board; the CCS bracket includes a plurality of electrical connecting pieces disposed facing the BMS slave board, the plurality of electrical connecting pieces being spaced apart along the length direction, and the circuit board connecting the plurality of electrical connecting pieces to the first interface; the number of insulating elastic elements is plurality of, the plurality of insulating elastic elements being spaced apart along the length direction, and each insulating elastic element being bonded between the BMS slave board and one of the electrical connecting pieces.

[0009] In any of the above technical solutions, the dimension of the insulating elastic element in the length direction is smaller than the dimension of the electrical connecting piece in the length direction.

[0010] In any of the above technical solutions, the CCS bracket further includes a plurality of support protrusions facing the BMS slave plate; the support protrusions are provided between two adjacent electrical connection pieces to which the insulating elastic element is bonded, and the BMS slave plate abuts against the support protrusions.

[0011] In any of the above technical solutions, the BMS slave board further includes a middle plate portion and two side plate portions disposed on both sides of the middle plate portion; the second interface is disposed on the middle plate portion, and the insulating elastic element is bonded between the side plate portions and the CCS bracket.

[0012] In any of the above technical solutions, the CCS bracket further includes a first snap-fit ​​member facing the BMS slave plate; the electrical connection module further includes two fixing covers, which are respectively disposed at the outer ends of the two side plates and snap-fit ​​with the first snap-fit ​​member; the fixing cover includes a main body, a snap-fit ​​buckle, and a cantilever; the main body has a head end and a tail end facing each other in a predetermined direction; when the fixing cover is in the snap-fit ​​state, the predetermined direction is parallel to the length direction, the head end is disposed close to the side plate relative to the tail end, the snap-fit ​​buckle is disposed on the end face of the head end, the cantilever is disposed on the side of the main body facing away from the CCS bracket, the cantilever protrudes from the head end in a direction away from the tail end, and a pressing surface is provided on the side of the cantilever facing the CCS bracket; the snap-fit ​​buckle can snap-fit ​​with the first snap-fit ​​member so that the pressing surface abuts against the side plate.

[0013] In any of the above technical solutions, the CCS component further includes a width direction perpendicular to both the thickness direction and the length direction; the CCS bracket further includes a second snap-fit ​​member facing the BMS slave plate, the second snap-fit ​​member being spaced apart from the first snap-fit ​​member in the length direction; the CCS bracket further includes a pivot, the tail end of the main body is provided with a pivot extending along the width direction, the pivot is rotatably connected to the second snap-fit ​​member, so that the fixed cover rotates about the pivot about the pivot.

[0014] In any of the above technical solutions, the fixing cover further includes a guide platform. When the fixing cover is in the snap-fit ​​state, the guide platform is disposed on the side of the main body facing away from the CCS bracket. The guide platform and the cantilever form an integral guide eave. The guide eave extends along the length direction. There are two guide eaves. The two guide eaves are respectively disposed on the two opposite sides of the main body in the width direction. The two guide eaves and the main body form a wire harness guide groove.

[0015] According to a second aspect of this application, a battery pack is provided, including the electrical connection module as described above.

[0016] The electrical connection module of this application includes a CCS assembly, a BMS slave board, and an insulating elastic element. The BMS slave board is disposed on one side of the CCS assembly in the thickness direction. The insulating elastic element is bonded between the BMS slave board and the CCS assembly. The CCS assembly includes a first interface, and the BMS slave board includes a second interface; the first interface and the second interface are mated together.

[0017] Based on the above technical features, the beneficial effects of this application are as follows:

[0018] The BMS slave board of this application is located on one side of the CCS assembly in the thickness direction, which can effectively reduce the space occupied by the BMS slave board in the entire package and reduce the amount of wiring harness used. Furthermore, the BMS slave board and the CCS assembly can transmit temperature and voltage signals through a first interface and a second interface. Based on this, an insulating elastic element is bonded between the BMS slave board and the CCS assembly to secure them. Compared with existing technologies, this fixing method not only facilitates disassembly but also does not damage either component or affect the wiring layout of the BMS slave board.

[0019] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure of the electrical connection module according to an embodiment of this application is shown;

[0022] Figure 2 Show Figure 1 Another structural diagram from another perspective;

[0023] Figure 3 Show Figure 1 A schematic diagram of the hidden BMS structure behind the board;

[0024] Figure 4 Show Figure 3 A partially enlarged structural diagram;

[0025] Figure 5 A schematic diagram of the structure of the fixed cover according to an embodiment of this application is shown.

[0026] Icons: 100-CCS assembly; 110-First interface; 120-CCS bracket; 121-Electrical connector; 122-Support protrusion; 123-First snap-fit; 124-Second snap-fit; 130-Flexible circuit board; 200-BMS slave board; 210-Middle plate; 220-Side plate; 230-Third interface; 300-Insulating elastic element; 400-Fixing cover; 410-Main body; 420-Snap-fit ​​buckle; 431-Cantilever; 432-Guide platform; 430-Guide eaves; 440-Rotating shaft; X-Length direction; Y-Width direction; Z-Thickness direction. Detailed Implementation

[0027] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0028] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0029] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0030] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0031] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0032] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0033] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0034] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0035] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0036] The first aspect of this application provides an electrical connection module, thereby solving the problem in the existing solution of integrating a BMS slave board on a blade cell CCS assembly, where the BMS slave board and CCS assembly are already thermally riveted together, and after disassembly, the thermal riveting posts are damaged and cannot be re-fixed, and several thermal riveting holes need to be opened on the BMS slave board, which affects the wiring layout of the BMS slave board.

[0037] The following reference Figures 1 to 5 The electrical connection module described according to some embodiments of this application is further described, and for ease of description, the length direction X, width direction Y and thickness direction Z of the CCS component 100 are described as being perpendicular to each other.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, the electrical connection module of this application includes a CCS assembly 100, a BMS slave board 200, and an insulating elastic element 300. The BMS slave board 200 is disposed on one side of the CCS assembly 100 in the thickness direction Z. The insulating elastic element 300 is bonded between the BMS slave board 200 and the CCS assembly 100. The CCS assembly 100 includes a first interface 110, and the BMS slave board 200 includes a second interface. The first interface 110 and the second interface are connected. It should be noted that both the first interface 110 and the second interface in this application can be connectors. Because the first interface 110 and the second interface overlap when plugged in, the second interface of the BMS slave board 200 is not shown in the figure.

[0039] With this configuration, the BMS slave board 200 is positioned on one side of the CCS assembly 100 in the thickness direction Z, effectively reducing the space occupied by the BMS slave board 200 within the entire package and reducing the amount of wiring harness used. Furthermore, the BMS slave board 200 and the CCS assembly 100 can transmit temperature and voltage signals through the first interface 110 and the second interface. Based on this, the insulating elastic element 300 is bonded between the BMS slave board 200 and the CCS assembly 100, securing them together. Compared to existing technologies, this securing method not only facilitates disassembly but also prevents damage to either component or affects the wiring layout of the BMS slave board. Disassembly simply requires unplugging the first interface 110 and the second interface, and peeling the BMS slave board 200 off from the insulating elastic element 300.

[0040] In the embodiments of this application, preferably, the insulating elastic element 300 is press-fitted between the BMS slave plate 200 and the CCS assembly 100. This arrangement not only provides better vibration damping but also a stronger bond. Furthermore, there are many ways to press-fit the insulating elastic element 300; for example, it can be done through… Figure 1 The retaining cover 400 applies force to the BMS slave plate 200, causing the BMS slave plate 200 and the CCS assembly 100 to compress the insulating elastic element 300. The specific structure of the retaining cover 400 of this application will be described in detail below. In the embodiments of this application, the insulating elastic element 300 is preferably compressed foam.

[0041] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the CCS assembly 100 also includes a CCS bracket 120 and a circuit board. The circuit board in this application is a flexible circuit board 130. The CCS bracket 120 includes a plurality of electrical connection pieces 121 (bar pieces) arranged facing the BMS slave board 200. The plurality of electrical connection pieces 121 are spaced apart along the length direction X. The circuit board connects the plurality of electrical connection pieces 121 to the first interface 110, that is, the circuit board transmits the collected current information and voltage information to the BMS slave board 200 through the first interface 110.

[0042] In addition, to facilitate the fixing and disassembly of the BMS slave board 200, a first interface 110 is provided on the side of the CCS bracket 120 facing the BMS slave board 200, and the first interface 110 is located in the middle of the CCS bracket 120. The BMS slave board 200 includes a middle plate portion 210 and two side plate portions 220 provided on both sides of the middle plate portion 210. A second interface is provided in the middle plate portion 210, and an insulating elastic element 300 is bonded between the side plate portions 220 and the CCS bracket 120. For example, as... Figure 3As shown, there are multiple insulating elastic elements 300, which are spaced apart along the length direction X. Each insulating elastic element 300 is bonded between the BMS slave plate 200 (side plate portion 220) and an electrical connection piece 121. Figure 3 The diagram illustrates the form in which three insulating elastic elements 300 are bonded between each side plate portion 220 and the CCS bracket 120.

[0043] In the embodiments of this application, preferably, the dimension of the insulating elastic element 300 in the length direction X is smaller than the dimension of the electrical connecting piece 121 in the length direction X. This arrangement prevents the same insulating elastic element 300 from adhering to the two electrical connecting pieces 121, and avoids the two connecting pieces from becoming conductive when the insulating elastic element 300 is made of compressed foam and the compressed foam contains moisture.

[0044] In the embodiments of this application, preferably, such as Figure 3 and Figure 4 As shown, the CCS bracket 120 also includes a plurality of support protrusions 122 disposed facing the BMS slave plate 200. A support protrusion 122 is disposed between two adjacent electrical connection pieces 121 to which the insulating elastic element 300 is bonded, and the BMS slave plate 200 abuts against the support protrusion 122. Figure 4 The diagram illustrates the arrangement of three support protrusions 122 between two adjacent electrical connectors 121. This arrangement serves two purposes: firstly, the support protrusions 122 limit the lateral distance of the compressed foam, further preventing the same compressed foam from adhering to two electrical connectors 121; secondly, the support protrusions 122 simultaneously limit the compression thickness of the compressed foam, ensuring a safe distance between the BMS slave plate 200 and the CCS bracket 120 (electrical connector 121).

[0045] The specific structure of the fixed cover 400 of this application will be described in detail below.

[0046] like Figure 3 and Figure 4 As shown, the CCS bracket 120 also includes a first snap-fit ​​member 123 facing the BMS slave board 200, the first snap-fit ​​member 123 being used to snap-fit ​​with the fixing cover 400. Figure 1 and Figure 2 As shown, the electrical connection module includes two fixing covers 400, which are respectively disposed at the outer ends of the two side plate portions 220 and are snapped into the first snap-fit ​​member 123.

[0047] like Figure 2 and Figure 5As shown, the fixing cover 400 includes a main body 410, a snap-fit ​​buckle 420, and a cantilever 431. The main body 410 has a head end and a tail end that are opposite to each other in a predetermined direction. When the fixing cover 400 is in the snap-fit ​​state, the predetermined direction is parallel to the length direction X. Relative to the tail end, the head end is located near the side plate 220. The snap-fit ​​buckle 420 is located on the end face of the head end. The cantilever 431 is located on the side of the main body 410 that is away from the CCS bracket 120. The cantilever 431 protrudes from the head end in a direction away from the tail end, and a pressing surface is provided on the side of the cantilever 431 facing the CCS bracket 120. When the fixing cover 400 is snapped in place, the snap-fit ​​buckle 420 engages with the first snap-fit ​​member 123, so that the pressing surface abuts against the side plate portion 220. That is, the pressing surface of the cantilever 431 presses the side plate portion 220 against the support protrusion 122. At this time, the side plate portion 220 will press against the insulating elastic member 300, thereby fixing the BMS slave plate 200. As an example, there can be two snap-fit ​​buckles 420, and there are also two corresponding first snap-fit ​​members 123. The first snap-fit ​​member 123 can be a protruding snap-fit ​​groove.

[0048] Furthermore, for ease of operation, in the embodiments of this application, such as Figure 3 and Figure 4 As shown, the CCS bracket 120 also includes a second latching member 124 facing the BMS slave board 200, the second latching member 124 being spaced apart from the first latching member 123 in the length direction X. Figure 1 and Figure 5 As shown, the CCS bracket 120 also includes a pivot 440. The main body 410 has a pivot 440 extending along the width direction Y at its tail end. The pivot 440 is rotatably connected to the second snap-fit ​​member 124, allowing the fixed cover 400 to rotate about the pivot 440. As an example, such as... Figure 4 As shown, the second snap-fit ​​component 124 can have two snap-fit ​​through holes, and the rotating shaft 440 is rotatably connected to the two snap-fit ​​through holes. With this configuration, when the fixed cover 400 is snapped in place, the snap-fit ​​buckle 420 can be snapped into the first snap-fit ​​component 123 by rotating the rotating shaft 440.

[0049] Furthermore, in the embodiments of this application, such as Figure 5 As shown, the fixed cover 400 also includes a guide platform 432. When the fixed cover 400 is in the snap-fit ​​state, the guide platform 432 is located on the side of the main body 410 facing away from the CCS bracket 120. The guide platform 432 and the cantilever 431 form an integral guide eave 430. The guide eave 430 extends along the length direction X. There are two guide eaves 430. The two guide eaves 430 are respectively located on the two opposite sides of the main body 410 in the width direction Y. The two guide eaves 430 and the main body 410 form a wire harness guide groove, which allows the wire harness to pass through.

[0050] The process of fixing the BMS from board 200 is as follows:

[0051] Double-sided adhesive-coated compressed foam is attached to the electrical connection piece 121 of the CCS bracket 120. The BMS slave board 200 is then picked up and attached to the compressed foam to pre-fix it. The pivot 440 of the fixing cover 400 is inserted into the second snap-fit ​​member 124. The fixing cover 400 is rotated and pressed down on the BMS slave board 200 to compress the compressed foam until the snap-fit ​​buckle 420 of the fixing cover 400 is engaged in the first snap-fit ​​member 123, thus securing the BMS slave board 200 with pressure. For disassembly, simply open the fixing cover 400, pull out the first interface 110 and the second interface, and peel the BMS slave board 200 off the insulating elastic member 300. Compared with the prior art, the fixing method of this application not only facilitates the disassembly of both components but also does not damage them or affect the wiring layout of the BMS slave board 200.

[0052] Additionally, see Figure 1 and Figure 2 Each side plate 220 of this application is provided with a third interface 230 at its outer end. When the fixing cover 400 is snapped in place, the wire harness guide groove is positioned directly opposite the third interface 230. When the BMS slave board 200 is connected to the BMS main control board through the third interface 230, the wire harnesses of both can pass through the wire harness guide groove, which guides the plugged wire harnesses.

[0053] According to a second aspect of this application, a battery pack is provided, including the electrical connection module as described above.

[0054] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. An electrical connection module, characterized in that, The electrical connection module includes a CCS assembly (100), a BMS slave board (200), and an insulating elastic element (300). The CCS assembly (100) has a thickness direction (Z), the BMS slave plate (200) is disposed on one side of the CCS assembly (100) in the thickness direction (Z), and the insulating elastic element (300) is bonded between the BMS slave plate (200) and the CCS assembly (100). The CCS component (100) includes a first interface (110), and the BMS slave board (200) includes a second interface, wherein the first interface (110) is connected to the second interface.

2. The electrical connection module according to claim 1, characterized in that, The insulating elastic element (300) is press-fitted between the BMS slave plate (200) and the CCS assembly (100).

3. The electrical connection module according to claim 2, characterized in that, The CCS assembly (100) also has a length direction (X) perpendicular to the thickness direction (Z); the CCS assembly (100) further includes a CCS bracket (120) and a circuit board; The CCS bracket (120) includes a plurality of electrical connectors (121) disposed facing the BMS slave board (200), the plurality of electrical connectors (121) being spaced apart along the length direction (X), and the circuit board connecting the plurality of electrical connectors (121) to the first interface (110). The number of the insulating elastic elements (300) is multiple, and the multiple insulating elastic elements (300) are spaced apart along the length direction (X). Each insulating elastic element (300) is bonded between the BMS slave plate (200) and an electrical connection piece (121).

4. The electrical connection module according to claim 3, characterized in that, The dimension of the insulating elastic element (300) in the length direction (X) is smaller than the dimension of the electrical connecting piece (121) in the length direction (X).

5. The electrical connection module according to claim 3, characterized in that, The CCS bracket (120) also includes a plurality of support protrusions (122) facing the BMS slave plate (200). The support protrusion (122) is provided between two adjacent electrical connection pieces (121) to which the insulating elastic element (300) is bonded, and the BMS abuts against the support protrusion (122) from the plate (200).

6. The electrical connection module according to any one of claims 3-5, characterized in that, The BMS slave board (200) includes a middle plate portion (210) and two side plate portions (220) disposed on both sides of the middle plate portion (210). The second interface is disposed on the middle plate (210), and the insulating elastic element (300) is bonded between the side plate (220) and the CCS bracket (120).

7. The electrical connection module according to claim 6, characterized in that, The CCS bracket (120) also includes a first snap-fit ​​(123) facing the BMS slave board (200). The electrical connection module also includes two fixing covers (400), which are respectively disposed at the outer ends of the two side plate portions (220) and are engaged with the first snap-fit ​​member (123); The fixing cover (400) includes a main body (410), a snap fastener (420), and a cantilever (431); the main body (410) has a head end and a tail end that are opposite to each other in a predetermined direction; when the fixing cover (400) is in the snap-fit ​​state, the predetermined direction is parallel to the length direction (X), the head end is located near the side plate (220) relative to the tail end, the snap fastener (420) is located on the end face of the head end, the cantilever (431) is located on the side of the main body (410) facing away from the CCS bracket (120), the cantilever (431) protrudes from the head end in a direction away from the tail end, and the side of the cantilever (431) facing the CCS bracket (120) is provided with a pressing surface; The snap fastener (420) can engage with the first snap fastener (123) so that the pressing surface abuts against the side plate portion (220).

8. The electrical connection module according to claim 7, characterized in that, The CCS component (100) also has a width direction (Y) that is perpendicular to the thickness direction (Z) and the length direction (X), respectively. The CCS bracket (120) further includes a second snap-fit ​​member (124) disposed facing the BMS slave plate (200), the second snap-fit ​​member (124) and the first snap-fit ​​member (123) being spaced apart in the length direction (X); The CCS bracket (120) also includes a pivot (440). The tail end of the main body (410) is provided with a pivot (440) extending along the width direction (Y). The pivot (440) is rotatably connected to the second snap-fit ​​member (124) so ​​that the fixed cover (400) rotates about the pivot (440) as an axis.

9. The electrical connection module according to claim 8, characterized in that, The fixed cover (400) also includes a guide platform (432). When the fixed cover (400) is in the snap-fit ​​state, the guide platform (432) is disposed on the side of the main body (410) opposite to the CCS bracket (120). The guide platform (432) and the cantilever (431) form an integral guide eave (430). The guide eave (430) extends along the length direction (X). There are two guide eaves (430). The two guide eaves (430) are respectively disposed on the two sides of the main body (410) opposite to each other in the width direction (Y). The two guide eaves (430) and the main body (410) form a wire harness guide groove.

10. A battery pack, characterized in that, Includes the electrical connection module as described in any one of claims 1-9.

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