Fixing support of low-voltage plug-in and battery module with fixing support

By designing the fixing bracket of the low-voltage plug-in, the problem of low-voltage plug-in shaking during the assembly and packing of the battery module is solved, and the stable assembly of the battery module and the protection of the flexible circuit board are achieved.

CN222380716UActive Publication Date: 2025-01-21SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202420201016.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-26
Publication Date
2025-01-21
Estimated Expiration
2034-01-26

AI Technical Summary

Technical Problem

During the assembly and boxing process of existing battery modules, low-voltage plug-ins are prone to shake, affecting the assembly quality and may damage the flexible circuit board.

Method used

A fixing bracket for a low-voltage plug-in is designed, which includes a fixing plate and a supporting plate. The fixing plate is provided with a fixing part for connecting to the busbar assembly, and the supporting plate is provided with a connecting part for fixing the low-voltage plug-in.

Benefits of technology

The low-voltage plug-in is fixed on the connection part of the support plate through the fixing bracket, which facilitates fixation with the bus assembly, improves the assembly efficiency of the battery module, and protects the flexible circuit board from damage.

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Abstract

The utility model provides a low-voltage plug-in fixed support and a battery module with the same, the battery module comprises a busbar assembly and a sampling assembly, the sampling assembly comprises a flexible circuit board and a low-voltage plug-in connected with the flexible circuit board, the fixed support comprises a fixed plate, a fixed plate, a fixed plate and a fixed plate, the fixed plate is connected with the busbar assembly, and the sampling assembly is connected with the low-voltage plug-in. A fixing part connected with the busbar assembly is formed on the fixing plate; and the supporting plate is connected with the fixing plate, and a connecting part used for fixing the low-voltage plug-in is arranged on the supporting plate. According to the fixing support of the low-voltage plug-in unit, the connecting part is arranged on the supporting plate, and the low-voltage plug-in unit can be fixed on the connecting part of the supporting plate, so that the low-voltage plug-in unit and a busbar assembly can be fixed conveniently, a battery module can be assembled conveniently, meanwhile, a flexible circuit board can be protected, and the battery module can be put into a box without damage.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery module assembly manufacturing, in particular to a fixing bracket of a low-voltage plug-in and a battery module having the same. Background Art

[0002] In the existing battery module solution, when the battery module is assembled or the battery module is put into the box, the low-voltage plug-in is usually randomly bonded to the battery cell or not fixed to other structures, which will cause the low-voltage plug-in to shake and affect the assembly of the battery module. In addition, the shaking of the low-voltage plug-in will damage the flexible circuit board, causing damage to the flexible circuit board. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a fixing bracket of a low-voltage plug-in, which can fix the low-voltage plug-in and the busbar assembly.

[0004] The utility model also provides a battery module with a fixing bracket of the low-voltage plug-in.

[0005] According to the fixing bracket of the low-voltage plug-in according to the embodiment of the utility model, it is used for a battery module, the battery module includes a bus assembly and a sampling assembly, the sampling assembly includes a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board, the fixing bracket includes: a fixing plate, a fixing portion for connecting to the bus assembly is formed on the fixing plate; a support plate, the support plate is connected to the fixing plate, and a connecting portion for fixing the low-voltage plug-in is provided on the support plate.

[0006] According to the fixing bracket of the low-voltage plug-in of the utility model, a connecting portion is provided on the support plate, and the low-voltage plug-in can be fixed on the connecting portion of the support plate, thereby facilitating the fixation of the low-voltage plug-in and the bus assembly, and further facilitating the assembly of the battery module. At the same time, the flexible circuit board can be protected, so that the battery module can be placed in the box without damage.

[0007] According to some embodiments of the present invention, a riveting column is formed on the fixing portion, and the fixing portion is configured to be riveted to the busbar assembly through the riveting column.

[0008] According to some embodiments of the present invention, the connecting portion is formed as a slot suitable for holding the low-voltage plug-in.

[0009] According to some optional embodiments of the utility model, a limiting protrusion is provided on the side wall of the slot and is spaced apart from the bottom wall of the slot, and the limiting protrusion is suitable for limiting the low-voltage plug-in between the limiting protrusion and the bottom wall of the slot.

[0010] According to some optional embodiments of the present utility model, the limiting protrusion extends along the length direction of the slot, and the surface of the limiting protrusion protruding from the side wall of the slot is a raised arc surface.

[0011] According to some embodiments of the utility model, the support plate includes: a first plate segment, which extends along a first direction and is rectangular; a second plate segment, which is connected to one end of the first plate segment in the first direction, and in the direction from the first plate segment toward the second plate segment, the width of the second plate segment in the second direction gradually increases, and the connecting portion is formed at one end of the second plate segment away from the first plate segment.

[0012] According to some optional embodiments of the present invention, the support plate further includes: a folded edge, the folded edge is connected to both ends of the second plate segment in the second direction, and the second plate segment cooperates with the two folded edges to form the slot.

[0013] According to some embodiments of the present invention, a weight-reducing hole is formed on at least one of the first plate segment and the second plate segment, and the weight-reducing hole penetrates the support plate along the thickness direction of the support plate.

[0014] According to some embodiments of the utility model, the fixing plate and the supporting plate are arranged along a first direction and connected by a plurality of connecting ribs, a plurality of the connecting ribs are arranged at intervals along a second direction, and at least a portion of each of the connecting ribs is formed as a structural weak area.

[0015] According to the battery module of the embodiment of the second aspect of the utility model, it includes: a plurality of battery cells; a bus assembly, the bus assembly includes a bus, the bus connects two adjacent battery cells; a sampling assembly, including a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board; a fixing bracket of the low-voltage plug-in according to the first aspect of the utility model, the fixing portion of the fixing bracket is fixedly connected to the bus, and the low-voltage plug-in is detachably connected to the connecting portion of the fixing bracket.

[0016] According to the battery module of the utility model, by setting the fixing bracket of the low-voltage plug-in of the first embodiment, a connecting portion is set on the support plate, and the low-voltage plug-in can be fixed on the connecting portion of the support plate, thereby facilitating the fixing of the low-voltage plug-in and the bus assembly, and then facilitating the assembly of the battery module, and at the same time, protecting the flexible circuit board, so that the battery module can be put into the box without damage. In addition, the low-voltage plug-in and the fixing bracket are detachably connected, so that the support plate and the fixing plate can be separated conveniently, avoiding interference between the fixing bracket and other components.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a first angle of a fixing bracket of a low-voltage plug-in according to an embodiment of the first aspect of the utility model;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 yes Figure 1 A schematic diagram of a second angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0021] Figure 4 yes Figure 2 A schematic diagram of a third angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0022] Figure 5 yes Figure 2 A schematic diagram of a fourth angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0023] Figure 6 yes Figure 2 A schematic diagram of a fifth angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0024] Figure 7 yes Figure 2 A schematic diagram of a sixth angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0025] Figure 8 yes Figure 2 Schematic diagram of the seventh angle of the fixing bracket of the low-voltage plug-in shown in FIG.

[0026] Reference numerals:

[0027] 100. Fixing bracket;

[0028] 10. Fixing plate; 11. Riveting column;

[0029] 20. Support plate; 21. First plate section; 22. Second plate section; 23. Folding edge; 231. Limiting protrusion; 24. Connecting rib; 241. Structural weak area; 25. Slot; 26. Weight reduction hole. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Please refer to the following Figure 1-Figure 8 A fixing bracket of a low-voltage plug-in according to an embodiment of the utility model is described.

[0032] Reference Figure 1 and Figure 2 According to the fixing bracket of the low-voltage plug-in of the embodiment of the utility model, the battery module includes a bus assembly (not shown in the figure) and a sampling assembly (not shown in the figure), the sampling assembly includes a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board, and the fixing bracket includes: a fixing plate and a support plate.

[0033] Specifically, a fixing portion for connecting with the busbar assembly is formed on the fixing plate; the support plate is connected to the fixing plate, and a connecting portion for fixing the low-voltage plug-in is provided on the support plate.

[0034] For example, Figure 1 As shown, one end of the flexible circuit board is connected to the bus assembly, the bus assembly is connected to the battery cell, the other end of the flexible circuit board is connected to the low-voltage plug-in, the rear end of the fixed bracket is provided with a fixing portion, the fixing portion is connected to the bus assembly, and the front end of the fixed bracket is provided with a connecting portion, which is connected to the low-voltage plug-in.

[0035] The fixing bracket of the low-voltage plug-in of the utility model is provided with a connection part on the support plate. When installing the busbar assembly and putting the battery module into the box, the low-voltage plug-in can be fixed on the connection part of the support plate. Compared with the solution in the prior art that no fixing bracket is provided so that the low-voltage plug-in cannot be fixed or is randomly bonded to the battery cell, the fixing bracket of this embodiment can provide a fixed position for the low-voltage plug-in, thereby facilitating the fixing of the low-voltage plug-in and the flexible circuit board. In the process of assembling the battery module and putting the battery module into the box, there is no need to pay attention to whether the position of the low-voltage plug-in affects the assembly of the battery module, thereby facilitating the assembly of the battery module. In addition, the low-voltage plug-in is fixed on the connection part, which can prevent the low-voltage plug-in from shaking and tearing the flexible circuit board, thereby protecting the flexible circuit board and avoiding damage to the flexible circuit board, and then the battery module can be put into the box without damage.

[0036] According to the fixing bracket of the low-voltage plug-in in the embodiment of the utility model, a connecting portion is provided on the support plate, and the low-voltage plug-in can be fixed on the connecting portion of the support plate, thereby facilitating the fixation of the low-voltage plug-in and the bus assembly, and further facilitating the assembly of the battery module. At the same time, the flexible circuit board can be protected, so that the battery module can be placed in the box without damage.

[0037] According to some embodiments of the present invention, referring to Figure 1 and Figure 3 A riveting column is formed on the fixing portion, and the fixing portion is configured to be riveted to the busbar assembly through the riveting column. Thus, the riveting connection can ensure the connection strength between the fixing plate and the busbar assembly, thereby ensuring the connection strength between the fixing bracket and the busbar assembly, and further ensuring the fixing strength between the low-voltage plug-in and the busbar assembly.

[0038] For example, Figure 1 and Figure 3 As shown, two riveted columns are formed on the fixing portion, and the two riveted columns are arranged at intervals along the front-to-back direction on the lower side of the fixing plate.

[0039] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The connection part is formed into a slot suitable for holding the low-voltage plug-in. Thus, the connection form of the holding connection is simple, which is convenient for connecting the low-voltage plug-in with the support plate. At the same time, the slot can facilitate the connection between the low-voltage plug-in and the connection part, thereby saving the connection time between the low-voltage plug-in and the connection part and improving the connection efficiency.

[0040] According to some optional embodiments of the present invention, referring to Figure 1 , Figure 2 , Figure 7 and Figure 8 The side wall of the card slot is provided with a limiting protrusion spaced apart from the bottom wall of the card slot, and the limiting protrusion is suitable for limiting the low-voltage plug-in between the limiting protrusion and the bottom wall of the card slot. Thus, the limiting protrusion can prevent the low-voltage plug-in from detaching from the card slot, thereby ensuring the connection stability between the low-voltage plug-in and the connecting part.

[0041] According to some embodiments of the present invention, referring to Figure 1 , Figure 2 , Figure 7 and Figure 8 The limiting protrusion is along the length direction of the card slot (such as Figure 2 The limiting protrusion extends in the front-to-back direction of the card slot shown in the figure, and the surface of the limiting protrusion protruding from the side wall of the card slot is a raised arc surface. Therefore, the extending direction of the limiting protrusion is the same as the extending direction of the card slot, and the limiting protrusion can limit the low-voltage plug-in in the card slot, thereby ensuring the limiting effect of the limiting protrusion on the low-voltage plug-in. At the same time, the limiting protrusion is formed into an arc surface, so that the low-voltage plug-in can be easily inserted into the card slot.

[0042] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 4 The support plate includes: a first plate segment and a second plate segment. The first plate segment is along a first direction (such as Figure 1The second plate segment is connected to one end of the first plate segment in the first direction (as shown in the front and rear directions) and is rectangular; Figure 1 The front end of the first plate segment shown in FIG. 1 is a front end of the first plate segment shown in FIG. 1 , and in the direction from the first plate segment toward the second plate segment, the second plate segment is in the second direction (such as Figure 1 The width of the second plate segment gradually increases in the up-down direction as shown, and the connecting portion is formed at one end of the second plate segment away from the first plate segment (such as Figure 1 The front end of the second plate section shown).

[0043] In this way, the first plate segment can be connected to the fixed plate, thereby facilitating the connection between the fixed plate and the support plate. The connecting portion of the second plate segment is arranged at an end away from the first plate segment, thereby facilitating the connection between the low-voltage plug-in and the support plate. At the same time, the width of the second plate segment gradually increases, thereby gradually increasing the strength of the support plate and avoiding damage to the support plate.

[0044] For example, Figure 1 , Figure 3 and Figure 4 The first plate segment is a rectangular plate extending in the front-to-back direction, the second plate segment is connected to the front side of the first plate segment, and the width of the second plate segment in the up-down direction gradually increases from the back to the front, and the connecting portion is formed at the front end of the second plate segment.

[0045] According to some optional embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 4 The support plate further comprises: a folded edge connected to the second plate segment in the second direction (such as Figure 1 The two ends of the up and down direction shown in Figure 1 The upper and lower ends of the second plate segment shown in the figure) are formed by the second plate segment and the two folded edges forming a slot. Thus, the second plate segment and the two folded edges form a slot, and no additional slot is required, thereby reducing the processing steps. At the same time, the two folded edges can limit the low-voltage plug-in in the second direction, thereby effectively preventing the low-voltage plug-in from being separated from the slot.

[0046] For example, Figure 1 , Figure 3 and Figure 4 As shown, the folded edge is connected to the upper and lower ends of the second plate segment, the folded edge extends in the left-right direction, the right end of the folded edge is connected to the second plate segment, the left end of the folded edge extends to the left and a limiting protrusion is provided at the left end of the folded edge, the limiting protrusion of the folded edge on the upper side protrudes downward, and the limiting protrusion of the folded edge on the lower side protrudes upward, and the two folded edges and the second plate segment form a slot.

[0047] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 4At least one of the first plate segment and the second plate segment is formed with a weight-reducing hole, that is, the first plate segment may be formed with a weight-reducing hole, the second plate segment may be formed with a weight-reducing hole, or both the first plate segment and the second plate segment may be provided with a weight-reducing hole, and the weight-reducing hole is formed along the thickness direction of the support plate (such as Figure 1 Thus, the weight-reducing hole can reduce the weight of the support plate, thereby reducing the weight of the fixing bracket and facilitating the installation of the fixing bracket.

[0048] For example, Figure 1 , Figure 3 and Figure 4 As shown, one weight-reducing hole is formed on the first plate, and two weight-reducing holes are formed on the second plate.

[0049] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 4 The fixing plate and the supporting plate are arranged along a first direction (such as Figure 1 That is, the fixing plate and the support plate are arranged along the first direction and connected by two, three or four or more connecting ribs, and the multiple connecting ribs are arranged along the second direction (such as Figure 1 In the upper and lower directions shown in the figure, the connecting ribs are arranged at intervals, and at least a portion of each connecting rib is formed as a structural weak area. That is to say, a portion of each connecting rib can be formed as a structural weak area, or all of each connecting rib can be formed as a structural weak area.

[0050] In this way, the connecting ribs can connect the fixing plate and the support plate, so that the fixing bracket can be formed into a whole. At the same time, the connecting ribs form a structural weak area, which is convenient for breaking the connecting ribs, so that the support plate and the fixing plate can be separated. After the battery module is put into the box, the low-voltage plug-in is first removed from the support plate, and then the connecting ribs are broken, and the use of the fixing bracket is completed.

[0051] For example, Figure 1 , Figure 3 and Figure 4 As shown, the fixing plate and the supporting plate are arranged along the front-to-back direction and connected by four connecting ribs. The four connecting ribs are arranged at intervals along the up-down direction, and the four connecting ribs are formed into structural weak areas.

[0052] According to the battery module of the second embodiment of the utility model, Figure 1 and Figure 2, including: a plurality of battery cells, a bus assembly, a sampling assembly and a fixing bracket of the low-voltage plug-in of the first aspect of this embodiment. The bus assembly includes a bus, which connects two adjacent battery cells; the sampling assembly includes a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board; the fixing portion of the fixing bracket is fixedly connected to the bus, and the low-voltage plug-in is detachably connected to the connecting portion of the fixing bracket.

[0053] The busbar can electrically connect adjacent battery cells, the flexible circuit board can collect signals such as current and voltage of the battery cells, and the low-voltage plug-in can collect the signal information of the battery cells collected by the flexible circuit board.

[0054] According to the battery module of the embodiment of the utility model, by setting the fixing bracket of the low-voltage plug-in of the first embodiment, a connecting portion is set on the support plate, and the low-voltage plug-in can be fixed on the connecting portion of the support plate, thereby facilitating the fixing of the low-voltage plug-in and the bus assembly, and then facilitating the assembly of the battery module, and at the same time, protecting the flexible circuit board, so that the battery module can be put into the box without damage. In addition, the low-voltage plug-in and the fixing bracket are detachably connected, so that the support plate and the fixing plate can be separated conveniently, avoiding interference between the fixing bracket and other components.

[0055] Reference below Figure 1-Figure 8 A battery module according to an embodiment of the present invention is described.

[0056] According to the battery module of the embodiment of the utility model, the battery module includes: a plurality of battery cells, a bus bar, a sampling assembly and a fixed bracket. The bus bar connects two adjacent battery cells, the sampling assembly includes a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board, the bus bar is connected to one end of the fixed bracket, and the low-voltage plug-in is detachably connected to the other end of the fixed bracket.

[0057] like Figure 1 As shown, the fixing bracket includes: a fixing plate and a supporting plate. Specifically, the fixing plate is a rectangular plate extending in the front-to-back direction, a fixing portion is formed on the lower side of the fixing plate, the fixing portion is formed into two riveted columns, the two riveted columns are arranged at intervals in the front-to-back direction, and the supporting plate is connected to the front side of the fixing plate.

[0058] The support plate includes: a first plate segment, a second plate segment, a folding edge and a connecting rib. Specifically, the first plate segment is a rectangular plate extending in the front-to-back direction, the second plate segment is connected to the front side of the first plate segment, and a connecting rib extending in the front-to-back direction is connected between the first plate segment and the second plate segment, and four connecting ribs are provided, and the four connecting ribs are arranged at intervals in the up-down direction. In the direction from the back to the front, the width of the second plate segment in the up-down direction gradually increases, the folding edge is connected to the upper and lower ends of the front end of the second plate segment, the folding edge extends in the left-right direction, the right end of the folding edge is connected to the second plate segment, and the left end of the folding edge extends to the left. The two folding edges and the second plate segment form a clamping groove extending in the front-to-back direction, and the left end of the folding edge is connected to a limiting protrusion, and the limiting protrusion of the folding edge provided on the upper side of the second plate segment protrudes downward in an arc shape, and the limiting protrusion of the folding edge provided on the lower side of the second plate segment protrudes upward in an arc shape. A weight-reducing hole is provided on the first plate segment, and two weight-reducing holes are provided on the second plate segment, and the connecting rib forms a structural weak area.

[0059] When using the fixing bracket, first connect the adjacent battery cells with the busbar, then glue the low-voltage plug-in to the flexible circuit board, then fix the fixing plate to the busbar through hot riveting columns, and then clamp the end of the flexible circuit board connected to the low-voltage plug-in into the card slot, then put multiple battery cells into the box as a whole, then take the flexible circuit board out of the card slot, and fix the low-voltage plug-in on the box body, finally, break the connecting ribs, separate the support plate and the fixing plate, at this time, the use of the fixing bracket is completed.

[0060] The battery module of this embodiment is provided with a fixing bracket of the low-voltage plug-in of the first embodiment, and a connecting portion is provided on the support plate, so that the low-voltage plug-in can be fixed on the connecting portion of the support plate, thereby facilitating the fixing of the low-voltage plug-in and the bus assembly, and further facilitating the assembly of the battery module, and at the same time, protecting the flexible circuit board, so that the battery module can be placed in the box without damage. In addition, the low-voltage plug-in and the fixing bracket are detachably connected, so that the support plate and the fixing plate can be separated conveniently, and interference between the fixing bracket and other components can be avoided.

[0061] In the description of the present invention, 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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 utility model. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fixing bracket of a low-voltage plug-in, used for a battery module, wherein the battery module comprises a bus assembly and a sampling assembly, wherein the sampling assembly comprises a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board, characterized in that: The fixing bracket comprises: A fixing plate, wherein a fixing portion for connecting to the busbar assembly is formed on the fixing plate; A support plate is connected to the fixing plate, and a connecting portion for fixing the low-voltage plug-in is provided on the support plate.

2. The fixing bracket of the low-voltage plug-in according to claim 1, characterized in that: A riveting column is formed on the fixing portion, and the fixing portion is configured to be riveted to the busbar assembly through the riveting column.

3. The fixing bracket of the low-voltage plug-in according to claim 1, characterized in that: The connecting portion is formed as a slot suitable for clamping the low-voltage plug-in unit.

4. The fixing bracket of the low-voltage plug-in according to claim 3, characterized in that: A limiting protrusion is arranged on the side wall of the card slot and is spaced apart from the bottom wall of the card slot. The limiting protrusion is suitable for limiting the low-voltage plug-in between the limiting protrusion and the bottom wall of the card slot.

5. The fixing bracket of the low-voltage plug-in according to claim 4, characterized in that: The limiting protrusion extends along the length direction of the slot, and the surface of the limiting protrusion protruding from the side wall of the slot is a raised arc surface.

6. The fixing bracket of the low-voltage plug-in according to claim 3, characterized in that: The support plate comprises: A first plate segment, the first plate segment extends along a first direction and is rectangular; A second plate segment, wherein the second plate segment is connected to one end of the first plate segment in the first direction, and the width of the second plate segment in the second direction gradually increases in the direction from the first plate segment toward the second plate segment, and the connecting portion is formed at one end of the second plate segment away from the first plate segment.

7. The fixing bracket of the low-voltage plug-in according to claim 6, characterized in that: The support plate further includes: folded edges, the folded edges are connected to two ends of the second plate segment in the second direction, and the second plate segment cooperates with the two folded edges to form the slot.

8. The fixing bracket of the low-voltage plug-in according to claim 6, characterized in that: A weight-reducing hole is formed on at least one of the first plate segment and the second plate segment, and the weight-reducing hole penetrates the support plate along the thickness direction of the support plate.

9. The fixing bracket of the low-voltage plug-in according to any one of claims 1 to 8, characterized in that: The fixing plate and the supporting plate are arranged along a first direction and connected via a plurality of connecting ribs. The plurality of connecting ribs are arranged at intervals along a second direction, and at least a portion of each of the connecting ribs is formed as a structural weak area.

10. A battery module, characterized in that: include: Multiple battery cells; A bus assembly, the bus assembly comprising a bus, the bus connecting two adjacent battery cells; A sampling assembly, including a flexible circuit board and a low-voltage plug-in connected to the flexible circuit board; According to the fixing bracket of the low-voltage plug-in according to any one of claims 1 to 9, the fixing portion of the fixing bracket is fixedly connected to the bus bar, and the low-voltage plug-in and the connecting portion of the fixing bracket are detachably connected.