Mounting structure of low-voltage plug-in of battery module, battery module and battery pack

Abstract

The utility model provides a mounting structure of a low-voltage plug-in of a battery module, the battery module and a battery pack. The mounting structure of the low-voltage plug-in of the battery module comprises a busbar bracket, a plurality of low-voltage plug-in units and a plurality of connecting pieces, the plug-in support comprises a support body constructed to be in a plate shape and a plug-in fixing part arranged on the support body, and the support body is fixedly kept on the busbar support; and the low-voltage plug-in unit comprises a plug-in unit body and a plug-in unit reinforcing plate which is fixedly connected with the plug-in unit body and is kept below the plug-in unit body, and the plug-in unit reinforcing plate is clamped and restrained on the plug-in unit bracket by the plug-in unit fixing part. According to the mounting structure of the low-voltage plug-in of the battery module disclosed by the utility model, the plug-in bracket is used as a connecting piece, so that the low-voltage plug-in is stably connected with the busbar bracket, the plug-in bracket can improve the strength of the joint of the low-voltage plug-in and the busbar bracket, and when the strength of the busbar bracket is insufficient, the plug-in bracket has reinforcing and reinforcing effects. And the low-voltage plug-in connector is clamped and fixed with the plug-in reinforcing plate of the low-voltage plug-in, and has the advantage of convenience in disassembly.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery vehicles, and in particular to a mounting structure of a low-voltage plug-in of a battery module. At the same time, the utility model also relates to a battery module provided with the mounting structure of the low-voltage plug-in of the battery module, and a battery pack including the battery module. Background Art

[0002] With the rapid development of new energy vehicles and fierce competition in the industry, cost control has also been greatly enhanced. As a key component in the battery module, the cost of the busbar bracket assembly accounts for a large proportion of the module assembly. The busbar bracket has gradually evolved into a blister process bracket, but the problem of fixing low-voltage plug-ins has emerged. The blister process of lithium battery busbar bracket is a plastic molding process specifically used to manufacture busbar brackets. Blistering is a plastic processing technology, also known as vacuum blistering or thermoforming. Plastic sheets suitable for blistering are usually used, such as ABS, PP, HDPE or resin particles. These materials have good plasticity and molding properties. It heats and softens the plastic sheet, and then uses negative pressure to adsorb it on the mold to form a product of the desired shape. Put the plastic sheet into the blister molding machine and soften it to a temperature suitable for molding by heating. This step is the key to ensure that the sheet can be smoothly adsorbed on the mold surface. The softened plastic sheet is moved just above the mold. The mold is customized according to the shape and size of the busbar bracket. Using the principle of vacuum adsorption, the plastic sheet is tightly fitted to the mold surface to form the desired shape. After molding, the plastic housing needs to be cooled to maintain its shape stability.

[0003] The advantages of the blister process include low material cost: the cost of plastic materials used in the blister process is relatively low, which is suitable for large-scale production. High production efficiency: through automated equipment and assembly line operations, production efficiency can be greatly improved. High product precision: due to the use of molds for molding, the bus bracket has high dimensional accuracy and shape stability. Environmental protection and energy saving: The blister process meets environmental protection requirements and can effectively save energy. However, the blister process also causes the bus bracket to be thin and insufficient in strength. When connecting low-voltage plug-ins, the strength of the connection is insufficient and the connection is unstable. Utility Model Content

[0004] In view of this, the utility model aims to provide a mounting structure for a low-voltage plug-in of a battery module to improve the stability of the connection of the low-voltage plug-in of a busbar bracket.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery module low-voltage plug-in installation structure, characterized in that the structure comprises:

[0007] Busbar bracket;

[0008] The plug-in bracket comprises a bracket body configured in a plate shape and a plug-in fixing portion provided on the bracket body, wherein the bracket body is fixedly held on the busbar bracket;

[0009] The low-voltage plug-in comprises a plug-in body and a plug-in reinforcement plate fixedly connected to the plug-in body and held below the plug-in body. The plug-in reinforcement plate is clamped and constrained on the plug-in bracket by the plug-in fixing portion.

[0010] Furthermore, the plug-in fixing portion includes a limiting rib and two angled limiting grooves, and the two angled limiting grooves can respectively accommodate two corners of the plug-in reinforcement plate, and together with the limiting rib, clamp the plug-in reinforcement plate to achieve fixed constraint on the low-pressure plug-in.

[0011] Furthermore, the bracket body is provided with a positioning column, and correspondingly, the low-voltage plug-in is provided with a positioning hole for the positioning column to pass through.

[0012] Furthermore, the bracket body is provided with a bracket buckle, and correspondingly, the bus bracket is provided with a through hole for the bracket buckle to be engaged.

[0013] Furthermore, the bracket body is fixedly connected to the busbar bracket by means of heat riveting.

[0014] Furthermore, a hollow explosion-proof valve avoidance portion is provided on the bracket body.

[0015] Furthermore, a hollow bar-piece avoidance portion is provided on the bracket body.

[0016] Furthermore, the thickness of the bracket body is 1.3-1.8 mm.

[0017] The utility model also provides a battery module, which has the above-mentioned installation structure of the low-voltage plug-in of the battery module.

[0018] The utility model also provides a battery pack, which includes the above-mentioned battery module.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The installation structure of the low-voltage plug-in of the battery module described in the utility model uses the plug-in bracket as a connector to firmly connect the low-voltage plug-in and the busbar bracket. The plug-in bracket can improve the strength and stability of the connection between the low-voltage plug-in and the busbar bracket. When the strength of the busbar bracket is insufficient, the plug-in bracket has the function of reinforcement and reinforcement. In addition, by being fixed with the plug-in reinforcement plate of the low-voltage plug-in, it also has the advantage of easy disassembly.

[0021] The plug-in fixing part includes a limiting rib and two angled limiting grooves. The two angled limiting grooves can respectively accommodate the two corners of the plug-in reinforcement plate, and clamp the plug-in reinforcement plate together with the limiting rib to achieve fixed constraint on the low-voltage plug-in. The plug-in fixing part is provided with a limiting rib and two angled limiting grooves so that the fixed connection structure is constrained by three points. The rib can abut and limit the plug-in reinforcement plate, and the two angled limiting grooves can limit the plug-in reinforcement plate in the width direction, and together with the rib, limit the sliding of the length defense line. The plug-in fixing part clamps the low-voltage plug-in, and the distribution of the three points constitutes a vertex structure similar to a triangle, which is stable.

[0022] The bracket body is provided with a positioning column, and the low-voltage plug-in is provided with a positioning hole for the positioning column to pass through. The positioning column provided on the bracket body can be matched with the positioning hole on the low-voltage plug-in, which is more convenient and quick during assembly.

[0023] The bracket body is provided with a bracket buckle, and the bus bracket is provided with a through hole for the bracket buckle to be engaged. The bracket buckle provided on the bracket body can cooperate with the through hole on the bus bracket, so that the plug-in bracket and the bus bracket are clamped and fixed, and the clamping installation is convenient and is not easy to cause damage to the structure and material of the bus bracket.

[0024] The bracket body is fixedly connected to the busbar bracket by hot riveting. The hot riveting method is easy to process. Under the action of high temperature and pressure, the hot riveting process can form a strong connection with high strength and durability. The plasticity of the heated rivet is improved and the hardness is reduced, so that the external force required for riveting is small. During the cooling process of the rivet, the contraction of the rivet rod in the length direction can increase the positive pressure of the bracket body and the busbar bracket, thereby improving the riveting strength.

[0025] The bracket body is provided with a hollow explosion-proof valve avoidance portion. Space can be reserved for the explosion-proof valve to prevent the plug-in bracket from conflicting with the explosion-proof valve, which is conducive to the smooth opening of the explosion-proof valve and improves battery safety. In addition, the explosion-proof valve avoidance portion can reduce material weight, save costs, and improve the bending strength of the bracket body, further strengthening the strength of the connection structure.

[0026] The bracket body is provided with a hollowed-out bar-piece avoidance portion. Space can be reserved for the connection between the bar-piece and the battery cell pole, so that the bar-piece and the battery cell pole are electrically connected through the hollowed-out bar-piece avoidance portion. Moreover, the bar-piece avoidance portion can reduce material weight, save costs, and improve the bending strength of the bracket body, further strengthening the strength of the connection structure.

[0027] The thickness of the bracket body is 1.3-1.8 mm. This thickness is in a relatively moderate range, which can ensure the strength of the plug-in bracket on the one hand, and prevent material waste caused by excessive thickening on the other hand.

[0028] In addition, the utility model also proposes a battery module, and the beneficial effects of the battery module are the same as the installation structure of the low-voltage plug-in of the above-mentioned battery module, which will not be described in detail here.

[0029] The utility model further proposes a battery pack, and the beneficial effects of the battery pack are also as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of a plug-in bracket of the installation structure of the low-voltage plug-in of the battery module according to the first embodiment of the utility model at one viewing angle;

[0032] Figure 2 It is a structural schematic diagram of the plug-in bracket of the installation structure of the low-voltage plug-in of the battery module according to the first embodiment of the utility model from another perspective;

[0033] Figure 3 It is a structural schematic diagram of the plug-in bracket of the installation structure of the low-voltage plug-in of the battery module according to the first embodiment of the utility model at another viewing angle;

[0034] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0035] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0036] Figure 6 This is an exploded view of the installation structure of the low-voltage plug-in of the battery module and the assembly of the busbar according to the first embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the assembly structure of the plug-in bracket and the busbar bracket in the installation structure of the low-voltage plug-in of the battery module according to the first embodiment of the utility model;

[0038] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0039] Fig. 9This is a schematic diagram of the assembly structure of the plug-in bracket and the low-voltage plug-in in the installation structure of the low-voltage plug-in of the battery module according to the first embodiment of the utility model;

[0040] Fig.10 for Fig. 9 The enlarged view of point D in the middle;

[0041] Description of reference numerals:

[0042] 1. Plug-in bracket; 2. Low-voltage plug-in; 3. Busbar bracket; 4. Bar;

[0043] 101, bracket body; 102, limiting groove; 103, limiting convex rib; 104, positioning column; 105, bracket buckle; 106, hot riveting column; 107, explosion-proof valve avoidance part; 108, flap avoidance part;

[0044] 201, plug-in body; 202, plug-in reinforcement plate; 2021, positioning hole;

[0045] 301, busbar support body; 302, through hole; 303, hot riveting hole. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0047] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" to "fifth", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Embodiment 1

[0050] A mounting structure for a low-voltage plug-in of a battery module, the structure comprising:

[0051] A busbar bracket 3; a plug-in bracket 1, comprising a bracket body 101 constructed in a plate shape and a plug-in fixing portion provided on the bracket body 101, wherein the bracket body 101 is fixedly held on the busbar bracket 3; a low-voltage plug-in 2, comprising a plug-in body 201 and a plug-in reinforcement plate 202 fixedly connected to the plug-in body 201 and held below the plug-in body 201, wherein the plug-in reinforcement plate 202 is clamped and constrained on the plug-in bracket 1 by the plug-in fixing portion.

[0052] Based on the above overall introduction, an exemplary structure of the plug-in bracket 1 of the installation structure of the battery module low-voltage plug-in described in this embodiment is as follows Figure 1 and Figure 2 As shown in the figure. The installation structure of the low-voltage plug-in of the battery module of the utility model uses the plug-in bracket 1 as a connecting piece to firmly connect the low-voltage plug-in 2 and the busbar bracket 3. Figure 6 The figure shows an exploded view of the installation structure of the low-voltage plug-in of the battery module of this embodiment, wherein the low-voltage plug-in 2 is a collection component of the CCS integrated busbar in the battery module, and is a plug-in for collecting the working status of the battery module, including a plug-in body 201 and a plug-in reinforcement plate 202 fixedly connected to the plug-in body 201 and maintained under the plug-in body 201. The plug-in reinforcement plate 202 has a certain rigidity and strength and can be used to fix the low-voltage plug-in 2.

[0053] The busbar bracket 3 is used to fix and support the busbar in the lithium battery pack, ensure its stability and safety in the battery pack, and divide a plurality of holes to provide the connection between the busbar tab 4 and the battery cell pole. In the battery PACK assembly, the bracket plays the role of isolation and insulation. It effectively avoids direct contact between the battery cells and reduces the risk of short circuit. In particular, when the lithium battery pack is dropped or vibrated, the bracket can prevent the short circuit problem caused by the damage of the battery cell PVC film, and is an integrated component of the battery module. The busbar bracket 3 can be prepared by the blister process, with a thickness of 0.5mm, which has the effect of saving materials and reducing weight. However, the strength of the busbar bracket 3 of this thickness is insufficient, and the strength of the integrated connection structure of the low-voltage plug-in 2 in the busbar bracket 3 is also insufficient. Therefore, the plug-in bracket 1 can improve the strength of the connection between the low-voltage plug-in 2 and the busbar bracket 3, and has the effect of reinforcement and reinforcement. And by being clamped and fixed with the plug-in reinforcement plate 202 of the low-voltage plug-in 2, it also has the advantage of easy disassembly.

[0054] In order to improve the connection strength of the installation structure of the battery module low-voltage plug-in of this embodiment, the plug-in fixing portion includes a limiting rib 103 and two angled limiting grooves 102. The two angled limiting grooves 102 can respectively accommodate the two corners of the plug-in reinforcement plate 202 and clamp the plug-in reinforcement plate 202 together with the limiting rib 103 to achieve fixed constraint on the low-voltage plug-in 2. Figure 1 , Figure 2 and Figure 3 As shown, the limiting rib 103 is a long strip-shaped entity protruding from the plug-in body 201, the strip direction is perpendicular to the extension direction of the low-voltage plug-in 2, and can resist one side of the plug-in reinforcement plate 202 of the low-voltage plug-in 2 to prevent the low-voltage plug-in 2 from sliding outside one end of the busbar bracket 3. Figure 3 and Figure 4As shown, the positions of the two angled limiting grooves 102 can be determined according to the two corners of the opposite sides of the plug-in reinforcement plate 202 after being abutted by the limiting rib 103. The two angled limiting grooves 102 can be accommodated in the two corners of the plug-in reinforcement plate 202 to form a constraint on the remaining degrees of freedom of the low-voltage plug-in 2. The plug-in fixing part of this embodiment is provided with a limiting rib 103 and two angled limiting grooves 102, so that the fixed connection structure is constrained by three points. The rib can abut and limit the plug-in reinforcement plate 202, and the two angled limiting grooves 102 can limit the plug-in reinforcement plate 202 in the width direction, and together with the rib, limit the sliding of the length defense line. The plug-in fixing part clamps the low-voltage plug-in 2, and the distribution of the three points constitutes a vertex structure similar to a triangle, which is stable.

[0055] In order to make the installation of the plug-in bracket 1 and the low-voltage plug-in 2 more convenient and quick, a positioning column 104 is provided on the bracket body 101, and correspondingly, a positioning hole 2021 for the positioning column 104 to pass through is provided on the low-voltage plug-in 2. Figure 3 , Fig. 9 and Fig.10 As shown, when assembling the plug-in bracket 1 and the low-voltage plug-in 2 in the installation structure of the battery module low-voltage plug-in of this embodiment, first make the positioning column 104 pass through the positioning hole 2021 for positioning, then place the limiting rib 103 against one side of the plug-in reinforcement plate 202 of the low-voltage plug-in 2, and finally insert the two corners of the other side of the plug-in reinforcement plate 202 into the limiting groove 102 to complete the fixation. Two positioning columns 104 of this embodiment are provided, which are respectively located at the outer sides of the two ends of the limiting rib 103, and of course can also be adjusted according to the position of the positioning hole 2021 of the low-voltage plug-in 2. The positioning column 104 set on the bracket body 101 can form a match with the positioning hole 2021 on the low-voltage plug-in 2, which is more convenient and quick during assembly.

[0056] In order to make the installation of the plug-in bracket 1 and the bus bracket 3 more convenient and quick, the bracket body 101 is provided with a bracket buckle 105, and the bus bracket 3 is correspondingly provided with a through hole 302 for the bracket buckle 105 to be engaged. Figure 3 , Figure 5 and Figure 7 , Figure 8 As shown, the buckle of this embodiment is provided with two groups on the left and right, each group of buckles includes two hooks in opposite directions, and a single group of hooks passes through a through hole 302 and clamps the edge of the through hole 302 to achieve clamping and fixing. The bracket buckle 105 provided on the bracket body 101 can cooperate with the through hole 302 on the bus bracket body 301, so that the plug-in bracket 1 and the bus bracket 3 are clamped and fixed, and the clamping installation is more convenient and is not easy to cause damage to the structure and material of the bus bracket 3.

[0057] In order to make the installation of the plug-in bracket 1 and the busbar bracket 3 more secure, the bracket body 101 is fixedly connected to the busbar bracket 3 by hot riveting. Figure 3 , Figure 6 As shown, two hot rivet columns 106 are provided on the bracket body 101, and correspondingly, the bus bracket 3 has two hot rivet holes 303. The hot rivet columns 106 and the hot rivet holes 303 can not only play a role in auxiliary positioning during assembly, but also can be used for hot riveting reinforcement. The hot riveting connection method has the characteristics of convenient processing. Under the action of high temperature and pressure, the hot riveting process can form a solid connection with high strength and durability. After heating, the plasticity of the rivet is improved and the hardness is reduced, so that the external force required for riveting is smaller. During the cooling process of the rivet, the contraction of the length direction of the nail rod can increase the positive pressure of the bracket body 101 and the bus bracket 3, thereby improving the riveting strength.

[0058] In order to leave space for the explosion-proof valve, a hollow explosion-proof valve avoidance portion 107 is provided on the bracket body 101. The explosion-proof valve usually includes a valve body, a spring and a valve core. When the internal pressure of the battery increases, the pressure acts on the valve core. When the pressure exceeds the spring force on the valve core, the valve core will be pushed open, opening the valve and releasing the gas inside. When the pressure decreases, the spring will close the valve core again to prevent the gas from entering the battery again. The explosion-proof valve is an important device to ensure the safety of lithium batteries. It reduces the internal pressure of the battery by releasing internal gas, thereby preventing the battery from exploding or burning in extreme cases. Figure 3 , Figure 6 , Figure 8 As shown, the explosion-proof valve avoidance portion 107 is located in the middle of the bracket body 101 and is in an oblong shape to adapt to the shape of the explosion-proof valve, prevent the plug-in bracket 1 from conflicting with the explosion-proof valve, facilitate the smooth opening of the explosion-proof valve, and improve the safety of the battery. In addition, the explosion-proof valve avoidance portion 107 can reduce material weight, save costs, and improve the bending strength of the bracket body 101, further strengthening the strength of the connection structure.

[0059] In order to leave space for the connection between the tab 4 and the battery cell pole, a hollow tab avoidance portion 108 is provided on the bracket body 101. Figure 3 , Figure 6 , Figure 7 As shown, the installation structure of the low-voltage plug-in of the battery module of this embodiment enables the bar 4 and the battery cell pole to be electrically connected through the hollow bar avoidance portion 108. The bar 4 is usually used as an important component of current collection and transmission. Multiple bar 4 form a bus bar, which can effectively collect and transmit current, and at the same time have conductive properties, stability and reliability to support the normal operation of the battery and improve the overall performance, and connect the various batteries in series to form a path. In addition, the bar avoidance portion 108 can reduce material weight, save costs, and improve the bending strength of the bracket body 101, further strengthening the strength of the connection structure.

[0060] In order to balance the strength and material cost of the plug-in bracket 1, the thickness of the bracket body 101 of this embodiment is 1.3-1.8 mm. This thickness is in a moderate range, which can ensure the strength of the plug-in bracket 1 on the one hand, and prevent material waste caused by excessive thickening on the other hand.

[0061] When assembling the installation structure of the low-voltage plug-in of the battery module introduced in this embodiment, the busbar bracket 3 and the plug-in bracket 1 can be assembled first, and the hot riveting column 106 of the plug-in bracket 1 can be inserted into the hot riveting hole 303 on the busbar bracket body 301 for positioning, and then the bracket buckle 105 is inserted through the through hole 302 for fastening, and then the hot riveting column 106 is heated and riveted, so that the busbar bracket 3 and the plug-in bracket 1 can be fixedly connected. Then, the low-voltage plug-in 2 and the plug-in bracket 1 are assembled, and the positioning column 104 on the plug-in bracket 1 is first inserted through the positioning hole 2021 on the low-voltage plug-in 2 for positioning, and then one side of the plug-in reinforcement plate 202 of the low-voltage plug-in 2 is pressed against the limiting rib 103, and then the two corners of the opposite sides of the plug-in reinforcement plate 202 are inserted into the positions of the two curved angle limiting grooves 102, and the assembly of the low-voltage plug-in 2 and the plug-in bracket 1 can be completed. After assembly, the positions of the above components from top to bottom are the low-voltage plug-in 2, the busbar bracket 3 and the plug-in bracket 1, completing the assembly of the installation structure of the low-voltage plug-in of the battery module.

[0062] Embodiment 2

[0063] The present embodiment relates to a battery module, which has the above-mentioned installation structure of the battery module low-voltage plug-in. The battery module may also include battery cells and bus bars. The battery cells are located below the installation structure of the battery module low-voltage plug-in, and the bus bars are located above the bus bar bracket 3 together with the low-voltage plug-in 2.

[0064] Embodiment 3

[0065] The present embodiment relates to a battery pack, which includes the above-mentioned battery module.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module low-voltage plug-in installation structure, characterized in that: The structure includes: Busbar bracket; The plug-in bracket comprises a bracket body configured in a plate shape and a plug-in fixing portion provided on the bracket body, wherein the bracket body is fixedly held on the busbar bracket; The low-voltage plug-in comprises a plug-in body and a plug-in reinforcement plate fixedly connected to the plug-in body and held below the plug-in body. The plug-in reinforcement plate is clamped and constrained on the plug-in bracket by the plug-in fixing portion.

2. The installation structure of the low-voltage plug-in of the battery module according to claim 1 is characterized in that: The plug-in fixing portion includes a limiting rib and two angled limiting grooves, the two angled limiting grooves can respectively accommodate two corners of the plug-in reinforcement plate, and together with the limiting rib, clamp the plug-in reinforcement plate to achieve fixed constraint on the low-pressure plug-in.

3. The installation structure of the low-voltage plug-in of the battery module according to claim 2 is characterized in that: The bracket body is provided with a positioning column, and correspondingly, the low-voltage plug-in is provided with a positioning hole for the positioning column to pass through.

4. The installation structure of the low-voltage plug-in of the battery module according to claim 3 is characterized in that: The bracket body is provided with a bracket buckle, and correspondingly, the bus bracket is provided with a through hole for the bracket buckle to be engaged.

5. The installation structure of the low-voltage plug-in of the battery module according to claim 2, characterized in that: The bracket body is fixedly connected to the busbar bracket by means of hot riveting.

6. The installation structure of the low-voltage plug-in of the battery module according to claim 5, characterized in that: The bracket body is provided with a hollow explosion-proof valve avoidance portion.

7. The installation structure of the low-voltage plug-in of the battery module according to claim 1, characterized in that: The support body is provided with a hollow bar-piece avoidance portion.

8. The installation structure of the low-voltage plug-in of the battery module according to claim 7 is characterized in that: The thickness of the bracket body is 1.3-1.8 mm.

9. A battery module, characterized in that: The battery module has the installation structure of the battery module low-voltage plug-in according to any one of claims 1 to 8.

10. A battery pack, characterized in that: The battery pack includes the battery module according to claim 9.

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