Battery module support assembly and battery pack

Abstract

The battery module support assembly comprises an insulation support, the insulation support comprises a support body and a plurality of pre-positioning parts, the support body is provided with a plurality of pressure relief holes at intervals in the thickness direction of the support body, the pre-positioning parts are arranged on one side of the support body in the thickness direction of the support body in a protruding mode, and the pre-positioning parts are arranged close to the pressure relief holes located in the edge. And when the battery cell is mounted at the pressure relief hole, the pre-positioning part is attached to the periphery of the battery cell. According to the utility model, the pre-positioning part is arranged at the edge pressure relief hole of the bracket main body, and when the battery cell of the battery module is mounted at the edge pressure relief hole, the periphery of the battery cell is attached to the pre-positioning part, so that the battery cell can be accurately mounted at the edge pressure relief hole, and a pre-positioning effect is achieved on the mounting of the remaining battery cells.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module bracket assembly and a battery pack including the battery module bracket assembly. Background Art

[0002] As the heart component of new energy vehicles, the battery system plays a crucial role in aspects such as safety and endurance performance. When traditional battery systems form battery cells into groups, most of them encapsulate the battery cells into cell modules through peripheral structural components, and then integrate the modules into the battery box as units. The traditional cell grouping method not only requires a large variety and quantity of components, but also lacks positioning components and the assembly process is relatively troublesome, time-consuming and laborious. Summary of the Utility Model

[0003] One of the purposes of the embodiments of the utility model is to provide a battery module bracket assembly, which has a good pre-positioning effect on the battery module.

[0004] Another purpose of the embodiments of the utility model is to provide a battery pack, in which the battery module can be quickly and accurately installed in the box body of the battery pack.

[0005] To achieve the above purposes, the utility model adopts the following technical solutions:

[0006] Provide a battery module bracket assembly, including an insulating bracket.

[0007] Wherein, the insulating bracket includes a bracket main body, the length of the bracket main body extends along the X direction, the width of the bracket main body extends along the Y direction perpendicular to the X direction, the thickness of the bracket main body extends along the Z direction perpendicular to the X direction and the Y direction, the bracket main body is provided with a plurality of pressure relief holes at intervals along its thickness direction, the pre-positioning part protrudes from one side of the bracket main body along its thickness direction, the pre-positioning part is arranged adjacent to the pressure relief hole located at the edge, and when the battery cells of the battery module are installed at the pressure relief holes, the pre-positioning part fits with the outer periphery of the battery cells.

[0008] As a further solution of the battery module bracket assembly, the pressure relief holes have multiple columns along the Y direction, each column of the pressure relief holes is arranged at intervals along the X direction, among the adjacent two columns of the pressure relief holes, the pressure relief hole at the edge along the X direction of one column is adjacent to the first end of the bracket main body along its length direction, the pressure relief hole at the edge along the X direction of the other column is adjacent to the second end of the bracket main body along its length direction, one side of the pre-positioning part along the X direction is a first arc surface, and the first arc surface fits with the outer periphery of the battery cells on the pressure relief holes adjacent to the edge of the first end.

[0009] As a further solution of the battery module bracket assembly, the insulating bracket also includes a plurality of limiting protrusions, the limiting protrusions and the pre-positioning portion are located on the same side of the bracket body, and the limiting protrusions have three second arc surfaces. When the battery cells of the battery module are installed at the pressure relief hole, the three second arc surfaces are respectively fitted with the outer peripheries of three adjacent battery cells.

[0010] As a further solution of the battery module bracket assembly, every two columns of the pressure relief holes form a group, the limiting protrusion is located between the two columns of the pressure relief holes in each group, and along the X direction, there are multiple pressure relief holes between two adjacent limiting protrusions.

[0011] As a further solution of the battery module bracket assembly, the bracket body is provided with a plurality of circular holes and a plurality of waist-shaped holes along its thickness direction, the circular holes are adjacent to one end of the bracket body along its length direction, and the waist-shaped holes are adjacent to the other end of the bracket body along its length direction, and the length of the waist-shaped holes extends along the X direction.

[0012] As a further solution of the battery module bracket assembly, the insulating bracket also includes a plurality of glue storage parts, which are protruded on the side of the bracket body away from the pre-positioning part, and the glue storage parts are spaced apart from the pressure relief holes.

[0013] As a further solution of the battery module bracket assembly, the glue storage part is an annular boss protruding from the bracket body, a glue storage groove is formed between the annular boss and the bracket body, and a plurality of glue overflow holes are penetrated through the side wall of the annular boss.

[0014] As a further solution of the battery module bracket assembly, it also includes mica paper, which is fixed to the side of the bracket body away from the pre-positioning portion and covers the pressure relief hole. The mica paper is provided with a plurality of avoidance holes for the annular boss to pass through, and the annular boss corresponds one-to-one to the avoidance holes.

[0015] As a further solution of the battery module bracket assembly, there are multiple insulating brackets, and the multiple insulating brackets are fixedly connected along one side of the Y direction through a connecting piece.

[0016] A battery pack is also provided, comprising a box and a battery module, and further comprising the battery module bracket assembly as described above, wherein the battery module is mounted in the box via the battery module bracket assembly.

[0017] Beneficial effects:

[0018] The utility model provides a pre-positioning portion at the edge pressure relief hole of the bracket body. When the battery cell is installed at the edge pressure relief hole, the outer periphery of the battery cell fits with the pre-positioning portion, so that the battery cell can be accurately installed at the edge pressure relief hole and plays a pre-positioning role in the installation of the remaining battery cells.

[0019] In the present utility model, a limiting protrusion with three second arc surfaces is arranged on the bracket main body, and the limiting protrusion is located between three adjacent pressure relief holes. When installing the battery cell, the three second arc surfaces of the limiting protrusion can be respectively attached to the outer periphery of the battery cell at these three adjacent pressure relief holes, and play a role in pre-positioning the subsequent installation of the battery cell. By installing a limiting protrusion at intervals of multiple pressure relief holes on the bracket main body, and combining the limiting protrusion with the pre-positioning part, the battery cells of the battery module can be accurately aligned with the pressure relief holes one by one.

[0020] In the present utility model, a glue storage part is arranged on the bottom surface of the bracket main body. While supporting the bracket main body, glue can be injected into the glue storage part to stably fix the bracket main body in the box body.

[0021] In the present utility model, mica paper is pasted on the bottom surface of the bracket main body, which can improve the insulation protection, fire prevention and high temperature resistance of the insulating bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0023] Figure 1 It is a schematic structural diagram of the battery module bracket assembly according to Embodiment 1 of the present utility model.

[0024] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0025] Figure 3 It is a schematic structural diagram of the insulating bracket according to Embodiment 1 of the present utility model.

[0026] Figure 4 is Figure 3 a partial enlarged schematic diagram of part B in

[0027] Figure 5 It is an exploded schematic diagram of the battery module bracket assembly according to Embodiment 1 of the present utility model.

[0028] Figure 6 It is a schematic structural diagram of the battery module bracket assembly according to Embodiment 2 of the present utility model.

[0029] Figure 7 It is an exploded schematic diagram of the battery pack according to Embodiment 2 of the present utility model.

[0030] Figure 8 is Figure 7 a partial enlarged schematic diagram of part C in

[0031] Figures 1-8 In which:

[0032] 1. Insulating bracket; 11. Bracket main body; 111. Pressure relief hole; 112. Round hole; 113. Waist-shaped hole; 114. Step; 12. Pre-positioning part; 121. First arc surface; 13. Limit protrusion; 131. Second arc surface; 14. Glue storage part; 141. Glue overflow hole; 15. Glue storage groove;

[0033] 2. Mica paper; 21. Avoidance hole;

[0034] 3. Connecting piece;

[0035] 100. Box body; 110. Installation groove; 120. Cover plate; 130. Installation step; 140. Positioning column; 200. Battery module; 300. Battery module bracket assembly. Specific embodiments

[0036] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0037] Embodiment 1

[0038] As shown in Figure 1 and Figure 2 , the battery module bracket assembly of this embodiment includes an insulating bracket 1. The insulating bracket 1 includes a bracket main body 11. The length of the bracket main body 11 extends along the X direction, the width of the bracket main body 11 extends along the Y direction perpendicular to the X direction, and the thickness of the bracket main body 11 extends along the Z direction perpendicular to the X direction and the Y direction. A plurality of pressure relief holes 111 are arranged at intervals along the thickness direction of the bracket main body 11. The insulating bracket 1 further includes a plurality of pre-positioning parts 12. The pre-positioning parts 12 protrude from one side of the bracket main body 11 along its thickness direction. The pre-positioning parts 12 are arranged adjacent to the pressure relief holes 111 located at the edge. When the battery cells of the battery module are installed at the pressure relief holes 111, the pre-positioning parts 12 or the external tools installed on the pre-positioning parts 12 are in contact with the outer periphery of the battery cells.

[0039] When assembling and installing battery cells in a group, the installation position of the first battery cell is crucial. Without a positioning device, the first battery cell is likely to be installed off-center, resulting in deviations in the installation positions of subsequent battery cells, thus affecting the installation of the entire battery module. In view of this, in this embodiment, a pre-positioning portion 12 is provided at the pressure relief hole 111 on the edge of the bracket body 11. Taking the pre-positioning portion 12 being in contact with the outer periphery of the battery cell as an example, when the battery cell of the battery module is installed at the pressure relief hole 111 on the edge, the pre-positioning portion 12 just fits against the outer periphery of the battery cell at the pressure relief hole 111, thereby playing an accurate positioning role in the installation of the battery cell at the pressure relief hole 111 at this edge position. After this battery cell is installed, the remaining battery cells can be installed one by one with this battery cell as a reference to reduce the installation deviation. Therefore, on the one hand, the pre-positioning portion 12 of this embodiment has an accurate positioning effect on the battery cells at the edge position, and on the other hand, it has a good pre-positioning effect on the installation of the remaining battery cells except those at the edge position.

[0040] Further, the pressure relief holes 111 have multiple columns along the Y direction, and each column of pressure relief holes 111 is arranged at intervals along the X direction. Among two adjacent columns of pressure relief holes 111, the pressure relief holes 111 at the edge along the X direction of one column are adjacent to the first end of the bracket body 11 along its length direction, and the pressure relief holes 111 at the edge along the X direction of the other column are adjacent to the second end of the bracket body 11 along its length direction. One side of the pre-positioning portion 12 along the X direction is a first arc surface 121, and the first arc surface 121 fits against the outer periphery of the battery cell on the pressure relief hole 111 at the edge adjacent to the first end.

[0041] In short, in this embodiment, it is not necessary to set the pre-positioning portion 12 at the pressure relief holes 111 at the edge along the X direction of each column of pressure relief holes 111. Instead, two adjacent columns of pressure relief holes 111 are arranged staggeredly, and the pre-positioning portion 12 is set at the pressure relief holes 111 at the edge of one column of pressure relief holes 111 closer to one end of the bracket body 11 along the X direction. When installing the battery cells, first install the battery cells at the pressure relief holes 111 close to the edge, so that the battery cells are closely attached to the first arc surface 121 of the pre-positioning portion 12, and then, taking the installation positions of these two battery cells at the edge as a reference, install the remaining battery cells, which can reduce the installation position deviation of the remaining battery cells.

[0042] Specifically, the bracket body 11 of this embodiment has four columns of pressure relief holes 111 opened along the Y direction. Among the four columns of pressure relief holes 111, the pressure relief holes 111 at the edge along the X direction of the first column of pressure relief holes 111 and the third column of pressure relief holes 111 are closer to one end of the bracket body 11 along the X direction compared to the pressure relief holes 111 at the edge along the X direction of the other two columns of pressure relief holes 111, and the pre-positioning portion 12 is set at the end position of the pressure relief holes 111 at the edge of the first column of pressure relief holes 111 and the third column of pressure relief holes 111 close to the bracket body 11.

[0043] Optionally, the pre-positioning portion 12 is similar to a trapezoidal structure that is narrower at the top and wider at the bottom, and is integrally arc-shaped.

[0044] Of course, in order to reduce the weight of the insulating bracket 1 while not affecting the positioning effect, the pre-positioning portion 12 can also be designed as a hollow structure, and the hollow holes penetrate along the thickness direction of the pre-positioning portion 12.

[0045] Furthermore, the insulating bracket 1 further includes a plurality of limiting protrusions 13. The limiting protrusions 13 and the pre-positioning portion 12 are located on the same side of the bracket body 11. The limiting protrusions 13 have three second arc surfaces 131. When the battery cells of the battery module are installed at the pressure relief holes 111, the three second arc surfaces 131 are respectively attached to the outer peripheries of three adjacent battery cells.

[0046] After installing some battery cells through the pre-positioning portion 12, as the number of installed cells increases, there may be some deviations in the installation positions of the subsequent battery cells. At this time, under the action of the limiting protrusions 13, the installation positions of the remaining battery cells can be corrected. During installation, it is only necessary to closely attach the outer periphery of the battery cell to the second arc surface 131 of the limiting protrusion 13. The cooperation of the pre-positioning portion 12 and the limiting protrusions 13 in this embodiment can align the battery cells with the pressure relief holes 111 one by one when the battery module 200 is installed.

[0047] In this embodiment, every two columns of pressure relief holes 111 are taken as a group, and the limiting protrusions 13 are provided only between the two columns of pressure relief holes 111 in each group. Along the X direction, there are a plurality of pressure relief holes 111 between two adjacent limiting protrusions 13. Generally, during the installation of battery cells, after the first battery cell is accurately installed in place, 3-4 subsequent battery cells can be accurately installed based on this battery cell. Subsequently, when installing other battery cells, there may be position deviations. In this embodiment, a limiting protrusion 13 is provided after installing 3-4 battery cells in each column to position (i.e., correct) the installation positions of the subsequent battery cells. Compared with the technique of providing a limiting protrusion between every three adjacent pressure relief holes, it can not only reduce the weight of the insulating bracket 1 but also ensure the installation accuracy of the battery module 200.

[0048] In other embodiments, a plurality of circular holes 112 and a plurality of waist-shaped holes 113 are formed in the bracket body 11 along its thickness direction. The circular holes 112 are adjacent to one end of the bracket body 11 along its length direction (X direction), and the waist-shaped holes 113 are adjacent to the other end of the bracket body 11 along its length direction (X direction). The length of the waist-shaped holes 113 extends along the X direction.

[0049] Optionally, as Figures 2 to 4As shown, the bracket body 11 has a circular hole 112 at one end along its length and a waist-shaped hole 113 at the other end. When installing the insulating bracket 1, the circular hole 112 is first inserted and positioned with the positioning post at one end of the bottom of the box along the X direction, and then the waist-shaped hole 113 is inserted and engaged with the positioning post at the other end of the bottom of the box along the X direction. Since the waist-shaped hole 113 has sufficient space for the positioning post to move, the insulating bracket 1 can be quickly installed.

[0050] Of course, in other embodiments, the number of the round hole 112 and the waist-shaped hole 113 is not limited to one, and may also be two or three, depending on the size of the insulating bracket 1 .

[0051] like Figure 3 and Figure 4 As shown, the insulating bracket 1 of this embodiment further includes a plurality of glue storage portions 14 . The glue storage portions 14 are protrudingly provided on a side of the bracket body 11 away from the pre-positioning portion 12 . The glue storage portions 14 are spaced apart from the pressure relief holes 111 .

[0052] When the insulating bracket 1 is installed in the box, the adhesive reservoir 14 contacts the bottom of the box to support the bracket body 11. Adhesive is injected into the adhesive reservoir 14, securing the insulating bracket 1 to the box via the adhesive within the adhesive reservoir 14. Furthermore, when the bracket body 11 has four rows of pressure relief holes 111 along the Y direction, each row of two pressure relief holes 111 forms a group. Multiple adhesive reservoirs 14 are provided between the two rows of pressure relief holes 111 in each group of pressure relief holes 111, with the multiple adhesive reservoirs 14 evenly distributed along the X direction.

[0053] For example, the glue storage portion 14 is an annular boss protruding from the bracket body 11 , and a glue storage groove 15 is formed between the annular boss and the bracket body 11 .

[0054] In order to improve the installation stability of the insulating bracket 1 in the box, excess adhesive is usually injected into the glue storage tank 15. In this embodiment, a plurality of glue overflow holes 141 are set through the side wall of the annular boss, so that excess adhesive can overflow from the glue overflow holes 141 to ensure that the annular boss is tightly attached to the bottom of the box.

[0055] Optionally, the annular boss is a circular ring structure, and two opposite overflow holes 141 are provided on its side wall, so that excess adhesive can evenly overflow from the two oppositely arranged overflow holes 141 .

[0056] Optionally, the structure of the annular boss is not limited to a circular structure, and may also be a rectangular structure, a triangular structure, an elliptical structure, etc. The number of the glue overflow holes 141 is also not limited to two, and may also be three or four.

[0057] Further, if Figure 5As shown in the figure, the battery module bracket assembly of this embodiment further includes a mica paper 2. The mica paper 2 is fixed to the side of the bracket main body 11 away from the pre-positioning portion 12 and covers the pressure relief hole 111. The mica paper 2 is provided with a plurality of avoidance holes 21 for the annular bosses to pass through, and the annular bosses correspond to the avoidance holes 21 one by one.

[0058] In this embodiment, the mica paper 2 is attached to the bottom surface of the bracket main body 11, which can provide insulation protection, fire prevention, and high-temperature resistance for the insulating bracket 1.

[0059] Specifically, the mica paper 2 is pasted on the bottom surface of the bracket main body 11.

[0060] This embodiment also provides a battery pack (not shown in the figure). The battery pack includes a box body, a battery module, and the battery module bracket assembly of the above embodiment. The battery module is installed in the box body through the battery module bracket assembly.

[0061] Embodiment Two

[0062] This embodiment is basically the same as the above Embodiment One, except that the number of insulating brackets 1 is multiple, and one side of the multiple insulating brackets 1 along the Y direction is fixedly connected through a connecting piece.

[0063] As Figure 6 shown, the number of insulating brackets 1 is three. The adjacent sides of the bracket main bodies 11 of the three insulating brackets 1 along the Y direction are respectively provided with steps 114 (the partial enlarged structure can be referred to Figure 2 ). When two insulating brackets 1 are butted, the steps 114 of the two insulating brackets 1 form a butting groove. The opening of the butting groove faces the side of the bracket main body 11 where the pre-positioning portion 12 is provided. The connecting piece includes a connecting piece 3 having the same shape as the butting groove. The connecting piece 3 is fixed in the butting groove through an adhesive, so that the adjacent two insulating brackets 1 are fixedly connected.

[0064] Specifically, the insulating bracket 1 and the connecting piece 3 in this embodiment are both made of plastic material and are integrally injection molded.

[0065] The insulating bracket 1 of this embodiment is assembled into a large-size bracket in a splicing form. Compared with a large-size bracket formed by one-time injection molding (the injection mold cost of the large-size bracket is high), the production cost of the insulating bracket 1 can be reduced.

[0066] Optionally, the shapes of the butting groove and the connecting piece 3 are wavy. The use of the wavy structure design can improve the connection stability between the adjacent two insulating brackets 1. In other embodiments, it can also be other similar meandering structures, which will not be elaborated here.

[0067] As Figure 7 and Figure 8As shown in the figure, this embodiment further provides a battery pack, which includes a box body 100, a battery module 200, and the battery module support assembly 300 of the above embodiment. The battery module 200 is installed in the box body 100 through the battery module support assembly 300.

[0068] Further, the box body 100 has an installation groove 110 and a cover plate 120 for sealing the installation groove 110. The length of the installation groove 110 extends along the X direction. Installation steps 130 are provided around the bottom of the installation groove 110. A plurality of positioning posts 140 are respectively provided on the two installation steps 130 opposite to each other along the X direction.

[0069] During installation, first install the battery module 200 in the order of first installing the battery cells near the edge pressure relief hole 111 of the pre-positioning part 12, and then sequentially installing the remaining battery cells. After installing the battery module 200 on the battery module support assembly 300, inject an excessive amount of adhesive into the glue storage groove 15 of the annular boss at the bottom of the battery module support assembly 300. Then insert and fit the circular positioning hole 112 of the battery module support assembly 300 with the positioning post 140 at one end of the installation groove 110 along the X direction, and then insert and fit the waist-shaped hole 113 for positioning of the battery module support assembly 300 with the positioning post 140 at the other end of the installation groove 110 along the X direction. Subsequently, press down the battery module 200 and the battery module support assembly 300 to bond and fix the adhesive in the glue storage groove 15 of the annular boss to the bottom of the installation groove 110, and the excess adhesive overflows from the glue overflow hole 141 of the annular boss. Finally, cover the cover plate 120 on the installation groove 110 and fix it with fasteners such as bolts.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery module bracket assembly includes an insulating bracket. The insulating bracket includes a bracket body. The length of the bracket body extends along the X direction, the width of the bracket body extends along the Y direction perpendicular to the X direction, and the thickness of the bracket body extends along the Z direction perpendicular to the X direction and the Y direction. A plurality of pressure relief holes are spaced apart along the thickness direction of the bracket body, and it is characterized in that, The insulating bracket also includes a plurality of pre-positioning portions, which are arranged on one side of the bracket body along its thickness direction. The pre-positioning portions are arranged adjacent to the pressure relief holes located at the edge. When the battery cells of the battery module are installed at the pressure relief holes, the pre-positioning portions are in contact with the outer periphery of the battery cells.

2. The battery module bracket assembly according to claim 1, wherein, The pressure relief holes have multiple rows along the Y direction, and the pressure relief holes in each row are arranged at intervals along the X direction. Among two adjacent rows of the pressure relief holes, the pressure relief holes on the edge of one row along the X direction are adjacent to the first end of the bracket body along its length direction, and the pressure relief holes on the edge of the other row along the X direction are adjacent to the second end of the bracket body along its length direction. One side of the pre-positioning portion along the X direction is a first arc surface, and the first arc surface is in contact with the outer periphery of the battery cell on the pressure relief hole on the edge adjacent to the first end.

3. The battery module bracket assembly according to claim 2, characterized in that, The insulating bracket also includes a plurality of limiting protrusions, which are located on the same side of the bracket body as the pre-positioning portion. The limiting protrusion has three second arc surfaces. When the battery cells of the battery module are installed at the pressure relief hole, the three second arc surfaces are respectively fitted with the outer peripheries of three adjacent battery cells.

4. The battery module bracket assembly according to claim 3, wherein, Every two rows of the pressure relief holes form a group, the limiting protrusion is located between the two rows of the pressure relief holes in each group, and along the X direction, there are multiple pressure relief holes between two adjacent limiting protrusions.

5. The battery module bracket assembly according to claim 1, characterized in that, The bracket body is provided with a plurality of circular holes and a plurality of waist-shaped holes along its thickness direction. The circular holes are adjacent to one end of the bracket body along its length direction, and the waist-shaped holes are adjacent to the other end of the bracket body along its length direction. The length of the waist-shaped holes extends along the X direction.

6. The battery module bracket assembly according to claim 1, wherein, It also includes a plurality of glue storage parts, which are convexly arranged on a side of the bracket body away from the pre-positioning part, and the glue storage parts are spaced apart from the pressure relief holes.

7. The battery module bracket assembly according to claim 6, wherein, The glue storage portion is an annular boss convexly provided on the bracket body, a glue storage groove is formed between the annular boss and the bracket body, and a plurality of glue overflow holes are penetrated through the side wall of the annular boss.

8. The battery module bracket assembly according to claim 7, wherein It also includes mica paper, which is fixed to the side of the bracket body away from the pre-positioning portion and covers the pressure relief hole. The mica paper is provided with a plurality of avoidance holes for the annular boss to pass through, and the annular boss corresponds to the avoidance holes one by one.

9. The battery module bracket assembly according to any one of claims 1-8, characterized in that, There are multiple insulating brackets, and the multiple insulating brackets are fixedly connected along one side of the Y direction through a connecting piece.

10. A battery pack, comprising a box body and a battery module, characterized in that, It also includes a battery module bracket assembly according to any one of claims 1 to 9, and the battery module is installed in the box through the battery module bracket assembly.

Images