Mounting structure of battery module assembly and battery pack

Abstract

The utility model relates to a mounting structure of a battery module assembly and a battery pack, the mounting structure comprises a battery box, a module support and a protection plate support, the battery box comprises a box main body and a cover body, the box main body is provided with a containing cavity with an opening, and the cover body is detachably arranged at the opening end of the box main body in a covering mode; the module bracket is detachably mounted in the accommodating cavity, and a battery module mounting space is formed between the module bracket and the box main body; the protection plate support is detachably connected to the module support and located on the side, away from the battery module installation space, of the module support, and a protection plate installation space is formed between the protection plate support and the box body. According to the mounting structure, the battery module is convenient to mount and fix, the problem of loosening of the battery cells in the long-term use process can be prevented, and the reliability is good; and moreover, the battery protection plate is convenient to mount and dismount, so that the later maintenance is facilitated.

Description

Technical Field

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

[0002] With the development of new energy technology, people have a growing demand for battery products, and battery products have become a consumer product in people's lives. Currently, consumer batteries are mostly used to power furniture and home appliances. The installation and fixing methods of these power batteries are also similar. The more common installation structures include fiberboard, fiber tape winding, and heat shrink film fixing.

[0003] For the fiberboard and fiber tape winding method, during long-term use, the fiber tape will loosen, which will cause the fiberboard and the battery module bracket to loosen, thus causing the risk of the battery core to loosen; some small lithium battery products will use heat shrink film to fix, and for the heat shrink film fixing method, there are some sharp corners and burrs inside the battery module that can easily pierce the heat shrink film, which will cause the risk of module short circuit. It can be seen that the overall reliability of the above two installation methods is poor, and the subsequent maintenance is not convenient. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the utility model provides an improved installation structure of a battery module assembly and a battery pack.

[0005] The technical solution adopted by the utility model to solve the technical problem is: constructing a mounting structure of a battery module assembly, including:

[0006] A battery box, comprising a box body and a cover body, wherein the box body is provided with a receiving cavity having an opening, and the cover body is detachably covered on the opening end of the box body;

[0007] A module bracket is detachably mounted in the receiving cavity, and a battery module installation space is formed between the module bracket and the box body; and

[0008] The protection plate bracket is detachably connected to the module bracket and is located on a side of the module bracket away from the battery module installation space, and a protection plate installation space is formed between the protection plate bracket and the box body.

[0009] In some embodiments, the box body includes a bottom wall and a side wall, and the bottom wall and the side wall together define the receiving cavity;

[0010] The module bracket includes a side portion corresponding to the side wall of the box body and a top portion corresponding to the opening of the box body, wherein the side portion is connected to the top portion; the side portion is connected to the side wall and / or the bottom wall, and the top portion is connected to the side wall.

[0011] In some embodiments, the side portion is provided with a supporting portion at one end away from the top and away from the battery module installation space, and a slot corresponding to the supporting portion is formed on the side portion;

[0012] The top portion is provided with a first connecting portion at one end away from the side portion, and the supporting portion and the first connecting portion are respectively connected to the box body.

[0013] In some embodiments, the protection plate bracket includes a mounting portion that is detachably inserted into the card slot and a second connecting portion that is detachably connected to the top, and the mounting portion is connected to the second connecting portion.

[0014] In some embodiments, the side wall is provided with a first reinforcing rib protruding toward the battery module installation space.

[0015] In some embodiments, a buffer pad is provided between the cover and the module bracket; and / or,

[0016] The cover body is provided with a second reinforcing rib arranged toward the module bracket.

[0017] In some embodiments, the cover is provided with a handle; and / or,

[0018] The box body is provided with a buckle; and / or,

[0019] The box body is provided with a plug-in terminal seat.

[0020] In some embodiments, the detachable connection method between the cover body and the box body, the module bracket and the box body, and the protection plate bracket and the module bracket includes screw connection.

[0021] In some embodiments, the mounting structure further includes a fiberboard for wrapping around the periphery of the battery module and a fiber tape wrapped around the fiberboard.

[0022] The utility model also provides a battery pack, comprising a battery module, a battery protection plate and a mounting structure of the battery module assembly described in any one of the above items;

[0023] The battery module is installed in the battery module installation space, and the battery module is in close contact with the box body and the module bracket; the battery protection plate is detachably connected to the protection plate bracket and installed in the protection plate installation space.

[0024] The installation structure of the battery module assembly and the battery pack of the utility model have the following beneficial effects:

[0025] In this installation structure, the battery module installation space is formed by the battery box and the module bracket, and the module bracket and the battery box are detachably connected, which is convenient for the installation and fixation of the battery module and can prevent the battery cells from loosening during long-term use, and has good reliability; and the protection board bracket and the module bracket are detachably connected, which is convenient for the installation and disassembly of the battery protection board, thereby facilitating later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a schematic diagram of the structure of a battery pack according to an embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the battery pack shown;

[0029] Figure 3 yes Figure 2 A schematic diagram of a further decomposed structure of the battery pack shown;

[0030] Figure 4 yes Figure 3 The schematic diagram of the top view of the box body, module bracket and protection plate bracket after being assembled;

[0031] Figure 5 yes Figure 3 A schematic diagram of the structure of the box body from a top view;

[0032] Figure 6 yes Figure 3 a bottom view of the cover shown;

[0033] Figure 7 It is a schematic structural diagram of a battery module and a fiberboard according to an embodiment of the utility model.

[0034] In the accompanying drawings, 10. Installation structure, 1. Battery box, 11. Box body, 111. Bottom wall, 112. Side wall, 1121. First side wall, 1122. Second side wall, 1123. Third side wall, 1124. Fourth side wall, 113. First reinforcing rib, 12. Cover, 121. Second reinforcing rib, 13. Accommodating cavity, 131. Opening, 132. Battery module installation space, 133. Protection plate installation space, 14. Handle, 15. Buckle, 16. Plug terminal seat, 2. Module bracket, 21. Side, 22. Top, 23. Supporting part, 24. Slot, 25 .Bending portion, 26.First connecting portion, 3.Protective plate bracket, 31.Mounting portion, 32.Second connecting portion, 4.Buffer pad, 51.First screw hole, 52.First screw column, 53.Second screw hole, 54.Second screw column, 55.Third screw hole, 56.Third screw column, 57.Fourth screw hole, 58.Fiftth screw hole, 59.Screw, 510.Nut, 61.Fiberboard, 201.Battery module, 2011.Battery cell, 2012.Nickel sheet, 2013.First bracket, 2014.Second bracket, 202.Battery protection board, 100.Battery pack. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lower", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0037] Figures 1 to 3 FIG. 1 shows a mounting structure 10 of a battery module assembly in a battery pack 100 according to an embodiment of the present invention. Figures 1 to 3 As shown, the mounting structure 10 includes a battery box 1, a module bracket 2 and a protection board bracket 3. It can be understood that the battery module assembly includes a battery module 201 and a battery protection board 202, and the battery box 1 is used to install the battery module 201 and the battery protection board 202 therein to achieve the installation and fixation of the battery module 201 and the battery protection board 202.

[0038] The battery box 1 includes a box body 11 and a cover 12. The box body 11 is provided with a receiving cavity 13 having an opening 131. The cover 12 is detachably provided on the opening 131 of the box body 11. Figure 2 , Figure 4 and Figure 5 As shown, the box body 11 includes a bottom wall 111 and a side wall 112. The side wall 112 extends upward from the edge of the bottom wall 111, and the bottom wall 111 and the side wall 112 together define a receiving cavity 13. The shape of the box body 11 can be set according to the shape of the battery module 201, so that the installation and fixing effect is good.

[0039] In this embodiment, the cross-section of the battery module 201 may be roughly rectangular, and the cross-section of the battery box 1 may also be roughly rectangular. Specifically, four side walls 112 may be provided, and the four side walls 112 form a cylindrical structure in the circumferential direction. The bottom wall 111 blocks the cylindrical structure at the bottom, thereby forming a receiving cavity 13 inside the box body 11.

[0040] Combination Figures 2 to 4As shown, the module bracket 2 is used to install the battery module 201 in the box body 11 and is in close contact with the battery module 201 to solve the problem of loosening of the battery cell 2011 during long-term use. In this embodiment, the module bracket 2 is detachably installed in the receiving cavity 13, and a battery module installation space 132 is formed between the module bracket 2 and the box body 11.

[0041] Specifically, the module bracket 2 includes a side portion 21 corresponding to the side wall 112 of the box body 11 and a top portion 22 corresponding to the opening 131 of the box body 11 . The side portion 21 is connected to the top portion 22 and the side portion 21 and the top portion 22 are integrated to facilitate the installation of the module bracket 2 .

[0042] In this embodiment, the side portion 21 may be provided with one, the side portion 21 extends along the depth direction of the box body 11 and corresponds to a side wall 112 of the box body 11, the top portion 22 may extend along the length or width direction of the box body 11, and the side portion 21 and the top portion 22 may be arranged at a vertical angle as a whole, so the module bracket 2 is a semi-enclosed structure, and the side portion 21 and the top portion 22 of the module bracket 2 and the bottom wall 111 and the side wall 112 of the box body 11 jointly define a battery module installation space 132 for installing the battery module 201. It can be understood that the module bracket 2 is installed on one side of the battery module 201 to fix the battery module 201 at the top and one side of the battery module 201.

[0043] It is understandable that the side portions 21 may be provided with two or more numbers to fix the battery module 201 on two or more sides of the battery module. It is understandable that the side portions 21 and the top portion 22 may be arranged at other corresponding angles, which may be arranged according to the actual shape of the battery module 201 and are not limited to being arranged at right angles.

[0044] The side portion 21 and the top portion 22 may both be plate-shaped structures, so as to provide good contact and fixation effect with the battery module 201. The side portion 21 is connected to the side wall 112 and / or the bottom wall 111 of the box body 11, and the top portion 22 is connected to the side wall 112 of the box body 11, so as to fix the module bracket 2 in the box body 11, and further fix the battery module 201 in the box body 11.

[0045] Combination Figure 3 and Figure 4As shown, specifically, the side portion 21 is provided with a supporting portion 23 at one end away from the top 22 and away from the battery module installation space 132, and a card slot 24 corresponding to the supporting portion 23 is formed on the side portion 21, and the supporting portion 23 is connected to the box body 11. It can be understood that the supporting portion 23 extends outward from the end of the side portion 21 away from the top 22 to avoid interfering with the installation of the battery module 201; the side portion 21 is provided with a bending portion 25 on both sides of the side portion 21 close to the end of the supporting portion 23 and away from the battery module installation space 132, and a vertical card slot 24 is formed between the two bending portions 25 and the side portion 21. The supporting portion 23 is detachably connected to the bottom wall 111 and / or the corresponding side wall 112 of the box body 11.

[0046] The top 22 is provided with a first connection portion 26 at one end away from the side portion 21, and the first connection portion 26 is connected to the box body 11. Specifically, the top 22 extends outward at one end away from the side portion 21 to form the first connection portion 26, and the first connection portion 26 protrudes outward from the battery module 201 to facilitate detachable connection with the box body 11.

[0047] The module support 2 is an integrated structure, that is, the side portion 21, the top portion 22, the supporting portion 23, the bent portion 25 and the first connecting portion 26 are integrally arranged. Of course, these structures can also be connected to form an integral whole. It can be understood that the shapes of the side portion 21 and the top portion 22 of the module support 2 can be set according to the shape of the battery module 201 to be fixed. For example, when the battery module 201 is as shown in Figure 3 When the shape is shown, it has a missing corner, and the top 22 of the module bracket 2 can be in a stepped curved shape adapted to the missing corner at the end away from the side 21, so that the top 22 has a better contact effect with the battery module 201 and a better fixing effect.

[0048] Combination Figures 2 to 5 As shown, the side wall 112 is provided with a first reinforcing rib 113 protruding toward the battery module installation space 132 to limit the battery module 201. In this embodiment, the box body 11 includes four side walls 112, which may specifically include a first side wall 1121, a second side wall 1122, a third side wall 1123 and a fourth side wall 1124 connected in sequence. The side portion 21 of the module bracket 2 corresponds to the first side wall 1121 and is arranged close to the first side wall 1121. The supporting portion 23 is connected to the first side wall 1121 and / or the bottom wall 111. The first connecting portion 26 on the top 22 is connected to the third side wall 1123 and is close to the opening 131. Therefore, the side portion 21, the top 22, the second side wall 1122, the third side wall 1123, and the fourth side wall 1124 jointly define the battery module installation space 132.

[0049] The first reinforcing rib 113 may be disposed on at least one of the second side wall 1122, the third side wall 1123, and the fourth side wall 1124. In this embodiment, the first reinforcing rib 113 may be disposed on the second side wall 1122 and the third side wall 1123, and at least one first reinforcing rib 113 may be disposed on each side wall 112. When two or more first reinforcing ribs 113 are disposed on a side wall 112, each first reinforcing rib 113 is disposed at intervals along the width direction of the corresponding side wall 112, and each first reinforcing rib 113 extends along the depth direction of the box body 11, so as to limit the battery module 201 at different heights.

[0050] Combination Figure 2 and Figure 4 As shown, a handle 14 is provided on the cover body 12; and / or, a buckle 15 is provided on the box body 11; and / or, a plug-in terminal seat 16 is provided on the box body 11. It can be understood that a handle 14 is provided on the cover body 12 for easy picking. The buckle 15 and the plug-in terminal seat 16 can be arranged on the outer surface of the side wall 112 of the box body 11. In this embodiment, the fourth side wall 1124 can be recessed inward to limit the battery module 201. Among them, the buckle 15 and the plug-in terminal seat 16 can be arranged on the outer surface of the fourth side wall 1124, and the buckle 15 is used to assemble the mounting structure 10 to the whole machine to play a fixing role; the plug-in terminal seat 16 fixes the input and output terminals of the battery module 201 for easy connection.

[0051] Combination Figures 2 to 4 As shown, the battery protection board 202 is also called a BMS board. In this embodiment, the mounting structure 10 includes a protection board bracket 3, which is used to install and fix the battery protection board 202 in the box body 11. Specifically, the protection board bracket 3 is detachably connected to the module bracket 2, and is located on the side of the module bracket 2 away from the battery module installation space 132, and a protection board installation space 133 is formed between the protection board bracket 3 and the box body 11. It can be understood that the battery protection board 202 can be connected to the protection board bracket 3, and the protection board bracket 3 is detachably connected to the module bracket 2, so as to realize the installation and fixation of the battery protection board 202, and facilitate the later maintenance of the battery protection board 202.

[0052] The protection plate bracket 3 includes a mounting portion 31 that is detachably inserted into the card slot 24 of the module bracket 2, and a second connecting portion 32 that is detachably connected to the top 22, and the mounting portion 31 is connected to the second connecting portion 32. It can be understood that the protection plate bracket 3 is an integrated structure, and the mounting portion 31 and the second connecting portion 32 can both be arranged in a plate shape, and the second connecting portion 32 is connected to one end of the mounting portion 31, and the second connecting portion 32 is arranged vertically to the mounting portion 31, so that the mounting portion 31 is inserted into the card slot 24 of the module bracket 2 through its end away from the second connecting portion 32, and the other end of the mounting portion 31 is detachably connected to the top 22 through the second connecting portion 32. The mounting portion 31 of the protection plate bracket 3 is spaced apart from the first side wall 1121 of the box body 11, thereby forming a protection plate installation space 133 to accommodate the battery protection plate 202.

[0053] Combination Figure 2 , Figure 3 and Figure 6 As shown, the cover body 12 is detachably covered at the end of the opening 131 of the box body 11, and forms a whole with the box body 11. In this embodiment, a buffer pad 4 is provided between the cover body 12 and the module bracket 2; and / or, the cover body 12 is provided with a second reinforcing rib 121 arranged toward the module bracket 2. It can be understood that a buffer pad 4 is provided between the cover body 12 and the top 22 of the module bracket 2, which plays a role of buffering and shockproofing, and the buffer pad 4 can be a silicone pad. A second reinforcing rib 121 is provided on the inner side of the cover body 12, and the second reinforcing rib 121 is arranged corresponding to the buffer pad 4, which plays a role of pressing the buffer pad 4 to press the module bracket 2, and then press the battery module 201.

[0054] The detachable connection between the cover 12 and the box body 11, the module bracket 2 and the box body 11, and the protection plate bracket 3 and the module bracket 2 include screw connection. Figure 3 , Figure 5 As shown, the cover body 12 may be provided with a first screw hole 51, and the box body 11 may be provided with a first screw column 52, and the first screw column 52 is arranged at the end of the opening 131 of the box body 11. The supporting portion 23 is provided with a second screw hole 53, and the bottom wall 111 and / or the first side wall 1121 of the box body 11 are provided with a second screw column 54. In this embodiment, the second screw column 54 can connect the bottom wall 111 and the first side wall 1121 at the same time. The first connecting portion 26 is provided with a third screw hole 55, and the third side wall 1123 of the box body 11 is provided with a third screw column 56, and the third screw column 56 is arranged near the end of the opening 131. The second connecting portion 32 is provided with a fourth screw hole 57, and the top 22 is provided with a fifth screw hole 58. It can be understood that the corresponding screw holes and screw columns, and screw holes and screw holes are connected by screw connection, for example, they can be locked by screws 59 and screw columns, or by screws 59 and nuts 510.

[0055] Combination Figure 2 , Figure 3 and Figure 7 As shown, in this embodiment, the mounting structure 10 further includes a fiberboard 61 for wrapping around the periphery of the battery module 201, and a fiber tape (not shown) wrapped around the fiberboard 61. It can be understood that the fiberboard 61 is first wrapped around the periphery of the battery module 201, and then the fiber tape is wrapped and fixed to achieve the primary fixation of the battery module 201. The mounting structure 10 is then used to achieve the secondary fixation of the battery module 201, so that the fixing effect is good and the reliability is good, and the problem of loosening between the battery cells 2011 during long-term use is solved.

[0056] It can be understood that the mounting structure 10 of this embodiment can be applied to a light power lithium battery, that is, the mounting structure 10 can be a mounting structure 10 of a light power lithium battery. Of course, the mounting structure 10 can also be applied to other types of battery modules.

[0057] The utility model also provides a battery pack 100, combined with Figures 1 to 4 As shown, the battery pack 100 includes a battery module 201, a battery protection plate 202 and the mounting structure 10 of the battery module assembly of the above-mentioned embodiment; the battery module 201 is installed in the battery module mounting space 132, and the battery module 201 is in close contact with the box body 11 and the module bracket 2; the battery protection plate 202 is detachably connected to the protection plate bracket 3 and is located in the protection plate mounting space 133.

[0058] like Figure 7 As shown, the battery module 201 includes a plurality of battery cells 2011, nickel sheets 2012 connecting the battery cells 2011, and a first bracket 2013 and a second bracket 2014 for fixing the battery cells 2011 and the nickel sheets 2012 at both ends. The fiberboard 61 is wrapped around the outer periphery of the entire battery module 201, and the fiberboard 61 is wrapped with a fiber tape to achieve a primary fixation of the battery module 201, thereby forming the overall structure of the battery module 201.

[0059] In this embodiment, the overall structure of the battery module 201 is installed in the box body 11, the module bracket 2 is connected to the box body 11, and the overall structure of the battery module 201 is fixedly installed in the battery module installation space 132. The module bracket 2, the second side wall 1122, the third side wall 1123 and the fourth side wall 1124 of the box body 11 are in close contact with the overall structure of the battery module 201, squeezing the overall structure of the battery module 201; and the cover 12 is locked downward to press the module bracket 2, and the overall structure of the battery module 201 is fastened in the box body 11, and the battery box 1 protects the overall structure of the battery module 201, reduces the risk of damage and leakage of the battery module 201 due to impact, and facilitates the installation and maintenance of the battery module 201; and in the long-term use process, it can reduce the risk of loosening between the battery cells 2011. It can be understood that the second side wall 1122 and the third side wall 1123 are in close contact with the overall structure of the battery module 201 through the first reinforcing rib 113.

[0060] The battery protection board 202 is detachably connected to the protection board bracket 3, and is integrally installed with the protection board bracket 3 on the side of the module bracket 2. When the protection board bracket 3 is detachably connected to the module bracket 2, the battery protection board 202 is installed in the protection board installation space 133. It can be understood that the protection board bracket 3 is fixed by the module bracket 2 and is detachably connected to the module bracket 2. The connection and disassembly methods are simple, making the installation and disassembly of the battery protection board 202 convenient and convenient for later maintenance.

[0061] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A battery module assembly installation structure, characterized in that: include: A battery box (1) comprises a box body (11) and a cover body (12), wherein the box body (11) is provided with a receiving cavity (13) having an opening (131), and the cover body (12) is detachably covered at the end of the opening (131) of the box body (11); A module bracket (2) is detachably mounted in the receiving cavity (13), and a battery module installation space (132) is formed between the module bracket (2) and the box body (11); and A protection plate bracket (3) is detachably connected to the module bracket (2) and is located on a side of the module bracket (2) away from the battery module installation space (132), and a protection plate installation space (133) is formed between the protection plate bracket (3) and the box body (11).

2. The mounting structure of the battery module assembly according to claim 1, characterized in that: The box body (11) comprises a bottom wall (111) and a side wall (112), and the bottom wall (111) and the side wall (112) together define the receiving cavity (13); The module bracket (2) comprises a side portion (21) corresponding to the side wall (112) of the box body (11) and a top portion (22) corresponding to the opening (131) of the box body (11), wherein the side portion (21) is connected to the top portion (22); the side portion (21) is connected to the side wall (112) and / or the bottom wall (111), and the top portion (22) is connected to the side wall (112).

3. The mounting structure of the battery module assembly according to claim 2, characterized in that: The side portion (21) is provided with a supporting portion (23) at one end away from the top portion (22) and at a side away from the battery module installation space (132), and a slot (24) corresponding to the supporting portion (23) is formed on the side portion (21); The top portion (22) is provided with a first connecting portion (26) at an end away from the side portion (21), and the supporting portion (23) and the first connecting portion (26) are respectively connected to the box body (11).

4. The mounting structure of the battery module assembly according to claim 3, characterized in that: The protection plate bracket (3) comprises a mounting portion (31) detachably inserted into the card slot (24) and a second connecting portion (32) detachably connected to the top (22), wherein the mounting portion (31) is connected to the second connecting portion (32).

5. The mounting structure of the battery module assembly according to claim 2, characterized in that: The side wall (112) is provided with a first reinforcing rib (113) protruding toward the battery module installation space (132).

6. The mounting structure of the battery module assembly according to claim 1, characterized in that: A buffer pad (4) is provided between the cover (12) and the module bracket (2); and / or, The cover body (12) is provided with a second reinforcing rib (121) arranged towards the module bracket (2).

7. The mounting structure of the battery module assembly according to claim 1, characterized in that: The cover body (12) is provided with a handle (14); and / or, The box body (11) is provided with a buckle (15); and / or, The box body (11) is provided with a plug-in terminal seat (16).

8. The mounting structure of the battery module assembly according to claim 1, characterized in that: The detachable connection method between the cover body (12) and the box body (11), the module bracket (2) and the box body (11), and the protection plate bracket (3) and the module bracket (2) includes screw connection.

9. The mounting structure of the battery module assembly according to claim 1, characterized in that: The mounting structure (10) further comprises a fiberboard (61) for wrapping around the outer periphery of the battery module (201), and a fiber tape wrapped around the fiberboard (61).

10. A battery pack, characterized in that: Comprising a battery module (201), a battery protection plate (202) and a mounting structure (10) of a battery module assembly according to any one of claims 1 to 9; The battery module (201) is installed in the battery module installation space (132), and the battery module (201) is in close contact with the box body (11) and the module bracket (2); the battery protection plate (202) is detachably connected to the protection plate bracket (3) and installed in the protection plate installation space (133).

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