Energy storage battery pack

Abstract

The utility model provides an energy storage battery pack. The energy storage battery pack comprises a shell assembly, a limiting piece and a battery module assembly, the battery module assembly is provided with a first limiting part and a second limiting part, and the first limiting part and the second limiting part are oppositely arranged on the two sides of the shell assembly in the first direction so as to limit the shell assembly; the limiting piece is connected with the battery module assembly, one of the shell assembly and the limiting piece is provided with a limiting hole, and the other one of the shell assembly and the limiting piece is provided with a limiting part; and the limiting piece can move relative to the battery module assembly, so that the limiting part extends into the limiting hole, and when the limiting piece extends into the limiting hole, the central axis of the limiting hole is not perpendicular to the first direction, so that the mounting efficiency of the shell assembly and the battery module assembly is improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, and particularly relates to an energy storage battery pack. Background Art

[0002] An energy storage battery pack is a device for storing electric energy, which can convert electric energy into chemical energy and store it, and is widely used in fields such as electric vehicles, energy management, power grid regulation, and emergency energy backup.

[0003] Among them, an energy storage battery pack generally includes a housing and a battery module. The battery module is arranged inside the housing and connected to the housing. In related technologies, a first threaded hole is usually provided on the housing, and a second threaded hole is provided on the battery module. By aligning the first threaded hole and the second threaded hole and using tools such as a screwdriver or an electric screwdriver to screw a fixing bolt into the first threaded hole and the second threaded hole, the fixing and installation of the housing on the battery module are realized. As a result, the installation efficiency of the housing and the battery module is relatively low. Summary of the Utility Model

[0004] In view of this, embodiments of the present utility model are committed to providing an energy storage battery pack to improve the installation efficiency of the housing assembly and the battery module assembly to a certain extent.

[0005] The present utility model provides an energy storage battery pack, including a housing assembly, a limiting member, and a battery module assembly;

[0006] The battery module assembly has a first limiting portion and a second limiting portion. The first limiting portion and the second limiting portion are oppositely arranged on both sides of the housing assembly along a first direction to limit the housing assembly.

[0007] The limiting member is connected to the battery module assembly. One of the housing assembly and the limiting member has a limiting hole, and the other of the housing assembly and the limiting member has a limiting portion. The limiting member can move relative to the battery module assembly so that the limiting portion extends into the limiting hole, and when the limiting member extends into the limiting hole, the central axis of the limiting hole is not perpendicular to the first direction.

[0008] Optionally, the limiting member is rotationally matched with the battery module assembly;

[0009] When the limiting member extends into the limiting hole, the rotation axis of the limiting member and the battery module assembly intersects with the central axis of the limiting hole.

[0010] Optionally, the battery module assembly includes a battery module and a fixing body connected to each other. The fixing body includes a fixing member and a main body part that are detachably connected;

[0011] The limiting member is connected to the main body, and has an axial hole for the fixing member to extend therein, and the limiting member is rotatably matched with the axial hole; the first limiting portion and the second limiting portion are located on the main body;

[0012] The fixing member and the main body are detachably connected by threaded engagement.

[0013] Optionally, one of the limiting member and the battery module assembly has an axial hole, and the other of the limiting member and the battery module assembly extends into the axial hole and rotatably cooperates with the axial hole;

[0014] The other of the limit member and the battery module assembly has a first positioning surface and a second positioning surface arranged at intervals along the rotation axis direction of the limit member, and one of the limit member and the battery module assembly is confined between the first positioning surface and the second positioning surface to limit the axial movement of the limit member.

[0015] Optionally, a limiting groove extending along the second direction is formed on the battery module assembly, and the limiting groove is used for the housing assembly to extend into;

[0016] In the first direction, the limiting groove has a first groove wall and a second groove wall opposite to each other; the first groove wall is formed as the first limiting portion, and the second groove wall is formed as at least a part of the second limiting portion;

[0017] The second direction is perpendicular to the first direction.

[0018] Optionally, the limiting groove is arranged to penetrate the battery module assembly along the second direction, so that part of the housing assembly extends to the outside of the battery module assembly through the limiting groove;

[0019] One of the limiting hole and the limiting portion is arranged on a portion of the housing assembly that extends to the outside of the battery module assembly.

[0020] Optionally, the battery module assembly has a hollow cavity, and the housing assembly includes a first limiting portion and a second limiting portion; the limiting groove and a mounting hole connected to the limiting groove are provided on the cavity wall of the cavity, and the first limiting portion can extend into the limiting groove through the mounting hole;

[0021] The second limiting portion is not perpendicular to the first limiting portion, and the second limiting portion abuts against an outer edge of the mounting hole on one side away from the cavity, so that a portion of the battery module assembly abutting against the second limiting portion forms part of the second limiting portion.

[0022] Optionally, in a direction away from the limiting groove, the aperture of at least a part of the mounting hole gradually increases in a third direction;

[0023] wherein the third direction intersects the first direction and is perpendicular to the second direction.

[0024] Optionally, the housing assembly further includes an intermediate limiting part connected between the first limiting part and the second limiting part;

[0025] The mounting hole has a limiting hole section extending in a direction close to the limiting groove; when the first limiting part extends into the limiting groove, at least a part of the intermediate limiting part is located in the limiting hole section;

[0026] In the third direction, the size of the intermediate limiting part is adapted to the aperture of the limiting hole section; wherein the third direction intersects the first direction and is perpendicular to the second direction.

[0027] Optionally, the housing assembly includes a housing and a fixing bracket connected to the housing; one of the limiting hole and the limiting part is arranged on the fixing bracket, and the first limiting part and the second limiting part are oppositely arranged on both sides of the fixing bracket;

[0028] The fixing bracket has a welding surface, and the housing is welded at the welding surface;

[0029] And / or, a holding part is arranged on the limiting member, and the holding part is used for being held to drive the limiting member to move relative to the battery module assembly;

[0030] And / or, the battery module assembly includes a connected battery module and a fixing body, the first limiting part and the second limiting part are located on the fixing body, and the limiting member is connected to the fixing body; the fixing body is arranged close to the bottom of the battery module.

[0031] The energy storage battery pack provided by the present utility model realizes the limiting and fixing of the battery module assembly and the housing assembly in the first direction through the first limiting part and the second limiting part on the battery module assembly, and the first limiting part and the second limiting part are oppositely arranged on both sides of the housing assembly along the first direction, so as to limit the housing assembly. That is, the limiting and fixing of the battery module assembly and the housing assembly in the first direction can be realized through the first limiting part and the second limiting part on the battery module assembly. At the same time, by connecting the limiting member to the battery module assembly, and one of the housing assembly and the limiting member has a limiting hole, and the other of the housing assembly and the limiting member has a limiting part, by making the limiting member movable relative to the battery module assembly, so that the limiting part extends into the limiting hole, and when the limiting member extends into the limiting hole, the central axis of the limiting hole is not perpendicular to the first direction, thereby realizing the relative fixing and reliable connection of the battery module assembly and the housing assembly in the other two directions not perpendicular to the first direction through the cooperation of the limiting member and the limiting hole, and further realizing the fixing of the battery module assembly and the housing assembly.

[0032] Compared with the method of fixing the battery module assembly and the housing assembly by bolts, in this embodiment, the connection between the housing assembly and the battery module assembly is realized by limiting in three directions, so that the blind installation of the two can be realized to a certain extent. That is, the convenient installation of the battery module assembly and the housing assembly can be realized without the operation of aligning the threaded holes for passing bolts on the battery module assembly and the housing assembly, thereby improving the installation efficiency of the two to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of a fixing bracket in the energy storage battery pack according to an embodiment of the present utility model;

[0034] Figure 2 It is a schematic structural diagram of the main part in the energy storage battery pack according to an embodiment of the present utility model;

[0035] Figure 3 is Figure 2 an enlarged view of part I in

[0036] Figure 4 It is a schematic structural diagram of a fixing member according to an embodiment of the present utility model;

[0037] Figure 5 It is a schematic structural diagram of a limiting member according to an embodiment of the present utility model;

[0038] Figure 6 It is a partial structural schematic diagram of the energy storage battery pack according to an embodiment of the present utility model Figure 1 ;

[0039] Figure 7Partial structural schematic diagram of an energy storage battery pack according to an embodiment of the present invention Figure 2 ;

[0040] Figure 8 is Figure 7 an enlarged view of location A in

[0041] Among them, 1. Outer shell assembly; 11. Fixed bracket; 110. Limit hole; 111. First limit part; 112. Second limit part; 113. Intermediate limit part; 114. Flange; 115. Welding surface; 2. Limiting member; 21. Limiting part; 22. Shaft hole; 23. Holding part; 3. Battery module assembly; 30. Fixed body; 31. Fixed part; 311. First positioning surface; 312. Optical axis part; 313. Connecting part; 32. Main body part; 321. First limit part; 322. Second limit part; 323. Second positioning surface; 324. Limit groove; 325. Cavity; 326. Mounting hole; 327. Limit hole section; 328. Assembly hole. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] An energy storage battery pack is a device used to store electrical energy, which can convert electrical energy into chemical energy and achieve storage, and is widely used in fields such as electric vehicles, energy management, power grid regulation, and emergency energy backup.

[0044] Among them, an energy storage battery pack generally includes an outer shell and a battery module. The battery module is arranged inside the outer shell and is connected to the outer shell. In the related art, a first threaded hole is usually provided on the outer shell, and a second threaded hole is provided on the battery module, so that the outer shell is fixed and installed on the battery module through a fixing bolt passing through the first threaded hole and the second threaded hole. When installing the two, operations such as aligning the first threaded hole and the second threaded hole are required, and tools such as a screwdriver and an electric screwdriver are needed to screw the bolt, resulting in a low installation efficiency of the outer shell and the battery module.

[0045] Based on this, the embodiments of the present invention provide an energy storage battery pack, which performs three-directional limiting on the outer shell assembly and the battery module assembly used to connect with the battery module of the energy storage battery pack, and connects and fixes the outer shell assembly and the battery module, thereby achieving blind installation of the battery module and the outer shell assembly to a certain extent and improving the installation efficiency of the two to a certain extent.

[0046] The energy storage battery pack provided by the present utility model will be described in detail below with reference to the accompanying drawings through specific embodiments:

[0047] Refer to Figures 1 to 8 As shown, this embodiment provides an energy storage battery pack. Exemplarily, the energy storage battery pack can be an energy storage battery pack, and for example, it can be a household energy storage battery pack. When in use, an inverter or the like can be connected between the household energy storage battery pack and the electrical equipment.

[0048] Specifically, the energy storage battery pack specifically includes a housing assembly 1, a limiting member 2, and a battery module assembly 3.

[0049] Exemplarily, when the energy storage battery pack is a household energy storage battery pack, the battery module assembly 3 can be first installed on the wall. After the battery module assembly 3 is installed, the housing assembly 1 is then installed on the battery module assembly 3 to cover and protect at least part of the battery module assembly 3. Specifically, the above-mentioned battery module assembly 3 can include battery modules (not shown in the figure).

[0050] Among them, the battery module assembly 3 has a first limiting portion 321 and a second limiting portion 322. The first limiting portion 321 and the second limiting portion 322 are oppositely arranged on both sides of the housing assembly 1 along a first direction to limit the housing assembly 1. Exemplarily, the first direction can be, for example, Figure 2 , Figures 6 to 8 the X direction shown.

[0051] In this way, the degrees of freedom of the battery module assembly 3 and the housing assembly 1 in the first direction can be restricted, thereby limiting the battery module assembly 3 and the housing assembly 1 to a certain extent in the first direction.

[0052] Specifically, the limiting member 2 is connected to the battery module assembly 3. The housing assembly 1 has a limiting hole 110, and the limiting member 2 has a limiting portion 21. The limiting member 2 can move relative to the battery module assembly 3 so that the limiting portion 21 extends into the limiting hole 110, and when the limiting member 2 extends into the limiting hole 110, the central axis of the limiting hole 110 is not perpendicular to the first direction.

[0053] Among them, the central axis of the limiting hole 110 is not perpendicular to the first direction. Specifically, the central axis of the limiting hole 110 can be parallel to the first direction, or the central axis of the limiting hole 110 can intersect with the first direction, but the included angle between the two is not equal to 90°. Exemplarily, the central axis of the limiting hole 110 can be arranged along Figure 2 , Figures 6 to 8 the X direction shown.

[0054] In this way, through the cooperation between the limiting member 2 and the limiting hole 110, the inner hole wall of the limiting hole 110 can limit the limiting member 2 to a certain extent in the radial plane of the limiting hole 110. Since the central axis of the limiting hole 110 is not perpendicular to the first direction, the degrees of freedom of the battery module assembly 3 and the housing assembly 1 in the other two directions different from the first direction (such as Figure 2 , Figures 6 to 8 the Y direction and the Z direction shown) can be restricted, so as to limit the battery module assembly 3 and the housing assembly 1 to a certain extent, and cooperate with the first limiting portion 321 and the second limiting portion 322 to achieve good limiting installation of both the battery module assembly 3 and the housing assembly 1.

[0055] Of course, in other implementation manners, the limiting member 2 may have a limiting hole, and the housing assembly 1 may have a limiting portion.

[0056] For the energy storage battery pack provided in this embodiment, by providing the housing assembly 1, the limiting member 2 and the battery module assembly 3, the battery module assembly 3 is provided with a first limiting portion 321 and a second limiting portion 322, and the first limiting portion 321 and the second limiting portion 322 are arranged oppositely along the first direction on both sides of at least part of the housing assembly 1 to limit the housing assembly 1. That is, the first limiting portion 321 and the second limiting portion 322 on the battery module assembly 3 can achieve the limiting and fixing of the battery module assembly 3 and the housing assembly 1 in the first direction. At the same time, by connecting the limiting member 2 with the battery module assembly 3, and one of the housing assembly 1 and the limiting member 2 has a limiting hole 110, and the other of the housing assembly 1 and the limiting member 2 has a limiting portion 21. By making the limiting member 2 movable relative to the battery module assembly 3, the limiting portion 21 is inserted into the limiting hole 110. When the limiting member 2 is inserted into the limiting hole 110, the central axis of the limiting hole 110 is not perpendicular to the first direction. Thus, through the cooperation between the limiting member 2 and the limiting hole 110, the relative fixing and reliable connection of the battery module assembly 3 and the housing assembly 1 in the other two directions not perpendicular to the first direction are realized, and further the fixing of the battery module assembly 3 and the housing assembly 1 is realized.

[0057] Compared with the method of fixing the battery module assembly and the housing assembly by bolts, in this embodiment, the housing assembly 1 and the connected battery module assembly 3 are limited in three directions to realize the connection between the two. In this way, the blind installation of the two can be realized to a certain extent, that is, the battery module assembly 3 and the housing assembly 1 can be conveniently installed without operations such as aligning the threaded holes for passing bolts on the battery module assembly 3 and the housing assembly 1, thereby improving the installation efficiency of the two to a certain extent.

[0058] In some embodiments, the battery module assembly 3 includes a fixing body 30 connected to the battery module. A first limiting portion 321 and a second limiting portion 322 are located on the fixing body 30, and the limiting member 2 is connected to the fixing body 30. The fixing body 30 is disposed near the bottom of the battery module.

[0059] In this way, compared with the solution of connecting the battery module assembly and the housing assembly with bolts, it is possible to avoid, to a certain extent, the situation where the installation of the bolts on the side close to the ground of the battery module assembly 3 and the housing assembly 1 is restricted due to line-of-sight limitations, thereby improving the installation efficiency of the two to a certain extent.

[0060] In some embodiments, referring to Figures 2 to 8 As shown, the limiting member 2 is rotationally engaged with the battery module assembly 3. When the limiting member 2 extends into the limiting hole 110, the rotation axes of the limiting member 2 and the battery module assembly 3 intersect with the central axis of the limiting hole 110. Among them, the extending direction of the rotation axes of the limiting member 2 and the battery module assembly 3 can specifically refer to the Z direction shown in Figure 2 、 Figures 6 to 8 As shown.

[0061] In this way, by rotating the limiting member 2 relative to the battery module assembly 3, the limiting portion 21 can be driven to penetrate and move out of the limiting hole 110, so as to facilitate the cooperation between the limiting hole 110 and the limiting portion 21 to limit the battery module assembly 3 and the housing assembly 1, and the limiting is convenient and easy to operate.

[0062] Of course, in other implementation manners, the limiting member 2 can also be moved relative to the battery module assembly 3, or the limiting member 2 can be a telescopic structure.

[0063] Exemplarily, the limiting portion 21 can be a limiting pin, a limiting protrusion, etc.

[0064] In some embodiments, referring to Figures 2 to 8 As shown, the fixing body 30 includes a fixing member 31 and a main body portion 32 that are detachably connected. The limiting member 2 has a shaft hole 22 for the fixing member 31 to extend into, and the limiting member 2 is rotationally engaged with the shaft hole 22. The first limiting portion 321 and the second limiting portion 322 are located on the main body portion 32. Exemplarily, the main body portion 32 can be connected to the battery module.

[0065] With such a setting, while realizing the rotational engagement between the limiting member 2 and the fixing body 30, it is also possible to achieve the detachable connection of the fixing member 31, the main body portion 32, and the limiting member 2 to a certain extent. When one of the fixing member 31, the main body portion 32, and the limiting member 2 is damaged, only the damaged component needs to be replaced, thereby avoiding the overall scrapping of the fixing member 31, the main body portion 32, and the limiting member 2 to a certain extent, which is beneficial to saving the maintenance cost.

[0066] Of course, the battery module assembly 3 may also be provided with a shaft hole 22, and the limiting member 2 extends into the shaft hole 22 and is rotatably engaged with the shaft hole 22.

[0067] In some embodiments, the fixing member 31 and the main body portion 32 are detachably connected by a threaded fit. In this way, the connection between the fixing member 31 and the main body portion 32 is simple, convenient, and has high connection reliability, thereby ensuring the stability of the rotation of the limiting member 2 relative to the main body portion 32 to a certain extent, and further enabling the convenient and stable limiting installation of the battery module and the housing assembly 1.

[0068] Exemplarily, with reference to Figure 4 as shown, specifically, the fixing member 31 may have a connecting portion 313 provided with an external thread and a smooth shaft portion 312 not provided with an external thread, and an assembly hole 328 mating with the external thread is provided on the main body portion 32, and the smooth shaft portion 312 is correspondingly inserted into the shaft hole 22 of the limiting member 2.

[0069] Exemplarily, the fixing member 31 and the main body portion 32 may be pre-connected together before leaving the factory, so that when the installer installs the housing assembly 1 and the battery module assembly 3, tools such as a screwdriver and an electric screwdriver are not required, thereby reducing the installation cost to a certain extent.

[0070] Of course, the fixing member 31 may also have an internal threaded hole, and an external threaded post or the like may be provided on the main body portion 32.

[0071] In some embodiments, with reference to Figures 4 to 8 as shown, the battery module assembly 3 is provided with a first positioning surface 311 and a second positioning surface 323 arranged at intervals along the rotation axis direction of the limiting member 2, and the limiting member 2 is defined between the first positioning surface 311 and the second positioning surface 323 to limit the axial movement of the limiting member 2. Among them, the rotation axis direction of the limiting member 2 specifically refers to Figure 2 , Figures 6 to 8 the Z direction shown.

[0072] This can avoid the occurrence of accidental axial movement of the limiting member 2 to a certain extent, ensure the smoothness and reliability of the rotation of the limiting member 2, and thus improve the convenience of the cooperation between the limiting portion 21 and the limiting hole 110.

[0073] Exemplarily, the first positioning surface 311 may be located on the fixing member 31, and the second positioning surface 323 may be located on the main body portion 32.

[0074] Of course, in some other embodiments, when the battery module assembly 3 has a shaft hole, the limiting member 2 may also have a first positioning surface and a second positioning surface arranged at intervals along the rotation axis direction of the limiting member 2, and the battery module assembly 3 is limited between the first positioning surface and the second positioning surface.

[0075] In some embodiments, as shown in Figures 2 to 8 , a limiting groove 324 extending in the second direction is formed in the battery module assembly 3, and the limiting groove 324 is used for the housing assembly 1 to extend into. In the first direction, the limiting groove 324 has opposite first and second groove walls. The first groove wall forms a first limiting portion 321, and the second groove wall forms at least a part of a second limiting portion 322. Wherein, the second direction is perpendicular to the first direction. Specifically, the second direction may be Figure 2 , Figures 6 to 8 the Z direction shown in

[0076] With such a setting, the housing assembly 1 can be limited in the first direction through the limiting groove 324. The limiting process is simple and convenient, and the contact area with the housing assembly 1 can be increased through the cooperation of the first groove wall and the second groove wall, so as to improve the limiting effect to a certain extent.

[0077] Of course, the first limiting portion 321 and the second limiting portion 322 may also be limiting protrusions or the like.

[0078] Specifically, when the battery module assembly 3 includes a fixing member 31 and a main body portion 32, the limiting groove 324 is specifically provided on the main body portion 32.

[0079] In some embodiments, as shown in Figures 2 to 8 , the limiting groove 324 extends through the battery module assembly 3 in the second direction, so that a part of the housing assembly 1 extends out of the battery module assembly 3 through the limiting groove 324. The limiting hole 110 is specifically provided on the part of the housing assembly 1 that extends out of the battery module assembly 3.

[0080] With such a setting, it is convenient to make the housing assembly 1 extend out of the limiting groove 324 to achieve positioning in the first direction, and then cooperate the limiting portion 21 and the limiting hole 110 on the outside of the battery module assembly 3, so as to improve the convenience of the movement of the limiting member 2 while ensuring the limiting effect.

[0081] In some embodiments, in the third direction, the size of the limiting groove 324 is adapted to the size of the part of the housing assembly 1 extending into the limiting groove 324. Wherein, the third direction intersects the first direction and is perpendicular to the second direction. Among them, the third direction may be Figure 2 , Figures 6 to 8 the Y direction shown in

[0082] With such a setting, the limiting groove 324 can not only limit the housing assembly 1 and the battery module assembly 3 in the first direction, but also limit the battery module assembly 3 and the battery module assembly 3 in the third direction, which is beneficial to improving the limiting effect of the housing assembly 1 and the battery module assembly 3 in the third direction and further ensuring the stability of their installation.

[0083] In some embodiments, referring to Figures 2 to 8 As shown, the battery module assembly 3 has a hollow cavity 325, and the housing assembly 1 includes a first limiting portion 111 and a second limiting portion 112. A limiting groove 324 and a mounting hole 326 communicating with the limiting groove 324 are provided on the cavity wall of the cavity 325, and the first limiting portion 111 can extend into the limiting groove 324 through the mounting hole 326. Among them, the second limiting portion 112 is not perpendicular to the first limiting portion 111, and the second limiting portion 112 abuts against the outer edge of the side of the mounting hole 326 facing away from the cavity 325, so that the portion of the battery module assembly 3 that abuts against the second limiting portion 112 forms a partial second limiting portion 322.

[0084] With such a setting, by making the second limiting portion 112 abut against the outer edge of the hole wall of the mounting hole 326 and cooperating with the extension of the first limiting portion 111 into the limiting groove 324, the limiting effect of the housing assembly 1 and the battery module assembly 3 in the first direction can be further improved. The structure of the housing assembly 1 is simple and the limiting effect is good.

[0085] Specifically, when the battery module assembly 3 includes a fixing member 31 and a main body portion 32, the mounting hole 326 is specifically provided on the main body portion 32.

[0086] Exemplarily, during installation, the first limiting portion 111 can be first extended into the limiting groove 324 through the mounting hole 326, and after the first limiting portion 111 extends into the limiting groove 324 in place, the limiting member 2 is moved relative to the battery module assembly 3 to realize the cooperation between the limiting portion 21 and the limiting hole 110. Finally, the installation of the battery module assembly 3 and the housing assembly 1 is realized through the limiting in three directions.

[0087] In some embodiments, referring to Figures 2 to 3 As shown, in the direction away from the limiting groove 324, at least part of the mounting hole 326 gradually increases in diameter in the third direction.

[0088] With such a setting, when the first limiting portion 111 extends into the limiting groove 324 from the mounting hole 326, it can enter the mounting hole 326 from a position with a larger diameter on the side of the mounting hole 326 away from the limiting groove 324, which can, to a certain extent, improve the convenience of the first limiting portion 111 extending into the limiting groove 324 through the mounting hole 326 and improve the installation efficiency.

[0089] Exemplarily, the minimum aperture of the mounting hole 326 in the third direction may be not less than the width dimension of the first limiting portion 111, further improving the convenience of the first limiting portion 111 extending into the limiting groove 324.

[0090] In some embodiments, referring to Figures 1 to 8 As shown, the housing assembly 1 further includes an intermediate limiting portion 113 connected between the first limiting portion 111 and the second limiting portion 112. The mounting hole 326 has a limiting hole section 327 extending in a direction approaching the limiting groove 324. When the first limiting portion 111 extends into the limiting groove 324, at least a part of the intermediate limiting portion 113 is located in the limiting hole section 327.

[0091] In this way, through the cooperation of the intermediate limiting portion 113 and the limiting hole section 327, the limiting effect between the battery module assembly 3 and the housing assembly 1 in the third direction can be further improved to a certain extent, further enhancing the stability and reliability of the connection between the battery module assembly 3 and the housing assembly 1.

[0092] In some embodiments, in the third direction, the size of the intermediate limiting portion 113 is adapted to the aperture of the limiting hole section 327. This can further improve the limiting effect of the limiting hole section 327 on the intermediate limiting portion 113, thereby further enhancing the limiting effect between the battery module assembly 3 and the housing assembly 1 in the third direction.

[0093] During specific implementation, the first limiting portion 111, the second limiting portion 112, and the intermediate limiting portion 113 may be integrally formed, so that the overall structural strength of the housing assembly 1 is high and subsequent assembly is convenient.

[0094] Exemplarily, referring to Figure 1 As shown, a flanging 114 may be provided on the second limiting portion 112. For example, a decorative plate or the like may be connected to the flanging 114 for decoration.

[0095] In some embodiments, referring to Figures 1 to 8 As shown, the housing assembly 1 includes a housing (not shown in the figure) and a fixing bracket 11 connected to the housing. The limiting hole 110 is provided on the fixing bracket 11, and the first limiting portion 321 and the second limiting portion 322 are oppositely arranged on both sides of the fixing bracket 11.

[0096] In this way, the limiting installation between the housing and the battery module can be realized through the limiting between the fixing bracket 11 and the battery module assembly 3, which is convenient to use.

[0097] Specifically, the fixing bracket 11 includes the above-mentioned first limiting portion 111, second limiting portion 112, and intermediate limiting portion 113.

[0098] Of course, in other implementation manners, when the limiting part is arranged on the housing assembly 1, specifically, the limiting part is arranged on the fixing bracket 11.

[0099] In some embodiments, referring to Figure 1 , Figures 6 to 8 As shown, the fixing bracket 11 has a welding surface 115, and the housing is welded at the welding surface 115. In this way, the connection of the housing on the fixing bracket 11 is realized by welding, the connection is reliable, and through the arrangement of the welding surface 115, the contact area between the fixing bracket 11 and the housing can be increased to a certain extent, thereby further improving the reliability of the connection between the two.

[0100] In some embodiments, referring to Figures 5 to 8 As shown, a holding part 23 is arranged on the limiting member 2, and the holding part 23 is used for being held to drive the limiting member 2 to move relative to the battery module assembly 3.

[0101] With this arrangement, it is convenient to hold the holding part 23 to realize the movement of the limiting member 2 relative to the battery module assembly 3, and further to make the limiting part 21 cooperate with or disengage from the limiting hole 110, which is more convenient to use.

[0102] Exemplarily, the holding part 23 can be a holding tab, for example, the holding tab can be integrally formed with the limiting member 2.

[0103] Of course, the holding part 23 can also be a holding groove or the like.

[0104] In this document, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations. In addition, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application 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 a limitation to this application.

[0105] In this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0106] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An energy storage battery pack, characterized in that: It comprises a housing assembly (1), a stopper (2) and a battery module assembly (3); The battery module assembly (3) has a first limiting portion (321) and a second limiting portion (322), wherein the first limiting portion (321) and the second limiting portion (322) are arranged relatively on two sides of the housing assembly (1) along a first direction to limit the housing assembly (1); The limiting member (2) is connected to the battery module assembly (3); one of the housing assembly (1) and the limiting member (2) is provided with a limiting hole (110); the other of the housing assembly (1) and the limiting member (2) is provided with a limiting portion (21); the limiting member (2) can move relative to the battery module assembly (3) so that the limiting portion (21) extends into the limiting hole (110); and when the limiting member (2) extends into the limiting hole (110), the central axis of the limiting hole (110) is not perpendicular to the first direction.

2. The energy storage battery pack according to claim 1, characterized in that: The limiting member (2) is rotationally matched with the battery module assembly (3); When the limiting member (2) extends into the limiting hole (110), the rotation axes of the limiting member (2) and the battery module assembly (3) intersect with the central axis of the limiting hole (110).

3. The energy storage battery pack according to claim 2, characterized in that: The battery module assembly (3) comprises a battery module and a fixed body (30) connected to each other; the fixed body (30) comprises a detachably connected fixing member (31) and a main body (32); The limiting member (2) is connected to the main body (32); the limiting member (2) has an axial hole (22) for the fixing member (31) to extend therein, and the limiting member (2) is rotatably matched with the axial hole (22); the first limiting portion (321) and the second limiting portion (322) are located on the main body (32); The fixing member (31) and the main body (32) are detachably connected by means of threaded engagement.

4. The energy storage battery pack according to claim 2, characterized in that: One of the position-limiting member (2) and the battery module assembly (3) has an axial hole (22), and the other of the position-limiting member (2) and the battery module assembly (3) extends into the axial hole (22) and is rotatably matched with the axial hole (22); The other of the limiting member (2) and the battery module assembly (3) has a first positioning surface (311) and a second positioning surface (323) arranged at intervals along the rotation axis direction of the limiting member (2), and the limiting member (2) and the battery module assembly (3) are confined between the first positioning surface (311) and the second positioning surface (323) to limit the axial movement of the limiting member (2).

5. The energy storage battery pack according to any one of claims 1 to 4, characterized in that: The battery module assembly (3) is provided with a limiting groove (324) extending along the second direction, and the limiting groove (324) is used for the housing assembly (1) to extend into; In the first direction, the limiting groove (324) has a first groove wall and a second groove wall opposite to each other; the first groove wall is formed as the first limiting portion (321), and the second groove wall is formed as at least a part of the second limiting portion (322); The second direction is perpendicular to the first direction.

6. The energy storage battery pack according to claim 5, characterized in that: The limiting groove (324) is arranged to penetrate the battery module assembly (3) along the second direction, so that a portion of the housing assembly (1) extends through the limiting groove (324) to the outside of the battery module assembly (3); One of the limiting hole (110) and the limiting portion (21) is arranged on a portion of the housing assembly (1) extending to the outside of the battery module assembly (3).

7. The energy storage battery pack according to claim 5, characterized in that: The battery module assembly (3) has a hollow cavity (325), and the housing assembly (1) comprises a first limiting portion (111) and a second limiting portion (112); the limiting groove (324) and a mounting hole (326) connected to the limiting groove (324) are provided on the cavity wall of the cavity (325), and the first limiting portion (111) can extend into the limiting groove (324) through the mounting hole (326); The second limiting portion (112) is not perpendicular to the first limiting portion (111), and the second limiting portion (112) abuts against an outer edge of a side of the mounting hole (326) away from the cavity (325), so that a portion of the battery module assembly (3) abutting against the second limiting portion (112) forms a portion of the second limiting portion (322).

8. The energy storage battery pack according to claim 7, characterized in that: In a direction away from the limiting groove (324), the diameter of at least part of the mounting holes (326) along the third direction gradually increases; The third direction intersects with the first direction and is perpendicular to the second direction.

9. The energy storage battery pack according to claim 7, characterized in that: The housing assembly (1) further comprises an intermediate limiting portion (113) connected between the first limiting portion (111) and the second limiting portion (112); The mounting hole (326) has a limiting hole section (327) extending in a direction close to the limiting groove (324); when the first limiting portion (111) extends into the limiting groove (324), at least a portion of the middle limiting portion (113) is located in the limiting hole section (327); In the third direction, the size of the intermediate limiting portion (113) is adapted to the aperture of the limiting hole section (327); wherein the third direction intersects with the first direction and is perpendicular to the second direction.

10. The energy storage battery pack according to any one of claims 1 to 4, characterized in that: The housing assembly (1) comprises a housing and a fixing bracket (11) connected to the housing; one of the limiting hole (110) and the limiting portion (21) is arranged on the fixing bracket (11), and the first limiting portion (321) and the second limiting portion (322) are arranged on two sides of the fixing bracket (11) opposite to each other; The fixing bracket (11) has a welding surface (115), and the shell is welded at the welding surface (115); And / or, the limiting member (2) is provided with a gripping portion (23), and the gripping portion (23) is used for being gripped to drive the limiting member (2) to move relative to the battery module assembly (3); And / or, the battery module assembly (3) comprises a battery module and a fixed body (30) connected to each other, the first limiting portion (321) and the second limiting portion (322) are located on the fixed body (30), and the limiting member (2) is connected to the fixed body (30); and the fixed body (30) is arranged close to the bottom of the battery module.

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