Battery rack

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery rack, which comprises a support frame, a mounting plate and a rolling assembly, the mounting plate is arranged on the support frame, and a plurality of communication ports are arranged on the mounting plate along a first direction in a penetrating manner; the rolling assembly is detachably connected to the supporting frame, the rolling assembly comprises a driving piece and a plurality of rolling pieces, the driving piece is used for driving the rolling pieces to move in the first direction, at least part of the rolling pieces can penetrate out of the communication opening, and the battery pack abuts against the rolling pieces protruding out of the first side face so as to be slidably installed above the first side face. According to the battery rack disclosed by the utility model, through the arrangement of the rolling assembly, the driving piece can enable the rolling piece to extend out of the first side surface, so that an operator can conveniently mount the battery pack on the first side surface along the rolling piece, the friction loss between the battery pack and the mounting plate is reduced, the service lives of the battery pack and the mounting plate are prolonged, time and labor are saved, and the mounting is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery rack. Background Art

[0002] In recent years, new energy technologies have been continuously developed, and battery energy storage systems have also developed rapidly. They have been widely used in many fields such as new energy vehicles and photovoltaic energy storage. In order to ensure the energy density of the battery energy storage system, the battery energy storage system usually includes a battery rack and multiple battery packs installed on the battery rack. However, at present, the installation of the battery pack is that multiple operators cooperate to directly support one end of the battery pack on the mounting plate on the battery rack, and then gradually push the battery pack as a whole. The existing technology has the following defects: the battery pack is heavy, and multiple operators are required to cooperate to push the battery pack to slide along the surface of the mounting plate so that the battery pack can be completely installed on the mounting plate. There is a lot of manual input, and the wear between the battery pack and the mounting plate is large, which can easily cause damage to the battery pack, affecting product quality, time-consuming and labor-intensive, and inconvenient to install. Utility Model Content

[0003] The utility model aims to provide a battery rack with a simple structure and capable of utilizing a rolling assembly to reduce the friction between a battery pack and a mounting plate, thereby saving time and effort and being convenient to install.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A battery rack is provided, comprising a support frame, a mounting plate and a rolling assembly, wherein the mounting plate is arranged on the support frame, and the mounting plate has a first side surface and a second side surface arranged opposite to each other along a first direction, the first side surface is used to install a battery pack, and a plurality of connecting ports are arranged on the mounting plate along the first direction; the rolling assembly is detachably connected to the support frame, the rolling assembly comprises a driving member and a plurality of rolling members, the driving member is used to drive all of the rolling members to move along the first direction, the rolling member can at least partially pass through the connecting port and extend out of the first side surface, and one end of the rolling member protruding from the first side surface is connected to the battery pack.

[0006] As a preferred solution of the battery rack, at least two rolling assemblies are arranged on the support frame at intervals along the second direction, and each rolling assembly includes a plurality of rolling members arranged at intervals along the third direction, wherein the first direction, the second direction and the third direction are arranged at angles to each other.

[0007] As a preferred solution of the battery rack, the support frame is provided with a placement cavity, and the length of the placement cavity extends along the third direction, and the support frame is also provided with a mounting port communicating with the placement cavity on one side along the third direction, and the rolling assembly is inserted into the placement cavity through the mounting port, and the placement cavity is communicated with the communicating port.

[0008] As a preferred solution of the battery rack, the rolling assembly also includes a base, the length of the base extends along the third direction, the driving member and the rolling member are both arranged on the base, the base is inserted into the placement cavity, the outer peripheral side of the base has at least a first anti-rotation surface, the placement cavity is provided with a second anti-rotation surface corresponding to the first anti-rotation surface, and the first anti-rotation surface abuts against the second anti-rotation surface.

[0009] As a preferred solution of the battery rack, the driving member includes a screw rod and a plurality of wedge blocks, the screw rod is rotatably connected to the base, all the wedge blocks are threadedly connected to the screw rod, and the screw rod is rotated to enable the wedge blocks to move along the third direction, the screw rod has a driving end, and the wedge blocks are at least partially inclined on a side adjacent to the mounting plate, and a first inclined surface of the wedge block is inclined from an end adjacent to the driving end toward a direction away from the driving end and away from the mounting plate, and the rolling member slidably cooperates with the first inclined surface.

[0010] As a preferred solution of the battery rack, the base is provided with a accommodating cavity, a first through hole and a plurality of second through holes respectively communicated with the accommodating cavity, the first through hole at least penetrates one side surface of the base along the third direction, the second through hole penetrates one side surface of the base adjacent to the mounting plate along the first direction, all of the wedge blocks are slidably arranged in the accommodating cavity along the third direction, the driving end extends to the outside of the accommodating cavity through the first through hole, and the rolling element can at least partially extend to the outside of the accommodating cavity through the second through hole.

[0011] As a preferred solution of the battery rack, the rolling assembly also includes a slider and a limit block arranged in the accommodating cavity, the limit block is spaced apart from the cavity wall of the base provided with the second through hole, and the limit block is provided with a limit hole corresponding to the second through hole, the slider is slidably matched with the limit hole, the rolling member is rotatably connected to the slider, and the slider is slidably matched with the first inclined surface.

[0012] As a preferred solution for the battery rack, a limiting portion is protrudingly provided on the outer peripheral side of the sliding block, and the limiting portion is arranged between the limiting block and the cavity wall of the accommodating cavity provided with the second through hole.

[0013] As a preferred solution of the battery rack, the rolling element is a roller, and the rotation axis of the roller extends along the second direction; or,

[0014] The rolling element is a ball, and the ball is rotatably arranged at the driving end of the driving element; and / or,

[0015] The distance between two adjacent rolling elements along the third direction is no more than 300 mm.

[0016] As a preferred solution of the battery rack, the battery rack also includes a guide assembly, the battery pack is installed on the first side along a third direction, at least two groups of the guide assemblies are arranged on the mounting plate along the third direction, each group of the guide assemblies includes two guide plates arranged along a second direction, and a second inclined surface is provided on one side of the two guide plates adjacent to each other, and a guide groove is formed by the two second inclined surfaces, and the size of the guide groove gradually decreases along the installation direction of the battery pack.

[0017] The beneficial effects of the utility model are as follows: through the setting of the rolling component, the driving member can make the rolling member extend out of the first side surface, so that the operator can install the battery pack along the rolling member to the first side surface, thereby reducing the friction loss between the battery pack and the mounting plate, and improving the service life of the battery pack and the mounting plate, saving time and labor, and facilitating installation. One operator can easily complete the installation by pushing the device, thereby reducing the investment in labor costs, and the driving member can make the rolling member shrink to the first side surface, so that the battery pack abuts against the mounting plate, thereby improving the installation stability of the battery pack, reducing the continuous support of the rolling member, and ensuring the service life of the rolling component; by making the rolling component and the support member detachable, the reusability of the rolling component can be improved, and the use efficiency of the rolling component can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below based on the drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of a battery rack according to an embodiment of the utility model;

[0020] Figure 2 It is a disassembly schematic diagram of a battery rack according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a rolling assembly according to an embodiment of the utility model;

[0022] Figure 4 is a cross-sectional view of a rolling assembly according to an embodiment of the utility model (in a mating state);

[0023] Figure 5 It is an exploded schematic diagram of a rolling assembly of an embodiment of the utility model;

[0024] Figure 6 It is a cross-sectional view of the rolling assembly of the embodiment of the utility model (exploded state).

[0025] In the figure:

[0026] 1. Support frame; 11. Placement cavity; 2. Mounting plate; 21. First side; 22. Connecting port; 3. Rolling assembly; 31. Driving member; 311. Screw; 3111. Driving end; 312. Wedge block; 3121. First inclined surface; 32. Rolling member; 33. Base; 331. Accommodating cavity; 332. First through hole; 333. Second through hole; 34. Slider; 341. Limiting portion; 35. Limiting block; 351. Limiting hole; 4. Guide plate. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] like Figure 1 and Figure 2 As shown, the battery rack of an embodiment of the utility model includes a support frame 1, a mounting plate 2 and a rolling assembly 3, the mounting plate 2 is arranged on the support frame 1, and the mounting plate 2 has a first side surface 21 and a second side surface arranged relatively along a first direction (the first direction is the X direction shown in the figure, that is, the vertical direction), the first side surface 21 is used to install the battery pack, and a plurality of connecting ports 22 are arranged on the mounting plate 2 along the first direction; the rolling assembly 3 is detachably connected to the support frame 1, and the rolling assembly 3 includes a driving member 31 and a plurality of rolling members 32, and the driving member 31 in the installed state is used to drive all the rolling members 32 to move along the first direction, and the rolling member 32 can at least partially extend out of the first side surface 21 through the connecting port 22, and the end of the rolling member 32 protruding from the first side surface 21 is connected to the battery pack, that is, the battery pack abuts against the rolling member 32 protruding from the first side surface 21 to be slidably installed above the first side surface 21.

[0032] It can be understood that the support frame 1 is used to support the battery pack, so that the battery pack is spaced from the ground or between the battery packs to ensure the safety of the battery pack. In this embodiment, the battery frame is constructed of multiple square steel pipes. The rolling assembly 3 has an installed state and an initial state. In the installed state, the driving member 31 drives the rolling member 32 to extend through the connecting port 22 to the first side surface 21. In the initial state, the driving member 31 drives the rolling member 32 to completely retract below the first side surface 21 so that the battery pack abuts against the first side surface 21. Through the setting of the rolling assembly 3, the driving member 31 can make the rolling member 32 extend out of the first side surface 21, so that the operator can install the battery pack on the first side surface 21 along the rolling member 32, thereby reducing the friction loss between the battery pack and the mounting plate 2, and improving the service life of the battery pack and the mounting plate 2, saving time and effort, and facilitating installation. One operator can easily complete the installation by pushing, reducing the investment in labor costs, and avoiding the situation where the operator uses brute force and is easily injured; and the driving member 31 can make the rolling member 32 shrink to the first side surface 21, so that the battery pack abuts against the mounting plate 2, thereby improving the installation stability of the battery pack, reducing the continuous support of the rolling member 32, and ensuring the service life of the rolling assembly 3; by making the rolling assembly 3 and the support member detachable, the reusability of the rolling assembly 3 can be improved, and the use efficiency of the rolling assembly 3 can be improved.

[0033] Optionally, the battery pack is mounted on the first side surface 21 along a third direction (the third direction is the Y direction shown in the figure), and at least two rolling assemblies 3 are arranged at intervals along the second direction on the support frame 1 (the second direction is the Z direction shown in the figure), and each rolling assembly 3 includes a plurality of rolling members 32 arranged at intervals along the third direction, wherein the first direction, the second direction and the third direction are arranged at angles to each other. In this embodiment, two groups of rolling assemblies 3 are arranged at intervals along the second direction on the support frame 1, and each group of rolling assemblies 3 is respectively adjacent to both sides of the mounting plate 2 along the third direction to ensure the movement balance when the battery pack is pushed onto the mounting plate 2. Of course, in order to further ensure the load-bearing safety of each rolling assembly 3 and the stability of the battery pack, three, four or more groups of rolling assemblies 3 can be set.

[0034] Further, the support frame 1 is provided with a placement cavity 11, and the length of the placement cavity 11 extends along the third direction. The support frame 1 is also provided with a mounting port communicating with the placement cavity 11 on one side along the third direction. The rolling assembly 3 is inserted into the placement cavity 11 through the mounting port, and the placement cavity 11 is communicated with the communication port 22. That is, the rolling assembly 3 is inserted into the placement cavity 11 to complete the connection between the rolling assembly 3 and the support frame 1, which is convenient for disassembly and assembly. The cavity wall of the placement cavity 11 adjacent to the mounting plate 2 is provided with a connection hole corresponding to the communication port 22, so that the rolling member 32 in the placement cavity 11 can sequentially pass through the connection hole and the communication port 22 and extend out of the first side surface 21.

[0035] Furthermore, if Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the rolling assembly 3 also includes a base 33, the length of which extends along the third direction, the driving member 31 and the rolling member 32 are both arranged on the base 33, the base 33 is inserted into the placement cavity 11, the outer peripheral side of the base 33 has at least a first anti-rotation surface, the placement cavity 11 is provided with a second anti-rotation surface corresponding to the first anti-rotation surface, and the first anti-rotation surface abuts against the second anti-rotation surface. Through the arrangement of the base 33, multiple structures of the rolling assembly 3 are integrated into the base 33, improving the integrity of the rolling assembly 3, that is, the installation of the entire rolling assembly 3 is completed by connecting the base 33 with the placement cavity 11.

[0036] Of course, in order to further ensure the installation stability of the rolling assembly 3, a threaded hole can be provided on the support frame 1 so that a bolt passes through the threaded hole and is pressed against the base 33, or a buckle structure can be provided to be clamped with the base 33. The structural setting of the first anti-rotation surface and the second anti-rotation surface can effectively improve the installation stability of the base 33 and prevent the base 33 from rotating. In this embodiment, the placement cavity 11 is a square cavity and the base 33 is a square block. Therefore, by using the restriction of the square block and the square cavity wall, the relative position stability between the two can be ensured, the occurrence of rotation can be reduced, and the installation accuracy of the rolling assembly 3 can be improved.

[0037] Furthermore, if Figure 4 , Figure 5 and Figure 6 As shown, the driving member 31 includes a screw rod 311 and a plurality of wedge blocks 312. The screw rod 311 is rotatably connected to the base 33. All the wedge blocks 312 are threadedly connected to the screw rod 311. Rotating the screw rod 311 allows the wedge blocks 312 to move along a first direction. The screw rod 311 has a driving end 3111. The wedge blocks 312 are at least partially inclined on a side adjacent to the mounting plate 2. The first inclined surface 3121 of the wedge block 312 is inclined from an end adjacent to the driving end 3111 toward a direction away from the driving end 3111 and away from the mounting plate 2. The rolling member 32 slidably cooperates with the first inclined surface 3121. In this embodiment, the operator manually rotates the driving end 3111 of the screw 311 to drive the wedge block 312 to move along the third direction, thereby driving the rolling element 32 abutting against the first inclined surface 3121 of the wedge block 312 to move upward along the first inclined surface 3121 to extend out of the connecting port 22 or move downward to shrink in the connecting port 22. The manual control accuracy is well controlled, and the first inclined surface 3121 is used to convert the movement of the wedge block 312 along the third direction into driving the rolling element 32 along the vertical direction. Of course, in other embodiments, a motor drive can be set at the driving end 3111 of the screw 311. In addition to the screw 311 and the wedge block 312, the driving element 31 can also be a plurality of linear drive mechanisms such as cylinders, oil cylinders, and electric cylinders.

[0038] Furthermore, if Figure 5 and Figure 6 As shown, the base 33 is provided with a receiving cavity 331, a first through hole 332 and a plurality of second through holes 333 respectively communicating with the receiving cavity 331, the first through hole 332 at least penetrates one side of the base 33 along the third direction, the second through hole 333 penetrates one side of the base 33 adjacent to the mounting plate 2 along the first direction, all wedge blocks 312 are slidably arranged in the receiving cavity 331 along the third direction, the driving end 3111 extends to the outside of the receiving cavity 331 through the first through hole 332, and the rolling element 32 at least partially extends to the outside of the receiving cavity 331 through the second through hole 333. By setting the receiving cavity 331, the driving element 31 can be arranged in the receiving cavity 331, thereby improving the protection of the driving element 31, and the rolling element 32 can be retracted in the receiving cavity 331 in the initial state, and the base 33 is moved to realize the overall movement of the rolling assembly 3, thereby improving the overall movement convenience of the rolling assembly 3. Furthermore, the wedge block 312 can be guided and restricted by the cavity wall of the accommodating cavity 331 , thereby improving the moving stability of the wedge block 312 .

[0039] In this embodiment, the cross-section of the accommodating cavity 331 along the second direction is square, that is, the accommodating cavity 331 is a square chamber, and the cross-section of the wedge block 312 along the second direction is also square. By utilizing the cooperation between the square block and the square cavity wall, it is possible to avoid the synchronous rotation of the wedge block 312 when the screw 311 rotates, thereby improving the position stability of the wedge block 312. That is, by utilizing the restriction of the square cavity wall on the wedge block 312, the screw 311 drives the wedge block 312 to move only along the length direction of the accommodating cavity 331, that is, the first direction.

[0040] Furthermore, if Figure 4 , Figure 5 and Figure 6 As shown, the rolling assembly 3 further includes a slider 34 and a stopper 35 disposed in the accommodating cavity 331. The stopper 35 is spaced apart from the cavity wall of the base 33 provided with the second through hole 333, and the stopper 35 is provided with a stopper hole 351 corresponding to the second through hole 333. The slider 34 is slidably matched with the stopper hole 351, and the rolling member 32 is rotatably connected to the end of the slider 34 away from the wedge block 312, and the slider 34 is slidably matched with the first inclined surface 3121. The arrangement of the slider 34 facilitates the installation of the rolling member 32. When the rolling member 32 adopts a ball, the ball can also be abutted against the first inclined surface 3121 of the wedge block 312, and the first inclined surface 3121 and the cavity wall of the accommodating cavity 331 are used to limit the rolling so as to realize the installation of the ball. By cooperating with the slider 34 and the limit block 35, the slider 34 is limited to move only along the first direction, thereby improving the position stability of the slider 34 and the rolling element 32 on the slider 34, that is, the screw 311 is rotated to limit the wedge block 312 by the wall of the accommodating cavity 331, so that the wedge block 312 can move along the third direction. The limit block 35 limits the slider 34, so that the slider 34 abutting against the first inclined surface 3121 of the wedge block 312 can only be transmitted along the first inclined surface 3121, so as to realize the movement in the vertical direction of the slide, so that the rolling element 32 can extend or retract in the second through hole 333.

[0041] Furthermore, a limiting portion 341 is protruding from the outer peripheral side of the slider 34, and the limiting portion 341 is disposed between the limiting block 35 and the cavity wall of the accommodating cavity 331 provided with the second through hole 333. The setting of the limiting portion 341 effectively ensures the position stability of the slider 34, prevents the slider 34 from completely falling into the accommodating cavity 331 or escaping from the second through hole 333, and improves the installation stability of the slider 34 and the rolling element 32.

[0042] In addition, in order to prevent the wedge block 312 from moving in the third direction and causing the slider 34 to be out of contact with the wedge block 312, stoppers are respectively provided at both ends of the wedge block 312 facing the slider 34 and adjacent to the third direction. The stoppers are used to stop the slider 34 to limit the moving distance of the wedge block 312, thereby ensuring the matching stability between the wedge block 312 and the slider 34.

[0043] In some embodiments, the rolling element 32 is a roller, and the rotation axis of the roller extends along the second direction. The roller is rotatably mounted on the slider 34. The rotation setting of the roller can reduce the wear between the battery pack and the roller, improve the convenience of pushing the battery pack, and save effort.

[0044] In this embodiment, the rolling element 32 is a ball, which is rotatably arranged on the driving end 3111 of the driving element 31. That is, the mounting groove is recessed on the slider 34, and the ball is embedded in the mounting groove. The ball has good rolling performance, strong bearing capacity and wear resistance.

[0045] Optionally, the spacing between two adjacent rolling elements 32 along the third direction is not greater than 300 mm. For example, the spacing between two adjacent rolling elements 32 along the third direction is 50 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, etc. If the spacing between two adjacent rolling elements 32 is too large, it is easy to cause the battery pack to be unstable, causing the battery pack to collide with the mounting plate 2 and then hit the rolling element 32. The spacing size is always sufficient to ensure the connection between the two rolling elements 32 when the battery pack is pushed, and ensure the smooth movement of the battery pack.

[0046] In other embodiments, the battery rack further includes a guide assembly, the battery pack is mounted on the first side 21 along the third direction, at least two groups of guide assemblies are arranged at intervals along the third direction on the mounting plate 2, each group of guide assemblies includes two guide plates 4 arranged at intervals along the second direction, the two guide plates 4 are arranged on one side adjacent to each other with a second inclined surface, the two second inclined surfaces are spaced to form a guide groove, the size of the guide groove gradually decreases along the installation direction of the battery pack, wherein the first direction, the second direction and the third direction are arranged at an angle to each other. The battery pack is restricted by the guide plate 4 to prevent the battery pack from sliding off the mounting plate 2, and the installation accuracy of the battery pack can be improved by guiding the installation of the battery pack by the guide groove.

[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery rack, characterized in that: include: Support frame; A mounting plate, the mounting plate being disposed in the support frame and having a first side surface and a second side surface disposed opposite to each other along a first direction, the first side surface being used for mounting a battery pack, and a plurality of communication ports being disposed through the mounting plate along the first direction; A rolling assembly, wherein the rolling assembly is detachably connected to the support frame, and the rolling assembly includes a driving member and a plurality of rolling members, wherein the driving member is used to drive all of the rolling members to move along the first direction, and the rolling member is at least partially able to extend through the connecting port to extend out of the first side surface, and one end of the rolling member protruding from the first side surface is connected to the battery pack.

2. The battery rack according to claim 1, characterized in that: At least two rolling assemblies are arranged on the support frame at intervals along the second direction, and each rolling assembly includes a plurality of rolling elements arranged at intervals along the third direction, wherein the first direction, the second direction and the third direction are arranged at angles to each other.

3. The battery rack according to claim 2, characterized in that: A placement cavity is provided in the support frame, and the length of the placement cavity extends along the third direction. A mounting port communicating with the placement cavity is also provided on one side of the support frame along the third direction. The rolling assembly is inserted into the placement cavity through the mounting port, and the placement cavity is communicated with the communicating port.

4. The battery rack according to claim 3, characterized in that: The rolling assembly also includes a base, the length of which extends along the third direction, the driving member and the rolling member are both arranged on the base, the base is inserted into the placement cavity, the outer peripheral side of the base has at least a first anti-rotation surface, the placement cavity is provided with a second anti-rotation surface corresponding to the first anti-rotation surface, and the first anti-rotation surface abuts against the second anti-rotation surface.

5. The battery rack according to claim 4, characterized in that: The driving member includes a screw rod and a plurality of wedge blocks, the screw rod is rotatably connected to the base, all the wedge blocks are threadedly connected to the screw rod, and the screw rod is rotated to enable the wedge blocks to move along the third direction. The screw rod has a driving end, and the wedge blocks are at least partially inclined on a side adjacent to the mounting plate. The first inclined surface of the wedge block is inclined from an end adjacent to the driving end toward a direction away from the driving end and away from the mounting plate, and the rolling member is slidably matched with the first inclined surface.

6. The battery rack according to claim 5, characterized in that: The base is provided with a accommodating cavity, a first through hole and a plurality of second through holes respectively communicating with the accommodating cavity, the first through hole at least penetrates through one side surface of the base along the third direction, the second through hole penetrates through one side surface of the base adjacent to the mounting plate along the first direction, all the wedge blocks are slidably arranged in the accommodating cavity along the third direction, the driving end extends to the outside of the accommodating cavity through the first through hole, and the rolling element can at least partially extend to the outside of the accommodating cavity through the second through hole.

7. The battery rack according to claim 6, characterized in that: The rolling assembly also includes a slider and a limit block arranged in the accommodating cavity, the limit block is spaced apart from the cavity wall of the base provided with the second through hole, and the limit block is provided with a limit hole corresponding to the second through hole, the slider is slidably matched with the limit hole, the rolling member is rotatably connected to the slider, and the slider is slidably matched with the first inclined surface.

8. The battery rack according to claim 7, characterized in that: A limiting portion is protrudingly provided on the outer peripheral side of the sliding block, and the limiting portion is arranged between the limiting block and the cavity wall of the accommodating cavity provided with the second through hole.

9. The battery rack according to any one of claims 2 to 8, characterized in that: The rolling element is a roller, and the rotation axis of the roller extends along the second direction; or, The rolling element is a ball, and the ball is rotatably arranged at the driving end of the driving element; and / or, The distance between two adjacent rolling elements along the third direction is no more than 300 mm.

10. The battery rack according to any one of claims 1 to 8, characterized in that: The battery rack also includes a guide assembly, the battery pack is installed on the first side along a third direction, at least two groups of the guide assemblies are arranged on the mounting plate along the third direction, each group of the guide assemblies includes two guide plates arranged along a second direction, and a second inclined surface is provided on one side of the two guide plates adjacent to each other, and a guide groove is formed by the two second inclined surfaces, and the size of the guide groove gradually decreases along the installation direction of the battery pack.

Images