Battery pack mounting structure, battery cluster and battery energy storage system

Abstract

The utility model provides a battery pack mounting structure, a battery cluster and a battery energy storage system, and belongs to the technical field of battery energy storage systems. The supporting beam extends in the front-back direction and is provided with a supporting face perpendicular to the up-down direction. A guide part is arranged above the front end of the supporting surface; the battery pack is slidably arranged on the supporting face in the front-back direction. A limiting part is arranged at the rear end of the outer side of the battery pack; when the battery pack is installed, the limiting part is inserted between the guiding part and the supporting surface so as to guide the battery pack to slide backwards. When the battery pack is mounted on the supporting beam, the limiting part is aligned with the guide space, and then the battery pack is pushed, so that the battery pack can be pushed to the supporting beam; and the guide parts and the limiting parts are matched to guide the battery packs to quickly slide to the supporting beams, so that a gap between the upper and lower battery packs can be correspondingly reduced, and the power density of the battery cluster is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery energy storage systems, and more specifically, relates to a battery pack installation structure, a battery cluster and a battery energy storage system. Background Art

[0002] Lithium-ion battery energy storage systems are mostly designed in a modular manner. In lithium-ion battery energy storage systems, the smallest unit is the battery cell. Multiple battery cells are connected in series and parallel to form a battery module. Multiple battery modules can be installed in a shell in series and parallel to form a battery pack. Then, multiple battery packs are arranged in sequence on a battery cluster rack and connected in series and parallel to form a battery cluster. Finally, multiple battery clusters are electrically connected to form a battery energy storage system.

[0003] The battery cluster rack is usually provided with multiple groups of support beams spaced apart in the vertical direction, and each group of support beams supports the bottom surface of one of the battery packs; the battery pack can slide on the support beams to install the battery pack on the support beams or detach from the support beams. Due to the heavy weight of the battery pack, and in order to increase the power density of the battery cluster, the spacing between two adjacent groups of support beams is slightly larger than the height of a single battery pack, that is, the installation space of the battery pack is small, which makes it more laborious and difficult to install the battery pack on the support beams, and it is also easy for the battery pack to collide with the battery cluster rack or other installed battery packs, causing damage to the battery pack. Utility Model Content

[0004] The purpose of the utility model is to provide a battery pack installation structure, a battery cluster and a battery energy storage system, aiming to solve the technical problem of difficulty in installing the battery pack in the prior art.

[0005] In a first aspect, an embodiment of the utility model provides a battery pack installation structure, comprising:

[0006] The support beam is extended in the front-to-back direction and has a support surface perpendicular to the up-down direction; a guide portion is provided above the front end of the support surface;

[0007] A battery pack is slidably arranged on the support surface along the front-rear direction; a rear end of the outer side surface of the battery pack has a limiting portion;

[0008] Wherein, when installing the battery pack, the limiting portion is inserted between the guide portion and the supporting surface to guide the battery pack to slide backward.

[0009] In combination with the first aspect, in a possible implementation manner, a plurality of guide portions are provided above the support surface at intervals along the front-to-back direction, and one of the guide portions is located at the front end of the support surface;

[0010] A plurality of the limiting portions are provided on the outer side of the battery pack at intervals in the front-to-back direction, wherein one of the limiting portions is located at the rear end of the outer side of the battery pack;

[0011] Wherein, after the battery pack slides into place, at least one of the limiting portions is located directly below one of the guiding portions.

[0012] In some embodiments, the number of the limiting portions is equal to the number of the guiding portions, and the limiting portions correspond to the guiding portions one by one;

[0013] Wherein, after the battery pack slides into place, each of the limiting portions is located directly below the corresponding guide portion.

[0014] In some embodiments, among the plurality of guide portions, the vertical distance from the bottom surface of each guide portion to the support surface decreases from front to back;

[0015] Among the plurality of limiting portions, the distance from the top surface of each limiting portion to the supporting surface decreases from front to back.

[0016] In combination with the first aspect, in a possible implementation manner, the battery pack installation structure further includes:

[0017] The column is extended in the up-down direction; the support beam and the guide part are both fixed on the column.

[0018] In combination with the first aspect, in a possible implementation manner, the battery pack includes:

[0019] The bottom bracket has a bottom edge with a limiting cavity opening downward, a roller group is arranged in the limiting cavity, and the roller group rolls on the supporting surface;

[0020] A top cover is buckled on the bottom bracket and forms a receiving cavity with the bottom bracket; the four edges of the bottom surface of the top cover are provided with flanges extending outward, the flanges overlap the four edges of the top surface of the bottom bracket up and down, and are connected by a plurality of fasteners; and

[0021] A plurality of battery modules are distributed in the accommodating cavity in an array shape;

[0022] Wherein, the limiting portion is arranged on the flange, and the limiting portion is connected to the flange and the top surface edge of the base through at least one of the fasteners.

[0023] In combination with the first aspect, in a possible implementation, the support beam is formed by bending a sheet metal member in one piece, and the support beam includes a first vertical plate, a U-shaped bent plate, and a second vertical plate connected in sequence;

[0024] The lower half of the first vertical plate is recessed toward the direction of the battery pack to form an inner concave portion, and the lower end of the inner concave portion and the upper end of the second vertical plate are respectively connected to the two ends of the U-shaped bent plate;

[0025] The upper plate surface of the U-shaped bending plate is the supporting surface; a reinforcing plate is also provided between the lower plate surface of the U-shaped bending plate and the inner plate surface of the second vertical plate.

[0026] In some embodiments, a downwardly inclined guide plate is provided at the front end of the U-shaped bending plate; a stop plate is provided at the rear end of the U-shaped bending plate, and a plate surface of the stop plate is perpendicular to the front-to-back direction.

[0027] The battery pack installation structure provided by the utility model has a support beam for supporting the battery pack, a limiting portion is added to the rear end of the outer side surface of the battery pack, and a guiding portion is added above the front end of the support beam, a guiding space can be formed between the guiding portion and the supporting surface of the support beam, and the limiting portion can be inserted into the guiding space; when the battery pack is installed on the support beam, the limiting portion is aligned with the guiding space, and then the battery pack is pushed to push the battery pack onto the support beam; compared with the prior art, the cooperation between the guiding portion and the limiting portion can guide the battery pack to slide quickly onto the support beam, thereby reducing the gap between the upper and lower battery packs accordingly, thereby improving the power density of the battery cluster.

[0028] In a second aspect, an embodiment of the utility model further provides a battery cluster, comprising the above-mentioned battery pack installation structure;

[0029] There are multiple battery packs spaced apart in the up-down direction, and the left and right sides of the bottom surface of each battery pack are respectively arranged on one of the support beams; the multiple support beams on the same side are connected by columns.

[0030] In a third aspect, the present invention also provides a battery energy storage system, comprising:

[0031] Cabinet; the front side panel of the cabinet is a door panel, and the rear side panel is closed; and

[0032] A plurality of groups of the above-mentioned battery clusters; the plurality of groups of the battery clusters are arranged in arrays and are respectively inside the cabinet.

[0033] The battery cluster and battery energy storage system provided by the utility model can improve the installation efficiency of the battery pack and correspondingly reduce the distance between two battery packs distributed up and down, so that the battery energy storage system has a high power density due to the adoption of the above-mentioned battery pack installation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the battery pack installation structure provided in the embodiment of the utility model Figure 1 (Only one side of the column is shown in the figure);

[0036] Figure 2 A schematic diagram of the battery pack installation structure provided in the embodiment of the utility model Figure 2 (Only one side of the column is shown in the figure);

[0037] Figure 3 A schematic diagram of the structure of a battery pack of a battery pack installation structure provided by an embodiment of the utility model;

[0038] Figure 4 A schematic structural diagram of a top cover of a battery pack of a battery pack mounting structure provided by an embodiment of the utility model;

[0039] Figure 5 A schematic diagram of the partial structure of the base of a battery pack of the battery pack mounting structure provided by an embodiment of the utility model;

[0040] Figure 6 Schematic diagram of the structure of the support beam of the battery pack installation structure provided by the embodiment of the utility model Figure 1 ;

[0041] Figure 7 Schematic diagram of the structure of the support beam of the battery pack installation structure provided by the embodiment of the utility model Figure 2 ;

[0042] Figure 8 A schematic diagram of the structure of a battery cluster provided in an embodiment of the utility model.

[0043] In the figure: 1. support beam; 11. first vertical plate; 111. inner recess; 12. U-shaped bending plate; 121. support surface; 13. second vertical plate; 14. reinforcement plate; 15. guide plate; 16. stop plate; 2. battery pack; 21. bottom bracket; 211. limiting cavity; 22. top cover; 221. flange; 23. roller group; 3. guide part; 4. limiting part; 5. column. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] Please also read Figure 1 , Figure 2 and Figure 3 , the battery pack installation structure provided by the utility model is now described. The battery pack installation structure includes a support beam 1 and a battery pack 2. The support beam 1 is extended in the front-to-back direction and has a support surface 121 perpendicular to the up-down direction; a guide portion 3 is provided above the front end of the support surface 121; the battery pack 2 is slidably provided on the support surface 121 in the front-to-back direction; a limit portion 4 is provided at the rear end of the outer side surface of the battery pack 2; wherein, when the battery pack 2 is installed, the limit portion 4 is inserted between the guide portion 3 and the support surface 121 to guide the battery pack 2 to slide backward.

[0046] The support surface 121 is used to support the battery pack 2. In order to save the installation space of the battery pack 2 and facilitate heat dissipation, the side edges of the bottom surface of the battery pack 2 are generally slid on the support surface 121. Specifically, the left and right sides of the bottom surface of the battery pack 2 are respectively supported on a support beam 1, that is, one battery pack 2 needs to be supported by two support beams 1. The above two support beams 1 serve as part of the battery cluster frame.

[0047] Specifically, the battery cluster frame includes a plurality of support beam groups spaced apart in the vertical direction, such as Figure 8 As shown, each support beam group includes two support beams 1; multiple battery packs 2 are arranged at intervals along the up and down directions, and each battery pack 2 is placed on the corresponding support beam group; multiple battery packs 2 are connected in series and parallel to form a battery cluster.

[0048] When the battery pack 2 is installed on the battery cluster rack, the battery pack 2 needs to be pushed from the front end of the support beam 1 onto the support beam 1. Since the limiting portion 4 is provided at the rear end of the outer side surface of the battery pack 2 and the guiding portion 3 is provided above the front end of the support beam 1, a guiding space can be formed between the guiding portion 3 and the supporting surface 121 of the support beam 1, and the limiting portion 4 can be inserted into the guiding space.

[0049] Specifically, when installing a single battery pack 2, after aligning the limiting portion 4 with the guide space, the installation height of the battery pack 2 is fixed, and then the battery pack 2 is pushed to be pushed onto the support beam 1. When installing multiple battery packs 2, the multiple battery packs 2 are placed on the battery cluster rack from top to bottom or from bottom to top in sequence according to the above process.

[0050] Compared with the prior art, the battery pack installation structure provided by the utility model can form a guiding space between the guide portion 3 and the supporting surface 121 of the support beam 1, and the limiting portion 4 can be inserted into the guiding space. The guiding portion 3 and the limiting portion 4 cooperate to guide the battery pack 2 to slide quickly onto the support beam 1, thereby improving the installation efficiency, and can also reduce the distance between the upper and lower support beam groups accordingly, that is, reduce the gap between the upper and lower battery packs 2, and improve the power density of the battery cluster.

[0051] In some embodiments, the guide portion 3 and the limiting portion 4 may also be provided with a Figure 2 The structure shown, see Figure 1 and Figure 2 A plurality of guide portions 3 are provided at intervals along the front-to-back direction above the support surface 121, and one of the guide portions 3 is located at the front end of the support surface 121; a plurality of limit portions 4 are provided at intervals along the front-to-back direction on the outer surface of the battery pack 2, and one of the limit portions 4 is located at the rear end of the outer surface of the battery pack 2; wherein, after the battery pack 2 slides into place, at least one limit portion 4 is located directly below one of the guide portions 3.

[0052] In addition to the guide portion 3 located at the front end, guide spaces are also formed between the remaining guide portions 3 and the support surface 121. The multiple guide spaces can form limits in the up and down directions, and the limit portion 4 located at the rear end passes through each guide space in turn, and each limit portion 4 passes through at least one guide space. The multiple limit portions 4 cooperate with the multiple guide portions 3. When the battery pack 2 is manually pushed forward or backward, the battery pack 2 can be prevented from tilting upward or shifting left and right, thereby preventing the moving battery pack 2 from colliding with the battery pack 2 above it or the battery cluster rack.

[0053] In addition, after the battery pack 2 slides into place, at least one limiting portion 4 is located directly below one of the guide portions 3. The limiting portion 4 cooperates with the guide portion 3 up and down, and can also prevent people from accidentally touching the battery pack 2, causing the battery pack 2 to be lifted upward and collide with the battery pack 2 above.

[0054] See also Figure 1 , Figure 2 and Figure 3 On the basis of the above-mentioned embodiment, the number of the limiting parts 4 is equal to the number of the guiding parts 3, and the limiting parts 4 correspond to the guiding parts 3 one by one; wherein, after the battery pack 2 slides into place, the limiting parts 4 are located below the corresponding guiding parts 3.

[0055] The limit portion 4 and the guide portion 3 correspond one by one up and down, so that multiple limit positions can be formed between the battery pack 2 and the support beam 1 in the up and down directions. When the battery pack 2 tends to be lifted upward due to human error, the upward force on the battery pack 2 can be balanced, further avoiding damage caused by contact with the battery pack 2 above.

[0056] Preferably, three limiting portions 4 are provided, respectively located at the front end, rear end and middle portion of the outer wall of the battery pack 2 ; three guiding portions 3 are also provided, respectively located at the front end, rear end and middle portion of the supporting surface 121 .

[0057] Preferably, on the basis of the above-mentioned embodiment, among the multiple guide portions 3, the vertical distance from the bottom surface of each guide portion 3 to the support surface 121 decreases from front to back, that is, the distance of the guide space in the up and down directions decreases from front to back; among the multiple limiting portions 4, the distance from the top surface of each limiting portion 4 to the support surface 121 also decreases from front to back, that is, the height of each limiting portion 4 decreases from front to back.

[0058] The distance between the front guide portion 3 and the support surface 121 is large, while the height of the rear limit portion 4 is small. When the battery pack 2 slides on the support surface 121, the rear limit portion 4 can smoothly pass through the front guide space, and the limit portion 4 will not generate friction with the guide portion 3 during movement. In addition, after the battery pack 2 is installed in place, it can also ensure that the spacing between each limit portion 4 and the corresponding guide portion 3 is roughly equal. It should be noted that if the manufacturing precision of the limit portion 4 and the guide portion 3 is high, the above gap value is very small. If the manufacturing precision of the limit portion 4 and the guide portion 3 is low, the above gap value is zero, that is, the top surface of the limit portion 4 is in contact with the bottom surface of the guide portion 3, and there is friction between the two.

[0059] Preferably, the guide part 3 is a rectangular block structure, and the guide part 3 can be arranged on the support beam 1 or on a part of the battery cluster frame other than the support beam 1. The limit part 4 is a trapezoidal block structure, and the two oblique sides of the trapezoidal block face the front-rear direction.

[0060] In some embodiments, the battery pack installation structure can also be used as follows: Figure 1 and Figure 2 The structure shown, see Figure 1 and Figure 2 The battery pack installation structure further includes a column 5. The column 5 is extended in the up-down direction; the support beam 1 and the guide part 3 are both fixed on the column 5.

[0061] The column 5 can be regarded as a part of the battery cluster frame. Specifically, the battery cluster frame includes a plurality of support beam groups arranged at intervals in the vertical direction, and also includes a plurality of columns 5. Each column 5 extends and is distributed in the vertical direction to connect a plurality of support beams 1 distributed at intervals in the vertical direction. In addition, the column 5 is also used to fix the guide part 3, which avoids fixing the guide part 3 on the support beam 1 and simplifies the structure of the support beam 1.

[0062] In some embodiments, the battery pack 2 may be configured as follows: Figure 3 , Figure 4 and Figure 5 The structure shown, see Figure 3 , Figure 4 and Figure 5 The battery pack 2 includes a bottom support 21, a top cover 22 and a plurality of battery modules. The bottom edge of the bottom support 21 has a limiting cavity 211 with an opening facing downward, and a roller group 23 is arranged in the limiting cavity 211, and the roller group 23 rolls on the supporting surface 121; the top cover 22 is buckled on the bottom support 21, and forms a receiving cavity with the bottom support 21; the four edges of the bottom surface of the top cover 22 are provided with flanges 221 extending outward, and the flanges 221 overlap the four edges of the top surface of the bottom support 21, and are connected by a plurality of fasteners; a plurality of battery modules are distributed in the receiving cavity in an array. Among them, the limiting portion 4 is arranged on the flange 221, and the limiting portion 4 is connected to the flange 221 and the top edge of the bottom support 21 by at least one fastener.

[0063] The bottom bracket 21 and the top cover 22 form an outer shell for fixing multiple battery modules, and the multiple battery modules are connected in series and parallel to form a battery pack 2. A liquid cooling plate is also provided inside the bottom bracket 21, and a cooling liquid flow channel is provided on the liquid cooling plate, and the multiple battery modules dissipate heat through liquid cooling.

[0064] A roller assembly 23 is disposed in the limiting cavity 211 of the bottom bracket 21 . Since the battery pack 2 is heavy, the roller assembly 23 can be used to replace the sliding of the battery pack 2 with rolling, so that a human can apply force to push the battery pack 2 .

[0065] In addition, flanges 221 are provided around the top cover 22, and overlapped with the edges around the top surface of the bottom support 21, which can not only ensure the sealing of the accommodating cavity and prevent impurities from entering the accommodating cavity, but also set a limiting portion 4 on the flange 221, and facilitate the connection of the top cover 22, the bottom support 21, and the top cover 22, the bottom support 21 and the limiting portion 4 through fasteners.

[0066] In some embodiments, the support beam 1 may be Figure 6 and Figure 7 The structure shown, see Figure 6 and Figure 7 The support beam 1 is formed by bending a sheet metal member as a whole, and the support beam 1 includes a first vertical plate 11, a U-shaped bending plate 12 and a second vertical plate 13 which are connected in sequence; the lower half of the first vertical plate 11 is recessed toward the direction of the battery pack 2 to form an inner recess 111, and the lower end of the inner recess 111 and the upper end of the second vertical plate 13 are respectively connected to the two ends of the U-shaped bending plate 12; the upper plate surface of the U-shaped bending plate 12 is a supporting surface 121; a reinforcing plate 14 is also provided between the lower plate surface of the U-shaped bending plate 12 and the inner plate surface of the second vertical plate 13.

[0067] The first vertical plate 11 and the second vertical plate 13 are connected to the column 5 through fasteners, that is, the first vertical plate 11 and the second vertical plate 13 serve as connecting plates to fix the entire support beam 1 on the column 5. The U-shaped bending plate 12 serves as a supporting plate for supporting the battery pack 2. In order to avoid stress concentration, the U-shaped bending plate 12 has no cavity, that is, the upper and lower plate surfaces are stacked.

[0068] The lower half of the first vertical plate 11 forms an inner concave portion 111, which is used to improve the strength of the first vertical plate 11 and prevent the first vertical plate 11 from breaking due to being too high. The reinforcing plate 14 is connected between the lower plate surface of the U-shaped bending plate 12 and the inner plate surface of the second vertical plate 13, which is used to increase the strength of the second vertical plate 13 and prevent the second vertical plate 13 from breaking due to being too high.

[0069] See also Figure 6 and Figure 7 On the basis of the above-mentioned implementation direction, a downwardly inclined guide plate 15 is provided at the front end of the U-shaped bending plate 12; a stop plate 16 is provided at the rear end of the U-shaped bending plate 12, and the plate surface of the stop plate 16 is perpendicular to the front-rear direction.

[0070] The guide plate 15 is used to guide the rear end of the bottom surface of the battery pack 2 to slide onto the support surface 121. When installing the battery pack 2, the rear end of the bottom surface of the battery pack 2 can be placed on the guide plate 15 first. Since the guide plate 15 is inclined, when the battery pack 2 is pushed, the battery pack 2 can slide smoothly into the support surface 121.

[0071] The stop plate 16 is used to lift the battery pack 2 to slide into place. When the battery pack 2 slides to the point where the rear end surface abuts against the stop plate 16 , it indicates that the battery pack 2 is installed in place to prevent the rear end of the battery pack 2 from sliding out of the support surface 121 .

[0072] See also Figure 8 Based on the same inventive concept, an embodiment of the present application also provides a battery cluster, including the above-mentioned battery pack installation structure; wherein, a plurality of battery packs 2 are arranged at intervals along the up and down directions, and the left and right sides of the bottom surface of each battery pack 2 are respectively arranged on a support beam 1; and the plurality of support beams 1 located on the same side are connected by a column 5.

[0073] Specifically, it can be understood that the battery cluster includes a plurality of battery packs 2 spaced apart in the vertical direction, and a battery cluster frame for fixing the plurality of battery packs 2, and the battery cluster frame includes a plurality of support beam groups spaced apart in the vertical direction and a plurality of columns 5 extending in the vertical direction. The left and right sides of the bottom surface of each battery pack 2 are respectively arranged on a support beam 1, and the plurality of support beams 1 on the same side are connected by the columns 5.

[0074] When installing multiple battery packs 2, the multiple battery packs 2 are placed on the battery cluster rack in order from top to bottom or from bottom to top. Specifically, when installing a single battery pack 2, after the limit portion 4 is aligned with the guide space, the installation height of the battery pack 2 is fixed, and then the battery pack 2 is pushed to push the battery pack 2 onto the support beam 1.

[0075] Compared with the prior art, the battery cluster provided by the present invention can improve the installation efficiency of the battery pack 2 and correspondingly reduce the distance between two battery packs 2 distributed vertically, so that the battery cluster has a high power density due to the adoption of the above-mentioned battery pack installation structure.

[0076] Based on the same inventive concept, the embodiment of the present application also provides a battery energy storage system, including a cabinet and the above-mentioned multiple battery clusters. The front side plate of the cabinet is a door plate, and the rear side plate is closed; the multiple battery clusters are arranged in an array in the cabinet.

[0077] The cabinet is used to enclose multiple battery clusters. The front side panel of the cabinet includes multiple door panels, each door panel corresponds to a battery cluster. When a battery cluster needs to be maintained, only the corresponding door panel needs to be opened without opening the entire front side panel.

[0078] In addition, the rear side panels of the cabinet are closed, that is, the rear side panels cannot be opened manually, so that other electrical equipment can be installed at the rear of the cabinet, or another group of the above-mentioned battery energy storage system can be installed (the rear side panels of the two groups of battery energy storage systems are arranged face to face) to improve the space utilization of the workplace of the battery energy storage system and increase the power density.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack installation structure, characterized in that: include: A support beam (1) is extended in the front-to-back direction and has a support surface (121) perpendicular to the up-down direction; a guide portion (3) is provided above the front end of the support surface (121); A battery pack (2) is slidably arranged on the support surface (121) along the front-rear direction; a rear end of the outer side surface of the battery pack (2) is provided with a limiting portion (4); Wherein, when the battery pack (2) is installed, the limiting portion (4) is inserted between the guide portion (3) and the supporting surface (121) to guide the battery pack (2) to slide backwards.

2. The battery pack installation structure according to claim 1, characterized in that: A plurality of guide portions (3) are provided above the support surface (121) at intervals along the front-to-back direction, wherein one of the guide portions (3) is located at the front end of the support surface (121); A plurality of the limiting portions (4) are provided at intervals along the front-to-back direction on the outer side surface of the battery pack (2), wherein one of the limiting portions (4) is located at the rear end of the outer side surface of the battery pack (2); Wherein, after the battery pack (2) slides into place, at least one of the limiting portions (4) is located directly below one of the guide portions (3).

3. The battery pack installation structure according to claim 2, characterized in that: The number of the limiting parts (4) is equal to the number of the guiding parts (3), and the limiting parts (4) correspond to the guiding parts (3) one by one; Wherein, after the battery pack (2) slides into place, each of the limiting portions (4) is located directly below the corresponding guide portion (3).

4. The battery pack installation structure according to claim 3, characterized in that: Among the plurality of guide portions (3), the vertical distance from the bottom surface of each guide portion (3) to the support surface (121) decreases from front to back; Among the plurality of limiting portions (4), the distance from the top surface of each limiting portion (4) to the supporting surface (121) decreases sequentially from front to back.

5. The battery pack installation structure according to claim 1, characterized in that: The battery pack installation structure also includes: The column (5) is extended in the up-down direction; the support beam (1) and the guide part (3) are both fixed on the column (5).

6. The battery pack installation structure according to claim 1, characterized in that: The battery pack (2) comprises: The bottom support (21) has a bottom edge with a limiting cavity (211) opening downward, a roller group (23) is arranged in the limiting cavity (211), and the roller group (23) rolls on the supporting surface (121); A top cover (22) is buckled on the bottom bracket (21) and forms a receiving cavity with the bottom bracket (21); the four edges of the bottom surface of the top cover (22) are provided with flanges (221) extending outward, and the flanges (221) overlap the four edges of the top surface of the bottom bracket (21) in an up-and-down manner and are connected by a plurality of fasteners; and A plurality of battery modules are distributed in the accommodating cavity in an array shape; Wherein, the limiting portion (4) is arranged on the flange (221), and the limiting portion (4) is connected to the flange (221) and the top edge of the base (21) via at least one of the fasteners.

7. The battery pack installation structure according to claim 1, characterized in that: The support beam (1) is formed by bending a sheet metal member in one piece, and the support beam (1) comprises a first vertical plate (11), a U-shaped bent plate (12), and a second vertical plate (13) which are connected in sequence; The lower half of the first vertical plate (11) is recessed in the direction of the battery pack (2) to form an inner recess (111), and the lower end of the inner recess (111) and the upper end of the second vertical plate (13) are respectively connected to the two ends of the U-shaped bent plate (12); The upper plate surface of the U-shaped bending plate (12) is the supporting surface (121); a reinforcing plate (14) is also provided between the lower plate surface of the U-shaped bending plate (12) and the inner plate surface of the second vertical plate (13).

8. The battery pack installation structure according to claim 7, characterized in that: A downwardly inclined guide plate (15) is provided at the front end of the U-shaped bending plate (12); a stop plate (16) is provided at the rear end of the U-shaped bending plate (12), and the plate surface of the stop plate (16) is perpendicular to the front-rear direction.

9. A battery cluster, characterized in that: A battery pack mounting structure comprising any one of claims 1 to 8; Wherein, a plurality of battery packs (2) are arranged at intervals in the up-down direction, and the left and right sides of the bottom surface of each battery pack (2) are respectively arranged on one of the support beams (1); and the plurality of support beams (1) located on the same side are connected by a column (5).

10. A battery energy storage system, characterized in that: include: Cabinet; the front side panel of the cabinet is a door panel, and the rear side panel is closed; as well as A plurality of battery clusters as claimed in claim 9; the plurality of battery clusters are arranged in an array and are respectively contained in the cabinet.

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