Energy storage cabinet and energy storage system

Abstract

Disclosed in the present application are an energy storage system and an energy storage cabinet. The energy storage cabinet comprises a cabinet body, a plurality of guide rails, and support members, wherein a battery compartment is formed in the cabinet body; the guide rails are arranged in the battery compartment and are configured to fix a battery pack, and the plurality of guide rails are arranged on two opposite side walls of the battery compartment; each support member is arranged below the corresponding guide rail; one end of each support member is connected to a side wall of the battery compartment, and the other end thereof is connected to the corresponding guide rail; and a first direction is the direction of the length of the guide rails. The energy storage cabinet and the energy storage system solve the problem of the energy storage cabinet being difficult to carry and transport due to a relatively large weight during the assembly of a sodium ion battery pack.

Description

An energy storage cabinet and energy storage system

[0001] This application claims priority to Chinese Patent Application No. 2025205248505, filed with the Chinese Patent Office on March 24, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and in particular to an energy storage cabinet and energy storage system. Background Technology

[0003] Lithium-ion energy storage cabinets typically use rails to secure battery packs. However, for the same voltage requirements, sodium-ion battery packs are significantly heavier and larger than lithium-ion battery packs. Therefore, energy storage cabinets for sodium-ion battery packs need to withstand greater weight and have larger dimensions. This increases the weight of the cabinet, making it difficult to handle and subjecting it to greater inertial forces during transport, which can easily lead to deformation. Therefore, sodium-ion energy storage cabinets need to be designed with lightweight features in mind to accommodate the size and weight of sodium-ion battery packs. Technical issues

[0004] The energy storage cabinet is quite heavy when assembling sodium-ion battery packs, making it difficult to move and transport. Technical solutions

[0005] In a first aspect, this application provides an energy storage cabinet, comprising: a cabinet body, multiple guide rails and multiple support members, wherein a battery compartment is formed in the cabinet body, the guide rails are disposed in the battery compartment to fix the battery pack, the multiple guide rails are respectively disposed on opposite side walls of the battery compartment, and at least two support members are spaced apart below the corresponding guide rails along a first direction, one end of the support member is connected to the side wall of the battery compartment, and the other end is connected to the guide rail, wherein the first direction is the length direction of the guide rail.

[0006] Secondly, an energy storage system includes multiple battery packs and an energy storage cabinet, wherein the multiple battery packs are spaced apart in a battery compartment via guide rails.

[0007] The beneficial effects of the second aspect described above can be referred to in the first aspect or any possible implementation of the first aspect, and will not be elaborated here. Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

[0008] Other advantages, objectives and features of this application will be partly apparent from the description below, and partly understood by those skilled in the art through study and practice of this application. Beneficial effects

[0009] In practical applications, the support components are designed as a structure with multiple independent intervals. This design significantly reduces the overall weight of the energy storage cabinet, facilitates its handling, and reduces the inertial forces experienced by the cabinet during transportation, thus lowering the risk of deformation. Attached Figure Description

[0010] Figure 1 is a schematic diagram of the overall structure of an energy storage system provided by some embodiments of this application;

[0011] Figure 2 is a structural schematic diagram provided by some embodiments of this application to illustrate the position of the guide rail in the energy storage cabinet;

[0012] Figure 3 is a schematic diagram of the structure of the guide rail provided in some embodiments of this application;

[0013] Figure 4 is a structural schematic diagram of some embodiments of this application for demonstrating the groove;

[0014] Figure 5 is a partially enlarged schematic diagram of region A in Figure 4 provided by some embodiments of this application;

[0015] Figure 6 is a structural schematic diagram of some embodiments of this application for showing the spacing of the reinforcement parts;

[0016] Figure 7 is a structural schematic diagram of a connector provided by some embodiments of this application.

[0017] Figure label:

[0018] 20. Cabinet; 21. Battery compartment;

[0019] 30. Guide rail; 31. Third part; 32. Fourth part; 33. Reinforcing part; 331. Groove; 34. Placement channel; 35. Notch;

[0020] 40. Support component; 41. First part; 42. Second part;

[0021] 50. Connectors;

[0022] 60. First direction;

[0023] 70. Battery pack. Embodiments of the present invention

[0024] Because the sodium-ion battery pack 70 is much heavier and larger than the lithium-ion battery pack 70, the corresponding energy storage cabinet also needs to meet the requirements of bearing greater weight and being larger in size. However, this leads to an increase in the weight of the energy storage cabinet, making it inconvenient to handle and subjecting it to greater inertial forces during transportation, which can easily cause deformation.

[0025] Please refer to Figures 1 to 3. Figure 1 is a schematic diagram of the overall structure of the energy storage system provided in the embodiment of this application. Figure 2 is a schematic diagram of the position of the guide rail 30 in the energy storage cabinet provided in the embodiment of this application. Figure 3 is a schematic diagram of the structure of the guide rail 30 provided in the embodiment of this application.

[0026] The present application provides an energy storage system including multiple battery packs 70 and an energy storage cabinet, wherein the multiple battery packs 70 are spaced apart in a battery compartment 21 via guide rails 30.

[0027] Specifically, the energy storage cabinet includes a cabinet body 20, multiple guide rails 30, and multiple support members 40. A battery compartment 21 is formed in the cabinet body 20. The guide rails 30 are disposed in the battery compartment 21 to fix the battery pack 70. The multiple guide rails 30 are respectively disposed on opposite side walls of the battery compartment 21. At least two support members 40 are spaced apart along a first direction 60 below the corresponding guide rails 30. One end of the support member 40 is connected to the side wall of the battery compartment 21, and the other end is connected to the guide rail 30. The first direction 60 is the length direction of the guide rail 30.

[0028] In practical applications, the support component 40 is designed as a structure with multiple independent intervals. This design significantly reduces the overall weight of the energy storage cabinet, facilitates its handling, and reduces the inertial forces experienced by the cabinet during transportation, thus lowering the risk of deformation.

[0029] In this embodiment, there are two support members 40, which are respectively disposed at both ends of the guide rail 30 along the first direction 60. In other embodiments, the number of support members 40 can be one, three, four, five, etc., and multiple support members 40 are disposed at intervals below the guide rail 30 along the first direction 60.

[0030] In one embodiment, referring to Figures 3 and 4, the support member 40 includes a first part 41 and a second part 42. The first part 41 is connected to the guide rail 30 and is bent to connect with the second part 42. The first part 41 and the second part 42 extend along a direction perpendicular to the first direction 60, and the second part 42 is connected to the side wall of the battery compartment 21.

[0031] In practical applications, the first part 41 and the second part 42 are connected by bending using sheet metal processing. The bending structure effectively enhances the stability of the support member 40, enabling it to better support the weight of the battery pack 70, while ensuring a more secure connection between the support member 40 and the battery compartment 21. This design not only enhances the structural strength of the support member 40 and prevents deformation during use, but also reduces the weight of the energy storage cabinet.

[0032] In one embodiment, referring to FIG6, the width of the first part 41 gradually increases in the direction away from the second part 42.

[0033] In practical applications, this design can improve the load-bearing capacity of the support member 40 while maintaining its stability. As the width of the first part 41 gradually increases, the contact area of ​​the support member 40 is expanded, thereby distributing the pressure applied by the battery pack 70 more evenly. This structure not only enhances the supporting effect of the support member 40 on the battery pack 70, but also effectively reduces material deformation caused by uneven stress.

[0034] In this embodiment, the first part 41 is an isosceles trapezoid with the shorter side of the trapezoid located at the end closer to the second part 42 and the longer side of the trapezoid located at the end farther away from the second part 42.

[0035] In one embodiment, referring to Figure 6, the two opposite sides of the first part 41 are inclined to each other, and the included angle is D, where 15°≤D≤75°. In this embodiment, D=45°, and in other embodiments, D=60°, D=30°, etc.

[0036] In one embodiment, referring to FIG3, the guide rail 30 includes a third part 31, a fourth part 32 and a plurality of reinforcing parts 33. The third part 31 is connected to the side wall of the battery compartment 21 and is bent to connect with the fourth part 32. The fourth part 32 is connected to the support member 40. The plurality of reinforcing parts 33 are spaced apart along the first direction 60. The reinforcing parts 33 are simultaneously connected to the third part 31 and the fourth part 32.

[0037] In practical applications, the third part 31 and the fourth part 32 are connected by bending using sheet metal processing. The connection between the third part 31 and the side wall of the battery compartment 21 ensures that the guide rail 30 can be firmly fixed inside the battery compartment 21, while the connection between the fourth part 32 and the support member 40 provides additional support, further enhancing the load-bearing capacity of the guide rail 30. The multiple reinforcing parts 33 increase the rigidity of the third part 31 and the fourth part 32, effectively distributing the force on the third part 31 and the fourth part 32, avoiding uneven stress or deformation that may occur with a single structure, and ensuring that the guide rail 30 remains stable under heavy loads.

[0038] In one embodiment, referring to Figures 4 and 5, a placement channel 34 configured to place a battery pack 70 is formed between the third part 31 and the fourth part 32. The placement channel 34 extends along a first direction 60. A reinforcing part 33 passes through the placement channel 34, and a groove 331 is provided at one end of the reinforcing part 33 away from the placement channel 34.

[0039] In practical applications, without the groove 331, localized stress concentration may occur between the reinforcing part 33 and the guide rail 30. Especially under high loads, excessive localized stress can lead to material fatigue or fracture. The groove 331 can guide and optimize the load transfer path. Especially in the initial stage of load application, the groove 331 helps to disperse the external load from the surface of the reinforcing part 33 to a larger area, resulting in a more uniform stress distribution. This reduces deformation or damage caused by excessive stress at a single point, improving the overall strength and durability of the structure.

[0040] In this embodiment, both the reinforcing part 33 and the groove 331 are formed by stamping.

[0041] In one embodiment, the connection between the reinforcing part 33 and the third part 31, the connection between the reinforcing part 33 and the fourth part 32, and the inner wall of the groove 331 are all arc-shaped.

[0042] In practical applications, the arc-shaped design can effectively improve stress concentration, especially at connection points and on the inner wall of groove 331. The arc shape helps stress transition along the arc, avoiding stress concentration caused by sharp corners or straight structures. This allows for a more even distribution of externally applied loads, reducing material fatigue or damage caused by excessive local stress.

[0043] Optionally, referring to Figure 6, in the first direction 60, the spacing between adjacent reinforcing parts 33 is X1, the length of the guide rail 30 is X2, and 7.2≤X2 / X1≤11.6.

[0044] In one embodiment, referring to FIG7, the guide rail 30 includes a third part 31 and a fourth part 32. The third part 31 is connected to the side wall of the battery compartment 21 and is bent to connect with the fourth part 32. The energy storage cabinet includes a plurality of connectors 50, which are spaced apart along a first direction 60 between the third part 31 and the fourth part 32. The connectors 50 are connected to the third part 31 and the fourth part 32.

[0045] In practical applications, by setting multiple connectors 50 between the third part 31 and the fourth part 32, the structural stability and overall strength of the guide rail 30 are enhanced. The function of the connectors 50 is to firmly connect the third part 31 and the fourth part 32 together, ensuring that the guide rail 30 will not deform under stress, thereby providing more stable support.

[0046] In one embodiment, referring to FIG7, in the first direction 60, the spacing between adjacent connectors 50 is X3, and the length of guide rail 30 is X2, 13.5≤X2 / X3≤17.9.

[0047] In one embodiment, referring to FIG7, a notch 35 is formed at one end of the guide rail 30, and the notch 35 is configured for a liquid cooling pipe to pass through.

[0048] In practical applications, a notch 35 is provided at the end of the guide rail 30 to provide a dedicated channel for the arrangement of liquid cooling pipes, avoiding interference between the liquid cooling pipes and the guide rail 30. Through the reasonable design of the notch 35, the liquid cooling pipes can pass smoothly through the guide rail 30 without affecting the stability of other structures in the energy storage cabinet.

Claims

1. An energy storage cabinet, comprising: A cabinet, in which a battery compartment is formed; Multiple guide rails are disposed in the battery compartment to fix the battery pack, and the multiple guide rails are respectively disposed on opposite side walls of the battery compartment; A support member is provided below the corresponding guide rail. One end of the support member is connected to the side wall of the battery compartment, and the other end is connected to the guide rail.

2. The energy storage cabinet according to claim 1, wherein, The support member includes a first part and a second part. The first part is connected to the guide rail and is bent to connect with the second part. The first part and the second part extend perpendicular to a first direction. The second part is connected to the side wall of the battery compartment. The first direction is the length direction of the guide rail.

3. The energy storage cabinet according to claim 2, wherein, The width of the first part gradually increases in the direction away from the second part.

4. The energy storage cabinet according to claim 3, wherein, The two opposite sides of the first part are inclined to each other, and the included angle is D, 15°≤D≤75°.

5. The energy storage cabinet according to claim 1, wherein, The guide rail includes a third part, a fourth part, and multiple reinforcing parts. The third part is connected to the side wall of the battery compartment and is bent to connect with the fourth part. The fourth part is connected to the support member. The multiple reinforcing parts are spaced apart along the first direction. The reinforcing parts are connected to the third part and the fourth part.

6. The energy storage cabinet according to claim 5, wherein, A placement channel for placing a battery pack is formed between the third part and the fourth part. The placement channel extends along the first direction. The reinforcing part passes through the placement channel, and a groove is formed at the end of the reinforcing part away from the placement channel.

7. The energy storage cabinet according to claim 6, wherein, The connection between the reinforcing part and the third part, the connection between the reinforcing part and the fourth part, and the inner wall of the groove are all arc-shaped.

8. The energy storage cabinet according to any one of claims 5 to 7, wherein, In the first direction, the distance between adjacent reinforcing parts is X1, the length of the guide rail is X2, and 7.2≤X2 / X1≤11.

6.

9. The energy storage cabinet according to claim 1, The guide rail includes a third part and a fourth part. The third part is connected to the side wall of the battery compartment and is bent and connected to the fourth part. The energy storage cabinet includes multiple connectors, which are spaced apart along the first direction between the third part and the fourth part. The connectors are connected to the third part and also to the fourth part.

10. The energy storage cabinet according to claim 9, wherein, In the first direction, the spacing between adjacent connectors is X3, and the length of the guide rail is X2, 13.5≤X2 / X3≤17.

9.

11. The energy storage cabinet according to any one of claims 1 to 7, wherein, A notch is formed at one end of the guide rail, and the notch is configured for a liquid cooling pipe to pass through.

12. The energy storage cabinet according to claims 1 to 7, wherein, Multiple support members are provided, and the multiple support members are spaced apart below the guide rail along a first direction, which is the length direction of the guide rail.

13. An energy storage system comprising a plurality of battery packs and an energy storage cabinet according to any one of claims 1 to 12, wherein the plurality of battery packs are spaced apart in the battery compartment by means of the guide rails.

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