Energy storage cabinet and energy storage device
Patent Information
- Application Number
- PCT/CN2026/083023
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-26
- Filing Date
- 2026-03-12
- Publication Date
- 2026-10-01
Smart Images
Figure CN2026083023_01102026_PF_FP_ABST
Abstract
Description
An energy storage cabinet and energy storage device
[0001] This application claims priority to Chinese Patent Application No. 2025205495860, filed with the Chinese Patent Office on March 6, 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 device. Background Technology
[0003] With the continuous development of energy storage technology, sodium-ion batteries, as a new type of battery technology, are gradually being applied due to their advantages such as lower cost and abundant resources. However, compared to lithium-ion battery packs, sodium-ion battery packs are much heavier and larger, requiring extra attention to strength and structure during the design and transportation of energy storage cabinets. Traditional energy storage cabinets are mostly configured to assemble lithium-ion battery packs, but in practical applications, energy storage cabinets equipped with sodium-ion battery packs are subjected to significant inertial forces during transportation, especially when the speed of the transport vehicle changes, making the cabinets prone to deformation. Once the energy storage cabinet deforms, it may compress the battery pack, causing battery damage or even safety accidents. Therefore, improving the strength of energy storage cabinets, especially when subjected to inertial forces and external pressure, is particularly important. Technical issues
[0004] How to improve the strength of the energy storage cabinet when assembling sodium-ion battery packs. Technical solutions
[0005] In a first aspect, this application provides an energy storage cabinet, comprising: a cabinet body and an electrical box assembly. The cabinet body is provided with an electrical compartment, which is configured to assemble electrical equipment. The electrical box assembly includes an outer shell, a partition, a first cover, and a second cover. The outer shell is disposed within the electrical compartment, and the inner wall of the outer shell and the electrical compartment are connected. The partition is disposed inside the outer shell to separate the space inside the outer shell into a high-voltage compartment and a low-voltage compartment. At least a portion of the high-voltage compartment extends along a first direction, and at least a portion of the low-voltage compartment extends along a second direction. The high-voltage compartment and the low-voltage compartment are L-shaped, and the first direction and the second direction are perpendicular to each other. The first cover is disposed on the outer shell to cover the high-voltage compartment, and the second cover is disposed on the outer shell to cover the low-voltage compartment.
[0006] In a second aspect, an energy storage device includes multiple battery packs and an energy storage cabinet, wherein the multiple battery packs are disposed in the energy storage cabinet.
[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 separation design of the high-voltage and low-voltage electrical compartments effectively prevents mutual interference between electrical equipment, ensuring independent operation of high-voltage and low-voltage equipment and improving equipment safety and stability. The outer shell is positioned along both the first and second directions, allowing it to support the cabinet from both directions when connected. This design effectively improves the overall strength of the energy storage cabinet, enabling it to withstand more external stress and internal loads, enhancing its structural stability, especially during transportation and use, effectively preventing deformation and damage. The L-shaped arrangement of the outer shell improves adaptability to the internal space of the energy storage cabinet. This design allows for more flexible use of space within the electrical compartment, enabling electrical equipment to be rationally arranged according to actual needs, thus optimizing the layout of the electrical equipment. Attached Figure Description
[0010] Figure 1 is a structural schematic diagram of an energy storage cabinet equipped with an electrical box assembly provided by some implementations of this application;
[0011] Figure 2 is a front view of an electrical box assembly without the first and second covers provided in some implementations of this application;
[0012] Figure 3 is a structural schematic diagram of some implementations of this application, showing the first connecting hole, the second connecting hole and the third connecting hole;
[0013] Figure 4 is a schematic diagram of the overall structure of the electrical box assembly provided in some implementations of this application;
[0014] Figure 5 is a schematic diagram showing the internal structure of the electrical box assembly provided by some implementation methods of this application.
[0015] Reference numerals: 20, cabinet; 21, electrical compartment; 30, electrical box assembly; 32, outer shell; 321, high-voltage compartment; 3211, first compartment; 3212, second compartment; 322, low-voltage compartment; 3221, first opening; 3222, second opening; 323, first connecting hole; 324, second connecting hole; 33, partition; 34, first cover; 341, clearance hole; 35, second cover; 351, first split part; 352, second split part; 353, operating hole; 36, connecting plate; 361, third connecting hole; 37, clearance groove; 38, circuit breaker; 381, actuator; 382, control part; 39, guide rail; 40, first locking element; 50, second locking element; 60, third locking element; 70, first direction; 80, second direction. Embodiments of the present invention
[0016] Please refer to Figures 1 to 3. Figure 1 is a structural schematic diagram of an energy storage cabinet equipped with an electrical box assembly 30 according to an embodiment of this application. Figure 2 is a front view of the electrical box assembly 30 without the first cover 34 and the second cover 35 according to an embodiment of this application. Figure 3 is a structural schematic diagram of an embodiment of this application configured to show the first connection hole 323, the second connection hole 324 and the third connection hole 361.
[0017] This application provides an energy storage device, including multiple battery packs and an energy storage cabinet, with the multiple battery packs housed within the energy storage cabinet. Note that the battery packs are not shown in Figures 1-5.
[0018] Specifically, the energy storage cabinet includes a cabinet body 20 and an electrical box assembly 30. The cabinet body 20 is provided with an electrical compartment 21, which is configured to assemble electrical equipment. The electrical box assembly 30 includes an outer shell 32, a partition 33, a first cover 34, and a second cover 35. The outer shell 32 is disposed in the electrical compartment 21, and the inner walls of the outer shell 32 and the electrical compartment 21 are connected. The partition 33 is disposed inside the outer shell 32 to separate the space inside the outer shell 32 to form a high-voltage compartment 321 and a low-voltage compartment 322. At least a portion of the high-voltage compartment 321 extends along a first direction 70, and at least a portion of the low-voltage compartment 322 extends along a second direction 80. The high-voltage compartment 321 and the low-voltage compartment 322 are L-shaped, and the first direction 70 and the second direction 80 are perpendicular to each other. The first cover 34 is disposed on the outer shell 32 to cover the high-voltage compartment 321, and the second cover 35 is disposed on the outer shell 32 to cover the low-voltage compartment 322.
[0019] In practical applications, the separation design of the high-voltage compartment 321 and the low-voltage compartment 322 effectively prevents mutual interference between electrical equipment, ensuring that high-voltage and low-voltage equipment operate independently, thus improving equipment safety and stability. The outer shell 32 is positioned along the first direction 70 and the second direction 80, allowing it to support the cabinet 20 from both directions when connected. This design effectively improves the overall strength of the energy storage cabinet, enabling it to withstand more external stress and internal loads, enhancing its structural stability, and effectively preventing deformation and damage, especially during transportation and use. The L-shaped arrangement of the outer shell 32 improves adaptability to the internal space of the energy storage cabinet. This design allows for more flexible space utilization within the electrical compartment 21, enabling electrical equipment to be rationally arranged according to actual needs, thus optimizing the layout of the electrical equipment. For example, when multiple electrical devices are installed and the remaining space is L-shaped, the housing 32 is embedded in the L-shaped space, so that the housing 32 is adjacent to multiple electrical devices at the same time, and multiple holes configured for wiring are opened on the housing 32. At this time, the wiring harnesses of multiple electrical devices can be connected to the electrical components inside the housing 32 through the holes configured for wiring on the housing 32, thereby saving the space in the electrical compartment 21 for additional wiring channels.
[0020] In this embodiment, the second direction 80 is the height direction of the cabinet 20, the first direction 70 is the width direction of the cabinet 20, the high-voltage compartment 321 is disposed above the low-voltage compartment 322, and the electrical box assembly 30 is a component independent of the cabinet 20. The electrical box assembly 30 is connected to the cabinet 20 by bolts. In other embodiments of this application, the electrical box assembly 30 may also be a component integrated with the cabinet 20, or it may be partially integrated with the cabinet 20 and partially independent of the cabinet 20. For example, when at least a portion of the electrical box assembly 30 is integrated with the cabinet 20, the side wall of the cabinet 20 may also be the side wall of the high-voltage compartment 321 and / or the low-voltage compartment 322.
[0021] In one embodiment, referring to Figures 1, 2 and 3, the outer shell 32 is connected to the opposite side walls and bottom wall of the electrical compartment 21, and a plurality of electrical devices in the electrical compartment 21 are respectively arranged on the upper and lower sides of the high-voltage compartment 321.
[0022] In one embodiment, the high-voltage compartment 321 is disposed above the low-voltage compartment 322. The outer shell 32 at both ends of the high-voltage compartment 321 is connected to the opposite side walls of the electrical compartment 21, and the outer shell 32 at the end of the low-voltage compartment 322 away from the high-voltage compartment 321 is connected to the bottom wall of the electrical compartment 21.
[0023] In practical applications, the outer shell 32 is connected to the opposite side walls and bottom wall of the electrical compartment 21. This design enhances the overall structural connection between the outer shell 32 and the electrical compartment 21, effectively improving the stability of the cabinet 20. During the use of the energy storage cabinet, external pressure or vibration is evenly transmitted through this connection method, reducing local stress concentration and preventing local deformation or damage to the cabinet 20, thus enhancing the energy storage cabinet's impact resistance during transportation, handling, and use. The connection method between the outer shell 32 and the side walls and bottom wall allows the outer shell 32 to provide support in both the first direction 70 and the second direction 80. Through support from multiple directions, the overall load-bearing capacity of the energy storage cabinet structure is further improved. Especially when subjected to large external loads, it can effectively disperse stress and prevent structural damage to the cabinet 20 caused by excessive local load.
[0024] Optionally, referring to Figures 2 and 3, the outer casing 32 has a first connecting hole 323 and a second connecting hole 324, which are respectively opened along a first direction 70 on opposite side walls of the power compartment 321. The electrical box assembly 30 has a third connecting hole 361 along a third direction, which is perpendicular to the first direction 70 and the second direction 80. The energy storage cabinet includes a first locking member 40, a second locking member 50, and a third locking member 60. The first locking member 40 passes through the first connecting hole 323, the second locking member 50 passes through the second connecting hole 324, and the third locking member 60 passes through the third connecting hole 361. The outer casing 32 and the cabinet 20 are connected to the cabinet 20 through the first locking member 40, the second locking member 50, and the third locking member 60.
[0025] In one embodiment, referring to Figures 2 and 3, the electrical box assembly 30 further includes a connecting plate 36, which is disposed at the end of the weak current compartment 322 away from the strong current compartment 321. The connecting plate 36 is connected to the outer shell 32 and a third connecting hole 361 is formed in the connecting plate 36. The third locking member 60 is connected to the outer shell 32 and the cabinet 20 through the connecting plate 36.
[0026] In practical applications, by opening a first connection hole 323 and a second connection hole 324 on opposite side walls of the high-voltage compartment 321 of the outer shell 32, and cooperating with a third connection hole 361 on the connecting plate 36, a three-point locking connection is formed between the outer shell 32, the connecting plate 36, and the cabinet 20. This three-dimensional locking structure ensures a firm connection between the components of the energy storage cabinet, effectively preventing loosening or displacement of connections due to long-term use or external forces, thereby improving the stability and service life of the energy storage cabinet.
[0027] In one embodiment, the high-voltage compartment 321 includes a first compartment 3211, the length of which extends along a first direction 70, and the length of the low-voltage compartment 322 extends along a second direction 80. The first compartment 3211 and the low-voltage compartment 322 are L-shaped.
[0028] In practical applications, the partition 33 and the outer shell 32 are integrally molded, ensuring a tight structural connection between these key components. This eliminates potential gaps and joints in traditional designs, thereby improving overall structural stability. Energy storage cabinets designed in this way are less prone to loosening or misalignment under external pressure or vibration. Furthermore, the reduced number of splicing and connection points between components results in more uniform deformation of the overall structure under external forces, avoiding localized deformation or damage caused by weaker connections in traditional designs. This gives the energy storage cabinet higher compressive strength and impact resistance during transportation and use.
[0029] In one embodiment, referring to FIG5, the high-voltage compartment 321 includes a second compartment 3212 communicating with the first compartment 3211. The length direction of the second compartment 3212 extends along the second direction 80. The low-voltage compartment 322 is disposed at the end of the second compartment 3212 away from the first compartment 3211. The first compartment 3211, the second compartment 3212 and the low-voltage compartment 322 are L-shaped. A partition 33 is disposed between the second compartment 3212 and the low-voltage compartment 322 to separate the second compartment 3212 and the low-voltage compartment 322.
[0030] In practical applications, by adding a second compartment 3212 within the high-voltage compartment 321 and arranging it in an L-shape with the low-voltage compartment 322, not only is the internal space of the high-voltage compartment 321 effectively expanded, but greater flexibility is also provided for the arrangement of electrical equipment. This structural arrangement allows the energy storage cabinet to accommodate more electrical equipment while maintaining an overall compact structure, thereby improving the space utilization efficiency of the energy storage cabinet.
[0031] In one embodiment, referring to Figures 4 and 5, the low-voltage compartment 322 includes an adjacent and connected first opening 3221 and a second opening 3222, which are arranged perpendicularly to each other. The electrical box assembly 30 includes a second cover 35, which is disposed on the outer shell 32 to cover the low-voltage compartment 322. The second cover 35 includes a first part 351 and a second part 352, which are bent and connected. The first part 351 is connected to the outer shell 32 to cover the first opening 3221, and the second part 352 is connected to the outer shell 32 to cover the second opening 3222. The first part 351, the second part 352, and the partition 33 together form a clearance groove 37.
[0032] In practical applications, the perpendicular arrangement of the first opening 3221 and the second opening 3222 facilitates the installation of electrical hardware components such as air switches in the low-voltage compartment 322 from different directions by assembly personnel. Simultaneously, the first and second components 351 and 352 are connected by bending to the outer shell 32, sealing off all openings and improving the compartment's airtightness. This prevents external environmental interference with the internal equipment and enhances the overall safety of the energy storage cabinet. The combination of the first component 351, the second component 352, and the partition 33 forms a clearance groove 37. This groove design not only effectively provides additional space to accommodate wiring and other equipment but also makes the installation of electrical components more convenient. The presence of the clearance groove 37 better prevents damage or improper installation of electrical equipment during installation due to limited space in the electrical compartment 21.
[0033] In one embodiment, referring to Figures 4 and 5, the electrical box assembly 30 includes a circuit breaker 38 and a first cover 34. The first cover 34 is disposed on the outer casing 32 to cover the high-voltage compartment 321. The first cover 34 has a clearance hole 341. The circuit breaker 38 is assembled in the high-voltage compartment 321 and extends through the clearance hole 341. The circuit breaker 38 includes an actuator 381 and a control unit 382. The actuator 381 is electrically connected to a conductor and is configured to switch between a disconnected state and a connected state of the conductor. One end of the control unit 382 extends through the clearance hole 341 and is configured to control the operation of the actuator 381.
[0034] In practical applications, by opening a clearance hole 341 in the first cover 34 and assembling the circuit breaker 38 in the high-voltage compartment 321, it is ensured that the circuit breaker 38 can easily pass through the hole, allowing operators to directly operate the control unit 382 from the outside. This design not only facilitates the control and maintenance of electrical equipment but also reduces the risk of misoperation or contact current during operation, thus improving safety.
[0035] In one embodiment, referring to FIG4, the electrical box assembly 30 includes a second cover 35 disposed on the outer shell 32 to cover the low-voltage compartment 322. The second cover 35 has an operation hole 353. The electrical box assembly 30 includes a guide rail 39 and a socket. The guide rail 39 is disposed in the low-voltage compartment 322. The socket and the guide rail 39 are slidably connected. The socket passes through the operation hole 353.
[0036] In practical applications, an operation hole 353 is provided on the second cover 35, which makes it convenient for operators to connect or disconnect the socket from the outside. This design greatly improves the ease of operation of the energy storage cabinet in daily use. Especially when plugging and unplugging is required, it can be operated without opening the cabinet 20 or disassembling other parts, reducing maintenance costs and time.
[0037] In this embodiment, the guide rail 39 can not only slide to connect the socket, but also slide to connect electrical hardware components such as air switches. The projections of the guide rail 39 and the socket on the plane where the operation hole 353 is located partially coincide with the operation hole 353.
Claims
1. An energy storage cabinet, comprising: The cabinet is equipped with an electrical compartment for mounting electrical equipment. An electrical box assembly includes a shell, a partition, a first cover, and a second cover. The shell is disposed in the electrical compartment and connected to the inner wall of the electrical compartment. The partition is disposed inside the shell to separate the space inside the shell into a high-voltage compartment and a low-voltage compartment. At least a portion of the high-voltage compartment extends along a first direction, and at least a portion of the low-voltage compartment extends along a second direction. The high-voltage compartment and the low-voltage compartment are L-shaped, and the first direction and the second direction are perpendicular to each other.
2. The energy storage cabinet according to claim 1, wherein, The outer shell is connected to the opposite side walls and bottom wall of the electrical compartment, respectively.
3. The energy storage cabinet according to claim 2, wherein, The high-voltage compartment is connected to the opposite side walls of the electrical compartment at both ends along the first direction, and the low-voltage compartment is connected to the bottom wall of the electrical compartment at one end along the second direction away from the high-voltage compartment.
4. The energy storage cabinet according to any one of claims 1-3, The outer shell is provided with a first connection hole and a second connection hole, which are respectively opened on the opposite side walls of the high-voltage compartment along the first direction; The electrical box assembly has a third connection hole along a third direction, which is perpendicular to the first direction and the second direction, respectively. The energy storage cabinet includes a first locking member, a second locking member, and a third locking member. The first locking member passes through the first connecting hole, the second locking member passes through the second connecting hole, and the third locking member passes through the third connecting hole. The outer shell and the cabinet body are connected to the cabinet body through the first locking member, the second locking member, and the third locking member.
5. The energy storage cabinet according to claim 4, wherein, The electrical box assembly also includes a connecting plate, which is located at the end of the weak current compartment away from the strong current compartment. The connecting plate is connected to the outer shell, and the third connecting hole is opened on the connecting plate. The third locking member connects the outer shell and the cabinet through the connecting plate.
6. The energy storage cabinet according to claim 1, wherein, The high-voltage compartment includes a first compartment, the length of which extends along the first direction, and the length of the low-voltage compartment extends along the second direction. The first compartment and the low-voltage compartment are L-shaped.
7. The energy storage cabinet according to claim 6, wherein, The high-voltage compartment includes a second compartment connected to the first compartment. The length of the second compartment extends along the second direction. The low-voltage compartment is located at the end of the second compartment away from the first compartment. The first compartment, the second compartment, and the low-voltage compartment are L-shaped. The partition is located between the second compartment and the low-voltage compartment to separate the second compartment and the low-voltage compartment.
8. The energy storage cabinet according to claim 1, wherein, The electrical box assembly includes a circuit breaker and a first cover. The first cover is disposed on the outer shell to cover the high-voltage compartment. The first cover has a clearance hole. The circuit breaker is assembled in the high-voltage compartment and passes through the clearance hole. The circuit breaker includes an actuator and a control unit. The actuator is electrically connected to a conductor and is configured to switch between a disconnected state and a connected state of the conductor. One end of the control unit extends through the clearance hole and is configured to control the operation of the actuator.
9. The energy storage cabinet according to claim 1, wherein, The weak current compartment includes an adjacent and connected first opening and a second opening, which are arranged perpendicularly to each other. The electrical box assembly includes a second cover, which is disposed on the outer shell to cover the low-voltage compartment. The second cover includes a first part and a second part, which are bent and connected. The first part is connected to the outer shell to cover the first opening, and the second part is connected to the outer shell to cover the second opening. The first part, the second part, and the partition together form a clearance groove.
10. The energy storage cabinet according to claim 1, wherein, The electrical box assembly includes a second cover, which is disposed on the outer shell to cover the low-voltage compartment. The second cover has an operating hole. The electrical box assembly includes a guide rail and a socket. The guide rail is disposed in the low-voltage compartment. The socket and the guide rail are slidably connected. The socket passes through the operating hole.
11. An energy storage device, comprising a plurality of battery packs and an energy storage cabinet as described in any one of claims 1 to 10, wherein the plurality of battery packs are disposed in the energy storage cabinet.