Combiner cabinet and energy storage system

Abstract

An energy storage system, provided with a combiner cabinet. The combiner cabinet comprises a cabinet body and a cabinet door which are rotatably connected. The cabinet body is provided with a first isolation chamber and a second isolation chamber. The cabinet door is configured to close the first isolation chamber and the second isolation chamber. The first isolation chamber and the second isolation chamber are arranged in a preset first direction. A first power distribution module is arranged in the first isolation chamber. An uninterrupted power supply is arranged in the second isolation chamber. The uninterrupted power supply is close to the bottom of the cabinet body and is configured as a backup power supply.

Description

Busbar cabinet and energy storage system

[0001] The present application claims priority to the Chinese patent application No. 202422411075.0, filed on September 30, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, in particular to a busbar cabinet and an energy storage system. BACKGROUND

[0003] The battery prefabricated cabin type battery energy storage system is usually equipped with a battery management system, which can monitor the voltage, temperature of each cluster, each module and each battery cell in the cabin, as well as the data such as battery cluster voltage and current in real time, and can control the cabin circuit breaker or switch to be disconnected for fault. The battery prefabricated cabin type battery energy storage system not only improves the safety of the system, but also enhances the operation efficiency and stability. SUMMARY

[0004] In the related art, the battery prefabricated cabin is usually divided into a battery cabin, an electrical cabin and a liquid cooling cabin. The battery cabin occupies a large space in the battery prefabricated cabin, resulting in poor reliability and safety of the battery prefabricated cabin type battery energy storage system.

[0005] In a first aspect, the present application provides a busbar cabinet, comprising:

[0006] a cabinet body, provided with a first isolation chamber and a second isolation chamber;

[0007] a cabinet door, rotationally connected with the cabinet body and configured to close the first isolation chamber and the second isolation chamber;

[0008] wherein the first isolation chamber and the second isolation chamber are arranged along a first direction, the first isolation chamber is provided with a first power distribution module, and the second isolation chamber is provided with an uninterruptible power supply, the uninterruptible power supply is close to the bottom of the cabinet body, and the uninterruptible power supply is configured as a backup power supply of a battery management system.

[0009] In a second aspect, the present application further provides an energy storage system, comprising the busbar cabinet provided in the first aspect. ADVANTAGEOUS EFFECTS

[0010] The current application provides a current collection cabinet, which should be configured as an energy storage system, and the current collection cabinet comprises a cabinet body and a cabinet door, the cabinet body is provided with a first isolation chamber and a second isolation chamber, the cabinet door is rotationally connected with the cabinet body and is configured to close the first isolation chamber and the second isolation chamber, the first isolation chamber and the second isolation chamber are arranged along a preset first direction, the first isolation chamber is provided with a first power distribution module, and the second isolation chamber is provided with an uninterruptible power supply, the uninterruptible power supply is close to the bottom of the cabinet body, and the uninterruptible power supply is configured as a backup power supply of a battery management system, so that the backup power supply can be provided for the battery management system, the uninterruptible power supply is arranged at the lower part of the current collection cabinet, the problem of poor maintainability caused by arranging the uninterruptible power supply at the top of the current collection cabinet is solved, the maintenance of the uninterruptible power supply is facilitated, the problem of malfunction of the energy storage cabinet caused by liquid leakage of the uninterruptible power supply can be avoided, and the reliability and safety of the energy storage system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a first structural schematic view of the current collection cabinet provided by the current application;

[0012] Fig. 2 is a second structural schematic view of the current collection cabinet provided by the current application;

[0013] Fig. 3 is a third structural schematic view of the current collection cabinet provided by the current application;

[0014] Fig. 4 is a fourth structural schematic view of the current collection cabinet provided by the current application;

[0015] Fig. 5 is a fifth structural schematic view of the current collection cabinet provided by the current application;

[0016] Fig. 6 is a sixth structural schematic view of the current collection cabinet provided by the current application;

[0017] Fig. 7 is a front view of the cabinet door provided by the current application;

[0018] Fig. 8 is a front view of the cabinet body provided by the current application.

[0019] Among them, 10 is the cabinet body, 101 is the first isolation chamber, 102 is the second isolation chamber, 103 is the third isolation chamber, 110 is the first power distribution module, 120 is the second power distribution module, 201 is the first cabinet door, 202 is the second cabinet door, 301 is the incoming line switch, 302 is the mutual inductor, 303 is the direct current switch, 304 is the alternating current surge protector, 401 is the uninterruptible power supply, 402 is the backup battery, 501 is the main circuit switch, 502 is the time delay switch, 51 is the protection switch, 503 is the main circuit fuse, 504 is the surge protector backup fuse, 505 is the direct current surge protector, 601 is the socket, 602 is the terminal block, 603 is the electric meter, 604 is the wiring groove, 605 is the display screen, 701 is the main control module, 801 is the operation module, and 901 is the state module. Embodiment of the application

[0020] In the related art, the battery cabin occupies a large space in the battery prefabricated cabin, which causes the space of the electrical cabin to be compressed, resulting in that the busbar cabinet of the electrical cabin cannot be arranged with an uninterruptible power supply (UPS), or after the uninterruptible power supply is arranged, the uninterruptible power supply cannot be effectively maintained, thereby causing the reliability and safety of the battery prefabricated cabin type battery energy storage system to be poor.

[0021] As mentioned in the present application, the technical problem of poor reliability and safety of the energy storage system, to solve this technical problem, the present application provides a busbar cabinet and an energy storage system.

[0022] Please refer to FIG. 1 to FIG. 8, the present application provides a busbar cabinet, which comprises:

[0023] The cabinet body 10 is provided with a first isolation chamber 101 and a second isolation chamber 102;

[0024] The cabinet door is rotatably connected with the cabinet body 10 and is configured to close the first isolation chamber 101 and the second isolation chamber 102;

[0025] Among them, the first isolation chamber 101 and the second isolation chamber 102 are arranged along a preset first direction, the first isolation chamber 101 is provided with a first power distribution module 110, the second isolation chamber 102 is provided with an uninterruptible power supply 401, the uninterruptible power supply 401 is provided with a backup battery 402, the uninterruptible power supply 401 is close to the bottom of the cabinet body 10, and the uninterruptible power supply 401 is configured as a backup power supply of the battery management system.

[0026] In the present embodiment, the first direction can be the vertical direction of the busbar cabinet after installation, that is, the first isolation chamber 101 and the second isolation chamber 102 can be arranged from top to bottom, so that the second isolation chamber 102 is located at the lower part of the busbar cabinet, and the uninterruptible power supply 401 can be arranged in the second isolation chamber 102, so that the storage battery of the uninterruptible power supply 401 can be arranged in the second isolation chamber 102, which not only realizes that the backup power supply can be provided for the battery management system, but also solves the problem of poor maintainability caused by arranging the uninterruptible power supply 401 on the top of the busbar cabinet, facilitates the maintenance of the uninterruptible power supply 401, and also can avoid the problem of failure of the energy storage cabinet due to liquid leakage of the uninterruptible power supply 401, and improves the reliability and safety of the energy storage system.

[0027] At the same time, the first isolation chamber 101 can be provided with a first power distribution module 110, and the first power distribution module 110 can distribute the power from the outside for the battery management system to use.

[0028] Among them, the battery management system (Battery Management System, BMS) is the main function including monitoring the battery state, controlling the charging process, distributing the power and protecting the battery.

[0029] The battery management system is composed of a master module 701 and a slave module, wherein the master module 701 is responsible for the functions of total voltage collection, total current collection, internal and external communication, fault recording and decision making; the slave module is usually responsible for single cell voltage collection, temperature collection and balancing function.

[0030] The battery management system provided by the application not only has efficient power distribution and management function, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high reliable power management and monitoring.

[0031] The battery management system provided by the application not only has efficient power distribution and management function, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high reliable power management and monitoring.

[0032] In some embodiments, as shown in FIG. 4, the first isolation chamber 101 is also provided with a master module 701 of the battery management system.

[0033] Specifically, the master module 701 of the battery management system can also be directly arranged in the first isolation chamber 101, so that the battery management system not only has efficient power distribution and management function, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high reliable power management and monitoring.

[0034] In some embodiments, the first power distribution module 110 is an alternating current power distribution module.

[0035] In the embodiment, the first power distribution module 110 can distribute the external alternating power supply to the battery management system to provide auxiliary power supply for the battery management system, thereby achieving effective distribution and management of the power supply and ensuring stable operation and high efficiency of the battery management system.

[0036] It should be noted that the first power distribution module 110 can also be a direct current power distribution module, which can also be configured to provide power supply for the battery management system to provide auxiliary power supply for the battery management system.

[0037] In addition, the first power distribution module 110 can also include an alternating current power distribution module and a direct current power distribution module, which can be installed in isolation in the main control box, thereby achieving alternating current and direct current isolation and improving the safety of the battery management system.

[0038] In some embodiments, as shown in FIGS. 1-8, the cabinet 10 further comprises a third isolation chamber 103, the third isolation chamber 103 is arranged along a preset second direction with the first isolation chamber 101, and the third isolation chamber 103 is provided with a second power distribution module 120.

[0039] Specifically, the second direction can be the left-right direction or the front-rear direction of the busbar cabinet after installation, that is, after the first isolation chamber 101 and the second isolation chamber 102 are arranged in the up-down direction, the third isolation chamber 103 can be arranged in the front-rear direction or the left-right direction.

[0040] In the embodiment, the second power distribution module 120 can also be an alternating current power distribution module or / and a direct current power distribution module.

[0041] In some embodiments, the second power distribution module 120 can be a direct current power distribution module, and the first power distribution module 110 can be an alternating current power distribution module.

[0042] When the first power distribution module 110 is an alternating current power distribution module and the second power distribution module 120 is a direct current power distribution module, the first power distribution module 110 can be configured to be electrically connected to the external power supply, and the second power distribution module 120 can be configured to be electrically connected to the battery cluster or the battery pack, that is, the first power distribution module 110 and the second power distribution module 120 are located at both ends of the busbar cabinet.

[0043] In some embodiments, the second power distribution module 120 includes at least one of a main circuit switch 501 and a protection switch 51.

[0044] In the embodiment, the second power distribution module 120 can be a direct current power distribution module, which includes a main circuit switch 501 and a protection switch 51, and the main circuit switch 501 and the protection switch 51 are arranged in the third isolation chamber 103.

[0045] Specifically, as shown in FIG. 8, the main circuit switch 501 can be a disconnecting switch, and the protection switch 51 can be a main circuit fuse 503, a surge protection device backup fuse 504, and a direct current surge protection device 505.

[0046] The disconnecting switch, also known as a "knife switch", is a kind of switch device configured to isolate the circuit in the electrical system, and its main function is to physically disconnect the circuit to ensure that the circuit is completely powered off during maintenance and repair, preventing electric shock or other dangers. The disconnecting switch has no arc extinguishing capability and can only disconnect and connect the circuit without load current.

[0047] The main circuit fuse 503 is an electrical component configured to protect the high-capacity main feeder or main circuit in the power distribution system, and its main function is to melt the fuse body by generating heat when a short circuit or severe overcurrent occurs in the circuit, thereby cutting off the circuit to prevent accidents and protect the equipment.

[0048] The surge protection device backup fuse 504 can be used as a backup protection device for the surge protection device, but its use needs to consider the matching with the surge protection device, the type and breaking capacity of the fuse, and whether it meets the relevant standards and specifications.

[0049] The direct current surge protection device (DC Surge Protection Device, SPD) 505 is a device that protects electrical equipment from the effects of transient overvoltage and lightning, and its main function is to limit the transient overvoltage that enters the power line or signal transmission line within the voltage range that the device or system can withstand, or to discharge the powerful lightning current into the ground, thereby protecting the protected device or system from damage.

[0050] In some embodiments, as shown in FIGS. 1, 2, and 3, the cabinet door includes a first cabinet door 201 and a second cabinet door 202; wherein the first cabinet door 201 and the second cabinet door 202 are both rotationally connected with the cabinet body 10, and the first cabinet door 201 is configured to close the third isolation chamber 103, and the second cabinet door 202 is configured to close the first isolation chamber 101 and the second isolation chamber 102.

[0051] In this embodiment, the first cabinet door 201 and the second cabinet door 202 are double-leaf doors, the first cabinet door 201 can be configured to close the third isolation chamber 103, i.e., to close the direct current power distribution module in the third isolation chamber 103, and the second cabinet door 202 can be configured to close the first isolation chamber 101 and the second isolation chamber 102, i.e., to close the alternating current power distribution module in the first isolation chamber 101 and the UPS power supply in the second isolation chamber 102.

[0052] In some embodiments, as shown in FIGS. 4, 5, 6 and 7, the display module of the battery management system is arranged on the first cabinet door 201, and at least one of the operation module 801 and the status module 901 of the battery management system is arranged on the second cabinet door 202.

[0053] In the present embodiment, the display module of the battery management system can be arranged on the outer surface of the first cabinet door 201 and penetrate the first cabinet door 201, and the operation module 801 and the status module 901 of the battery management system are arranged on the outer surface of the second cabinet door 202 and penetrate the second cabinet door 202.

[0054] Specifically, as shown in FIGS. 4, 5, 6 and 7, the display module can be a display screen 605, the display screen 605 can be a display control screen of the battery management system, the operation module 801 can be an emergency stop button and a split closing button respectively, and the status module 901 can be an indicator light, and the second cabinet door 202 can also be provided with an electric meter 603.

[0055] The display control screen of the battery management system monitors and displays the state information of the battery in real time, has a user-friendly interactive interface and various protection functions, and ensures the safety and efficient management of the battery.

[0056] The emergency stop button is a device for quickly stopping the battery management system in an emergency, and the split closing button is configured to control the opening and closing of the circuit in the battery management system, and is widely used in various high-voltage and low-voltage circuit breakers. The main function of the split closing button is to realize the closing (closing) and opening (disconnecting) of the circuit breaker by manual or electric method.

[0057] The indicator light can display whether the battery management system is running and whether the running is normal.

[0058] In some embodiments, the first power distribution module 110 includes at least one of an incoming line switch 301, a mutual inductor 302, a direct current switch 303 and a time delay switch 502.

[0059] In the present embodiment, the incoming line switch 301 can be an alternating current incoming line circuit breaker, the mutual inductor 302 can be a current transformer, the direct current switch 303 can be a loop switch, and the time delay switch 502 can be configured to control the on-off of the battery management system.

[0060] Specifically, as shown in FIGS. 4, 5, 6 and 8, the incoming line switch 301 can be a molded case circuit breaker, the direct current switch 303 can be a miniature circuit breaker, and the time delay switch 502 can be an intermediate relay.

[0061] At the same time, the first isolation chamber 101 can also be provided with an alternating current surge protector 304.

[0062] In some embodiments, as shown in FIGS. 6 and 8, at least one of the socket 601 and the terminal array 602 is further arranged in the first isolation chamber 101.

[0063] Specifically, the socket 601 can be a debugging socket 601, the terminal array 602 can be configured to connect components in the first isolation chamber 101, and the first isolation chamber 101 is further provided with a wiring slot 604.

[0064] In some embodiments, the cabinet 10 is provided with a mounting member (not shown in the figure) on the side away from the first isolation chamber 101 and the second isolation chamber 102.

[0065] In the present embodiment, the mounting member includes a bearing portion and a mounting portion, the bearing portion is provided with a first through hole, the mounting portion is provided with a second through hole, and after the bearing portion is arranged behind the busbar cabinet, a screw can pass through the first through hole to fix the mounting member to the busbar cabinet.

[0066] After the mounting portion is in contact with the energy storage cabinet, a screw can also pass through the second through hole to fix the busbar cabinet to the energy storage cabinet.

[0067] In addition, the cabinet 10 can be provided with a plurality of heat dissipation holes on the left and right sides to facilitate heat dissipation of components in the main control box. The bottom of the cabinet 10 is provided with a cable hole, and the battery, the fire extinguishing system, the temperature control system, the lighting system, and the external energy storage converter can be introduced from the cable hole.

[0068] In some embodiments, the present application further provides an energy storage system including the busbar cabinet provided by the present application.

[0069] Specifically, the energy storage system can be a battery prefabricated cabin type battery energy storage system, which can effectively guarantee the safe and efficient operation of the energy storage project and provide important support for the widespread application of renewable energy.

Claims

1. A switch cabinet, comprising: a cabinet body (10) provided with a first isolation chamber (101) and a second isolation chamber (102); a cabinet door rotatably connected with the cabinet body (10) and configured to close the first isolation chamber (101) and the second isolation chamber (102); wherein the first isolation chamber (101) and the second isolation chamber (102) are arranged along a preset first direction, the first isolation chamber (101) is provided with a first power distribution module (110), the second isolation chamber (102) is provided with an uninterruptible power supply (401), the uninterruptible power supply (401) is close to the bottom of the cabinet body (10), and the uninterruptible power supply (401) is configured as a backup power supply of a battery management system.

2. The busbar cabinet according to claim 1, wherein, The first isolation chamber (101) is further provided with a master control module (701) of the battery management system.

3. The busbar cabinet according to any one of claims 1-2, wherein, The cabinet body (10) is further provided with a third isolation chamber (103), the third isolation chamber (103) is arranged along a preset second direction with the first isolation chamber (101), and the third isolation chamber (103) is provided with a second power distribution module (120).

4. The busbar cabinet according to claim 3, wherein, The second power distribution module (120) is a direct current power distribution module.

5. The busbar cabinet according to any one of claims 3-4, wherein, The second power distribution module (120) comprises at least one of a main circuit switch (501) and a protection switch (51).

6. The busbar cabinet according to any one of claims 3-5, wherein, The cabinet door comprises a first cabinet door (201) and a second cabinet door (202); wherein the first cabinet door (201) and the second cabinet door (202) are rotatably connected with the cabinet body (10), the first cabinet door (201) is configured to close the third isolation chamber (103), and the second cabinet door (202) is configured to close the first isolation chamber (101) and the second isolation chamber (102).

7. The busbar cabinet according to claim 6, wherein, A display module of the battery management system is arranged on the first cabinet door (201) and close to the master control module (701) of the battery management system.

8. The busbar cabinet according to any one of claims 6-7, wherein, At least one of an operation module (801) and a state module (901) of the battery management system is arranged on the second cabinet door (202).

9. The busbar cabinet according to any one of claims 1-8, wherein, The first power distribution module (110) is an alternating current power distribution module.

10. The busbar cabinet according to claim 9, wherein, The first power distribution module (110) comprises at least one of an incoming line switch (301), a mutual inductor (302), a direct current switch (303), and a time delay switch (502).

11. The busbar cabinet according to any one of claims 1-10, wherein, The first isolation chamber (101) is further provided with at least one of a socket (601) and a terminal strip (602).

12. The busbar cabinet according to any one of claims 1-11, wherein, The cabinet body (10) is provided with a mounting member away from the first isolation chamber (101) and the second isolation chamber (102).

13. An energy storage system comprising the switch cabinet according to any one of claims 1-12.

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