Main control box and energy storage cabinet

Abstract

Disclosed in the present application are a main control box and an energy storage cabinet. The main control box is arranged in an energy storage cabinet. The main control box comprises a box body and a box door, wherein the box body is provided with a cavity that has an opening; the box door is rotationally connected to the box body, and closes the cavity at the opening; a power distribution module and a main control module of a battery management system are provided in the cavity; and the power distribution module is electrically connected to the battery management system, and is configured to distribute power supply to the battery management system, thereby providing auxiliary power supply for the battery management system.

Description

Master control box and energy storage cabinet

[0001] The present application claims priority to the Chinese patent application No. 202422411067.6 filed on September 30, 2024 with the Chinese Patent Office, the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a master control box and an energy storage cabinet. BACKGROUND

[0003] With the continuous development of the electrochemical energy storage industry, the energy density of the energy storage system is getting larger and larger, and the volume of the battery cabin of the energy storage cabinet where the energy storage system is located is also increasing. SUMMARY

[0004] In the related art, in order to maintain the size of the energy storage cabinet unchanged, the space of the electrical cabin of the energy storage cabinet needs to be compressed by the battery cabin, resulting in that the space among power distribution, current collection and fire fighting of the energy storage cabinet becomes difficult to coordinate.

[0005] In a first aspect, the present application provides a master control box, comprising:

[0006] a box body, provided with a cavity with an opening;

[0007] a box door, rotationally connected with the box body and closing the cavity at the opening;

[0008] wherein the cavity is provided with a power distribution module and a master control module of a battery management system, the power distribution module is electrically connected with the battery management system and is used for distributing power supply for the battery management system.

[0009] In a second aspect, the present application provides an energy storage cabinet, comprising the master control box provided in the first aspect. ADVANTAGEOUS EFFECTS

[0010] The master control box provided by the present application is arranged in the energy storage cabinet, the master control box comprises a box body and a box door, the box body is provided with a cavity with an opening, the box door is rotationally connected with the box body and closes the cavity at the opening, the cavity is provided with a power distribution module and a master control module of a battery management system, the power distribution module is electrically connected with the battery management system and is used for distributing power supply for the battery management system, so as to provide auxiliary power supply for the battery management system, thereby realizing the integration of power distribution and control in the master control box, without the need to integrate the master control of the battery management system in the current collection cabinet, reducing the volume of the current collection cabinet, thereby reducing the occupied space of the current collection cabinet in the energy storage cabinet, and optimizing the layout of power distribution, current collection and fire fighting of the energy storage cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a structural schematic view of the master control box provided by the present application;

[0012] Fig. 2 is another structural schematic diagram of the master control box provided by the present application;

[0013] Fig. 3 is a front view of the master control box provided by the present application;

[0014] Fig. 4 is a front view of the box body provided by the present application;

[0015] Fig. 5 is a rear view of the box door provided by the present application;

[0016] Fig. 6 is a schematic diagram of the mounting base provided by the present application.

[0017] Wherein, 10 is the box body, 101 is the wire inlet hole, 102 is the heat dissipation hole, 103 is the wire slot, 104 is the mounting piece, 1041 is the bearing part, 1042 is the mounting part, 1043 is the first through hole, 1044 is the second through hole, 20 is the box door, 201 is the wire pipe, 301 is the master control module, 3021 is the display module, 3022 is the electric meter, 3031 is the surge protector, 304 is the operation module, 3041 is the emergency stop button, 3042 is the on-off button, 305 is the state module, 401 is the wire inlet switch, 402 is the mutual inductor, 403 is the switching power supply, 404 is the DC switch, 405 is the time delay switch, 501 is the terminal row, and 502 is the adapter terminal. Embodiments of the present application

[0018] In the related art, in order to coordinate the power distribution, current collection and fire protection of the energy storage cabinet, a vertical current collection cabinet is usually arranged in the energy storage cabinet, and a battery management system master control is integrated in the interior of the current collection cabinet, and then an additional power distribution box is arranged in the energy storage cabinet to provide auxiliary power for the battery management system. However, the power distribution box occupies a large amount of space, which is not conducive to the layout of the fire protection system in the energy storage cabinet.

[0019] In view of the technical problem of poor layout of power distribution, current collection and fire protection of the energy storage cabinet as mentioned in the present application, the present application provides a master control box and an energy storage cabinet.

[0020] Please refer to Fig. 1, which is a structural schematic diagram of the master control box provided by the present application. As shown in Fig. 1, the present application provides a master control box, which comprises:

[0021] The box body 10 is provided with an open cavity;

[0022] The box door 20 is rotationally connected with the box body 10 and closes the cavity at the opening;

[0023] Wherein, the cavity is provided with a power distribution module and a master control module 301 of the battery management system, the power distribution module is electrically connected with the battery management system and is used for distributing power for the battery management system.

[0024] In the embodiment, the master control box comprises a box body 10 and a box door 20 rotatably connected with the box body 10. The box body 10 is provided with an open cavity, and various electrical modules can be installed in the cavity.

[0025] Meanwhile, the cavity can be provided with a power distribution module and a master control module 301 of a battery management system. The power distribution module can be electrically connected with high-voltage components through busbars and wiring harnesses.

[0026] The battery management system (BMS) mainly includes functions of monitoring battery status, controlling charging process, distributing electric energy, and protecting the battery. The battery management system is composed of a master control module 301 and a slave control module. The master control module 301 is responsible for functions of collecting total voltage and total current, communicating with the inside and outside, recording faults, and making decisions. The slave control module is usually responsible for functions of collecting single-cell voltage, collecting temperature, and balancing.

[0027] The master control box provided by the application not only has efficient power distribution and management functions, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high-reliability power management and monitoring.

[0028] The master control box provided by the application comprises a box body 10 and a box door 20. The box body 10 is provided with an open cavity. The box door 20 is rotatably connected with the box body 10 and closes the cavity at the opening. The cavity is provided with a power distribution module and a master control module 301 of a battery management system. The power distribution module is electrically connected with the battery management system and is used for distributing power to the battery management system, so as to provide auxiliary power for the battery management system. In this way, the power distribution and control are integrated in the master control box, and the master control of the battery management system does not need to be integrated in the busbar cabinet, thereby reducing the volume of the busbar cabinet and the occupied space of the busbar cabinet in the energy storage cabinet, and optimizing the layout of power distribution, busbar connection, and fire protection of the energy storage cabinet.

[0029] In some embodiments, the power distribution module is an alternating-current power distribution module.

[0030] In the embodiment, the alternating-current power distribution module can distribute the alternating-current power provided from the outside to the battery management system, so as to provide auxiliary power for the battery management system. In this way, the effective distribution and management of the power can be realized, and the stable operation and high efficiency of the battery management system are ensured.

[0031] It should be noted that the power distribution module can also be a direct-current power distribution module, which can also be used to distribute power to the battery management system to provide auxiliary power for the battery management system.

[0032] In addition, the power distribution module can further include an AC power distribution module and a DC power distribution module, and the AC power distribution module and the DC power distribution module can be installed in isolation in the master control box, so that AC and DC isolation can be achieved, and the safety of the battery management system is improved.

[0033] In some embodiments, as shown in FIGS. 1 and 5, the master control module 301 is arranged on a first surface of the box door 20 close to the opening.

[0034] In this embodiment, the master control module 301 can be arranged on the inner wall of the box door 20, i.e., the first surface. When the box door 20 is closed, the master control module 301 is in the cavity of the box body 10.

[0035] By arranging the master control module 301 on the first surface, the application can reduce the occupied area of the inner wall of the box body 10, thereby providing more space for other components, and greatly improving the space utilization of the master control box.

[0036] In some embodiments, as shown in FIGS. 1 and 5, the first surface is further provided with a wiring duct 201 surrounding the master control module 301.

[0037] In this embodiment, the inner side of the box door 20 is provided with a wiring duct 201 surrounding the master control module 301, so that the master control module 301 can be conveniently electrically connected with other components. The wiring duct 201 is provided with a plurality of wiring holes, and the wire harness can pass through the wiring holes and pass through the wiring duct 201 to be electrically connected with other components.

[0038] In some embodiments, at least one of the display module 3021, the protection module, the operation module 304, and the status module 305 of the battery management system is arranged on a second surface of the box door 20 away from the opening.

[0039] In this embodiment, the second surface is the outer surface of the box door 20, which corresponds to the first surface. The display module 3021, the operation module 304, and the status module 305 of the battery management system are arranged on the box door 20 and installed through the box door 20.

[0040] Specifically, as shown in FIGS. 1, 3, and 5, the display module 3021 can be a display screen, which can be a display control screen of the battery management system. The operation module 304 can include an emergency stop button 3041 and a switch-on / off button 3042. The status module 305 can be an indicator light. In addition, the box door 20 can be further provided with an ammeter 3022.

[0041] 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 interface and various protection functions, and ensures the safety and efficient management of the battery. The emergency stop button 3041 is a device for quickly stopping the battery management system in an emergency. The on-off button 3042 is used 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 on-off button 3042 is to realize the closing (closing) and opening (opening) of the circuit breaker by manual or electric means. The indicator light can display whether the battery management system is running and whether the running is normal.

[0042] In some embodiments, the power distribution module includes an incoming line switch 401, a mutual inductor, and a switching power supply 403. The bottom of the box 10 is provided with at least one incoming line hole 101, and the incoming line switch 401 is close to the incoming line hole 101. One end of the mutual inductor is electrically connected to the incoming line switch 401, and the other end of the mutual inductor is electrically connected to the switching power supply 403.

[0043] In this embodiment, the incoming line switch 401 can be an AC incoming line circuit breaker, the mutual inductor 402 can be a current transformer, and the switching power supply 403 can convert AC power into DC power to provide auxiliary power for the battery management system.

[0044] Specifically, as shown in FIGS. 1 and 4, the AC incoming line circuit breaker can be a plastic shell circuit breaker, and the cavity is also provided with a terminal strip 501 and a adapter terminal 502. The terminal strip 501 is arranged at the upper end of the main control box and close to the top of the main control box.

[0045] In some embodiments, the power distribution module further includes a DC switch 404 and a delay switch 405. The DC switch 404 is electrically connected to the DC output end of the switching power supply 403, and the delay switch 405 is electrically connected to the main control module 301 and the switching power supply 403, respectively.

[0046] In this embodiment, the DC switch 404 can be a loop switch, and the delay switch 405 can be used to delay the on-off of the battery management system.

[0047] Specifically, as shown in FIGS. 1 and 4, the loop switch can be a miniature circuit breaker, and the delay switch 405 can be an intermediate relay.

[0048] At the same time, the inside of the box 10 is also provided with a surge protector 3031.

[0049] In some embodiments, as shown in FIGS. 1 and 4, the cavity is also provided with a wiring groove 103, and the wiring grooves 103 are close to the two sides of the box 10, respectively.

[0050] In this embodiment, the internal space of the box 10 is provided with a plurality of wiring grooves 103, two of which extend from the top to the bottom of the main control box, respectively.

[0051] In addition, the upper and lower sides of the surge protector are provided with wiring grooves 103, the upper side of the upper wiring groove 103 is provided with a miniature circuit breaker, and the lower side of the lower wiring groove 103 is provided with a miniature circuit breaker.

[0052] In some embodiments, as shown in FIGS. 2 and 5, the third surface of the box 10 away from the cavity is provided with a mounting member 104.

[0053] In this embodiment, the mounting member 104 includes a bearing part 1041 and a mounting part 1042, the bearing part 1041 is provided with a first through hole 1043, the mounting part 1042 is provided with a second through hole 1044, and the bearing part 1041 can be fixed to the main control box by screwing through the first through hole 1043 after bearing the main control box; the mounting part 1042 can also be fixed to the energy storage cabinet by screwing through the second through hole 1044 after contacting the energy storage cabinet.

[0054] In addition, as shown in FIG. 2, a plurality of heat dissipation holes 102 can be arranged on the left and right sides of the box 10 to facilitate heat dissipation of components in the main control box.

[0055] At the same time, the bottom of the box 10 is also provided with a plurality of wire inlet holes 101, and the wire harness can directly reach the wiring groove 103 through the wire inlet hole 101 to realize the electrical connection of each component in the main control box.

[0056] In some embodiments, the application also provides an energy storage cabinet, which includes the main control box mentioned in the application.

[0057] Specifically, the energy storage cabinet can be a battery prefabricated cabin type battery energy storage cabinet, which can effectively guarantee the safe and efficient operation of the energy storage project and provide important support for the wide application of renewable energy.

Claims

1. A master control box, comprising: a box body (10) provided with an open cavity; a box door (20) rotatably connected with the box body (10) and closing the cavity at the opening; wherein the cavity is provided with a master control module of a power distribution module and a battery management system, the power distribution module is electrically connected with the battery management system and is used for distributing power supply for the battery management system.

2. The master box of claim 1, wherein, The power distribution module is an alternating current power distribution module.

3. The master box of any of claims 1-2, wherein, The master control module is arranged on a first surface of the box door (20) close to the opening.

4. The master box of claim 3, wherein, The first surface is further provided with a wiring duct (201) surrounding the master control module (301).

5. The master box of any one of claims 1-4, wherein, At least one of a display module (3021), an operation module (304) and a status module (305) of the battery management system is arranged on a second surface of the box door (20) away from the opening.

6. The master box of any one of claims 1-5, wherein, The power distribution module comprises a line switch (401), a mutual inductor (402) and a switching power supply (403); wherein the box body (10) is provided with at least one line hole (101) at the bottom, the line switch (401) is close to the line hole (101), one end of the mutual inductor (402) is electrically connected with the line switch (401), and the other end of the mutual inductor (402) is electrically connected with the switching power supply (403).

7. The master box of claim 6, wherein, The power distribution module further comprises a direct current switch (404) and a time delay switch (405); wherein the direct current switch (404) is electrically connected with a direct current output end of the switching power supply, and the time delay switch (405) is respectively electrically connected with the master control module (301) and the switching power supply.

8. The master box of any one of claims 1-7, wherein, The cavity is further provided with a wiring groove (103), and the wiring groove (103) is respectively close to both sides of the box body (10).

9. The master box of any one of claims 1-8, wherein, A mounting part (104) is arranged on a third surface of the box body (10) away from the cavity.

10. An energy storage cabinet comprising: The master control box according to any one of claims 1-9.

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