Energy storage cabinet

Abstract

An energy storage cabinet relates to the field of energy storage equipment. Comprising a cabinet body, a high-voltage box, a battery pack, energy management equipment, an electrical box and an air conditioner, a fan baffle is arranged at the top end of the cabinet body, and the high-voltage box is placed at the upper end of the battery pack; a communication port, a battery cluster input negative end general interface, a high-voltage box output negative interface, a high-voltage box output positive interface and a battery cluster input positive end interface in the high-voltage box adopt an integrated plug structure; the energy management equipment and the air conditioner are installed in the same space, the air conditioner adopts a double-air-duct design, the upper air duct leads to the high-voltage box, and the lower air duct leads to the battery pack; and the energy management equipment is provided with an upgrading interface and a dual fire-fighting monitoring system. According to the double-air-duct air conditioner, the temperature control efficiency of the air conditioner is greatly improved, and it is guaranteed that the internal temperature is stable when the energy storage cabinet operates; the energy storage cabinet is provided with double monitoring layers, so that the operation states of the high-voltage box and the battery pack can be monitored more accurately, and when a thermal runaway chain reaction occurs, a response can be made in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage devices, in particular to an energy storage cabinet. BACKGROUND

[0002] As a comprehensive technical achievement, the energy storage cabinet deeply integrates the technical achievements in key fields such as lithium batteries, power electronics, digital control and safety management. Under the promotion of the "double carbon" strategic goal, with the continuous development and maturity of various underlying technologies, the energy storage cabinet gradually forms a product form with "safer, longer, more efficient and more economical" as the core development direction. It not only realizes an effective balance between storage capacity, floor area and cost, but also becomes an important infrastructure to support the new energy system.

[0003] As an integrated device, the energy storage cabinet usually lacks a double air duct design for the air conditioner inside the cabinet, and the temperature control efficiency is poor. The internal temperature is unstable during operation. The fire extinguishing system usually lacks a gas monitoring system, and cannot form a double monitoring with the electrical detection system of the energy management device. The timely response is poor when thermal runaway occurs. The energy management device usually lacks an upgrade interface of the USB physical interface standard, which is not convenient for later vulnerability repair and operation strategy optimization of the energy management device.

[0004] In addition, there are many components and units inside the energy storage cabinet, and a large number of cables with different specifications need to be laid. This not only causes the layout inside the cabinet to be crowded, the heat dissipation to be limited, and the lines to be easily connected incorrectly, but also causes the lines to be easily loose and oxidized due to the large number of line nodes, resulting in increased contact resistance, local overheating and other faults. At the same time, the dense wire harness also hinders fault diagnosis and component replacement, significantly increasing the difficulty and safety risk of system maintenance. SUMMARY

[0005] The present application aims to provide an energy storage cabinet to solve the problems of unstable internal temperature during operation of the energy storage cabinet, poor timely response when thermal runaway occurs, inconvenience for later vulnerability repair and operation strategy optimization of the energy management device, and inconvenient maintenance of components inside the energy storage cabinet.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0007] An energy storage cabinet, comprising a cabinet body, a high-voltage box, a battery pack, an energy management device, an electrical box and an air conditioner, wherein the cabinet body is provided with a fan baffle at the top end, the high-voltage box is placed on the upper end of the battery pack, the communication port in the high-voltage box, the battery cluster input negative end total interface, the high-voltage box output negative interface, the high-voltage box output positive interface and the battery cluster input positive end interface all adopt an integrated plug structure; the energy management device and the air conditioner are installed in the same space, the air conditioner adopts a double air duct design, the upper air duct leads to the high-voltage box, and the lower air duct leads to the battery pack; the energy management device is provided with an upgrade interface and a double fire monitoring system.

[0008] Preferably, the energy management device is separated by a back panel and an air conditioner is installed thereon. The front is the energy management device and the back is the air conditioner. The lower end of the back panel has a wire hole one and a wire hole two. The front, back and right sides of the energy management device are enclosed by a mesh door.

[0009] Preferably, a fixing block is provided on the rear side of the battery pack, a high-voltage box baffle is provided on the left side of the high-voltage box, and a thermal aerosol fire extinguishing system is provided in the middle of the battery pack and the high-voltage box baffle. The thermal aerosol fire extinguishing system is equipped with sensors on the outside to monitor the status of the high-voltage box and the battery pack in real time and establish a communication connection with the energy management equipment as the first monitoring layer. The communication port is connected to the A interface of the BMS slave through a wiring harness to establish a second monitoring layer.

[0010] Preferably, the battery pack is externally provided with a BMS slave, a battery negative interface, a battery positive interface and a handle, and internally provided with a left battery cell and a right battery cell. The upper end of the battery pack has a communication output line hole and a communication input line hole, and the left battery cell and the right battery cell are electrically connected to the BMS slave respectively.

[0011] Preferably, the energy management device has a mounting ear on the left side, a display screen in the middle, an exhaust valve and a latch on the right side, and a communication port, an upgrade interface, a WiFi interface, a motor interface, a photovoltaic positive interface and a photovoltaic negative interface from left to right at the bottom.

[0012] Preferably, the negative output interface of the high-voltage box is connected to the positive photovoltaic interface of the energy management device, and the positive output interface of the high-voltage box is connected to the negative photovoltaic interface of the energy management device.

[0013] Preferably, the electrical box is assembled from a right circuit breaker fixing plate, a top circuit breaker cover plate, a left rear circuit breaker fixing plate, a bottom circuit breaker cover plate, and a front circuit breaker baffle plate. An opening is provided on the front circuit breaker baffle plate, and an aluminum guide rail is fixed to the left rear circuit breaker fixing plate.

[0014] Preferably, the air conditioner has an upper air duct and a lower air duct at its rear end, which are fixed to the cabinet by the upper air duct fixing plate and the lower air duct fixing plate, respectively.

[0015] Preferably, the fan baffle is provided with a hand hole and a fixing plate, and the hand hole is fixed to the left and right sides of the fan baffle respectively through the hand hole fixing hole.

[0016] Preferably, the mesh door is equipped with a bolt lock, which is locked to the cabinet through the bolt hole, and the surface of the mesh door is provided with fan-shaped mesh holes.

[0017] The present invention has the following effects:

[0018] 1. The air conditioner of this invention adopts a dual-duct design, with the upper duct leading to the high-voltage box and the lower duct leading to the battery pack, which greatly improves the temperature control efficiency of the air conditioner and ensures the stability of the internal temperature of the energy storage cabinet during operation.

[0019] 2. The energy storage cabinet of the present invention has a dual monitoring layer, which can more accurately monitor the operating status of the high voltage box and the battery pack. When a thermal runaway chain reaction occurs, it can respond in a timely manner, achieving early warning and in-process suppression.

[0020] 3. The energy management device of the present invention is equipped with an upgrade interface and adopts the USB physical interface standard. For energy storage cabinets sold to remote countries, it greatly reduces the complexity of on-site operation and reduces the network dependence for subsequent energy management device vulnerability repair and operation strategy optimization.

[0021] 4. The cabinet of the present invention uses mesh doors to seal off certain areas of the structure. This not only promotes airflow inside the energy storage cabinet and prevents large particles of foreign objects from entering the cabinet, but also provides an observable view of the internal structure of the equipment, reducing the cost of later maintenance.

[0022] 5. This invention improves the aesthetics of the energy storage cabinet and reduces the time and cost of wiring harness installation for assembly personnel by creating openings in the back panel of the energy management equipment and allowing for the placement and installation of wiring harnesses through the openings.

[0023] 6. The interfaces of the energy management equipment and high-voltage box of the present invention adopt an integrated plug structure and are connected by an integrated plug harness, which can greatly reduce the occurrence of loose wire nodes and reduce the difficulty of component replacement. Attached Figure Description

[0024] Figure 1 This is a front structural view of the energy storage cabinet of the present invention;

[0025] Figure 2 This is a front view of the high-pressure box structure of the present invention;

[0026] Figure 3 This is a front view of the battery pack structure of the present invention;

[0027] Figure 4 This is a front structural view of the fan baffle of the present invention;

[0028] Figure 5 This is a front view of the energy management device of the present invention;

[0029] Figure 6 This is a front view of the mesh door structure of the present invention;

[0030] Figure 7 This is a cross-sectional view of the internal structure of the energy storage cabinet of the present invention;

[0031] Figure 8 This is a front view of the electrical box of the present invention;

[0032] Figure 9This is a top view of the electrical box of the present invention;

[0033] Figure 10 This is a structural diagram of the back of the air conditioner according to the present invention.

[0034] The numbers on the map are:

[0035] 1. High-voltage box; 11. Power button; 12. Battery cluster switch handle; 13. Handle one; 14. Communication port; 15. Battery cluster input negative terminal main interface; 16. High-voltage box output negative interface; 17. High-voltage box output positive interface; 18. Battery cluster input positive terminal interface; 19. Enable air switch; 101. Cabinet; 111. High-voltage box baffle; 112. Thermal aerosol fire extinguishing system; 1121. Sensor; 113. Fixing block; 2. Battery pack; 21. Communication output cable hole one; 211. Front baffle; 22. Communication input cable hole two; 23. Battery negative interface; 24. Battery positive interface; 25. BMS slave; 251. A interface; 252. B interface; 26. Handle two; 27. Left battery cell; 28. Right battery cell; 3. Battery pack baffle; 4. Fan baffle; 41. Hand hole; 42. Fixing block 43. Fixed plate; 5. Hand hole fixing position; 5. Energy management equipment; 51. Mounting ear; 511. Exhaust valve; 52. Communication port; 53. Upgrade interface; 54. WiFi interface; 55. Motor interface; 56. Photovoltaic positive interface; 57. Photovoltaic negative interface; 58. Lock; 59. Display screen; 6. Electrical box; 61. Right fixing plate of circuit breaker; 62. Fixing hole one; 63. Circuit breaker opening; 64. Top cover plate of circuit breaker; 65. Bottom cover plate of circuit breaker; 66. Aluminum guide rail; 67. Fixing hole two; 68. Left rear fixing plate of circuit breaker; 69. Front baffle of circuit breaker; 7. Mesh door; 71. Pin hole; 72. Pin lock; 73. Fan-type mesh; 8. Air conditioner; 81. Upper air duct; 82. Upper air duct fixing plate; 83. Lower air duct; 84. Lower air duct fixing plate; 85. Back plate; 9. Cable hole one; 10. Cable hole two. Detailed Implementation

[0036] To better understand the purpose, structure, and function of this invention, a detailed description of an energy storage cabinet according to the present invention is provided below with reference to the accompanying drawings. It should be emphasized that the structural forms described in the following embodiments are merely illustrative, and the energy storage cabinet involved in this invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0037] like Figure 1 , 2As shown in Figures 6 and 10, an energy storage cabinet includes a cabinet body 101, a high-voltage box 1, a battery pack 2, an energy management device 5, and an electrical box 6. The high-voltage box 1 is placed on top of the battery pack 2. The high-voltage box integrates various component modules, which can control the battery clusters formed by the battery packs. Placing it on top of the battery pack facilitates adjustment and use by the equipment user. The energy management device 5 and the air conditioner 8 are installed in the same space, and their front, rear, and right sides are enclosed by mesh doors 7. Preferably, the energy management device 5 is on the front, and the air conditioner 8 is installed on the back through a back panel 85. The mesh doors can promote the circulation of air between the cabinet and the outside, providing heat dissipation conditions for the internal structure of the cabinet. The top of the cabinet 101 is equipped with a fan baffle 4, and the lower end of the back panel 85 has wire hole 9 and wire hole 10. The high-voltage box 1 is equipped with a communication port 14, a power button 11, a battery pack switch handle 12, a battery pack input negative terminal interface 15, a high-voltage box output negative interface 16, a high-voltage box output positive interface 17, a battery pack input positive terminal interface 18, and an enable air switch 19. All interfaces adopt an integrated plug design. The power button 11 is the master control of the battery pack and is used for daily start and stop. The enable air switch 19 is used to safely disconnect the high-voltage circuit. The battery pack switch handle 12 is a barrier to ensure absolute safety during long-term maintenance. In case of emergency, the safest and most effective action is to immediately disconnect the enable air switch 19. Handles 13 are welded to the left and right ends of the high-voltage box 1. Handles 13 facilitate the handling of the high-voltage box and prevent injury to personnel during the installation of the high-voltage box 1. The air conditioner 8 adopts a dual-duct design. The upper duct 81 leads to the high-pressure box 1 and is used to dilute the heat generated by the high-pressure box 1 during operation to maintain the stability of the system. The lower duct 83 leads to the battery pack 2 and is used to maintain the stable operating environment of the battery pack 2. The energy management device 5 is equipped with an upgrade interface 53.

[0038] like Figure 3 As shown, the battery pack 2 is externally equipped with a BMS slave unit 25, a battery negative interface 23, a battery positive interface 24, and a handle 26. The battery pack 2 contains a left cell 27 and a right cell 28. The upper end of the battery pack 2 has a communication output hole 21 and a communication input hole 22. The left cell 27 is connected to the BMS slave unit 25 by a wiring harness, which passes through the communication input hole 22. The right cell 28 is also connected to the BMS slave unit 25 by a wiring harness, which passes through the communication input hole 21. This allows the BMS slave unit 25 to accurately measure the voltage of each cell. Temperature sensors distributed at multiple points inside the battery pack 2 monitor the temperature of the cells and modules, thus enabling monitoring of the cells inside the battery pack 2. The battery pack 2 is placed sequentially from top to bottom at the lower end of the high-voltage box 1.

[0039] like Figure 2 , Figure 3As shown, the A interface 251 of battery pack 2 is connected to the B interface 252 of the next battery pack 2 via a wiring harness, the B interface 252 of battery pack 2 is connected to the A interface 251 of the next battery pack 2 via a wiring harness, the B interface 252 of the bottom battery pack is connected to the communication port 14 on the high-voltage box 1 via a wiring harness, the positive battery interface 24 of battery pack 2 is connected to the negative battery interface 23 of the next battery pack 2 via a wiring harness, the negative input interface 15 of the battery cluster of the high-voltage box 1 is connected to the positive battery interface 24 of the bottom battery pack 2 via a wiring harness, and the positive input interface 18 of the battery cluster is connected to the negative battery interface 23 of the top battery pack via a wiring harness. By connecting the wiring harnesses between each battery pack 2, the series connection of the cells in the energy storage cabinet is realized, providing a stable voltage for the equipment. By connecting the wiring harnesses between the battery pack 2 and the high-voltage box 1, the high-voltage box 1 can control the overall power of the energy storage cabinet, which is convenient for subsequent debugging and use.

[0040] like Figure 5 As shown, the energy management device 5 has a mounting ear 51 on the left, a display screen 59 in the middle, and an exhaust valve 511 and a latch 58 on the right. The mounting ear 51 not only serves as a handle but also as a positioning and fastening block. The display screen 59 can intuitively display the remaining available power of the energy storage cabinet 101. The latch 58 provides effective dustproof, moisture-proof, and waterproof protection for the energy management device 5 by tightening it. When the energy management device 5 is working normally, the exhaust valve 511 is in a closed and sealed state, which can effectively prevent external dust, moisture, salt spray, and other contaminants from entering the device, protecting the delicate electronic components and batteries and ensuring their reliable operation. The lower end of the energy management device 5, from left to right, is equipped with a communication port 52, an upgrade interface 53, a WiFi interface 54, a motor interface 55, a photovoltaic positive interface 56, and a photovoltaic negative interface 57. The upgrade interface 53 adopts the universal USB physical interface standard and follows the universal USB communication protocol, and is used for firmware upgrades and external data communication.

[0041] like Figure 1 , 2 As shown in Figure 5, the negative output interface 16 of the high-voltage box 1 is connected to the photovoltaic positive interface 56 of the energy management device 5 via a wire harness and through wire hole 19. The positive output interface 17 of the high-voltage box is connected to the photovoltaic negative interface 57 of the energy management device 5 via a wire harness and through wire hole 210.

[0042] like Figure 3 , 5As shown in Figure 7, a fixing block 113 is provided on the rear side of the battery pack 2. The fixing block 113 can limit the displacement of the battery pack 2 and reduce the possibility of the battery pack 2 contacting the cabinet. A high-voltage box baffle 111 is provided on the left side of the high-voltage box 1. A thermal aerosol fire extinguishing system 112 is provided on the middle side plate of the battery pack 2 and the high-voltage box baffle 111. The fire extinguishing system can control and limit the fire to the smallest possible area in the event of a disaster, thereby buying time for personnel evacuation and subsequent disposal, maximizing personal safety, protecting core assets from devastating damage, and preventing catastrophic consequences from spreading to the entire energy storage power station and the surrounding environment. The thermal aerosol fire extinguishing system 112 is a fire extinguishing device that generates a large number of ultrafine fire extinguishing aerosol particles through the combustion reaction of solid chemical agents to suppress or extinguish fires. It has the characteristics of rapid fire extinguishing speed and can effectively suppress flames generated by battery thermal runaway. The thermal aerosol fire extinguishing system 112 is equipped with an external sensor 1121 for real-time monitoring of the status of the high-voltage box 1 and the battery pack 2, and establishes a communication connection with the energy management device 5 as the first monitoring layer. The communication port 52 is connected to the A interface 251 of the BMS slave 25 through a wiring harness to establish a second monitoring layer. The first monitoring layer monitors the content of carbon monoxide, hydrogen and VOC in the energy storage cabinet through the gas sensor 1121 to determine whether the battery cell is out of control. The second monitoring layer monitors the operating status of the battery cell through the BMS to determine whether the battery cell is normal. When the first monitoring layer determines that it is out of control and the second monitoring layer determines that it is abnormal, the thermal aerosol fire extinguishing system 112 is immediately activated.

[0043] like Figure 8 , 9 As shown, the electrical box 6 consists of a right circuit breaker fixing plate 61, a circuit breaker upper cover plate 64, a circuit breaker left rear fixing plate 68, a circuit breaker bottom cover plate 65, and a circuit breaker front baffle plate 69. This structure has upper and lower openings. The circuit breaker front baffle plate 69 has an opening 63. The aluminum guide rail 66 is installed on the circuit breaker left rear fixing plate 68 with self-tapping screws. The air switch is fixed on the aluminum guide rail 66. By modifying the wiring harness on the air switch through the upper and lower openings of the electrical box 6, the difficulty and time cost of troubleshooting problems in the later maintenance of the energy storage cabinet are reduced. The circuit breaker upper cover plate 64 and the circuit breaker front baffle plate 69 are connected by nuts through fixing hole two 67. The circuit breaker right fixing plate 61 is connected to the cabinet 101 by nuts through fixing hole one 62.

[0044] like Figure 1 , 4As shown in Figure 10, the rear end of the air conditioner 8 is provided with an upper air duct 81 and a lower air duct 83, which are fixed to the cabinet 101 by the upper air duct fixing plate 82 and the lower air duct fixing plate 84, respectively. The fan baffle 4 is provided with a hand hole 41 and a fixing plate 42. The hand hole 41 is fixed to the left and right sides of the fan baffle 4 by its fixing hole 43. The hand hole 41 has a handle lifting function and has a fixing hole inside. The fan baffle 4 can be fixed to the cabinet 101 by nuts. The fixing plate is located in the middle position, which can effectively ensure the structural stability of the fan baffle 4.

[0045] like Figure 6 As shown, the mesh door 7 is equipped with a bolt lock 72, which is locked to the cabinet 101 through the bolt hole 71. The surface of the mesh door 7 is provided with fan-shaped mesh holes 73. Due to its special air hole structure, the mesh door 7 can promote airflow in the energy storage cabinet, block large particles of foreign objects from entering the cabinet, and provide an observable view of the internal structure of the equipment, thus reducing the cost of later maintenance.

[0046] It is understood that the present invention has been described with reference to the above figures. Various changes or equivalent substitutions can be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by the present invention.

Claims

1. An energy storage cabinet, comprising: The cabinet (101), high-voltage box (1), battery pack (2), energy management device (5), electrical box (6), and air conditioner (8) are characterized in that a fan baffle (4) is provided at the top of the cabinet (101), the high-voltage box (1) is placed on the top of the battery pack (2), and the communication port (14), the battery pack input negative terminal interface (15), the high-voltage box output negative interface (16), the high-voltage box output positive interface (17), and the battery pack input positive terminal interface (18) in the high-voltage box (1) all adopt an integrated plug structure; the energy management device (5) and the air conditioner (8) are installed in the same space, and the air conditioner (8) adopts a dual air duct design, with the upper air duct (81) leading to the high-voltage box (1) and the lower air duct (83) leading to the battery pack (2); the energy management device (5) is equipped with an upgrade interface (53) and a dual fire monitoring system.

2. The energy storage cabinet according to claim 1, characterized in that: The energy management device (5) is separated by a back panel (85) and an air conditioner (8) is installed thereon. The front is the energy management device (5) and the back is the air conditioner (8). The lower end of the back panel (85) has a wire hole one (9) and a wire hole two (10). The front, back and right sides of the energy management device (5) are enclosed by a mesh door (7).

3. The energy storage cabinet according to claim 1, characterized in that: A fixing block (113) is provided on the rear side of the battery pack (2), and a high-voltage box baffle (111) is provided on the left side of the high-voltage box (1). A thermal aerosol fire extinguishing system (112) is provided in the middle of the battery pack (2) and the high-voltage box baffle (111). The thermal aerosol fire extinguishing system (112) is equipped with a sensor (1121) on the outside, which is used to monitor the status of the high-voltage box (1) and the battery pack (2) in real time and establish a communication connection with the energy management device (5) as the first monitoring layer. The communication port (52) is connected to the A interface (251) of the BMS slave through a wire harness to establish the second monitoring layer.

4. The energy storage cabinet according to claim 1, characterized in that: The battery pack (2) is externally equipped with a BMS slave (25), a battery negative interface (23), a battery positive interface (24), and a handle (26). The battery pack (2) is internally equipped with a left battery cell (27) and a right battery cell (28). The upper end of the battery pack (2) has a communication output line hole (21) and a communication input line hole (22). The left battery cell (27) and the right battery cell (28) are electrically connected to the BMS slave (25) respectively.

5. The energy storage cabinet according to claim 1, characterized in that: The energy management device (5) has a mounting ear (51) on the left side, a display screen (59) in the middle, an exhaust valve (511) and a latch (58) on the right side, and a communication port (52), an upgrade interface (53), a WiFi interface (54), a motor interface (55), a photovoltaic positive interface (56), and a photovoltaic negative interface (57) from left to right at the bottom.

6. The energy storage cabinet according to claim 1, characterized in that: The negative output interface (16) of the high-voltage box (1) is connected to the photovoltaic positive interface (56) of the energy management device (5), and the positive output interface (17) of the high-voltage box is connected to the photovoltaic negative interface (57) of the energy management device (5).

7. The energy storage cabinet according to claim 1, characterized in that: The electrical box (6) is installed by the right fixing plate (61) of the circuit breaker, the upper cover plate (64) of the circuit breaker, the left rear fixing plate (68) of the circuit breaker, the bottom cover plate (65) of the circuit breaker and the front baffle plate (69) of the circuit breaker. The front baffle plate (69) of the circuit breaker has an opening (63) and the aluminum guide rail (66) is fixed to the left rear fixing plate (68) of the circuit breaker.

8. An energy storage cabinet according to claim 1, characterized in that: The air conditioner (8) has an upper air duct (81) and a lower air duct (83) at its rear end, which are fixed to the cabinet (101) by the upper air duct fixing plate (82) and the lower air duct fixing plate (84) respectively.

9. An energy storage cabinet according to claim 1, characterized in that: The fan baffle (4) is provided with a hand hole (41) and a fixing plate (42). The hand hole (41) is fixed to the left and right sides of the fan baffle (4) respectively through the hand hole fixing hole (43).

10. An energy storage cabinet according to claim 2, characterized in that: The mesh door (7) is equipped with a latch lock (72) and is locked to the cabinet (101) through the latch hole (71). The surface of the mesh door (7) is provided with fan-shaped mesh holes (73).

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