Air-cooled energy storage cabinet

Abstract

The utility model relates to an air-cooled energy storage cabinet, which relates to the technical field of energy storage and comprises an energy storage converter, a direct-current high-voltage box, a battery system, a cooling system, a first circuit breaker and a second circuit breaker, an input interface of the energy storage converter is connected to a power grid system through the first circuit breaker, and an output interface of the energy storage converter is electrically connected with an input interface of the direct-current high-voltage box; an output interface of the direct-current high-voltage box is electrically connected with an input interface of the battery system, the battery system is formed by connecting n single batteries in series, and n is a positive integer greater than 2; the wire inlet end of the second circuit breaker is electrically connected between the first circuit breaker and the power grid system, the wire outlet end of the second circuit breaker is electrically connected with the cooling system, and the cooling system is used for integrally cooling the air-cooled energy storage cabinet. The energy storage cabinet has the effect of improving the integration degree of the energy storage cabinet.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of energy storage, in particular to a forced air cooling energy storage cabinet. BACKGROUND

[0002] The energy storage cabinet is a device for storing and managing electric energy, which is usually an integrated system for storing electric energy in batteries or other energy storage devices and releasing electric energy when needed. The energy storage cabinet is widely used in the fields of renewable energy systems, power dispatching, power grid balancing, emergency power supply and the like.

[0003] The energy storage cabinet of the related art comprises a battery pack, an energy storage converter and a battery management system. The input end of the energy storage converter is connected to a power grid system, and the output end of the energy storage converter is connected to the input end of the battery pack. The energy storage converter can convert alternating current provided by the power grid system into direct current and adjust the voltage of the direct current, so that the output voltage of the energy storage converter matches the battery pack. The battery management system can monitor the temperature of the battery pack in real time to prevent the temperature of the battery pack from being too high.

[0004] According to the related art described above, the inventors believe that there is a defect that the integration degree of the energy storage cabinet is low. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the integration degree of the energy storage cabinet, the application provides a forced air cooling energy storage cabinet.

[0006] The forced air cooling energy storage cabinet provided by the application adopts the following technical scheme:

[0007] The forced air cooling energy storage cabinet comprises an energy storage converter, a direct current high-voltage box, a battery system, a cooling system, a first circuit breaker and a second circuit breaker. The input interface of the energy storage converter is connected to a power grid system through the first circuit breaker, and the output interface of the energy storage converter is electrically connected to the input interface of the direct current high-voltage box. The output interface of the direct current high-voltage box is electrically connected to the input interface of the battery system, and the battery system is composed of n single batteries in series, wherein n is a positive integer greater than 2. The incoming line end of the second circuit breaker is electrically connected between the first circuit breaker and the power grid system, and the outgoing line end of the second circuit breaker is electrically connected to the cooling system. The cooling system is used for overall cooling of the forced air cooling energy storage cabinet.

[0008] By adopting the above technical scheme, the energy storage converter, the direct current high-voltage box, the battery system and the cooling system are all integrated into the forced air cooling energy storage cabinet, which not only provides sufficient heat dissipation efficiency for the forced air cooling energy storage cabinet, but also reduces the volume of the energy storage converter and improves the integration degree of the forced air cooling energy storage cabinet.

[0009] Optionally, the heat dissipation system comprises a heat dissipation fan and an air conditioning device; the heat dissipation fan is used to send external air to the air conditioning device for heat exchange and to circulate the air in the air-cooled energy storage cabinet.

[0010] By using the above technical scheme, the heat dissipation fan and the air conditioning device are combined for use, which can effectively reduce the high-heat environment in the air-cooled energy storage cabinet and also reduce the noise generated by the heat dissipation fan and the overall noise level.

[0011] Optionally, the input end of the air conditioning device is electrically connected to the outgoing end of the second circuit breaker through a third circuit breaker.

[0012] By using the above technical scheme, the air conditioning device is integrated into the air-cooled energy storage cabinet, improving the integration of the air-cooled energy storage cabinet.

[0013] Optionally, the input end of the heat dissipation fan is electrically connected to the outgoing end of the second circuit breaker through a fourth circuit breaker.

[0014] By using the above technical scheme, the heat dissipation fan is integrated into the air-cooled energy storage cabinet, improving the integration of the air-cooled energy storage cabinet.

[0015] Optionally, the air-cooled energy storage cabinet further comprises an uninterruptible power supply, a circuit breaker tripping drive, a switching power supply group, a fifth circuit breaker, a sixth circuit breaker and a seventh circuit breaker; the outgoing end of the second circuit breaker is electrically connected to the incoming end of the seventh circuit breaker; the outgoing end of the seventh circuit breaker is electrically connected to the incoming end of the uninterruptible power supply; the outgoing end of the uninterruptible power supply is electrically connected to the circuit breaker tripping drive through the fifth circuit breaker; and the outgoing end of the uninterruptible power supply is electrically connected to the switching power supply group through the sixth circuit breaker.

[0016] By using the above technical scheme, the uninterruptible power supply, the circuit breaker tripping drive and the switching power supply group are provided in the air-cooled energy storage cabinet, so that the air-cooled energy storage cabinet provides multiple functions to the outside and also improves the integration of the air-cooled energy storage cabinet.

[0017] Optionally, the switching power supply group comprises a first switching power supply and a second switching power supply; the first switching power supply is connected to a high-voltage electrical box and a display screen; and the second switching power supply is connected to a terminal block, a water immersion host and a fire fighting system.

[0018] By using the above technical scheme, the high-voltage electrical box and the display screen and the terminal block, the water immersion host and the fire fighting system are dispersedly arranged, ensuring that the two do not interfere with each other and realizing physical isolation.

[0019] Optionally, the fire extinguishing system comprises a smoke sensor, a temperature sensor, an aerosol device, and a sound and light alarm set; the smoke sensor is configured to detect the amount of smoke inside the air-cooled energy storage cabinet; the temperature sensor is configured to detect the temperature value inside the air-cooled energy storage cabinet; the aerosol device is configured to spray aerosol gas when the amount of smoke is greater than a preset amount of smoke or the temperature value is greater than a preset temperature; and the sound and light alarm set is configured to generate a sound and light alarm signal when the amount of smoke is greater than the preset amount of smoke or the temperature value is greater than the preset temperature.

[0020] By adopting the above technical solutions, the state of the air-cooled energy storage cabinet can be monitored in real time, and the fire extinguishing measures can be automatically adjusted according to the preset fire extinguishing strategy, so as to ensure that the fire is timely and effectively controlled, and the overall safety of the air-cooled energy storage cabinet is improved.

[0021] Optionally, the air-cooled energy storage cabinet further comprises an eighth circuit breaker and an alternating current surge protector; the incoming line end of the eighth circuit breaker is electrically connected between the eighth circuit breaker and the power grid system, and the outgoing line end of the eighth circuit breaker is electrically connected with the alternating current surge protector.

[0022] By adopting the above technical solutions, the alternating current surge protector is arranged in the air-cooled energy storage cabinet, so as to protect the air-cooled energy storage cabinet from damage caused by sudden voltage surges in the power grid system, and to avoid damage to the air-cooled energy storage cabinet caused by excessive current.

[0023] Optionally, the n single batteries are placed in the energy storage cabinet in a head-to-tail manner, and the energy storage cabinet is slidably installed in the air-cooled energy storage cabinet.

[0024] By adopting the above technical solutions, the internal space of the energy storage cabinet is effectively utilized, unnecessary space waste is reduced, and the overall space utilization rate is improved; and when a single battery fails, it can be quickly removed and replaced with a new single battery, thereby shortening the maintenance time and reducing the maintenance cost.

[0025] Optionally, the battery system further comprises a monitoring system; the monitoring system is configured to detect basic parameters of the n single batteries; and the monitoring system is further configured to adjust the working state of the n single batteries according to the basic parameters.

[0026] By adopting the above technical solutions, the working state of the single battery can be monitored in real time, and the entire battery system can work normally.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The energy storage converter, DC high voltage box, battery system and cooling system are integrated into the air-cooled energy storage cabinet, which not only provides sufficient heat dissipation efficiency for the air-cooled energy storage cabinet, but also reduces the volume of the energy storage converter and improves the integration of the air-cooled energy storage cabinet.

[0029] 2. The combination of the cooling fan and the air conditioning equipment can effectively reduce the high heat environment in the air-cooled energy storage cabinet, and also can reduce the noise generated by the cooling fan and reduce the overall noise level.

[0030] 3. The state of the air-cooled energy storage cabinet can be monitored in real time, and the fire extinguishing measures can be automatically adjusted according to the preset fire extinguishing strategy to ensure that the fire is timely and effectively controlled, and the overall safety of the air-cooled energy storage cabinet is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of an air-cooled energy storage cabinet provided by an embodiment of the present application.

[0032] Figure 2 is an electrical schematic diagram of an air-cooled energy storage cabinet provided by an embodiment of the present application.

[0033] Figure 3 is a communication topology diagram of an air-cooled energy storage cabinet provided by an embodiment of the present application.

[0034] BRIEF DESCRIPTION OF DRAWINGS: 1, energy storage converter; 2, DC high voltage box; 3, battery system; 4, cooling system; 41, cooling fan; 42, air conditioning equipment; 43, uninterruptible power supply; 431, power supply; 44, circuit breaker tripping drive; 45, first switching power supply; 451, high voltage box; 452, display screen; 453, other electrical equipment; 46, second switching power supply; 461, terminal block; 462, water immersion host; 463, fire extinguishing system; 5, power grid system; 51, current transformer; 52, electric meter; 60, first circuit breaker; 61, second circuit breaker; 62, third circuit breaker; 63, fourth circuit breaker; 64, fifth circuit breaker; 65, sixth circuit breaker; 66, seventh circuit breaker; 67, eighth circuit breaker; 671, AC surge protector; 71, battery management unit; 72, battery charging management unit; 73, energy management unit; 74, energy management system; 75, power conversion system; 81, master switch; 82, emergency switch; 83, current sensor; 84, protection resistor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0036] The embodiment of the application discloses an air-cooled energy storage cabinet. Figure 1 The air-cooled energy storage cabinet comprises an energy storage converter 1, a direct-current high-voltage box 2, a battery system 3, a cooling system 4, a first circuit breaker 60 and a second circuit breaker 61. An input interface of the energy storage converter 1 is connected to a power grid system 5 through the first circuit breaker 60, and an output interface of the energy storage converter 1 is electrically connected to an input interface of the direct-current high-voltage box 2. An output interface of the direct-current high-voltage box 2 is electrically connected to an input interface of the battery system 3, and the battery system 3 is composed of n single batteries in series, wherein n is a positive integer greater than 2. A line-in end of the second circuit breaker 61 is electrically connected between the first circuit breaker 60 and the power grid system 5, a line-out end of the second circuit breaker 61 is electrically connected to the cooling system 4, and the cooling system 4 is used for overall cooling of the air-cooled energy storage cabinet.

[0037] Optionally, the first circuit breaker 60 is a molded case circuit breaker. Optionally, the second circuit breaker 61 is an alternating current circuit breaker.

[0038] Optionally, a current transformer 51 is further arranged at an input end of the power grid system 5.

[0039] Optionally, the power grid system 5 provides three-phase alternating current. A, B and C represent live wires, N represents a zero line, and PE represents a protective line. Optionally, a watt-hour meter 52 is arranged on the zero line.

[0040] Optionally, the air-cooled energy storage cabinet further comprises an eighth circuit breaker 67 and an alternating current surge protector 671. A line-in end of the eighth circuit breaker 67 is electrically connected between the eighth circuit breaker 67 and the power grid system 5, and a line-out end of the eighth circuit breaker 67 is electrically connected to the alternating current surge protector. Optionally, the eighth circuit breaker 67 is an alternating current circuit breaker.

[0041] The implementation principle of the air-cooled energy storage cabinet in the embodiment of the application is as follows: the power grid system 5 provides high-voltage alternating current to the energy storage converter 1, and the energy storage converter 1 converts the high-voltage alternating current into high-voltage direct current. Then, the direct-current high-voltage box 2 adjusts the voltage of the high-voltage direct current, so that the output voltage of the direct-current high-voltage box 2 matches the charging voltage of the battery system 3, thereby realizing charging of the battery system 3.

[0042] Embodiment 1

[0043] The heat dissipation system comprises a heat dissipation fan 41 and an air conditioning device 42. The heat dissipation fan 41 is used for sending external air to the air conditioning device 42 for heat exchange, and circulating air flow in the air-cooled energy storage cabinet.

[0044] Further, an input end of the air conditioning device 42 is electrically connected to a line-out end of the second circuit breaker 61 through a third circuit breaker 62. Optionally, the third circuit breaker 62 is an alternating current micro circuit breaker.

[0045] Further, the input end of the heat dissipation fan 41 is electrically connected to the outgoing end of the second circuit breaker 61 through a fourth circuit breaker 63. Optionally, the fourth circuit breaker 63 is an AC miniature circuit breaker.

[0046] The implementation principle of the air-cooled energy storage cabinet according to the embodiment of the present application is as follows: the air conditioning equipment 42 includes a compressor, a condenser throttling device, and an evaporator. After the air conditioning equipment 42 is powered on, the low-pressure steam of the refrigerant in the air conditioning equipment 42 is sucked into the compressor and compressed into high-pressure steam, which is then discharged to the condenser. At the same time, the air sucked in by the fan outside the cabinet flows through the condenser, taking away the heat released by the refrigerant, so that the high-pressure steam condenses into high-pressure liquid. The high-pressure liquid is injected into the evaporator after passing through the throttling device, and evaporates at a corresponding low pressure, absorbing heat from the surrounding environment to achieve cooling. On the other hand, the front cabinet door and the rear cabinet door of the air-cooled energy storage cabinet are designed with a bottom air inlet and outlet. After the heat dissipation fan 41 causes the air to continuously pass through the fins of the air conditioning evaporator for heat exchange, the cooled air after heat release is sent to the cabinet through the air inlet. In this way, the air in the cabinet continuously circulates, so that the cabinet has the functions of refrigeration, heating, air supply, and dehumidification; the two complement each other, not only greatly improving the heat dissipation efficiency to achieve the purpose of reducing the temperature, but also reducing the volume and overall product weight of the energy storage cabinet, and reducing the production and maintenance costs of the product; since the heat dissipation fan 41 is greatly affected by the external environment temperature and the use of a large number of heat dissipation fans 41 will generate a lot of noise for the air-cooled energy storage cabinet, the combination of the air conditioner and the heat dissipation fan 41 makes the air-cooled energy storage cabinet more advantageous in environmental adaptability and noise reduction. Not only can the temperature be flexibly adjusted according to actual needs to achieve the best heat dissipation effect, ensure the stable operation of the air-cooled energy storage cabinet, and increase the environmental adaptability of the air-cooled energy storage cabinet, but also the heat dissipation system can be more comprehensively considered in terms of noise control during design; the overall noise level can be reduced while ensuring the heat dissipation efficiency.

[0047] Embodiment 2

[0048] Optionally, the air-cooled energy storage cabinet further includes an uninterruptible power supply 43, a circuit breaker tripping drive 44, a switching power supply group, a fifth circuit breaker 64, a sixth circuit breaker 65, and a seventh circuit breaker 66. The outgoing end of the second circuit breaker 61 is electrically connected to the incoming end of the seventh circuit breaker 66. The outgoing end of the seventh circuit breaker 66 is electrically connected to the incoming end of the uninterruptible power supply 43. The outgoing end of the uninterruptible power supply 43 is electrically connected to the circuit breaker tripping drive 44 through the fifth circuit breaker 64. The outgoing end of the uninterruptible power supply 43 is electrically connected to the switching power supply group through the sixth circuit breaker 65. Optionally, the fifth circuit breaker 64, the sixth circuit breaker 65, and the seventh circuit breaker 66 are all AC miniature circuit breakers.

[0049] Among them, the uninterruptible power supply 43 needs to be continuously powered by a power supply 431.

[0050] Optionally, the output voltage of the first switching power supply 45 and the second switching power supply 46 is 24V.

[0051] Optionally, the switching power supply group includes the first switching power supply 45 and the second switching power supply 46. The first switching power supply 45 is connected to the high-voltage cabinet 451 and the display screen 452. The second switching power supply 46 is connected to the terminal block 461, the water immersion host 462 and the fire extinguishing system 463. Further, the first switching power supply 45 is also used to supply power to other electrical equipment 453.

[0052] Embodiment 3

[0053] Optionally, the fire extinguishing system 463 includes a smoke sensor, a temperature sensor, an aerosol device and a sound and light alarm group. The smoke sensor is used to detect the amount of smoke inside the air-cooled energy storage cabinet. The temperature sensor is used to detect the temperature value inside the air-cooled energy storage cabinet. The aerosol device is used to spray aerosol gas when the amount of smoke is greater than the preset amount of smoke or the temperature value is greater than the preset temperature. The sound and light alarm group is used to generate a sound and light alarm signal when the amount of smoke is greater than the preset amount of smoke or the temperature value is greater than the preset temperature.

[0054] The implementation principle of the air-cooled energy storage cabinet according to an embodiment of the present application is as follows: when the air-cooled energy storage cabinet detects that the temperature or smoke in the cabinet reaches the alarm value, the aerosol gas is sprayed, the sound and light alarm flashes and buzzes, and the alarm state is reported to the display and control display. This linkage system not only responds quickly to early fire detection, but also uses intelligent control technology to monitor the state of the energy storage cabinet in real time and automatically adjust the fire extinguishing measures according to the preset fire extinguishing strategy, ensuring that the fire is timely and effectively controlled, improving the overall safety of the energy storage cabinet, and placing the entire system at the top of the energy storage cabinet greatly reduces the maintenance cost of the product.

[0055] Embodiment 4

[0056] Optionally, the n single batteries are placed in the energy storage cabinet in a head-to-tail manner, and the energy storage cabinet is slidably installed in the air-cooled energy storage cabinet.

[0057] Optionally, the individual battery cells adopt a 1P24S cell pack design, containing 24 strings of 280Ah lithium iron phosphate cells and a BMU battery management unit 71. The overall air-cooled energy storage cabinet battery pack adopts a 2-row, 5-row "drawer-type" structure design, pushing 10 individual batteries into their corresponding sheet metal baffle positions. Power lines and communication lines connect the 10 battery packs in a serpentine pattern, with the two rows of 5-row cells at the beginning and the other row of 5-row cells at the end, connecting them in series to the battery system 3. Given that the nominal voltage of the individual battery is 3.2V, then: individual battery voltage × number of individual battery cells × number of individual batteries = total DC-side voltage; therefore, 3.2V × 24 × 10 = 768V; furthermore, total DC-side voltage × nominal cell capacity = total capacity; therefore, 768V × 280Ah = 215.04kWh. Therefore, the air-cooled energy storage cabinet provided in this application can achieve an energy storage capacity of 515kWh.

[0058] The implementation principle of an air-cooled energy storage cabinet in this application embodiment is as follows: This "drawer-like" structural design makes the battery system an independent modular unit. Each drawer (i.e., a single battery cell) can be installed, replaced, and maintained independently without disassembling the entire energy storage cabinet. This improves the system's integration and flexibility, not only making more effective use of the internal space of the energy storage cabinet and reducing unnecessary space waste, but also improving the overall space utilization rate. Furthermore, when a single battery cell fails, it can be quickly removed and replaced with a new single battery cell, just like replacing a drawer, shortening maintenance time and reducing maintenance costs.

[0059] Example 5

[0060] Battery system 3 also includes a monitoring system. The monitoring system is used to detect the basic parameters of the n individual cells. The monitoring system is also used to adjust the operating state of the n individual cells based on the basic parameters.

[0061] For example, please refer to Figure 3 The air-cooled energy storage cabinet also includes a battery management unit (BMU), a battery charge management unit (BCMU), an energy management unit (EMU), an energy management system (EMS), and a power conversion system (PCS).

[0062] The power conversion system 75 and the energy management unit 73 are connected via an RS485 communication interface.

[0063] The power conversion system 75 and the battery charge management unit 72 are connected through a CAN bus.

[0064] The energy management unit 73 and the battery charge management unit 72 are connected through a LAN2 pass interface.

[0065] The energy management unit 73 and the energy management system 74 communicate through a TCP / IP protocol.

[0066] The battery management units 71 communicate through a CAN bus, and the battery charge management unit 72 and the battery management units 71 also communicate through a CAN bus.

[0067] Further, the air-cooled energy storage cabinet further comprises a total switch 81, an emergency switch 82, a current sensor 83 and a protection resistor 84 connected in series between the power conversion system 75 and the battery management unit 71. The total switch 81 is used to control whether the battery system 3 is charged or not. The current sensor 83 is used to measure the current value entering the battery system 3. The protection resistor 84 plays a protective role to prevent the current entering the battery system 3 from being too large.

[0068] The implementation principle of the air-cooled energy storage cabinet according to the embodiment of the present application is as follows: the battery management unit 71 monitors the charging state of the single battery in real time. When the battery management unit 71 detects that the single battery works abnormally, the battery management unit 71 sends an abnormal signal to the battery charge management unit 72, and the battery charge management unit 72 disconnects the emergency switch 82 according to the abnormal signal to protect the charging safety of the single battery.

[0069] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Any feature disclosed in the specification (including the abstract and the drawings) can be replaced by other equivalent or similar features, unless specifically stated. That is, each feature is only an example of a series of equivalent or similar features, unless specifically stated.

Claims

1. An air-cooled energy storage cabinet, characterized in that, The wind-cooled energy storage cabinet comprises an energy storage converter (1), a DC high-voltage box (2), a battery system (3), a cooling system (4), a first circuit breaker (60) and a second circuit breaker (61); an input interface of the energy storage converter (1) is connected to a power grid system (5) through the first circuit breaker (60), and an output interface of the energy storage converter (1) is electrically connected to an input interface of the DC high-voltage box (2); an output interface of the DC high-voltage box (2) is electrically connected to an input interface of the battery system (3), and the battery system (3) is composed of n single batteries in series, wherein n is a positive integer greater than 2; a line-in end of the second circuit breaker (61) is electrically connected between the first circuit breaker (60) and the power grid system (5), and a line-out end of the second circuit breaker (61) is electrically connected to the cooling system (4), and the cooling system (4) is used for cooling the air-cooled energy storage cabinet.

2. The air-cooled energy storage cabinet of claim 1, wherein, The air-cooled energy storage cabinet further comprises a heat dissipation system, and the heat dissipation system comprises a heat dissipation fan (41) and an air conditioning device (42); the heat dissipation fan (41) is used for sending external air to the air conditioning device (42) for heat exchange and making air in the air-cooled energy storage cabinet circulate and flow.

3. The air-cooled energy storage cabinet of claim 2, wherein, An input end of the air conditioning device (42) is electrically connected to a line-out end of the second circuit breaker (61) through a third circuit breaker (62).

4. The air-cooled energy storage cabinet of claim 2, wherein, An input end of the heat dissipation fan (41) is electrically connected to the line-out end of the second circuit breaker (61) through a fourth circuit breaker (63).

5. The air-cooled energy storage cabinet of claim 1, wherein, The air-cooled energy storage cabinet further comprises an uninterruptible power supply (43), a circuit breaker tripping drive (44), a switching power supply group, a fifth circuit breaker (64), a sixth circuit breaker (65) and a seventh circuit breaker (66); a line-out end of the second circuit breaker (61) is electrically connected to a line-in end of the seventh circuit breaker (66); a line-out end of the seventh circuit breaker (66) is electrically connected to a line-in end of the uninterruptible power supply (43); a line-out end of the uninterruptible power supply (43) is electrically connected to the circuit breaker tripping drive (44) through the fifth circuit breaker (64); and a line-out end of the uninterruptible power supply (43) is electrically connected to the switching power supply group through the sixth circuit breaker (65).

6. The air-cooled energy storage cabinet of claim 5, wherein, The switching power supply group comprises a first switching power supply (45) and a second switching power supply (46); the first switching power supply (45) is connected to a high-voltage box (451) and a display screen (452); and the second switching power supply (46) is connected to a terminal strip (461), a water immersion host (462) and a fire extinguishing system (463).

7. The air-cooled energy cabinet of claim 1, wherein, The air-cooled energy storage cabinet further comprises a fire-fighting system (463), the fire-fighting system (463) comprising a smoke sensor, a temperature sensor, an aerosol device and a sound-light alarm group; the smoke sensor is used to detect the smoke amount inside the air-cooled energy storage cabinet; the temperature sensor is used to detect the temperature value inside the air-cooled energy storage cabinet; the aerosol device is used to spray aerosol gas in the case that the smoke amount is greater than a preset smoke amount or the temperature value is greater than a preset temperature; the sound-light alarm group is used to generate a sound-light alarm signal in the case that the smoke amount is greater than the preset smoke amount or the temperature value is greater than the preset temperature.

8. The air-cooled energy storage cabinet of claim 1, wherein, The air-cooled energy storage cabinet further comprises an eighth circuit breaker (67) and an alternating current surge protector; the incoming line end of the eighth circuit breaker (67) is electrically connected between the eighth circuit breaker (67) and the power grid system (5), and the outgoing line end of the eighth circuit breaker (67) is electrically connected with the alternating current surge protector.

9. The air-cooled energy cabinet of claim 1, wherein, The n single batteries are placed in series at the ends in the energy storage cabinet, and the energy storage cabinet is slidably installed in the air-cooled energy storage cabinet.

10. The air-cooled energy storage cabinet of claim 1, wherein, The battery system (3) further comprises a monitoring system; the monitoring system is used to detect the basic parameters of the n single batteries; the monitoring system is further used to adjust the working state of the n single batteries according to the basic parameters.

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