Single cabinet type liquid cooling energy storage cabinet

Abstract

The single-cabinet type liquid cooling energy storage cabinet comprises an energy storage converter, a fire-fighting host, a liquid cooling machine and a high-voltage control box, wherein the lower part and the upper part in a cabinet body are divided into an electrical placement area and a battery pack placement area; the energy storage converter is fixedly and horizontally arranged at the lower part in the cabinet body and in the electrical placement area; a plurality of horizontally placed liquid-cooled battery packs are sequentially fixed at the upper part in the cabinet body and in the battery pack placement area from bottom to top, a liquid outlet of the liquid-cooled machine is connected with a liquid inlet pipeline of each liquid-cooled battery pack, a liquid return port of the liquid-cooled machine is connected with a liquid return port pipeline of each liquid-cooled battery pack, a cabinet-level composite detector is fixed in the cabinet body, and a liquid outlet of the liquid-cooled machine is connected with a liquid return port pipeline of each liquid-cooled battery pack. A pack-level composite detector is fixed in each liquid-cooled battery pack, a fire-fighting host pipeline is connected with pack-level electromagnetic valves and pack-level fire-fighting sprayers which are in one-to-one correspondence with the liquid-cooled battery packs, each pack-level fire-fighting sprayer is arranged in the corresponding liquid-cooled battery pack, and the fire-fighting host pipeline is connected with cabinet-level electromagnetic valves and cabinet-level fire-fighting sprayers.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage cabinets, and in particular to a single-cabinet type liquid-cooled energy storage cabinet. Background Art

[0002] At present, there are two types of energy storage cabinets commonly used in the market: one is air-cooled and the other is liquid-cooled. For energy storage cabinets using air cooling, the refrigerant is the air around the battery, and heat is dissipated through natural or forced convection, but its cooling effect is weaker than liquid cooling. Moreover, most of the current liquid-cooled energy storage cabinets adopt a left-right structure, and the battery pack and other electrical equipment (such as energy storage inverter PCS, etc.) are placed separately on the left and right sides. This left-right structural design is large in size and occupies a large area. Furthermore, the existing liquid-cooled energy storage cabinets do not have technology for zoning and regulating the cabinet body. Based on this, the present invention designs a single-cabinet liquid-cooled energy storage cabinet in which the battery pack and other electrical equipment are arranged in a cabinet room and zoning is regulated. Summary of the invention

[0003] In view of the problems and shortcomings of the prior art, the present invention provides a single-cabinet liquid-cooled energy storage cabinet.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a single-cabinet liquid-cooled energy storage cabinet, which is characterized in that it includes a cabinet body, wherein the lower and upper parts of the cabinet body are respectively divided into an electrical placement area and a battery pack placement area, wherein a horizontally placed energy storage converter, a fire host containing a gas fire extinguishing agent, a liquid cooler containing a coolant, and a high-voltage control box are fixed in the lower part of the cabinet body and placed in the electrical placement area, wherein a plurality of horizontally placed liquid-cooled battery packs are fixed in sequence from bottom to top in the upper part of the cabinet body and placed in the battery pack placement area, wherein the liquid outlet of the liquid cooler is connected to the liquid inlet pipeline of each liquid-cooled battery pack, the liquid return port of the liquid cooler is connected to the liquid return port pipeline of each liquid-cooled battery pack, and the cabinet-level Composite detectors, each of the liquid-cooled battery packs is fixed with a pack-level composite detector, the fire host pipeline is connected with a pack-level solenoid valve and a pack-level fire sprinkler corresponding to the liquid-cooled battery pack, each pack-level fire sprinkler is placed in the corresponding liquid-cooled battery pack, the fire host is also connected with a cabinet-level solenoid valve and a cabinet-level fire sprinkler through a pipeline, the energy storage inverter is electrically connected to the liquid-cooled battery pack, the cabinet-level composite detector, the cabinet-level solenoid valve, the pack-level composite detector and the pack-level solenoid valve are all electrically connected to the fire host, and the liquid-cooled battery pack, the energy storage inverter, the fire host and the liquid cooler are all electrically connected to the high-voltage control box;

[0006] The temperature detector in each of the liquid-cooled battery packs is used to detect the temperature and transmit it to the high-voltage control box. The high-voltage control box is used to control the liquid cooler to start when it is analyzed that the temperature detected by any temperature detector reaches a first set temperature value. The coolant in the liquid cooler enters the cooling channel of each liquid-cooled battery pack to cool the liquid-cooled battery pack. The cooled liquid in the cooling channel flows back to the liquid cooler to realize circulation.

[0007] The cabinet-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the cabinet and transmit them to the fire host. The fire host is used to analyze whether there is a fire in the cabinet based on the signals detected by the cabinet-level composite detector. If yes, the cabinet-level solenoid valve is controlled to open, and the gas fire extinguishing agent in the fire host enters the cabinet-level fire sprinkler through the cabinet-level solenoid valve, and is sprayed into the cabinet by the cabinet-level fire sprinkler to extinguish the fire in the cabinet, and at the same time transmits the signal of fire in the cabinet to the high-voltage control box;

[0008] The pack-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the liquid-cooled battery pack to which it belongs and transmit them to the fire-fighting host computer. The fire-fighting host computer is used to analyze whether there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs based on the signal detected by a pack-level composite detector. If yes, the pack-level solenoid valve corresponding to the pack-level composite detector is controlled to open, and the gas fire extinguishing agent in the fire-fighting host computer enters the corresponding pack-level fire sprinkler through the corresponding pack-level solenoid valve, and is sprayed into the liquid-cooled battery pack to which it belongs by the corresponding pack-level fire sprinkler to extinguish the fire in the liquid-cooled battery pack. At the same time, the signal indicating that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs is transmitted to the high-voltage control box.

[0009] The positive and progressive effects of the present invention are:

[0010] The liquid-cooled energy storage cabinet of the present invention is designed as a single cabinet, and the liquid-cooled battery pack and other electrical equipment are arranged vertically in the single cabinet. Specifically, the lower and upper parts of the single cabinet are divided into an electrical placement area and a battery pack placement area, respectively. The electrical placement area in the lower part of the single cabinet is provided with a horizontally placed energy storage inverter, a fire host, a liquid cooler and a high-voltage control box, and the battery pack placement area in the upper part of the single cabinet is provided with a plurality of horizontally placed liquid-cooled battery packs in sequence from bottom to top. This vertical layout makes the liquid-cooled energy storage cabinet smaller in size and occupies a smaller area, which is convenient for transportation.

[0011] In the present invention, when the temperature in any liquid-cooled battery pack is too high, a liquid cooler is used to cool down all the battery packs.

[0012] In the present invention, a cabinet-level composite detector, a cabinet-level solenoid valve and a cabinet-level fire sprinkler are provided to analyze whether there is a fire in the cabinet, and when there is a fire in the cabinet, the gas fire extinguishing agent in the fire host is used to extinguish the fire in the cabinet; a pack-level composite detector, a pack-level solenoid valve and a pack-level fire sprinkler are provided for each liquid-cooled battery pack to analyze whether there is a fire in each liquid-cooled battery pack, and when there is a fire in a certain liquid-cooled battery pack, the gas fire extinguishing agent in the fire host is used to extinguish the fire in the liquid-cooled battery pack, thereby realizing zoning control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional view (front angle) of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention.

[0014] Figure 2 This is a three-dimensional view (back side view) of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention.

[0015] Figure 3 This is a diagram of the internal structure of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention (front angle).

[0016] Figure 4 for Figure 3 A partial enlargement of the lower part.

[0017] Figure 5 This is a diagram of the internal structure of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention (from the back side).

[0018] Figure 6 for Figure 5 A partial enlargement of the lower part.

[0019] Figure 7 This is a diagram of the internal structure of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention (front angle).

[0020] Figure 8 for Figure 7 A partial enlargement of the upper part.

[0021] Fig. 9 This is a diagram of the internal structure of a liquid-cooled energy storage integrated cabinet according to a preferred embodiment of the present invention (front angle).

[0022] Fig.10 for Fig. 9 A detailed enlargement of the top.

[0023] Fig.11 for Fig. 9 Magnified view of the upper right part. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] like Figure 1-11 As shown, this embodiment provides a single-cabinet liquid-cooled energy storage cabinet, which includes a cabinet body 1, wherein the lower and upper parts of the cabinet body 1 are respectively divided into an electrical placement area 2 and a battery pack placement area 3, constituting a single cabinet.

[0026] A left vertical frame 4 is fixed on the left side of the cabinet 1, and a right vertical frame 5 is fixed on the right side. A horizontally placed energy storage converter 6, a fire main engine 7 containing a gas fire extinguishing agent, a liquid cooler 8 containing a coolant, and a high-voltage control box 9 are fixed in the lower part between the left vertical frame 4 and the right vertical frame 5 and placed in the electrical installation area 2. Specifically, a first longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the lower part of the left vertical frame 4, and a second longitudinal support rod 51 corresponding to the first longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the lower part of the right vertical frame 5. The horizontally placed energy storage converter 6 and the fire main engine 7 are placed and supported at the inner bottom of the cabinet 1 and below the first longitudinal support rod and the second longitudinal support rod 51 at the bottom, the horizontally placed liquid cooler 8 is placed and supported between the first longitudinal support rod and the second longitudinal support rod 51 at the bottom, and the horizontally placed high-voltage control box 9 is placed and supported between the first longitudinal support rod and the second longitudinal support rod 51 at the top. Among them, each of the first longitudinal support rod and the second longitudinal support rod 51 is an L-shaped longitudinal support rod, and the height of the upper and lower adjacent first longitudinal support rods and the height of the upper and lower adjacent second longitudinal support rods 51 are set to allow the liquid cooler to be placed horizontally. The height between the inner bottom of the cabinet 1 and the lowest first longitudinal support rod is set to allow the energy storage inverter 6 to be placed horizontally. The size of the fire host 7 is smaller than that of the energy storage inverter 6, so the fire host 7 can be placed horizontally.

[0027] A plurality of horizontally placed liquid-cooled battery packs 10 are fixed in sequence from bottom to top in the upper part between the left vertical frame 4 and the right vertical frame 5 and placed in the battery pack placement area 3. Specifically, a third longitudinal support rod 42 is fixed at intervals along the vertical direction between the front and rear sides of the upper part of the left vertical frame 4, and a fourth longitudinal support rod 52 corresponding to the third longitudinal support rod 42 is fixed at intervals along the vertical direction between the front and rear sides of the upper part of the right vertical frame 5, and a horizontally placed liquid-cooled battery pack 10 is placed and supported on each third longitudinal support rod 42 and the corresponding fourth longitudinal support rod 52. Among them, each third longitudinal support rod 42 and the fourth longitudinal support rod 52 are L-shaped longitudinal support rods, and the height of the upper and lower adjacent third longitudinal support rods 42 and the height of the upper and lower adjacent fourth longitudinal support rods 52 are set to be exactly one liquid-cooled battery pack 10 placed horizontally, and the height between the adjacent first longitudinal support rods and the third longitudinal support rods 42 is set to be exactly one high-voltage control box 9 placed horizontally.

[0028] The cabinet body 1 includes a six-sided frame 11 which is spliced ​​together by a left rectangular frame, a right rectangular frame, an upper rectangular frame, a lower rectangular frame, a front rectangular frame 111 and a rear rectangular frame. A base 12 is fixed to the bottom of the six-sided frame 11, and an outer shell 13 is fixed to the left, right and top of the six-sided frame 11. A front cabinet door 14 and a rear cabinet door 15 are fixed to the front and back of the six-sided frame 11 respectively. The six-sided frame 11, the base 12, the outer shell 13, the front cabinet door 14 and the rear cabinet door 15 constitute the cabinet body 1 as a whole.

[0029] A vertical main liquid outlet pipe 20 is fixed between the left rear side of the front rectangular frame 111 and the front side of the left vertical frame 4, and a vertical main liquid return pipe 21 is fixed between the right rear side of the front rectangular frame 111 and the front side of the right vertical frame 5. The main liquid outlet pipe 20 is connected to the liquid outlet of the liquid cooler 8, and the main liquid return pipe 21 is connected to the liquid return port of the liquid cooler 8. The main liquid outlet pipe 20 is connected to a liquid outlet branch pipe 202 through a three-way pipe 201 near each liquid-cooled battery pack 10, and each liquid outlet branch pipe 202 is connected to the liquid inlet of the corresponding liquid-cooled battery pack 10. The main liquid return pipe 21 is connected to a liquid return branch pipe 212 through a three-way pipe 211 near each liquid-cooled battery pack 10, and each liquid return branch pipe 212 is connected to the liquid return port of the corresponding liquid-cooled battery pack 10.

[0030] A vertical main air pipe 22 is fixed between the right rear side of the front rectangular frame 111 and the front side of the right vertical frame 5. The main air pipe 22 is connected to the air outlet of the fire host 7. The main air pipe 22 is connected to an air outlet branch pipe 222 through a three-way pipe 221 near each liquid-cooled battery pack 10. A pack-level solenoid valve 223 is provided on each air outlet branch pipe 222. The outlet of each pack-level solenoid valve 223 is connected to a pack-level fire sprinkler. Each pack-level fire sprinkler is located in the corresponding liquid-cooled battery pack 10. A cabinet-level solenoid valve 224 is provided on the top of the main air pipe 22. The outlet of the cabinet-level solenoid valve 224 is connected to a cabinet-level fire sprinkler 225. A cabinet-level composite detector 23 is fixed to the upper surface of the topmost liquid-cooled battery pack 10 in the cabinet 1, and a pack-level composite detector is fixed in each liquid-cooled battery pack 10.

[0031] The rear cabinet door 15 is embedded with a wind shield 24 and an audible and visual alarm 25, a fan 26 is installed on the air duct between the wind shield 24 and the electrical installation area, and a plurality of heat dissipation holes are provided at the bottom of the wind shield 24. A ventilation shutter 27 is provided on the front cabinet door 14 corresponding to the electrical installation area 2, and a touch screen 28 and a plurality of indicator lights 29 are embedded on the front cabinet door 14.

[0032] In addition, a lifting ring 30 is fixed around the top of the cabinet body 1, and the setting of the lifting ring 30 is convenient for lifting the liquid cooling energy storage integrated cabinet. The front cabinet door 14 is provided with a front door lock 31, and the rear cabinet door 15 is provided with a rear door lock 32.

[0033] In this embodiment, the electrical connection relationship is: the energy storage inverter 6 is electrically connected to the liquid-cooled battery pack 10, the cabinet-level composite detector 23, the cabinet-level solenoid valve 224, the pack-level composite detector and the pack-level solenoid valve 223 are all electrically connected to the fire host 7, the liquid-cooled battery pack 10, the energy storage inverter 6, the fire host 7 and the liquid cooler 8 are all electrically connected to the high-voltage control box 9, the sound and light alarm 25 and the fan 26 are all electrically connected to the high-voltage control box 9, and the touch screen 28 and multiple indicator lights 29 are all electrically connected to the high-voltage control box 9.

[0034] In this embodiment, the energy storage inverter 6, the fire host 7, the liquid cooler 8, the high-voltage control box 9, the liquid-cooled battery pack 10, the cabinet-level composite detector 23, the cabinet-level solenoid valve 224, the pack-level composite detector and the pack-level solenoid valve 223 are all existing commercially available products.

[0035] In this embodiment, the temperature detector in each liquid-cooled battery pack 10 is used to detect the temperature and transmit it to the high-voltage control box 9. The high-voltage control box 9 is used to control the start of the liquid cooler 8 when it is analyzed that the temperature detected by any temperature detector reaches the first set temperature value. The coolant in the liquid cooler 8 enters the cooling channel of the corresponding liquid-cooled battery pack through the main liquid outlet pipe 20 and each liquid outlet branch pipe 202 to cool the liquid-cooled battery pack 10. The cooled liquid in the cooling channel of each liquid-cooled battery pack 10 flows into the liquid cooler 8 through each return liquid branch pipe 212 and the main return liquid pipe 21 to achieve circulation.

[0036] In this embodiment, the IGBT in the energy storage inverter 6 senses the temperature and transmits it to the high-voltage control box 9. The high-voltage control box 9 is used to control the fan 26 to turn on when the temperature reaches the second set temperature based on the temperature sensed by the IGBT, so as to dissipate the heat in the cabinet 1 through the heat dissipation holes at the bottom of the wind hood 24.

[0037] In this embodiment, the cabinet-level composite detector 23 is used to detect smoke signals, temperature signals and combustible gas signals in the cabinet 1 and transmit them to the fire host 7. The fire host 7 is used to analyze whether there is a fire in the cabinet 1 based on the signals detected by the cabinet-level composite detector 23. When the fire is detected, the cabinet-level solenoid valve 224 is controlled to open, and the gas fire extinguishing agent in the fire host 7 enters the cabinet-level fire sprinkler 225 through the main gas pipe 22 and the cabinet-level solenoid valve 224, and is sprayed into the cabinet 1 by the cabinet-level fire sprinkler 225 to extinguish the fire in the cabinet 1. At the same time, the signal that there is a fire in the cabinet is transmitted to the high-voltage control box 9. After receiving the signal that there is a fire in the cabinet, the high-voltage control box 9 controls the sound and light alarm 25 to issue an alarm message that there is a fire in the cabinet.

[0038] In this embodiment, the pack-level composite detector is used to detect the smoke signal, temperature signal and combustible gas signal in the liquid-cooled battery pack 10 to which it belongs and transmit them to the fire host 7. The fire host 7 is used to analyze whether there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs based on the signal detected by a certain pack-level composite detector. When the fire is yes, the pack-level solenoid valve 223 corresponding to the pack-level composite detector is controlled to open. The gas fire extinguishing agent in the fire host 7 enters the corresponding pack-level fire sprinkler through the main gas pipe 22 and the outlet branch pipe 222 corresponding to the pack-level composite detector, and is sprayed into the liquid-cooled battery pack 10 to which it belongs by the corresponding pack-level fire sprinkler, so as to extinguish the fire in the liquid-cooled battery pack 10. At the same time, the signal that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs is transmitted to the high-voltage control box 9. After receiving the signal that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs, the high-voltage control box 9 controls the sound and light alarm 25 to send out an alarm message that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs.

[0039] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A single-cabinet liquid-cooled energy storage cabinet, characterized in that: It includes a cabinet, the lower and upper parts of which are respectively divided into an electrical installation area and a battery pack installation area. A horizontally placed energy storage converter, a fire main engine containing a gas fire extinguishing agent, a liquid cooler containing a coolant, and a high-voltage control box are fixed in the lower part of the cabinet and placed in the electrical installation area. A plurality of horizontally placed liquid-cooled battery packs are fixed in sequence from bottom to top in the upper part of the cabinet and placed in the battery pack installation area. The liquid outlet of the liquid cooler is connected to the liquid inlet pipeline of each liquid-cooled battery pack, and the liquid return port of the liquid cooler is connected to the liquid return port pipeline of each liquid-cooled battery pack. A cabinet-level composite detector is fixed in the cabinet, and each of the A pack-level composite detector is fixed in each liquid-cooled battery pack. The fire host pipeline is connected with a pack-level solenoid valve and a pack-level fire sprinkler corresponding to the liquid-cooled battery pack. Each pack-level fire sprinkler is placed in the corresponding liquid-cooled battery pack. The fire host is also connected with a cabinet-level solenoid valve and a cabinet-level fire sprinkler through a pipeline. The energy storage converter is electrically connected to the liquid-cooled battery pack. The cabinet-level composite detector, cabinet-level solenoid valve, pack-level composite detector and pack-level solenoid valve are all electrically connected to the fire host. The liquid-cooled battery pack, energy storage converter, fire host and liquid cooler are all electrically connected to the high-voltage control box. The temperature detector in each of the liquid-cooled battery packs is used to detect the temperature and transmit it to the high-voltage control box. The high-voltage control box is used to control the liquid cooler to start when it is analyzed that the temperature detected by any temperature detector reaches a first set temperature value. The coolant in the liquid cooler enters the cooling channel of each liquid-cooled battery pack to cool the liquid-cooled battery pack. The cooled liquid in the cooling channel flows back to the liquid cooler to realize circulation. The cabinet-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the cabinet and transmit them to the fire host. The fire host is used to analyze whether there is a fire in the cabinet based on the signals detected by the cabinet-level composite detector. If yes, the cabinet-level solenoid valve is controlled to open, and the gas fire extinguishing agent in the fire host enters the cabinet-level fire sprinkler through the cabinet-level solenoid valve, and is sprayed into the cabinet by the cabinet-level fire sprinkler to extinguish the fire in the cabinet, and at the same time transmits the signal of fire in the cabinet to the high-voltage control box; The pack-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the liquid-cooled battery pack to which it belongs and transmit them to the fire-fighting host computer. The fire-fighting host computer is used to analyze whether there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs based on the signal detected by a pack-level composite detector. If yes, the pack-level solenoid valve corresponding to the pack-level composite detector is controlled to open, and the gas fire extinguishing agent in the fire-fighting host computer enters the corresponding pack-level fire sprinkler through the corresponding pack-level solenoid valve, and is sprayed into the liquid-cooled battery pack to which it belongs by the corresponding pack-level fire sprinkler to extinguish the fire in the liquid-cooled battery pack. At the same time, the signal indicating that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs is transmitted to the high-voltage control box.

2. The single-cabinet liquid-cooled energy storage cabinet according to claim 1, characterized in that: A left vertical frame is fixed on the left side of the cabinet, and a right vertical frame is fixed on the right side. A horizontally placed energy storage inverter, a fire host, a liquid cooler and a high-voltage control box are fixed in the lower part between the left vertical frame and the right vertical frame and placed in the electrical placement area. A plurality of horizontally placed liquid-cooled battery packs are fixed in sequence from bottom to top in the upper part between the left vertical frame and the right vertical frame and placed in the battery pack placement area.

3. The single-cabinet liquid-cooled energy storage cabinet according to claim 2, characterized in that: A first longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the lower part of the left vertical frame, and a second longitudinal support rod corresponding to the first longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the lower part of the right vertical frame. A horizontally placed energy storage inverter and a fire fighting main unit are placed and supported at the inner bottom of the cabinet and below the first and second longitudinal support rods at the bottom, a horizontally placed liquid cooler is placed and supported between the first and second longitudinal support rods at the bottom, and a horizontally placed high-voltage control box is placed and supported between the first and second longitudinal support rods at the top.

4. The single-cabinet liquid-cooled energy storage cabinet according to claim 3, characterized in that: Each of the first longitudinal support rod and the second longitudinal support rod is an L-shaped longitudinal support rod, and the height of the upper and lower adjacent first longitudinal support rods and the height of the upper and lower adjacent second longitudinal support rods are set to just allow the liquid cooler to be placed horizontally, and the height between the inner bottom of the cabinet and the lowest first longitudinal support rod is set to just allow the energy storage inverter to be placed horizontally.

5. The single-cabinet liquid-cooled energy storage cabinet according to claim 4, characterized in that: A third longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the upper part of the left vertical frame, and a fourth longitudinal support rod corresponding to the third longitudinal support rod is fixed at intervals along the vertical direction between the front and rear sides of the upper part of the right vertical frame, and a horizontally placed liquid-cooled battery pack is placed and supported on each of the third longitudinal support rods and the corresponding fourth longitudinal support rod.

6. The single-cabinet liquid-cooled energy storage cabinet according to claim 5, characterized in that: Each of the third longitudinal support rods and the fourth longitudinal support rod is an L-shaped longitudinal support rod. The height of the upper and lower adjacent third longitudinal support rods and the height of the upper and lower adjacent fourth longitudinal support rods are set to allow a liquid-cooled battery pack to be placed horizontally, and the height between the adjacent first longitudinal support rods and third longitudinal support rods is set to allow a high-voltage control box to be placed horizontally.

7. The single-cabinet liquid-cooled energy storage cabinet according to claim 2, characterized in that: The cabinet body includes a six-sided frame formed by splicing a left rectangular frame, a right rectangular frame, an upper rectangular frame, a lower rectangular frame, a front rectangular frame and a rear rectangular frame. A base is fixed to the bottom of the six-sided frame, and an outer shell is fixed to the left, right and top of the six-sided frame. A front cabinet door and a rear cabinet door are respectively fixed to the front and back of the six-sided frame.

8. The single-cabinet liquid-cooled energy storage cabinet according to claim 7, characterized in that: A vertical main liquid outlet pipe is fixed between the left rear side of the front rectangular frame and the front side of the left vertical frame, and a vertical main liquid return pipe is fixed between the right rear side of the front rectangular frame and the front side of the right vertical frame. The main liquid outlet pipe is connected and communicated with the liquid outlet of the liquid cooler, and the main liquid return pipe is connected and communicated with the liquid return port of the liquid cooler. A liquid outlet branch pipe is connected to the main liquid outlet pipe near each liquid-cooled battery pack through a three-way pipe, and each of the liquid outlet branch pipes is connected and communicated with the liquid inlet of the corresponding liquid-cooled battery pack. A liquid return branch pipe is connected to the main liquid return pipe near each liquid-cooled battery pack through a three-way pipe, and each of the liquid return branch pipes is connected and communicated with the liquid return port of the corresponding liquid-cooled battery pack. The temperature detector in each of the liquid-cooled battery packs is used to detect the temperature and transmit it to the high-voltage control box. The high-voltage control box is used to control the start of the liquid cooler when it is analyzed that the temperature detected by any temperature detector reaches a first set temperature value. The coolant in the liquid cooler enters the cooling channel of the corresponding liquid-cooled battery pack through the main liquid outlet pipe and each liquid outlet branch pipe to cool the liquid-cooled battery pack. The cooled liquid in the cooling channel flows into the liquid cooler through each return liquid branch pipe and the main return liquid pipe to realize circulation.

9. The single-cabinet liquid-cooled energy storage cabinet according to claim 7, characterized in that: A vertical main air pipe is fixed between the right rear side of the front rectangular frame and the front side of the right vertical frame, and the main air pipe is connected to the air outlet of the fire host. The main air pipe is connected to an air outlet branch pipe through a three-way pipe near each liquid-cooled battery pack. A pack-level solenoid valve is provided on each of the air outlet branches, and the outlet of each pack-level solenoid valve is connected to a pack-level fire sprinkler. A cabinet-level solenoid valve is provided on the top of the main air pipe, and the outlet of the cabinet-level solenoid valve is connected to a cabinet-level fire sprinkler. The cabinet-level composite detector is fixed on the upper surface of the uppermost liquid-cooled battery pack. The cabinet-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the cabinet and transmit them to the fire host. The fire host is used to analyze whether there is a fire in the cabinet based on the signals detected by the cabinet-level composite detector. If yes, the cabinet-level solenoid valve is controlled to open, and the gas fire extinguishing agent in the fire host enters the cabinet-level fire sprinkler through the main gas pipe and the cabinet-level solenoid valve, and is sprayed into the cabinet by the cabinet-level fire sprinkler to extinguish the fire in the cabinet, and at the same time transmits the signal of fire in the cabinet to the high-voltage control box; The pack-level composite detector is used to detect smoke signals, temperature signals and combustible gas signals in the liquid-cooled battery pack to which it belongs and transmit them to the fire-fighting host. The fire-fighting host is used to analyze whether there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs based on the signal detected by a pack-level composite detector. If yes, the pack-level solenoid valve corresponding to the pack-level composite detector is controlled to open, and the gas fire extinguishing agent in the fire-fighting host enters the corresponding pack-level fire sprinkler through the main gas pipe and the outlet branch pipe corresponding to the pack-level composite detector, and is sprayed into the liquid-cooled battery pack by the corresponding pack-level fire sprinkler to extinguish the fire in the liquid-cooled battery pack. At the same time, the signal that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs is transmitted to the high-voltage control box.

10. The single-cabinet liquid-cooled energy storage cabinet according to claim 9, characterized in that: The rear cabinet door is embedded with an air hood and an audible and visual alarm, a fan is installed on the air duct between the air hood and the electrical installation area, a plurality of heat dissipation holes are opened at the bottom of the air hood, and the audible and visual alarm and the fan are electrically connected to the high-voltage control box; The IGBT in the energy storage converter senses the temperature and transmits it to the high-voltage control box, and the high-voltage control box is used to control the fan to turn on when the temperature reaches the second set temperature based on the temperature sensed by the IGBT, so as to dissipate the heat in the cabinet through the heat dissipation holes at the bottom of the wind cover; The high-voltage control box is used to control the sound and light alarm to issue an alarm message that there is a fire in the cabinet after receiving a signal that there is a fire in the cabinet, and to control the sound and light alarm to issue an alarm message that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs after receiving a signal that there is a fire in the liquid-cooled battery pack to which the pack-level composite detector belongs.

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