A partitioned isolated flame-retardant energy storage box

Abstract

The present invention discloses a partitioned isolated flame-retardant energy storage box, which belongs to the technical field of battery energy storage system. A partitioned isolated flame-retardant energy storage box includes a box body and energy storage battery units, a master control module and a fire protection module which are detachably installed inside the box body, respectively. The master control module is electrically connected to the energy storage battery units and the fire protection module respectively; the energy storage battery units include an energy storage box shell, a cooling module, a plurality of partitions and a plurality of energy storage battery clusters, the energy storage battery clusters are arranged in an array inside the energy storage box shell, and adjacent energy storage battery clusters are partitioned, isolated and supported by partitions; the energy storage battery cluster includes a plurality of electrically connected energy storage batteries, and adjacent energy storage batteries are separated by cooling modules; smoke sensors are detachably installed on the top of the energy storage battery clusters, and are connected to the master control module signals, and are used to monitor the smoke signals of the burning energy storage battery clusters and send the signals to the master control module, so as to achieve the purpose of detecting the fire of the energy storage battery units.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery energy storage systems, and more specifically, relates to a partitioned isolated flame-retardant energy storage box. Background Art

[0002] The energy storage box is a grid-side outdoor smart substation device based on the concept of "standard power distribution" and is also a new energy storage device; it is mainly composed of chargers, inverters, batteries, isolation transformers, switches and other components, and can convert DC power into AC power. Energy storage boxes are widely used in various scenarios, such as supporting energy storage in wind farms, photovoltaic power stations, thermal power plants, and large electricity users such as hospitals, hotels, and data centers. It is an important application carrier of energy storage technology. The energy storage box contains mostly lithium-ion batteries or sodium-ion batteries. Both will cause the temperature to rise after long-term operation, affecting the operating efficiency. Excessive temperature may even cause the battery to spontaneously combust, causing safety problems.

[0003] Existing energy storage boxes use air cooling, liquid cooling, and phase change material cooling to cool down batteries. Air cooling has low cost, but has limited cooling effect, and cannot promptly discharge the heat emitted by the arrayed batteries. Phase change material cooling has good cooling effect, but the operating technology is difficult and the cost is high. Liquid cooling has good cooling effect and is low in cost. Taking a CTP battery cell large-surface liquid-cooled energy storage box (CN202410093387.3) disclosed in a Chinese invention patent document as an example, the invention sets the cooling box as a parallel cooling circuit to make the cooling effect more uniform. However, the cooling effect of the cooling box of this scheme will still weaken as the coolant flows, resulting in uneven cooling effect. At the same time, because the partitions between adjacent batteries of this scheme cannot prevent the faulty battery from spreading to adjacent batteries after combustion, it is difficult to take safety measures to extinguish the battery after combustion occurs.

[0004] Therefore, we need an energy storage box with good cooling uniformity and good flame retardant effect. Summary of the invention

[0005] The purpose of the present invention is to provide a partitioned and isolated flame-retardant energy storage box, which is easy to disassemble and assemble, and can cool down both sides of the energy storage battery unit at the same time through the design of the shunt pipeline to achieve better temperature uniformity. At the same time, the safety of the energy storage battery is ensured by the flame-retardant partition and the fire protection module.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A partitioned isolated flame-retardant energy storage electric box of the present invention comprises an electric box body and an energy storage battery unit, a master control module and a fire protection module which are detachably installed inside the electric box body, and the master control module is electrically connected to the energy storage battery unit and the fire protection module respectively.

[0008] The energy storage battery unit includes an energy storage box shell, a cooling module, a plurality of partitions and a plurality of energy storage battery clusters. The energy storage battery clusters are arranged in an array inside the energy storage box shell, and adjacent energy storage battery clusters are partitioned, isolated and supported by partitions; the energy storage battery cluster includes a plurality of electrically connected energy storage batteries, and adjacent energy storage batteries are separated by cooling modules.

[0009] The fire fighting module includes a fire fighting assembly and several smoke sensors. The fire fighting assembly is electrically connected to the master control module and is used to receive fire fighting instructions from the master control module. The smoke sensors are detachably installed on the top of the energy storage battery cluster and are signal-connected to the master control module to monitor the smoke signals of the burning energy storage battery cluster and send the signals to the master control module.

[0010] The cooling module includes a plurality of cooling boxes, which are sandwiched between two adjacent energy storage batteries and are used to cool the surfaces of the energy storage batteries.

[0011] As a further improvement of the present invention, the cooling module also includes a liquid inlet, a liquid outlet, a pair of shunt pipes and a plurality of baffles, the shunt pipes are respectively arranged in front and rear of the energy storage battery cluster, the liquid inlet and the liquid outlet are respectively connected to the front and rear shunt pipes; the shunt pipe includes a main pipe and a plurality of branch pipes, and the branch pipes are connected to the cooling box; the baffles are closely attached to the upper and lower sides of the energy storage battery, and the cooling box is located between the baffles closely attached to adjacent energy storage batteries.

[0012] As a further improvement of the present invention, adjacent branch pipes of the shunt pipeline are arranged in opposite directions, and the branch pipes are respectively directed to the two sides of the energy storage battery unit; the cooling box is provided with a diagonally distributed water inlet end and a water outlet end, and the water inlet end and the water outlet end are respectively connected to the branch pipes of the shunt pipeline, so that the cooling boxes on both sides of the energy storage battery can flow coolant from two directions to cool the energy storage battery, so that the cooling effect of various parts of the energy storage battery is consistent, and better cooling balance is achieved.

[0013] As a further improvement of the present invention, the cooling box is made of a flexible material, which can reduce its volume after the energy storage battery and the baffle are expanded by heat and compressed, so as to increase the flow rate of the fluid inside the cooling box, thereby improving the cooling effect.

[0014] As a further improvement of the present invention, a plurality of evenly arranged grooves are provided on the surface of one side of the baffle plate close to the energy storage battery, so as to increase the contact area between the energy storage battery and the baffle plate, which is beneficial to the heat transfer; at the same time, the grooves can also reduce or destroy the air layer between the contact surface of the energy storage battery and the baffle plate, so as to further improve the heat transfer efficiency.

[0015] As a further improvement of the present invention, the fire protection module also includes a plurality of fire extinguishing devices, which correspond to the positions of the smoke sensors and can be removably installed on the side walls of the electrical box body; the fire extinguishing devices are connected to the fire protection assembly pipeline and are used for automatically extinguishing the fire under the control of the master control module after the smoke sensor detects the smoke signal and sends it to the master control module.

[0016] As a further improvement of the present invention, the energy storage batteries of the energy storage battery cluster are connected in series in sequence along the height direction through metal connectors, the two poles of the energy storage batteries at the upper and lower ends of the energy storage battery cluster are connected to the main circuit, and the main circuit is connected to the main control module; a plurality of switches are provided on the main circuit, which are located in the area between adjacent energy storage battery clusters; the switches are electrically connected to the main control module, and are used to cut off the connection between the damaged energy storage battery cluster and the main circuit.

[0017] As a further improvement of the present invention, an installation groove is opened on the upper part of the partition, and a flame retardant plate is provided at the installation groove. The flame retardant plate is slidably connected to the inner wall of the installation groove to form a flame retardant protection on the partition between adjacent energy storage battery clusters; at the same time, since the adjacent flame retardant plates reduce the escape of smoke, the smoke passes more between the adjacent flame retardant plates, so that the smoke sensor can more accurately sense the position of the energy storage battery cluster that generates the smoke.

[0018] As a further improvement of the present invention, a plurality of mounting holes are opened inside the mounting groove, and a plurality of sliding rods are provided at the bottom of the flame retardant plate, which are slidably connected to the inside of the mounting holes; a plurality of iron blocks are embedded and installed inside the flame retardant plate, and a plurality of magnets are embedded in the mounting groove, corresponding to the positions of the iron blocks, so as to normally install the flame retardant plate inside the mounting groove; the magnetism of the magnet is weakened after being heated, and a spring is provided between the end of the sliding rod and the bottom of the mounting hole, so that the flame retardant plate slides out from the inside of the mounting groove.

[0019] As a further improvement of the present invention, a photoelectric sensor is provided on the inner side of the electrical box body and is connected to the signal of the main control module; the photoelectric sensor is detachably installed on one side of the inner wall of the electrical box body parallel to the partition, corresponding to the position after the flame retardant plate slides out, and is used to determine the combustion energy storage battery cluster area by monitoring the sliding state of the flame retardant plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a cooling box to cool the energy storage batteries on the adjacent two sides, and by using the fire protection module and the partition, a flame retardant effect is achieved, and the safe operation of the energy storage box is realized; by setting the adjacent branch pipes of the shunt pipeline in the opposite direction to connect the cooling box, the branch pipes are respectively directed to the two sides of the energy storage battery unit, so that the cooling boxes on both sides of the energy storage battery can flow coolant from two directions to cool the energy storage battery, so that the cooling effect of each part of the energy storage battery is consistent, and better cooling balance is achieved; by setting the cooling box as a flexible material, the energy storage battery and the baffle are compressed by heat expansion, and the volume of the cooling box is contracted after being compressed, so that the flow rate of the coolant inside the cooling box is increased, thereby improving the cooling effect; by setting a retractable flame retardant plate on the partition, the flame retardant plate is extended after combustion to prevent the combustion from spreading to the adjacent energy storage battery cluster, and at the same time, through the smoke flow channel formed between the adjacent flame retardant plates, the smoke sensor accurately senses the position of the burning energy storage battery cluster and timely feeds back to the main control unit, thereby cutting off the circuit connection and using the fire extinguishing device to accurately extinguish the energy storage battery cluster, so as to achieve a flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the energy storage battery unit of the present invention;

[0023] Figure 3 It is a schematic diagram of the cooling module structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the fire protection module of the present invention;

[0025] Figure 5 It is a schematic diagram of the circuit structure of the energy storage battery cluster of the present invention;

[0026] Figure 6 It is a schematic diagram of the partition structure of the present invention;

[0027] Figure 7 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0028] Description of the numbers in the figure:

[0029] 1 electric box body, 2 energy storage battery unit, 21 energy storage box shell, 22 cooling module, 221 liquid inlet, 222 liquid outlet, 223 shunt pipeline, 2231 main pipe, 2232 branch pipe, 224 baffle, 225 cooling box, 23 partition, 231 mounting groove, 2311 mounting hole, 2312 magnet, 232 flame retardant plate, 2321 sliding rod, 2322 iron block, 233 spring, 24 energy storage battery cluster, 241 energy storage battery, 242 metal connector, 25 main circuit, 251 switch, 3 master control module, 4 fire protection module, 41 fire protection assembly, 42 smoke sensor, 43 fire extinguishing device, 5 photoelectric sensor. DETAILED DESCRIPTION

[0030] Specific embodiment 1: Please refer to Figure 1-Figure 7 A partitioned isolated flame-retardant energy storage box comprises a box body 1 and energy storage battery units 2, a master control module 3 and a fire fighting module 4 which are detachably installed inside the box body 1, the master control module 3 being electrically connected to the energy storage battery units 2 and the fire fighting module 4 respectively, for controlling the energy storage battery units 2 to store electricity and discharge electricity, and controlling the fire fighting module 4 to handle fires occurring in the energy storage battery units 2.

[0031] like Figure 2 The energy storage battery unit 2 shown includes an energy storage box shell 21, a cooling module 22, a plurality of partitions 23 and a plurality of energy storage battery clusters 24. The energy storage battery cluster 24 is an integration of a plurality of electrically connected energy storage batteries 241, which are arranged in an array inside the energy storage box shell 21. Adjacent energy storage battery clusters 24 are partitioned, isolated and supported by partitions 23; and adjacent energy storage batteries 241 are separated by cooling modules 22.

[0032] The fire fighting module 4 includes a fire fighting assembly 41 and a plurality of smoke sensors 42. The fire fighting assembly 41 is electrically connected to the master control module 3 and is used to receive fire fighting instructions issued by the master control module 3. The smoke sensors 42 are detachably installed on the top of the energy storage battery cluster 24 and are signal-connected to the master control module 3 to monitor the smoke after the combustion of the energy storage battery cluster 24 and send the smoke signal to the master control module 3, so that the master control module 3 controls the fire fighting assembly 41 to handle the fire occurring in the energy storage battery unit 2.

[0033] The cooling module 22 includes a plurality of cooling boxes 225 . The cooling boxes 225 are sandwiched between two adjacent energy storage batteries 241 and are used to cool the surfaces of the energy storage batteries 241 .

[0034] Specifically, Figure 3The cooling module 22 shown also includes a liquid inlet 221, a liquid outlet 222, a pair of shunt pipes 223 and a plurality of baffles 224. The shunt pipes 223 are respectively arranged in front and rear of the energy storage battery cluster 24. The liquid inlet 221 and the liquid outlet 222 are respectively connected to the shunt pipes 223 in front and rear. The shunt pipe 223 includes a main pipe 2231 and a plurality of branch pipes 2232. The branch pipes 2232 are connected to the cooling box 225. The baffles 224 are tightly attached to the upper and lower sides of the energy storage battery 241. The cooling box 225 is located between the baffles 224 to which the adjacent energy storage batteries 241 are tightly attached, so that the energy storage batteries 241, the cooling box 225 and the baffles 224 are tightly arranged in the energy storage box shell 21.

[0035] Specifically, the adjacent branch pipes 2232 of the shunt pipe 223 are arranged in opposite directions, and the branch pipes 2232 are respectively directed to the two sides of the energy storage battery unit 2; the cooling box 225 is provided with a water inlet end and a water outlet end which are diagonally distributed, and the water inlet end and the water outlet end are respectively connected to the branch pipes 2232 of the shunt pipe 223 which are distributed front and back, so that the cooling boxes 225 on both sides of the energy storage battery 241 can flow coolant from two directions to cool the energy storage battery 241, so that the cooling effect of each part of the energy storage battery 241 is consistent, avoiding the weakening of the cooling effect as the coolant flows, and achieving better cooling balance.

[0036] Specifically, the cooling box 225 is made of a flexible material, and can reduce its volume after the energy storage battery 241 and the baffle 224 are expanded by heat and compressed, thereby increasing the flow rate of the fluid inside the cooling box 225 after the volume is reduced, thereby improving the cooling effect.

[0037] Specifically, a surface of the baffle 224 on one side close to the energy storage battery 241 is provided with a plurality of evenly arranged grooves, which are used to increase the contact area between the energy storage battery 241 and the baffle 224, thereby facilitating heat transfer; at the same time, the grooves can also reduce or destroy the air layer between the contact surface of the energy storage battery 241 and the baffle 224, thereby further improving the heat transfer efficiency.

[0038] Specifically, Figure 4 The fire-fighting module 4 shown also includes a plurality of fire-extinguishing devices 43, which can be inert gas fire extinguishers or perfluorohexanone fire extinguishers; the fire-extinguishing devices 43 correspond to the positions of the smoke sensors 42, and the fire-extinguishing devices 43 can be detachably installed on the side wall of the electrical box body 1; the fire-extinguishing devices 43 are connected to the fire-fighting assembly 41 pipeline, and are used for automatically extinguishing the fire under the control of the master control module 3 after the smoke sensor 42 detects the smoke signal and sends it to the master control module 3, thereby improving the safety of equipment operation.

[0039] Specifically, Figure 5The energy storage batteries 241 of the energy storage battery 24 shown are connected in series in the height direction in sequence through the metal connectors 242. The two poles of the energy storage batteries 241 at the upper and lower ends of the energy storage battery cluster 24 are connected to the main circuit 25, and the main circuit 25 is connected to the master control module 3, so that the master control module 3 can control the energy storage batteries 241 to store or discharge electricity. The main circuit 25 is provided with a plurality of switches 251, which are located in the area between adjacent energy storage battery clusters 24. The switches 251 are electrically connected to the master control module 3, and are opened or closed by the master control module 3. After a failure occurs in an energy storage battery cluster 24, the connection with the energy storage battery cluster 24 that is not failed is promptly cut off to ensure the connection of the main circuit 25, so that the occurrence of the failure area will not affect the operation of the energy storage battery unit 2.

[0040] Specifically, Figure 6 The partition 23 shown is provided with a mounting groove 231 on the upper part, and a flame retardant plate 232 is provided at the mounting groove 231. The flame retardant plate 232 is slidably connected to the inner wall of the mounting groove 231. When the flame retardant plate 232 slides out of the mounting groove 231, a better flame retardant protection is formed on the partition 23 between adjacent energy storage battery clusters 24 through a higher barrier; at the same time, due to the increase in the adjacent flame retardant plates 232, the escape of smoke is reduced, so that more smoke passes through between the adjacent flame retardant plates 232, so that the smoke sensor 42 can more accurately sense the position of the energy storage battery cluster 24 that generates the smoke, thereby making the position signal fed back to the main control module 3 more accurate.

[0041] Specifically, Figure 7 The mounting groove 231 shown in the figure has a plurality of mounting holes 2311 therein, a plurality of sliding rods 2321 are provided at the bottom of the flame retardant plate 232, and the sliding rods 2321 are slidably connected to the inside of the mounting holes 2311; a plurality of iron blocks 2322 are embedded and installed inside the flame retardant plate 232, and a plurality of magnets 2312 are embedded in the mounting groove 231, corresponding to the positions of the iron blocks 2322, so that the flame retardant plate 232 is normally installed inside the mounting groove 231 through magnetic force; since the magnetism of the magnet 2312 is weakened after being heated, a spring 233 is provided between the end of the sliding rod 2321 and the bottom of the mounting hole 2311, so when the energy storage battery 241 burns, the magnetism of the magnet 2312 will be weakened, so that the flame retardant plate 232 is affected by the elasticity of the spring 233 and slides out of the mounting groove 231, thereby achieving the purpose of forming flame retardant protection and smoke flow channel.

[0042] Specifically, Figure 4A photoelectric sensor 5 is provided on the inner side of the electrical box body 1, which is connected to the master control module 3 by signal. The photoelectric sensor 5 is detachably installed on one side of the inner wall of the electrical box body 1 parallel to the partition 23, corresponding to the position of the flame retardant plate 232 after sliding out, and is used to monitor the sliding out state of the flame retardant plate 232 on the partition 23, so as to further accurately identify the burning energy storage battery cluster 24 area through the sliding out of the flame retardant plate 232 combined with the signal of the smoke sensor 42, so that the master control module 3 can more accurately shut down the circuit where the faulty energy storage battery cluster 24 is located, thereby ensuring the safety of the energy storage battery cluster 24 that is not faulty.

[0043] During use, the two ends of the energy storage battery unit 2 are cooled simultaneously through the shunt pipe 223 to achieve better temperature uniformity; at the same time, when the energy storage battery 241 increases in temperature during operation, the baffle 224 will expand and squeeze the cold water tank 225 due to thermal expansion and contraction. The cold water tank 225 is compressed and reduces in volume, thereby increasing the flow rate of the fluid inside the cooling box 225 after the volume is reduced, thereby improving the cooling effect of the cooling box 225; if the energy storage battery 241 burns, the smoke sensor 42 can first sense the combustion. The smoke generated is detected and the smoke signal is sent to the main control module 3. Secondly, due to the increase in combustion temperature, the magnetism of the magnet 2312 is weakened, so that the flame retardant plate 232 slides out from the surface of the partition 23. The photoelectric sensor 5 detects the sliding of the flame retardant plate 232 and thus determines the position of the energy storage battery cluster 24 where the burning energy storage battery 241 is located. Therefore, the main control module 3 cuts off the connection between the energy storage battery cluster 24 and the main circuit 25, and issues a fire extinguishing command to the fire fighting assembly 41, thereby achieving the effect of automatic fire extinguishing and flame retardancy through the fire extinguishing device 43.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A partitioned and isolated flame-retardant energy storage box, characterized in that: It comprises an electric box body (1), and an energy storage battery unit (2), a master control module (3), and a fire fighting module (4) which are detachably mounted inside the electric box body (1), respectively, and the master control module (3) is electrically connected to the energy storage battery unit (2) and the fire fighting module (4) respectively; The energy storage battery unit (2) comprises an energy storage box shell (21), a cooling module (22), a plurality of partitions (23) and a plurality of energy storage battery clusters (24); the energy storage battery clusters (24) are arranged in an array inside the energy storage box shell (21); adjacent energy storage battery clusters (24) are partitioned, isolated and supported by the partitions (23); the energy storage battery cluster (24) comprises a plurality of electrically connected energy storage batteries (241); adjacent energy storage batteries (241) are separated by the cooling module (22); The fire protection module (4) comprises a fire protection assembly (41) and a plurality of smoke sensors (42); the fire protection assembly (41) is electrically connected to the master control module (3); the smoke sensors (42) are detachably mounted on the top of the energy storage battery cluster (24) and are used to monitor smoke from the combustion of the energy storage battery cluster (24); The cooling module (22) comprises a plurality of cooling boxes (225), wherein the cooling boxes (225) are sandwiched between two adjacent energy storage batteries (241) and are used to cool the surface of the energy storage batteries (241); The cooling box (225) is made of a flexible material and can reduce its volume after being pressurized, so as to increase the flow rate of the fluid inside the cooling box (225); An installation groove (231) is formed on the upper portion of the partition (23), and a flame retardant plate (232) is provided at the installation groove (231). The flame retardant plate (232) is slidably connected to the inner wall of the installation groove (231) and is used to form a flame retardant protection on the partition (23) between adjacent energy storage battery clusters (24); adjacent flame retardant plates (232) form a smoke flow channel, which is used for the smoke sensor (42) to sense the position of the energy storage battery cluster (24) generating smoke; A plurality of mounting holes (2311) are formed inside the mounting groove (231); a plurality of sliding rods (2321) are provided at the bottom of the flame retardant plate (232); the sliding rods (2321) are slidably connected to the inside of the mounting holes (2311); a spring (233) is provided between the end of the sliding rod (2321) and the bottom of the mounting hole (2311); a plurality of iron blocks (2322) are embedded and installed inside the flame retardant plate (232); a plurality of magnets (2312) are embedded in the mounting groove (231) and correspond to the positions of the iron blocks (2322) for mounting the flame retardant plate (232) inside the mounting groove (231).

2. According to claim 1, a partitioned isolated flame-retardant energy storage box is characterized in that: The cooling module (22) further comprises a liquid inlet (221), a liquid outlet (222), a pair of shunt pipelines (223) and a plurality of baffles (224); the shunt pipelines (223) are respectively arranged in front of and behind the energy storage battery cluster (24); the liquid inlet (221) and the liquid outlet (222) are respectively connected to the shunt pipelines (223) in front and in the rear; the shunt pipeline (223) comprises a main pipe (2231) and a plurality of branch pipes (2232); the branch pipes (2232) are connected to a cooling box (225); the baffles (224) are closely attached to the upper and lower sides of the energy storage battery (241); and the cooling box (225) is located between the baffles (224) to which adjacent energy storage batteries (241) are closely attached.

3. According to claim 2, a partitioned isolated flame-retardant energy storage box is characterized in that: Adjacent branch pipes (2232) of the shunt pipeline (223) are arranged in opposite directions, and the branch pipes (2232) are respectively directed to two sides of the energy storage battery unit (2); the cooling box (225) is provided with a diagonally distributed water inlet end and a water outlet end, and the water inlet end and the water outlet end are respectively connected to the branch pipes (2232) of the shunt pipeline (223), and are used for balanced cooling of the energy storage battery (241).

4. A partitioned isolated flame-retardant energy storage box according to claim 2, characterized in that: A surface of one side of the baffle (224) close to the energy storage battery (241) is provided with a plurality of evenly arranged grooves, which are used to increase the contact area between the energy storage battery (241) and the baffle (224).

5. According to claim 1, a partitioned isolated flame-retardant energy storage box is characterized in that: The fire fighting module (4) further comprises a plurality of fire extinguishing devices (43), the positions of the fire extinguishing devices (43) corresponding to the positions of the smoke sensors (42), and the fire extinguishing devices (43) are detachably mounted on the side wall of the electrical box body (1); the fire extinguishing devices (43) are connected to the pipeline of the fire fighting assembly (41) and are used for automatically extinguishing the fire after the smoke sensors (42) detect a smoke signal.

6. The partitioned isolation flame-retardant energy storage box according to claim 1 is characterized in that: The energy storage batteries (241) of the energy storage battery cluster (24) are sequentially connected in series along the height direction via metal connectors (242); the two poles of the energy storage batteries (241) at the upper and lower ends of the energy storage battery cluster (24) are connected to a main circuit (25); the main circuit (25) is connected to a master control module (3); a plurality of switches (251) are provided on the main circuit (25), and are located in an area between adjacent energy storage battery clusters (24); the switches (251) are electrically connected to the master control module (3) and are used to cut off the connection between a damaged energy storage battery cluster (24) and the main circuit (25).

7. The partitioned and isolated flame-retardant energy storage box according to claim 1 is characterized in that: A photoelectric sensor (5) is provided on the inner side of the electrical box body (1) and is connected to the master control module (3) by signal; the photoelectric sensor (5) is detachably mounted on a side of the inner wall of the electrical box body (1) parallel to the partition (23), corresponding to the position of the flame retardant plate (232) after it slides out, and is used to determine the combustion energy storage battery cluster (24) area by monitoring the slide-out state of the flame retardant plate (232).

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