5-megawatt-hour direct current side energy storage container

Abstract

The invention relates to the technical field of electric power storage, and discloses a 5-megawatt direct current side energy storage container which comprises a container body, a plurality of vertical plates distributed at equal intervals are fixedly connected in the container body, a plurality of first supporting frames distributed at equal intervals are fixedly connected between the opposite faces of every two vertical plates from top to bottom, and battery packs are placed on the first supporting frames; a battery pack is monitored in real time through a temperature sensor and a smoke sensor, when the battery pack generates a fire due to a fault, a gas supply assembly supplies gas to a guide frame, a gas outlet groove in the guide frame is attached to the outer wall of the battery pack in parallel, and when a gas extinguishing agent is sprayed out, the gas extinguishing agent is guided by the gas outlet groove to be sprayed to the outer wall of the battery pack; and the fire extinguishing agent can quickly and accurately reach the periphery of the fire battery pack, so that the problem that in the prior art, the fire extinguishing agent is difficult to quickly and accurately reach the periphery of the fire battery pack, the fire extinguishing golden period is wasted, and economic losses are caused is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power storage, and more specifically, to a 5 MWh DC side energy storage container. Background Art

[0002] A DC side energy storage container usually refers to a device that combines a battery energy storage system with a containerized structure, which is mainly used for power storage and management. 5 MWh refers to the energy storage capacity of the energy storage container, which means that it can store 5 MWh of electricity (that is, under ideal conditions, a 5MW load can supply power for 1 hour, or a 1MW load can supply power for 5 hours). A 5MWh DC side energy storage container is a large-scale energy storage solution, which is widely used in power grid frequency regulation, emergency backup power supply, renewable energy storage and other fields. In order to ensure the safe and stable operation of the system, especially in terms of safety risks such as fire, effective fire prevention measures must be taken, including temperature control, gas leak detection, fire extinguishing systems, etc.

[0003] The existing DC side energy storage container fire extinguishing system usually uses gas fire extinguishing (such as carbon dioxide, heptafluoropropylene or dry powder fire extinguishing system). These fire extinguishing agents can quickly reduce the oxygen concentration and suppress the spread of fire. Fire extinguishing nozzles are usually installed on the top surface of the container. This is because most fires start from inside the battery pack and spread upward. However, there are many battery packs in the 5MWh DC side energy storage container. The fire extinguishing agent sprayed by the fire extinguishing nozzle on the inner top surface is difficult to quickly reach the periphery of the burning battery. For example, when a fire occurs in the middle or bottom battery, the fire extinguishing agent sprayed by the fire extinguishing nozzle is difficult to quickly and accurately reach the periphery of the burning battery, resulting in a waste of the golden period for fire extinguishing and causing economic losses.

[0004] To this end, the present invention provides a 5 MWh DC side energy storage container. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a 5 MWh DC side energy storage container, comprising a box body, wherein a plurality of equally spaced vertical plates are fixedly connected in the box body, a plurality of equally spaced support frames 1 are fixedly connected from top to bottom between the opposite surfaces of every two of the vertical plates, a battery pack is placed on the support frame 1, a plurality of the vertical plates are fixedly connected with an isolation plate, a plurality of the vertical plates are also fixedly connected with a support frame 2, a high-voltage cabinet is placed on the support frame 2, the high-voltage cabinet is arranged below the isolation plate, the high-voltage cabinet is used to protect the battery pack, a liquid cooling mechanism is arranged in the box body, the liquid cooling mechanism is used to cool down the battery pack, and a fire fighting mechanism is arranged in the box body, the fire fighting mechanism is used to prevent fire caused by failure The fire-fighting mechanism comprises a fire-fighting chamber arranged inside a box body, wherein the fire-fighting chamber is provided with an air supply assembly, wherein a plurality of guide frames are arranged inside the box body, wherein the guide frames are connected with the air supply assembly, and a plurality of the guide frames are arranged on the side walls of a plurality of battery packs, wherein the guide frames are hollow inside, and a plurality of air outlet grooves are provided on the side walls of the guide frames, wherein the plurality of air outlet grooves are parallel to and fit around the battery pack, and a temperature sensor and a smoke sensor are installed on the side walls of the guide frames, wherein the probes of the temperature sensor and the smoke sensor are in contact with the outer wall of the battery pack, and a copper busbar is arranged inside the fire-fighting chamber, wherein the copper busbar is electrically connected with a plurality of battery packs, and wherein the copper busbar is used to convert current from input to output.

[0007] Through the above scheme, the battery pack is monitored in real time through the temperature sensor and the smoke sensor. When the battery pack catches fire due to a malfunction, the gas supply assembly supplies gas to the guide frame, and the gas outlet groove on the guide frame is arranged parallel to the outer wall of the battery pack. When the gas fire extinguishing agent is sprayed out, the gas outlet groove guides the gas fire extinguishing agent to spray to the outer wall of the battery pack, and can quickly and accurately reach the periphery of the burning battery pack, thereby solving the problem in the prior art that the fire extinguishing agent is difficult to quickly and accurately reach the periphery of the burning battery pack, resulting in a waste of the golden period for fire extinguishing and causing economic losses.

[0008] Preferably, the upper and lower bottom surfaces of the isolation plate are both fixedly connected with condensation felt.

[0009] Through the above solution, the problem of water droplets formed by the liquid cooling mechanism falling onto the high-voltage cabinet is solved by using the condensation water felt.

[0010] Preferably, the liquid cooling mechanism includes a liquid cooling chamber arranged inside the box body, the liquid cooling chamber is fixedly connected to a water tank, the water tank is filled with cooling liquid, a water pump is installed on the top surface of the water tank, the input end of the water pump is connected to a water inlet pipe and the water inlet pipe extends into the water tank, the output end of the water pump is connected to a liquid delivery pipe, a groove is opened inside the vertical plate, and a heat exchange pipe is buried in the groove, both ends of the heat exchange pipe pass through the top surface of the vertical plate to form a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid delivery pipe, the liquid outlet is connected to a drain pipe, the drain pipe passes through the water tank and extends into the water tank, a heat sink is also fixedly connected to the side of the water tank, a motor is fixedly connected to the inner wall of the liquid cooling chamber, a rotating shaft is fixedly connected to the output end of the motor, a plurality of fan blades are fixedly connected to the bottom end of the rotating shaft, and the fan blades are arranged on the top of the heat sink, a stirring mechanism is arranged in the water tank, and a heat transfer component is arranged between the support frame 1 and the heat exchange pipe.

[0011] Through the above scheme, the water pump is driven to suck the coolant in the water tank and send it to the liquid delivery pipe, and heat is exchanged with the support frame 1 through the heat transfer component. The support frame 1 contacts the battery pack, and the temperature of the support frame 1 drops, which can transfer the heat of the battery pack, thereby playing a role in cooling and exchanging heat for the battery pack.

[0012] Preferably, the stirring mechanism includes a driving wheel fixedly connected to a rotating shaft, a vertical stirring shaft is rotatably connected in the water tank, the stirring shaft passes through the water tank and extends to the outside and is fixedly connected to a driven wheel, a belt is arranged between the driving wheel and the driven wheel, and the driving wheel and the driven wheel are connected by a belt transmission, a plurality of stirring rods are fixedly connected to the side wall of the stirring shaft, and the plurality of stirring rods are all arranged in the water tank.

[0013] Through the above scheme, the rotation of the stirring rod can stir the coolant, so that the coolant transfers heat evenly, which is beneficial to quickly transfer the heat of the coolant to the heat sink. Combined with the rotation of the fan blades, the coolant can be quickly dissipated and cooled, thereby facilitating the cooling of the battery pack.

[0014] Preferably, the inner top surface of the box body is integrally formed with a circuit chamber 1, and the liquid supply pipe and the liquid discharge pipe are both laid in the circuit chamber 1.

[0015] Through the above scheme, circuit chamber 1 can accommodate the liquid supply pipe and the liquid discharge pipe, and circuit chamber 1 is provided with a flip door outside the box body. The pipeline in circuit chamber 1 can be inspected by opening the flip door, making the inspection of the pipeline of the liquid cooling mechanism more convenient.

[0016] Preferably, the heat transfer assembly includes a heat conducting plate fixedly connected to a side wall of the support frame, the heat conducting plate penetrates the side wall of the heat exchange tube and extends into the interior of the heat exchange tube, and a sealing ring is provided on the heat exchange tube.

[0017] Through the above solution, the sealing ring can play a sealing role to prevent the coolant in the heat exchange tube from overflowing.

[0018] Preferably, the air supply assembly includes a storage tank fixedly connected in the fire fighting room, the inner wall of the box is integrally formed with a circuit chamber 2, an air supply pipe is laid in the circuit chamber 2, the air supply pipe and the storage tank are connected by a connecting pipe, and a solenoid valve is installed on the connecting pipe, the air supply pipe is connected to several guide frames, and a controller is provided in the fire fighting room, and the controller is electrically connected to the solenoid valve, the temperature sensor, and the smoke sensor.

[0019] Through the above scheme, the solenoid valve is opened, and the gas fire extinguishing agent can be sent to the gas guide frame through the air supply pipe and discharged to the fire point to extinguish the fire.

[0020] Preferably, the heat exchange tube is bent multiple times, and a plurality of heat conduction plates are provided on one side wall of the support frame, and the plurality of heat conduction plates are equidistantly distributed.

[0021] Through the above scheme, the heat exchange tube is bent multiple times, which is convenient for setting up multiple heat conducting plates. A large number of heat conducting plates is beneficial to the heat transfer of the battery pack on the support frame. The heat is conducted to the coolant, which is beneficial to the cooling of the battery pack.

[0022] Preferably, the heat conducting plates of the support frames 1 on both sides of the vertical plate are staggeredly distributed.

[0023] Through the above scheme, the heat conduction plates are staggered and reasonably arranged, which can increase the utilization rate of the heat exchange tubes.

[0024] Preferably, four air outlet grooves are provided, and each of the air outlet grooves is a rectangular groove.

[0025] Through the above scheme, the gaseous fire extinguishing agent quickly contacts all surfaces of the battery pack after being discharged, which can reduce the oxidation concentration and inhibit combustion. The fire extinguishing agent arrives at a fast speed, with high arrival accuracy and good fire extinguishing effect.

[0026] The beneficial effects of the present invention are as follows: the 5 MWh DC side energy storage container of the present invention monitors the battery pack in real time through a temperature sensor and a smoke sensor. When a fire occurs in the battery pack due to a fault, the gas supply assembly supplies gas to the guide frame, and the gas outlet groove on the guide frame is arranged parallel to the outer wall of the battery pack. When the gas fire extinguishing agent is sprayed out, the gas outlet groove guides the gas fire extinguishing agent to spray to the outer wall of the battery pack, and can quickly and accurately reach the outer periphery of the battery pack on fire, thereby solving the problem in the prior art that the fire extinguishing agent is difficult to quickly and accurately reach the outer periphery of the battery pack on fire, resulting in a waste of the golden period for fire extinguishing and causing economic losses.

[0027] The 5 MWh DC side energy storage container of the present invention sucks out the coolant in the water tank through the water pump in the liquid cooling mechanism and delivers it to the liquid delivery pipe, and exchanges heat with the support frame 1 through the heat transfer component. The support frame 1 contacts the battery pack, and the temperature of the support frame 1 decreases, which can transfer the heat of the battery pack, thereby playing a role in cooling and exchanging heat for the battery pack.

[0028] The 5 MWh DC side energy storage container of the present invention is opened by the solenoid valve in the fire-fighting mechanism, and the gas fire extinguishing agent can be sent to the gas guide frame through the air supply pipe and discharged to the fire point to extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a stereogram of an embodiment of the present invention; Figure 2 It is a schematic diagram of a local structure in the present invention; Figure 3 yes Figure 2 A partial enlarged view of the middle part; Figure 4 It is a schematic diagram of the structure of the air guide frame of the present invention; Figure 5 is a cross-sectional view of the air guide frame of the present invention; Figure 6 is a cross-sectional view of a vertical plate of the present invention Figure 1 ; Figure 7 is a cross-sectional view of a vertical plate of the present invention Figure 2 ; Figure 8 yes Figure 7 A partial enlarged view of point B in the middle; Fig. 9 It is a structural schematic diagram of the liquid cooling mechanism of the present invention; Fig.10 It is a structural schematic diagram of the fire fighting mechanism of the present invention.

[0030] In the figure: 1, box body; 2, vertical plate; 3, support frame 1; 4, battery pack; 5, isolation plate; 6, support frame 2; 7, high-voltage cabinet; 8, liquid cooling mechanism; 81, liquid cooling chamber; 82, water tank; 83, water pump; 84, liquid delivery pipe; 85, line chamber 1; 86, liquid discharge pipe; 87, heat exchange pipe; 88, motor; 89, rotating shaft; 810, heat sink; 811, fan blade; 9, stirring mechanism; 91, driving wheel; 92, from Driving wheel; 93, stirring shaft; 10, fire-fighting mechanism; 101, fire-fighting room; 102, storage tank; 103, solenoid valve; 104, circuit room 2; 105, air supply pipe; 106, guide frame; 107, air outlet groove; 108, controller; 11, copper busbar; 12, heat transfer component; 121, heat conduction plate; 122, sealing ring; 13, liquid inlet; 14, liquid outlet; 15, temperature sensor; 16, smoke sensor. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples. Example

[0032] like Figures 1 to 10 As shown, the 5 MWh DC side energy storage container described in the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , including a box body 1, a plurality of equally spaced vertical plates 2 are fixedly connected in the box body 1, a plurality of equally spaced support frames 3 are fixedly connected between the opposite surfaces of every two vertical plates 2 from top to bottom, a battery pack 4 is placed on the support frame 3, isolation plates 5 are fixedly connected between the plurality of vertical plates 2, condensation felt is fixedly connected to the upper and lower bottom surfaces of the isolation plates 5, support frames 6 are also fixedly connected between the plurality of vertical plates 2, a high-voltage cabinet 7 is placed on the support frame 6, the high-voltage cabinet 7 is arranged below the isolation plates 5, the high-voltage cabinet 7 is used to protect the battery pack 4, a liquid cooling mechanism 8 is arranged in the box body 1, the liquid cooling mechanism 8 is used to cool down the battery pack 4 for heat exchange, a fire-fighting mechanism 10 is arranged in the box body 1, the fire-fighting mechanism 10 is used to extinguish the fire of the battery pack 4 caused by a malfunction, and the fire-fighting mechanism 10 includes a Fire fighting room 101, fire fighting room 101 is provided with an air supply component, a plurality of guide frames 106 are provided in the box body 1, the guide frames 106 are connected to the air supply component, a plurality of guide frames 106 are provided on the side walls of a plurality of battery packs 4, the guide frames 106 are hollow inside, a plurality of air outlet grooves 107 are provided on the side walls of the guide frames 106, the plurality of air outlet grooves 107 are parallel to and close to the four sides of the battery pack 4, four air outlet grooves 107 are provided, and the air outlet grooves 107 are rectangular grooves, a temperature sensor 15 and a smoke sensor 16 are installed on the side walls of the guide frames 106, the probes of the temperature sensor 15 and the smoke sensor 16 are in contact with the outer wall of the battery pack 4, a copper busbar 11 is provided in the fire fighting room 101, the copper busbar 11 is electrically connected to a plurality of battery packs 4, and the copper busbar 11 is used to convert current from input to output.

[0033] Specifically, the battery pack 4 is monitored in real time through the temperature sensor 15 and the smoke sensor 16. When the battery pack 4 catches fire due to a malfunction, the gas supply assembly supplies gas to the guide frame 106. The gas outlet groove 107 on the guide frame 106 is arranged in parallel with the outer wall of the battery pack 4. When the gas fire extinguishing agent is sprayed out, the gas outlet groove 107 guides the gas fire extinguishing agent to spray to the outer wall of the battery pack 4. The four gas outlet grooves 107 correspond to the four rectangular surfaces of the battery pack 4. After the gas fire extinguishing agent is discharged, it quickly contacts each surface of the battery pack 4, which can reduce the oxidation concentration and inhibit combustion. The fire extinguishing agent arrives at a fast speed, with high arrival accuracy and good fire extinguishing effect, thereby solving the problem in the prior art that the fire extinguishing agent is difficult to quickly and accurately reach the periphery of the burning battery pack 4, resulting in a waste of the golden period of fire extinguishing and causing economic losses. The condensation water felt can absorb condensed water, thereby preventing water droplets condensed on the outer wall of the battery pack 4 due to liquid condensation from falling to the high-voltage cabinet 7 under the isolation plate 5.

[0034] Please refer to Figure 6 , Fig. 9 , Fig.10 The liquid cooling mechanism 8 includes a liquid cooling chamber 81 arranged inside the box body 1, a water tank 82 is fixedly connected to the liquid cooling chamber 81, the water tank 82 is filled with cooling liquid, a water pump 83 is installed on the top surface of the water tank 82, the input end of the water pump 83 is connected with a water inlet pipe and the water inlet pipe extends into the water tank 82, the output end of the water pump 83 is connected with a liquid delivery pipe 84, a groove is opened inside the vertical plate 2, and a heat exchange pipe 87 is buried in the groove, both ends of the heat exchange pipe 87 pass through the top surface of the vertical plate 2 and form a liquid inlet 13 and a liquid outlet 14, the liquid inlet 13 is connected with the liquid delivery pipe 84, and the liquid outlet 14 is connected with a drain pipe 86, a drain pipe 86 passes through the water tank 82 and extends into the water tank 82, a heat sink 810 is also fixedly connected to the side of the water tank 82, a motor 88 is fixedly connected to the inner wall of the liquid cooling chamber 81, a rotating shaft 89 is fixedly connected to the output end of the motor 88, a plurality of fan blades 811 are fixedly connected to the bottom end of the rotating shaft 89, and the fan blades 811 are arranged on the top of the heat sink 810, a stirring mechanism 9 is arranged in the water tank 82, a heat transfer component 12 is arranged between the support frame 3 and the heat exchange tube 87, the inner top surface of the box body 1 is integrally formed with a circuit chamber 85, and the liquid delivery pipe 84 and the drain pipe 86 are both laid in the circuit chamber 85.

[0035] Specifically, when the battery pack 4 needs to be cooled by heat exchange, the water pump 83 is driven to suck out the coolant in the water tank 82 and send it to the liquid delivery pipe 84. The liquid delivery pipe 84 is connected with the liquid inlet 13 of the plurality of heat exchange pipes 87, and a rubber sealing ring is provided at the connection. The coolant flows in the heat exchange pipe 87 and exchanges heat with the support frame 3 through the heat transfer component 12. The support frame 3 contacts the battery pack 4, and the temperature of the support frame 3 drops, which can transfer the heat of the battery pack 4, thereby playing the role of cooling and exchanging heat for the battery pack 4. The heat dissipation of the water tank 82 is carried out through the heat sink 810. When the temperature of the water tank 82 is too high and the heat is discharged through the heat sink 810, the heat of the water tank 82 is discharged. When it is difficult to quickly reduce the temperature by heat dissipation, the motor 88 is driven to drive the rotating shaft 89 to rotate, thereby rotating the fan blades 811, and blowing air to the fins of the heat sink 810 to dissipate heat, so as to realize the cooling of the water tank 82 and the coolant. The coolant in the water tank 82 can be stirred by the stirring mechanism 9, so that the coolant transfers heat evenly, which is conducive to quickly transferring the heat of the coolant to the heat sink 810. The circuit chamber 1 85 can accommodate the liquid delivery pipe 84 and the liquid discharge pipe 86, and the circuit chamber 1 85 is provided with a flip door outside the box body 1. The flip door can be opened to inspect the pipelines in the circuit chamber 1 85, so that the inspection of the pipelines of the liquid cooling mechanism 8 is more convenient.

[0036] Please refer to Fig. 9 The stirring mechanism 9 includes a driving wheel 91 fixedly connected to the rotating shaft 89, a vertical stirring shaft 93 is rotatably connected in the water tank 82, the stirring shaft 93 penetrates the water tank 82 and extends to the outside and is fixedly connected to a driven wheel 92, a belt is arranged between the driving wheel 91 and the driven wheel 92, and the driving wheel 91 and the driven wheel 92 are connected by belt transmission, a plurality of stirring rods are fixedly connected to the side wall of the stirring shaft 93, and the plurality of stirring rods are all arranged in the water tank 82.

[0037] Specifically, when the rotating shaft 89 rotates, it can drive the driving wheel 91 to rotate, and then drive the driven wheel 92 and the stirring shaft 93 to rotate, and make the stirring rod on the stirring shaft 93 rotate. The rotation of the stirring rod can stir the coolant, so that the coolant transfers heat evenly, which is beneficial for the heat of the coolant to be quickly transferred to the heat sink 810. In conjunction with the rotation of the fan blades 811, the coolant can be quickly dissipated and cooled, thereby facilitating the cooling of the battery pack 4.

[0038] Please refer to Figure 6 , Figure 7 , Figure 8The heat transfer component 12 includes a heat conducting plate 121 fixedly connected to the side wall of the support frame 3. The heat conducting plate 121 penetrates the side wall of the heat exchange tube 87 and extends into the interior of the heat exchange tube 87. A sealing ring 122 is provided on the heat exchange tube 87. The heat exchange tube 87 is bent multiple times. There are a plurality of heat conducting plates 121 on the side wall of the support frame 3, and the heat conducting plates 121 are equidistantly distributed. The heat conducting plates 121 on the support frames 3 on both sides of the vertical plate 2 are staggered.

[0039] Specifically, the heat conducting plate 121 can be a copper-aluminum alloy. The copper-aluminum alloy has the advantages of being a metal plate with excellent thermal conductivity and stable chemical properties. The sealing ring 122 can play a sealing role to prevent the coolant in the heat exchange tube 87 from overflowing. The heat exchange tube 87 is bent multiple times, which is convenient for arranging multiple heat conducting plates 121. The number of heat conducting plates 121 is large, and the heat exchange efficiency is high, which is beneficial to the heat transfer of the battery pack 4 on the support frame 3. The heat is transferred to the coolant, which is beneficial to the cooling of the battery pack 4.

[0040] Please refer to Fig.10 The air supply assembly includes a storage tank 102 fixedly connected to the fire fighting room 101. The inner wall of the box body 1 is integrally formed with a circuit chamber 2 104. An air supply pipe 105 is laid in the circuit chamber 2 104. A connecting pipe is connected between the air supply pipe 105 and the storage tank 102, and a solenoid valve 103 is installed on the connecting pipe. The air supply pipe 105 is connected to a plurality of guide frames 106. A controller 108 is provided in the fire fighting room 101, and the controller 108 is electrically connected to the solenoid valve 103, the temperature sensor 15, and the smoke sensor 16.

[0041] Specifically, the storage tank 102 is a pressure container, and the gas fire extinguishing agent is pressurized and sent to the storage tank 102 for temporary storage. When the battery pack 4 catches fire due to a malfunction, the temperature sensor 15 and the smoke sensor 16 detect the abnormality and transmit a signal to the controller 108. The controller 108 is equipped with an ARM architecture chip, which can issue an opening command to the solenoid valve 103, that is, the gas fire extinguishing agent can be sent to the air guide frame 106 through the air supply pipe 105 and discharged to the fire point to extinguish the fire. The circuit room 104 is used to accommodate the air supply pipe 105, and the circuit room 104 is also provided with a flip door, which is convenient for the inspection and gas replenishment of the fire fighting mechanism 10.

[0042] How it works The battery pack 4 provides a DC voltage on the copper bus 11, which can be converted into AC power by an inverter or other device for use in the equipment. The high-voltage cabinet 7 is provided with circuit breakers, fuses, grounding switches and other equipment, which can be used to protect the battery pack 4 and prevent overload, short circuit and other faults; When the battery pack 4 provides a DC voltage, the battery pack 4 is monitored in real time through the temperature sensor 15 and the smoke sensor 16. When the battery pack 4 catches fire due to a fault, the temperature sensor 15 and the smoke sensor 16 detect the abnormality and transmit a signal to the controller 108. The controller 108 is provided with an ARM architecture chip, which can issue an opening command to the solenoid valve 103, that is, the gas fire extinguishing agent can be sent to the gas guide frame 106 through the gas delivery pipe 105 and discharged to the fire point to extinguish the fire. The gas outlet slot 101 on the guide frame 106 7 is arranged parallel to the outer wall of the battery pack 4. When the gas fire extinguishing agent is sprayed out, the gas outlet groove 107 guides the gas fire extinguishing agent to spray to the outer wall of the battery pack 4. The gas outlet groove 107 corresponds to the four rectangular surfaces of the battery pack 4. After the gas fire extinguishing agent is discharged, it quickly contacts each surface of the battery pack 4, which can reduce the oxidation concentration and inhibit combustion. The fire extinguishing agent arrives quickly, with high arrival accuracy and good fire extinguishing effect, thereby solving the problem in the prior art that the fire extinguishing agent is difficult to quickly and accurately reach the periphery of the battery pack 4 on fire, resulting in a waste of the golden period of fire extinguishing and causing economic losses. When the temperature of the battery pack 4 is high, the water pump 83 is driven to suck out the coolant in the water tank 82 and send it to the liquid delivery pipe 84. The liquid delivery pipe 84 is connected with the liquid inlet 13 of a plurality of heat exchange pipes 87, and a rubber sealing ring is provided at the connection. The coolant flows in the heat exchange pipe 87 and exchanges heat with the support frame 3 through the heat transfer component 12. The support frame 3 contacts the battery pack 4, and the temperature of the support frame 3 drops, which can transfer the heat of the battery pack 4, thereby playing the role of cooling and exchanging heat for the battery pack 4. The heat sink 810 is used to dissipate heat from the water tank 82. When the temperature of the water tank 82 is too high and it is difficult to quickly reduce its temperature through the heat sink 810, the driving motor 88 drives the rotating shaft 89 to rotate, thereby rotating the fan blades 811, which can blow air to dissipate heat on several fins of the heat sink 810 to achieve cooling of the water tank 82 and the coolant. The stirring mechanism 9 can stir the coolant in the water tank 82 to make the coolant transfer heat evenly, which is conducive to quickly transferring the heat of the coolant to the heat sink 810.

[0043] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. 5MWh DC side energy storage container, characterized by: The invention comprises a box body (1), wherein a plurality of equally spaced vertical plates (2) are fixedly connected inside the box body (1), a plurality of equally spaced support frames (3) are fixedly connected from top to bottom between the opposite surfaces of every two of the vertical plates (2), a battery pack (4) is placed on the support frame (3), an isolation plate (5) is fixedly connected between the plurality of vertical plates (2), a second support frame (6) is also fixedly connected between the plurality of vertical plates (2), a high-voltage cabinet (7) is placed on the second support frame (6), the high-voltage cabinet (7) is arranged below the isolation plate (5), and the high-voltage cabinet (7) is used to protect the battery pack (4); A liquid cooling mechanism (8) is provided in the box body (1), and the liquid cooling mechanism (8) is used to cool down and exchange heat for the battery pack (4); A fire-fighting mechanism (10) is arranged in the box (1), and the fire-fighting mechanism (10) is used to extinguish a fire in a battery pack (4) that has a malfunction and causes a fire. The fire-fighting mechanism (10) comprises a fire-fighting chamber (101) arranged in the box (1), and the fire-fighting chamber (101) is provided with an air supply assembly. A plurality of guide frames (106) are arranged in the box (1), and the guide frames (106) are connected to the air supply assembly. A plurality of the guide frames (106) are arranged on the side walls of a plurality of battery packs (4). The guide frames (106) are hollow inside, and the side walls of the guide frames (106) are provided with a plurality of air outlet grooves (107). The plurality of air outlet grooves (107) are parallel to and closely attached to the four sides of the battery pack (4). A temperature sensor (15) and a smoke sensor (16) are installed on the side walls of the guide frames (106), and the probes of the temperature sensor (15) and the smoke sensor (16) are in contact with the outer wall of the battery pack (4); A copper busbar (11) is arranged in the fire fighting room (101), the copper busbar (11) is electrically connected to a plurality of battery packs (4), and the copper busbar (11) is used to convert current from input to output.

2. The 5 MWh DC side energy storage container according to claim 1, characterized in that: The upper and lower bottom surfaces of the isolation plate (5) are both fixedly connected with condensation felt.

3. The 5 MWh DC side energy storage container according to claim 2, characterized in that: The liquid cooling mechanism (8) comprises a liquid cooling chamber (81) arranged inside the box body (1), a water tank (82) is fixedly connected inside the liquid cooling chamber (81), the water tank (82) is filled with cooling liquid, a water pump (83) is installed on the top surface of the water tank (82), the input end of the water pump (83) is connected to a water inlet pipe and the water inlet pipe extends into the water tank (82), the output end of the water pump (83) is connected to a liquid delivery pipe (84), a groove is opened inside the vertical plate (2), and a heat exchange tube (87) is buried in the groove, both ends of the heat exchange tube (87) penetrate the top surface of the vertical plate (2) and form a liquid inlet (13) and a liquid outlet (14), the liquid inlet (13) and the heat exchange tube (87) are connected to the vertical plate (2) and the heat exchange tube (87) is ... The liquid delivery pipe (84) is connected to the liquid outlet (14), and the liquid discharge pipe (86) is connected to the water tank (82), and the liquid discharge pipe (86) passes through the water tank (82) and extends into the water tank (82). A heat sink (810) is also fixedly connected to the side of the water tank (82), and a motor (88) is fixedly connected to the inner wall of the liquid cooling chamber (81). The output end of the motor (88) is fixedly connected to a rotating shaft (89), and a plurality of fan blades (811) are fixedly connected to the bottom end of the rotating shaft (89), and the fan blades (811) are arranged on the top of the heat sink (810). A stirring mechanism (9) is arranged in the water tank (82), and a heat transfer component (12) is arranged between the support frame 1 (3) and the heat exchange tube (87).

4. The 5 MWh DC side energy storage container according to claim 3, characterized in that: The stirring mechanism (9) comprises a driving wheel (91) fixedly connected to a rotating shaft (89); a vertical stirring shaft (93) is rotatably connected in the water tank (82); the stirring shaft (93) penetrates the water tank (82), extends to the outside and is fixedly connected to a driven wheel (92); a belt is arranged between the driving wheel (91) and the driven wheel (92); the driving wheel (91) and the driven wheel (92) are connected via a belt transmission; a plurality of stirring rods are fixedly connected to the side wall of the stirring shaft (93); and the plurality of stirring rods are arranged in the water tank (82).

5. The 5 MWh DC side energy storage container according to claim 3 is characterized in that: The inner top surface of the box body (1) is integrally formed with a circuit chamber 1 (85), and the liquid delivery pipe (84) and the liquid discharge pipe (86) are both laid in the circuit chamber 1 (85).

6. The 5 MWh DC side energy storage container according to claim 3, characterized in that: The heat transfer component (12) comprises a heat conduction plate (121) fixedly connected to the side wall of the support frame (3); the heat conduction plate (121) penetrates the side wall of the heat exchange tube (87) and extends into the interior of the heat exchange tube (87); and a sealing ring (122) is provided on the heat exchange tube (87).

7. The 5 MWh DC side energy storage container according to claim 1, characterized in that: The air supply assembly comprises a storage tank (102) fixedly connected to a fire fighting room (101); the inner wall of the box body (1) is integrally formed with a second circuit chamber (104); an air supply pipe (105) is arranged in the second circuit chamber (104); a connecting pipe is provided between the air supply pipe (105) and the storage tank (102); a solenoid valve (103) is installed on the connecting pipe; the air supply pipe (105) is connected to a plurality of guide frames (106); a controller (108) is arranged in the fire fighting room (101); the controller (108) is electrically connected to the solenoid valve (103), a temperature sensor (15), and a smoke sensor (16).

8. The 5 MWh DC side energy storage container according to claim 6, characterized in that: The heat exchange tube (87) is bent multiple times, and a plurality of heat conduction plates (121) are provided on the side wall of the support frame (3), and the plurality of heat conduction plates (121) are equidistantly distributed.

9. The 5 MWh DC side energy storage container according to claim 6, characterized in that: The heat conducting plates (121) of the support frame 1 (3) on both sides of the vertical plate (2) are arranged in a staggered manner.

10. The 5 MWh DC side energy storage container according to claim 1, characterized in that: Four air outlet grooves (107) are provided, and the air outlet grooves (107) are rectangular grooves.

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