Fire preventing and extinguishing device special for energy storage cabinet battery pack

Abstract

The utility model discloses a special fire preventing and extinguishing device for a battery pack of an energy storage cabinet, which comprises a medicament bottle valve group which comprises a medicament bottle body and a valve body assembly arranged at a bottle opening of the medicament bottle body; the valve body assembly comprises a bottle head valve and an electromagnetic pilot valve which are arranged at a bottle opening of the medicament bottle body; a plurality of spray heads are arranged on the medicament release pipeline; the bottle head valve comprises a valve body, a medicament outlet formed in the valve body, an output micropore, a piston, a reset spring arranged in the valve body and a valve body upper cavity formed between the reset spring and the inner wall of the valve body. The electromagnetic pilot valve comprises an electromagnetic coil, a pilot valve insertion core inserted in the electromagnetic coil, a Horsman plug and an electromagnetic pilot valve body. According to the special fire preventing and extinguishing device for the battery pack of the energy storage cabinet, a detection part does not need to be additionally arranged, and when high-temperature abnormity is detected by utilizing a BMS management system temperature detection function of the storage battery, a fire extinguishing agent in the fire preventing and extinguishing device is sprayed into the energy storage cabinet, so that automatic fire extinguishing is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to a special fire extinguishing device for a battery pack of an energy storage cabinet. Background Art

[0002] With the rapid development and application of energy, energy storage cabinets are increasingly used in power systems, transportation, new energy power generation systems, emergency backup power supplies and other fields. Especially in new energy power generation systems, energy storage cabinets, as buffer components between new energy and traditional energy, are of great significance for achieving large-scale access and consumption of new energy. At present, battery packs are mostly monitored and managed by BMS management systems. The BMS system has built-in temperature detection and monitoring functions, and can output over-temperature warning signals.

[0003] At present, energy storage cabinets mostly use lithium batteries to store electrical energy. The fire extinguishing devices for energy storage cabinets are mostly composed of detection parts, control systems, agent storage and release parts, and are supplemented by other functional accessories, such as manual start, feedback signals, etc. The existing energy storage cabinet fire extinguishing devices have the following disadvantages:

[0004] 1. The detection part of the fire extinguishing device can only detect the external ambient temperature of the battery, and has a lag in detecting over-temperature inside the battery. It will not start until a high-temperature open flame appears in the battery pack. At this time, the lithium battery has reacted violently, and the fire extinguishing effect is not ideal;

[0005] 2. The energy storage cabinet takes up a lot of space on site because batteries and other components take up a lot of space. The on-site space is generally small, and it is not easy to install the fire extinguishing device when there are many functional components.

[0006] Therefore, how to provide a special fire prevention and extinguishing device suitable for energy storage cabinet battery packs is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0007] In view of this, the purpose of the utility model is to provide a fire extinguishing device dedicated to a battery pack of an energy storage cabinet to address the deficiencies of the prior art, which includes:

[0008] A medicine bottle valve assembly, comprising a medicine bottle body and a valve body assembly arranged at the bottle mouth of the medicine bottle body; the valve body assembly comprises a bottle head valve and an electromagnetic pilot valve arranged at the bottle mouth of the medicine bottle body;

[0009] A medicine release pipeline, on which a plurality of nozzles are arranged;

[0010] The bottle head valve comprises a valve body, a medicine outlet provided on the valve body, an output micropore, a piston, a return spring arranged inside the valve body, and an upper cavity of the valve body formed between the return spring and the inner wall of the valve body; the medicine outlet is communicated with the medicine release pipeline; the output micropore is arranged at the output end of the medicine bottle body; the return spring is sleeved on the upper part of the piston; the piston comprises a first working position against the output micropore and a second working position away from the output micropore; when the piston is located at the second working position, the output micropore is communicated with the medicine outlet;

[0011] The electromagnetic pilot valve includes an electromagnetic coil, a pilot valve insert inserted inside the electromagnetic coil, a Horsman plug and an electromagnetic pilot valve body. The electromagnetic coil is electrically connected to the BMS management system through the Horsman plug. After the electromagnetic coil receives an electrical signal, the pilot valve insert pops out, and the electromagnetic pilot valve body is connected to the upper cavity of the valve body.

[0012] In certain embodiments, in the energy storage cabinet battery pack dedicated fire protection and extinguishing device, the bottle head valve also includes a mechanical start button.

[0013] In certain embodiments, in the energy storage cabinet battery pack dedicated fire protection device, the bottle head valve also includes a release feedback device, which is used to detect whether the fire extinguishing agent is released in the agent release pipeline.

[0014] In certain embodiments, in the energy storage cabinet battery pack dedicated fire extinguishing device, the fire extinguishing device also includes a pressure gauge, which is used to detect the internal pressure of the medicine bottle.

[0015] In certain embodiments, in the energy storage cabinet battery pack dedicated fire prevention and extinguishing device, the agent release pipeline is arranged on the inner wall of the upper space of the energy storage cabinet battery pack.

[0016] In certain embodiments, in the energy storage cabinet battery pack dedicated fire protection and extinguishing device, the pressure value in the upper cavity of the valve body is 1.6±0.1 MPa.

[0017] In certain embodiments, in the energy storage cabinet battery pack-specific fire extinguishing device, the pressure value inside the agent bottle is 1.6±0.1 MPa.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model discloses a fire prevention and extinguishing device dedicated to a battery pack in an energy storage cabinet. No additional detection components are required. When the temperature detection function of the BMS management system of the battery detects that the battery is abnormally high in temperature, an over-temperature warning signal is output. After the electromagnetic pilot valve receives the warning signal, the electromagnetic pilot valve body is connected to the upper cavity of the valve body, the pressure in the upper cavity of the valve body is reduced, and there is a pressure difference between the agent bottle body and the valve body assembly. The internal pressure of the agent bottle body presses the piston to squeeze the reset spring, so that the piston is in the second working position, and the output micropore is connected to the agent outlet. The fire extinguishing agent passes through the output micropore, the agent outlet and the agent release pipeline, and is finally released to the inside of the energy storage cabinet through the nozzle, thereby realizing automatic fire extinguishing.

[0020] 2. The utility model discloses a fire extinguishing device specially used for battery packs in energy storage cabinets. The fire extinguishing agent is perfluorohexanone, which has a boiling point of 49°C under normal pressure and absorbs a large amount of heat when vaporized. It has excellent cooling and suffocation functions and high fire extinguishing efficiency.

[0021] 3. The utility model discloses a fire prevention and extinguishing device specially used for a battery pack of an energy storage cabinet. It has low manufacturing cost, fewer components, occupies less space, and is easy to install. Since the device has fewer accessories and the accessories are small in size, it is suitable for the internal space of the battery room of an energy storage station. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of the fire protection device dedicated to the battery pack of the energy storage cabinet described in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the valve body assembly in the fire protection and extinguishing device dedicated to the energy storage cabinet battery pack described in the utility model.

[0024] In the figure: 1- electromagnetic pilot valve, 2- bottle head valve, 3- manual start button, 4- release feedback device, 5- nozzle, 6- medicine release pipeline, 7- pressure gauge, 8- medicine bottle; 101- Horsman plug, 102- electromagnetic coil, 103- pilot valve insert, 104- electromagnetic pilot valve body, 201- mechanical start button, 202- valve body upper cavity, 203- return spring, 204- piston, 205- output micropore, 206- medicine outlet, 207- safety pressure relief valve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention.

[0026] like Figure 1 and Figure 2 As shown, a fire extinguishing device dedicated to a battery pack of an energy storage cabinet comprises:

[0027] A medicine bottle valve assembly, comprising a medicine bottle body 8 and a valve body assembly arranged at the mouth of the medicine bottle body 8; the valve body assembly comprises a bottle head valve 2 and an electromagnetic pilot valve 1 arranged at the mouth of the medicine bottle body 8;

[0028] A medicine release pipeline 6, on which a plurality of nozzles 5 are arranged;

[0029] The bottle head valve 2 includes a valve body, a medicine outlet 206 provided on the valve body, an output micropore 205, a piston 204, a return spring 203 arranged inside the valve body, and a valve body upper cavity 202 formed between the return spring 203 and the inner wall of the valve body; the medicine outlet 206 is communicated with the medicine release pipeline 6; the output micropore 205 is arranged at the output end of the medicine bottle 8; the return spring 203 is sleeved on the upper part of the piston 204; the piston 204 includes a first working position against the output micropore 205 and a second working position away from the output micropore 205; when the piston 204 is located at the second working position, the output micropore 205 is communicated with the medicine outlet 206;

[0030] The electromagnetic pilot valve 1 includes an electromagnetic coil 102, a pilot valve insert 103 inserted inside the electromagnetic coil 102, a Horsman plug 101 and an electromagnetic pilot valve body 1. The electromagnetic coil 102 is electrically connected to the BMS management system through the Horsman plug 101; after the electromagnetic coil 102 receives an electrical signal, the pilot valve insert 103 pops out, and the electromagnetic pilot valve body 104 is connected to the valve body upper cavity 202.

[0031] The utility model discloses a special fire extinguishing device for a battery pack of an energy storage cabinet. No additional detection components are required. The BMS management system is connected to the electromagnetic coil 102 through the Horsman plug 101. When the temperature detection function of the BMS management system detects that the battery is abnormally high in temperature, the BMS management system outputs a set of DC24V voltage signals to the Horsman plug 101. After receiving the electrical signal, the electromagnetic coil 102 pops up the pilot valve plug 103, and the electromagnetic pilot valve body 104 is connected to the upper cavity 202 of the valve body. The gas quickly flows out of the electromagnetic pilot valve. The liquid is discharged from the body 104, and the pressure in the upper cavity 202 of the valve body is reduced by 50% in a short time (less than 1S). A pressure difference is formed between the inside of the agent bottle 8 and the upper cavity 202 of the valve body. Under the action of pressure, the piston 204 in the bottle head valve 2 moves upward to squeeze the return spring 203, and the piston 204 moves to the second working position. The agent outlet 206 is connected to the output micropore 205. The fire extinguishing agent is transported to the protected area through the micropore, the agent outlet 206 and the agent release pipeline 6, and is sprayed through the agent nozzle 5 to complete the entire fire extinguishing process.

[0032] In the above solution, the bottle head valve 2 also includes a mechanical start button 201.

[0033] When the on-site personnel find that the protection area is abnormal, but the device has not started automatically, in order to avoid the expansion of the fire, the personnel can manually start the fire extinguishing device through the mechanical start button 201 to protect the fire in the early stage and reduce losses. The specific operation is to quickly pull out the safety pin on the mechanical start button 201, use a force of not less than 75N to press the start button, and the fire extinguishing device will start.

[0034] In the above solution, the bottle head valve 2 also includes a release feedback device 4, which is used to detect whether the fire extinguishing agent is released in the agent release pipeline 6.

[0035] While the fire extinguishing agent is being transported through the agent release pipeline 6, the release feedback device 4 connected to the agent release pipeline 6 through a three-way connection generates a passive switch signal, which activates the sound and light alarm or other linkage devices.

[0036] In the above solution, the fire protection and extinguishing device further includes a pressure gauge 7 for detecting the internal pressure of the medicine bottle 8 .

[0037] The storage pressure inside the medicine bottle 8 is the same as that in the upper cavity 202 of the valve body, both of which are 1.6±0.1 MPa (the medium is high-purity nitrogen), and the pressure of the bottle group can be checked through the pressure gauge 7.

[0038] In the above solution, the drug release pipeline 6 is arranged on the inner wall of the upper space of the battery pack of the energy storage cabinet.

[0039] In the above solution, the bottle head valve 2 also includes a safety pressure relief valve 207

[0040] In the above solution, the valve body assembly also includes a manual start button 3.

[0041] In the above solution, the pressure value in the upper cavity 202 of the valve body is 1.6±0.1 MPa.

[0042] In the above solution, the pressure value in the medicine bottle 8 is 1.6±0.1 MPa.

[0043] Device installation:

[0044] 1. Fix the medicine bottle. The medicine bottle can be fixed inside or outside the energy storage cabinet, depending on the internal space of the energy storage cabinet, and it is preferred to be installed inside the energy storage cabinet;

[0045] 2. Fix the agent release pipeline 6 and the nozzle 5. The agent release pipeline 6 is fixed in the upper space inside the battery pack of the energy storage cabinet, and the nozzle 5 faces the protected battery pack and is evenly distributed in the protection area;

[0046] 3. Connect the lines. Use a three-way connection to connect the medicine bottle, the release feedback device 4 and the medicine release pipeline 6, and fix the medicine release pipeline 6;

[0047] 4. Simulate the startup test. After the device is assembled normally, first remove the Horsman plug 101 on the solenoid pilot valve 1, and debug the energy storage cabinet BMS system to output an abnormal electrical signal. At this time, the indicator light on the Horsman plug 101 lights up, proving that the device's electric startup function is normal;

[0048] 5. Restore the device after the simulation startup is completed.

[0049] Startup method:

[0050] 1. Automatic start: When the energy storage cabinet BMS management system monitors that the battery pack has an abnormally high temperature, the BMS management system outputs a set of DC24V voltage signals to the Horsman plug 101. At this time, the solenoid pilot valve 1 starts the bottle head valve 2, and the medicine in the medicine bottle 8 is discharged from the medicine outlet 206, the medicine release pipeline 6, and the nozzle 5 to the protection area for targeted protection.

[0051] 2. Mechanical start: When the on-site personnel find that the protection area is abnormal, but the device has not started automatically, in order to avoid the expansion of the fire, the personnel can manually start the fire extinguishing device through the mechanical start button 201 to protect in the early stage of the fire and reduce losses. The specific operation is to quickly pull out the safety pin on the mechanical start button 201, use a force of not less than 75N to press the start button, and the device will start.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A fire extinguishing device for energy storage cabinet battery pack, characterized in that: It includes: A medicine bottle valve assembly, comprising a medicine bottle body (8) and a valve body assembly arranged at the mouth of the medicine bottle body (8); the valve body assembly comprises a bottle head valve (2) and an electromagnetic pilot valve (1) arranged at the mouth of the medicine bottle body (8); A medicine release pipeline (6) on which a plurality of nozzles (5) are arranged; The bottle head valve (2) comprises a valve body, a medicine outlet (206) provided on the valve body, an output micropore (205), a piston (204), a return spring (203) arranged inside the valve body, and a valve body upper cavity (202) formed between the return spring (203) and the inner wall of the valve body; the medicine outlet (206) is communicated with the medicine release pipeline (6); the output micropore (205) is arranged at the output end of the medicine bottle body (8); the return spring (203) is sleeved on the upper part of the piston (204); the piston (204) comprises a first working position against the output micropore (205) and a second working position away from the output micropore (205); when the piston (204) is located at the second working position, the output micropore (205) is communicated with the medicine outlet (206); The electromagnetic pilot valve (1) comprises an electromagnetic coil (102), a pilot valve insert (103) inserted in the electromagnetic coil (102), a Horsman plug (101) and an electromagnetic pilot valve body (104); the electromagnetic coil (102) is electrically connected to a BMS management system via the Horsman plug (101); after the electromagnetic coil (102) receives an electrical signal, the pilot valve insert (103) pops out, and the electromagnetic pilot valve body (104) is connected to the valve body upper chamber (202).

2. The fire extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The bottle head valve (2) further comprises a mechanical start button (201).

3. The fire extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The bottle head valve (2) also includes a release feedback device (4) which is used to detect whether the fire extinguishing agent is released in the agent release pipeline (6).

4. The fire extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The fire extinguishing device also includes a pressure gauge (7) for detecting the internal pressure of the medicine bottle (8).

5. The fire protection and extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The medicine release pipeline (6) is arranged on the inner wall of the upper space of the battery pack of the energy storage cabinet.

6. The fire extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The pressure value in the upper cavity (202) of the valve body is 1.6±0.1 MPa.

7. The fire protection and extinguishing device for energy storage cabinet battery pack according to claim 1 is characterized in that: The pressure value in the medicine bottle (8) is 1.6±0.1 MPa.

Images