CN112618997A - Liquid-cooling fire fighting system and method of battery energy storage system - Google Patents
Liquid-cooling fire fighting system and method of battery energy storage system Download PDFInfo
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- CN112618997A CN112618997A CN202011612812.3A CN202011612812A CN112618997A CN 112618997 A CN112618997 A CN 112618997A CN 202011612812 A CN202011612812 A CN 202011612812A CN 112618997 A CN112618997 A CN 112618997A
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- 238000001816 cooling Methods 0.000 title claims abstract description 105
- 238000004146 energy storage Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 114
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 78
- 230000002829 reductive effect Effects 0.000 claims abstract description 16
- 239000003507 refrigerant Substances 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000003112 inhibitor Substances 0.000 claims description 39
- 230000009471 action Effects 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the field of energy storage systems, and provides a liquid cooling fire fighting system and a liquid cooling fire fighting method of a battery energy storage system. The liquid cooling fire fighting system comprises a liquid cooling system and a fire fighting system, wherein the liquid cooling system comprises a liquid cooling pipe and a pump machine for circularly pumping refrigerating fluid into the liquid cooling pipe; the liquid cooling pipe is made of a heat sensitive material, and can soften and break under the high-temperature condition when the battery is out of control due to heat, so that the pressure of the refrigerant liquid inside the liquid cooling pipe is reduced due to outflow of the refrigerant liquid; the fire fighting system comprises a controller, a pressure detector and a fire fighting agent storage device, wherein the controller is used for controlling the fire fighting agent storage device to release the fire fighting agent when the pressure detector detects that the hydraulic pressure in the liquid cooling pipe is reduced to a preset threshold value. The liquid cooling system and the fire fighting system are combined, the fire fighting system is triggered through the pressure drop in the liquid cooling pipe when the battery is out of control due to heat, the fire fighting agent is released circularly by utilizing the pipeline of the liquid cooling system, the fire hazard is thoroughly solved, and the cost is greatly reduced.
Description
Technical Field
The invention relates to the field of energy storage systems, in particular to a liquid cooling fire fighting system of a battery energy storage system and a fire fighting method of the battery energy storage system.
Background
The energy storage system is a new energy device which stores a large number of energy storage lithium batteries in a container or a cabinet and has the functions of peak clipping, valley filling, frequency modulation and the like. The conventional energy storage system usually adopts equipment such as an air conditioner or a fan and the like to dissipate heat of a battery through forced air cooling, the air cooling mode has poor refrigeration effect and high risk of thermal runaway of the battery, and when fire-fighting measures are taken, the air conditioner or the fan needs to be linked to perform shutdown action before a fire-fighting agent is sprayed, so that the structural sealing property is influenced, and the fire-fighting inhibition time is shortened; and the fan can not be static immediately after the outage, still can rotate a period of time, and this period of time can influence the diffusion effect of gaseous fire control agent, leads to the fire control effect not good.
At present, most energy storage systems adopt a gas fire-fighting means, adopt a mode of combining automatic control and manual control, and possibly cause failure of a control loop when an extreme fire condition occurs, and fire-fighting agents cannot be normally released, so that fire spreading is uncontrollable. In addition, the existing energy storage system needs a large amount of detection equipment and complex fire-fighting agent pipelines and spray heads for fire protection (such as fire detection and fire treatment by taking a battery module as a unit), and the cost is very high.
Disclosure of Invention
The invention aims to provide a liquid cooling fire fighting system and a fire fighting method of a battery energy storage system, and aims to solve the problems of poor fire fighting effect and high cost of the energy storage fire fighting system.
In order to achieve the above object, an embodiment of the present invention provides a liquid cooling fire protection system of a battery energy storage system, including a liquid cooling system and a fire protection system, where the liquid cooling system includes a liquid cooling pipe and a pump machine for pumping a refrigerant liquid into the liquid cooling pipe in a circulating manner; the liquid cooling pipe is made of a heat sensitive material and is used for softening and breaking under the condition of softening temperature so that the refrigerant liquid flows out of the broken opening of the liquid cooling pipe to reduce the hydraulic pressure in the liquid cooling pipe; the fire fighting system comprises a controller, a pressure detector and a fire fighting agent storage device, wherein the controller is in signal connection with the pressure detector and the fire fighting agent storage device, and a fire fighting agent release channel of the fire fighting agent storage device is communicated with the interior of the liquid cooling pipe; the pressure detector is used for detecting the hydraulic pressure in the liquid cooling pipe in real time; the controller is used for controlling the fire-fighting agent storage device to release the fire-fighting agent when the pressure detector detects that the hydraulic pressure in the liquid cooling pipe is reduced to a preset threshold value.
Optionally, the liquid cooling system further includes a liquid cooling plate, the liquid cooling pipe is close to the liquid cooling plate, and the liquid cooling plate is disposed between the battery cores or between the battery shell and the battery cores.
Optionally, the fire-fighting agent comprises a gaseous fire-fighting agent and an inhibitor, and the fire-fighting agent storage device comprises a fire-fighting agent bottle, an inhibitor bottle and a solenoid valve group; the controller is in signal connection with the battery valve group, and controls the fire extinguishing agent bottle to release the gas fire extinguishing agent and the inhibitor bottle to release the inhibitor through the battery valve group.
Optionally, the battery valve group comprises a first electromagnetic valve and a second electromagnetic valve; the first electromagnetic valve is used as a switch of the fire extinguishing agent bottle and used for opening the fire extinguishing agent bottle according to a first control instruction sent by the controller; the second electromagnetic valve is used as a switch of the inhibitor bottle and used for opening the inhibitor bottle according to a second control instruction sent by the controller.
Optionally, the working port of the first electromagnetic valve and the working port of the second electromagnetic valve are both communicated with the liquid cooling pipe.
Optionally, the inhibitor contained in the inhibitor bottle is insulating liquid with the boiling point higher than 200 ℃.
Optionally, the softening temperature of the liquid cooling pipe is 90-180 ℃.
The embodiment of the invention also provides a fire fighting method of the battery energy storage system, which is based on the liquid cooling fire fighting system of the battery energy storage system, and the method comprises the following steps:
the pressure detector detects the hydraulic pressure in the liquid cooling pipe in real time and feeds the hydraulic pressure back to the controller;
the controller controls a fire-fighting agent storage device to release fire-fighting agent when the hydraulic pressure value is determined to be reduced to a preset threshold value, and the fire-fighting agent flows through the liquid-cooled pipe under the pumping action of a pump and is sprayed out of a broken opening of the liquid-cooled pipe;
wherein under the condition that the battery core temperature of battery reaches the softening temperature of liquid-cooled tube, the liquid-cooled tube softens and breaks and causes the refrigerant fluid to flow out from the break opening of the liquid-cooled tube, resulting in the hydraulic pressure in the liquid-cooled tube to reduce.
Further, the controller controls the fire-fighting agent storage device to release the fire-fighting agent upon determining that the hydraulic pressure value decreases to a preset threshold, including:
the controller sends a first control instruction to the first electromagnetic valve, a working channel of the first electromagnetic valve is opened, and the fire extinguishing agent bottle starts to release the gaseous fire extinguishing agent;
and after the preset time, the controller sends a second control command to the second electromagnetic valve, the working channel of the second electromagnetic valve is opened, and the inhibitor bottle starts to release the inhibitor.
Further, the method further comprises: and the controller sends a fire early warning signal to an upper-level control system when the hydraulic pressure value is determined to be reduced to a preset threshold value.
The liquid cooling fire fighting system and the fire fighting method of the battery energy storage system combine the liquid cooling system and the fire fighting system, and the liquid cooling system is used for cooling the battery in a liquid cooling mode when the battery works normally; when the battery is out of control due to heat, the fire-fighting system is triggered through the pressure drop in the liquid cooling pipe, and the fire-fighting agent is released circularly by using the pipeline of the liquid cooling system, so that effective fire extinguishing and long-term inhibition on the battery fire are realized, and the problem of fire hazard is thoroughly solved. In addition, the fire fighting system does not need detection equipment and complex fire fighting agent pipelines, and the cost is greatly reduced.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic diagram of a liquid-cooled fire protection system of a battery energy storage system according to an embodiment of the invention;
fig. 2 is a flowchart of a fire fighting method of the battery energy storage system according to the embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance. "signal connection" as used herein is intended to mean a signal connection between two components, such as a control signal and a feedback signal; "connected" may be a direct connection between two elements or an indirect connection through a third element.
Fig. 1 is a schematic view of a liquid-cooled fire protection system of a battery energy storage system according to an embodiment of the invention. As shown in fig. 1, this embodiment provides a liquid cooling fire extinguishing systems of battery energy storage system, including liquid cooling system and fire extinguishing systems, the liquid cooling system include liquid cooling pipe, liquid cooling board and be used for to the pump machine of liquid cooling intraductal circulation pump sending refrigeration liquid, the liquid cooling pipe is pressed close to the setting of liquid cooling board, the liquid cooling board sets up between the electric core of battery or between the casing and the electric core of battery. The liquid cooling pipe is made of a heat sensitive material, and can soften and break under the high-temperature condition when the battery is out of control due to heat, so that the refrigerant liquid flows out from the break of the liquid cooling pipe to reduce the internal hydraulic pressure of the liquid cooling pipe. The fire fighting system comprises a controller, a pressure detector and a fire fighting agent storage device, wherein the controller is in signal connection with the pressure detector and the fire fighting agent storage device, and a fire fighting agent release passage of the fire fighting agent storage device is communicated with the interior of the liquid cooling pipe. The pressure detector is used for detecting the hydraulic pressure in the liquid cooling pipe in real time. The controller is used for controlling the fire-fighting agent storage device to release the fire-fighting agent when the pressure detector detects that the hydraulic pressure in the liquid cooling pipe is reduced to a preset threshold value. Specifically, the fire extinguishing agent includes gaseous fire extinguishing agent and inhibitor, fire extinguishing agent storage device includes fire extinguishing agent bottle, inhibitor bottle and electromagnetism valves, the controller with battery valves signal connection, through battery valves control fire extinguishing agent bottle release gas fire extinguishing agent and control inhibitor bottle release inhibitor.
In this embodiment, the battery valves include a first solenoid valve and a second solenoid valve, and the first solenoid valve is installed at the release mouth of fire extinguishing agent bottle, and the second solenoid valve is installed at the release mouth of inhibitor bottle. The first electromagnetic valve is used as a switch of the fire extinguishing agent bottle and used for opening the fire extinguishing agent bottle according to a first control instruction sent by the controller. The second electromagnetic valve is used as a switch of the inhibitor bottle and used for opening the inhibitor bottle according to a second control instruction sent by the controller.
Preferably, the inhibitor contained in the inhibitor bottle is insulating liquid with the boiling point higher than 200 ℃, and the effect of inhibiting the re-ignition is better when the specific heat capacity of the inhibitor is larger. The working port of the first electromagnetic valve and the working port of the second electromagnetic valve are communicated with the liquid cooling pipe, namely the outlet of the fire extinguishing agent bottle and the outlet of the inhibitor bottle are communicated with the liquid cooling pipe, so that the gaseous fire extinguishing agent released by the fire extinguishing agent bottle and the liquid inhibitor released by the inhibitor bottle can circulate in the liquid cooling pipe.
Preferably, the softening temperature of the liquid cooling pipe is 90-180 ℃. Under the normal condition, the electric core temperature of battery is no longer than 50 degrees, and when the battery took place the thermal runaway, electric core temperature can reach 90 ℃ and surpass 90 ℃ even, and the high temperature that electric core produced passes through the liquid cooling board and conducts to the liquid cooling pipe, and the liquid cooling pipe softening at high temperature position breaks and forms the horn mouth, and the inside refrigerant outflow of liquid cooling pipe, intraductal hydraulic pressure force reduce. The pressure detector detects that the hydraulic pressure is reduced and feeds back the hydraulic pressure to the controller, when the controller judges that the hydraulic pressure is reduced to a preset threshold value, the controller sends an instruction to control the first electromagnetic valve and the second electromagnetic valve to be opened successively, and the gaseous extinguishing agent flows along the liquid cooling pipe and is sprayed out from the bell mouth to cool the battery and extinguish open fire; then, the inhibitor bottle releases the liquid inhibitor, and the liquid inhibitor submerges the battery, so that the battery is completely isolated from air and absorbs heat generated by the battery, and the battery is ensured not to reignite for a long time and not to diffuse due to thermal runaway.
According to the liquid cooling fire fighting system of the battery energy storage system, the liquid cooling system and the fire fighting system are combined, and the liquid cooling system is used for cooling the battery in a liquid cooling mode when the battery works normally; when the battery is out of control due to heat, the fire-fighting system is triggered through the pressure drop in the liquid cooling pipe, and the fire-fighting agent is released circularly by using the pipeline of the liquid cooling system, so that effective fire extinguishing and long-term inhibition on the battery fire are realized, and the problem of fire hazard is thoroughly solved. In addition, the fire fighting system does not need detection equipment and complex fire fighting agent pipelines, and the cost is greatly reduced.
Fig. 2 is a flowchart of a fire fighting method of the battery energy storage system according to the embodiment of the invention. As shown in fig. 2, this embodiment provides a fire fighting method for a battery energy storage system, where the liquid cooling fire fighting system based on the battery energy storage system includes:
and S1, softening and breaking the liquid cooling pipe under the high-temperature condition when the battery is in thermal runaway so as to enable the refrigerant to flow out.
When the battery works normally, the refrigerant in the liquid cooling pipe circularly flows for refrigeration to cool the battery. When the battery takes place thermal runaway, electric core temperature can reach 90 ℃ and exceed 90 ℃ even, and the high temperature that electric core produced passes through the liquid cooling board and conducts to the liquid cooling pipe, and the liquid cooling pipe softening at high temperature position breaks and forms the horn mouth, and the inside refrigerant of liquid cooling pipe flows, and intraductal hydraulic pressure reduces.
And S2, when the pressure detector detects that the hydraulic pressure in the liquid cooling pipe changes, the hydraulic pressure value is fed back to the controller.
S3, the controller controls the fire-fighting agent storage device to release the fire-fighting agent when the hydraulic pressure value is determined to be reduced to a preset threshold value.
Specifically, the controller sends a first control instruction to a first electromagnetic valve, a working channel of the first electromagnetic valve is opened, and a fire extinguishing agent bottle starts to release a gaseous fire extinguishing agent; after a preset time (e.g., after 30 seconds), the controller sends a second control command to the second solenoid valve, the working channel of the second solenoid valve is opened, and the inhibitor bottle starts to release the inhibitor.
And S4, the fire-fighting agent flows through the liquid-cooled pipe under the pumping action of the pump machine and is sprayed out of the broken opening of the liquid-cooled pipe.
Because the working opening of the first electromagnetic valve and the working opening of the second electromagnetic valve are communicated with the liquid cooling pipe, when the fire extinguishing agent bottle and the inhibitor bottle are opened, the gaseous fire extinguishing agent released by the fire extinguishing agent bottle and the liquid inhibitor released by the inhibitor bottle can circulate in the liquid cooling pipe and are sprayed out through a broken opening (bell mouth) of the liquid cooling pipe. The fire extinguishing agent bottle is opened firstly, and the gaseous fire extinguishing agent flows along the liquid cooling pipe and is sprayed out from the bell mouth to cool the battery and extinguish open fire; and then the inhibitor bottle is opened, and the released liquid inhibitor submerges the battery, so that the battery is completely isolated from air and absorbs heat generated by the battery, and the battery is ensured not to reignite for a long time and not to diffuse due to thermal runaway.
In a preferred embodiment, the controller sends a fire early warning signal to the superior control system when determining that the hydraulic pressure value is reduced to a preset threshold value, so as to facilitate the superior control system to make a fire fighting decision.
According to the liquid cooling fire fighting method for the battery energy storage system, the fire fighting system is triggered through the pressure drop in the liquid cooling pipe when the battery is out of control due to thermal runaway, the fire fighting agent is released circularly through the pipeline of the liquid cooling system, effective fire extinguishing and long-term suppression on battery fire are achieved, and the problem of fire hazard is thoroughly solved.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
Claims (10)
1. A liquid cooling fire fighting system of a battery energy storage system comprises a liquid cooling system and a fire fighting system, and is characterized in that the liquid cooling system comprises a liquid cooling pipe and a pump machine for circularly pumping refrigerating fluid into the liquid cooling pipe;
the liquid cooling pipe is made of a heat sensitive material and is used for softening and breaking under the condition of softening temperature so that the refrigerant liquid flows out of the broken opening of the liquid cooling pipe to reduce the hydraulic pressure in the liquid cooling pipe;
the fire fighting system comprises a controller, a pressure detector and a fire fighting agent storage device, wherein the controller is in signal connection with the pressure detector and the fire fighting agent storage device, and a fire fighting agent release channel of the fire fighting agent storage device is communicated with the interior of the liquid cooling pipe;
the pressure detector is used for detecting the hydraulic pressure in the liquid cooling pipe in real time;
the controller is used for controlling the fire-fighting agent storage device to release the fire-fighting agent when the pressure detector detects that the hydraulic pressure in the liquid cooling pipe is reduced to a preset threshold value.
2. The liquid-cooled fire protection system of a battery energy storage system of claim 1, wherein the liquid-cooled system further comprises a liquid-cooled plate, the liquid-cooled tube is arranged proximate to the liquid-cooled plate, and the liquid-cooled plate is arranged between the cells of the battery or between the housing and the cells of the battery.
3. The liquid-cooled fire protection system of a battery energy storage system of claim 1, wherein the fire suppressant comprises a gaseous fire suppressant and a suppressant, and the fire suppressant storage device comprises a fire suppressant bottle, a suppressant bottle, and a solenoid valve pack;
the controller is in signal connection with the battery valve group, and controls the fire extinguishing agent bottle to release the gas fire extinguishing agent and the inhibitor bottle to release the inhibitor through the battery valve group.
4. The liquid-cooled fire protection system of a battery energy storage system of claim 3, wherein the battery valve pack comprises a first solenoid valve and a second solenoid valve;
the first electromagnetic valve is used as a switch of the fire extinguishing agent bottle and used for opening the fire extinguishing agent bottle according to a first control instruction sent by the controller;
the second electromagnetic valve is used as a switch of the inhibitor bottle and used for opening the inhibitor bottle according to a second control instruction sent by the controller.
5. The liquid-cooled fire protection system of a battery energy storage system of claim 4, wherein the working port of the first solenoid valve and the working port of the second solenoid valve are both in communication with the liquid-cooled pipe.
6. The liquid-cooled fire protection system of a battery energy storage system of claim 4, wherein the suppressant contained in the suppressant bottle is an insulating liquid having a boiling point higher than 200 ℃.
7. The liquid-cooled fire protection system of a battery energy storage system of claim 1, wherein the softening temperature of the liquid-cooled pipe is 90-180 ℃.
8. A fire fighting method for a battery energy storage system, which is based on the liquid cooling fire fighting system for the battery energy storage system of any one of claims 1 to 7, and is characterized in that the method comprises the following steps:
the pressure detector detects the hydraulic pressure in the liquid cooling pipe in real time and feeds the hydraulic pressure back to the controller;
the controller controls a fire-fighting agent storage device to release fire-fighting agent when the hydraulic pressure value is determined to be reduced to a preset threshold value, and the fire-fighting agent flows through the liquid-cooled pipe under the pumping action of a pump and is sprayed out of a broken opening of the liquid-cooled pipe;
wherein under the condition that the battery core temperature of battery reaches the softening temperature of liquid-cooled tube, the liquid-cooled tube softens and breaks and causes the refrigerant fluid to flow out from the break opening of the liquid-cooled tube, resulting in the hydraulic pressure in the liquid-cooled tube to reduce.
9. The method of claim 8, wherein the controller controls a fire suppressant storage device to release fire suppressant upon determining that the hydraulic pressure value has decreased to a preset threshold, comprising:
the controller sends a first control instruction to the first electromagnetic valve, a working channel of the first electromagnetic valve is opened, and the fire extinguishing agent bottle starts to release the gaseous fire extinguishing agent;
and after the preset time, the controller sends a second control command to the second electromagnetic valve, the working channel of the second electromagnetic valve is opened, and the inhibitor bottle starts to release the inhibitor.
10. A method of fighting fire in a battery energy storage system according to claim 8, the method further comprising:
and the controller sends a fire early warning signal to an upper-level control system when the hydraulic pressure value is determined to be reduced to a preset threshold value.
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| CN202011612812.3A CN112618997A (en) | 2020-12-30 | 2020-12-30 | Liquid-cooling fire fighting system and method of battery energy storage system |
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| CN202011612812.3A CN112618997A (en) | 2020-12-30 | 2020-12-30 | Liquid-cooling fire fighting system and method of battery energy storage system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113350719A (en) * | 2021-06-23 | 2021-09-07 | 珠海智慧联合科技有限公司 | Fire extinguishing device for extinguishing lithium battery fire by intermittently spraying fire extinguishing agent |
| CN113577603A (en) * | 2021-07-29 | 2021-11-02 | 广东电网有限责任公司 | Fire-fighting and cooling integrated system and control method thereof |
| CN114768147A (en) * | 2022-04-29 | 2022-07-22 | 江苏大学 | Container energy storage power station with dual-drive fire extinguishing device |
| CN115337577A (en) * | 2022-08-19 | 2022-11-15 | 江苏天合储能有限公司 | Liquid cooling cabinet fire fighting method and system and liquid cooling cabinet |
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Application publication date: 20210409 |