CN213941929U - Multiple protection fire extinguishing system of lithium battery energy storage system - Google Patents
Multiple protection fire extinguishing system of lithium battery energy storage system Download PDFInfo
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- CN213941929U CN213941929U CN202022479131.6U CN202022479131U CN213941929U CN 213941929 U CN213941929 U CN 213941929U CN 202022479131 U CN202022479131 U CN 202022479131U CN 213941929 U CN213941929 U CN 213941929U
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- 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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Abstract
The utility model discloses a multiple protection fire extinguishing system of lithium cell energy storage system, including the water tank, the feed pipe, a plurality of basins, the drain pipe, a temperature sensor and treater, the basin sets up on the lithium cell, on a temperature sensor was provided with the lithium cell, be provided with the through-hole between basin and the lithium cell, be provided with the solenoid valve on the through-hole, the water tank passes through the pipe connection with the feed pipe, the feed pipe passes through the pipe connection with the basin, the basin passes through the pipe connection with the drain pipe, the treater passes through circuit connection with a temperature sensor, the treater passes through circuit connection with the solenoid valve. The utility model discloses set up the through-hole between basin and lithium cell, after the lithium cell is inside on fire, water in the water tank can reach the basin through the feed pipe and for the battery cooling, and further through-hole between accessible basin and the lithium cell gets into the lithium cell to put out a fire to lithium cell inside. The utility model discloses can wide application in lithium cell technical field.
Description
Technical Field
The utility model relates to a lithium cell technical field especially relates to a lithium cell energy storage system's multiple protection fire extinguishing system.
Background
With the rapid development of electric vehicles, lithium batteries are used in electric vehicles on a large scale. However, under the conditions of overheating, overcharge, short circuit and the like, thermal runaway can occur in the lithium battery due to heat accumulation, and further fire and explosion accidents are caused. Especially for ternary lithium batteries, the method has great potential safety hazard.
With the development of the lithium battery technology driven by the rapid development of the electric automobile, the lithium batteries are applied to an energy storage system on a large scale at the present stage, and due to the limitation of energy density and space, the lithium battery containers are generally arranged closely, and no worker monitors the working state in the containers in real time. Therefore, if the fire is not extinguished and cooled in time after a certain battery module or battery core in the battery cabinet is out of control and the fire is out of control, the fire is very easy to spread and spread among the battery modules, the battery cabinet and even among the energy storage containers, so that large-scale fire explosion accidents are caused, and great threats are caused to personnel and property safety. At present, a fire extinguishing system for lithium batteries is generally a gas fire extinguishing system, but lacks a fire prevention system, and the fire extinguishing effect of gas fire fighting is not ideal.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a lithium cell energy storage system's multiple protection fire extinguishing system can put out a fire after the inside fire of lithium cell.
The utility model adopts the technical proposal that:
the utility model provides a multiple protection fire extinguishing system of lithium cell energy storage system, includes water tank, feed pipe, a plurality of basin, drain pipe, a temperature sensor and treater, the basin sets up on the lithium cell, a temperature sensor sets up on the lithium cell, the basin with be provided with the through-hole between the lithium cell, be provided with the solenoid valve on the through-hole, the water tank with the feed pipe passes through pipe connection, the feed pipe with the basin passes through pipe connection, the basin with the drain pipe passes through pipe connection, the treater with a temperature sensor passes through circuit connection, the treater with the solenoid valve passes through circuit connection.
Further, lithium cell energy storage system's multiple protection fire extinguishing systems still includes the booster pump, the booster pump sets up the water tank with on the connecting tube of feed pipe, the booster pump with the treater is connected.
Further, a plurality of fire-fighting spray headers are arranged on the water tank.
Further, a normally open water inlet valve is arranged on a connecting pipeline between the water tank and the water supply pipe.
Further, a normally open maintenance valve is arranged on a connecting pipeline between the water supply pipe and the water tank.
Further, the water supply pipe and the water discharge pipe are connected through a pipeline, and a normally closed water drain valve is arranged on a connecting pipeline between the water supply pipe and the water discharge pipe.
Further, a check valve is arranged on the drain pipe.
Further, lithium cell energy storage system's multiple protection fire extinguishing systems still includes second temperature sensor, smoke transducer and fire extinguishing agent, be provided with the fire extinguishing agent valve on the fire extinguishing agent, second temperature sensor with the treater is connected, smoke transducer with the treater is connected, the fire extinguishing agent valve with the treater is connected.
Further, lithium cell energy storage system's multiple protection fire extinguishing systems still includes time delay relay, time delay relay sets up the treater with between the fire extinguishing agent valve.
Further, the multiple protection fire extinguishing system of lithium battery energy storage system still includes the button, the button with the treater is connected.
The utility model discloses set up the through-hole between basin and lithium cell, after the lithium cell is inside on fire, water in the water tank can reach the basin through the feed pipe and for the battery cooling, and further through-hole between accessible basin and the lithium cell gets into the lithium cell to put out a fire to lithium cell inside.
Drawings
Fig. 1 is a water fire-fighting subsystem structure diagram of a multiple protection fire-fighting system of a lithium battery energy storage system according to an embodiment of the present invention;
fig. 2 is a structural diagram of a water tank of a water fire protection subsystem of a multiple protection fire protection system of a lithium battery energy storage system.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The power battery is a power supply for providing a power source on a new energy automobile, and the power battery mainly comprises a valve port sealed lead-acid storage battery, an open tubular lead-acid storage battery, a ternary lithium storage battery and a lithium iron phosphate storage battery. Among various types of power batteries, lithium batteries are widely used in various types of energy storage systems due to their excellent performance, but due to their high energy density, thermal runaway occurs inside lithium batteries due to heat accumulation under the conditions of overheating, overcharge, and short circuit, thereby causing fire inside lithium batteries.
The embodiment of the utility model provides a multiple protection fire extinguishing system for carry out the fire control to lithium cell energy storage system and put out a fire, including water fire extinguishing system and gaseous fire extinguishing system, water fire extinguishing system cools down and puts out a fire to lithium cell energy storage system through water, and gaseous fire extinguishing system puts out a fire to lithium cell energy storage system through non-combustible gas.
The water fire-fighting subsystem comprises a water path part and a circuit part, refer to fig. 1, the water path part comprises a water tank 101, a water supply pipe 102, a plurality of water tanks 103 and a water discharge pipe 104, refer to fig. 2, be provided with fire sprinkler 1032 on the water tank 103, after the ambient temperature near the fire sprinkler 1032 reaches a first threshold value, the fire sprinkler 1032 can explode automatically, make the water path part switch on, water in the water tank 101 can get into the water tank 103 through the water supply pipe 102, because the water tank 103 is arranged on the lithium battery 105, the temperature on the lithium battery 105 can be taken away by the water that gets into the water tank 103, and the water flows through the water discharge pipe 104 and is discharged, thereby the effect of cooling the lithium battery 105 is achieved. The circuit portion includes a first temperature sensor and a processor. First temperature sensor sets up on lithium cell 105 for detect the temperature of lithium cell 105, and transmit the temperature value that detects to the treater in, after the temperature of lithium cell 105 exceeded the second threshold value, refer to fig. 2, the solenoid valve in the through-hole 1031 in the basin 103 can be opened, thereby makes the water in the basin 103 can enter into lithium cell 105, puts out a fire to lithium cell 105 inside.
In the water fire-fighting subsystem, a top-down structure can be adopted, referring to fig. 1, the water tank 101 is kept at the top, the water tank 103 is kept at the middle, and the water outlet is kept at the bottom, so that water in the water tank 101 can enter the water tank 103 through the water supply pipe 102 under the action of gravity, and heat in the lithium battery 105 is taken away in the water tank 103 and then is discharged out of the system through the water discharge pipe 104. In some embodiments, the water fire protection subsystem cannot operate normally due to the relative positions of the water tank 101, the water tank 103 and the water outlet being not maintained, in which case, a booster pump may be additionally installed between the water tank 101 and the water supply pipe 102 to guide the water flow from the water tank 101 to the water outlet by the boosting effect of the booster pump. It will be appreciated that the water fire fighting system shown in fig. 1 may also be equipped with a booster pump, thereby improving the cooling efficiency of the water fire fighting system.
Because water fire control subsystem need regularly maintain in the in-service use process, prevent among the water fire control subsystem because water evaporation, water loss or other reasons, can't play the effect of putting out a fire in the process of starting a fire, consequently can set up the valve that is used for supplementary maintenance in water fire control subsystem.
As an alternative embodiment, referring to fig. 1, a normally open inlet valve 106 is disposed between the water tank 101 and the water supply pipe 102, the normally open inlet valve 106 may be used during installation and maintenance of the fire protection subsystem, and when maintenance of a pipeline or equipment between the normally open inlet valve 106 and the water outlet is required, the normally open inlet valve 106 may be closed without emptying water in the water tank 101, thereby improving the maintenance convenience of the fire protection system.
As an alternative embodiment, referring to fig. 1, a normally open maintenance valve 107 is disposed between water supply pipe 102 and water tank 103, where normally open maintenance valve 107 may be used when lithium battery 105 is maintained, and when lithium battery 105 is maintained, lithium battery 105 and water tank 103 on lithium battery 105 need to be detached, and at this time, normally open maintenance valve 107 corresponding to lithium battery 105 needs to be closed. By arranging the normally open maintenance valve 107, the convenience of the water fire-fighting system for maintaining the lithium battery 105 is greatly improved.
As an alternative embodiment, referring to fig. 1, the water supply pipe 102 and the water discharge pipe 104 may be connected to each other, and a normally closed water discharge valve 108 is disposed between the water supply pipe 102 and the water discharge pipe 104, when water needs to be discharged from the water fire fighting subsystem, the normally closed water discharge valve 108 may be opened, and the water supply pipe 102 and the water discharge pipe 104 are communicated through the normally closed water discharge valve 108, so that a water path may be shortened, and the water discharge efficiency of the water fire fighting subsystem may be improved. The normally closed drain valve 108 may be used in cooperation with the normally open maintenance valve 107, closing the normally open maintenance valve 107 and opening the normally closed drain valve 108 to directly transfer water from the water supply pipe 102 to the drain pipe 104, thereby shortening the waterway path.
As an alternative embodiment, referring to fig. 1, the drain pipe 104 is provided with a check valve 109, the check valve 109 can prevent water from flowing backward, water can flow backward into the water tank 103 through the drain pipe 104 during the draining process, the check valve 109 is provided, and the check valve 109 is set in the direction from the water tank 103 to the drain pipe 104, so that the water can be prevented from flowing backward during the draining process.
The gas fire-fighting subsystem comprises a second temperature sensor, a smoke sensor and a fire extinguishing agent, and a fire extinguishing agent valve is arranged on the fire extinguishing agent. The second temperature sensor is arranged in the lithium battery energy storage system and used for measuring the ambient temperature of the energy storage system, and the smoke sensor is arranged in the lithium battery energy storage system and used for measuring the ambient smoke concentration of the energy storage system. The fire extinguishing agent valve is arranged on the fire extinguishing agent and used for opening the fire extinguishing agent valve to extinguish the fire of the lithium battery energy storage system after the fire extinguishing condition is achieved, and the fire extinguishing agent can use heptafluoropropane.
In some embodiments, when the second temperature sensor detects that the ambient temperature is greater than the threshold or the smoke sensor detects that the smoke concentration in the environment is greater than the threshold, the gas fire protection subsystem may issue an audible and visual alarm, which may be implemented by a buzzer and a red LED lamp. When the second temperature sensor detects that the ambient temperature is greater than the threshold value and the smoke sensor detects that the smoke concentration in the environment is greater than the threshold value, the valve of the fire extinguishing agent can be opened by the gas fire-fighting subsystem, so that the fire extinguishing agent extinguishes the lithium battery energy storage system.
Because gaseous fire extinguishing subsystem uses gaseous fire extinguishing, consequently it can completely cut off lithium cell energy storage system's combustible gas, wherein also including the oxygen that supplies human breathing, consequently need reserve a period of time after judging need start the fire extinguishing agent and supply the staff in the lithium cell energy storage system to withdraw the scene.
As an optional embodiment, a delay relay can be arranged between the fire extinguishing agent valve and the processor, after the fire extinguishing agent is determined to need to be started for fire extinguishing, the processor can send signals to the delay relay, the delay relay can send the received signals to the fire extinguishing agent valve after certain time delay, so that the time for leaving the site is reserved for site workers, and safety accidents caused by the fire extinguishing agent are prevented.
In the event that a malfunction of the gas fire protection subsystem is found, the gas fire protection subsystem needs to be shut down to resume normal production. In some embodiments, the gas fire protection subsystem is further provided with a button by which a fire suppressant valve of the gas fire protection subsystem can be reset, thereby reducing stalling of the lithium battery energy storage system due to malfunction of the gas fire protection subsystem.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. In addition, for convenience of description, only a part of the structure related to the present invention, not the whole structure, is shown in the drawings.
Finally, it should also be noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities or even actual quantities of such entities. Thus, a feature defined by terms such as "first" and "second" may explicitly or implicitly include at least one such feature. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (10)
1. The utility model provides a multiple protection fire extinguishing system of lithium cell energy storage system, its characterized in that, includes water tank, feed pipe, a plurality of basin, drain pipe, a temperature sensor and treater, the basin sets up on the lithium cell, a temperature sensor sets up on the lithium cell, the basin with be provided with the through-hole between the lithium cell, be provided with the solenoid valve on the through-hole, the water tank with the feed pipe passes through pipe connection, the feed pipe with the basin passes through pipe connection, the basin with the drain pipe passes through pipe connection, the treater with a temperature sensor passes through circuit connection, the treater with the solenoid valve passes through circuit connection.
2. The multiple protection fire-fighting system of the lithium battery energy storage system of claim 1, further comprising a booster pump, wherein the booster pump is arranged on a connecting pipeline between the water tank and the water supply pipe, and the booster pump is connected with the processor.
3. The multiple protection fire protection system of a lithium battery energy storage system of claim 1, wherein a plurality of fire sprinklers are disposed on the water tank.
4. The multiple protection fire protection system of a lithium battery energy storage system according to claim 1, wherein a connection pipe between the water tank and the water supply pipe is provided with a normally open water inlet valve.
5. The multiple protection fire protection system of a lithium battery energy storage system of claim 1, wherein a connection pipe between the water supply pipe and the water tank is provided with a normally open maintenance valve.
6. The multiple protection fire fighting system of lithium battery energy storage system according to claim 1, characterized in that the water supply pipe and the water discharge pipe are connected by a pipeline, and a connecting pipeline between the water supply pipe and the water discharge pipe is provided with a normally closed water drain valve.
7. The multiple protection fire protection system of a lithium battery energy storage system of claim 1, wherein a check valve is disposed on the drain pipe.
8. The multiple protection fire-fighting system of the lithium battery energy storage system according to claim 1, further comprising a second temperature sensor, a smoke sensor and a fire extinguishing agent, wherein the fire extinguishing agent is provided with a fire extinguishing agent valve, the second temperature sensor is connected with the processor, the smoke sensor is connected with the processor, and the fire extinguishing agent valve is connected with the processor.
9. The multiple protection fire protection system of a lithium battery energy storage system of claim 8, further comprising a time delay relay disposed between the processor and the fire suppressant valve.
10. The multiple protection fire protection system of a lithium battery energy storage system of claim 1, further comprising a button connected to the processor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022479131.6U CN213941929U (en) | 2020-10-30 | 2020-10-30 | Multiple protection fire extinguishing system of lithium battery energy storage system |
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| CN202022479131.6U CN213941929U (en) | 2020-10-30 | 2020-10-30 | Multiple protection fire extinguishing system of lithium battery energy storage system |
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| CN213941929U true CN213941929U (en) | 2021-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036248A1 (en) * | 2021-09-10 | 2023-03-16 | 陕西奥林波斯电力能源有限责任公司 | Battery tank for large-scale energy storage system, and explosion venting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036248A1 (en) * | 2021-09-10 | 2023-03-16 | 陕西奥林波斯电力能源有限责任公司 | Battery tank for large-scale energy storage system, and explosion venting method |
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