CN216536633U - Heat pipe containing gas production device for battery - Google Patents
Heat pipe containing gas production device for battery Download PDFInfo
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- CN216536633U CN216536633U CN202122394498.2U CN202122394498U CN216536633U CN 216536633 U CN216536633 U CN 216536633U CN 202122394498 U CN202122394498 U CN 202122394498U CN 216536633 U CN216536633 U CN 216536633U
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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 provides a heat pipe containing a gas generating device for a battery, which belongs to the technical field of energy storage batteries and comprises a heat pipe body, wherein a heat conducting working medium in the heat pipe body is a fire-fighting heat conducting medium, and the gas generating device is arranged in a hollow structure of the heat pipe body. The gas generating device has simple structure, and has no influence on the structure of the battery and the structure of the heat pipe, namely the original structure and volume of the battery.
Description
Technical Field
The utility model belongs to the technical field of energy storage batteries, relates to the safety technology of energy storage batteries, and particularly relates to a heat pipe containing a gas production device for a battery.
Background
In recent years, lithium battery technology has been rapidly developed, and lithium batteries have been applied to more and more fields. The lithium cell can produce the heat at the course of the work, and it is too big at the in-process that uses repeatedly if the heat that produces, the heat can't be effectively distributed, can influence the stability that the lithium cell used to can shorten the life of lithium cell, further rise when the temperature, the lithium cell will be out of control, the electrolyte of the inside will decompose and produce combustible gas, combustible gas constantly gathers just to have the risk of explosion, catching fire. Therefore, safety in use of lithium batteries has been a concern.
Aiming at the fire hazard generated after the thermal runaway of the lithium battery in the current market, the main treatment method is the traditional fire extinguishing method by using the fire extinguishing agent, and the method can only extinguish the fire source outside the battery and cannot extinguish the fire from the root inside the battery, so that after the fire is extinguished outside the battery, the fire still exists inside the battery, and the risk of secondary reburning of the battery is caused.
Patent publication is CN 111912268A's utility model patent, and it discloses a heat pipe with heat conduction and fire control function, and the heat pipe bottom is connected with the container, and the medium has been stored in this container, is provided with the release nest of tubes on the container, is provided with the valve on the release nest of tubes. By adopting the structure, heat can be conducted at normal temperature, and when the battery pack is heated due to failure, the medium in the container can be sprayed into the battery pack, so that the purposes of cooling and extinguishing fire are achieved. Although this heat pipe can be arranged in the battery package, when the battery takes place thermal runaway, from the container blowout medium, put out a fire to battery inside, the structure of release nest of tubes in this patent is complicated, does not accord with the compact structure of lithium cell, the small theory of volume requirement, is not suitable for practical use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat pipe with a gas generating device for a battery, aiming at the problems that when the fire is extinguished in the battery in the prior art, a fire extinguishing medium releasing pipe group has a complex structure and is not suitable for practical use.
The utility model is characterized in that a gas generating device is arranged in a hollow structure of a heat pipe body, a gas generating agent and a temperature sensing initiator are arranged in the gas generating device, when the temperature sensing initiator senses that the temperature of a heat conducting medium in the heat pipe body exceeds a limit value, the temperature sensing initiator in the temperature sensing initiator reacts to release heat, so that the gas generating agent in the gas generating agent reacts to generate a large amount of gas, the gas generating device is filled with a large amount of gas, when the gas pressure is high enough, the gas generating device is broken and the gas is converged into an inner cavity of the heat pipe body, the pressure in the inner cavity of the heat pipe body is increased, an opening is formed at a weak part on the heat pipe body, a fire-fighting heat conducting medium is converged into a battery, and the fire is extinguished inside the battery. The gas generating device has simple structure, and has little influence on the structure of the battery and the structure of the heat pipe; the specific technical scheme is as follows:
a heat pipe containing a gas generating device for a battery comprises a heat pipe body, wherein a heat conducting working medium in the heat pipe body is a fire-fighting heat conducting medium, and the gas generating device is arranged in a hollow structure of the heat pipe body.
The gas generating device comprises a packaging shell, a temperature sensing initiator and a gas generating agent, wherein the packaging shell is arranged in the hollow structure of the heat pipe body, the temperature sensing initiator and the gas generating agent are both arranged in the packaging shell, and the temperature sensing initiator is used for triggering the gas generating agent to generate gas.
Further limited, the temperature sensitive initiator is attached to the inner wall of the packaging shell.
Further limited, the temperature sensitive initiator is attached to the top wall, the bottom wall or the side wall in the packaging shell.
Further, the packaging shell is arranged at the bottom of the hollow structure of the heat pipe body.
Further limiting, a sunken clamping groove is formed in the pipe wall of the heat pipe body and is in contact with the top of the packaging shell.
Further, the packaging shell is arranged below the liquid absorption core of the heat pipe body.
Further, a weak part is arranged on the pipe wall of the heat pipe body.
Further defined, the weakened portion is a weakened hole, a linear score groove or an annular score groove.
Further defined, the packaging shell is a metal shell or a plastic shell, and the packaging shell is compatible with the fire-fighting heat-conducting medium.
Further, the metal shell is a copper shell or an aluminum shell.
Further defined, the firefighting heat-conducting medium is perfluoroketone, pentafluoroethane, difluoromethane, difluoromonochloromethane, trifluorobromomethane, tetrafluorodibromoethane, heptafluoropropane, trifluoromethane, difluorobromomethane, monochlorobromomethane, difluorodibromomethane, ammonia water, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, fluoroalkyl phosphate, cresyldiphenyl phosphate, diphenyl monooctyl phosphate, tributyl phosphate, trimethyl phosphate, isopropylphenyl diphenyl phosphate, tris (4-methoxyphenyl) phosphate, cresyldiphenyl phosphate, diphenyl phosphate, trioctyl diphenyl phosphate, triethyl phosphate, ethylene ethyl phosphate, tris (β -chloroethyl) phosphate, tris (2,2,3,3, 3-pentafluoropropyl) phosphate, tris (1,1,1,3,3, 3-fluoro-2-propyl) ester, phosphite flame retardant, trimethyl phosphite, triphenyl phosphite, triethyl phosphite, tributyl phosphite, tris (2,2, 2-trifluoroethyl) phosphite, triester phosphite, phosphonate flame retardant, dimethyl methylphosphonate, diethyl ethylphosphonate, diethyl phenylphosphonate, bis (2,2, 2-trifluoroethyl) methylphosphonate, bis (2,2, 2-trifluoroethyl) ethylphosphonate, diethyl 2- (thienylmethyl) phosphonate, hexamethoxycyclotriphosphazene, hexa (methoxyethoxyethoxy) cyclotriphosphazene, unsaturated alkoxycyclotriphosphazene, hexa (2,2, 2-trifluoroethoxy) cyclotriphosphazene, ethoxypentafluorocyclotriphosphazene, phenoxypentafluorocyclotriphosphazene, 4-methoxy-phenoxypentafluorocyclotriphosphazene, 4-phenoxycyclopentapyrazene, triphenylphosphonitrile, and the like, 2-chloro-4-methoxy-phenoxy pentafluorocyclotriphosphazene, poly [ bis (methoxyethoxyethoxy) phosphazene ], poly [ bis (ethoxyethoxyethoxyethoxy) phosphazene ], phosphazene micromolecule, hexafluorocyclotriphosphazene, ethoxy (pentafluoro) cyclotriphosphazene and hexachlorocyclotriphosphazene.
Further defined, the fire-fighting heat-conducting medium is perfluorohexanone.
Further, the self-starting value of the temperature of the fire-fighting heat-conducting medium is larger than 150 ℃.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model relates to a heat pipe containing a gas generating device for a battery, which comprises a heat pipe body, wherein a heat conducting working medium in the heat pipe body is a fire-fighting heat conducting medium, and the gas generating device is arranged in an inner cavity of the heat pipe body. The evaporation section of the heat pipe body is arranged in the battery box body, the condensation section is arranged outside the battery box body, and when the battery works normally, heat generated by the battery when the battery works normally can be led out of the battery box body through the heat pipe body to dissipate heat of the battery; when the battery is out of control due to heat, the fire-fighting heat-conducting medium starts to generate heat because the heat cannot be timely led out, the gas generation device is triggered to start when the temperature of the fire-fighting heat-conducting medium is too high, a large amount of gas is generated, the gas generation device explodes under the action of the gas pressure, the gas is released into the inner cavity of the heat pipe body, the gas pressure of the gas and the steam pressure generated by the fire-fighting heat-conducting medium in the inner cavity of the heat pipe body jointly act, the heat pipe body is made to explode, the fire-fighting heat-conducting medium is released into the cavity of the battery, and the inside of the battery is put out a fire. The gas generating device has simple structure, and has no influence on the structure of the battery and the structure of the heat pipe, namely the original structure and volume of the battery.
2. The gas generating device comprises a packaging shell, a temperature-sensitive initiator and a gas generating agent, wherein the packaging shell is arranged in the hollow structure of the heat pipe body, the temperature-sensitive initiator and the gas generating agent are both arranged in the packaging shell, and the temperature-sensitive initiator is used for triggering the gas generating agent to generate gas; the temperature of the fire-fighting heat-conducting medium is sensed through the temperature-sensing initiator, and when the temperature-sensing initiator reaches a self-starting value, the temperature-sensing initiator starts to react and generate heat so as to provide a temperature condition for gas production of the gas-producing agent. The whole process has simple reaction principle and good feasibility of implementation.
3. The temperature-sensitive initiator is attached to the inner wall of the packaging shell; the temperature sensing initiator is more sensitive to temperature sensing of the fire-fighting heat-conducting medium.
4. The packaging shell is arranged at the bottom of the hollow structure on the heat pipe body, so that the steam flow and the condensed gas backflow in the inner cavity of the heat pipe body cannot be influenced, and the normal heat conduction work of the heat pipe body cannot be hindered.
5. A sunken clamping groove is formed in the pipe wall of the heat pipe body and is in contact with the top of the packaging shell; through sunken draw-in groove to the encapsulation casing carry out chucking, spacing, prevent that the encapsulation casing from floating in the hollow structure of heat pipe body, influencing the circulation of fire-fighting heat-conducting medium in the heat pipe body.
6. The pipe wall of the heat pipe body is provided with a weak part, and the pressure in the heat pipe body can reach a limit value through the weak part, so that explosion can be generated at the weak part to release fire-fighting heat-conducting media.
7. The encapsulation shell is compatible with the fire-fighting heat-conducting medium, which means that the encapsulation shell does not react with the fire-fighting heat-conducting medium and does not affect the fire-fighting heat-conducting medium.
Drawings
FIG. 1 is a schematic structural view of a temperature-sensitive initiator arranged on the side of a gas generating device;
FIG. 2 is a first schematic view of a heat pipe with a gas generating device for a battery according to the present invention;
FIG. 3 is a schematic structural view of a temperature-sensitive initiator arranged at the bottom of a gas generating device;
FIG. 4 is a second schematic structural view of a heat pipe with a gas generating device for a battery according to the present invention;
FIG. 5 is a schematic structural view of a gas generating device with temperature sensitive initiators disposed on the top, bottom and side walls of the inner side;
FIG. 6 is a third schematic view of the structure of a heat pipe with a gas generating device for a battery according to the present invention;
the heat pipe comprises a heat pipe body 1, a hollow structure 2, a gas generating device 3, a temperature sensing initiator 31, a gas generating agent 32, a weak part 4, a linear scribing groove 41, an annular scribing groove 42 and a concave clamping groove 5.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The utility model relates to a heat pipe containing a gas generating device for a battery, which comprises a heat pipe body 1, wherein a heat conducting working medium in the heat pipe body 1 is a fire-fighting heat conducting medium, and a gas generating device 3 is arranged in a hollow structure 2 of the heat pipe body 1. The gas generating device 3 comprises a packaging shell, a temperature sensing initiator 31 and a gas generating agent 32, wherein the packaging shell is arranged in the hollow structure 2 of the heat pipe body 1, the temperature sensing initiator 31 and the gas generating agent 32 are both arranged in the packaging shell, and the temperature sensing initiator 31 is used for triggering the gas generating agent 32 to generate gas. The temperature sensitive initiator 31 is bonded to the inner wall of the package case. The temperature sensitive initiator 31 is attached to the top wall, the bottom wall or the side wall in the package housing. The packaging shell is arranged at the bottom of the hollow structure 2 on the heat pipe body 1. The pipe wall of the heat pipe body 1 is provided with a concave clamping groove, and the concave clamping groove is in contact with the top of the packaging shell. The packaging shell is arranged below the liquid absorption core of the heat pipe body 1. The pipe wall of the heat pipe body 1 is provided with a weak part 4. The weak portion 4 is a weak hole, a linear scribing groove or an annular scribing groove. The packaging shell is a metal shell or a plastic shell, and the packaging shell is compatible with the fire-fighting heat-conducting medium. The metal shell is a copper shell or an aluminum shell. The fire-fighting heat-conducting medium is perfluoroketone, pentafluoroethane, difluoromethane, difluoromonochloromethane, trifluoromonobromomethane, tetrafluorodibromoethane, heptafluoropropane, trifluoromethane, difluorobromomethane, monochloromethane, difluorodibromomethane, ammonia water, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, fluoroalkyl phosphate, cresyl diphenyl phosphate, diphenyl-octyl phosphate, tributyl phosphate, trimethyl phosphate, isopropylphenyl diphenyl phosphate, tris (4-methoxyphenyl) phosphate, cresyl diphenyl phosphate, diphenyl phosphate, trioctyl phosphate, triethyl phosphate, ethylene ethyl phosphate, tris (beta-chloroethyl) phosphate, tris (2,2,3,3, 3-pentafluoropropyl) phosphate, tris (1,1,1,3,3, 3-fluoro-2-propyl) phosphate, Phosphite flame retardants, trimethyl phosphite, triphenyl phosphite, triethyl phosphite, tributyl phosphite, tris (2,2, 2-trifluoroethyl) phosphite, triesters of phosphorous acid, phosphonate flame retardants, dimethyl methylphosphonate, diethyl ethylphosphonate, diethyl phenylphosphonate, bis (2,2, 2-trifluoroethyl) methylphosphonate, bis (2,2, 2-trifluoroethyl) ethylphosphonate, diethyl 2- (thienylmethyl) phosphonate, hexamethoxycyclotriphosphazene, hexa (methoxyethoxyethoxy) cyclotriphosphazene, unsaturated alkoxycyclotriphosphazene, hexa (2,2, 2-trifluoroethoxy) cyclotriphosphazene, ethoxypentafluorocyclotriphosphazene, phenoxypentafluorocyclotriphosphazene, 4-methoxy-phenoxypentafluorocyclotriphosphazene, 2-chloro-4-methoxy-phenoxypentafluorocyclotriphosphazene, tris (2,2,2, 2-trifluoroethyl) phosphonitrile, tris (2,2,2, 2-trifluoroethyl) ethylphosphonite, tris (2,2, 2-trifluoroethyl) phosphonate, 2-ethyl) ethylphosphonite, bis (2, 2-trifluoroethyl) ethylphosphonite, bis (2-ethoxycyclopentafluorotriphosphonite), tris (2-ethoxycyclopentafluorocyclotriphosphazene) phosphonitrile, 2-ethoxycyclotriphosphazene, 2-trifluoroethyl) phosphonite, 2-ethyl-phosphonate, 2-ethyl-phosphonate, phosphonitrile-ethyl, Poly [ bis (methoxyethoxyethoxy) phosphazene ], poly [ bis (ethoxyethoxyethoxyethoxy) phosphazene ], phosphazene small molecule, hexafluorocyclotriphosphazene, ethoxy (pentafluoro) cyclotriphosphazene, hexachlorocyclotriphosphazene, or a combination of two or more thereof. The fire-fighting heat-conducting medium is perfluorohexanone.
Example 1
Referring to fig. 1-2, a heat pipe including a gas generating device for a battery according to the present embodiment includes a heat pipe body 1, a heat-conducting working medium in the heat pipe body 1 is a fire-fighting heat-conducting medium, a gas generating device 3 is disposed in a hollow structure 2 of the heat pipe body 1, and the hollow structure 2 of the heat pipe body 1 is a steam flowing cavity, that is, steam generated by vaporization of the fire-fighting heat-conducting medium flows in the hollow structure 2 of the heat pipe body 1.
The gas generating device 3 of the embodiment comprises an encapsulation shell, a temperature sensing initiator 31 and a gas generating agent 32, wherein the encapsulation shell is of a hexagonal structure and is a metal shell, and the metal shell is compatible with a fire-fighting heat-conducting medium, wherein the compatibility means that no chemical reaction occurs between the metal shell and the fire-fighting heat-conducting medium; the packaging shell is arranged in the hollow cavity of the heat pipe body 1, the temperature-sensitive initiating agent 31 and the gas generating agent 32 are packaged and sealed through the packaging shell, and the temperature-sensitive initiating agent 31 is used for triggering the gas generating agent 32 to generate gas.
Preferably, the temperature sensitive initiator 31 of the present embodiment is attached to four side walls in the inner cavity of the package housing. The packaging shell is arranged at the bottom of the heat pipe body 1 and is positioned right below the heat absorption core on the heat pipe body 1.
The present embodiment is provided with the weak portion 4 on the pipe wall of the heat pipe body 1. Preferably, the weak portion 4 is a weak hole, and the wall thickness of the weak hole is one fourth to one third of the wall thickness of the heat pipe body 1.
Preferably, the package housing of the present embodiment is a copper housing or an aluminum housing.
Preferably, the temperature-sensitive initiator 31 in the present embodiment is a heat-sensitive wire agent.
Preferably, the gas generating agent 32 in this embodiment is a commercially available potassium aerosol, strontium, black powder, or the like.
Preferably, the fire-fighting heat-conducting medium of the embodiment is perfluorohexanone.
Preferably, the self-starting temperature of the temperature sensitive initiator 31 of the present embodiment is 160 ℃.
Example 2
Referring to fig. 3 to 4, the heat pipe including the gas generating device for the battery of the present embodiment includes a heat pipe body 1, the heat conducting working medium in the heat pipe body 1 is a fire-fighting heat conducting medium, the gas generating device 3 is disposed in the hollow structure 2 of the heat pipe body 1, and the hollow structure 2 of the heat pipe body 1 is a steam flowing cavity, that is, steam after vaporization of the fire-fighting heat conducting medium flows in the hollow structure 2 of the heat pipe body 1.
The gas generating device 3 of the embodiment comprises a packaging shell, a temperature sensing initiator 31 and a gas generating agent 32, wherein the packaging shell is of a hexagonal structure and is a plastic shell, and the plastic shell is compatible with a fire-fighting heat-conducting medium, wherein the compatibility means that no chemical reaction occurs between the metal shell and the fire-fighting heat-conducting medium; the packaging shell is arranged in the hollow cavity of the heat pipe body 1, the temperature sensing initiator 31 and the gas generating agent 32 are packaged and sealed through the packaging shell, and the temperature sensing initiator 31 is used for triggering the gas generating agent 32 to generate gas.
Preferably, the temperature sensitive initiator 31 of the present embodiment is attached to four side walls in the inner cavity of the package housing. The packaging shell is arranged at the bottom of the heat pipe body 1 and is positioned below the heat absorption core on the heat pipe body 1.
The present embodiment is provided with the weak portion 4 on the pipe wall of the heat pipe body 1. Preferably, the weak portion 4 is a linear groove 41 disposed along the axial direction of the heat pipe body 1, and the bottom wall thickness of the linear groove 41 is one fifth of the wall thickness of the heat pipe body 1.
Preferably, the temperature-sensitive initiator 31 in the present embodiment is a heat-sensitive wire agent.
Preferably, the gas generating agent 32 in this embodiment is a commercially available potassium aerosol, strontium, black powder, or the like.
Preferably, the fire-fighting heat-conducting medium of the embodiment is a mixture of trifluorobromomethane, triethyl phosphate and hexachlorocyclotriphosphazene in any proportion.
Preferably, the self-starting temperature of the temperature sensitive initiator 31 of the present embodiment is 170 ℃.
Preferably, the pipe wall of the heat pipe body 1 of this embodiment is provided with a concave clamping groove 5, and the bottom of the concave clamping groove 5 contacts with the top of the package housing. The packaging shell is limited through the concave clamping groove 5.
Example 3
Referring to fig. 5 to 6, the heat pipe including a gas generating device for a battery according to the present embodiment includes a heat pipe body 1, a heat-conducting working medium in the heat pipe body 1 is a fire-fighting heat-conducting medium, a gas generating device 3 is disposed in a hollow structure 2 of the heat pipe body 1, and the hollow structure 2 of the heat pipe body 1 is a steam flowing cavity, that is, steam generated after vaporization of the fire-fighting heat-conducting medium flows in the hollow structure 2 of the heat pipe body 1.
The gas generating device 3 of the embodiment comprises an encapsulation shell, a temperature sensing initiator 31 and a gas generating agent 32, wherein the encapsulation shell is of a hexagonal structure and is a copper shell, and the copper shell is compatible with a fire-fighting heat-conducting medium, and the compatibility means that no chemical reaction occurs between the metal shell and the fire-fighting heat-conducting medium; the packaging shell is arranged in the hollow cavity of the heat pipe body 1, the temperature sensing initiator 31 and the gas generating agent 32 are packaged and sealed through the packaging shell, and the temperature sensing initiator 31 is used for triggering the gas generating agent 32 to generate gas.
Preferably, the temperature sensitive initiator 31 of the present embodiment is attached to the top wall, the bottom wall and the side wall of the inner side of the inner cavity of the package housing. The packaging shell is arranged at the bottom of the heat pipe body 1 and is positioned below the heat absorbing core on the heat pipe body 1.
The present embodiment is provided with the weak portion 4 on the pipe wall of the heat pipe body 1. Preferably, the weak portion 4 is an annular scored groove 42 arranged along the circumferential direction of the heat pipe body 1, and the bottom wall thickness of the annular scored groove 42 is one fourth of the wall thickness of the pipe wall of the heat pipe body 1.
Preferably, the temperature-sensitive initiator 31 in the present embodiment is a heat-sensitive wire agent.
Preferably, the gas generating agent 32 in this embodiment is a commercially available potassium aerosol, strontium, black powder, or the like.
Preferably, the fire-fighting heat-conducting medium of the embodiment is a mixture of pentafluoroethane, difluoromethane, trioctyl phosphate and ethoxy pentafluorocyclotriphosphazene in any proportion.
Preferably, the self-initiation temperature of the temperature sensitive initiator 31 of the present embodiment is 180 ℃.
Preferably, a concave clamping groove 5 is arranged on the tube wall of the heat pipe body 1 of the embodiment, and the bottom of the concave clamping groove 5 is in contact with the top of the packaging shell; the concave clamping groove 5 is an annular clamping groove arranged along the circumferential direction of the heat pipe body 1. The packaging shell is limited through the concave clamping groove 5.
Example 4
The fire extinguishing method of the heat pipe containing the gas generating device for the battery is based on any one of the heat pipes containing the gas generating device for the battery in the embodiments 1 to 3, and comprises the following specific steps:
1) when the temperature of the fire-fighting heat-conducting medium in the heat pipe body 1 reaches a self-starting value, the temperature-sensitive initiator 31 reacts and releases heat to provide a reaction temperature condition for the gas generating agent 32;
2) when the temperature reaches the reaction condition of the gas generating agent 32, the gas generating agent starts to react and generate a large amount of gas, the gas is continuously gathered in the packaging shell, and when the air pressure in the packaging shell reaches the limit value of the explosion of the packaging shell, the packaging shell is exploded;
3) gas gathers in 2 in the lumen of heat pipe body 1, impels inside the explosion of heat pipe body 1 releases fire control heat-conducting medium to the battery, puts out a fire to inside the battery.
Preferably, step 3) of this embodiment is specifically that gas is gathered in the lumen 2 of the heat pipe body 1, and the gas pressure generated by the gas and the gas pressure generated by the evaporation of the fire-fighting heat-conducting medium act together to promote the rupture of the weak part 4 of the heat pipe body 1, so as to release the fire-fighting heat-conducting medium into the battery, thereby extinguishing the fire inside the battery.
Preferably, the self-starting value of the temperature of the heat transfer medium in the step 1) of the embodiment is greater than 150 ℃.
It is to be noted that the fire fighting heat conducting medium of the present invention may be perfluoroketone, pentafluoroethane, difluoromethane, difluoromonochloromethane, trifluoromonobromomethane, tetrafluorodibromoethane, heptafluoropropane, trifluoromethane, difluorobromomethane, monochlorobromomethane, difluorodibromomethane, ammonia water, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, fluoroalkyl phosphate, cresyldiphenyl phosphate, triphenylphoximyl phosphate, tributyl phosphate, trimethyl phosphate, isopropylphenyldiphenyl phosphate, tris (4-methoxyphenyl) phosphate, tolyldiphenyl phosphate, octyldiphenyl phosphate, trioctyl phosphate, triethyl phosphate, ethyleneethyl phosphate, tris (β -chloroethyl) phosphate, tris (2,2,3,3, 3-pentafluoropropyl) phosphate, tris (1,1, 3,3, 3-fluoro-2-propyl) ester, a phosphite flame retardant, trimethyl phosphite, triphenyl phosphite, triethyl phosphite, tributyl phosphite, tris (2,2, 2-trifluoroethyl) phosphite, triester phosphite, a phosphonate flame retardant, dimethyl methylphosphonate, diethyl ethylphosphonate, diethyl phenylphosphonate, bis (2,2, 2-trifluoroethyl) methylphosphonate, bis (2,2, 2-trifluoroethyl) ethylphosphonate, diethyl 2- (thienylmethyl) phosphonate, hexamethoxycyclotriphosphazene, hexakismethoxyethoxyethoxy cyclotriphosphazene, unsaturated alkoxycyclotriphosphazene, hexakis (2,2, 2-trifluoroethoxy) cyclotriphosphazene, ethoxypentafluorocyclotriphosphazene, phenoxypentafluorocyclotriphosphazene, 4-methoxy-phenoxypentafluorocyclotriphosphazene, trichlorophosphazene, trimethyl phosphite, triethyl phenylphosphonate, triethyl phosphite, and mixtures thereof, 2-chloro-4-methoxy-phenoxy pentafluorocyclotriphosphazene, poly [ bis (methoxyethoxyethoxy) phosphazene ], poly [ bis (ethoxyethoxyethoxyethoxy) phosphazene ], phosphazene micromolecule, hexafluorocyclotriphosphazene, ethoxy (pentafluoro) cyclotriphosphazene and hexachlorocyclotriphosphazene. The utility model relates to a heat pipe containing a gas generating device for a battery, which is characterized in that during processing, the gas generating device 3 is firstly arranged in a hollow structure 2 of a heat pipe body 1 to seal one end part of the heat pipe body 1, the hollow structure 2 of the heat pipe body 1 is pumped to a vacuum state through the other end part of the heat pipe body 1, then a fire-fighting heat-conducting medium is filled into the hollow structure 2 of the heat pipe body 1 from the other end part of the heat pipe body 1, and finally the end part is sealed.
The utility model has been described in further detail with reference to specific preferred embodiments thereof, and it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (14)
1. A heat pipe containing a gas generating device for a battery is characterized by comprising a heat pipe body, wherein a heat conducting working medium in the heat pipe body is a fire-fighting heat conducting medium, and the gas generating device is arranged in a hollow structure of the heat pipe body.
2. The heat pipe containing a gas generating device for a battery according to claim 1, wherein the gas generating device comprises an encapsulating shell, a temperature sensitive initiator and a gas generating agent, the encapsulating shell is arranged in the hollow structure of the heat pipe body, the temperature sensitive initiator and the gas generating agent are both arranged in the encapsulating shell, and the temperature sensitive initiator is used for triggering the gas generating agent to generate gas.
3. The heat pipe containing a gas generating device for a battery according to claim 2, wherein the temperature sensitive initiator is bonded to an inner wall of the package case.
4. The heat pipe containing a gas generating device for a battery according to claim 3, wherein the temperature sensitive initiator is attached to the top wall, the bottom wall or the side wall of the package case.
5. The heat pipe with a gas generating device for a battery according to any one of claims 2 to 4, wherein the packaging case is disposed at the bottom of the hollow structure on the heat pipe body.
6. The heat pipe with the gas generating device for the battery according to claim 5, wherein a recessed groove is formed in a pipe wall of the heat pipe body, and the recessed groove is in contact with the top of the packaging shell.
7. A heat pipe for a battery having a gas generating device according to claim 6 wherein said enclosure is disposed below the wick of the heat pipe body.
8. The heat pipe with a gas generating device for a battery as claimed in claim 7, wherein the pipe wall of the heat pipe body is provided with a weak part.
9. The heat pipe having a gas generating device for a battery as claimed in claim 8, wherein the weak portion is a weak hole, a linear groove or an annular groove.
10. The heat pipe with a gas generating device for the battery according to claim 9, wherein the packaging shell is a metal shell or a plastic shell, and the packaging shell is compatible with a fire-fighting heat-conducting medium.
11. The heat pipe with a gas generating device for a battery according to claim 10, wherein the metal case is a copper case or an aluminum case.
12. The heat pipe for a battery including a gas generating device according to claim 11, wherein the fire-fighting heat transfer medium is perfluoroketone, pentafluoroethane, difluoromethane, difluoromonochloromonobromomethane, trifluoromonobromomethane, tetrafluorodibromoethane, heptafluoropropane, trifluoromethane, difluorobromomethane, monochloromonobromomethane, difluorodibromomethane, ammonia water, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, fluoroalkyl phosphate, cresyldiphenyl phosphate, diphenyl-octyltriphenyl phosphate, tributyl phosphate, isopropylphenyl diphenyl phosphate, tris (4-methoxyphenyl) phosphate, cresyldiphenyl phosphate, octyl diphenyl phosphate, trioctyl phosphate, ethylene ethyl phosphate, tris (β -chloroethyl) phosphate, tris (2,2,3,3, 3-pentafluoropropyl) phosphate, tris (1,1,1,3,3, 3-fluoro-2-propyl) ester, phosphite flame retardants, trimethyl phosphite, triphenyl phosphite, triethyl phosphite, tributyl phosphite, tris (2,2, 2-trifluoroethyl) phosphite, triester phosphite, phosphonate flame retardants, dimethyl methylphosphonate, diethyl ethylphosphonate, diethyl phenylphosphonate, bis (2,2, 2-trifluoroethyl) methylphosphonate, bis (2,2, 2-trifluoroethyl) ethylphosphonate, diethyl 2- (thienylmethyl) phosphonate, hexamethoxycyclotriphosphazene, hexa (methoxyethoxyethoxy) cyclotriphosphazene, unsaturated alkoxycyclotriphosphazene, hexa (2,2, 2-trifluoroethoxy) cyclotriphosphazene, ethoxypentafluorocyclotriphosphazene, phenoxypentafluorocyclotriphosphazene, 4-methoxy-phenoxypentafluorocyclotriphosphazene, tris (ethoxyethoxy) cyclotriphosphazene, tris (ethoxyethoxyethoxycarbonylphosphazene), tris (ethoxycarbonylpentafluorocyclotriphosphazene, phenoxycyclopentacyclonitrilephosphazene, 4-phenoxycyclopentacyclotriphosphazene, and the like, 2-chloro-4-methoxy-phenoxy pentafluorocyclotriphosphazene, poly [ bis (methoxyethoxyethoxy) phosphazene ], poly [ bis (ethoxyethoxyethoxyethoxy) phosphazene ], phosphazene micromolecule, hexafluorocyclotriphosphazene, ethoxy (pentafluoro) cyclotriphosphazene and hexachlorocyclotriphosphazene.
13. The heat pipe with a gas generating device for a battery of claim 12, wherein the fire-fighting heat-conducting medium is perfluorohexanone.
14. The heat pipe with a gas generating device for the battery of claim 13, wherein the self-starting value of the temperature of the fire-fighting heat-conducting medium is more than 150 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113908470A (en) * | 2021-09-30 | 2022-01-11 | 陕西奥林波斯电力能源有限责任公司 | Heat pipe containing gas production device for battery and fire extinguishing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113908470A (en) * | 2021-09-30 | 2022-01-11 | 陕西奥林波斯电力能源有限责任公司 | Heat pipe containing gas production device for battery and fire extinguishing method thereof |
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