CN116759688A - Fire protection device for energy storage battery - Google Patents
Fire protection device for energy storage battery Download PDFInfo
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- CN116759688A CN116759688A CN202310003742.9A CN202310003742A CN116759688A CN 116759688 A CN116759688 A CN 116759688A CN 202310003742 A CN202310003742 A CN 202310003742A CN 116759688 A CN116759688 A CN 116759688A
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- Prior art keywords
- energy storage
- storage battery
- ejection
- battery
- ejection mechanism
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- 238000004146 energy storage Methods 0.000 title claims abstract description 115
- 230000007246 mechanism Effects 0.000 claims abstract description 131
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 239000000110 cooling liquid Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 25
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical class CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000010355 oscillation Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 210000000352 storage cell Anatomy 0.000 claims description 2
- 230000007480 spreading Effects 0.000 abstract description 5
- 238000003892 spreading Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Secondary Cells (AREA)
Abstract
The application relates to a fire protection device for an energy storage battery, which comprises a protection main body and at least one ejection assembly; the protection main body comprises a vertical part and a horizontal part, one end of the horizontal part is connected with the outer side wall close to the bottom end of the vertical part, at least one battery groove is formed in one side of the vertical part facing the horizontal part, ejection components are arranged in one-to-one correspondence with the battery grooves, the ejection components are accommodated in the battery grooves, the top surface of the horizontal part is provided with a pair of cooling grooves, and cooling liquid is contained in the cooling grooves; the ejection assembly comprises a control mechanism and an ejection mechanism, one end of the control mechanism is connected with the inner side wall of the battery tank, the other end of the control mechanism is abutted with the outer wall of the ejection mechanism, and the ejection mechanism can move relative to the control mechanism; by arranging the ejection mechanism, a large amount of heat generated by thermal runaway of the ejection mechanism is prevented from spreading to the adjacent ejection mechanism, and the risk of fire disaster of the battery pack is eliminated, so that the use safety is improved.
Description
Technical Field
The application relates to the technical field of energy storage batteries, in particular to a fire protection device for an energy storage battery.
Background
At present, the energy storage technology is an important means for meeting the requirement of large-scale intervention of renewable energy sources, and the lithium ion battery has high energy density and is widely applied to the scenes of energy storage power stations, power exchange stations and the like. Due to the activity of the electrode of the energy storage battery and the instability of electrolyte, the condensation, insulation breakdown and short circuit of the external circuit of the energy storage battery occur in the equipment cabinet body in the use process; the internal materials of the energy storage battery are short-circuited, the energy storage battery is impacted and extruded to cause mechanical damage and the like to trigger the energy storage battery to generate thermal runaway, chemical reaction heat release occurs between the internal materials, fire or explosion accidents are caused, and the safety performance of the energy storage power station is seriously affected.
In the prior art, the energy storage battery equipment is generally installed in a container or cabinet type, and fire protection and extinguishment are carried out in modes of fire extinguisher, fire detection pipe, water spraying and the like.
However, the existing water spraying fire protection system generally allows the battery to extinguish fire and cool down when a fire condition occurs for the first time, but under the normal condition, the battery can be ignited again due to the fact that the internal temperature is too high, and moisture can cause other high-voltage battery packs to be short-circuited and thoroughly damaged.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application aims to provide the fire protection device for the energy storage battery, which has the advantages of effectively solving the problem of thermal runaway of a battery pack of the energy storage battery, avoiding a large amount of heat generated by the thermal runaway of the energy storage battery from spreading to the adjacent energy storage battery and eliminating the risk of fire disaster of a battery pack.
The above object of the present application is achieved by the following technical solutions: a fire protection device for an energy storage battery comprises a protection main body and at least one ejection assembly; the protection main body comprises a vertical part and a horizontal part, one end of the horizontal part is connected with the outer side wall close to the bottom end of the vertical part, at least one battery groove is formed in one side of the vertical part, which faces the horizontal part, the ejection components are arranged in a one-to-one correspondence manner with the battery grooves, the ejection components are accommodated in the battery grooves, the top surface of the horizontal part is provided with a pair of cooling grooves, and cooling liquid is contained in the cooling grooves; the ejection assembly comprises a control mechanism and an ejection mechanism, one end of the control mechanism is connected with the inner side wall of the battery groove, the other end of the control mechanism is abutted with the outer wall of the ejection mechanism, and the ejection mechanism can move relative to the control mechanism; the control mechanism is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the control mechanism, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the control mechanism pushes the ejection mechanism to eject the battery tank to fall into the cooling tank.
Preferably, the fire protection device for the energy storage battery provided by the application comprises a liquid cooling air bag, an energy storage battery pack, a first connecting unit and a second connecting unit, wherein the liquid cooling air bag is internally provided with perfluorinated hexanone cooling liquid, the energy storage battery pack is internally provided with a positive electrode and a negative electrode, the positive electrode and the negative electrode are arranged at intervals along a first direction of the liquid cooling air bag, and one ends of the positive electrode and the negative electrode, which are far away from the energy storage battery pack, extend to the outside of the liquid cooling air bag along a second direction of the liquid cooling air bag; one end of the first connecting unit is connected with the positive electrode of the energy storage system bus arranged on the inner side wall of the battery tank in a pluggable manner, and the other end of the first connecting unit is connected with the extending end of the positive electrode; one end of the second connecting unit is connected with the negative electrode of the energy storage system bus in a pluggable mode, and the other end of the second connecting unit is connected with the extending end of the negative electrode.
Preferably, the first connection unit comprises a first current connector and a first cable, wherein the first current connector is connected with one end of the first cable, one end of the first current connector, which is away from the first cable, is connected with the positive electrode of the energy storage system bus in a pluggable manner, and one end of the first cable, which is away from the first current connector, is connected with the extending end of the positive electrode; the second connecting unit comprises a second current connector and a second cable, wherein the second current connector is connected with one end of the second cable, one end, deviating from the second cable, of the second current connector is connected with the negative electrode of the energy storage system bus in a pluggable manner, and one end, far away from the second current connector, of the second cable is connected with the extending end of the negative electrode.
Preferably, in the fire protection device for an energy storage battery provided by the application, at least two pairs of rollers are arranged at the bottom end of the liquid cooling air bag, and the two pairs of rollers are arranged at intervals along the second direction; the inner bottom plate of the battery groove is provided with a sliding groove matched with the roller, the sliding groove extends along the second direction, the roller is inserted into the sliding groove, and the roller can slide along the sliding groove.
Preferably, in the fire protection device for an energy storage battery provided by the application, the sliding groove is internally provided with the stop piece, when the energy storage battery pack works normally, the stop piece is positioned at one side of the roller far away from the control mechanism, and the stop piece is abutted with the peripheral wall of the roller.
Preferably, in the fire protection device for an energy storage battery provided by the application, the cross section of the stop piece is in a right triangle shape, and when the energy storage battery pack works normally, the inclined surface of the stop piece is abutted with the peripheral wall of the roller.
Preferably, according to the fire protection device for the energy storage battery, a flow collecting bag top cover is arranged at one end, away from the positive electrode or the negative electrode, of the energy storage battery bag.
Preferably, the fire protection device for the energy storage battery provided by the application is characterized in that the flow gathering bag top cover is made of copper.
Preferably, the control mechanism of the fire protection device for the energy storage battery provided by the application comprises a detection unit and a pushing unit, wherein one end of the detection unit is connected with the inner side wall of the battery groove, the other end of the detection unit is used for being abutted with the outer side wall of the ejection mechanism, one end of the pushing unit is connected with the inner side wall of the battery groove, and the other end of the pushing unit is used for being abutted with the ejection mechanism; the detection unit is in driving connection with the pushing unit; the detection unit is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the detection unit, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the detection unit drives the pushing unit, and the pushing unit ejects the ejection mechanism out of the battery tank.
Preferably, the fire protection device for the energy storage battery provided by the application comprises a reverse pressure valve and a thermal runaway detector, wherein the thermal runaway detector is connected with one end of the reverse pressure valve, one side of the thermal runaway detector, which is away from the reverse pressure valve, is connected with the inner side wall of the battery tank, and one end of the reverse pressure valve, which is away from the thermal runaway detector, is abutted with the outer side wall of the ejection mechanism; the thermal runaway detector is in driving connection with the pushing unit; the thermal runaway detector is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the reverse pressure valve, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the thermal runaway detector drives the pushing unit to eject the ejection mechanism out of the battery tank.
Preferably, the pushing unit comprises a sleeve, a spiral spring and a push rod, wherein the spiral spring is accommodated in the sleeve, a first end of the spiral spring is connected with the inner wall of the sleeve, a second end of the spiral spring extends along the central axis direction of the sleeve, one end of the push rod is connected with the second end of the spiral spring, and the other end of the push rod extends along the central axis direction of the sleeve and is used for being abutted with the ejection mechanism; when the energy storage battery pack works normally, the spiral spring is in a compressed state.
Preferably, in the fire protection device for the energy storage battery provided by the application, an ultrasonic oscillation source is arranged in the cooling tank and is used for being matched with the cooling liquid to destroy the surface tension of the energy storage battery pack falling into the cooling tank.
In summary, the beneficial technical effects of the application are as follows: the application provides a fire protection device for an energy storage battery, which comprises a protection main body and at least one ejection assembly; the protection main body comprises a vertical part and a horizontal part, one end of the horizontal part is connected with the outer side wall close to the bottom end of the vertical part, at least one battery groove is formed in one side of the vertical part facing the horizontal part, ejection components are arranged in one-to-one correspondence with the battery grooves, the ejection components are accommodated in the battery grooves, the top surface of the horizontal part is provided with a pair of cooling grooves, and cooling liquid is contained in the cooling grooves; the ejection assembly comprises a control mechanism and an ejection mechanism, one end of the control mechanism is connected with the inner side wall of the battery tank, the other end of the control mechanism is abutted with the outer wall of the ejection mechanism, and the ejection mechanism can move relative to the control mechanism; the control mechanism is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the control mechanism, and when the temperature in the battery tank reaches the preset temperature or the pressure value reaches the preset pressure value, the control mechanism pushes the ejection mechanism to eject the battery tank to fall into the cooling tank; by arranging the ejection mechanism, a large amount of heat generated by thermal runaway of the ejection mechanism is prevented from spreading to the adjacent ejection mechanism, and the risk of fire disaster of the battery pack is eliminated, so that the use safety is improved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a fire protection device for an energy storage battery according to an embodiment of the present application.
Fig. 2 is a schematic structural view of an ejection assembly in the fire protection device for an energy storage battery according to an embodiment of the present application.
In the figure, 1, a fire protection device; 10. a protective body; 11. a vertical portion; 111. a battery case; 1111. a chute; 1112. a stopper; 12. a horizontal portion; 121. a cooling tank; 122. an ultrasonic oscillation source; 20. an ejection assembly; 21. a control mechanism; 211. a detection unit; 2111. a back pressure valve; 2112. a thermal runaway detector; 212. a pushing unit; 2121. a sleeve; 2122. a coil spring; 2123. a push rod; 22. an ejection mechanism; 221. a liquid-cooled air bag; 2211. a roller; 222. an energy storage battery pack; 2221. a positive electrode; 2222. a negative electrode; 2223. a flow gathering packet top cover; 223. a first connection unit; 2231. a first current connector; 2232. a first cable; 224. a second connection unit; 2241. a second current connector; 2242. a second cable; 30. an energy storage system bus; 40. a first direction; 50. a second direction.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a fire protection device 1 for an energy storage battery according to the present application includes a protection body 10 and at least one ejection assembly 20; the protection main body 10 comprises a vertical part 11 and a horizontal part 12, one end of the horizontal part 12 is connected with the outer side wall close to the bottom end of the vertical part 11, at least one battery groove 111 is formed in one side, facing the horizontal part 12, of the vertical part 11, the ejection assemblies 20 are arranged in one-to-one correspondence with the battery grooves 111, the ejection assemblies 20 are contained in the battery grooves 111, the top surface of the horizontal part 12 is provided with a pair of cooling grooves 121, and cooling liquid is contained in the cooling grooves 121.
Specifically, the vertical portion 11 and the horizontal portion 12 are connected to form an L-shaped protective body 10, and the horizontal portion 12 is located on the right side of the vertical portion 11, taking the orientation shown in fig. 1 as an example. Wherein, the vertical part 11 and the horizontal part 12 are both in a cuboid shape.
The fire protection device 1 provided in this embodiment may include a plurality of ejection assemblies 20, taking the orientation shown in fig. 1 as an example, a plurality of battery slots 111 are formed on the right side of the vertical portion 11, the plurality of battery slots 111 are disposed at intervals along the height direction of the vertical portion 11, the battery slots 111 are disposed in one-to-one correspondence with the ejection assemblies 20, and the ejection assemblies 20 are accommodated in the battery slots 111.
The number of battery slots 111 is substantially identical to the number of ejection assemblies 20.
Illustratively, the cooling fluid may be perfluoro hexanone; of course, water may be used as the cooling liquid.
Wherein, the ejection assembly 20 comprises a control mechanism 21 and an ejection mechanism 22, one end of the control mechanism 21 is connected with the inner side wall of the battery groove 111, the other end of the control mechanism 21 is abutted with the outer wall of the ejection mechanism 22, and the ejection mechanism 22 can move relative to the control mechanism 21; the control mechanism 21 is used for monitoring the temperature of the battery tank 111 and the conduction pressure parameter of the ejection mechanism 22 to the control mechanism 21, and when the temperature in the battery tank 111 reaches a preset temperature or a preset pressure value, the control mechanism 21 pushes the ejection mechanism 22 to eject the battery tank 111 to fall into the cooling tank 121; by arranging the ejection mechanism 22, a large amount of heat generated by thermal runaway of the ejection mechanism 22 is prevented from spreading to the adjacent ejection mechanism 22, so that the use safety is improved; in addition, by providing the cooling liquid, the cooling liquid is used for cooling and blocking radiant heat of the thermal runaway ejection mechanism 22 that falls into the cooling tank 121.
The use process of the fire protection device 1 provided in this embodiment is as follows: when the control mechanism 21 detects that the temperature in the battery tank 111 reaches the preset temperature or the pressure value reaches the preset pressure value, the control mechanism 21 pushes the ejection mechanism 22 to eject the battery tank 111 and drop into the cooling tank 121, at this time, the ejected ejection mechanism 22 is immersed in the cooling liquid, and the cooling liquid cools and blocks the ejected ejection mechanism 22 from radiant heat.
With continued reference to fig. 1 and 2, in the present embodiment, the ejection mechanism 22 includes a liquid cooling air bag 221, an energy storage battery pack 222, a first connection unit 223 and a second connection unit 224, wherein the liquid cooling air bag 221 contains a perfluorinated hexanone coolant, the energy storage battery pack 222 is contained in the liquid cooling air bag 221, a positive electrode 2221 and a negative electrode 2222 are arranged on the energy storage battery pack 222, the positive electrode 2221 and the negative electrode 2222 are arranged at intervals along a first direction 40 of the liquid cooling air bag 221, and one ends of the positive electrode 2221 and the negative electrode 2222, which are far away from the energy storage battery pack 222, extend to the outside of the liquid cooling air bag 221 along a second direction 50 of the liquid cooling air bag 221; one end of the first connection unit 223 is connected with the positive electrode of the energy storage system bus bar 30 arranged on the inner side wall of the battery groove 111 in a pluggable manner, and the other end of the first connection unit 223 is connected with the extending end of the positive electrode 2221; one end of the second connection unit 224 is connected with the negative electrode of the energy storage system bus 30 in a pluggable manner, and the other end of the second connection unit 224 is connected with the extending end of the negative electrode 2222; by placing the perfluorinated hexanone coolant in the liquid cooling bladder 221, the perfluorinated hexanone vapor pressure is 25 times that of the ionized water, and sufficient pressure will be generated after the perfluorinated hexanone coolant is vaporized to drive the control mechanism 21; meanwhile, the perfluorinated hexanone cooling liquid is insulating liquid, has no influence on the surrounding running energy storage battery pack 222, and can assist in removing carbonized particles caused by the combustion of the energy storage battery pack 222.
Specifically, taking the orientation shown in fig. 2 as an example, the positive electrode 2221 and the negative electrode 2222 are disposed on the right side of the energy storage cell pack 222.
The liquid cooling air bag 221 may have a rectangular cross-sectional shape, a trapezoid or other multi-deformation cross-sectional shape, which is perpendicular to the horizontal plane, and the present embodiment is not limited thereto.
For convenience of explanation, the liquid-cooled air bag 221 will be described below with a rectangular cross-sectional shape as an example.
The first direction 40 of the liquid cooling bladder 221 is the height direction of the liquid cooling bladder 221, and the second direction 50 of the liquid cooling bladder 221 is the longitudinal direction of the liquid cooling bladder 221.
By accommodating the energy storage battery pack 222 in the liquid cooling air bag 221 containing the perfluorinated hexanone cooling liquid, the perfluorinated hexanone cooling liquid plays roles of cooling, insulating and protecting the energy storage battery pack 222 when the energy storage battery pack 222 works normally; when the temperature of the energy storage battery pack 222 is abnormal (namely, the temperature exceeds 100 ℃), the perfluorinated hexanone cooling liquid is changed into steam and generates huge pressure, firstly, the generated pressure is transmitted to the control mechanism 21, and the control mechanism 21 pushes the firing ejection mechanism 22 to eject; secondly, the perfluorinated hexanone cooling liquid in the liquid cooling air bag 221 flows into the energy storage battery pack 222 to extinguish fire, so as to achieve the purpose of preventing the outer shell of the surrounding energy storage battery pack 222 from being damaged due to high temperature of fire.
Further, in the present embodiment, the first connection unit 223 includes a first current connector 2231 and a first cable 2232, the first current connector 2231 is connected to one end of the first cable 2232, one end of the first current connector 2231 facing away from the first cable 2232 is connected to the positive electrode of the energy storage system bus 30 in a pluggable manner, and one end of the first cable 2232 facing away from the first current connector 2231 is connected to the protruding end of the positive electrode 2221; the second connection unit 224 includes a second current connector 2241 and a second cable 2242, where the second current connector 2241 is connected to one end of the second cable 2242, one end of the second current connector 2241 away from the second cable 2242 is connected to the negative electrode of the energy storage system bus 30 in a pluggable manner, and one end of the second cable 2242 away from the second current connector 2241 is connected to the protruding end of the negative electrode 2222; by providing both the first current connector 2231 and the second current connector 2241 to be removably connected to the energy storage system bus bar 30, the resistance of the ejection mechanism 22 during ejection is reduced, so as to facilitate ejection of the ejection mechanism 22.
Wherein the energy storage system bus 30 is used to charge or discharge the energy storage battery pack 222.
Further, in the present embodiment, at least two pairs of rollers 2211 are disposed at the bottom end of the liquid cooling air bag 221, and the two pairs of rollers 2211 are disposed at intervals along the second direction 50; the inner bottom plate of the battery groove 111 is provided with a chute 1111 which is matched with the roller 2211, the chute 1111 extends along the second direction 50, the roller 2211 is inserted into the chute 1111, and the roller 2211 can slide along the chute 1111; by providing the roller 2211, the ejection speed of the ejection mechanism 22 is thereby further improved.
Specifically, taking the orientation shown in fig. 2 as an example, the chute 1111 is located at the lower portion of the liquid cooling bladder 221.
Each pair of rollers 2211 includes two rollers 2211, the two rollers 2211 are oppositely arranged, two sliding grooves 1111 are formed in an inner bottom plate of the battery groove 111, the two sliding grooves 1111 are oppositely and parallelly arranged, and the rollers 2211 are arranged in one-to-one correspondence with the sliding grooves 1111.
Further, in the present embodiment, a stopper 1112 is disposed in the chute 1111, and when the energy storage battery pack 222 is operating normally, the stopper 1112 is located at one side of the roller 2211 away from the control mechanism 21, and the stopper 1112 abuts against the peripheral wall of the roller 2211; by providing the stopper 1112, the stopper 1112 is used to secure the energy storage battery pack 222 during normal operation.
Wherein the height of the stop 1112 is less than the radius of the roller 2211.
Further, in the present embodiment, the cross-sectional shape of the stopper 1112 is a right triangle, and when the energy storage battery pack 222 is operating normally, the inclined surface of the stopper 1112 abuts against the outer peripheral wall of the roller 2211.
Of course, the cross-sectional shape of the stopper 1112 may also be rectangular or trapezoidal.
With continued reference to fig. 2, in this embodiment, the end of the energy storage battery pack 222 facing away from the positive electrode 2221 or the negative electrode 2222 is provided with a current collecting pack top cover 2223.
Specifically, taking the orientation shown in fig. 2 as an example, the aggregate pack top cover 2223 is disposed on the left side of the energy storage battery pack 222. Wherein, gather and flow packet top cap 2223 adopts toughness strong, heat-conduction ability high material.
Illustratively, the aggregate packet header 2223 may be copper; of course, the top cover 2223 may also be made of aluminum alloy. In the realizable mode that the top cover 2223 of the flow gathering packet is made of copper, the copper has the advantages of strong toughness and high heat conduction capability, and when the temperature of the energy storage battery pack 222 is too high (i.e. the temperature exceeds 100 ℃), the top cover 2223 of the flow gathering packet conducts heat to the liquid cooling air bag 221 so as to promote the perfluorinated hexanone cooling liquid to form perfluorinated hexanone steam; in addition, the polyflux pack top cap 2223 facilitates inward ejection and the introduction of the perfluorinated hexanone coolant into the energy storage battery pack 222 for fire suppression.
Further, in the present embodiment, the control mechanism 21 includes a detection unit 211 and a pushing unit 212, one end of the detection unit 211 is connected with the inner side wall of the battery slot 111, the other end of the detection unit 211 is used for being abutted with the outer side wall of the ejection mechanism 22, one end of the pushing unit 212 is connected with the inner side wall of the battery slot 111, and the other end of the pushing unit 212 is used for being abutted with the ejection mechanism 22; the detection unit 211 is in driving connection with the pushing unit 212; the detecting unit 211 is used for monitoring the temperature of the battery container 111 and the conduction pressure parameter of the ejection mechanism 22 to the detecting unit 211, when the temperature in the battery container 111 reaches the preset temperature or the pressure value reaches the preset pressure value, the detecting unit 211 drives the pushing unit 212, and the pushing unit 212 ejects the ejection mechanism 22 out of the battery container 111.
Specifically, one end of the detection unit 211 is connected to the inner side wall of the battery container 111, and when the energy storage battery pack 222 works normally, the other end of the detection unit 211 abuts against the outer side wall of the liquid cooling air bag 221; one end of the pushing unit 212 is connected to the inner side wall of the battery container 111, and when the energy storage battery pack 222 works normally, the other end of the pushing unit 212 abuts against the roller 2211 located at the left side.
Taking the orientation shown in fig. 2 as an example, the detection unit 211 is located at the upper portion of the pushing unit 212.
Further, in the present embodiment, the detection unit 211 includes a back pressure valve 2111 and a thermal runaway detector 2112, the thermal runaway detector 2112 is connected to one end of the back pressure valve 2111, a side of the thermal runaway detector 2112 facing away from the back pressure valve 2111 is connected to an inner side wall of the battery container 111, and an end of the back pressure valve 2111 facing away from the thermal runaway detector 2112 is abutted to an outer side wall of the ejection mechanism 22; the thermal runaway detector 2112 is drivingly connected to the push unit 212; the thermal runaway detector 2112 is used for monitoring the temperature of the battery jar 111 and the conduction pressure parameter of the ejection mechanism 22 to the counter pressure valve 2111, and when the temperature in the battery jar 111 reaches the preset temperature or the pressure value reaches the preset pressure value, the thermal runaway detector 2112 drives the pushing unit 212 to eject the ejection mechanism 22 out of the battery jar 111.
Specifically, when the energy storage battery pack 222 is operating normally, one end of the back pressure valve 2111 facing away from the thermal runaway detector 2112 abuts against the outer sidewall of the liquid cooling air bag 221.
In use, when the temperature of the energy storage battery pack 222 is abnormal (i.e. the temperature exceeds 100 ℃), the perfluorinated hexanone cooling liquid will become steam and generate huge pressure, the generated pressure conduction value is opposite to the pressure valve 2111 and the thermal runaway detector 2112, when the thermal runaway detector 2112 detects that the temperature in the battery tank 111 reaches the preset temperature or the pressure reaches the preset pressure value, the thermal runaway detector 2112 drives the pushing unit 212 to push the ejection mechanism 22 out of the battery tank 111, and the ejection mechanism 22 falls into the cooling tank 121.
When the thermal runaway detector 2112 detects that the temperature in the battery container 111 reaches the preset temperature or the pressure reaches the preset pressure, the moving contact on the thermal runaway detector 2112 automatically ejects, and the pushing unit 212 is driven by a mechanical or electrical signal to complete the ejection operation.
Further, in the present embodiment, the pushing unit 212 includes a sleeve 2121, a coil spring 2122 and a push rod 2123, the coil spring 2122 is accommodated in the sleeve 2121, a first end of the coil spring 2122 is connected to an inner wall of the sleeve 2121, a second end of the coil spring 2122 extends along a central axis direction of the sleeve 2121, one end of the push rod 2123 is connected to the second end of the coil spring 2122, and the other end of the push rod 2123 extends along the central axis direction of the sleeve 2121 and is used for abutting against the ejection mechanism 22; when the energy storage battery pack 222 is operating normally, the coil spring 2122 is in a compressed state.
Specifically, the central axis of coil spring 2122 is parallel to the central axis of sleeve 2121, and in some implementations, the central axis of coil spring 2122 is disposed collinear with the central axis of sleeve 2121.
When the energy storage battery pack 222 is operating normally, one end of the push rod 2123 facing away from the coil spring 2122 abuts against the outer circumferential wall of the roller 2211 located on the left side.
In use, when the thermal runaway detector 2112 detects that the temperature or pressure in the battery compartment 111 reaches the preset temperature or pressure value, the thermal runaway detector 2112 drives the coil spring 2122 to transmit a pushing force to the push rod 2123 (i.e., a restoring force of the coil spring 2122), the push rod 2123 moves rightward along the sleeve 2121, and the push rod 2123 pushes the roller 2211 to slide rightward along the sliding slot 1111 beyond the stopper 1112, so that the ejection mechanism 22 slides out of the battery compartment 111 and falls into the cooling slot 121.
With continued reference to fig. 1, in this embodiment, an ultrasonic oscillation source 122 is disposed in the cooling tank 121, and the ultrasonic oscillation source 122 is used to break the surface tension of the energy storage battery pack 222 falling into the cooling tank 121 in cooperation with the cooling liquid; by providing the ultrasonic oscillation source 122, thereby, the thermal runaway of the energy storage battery pack 222 is further effectively controlled.
Specifically, the ultrasonic vibration source 122 helps the cooling liquid to quickly break the surface tension of the energy storage battery pack 222 falling into the cooling tank 121, quickly infiltrate into the inside of the energy storage battery pack 222 through the broken crack, and plays roles of cooling, choking and radiant heat blocking to the energy storage battery pack 222.
The use process of the fire protection device 1 for an energy storage battery provided in this embodiment is as follows: when the temperature of the energy storage battery pack 222 is abnormal (i.e. the temperature exceeds 100 ℃), the perfluorinated hexanone cooling liquid in the liquid cooling air bag 221 is changed into steam and generates huge pressure, the generated pressure conduction value is opposite to the pressure valve 2111 and the thermal runaway detector 2112, when the thermal runaway detector 2112 detects that the temperature in the battery pack 111 reaches the preset temperature or the pressure reaches the preset pressure value, the thermal runaway detector 2112 drives the pushing unit 212 to push the ejection mechanism 22 out of the battery pack 111, the ejection mechanism 22 falls into the cooling tank 121, at the moment, the ultrasonic oscillation source 122 helps the cooling liquid to quickly break the surface tension of the energy storage battery pack 222 falling into the cooling tank 121, and the perfluorinated hexanone cooling liquid quickly permeates into the interior of the energy storage battery pack 222 through broken cracks, so that the effects of cooling, suffocating and radiation heat blocking are achieved on the energy storage battery pack 222.
The application provides a fire protection device 1 for an energy storage battery, which comprises a protection main body 10 and at least one ejection assembly 20; the protection main body 10 comprises a vertical part 11 and a horizontal part 12, one end of the horizontal part 12 is connected with the outer side wall close to the bottom end of the vertical part 11, one side of the vertical part 11 facing the horizontal part 12 is provided with at least one battery groove 111, ejection assemblies 20 are arranged in a one-to-one correspondence manner with the battery grooves 111, the ejection assemblies 20 are accommodated in the battery grooves 111, the top surface of the horizontal part 12 is provided with a pair of cooling grooves 121, and cooling liquid is contained in the cooling grooves 121; the ejection assembly 20 comprises a control mechanism 21 and an ejection mechanism 22, one end of the control mechanism 21 is connected with the inner side wall of the battery groove 111, the other end of the control mechanism 21 is abutted with the outer wall of the ejection mechanism 22, and the ejection mechanism 22 can move relative to the control mechanism 21; the control mechanism 21 is used for monitoring the temperature of the battery tank 111 and the conduction pressure parameter of the ejection mechanism 22 to the control mechanism 21, and when the temperature in the battery tank 111 reaches a preset temperature or a preset pressure value, the control mechanism 21 pushes the ejection mechanism 22 to eject the battery tank 111 to fall into the cooling tank 121; by providing the ejector mechanism 22, a large amount of heat generated by thermal runaway of the ejector mechanism 22 is prevented from spreading to the adjacent ejector mechanism 22, and the risk of fire of the battery pack is eliminated, thereby improving the use safety.
The fire protection device 1 provided by the application has the following advantages: the device has simple structure, easy manufacture and convenient operation.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present application and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present application.
Claims (12)
1. The utility model provides a fire protection device for energy storage battery which characterized in that: comprising a protective body and at least one ejection assembly;
the protection main body comprises a vertical part and a horizontal part, one end of the horizontal part is connected with the outer side wall close to the bottom end of the vertical part, at least one battery groove is formed in one side of the vertical part, which faces the horizontal part, the ejection components are arranged in a one-to-one correspondence manner with the battery grooves, the ejection components are accommodated in the battery grooves, the top surface of the horizontal part is provided with a pair of cooling grooves, and cooling liquid is contained in the cooling grooves;
the ejection assembly comprises a control mechanism and an ejection mechanism, one end of the control mechanism is connected with the inner side wall of the battery groove, the other end of the control mechanism is abutted with the outer wall of the ejection mechanism, and the ejection mechanism can move relative to the control mechanism;
the control mechanism is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the control mechanism, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the control mechanism pushes the ejection mechanism to eject the battery tank to fall into the cooling tank.
2. The fire protection device for an energy storage battery according to claim 1, wherein: the ejection mechanism comprises a liquid cooling air bag, an energy storage battery pack, a first connecting unit and a second connecting unit, wherein perfluorinated hexanone cooling liquid is contained in the liquid cooling air bag, the energy storage battery pack is contained in the liquid cooling air bag, a positive electrode and a negative electrode are arranged on the energy storage battery pack, the positive electrode and the negative electrode are arranged at intervals along a first direction of the liquid cooling air bag, and one ends, far away from the energy storage battery pack, of the positive electrode and the negative electrode extend to the outside of the liquid cooling air bag along a second direction of the liquid cooling air bag;
one end of the first connecting unit is connected with the positive electrode of the energy storage system bus arranged on the inner side wall of the battery tank in a pluggable manner, and the other end of the first connecting unit is connected with the extending end of the positive electrode;
one end of the second connecting unit is connected with the negative electrode of the energy storage system bus in a pluggable mode, and the other end of the second connecting unit is connected with the extending end of the negative electrode.
3. The fire protection device for an energy storage battery according to claim 2, wherein: the first connecting unit comprises a first current connector and a first cable, wherein the first current connector is connected with one end of the first cable, one end of the first current connector, which is away from the first cable, is connected with the positive electrode of the energy storage system bus in a pluggable manner, and one end of the first cable, which is away from the first current connector, is connected with the extending end of the positive electrode;
the second connecting unit comprises a second current connector and a second cable, wherein the second current connector is connected with one end of the second cable, one end, deviating from the second cable, of the second current connector is connected with the negative electrode of the energy storage system bus in a pluggable manner, and one end, far away from the second current connector, of the second cable is connected with the extending end of the negative electrode.
4. A fire protection device for an energy storage battery according to any one of claims 2 to 3, wherein: at least two pairs of rollers are arranged at the bottom end of the liquid cooling air bag, and the two pairs of rollers are arranged at intervals along the second direction;
the inner bottom plate of the battery groove is provided with a sliding groove matched with the roller, the sliding groove extends along the second direction, the roller is inserted into the sliding groove, and the roller can slide along the sliding groove.
5. The fire protection device for an energy storage battery according to claim 4, wherein: be provided with the backstop spare in the spout, works as when energy storage battery package normally works, the backstop spare is located the gyro wheel is kept away from control mechanism's one side, the backstop spare with the periphery wall butt of gyro wheel.
6. The fire protection device for an energy storage battery according to claim 5, wherein: the cross-sectional shape of backstop spare is right triangle, when energy storage battery package normal operating, the inclined plane of backstop spare with the periphery wall butt of gyro wheel.
7. The fire protection device for an energy storage battery according to claim 2, wherein: and a current collecting pack top cover is arranged at one end of the energy storage battery pack, which is away from the positive electrode or the negative electrode.
8. The fire protection device for an energy storage battery according to claim 7, wherein: the flow gathering bag top cover is made of copper.
9. The fire protection device for an energy storage battery according to claim 1, wherein: the control mechanism comprises a detection unit and a pushing unit, one end of the detection unit is connected with the inner side wall of the battery groove, the other end of the detection unit is used for being abutted with the outer side wall of the ejection mechanism, one end of the pushing unit is connected with the inner side wall of the battery groove, and the other end of the pushing unit is used for being abutted with the ejection mechanism;
the detection unit is in driving connection with the pushing unit;
the detection unit is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the detection unit, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the detection unit drives the pushing unit, and the pushing unit ejects the ejection mechanism out of the battery tank.
10. The fire protection device for an energy storage battery according to claim 9, wherein: the detection unit comprises a reverse pressure valve and a thermal runaway detector, wherein the thermal runaway detector is connected with one end of the reverse pressure valve, one side of the thermal runaway detector, which is away from the reverse pressure valve, is connected with the inner side wall of the battery jar, and one end of the reverse pressure valve, which is away from the thermal runaway detector, is abutted with the outer side wall of the ejection mechanism;
the thermal runaway detector is in driving connection with the pushing unit;
the thermal runaway detector is used for monitoring the temperature of the battery tank and the conduction pressure parameter of the ejection mechanism to the reverse pressure valve, and when the temperature in the battery tank reaches a preset temperature or a preset pressure value, the thermal runaway detector drives the pushing unit to eject the ejection mechanism out of the battery tank.
11. A fire protection device for an energy storage cell according to any one of claims 9 to 10, wherein: the pushing unit comprises a sleeve, a spiral spring and a push rod, wherein the spiral spring is accommodated in the sleeve, a first end of the spiral spring is connected with the inner wall of the sleeve, a second end of the spiral spring extends along the central axis direction of the sleeve, one end of the push rod is connected with the second end of the spiral spring, and the other end of the push rod extends along the central axis direction of the sleeve and is used for being abutted with the ejection mechanism;
when the energy storage battery pack works normally, the spiral spring is in a compressed state.
12. The fire protection device for an energy storage battery according to claim 2, wherein: an ultrasonic oscillation source is arranged in the cooling tank and is used for being matched with the cooling liquid to destroy the surface tension of the energy storage battery pack falling into the cooling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310003742.9A CN116759688A (en) | 2023-01-03 | 2023-01-03 | Fire protection device for energy storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310003742.9A CN116759688A (en) | 2023-01-03 | 2023-01-03 | Fire protection device for energy storage battery |
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| CN116759688A true CN116759688A (en) | 2023-09-15 |
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| CN202310003742.9A Pending CN116759688A (en) | 2023-01-03 | 2023-01-03 | Fire protection device for energy storage battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117199624A (en) * | 2023-11-07 | 2023-12-08 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
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- 2023-01-03 CN CN202310003742.9A patent/CN116759688A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117199624A (en) * | 2023-11-07 | 2023-12-08 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
| CN117199624B (en) * | 2023-11-07 | 2024-01-30 | 温州鑫泰新材料股份有限公司 | Heat conduction and heat dissipation cover plate for power energy storage |
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