CN116526050B - Energy storage power supply with explosion-proof function and explosion-proof method - Google Patents
Energy storage power supply with explosion-proof function and explosion-proof method Download PDFInfo
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- CN116526050B CN116526050B CN202310779670.7A CN202310779670A CN116526050B CN 116526050 B CN116526050 B CN 116526050B CN 202310779670 A CN202310779670 A CN 202310779670A CN 116526050 B CN116526050 B CN 116526050B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6572—Peltier elements or thermoelectric devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/242—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 against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
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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 application relates to an energy storage power supply with an explosion-proof function and an explosion-proof method, comprising an explosion-proof outer shell and a battery inner shell, wherein a battery module is arranged in the battery inner shell, a buffer water bag is arranged at the front side of the inside of the explosion-proof outer shell, and a refrigerating assembly is arranged on the explosion-proof outer shell; the upper side surface, the lower side surface, the left side surface and the right side surface of the battery inner shell are provided with cooling water channels; the rear surface of the battery inner shell is provided with a pressure release window, an interface plate and a plurality of piston grooves, a piston is arranged in each piston groove, a guide rod is arranged on each piston, the guide rods are fixedly connected with the explosion-proof outer shell, and buffer springs are sleeved on the guide rods; an external circuit board is embedded on the explosion-proof shell and is electrically connected with the interface board through a flexible flat cable; not only can solve the problem of collision of the battery module in the moving process, but also can better perform water-cooling heat dissipation, and has the functions of enhancing the explosion prevention of the shell, automatic fire extinguishing and flame back prevention, and the whole structure is reasonable and compact and has strong explosion-proof performance.
Description
Technical Field
The application relates to the technical field of energy storage power supplies, in particular to an energy storage power supply with an explosion-proof function and an explosion-proof method.
Background
The energy storage power supply is a high-capacity mobile power supply, can store electric energy and is used for various electric appliance charging, lighting, cooking and other scenes. The mobile power system has various data interfaces, and supports the charging of various products in a mobile power scene, such as a mobile phone, a notebook computer, a refrigerator and the like. The portable energy storage power supply mainly comprises an outdoor camping, a caravan traveling, an outdoor live broadcast, an outdoor construction, an outdoor shooting, an emergency standby power supply and the like;
at present, an energy storage power supply is a novel energy source, the application prospect is quite wide, but the core of the energy storage power supply is a battery pack, the explosion prevention of the battery pack is still one of the core problems concerned by people in applying the energy storage power supply, no better explosion prevention means exists at present, the actual effect is poor based on the explosion prevention measures of cooling and radiating and reinforcing the shell, and an energy storage power supply with an explosion prevention function and an explosion prevention method which can better prevent explosion are needed.
Disclosure of Invention
The application aims to solve the technical problems of the prior art, and provides an energy storage power supply with an explosion-proof function and an energy storage power supply explosion-proof method with the explosion-proof function.
The technical scheme adopted for solving the technical problems is as follows:
an energy storage power supply with an explosion-proof function is constructed, wherein the energy storage power supply comprises an explosion-proof outer shell and a battery inner shell which is arranged in the explosion-proof outer shell in a front-back sliding manner, a battery module is arranged in the battery inner shell, a buffer water bag is arranged on the front side of the inside of the explosion-proof outer shell, and a refrigerating assembly for refrigerating the buffer water bag is arranged on the explosion-proof outer shell; the upper side surface, the lower side surface, the left side surface and the right side surface of the battery inner shell are respectively provided with a plurality of cooling water channels communicated with the buffer water bag; the rear side surface of the battery inner shell is provided with a pressure release window, an interface board electrically connected with the battery module and a plurality of piston grooves communicated with the cooling water channel in a one-to-one correspondence manner, a piston is arranged in the piston groove, a guide rod is arranged on the piston and fixedly connected with the rear side wall of the explosion-proof outer shell, a buffer spring is sleeved on the guide rod, one end of the buffer spring is fixedly connected with the explosion-proof outer shell, and the other end of the buffer spring is fixedly connected with the battery inner shell; an external circuit board is embedded on the explosion-proof housing, and the external circuit board is electrically connected with the interface board through a flexible flat cable.
The energy storage power supply with the explosion-proof function provided by the application has the advantages that the guide rod is hollow, and one end of the guide rod is arranged on the explosion-proof shell in a penetrating way; a temperature sensor is arranged in one end, far away from the explosion-proof shell, of the guide rod; the energy storage power supply comprises a control main board, and the control main board controls the operation of the refrigeration assembly according to the detection values of the temperature sensors.
The application relates to an energy storage power supply with an explosion-proof function, wherein the front side of an explosion-proof shell is provided with a mounting groove for mounting a refrigeration component and a cover plate for sealing the mounting groove; the inner wall of the mounting groove is provided with a heat insulation plate; the buffer water bag is tightly adhered to the inner wall of the front side of the explosion-proof shell and is opposite to the mounting groove.
The application relates to an energy storage power supply with an explosion-proof function, wherein a refrigerating component is a semiconductor refrigerating sheet, and a cooling fan for cooling a heating surface of the semiconductor refrigerating sheet is arranged on a cover plate.
The energy storage power supply with the explosion-proof function provided by the application has the advantages that the piston is positioned in the middle of the guide rod; the guide rod deviates from the one end of explosion-proof housing is provided with elastic supporting plug, be provided with a plurality of water holes that supply water and pass through on the supporting plug.
The application relates to an energy storage power supply with an explosion-proof function, wherein a plurality of support plugs are arranged on a guide rod.
The application relates to an energy storage power supply with an explosion-proof function, wherein a travelling wheel is arranged at the bottom of an inner shell of a battery, the travelling wheel is made of rubber materials, and a positioning groove matched with the travelling wheel is arranged on the inner bottom surface of an outer explosion-proof shell.
An energy storage power supply explosion-proof method with an explosion-proof function is applied to the energy storage power supply with the explosion-proof function, and comprises the following steps:
under the normal working state, the position balance of the battery inner shell in the front-back direction is kept by virtue of the forces of a plurality of buffer springs and buffer water bags, the position balance of the battery inner shell in the up-down direction and the left-right direction is kept by virtue of a plurality of pistons, and when external impact force is met, the battery inner shell is buffered according to the corresponding direction; the refrigeration assembly is started as required to cool the buffer water bag, so as to cool water in the cooling water channel, and further cool the inner shell of the battery; the battery module is powered to the outside by means of the interface board, the flexible flat cable and the external circuit board;
when the battery module is burnt or exploded, the air pressure in the battery inner shell is rapidly increased, when the air pressure is increased to a set value, the pressure relief window is broken, the pressure relief window is punched and impacted on the rear side surface of the explosion-proof outer shell, the reaction force borne by the battery inner shell can enable the battery inner shell to move towards the buffering water bag and impact the buffering water bag, the buffering water bag deforms to enable internal water to be pressed into the cooling water channel and extrude the piston, when the battery inner shell moves to the piston to be separated from the piston groove, the water in the buffering water bag is punched between the rear side surface of the battery inner shell and the rear side inner wall of the explosion-proof outer shell through the cooling water channel, and part of water is punched into the battery inner shell through the punched pressure relief window to extinguish the fire of the battery module; if the air pressure in the inner battery shell is reduced, the buffer water bag and the buffer spring recover to deform at the moment, so that the distance between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is reduced, and water between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is pressed into the inner battery shell from the pressure relief window to soak the battery module, thereby preventing afterburning.
The application has the beneficial effects that: under the normal working state, the position balance of the battery inner shell in the front-back direction is kept by virtue of the forces of a plurality of buffer springs and buffer water bags, the position balance of the battery inner shell in the up-down direction and the left-right direction is kept by virtue of a plurality of pistons, and when external impact force is met, the battery inner shell is buffered according to the corresponding direction; the refrigeration assembly is started as required to cool the buffer water bag, so as to cool water in the cooling water channel, and further cool the inner shell of the battery; the battery module is powered to the outside by means of the interface board, the flexible flat cable and the external circuit board;
when the battery module is burnt or exploded, the air pressure in the battery inner shell is rapidly increased, when the air pressure is increased to a set value, the pressure relief window is broken, the pressure relief window is punched and impacted on the rear side surface of the explosion-proof outer shell, the reaction force borne by the battery inner shell can enable the battery inner shell to move towards the buffering water bag and impact the buffering water bag, the buffering water bag deforms to enable internal water to be pressed into the cooling water channel and extrude the piston, when the battery inner shell moves to the piston to be separated from the piston groove, the water in the buffering water bag is punched between the rear side surface of the battery inner shell and the rear side inner wall of the explosion-proof outer shell through the cooling water channel, and part of water is punched into the battery inner shell through the punched pressure relief window to extinguish the fire of the battery module; if the air pressure in the inner battery shell is reduced, the buffer water bag and the buffer spring recover to deform, so that the distance between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is reduced, and water between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is pressed into the inner battery shell from the broken pressure relief window to soak the battery module, thereby preventing afterburning;
by the method, the problem of collision of the battery module in the moving process can be solved, water cooling and heat dissipation can be well carried out, the explosion-proof and automatic fire extinguishing functions and the anti-reburning functions of the shell are enhanced, the whole structure is reasonable and compact, the explosion-proof performance is strong, and the cost is relatively low.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the present application will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained by those skilled in the art without inventive effort:
fig. 1 is a cross-sectional view of an energy storage power supply with explosion-proof function according to a preferred embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present application, based on the embodiments of the present application.
The energy storage power supply with the explosion-proof function in the preferred embodiment of the application comprises an explosion-proof outer shell 1 and a battery inner shell 2 which is arranged in the explosion-proof outer shell 1 in a sliding way back and forth manner, wherein a battery module 3 is arranged in the battery inner shell 2, a buffer water bag 4 is arranged at the front side of the inside of the explosion-proof outer shell 1, and a refrigeration component 5 for refrigerating the buffer water bag 4 is arranged on the explosion-proof outer shell 1; the upper side surface, the lower side surface, the left side surface and the right side surface of the inner battery shell 2 are provided with a plurality of cooling water channels 20 communicated with the buffer water bags 4; the rear side surface of the battery inner shell 2 is provided with a pressure release window 21 (when the battery inner shell is not broken, the window is closed), an interface board 22 (the surface is coated with insulating glue and waterproof) electrically connected with the battery module 3 and a plurality of piston grooves 23 which are communicated with the cooling water channels 20 in a one-to-one correspondence manner, a piston 230 is arranged in each piston groove 23, a guide rod 231 is arranged on each piston 230, the guide rod 231 is fixedly connected with the rear side wall of the explosion-proof outer shell 1, a buffer spring 232 is sleeved on each guide rod 231, one end of each buffer spring 232 is fixedly connected with the explosion-proof outer shell 1, and the other end of each buffer spring 232 is fixedly connected with the battery inner shell 2; an external circuit board 10 is embedded on the explosion-proof housing 1, and the external circuit board 10 is electrically connected with an interface board 22 through a flexible flat cable 6;
in a normal working state, the front-back direction position balance of the battery inner shell 2 is kept by virtue of the forces of the buffer springs 232 and the buffer water bags 4, the up-down and left-right direction position balance of the battery inner shell 2 is kept by virtue of the pistons 230, and when external impact force is met, the buffer is carried out according to the corresponding directions; the refrigeration assembly 5 is started according to the need (the temperature can be set to be higher than the temperature for starting, or the starting can be set to be started immediately or at regular time after starting), so as to cool the buffer water bag 4, further cool the water in the cooling water channel 20, and further cool the inner battery shell 2; the battery module 3 supplies power to the outside by means of the interface board 22, the flexible flat cable 6 and the external circuit board 10;
when the battery module 3 is burnt or exploded, the air pressure in the battery inner shell 2 is rapidly increased, the pressure relief window 21 is broken when the air pressure is increased to a set value, the air pressure is flushed out from the pressure relief window 21 and impacts on the rear side surface of the explosion-proof outer shell 1, the reaction force exerted by the battery inner shell 2 at the moment can enable the air pressure to move towards the buffer water bag 4 and impact the buffer water bag 4, the buffer water bag 4 deforms so that internal water is pressed into the cooling water channel 20 and presses the piston 230, when the battery inner shell 2 moves to the position that the piston 230 is separated from the piston groove 23, the water in the buffer water bag 4 is flushed out from the cooling water channel 20 to the position between the rear side surface of the battery inner shell 2 and the rear side inner wall of the explosion-proof outer shell 1, and part of the water is flushed into the battery inner shell 2 through the flushed out pressure relief window 21 to extinguish the fire of the battery module 3; if the air pressure in the inner battery shell 2 is reduced, the buffer water bag 4 and the buffer spring are deformed in a recovery mode, so that the distance between the rear side surface of the inner battery shell 2 and the rear side inner wall of the explosion-proof outer shell 1 is reduced, and water between the rear side surface of the inner battery shell 2 and the rear side inner wall of the explosion-proof outer shell 1 is pressed into the inner battery shell 2 from the burst pressure relief window 21 to soak the battery module 3, so that afterburning is prevented;
by the method, the problem of collision of the battery module in the moving process can be solved, water cooling and heat dissipation can be well carried out, the explosion-proof and automatic fire extinguishing functions and the anti-reburning functions of the shell are enhanced, the whole structure is reasonable and compact, the explosion-proof performance is strong, and the cost is relatively low.
Preferably, the guide rod 231 is hollow, and one end of the guide rod 231 is penetrated through the explosion-proof housing 1; a temperature sensor 233 is provided inside one end of the guide rod 231 remote from the explosion-proof housing; the energy storage power supply comprises a control main board 7, and the control main board 7 controls the operation of the refrigeration assembly 5 according to the detection values of the plurality of temperature sensors 233; structural design is reasonable, and the current temperature of detection battery module 3 of closely diversified that can be convenient improves space utilization.
Preferably, the front side of the explosion-proof housing 1 is provided with a mounting groove 11 for mounting the refrigeration assembly 5 and a cover plate 12 for sealing the mounting groove; the inner wall of the installation groove 11 is provided with a heat insulation plate 110; the buffer water bag 4 is tightly adhered to the inner wall of the front side of the explosion-proof shell 1 and is opposite to the mounting groove 11; by adopting the structural design, the buffer water bag 4 can be conveniently and rapidly refrigerated while the strength is ensured, the efficiency is high, and the wiring design is very convenient.
Preferably, the refrigeration assembly 5 is a semiconductor refrigeration sheet 50, and the cover plate 12 is provided with a heat radiation fan 51 for radiating heat from a heat generating surface of the semiconductor refrigeration sheet; of course, other existing refrigeration modes can be adopted, and simple existing component replacement based on the principle belongs to the protection scope of the application.
Preferably, the piston 230 is located at the middle of the guide bar 231; an elastic supporting plug 234 is arranged at one end of the guide rod 231, which is away from the explosion-proof shell 1, a plurality of water passing holes (not shown in the figure) for water to pass through are formed in the supporting plug 234, and the plurality of supporting plugs 234 are designed to ensure the elastic buffering performance and bring small resistance to the water passing; preferably, the support plugs 234 are provided in plurality on the guide bar 231.
Preferably, the bottom of the battery inner shell 2 is provided with a travelling wheel 24, the travelling wheel 24 is made of rubber material, and the inner bottom surface of the explosion-proof outer shell 1 is provided with a positioning groove 13 matched with the travelling wheel 24; the traveling wheels 24 are used for further sharing the bearing gravity of the guide rod 231, so that the overall reliability is ensured.
An energy storage power supply explosion-proof method with an explosion-proof function is applied to the energy storage power supply with the explosion-proof function, and comprises the following steps:
under the normal working state, the position balance of the battery inner shell in the front-back direction is kept by virtue of the forces of a plurality of buffer springs and buffer water bags, the position balance of the battery inner shell in the up-down direction and the left-right direction is kept by virtue of a plurality of pistons, and when external impact force is met, the battery inner shell is buffered according to the corresponding direction; the refrigeration assembly is started as required to cool the buffer water bag, so as to cool water in the cooling water channel, and further cool the inner shell of the battery; the battery module is powered to the outside by means of the interface board, the flexible flat cable and the external circuit board;
when the battery module is burnt or exploded, the air pressure in the battery inner shell is rapidly increased, when the air pressure is increased to a set value, the pressure relief window is broken, the pressure relief window is punched and impacted on the rear side surface of the explosion-proof outer shell, the reaction force borne by the battery inner shell can enable the battery inner shell to move towards the buffering water bag and impact the buffering water bag, the buffering water bag deforms to enable internal water to be pressed into the cooling water channel and extrude the piston, when the battery inner shell moves to the piston to be separated from the piston groove, the water in the buffering water bag is punched between the rear side surface of the battery inner shell and the rear side inner wall of the explosion-proof outer shell through the cooling water channel, and part of water is punched into the battery inner shell through the punched pressure relief window to extinguish the fire of the battery module; if the air pressure in the inner battery shell is reduced, the buffer water bag and the buffer spring recover to deform, so that the distance between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is reduced, and water between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is pressed into the inner battery shell from the broken pressure relief window to soak the battery module, thereby preventing afterburning;
by the method, the problem of collision of the battery module in the moving process can be solved, water cooling and heat dissipation can be well carried out, the explosion-proof and automatic fire extinguishing functions and the anti-reburning functions of the shell are enhanced, the whole structure is reasonable and compact, the explosion-proof performance is strong, and the cost is relatively low.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (8)
1. The energy storage power supply with the explosion-proof function is characterized by comprising an explosion-proof outer shell and a battery inner shell which is arranged in the explosion-proof outer shell in a front-back sliding manner, wherein a battery module is arranged in the battery inner shell, a buffer water bag is arranged on the front side of the inside of the explosion-proof outer shell, and a refrigerating assembly for refrigerating the buffer water bag is arranged on the explosion-proof outer shell; the upper side surface, the lower side surface, the left side surface and the right side surface of the battery inner shell are respectively provided with a plurality of cooling water channels communicated with the buffer water bag; the rear side surface of the battery inner shell is provided with a pressure release window, an interface board electrically connected with the battery module and a plurality of piston grooves communicated with the cooling water channel in a one-to-one correspondence manner, a piston is arranged in the piston groove, a guide rod is arranged on the piston and fixedly connected with the rear side wall of the explosion-proof outer shell, a buffer spring is sleeved on the guide rod, one end of the buffer spring is fixedly connected with the explosion-proof outer shell, and the other end of the buffer spring is fixedly connected with the battery inner shell; an external circuit board is embedded on the explosion-proof housing, and the external circuit board is electrically connected with the interface board through a flexible flat cable.
2. The energy storage power supply with the explosion-proof function according to claim 1, wherein the guide rod is hollow, and one end of the guide rod is arranged on the explosion-proof housing in a penetrating manner; a temperature sensor is arranged in one end, far away from the explosion-proof shell, of the guide rod; the energy storage power supply comprises a control main board, and the control main board controls the operation of the refrigeration assembly according to the detection values of the temperature sensors.
3. The energy storage power supply with explosion-proof function according to claim 2, wherein a mounting groove for mounting the refrigeration assembly and a cover plate for sealing the mounting groove are arranged on the front side of the explosion-proof housing; the inner wall of the mounting groove is provided with a heat insulation plate; the buffer water bag is tightly adhered to the inner wall of the front side of the explosion-proof shell and is opposite to the mounting groove.
4. The energy storage power supply with an explosion-proof function according to claim 3, wherein the refrigerating component is a semiconductor refrigerating sheet, and a heat radiation fan for radiating heat from a heat generating surface of the semiconductor refrigerating sheet is arranged on the cover plate.
5. The energy storage power supply with explosion-proof function according to any one of claims 1 to 4, wherein the piston is located in the middle of the guide rod; the guide rod deviates from the one end of explosion-proof housing is provided with elastic supporting plug, be provided with a plurality of water holes that supply water and pass through on the supporting plug.
6. The energy storage power supply with explosion-proof function according to claim 5, wherein the support plug is provided with a plurality of support plugs on the guide rod.
7. The energy storage power supply with an explosion-proof function according to claim 5, wherein a travelling wheel is arranged at the bottom of the battery inner shell, the travelling wheel is made of rubber materials, and a positioning groove matched with the travelling wheel is formed in the inner bottom surface of the explosion-proof outer shell.
8. An explosion-proof method of an energy storage power supply with an explosion-proof function, which is applied to the energy storage power supply with the explosion-proof function as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
under the normal working state, the position balance of the battery inner shell in the front-back direction is kept by virtue of the forces of a plurality of buffer springs and buffer water bags, the position balance of the battery inner shell in the up-down direction and the left-right direction is kept by virtue of a plurality of pistons, and when external impact force is met, the battery inner shell is buffered according to the corresponding direction; the refrigeration assembly is started as required to cool the buffer water bag, so as to cool water in the cooling water channel, and further cool the inner shell of the battery; the battery module is powered to the outside by means of the interface board, the flexible flat cable and the external circuit board;
when the battery module is burnt or exploded, the air pressure in the battery inner shell is rapidly increased, when the air pressure is increased to a set value, the pressure relief window is broken, the pressure relief window is punched and impacted on the rear side surface of the explosion-proof outer shell, the reaction force borne by the battery inner shell can enable the battery inner shell to move towards the buffering water bag and impact the buffering water bag, the buffering water bag deforms to enable internal water to be pressed into the cooling water channel and extrude the piston, when the battery inner shell moves to the piston to be separated from the piston groove, the water in the buffering water bag is punched between the rear side surface of the battery inner shell and the rear side inner wall of the explosion-proof outer shell through the cooling water channel, and part of water is punched into the battery inner shell through the punched pressure relief window to extinguish the fire of the battery module; if the air pressure in the inner battery shell is reduced, the buffer water bag and the buffer spring recover to deform at the moment, so that the distance between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is reduced, and water between the rear side surface of the inner battery shell and the rear side inner wall of the explosion-proof outer shell is pressed into the inner battery shell from the pressure relief window to soak the battery module, thereby preventing afterburning.
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