CN117244195A - Battery thermal runaway early warning system based on vibration signal detection - Google Patents

Battery thermal runaway early warning system based on vibration signal detection Download PDF

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Publication number
CN117244195A
CN117244195A CN202311342267.4A CN202311342267A CN117244195A CN 117244195 A CN117244195 A CN 117244195A CN 202311342267 A CN202311342267 A CN 202311342267A CN 117244195 A CN117244195 A CN 117244195A
Authority
CN
China
Prior art keywords
thermal runaway
cooling
control processor
system based
vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311342267.4A
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Chinese (zh)
Inventor
任东亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yantai Chungway New Energy Technology Co Ltd
Original Assignee
Yantai Chungway New Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yantai Chungway New Energy Technology Co Ltd filed Critical Yantai Chungway New Energy Technology Co Ltd
Priority to CN202311342267.4A priority Critical patent/CN117244195A/en
Publication of CN117244195A publication Critical patent/CN117244195A/en
Pending legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/28—Accessories for delivery devices, e.g. supports
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • 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
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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

Abstract

The utility model belongs to the technical field of lithium battery fires, and particularly relates to a battery thermal runaway early warning system based on vibration signal detection, which comprises a control processor, wherein the control processor is connected with a plurality of fire extinguisher electric valves, a detection module, a sending module and a spraying module in a signal manner; the detection module comprises a vibration sensor which is connected with the control processor through signals, wherein the outside of the vibration sensor is sleeved with a cooling bag in an annular structure, the root of the vibration sensor is fixedly provided with a connecting mechanism, the detection end of the vibration sensor is downward and is fixedly provided with a crushing piece, and the crushing piece consists of a disc and a plurality of small columns integrally arranged on the lower surface of the disc; the spraying module comprises a foam electric valve which is connected with the control processor in a signal way. The utility model can instantly detect the vibration signals of the thermal runaway, reduce the interference among different vibration signals, is beneficial to the rapid early warning and accurate early warning of the thermal runaway of the battery, and timely withdraws from the vibration sensor after the early warning.

Description

Battery thermal runaway early warning system based on vibration signal detection
Technical Field
The utility model belongs to the technical field of lithium battery fires, and particularly relates to a battery thermal runaway early warning system based on vibration signal detection.
Background
Lithium ion batteries are often used in a centralized manner in places such as new energy automobiles and energy storage power stations, the lithium ion batteries are easy to generate heat and heat due to internal loss, a safety valve is arranged at the top of each lithium ion hard shell battery, when the inside of each lithium ion hard shell battery is out of control, internal compounds are heated and expanded, the pressure is too high, and the safety valve can open exhaust and reduce pressure to avoid explosion.
After the safety valve is opened, chemical substances leaked from the inside of the battery can react with oxygen in the air under the condition of high temperature, and fire is likely to occur.
The existing detection device in the battery compartment prevents fire disaster by using infrared detectors, smoke detectors, temperature detectors and the like, and the batteries in the battery compartment are densely covered by a bracket to shield, so that the response time of the detectors is prolonged, early warning can not be timely sent out, and therefore, the battery thermal runaway early warning system based on vibration signal detection is provided.
Disclosure of Invention
The utility model aims to provide a battery thermal runaway early warning system based on vibration signal detection, which can instantly detect the vibration signals of thermal runaway, reduce interference among different vibration signals, and is beneficial to quick early warning and accurate early warning of the battery thermal runaway, and timely evacuation of a vibration sensor after early warning.
The technical scheme adopted by the utility model is as follows:
the battery thermal runaway early warning system based on vibration signal detection comprises a control processor, wherein the control processor is in signal connection with a plurality of fire extinguisher electric valves, a detection module, a sending module and a spraying module;
the detection module comprises vibration sensors which are connected with the control processor through signals, cooling bags with annular structures are sleeved outside the vibration sensors, connecting mechanisms are fixedly installed at the roots of the vibration sensors, crushing pieces are downwards and fixedly installed at the detection ends of the vibration sensors, and each crushing piece is composed of a disc and a plurality of small columns integrally installed on the lower surface of the disc;
the spraying module comprises a foam electric valve which is connected with the control processor through a signal, wherein a foam supply mechanism is fixedly arranged at the liquid inlet end of the foam electric valve, a spraying pipe is fixedly arranged at the liquid outlet end of the foam electric valve, and one end of the spraying pipe is inserted into an opening corresponding to the cooling bag;
the connecting mechanism comprises a flange plate fixedly arranged at the root of the vibration sensor, the lower surface of the flange plate is hinged with a clamp, the inner sides of the clamp are sleeved at one end of the corresponding spraying pipe positioned in the cooling bag, the crushing piece props against the upper surface of the corresponding safety valve and supports the vibration sensor when in operation, the safety valve opens the exhaust and decompresses and hits the crushing piece after the lithium battery is out of control, the crushing piece breaks and shakes the vibration sensor, the vibration signal of the thermal runaway can be instantaneously detected, the deformation of the cooling edge is utilized for buffering, different vibration sensors and the crushing piece can be separated, the interference between different vibration signals is reduced, the sending module sends early warning information to the display terminal, the quick early warning and accurate early warning of the battery are facilitated, finally, the high-multiple foam extinguishing agent is sprayed in the corresponding cooling bag along the spraying pipe, the vibration sensor is pulled by the reaction of spraying, and the vibration sensor is timely evacuated after the early warning.
Two hard tubes are symmetrically and fixedly arranged on one side of the cooling bag, an electric stop valve is fixedly arranged between one ends of two adjacent hard tubes, cooling water in the cooling bag is used for absorbing heat outside the lithium battery, emergency heat dissipation can be achieved, the electric stop valve is opened, the hard tubes are used for communicating the cooling bags in the same horizontal line, heat absorbed by one cooling bag can be transferred to the cooling bag communicated with the same cooling bag, and the upper limit of heat dissipation is improved.
And the cooling liquid pump is started to pump cooling water, the cooling liquid is pumped to the corresponding cooling bag along the hard pipe, and then the cooling liquid is discharged along the hard pipe positioned at the outermost side, so that heat in the cooling bag can be taken away, and the heat dissipation efficiency is improved.
The cooling liquid pump is characterized in that circulating pipes are arranged at liquid inlet ends of the cooling liquid pump, one ends of the circulating pipes, far away from the cooling liquid pump, are connected to one ends of the corresponding outermost hard pipes, the outer parts of the circulating pipes are respectively provided with a cooling fan connected with a control processor in a signal mode, after the cooling liquid pump is started, cooling water discharged by the outermost hard pipes is conveyed to the corresponding cooling liquid pump along the circulating pipes to form a cooling water circulation loop, the cooling water is recycled, and the cooling fans are started to blow air towards the circulating pipes, so that air flows take away heat in the cooling water circulation loop, and cooling of a cooling bag can be continued.
The foam supply mechanism comprises a conveying pipe fixedly arranged at the liquid inlet end of the foam electric valve, a booster pump is fixedly arranged between one ends, far away from the corresponding foam electric valves, of the conveying pipe, the liquid inlet end of the booster pump is fixedly connected with a high-multiple foam extinguishing agent tank, after the foam electric valve is opened, the booster pump is started to suck the high-multiple foam extinguishing agent in the high-multiple foam extinguishing agent tank, and the high-multiple foam extinguishing agent is conveyed to the foam electric valve along the conveying pipe so as to be sprayed out from the corresponding spraying pipe, manual control is not needed, and the degree of automation is high.
The sending module comprises a BMS communication unit and a 5G communication unit which are connected with the control processor through signals, when an early warning signal is sent, the BMS communication unit or the 5G communication unit can be selected, the transmission performance of the BMS communication unit is stable, and the transmission speed of the 5G communication unit is high.
The utility model has the technical effects that:
according to the battery thermal runaway early warning system based on vibration signal detection, when the battery thermal runaway early warning system works, the crushing piece props against the upper surface of the corresponding safety valve and supports the vibration sensor, the safety valve opens exhaust and decompresses after the lithium battery thermal runaway and hits the crushing piece, the crushing piece disintegrates and shakes the vibration sensor, the vibration signal of the thermal runaway can be detected instantaneously, cooling edge is utilized for deformation to buffer, different vibration sensors and the crushing piece can be separated, interference among different vibration signals is reduced, early warning information is sent to the display terminal by the sending module, rapid early warning and accurate early warning of the battery thermal runaway are facilitated, finally high-multiple foam fire extinguishing agent is sprayed into the corresponding cooling bag along the spraying pipe, the vibration sensor is pulled through the sprayed reaction, and the vibration sensor is evacuated in time after early warning.
According to the battery thermal runaway early warning system based on vibration signal detection, cooling water in the cooling package is utilized to absorb heat outside the lithium battery, emergency heat dissipation can be achieved, the electric stop valve is opened, the cooling package in the same horizontal line is communicated through the hard tube, the heat absorbed by one cooling package can be transferred to the cooling package communicated with the cooling package, and the upper limit of heat dissipation is improved.
According to the battery thermal runaway early warning system based on vibration signal detection, the cooling liquid pump is started to pump cooling water, the cooling water is pumped to the corresponding cooling package along the hard tube, and then the cooling water is discharged along the hard tube positioned at the outermost side, so that heat in the cooling package can be taken away, and the heat dissipation efficiency is improved.
According to the battery thermal runaway early warning system based on vibration signal detection, after the cooling liquid pump is started, cooling water discharged by the hard pipe at the other side of the cooling liquid pump is conveyed to the corresponding cooling liquid pump along the circulating pipe, so that a cooling water circulating loop is formed, cooling water is repeatedly utilized, and the cooling fan is started to blow air towards the circulating pipe, so that air flow takes away heat in the cooling water circulating loop, and heat dissipation of a cooling bag can be continuously carried out.
Drawings
FIG. 1 is a system flow diagram of the present utility model;
FIG. 2 is a system flow diagram of a detection module of the present utility model;
FIG. 3 is a system flow diagram of the spray module of the present utility model;
FIG. 4 is a system flow diagram embodiment of a transmit module of the present utility model;
FIG. 5 is a front view of an embodiment of a cooling package of the present utility model;
FIG. 6 is a bottom view embodiment of the spray tube of the present utility model;
fig. 7 is a bottom view embodiment of the cooling package of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a control processor; 2. an electric valve of the fire extinguisher; 3. a vibration sensor; 4. a cooling pack; 5. a crushing member; 6. a foam electric valve; 7. a spray tube; 8. a clamp; 9. a flange plate; 10. a hard tube; 11. an electric shut-off valve; 12. a coolant pump; 13. a circulation pipe; 14. a heat radiation fan; 15. a battery; 16. a delivery tube; 17. a booster pump; 18. a high-expansion foam extinguishing agent tank; 19. an emergency stop button; 20. a roller; 21. a BMS communication unit; 22. a 5G communication unit; 23. a warning light.
Detailed Description
The present utility model will be specifically described with reference to examples below in order to make the objects and advantages of the present utility model more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the utility model and does not limit the scope of the utility model strictly as claimed.
Embodiment one:
as shown in fig. 1-7, a battery thermal runaway early warning system based on vibration signal detection comprises a control processor 1, such as an electric fire monitoring system of the utility model in China with the publication number of CN109697823a, wherein the control processor 1 is composed of a single-chip microcomputer MCU and a data memory and is used for controlling the operation of the whole system, the control processor 1 is in signal connection with a plurality of fire extinguisher electric valves 2, a detection module, a transmission module and a spraying module, wherein an energy storage cabinet is provided with a plurality of storage cavities which are used for placing lithium batteries, fire extinguishers, the detection module and the spraying module, and inlets of the fire extinguisher electric valves 2 are fixedly connected with nozzles of corresponding fire extinguishers;
the detection module comprises a vibration sensor 3 which is connected with the control processor 1 through signals, wherein a cooling bag 4 with an annular structure is sleeved outside the vibration sensor 3, the cooling bag 4 is made of hollow rubber bags, cooling water is filled in the cooling bag, a connecting mechanism is fixedly arranged at the root of the vibration sensor 3, the detection end of the vibration sensor 3 faces downwards and is fixedly provided with a crushing piece 5, and the crushing piece 5 consists of a disc and a plurality of small columns integrally arranged on the lower surface of the disc;
the spraying module comprises a foam electric valve 6 which is connected with the control processor 1 through signals, a foam supply mechanism is fixedly arranged at the liquid inlet end of the foam electric valve 6, a spraying pipe 7 is fixedly arranged at the liquid outlet end of the foam electric valve 6, and one end of the spraying pipe 7 is inserted into an opening corresponding to the cooling bag 4;
the connecting mechanism comprises a flange plate 9 fixedly arranged at the root of the vibration sensor 3, oil films are attached to the upper surface of the flange plate 9 and are attached to the upper wall of the corresponding cooling bag 4, hoops 8 are hinged to the lower surface of the flange plate 9, the inner sides of the hoops 8 are sleeved at one ends of the corresponding spray pipes 7 positioned in the cooling bag 4, the cooling bag 4 is fixed in a storage cavity, lithium batteries are fixed in the cooling bag 4, a plurality of vibration sensors 3 are respectively arranged in the designated storage cavity during operation, a crushing piece 5 is abutted against the upper surface of the corresponding safety valve and supports the vibration sensor 3, the spray pipes 7, the hoops 8 and the flange plate 9 are suspended in the storage cavity, friction with the cooling bag 4 is utilized to clamp the vibration sensor 3, the crushing piece 5 and the flange plate 9, the safety valve is opened for exhausting and decompressing after the lithium batteries are out of control, and the crushing piece 5 is hit, the crushing part 5 is crushed to vibrate the vibration sensor 3, vibration signals of thermal runaway can be detected instantaneously, the cooling package 4 is utilized to cool and deform to buffer, different vibration sensors 3 and the crushing part 5 can be separated, interference among different vibration signals is reduced, the control processor 1 controls the sending module to send early warning information to the display terminal, rapid early warning and accurate early warning of battery thermal runaway are facilitated, meanwhile, the fire extinguisher electric valve 2 is opened, fire extinguishing agent is sprayed to lithium batteries of thermal runaway corresponding to the fire extinguisher to cool down, finally the foam supply mechanism is started and the foam electric valve 6 is opened, high-multiple foam fire extinguishing agent is sprayed to the corresponding cooling package 4 along the spraying pipe 7, the adjacent vibration sensor 3 is pulled by the clamp 8 and the flange plate 9, the spraying pipe 7 pulls the vibration sensor 3 to be separated from the cooling package 4 and the lithium batteries under the reaction of spraying, and after early warning, the vibration sensor 3 is timely evacuated.
Wherein, flange board 9 all is 1 mm's aluminum plate, and broken piece 5 is the plastics that thickness is less than 0.1mm, combines the structure of its a plurality of columella, can stably support corresponding flange board 9, can also be smashed by the relief valve of opening in the twinkling of an eye.
As shown in fig. 1 and 3, the foam supply mechanism comprises a conveying pipe 16 fixedly installed at the liquid inlet end of the foam electric valve 6, a booster pump 17 is fixedly installed between one ends, far away from the corresponding foam electric valves 6, of the conveying pipe 16, the booster pump 17 is fixed on the ground, the liquid inlet end of the booster pump 17 is fixedly connected with a high-multiple foam fire extinguishing agent tank 18, sufficient high-multiple foam fire extinguishing agent is stored in the high-multiple foam fire extinguishing agent tank 18, after the foam electric valve 6 is opened, the booster pump 17 is started to suck the high-multiple foam fire extinguishing agent in the high-multiple foam fire extinguishing agent tank 18, and the high-multiple foam fire extinguishing agent is conveyed to the foam electric valve 6 along the conveying pipe 16 so as to be sprayed out of the corresponding spraying pipe 7 without manual control, and the degree of automation is high.
Wherein, the high-multiple foam extinguishing agent tank 18 is provided with an electronic liquid level meter, and the liquid level information of the high-multiple foam extinguishing agent is monitored in real time and transmitted to the control processor 1 for display at a display terminal.
As shown in fig. 1 and 3, the booster pump 17 is in signal connection with a scram button 19 in signal connection with the control processor 1, the root of the scram button 19 is fixed on the outer surface of the energy storage cabinet, and when the energy storage cabinet is overhauled, the scram button 19 can be pressed to disconnect the power supply of the booster pump 17, so that the accidental spraying of high-multiple foam extinguishing agent is avoided.
As shown in fig. 5, 6 and 7, at least two rollers 20 are rotatably mounted on the lower surface of the flange plate 9, the lower surfaces of the rollers 20 are in contact with the upper surface of the corresponding lithium battery, when the flange plate 9 is pulled by the spray pipe 7, the corresponding rollers 20 are driven to move along the upper surface of the lithium battery, the upper surface is an oil film, friction on the inner side of the cooling bag 4 is small, and the cooling bag can be smoothly separated.
As shown in fig. 1 and 4, the sending module includes a BMS communication unit 21 and a 5G communication unit 22 that are connected to the control processor 1 by signals, where the BMS communication unit 21 uses a CAN communication chip, and has good external interference resistance, and when sending the early warning signal, the BMS communication unit 21 or the 5G communication unit 22 is selected, the transmission performance of the BMS communication unit 21 is stable, and the transmission of the 5G communication unit 22 is fast.
As shown in fig. 1 and 5, a warning lamp 23 connected with the control processor 1 in a signal manner is fixedly installed on one side of the cooling bag 4, the root of the warning lamp 23 is adhered to one side of the corresponding cooling bag 4, and the corresponding warning lamp 23 is lightened to indicate the position of the lithium battery with thermal runaway.
The working principle of the utility model is as follows: during operation, a plurality of vibration sensors 3 are respectively installed in the appointed storage cavity, the crushing piece 5 props against the upper surface of the corresponding safety valve and supports the vibration sensors 3, the spray pipe 7, the clamp 8 and the flange plate 9 are suspended in the storage cavity, the vibration sensors 3, the crushing piece 5 and the flange plate 9 are clamped by friction with the cooling bag 4, the safety valve is opened for exhausting and reducing pressure after the lithium battery is in thermal runaway, the crushing piece 5 is hit, the crushing piece 5 is cracked, the vibration sensors 3 vibrate, and a vibration signal of the thermal runaway can be instantaneously detected.
And utilize cooling package 4 to cool off deformation and cushion simultaneously, can separate different vibration sensor 3 and broken piece 5, reduce the interference between the different vibration signals.
And the control processor 1 controls the sending module to send the early warning information to the display terminal, so that the battery thermal runaway early warning and accurate early warning are facilitated.
Finally, starting a foam supply mechanism, opening a foam electric valve 6, spraying high-multiple foam fire extinguishing agent into the corresponding cooling bag 4 along a spraying pipe 7, pulling the adjacent vibration sensor 3 by using a clamp 8 and a flange plate 9, pulling the vibration sensor 3 to separate from the cooling bag 4 by the spraying pipe 7 under the reaction of spraying, and timely evacuating the vibration sensor 3 after early warning.
Embodiment two:
as shown in fig. 2 and 5, is substantially the same as the first embodiment, except that: two hard tubes 10 are symmetrically and fixedly arranged on one side of the cooling package 4, an electric stop valve 11 is fixedly arranged between one ends of two adjacent hard tubes 10, two openings of the electric stop valve 11 are fixedly connected to one ends of the two adjacent hard tubes 10 respectively, the other ends of the hard tubes 10 are communicated with the inside of the corresponding cooling package 4, cooling water in the cooling package 4 is utilized to absorb heat outside a lithium battery, emergency heat dissipation can be carried out, the electric stop valve 11 is opened, the hard tubes 10 are utilized to be communicated with the cooling package 4 in the same horizontal line, heat absorbed by one cooling package 4 can be transferred to the cooling package 4 communicated with the cooling package, and the upper heat dissipation limit is improved.
Embodiment III:
as shown in fig. 2 and 5, the embodiment is basically the same as the second embodiment, except that: the cooling liquid pump 12 is all installed to the one end of the hard tube 10 that is located outermost one side, and cooling liquid pump 12 is all fixed at the energy storage cabinet surface, and the feed liquor end of cooling liquid pump 12 is connected with the cooling water source, starts cooling liquid pump 12 and pumps cooling water for corresponding cooling package 4 along hard tube 10, discharges along the hard tube 10 that is located the outermost opposite side again, can take away the heat in the cooling package 4, improves radiating efficiency.
Embodiment four:
as shown in fig. 1, 2 and 5, is substantially the same as the third embodiment, except that: the circulating pipe 13 is installed to the feed liquor end of coolant pump 12, the one end that coolant pump 12 was kept away from to circulating pipe 13 all is connected in the one end that corresponds outermost opposite side hard tube 10, the outside of circulating pipe 13 all is provided with signal connection in the radiator fan 14 of control processor 1, radiator fan 14 all fixes at the energy storage cabinet surface, after the coolant pump 12 starts, the cooling water of outermost opposite side hard tube 10 exhaust is carried corresponding coolant pump 12 along circulating pipe 13, form the cooling water circulation circuit, reuse cooling water, and start radiator fan 14 and blow towards circulating pipe 13, make the air current take away the heat in the cooling water circulation circuit, can continuously dispel the heat to cooling package 4.
As shown in fig. 1 and 5, a battery 15 is electrically connected between the cooling fans 14, the battery 15 independently supplies power to the cooling fans 14, and even if the lithium battery is scrapped, the cooling fans 14 are not powered off, and the cooling fans 14 and the battery 15 both adopt 24VDC current.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (10)

1. The utility model provides a battery thermal runaway early warning system based on vibration signal detects, includes control processor (1), its characterized in that: the control processor (1) is in signal connection with a plurality of fire extinguisher electric valves (2), a detection module, a sending module and a spraying module;
the detection module comprises a vibration sensor (3) which is connected with the control processor (1) through signals, a cooling bag (4) with an annular structure is sleeved outside each vibration sensor (3), a connecting mechanism is fixedly installed at the root of each vibration sensor (3), crushing pieces (5) are fixedly installed at the detection ends of the vibration sensors (3) downwards, and each crushing piece (5) consists of a disc and a plurality of small columns integrally installed on the lower surface of the disc;
the spraying module comprises a foam electric valve (6) which is connected with the control processor (1) through signals, wherein foam supply mechanisms are fixedly arranged at liquid inlet ends of the foam electric valve (6), spraying pipes (7) are fixedly arranged at liquid outlet ends of the foam electric valve (6), and one ends of the spraying pipes (7) are inserted into one opening of the corresponding cooling bag (4);
the connecting mechanism comprises a flange plate (9) fixedly installed at the root of the vibration sensor (3), the lower surfaces of the flange plate (9) are hinged with a clamp (8), and the inner sides of the clamp (8) are sleeved at one ends of the corresponding spraying pipes (7) located inside the cooling bag (4).
2. The battery thermal runaway warning system based on vibration signal detection of claim 1, wherein: two hard pipes (10) are symmetrically and fixedly arranged on one side of the cooling bag (4), and an electric stop valve (11) is fixedly arranged between one ends of two adjacent hard pipes (10).
3. The battery thermal runaway warning system based on vibration signal detection of claim 2, wherein: and one end of the hard pipe (10) positioned at the outermost side is provided with a cooling liquid pump (12).
4. The battery thermal runaway warning system based on vibration signal detection of claim 3, wherein: the cooling liquid pump is characterized in that circulating pipes (13) are arranged at liquid inlet ends of the cooling liquid pump (12), one ends of the circulating pipes (13) far away from the cooling liquid pump (12) are connected to one ends of the corresponding outermost hard pipes (10) at the other sides, and cooling fans (14) connected to the control processor (1) through signals are arranged outside the circulating pipes (13).
5. The battery thermal runaway warning system based on vibration signal detection of claim 4, wherein: and a storage battery (15) is electrically connected between the cooling fans (14).
6. The battery thermal runaway warning system based on vibration signal detection of claim 1, wherein: the foam supply mechanism comprises a conveying pipe (16) fixedly arranged at the liquid inlet end of the foam electric valve (6), a booster pump (17) is fixedly arranged between one ends, far away from the corresponding foam electric valve (6), of the conveying pipe (16), and the liquid inlet end of the booster pump (17) is fixedly connected with a high-multiple foam extinguishing agent tank (18).
7. The battery thermal runaway warning system based on vibration signal detection of claim 6, wherein: the booster pump (17) is in signal connection with an emergency stop button (19) which is in signal connection with the control processor (1).
8. The battery thermal runaway warning system based on vibration signal detection of claim 1, wherein: the lower surface of the flange plate (9) is also rotatably provided with at least two rollers (20).
9. The battery thermal runaway warning system based on vibration signal detection of claim 1, wherein: the sending module comprises a BMS communication unit (21) and a 5G communication unit (22) which are connected with the control processor (1) through signals.
10. The battery thermal runaway warning system based on vibration signal detection of claim 1, wherein: and one side of the cooling bag (4) is fixedly provided with a warning lamp (23) which is in signal connection with the control processor (1).
CN202311342267.4A 2023-10-17 2023-10-17 Battery thermal runaway early warning system based on vibration signal detection Pending CN117244195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311342267.4A CN117244195A (en) 2023-10-17 2023-10-17 Battery thermal runaway early warning system based on vibration signal detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311342267.4A CN117244195A (en) 2023-10-17 2023-10-17 Battery thermal runaway early warning system based on vibration signal detection

Publications (1)

Publication Number Publication Date
CN117244195A true CN117244195A (en) 2023-12-19

Family

ID=89126309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311342267.4A Pending CN117244195A (en) 2023-10-17 2023-10-17 Battery thermal runaway early warning system based on vibration signal detection

Country Status (1)

Country Link
CN (1) CN117244195A (en)

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