CN221014332U - Battery fire extinguishing agent evaluation system - Google Patents
Battery fire extinguishing agent evaluation system Download PDFInfo
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- CN221014332U CN221014332U CN202322874695.3U CN202322874695U CN221014332U CN 221014332 U CN221014332 U CN 221014332U CN 202322874695 U CN202322874695 U CN 202322874695U CN 221014332 U CN221014332 U CN 221014332U
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 9
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of batteries, and discloses a battery fire extinguishing agent evaluation system which comprises a test box, a fire extinguishing device, a computer processing device and a pressure control module; the test box is used for bearing the battery to be tested, adjusting the internal temperature of the battery to be tested and triggering the thermal runaway of the battery to be tested; the fire extinguishing device is used for storing and releasing fire extinguishing agents, and a spray head for releasing the fire extinguishing agents is arranged in the test box; the pressure control module is used for detecting and controlling the air pressure in the test box; the computer processing device is respectively connected with the test box, the fire extinguishing device and the pressure control module and is used for controlling the test box, the fire extinguishing device and the pressure control module. The temperature and the environmental pressure of the lithium ion battery to be tested are controlled through the computer processing device, and the time of the spray nozzle releasing the fire extinguishing agent is controlled, so that the effect evaluation of the fire extinguishing agent on the battery fire under different temperature and pressure environments can be simulated, and the effect of evaluating different key characteristic parameters as the fire extinguishing agent release threshold on the fire extinguishing effect is realized.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery fire extinguishing agent evaluation system.
Background
The existing battery fire extinguishing technology has a plurality of problems: 1. the battery fire extinguishing technology focuses on improving the reliability of early warning parameters of thermal runaway, omits the evaluation of different extinguishing agents on the fire extinguishing efficiency of the lithium ion battery, and is different from the common fire explosion in the characteristics of high heat, energy shock waves, pyrolysis gas combustibility, toxicity, harmfulness and the like of the battery fire; 2. the prior art ignores the explosion hazard and toxicity influence evaluation of the fire extinguishing agent on the pyrolysis high-temperature gas of the lithium ion battery, and the high-temperature combustible and toxic gas released by the pyrolysis of the battery seriously threatens the life and property safety of surrounding personnel; 3. the battery fire testing equipment can only test under the environment of room temperature and standard atmospheric pressure, however, along with the wide application of electric automobiles, the development of future electric airplanes and the air transportation of battery cargoes, the application field and transportation of batteries can be expanded to highland alpine regions and high altitudes, the environmental temperature and pressure have obvious influence on the thermal runaway behavior of the lithium ion battery, the thermal runaway combustion behavior of the lithium ion battery under different temperature and pressure environments can show different pyrolysis, ignition, development and extinguishing characteristics, and the mechanisms of heating, heat transfer, heat dissipation and the like of the battery are also influenced by the environmental temperature and pressure. Therefore, the effectiveness evaluation of the fire extinguishing agent at normal pressure and room temperature on the fire suppression effect of the lithium ion battery is not suitable for the lithium ion battery in the environment of low pressure, low temperature and the like.
Therefore, how to comprehensively evaluate the fire extinguishing efficiency of the fire extinguishing agent on battery fire under different temperature and pressure coupling conditions is a problem to be solved by the technicians in the field.
Disclosure of utility model
The application mainly aims to provide a battery fire extinguishing agent evaluation system, which aims to solve the problem of comprehensive evaluation of fire extinguishing effectiveness of a fire extinguishing agent on battery fires under different temperature and pressure coupling conditions.
In order to achieve the above-mentioned purpose, a first aspect of the present utility model proposes a battery fire extinguishing agent evaluation system, including a test box, a fire extinguishing device, a computer processing device, and a pressure control module; the test box is used for bearing the battery to be tested, adjusting the internal temperature of the battery to be tested and triggering the thermal runaway of the battery to be tested; the fire extinguishing device is used for storing and releasing a fire extinguishing agent, and a spray head for releasing the fire extinguishing agent is arranged in the test box; the pressure control module is used for detecting and controlling the air pressure in the test box; the computer processing device is respectively connected with the test box, the fire extinguishing device and the pressure control module and is used for controlling the test box, the fire extinguishing device and the pressure control module.
Further, the test chamber includes a temperature control chamber body and a thermal runaway module, the thermal runaway module being located within the temperature control chamber body.
Further, the thermal runaway module includes a trigger module, a first temperature sensor, and a second temperature sensor; the triggering module is used for triggering thermal runaway of the battery to be tested; the first temperature sensor is closely attached to the battery to be detected and is used for detecting the surface temperature of the battery to be detected; the second temperature sensor is used for measuring the temperature in the temperature control box body; the trigger module, the anode and the cathode of the battery to be tested, the first temperature sensor and the second temperature sensor are all connected with the computer processing device.
Further, the pressure control module comprises a pressure sensor, a pipeline, an electromagnetic valve and a vacuum pump, wherein the pipeline is connected with the vacuum pump, the electromagnetic valve is arranged on the pipeline, one end of the pipeline is communicated with the test box, the pressure sensor is installed in the test box, and the pressure sensor and the electromagnetic valve are respectively connected with the computer processing device.
Further, the pipeline is a three-way pipeline, the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the vacuum pump comprises a first vacuum pump and a second vacuum pump, the first vacuum pump is connected with the first end of the three-way pipeline through the first electromagnetic valve, the second vacuum pump is connected with the second end of the three-way pipeline through the second electromagnetic valve, and the third end of the three-way pipeline is communicated with the test box.
Further, the device also comprises a gas detection device which is respectively connected with the test box and the computer processing device and is used for detecting the gas components in the test box; the gas detection device is electrically connected with the computer processing device.
Further, the gas detection device comprises a sampling pipeline, a pretreatment module, a gas detection module and an air pump, wherein the sampling pipeline is arranged at the outer side of the test box, and two ends of the sampling pipeline are respectively communicated with the inner part of the test box; the sampling pipeline is internally provided with the pretreatment module, the gas detection module and the air pump.
Further, the fire extinguishing device comprises a fire extinguishing agent storage tank, a fire extinguishing electromagnetic valve, a fire extinguishing pipe and a spray head, wherein the fire extinguishing agent storage tank is connected with the fire extinguishing pipe through the fire extinguishing electromagnetic valve, and the fire extinguishing electromagnetic valve is connected with the computer processing device; one end of the fire extinguishing pipe is provided with the spray head, and the spray head is arranged above the inside of the test box corresponding to the battery to be tested.
Further, the device also comprises an observation window and a camera monitoring device, wherein the observation window is arranged on one side of the test box, and the camera monitoring device is arranged corresponding to the observation window; the camera monitoring device comprises a camera and/or a thermal infrared imager.
Further, the test box further comprises a smoke treatment module, and the smoke treatment module is arranged above the test box and used for collecting and treating smoke generated by the test box.
The beneficial effects are that:
the utility model relates to a battery fire extinguishing agent evaluation system, which comprises a test box, a fire extinguishing device, a computer processing device and a pressure control module; the test box is used for bearing the battery to be tested, adjusting the internal temperature of the battery to be tested and triggering the thermal runaway of the battery to be tested; the fire extinguishing device is used for storing and releasing a fire extinguishing agent, and a spray head for releasing the fire extinguishing agent is arranged in the test box; the pressure control module is used for detecting and controlling the air pressure in the test box; the computer processing device is respectively connected with the test box, the fire extinguishing device and the pressure control module and is used for controlling the test box, the fire extinguishing device and the pressure control module. The temperature and the environmental pressure of the lithium ion battery to be tested are controlled through the computer processing device, and the time of the spray nozzle releasing the fire extinguishing agent is controlled, so that the effect evaluation of the fire extinguishing agent on the battery fire under different temperature and pressure environments can be simulated, and the effect of evaluating different key characteristic parameters as the fire extinguishing agent release threshold on the fire extinguishing effect is realized.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of an evaluation apparatus according to an embodiment of the present utility model;
Fig. 2 is a schematic view of a device connection structure according to an embodiment of the present utility model.
Wherein:
1. A test chamber; 11. a temperature control box body; 121. a battery to be tested; 122. a triggering module; 123. a first temperature sensor; 124. a second temperature sensor; 13. an observation window; 14. a flue gas treatment module; 2. a fire extinguishing device; 21. a fire extinguishing agent storage tank; 22. a fire suppression solenoid valve; 23. a fire extinguishing pipe; 24. a spray head; 3. a gas detection device; 31. a sampling pipeline; 32. a preprocessing module; 33. a gas detection module; 34. an air extracting pump; 4. a pressure control module; 41. a pressure sensor; 42. a pipeline; 43. a first vacuum pump; 44. a second vacuum pump; 45. a first electromagnetic valve; 46. a second electromagnetic valve; 5. computer processing means; 51. a data processing module; 52. a data storage module; 53. a control module; 6. a camera monitoring device; 61. a camera; 62. and the thermal infrared imager.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Referring to fig. 1-2, a first aspect of the present utility model proposes a battery fire extinguishing agent evaluation system comprising a test chamber 1, a fire extinguishing device 2, a computer processing device 5, a pressure control module 4; the test box 1 is used for bearing the battery 121 to be tested, adjusting the internal temperature of the battery 121 to be tested and triggering the thermal runaway of the battery 121 to be tested; the fire extinguishing device 2 is used for storing and releasing fire extinguishing agents, and a spray head 24 for releasing the fire extinguishing agents is arranged in the test box 1; the pressure control module 4 is used for detecting and controlling the air pressure in the test box 1; the computer processing device 5 is respectively connected with the test box 1, the fire extinguishing device 2 and the pressure control module 4 and is used for controlling the test box 1, the fire extinguishing device 2 and the pressure control module 4.
In the above embodiment, the battery 121 to be tested may be one of a single battery, a battery pack and a battery pack, the computer processing device 5 includes a data storage module 52, a data processing module 51 and a control module 53, which are used for recording and processing various sensor data, the control module 53 can set a fire extinguishing agent release threshold and a fire extinguishing agent stop release threshold, wherein the setting of the fire extinguishing agent release threshold and the fire extinguishing agent stop release threshold refers to the information of the battery surface temperature, the ambient pressure, the voltage, the characteristic gas concentration, the time and the like, and when the real-time value reaches the set threshold, the automatic pressure control of the experiment is realized by controlling the opening or closing of the electromagnetic valve. The control module 53 in the computer processing device 5 outputs instructions to control the temperature and the air pressure in the test box 1 where the battery 121 to be tested is located, and controls the time of releasing the fire extinguishing agent by the spray nozzle 24, so that the fire extinguishing agent effect evaluation of the battery 121 to be tested under different temperature and pressure environments can be simulated, and the effect of evaluating different key characteristic parameters as the fire extinguishing agent release threshold on the fire extinguishing effect is realized.
In the above embodiment, the number of the fire extinguishing devices 2 may be plural, and the kinds of the fire extinguishing agents may be plural, for example, a water-based fire extinguishing agent, a foam fire extinguishing agent, a dry powder fire extinguishing agent, a gas fire extinguishing agent, and the like, and the synergistic effect of the different fire extinguishing agents can be evaluated to the fire extinguishing effect of the battery 121 to be tested.
In one embodiment, the test chamber 1 includes a temperature control chamber 11 and a thermal runaway module located within the temperature control chamber 11. The temperature control box body 11 is used for controlling the temperature of the environment in the box and providing a safe and airtight environment for experiments; the thermal runaway module is used for triggering the thermal runaway of the battery 121 to be tested and measuring various parameters in the test box 1 after the battery 121 to be tested is in thermal runaway.
In the above embodiment, the thermal runaway module includes a trigger module 122, a first temperature sensor 123, and a second temperature sensor 124; the triggering module 122 is used for triggering thermal runaway of the battery to be tested; the first temperature sensor 123 is closely attached to the battery 121 to be measured and is used for detecting the surface temperature of the battery to be measured; the second temperature sensor 124 is used for measuring the temperature in the temperature control box 11; the triggering module 122, the anode and cathode of the battery 121 to be tested, the first temperature sensor 123 and the second temperature sensor 124 are all connected with the computer processing device 5. The triggering module 122 comprises one or more of heating, short-circuiting, needling, overcharging and overdischarging to induce thermal runaway of the battery under test; the first temperature sensor 123 is disposed on the surface of the battery to be tested to detect the surface temperature thereof, the second temperature sensor 124 is disposed in the surrounding space of the battery to be tested 121 in the test chamber 1 for measuring the temperature in the temperature control chamber 11, and the computer processing device 5 records the temperatures of the surface of the battery to be tested 121, the sprayed flame and the pyrolysis gas detected by the first temperature sensor 123 and the second temperature sensor 124, and the voltage change condition of the surface of the battery to be tested 121.
In an embodiment, the pressure control module 4 includes a pressure sensor 41, a pipeline 42, an electromagnetic valve and a vacuum pump, the pipeline 42 is connected with the vacuum pump, the electromagnetic valve is disposed on the pipeline 42, one end of the pipeline 42 is communicated with the test box 1, the pressure sensor 41 is installed in the test box 1, and the pressure sensor 41 and the electromagnetic valve are respectively connected with the computer processing device 5. The pressure sensor 41 detects the real-time air pressure value in the test box 1, the air pressure flowing in the pipeline is consistent with the air pressure in the test box 1, the vacuum pump conveys air through the pipeline 42 to increase the air pressure in the test box 1, or the vacuum pump pumps out air to reduce the air pressure in the test box 1, and the electromagnetic valve can control whether the pipeline 42 for feeding or exhausting air of the vacuum pump is smooth.
In the above embodiment, the pipeline 42 is a three-way pipeline, the electromagnetic valve includes a first electromagnetic valve 45 and a second electromagnetic valve 46, the vacuum pump includes a first vacuum pump 43 and a second vacuum pump 44, the first vacuum pump 43 is connected with a first end of the three-way pipeline through the first electromagnetic valve 45, the second vacuum pump 44 is connected with a second end of the three-way pipeline through the second electromagnetic valve 46, and a third end of the three-way pipeline is communicated with the test chamber 1. The first vacuum pump 43 and the second vacuum pump 44 respectively control the air suction and the gas delivery of the three-way pipeline, the first vacuum pump 43 is connected with the three-way pipeline through a first electromagnetic valve 45, and the second vacuum pump 44 is connected with the three-way pipeline through a second electromagnetic valve 46 for quickly adjusting the air pressure in the test box to reach a target value.
In an embodiment, the battery fire extinguishing agent evaluating system further comprises a gas detection device 3, wherein the gas detection device 3 is connected with the test box 1 and is used for detecting the gas composition in the test box 1; the gas detection device 3 is electrically connected to the computer processing device 5. The gas detection device 3 is connected with the test box 1 and is used for detecting the gas composition information and the gas flammability and toxicity changes in the test box 1 on line; the gas detection device 3 comprises at least one of raman spectroscopy, infrared spectroscopy, electrochemical sensor, semiconductor gas sensor, gas chromatograph, mass spectrometer, and detected characteristic gas types including but not limited to O2、CO2、CO、CH4、C2H4、C2H6、C3H8、C3H6、HF、SO2、NO2、NO、NCH、NH3 and HCl; the gas detection device 3 is electrically connected to the computer processing device 5, and is configured to feed back the result detected by the analysis instrument to the computer processing device 5.
In the above embodiment, the gas detection device 3 includes a sampling pipe 31, a pretreatment module 32, a gas detection module 33, and an air pump 34, where the sampling pipe 31 is disposed outside the test chamber 1, and two ends of the sampling pipe 31 are respectively communicated with the inside of the test chamber 1; the sampling pipeline 31 is internally provided with the pretreatment module 32, the gas detection module 33 and the air pump 34. The sampling pipeline 31 is used for filtering the gas in the test box 1, and the pretreatment module 32 is used for filtering particles in the gas and removing solid particles and liquid drops in the air so as to prevent the particles and the liquid drops from damaging or interfering with the instrument in the gas detection module 33, and the air pump 34 can control the pressure and the flow rate of the gas in the sampling pipeline 31, so that the pumped gas can be output to the test box 1 after being sampled, and the stability of the gas environmental pressure in the test box 1 is ensured.
In one embodiment, the fire extinguishing device 2 comprises a fire extinguishing agent storage tank 21, a fire extinguishing electromagnetic valve 22, a fire extinguishing pipe 23 and a spray nozzle 24, wherein the fire extinguishing agent storage tank 21 is connected with the fire extinguishing pipe 23 through the fire extinguishing electromagnetic valve 22, and the fire extinguishing electromagnetic valve 22 is connected with the computer processing device 5; the fire extinguishing pipe 23 has one end provided with the nozzle 24, and the nozzle 24 is installed above the inside of the test chamber 1 corresponding to the battery 121 to be tested. The fire extinguishing agent storage tank 21 stores fire extinguishing agent, the fire extinguishing pipe 23 communicates the fire extinguishing agent storage tank 21 with the test box 1, and the computer processing device 5 controls the delivery and stop of the fire extinguishing agent in the fire extinguishing pipe 23 by controlling the fire extinguishing electromagnetic valve 22.
In one embodiment, the battery fire extinguishing agent evaluation system further comprises an observation window 13 and a camera monitoring device 6, wherein the observation window 13 is arranged on one side of the test box 1, and the camera monitoring device 6 is arranged corresponding to the observation window 13; the camera monitoring device 6 comprises a camera 61 and/or a thermal infrared imager 62. The camera 61 can observe the state of the battery 121 to be measured and the smoke sprayed by the battery cell in real time, and the thermal infrared imager 62 can record the flame sprayed by the battery 121 to be measured in thermal runaway and the change of the heat of the battery 121 to be measured in real time.
In one embodiment, the test chamber 1 further includes a flue gas treatment module 14, and the flue gas treatment module 14 is disposed above the test chamber 1 and is used for collecting and treating the flue gas generated by the test chamber 1. And collecting and treating smoke generated by a battery fire experiment. The fire extinguishing efficiency of the fire extinguishing agent on battery fire under different temperature and pressure environments is comprehensively evaluated from the aspects of fire extinguishing efficiency, cooling capacity, combustibility, toxicity and the like of released gas.
During experiments, a temperature sensor is fixed on the surface of a battery 121 to be tested by using a high-temperature-resistant adhesive tape, positive and negative lugs of the battery 121 to be tested are connected with a circuit, the battery 121 to be tested is connected with a trigger module 122 in a thermal runaway module, and a temperature control box 11 is sealed; setting and controlling experimental parameters, specifically, inputting the temperature of the ambient gas into the temperature control box 11, and inputting a pressure threshold value, a triggering parameter threshold value for releasing the fire extinguishing agent and an ending parameter threshold value by the computer processing device 5; when the gas temperature and the gas pressure in the test box 1 reach the target set values and are stable, the trigger module 122, the gas detection device 3 and the camera monitoring device 6 are started, meanwhile, the computer processing device 5 measures the surface temperature and the voltage of the battery in real time, the temperature of the thermal runaway flame, the released gas temperature, the gas pressure and the gas concentration in the test box 1 and the like, the key characteristic parameters are obtained, and when the battery is in thermal runaway, the trigger module 122 is closed.
Performing computational analysis of gas flammability according to the gas concentration measured in real time: the gas explosion limit was calculated using the Lee Xia Te column mixing rule to represent gas flammability. The explosion limit calculation is derived from the following formula:
Wherein, L m is the explosion limit of the gas mixture generated after the thermal runaway of the lithium ion battery, x i is the volume percent of the components in the combustible gas mixture, L i is the explosion limit of the components in the combustible gas mixture, L M is the explosion limit of the gas mixture in the inert gas, and B is the volume percent of the inert gas.
The toxicity of the asphyxiating gas was calculated according to the FED model proposed by ISO 13571. The calculation of asphyxia gas toxicity was based on the following formula:
In the middle of Is the concentration of each gas in μL/L, [ CO2] is the volume fraction of CO2, and Δt is the time variation.
Toxicity of the irritant gases was calculated according to the FEC model proposed by ISO13571, the calculation of the toxicity of the irritant gases being given according to the following formula:
Wherein F is a critical concentration expected to cause incapacitation, F HF is 500. Mu.L/L, 150. Mu.L/L.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.
Claims (10)
1. The battery fire extinguishing agent evaluation system is characterized by comprising a test box, a fire extinguishing device, a computer processing device and a pressure control module;
The test box is used for bearing the battery to be tested, adjusting the internal temperature of the battery to be tested and triggering the thermal runaway of the battery to be tested;
The fire extinguishing device is used for storing and releasing a fire extinguishing agent, and a spray head for releasing the fire extinguishing agent is arranged in the test box;
the pressure control module is used for detecting and controlling the air pressure in the test box;
The computer processing device is respectively connected with the test box, the fire extinguishing device and the pressure control module and is used for controlling the test box, the fire extinguishing device and the pressure control module.
2. The battery fire suppression agent evaluation system of claim 1, wherein the test box comprises a temperature control box and a thermal runaway module, the thermal runaway module being located within the temperature control box.
3. The battery fire suppression agent evaluation system of claim 2, wherein the thermal runaway module comprises a trigger module, a first temperature sensor, and a second temperature sensor; the triggering module is used for triggering thermal runaway of the battery to be tested; the first temperature sensor is closely attached to the battery to be detected and is used for detecting the surface temperature of the battery to be detected; the second temperature sensor is used for measuring the temperature in the temperature control box body; the trigger module, the anode and the cathode of the battery to be tested, the first temperature sensor and the second temperature sensor are all connected with the computer processing device.
4. The battery fire extinguishing agent evaluation system according to claim 1, wherein the pressure control module comprises a pressure sensor, a pipeline, an electromagnetic valve and a vacuum pump, the pipeline is connected with the vacuum pump, the electromagnetic valve is arranged on the pipeline, one end of the pipeline is communicated with the test box, the pressure sensor is installed in the test box, and the pressure sensor and the electromagnetic valve are respectively connected with the computer processing device.
5. The battery fire suppression agent evaluation system of claim 4, wherein the piping is a three-way piping, the solenoid valve comprises a first solenoid valve and a second solenoid valve, the vacuum pump comprises a first vacuum pump and a second vacuum pump, the first vacuum pump is connected to a first end of the three-way piping through the first solenoid valve, the second vacuum pump is connected to a second end of the three-way piping through the second solenoid valve, and a third end of the three-way piping is in communication with the test chamber.
6. The battery fire suppression agent evaluation system of claim 1, further comprising a gas detection device connected to the test chamber for detecting a gas composition within the test chamber; the gas detection device is electrically connected with the computer processing device.
7. The battery fire extinguishing agent evaluation system according to claim 6, wherein the gas detection device comprises a sampling pipeline, a pretreatment module, a gas detection module and an air pump, wherein the sampling pipeline is arranged on the outer side of the test box, and two ends of the sampling pipeline are respectively communicated with the interior of the test box; the sampling pipeline is internally provided with the pretreatment module, the gas detection module and the air pump.
8. The battery fire extinguishing agent evaluation system of claim 1, wherein the fire extinguishing device comprises a fire extinguishing agent storage tank, a fire extinguishing solenoid valve, a fire extinguishing pipe and a spray head, the fire extinguishing agent storage tank being connected to the fire extinguishing pipe through the fire extinguishing solenoid valve, the fire extinguishing solenoid valve being connected to the computer processing device; one end of the fire extinguishing pipe is provided with the spray head, and the spray head is arranged above the inside of the test box corresponding to the battery to be tested.
9. The battery fire extinguishing agent evaluation system according to claim 1, further comprising an observation window and a camera monitoring device, wherein the observation window is arranged on one side of the test box, and the camera monitoring device is arranged corresponding to the observation window; the camera monitoring device comprises a camera and/or a thermal infrared imager.
10. The battery fire suppression agent evaluation system of claim 1, wherein the test box further comprises a fume treatment module disposed above the test box for collecting and treating fumes generated by the test box.
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