CN217689324U - Battery thermal failure test system - Google Patents
Battery thermal failure test system Download PDFInfo
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- CN217689324U CN217689324U CN202220884091.XU CN202220884091U CN217689324U CN 217689324 U CN217689324 U CN 217689324U CN 202220884091 U CN202220884091 U CN 202220884091U CN 217689324 U CN217689324 U CN 217689324U
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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 discloses a battery thermal failure test system, which comprises a test cabin, a heating unit, a sampling unit and a control unit; the test chamber is a closed chamber body, a chamber cover is detachably and hermetically connected to the test chamber, and an air pressure detection device and at least one temperature detection device are arranged in the test chamber; the heating unit comprises a heating table arranged in the test chamber and an electric heating film paved on the top surface of the heating table, and the electric heating film is electrically connected with a power supply arranged outside the test chamber; the sampling unit comprises a pneumatic element, a pressure flow regulator, a dryer, a filter and a gas sampling device which are sequentially communicated through a pipeline, and the pneumatic element is also communicated with the inside of the test chamber through the pipeline; the air pressure detection device, the temperature detection device, the gas power element and the pressure flow regulator are respectively in communication connection with the control unit, and the electric heating film is electrically connected with the temperature control meter. The utility model discloses a thermal failure test system of battery can test the thermal failure of battery.
Description
Technical Field
The utility model relates to a battery test technical field especially relates to a battery thermal failure test system.
Background
Safety is the lifeline of energy storage. Along with the occurrence of the thermal failure phenomenon of the new energy automobile, stricter requirements are provided for personal safety guarantee, and therefore, the national Ministry of industry and trust has issued relevant standard standards for new energy passenger cars, and the new energy passenger cars with the length of more than 6m are required to be additionally provided with battery protection devices, so that the purpose of early warning is achieved, and the life safety of passengers is guaranteed to a limited extent. Then, how does thermal failure achieve this again? Let us next look at the working principle. The lithium cobaltate is used as a research object for analysis, when a certain high temperature is reached, the anode can be instantly decomposed and release oxygen, and the oxygen and a solvent are subjected to oxidation reaction to generate a large amount of gas and heat, so that the thermal failure phenomenon is rapidly generated. It can be seen from the mechanism that thermal failure is initiated by heat accumulation and is a result of the aggravation of each other by superposition. How to detect various gases and give an early warning during the occurrence?
The current effective failure judgment method adopts four different types of sensors for monitoring, namely temperature, gas, smoke and flame sensors. The temperature is the real-time monitoring quantity, will judge the early warning when the temperature rises in the battery compartment, and the same reason, utilize gas and smog synchronous judgement when the battery takes place to leak, can detect the size of gas concentration and the size of smog granule rapidly, can effectively early warning judgement before the moment of so not firing, and the flame sensor is to judging the moment of just producing flame, just so can follow the initial moment of out of control and carry out the early warning that does not omit in the in-process that produces flame.
However, the sizes of the gas and smoke particles generated by the batteries of different types and specifications are different, so that the sizes of the gas and smoke particles generated when the batteries fail due to heat can be accurately known in order to perform early warning more accurately and timely, namely, the fire characteristics caused by the thermal failure of the batteries can be accurately known. However, no special test system can effectively test the thermal failure of the battery at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery thermal failure test system to solve the problem that above-mentioned prior art exists, realize the test to the battery thermal failure.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a battery thermal failure test system, which comprises a test cabin, a heating unit, a sampling unit and a control unit; the test chamber is a closed chamber body, a chamber cover is detachably and hermetically connected to the test chamber, and an air pressure detection device and at least one temperature detection device are arranged in the test chamber; the heating unit comprises a heating table arranged in the test chamber and an electric heating film paved on the top surface of the heating table, and the electric heating film is electrically connected with a power supply arranged outside the test chamber; the sampling unit comprises a pneumatic element, a pressure flow regulator, a dryer, a filter and a gas sampling device which are sequentially communicated through pipelines, and the pneumatic element is also communicated with the inside of the test chamber through a pipeline; the air pressure detection device, the temperature detection device, the gas power element and the pressure flow regulator are respectively in communication connection with the control unit, and the electric heating film is electrically connected with the temperature control meter.
Preferably, the device also comprises a vacuumizing unit, wherein the vacuumizing unit comprises a vacuum pump communicated with the inside of the test chamber through a connecting pipe, and a vacuum pressure gauge is arranged on the connecting pipe; the vacuum pressure gauge and the vacuum pump are respectively in communication connection with the control unit.
Preferably, the test chamber further comprises an inflation unit, the inflation unit comprises a nitrogen gas source and an inflation tube, and a gas outlet of the nitrogen gas source is communicated with the interior of the test chamber through the inflation tube; and the inflation tube is provided with a pressure flow regulator and an explosion-proof electromagnetic valve which are respectively in communication connection with the control unit.
Preferably, the test chamber further comprises a blowing system, wherein the blowing system comprises a nitrogen gas source and a blowing pipe, and a gas outlet of the nitrogen gas source is communicated with the inside of the test chamber through the blowing pipe; and the air blowing pipe is provided with a pressure flow regulator and an explosion-proof electromagnetic valve which are respectively in communication connection with the control unit.
Preferably, the air pressure detection device is a pressure collector.
Preferably, an automatic pressure relief valve is further arranged on the test chamber.
Preferably, the temperature detection device adopts a thermocouple, the control unit adopts a PLC programmable controller, and the gas power element is a suction pump.
Preferably, a sealing joint for a signal wire and a power wire to pass through is arranged on the test chamber, and the signal wire and the power wire are hermetically connected with the test chamber through the sealing joint.
Preferably, the test chamber is arranged on a test stand, the test stand is made of metal, and the test chamber is grounded.
Preferably, the test chamber is cylindrical and the test chamber is axially horizontal, two ends of the test chamber are respectively connected with the chamber cover through flanges, and the chamber cover is an elliptical seal head.
The utility model discloses for prior art gain following technological effect:
the utility model discloses a thermal failure test system of battery can test the thermal failure of battery. The electric heating film in the battery thermal failure testing system can be linearly heated, the heating temperature can reach more than 500 ℃, and the requirement of the conventional battery thermal failure on high temperature is met; the utility model provides a test chamber adopts corrosion-resistant, high temperature resistant, antifatigue, high strength's steel preparation, and pressure resistance is good, long service life. The test chamber designs into cylinder, cabin cover design into the ellipse, has all improved the degree of consistency of compressive strength and atress, the utility model provides a test chamber is withstand voltage 5MPa, the biggest withstand voltage 7MPa in normal test.
The test stand is made of a baking varnish metal stand, so that the structure strength is high, and the test stand is attractive and corrosion-resistant; by utilizing the purging system, residual samples and gas in the test chamber after the experiment can be conveniently cleaned; the vacuum pumping unit can quickly, effectively, simply and conveniently meet the requirement of a test vacuum environment; the nitrogen is filled in the test chamber by adopting the air filling unit before the test, so that a test environment with reliable temperature can be provided, and the operation safety in the test process is ensured; the sampling unit is provided with a plurality of gas sampling devices, so that the sampling requirements of different requirements are met. 12 temperature acquisition points are uniformly distributed in the test cabin, and a temperature acquisition device is arranged at each temperature acquisition point, so that the temperature acquisition requirements of all parts in the experiment are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery thermal failure testing system of the present invention;
fig. 2 is a schematic structural diagram ii of the battery thermal failure testing system of the present invention;
fig. 3 is a third schematic structural diagram of the battery thermal failure testing system of the present invention;
wherein: 1. a test chamber; 2. a test stand; 3. a front hatch cover; 4. a rear hatch cover; 5. a control box; 6. a vacuum pumping unit; 7. an inflation unit; 8. a sampling unit; 9. a purging system; 10. a vacuum manometer; 11. a connecting pipe; 12. an inflation tube; 13. an explosion-proof solenoid valve; 14. a pressure-flow regulator; 15. an air blowing pipe; 16. an air pressure detecting device; 17. an automatic pressure relief valve; 18. a heating stage; 19. electrically heating the film; 20. a gas dynamic element; 21. a vacuum pump; 22. quickly opening the rotary suspension arm; 23. locking the bolt; 24. a high-pressure sealing gasket; 25. a seal ring; 26. sealing the joint; 27. and (4) a line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a battery thermal failure test system to solve the problem that above-mentioned prior art exists, realize the test to battery thermal failure.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 to 3: the embodiment provides a battery thermal failure testing system 100 which comprises a test chamber 1, a heating unit, a sampling unit 8, a control unit, a vacuumizing unit 6, an inflating unit 7 and a purging system 9.
The test chamber 1 is a closed chamber body, and a chamber cover is detachably and hermetically connected to the test chamber 1; specifically, the test chamber 1 is cylindrical, the axial direction of the test chamber 1 is horizontal, two ends of the test chamber 1 are respectively connected with a chamber cover through flanges, namely a front chamber cover 3 and a rear chamber cover 4, and the front chamber cover 3 and the rear chamber cover 4 are both preferably provided with oval end sockets; the front hatch cover 3 and the rear hatch cover 4 are respectively fixedly connected with the test cabin 1 through a plurality of locking bolts 23, a high-pressure sealing gasket 24 is clamped between the front hatch cover 3 and the test cabin 1, a sealing ring 25 is clamped between the rear hatch cover 4 and the test cabin 1, a quick-opening rotary suspension arm 22 is arranged on the test cabin 1, the quick-opening rotary suspension arm 22 is communicated with the front hatch cover 3, so that the front hatch cover 3 does not need to be detached after being opened, the front hatch cover 3 can be rotatably opened, and the quick-opening rotary suspension arm can be locked by the quick-opening bolts after being closed. The test chamber 1 is made of corrosion-resistant, high-temperature-resistant, fatigue-resistant and high-strength steel, and has good pressure resistance and long service life. Experimental cabin 1 designs into cylinder, cabin cover design into the ellipse, has all improved the degree of consistency of compressive strength and atress, the utility model provides an experimental cabin 1 is withstand voltage 5MPa, the biggest withstand voltage 7MPa of normal test. The test chamber 1 is arranged on the test stand 2, and the test stand 2 is made of a baking varnish metal stand, so that the structure strength is high, and the test chamber is attractive and corrosion-resistant; the test chamber 1 is grounded, thereby preventing the test chamber 1 from leaking electricity.
An air pressure detection device 16 is arranged in the test chamber 1, 12 temperature collection points are uniformly distributed, a temperature collection device is arranged at each temperature collection point, and the temperature detection device adopts a thermocouple, so that the collection requirements of the temperature of each part in the experiment are met. The air pressure detection device 16 adopts a pressure collector, the temperature detection devices adopt thermocouples, and the air pressure detection device 16 and each temperature detection device are respectively in communication connection with the control unit. Still be provided with automatic relief valve 17 on test chamber 1, pressure increase in the test chamber 1 in the twinkling of an eye when the battery explodes, automatic relief valve 17 is automatic to begin the pressure release when exceeding 2MPa, releases the unnecessary gas in the test chamber 1, reduces the test chamber 1 internal pressure and automatic shutdown after 2MPa below to the realization is to the protection of test chamber 1.
The heating unit comprises a heating table 18 arranged in the test chamber 1 and an electric heating film 19 paved on the top surface of the heating table 18, the electric heating film 19 is electrically connected with a power supply arranged outside the test chamber 1, the electric heating film 19 is electrically connected with the temperature control meter, the electric heating film 19 can be controlled by the temperature control meter to linearly heat the battery to be tested, the heating temperature can reach more than 500 ℃, and the requirement of the conventional battery thermal failure on high temperature is met.
The sampling unit 8 comprises a pneumatic element 20, a pressure flow regulator 14, a dryer, a filter and a gas sampling device which are sequentially communicated through pipelines, and the pneumatic element 20 is also communicated with the interior of the test chamber 1 through a pipeline; the gas-dynamic element 20 and the pressure-flow regulator 14 are each connected in communication with a control unit. The gas power element 20 adopts an air suction pump, and gas is pumped out by the gas power element 20 and then is introduced into the gas sampling device through the pressure flow regulator 14, the dryer and the filter in sequence, so that sampling is realized; the sampling unit 8 of the present embodiment is equipped with a plurality of gas sampling devices, so as to meet sampling requirements of different requirements.
The vacuumizing unit 6 comprises a vacuum pump 21 communicated with the interior of the test chamber 1 through a connecting pipe 11, and a vacuum pressure gauge 10 is arranged on the connecting pipe 11; vacuum pressure gauge 10 and vacuum pump 21 are respectively with the control unit communication connection, can carry out evacuation processing to test chamber 1 fast effectively, simply conveniently through opening vacuum pump 21 to satisfy experimental requirement to the vacuum environment.
The gas filling unit 7 comprises a nitrogen gas source and a gas filling pipe 12, and a gas outlet of the nitrogen gas source is communicated with the inside of the test chamber 1 through the gas filling pipe 12; the gas-filled tube 12 is provided with a pressure flow regulator 14 and an explosion-proof electromagnetic valve 13 which are respectively connected with the control unit in a communication way. The gas charging unit 7 is adopted to charge nitrogen gas into the test chamber 1 before the test, so that a test environment with reliable temperature can be provided, and the operation safety in the test process is ensured.
The blowing system 9 comprises a nitrogen gas source and a blowing pipe 15, and a gas outlet of the nitrogen gas source is communicated with the inside of the test chamber 1 through the blowing pipe 15; the blowing pipe 15 is provided with a pressure flow regulator 14 and an explosion-proof electromagnetic valve 13 which are respectively connected with the control unit in a communication way. High-pressure gas is blown into the test chamber 1 by the blowing system 9, so that residual samples and gas in the test chamber 1 after an experiment can be cleaned conveniently.
The control unit specifically adopts a PLC programmable controller and is arranged in the control box 5. The rear hatch cover 4 of the test chamber 1 is provided with a sealing joint 26 for various signal lines, various power lines and other lines 27 to pass through, the signal lines and the power lines are hermetically connected with the test chamber 1 through the sealing joint 26, and a thread connection part of the sealing joint 26 and the test chamber 1 is provided with a raw material belt in a clamping manner, so that the sealing property is enhanced.
The specific process of performing the sequential thermal failure test of the battery by using the thermal failure test system 100 of the present embodiment is as follows:
firstly, opening a front hatch cover 3, placing a battery to be tested on an electric heating film 19, then closing the front hatch cover 3, and enabling the front hatch cover 3 to be hermetically connected with a test chamber 1; then, turning on a vacuum pump 21, vacuumizing the test chamber 1, and automatically turning off the vacuum pump 21 by a control unit when the value detected by the vacuum pressure gauge 10 reaches a set value; then, opening an explosion-proof electromagnetic valve 13 in the inflation unit 7, filling nitrogen into the test chamber 1, and when the pressure detection device 16 detects that a set value is reached, automatically closing the explosion-proof electromagnetic valve 13 in the inflation unit 7 by the control unit so as to stop inflation; then, the electric heating film 19 is controlled by the temperature control meter to linearly heat the battery to be tested until the battery is thermally invalid, the pressure in the test chamber 1 is instantly increased when the battery explodes, and the automatic pressure relief valve 17 automatically starts pressure relief when the pressure exceeds 2MPa, so that the electric heating film 19 is closed when the automatic pressure relief valve 17 automatically starts pressure relief; and then, starting the gas power element 20 to extract the gas in the test chamber 1, and introducing the gas into the gas sampling device through the pressure flow regulator 14, the dryer and the filter in sequence after the gas is extracted, so as to realize sampling. The control unit is also connected with an upper computer, and the upper computer records information such as temperature, pressure and the like in the test process through software. And then, opening the cover of the front hatch 3, and blowing high-pressure gas into the test chamber 1 by using the blowing system 9 to clean residual samples and gas in the test chamber 1 after the experiment.
In the description of the present invention, it should be noted that the terms "top", "bottom", "front", "back", "inner", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A battery thermal failure testing system, characterized by: the device comprises a test chamber, a heating unit, a sampling unit and a control unit; the test chamber is a closed chamber body, a chamber cover is detachably and hermetically connected to the test chamber, and an air pressure detection device and at least one temperature detection device are arranged in the test chamber; the heating unit comprises a heating table arranged in the test chamber and an electric heating film paved on the top surface of the heating table, and the electric heating film is electrically connected with a power supply arranged outside the test chamber; the sampling unit comprises a pneumatic element, a pressure flow regulator, a dryer, a filter and a gas sampling device which are sequentially communicated through pipelines, and the pneumatic element is also communicated with the inside of the test chamber through a pipeline; the air pressure detection device, the temperature detection device, the gas power element and the pressure flow regulator are respectively in communication connection with the control unit, and the electric heating film is electrically connected with the temperature control meter.
2. The battery thermal failure testing system of claim 1, wherein: the vacuum test chamber is characterized by further comprising a vacuum pumping unit, wherein the vacuum pumping unit comprises a vacuum pump communicated with the interior of the test chamber through a connecting pipe, and a vacuum pressure gauge is arranged on the connecting pipe; the vacuum pressure gauge and the vacuum pump are respectively in communication connection with the control unit.
3. The battery thermal failure testing system of claim 1, wherein: the test chamber is characterized by further comprising an inflation unit, wherein the inflation unit comprises a nitrogen gas source and an inflation tube, and a gas outlet of the nitrogen gas source is communicated with the interior of the test chamber through the inflation tube; and the inflation tube is provided with a pressure flow regulator and an explosion-proof electromagnetic valve which are respectively in communication connection with the control unit.
4. The battery thermal failure test system of claim 1, wherein: the test chamber is characterized by further comprising a blowing system, wherein the blowing system comprises a nitrogen source and a blowing pipe, and a gas outlet of the nitrogen source is communicated with the inside of the test chamber through the blowing pipe; and the air blowing pipe is provided with a pressure flow regulator and an explosion-proof electromagnetic valve which are respectively in communication connection with the control unit.
5. The battery thermal failure test system of claim 1, wherein: the air pressure detection device is a pressure collector.
6. The battery thermal failure testing system of claim 5, wherein: and an automatic pressure relief valve is also arranged on the test cabin.
7. The battery thermal failure test system of claim 1, wherein: the temperature detection device adopts a thermocouple, the control unit adopts a PLC programmable controller, and the gas power element is a suction pump.
8. The battery thermal failure testing system of claim 1, wherein: and a sealing joint for a signal wire and a power wire to pass through is arranged on the test chamber, and the signal wire and the power wire are hermetically connected with the test chamber through the sealing joint.
9. The battery thermal failure testing system of claim 1, wherein: the test chamber is arranged on the test stand, the test stand is made of metal, and the test chamber is grounded.
10. The battery thermal failure testing system of claim 1, wherein: the test chamber is cylindrical, the axial direction of the test chamber is horizontal, two ends of the test chamber are respectively connected with the chamber cover through flanges, and the chamber cover is an elliptical seal head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884091.XU CN217689324U (en) | 2022-04-18 | 2022-04-18 | Battery thermal failure test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884091.XU CN217689324U (en) | 2022-04-18 | 2022-04-18 | Battery thermal failure test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217689324U true CN217689324U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220884091.XU Active CN217689324U (en) | 2022-04-18 | 2022-04-18 | Battery thermal failure test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217689324U (en) |
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2022
- 2022-04-18 CN CN202220884091.XU patent/CN217689324U/en active Active
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