CN115732787A - System and method for triggering and detecting thermal runaway of battery module - Google Patents
System and method for triggering and detecting thermal runaway of battery module Download PDFInfo
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- CN115732787A CN115732787A CN202211496902.XA CN202211496902A CN115732787A CN 115732787 A CN115732787 A CN 115732787A CN 202211496902 A CN202211496902 A CN 202211496902A CN 115732787 A CN115732787 A CN 115732787A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012806 monitoring device Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000007480 spreading Effects 0.000 claims abstract description 9
- 238000003892 spreading Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 41
- 238000004891 communication Methods 0.000 claims description 16
- 230000020169 heat generation Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 12
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- 230000005518 electrochemistry Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
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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 invention relates to the field of new energy equipment, and provides a system for triggering and detecting thermal runaway of a battery module, which is used for detecting the battery module to be tested and comprises the following components: the temperature monitoring device is provided with a plurality of temperature acquisition ends, and the temperature acquisition ends are distributed on the outer surface of the battery module to be tested; the heating device is simple and easy to obtain, and can detect thermal runaway process data in multiple dimensions through a voltage monitoring and three-dimensional temperature detection method to help technical researchers to more accurately research voltage change, temperature change in three directions of length/width/thickness, heat production rate in three directions of length/width/thickness and thermal spreading characteristics of the lithium ion battery in the whole process from thermal runaway triggering to thermal runaway occurrence.
Description
Technical Field
The invention relates to the field of new energy equipment, in particular to a system and a method for triggering and detecting thermal runaway of a battery module.
Background
At present, the lithium ion battery as a novel green energy storage medium is widely applied to the fields of consumer electronics, traffic, aerospace and energy storage, but the lithium ion battery has certain potential safety hazards. For lithium ion batteries, thermal runaway is the most serious safety accident, but a research method for thermal runaway of lithium batteries at the present stage has certain limitations, for example, in patent CN111913115A, "thermal runaway triggering method for batteries and battery testing system", a method is provided in which positive and negative electrodes of an external power supply are respectively electrically connected with a negative electrode and a casing of a battery to accelerate internal reaction of the battery to generate copper precipitation, thereby triggering internal short circuit of the battery to generate thermal runaway, but the patent does not describe signals and methods to be monitored in the thermal runaway process, and it can be seen that the existing concentration often has the problems of incomplete arrangement of centralized monitoring points, difficult realization of arrangement schemes, and over-experience.
Disclosure of Invention
The invention aims to provide a system and a method for triggering and detecting thermal runaway of a battery module, which realize comprehensive detection of thermal diffusion of the battery and reduce the difficulty in detecting the thermal runaway state of the battery module.
In order to achieve the above purpose, the invention provides the following technical scheme: a system for triggering and detecting thermal runaway of a battery module, which is used for detecting the battery module to be tested, comprises: the temperature monitoring device is provided with a plurality of temperature acquisition ends, and the temperature acquisition ends are distributed on the outer surface of the battery module to be tested; the heating device is connected with the battery module to be tested and can heat the battery module to be tested.
The module restraint tool comprises a fixing plate, an adjusting rod and an adjusting nut; the number of the fixing plates is 2, a plurality of through holes are formed in each of the two fixing plates, the through holes in the two fixing plates correspond to each other in position, two ends of each adjusting rod are inserted into one through hole in each of the two fixing plates respectively, and two ends of each adjusting rod are in threaded connection with adjusting nuts; the number of the adjusting rods is 4, the number of the through holes in each fixing plate is 4, and the adjusting rods are vertically arranged relative to the fixing plates; the to-be-tested battery modules are positioned between the two fixing plates, and the adjusting rods are positioned on two sides of the to-be-tested battery modules.
Furthermore, the battery module to be tested comprises a plurality of batteries which are arranged in sequence, a heat insulation sheet is arranged between every two adjacent batteries, and a heat insulation sheet is also arranged between the battery module to be tested and the fixing plate.
Further, heating device includes the hot plate, the hot plate sets up the fixed plate with await measuring between the battery module.
Further, the quantity of temperature monitoring device is a plurality of, every temperature monitoring device with one the battery is connected, the quantity of temperature monitoring device's temperature acquisition end is 6, wherein 4 the temperature acquisition end is located respectively the center of 4 sides of battery, remaining 2 the temperature acquisition end is located respectively the anodal and the negative pole of battery.
Further, still include the proof box, frock is restricted to the module, temperature monitoring device with heating device all is located the proof box, be equipped with the window on the outer wall of proof box.
The LED explosion-proof test box further comprises an LED illuminating lamp, an explosion-proof valve and a camera, wherein the camera and the LED illuminating lamp are arranged on the inner wall of the test box, an explosion-proof mounting port is formed in the outer wall of the test box, and the explosion-proof valve is arranged in the explosion-proof mounting port.
The fire detector is arranged on the inner wall of the test box, a pipeline mounting hole and a communication mounting hole are formed in the outer wall of the test box, the pipeline interface is arranged in the pipeline mounting hole, and the communication interface is arranged in the communication mounting hole; the fire-fighting host machine is connected with the pressure pump through a connecting pipe, and can control the running state of the pressure pump according to the detection result of the fire detector.
Further, the battery voltage monitoring device comprises a plurality of voltage monitoring devices, each voltage monitoring device is connected with one battery, each voltage monitoring device is provided with two voltage acquisition ends, and the two voltage acquisition ends are respectively connected with the anode and the cathode of each battery.
In another aspect, a method of triggering and detecting thermal runaway in a battery module is provided, comprising: heating one side of the battery module to be tested; detecting the temperature change, the heat generation rate and the heat spreading characteristic of the battery module to be tested in the length direction, the width direction and the thickness direction of the battery module to be tested; and confirming the thermal runaway trigger critical point of the battery module to be tested according to the temperature change, the heat generation rate and the thermal spreading characteristics of the battery module to be tested in the length direction, the width direction and the thickness direction.
The system and the method have the advantages that the heating device is simple and easy to obtain, and can detect thermal runaway process data in multiple dimensions through a voltage monitoring and three-dimensional temperature detection method, so that technical researchers can be helped to more accurately research voltage change, temperature change in the three directions of length/width/thickness, heat generation rate in the three directions of length/width/thickness, thermal spreading characteristics and the like of the lithium ion battery in the whole process from the thermal runaway triggering to the thermal runaway occurrence, and a thermal runaway triggering critical point can be accurately analyzed; in addition, the voltage monitoring point is arranged, so that researchers can realize the charging and discharging of the battery through the voltage monitoring loop, and realize the compatibility of various thermal runaway triggering modes such as heating, overcharging, overdischarging and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic view of the internal structure of the test chamber according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a module restraining tool and a battery according to an embodiment of the invention.
FIG. 4 is a schematic diagram of a module level and a box level thermal runaway test according to an embodiment of the invention.
Fig. 5 is a schematic layout of a temperature monitoring device and a voltage monitoring device according to an embodiment of the present invention.
Description of reference numerals: 1. a test chamber; 2. a fixing plate; 3. adjusting a rod; 4. adjusting the nut; 5. a heating device; 6. a battery; 7. a heat insulating sheet; 8. a temperature monitoring device; 9. a voltage monitoring device; 10. a window; 11. an explosion-proof valve; 12. a pipeline interface; 13. a communication interface; 14. a fire detector.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed connections and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," "third," and "fourth," etc. may be used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of an individual component.
As shown in fig. 1 to 3, according to an embodiment of the present invention, there is provided a system for triggering and detecting thermal runaway of a battery module, for detecting a battery module to be tested, including: the temperature monitoring device 8 is provided with a plurality of temperature acquisition ends, and the temperature acquisition ends are distributed on the outer surface of the battery module to be tested; heating device 5, heating device 5 is connected with the examination battery module that awaits measuring, and heating device 5 can heat the examination battery module that awaits measuring, and the module is restrained the frock and can be restricted the examination battery module that awaits measuring in fixed position to be convenient for going on of thermal runaway test, temperature monitoring device 8 can gather each position of examination battery module that awaits measuring because a plurality of temperature acquisition end have, thereby obtain more detailed and comprehensive temperature data.
Preferably, the test device further comprises a module restraining tool, the module restraining tool is provided with two extrusion ends, the battery module to be tested is positioned between the two extrusion ends, and the module restraining tool can adjust the distance between the two extrusion ends so as to clamp the battery module to be tested; the module restraint tool comprises a fixing plate 2, an adjusting rod 3 and an adjusting nut 4; the number of the fixing plates 2 is 2, a plurality of through holes are formed in each of the two fixing plates 2, the positions of the through holes in the two fixing plates 2 correspond to each other, two ends of each adjusting rod 3 are respectively inserted into one through hole in each of the two fixing plates 2, and two ends of each adjusting rod 3 are in threaded connection with adjusting nuts 4; adjust the quantity of pole 3 and be 4, the quantity of through-hole on every fixed plate 2 is 4, it sets up perpendicularly for fixed plate 2 to adjust pole 3, because the battery module that awaits measuring is vertical when the test to be placed on the plane, the one side that also has the electrode is located the top, when so setting up, the module is restrained the frock and mainly need consider fixing the battery module that awaits measuring in week, so that make the battery module that awaits measuring when the test remain stable, adjust the both sides that pole 3 is located the battery module that awaits measuring, because adjust the both sides that pole 3 is located the battery module that awaits measuring, can fix the battery module that awaits measuring effectively.
Preferably, the battery module to be tested comprises a plurality of batteries 6 arranged in sequence, a heat insulation sheet 7 is arranged between two adjacent batteries 6, and a heat insulation sheet 7 is also arranged between the battery module to be tested and the fixing plate 2.
Preferably, heating device 5 includes the hot plate, and the hot plate setting is between fixed plate 2 and the examination battery module of awaiting measuring, and the hot plate heats the first battery 6 of examination battery module of awaiting measuring to the influence that brings for whole examination battery module of awaiting measuring when simulating out battery 6 thermal runaway.
Preferably, as shown in fig. 5, the number of the temperature monitoring devices 8 is plural, each temperature monitoring device 8 is connected to one battery 6, the number of the temperature collecting terminals of the temperature monitoring devices 8 is 6, wherein 4 temperature collecting terminals are respectively located at the centers of 4 side surfaces of the battery 6, and the remaining 2 temperature collecting terminals are respectively located at the positive electrode and the negative electrode of the battery 6, during an actual test, a user can also set the temperature collecting terminals located at the 4 side surfaces of the battery 6 at appropriate positions of the corresponding side surfaces according to actual requirements, on one hand, the arrangement mode of the 6 temperature collecting terminals can effectively collect temperature changes of the battery 6 in three directions of length, width and thickness when the thermal runaway occurs, and in fig. 5, circular dots represent contact points of the temperature collecting sections and the battery 6.
Preferably, the device further comprises a plurality of voltage monitoring devices 9, each voltage monitoring device 9 is connected with one battery 6, and each voltage monitoring device 9 is provided with two voltage collecting ends which are respectively connected with the positive pole and the negative pole of the battery 6.
Preferably, still including proof box 1, frock, temperature monitoring device 8 and heating device 5 are all located proof box 1 are restricted to the module, are equipped with window 10 on proof box 1's the outer wall, and window 10 can make things convenient for the researcher directly to shoot and observe inside phenomenon externally.
Preferably, as shown in fig. 4, the thermal runaway protector further comprises an LED lighting lamp, an explosion-proof valve 11 and a camera, wherein the camera and the LED lighting lamp are arranged on the inner wall of the test box 1, an explosion-proof mounting port is arranged on the outer wall of the test box 1, and the explosion-proof valve 11 is arranged in the explosion-proof mounting port and is applied to module-level and box-level thermal runaway tests and related tests. Can directly arrange heating device 5 in advance in the await measuring battery module, and arrange the temperature monitoring position and the voltage monitoring position of each battery 6, will arrange the await measuring battery module of good again and place in proof box 1, constitute the system that possesses the thermal runaway function that triggers and control the await measuring battery module, can carry out battery 6 module, the test of plug-in box level thermal runaway, the thermal runaway diffusion test, the thermal insulation material capability test, the heat dissipation heat conduction material, the structural performance test, the thermal runaway diffusion test, 11 capability test of explosion-proof valve, the relevant test of battery 6 system fire extinguishing system, BMS thermal management is relevant to verify the experiment etc..
Preferably, the fire protection device further comprises a fire detector 14, a fire-fighting host, a pipeline interface 12, a storage device, a pressure pump and a communication interface 13, wherein the fire detector 14 is arranged on the inner wall of the test box 1, a pipeline mounting hole and a communication mounting hole are formed in the outer wall of the test box 1, the pipeline interface 12 is arranged in the pipeline mounting hole, and the communication interface 13 is arranged in the communication mounting hole; communication interface 13 is connected with fire detector 14, the fire engine simultaneously, pipeline interface 12 is connected with force pump and storage device in proper order through the connecting pipe, the fire engine is connected with the force pump, the fire engine can be according to the operating condition of the detection result control force pump of fire detector 14, this system also can be used to power or the fire system verification of the large-scale electrochemistry energy storage device of energy storage project field, when in actual use, can arrange corresponding fire detector 14 or other compound detectors that have fire detection function in proof box 1, be connected proof box 1 with the fire engine through pipeline interface 12 and communication line interface that reserve, constitute a large-scale electrochemistry energy storage fire control test system, thereby can verify fire engine, the function of force pump, the tactics validity of fire engine, reliability etc. of fire detector 14 in electrochemistry conflagration, and reserve various joints and can ensure to predetermine other types of detector for the inside under the prerequisite of not destroying the box body leakproofness of fire engine 1, heating device 5, the sensor, fire control pipeline etc. provides the passageway, can develop more complicated test personnel on the basis of this system for the research of laying line.
The invention also discloses a method for triggering and detecting the thermal runaway of the battery module, which comprises the following steps: heating one side of the battery module to be tested; detecting the temperature change, the heat generation rate and the heat spreading characteristic of the battery module to be tested in the length direction, the width direction and the thickness direction of the battery module to be tested; according to the temperature change, the heat production rate and the thermal spreading characteristic of the battery module to be tested in the length direction, the width direction and the thickness direction, the thermal runaway trigger critical point of the battery module to be tested is confirmed, and through the test box with the configuration window and a plurality of reserved communication interfaces, pipeline interfaces and explosion-proof valve mounting ports, other more professional and complex material level and system level test verification can be derived and developed, and meanwhile, the phenomenon of the thermal runaway process can be visually observed.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: therefore, on the premise of ensuring that the system is close to the practical application scene, the single or module thermal runaway test system which has a simple triggering device, a voltage monitoring function and three-dimensional temperature monitoring is realized by simplifying a thermal runaway triggering mode, scientifically and reasonably arranging temperature monitoring points and increasing voltage monitoring signals. The invention can monitor the lithium battery characteristics in the thermal runaway process from two levels of voltage and temperature, and in the aspect of temperature monitoring, the invention provides a three-dimensional temperature monitoring point arrangement scheme aiming at a square battery, which can comprehensively collect temperature data in the thickness direction, the length direction and the height direction in the thermal runaway process of the battery so as to help researchers to more comprehensively monitor the thermal runaway process.
Compared with the prior art, the heating device is simple and easy to obtain, and can detect thermal runaway process data in multiple dimensions by a voltage monitoring and three-dimensional temperature detection method, so that technical researchers can be helped to more accurately research voltage change, temperature change in the length/width/thickness directions, heat production rate in the length/width/thickness directions, thermal spreading characteristics and the like of the lithium ion battery in the whole process from thermal runaway triggering to thermal runaway occurrence, and finally accurately analyze a thermal runaway triggering critical point; in addition, the voltage monitoring point is arranged, so that researchers can realize the detection of the charging and discharging of the battery through the voltage monitoring loop, and realize the compatibility of various thermal runaway triggering modes such as heating, overcharging, overdischarging and the like.
The invention can be used for thermal runaway monitoring only, can also enable researchers to monitor the thermal runaway process of the battery comprehensively, and can carry out related safety and performance tests of a material level, a module level and a PACK level by referring to the system, such as a thermal insulation material performance test, a heat dissipation and heat conduction material/structure performance test, a thermal runaway diffusion test, an explosion-proof valve performance test, a battery system fire protection system related test and a BMS thermal management related verification test.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A system for triggering and detecting thermal runaway of a battery module is used for detecting the battery module to be tested, and is characterized by comprising:
the temperature monitoring device is provided with a plurality of temperature acquisition ends, and the temperature acquisition ends are distributed on the outer surface of the battery module to be tested;
the heating device is connected with the battery module to be tested and can heat the battery module to be tested.
2. The system for triggering and detecting thermal runaway of a battery module of claim 1, further comprising a module restraint fixture, wherein the module restraint fixture comprises a fixed plate, an adjustment rod and an adjustment nut;
the number of the fixing plates is 2, a plurality of through holes are formed in each of the two fixing plates, the through holes in the two fixing plates correspond to each other in position, two ends of each adjusting rod are respectively inserted into one through hole in each of the two fixing plates, and two ends of each adjusting rod are in threaded connection with adjusting nuts;
the number of the adjusting rods is 4, the number of the through holes on each fixing plate is 4, and the adjusting rods are vertically arranged relative to the fixing plates;
the to-be-tested battery module is positioned between the two fixing plates, and the adjusting rods are positioned on two sides of the to-be-tested battery module.
3. The system for triggering and detecting the thermal runaway of the battery module as claimed in claim 2, wherein the battery module to be tested comprises a plurality of batteries arranged in sequence, a heat insulation sheet is arranged between two adjacent batteries, and a heat insulation sheet is also arranged between the battery module to be tested and the fixing plate.
4. The system for triggering and detecting the thermal runaway of a battery module as claimed in claim 3, wherein the heating device comprises a heating plate disposed between the fixing plate and the battery module to be tested.
5. The system for triggering and detecting thermal runaway of a battery module as claimed in claim 3, wherein the number of the temperature monitoring devices is multiple, each temperature monitoring device is connected to one of the batteries, the number of the temperature acquisition ends of the temperature monitoring devices is 6, 4 of the temperature acquisition ends are respectively located at the center of 4 sides of the battery, and the remaining 2 temperature acquisition ends are respectively located at the positive electrode and the negative electrode of the battery.
6. The system of claim 1, further comprising a test chamber, wherein the module restraint fixture, the temperature monitoring device and the heating device are all located in the test chamber, and a window is disposed on an outer wall of the test chamber.
7. The system for triggering and detecting the thermal runaway of the battery module according to claim 6, further comprising an LED illuminating lamp, an explosion-proof valve and a camera, wherein the camera and the LED illuminating lamp are arranged on the inner wall of the test box, an explosion-proof mounting opening is arranged on the outer wall of the test box, and the explosion-proof valve is arranged in the explosion-proof mounting opening.
8. The system for triggering and detecting the thermal runaway of the battery module according to claim 7, further comprising a fire detector, a fire host, a pipeline interface, a storage device, a pressure pump and a communication interface, wherein the fire detector is arranged on the inner wall of the test box, a pipeline mounting hole and a communication mounting hole are arranged on the outer wall of the test box, the pipeline interface is arranged in the pipeline mounting hole, and the communication interface is arranged in the communication mounting hole;
the fire-fighting host machine is connected with the pressure pump through a connecting pipe, and can control the running state of the pressure pump according to the detection result of the fire detector.
9. The system for triggering and detecting thermal runaway of a battery module of claim 3, further comprising a plurality of voltage monitoring devices, each of the voltage monitoring devices being connected to one of the batteries, the voltage monitoring devices having two voltage acquisition terminals, the two voltage acquisition terminals being connected to the positive and negative electrodes of the battery, respectively.
10. A method of triggering and detecting thermal runaway in a battery module, comprising:
heating one side of the battery module to be tested;
detecting the temperature change, the heat generation rate and the heat spreading characteristic of the battery module to be tested in the length direction, the width direction and the thickness direction of the battery module to be tested;
and confirming the thermal runaway trigger critical point of the battery module to be tested according to the temperature change, the heat generation rate and the thermal spreading characteristics of the battery module to be tested in the length direction, the width direction and the thickness direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211496902.XA CN115732787A (en) | 2022-11-25 | 2022-11-25 | System and method for triggering and detecting thermal runaway of battery module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211496902.XA CN115732787A (en) | 2022-11-25 | 2022-11-25 | System and method for triggering and detecting thermal runaway of battery module |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109916454A (en) * | 2019-04-09 | 2019-06-21 | 福建易动力电子科技股份有限公司 | A kind of battery system thermal runaway simulator |
| CN210576305U (en) * | 2019-09-27 | 2020-05-19 | 天津力神电池股份有限公司 | Lithium ion battery thermal runaway test fixture |
| CN112526360A (en) * | 2019-09-18 | 2021-03-19 | 清华大学 | Battery module thermal runaway test triggering and monitoring system and method |
| CN113067048A (en) * | 2021-03-11 | 2021-07-02 | 奇瑞新能源汽车股份有限公司 | Thermal trigger simulation device and method for electric vehicle |
| CN216285625U (en) * | 2021-10-26 | 2022-04-12 | 东软睿驰汽车技术（沈阳）有限公司 | Battery module thermal runaway testing arrangement and test system |
-
2022
- 2022-11-25 CN CN202211496902.XA patent/CN115732787A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916454A (en) * | 2019-04-09 | 2019-06-21 | 福建易动力电子科技股份有限公司 | A kind of battery system thermal runaway simulator |
| CN112526360A (en) * | 2019-09-18 | 2021-03-19 | 清华大学 | Battery module thermal runaway test triggering and monitoring system and method |
| CN210576305U (en) * | 2019-09-27 | 2020-05-19 | 天津力神电池股份有限公司 | Lithium ion battery thermal runaway test fixture |
| CN113067048A (en) * | 2021-03-11 | 2021-07-02 | 奇瑞新能源汽车股份有限公司 | Thermal trigger simulation device and method for electric vehicle |
| CN216285625U (en) * | 2021-10-26 | 2022-04-12 | 东软睿驰汽车技术（沈阳）有限公司 | Battery module thermal runaway testing arrangement and test system |
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Application publication date: 20230303 |