CN114335760A - Battery pack fire extinguishing function test system - Google Patents
Battery pack fire extinguishing function test system Download PDFInfo
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- CN114335760A CN114335760A CN202011026509.5A CN202011026509A CN114335760A CN 114335760 A CN114335760 A CN 114335760A CN 202011026509 A CN202011026509 A CN 202011026509A CN 114335760 A CN114335760 A CN 114335760A
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- fire extinguishing
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- oscilloscope
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000010304 firing Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 230000001629 suppression Effects 0.000 claims 2
- 239000007789 gas Substances 0.000 description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001960 triggered effect Effects 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 a battery pack fire extinguishing function testing system, which comprises: the system comprises a background system, a firing signal simulation device, an oscilloscope and a communication network; the background system and the fire extinguishing controller to be tested are connected to the communication network; the ignition signal simulation device comprises a plurality of signal generators, and the signal generators are used for simulating a gas sensor and a temperature sensor; the background system is in control connection with the firing signal simulation device and is used for sending a control instruction, and the firing signal simulation device adjusts the output of the signal generator after receiving the control instruction; the oscilloscope is connected with the fire extinguishing controller to be tested; and the background system and the oscilloscope are used for monitoring the program execution condition of the fire extinguishing controller to be tested. The test system does not need to be provided with a real ignition scene, real various gas sensors and temperature sensors, and a real fire extinguishing execution device, and has high test safety and low cost.
Description
Technical Field
The invention relates to a battery pack fire extinguishing function testing system.
Background
With the gradual upgrade of green energy and environmental protection concepts, the power lithium ion battery products are increased explosively, but once the lithium ion battery is in an abuse state, the battery is easy to generate thermal runaway, so that combustion and explosion are generated, and dangers are caused to property and personnel safety. In recent years, with the popularization and promotion of electric vehicles, ignition of electric vehicles occurs on the market, so that the national and terminal customers pay particular attention to the thermal safety of power battery products.
In order to solve the ignition problem of the power battery system, the fire extinguishing technology is very important, the lithium ion battery fire extinguishing technology can rapidly inhibit the temperature of the battery from rising after the thermal runaway of the battery occurs, but whether the function of the fire extinguishing system meets the market demand or not and whether the performance reliability of the fire extinguishing system is the key point of attention of experts in the industry.
Generally speaking, fire extinguishing tests need to build a test environment which accords with the real situation as much as possible according to the actual situation. However, fire extinguishing tests have certain dangerousness, and the test platform is usually disposable, so that the test safety is low, and the cost is high. How to establish a quick, comprehensive, accurate and high-cost-performance fire extinguishing test system becomes a problem to be solved urgently.
Disclosure of Invention
An object of this application is to provide a battery package function test system that puts out a fire for solve the security that how to put out a fire the test low, with high costs problem.
In order to achieve the above object, the present invention provides a fire extinguishing function testing system for a battery pack, comprising: the system comprises a background system, a firing signal simulation device, an oscilloscope and a communication network; the background system and the fire extinguishing controller to be tested are connected to the communication network; the ignition signal simulation device comprises a plurality of signal generators, the output of each signal generator is connected with an acquisition port of the fire extinguishing controller to be tested, and the signal generators are used for simulating a gas sensor and a temperature sensor; the background system is in control connection with the firing signal simulation device and is used for sending a control instruction, and the firing signal simulation device adjusts the output of the signal generator after receiving the control instruction; the oscilloscope is connected with the fire extinguishing controller to be tested; and the background system and the oscilloscope are used for monitoring the program execution condition of the fire extinguishing controller to be tested.
Furthermore, the plurality of signal generators comprise at least one current analog quantity signal generator and at least one voltage analog quantity signal generator, wherein the current analog quantity signal generator is used for simulating the gas sensor, and the voltage analog quantity signal generator is used for simulating the temperature sensor.
Furthermore, a battery management system is connected to the communication network.
Further, the communication network is a CAN network.
Further, the background system comprises one upper computer or two upper computers.
The plurality of signal generators of the ignition signal simulation device simulate various gas sensors and temperature sensors, and the background system and the oscilloscope can monitor the program execution condition of the fire extinguishing controller to be tested, so that the test system does not need to be provided with a real ignition scene, real various gas sensors and temperature sensors, or a real fire extinguishing execution device, and has high test safety and low cost.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
Example 1
As shown in fig. 1, a fire extinguishing function testing system for a battery pack includes: the system comprises an upper computer, a battery management system, a fire extinguishing controller, a fire signal simulation device and an oscilloscope; the upper computer, the battery management system and the fire extinguishing controller are connected in the CAN network, and the connection relation among the devices in the whole vehicle is reproduced.
Wherein, fire extinguishing controller belongs to the equipment that awaits measuring, and fire extinguishing controller includes a plurality of collection ports for connect the analog signal of gas concentration sensor and temperature sensor output.
The fire signal simulation device employs an analog signal generation device (commercially available product) having a plurality of signal generators (alternatively referred to as analog quantity signal generators and analog quantity signal generation channels) disposed therein. For example, the signal generator ch1, the signal generator ch2, the signal generator ch3 and the signal generator ch4 are current analog quantity signal generators for simulating the output of the gas sensor. dh5 is a voltage analog signal generator for simulating the output of the temperature sensor inside the battery pack (i.e. simulating the surface temperature change of the battery core). The current analog quantity is obtained by adjusting the constant current source, and the voltage analog quantity is generated by utilizing the voltage division of the high-precision program control rheostat.
In this embodiment, the output of the current analog quantity signal generator is 0 to 40mA, which is respectively used for simulating a current signal generated by a gas detection sensor triggered by gas (carbon monoxide, carbon dioxide, hydrogen, methane, and ethane) generated after combustion of a lithium battery, and simulating a gas concentration change condition in a battery box after thermal runaway of a battery core occurs.
The upper computer adopts a PC. The serial port of the upper computer is connected with the serial port of the ignition signal simulation device, the upper computer can send out related instructions through the serial port, and the ignition signal simulation device can control the output of the current analog quantity and the voltage analog quantity according to the related instructions. Meanwhile, whether the battery management system and the fire extinguishing controller send out accurate signals according to requirements is monitored.
The battery management system collects the battery voltage and the battery temperature (the temperature is the problem measured by the battery management system, and the voltage analog quantity signal generator simulates an independent temperature sensor), when the battery is out of control due to heat, the BMS detects that the battery temperature is abnormally increased, and the BMS transmits a high-temperature early warning signal to the fire extinguishing controller through CAN communication.
The key of the embodiment is as follows:
the fire signal simulation device is provided with a plurality of signal generators, and the signal generators are connected with a collection port of a fire extinguishing controller. Because the acquisition port of the fire extinguishing controller is connected with various gas sensors and temperature sensors when in use, the fire signal simulation device simulates various gas sensors and temperature sensors. Therefore, the test system does not need to be provided with a real ignition scene and real various gas sensors and temperature sensors, namely, the test system does not need to build a real thermal runaway test platform, but can generate corresponding signals through simulation so as to test the fire extinguishing controller. The test has high safety and low cost.
2, the system is not provided with actual fire extinguishing execution equipment, but monitors the program execution condition in the fire extinguishing controller through an upper computer and an oscilloscope. For example, a relevant program algorithm, that is, a judgment logic is stored in the fire extinguishing controller, and whether to execute a fire extinguishing action is judged according to the acquired information. When the judgment logic is met, the fire extinguishing controller sends a ready signal, and when the judgment logic is met and lasts for a period of time, the fire extinguishing controller sends a trigger signal to trigger the fire extinguishing execution device. The ready signal and the trigger signal are connected to the oscilloscope, so that the oscilloscope can display the waveforms of the signals, and the delay time between the two signals can be read according to the waveforms. Similarly, the fire extinguishing controller uploads the ready signal and the trigger signal to the CAN network in a message form, so that the upper computer CAN monitor the execution condition of the fire extinguishing controller. The upper computer and the oscilloscope monitor the program execution condition of the fire extinguishing controller in respective ways, and misjudgment is avoided.
The working principle is as follows:
a. selecting a proper gas sensor according to gas components released by thermal runaway of the single battery cell, and designing the output range of signals of each current signal generator according to the type of the gas sensor so as to enable the output range to correspond to the output range of the gas sensor.
b. According to the temperature sensors at all positions of the battery core layout when the battery core is out of control due to heat, the output range of the voltage signal generator is designed to correspond to the output range of the temperature sensors.
c. The output response time and the signal amplitude of the current and voltage signal generator can be adjusted through the upper computer, so that a test can be designed according to the actual thermal runaway condition, any scene in the thermal runaway process of the battery core can be simulated, and the test scene is easy to control.
d. The battery management system and the fire extinguishing controller can be jointly adjusted. The battery management system sampling temperature value and the system SOC value are output to the fire extinguishing control system in real time, and the fire extinguishing control system can be used as the reference of the thermal runaway condition and the fire extinguishing action according to the acquisition information of the battery management system, so that the practical application scene is fitted.
In the above embodiments, the design of the current analog quantity signal generator to simulate the gas sensor and the design of the voltage analog quantity signal to simulate the temperature sensor are selected according to the principles of a general gas sensor and a temperature sensor.
In the above embodiment, the fire signal simulation device communicates with the upper computer through a serial port. Other types of communication channels may be contemplated as other embodiments.
In the above embodiments, the CAN network is used as an interactive communication network between devices. Other types of communication networks may be used as well, as other embodiments.
Example 2
Referring to fig. 2, the embodiment 2 is different from the embodiment 1 only in that two upper computers are adopted, including an upper computer 1 and an upper computer 2, the upper computer 1 is used for monitoring a fire extinguishing controller, and the upper computer 2 is used for controlling a fire signal simulation device.
Claims (5)
1. A battery pack fire extinguishing function test system is characterized by comprising: the system comprises a background system, a firing signal simulation device, an oscilloscope and a communication network; the background system and the fire extinguishing controller to be tested are connected to the communication network; the ignition signal simulation device comprises a plurality of signal generators, the output of each signal generator is connected with an acquisition port of the fire extinguishing controller to be tested, and the signal generators are used for simulating a gas sensor and a temperature sensor; the background system is in control connection with the firing signal simulation device and is used for sending a control instruction, and the firing signal simulation device adjusts the output of the signal generator after receiving the control instruction; the oscilloscope is connected with the fire extinguishing controller to be tested; and the background system and the oscilloscope are used for monitoring the program execution condition of the fire extinguishing controller to be tested.
2. The battery pack fire suppression functionality test system of claim 1, wherein the number of signal generators includes at least one current analog signal generator for simulating a gas sensor and at least one voltage analog signal generator for simulating a temperature sensor.
3. The fire extinguishing function testing system for the battery pack according to claim 1 or 2, wherein a battery management system is further connected to the communication network.
4. The system for testing the fire extinguishing function of a battery pack according to claim 1, wherein the communication network is a CAN network.
5. The fire suppression test system for battery packs according to claim 1, wherein the background system comprises one upper computer or two upper computers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026509.5A CN114335760A (en) | 2020-09-25 | 2020-09-25 | Battery pack fire extinguishing function test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026509.5A CN114335760A (en) | 2020-09-25 | 2020-09-25 | Battery pack fire extinguishing function test system |
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| CN114335760A true CN114335760A (en) | 2022-04-12 |
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| CN202011026509.5A Pending CN114335760A (en) | 2020-09-25 | 2020-09-25 | Battery pack fire extinguishing function test system |
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|---|---|---|---|---|
| KR20070006000A (en) * | 2005-07-05 | 2007-01-11 | 삼성에스디아이 주식회사 | System for extinguishing fire of secondary battery module |
| JP2017058990A (en) * | 2015-09-17 | 2017-03-23 | ニッタン株式会社 | Test system |
| CN107546857A (en) * | 2017-09-07 | 2018-01-05 | 北方奥钛纳米技术有限公司 | The test system and method for energy-storage system |
| CN107677968A (en) * | 2017-09-30 | 2018-02-09 | 中国汽车技术研究中心 | A kind of battery thermal runaway and thermal runaway extend test system |
| CN108534819A (en) * | 2018-06-04 | 2018-09-14 | 西安太世德航空电器有限公司 | A kind of constant current or constant pressure sensor analog system and method |
| CN110068763A (en) * | 2019-05-30 | 2019-07-30 | 国网安徽省电力有限公司电力科学研究院 | A kind of battery thermal safety and fire extinguishing system comprehensive detection platform |
| CN110988714A (en) * | 2019-11-11 | 2020-04-10 | 天津大学 | Lithium battery fire hazard comprehensive testing system and method |
| CN210604920U (en) * | 2019-08-21 | 2020-05-22 | 热测测试技术(苏州)有限公司 | A testing arrangement for car power battery package safety |
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2020
- 2020-09-25 CN CN202011026509.5A patent/CN114335760A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070006000A (en) * | 2005-07-05 | 2007-01-11 | 삼성에스디아이 주식회사 | System for extinguishing fire of secondary battery module |
| JP2017058990A (en) * | 2015-09-17 | 2017-03-23 | ニッタン株式会社 | Test system |
| CN107546857A (en) * | 2017-09-07 | 2018-01-05 | 北方奥钛纳米技术有限公司 | The test system and method for energy-storage system |
| CN107677968A (en) * | 2017-09-30 | 2018-02-09 | 中国汽车技术研究中心 | A kind of battery thermal runaway and thermal runaway extend test system |
| CN108534819A (en) * | 2018-06-04 | 2018-09-14 | 西安太世德航空电器有限公司 | A kind of constant current or constant pressure sensor analog system and method |
| CN110068763A (en) * | 2019-05-30 | 2019-07-30 | 国网安徽省电力有限公司电力科学研究院 | A kind of battery thermal safety and fire extinguishing system comprehensive detection platform |
| CN210604920U (en) * | 2019-08-21 | 2020-05-22 | 热测测试技术(苏州)有限公司 | A testing arrangement for car power battery package safety |
| CN110988714A (en) * | 2019-11-11 | 2020-04-10 | 天津大学 | Lithium battery fire hazard comprehensive testing system and method |
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