New energy automobile battery pack sealing performance test method
A new energy vehicle and testing method technology, applied in the field of new energy vehicle battery pack sealing test, can solve the problems of low precision, more investment, unstable testing process, etc., and achieve the effect of ensuring accuracy and a high degree of automation
Pending Publication Date: 2021-04-06
芜湖奇达动力电池系统有限公司
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Problems solved by technology
[0003] At present, the function of the electric vehicle battery system sealing test equipment used in the new energy vehicle industry is not perfect, the test equipment is not highly integrated, the test process is complicated and the automation is not high, and the battery pack sealing and liquid cooling system sealing testing cannot be carried out simultaneously. , need to invest in more workstations and personnel; the testing equipment used in the industry is not accurate enough to identify the leakage point of the electric vehicle battery system, and cannot accurately and quickly lock the leakage point; at the same time, the accuracy of the testing process of the existing testing equipment is not high. High and the detection process and results are affected by environmental factors such as external temperature, humidity, air pressure, etc., resulting in unstable test process and inaccurate test results
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[0051] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.
[0052] Such as figure 1 As shown, the present invention provides a new energy vehicle battery pack sealing test method, comprising the following steps:
[0053] S1. Build new energy vehicle battery pack sealing test equipment;
[0054] S2. Start-up of the new energy vehicle battery pack airtightness test equipment: connect the battery pack under test to the airtight detection device 3, connect the airtight detection device 3 to the air source 1, and use the explosion-proof valve airtight tooling 18 to seal the explosion-proof of the battery pack Valve, use the socket airtight plug 22 to seal the...
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The invention discloses a new energy automobile battery pack sealing performance test method. The method comprises the steps: S1, building new energy automobile battery pack sealing performance test equipment; S2, starting a new energy automobile battery pack sealing performance test device; S3, guiding a gas to an explosion-proof valve of a battery pack by the battery pack sealing loop of the new energy automobile battery pack sealing performance test equipment until a battery pack airtightness test is qualified; and S4, guiding a gas into a liquid cooling system in the battery pack by the liquid cooling system sealing loop of the new energy automobile battery pack sealing performance test equipment until a liquid cooling system airtightness test is qualified. According to the new energy automobile battery pack sealing performance test method, the special test equipment with high integration degree is adopted, the automation degree of the test process is high, the test equipment is provided with two independent loops to simultaneously detect the battery pack and the liquid cooling system loop, and the detection of the sealing performance of the power battery pack and the liquid cooling system can be rapidly and effectively realized.
Description
technical field [0001] The invention belongs to the technical field of power batteries of new energy vehicles, in particular, the invention relates to a method for testing the sealing performance of battery packs of new energy vehicles. Background technique [0002] With the support of the country's continuous new energy policy, the key technologies of new energy vehicles in my country have made significant progress. The new energy vehicle battery system mainly includes a battery module, a high-voltage connection module, a low-voltage acquisition module, and a BMS (battery management system) control module. Each module has extremely high requirements on temperature and humidity. Once the seal of the battery pack and the liquid cooling system fails, water vapor and Coolant intrusion into the battery pack will cause irreversible consequences to the company's property and personnel safety, ranging from abnormal collection of the system, reduced accuracy, insulation failure, and...
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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 朱贤胜杨兵肖峰母壮壮徐翔龙
Owner 芜湖奇达动力电池系统有限公司