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Vibration testing is an essential method for assessing the mechanical reliability of power battery systems. This article primarily introducing the vibration testing methods of power battery systems. 1. Vibration Testing 2. Comparison of Battery System Vibration Standards 3. Vibration Testing of Power Battery Systems 1. Vibration Testing
Most testing standards for battery systems include vibration tests. The national mandatory standard GB38031 ⇱, issued in 2020, clearly defines the methods and requirements for vibration testing of power battery systems. The relevant standards for vibration testing of battery systems in both domestic and international contexts are as follows:
UN 38.3 is primarily used to simulate the vibration loads experienced by lithium batteries during transportation. The vibration test in this standard is conducted with sweep-frequency vibrations in the X, Y, and Z directions, and the vibration test level varies depending on the weight of the sample (12kg).
Power battery systems are usually fixed to the vibration table using specially designed fixtures. The main function of the fixtures is to secure the sample to the table and transmit the vibration load from the table to the test sample without distortion.
Vibration testing is generally conducted using a vibration table, which can be mechanical, hydraulic, or electric. Electric vibration tables are the most widely used, with a broad working frequency range, good vibration waveform, and easy control and operation, generally meeting the requirements for vibration tests above 2Hz.
Vibration refers to the oscillatory motion of an object relative to its equilibrium position. It is generally characterized by functions such as displacement, velocity, and acceleration that change over time. The main sources of vibration for power battery systems include road surface irregularities and motor rotation imbalances.
As the pivotal component of EVs, the power battery distinguishes itself from traditional fuel vehicles, and its performance will directly affect the whole vehicle''s performance
Vibration testing ensures lithium batteries meet safety standards like UN 38.3, mitigating risks such as leakage or fire during transportation.
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Vibration testing is an essential method for assessing the mechanical reliability of power battery systems. This article primarily introducing the vibration testing methods of power
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