Method for pre-measuring volume of lithium ion battery
A lithium-ion battery and prediction method technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as practical difficulties and complex models, and achieve the effect of overcoming the long period of capacity testing and the cumbersome steps of capacity testing
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[0022] The specific content and beneficial effects of the present invention will be described in detail below in conjunction with specific embodiments, but the embodiments of the present invention are not limited thereto.
[0023] A method for predicting lithium-ion battery capacity, comprising the following steps:
[0024] The first step is to randomly select 10 batteries to be formed, with a rated capacity of 60Ah, and measure their capacity values respectively. The specific measurement method is: charge at a constant current of 0.5C to the termination voltage at room temperature, and then charge at a constant voltage to the termination current , and then discharged to the termination voltage, which is recorded as the battery capacity value, and then the average value Cm of the capacity is calculated;
[0025] In the second step, after the battery is formed and aged, charge it to the set battery state of charge (SOC) at a charging rate of 0.3C to 0.5C, and measure its open...
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