A Lithium-ion Battery Life Prediction Method Based on Capacity Fading Mechanism Decomposition Analysis
A lithium-ion battery, capacity decay technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem of disjointed attenuation mechanism, achieve the effect of reducing test samples and improving the accuracy of life prediction
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[0026] The present invention will be further described below with reference to the accompanying drawings through specific embodiments, which are only used to illustrate the present invention, but not to limit the protection scope of the present invention.
[0027] The lithium ion battery life prediction method based on the decomposition analysis of the capacity decay mechanism of the present invention decomposes the capacity decay of the lithium ion battery into 3 decay modes based on different chemical and physical mechanisms, and conducts different decay modes according to its chemical or physical mechanism. Regular extrapolation, the capacity decay of lithium-ion batteries is the result of the combined action of the three modes. like figure 1 As shown, the implementation steps of this prediction are as follows:
[0028] Step 1 (S1), based on the working principle of the lithium ion battery (that is, the basic electrochemical model of the lithium ion battery, which is a bas...
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