Lithium battery SOC and SOH collaborative estimation method considering influence of cycle index
A cycle number, lithium battery technology, applied in calculation, measurement of electricity, measurement of electrical variables, etc., can solve problems affecting the estimation accuracy of battery SOC and SOH
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[0104] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.
[0105] The invention discloses a lithium battery SOC and SOH collaborative estimation method considering the influence of the number of cycles, and the realization process is as follows figure 1 As shown, it specifically includes the following steps:
[0106] Step 1, constructing an equivalent circuit model of a lithium battery considering the number of cycles;
[0107] The general second-order RC equivalent circuit model has been widely used in power battery modeling and state estimation due to its advantages of high computational efficiency, easy engineering implementation, and good battery dynamic behavior simulation. However, as the battery is cycled, especially ...
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