Vehicle lithium battery first-order RC equivalent circuit model parameter identification and SOH estimation method

The invention provides a vehicle lithium battery first-order RC equivalent circuit model parameter identification and SOH estimation method for overcoming the defects in the prior art. The method comprises the following steps: 1) chaotic system unknown parameter identification principle analysis; (2) electronic components such as a charge-controlled memristor are used as loads to be connected to the output end of the first-order RC equivalent circuit model, and a fourth-order chaotic system is established; the invention discloses a first-order RC equivalent circuit model parameter identification and SOH estimation.The first-order RC equivalent circuit model parameter identification and SOH estimation method based on the four-order chaotic system.The first-order RC equivalent circuit model parameter identification and SOH estimation method based on the four-order chaotic system has the advantages of being high in accuracy and stability, high in convergence speed and high in nonlinear prediction capacity. 本发明针对