Energy storage battery health state identification method and system based on vibration signal

The invention discloses an energy storage battery health state identification method and system based on a vibration signal, and the method comprises the steps: carrying out the repeated overcharge setting of the same energy storage battery, and collecting the vibration signal of the energy storage battery during each charging period; based on the EMD of the vibration signal of the energy storagebattery, screening to obtain the characteristic identification quantity of the battery health state; and performing health state identification on the same type of energy storage batteries according to the characteristic identification quantity of the health state of the battery, thereby realizing overcharge misoperation early warning. The method and the system are easy to implement, obvious in result and high in diagnosis accuracy, the influence of multiple overcharge misoperation on the energy storage battery can be recognized, and meanwhile early warning at the initial stage of misoperationis helped to be achieved.