Valve-regulated lead-acid battery state evaluation method based on battery discharge behavior

The invention relates to the technical field of valve-regulated lead-acid battery state evaluation, in particular to a valve-regulated lead-acid battery state evaluation method based on a battery discharge behavior. According to the method, electricity, heat, non-linear behaviors and temperature estimation are considered, an open-circuit voltage calculation method under storage battery charging and discharging states under different working conditions is obtained through parameters during non-linear battery nuclear capacity discharging, a method for evaluating the service life of the battery through the battery internal resistance, the open-circuit voltage and the battery temperature is obtained according to experiments, in engineering application, the service life of the lead-acid storage battery can be evaluated more accurately, and during practical application, the discharge voltage within 10 hours can be deduced according to the dynamic equivalent circuit model of the valve-regulated lead-acid storage bat