Method for correcting soc of discharge end battery, controller, device, system and equipment

Abstract

The application relates to the battery technical field and provides a method for correcting a battery SOC at the end of discharging, a controller, a device, a system and equipment. The method comprises the following steps: obtaining a current battery temperature, a rate, a current SOC and an actual voltage value of a battery; determining a voltage value corresponding to the current battery temperature, the rate and the current SOC based on a preset mapping relationship to obtain a query voltage value; and correcting the current SOC if the query voltage value does not match the actual voltage value, so as to solve the problem that the SOC estimation is inaccurate due to the fact that a fixed FCC update point is used as a reference point for remaining capacity correction in the prior art.

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