Method for estimating electric quantity SOC of lithium iron phosphate battery hybrid vehicle and vehicle

The invention relates to a method for estimating the electric quantity SOC of a lithium iron phosphate battery hybrid vehicle and the vehicle, and belongs to the technical field of lithium iron phosphate battery SOC. The scheme comprises the following steps: when any SOC correction opportunity is satisfied, acquiring the total SOC and the total credibility under the current correction opportunity; judging whether the sub-credibility corresponding to the current correction opportunity is greater than the total credibility, if so, correcting the current SOC at the correction opportunity to obtain an SOC correction value, and estimating an SOC final value based on the SOC correction value, the total SOC and the sub-credibility corresponding to the current correction opportunity; if not, the SOC is not corrected at the moment; wherein the total credibility is related to the capacity cycle index from the last correction to the moment, and the larger the capacity cycle index from the last correction to the moment i