Fast charge map switching method and device and electronic equipment

Abstract

The invention discloses a fast charge map switching method and device and electronic equipment, the fast charge map switching method and device are applied to a battery management system, a plurality of fast charge maps under different preset constraint conditions are preset in the battery management system, the preset constraint conditions comprise temperature constraint and temperature difference constraint, and the method comprises the following steps: acquiring the highest temperature and the lowest temperature of a battery cell in a power battery, calculating a difference value between the highest temperature of the battery cell and the lowest temperature of the battery cell to obtain a battery temperature difference; searching a target constraint condition in all preset constraint conditions, wherein the temperature constraint and the temperature difference constraint of the target constraint condition are satisfied by the highest temperature of the battery cell and the battery temperature difference at the same time; and calling the target fast charge map, wherein a preset constraint condition corresponding to the target fast charge map is consistent with the target constraint condition. According to the technical scheme provided by the invention, the matching degree of the fast charging map at different temperatures in the charging process is improved.

Description

technical field [0001] The invention relates to the field of new energy battery charging, in particular to a fast charging map switching method, device and electronic equipment. Background technique [0002] With the country's support for the new energy industry and the development of battery technology, especially in the new energy vehicle industry, excellent acceleration performance, low vehicle cost and good driving experience have prompted more and more users to choose pure electric vehicles. At the same time, users also put forward higher requirements for the fast charging performance of power batteries. During the fast charging process of the power battery, the fast charging map is an indispensable reference standard. The value in the fast charge map is the conversion rate of the charging current under different state of charge and different temperature conditions. Traditional technology often chooses a single fast charge map as the charging standard, but when the ex...

AI Technical Summary

Problems solved by technology

Traditional technology often chooses a single fast charging map as the charging standard, but when the external temperature is constantly changing, it often causes problems such as charging too slowly due to the mismatch of the charging map, or problems such as fire caused by the out-of-control battery temperature.

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