Battery charging control method and device, medium and battery management system

Abstract

The invention relates to a battery charging control method and device, a medium and a battery management system. The method comprises the following steps: performing pulse charging on a battery by using appointed pulse current and appointed charging duration, determining a first environment temperature, a first voltage and a first residual electric quantity of the battery in a pulse charging period, determining a first resistor of the battery corresponding to the appointed pulse current, the first environment temperature and the first residual electric quantity, and performing pulse charging on the battery according to a pre-stored first corresponding relationship; determining a battery health state corresponding to the specified pulse current, the first environment temperature, the firstvoltage, the first residual electric quantity and the first resistor as a target health state, and determining a target corresponding relation between charging current and charging duration capable ofmeeting the charging requirement according to the target health state, the first corresponding relation and the charging requirement of the battery; and carrying out charging control on the battery according to the target corresponding relation.

Description

technical field [0001] The present disclosure relates to the field of battery control, and in particular, to a battery charging control method, device, medium, and battery management system. Background technique [0002] In recent years, as mobile vehicles such as new energy vehicles and electric vehicles, and portable electronic devices such as smartphones have entered people's daily lives on a large scale, users have higher and higher requirements for the charging experience of various electrical equipment. Whether it is a terminal or an OEM, the fast charging experience is regarded as the basic indicator of product performance. At present, the main consideration for the formulation of the fast charging strategy for lithium-ion batteries is the lithium deposition in the negative electrode. However, the fast charging strategy obtained in this way may have the problem of a sharp rise in battery temperature during charging, which may bring safety hazards to the fast charging ...

AI Technical Summary

Problems solved by technology

At present, the main consideration for the formulation of the fast charging strategy for lithium-ion batteries is the lithium deposition in the negative electrode. However, the fast charging strategy obtained in this way may have the problem of a sharp rise in battery temperature during charging, which may bring safety hazards to the fast charging of vehicles.

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