A charging method for electric vehicle using multi battery series mode

TL;DR

This paper proposes a multi-battery series charging method for electric vehicles that enhances charging efficiency and safety by adjusting current at specific voltage thresholds during the process.

Contribution

It introduces a novel multi-battery series charging approach with threshold-based current reduction to improve efficiency and security.

Findings

Achieves high charging efficiency.

Ensures secure charging process.

Effective voltage threshold management.

Abstract

A charging method for electric vehicle using multi battery series mode which consisted of the following steps was introduced: the battery series is firstly charged at a constant power with a charging current of I1. When the terminal voltage over the battery series has reached the 1st threshold voltage, the charging current will reduce to I2 and the power remains constant. When the terminal voltage over the battery series has reached the 2nd threshold voltage, the charging current will reduce to I3 and the power remains constant (the 2nd threshold voltage is larger than 1st threshold voltage). When the terminal voltage over the battery series has reached the 3rd threshold voltage, which is the rated voltage of the battery series, the charging process is completed (3rd threshold voltage is larger than 2nd threshold voltage). Contents in this paper provide a charging method for electric vehicles using multi battery series mode with high charging efficiency and security level.