Dual-power supply system based on electric vehicle and control method of dual-power supply system

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Dual-power supply system based on electric vehicle and control method of dual-power supply system

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FENG YINGYING / XU JINZHU / WANG QING

The invention discloses a dual-power supply system based on electric vehicle and a control method of the dual-power supply system. According to the dual-power supply system, a first charging loop and a second charging loop are connected in parallel between a high-voltage direct current input end and a low-voltage load in the vehicle, and a communication and control module is connected between the first charging loop and the second charging loop; and the communication and control module detects the states of the first and second charging loops and cuts off the first and/or second charging loops to supply power to the low-voltage load in the vehicle according to the states. According to the system and the method, the two charging loops are adopted, the two charging loops operate independently and do not influence each other, so that the redundancy of the charging system is increased; and low-voltage loads in the vehicle are graded, power is supplied to an important primary load or all loads according to the electric quantity of a lithium battery, and therefore, the system safety of the electric vehicle is improved.

本发明公开了基于电动汽车的双供电系统及其控制方法，其中双供电系统包括在高压直流输入端与车内低压负载之间并联第一充电回路和第二充电回路，在第一、第二充电回路之间连接通讯和控制模块；所述通讯和控制模块检测第一和第二充电回路状态，根据状态切断第一和/或第二充电回路向车内低压负载供电；本发明采用两条充电回路，两条充电回路独立运行，互不影响，增加了充电系统的冗余度，对车内低压负载进行分级，根据锂电池电量决定对重要的一级负载、或所有负载供电，从而进一步提高电动汽车的系统安全性。

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Title :

Dual-power supply system based on electric vehicle and control method of dual-power supply system

Additional title:

基于电动汽车的双供电系统及其控制方法

Contributors:

FENG YINGYING (author) / XU JINZHU (author) / WANG QING (author)

Publication date :

2022-02-08

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen