Quick charging circuit system using direct-current charging pile for low-voltage battery pack

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Quick charging circuit system using direct-current charging pile for low-voltage battery pack

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ZHANG SHUO / SONG TIANFANG / FENG XINGZHU

The invention provides a quick charging circuit system using a direct-current charging pile for a low-voltage battery pack, and the system comprises a to-be-charged battery pack BAT1, the to-be-charged battery pack BAT1 is correspondingly provided with an auxiliary quick charging circuit, the auxiliary quick charging circuit is connected with the to-be-charged battery pack BAT1 in parallel, the auxiliary quick charging circuit comprises a branch 1, a branch 2, and a branch 3 ad the branch 1 comprises a contactor K1. The contactor K1 is arranged between the first connecting end and the direct-current charging pile, the branch 2 comprises a contactor K4, the K4 is arranged between the fourth connecting end and the direct-current charging pile, the branch 3 comprises a contactor K6, one end of the contactor K6 is connected with the second connecting end, and the other end of the contactor K6 is connected with the third connecting end. According to the method, the normal charging and discharging mode of the new energy automobile battery can be met, quick charging can be conducted under multiple voltages, the circuit is simple, a parallel circuit can be continuously added through the same method, and therefore the system is suitable for the direct-current charging pile with the higher voltage level.

本发明提供了一种低压电池组利用直流充电桩的快速充电电路系统，包括待充电池组BAT1，所述待充电池组BAT1对应设有辅助快充电路，所述辅助快充电路与待充电池组BAT1并联，所述辅助快充电路包括支路一、支路二和支路三，所述支路一包括接触器K1，所述接触器K1设置在连接端一和直流充电桩之间，所述支路二包括接触器K4，所述K4设置在连接端四和直流充电桩之间，所述支路三包括接触器K6，所述接触器K6一端连接连接端二，另一端连接连接端三。本发明可以满足新能源汽车电池正常充放电方式，又能在多倍电压下进行快充，且此方法电路简洁，可用同样方法继续增加并联电路，从而适应更大电压等级的直流充电桩。

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Title :

Quick charging circuit system using direct-current charging pile for low-voltage battery pack

Additional title:

一种低压电池组利用直流充电桩的快速充电电路系统

Contributors:

ZHANG SHUO (author) / SONG TIANFANG (author) / FENG XINGZHU (author)

Publication date :

2021-02-19

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