The invention discloses a constant-current charging and dual-power-supply uninterrupted switching circuit for a new energy vehicle. The constant-current charging and dual-power-supply uninterrupted switching circuit comprises a constant-current charging control circuit, a voltage acquisition circuit, a turn-off circuit S1, a turn-off circuit S2 and a comparator circuit, the two input ends of the constant-current charging control circuit are respectively connected with the DCDC converter and one input end of the comparator circuit, and the output end of the constant-current charging control circuit is connected with the storage battery; one end of the voltage acquisition circuit is connected with the storage battery, and the other end of the voltage acquisition circuit is connected with the DCDC converter; the other input end of the comparator circuit is connected with the voltage sampling circuit, the output end of the comparator circuit is connected with the input end of the turn-off circuit S1 and the input end of the turn-off circuit S2, the input end of the turn-off circuit S1 is further connected with the input end of the turn-off circuit S2, the output end of the turn-off circuit S1 is connected with the storage battery, and the output end of the turn-off circuit S2 is connected with the DCDC converter. And the other output end of the turn-off circuit S2 is connected with the other output end of the turn-off circuit S1. According to the invention, the functions of constant-current charging and uninterrupted switching of the dual power supplies are realized through a small number of electronic devices, and the functional safety level of the new energy vehicle is improved.
本发明公开一种新能源车辆用恒流充电及双电源不间断切换电路,包括恒流充电控制电路、电压采集电路、关断电路S1、关断电路S2和比较器电路;恒流充电控制电路的两输入端分别与DCDC转换器、比较器电路一输入端连接,恒流充电控制电路输出端与蓄电池连接;电压采集电路一端与蓄电池连接,电压采集电路另一端与DCDC转换器连接;比较器电路的另一输入端与电压采样电路连接,比较器电路的输出端分别与关断电路S1、关断电路S2的输入端连接,关断电路S1的输入端还与关断电路S2的输入端连接,关断电路S1输出端与蓄电池连接,关断电路S2输出端与DCDC转换器连接,关断电路S2另一输出端与关断电路S1另一输出端连接。本发明通过少量的电子器件实现了恒流充电及双电源不间断切换的功能,提升了新能源车辆的功能安全等级。
Constant current charging and dual power supply uninterrupted switching circuit for new energy vehicle
一种新能源车辆用恒流充电及双电源不间断切换电路
2025-01-24
Patent
Electronic Resource
Chinese
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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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