The invention relates to the technical field of charging. The invention discloses a direct current charging gun circuit which comprises an alternating current input interface, a pre-stage protection filter circuit, a totem pole type PFC circuit, a CLLLC resonance circuit, a direct current output interface, a main control circuit, an auxiliary power supply circuit and an insulation detection circuit. The alternating current input interface, the pre-stage protection filter circuit, the totem-pole PFC circuit, the CLLLC resonant circuit and the direct current output interface are sequentially connected in series, and the control ends of the totem-pole PFC circuit and the CLLLC resonant circuit are respectively connected with the control output end of the main control circuit. The auxiliary power supply circuit is used for converting alternating current input by the alternating current input interface into low-voltage direct current to supply power to the direct current charging gun circuit, the output end of the insulation detection circuit is connected with the input end of the main control circuit, and the insulation detection circuit is used for detecting the insulation resistance of the positive and negative ends of the direct current output interface relative to the ground. The system has the advantages of small harmonic wave, high power factor, low loss, high working efficiency, high interference resistance, high safety, high reliability and the like.
本发明涉及充电技术领域。本发明公开了一种直流充电枪电路,包括交流输入接口、前级保护滤波电路、图腾柱式PFC电路、CLLLC谐振电路、直流输出接口、主控电路、辅助电源电路和绝缘检测电路,交流输入接口、前级保护滤波电路、图腾柱式PFC电路、CLLLC谐振电路和直流输出接口依次串联连接,图腾柱式PFC电路和CLLLC谐振电路的控制端分别接主控电路的控制输出端,辅助电源电路用于将由交流输入接口输入的交流电转换为低压直流电为该直流充电枪电路供电,绝缘检测电路的输出端接主控电路的输入端,绝缘检测电路用于检测直流输出接口的正负端相对于地的绝缘电阻大小。本发明具有谐波小,功率因数高,损耗低,工作效率高,抗干扰强,安全性和可靠性高等优点。
Direct current charging gun circuit
一种直流充电枪电路
2023-05-02
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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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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