Power interface circuit of vehicle-mounted terminal of electric vehicle

• Main Authors: FENG ZHILIANG, SHAO QIMING, ZHENG MINGJI, XI YONGHUI, FU SHIRU
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The embodiment of the utility model discloses a power interface circuit of a vehicle-mounted terminal of an electric vehicle. The circuit comprises a vehicle-mounted power supply connector, a first energy accumulation circuit, a first discharging circuit, a first switching circuit and an over-discharging protection circuit of a built-in battery of the vehicle-mounted terminal. The input end of the vehicle-mounted power supply connector is connected with a vehicle-mounted power supply of the electric vehicle, and the output end of the vehicle-mounted power supply connector is connected with a public input end composed of the first discharging circuit, the first energy accumulation circuit and the first switching circuit. The other input end of the first switching circuit is connected with the output end of the over-discharging protection circuit, and the output end of the first switching circuit is connected with the power input end of a load circuit of the vehicle-mounted terminal. The input end of the over-discharging protection circuit is connected with the built-in battery of the vehicle-mounted terminal. By the adoption of the power interface circuit, various faults caused by a power interface circuit in the prior art can be eliminated.