Drive motor controller discharge support circuit, control method and motor controller

• Main Authors: QIN XIUJING, MA MENGYIN, LIU CHANG, GE XUEJIAN
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2020
• 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 invention relates to the technical field of electric vehicles, in particular to a driving motor controller discharge supporting circuit, a control method and a motor controller. The driving motorcontroller discharge supporting circuit comprises a support capacitor, a high-voltage power supply unit and a discharge unit; the high-voltage power supply unit comprises a first high-voltage power supply and a second high-voltage power supply; when a main contactor is disconnected, at least one of the first high-voltage power supply and the second high-voltage power supply outputs support voltageto the discharge unit; when the current voltage of the support capacitor is smaller than a first preset voltage, the first high-voltage power supply and the second high-voltage power supply stop outputting the support voltage to the discharge unit; and the discharge unit performs active discharge when the high-voltage power supply unit operates. According to the drive motor controller discharge support circuit, the corres