NOVEL BRAKE RESISTOR CONTROL APPARATUS FOR PURE ELECTRIC HEAVY-DUTY VEHICLE

摘要

Disclosed is a novel brake resistor control apparatus for a pure electric heavy-duty vehicle, wherein a brake resistor and a brake resistor freewheel diode are mutually connected in parallel, and then are successively mutually connected to a brake resistor branch IGBT and a fuse in series, and form a first control circuit, wherein the first control circuit is connected to a cathode circuit of a battery pack; a feedback branch IGBT and a discharge loop diode are mutually connected in parallel, and form a second control circuit, wherein the second control circuit is connected to an anode circuit of an electric motor controller; a control module is connected to a vehicle controller, and the brake resistor branch IGBT and the feedback branch IGBT are correspondingly connected to the control module; and anode and cathode circuits of the battery pack are respectively correspondingly connected to anode and cathode circuits of the electric motor controller, and the vehicle controller is connected to the electric motor controller. According to the present invention, mutual cooperation and switching between energy feedback braking control and energy consumption braking control, and mechanical braking are realized, ensuring that a vehicle can be effectively braked in any state, while realizing maximum energy recovery, and guaranteeing traveling safety of the vehicle.