Motor controller discharging control circuit
A motor controller and discharge control technology, which is applied in motors, power management, electric vehicles, etc., can solve the problems of high voltage leakage, long discharge time of motor controllers, etc., achieve low cost, avoid high voltage leakage risks, and facilitate large-scale Promoted app performance
Pending Publication Date: 2018-08-21
JING JIN ELECTRIC TECHNOLOGIES (BEIJING) CO LTD
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Problems solved by technology
[0003] The invention provides a motor controller discharge control circuit to solve the technical problems that the motor controller has a long discharge time and there is a danger of high voltage leakage
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[0035] The design concept of the present invention is as follows: in view of the long discharge time and the danger of high voltage leakage in the passive discharge circuit of the motor controller in the prior art, the embodiment of the present invention provides an active discharge control circuit, which is received by a discharge signal transmission circuit. The discharge signal output by the motor controller and the control switch circuit are turned on and then discharged through the discharge circuit, so as to avoid the risk of high-voltage leakage. In the event of an emergency, the capacitor can be discharged in a short time. The circuit is simple and the degree of intelligence is high. , to ensure the safety of the motor controller.
[0036] The discharge control circuit of the motor controller of this embodiment includes: a discharge signal transmission circuit, a switch circuit and a discharge circuit;
[0037] a switch circuit is respectively connected with the discha...
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The invention discloses a motor controller discharging control circuit. The motor controller discharging control circuit includes a discharging signal transmission circuit, a switch circuit and a discharging circuit; the switch circuit is connected with the discharging signal transmission circuit and the discharging circuit separately, the discharging circuit is further connected with a bus positive pole, the input end of the discharging signal transmission circuit is connected with a discharging signal output pin of a motor controller, the output end of the discharging signal transmission circuit is connected with a bus negative pole, and the discharging signal transmission circuit outputs control signals to the switch circuit according to received discharging signals; the switch circuitis connected with the bus positive pole, the bus negative poles and the output end of the discharging signal transmission circuit, and according to the received control signals, after the switch circuit is connected, discharging is conducted through the discharging circuit. By the adoption of the motor controller discharging control circuit, active rapid discharging can be achieved, the risk of high-voltage leakage is avoided, and the safety of the motor controller is ensured.
Description
technical field [0001] The invention relates to the technical field of electric vehicle motor controllers, in particular to a discharge control circuit of a motor controller. Background technique [0002] The motor controller mainly converts the high-voltage direct current of the power battery on the electric vehicle into three-phase alternating current through the three-phase inverter circuit to provide power for the motor, and then provide power for the operation of the vehicle. In today's motor controllers, the use of capacitive elements is indispensable, so the action process of the capacitor will also affect the overall performance of the circuit, especially for the use of larger capacitors, if only passive discharge is used, Limited by the internal space of the controller and the power limitation of the discharge resistor, the discharge time is long, and there is a danger of high voltage leakage. SUMMARY OF THE INVENTION [0003] The invention provides a discharge c...
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Patent Timeline
Login to View More IPC IPC(8): H02M1/32
CPCH02M1/32H02M1/322H02M1/08
Inventor 屈玉霞张浩王颖
Owner JING JIN ELECTRIC TECHNOLOGIES (BEIJING) CO LTD