2results about How to "Avoid burning phenomenon" patented technology

This invention discloses a stall protection method, device, equipment, and storage medium for an electric drive system. The scheme may include: acquiring the initial temperature of the IGBT module in the motor controller and the starting torque of the motor when the motor enters the starting state; defining a number of time nodes sequentially, with the moment when the motor enters the starting state as the zero point; for the number of time nodes, provided that the empirical temperature rise value of the IGBT module is less than the temperature rise margin, if it is detected that there is no time node in the number of time nodes where the actual speed of the motor exceeds the speed threshold of the motor in the running state, then if the torque of the motor is not zero, the starting state of the motor is maintained; if the torque of the motor becomes zero, the shutdown mode is entered; when it is detected that the empirical temperature rise value of the IGBT module corresponding to a second time node in the number of time nodes is greater than or equal to the temperature rise margin for the first time, the stall condition of the motor is reported, and the motor is shut down.

The application discloses a packaging structure of an electronic fuse, a circuit structure and a packaging method thereof. The packaging structure comprises a packaging frame with a frame base and a plurality of pins, a MOS chip above the frame base, a metal connecting piece above the MOS chip and a controller chip above the metal connecting piece. The MOS chip comprises a main MOS tube and a branch MOS tube. The metal connecting piece completely covers the source area of the main MOS tube and is adapted to connect the source area of the main MOS tube with the pins of the packaging frame. The source area of the branch MOS tube is directly connected with the pins of the packaging frame. The controller chip is adapted to only open the main MOS tube during the soft start of the electronic fuse and to open the branch MOS tube after the soft start is completed or after the main MOS tube enters a linear region. The above scheme can reduce the burning of the MOS tube.