Abstract: A method for pulse heating a power battery of an electric vehicle and an electric vehicle. A powertrain includes a first power circuit and a second power circuit. The method is used to control the second power circuit or a motor power circuit to generate a pulse alternating current on a direct current bus, and the pulse alternating current is used to heat the power battery. A phase value of a pulse alternating current output by at least one of the first power circuit and the second power circuit is adjusted, to reduce a phase difference between a pulse alternating current generated by the first power circuit and a pulse alternating current generated by the second power circuit, thereby improving heating efficiency of the power battery.

Abstract: This application provides a method for pulse-heating a power battery of an electric vehicle, and an electric vehicle. The electric vehicle includes a plurality of motors and a plurality of three-phase bridge arms. Bridge arm midpoints of each three-phase bridge arm are configured to connect to a three-phase winding of one motor. Each three-phase bridge arm is configured to connect to the power battery through a direct current bus. The control method includes: controlling each three-phase bridge arm to be configured to generate a pulse current on the direct current bus; and adjusting a switching frequency of a switching transistor of at least one of the plurality of three-phase bridge arms to reduce a phase difference between pulse currents generated by a plurality of inverter circuits.

Abstract: A motor controller for pulse heating of a power battery. The motor controller includes an inverter circuit, the inverter circuit includes three switching transistor bridge arms, two ends of each switching transistor bridge arm are respectively configured to connect to positive and negative electrodes of the power battery through a direct current bus, and bridge arm midpoints of the three switching transistor bridge arms are separately configured to connect to a three-phase winding of a motor. The bridge arm midpoints of the three switching transistor bridge arms are configured to output a three-phase current, the three-phase current is used to generate a pulse alternating current on the direct current bus, and the pulse alternating current is used to heat the power battery. A current of each phase of the three-phase current is a unipolar triangular wave, and a sum of the three-phase current is zero.

Abstract: A method for pulse heating a power battery of an electric vehicle and an electric vehicle. A powertrain includes a first power circuit and a second power circuit. The method is used to control the second power circuit or a motor power circuit to generate a pulse alternating current on a direct current bus, and the pulse alternating current is used to heat the power battery. A phase value of a pulse alternating current output by at least one of the first power circuit and the second power circuit is adjusted, to reduce a phase difference between a pulse alternating current generated by the first power circuit and a pulse alternating current generated by the second power circuit, thereby improving heating efficiency of the power battery.

Abstract: The invention relates to the field of displaying. The embodiments of the invention provide an electronic glasses apparatus, a control method thereof and a display system. In the case that a user is watching images displayed on a display apparatus through the electronic glasses apparatus, he/she would get a more excited and realistic experience when a dazzling image such as the Sun or explosion appears.

Abstract: The invention relates to the field of displaying. The embodiments of the invention provide an electronic glasses apparatus, a control method thereof and a display system. In the case that a user is watching images displayed on a display apparatus through the electronic glasses apparatus, he/she would get a more excited and realistic experience when a dazzling image such as the Sun or explosion appears.

Abstract: The present invention discloses a backlight module and a 3D display device. The backlight module comprises a backboard, and LED support frames positioned beneath the backboard for supporting LED lamps. A hollow structure is formed at a position on the backboard around corresponding LED lamp. The backlight module further comprises light condensing hoods corresponding to the LED lamps. The light condensing hood can passing through the hollow structure to stretch out or withdraw back. By condensing light of the LED lamp via the light condensing hood, a user can feel the contrast between strong light and weak light in a 3D display picture, so that the sense of reality of a 3D display device is enhanced; moreover, when all the light condensing hoods are stretched out from the backlight module, the 3D display device may become a searchlight, the practicability of the 3D display device is further enhanced.