Power-driven flyback switching system for new energy automobile and working method of power-driven flyback switching system

Abstract

The invention discloses a power-driven flyback switching system for a new energy automobile and a working method of the flyback switching system, and belongs to the field of power supply driving of new energy automobiles. The power-driven flyback switching system for the new energy automobile comprises a control unit, a power supply unit, a transformation topology unit, a rectification filtering unit, a sampling feedback unit, a protection unit and a switching unit. According to the invention, the transformation topology unit and the rectification filtering unit are matched with the switch unit to form a flyback switch system, so that common-mode noise and high-frequency noise can be effectively eliminated and suppressed, and meanwhile, the output voltage is stabilized; therefore, the electronic load can work normally, limitation on the working efficiency of the electronic equipment is reduced, and meanwhile, the sampling feedback unit and the protection unit are added to work cooperatively, so that the safety of the working load and the power supply battery pack in the automobile can be protected.

Description

technical field [0001] The invention discloses a flyback switch system for power drive of new energy vehicles and a working method thereof, belonging to the field of power drive of new energy vehicles. Background technique [0002] With the continuous development of new energy vehicle technology, people have higher and higher demands on the maneuverability, comfort and entertainment of new energy vehicles, and the rapid increase of electronic equipment on new energy vehicles has led to the need for controllers with stable power supplies on vehicles. The increase in electricity consumption has greatly increased, thus putting forward new requirements for the power system of new energy vehicles. The automotive power supply system supplies power to the electrical appliances of the vehicle, which includes not only the electronic control unit and controller, but also high-power electrical appliances such as lights and air conditioners. These different types of electrical applianc...

AI Technical Summary

Problems solved by technology

[0003] When the new energy vehicle power drive in the prior art is driving multiple loads, there is a certain common-mode noise interference between the switching devices of each load; when the working load is an electronic device sensitive to noise, the high-frequency noise caused by the switching device Noise will interfere with the normal operation of the load; in this way, to make the electronic load work normally, the load operation and power charging cannot be carried out at the same time, which greatly limits the working efficiency of electronic equipment

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