An inductive charging circuit for an electric vehicle

Abstract

The invention discloses an inductive charging circuit for an electric vehicle, comprising a charging source and an automobile charging device, wherein the charging source and the automobile charging device are inductively coupled through a high-frequency coupler; The charging source comprises a power management module, a high-frequency inverter electrically connected with the output end of the power management module, and a charging cable unit electrically connected with the output end of the high-frequency inverter. The power management module is electrically connected with an input terminalof the power management module to a power grid; The automobile charging device comprises an AC / DC rectifying mode filter block and a charging indication module electrically connected with an output end of the AC / DC rectifying mode filter block. An output end of the charging indication module is electrically connected with a rechargeable battery of an automobile; The high-frequency coupler has a transmitting coil electrically connected with a charging cable unit and a receiving coil electrically connected with an AC / DC rectifying mode filter block. The induction charging circuit of the electricvehicle adopts a non-contact induction charging mode, reduces contact wear and prolongs the service life of the equipment.

Description

technical field [0001] The invention relates to a charging circuit for an electric vehicle, in particular to an inductive charging circuit for an electric vehicle, and belongs to the technical field of vehicle charging equipment. Background technique [0002] Due to the remarkable advantages of electric vehicles, electric vehicles have rapidly developed into a very important means of transportation; all major countries regard the promotion and development of electric vehicles as an important development strategy and an important means of energy saving and emission reduction; China's current All kinds of electric vehicles have reached tens of millions; most of the existing electric vehicles use batteries as energy storage devices. During the use of electric vehicles, due to human negligence or equipment failure, there will be occasions when they stop on the road due to exhaustion of power. However, the existing car charging methods are all contact charging, that is, the tradi...

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Problems solved by technology

[0002] Due to the significant advantages of electric vehicles, electric vehicles have rapidly developed into a very important means of transportation; all major countries regard the promotion and development of electric vehicles as an important development strategy and an important means of energy saving and emission reduction; China's current All kinds of electric vehicles have reached tens of millions; most of the existing electric vehicles use batteries as energy storage devices. During the use of electric vehicles, due to human negligence or equipment failure, there will be accidents when the electric vehicles are exhausted and stopped on the road. However, the existing car charging methods are all contact charging, that is, the traditional contactor is used for charging, and the user connects the charging source connector to the car; but such The charging method needs to expose the conductor to the outside, which has potential safety hazards; moreover, it will cause mechanical wear and tear due to multiple plugging operations, resulting in loose contact and inability to effectively transmit electric energy; therefore, in order to solve the above problems, the present invention proposes a method that can realize The inductive charging circuit used for wireless charging for electric vehicles does not use direct electrical contact between the charging source and the car receiving device, but uses a combination of separate high-frequency transformers (high-frequency coupler), through Inductive coupling, which transmits energy without contact, realizes the way of inductive coupling charging

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