JPH11127503A - Battery charger for electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery charger for electric vehicle with which the battery of an electric automobile can be charged by only putting the vehicle into a garage and parking the vehicle at a prescribed position by utilizing electromagnetic induction, at charging of the battery. SOLUTION: A battery charger for electric vehicle is constituted of a cable used for obtaining AC power from a household power source, a sensor switch section which controls the supply of the AC power upon detecting that its own vehicle is parked at a prescribed position (does not supply the AC power to the charger, when the vehicle is not parked), a position correcting section which corrects the position of the vehicle to the prescribed position when the parking position of the vehicle is slightly deviated from the prescribed position, and a coil section which generates a magnetic force upon receiving the AC power. In vehicle parking, the battery charger receives the magnetic force generated from the coil section of a device installed to the parking lot, converts the AC power generated by the principle of electromagnetic induction into a DC power and supplies the DC power to the battery of the vehicle. As a result, the need for the conventional cable connection can be eliminated.

Description

Detailed Description of the Invention In recent years, due to environmental problems, practical development of electric vehicles and hybrid cars using an electric motor and an internal combustion engine in combination has been progressing. Electric vehicles have batteries and need to be charged. At present, it is considered that connecting a cable from a household power supply is the easiest way to charge the battery,
If electric vehicles are put to practical use and spread, it will be a troublesome task for ordinary users to connect cables. Therefore, this device was invented. The device is divided into a device fixed to a parking lot and a device mounted on a vehicle, and each is mounted so as to be vertically overlapped when parked. The structure of each is as follows.

A device that fixes AC power to the parking lot. A cable that supplies AC electricity from a household power supply, and controls the supply of electricity when the vehicle is parked at a predetermined position. (When the vehicle is not parked, power is supplied to the device. (Not supplied) Sensor switch unit, position correction unit that corrects the position of the device to the appropriate position for vehicle installation when the parking position is slightly shifted, coil unit that generates magnetic force by supplied power Is done.

Equipment to be mounted on vehicles. At the time of parking the vehicle, receiving the time generated from the coil of the device installed in the parking lot, the coil that generates electricity by the principle of electromagnetic induction, the rectifier that converts the obtained AC electricity to DC, the converted DC It consists of a cable that supplies power to the battery.

[Brief description of the drawings]

[Drawing] Basic principle diagram of the charging device for electric vehicles (when the vehicle is parked)

Claims (1)

[Claims] An electric vehicle that can be charged simply by entering an garage and parking at a predetermined position by utilizing electromagnetic induction when charging an electric vehicle. Conventional cable connection is not required.