Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-03-22
1997-04-01
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
H02J 700, H01M 1044, H01M 1046
Patent
active
056170033
ABSTRACT:
Method and apparatus of charging a battery of an electric vehicle through inductive coupling between a primary inductive device having a core and a primary coil connected to a power source and a secondary inductive device having a core and a secondary coil connected to the battery are disclosed. The primary inductive device is provided on a movable arm of a ground charger unit and the secondary inductive device is mounted on the bottom of the vehicle adjacent its rear end. The power source supplies to the primary coil selectively a charging current and a check current. When the check current is supplied to the primary coil, an electromotive force is induced in the secondary coil which varies with a change of the relative position between the primary and secondary inductive devices. The variation in the induced electromotive force causes a change of the check current flowing in the primary coil. The position where the primary inductive device should be placed with respect to the secondary inductive device just before coupling thereof is determined on the basis of the change of the check current which is monitored while moving the primary inductive device relative to the secondary inductive device.
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Minoshima Norimoto
Odachi Yasuharu
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Law Patrick B.
Wong Peter S.
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