Non-contact charger
First Claim
1. A non-contact charger wherein a battery-driven electronic device containing a secondary battery is provided in a power supply section and electrical power is supplied thereto by non-contact, the non-contact charger comprising:
- a primary side coil and a secondary side coil, the primary side coil supplying power to the secondary side coil by electromagnetic induction, the primary side and secondary side coils being provided to face each other with a case therebetween;
the primary side coil comprising a U-shaped magnetic core having a leg at each end thereof, and windings which are wound around the magnetic legs; and
the secondary side coil comprising a U-shaped magnetic core having a leg at each end thereof, and a winding which is wound around a common magnetic core of the U-shaped magnetic core;
the cross-sectional area of the magnetic legs of the primary side coil being greater than the cross-sectional area of the magnetic legs of the secondary side coil.
3 Assignments
0 Petitions
Accused Products
Abstract
A non-contact charger wherein a battery-driven electronic device containing a secondary battery is provided in a power supply section and electrical power is supplied thereto by non-contact, the non-contact charger including: a primary side coil and a secondary side coil, the primary side coil supplying power to the secondary side coil by electromagnetic induction, the primary side and secondary side coils being provided to face each other with a case therebetween; the primary side coil containing a U-shaped magnetic core having a leg at each end thereof, and windings which are wound around the magnetic legs; and the secondary side coil containing a U-shaped magnetic core having a leg at each end thereof, and a winding which is wound around a common magnetic core of the U-shaped magnetic core; the cross-sectional area of the magnetic legs of the primary side coil being greater than the cross-sectional area of the magnetic legs of the secondary side coil.
60 Citations
4 Claims
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1. A non-contact charger wherein a battery-driven electronic device containing a secondary battery is provided in a power supply section and electrical power is supplied thereto by non-contact, the non-contact charger comprising:
a primary side coil and a secondary side coil, the primary side coil supplying power to the secondary side coil by electromagnetic induction, the primary side and secondary side coils being provided to face each other with a case therebetween;
the primary side coil comprising a U-shaped magnetic core having a leg at each end thereof, and windings which are wound around the magnetic legs; and
the secondary side coil comprising a U-shaped magnetic core having a leg at each end thereof, and a winding which is wound around a common magnetic core of the U-shaped magnetic core;
the cross-sectional area of the magnetic legs of the primary side coil being greater than the cross-sectional area of the magnetic legs of the secondary side coil.- View Dependent Claims (2, 3, 4)
Specification