Noncontact charging device, charger, cordless electric equipment

Details Noncontact charging device, charger, cordless electric equipment Noncontact charging device, charger, cordless electric equipment

1997-07-03

1999-07-27

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

Charger inductively coupled to cell or battery

H01M 1046

Patent

active

059295988

ABSTRACT:
Capacitors are connected in parallel to a primary side induction coil in a charger 1 and a secondary side induction coil in a cordless equipment (handset unit) respectively, and LC parallel resonance circuits are formed in the charger and the cordless equipment respectively with this parallel connection. Each of the primary side induction coil and secondary side induction coil is formed with a sheet coil, and the sheet coils are arranged and fixed in the charger and the cordless equipment respectively so that the sheet coils face to each other with a prespecified gap in the charging state where the cordless equipment has been set in the charger.

REFERENCES:
patent: 4031449 (1977-06-01), Trombly
patent: 4202031 (1980-05-01), Hesler et al.
patent: 5157319 (1992-10-01), Klontz et al.
patent: 5327065 (1994-07-01), Bruni et al.
patent: 5490053 (1996-02-01), Tkacenko et al.
patent: 5550452 (1996-08-01), Shirai et al.
patent: 5600225 (1997-02-01), Goto

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