Patent ID: 9438066
Filing Date: 2016-09-06
CPC Classification: H01F,H01M,H02J,Y02E

Claim Text:
1. A contactless rechargeable secondary battery comprising: a secondary battery; a power receiver circuit provided with a power receiver coil and a resonance capacitor and adapted to receive AC power of resonance frequency via magnetic field resonance, the resonance capacitor being connected in parallel with the power receiver coil; a rectifier circuit adapted to rectify the AC power received by the power receiver circuit; a current limiter circuit adapted to limit a charging current flowing from the rectifier circuit to the secondary battery; and an outer casing configured to be cylindrical in shape, adapted to house the secondary battery, and provided with a positive terminal and a negative terminal, the positive terminal being connected with a positive pole of the secondary battery and the negative terminal being connected with a negative pole of the secondary battery, wherein the power receiver coil is shaped like a sheet, that extends from the negative pole to the positive pole, by being made up of an electric wire wound along a plane and is installed along an inner surface of the outer casing.