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US 10,320,211 B2Granted
Hearing aid and hearing-aid charging system
AssigneeNitto Denko Corporation
InventorsTakezo Hatanaka, Hisashi Tsuda
Life of this patent
Estimating the term…
Abstract
In regard to a hearing aid and a hearing aid charging system, frequent replacement of a battery is avoided even if power consumption is large, and the structure is simplified and waterproofness is improved. A Hearing aid includes a secondary battery having a nominal voltage higher than a nominal voltage of an air battery, a driving component driven by power supplied from the secondary battery, and a transformation unit configured to output the charging power of the secondary battery at a voltage suitable for driving the driving component.
Claims9
A hearing aid comprising:
- a secondary battery having a nominal voltage higher than a nominal voltage of an air battery;
- at least one driving component driven by power supplied from the secondary battery;
- a charging unit configured to supply DC power at a predetermined voltage to the secondary battery;
- a transformation unit configured to output a charging power of the secondary battery to the at least one driving component, at a voltage suitable for driving the at least one driving component;
- a power-receiving module configured to receive resonance-type power from the outside in a contactless manner;
- and
- a rectifier configured to output DC power to the charging unit by rectifying the resonance-type power supplied to the power-receiving module, at least one of the rectifier, the charging unit, the transformation unit, and the secondary battery being provided in a magnetic field space that is formed by a resonance phenomenon in the power-receiving module to have a lowest magnetic field strength than a magnetic field strength in any other part of the hearing aid.
4 more elements
Dependencies are inferred from the claim text.