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US 7,705,558 B2Granted
In situ rechargeable battery and charging stand
AssigneeDeNovo Research, LLC
InventorMartin S. Silverman
Life of this patent
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AssigneeDeNovo Research, LLC
InventorMartin S. Silverman
Estimating the term…
A secondary button cell battery that is particularly suited for use in hearing aid appliances, and an associated charging station. Recharging is accomplished without direct conductive connection between the source of the energy and either the battery or its appliance. Radio frequency energy is harvested in an enclosed chamber in a charging station and applied to the recharging of the button cell. Such energy is harvested by the use of one or more energy harvesting diodes connected in parallel with the battery. Multiple diodes connected in parallel or serial may be used to adjust charging current or voltage or both. Charge control is provided by directly or indirectly detecting the level of charge on the cell. Where the associated appliance is a hearing aid, the charge level detection may be accomplished acoustically by determining the characteristics of the sound emitted by the hearing aid, and charging is accomplished with the cell within the hearing aid appliance.
A charging station for a secondary battery which said secondary battery has a radio frequency energy harvesting diode chargingly associated therewith, said charging station comprising:
A charging station for a secondary battery in the form of a button cell comprising:
Dependencies are inferred from the claim text.