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Method for Inductive Charging of a Headset Battery Using the Speaker Coil

IP.com Disclosure Number: IPCOM000011872D
Publication Date: 2003-Mar-20
Document File: 2 page(s) / 69K

Publishing Venue

The IP.com Prior Art Database

Related Documents

5,959,433: PATENT [+2]

Abstract

This concept would allow device battery recharging without the need to complete any direct electrical connection between the device (headset or handset) and its power adapter or base station.

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Title: Method for Inductive Charging of a Headset Battery Using the Speaker Coil

This concept relates to power transmission; specifically inductive power coupling with no exposed electrical contacts.

Description of the problem this invention solves:

Any rechargeable battery powered device typically has to allow a method by which to connect and deliver the power to a discharged battery.  This often requires specific mechanical connectors or interfaces that will complete the electrical circuit to allow power transmission to charge the battery.  These connectors are often complex or unsightly due to the need to design a contact method that is durable and protects a user from exposure to any electrical contacts or interface during device usage and/or periods of device battery charging.  This concept would allow device battery recharging without the need to complete any direct electrical connection between the device (headset or handset) and its power adapter or base station.      

Previous Solutions for the Problem

There are numerous prior solutions or solution attempts that address power connection for battery charging.  There are specific prior solutions which even utilize an inductive charging method as described here.  The uniqueness of this concept is to leverage the design of a headset speaker, which already contains a wound conductive coil, to transfer power to a battery charge circuit in the headset.

Description of the Invention               

It is possible to safely and easily tran...