Wireless charging system for hearing instruments
First Claim
1. A charging device for wireless charging of a hearing instrument, the charging device comprising:
- a transmit antenna configuration;
a transmit amplifier for actuating said transmit antenna configuration;
a housing defining a charging space disposed within the charging device;
said transmit antenna configuration having at least two feeding points, said transmit antenna configuration and said feeding points disposed spatially in relation to said charging space such that a circularly polarized electromagnetic field can be generated in said charging space; and
said transmit amplifier connected to individually control each one of said at least two feeding points in order to generate the circularly polarized electromagnetic field.
1 Assignment
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Accused Products
Abstract
A facility is provided for the wireless resonant charging of rechargeable hearing instruments. The hearing instrument is freely positionable in a charging device for charging purposes. The charging device for the wireless charging has a transmit antenna arrangement, a transmit amplifier for actuating the transmit antenna arrangement and a charging space. The transmit antenna arrangement has two feeding points, which are spatially arranged in relation to the charging space such that a circularly polarized electromagnetic field can thus be generated in the charging space. The transmit amplifier actuates the antennas accordingly to generate a circularly polarized electromagnetic field in the charging space. In the process a coil arrangement generates a circularly polarized HF field. A good resonant coupling, even with a tilted hearing instrument, is possible, in other words with an undetermined and unpredictable orientation and position of the receive coil of the hearing instrument.
18 Citations
9 Claims
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1. A charging device for wireless charging of a hearing instrument, the charging device comprising:
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a transmit antenna configuration; a transmit amplifier for actuating said transmit antenna configuration; a housing defining a charging space disposed within the charging device; said transmit antenna configuration having at least two feeding points, said transmit antenna configuration and said feeding points disposed spatially in relation to said charging space such that a circularly polarized electromagnetic field can be generated in said charging space; and said transmit amplifier connected to individually control each one of said at least two feeding points in order to generate the circularly polarized electromagnetic field. - View Dependent Claims (2, 3, 4, 8, 9)
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5. A charging system, comprising:
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a charging device for wireless charging of a hearing instrument, the charging device including;
a transmit antenna configuration;
a transmit amplifier for actuating said transmit antenna configuration; and
a housing defining a charging space disposed within the charging device;
said transmit antenna configuration having at least two feeding points, said transmit antenna configuration and said feeding points disposed spatially in relation to said charging space such that a circularly polarized electromagnetic field can be generated in said charging space; and
said transmit amplifier connected to individually control each one of said at least two feeding points in order to generate the circularly polarized electromagnetic field; anda wirelessly chargeable hearing instrument including;
a rechargeable battery;
a receive antenna configuration embodied for a resonant receipt of power;
a charging facility embodied to transform a signal received by said receive antenna configuration into a charging signal, to charge said rechargeable battery by supplying the charging signal and to control a charging process, said charging facility having a detection facility embodied to detect a charging parameter value; and
a transmit facility sending the charging parameter value in dependence on the resonant receipt of power to a charging device;said charging device further having a regulation facility for receiving the charging parameter value from said transmit facility, and said transmit amplifier actuating said transmit antenna configuration in dependence on the charging parameter value. - View Dependent Claims (6, 7)
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Specification