Wireless charging system for hearing instruments
First Claim
1. A wirelessly chargeable hearing instrument, comprising:
- 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;
wherein the charging parameter value is a charging voltage and/or a charging current generated on account of the resonant receipt of power; and
wherein the charging parameter value includes a request to modify a transmission frequency until a maximum of the charging voltage or the charging current has been reached.
0 Assignments
0 Petitions
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.
-
Citations
2 Claims
-
1. A wirelessly chargeable hearing instrument, comprising:
-
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; wherein the charging parameter value is a charging voltage and/or a charging current generated on account of the resonant receipt of power; and wherein the charging parameter value includes a request to modify a transmission frequency until a maximum of the charging voltage or the charging current has been reached.
-
-
2. A charging system, comprising:
-
a charging device; and a 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 said charging device, wherein the charging parameter value is a charging voltage and/or a charging current generated on account of the resonant receipt of power, and wherein the charging parameter value includes a request to modify a transmission frequency until a maximum of the charging voltage or the charging current has been reached.
-
Specification