US 12,191,689 B2Granted

Portable device, charging system, and power source circuit substrate

AssigneeK/S Himpp

InventorsTakezo Hatanaka, Hisashi Tsuda

Life of this patent

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Abstract

A portable device including a secondary battery, a plurality of driving components driven by charged power of the secondary battery, a charging unit configured to charge the secondary battery by an input of outside power supplied from outside of the portable device, a plurality of transformation units each configured to output the charged power of the secondary battery at a driving voltage of a corresponding one of the plurality of driving components, a detection unit configured to detect the input of the outside power to the charging unit, and a switching controller configured to switch a state of one of the plurality of transformation units from an operation state to a stopped state responsive to detecting the input of the outside power to the charging unit causing only the corresponding one of the plurality of driving components to stop operation during charging of the secondary battery.

Claims5

Dependent claims

A charging system for a hearing aid comprising:

a secondary battery disposed in said hearing aid;
a power supplying resonance coil that generates a power supplying resonance coil magnetic field in a magnetic field space;
a power receiving module disposed in said hearing aid having a power receiving resonance coil that generates a power receiving resonance coil magnetic field in said magnetic field space, said power supplying resonance coil placed at a distance from said power receiving resonance coil so that said power supplying resonance coil magnetic field interacts with said power receiving resonance coil magnetic field in said magnetic field space such that said magnetic field space has a magnetic field strength, at and around an inner side of said power receiving resonance coil, that is lower than a magnetic field strength surrounding said magnetic field space;
a control substrate disposed in said magnetic field space in said hearing aid to reduce the size of said hearing aid, said control substrate comprising:
a charging unit configured to charge said secondary battery from power supplied by said power receiving resonance coil;
a plurality of transformation units that connect power from said secondary battery to a driving voltage for driving components of said hearing aid;
a detection unit configured to detect power received by said power receiving resonance coil;
and
a switching controller that switches at least one of said plurality of transformation units off upon detection of power received from said power receiving resonance coil.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/347,277Filed 14 Jun 2021 · continuation
Priority: JP 2013-1831304 Sep 2013
Published: US 2021/0313837 A17 Oct 2021
Granted: 7 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02J 7/70
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: characterised by the mechanical construction
H02J 7/04
For charging batteries from AC mains by converters: regulation of charging current or voltage
H02J 7/731
Characterised by the mechanical construction: specially adapted for holding portable devices containing batteries
H02J 50/12
Using inductive coupling: of the resonant type

Family

PCT/JP2014/064335Parent of this continuation · filed 29 May 2014
Application16/169,342Parent of this continuation · filed 24 Oct 2018
US 10,218,223 B2Parent of this continuation · filed 26 Feb 2019
US 2021/0313837 A1Pre-grant publication · published 7 Oct 2021
US 11,056,920 B2Parent of this continuation
Application14/422,233Parent of this continuation
US 2016/0006292 A1Published application
US 2019/0058359 A1Published application
US 12,191,689 B2This patent

From the US filing history. Foreign family members aren’t listed.