Portable charging unit with accelerated charging for hearing assistance devices
US10666067B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2018 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jun 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/33
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
First and second hearing assistance devices each comprise a rechargeable power source and power management circuitry configured to control charging of the power sources. A portable charging unit comprises an interface configured to receive a connector of a power cable or a power and data cable, a rechargeable power source coupled to the interface, first and second charge ports configured to receive the first and second hearing assistance devices, and charging circuitry coupled to the first and second charge ports and to the rechargeable power source of the charging unit. The power management circuitry and the charging circuitry cooperate to partially charge the power sources of the hearing assistance devices at an accelerated charge rate above 1.0C when a state of charge (SoC) of the power sources is within a predetermined SoC range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.