Systems and methods used to reserve a constant battery capacity
US7450991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2005 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Dec 21, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3787
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Techniques are disclosed which provide a substantially constant battery reserve capacity with respect to therapeutic medical devices. Accordingly, a battery control system may be operable to maintain a substantially constant reserve capacity throughout the life of the battery. The battery reserve capacity activation threshold may be set and continuously or periodically updated so that a battery's remaining capacity equals the predetermined reserve capacity when the measured parameter reaches the activation threshold, thereby allowing a maximum amount of a battery's total capacity to be employed for therapeutic use and reserve only that portion of that capacity determined to provide for a desired level and/or period of device function after reaching the reserve threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.