Recharge algorithm for accurate heat control estimation in presence of ferrite and electronics
US11896838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2020 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Feb 27, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling charging a power source of an implantable medical device (IMD) in a patient including determining a power being delivered to a primary coil of an external charging device for recharging, determining an estimated power delivered to the IMD power source an estimated heat generated by the primary coil based on a resistance of the primary coil determined as function of at least one of a recharge frequency, a temperature of the primary coil, and a current supplied to the primary coil, calculating an estimated heat generated by the IMD by subtracting the estimated heat generated by the primary coil and the estimated power delivered stored by the rechargeable power source from the power being delivered to a primary coil; and controlling based on the heat generated by the IMD, the power being delivered by the primary coil of the external charging device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.