Estimation method for battery capacity
US10578675B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0049
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a method for estimating a battery capacity of an electronic device. When a current or an average current of the battery is zero, a reference capacity is inquired from a look-up table based on a voltage of the battery. When a previously remaining capacity is greater than a reference capacity, a deduction process of a self-consumable capacity is performed one or more times for a previously recorded remaining capacity to obtain a new recorded remaining capacity smaller than the reference capacity. When the current of the battery is less than zero, a deduction process of a count capacity of discharging is performed one or more times for the previously recorded remaining capacity until a power of the battery is exhausted to obtain a first offset capacity. The first offset capacity is deducted from a previously recorded full charge capacity to estimate a new full charge capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.