Apparatus for estimating voltage of hybrid secondary battery and method thereof
US10073146B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2014 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and a method for estimating voltage of a hybrid secondary battery are provided, in which the hybrid secondary battery includes a first secondary battery and a second secondary battery having different electrochemical characteristics from each other and being connected in parallel with each other. The apparatus includes a sensor unit which measures an operating current of the hybrid secondary battery, and a control unit which estimates the voltage of the hybrid secondary battery using the operating current, and a voltage equation derived from a circuit model including a first circuit unit which simulates a voltage variation of the first secondary battery by a first open-circuit voltage element and optionally, a first impedance element, and a second circuit unit which is connected in parallel with the first circuit unit and simulates a voltage variation of the second secondary battery by a second open-circuit voltage element and optionally, a second impedance element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.