Method for estimating operation voltage of solar battery cell in solar battery module and solar battery cell operation voltage estimation system
US11936338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2019 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Sep 27, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for estimating an operation voltage of a cell includes setting a state in which one cell is shielded from light; detecting a small change of an output current of a module in that state; irradiating another cell with modulated and detecting the small change of the output current light in that state; detecting an operation voltage of the module in that state; generating a first calibration line by connecting a first point and a second point which are plotted on coordinate axes representing a voltage and a relative ratio of a resistor; irradiating a cell the operation voltage of which is to be estimated with the modulated light and detecting the small change of the output current of the module in a state in which none of the cells is shielded from light; detecting the operation voltage of the module in that state; generating a second calibration line by connecting a third point and the second point which are plotted on the coordinate axes; calculating a value of the relative ratio of the resistor of the cell the operation voltage of which is to be estimated; and calculating a value of a voltage of a fourth point, which becomes the value of the relative ratio of the resistor a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.