Two rail design and safety circuit for electrochromic windows
US10768503B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jul 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dual rail driver for an electrochromic device is provided. The dual rail driver includes a power supply having a first power supply rail and a second power supply rail and an H bridge connected to the first power supply rail and the second power supply rail and configurable to couple to an electrochromic device. The dual rail driver includes a controller coupled to the H bridge through a failsafe module and configurable to control switches of the H bridge to charge and discharge the electrochromic device from the first power supply rail and the second power supply rail. The failsafe module is configurable to override one or more signals from the controller that controls the switches of the H bridge through the failsafe module, responsive to detecting anomaly of the electrochromic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.