Control method for disconnecting switches integrated in series-connected batteries
US10014697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Feb 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods of providing integrated battery protection for a plurality of series-connected batteries, in which a plurality of controllable switches are used to disconnect or otherwise isolate the respective batteries, substantially simultaneously, from an external circuit in response to certain fault or non-fault battery conditions. When the plurality of controllable switches are synchronously transitioned from a closed or “ON” state to an opened or “OFF” state, the voltages of the respective batteries become distributed among the controllable switches, allowing for the use of switches having a reduced voltage rating as well as a reduced cost. By connecting a balancing resistor across each of a plurality of series-connected battery/switch pairs, a more even distribution of the voltages of the respective batteries among the controllable switches can be achieved, providing the system with more predictable operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.