Battery charging circuit with thermostat control
US3935525A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Sep 30, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/007194
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The embodiment of the battery charging circuit disclosed herein employs a relay which can be operated both mechanically and electrically. Mechanical operation is achieved by a manually operable push button which when depressed closes a relay contact in series with the relay winding. Current then flows into the winding to actuate the relay and provide a current path for the fast charge of a battery. If the battery temperature is elevated above a level considered safe for recharging, fast charging of the battery cannot occur until the battery has cooled. If the push button is depressed while the battery temperature is so elevated, it still closes the relay contact but no current flows into the winding. However, the push button is maintained in a depressed position by engagement with the relay armature. Once the battery cools, the already closed relay contact permits current to flow into the winding to actuate the relay and initiate a fast charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.