Battery control circuit responsive to external signal input
US8957638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2012 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To solve a problem in that, even after a charge inhibition signal is input from an input terminal and a charge control transistor is turned OFF, if a load is connected between external terminals (EB+, EB−), a discharge current flows, and to solve another problem of power consumption of a charge/discharge control circuit (22), provided is a charge/discharge control circuit for controlling charge/discharge of a secondary battery, the charge/discharge control circuit including: a switch circuit for controlling a current that flows through the charge/discharge control circuit; a control circuit for controlling an operation of the switch circuit; and an input terminal to which a signal for controlling an operation of the charge/discharge control circuit is input from outside. In this way, when a signal is input to the input terminal from outside, the discharge current is interrupted, thereby reducing current consumption of the charge/discharge control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.