Voltage detection circuit
US9671469B2 · kind B2 · utility
6Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2011 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/396
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A voltage detection circuit for a secondary battery. A secondary battery is composed of a plurality of battery blocks (B1) to (B3), and is connected to a flying capacitor (C1) via input side sampling switches (SW1) to (SW3). The flying capacitor (C1) is connected to a differential amplifier circuit (10) via output side sampling switches (SWa) and (SWb). A feedback capacitor (C2) is connected to an inverting input terminal of the differential amplifier circuit (10) to form an integrator circuit, which reduces the capacitance of the flying capacitor (C1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.