Battery protecting circuit, battery protecting device, and battery pack
US9373953B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Mar 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A disclosed battery protecting circuit for protecting a secondary battery including at least first and second cells connected in series includes a first terminal connected on a high potential side of the first cell; a second terminal connected on a low potential side of the first cell and a high potential side of the second cell; a third terminal connected on a low potential side of the second cell; a charge abnormality detecting circuit detecting abnormality of the charged state of the secondary battery; a shifting circuit shifting electric potential of the second terminal on a side of the first terminal or a third terminal when a disconnection occurs between the secondary battery and the second terminal; a disconnection detecting circuit detecting the disconnection based on the electric potential of the second terminal; and a latching circuit retaining a result detected by the disconnection detecting circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.