Patent · US Active

Battery pack, method for detecting battery pack, charging assembly and electric tool

US9726731B2 · kind B2 · utility

2Cited by

2References

3Claims

0Family size

Assignee

Chervon (HK) Limited · CN

Inventors

Dezhong Yang · Nanjing, CN
Pingbo Shi · Nanjing, CN
Lei Liu · Thousand Oaks, US
Zheng Geng · Rockville, US
Lei Wang · Singapore, SG
Junya Duan · Nanjing, CN
Yingdian Xiang · Nanjing, CN

Key dates

Filing date	Dec 26, 2014
Grant date	Aug 8, 2017
Priority date	—
Expiry date	Mar 19, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A battery pack, a method for detecting the battery pack, a charging assembly, and an electric tool are provided for detecting voltage and disconnection of the battery cells. The battery pack may have an output voltage of at least 56V and may include a plurality of series connection units. A voltage detecting module may be utilized for detecting voltage in the battery pack. A battery control module configured to control voltage detecting module may also be employed. The method may involve determining whether the series connection units are disconnected based on rates of voltage change or internal-resistance of the series connection units.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.