Invention Grant
US09274178B2 Apparatus and method for detecting battery abnormality and cause thereof
有权
用于检测电池异常及其原因的装置和方法
- Patent Title: Apparatus and method for detecting battery abnormality and cause thereof
- Patent Title (中): 用于检测电池异常及其原因的装置和方法
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Application No.: US13785684Application Date: 2013-03-05
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Publication No.: US09274178B2Publication Date: 2016-03-01
- Inventor: Wei Zhang
- Applicant: O2 Micro Inc.
- Applicant Address: US CA Santa Clara
- Assignee: O2 MICRO INC.
- Current Assignee: O2 MICRO INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Priority: CN201210068838 20120315
- Main IPC: G01R31/00
- IPC: G01R31/00 ; G01R31/36 ; G01R31/04
Abstract:
Methods and apparatus for detecting abnormality of a battery pack are disclosed. The battery pack includes multiple battery cells coupled in series via at least one connecting wire. A first voltage drop between a positive electrode and a negative electrode of the battery pack is detected. A first set of voltage drops between a positive electrode and a negative electrode of each battery cell in the battery pack is also detected. A total voltage drop across the at least one connecting wire in the battery pack is calculated based on an absolute difference between the first voltage drop and a sum of the first set of voltage drops. Whether the battery pack is abnormal is determined by assessing the total voltage drop across the at least one connecting wire with respect to a predetermined threshold.
Public/Granted literature
- US20130245970A1 Apparatus and Method for Detecting Battery Abnormality and Cause Thereof Public/Granted day:2013-09-19
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