Invention Grant
US08902072B2 Apparatus and method for diagnosing abnormality in cell balancing circuit
有权
用于诊断电池平衡电路异常的装置和方法
- Patent Title: Apparatus and method for diagnosing abnormality in cell balancing circuit
- Patent Title (中): 用于诊断电池平衡电路异常的装置和方法
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Application No.: US13195578Application Date: 2011-08-01
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Publication No.: US08902072B2Publication Date: 2014-12-02
- Inventor: Sang-Hoon Lee , Dal-Hoon Lee , Ju-Hyun Kang , Jee-Ho Kim
- Applicant: Sang-Hoon Lee , Dal-Hoon Lee , Ju-Hyun Kang , Jee-Ho Kim
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2010-0019924 20100305
- Main IPC: G08B21/00
- IPC: G08B21/00 ; G01R31/28 ; H02J7/00 ; G01R31/36

Abstract:
Provided are an apparatus and a method for diagnosing an abnormality in a cell balancing circuit. The apparatus may include a plurality of cell balancing circuits respectively connected to a plurality of battery cells included in a battery pack for balancing the voltages of the battery cells, a diagnosis resistor respectively installed between the cell balancing circuit and a cathode terminal and an anode terminal of the corresponding battery cell, a voltage measuring unit for measuring a voltage difference of the balancing circuit corresponding to each of the battery cells, and a control unit for turning on or off a cell balancing circuit to be diagnosed and for determining whether there is an abnormality in the cell balancing circuit to be diagnosed, based on a variation pattern of a voltage difference of a cell balancing circuit adjacent to the cell balancing circuit to be diagnosed that is measured by the voltage measuring unit.
Public/Granted literature
- US20110285538A1 APPARATUS AND METHOD FOR DIAGNOSING ABNORMALITY IN CELL BALANCING CIRCUIT Public/Granted day:2011-11-24
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