发明申请
- 专利标题: APPARATUS AND METHOD FOR ESTIMATING SOC OF SECONDARY BATTERY INCLUDING BLENDED CATHODE MATERIAL
- 专利标题(中): 二次电池SOC估算装置及方法,包括混合阴极材料
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申请号: US14565647申请日: 2014-12-10
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公开(公告)号: US20150137822A1公开(公告)日: 2015-05-21
- 发明人: Won-Tae JOE , Sun-Young CHA , Geun-Chang CHUNG
- 申请人: LG CHEM, LTD.
- 申请人地址: KR Seoul
- 专利权人: LG CHEM, LTD.
- 当前专利权人: LG CHEM, LTD.
- 当前专利权人地址: KR Seoul
- 优先权: KR10-2012-0063332 20120613; KR10-2013-0028286 20130315
- 主分类号: G01R31/36
- IPC分类号: G01R31/36
摘要:
Disclosed is an apparatus and method for estimating a SOC of a secondary battery containing a blended cathode material. The SOC estimating apparatus estimates a SOC of a secondary battery including a cathode having a blended cathode material containing a first cathode material and a second cathode material with different operating voltage ranges, an anode having an anode material, and a separator for separating the cathode from the anode, and the apparatus includes a sensor configured to measure a discharge inception voltage and a final discharge voltage when the secondary battery is discharged for a predetermined time, and a control unit configured to estimate SOC of the secondary battery corresponding to the measured discharge inception voltage and the measured final discharge voltage by using a predetermined relationship between the discharge inception voltage and the final discharge voltage and the SOC of the secondary battery.