发明名称 |
Apparatus for calculating residual capacity of secondary battery |
摘要 |
An apparatus for calculating a residual capacity of a secondary battery is provided. The apparatus calculates the residual capacity of energy in the secondary battery which is charged/discharged. The apparatus includes an arithmetic unit which estimates and calculates a first residual capacity based on a charge/discharge voltage corresponding to a residual capacity of the secondary battery, calculates a second residual capacity based on an integrated value of a charge/discharge current of the secondary battery, weights the charge/discharge voltage of the secondary battery with the first residual capacity or the second residual capacity according to the voltage changing rate, and combines the results of the weighting to obtain the residual capacity of the secondary battery. |
申请公布号 |
US8965722(B2) |
申请公布日期 |
2015.02.24 |
申请号 |
US201113337497 |
申请日期 |
2011.12.27 |
申请人 |
Denso Corporation |
发明人 |
Yoshida Syuuhei;Suzuki Satoru |
分类号 |
G01R31/36 |
主分类号 |
G01R31/36 |
代理机构 |
Nixon & Vanderhye P.C. |
代理人 |
Nixon & Vanderhye P.C. |
主权项 |
1. An apparatus for calculating a residual capacity of a secondary battery, the apparatus calculating the residual capacity of energy in the secondary battery which is charged/discharged, comprising:
an arithmetic unit which estimates and calculates a first residual capacity based on a charge/discharge voltage corresponding to a residual capacity of the secondary battery, calculates a second residual capacity based on an integrated value of a charge/discharge current of the secondary battery, weights the charge/discharge voltage of the secondary battery with the first residual capacity or the second residual capacity according to the voltage changing rate, and combines the results of the weighting to obtain the residual capacity of the secondary battery; wherein in calculating the second residual capacity, the arithmetic unit integrates the charge/discharge current in terms of time, and divides the resultant value of the integration by an actual battery capacity of the secondary battery to add the resultant value of the division to the previously calculated second residual capacity. |
地址 |
Kariya JP |