| 发明名称 | Electronic apparatus | ||
| 摘要 | When discharge power calculated based on a current value detected by a current detector is smaller than expected maximum power, which is the maximum power expected in an actual operation, a discharge efficiency at the expected maximum power is set as a discharge efficiency used for remaining capacity calculation. This ensures that a remaining capacity based on power required for a photographing operation can be detected. | ||
| 申请公布号 | US9043175(B2) | 申请公布日期 | 2015.05.26 |
| 申请号 | US201113114985 | 申请日期 | 2011.05.24 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Tohyama Kei |
| 分类号 | G01R31/36 | 主分类号 | G01R31/36 |
| 代理机构 | Canon U.S.A. Inc., IP Division | 代理人 | Canon U.S.A. Inc., IP Division |
| 主权项 | 1. A battery pack comprising: a first detecting unit that detects a remaining capacity of a battery pack by using a first discharge efficiency if a discharge power of the battery pack is smaller than a predetermined power, wherein the first discharge efficiency is detected by using the predetermined power and a temperature of the battery pack; and a second detecting unit that detects a remaining capacity of the battery pack by using a second discharge efficiency if the discharge power is not smaller than the predetermined power, wherein the second discharge efficiency is detected by using the discharge power and the temperature of the battery pack. | ||
| 地址 | Tokyo JP | ||