| 摘要 |
Provided is a cell system (100) wherein, e.g., a simple second cell unit (20) (e.g., a single cell (second cell (21))) is electrically connected in series to a first cell unit (10) (battery pack) that serves as the primary power source. The charge state (SOC) of the first cell unit (10) is detected on the basis of the mixed voltage (V3) of a first cell (11) included in the first cell unit (10) and the second cell (21). |
