| 摘要 |
An assembled battery comprising multiple cells series-coupled in multiple stages connects multiple voltage measuring units measuring each voltage of the cells and a battery system control unit through a common bus. The voltage measuring units each include an analog front end unit which measures the voltage of the cells, an interface unit for interfacing with the common bus, a voltage measurement control unit which controls the analog front end unit and the interface unit, and an insulating element which allows communication between the voltage measurement control unit and the interface unit in a state of being electrically insulated from each other. The interface unit of each voltage measuring units is electrically insulated, so the interface unit can be coupled to a low-voltage power supply system of the same electrical system as the battery system control unit. Since there is no potential difference between the interface unit and the battery system control unit, the interface unit and the battery system control unit can be coupled to each other via the common bus. |
