| 摘要 |
A voltage detecting circuit 2 for a cell combination comprising one or more cell blocks having a plurality of cell modules connected to each other in series, the circuit wherein voltage detecting lines 21 to 26 extend, respectively, from a plurality of voltage detecting points V1 to V6 of the cell combination 1, one of lines 23 is connected to the ground, and nongrounding voltage detecting lines are each interconnected through voltage branch lines 31 to 35 to the grounding voltage detecting line 23. A voltage dividing resistor is interposed on each of the nongrounding voltage detecting lines and each of the voltage branch lines. Each of the nongrounding voltage detecting line is connected to a computing circuit 5 via an analogue-digital converter 4. The computing circuit 5 calculates voltage of each of cell modules based on voltage detecting data input from each of the nongrounding voltage detecting lines. Accordingly, the number of parts is reduced, voltage detecting accuracy is improved, and disconnection is reliably detected. <IMAGE> |
