| 摘要 |
A controller, a first voltage detector, a second voltage detector, . . . and an nth voltage detector are connected together in series in this order via a common communication line. In ID setting operation, the controller transfers a unique ID of the first voltage detector to the first voltage detector via the communication line, and transfers a unique ID of the (i+1)th voltage detector to the (i+1)th voltage detector via the first to ith voltage detectors and the communication line (where in is a natural number equal to or less than (n−1)). |
| 主权项 |
1. A voltage detection device, comprising:
first to nth voltage detectors (where n is an integer equal to or greater than 2) which are connected to a battery pack composed of a plurality of unit batteries connected together, the battery pack being divided into n blocks, the first to nth voltage detectors detecting terminal voltages of the individual unit batteries on a block-by-block basis; a controller which receives voltage detection result signals indicating results of detection of the terminal voltages from the first to nth voltage detectors respectively after ID setting operation whereby the first to nth voltage detectors are assigned mutually different unique IDs; and a communication line which connects together the controller, the first voltage detector, the second voltage detector, . . . and the nth voltage detector in series in this order, wherein the communication line includes a synchronizing clock line for transfer of a synchronizing clock signal for achieving synchronization between the controller and the voltage detectors, and in the ID setting operation, the controller outputs a synchronizing clock signal with a predetermined clock count to the synchronizing clock line between the controller and the first voltage detector, the ith voltage detector outputs a synchronizing clock signal based on a received synchronizing clock signal to the synchronizing clock line between the ith voltage detector and (i+1)th voltage detector such that a clock count in a synchronizing clock signal received by each voltage detector differs among the first to n-th voltage detectors (where i is a natural number equal to or less than (n−1)), and each voltage detector takes as its own unique ID a unique ID according to the clock count in the received synchronizing clock signal. |
