Patent ID: 8228040
Filing Date: 2012-07-24
Classification: H01M,H02J,Y02E

Abstract:
1. A battery control system, including three or more communication devices that correspond to individual cells and that have been previously ranked, and a management device that transmits an actuating signal to said communication device with the highest rank, wherein said highest-rank communication device includes: a first detection unit which detects a voltage value of the corresponding cell; a first adjustment unit which adjusts a voltage of said corresponding cell; a first communication unit which communicates with said management device and a communication device with a rank immediately following said highest rank; and a first control section which transmits the voltage value detected by said first detection unit from said first communication unit to said immediately-following-rank communication device when said first communication unit accepts said actuating signal, and which adjusts the voltage of said corresponding cell to a voltage value, accepted by said communication unit from said immediately-following-rank transmission device, by use of said first adjustment unit when said first communication unit accepts said voltage value, said communication device with the lowest rank includes: a second detection unit which detects a voltage value of the corresponding cell; a second communication unit which communicates with a communication device with a rank immediately preceding said lowest rank; a second control section which selects a lower voltage value between a voltage value, which is accepted by said second communication unit from said immediately-preceding-rank communication device, and the voltage value detected by said second detection unit when said second communication unit accepts said voltage value, and which transmits said selected voltage value from said second communication unit to said immediately-preceding-rank communication device; and a second adjustment unit which adjusts a voltage of said corresponding cell to the voltage value selected by said second control unit, the other of said communication devices includes: a third detection unit which detects a voltage value of the corresponding cell; a third communication unit which communicates with communication devices with ranks immediately preceding and immediately following said other communication device; a third control unit which transmits a lower voltage value between a voltage value, which is accepted by said third communication unit from said immediately-preceding-rank communication device, and the voltage value detected by said third detection unit from said third communication unit to said immediately-following-rank communication device when said third communication unit accepts said voltage value, and which transmits a voltage value, which is accepted by said third communication unit from said immediately-following-rank communication device, from said third communication unit to said immediately-preceding-rank communication device when said third communication unit accepts said voltage value; and a third adjustment unit which adjusts a voltage of said corresponding cell to the voltage value accepted from said immediately-following-rank communication device.