Patent ID: 7471065
Filing Date: 2008-12-30
Classification: B60L,H02J,Y02E,Y02T,Y04S

Abstract:
1. A multi-series battery control system comprising a plurality of unit battery cells, each unit battery cell of which unit consists of multiple battery cells, a control IC arrangement including a control IC chip containing a control circuit for controlling the unit battery cell and a cell monitor IC chip for monitoring the voltage of the unit battery cell, wherein the control IC arrangement includes a plurality of voltage input terminals configured to receive respective terminal voltages of respective battery cells of the unit battery cell, a voltage detection circuit which detects a terminal voltage of a selected voltage input terminal, first input and output terminals to send or receive a command and/or terminal voltages detected by the voltage detection circuit, second input and output terminals to send or receive a normal/abnormal-signal for indicating a normality/abnormality, wherein the control IC arrangement is configured such that the second output terminal sends an abnormal-signal indicating an abnormality when the second input terminal receives an abnormal-signal, the multi-series battery control system further including a main controller that sends and receives signal to/from the control IC arrangement via insulation communication components; where the control IC arrangement controls the unit battery cell; a plurality of control IC chips and a plurality of cell monitor IC chips, configured in pairs together, with each pair having one control IC chip and one cell monitor IC chip to control a mutually-different common unit battery cell of the plurality of unit battery cells in a ranking from highest to lowest, wherein a highest-ranking cell monitor IC chip is woken up by a first signal outputted from the main controller via the insulation communication components, and then each lower-ranking cell monitor IC chip is woken up one after another by the first signal relayed from a neighboring higher-ranking cell monitor IC chip to the lower-ranking cell monitor IC chip, and a highest-ranking control IC chip is woken up by a second signal outputted from the main controller via the insulation communication components, and then each lower-ranking control IC chip is woken up one after another by the second signal relayed from a neighboring higher-ranking control IC chip to the lower-ranking control IC chip.