Patent ID: 8030898
Filing Date: 2011-10-04
Classification: H02J

Abstract:
1. A lithium-ion battery alarm-including protection apparatus, applicable to a lithium-ion battery containing several serially connected cells, including: a voltage balance controller, connected to the lithium-ion battery, the voltage balance controller being used to detect the terminal voltage of each cell, and to balance the terminal voltage of each cell; a protection unit, serially connected to the lithium-ion battery; and a microprocessor, connected to the voltage balance controller and the protection unit, the microprocessor receiving the terminal voltage of each cell, and calculating a charging voltage difference between the maximum terminal voltage and the minimum terminal voltage of the cell, the microprocessor further controlling the actions of the voltage balance controller based on the comparison result between the charging voltage difference and a plurality of critical voltage differences, and generating an alarm signal or controlling the actions of the protection unit.