Patent ID: 9088162
Filing Date: 2015-07-21
Classification: B60L,H02J,Y02T

Abstract:
1. A hierarchical battery-management system, comprising: a decision and communication module; an intermediary module, wherein the intermediary module in a group records all cell voltages and cell temperatures in the group, screens cell information to get a maximum, minimum, and average of the cell voltages and temperature as a group status, and feeds the group status to the decision and communication module; a monitoring and equalizing module, wherein the monitoring and equalizing module gets cell voltages and cell temperatures of a plurality of battery cells, feeds the cell information to the intermediary module in the group, and receives balancing control information through the intermediary module; wherein the hierarchical battery-management system comprises more than two groups, each group has one intermediary module and more than two monitoring and equalizing modules, and the decision and communication module only electrically couples with the intermediary module which is set in each group, and the intermediary module only electrically couples with the monitoring and equalizing modules which is set in each group; and wherein the decision and communication module feeds the balancing control information to each intermediary module after getting all groups' statuses or deciding a balancing command, and makes decisions of low-voltage and over-voltage protection for the hierarchical battery-management system without sequentially polling each cell-level module, to increase communication and enhance a response speed of the management system.