×

Inter-module battery balancing using minimum cell voltages to select battery sub-modules to power loads

  • US 10,355,496 B1
  • Filed: 07/26/2018
  • Issued: 07/16/2019
  • Est. Priority Date: 07/26/2018
  • Status: Active Grant
First Claim
Patent Images

1. A method, comprising:

  • receiving, for each battery sub-module in a plurality of battery sub-modules, a voltage associated with a cell in that battery sub-module, wherein each battery sub-module in the plurality of battery sub-modules includes a plurality of cells;

    selecting a battery sub-module from the plurality of battery sub-modules based at least in part on the received voltages by;

    comparing a plurality of minimum cell voltages against a voltage threshold in order to identify any battery sub-modules with a minimum cell voltage that does not exceed the voltage threshold;

    selecting one or more maximums from the plurality of minimum cell voltages in order to obtain one or more maximums of the minimum cell voltages; and

    selecting said any identified battery sub-modules with a minimum cell voltage that does not exceed the voltage threshold and that do not correspond to one of the maximums of the minimum cell voltages; and

    configuring a set of one or more loads, which draws power from the selected battery sub-module and is not powered by any other battery sub-module in the plurality of battery sub-modules, so that the set of one or more loads at least temporarily does not draw power from the selected battery sub-module.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×