Patent ID: 9705343
Date: 2017-07-11
CPC Classifications: H01M,H02J,Y02E,Y02T

Claim:
1. A voltage equalizer comprising: a first voltage detector that detects voltages of a plurality of cells that constitute a first battery pack; a second voltage detector that detects voltages of a plurality of cells that constitute a second battery pack connected in parallel to the first battery pack; a plurality of first resistors that are respectively connected in parallel to the plurality of cells that constitute the first battery pack; a plurality of second resistors that are respectively connected in parallel to the plurality of cells that constitute the second battery pack; a plurality of first switches that are respectively provided between the plurality of cells that constitute the first battery pack and the plurality of first resistors; a plurality of second switches that are respectively provided between the plurality of cells that constitute the second battery pack and the plurality of second resistors; and a controller