Patent ID: 9634512
Date: 2017-04-25
CPC Classifications: H02J

Claim:
1. An electronic uninterruptible power supply unit, comprising: one or more battery connections; a bi-directional converter in electrical communication with the one or more battery connections and arranged to (a) provide power at a first controlled voltage from the one or more battery connections as a boost converter when power is determined to not be available from a power source; and (b) provide charge to the one or more battery connections by providing power at a second controlled voltage that is different from the first controlled voltage when power is determined to be available from the power source, wherein the bi-directional converter comprises first and second solid state switches arranged in series with each other, and at least one reactive element electrically coupled to the first and second solid state switches; and third and fourth solid state switches connected in series with the one or more battery connections and arranged as a bi-directional switch that controls charging current for the one or more battery connections.