Patent ID: 11863003
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. An energy storage apparatus comprising:
a battery; and
a power converting device configured to receive a direct current (DC) voltage from a power generation device or the battery, perform power conversion of the DC voltage, charge the battery, and supply voltage according to the power conversion,
wherein the power converting device includes:
a first input terminal electrically coupled to the battery;
a second input terminal electrically coupled to the power generation device;
a switching module including a plurality of upper arm switching elements connected in parallel between a first node and a second node and a plurality of lower arm switching elements connected in parallel between a third node and a fourth node, and configured to switch between at least one of a first DC voltage between the first input terminal and a DC link capacitor and a second DC voltage between the second input terminal and the DC link capacitor;
a first inductor provided between the first input terminal and the second node:
a second inductor provided between the second input terminal and the third node;
a first diode provided between the second node and a ground; and
a second diode provided between the third node and the DC link capacitor,

wherein at least one of the plurality of lower arm switching elements of the switching module is switched on when the power converting device receives DC voltage from the power generation device, and
wherein at least one of the plurality of upper arm switching elements of the switching module is switched on when the power converting device charges the battery.