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

Claim 18:
19. The energy storage apparatus according to claim 17, further comprising:
a first relay switch provided between the first input terminal and the switching module; and
a second relay switch provided between the second input terminal and the switching module,
wherein the upper arm switching elements include first and second upper arm switching elements connected in parallel between the first node of the switching module and the second node of the switching module,
wherein the lower arm switching elements include first and second lower arm switching elements connected in parallel between the third node of the switching module and the fourth node of the switching module,
wherein the first and second relay elements are electrically connected to the third node in the switching module, and
wherein when the first relay switch is turned off and the second relay switch is turned on, a DC voltage is provided through the second relay switch and the third node and is outputted to the DC link capacitor, or a DC voltage stored in the DC link capacitor is provided through the first node to charge the battery.