US 2021/0281094 A1 · POWER CONVERTING DEVICE, AND ENERGY STORAGE APPARATUS INCLUDING THE SAME

Abstract

A power converting device, such as one used in an energy storage apparatus, comprises a first input terminal to receive a first DC voltage from a battery, a second input terminal to receive a second DC voltage from a power generation device, a switching module including a plurality of upper arm switching elements and a plurality of lower arm switching elements, and to output DC voltage to a DC link by switching the first DC voltage or the second DC voltage, and, a DC link capacitor disposed at the DC link, wherein at least some of the plurality of lower arm switching elements of the switching module operate in a power generation mode of the power generation device, and at least some of the plurality of upper arm switching elements of the switching module operate in a charging mode of the battery.

Claims20

Dependent claims

A power converting device comprising:

a first input terminal electrically coupled to a battery;
a second input terminal electrically coupled to a power generation device;
a switching module including a plurality of upper arm switching elements and a plurality of lower arm switching elements, and configured to switch between at least one of a first DC voltage between the first input terminal and a direct current (DC) terminal and a second DC voltage between the second input terminal and the DC terminal;
and
a DC link capacitor provided at the DC terminal,
wherein the first input terminal and the DC terminal are electrically connected via at least one of the plurality of lower arm switching elements when the switching module operates to receive power from the power generation device, and
wherein the second input terminal and the DC terminal are electrically connected via at least one of the plurality of upper arm switching elements when the switching module operates to charge the battery.

4 more elements

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;
and
a switching module including a plurality of upper arm switching elements and a plurality of lower arm switching elements, 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,
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.

7 more elements

Dependencies are inferred from the claim text.

Power converting device, and energy storage apparatus including the same

Life of this patent

Power converting device, and energy storage apparatus including the same

Life of this patent

Abstract

Claims20