Power conversion method, apparatus, and device, and medium

A power conversion method performed by a power conversion apparatus including:

• a configurable input interface;
• a power conversion circuit;
• and
• a configurable output interface,
• wherein the configurable input interface is arranged to configure a first electrical connection of an input power supply and the power conversion circuit, and is electrically connected with the input power supply and the power conversion circuit,
• wherein the configurable output interface is arranged to configure a second electrical connection of a load and the power conversion circuit, and is electrically connected with the load and the power conversion circuit, and
• wherein the power conversion circuit is arranged to perform corresponding power conversion according to parameters of the input power supply and parameters of the load,
• wherein power conversion performed by the power conversion circuit comprises at least two of the following:
• DC/DC step-up conversion, DC/DC step-down conversion, AC/DC conversion, DC/AC conversion, AC/AC conversion, or DC/DC step-up conversion first and then DC/AC conversion,
• wherein the configurable input interface comprises single-pole double-throw switches,
• wherein a first immovable end of a first single-pole double-throw switch and a second immovable end of a second single-pole double-throw switch are respectively arranged to be electrically connected with the input power supply,
• wherein a first plurality of movable ends of the first single-pole double-throw switch, and a second plurality of movable ends of the second single-pole double-throw switch are respectively arranged to be electrically connected with four input ends of the power conversion circuit,
• wherein the first and second plurality of movable ends are electrically connected with input ends of the power conversion circuit, respectively,
• wherein the configurable output interface comprises single-pole double-throw switches,
• wherein a third immovable end of a third single-pole double-throw switch and a fourth immovable end of a fourth single-pole double-throw switch are respectively arranged to be electrically connected with the load,
• wherein a third plurality of movable ends of the third single-pole double-throw switch, and a fourth plurality of movable ends of the fourth single-pole double-throw switch are respectively arranged to be electrically connected with four output ends of the power conversion circuit,
• wherein the third and fourth plurality of movable ends are electrically connected with output ends of the power conversion circuit, respectively,
• wherein the power conversion circuit comprises a first input end, a second input end, a third input end, and a fourth input end, a first output end, a second output end, a third output end, and a fourth output end, a first switching group, a second switching group, a third switching group, a fourth switching group, a fifth switching group, a sixth switching group, a seventh switching group, and an eighth switching group, a first inductor and a second inductor, and a capacitor,
• wherein the first input end is electrically connected with the first output end,
• wherein the fourth input end is electrically connected with the fourth output end,
• wherein the first switching group and the second switching group that are connected in series in a same direction, the third switching group and the fourth switching group that are connected in series in a same direction, the capacitor, the fifth switching group and the sixth switching group that are connected in series in a same direction, and the seventh switching group and the eighth switching group that are connected in series in a same direction are connected in parallel between the first input end and the fourth input end,
• wherein the first inductor is connected in series between the second input end and a series connection node of the first switching group and the second switching group,
• wherein the second inductor is connected in series between the second output end and a series connection node of the fifth switching group and the sixth switching group,
• wherein the third input end is electrically connected with a serial connection node of the third switching group and the fourth switching group,
• wherein the third output end is electrically connected with a serial connection node of the seventh switching group and the eighth switching group, and
• wherein each of the switching groups includes a triode and a diode that are connected in anti-parallel, comprising:
• configuring the first single-pole double-throw switch, the second single-pole double-throw switch, the third single-pole double-throw switch, and the fourth single-pole double-throw switch, according to parameters of an input power supply and parameters of a load;
• and
• controlling on/off of triodes in switching groups according to the parameters of the input power supply and the parameters of the load.