Power conversion apparatus, method for controlling power supply, power system, and vehicle

By designing two DC-DC converter branches in new energy vehicles and utilizing the on-board charger's subsequent circuitry and magnetic devices, the power consumption problem when the DC-DC converter fails is solved, improving conversion efficiency and system stability, and meeting the needs of long-term driving.

WO2026123359A1PCT designated stage Publication Date: 2026-06-18YINWANG INTELLIGENT TECHNOLOGIES CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
YINWANG INTELLIGENT TECHNOLOGIES CO LTD
Filing Date
2024-12-13
Publication Date
2026-06-18

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Abstract

A power conversion apparatus, a method for controlling power supply, a power system, and a vehicle, relating to the technical field of new energy vehicles. The power conversion apparatus comprises: a first power conversion circuit (310), comprising an OBC and a third sub-conversion circuit (313), wherein the OBC comprises a first sub-conversion circuit (311) and a second sub-conversion circuit (312), the second sub-conversion circuit (312) is electrically connected to a power battery (400), the third sub-conversion circuit (313) is electrically connected to a load circuit (500), and the first sub-conversion circuit (311), the second sub-conversion circuit (312), and the third sub-conversion circuit (313) are coupled to each other; and a second power conversion circuit (320), a first end of the second power conversion circuit (320) being electrically connected to the load circuit (500), and a second end of the second power conversion circuit (320) being electrically connected to the power battery (400). The power conversion apparatus helps to improve the power conversion efficiency of DC-DC converters, and can still satisfy power demands for long-duration driving by a user when one of the DC-DC converters fails.
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