Power Conversion Equipment

JP2025508253A5Pending Publication Date: 2026-02-25LG INNOTEK CO LTD
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Patent Information

Application Number
JP2024555390
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-03-18
Filing Date
2023-03-16
Publication Date
2026-02-25

AI Technical Summary

Technical Problem

Existing two-way power converters lack the capability to perform precharge efficiently, which is essential for safe and reliable operation, especially when dealing with high-voltage batteries.

Method used

A two-way power conversion device is designed with a first switching unit, a transformer, a second switching unit, and a third switching unit that includes a first switch and a diode. This configuration allows for precharge mode operation, where the first switch can operate in PWM, on, or off modes based on the voltage of the first capacitor, enabling efficient precharge and voltage regulation.

Benefits of technology

The proposed solution enables average current mode control during boost mode operations, limits inrush current, and allows for various functions to be easily realized through PWM operation, thereby enhancing the reliability and safety of the power conversion process.

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Abstract

A bidirectional power conversion device according to one embodiment of the present invention includes a first switching unit including a plurality of switches connected to a first input / output terminal, a transformer having one side connected to the first switching unit, a second switching unit including a plurality of switches connected to the other side of the transformer, and a third switching unit connected to the other side of the transformer and a second input / output terminal, wherein the third switching unit includes a first switch having one end connected to the second input / output terminal and a first diode connected to the other end of the first switch.
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