Power distribution circuit for vehicles with energy regeneration

The power distribution circuit in electric vehicles addresses battery protection and regenerative charging by using diodes and bypass switches to isolate faults and manage power transfer, ensuring reliable and efficient operation.

JP2026074131APending Publication Date: 2026-05-01WISK AERO LLC
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Patent Information

Application Number
JP2026015842
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2020-02-03
Filing Date
2026-02-03
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing electric vehicles face challenges in protecting batteries from fault events while enabling regenerative charging, with issues such as charge shuttling and efficiency losses due to varying charge states and potential system instability.

Method used

A power distribution circuit with parallel-connected batteries, diodes to prevent reverse current flow, bypass switches for regenerative charging, and control devices to manage battery isolation and power transfer during faults, ensuring uninterrupted motor operation and efficient energy recovery.

Benefits of technology

The solution effectively isolates faulty batteries, prevents charge shuttling, maintains power delivery to propulsion motors, and enables efficient regenerative charging, enhancing system reliability and efficiency.

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Abstract

To provide a power distribution circuit for aircraft and an electric aircraft. [Solution] The power distribution circuit for an aircraft comprises a plurality of batteries, a plurality of inverters, each configured to be coupled to each of the plurality of batteries and to generate a plurality of input phases, a plurality of interphase transformers, each receiving one or more of the plurality of input phases and generating a combined single drive phase, and a motor configured to receive the combined single drive phase from each of the plurality of interphase transformers.
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