Renault has been granted a patent for a wound rotor design for electric machines. The rotor includes a shaft with a slipring, winding wire, and n wound poles wound in ascending order around the main axis, with the last pole not being wound last. GlobalData’s report on Renault gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Renault, Battery management systems was a key innovation area identified from patents. Renault's grant share as of May 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.
Electric machine wound rotor with ascending order wound poles
A recently granted patent (Publication Number: US12003153B2) discloses a unique wound rotor design for electric machines. The rotor includes a shaft with a slipring, winding wire, and n wound poles arranged in ascending numerical order around the main axis. What sets this design apart is that the poles are wound with the wire in series turn by turn according to their numerical order, even though the last pole to be wound is not the final one. Additionally, the poles are distributed radially around the main axis, with specific angles at which the wire rests against the shaft before and after winding.
To facilitate the winding process, the rotor includes pins that run parallel to the main axis, aiding in the placement of the wire between poles and the shaft/slipring. This innovative design extends beyond just the rotor itself, as it is intended for use in electric machines and vehicles, particularly motor vehicles. The method for obtaining this unique wound rotor involves winding the poles with the wire in series turn by turn, following their numerical order, despite the unconventional sequence in which the last pole is wound. This patent showcases a novel approach to rotor design that could have significant implications for the efficiency and performance of electric machines in various applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
