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Tesla patents magnetic shunt for toroidal magnetic assembly

Patent drawing
Patent drawing from the official filing.

Tesla has filed a patent application for a magnetic assembly that uses a toroidal core with two separate windings. The design includes a magnetic shunt placed in the space between the windings to control the magnetic flux and improve performance.

Why it mattersThis is a routine hardware improvement that could help Tesla optimize the efficiency of its electric motors or other electromagnetic components.

In the filing’s own words

A magnetic assembly includes at least an electromagnetic core, a first winding, a second winding, and a magnetic shunt. The first winding and the second winding are attached to the electromagnetic core, and are separated by a space. The magnetic shunt is disposed in the space. The first winding and the second winding are configured to at least generate a magnetic field when an electric current passes the first winding and the second winding. The magnetic shunt is configured to at least control a magnetic flux associated with the magnetic field to improve electromagnetic performance.

What exactly they claim (claim 1)

1. A toroidal magnetic assembly comprising: an electromagnetic core comprising a housing; a first winding at least partially wrapping around the electromagnetic core; a second winding at least partially wrapping around the electromagnetic core, the first winding and the second winding separated by a portion of the housing; and a first magnetic shunt disposed in the portion of the housing, wherein the first winding or the second winding is configured to at least generate a magnetic field when an electric current passes the first winding or the second winding, and wherein the first magnetic shunt is configured to at least modify a magnetic flux associated with the magnetic field.

Facts

Company
Tesla (Tesla, Inc.)
Official title
MAGNETIC SHUNT FOR TOROIDAL MAGNETIC ASSEMBLY
Publication number
US20260311929A1
Application number
19170963
Filed
Apr 4, 2025
Published
Oct 8, 2026
Inventors
3
Claims
20

Classified under

H01F 27/306 Electricity & electronicsH01F 27/02 Electricity & electronicsH01F 27/24 Electricity & electronicsH01F 41/06 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.