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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12767007 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Nov. 21, 2023

Alternating current battery heating in electrical system having multiple electric motors

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Renato Amorim Torres, Pontiac, MI (US);

Neeraj S. Shidore, Novi, MI (US);

Suresh Gopalakrishnan, Troy, MI (US);

Wesley G. Zanardelli, Rochester, MI (US);

Madhusudan Raghavan, West Bloomfield, MI (US);

Satish P. Ketkar, Troy, MI (US);

Vinod Chowdary Peddi, Shelby Township, MI (US);

Chandra S. Namuduri, Troy, MI (US);

Lei Hao, Troy, MI (US);

Assignee:

GM Global Technology Operations LLC, Detroit, MI (US);

Attorney:

Quinn IP Law

Primary Examiner:

Cortez M Cook

Int. Cl.
CPC ...
B60L 1/00 (2006.01); B60L 50/51 (2019.01); B60L 58/27 (2019.01);
U.S. Cl.
CPC ...
B60L 58/27 (2019.02); B60L 50/51 (2019.02); B60L 2240/545 (2013.01);
Abstract

A multi-motor electrical system for a motor vehicle or another host system includes a plurality of inverter circuits connected to the battery pack, a plurality of electric motors connected to the battery pack via a corresponding one of the inverter circuits, and an electronic controller. In response to predetermined entry conditions, the controller is configured to perform a method by which the controller monitors respective motor temperatures of the motors, selectively injects respective direct-axis (d-axis) currents into the motors via manipulation of a corresponding d-axis voltage command thereto, and generates an alternating current (AC) battery current via simultaneous operation of the electric motors using the d-axis currents. The controller heats the battery pack using the AC battery current by coordinating an injection of the d-axis currents, such that the respective motor temperatures do not exceed a predetermined motor temperature limit.

Find Patent Forward Citations

Amorim Torres, Renato. (2026). Alternating current battery heating in electrical system having multiple electric motors (U.S. Patent No. 12767007). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12767007

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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