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.:
Date of Patent:
Oct. 20, 2026
Filed:
Jun. 22, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Shuonan Xu, Troy, MI (US);
Lei Hao, Troy, MI (US);
Neeraj S. Shidore, Novi, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Nicholas W. Pinto, Shelby Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A battery electric system includes an inverter connected to a battery pack and a direct current (DC) voltage bus, first and second electrical switches, and a battery controller. The first switch is connected between the inverter and battery pack, and opens during an alternating current (AC) self-heating mode of the battery pack. This mode includes generating an AC waveform through the battery pack via the inverter at a controlled amplitude. The second switch, which is connected to the inverter and the first switch, closes during the self-heating mode. The controller, in response to calibrated entry criteria, opens the first switch, closes the second switch, and controls ON/OFF conducting states of the power switches to self-heat the battery pack using the AC waveform. The entry criteria includes required charging of the battery pack while a temperature of the battery pack is less than a calibrated temperature limit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile