Patents
US 12770953 B2: Battery electric system with alternating current self-heating mode
- Granted
- 2026-10-20
- Filed
- 2023-06-22 application 18339698
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
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.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| GM Global Technology Operations LLC 19,536 patents | US company or organization | Detroit, MI | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Shuonan Xu | Troy, MI | 17 | PTBLXML, file of 2026-10-20 | |
| Lei Hao | Troy, MI | 152 | PTBLXML, file of 2026-10-20 | |
| Neeraj S. Shidore | Novi, MI | 32 | PTBLXML, file of 2026-10-20 | |
| Chandra S. Namuduri | Troy, MI | 317 | PTBLXML, file of 2026-10-20 | |
| Nicholas W. Pinto | Shelby Township, MI | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M10/615 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.