公开(公告)号：US20250062411A1

公开(公告)日：2025-02-20

申请号：US18452082

申请日：2023-08-18

Applicant: GM Global Technology Operations LLC

Inventor： Gongshin Qi ,  Chuanlong Wang ,  Vamakshi Yadav ,  Wei Li

IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

Abstract: In an embodiment, an electrolyte for a lithium-ion battery includes a lithium salt, a phosphorus-containing additive, and a solvent. In an embodiment, a lithium-ion battery comprises an anode, a cathode, an electrolyte and a separator. The anode comprises an anode active layer. The cathode comprises a cathode active layer, where the cathode active layer comprises lithium and manganese-rich layered-structure material. The electrolyte comprises a phosphorus-containing additive. The separator is disposed between the anode and the cathode.

公开(公告)号：US20240405298A1

公开(公告)日：2024-12-05

申请号：US18327484

申请日：2023-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michelle H. WIEBENGA ,  Rashmi Prasad ,  Vamakshi Yadav ,  Lei Wang ,  Chandra S. Namuduri

IPC: H01M10/42 ,  H01M10/48 ,  H01M50/103 ,  H01M50/209 ,  H01M50/342

Abstract: A system for detecting bulging or rupturing of a vent cap includes a battery cell including a rigid enclosure, first and second terminals, and a vent cap. A first sensor is arranged adjacent to the vent cap and configured to sense a parameter affected by rupturing of the vent cap. A controller is configured to compare the parameter to a predetermined parameter and to detect rupturing of the vent cap in response to the comparison.

公开(公告)号：US20250076385A1

公开(公告)日：2025-03-06

申请号：US18457719

申请日：2023-08-29

Applicant: GM Global Technology Operations LLC

Inventor： Michelle H. Wiebenga ,  Erik Brandon Golm ,  Lei Wang ,  Vamakshi Yadav

IPC: G01R31/36

Abstract: A battery cell chemistry test fixture includes a housing including a battery cell chamber. A first electric terminal is electrically connectable to a battery cell in the battery cell chamber. A second electric terminal is electrically connectable to the battery cell in the battery cell chamber. A plurality of sensor connectors is mounted to the housing. The plurality of sensor connectors include at least a gas sampling connector, a pressure sensor connector, and a valve connector, each of the gas sampling connector, the pressure sensor connector, and the valve connector being fluidically connected with the battery cell chamber.

公开(公告)号：US20250105270A1

公开(公告)日：2025-03-27

申请号：US18471510

申请日：2023-09-21

Applicant: GM Global Technology Operations LLC

Inventor： Vamakshi Yadav ,  Devendrasinh Darbar ,  Raneen Taha ,  Wei Li

IPC: H01M4/505 ,  H01M4/04 ,  H01M10/0525

Abstract: A cathode active particles for use in a cathode of a lithium ion battery comprising a core includes a lithium-manganese-rich oxide and a coating on the core, wherein the coating includes a lithium manganese spinel. The cathode active particle can be made by preparing a dispersion of particles comprising a lithium-manganese-rich metal oxide in an aqueous solution of a salt of a transition metal oxide. The dispersion is mixed, and heated to a temperature in a range of 60 to 125° C. The solids are separated from the dispersion, and calcined. The cathode active particles can be used in cathode and in a battery comprising such cathode.