公开(公告)号：US20240210157A1

公开(公告)日：2024-06-27

申请号：US18087452

申请日：2022-12-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael P. BALOGH ,  William OSAD ,  Andrew J. GALANT ,  Niccolo JIMENEZ ,  Alexander MILLERMAN

IPC: G01B7/24 ,  G01R31/382 ,  H01M10/48 ,  H01M50/109

CPC classification number: G01B7/24 ,  G01R31/382 ,  H01M10/48 ,  H01M50/109

Abstract: A system for measuring battery dilation. The system includes a battery cell, a magnet, and a magnetic force sensor. One of the magnet and the magnetic force sensor moves in response to expansion of the battery cell during dilation of the battery cell. The other of the magnet and the magnetic force sensor is stationary relative to the battery cell. The magnetic force sensor is configured to sense a change in magnetic force strength between the magnet and the magnetic force sensor. A control module is in communication with the magnetic force sensor. The control module is configured to measure degree of dilation of the battery cell based on the change in the magnetic force strength between the magnet and the magnetic force sensor. The magnetic force strength between the magnet and the magnetic force sensor changes as the battery cell expands during dilation.

公开(公告)号：US20240047821A1

公开(公告)日：2024-02-08

申请号：US17880521

申请日：2022-08-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Biqiong WANG ,  Meinan HE ,  Mei CAI ,  Andrew J. GALANT ,  William OSAD

IPC: H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M50/403 ,  H01M50/431 ,  H01M50/449 ,  H01M50/46 ,  C23C16/30 ,  C23C16/455

CPC classification number: H01M4/0428 ,  H01M4/366 ,  H01M4/62 ,  H01M50/403 ,  H01M50/431 ,  H01M50/449 ,  H01M50/46 ,  C23C16/30 ,  C23C16/45553 ,  H01M2004/027

Abstract: A method for manufacturing an interfacial lithium fluoride layer for an electrochemical cell that cycles lithium ions is disclosed. In the method, a substrate is positioned in a reaction chamber of an atomic layer deposition reactor and a lithium fluoride (LiF) precursor is introduced into the reaction chamber such that the LiF precursor contacts and chemically reacts with functional groups on the substrate. Then, an oxidant is introduced into the reaction chamber to form a single molecular layer of lithium fluoride on the substrate. The lithium fluoride layer is formed on the substrate at a temperature of greater than or equal to about 110 degrees Celsius to less than or equal to about 250 degrees Celsius.

公开(公告)号：US20240353216A1

公开(公告)日：2024-10-24

申请号：US18305075

申请日：2023-04-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael P. BALOGH ,  Andrew J. GALANT ,  William OSAD ,  Ratandeep Singh KUKREJA

IPC: G01B7/14

CPC classification number: G01B7/14

Abstract: A dilatometer for measuring battery dilation includes a battery cell, a magnet, and a magnetic force sensor. One of the magnet and the magnetic force sensor moves in response to expansion of the battery cell during dilation of the battery cell and the other of the magnet and the magnetic force sensor is stationary relative to the battery cell. The magnetic force sensor is configured to sense a change in magnetic force strength between the magnet and the magnetic force sensor. A sensor is configured to sense one of temperature and strain. A controller is configured to measure dilation of the battery cell based on the change in the magnetic force strength between the magnet and the magnetic force sensor and to compensate the dilation of the battery cell in response to the one of the temperature and the strain.

公开(公告)号：US20230142289A1

公开(公告)日：2023-05-11

申请号：US17522553

申请日：2021-11-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei WANG ,  Anil BIKA ,  Gongshin QI ,  Michelle H. WIEBENGA ,  Andrew J. GALANT ,  William OSAD

IPC: H01M10/48 ,  G01R31/392 ,  G01R31/367

CPC classification number: H01M10/486 ,  G01R31/392 ,  G01R31/367

Abstract: A battery cell monitoring system includes: a battery cell including an electrode stack disposed within a case; a gas sensor disposed within, attached to or connected to the case and configured to detect levels of one or more gases within the case; and a gas monitoring circuit connected to the gas sensor. The gas monitoring circuit includes: a memory that stores data collected from the gas sensor; a transceiver configured to transfer the data to a network device separate from the battery cell; and a control module that monitors the levels of one or more gases and based on the levels of the one or more gases detects (i) an issue with the battery cell during operative use of the battery cell, (ii) an issue with the battery cell during formation of the battery cell, or (iii) completion of a formation operation of the battery cell.