公开(公告)号：US20250030134A1

公开(公告)日：2025-01-23

申请号：US18355713

申请日：2023-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jing Gao ,  Brian J. Koch ,  Zhe Li ,  Huaxin Li ,  Anne Zhang

IPC: H01M50/54 ,  B60L50/64 ,  H01M50/249 ,  H01M50/46 ,  H01M50/533 ,  H01M50/534 ,  H01M50/536

Abstract: Presented are electrochemical devices with in-stack reference electrodes, methods for making/using such devices, and battery cells with stacked electrodes segregated by electrode separator assemblies having built-in reference electrodes. An electrochemical device includes a protective outer housing that contains an ion-conducting electrolyte. A stack of working electrodes is packaged inside the device housing in electrochemical contact with the electrolyte. At least one electrode separator assembly is located inside the housing, interposed between a neighboring pair of these working electrodes. The electrode separator assembly includes an electrically insulating separator sheet with a reference electrode. A tab pocket, which projects from an end of the separator sheet, includes a tab chamber with a chamber opening. An electrode tab is formed with an electrically conductive material and attached to the tab pocket. One end of the electrode tab is disposed in the tab chamber and the other end projects out from the chamber opening.

公开(公告)号：US20250079660A1

公开(公告)日：2025-03-06

申请号：US18461792

申请日：2023-09-06

Applicant: GM Global Technology Operations LLC

Inventor： Jing Gao ,  Anne Zhang ,  Brian J. Koch ,  Xingcheng Xiao ,  Zhe Li

IPC: H01M50/569 ,  B60L50/64 ,  G01K1/02 ,  G01K3/02 ,  H01M10/48

Abstract: A battery includes multiple stacked cells. Each cell includes an anode layer and a cathode layer separated by a permeable separator. At least one temperature probe structure is disposed on the permeable separator between the anode layer and the cathode layer of a first cell of the stacked cells. The temperature probe structure includes at least a first material partially coating the permeable separator and a second material partially coating the permeable separator. The first material overlaps with the second material at an overlap region. A first sensor output terminal is connected to the first material and a second sensor terminal is connected to the second material. A voltage differential between the first sensor output terminal and the second sensor output terminal corresponds to an average temperature of the overlap region.

公开(公告)号：US20250096438A1

公开(公告)日：2025-03-20

申请号：US18469786

申请日：2023-09-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anne Zhang ,  Jing Gao ,  Christine Labaza ,  Yifan Zhao ,  Brian J. Koch ,  Raneen Taha

IPC: H01M50/569 ,  B60L50/60 ,  H01M50/449 ,  H01M50/463 ,  H01M50/528

Abstract: Some embodiments disclosed herein are directed to connectors for thin-film functional separators in battery cells. In accordance with an exemplary embodiment, a thin-film functional separator for a battery cell is provided. The thin-film functional separator may be disposed within the battery cell, such as between a cathode and anode of the battery cell. The thin-film functional separator includes a porous composite membrane that includes a microporous substrate and a coating layer, and includes a lead extending from the porous composite membrane. The lead extending from the porous composite membrane is coupled to an external conductive tab using a mechanical connector that electrically couples the external conductive tab to the lead extending from the porous composite membrane. Other embodiments may be disclosed or claimed.