公开(公告)号：US20210110979A1

公开(公告)日：2021-04-15

申请号：US16786453

申请日：2020-02-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaochao QUE ,  Dave G. RICH ,  Haijing LIU ,  Dewen KONG

IPC: H01G11/06 ,  H01G11/50 ,  H01G11/34 ,  H01G11/66 ,  H01M4/133 ,  H01M12/02 ,  H01M10/0525

Abstract: A capacitor-assisted hybrid lithium-ion electrochemical cell assembly includes two positive electrodes having a first polarity, each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. Further, two negative electrodes having a second polarity each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. At least one of the two positive electrodes or negative electrodes are distinct from one another. The electrically conductive tabs are substantially aligned in the electrochemical cell to respectively define a plurality of positive electrical connectors and a plurality of negative electrical connectors to reduce current density during high power charging and discharging.

公开(公告)号：US20210066687A1

公开(公告)日：2021-03-04

申请号：US16661380

申请日：2019-10-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaochao QUE ,  Meiyuan WU ,  Haijing LIU ,  Sherman H. ZENG

IPC: H01M2/10 ,  H01M10/0525 ,  H01M2/30 ,  H01M4/04 ,  H01M4/66

Abstract: An electrode component according to various aspects of the present disclosure includes an electrically-conductive layer and an electrode layer. The electrically-conductive layer includes a current collector portion and a tab portion. The electrode layer is disposed on at least a portion of the current collector portion. The electrode layer includes a first edge. The electrode layer includes an electroactive material. The electrode layer defines a first dimension substantially parallel to the first edge and a second dimension substantially perpendicular to the first edge. An aspect ratio of the first dimension to the second dimension is greater than or equal to about 2. The tab portion is disposed adjacent to at least a portion of the first edge. An interface between the electrode layer and the tab portion defines an interface length of greater than or equal to about 50% of the first dimension.