公开(公告)号：US20180342722A1

公开(公告)日：2018-11-29

申请号：US15604759

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sherman Zeng ,  Xiaochao Que ,  Haijing Liu

IPC: H01M2/26 ,  H01M2/20 ,  H01M2/30 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0585

CPC classification number: H01M2/26 ,  H01M2/206 ,  H01M2/305 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/20

Abstract: Lithium battery cells, and battery packs comprising the same, include an electrolyte, and an anode and a cathode, each of which include a current collector having a length, the length defining a first end and a second end, a width, a host or active material disposed on the current collector between the first end and the second end, a first tab extending from the first end, and a second tab extending from the second end. A plurality of cells can be stacked in a planar configuration, and a plurality of anode first tabs, a plurality of anode second tabs, a plurality of cathode first tabs, and a plurality of cathode second tabs can each be electrically connected via a respective busbar. The anode and cathode can have a length:width ratio of at least three, or 2.5 to 10. The battery cell can be a power source for an electric/hybrid vehicle.

公开(公告)号：US20180237656A1

公开(公告)日：2018-08-23

申请号：US15435820

申请日：2017-02-17

Applicant: GM Global Technology Operations LLC

Inventor： Fang Dai ,  Mei Cai ,  Tao Wang ,  Mohammed Bahauddin ,  Sherman Zeng

IPC: C09D171/00 ,  H01M2/10 ,  H01M10/0525

CPC classification number: C09D171/00 ,  F28D1/03 ,  H01M2/1077 ,  H01M2/1094 ,  H01M10/0525 ,  H01M10/625 ,  H01M10/6567 ,  H01M2220/20 ,  Y02E60/122

Abstract: The present disclosure provides a battery pack component including a self-healing coating. The self-healing coating is disposed on at least a portion of a surface of the battery pack component. The self-healing coating includes a first precursor including a cyclic ether capable of reacting in a self-healing cationic ring-opening polymerization reaction. The self-healing coating further includes an initiator including an alkali metal salt. The self-healing cationic ring-opening polymerization reaction occurs when a defect is present in the self-healing coating. In certain aspects, the cyclic ether may include 1,3-dioxolane (C3H6O2) and the initiator may include lithium bis(fluorosulfonyl)imide (F2NaNO4S2). In other aspects, the self-healing coating may include a second precursor that is capable of copolymerizing with the first precursor. In still other aspects, the present disclosure provides a method of making a self-healing coating for a battery pack component.

公开(公告)号：US10319978B2

公开(公告)日：2019-06-11

申请号：US15604759

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sherman Zeng ,  Xiaochao Que ,  Haijing Liu

IPC: H01M2/26 ,  H01M2/30 ,  H01M2/20 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0585

Abstract: Lithium battery cells, and battery packs comprising the same, include an electrolyte, and an anode and a cathode, each of which include a current collector having a length, the length defining a first end and a second end, a width, a host or active material disposed on the current collector between the first end and the second end, a first tab extending from the first end, and a second tab extending from the second end. A plurality of cells can be stacked in a planar configuration, and a plurality of anode first tabs, a plurality of anode second tabs, a plurality of cathode first tabs, and a plurality of cathode second tabs can each be electrically connected via a respective busbar. The anode and cathode can have a length:width ratio of at least three, or 2.5 to 10. The battery cell can be a power source for an electric/hybrid vehicle.