公开(公告)号：US20240405332A1

公开(公告)日：2024-12-05

申请号：US18325515

申请日：2023-05-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hui-ping WANG ,  Lu HUANG ,  Fang DAI ,  Guangze LI ,  Mei CAI

IPC: H01M50/209 ,  H01M10/04 ,  H01M10/6556 ,  H01M50/103 ,  H01M50/107 ,  H01M50/213

Abstract: A battery system includes N hollow battery cells, each including an enclosure including a top surface, a bottom surface, and a side wall; a hollow center tube including a side wall and a cavity enclosed by the side wall, and a roll including electrode and separator layers arranged between an outer surface of the hollow center tube and the enclosure. The hollow center tube passes through at least one of the top surface and the bottom surface of the enclosure. A battery heat exchange system includes a first fluid channel including N ports configured to at least one of supply fluid to and receive fluid from at least one end of the hollow center tube of the N hollow battery cells.

公开(公告)号：US20240079555A1

公开(公告)日：2024-03-07

申请号：US17903883

申请日：2022-09-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Insun YOON ,  Biqiong WANG ,  Fang DAI

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/62

CPC classification number: H01M4/136 ,  H01M4/5825 ,  H01M4/625 ,  H01M2004/028

Abstract: A reference electrode assembly includes a porous separator and a continuous electroactive material layer disposed on a surface of the porous separator. The electroactive material layer includes between about 20 wt. % and about 80 wt. % of an electroactive material and between about 20 wt. % and about 80 wt. % of an electrically conductive material. A loading density of the electroactive material is greater than or equal to about 0.01 mAh/cm2 to less than or equal to about 0.1 mAh/cm2. The electroactive material can be selected from the group consisting of: LiFePO4 (LFP), lithium-aluminum alloys, lithium-tin alloys, and combinations thereof; and the electrically conductive material can be selected from the group consisting of: carbon black, carbon nanotubes, graphite, metal nano-micro particles, and combinations thereof. The continuous electroactive material layer is disposed on the surface of the separator using a one-step process selected from spin-coating electrode casting, ink-jet printing, and spray-coating.

公开(公告)号：US20230064146A1

公开(公告)日：2023-03-02

申请号：US17412895

申请日：2021-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shuru CHEN ,  Meinan HE ,  Fang DAI ,  Mark VERBRUGGE ,  Mei CAI

IPC: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M4/58

Abstract: The present disclosure provides an electrolyte system for an electrochemical cell that cycles lithium ions. The electrolyte system may include an aliphatic fluorinated disulfonimide lithium salt in a mixture of organic solvents. The mixture of organic solvents may include a first solvent and a second solvent. The first solvent may include an ether solvent, a carbonate solvent, or a mixture of ether and carbonate solvents. The second solvent may include a fluorinated ether. A molar ratio of the aliphatic fluorinated disulfonimide lithium salt to the first solvent may be greater than or equal to about 1:1.2 to less than or equal to about 1:2. A molar ratio of the first solvent to the second solvent may be greater than or equal to about 1:1 to less than or equal to about 1:4.

公开(公告)号：US20210194054A1

公开(公告)日：2021-06-24

申请号：US16725550

申请日：2019-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang DAI ,  Shuru CHEN ,  Mei CAI

IPC: H01M10/0565 ,  H01M10/0525 ,  C08F122/20

Abstract: The present technology relates to gel electrolytes for using in lithium-ion electrochemical cells and methods of forming the same. For example, the method may include adding one or more gelation reagents to an electrochemical cell including one or more liquid electrolyte precursors. The one or more gelation reagents include one or more initiators and one or more crosslinking agents. Each of the one or more initiators may be one of a thermal initiator and an actinic/electron beam initiator. Each of the one or more crosslinking agents may be one of a tridentate alkane and a tetradentate alkane having one or more substitutes including a terminal group represented by:

公开(公告)号：US20210187903A1

公开(公告)日：2021-06-24

申请号：US16725807

申请日：2019-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang DAI ,  Mei CAI ,  Fan XU ,  Tao WANG

IPC: B32B7/12 ,  B32B15/14 ,  B32B5/02 ,  B32B27/12 ,  B32B19/04 ,  C08G77/04 ,  H01M2/10

Abstract: A thermal insulation component according to various aspects of the present disclosure includes a matrix, a crosslinking precursor, and a crosslinking initiator. The matrix includes a thermal insulation material having a thermal conductivity of less than or equal to about 5 W/mK. The crosslinking precursor is embedded in the matrix. The crosslinking precursor includes at least one of an acrylate functional group or a methacrylate functional group. The crosslinking initiator is embedded in the matrix. The crosslinking initiator is configured to decompose to initiate crosslinking of the crosslinking precursor. In certain aspects, the present disclosure also provides an electronics assembly including an electronic component and a thermal insulation material in thermal communication with the electronic component. In certain aspects, the present disclosure also provides methods of manufacturing the thermal insulation component.