公开(公告)号：US11340299B2

公开(公告)日：2022-05-24

申请号：US16110618

申请日：2018-08-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Wentian Gu ,  Zhiqiang Yu

IPC: H02J7/00 ,  G01R31/3835 ,  B60L50/64 ,  H01M10/04 ,  H01G11/14 ,  H01G11/28 ,  H01M16/00 ,  B60L50/40 ,  H01G11/16 ,  H01G11/08 ,  B60L58/10 ,  H01G11/76 ,  B60L3/12 ,  H01M10/48 ,  G01R31/36 ,  B60L3/00 ,  H01G11/22 ,  H01M10/0525 ,  H01M10/42 ,  H01G11/34 ,  H01G11/46 ,  H01G11/48

Abstract: A battery and supercapacitor system of a vehicle includes a lithium ion battery (LIB) having first and second electrodes, and a supercapacitor having third and fourth electrodes. A first reference electrode is disposed between the first and second electrodes and is configured to measure a first potential at a location between the first and second electrodes. A second reference electrode is disposed between the third and fourth electrodes and is configured to measure a second potential at a location between the third and fourth electrodes. The first electrode may be connected to the third electrode, and the second electrode may be connected to the fourth electrode. The first and second reference electrodes may not be connected to any of the first, second, third, or fourth electrodes.

公开(公告)号：US11196097B2

公开(公告)日：2021-12-07

申请号：US16110644

申请日：2018-08-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wentian Gu ,  Haijing Liu ,  Mark W. Verbrugge ,  Zhiqiang Yu

IPC: F02N11/08 ,  H01G11/22 ,  H01G11/54 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/485 ,  H01M4/505 ,  B60L50/60 ,  H01G11/14 ,  H01G11/08 ,  H01G11/32

Abstract: A battery and supercapacitor system of a vehicle includes a lithium ion battery (LIB) disposed within a housing. The LIB includes: an electrolyte including lithium; and first and second electrodes disposed in the electrolyte. A supercapacitor is disposed within the housing and includes: the electrolyte; and third and fourth electrodes disposed in the electrolyte.

公开(公告)号：US20190157659A1

公开(公告)日：2019-05-23

申请号：US16098457

申请日：2016-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Zhiqiang Yu ,  Dewen Kong ,  Meiyuan Wu

IPC: H01M4/139 ,  H01M4/36 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/0585 ,  H01G11/06 ,  H01G11/62 ,  H01G11/50 ,  H01G11/28 ,  H01G11/86

Abstract: At least one of the anode and cathode of a lithium-ion processing electrochemical cell are prepared with a layer of mixed partides of both active lithium battery electrode materials and lithium ion adsorbing capacitor materials, or with co-extensive, contiguous layers of battery electrode particles in one layer and capacitor particles in the adjoining layer. The proportions of active battery electrode particles and active capacitor particles in one or both of the electrodes are predetermined to provide specified energy density (Wh/kg) and power density (W/kg) properties of the cell for its intended application.

公开(公告)号：US20190067729A1

公开(公告)日：2019-02-28

申请号：US15689059

申请日：2017-08-29

Applicant: GM Global Technology Operations LLC

Inventor： Zhiqiang Yu ,  Meiyuan Wu ,  Xiaochao Que ,  Fei Pan ,  Sherman H. Zeng

IPC: H01M10/052 ,  H01M2/02 ,  H01M4/62

Abstract: The present disclosure provides an electrochemical device that may include a stack having at least one electrochemical cell having a first electrode, a second electrode, a porous separator, and an electrolyte liquid disposed in the porous separator and optionally disposed in the first electrode, the second electrode, or both the first electrode and the second electrode. The stack has a first volume of electrolyte liquid. The electrochemical device also has an integrated storage region that stores a second volume of electrolyte liquid and is in fluid communication with the plurality of electrochemical cells and is configured to transfer the electrolyte liquid into the plurality of electrochemical cells, wherein the second volume of electrolyte liquid is at least about 3% of the first volume. Methods of increasing lifetime of the electrochemical device are also provided.

公开(公告)号：US20190013552A1

公开(公告)日：2019-01-10

申请号：US15644444

申请日：2017-07-07

Applicant: GM Global Technology Operations LLC

Inventor： Qiang Wu ,  Zhiqiang Yu ,  Haijing Liu ,  Honggu Pan ,  Ion C. Halalay

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569 ,  H01M10/0568

CPC classification number: H01M10/4235 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/004

Abstract: Electrochemical cells that cycle lithium ions and methods for suppressing or minimizing dendrite formation are provided. The electrochemical cells include a positive electrode, a negative electrode, and a separator sandwiched therebetween. The positive and negative electrodes and separator may each include an electrolyte system comprising one or more lithium salts, one or more solvents, and one or more complexing agents. The one or more complexing agents binds to metal contaminants found within the electrochemical cell to form metal ion complex compounds that minimize or suppress formation of dendrite protrusions on the negative electrode at least by increasing the horizontal area (e.g., decreasing the height) of any dendrite formation.

公开(公告)号：US20180048040A1

公开(公告)日：2018-02-15

申请号：US15560206

申请日：2015-03-25

Applicant: Haijing LIU ,  GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Xiaohong Q. Gayden ,  Zhiqiang Yu

IPC: H01M12/00 ,  H01M4/66 ,  H01G11/08 ,  H01G11/06 ,  H01G11/46 ,  H01G11/86 ,  H01G11/58 ,  H01G11/66 ,  H01G11/34 ,  H01M4/04 ,  H01G11/24

CPC classification number: H01M12/02 ,  H01G11/06 ,  H01G11/08 ,  H01G11/24 ,  H01G11/34 ,  H01G11/46 ,  H01G11/58 ,  H01G11/62 ,  H01G11/66 ,  H01G11/72 ,  H01G11/78 ,  H01G11/86 ,  H01M2/024 ,  H01M4/0404 ,  H01M4/485 ,  H01M4/505 ,  H01M4/661 ,  H01M10/0459 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0583 ,  H01M10/4264 ,  H01M12/005 ,  H01M16/00 ,  H01M2220/20 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: Atmospheric plasma spray devices and methods are used in the making of the electrodes for both a lithium-ion battery and a lithium-ion utilizing capacitor structure, which are to be placed in a common container and infiltrated with a common lithium-ion transporting, liquid electrolyte. The lithium-ion-utilizing capacitor and lithium-ion cell battery are combined such that the respective electrodes may be electrically connected, either in series or parallel connection for in energy storage and management in an automotive vehicle or other electrical power supply application.

公开(公告)号：US11427914B2

公开(公告)日：2022-08-30

申请号：US16783240

申请日：2020-02-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Zhiqiang Yu ,  Xiaochao Que

IPC: H01M4/66 ,  C23C18/12 ,  H01M4/04 ,  C23C22/00

Abstract: A copper foil, intended for use as a current collector in a lithium-containing electrode for a lithium-based electrochemical cell, is subjected to a series of chemical oxidation and reduction processing steps to form a field of integral copper wires extending outwardly from the surfaces of the current collector (and from the copper content of the foil) to be coated with a resin-bonded porous layer of particles of active electrode material. The copper wires serve to anchor thicker layers of porous electrode material and enhance liquid electrolyte contact with the electrode particles and the current collector to improve the energy output of the cell and its useful life.

公开(公告)号：US11302916B2

公开(公告)日：2022-04-12

申请号：US16491488

申请日：2017-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Lu ,  Michael P. Balogh ,  Zhiqiang Yu ,  Haijing Liu

IPC: H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/131

Abstract: An electrolyte can be pretreated by contacting with an oxide species (e.g., SiO2, SiOx, where 1≤x≤2, TiO2). The electrolyte comprises LiPF6 and a carbonate solvent. A reaction occurs to form a pretreated electrolyte comprising a compound selected from the group consisting of: MaPx′OyFz, MaPx′OyFzCnHm, and combinations thereof, where when P in the formula is normalized to 1 so that x′ is equal to about 1, 0

公开(公告)号：US11264606B2

公开(公告)日：2022-03-01

申请号：US16491460

申请日：2017-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Lu ,  Michael P. Balogh ,  Zhiqiang Yu ,  Haijing Liu ,  Daad B. Haddad

IPC: H01M4/13915 ,  H01M4/1315 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/02

Abstract: Methods of pretreating an electroactive material comprising lithium titanate oxide (LTO) include contacting a surface of the electroactive material with a pretreatment composition. In one variation, the pretreatment composition includes a salt of lithium fluoride salt selected from the group consisting of: lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), and combinations thereof, and a solvent. In another variation, the pretreatment composition includes an organophosphorus compound. In this manner, a protective surface coating forms on the surface of the electroactive material. The protective surface coating comprises fluorine, oxygen, phosphorus or boron, as well as optional elements such as carbon, hydrogen, and listed metals, and combinations thereof.

公开(公告)号：US11145890B2

公开(公告)日：2021-10-12

申请号：US16086282

申请日：2016-03-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi Liu ,  Zhiqiang Yu

IPC: H01M10/0525 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0563 ,  H01M4/02

Abstract: A lithium ion battery including an electrolyte and a lithium titanate negative electrode is provided. The lithium titanate negative electrode includes structures of a lithium titanate core and a conformal layer surrounding each lithium titanate core. The conformal layer either includes titanium oxide with substantially no lithium or has a concentration of lithium ranging from a lower concentration at a surface portion of the layer to a higher concentration at an interior portion of the layer adjacent to the lithium titanate core. A method of preparing the lithium titanate structures and a method of preparing an electrode for a lithium ion battery, wherein the electrode includes lithium titanate structures, are also provided.