公开(公告)号：US20240272236A1

公开(公告)日：2024-08-15

申请号：US18361288

申请日：2023-07-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Meiyuan Wu ,  Zhe LI ,  Dave G. Rich ,  Haijing Liu

IPC: G01R31/396 ,  G01R31/3835 ,  H01M10/46 ,  H01M10/48 ,  H01M50/296 ,  H01M50/512

CPC classification number: G01R31/396 ,  G01R31/3835 ,  H01M10/46 ,  H01M10/482 ,  H01M50/296 ,  H01M50/512

Abstract: A bipolar battery system includes N battery cells. Each of the N battery cells comprises M cores each comprising a first current collector, cathode active material, a separator, anode active material, and a second current collector, where M is an integer greater than one. The M cores are connected in parallel by connecting the first current collectors of the M cores in each of the N battery cells together and by connecting the second current collectors of the M cores in each of the N battery cells together. N-1 clad plates are arranged between adjacent ones of the N battery cells and the N battery cells are connected in series by the N-1 clad plates. A voltage sensing system connects to the N-1 tabs, a first terminal, and a second terminal and is configured to determine N voltages across the N battery cells, respectively.

公开(公告)号：US20240079699A1

公开(公告)日：2024-03-07

申请号：US18364203

申请日：2023-08-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Meiyuan WU ,  Qili SU ,  Yong LU ,  Haijing LIU

IPC: H01M50/186 ,  H01M4/66 ,  H01M4/70 ,  H01M10/0585 ,  H01M50/112 ,  H01M50/148 ,  H01M50/174 ,  H01M50/193 ,  H01M50/198 ,  H01M50/30 ,  H01M50/548

CPC classification number: H01M50/186 ,  H01M4/661 ,  H01M4/667 ,  H01M4/70 ,  H01M10/0585 ,  H01M50/112 ,  H01M50/148 ,  H01M50/174 ,  H01M50/193 ,  H01M50/198 ,  H01M50/30 ,  H01M50/548 ,  H01M2004/029

Abstract: A bipolar battery includes N battery cores each comprising a cathode electrode, an anode electrode, and a separator, where N is an integer greater than one. N−1 bipolar plates include a first layer made of a first material, a second layer made of a second material, a center portion, and first and second sides extending transversely relative to the center portion. A battery enclosure including a cover and a lower portion including sides defining a cavity. The N−1 bipolar plates are arranged in the cavity between adjacent ones of the N battery cores and the N battery cores are connected in series by the N−1 bipolar plates. The first and second sides of the N−1 bipolar plates are one of inserted into “L”-shaped slots in the sides of the lower portion, and molded into the sides of the lower portion.

公开(公告)号：US20240079655A1

公开(公告)日：2024-03-07

申请号：US17961804

申请日：2022-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Meiyuan WU ,  Haijing LIU ,  Dave G. RICH

IPC: H01M10/0585 ,  H01M4/66 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0566 ,  H01M50/148 ,  H01M50/172 ,  H01M50/186 ,  H01M50/193 ,  H01M50/30 ,  H01M50/417 ,  H01M50/431 ,  H01M50/449 ,  H01M50/533 ,  H01M50/534 ,  H01M50/548

CPC classification number: H01M10/0585 ,  H01M4/661 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/0566 ,  H01M50/148 ,  H01M50/172 ,  H01M50/186 ,  H01M50/193 ,  H01M50/30 ,  H01M50/417 ,  H01M50/431 ,  H01M50/449 ,  H01M50/533 ,  H01M50/534 ,  H01M50/548 ,  H01M2300/0025 ,  H01M2300/0071 ,  H01M2300/0082

Abstract: A bipolar solid-state battery includes N solid-state battery cells. Each of the N solid-state battery cells includes M solid-state cores each comprising a first current collector, cathode active material, a separator, anode active material, and a second current collector, where N and M are integers greater than one. The M solid-state cores are connected in parallel by connecting the first current collectors of the M solid-state cores in each of the N solid-state battery cells together and by connecting the second current collectors of the M solid-state cores in each of the N solid-state battery cells together. N−1 clad plates including a first side made of a first material and a second side made of a second material. The N−1 clad plates are arranged between adjacent ones of the N solid-state battery cells and the N solid-state battery cells are connected in series by the N−1 clad plates.

公开(公告)号：US20230282881A1

公开(公告)日：2023-09-07

申请号：US17884335

申请日：2022-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bradley R. FRIEBERG ,  Zhe LI ,  Yong LU

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M50/46

CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M50/46 ,  H01M2300/0082

Abstract: A polymer gel electrolyte for an electrochemical cell that cycles lithium ions is provided. The polymer gel electrolyte includes a polymeric blend comprising polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and polyvinylidene fluoride (PVDF), wherein a mass ratio of PVDF-HFP to PVDF is greater than or equal to about 1.5:1 to less than or equal to about 19:1 in the polymeric blend. Further, one or more plasticizers are included selected from the group consisting of: ethylene carbonate (EC), diethylene carbonate (DEC), vinyl ethylene carbonate (VEC), dimethylene carbonate (DMC), ethylmethylene carbonate (EMC), propylene carbonate (PC), gamma butyrolactone (GBL), diethylene glycol dimethyl ether (Diglyme), triethylene glycol dimethyl ether (Triglyme), tetraethylene glycol dimethyl ether (Tetraglyme), Triethyl Phosphate (TEP), 1-butyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (BMIM-TFSI), 1-Ethyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (EMI-TFSI), alkyl pyrrolidinium bis(trifluoromethanesulfonyl)imide (PY-TFSI), piperidinium bis(trifluoromethanesulfonyl)imide (PP-TFSI), N-alkyl-N-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYRA-TFSI), and combinations thereof. The polymer gel electrolyte also includes one or more lithium salts.

公开(公告)号：US20230268547A1

公开(公告)日：2023-08-24

申请号：US17828898

申请日：2022-05-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Xiaochao QUE ,  Haijing LIU

IPC: H01M10/056 ,  H01M10/0525

CPC classification number: H01M10/056 ,  H01M10/0525 ,  H01M2220/20

Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions, where the electrochemical cell includes an electrode, a solid-state electrolyte layer, and a solid-state interlayer disposed between the electrode and the solid-state electrolyte layer. The solid-state interlayer includes a plurality of solid-state electrolyte particles. In certain instances, the solid-state interlayer includes a plurality of through-holes dispersed therewithin. The through-holes have an average diameter between about 0.05 to about 100 micrometers. The solid-state interlay covers between about 50% and about 100% of a total surface area of the electrode. In each variation, solid-state interlayer has a thickness greater than or equal to about 0.1 to less than or equal to about 8 micrometers, and the electrochemical cell may include a polymeric gel electrolyte that at least partially fills voids between solid-state electroactive particle and solid-state electrolyte particles.

公开(公告)号：US20230246310A1

公开(公告)日：2023-08-03

申请号：US17696567

申请日：2022-03-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe LI ,  Mengyan HOU ,  Qili SU ,  Meiyuan WU ,  Xiaochao QUE ,  Haijing LIU ,  Si CHEN

IPC: H01M50/543 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/46 ,  H01M50/449 ,  H01M4/131 ,  H01M4/583

CPC classification number: H01M50/543 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/46 ,  H01M50/449 ,  H01M4/131 ,  H01M4/583 ,  H01M2300/0082 ,  H01M2004/029

Abstract: A high-power gel-assisted battery stack that cycles lithium ions is provided with two terminal electrodes having opposite polarities and at least one bipolar electrode assembly disposed therebetween. A first electrode is disposed on a first side of a bipolar current collector and a second electrode with an opposite polarity to the first electrode is disposed on a second side of the bipolar current collector. Each electrode includes a porous layer having an electroactive material and a solid-state electrolyte disposed in a polymeric binder. A polymer gel electrolyte is distributed in pores of the porous. The stack also includes at least two free-standing gel separator layers each being disposed between the at least one bipolar electrode assembly and terminal electrodes. Each respective free-standing gel separator layer comprises polyacrylonitrile (PAN) and an electrolyte distributed therein. The high-power gel-assisted battery stack has a maximum voltage rating of ≥about 12V.

公开(公告)号：US20230074112A1

公开(公告)日：2023-03-09

申请号：US17710213

申请日：2022-03-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Yong LU ,  Haijing LIU

IPC: H01M10/0565 ,  H01M10/0525

Abstract: The present disclosure provides a polymeric gel electrolyte for an electrochemical cell that cycles lithium ions. The polymeric gel electrolyte includes greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a non-lithium salt. The non-lithium salt includes a non-lithium cation having an ion radius that is greater than or equal to about 80% to less than or equal to about 250% of an ion radius of a lithium ion. The polymeric gel electrolyte further includes greater than or equal to about 50 wt. % to less than or equal to about 99.9 wt. % of a non-volatile gel. The non-volatile gel includes greater than or equal to 0 wt. % to less than or equal to about 50 wt. % of a polymeric host and greater than or equal to about 5 wt. % to less than or equal to about 100 wt. % of a liquid electrolyte.

公开(公告)号：US20230025830A1

公开(公告)日：2023-01-26

申请号：US17697135

申请日：2022-03-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Mengyan HOU ,  Zhe LI ,  Haijing LIU

IPC: H01M10/0585 ,  H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0565

Abstract: The present disclosure provides a method for forming a solid-state battery. The method includes stacking two or more cell units, where each cell unit is formed by substantially aligning a first electrode and a second electrode, where the first electrode includes one or more first electroactive material layers disposed on or adjacent to one or more surfaces of a releasable substrate and the second electrode includes one or more second electroactive material layers disposed on or adjacent to one or more surfaces of a current collector; disposing an electrolyte layer between exposed surfaces of the first electrode and the second electrode; and removing the releasable substrate to form the cell unit.

公开(公告)号：US20220294038A1

公开(公告)日：2022-09-15

申请号：US17752180

申请日：2022-05-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jing GAO ,  Brian J. KOCH ,  Zhe LI ,  Alfred ZHANG ,  Gayatri V. DADHEECH

IPC: H01M10/48 ,  B05D1/00

Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.

公开(公告)号：US20220285748A1

公开(公告)日：2022-09-08

申请号：US17752185

申请日：2022-05-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jing GAO ,  Brian J. KOCH ,  Zhe LI ,  Alfred ZHANG ,  Gayatri V. DADHEECH

IPC: H01M10/48 ,  B05D1/00

Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.