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公开(公告)号：US20240429401A1
公开(公告)日：2024-12-26
申请号：US18338554
申请日：2023-06-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Anil K. SACHDEV , Diptak BHATTACHARYA
Abstract: A method for manufacturing a current collector for an electrode of a battery cell includes providing a wire mesh current collector including a plurality of first wires and a plurality of second wires that overlap to form a plurality of mesh joints. A diameter of the plurality of first wires and the plurality of second wires is in a range from 4 μm to 100 μm. The method includes coating the wire mesh current collector with a metal coating by immersing the wire mesh current collector in a bath including a metal salt.
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公开(公告)号：US20240191318A1
公开(公告)日：2024-06-13
申请号：US18076693
申请日：2022-12-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Diptak BHATTACHARYA , Hassan GHASSEMI-ARMAKI , Andrew Clay BOBEL , Anil K. SACHDEV
CPC classification number: C21D9/46 , B32B15/011 , C21D8/0205 , C21D8/0236 , C22C38/02 , C22C38/04 , C22C38/06 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008
Abstract: A gradient steel includes a first layer, a second layer near a first surface of the first layer, and a third layer near a second surface of the first layer. The first layer includes a first ferrite phase volume. The second and third layers include a second ferrite phase volume greater than the first ferrite phase volume. The gradient steel may also include a fourth layer near the second layer and a fifth layer near the third layer. The fourth and fifth layers may each include a third ferrite phase volume greater than the second ferrite phase volume. The gradient steel may also include a sixth layer near the fourth layer and a seventh layer near the fifth layer. The sixth and seventh layers may each include a fourth ferrite phase volume greater than the third ferrite phase volume.
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公开(公告)号：US20250158013A1
公开(公告)日：2025-05-15
申请号：US18507783
申请日：2023-11-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Joel G. TONER , Diptak BHATTACHARYA , Caleb REESE , Andrew Clay BOBEL , Anil K. SACHDEV
Abstract: A method for manufacturing an electrode for a battery cells includes supplying an active material layer, a current collector, and a dummy current collector between a first roller and a second roller; using one of the first roller and the second roller, biasing the current collector into the active material layer below an outer surface of the active material layer using the dummy current collector; and removing the dummy current collector from the active material layer.
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公开(公告)号：US20250149532A1
公开(公告)日：2025-05-08
申请号：US18500339
申请日：2023-11-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ming WANG , Mary GILLIAM , Shaomao XU , Diptak BHATTACHARYA , Xiaowei YU
IPC: H01M4/04 , C23C2/00 , C23C2/02 , C23C2/04 , C23C24/10 , H01M4/02 , H01M4/1395 , H01M4/38 , H01M4/66
Abstract: A method for manufacturing an anode electrode includes supplying an anode current collector; coating a first portion of the anode current collector with a precursor coating; not coating a second portion of the anode current collector with the precursor coating; treating the anode current collector with plasma to at least one of decrease lithium wettability of the first portion and to increase lithium wettability of the second portion; and coating the anode current collector with lithium metal to form an anode active material layer.
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公开(公告)号：US20240359548A1
公开(公告)日：2024-10-31
申请号：US18307486
申请日：2023-04-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew Clay BOBEL , Rajan R. CHAKRAVARTY , Amanda HYDE , Varun AGARWAL , Santosh K. SWAMY , Jong-Eun Kim , Manoj MARELLA , Diptak BHATTACHARYA , Chandra Mohan Reddy GAVIREDDY
CPC classification number: B60K1/04 , B62D21/03 , B62D25/2009 , B62D29/007 , B60K2001/0438
Abstract: A shear panel construction includes a patterned upper sheet metal panel including a planar section and having a plurality of upwardly protruding portions defining first strengthening crossbar sections extending upward from the planar section, the planar section of the patterned upper sheet metal panel extends to an edge of the patterned upper sheet metal panel. A patterned lower sheet metal panel is secured to a bottom surface of the patterned upper sheet metal panel, the patterned lower sheet metal panel having a plurality of protruding portions defining second strengthening crossbar sections.
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Patent Agency Ranking
公开(公告)号：US20250135523A1
公开(公告)日：2025-05-01
申请号：US18496602
申请日：2023-10-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew Clay BOBEL , Diptak BHATTACHARYA , Andrew Geoffrey BALDING , William Yu CHEN , Ryan Curtis SEKOL , Derek Frei LAHR
IPC: B21D26/021 , B21D19/14 , B21D39/02 , B21D43/22 , B21D53/04
Abstract: A method of making a cold plate includes stacking three aluminum sheets on top of each other while each of the three aluminum sheets is generally flat. An edge of the three aluminum sheets are secured together. A top one of the aluminum sheets is welded to a middle one of the aluminum sheets at a plurality of first locations and a bottom one of the aluminum sheets is welded to the middle one of the aluminum sheets at a plurality of second locations different than the plurality of first locations. A pressurized medium is supplied between the top one of the aluminum sheets and the bottom one of the aluminum sheets to separate the top one of the aluminum sheets from the bottom one of the aluminum sheets and deform the middle one of the aluminum sheets.
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公开(公告)号：US20240413295A1
公开(公告)日：2024-12-12
申请号：US18330724
申请日：2023-06-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew Clay BOBEL , Diptak BHATTACHARYA , Zhenke TENG , Caleb REESE , Sayed Yousef Sayed NAGY , Anil K. SACHDEV
Abstract: A method for manufacturing a current collector for an electrode of a battery cell includes providing a wire mesh current collector including wires that have a diameter and form mesh junctions; and rolling the wire mesh current collector using a first roller and a second roller, wherein the first roller and the second roller are spaced by a predetermined gap. The predetermined gap is less than 2 times the diameter of the wires of the wire mesh current collector.
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公开(公告)号：US20240234739A9
公开(公告)日：2024-07-11
申请号：US17971326
申请日：2022-10-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Diptak BHATTACHARYA , Caleb REESE , Thomas E. MOYLAN , Andrew Clay BOBEL , Anil K. SACHDEV
IPC: H01M4/66 , H01M4/04 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/662 , H01M4/0471 , H01M4/621 , H01M4/669 , H01M10/0525 , H01M2004/021
Abstract: An electrode assembly includes a current collector, a lithium metal foil, and an alloyed interface that chemically binds the current collector and the lithium metal foil. In certain variations, the alloyed interface includes an intermediate layer disposed between the current collector and the lithium metal foil, a portion of the current collector adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer, and a portion of the lithium metal foil adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer. In other variations, the alloyed interface includes a copper-lithium alloy.
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公开(公告)号：US20240136534A1
公开(公告)日：2024-04-25
申请号：US17971326
申请日：2022-10-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Diptak BHATTACHARYA , Caleb REESE , Thomas E. MOYLAN , Andrew Clay BOBEL , Anil K. SACHDEV
IPC: H01M4/66 , H01M4/04 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/662 , H01M4/0471 , H01M4/621 , H01M4/669 , H01M10/0525 , H01M2004/021
Abstract: An electrode assembly includes a current collector, a lithium metal foil, and an alloyed interface that chemically binds the current collector and the lithium metal foil. In certain variations, the alloyed interface includes an intermediate layer disposed between the current collector and the lithium metal foil, a portion of the current collector adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer, and a portion of the lithium metal foil adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer. In other variations, the alloyed interface includes a copper-lithium alloy.
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10.发明申请公开(公告)号：US20250140775A1
公开(公告)日：2025-05-01
申请号：US18494203
申请日：2023-10-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sayed Youssef Sayed NAGY , Diptak BHATTACHARYA , Caleb REESE , Anil K. SACHDEV
Abstract: A method for manufacturing a battery cell includes coating a three dimensional current collector (3DCC) with a lithiophilic metal oxide layer; and one of laminating the 3DCC with the lithiophilic metal oxide layer between a first lithium metal layer and a second lithium metal layer to create an anode electrode; and coating the 3DCC with the lithiophilic metal oxide layer with molten lithium to create an anode electrode.
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