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公开(公告)号：US20140290894A1
公开(公告)日：2014-10-02
申请号：US14099474
申请日：2013-12-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yiqing Chen , Aihua A. Luo , Anil K. Sachdev
CPC classification number: B22D19/0081 , B22D19/16
Abstract: Methods of forming bi-metallic castings are provided. In one method, a metal preform of a desired base shape is provided defining a substrate surface. A natural oxide layer is removed from the substrate surface, yielding a cleaned metal preform. The method includes forming a thin metallic film on at least a portion of the substrate surface of the cleaned metal preform, and metallurgically bonding the portion of the metal preform having the metallic film with an overcast metal to form a bi-metallic casting. The metallic film promotes a metallurgical bond between the metal preform and the overcast metal. In one aspect, the metal preform may comprise aluminum (Al) and the metallic film may comprise zinc (Zn).
Abstract translation: 提供了形成双金属铸件的方法。 在一种方法中，提供限定衬底表面的所需基底形状的金属预制件。 从衬底表面去除自然氧化物层，产生清洁的金属预制件。 该方法包括在清洁的金属预制件的基材表面的至少一部分上形成薄金属膜，并且将具有金属膜的金属预制件的部分与阴极金属冶金结合以形成双金属铸件。 金属膜促进金属预型件和阴极金属之间的冶金结合。 一方面，金属预型件可以包括铝（Al），金属膜可以包括锌（Zn）。
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公开(公告)号：US12142751B2
公开(公告)日：2024-11-12
申请号：US16912150
申请日：2020-06-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew C. Bobel , Anil K. Sachdev , Jeffrey D. Cain , Leng Mao
IPC: H01M4/04 , H01M4/38 , H01M4/46 , H01M10/0525
Abstract: A method for making a pre-lithiated electrode for a lithium ion battery cell, a method for making a battery with a pre-lithiated electrode, and an electric vehicle with a pre-lithiated electrode are provided. An exemplary method for making a pre-lithiated electrode for a lithium ion battery cell includes electrochemically connecting a magnesium-lithium alloy to the electrode. Further, the method includes pre-lithiating the electrode by transferring lithium ions from the magnesium-lithium alloy to the electrode. Also, the method includes electrochemically disconnecting the magnesium-lithium alloy from the electrode.
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公开(公告)号：US20240136507A1
公开(公告)日：2024-04-25
申请号：US17971301
申请日：2022-10-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jeffrey David CAIN , Nicholas Paul William PIECZONKA , Anil K. Sachdev
CPC classification number: H01M4/366 , H01M4/0459 , H01M4/58 , H01M2004/021
Abstract: An electroactive material for an electrochemical cell that cycles lithium ions is provided. The electroactive material includes a plurality of atomic layers and a plurality of cations disposed between the atomic layers. The plurality of atomic layers includes an atom selected from the group consisting of: silicon, germanium, boron, and combinations thereof. The plurality of cations is selected from the group consisting of: calcium, magnesium, zinc, copper, nickel, potassium, sodium, and combinations thereof. A ratio of the cations to atoms that define the atomic layer may be less than about 1:2.
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公开(公告)号：US11936239B2
公开(公告)日：2024-03-19
申请号：US17116661
申请日：2020-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Anil K. Sachdev , Jian Yao , Anthony M. Coppola , Thomas W. Nehl , Chengwu Duan
CPC classification number: H02K1/02 , H01F1/032 , H01F1/053 , H01F41/0253 , H01F41/0266 , H02K1/2793 , H02K1/32 , H02K15/03 , H02K21/24
Abstract: A bi-material permanent magnet for an electric machine includes a core including a first magnetic material and a shell portion located on the core and made of a second magnetic material. The first magnetic material comprises a magnet material with an energy less than 20 Mega Gauss Oersteds (MGOe). The second magnetic material comprises a magnet material with an energy greater than 30 MGOe.
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公开(公告)号：US11870089B2
公开(公告)日：2024-01-09
申请号：US17695070
申请日：2022-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Andrew C. Bobel , Anil K. Sachdev , Patrick H. Clark , Pooja Suresh , Ran Wu , Jermain E. Onye , William Y. Chen , Li Yang , Chao Hu , Yunshan Liu , Kuo Sun
IPC: H01M50/242 , H01M50/209 , H01M10/658
CPC classification number: H01M50/242 , H01M10/658 , H01M50/209
Abstract: A battery cell pack has a plurality of battery cells that are assembled into a prismatic frame, with deformable separators interposed to accommodate elastic and plastic deformation caused by cyclic and acyclic expansion and contraction thereof during charging and discharging over the life of the battery cell pack. The battery cells are arranged in a horizontal stack within the prismatic frame, and the deformable separators are interposed between subsets of the battery cells. The deformable separators exert compressive force on the subsets of the battery cells along a longitudinal axis that is defined by the horizontal stack. The compressive force exerted by the deformable separators is at least a minimum force over a service life of the battery cell pack.
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Patent Agency Ranking
公开(公告)号：US20230365019A1
公开(公告)日：2023-11-16
申请号：US17741555
申请日：2022-05-11
Applicant: GM Global Technology Operations LLC
Inventor： Aravind Gangumalla , Anil K. Sachdev , Anil Bika , Nathan Thompson , Ramesh Sethu
Abstract: A method for using idle computing power of an electric vehicle includes receiving computing tasks while the electric vehicle is electrically connected to a charging infrastructure, accepting to perform the computing tasks while the electric vehicle is electrically connected to the charging infrastructure, and in response to accepting to perform the computing tasks, performing the computing tasks while the electric vehicle is electrically connected to the charging infrastructure.
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公开(公告)号：US20230291288A1
公开(公告)日：2023-09-14
申请号：US17648568
申请日：2022-01-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Thomas W. Nehl , Huaxin Li , Anil K. Sachdev
Abstract: A rotor for an electric machine includes strengthened structural elements effected through surface alloying and heating via an induction heating fixture. A rotor includes laminations formed to have internal cavities and structural members adjacent the cavities. A number of the laminations are stacked to form a lamination stack. An alloying material is applied to the lamination stack at the structural members. The lamination stack is placed in a fixture so that an inductor extends along the structural members and cooling elements extend through the cavities. A current is applied to the inductor to heat the structural members, alloying the alloying material into the structural members.
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公开(公告)号：US11735744B2
公开(公告)日：2023-08-22
申请号：US17242576
申请日：2021-04-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. Sachdev , Leng Mao , Louis G. Hector, Jr. , Andrew C. Bobel
IPC: H01M4/74 , H01M4/38 , H01M4/134 , H01M50/531 , H01M4/66 , H01M4/04 , H01M4/1395 , H01M10/052 , H01M4/02
CPC classification number: H01M4/747 , H01M4/0404 , H01M4/134 , H01M4/1395 , H01M4/382 , H01M4/662 , H01M4/667 , H01M4/669 , H01M10/052 , H01M50/531 , H01M2004/021
Abstract: A battery electrode, and a method for fabricating the battery electrode are described. The battery electrode includes a current collector having a woven mesh planar sheet that is composed of metallic strands. The metallic strands define a multiplicity of interstitial spaces, and the woven mesh planar sheet includes a first surface and a second surface. An active material including lithium is embedded in the interstitial spaces of a first portion of the woven mesh planar sheet, and an electrical connection tab arranged on a second portion of the woven mesh planar sheet.
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公开(公告)号：US11708629B2
公开(公告)日：2023-07-25
申请号：US17735228
申请日：2022-05-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Arianna T. Morales , Raja K. Mishra , Anil K. Sachdev
Abstract: An alloy composition is provided. The alloy composition includes silicon (Si) at a concentration of greater than or equal to about 0.55 wt. % to less than or equal to about 0.75 wt. %, magnesium (Mg) at a concentration of greater than or equal to about 0.55 wt. % to less than or equal to about 0.75 wt. %, chromium (Cr) at a concentration of greater than or equal to about 0.15 wt. % to less than or equal to about 0.3 wt. %, and a balance of the alloy composition being aluminum (Al). The alloy composition has an intermetallic phase content of less than or equal to about 3 wt. %. Methods of preparing the alloy composition and of processing the alloy composition are also provided.
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公开(公告)号：US11642712B1
公开(公告)日：2023-05-09
申请号：US17679254
申请日：2022-02-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. Sachdev , Louis G. Hector, Jr. , Arianna T. Morales , Andrew Clay Bobel
CPC classification number: B21C23/085 , B21D53/88 , B21C35/026 , B21C37/06 , B21C37/158
Abstract: The present disclosure describes a method of manufacturing a vehicle body structure component. The method includes extruding a tube to include at least one reinforced region extending along a length of the tube. The tube has a first thickness in the at least one reinforced region and a second thickness in other regions of the tube. The first thickness is greater than the second thickness. The method further includes cutting a blank from the tube such that the blank includes at least a portion of the at least one reinforced region and forming the blank into a desired shape of the component.
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