公开(公告)号：US11342545B2

公开(公告)日：2022-05-24

申请号：US16706331

申请日：2019-12-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey D. Cain ,  Andrew C. Bobel ,  Nicholas P. Pieczonka ,  Robert D. Schmidt ,  Anil K. Sachdev ,  Mark W. Verbrugge

IPC: H01M4/04 ,  H01M4/1391 ,  H01M10/0525

Abstract: The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).

公开(公告)号：US20220034235A1

公开(公告)日：2022-02-03

申请号：US16943070

申请日：2020-07-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeremy R. Kirklin ,  Carnell E. Williams ,  Anil K. Sachdev

IPC: F01D25/00 ,  B05D5/08 ,  C22F1/047 ,  C22F1/053 ,  C22F1/057 ,  C22C21/08 ,  C22C21/16 ,  C22C21/10 ,  F02B39/00 ,  F01D5/28

Abstract: A compressor assembly may include a compressor housing and a compressor impeller disposed within the compressor housing. The compressor housing may have an internal aerodynamic surface that defines a circumferentially extending volute, and the compressor impeller may have an external aerodynamic surface that faces toward at least a portion of the internal aerodynamic surface of the compressor housing. A nonstick coating may be formed on the internal aerodynamic surface of the compressor housing or on the external aerodynamic surface of the compressor impeller. The nonstick coating may prevent foreign material introduced into the compressor assembly from collecting on the internal aerodynamic surface of the compressor housing or on the external aerodynamic surface of the compressor impeller.

公开(公告)号：US20210408517A1

公开(公告)日：2021-12-30

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 ,  H01M10/0525 ,  H01M4/46 ,  H01M4/38

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.

公开(公告)号：US20210316996A9

公开(公告)日：2021-10-14

申请号：US16428993

申请日：2019-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mahmoud Abd Elhamid ,  Andrew C. Bobel ,  Anil K. Sachdev ,  Mark W. Verbrugge ,  Nicholas P. Pieczonka ,  James R. Salvador

IPC: C01B33/021 ,  C01B33/037

Abstract: Systems, methods and compositions to produce fine powders are described. These include forming a hypereutectic melt including a target material, a sacrificial-matrix material, and an impurity, rapidly cooling the hypereutectic melt to form a hypereutectic alloy having a first phase and a second phase, annealing the hypereutectic alloy to alter a morphology of the target material to thereby produce target particles, and removing the sacrificial matrix to thereby produce a fine powder of the target particles. The first phase is defined by the target material and the second phase is defined by the sacrificial-matrix material. The sacrificial-matrix material forms a sacrificial matrix having the target material dispersed therethrough.

公开(公告)号：US11011742B2

公开(公告)日：2021-05-18

申请号：US16435760

申请日：2019-06-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K. Sachdev ,  Andrew C. Bobel ,  James R. Salvador ,  Mark W. Verbrugge

IPC: H01M4/134 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/62 ,  H01M4/72 ,  H01M4/66 ,  H01M4/02 ,  H01M4/74

Abstract: Anodes, and battery cells utilizing the same, include silicon particles embedded within a copper matrix, wherein the anode includes 40 at. % to 75 at. % silicon. The anode can include about 21 at. % to about 67 at. % silicon particles. The copper matrix can include pure copper and/or one or more copper-silicon intermetallic phases. The copper matrix can further include one or more of nickel, gold, silver, beryllium, and zinc. The silicon particles embedded in the copper matrix can have an average particle diameter less than 10 μm. The non-surfacial silicon particles embedded in the copper matrix can be at least 99 at. % pure. The anode can be a woven mesh of ribbons or a planar sheet.

公开(公告)号：US10982306B2

公开(公告)日：2021-04-20

申请号：US15797034

申请日：2017-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Anil K. Sachdev ,  Tyson W. Brown

IPC: C22C38/16 ,  B22F3/105 ,  C22C33/02 ,  B33Y10/00 ,  B33Y70/00 ,  B23K26/342 ,  B22F9/08 ,  B23K15/00 ,  C21D6/00 ,  C22C38/12

Abstract: A powder material for an additive manufacturing process and a method of manufacturing a three-dimensional article via an additive manufacturing process. The powder material comprises an iron-based alloy including alloying elements of carbon (C) and copper (Cu). The iron-based alloy may be formulated to achieve a precipitation strengthened microstructure comprising a lath martensite matrix phase and a Cu precipitate phase. The iron-based alloy may have a Cu weight fraction and a nickel (Ni) weight fraction, and the Ni weight fraction may be less than the Cu weight fraction of the iron-based alloy.

公开(公告)号：US20200156134A1

公开(公告)日：2020-05-21

申请号：US16196015

申请日：2018-11-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K. Sachdev ,  John E. Carsley ,  Robert N. Saje

IPC: B21D5/08 ,  C21D1/667

Abstract: A thermal-assisted method deforms a sheet metal assembly having constrained ends. A focus bending area located between the constrained ends is heated. The focus bending area is bent while the sheet metal assembly is within an elevated bending temperature range. A sheet metal assembly may be formed by this method, which includes an outer metal sheet and an inner metal sheet fixed together to form constrained ends. The sheet metal assembly has a bend formed therein between the first and second constrained ends, wherein each metal sheet is bent at the bend with a maximum gap between the inner and outer metal sheets at the bend. The maximum gap is no greater than five times the thickness of one of the inner and outer metal sheets, and the bend has a radius less than three times the thickness of one of the inner and outer sheets.

公开(公告)号：US10465603B1

公开(公告)日：2019-11-05

申请号：US16052029

申请日：2018-08-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K. Sachdev ,  Tyson W. Brown

IPC: F02B39/00 ,  F16C3/02 ,  F02C6/12 ,  F02B39/14 ,  F01D25/12 ,  F04D29/58 ,  F01D5/08 ,  F04D29/52

Abstract: Turbochargers include a compressor comprising a compressor body extending from a compressor back face and a plurality of blades extending from the compressor body, a turbine comprising a turbine body extending from a turbine back face and a plurality of blades extending from the turbine body, and a shaft coupled at a first end to the compressor back face and at a second end to the turbine back face. The shaft includes an internal passage extending from the first end towards the second end in fluid communication with the compressor blades and one or more fans disposed within the internal passage and configured to draw air toward the second end of the shaft. The internal passage of the shaft is in fluid communication with the compressor blades via one or more bleed air passages, which can be biased towards an outer diameter of the compressor body.

公开(公告)号：US10460871B2

公开(公告)日：2019-10-29

申请号：US15290660

申请日：2016-10-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Frederick E. Pinkerton ,  Anil K. Sachdev

IPC: B21C23/00 ,  H01F41/02 ,  B21D22/02 ,  B21C23/06 ,  B21C23/12 ,  B21C23/18 ,  B21C35/02 ,  B21D35/00

Abstract: A method for fabricating a non-planar magnet includes extruding a precursor material including neodymium iron boron crystalline grains into an original anisotropic neodymium iron boron permanent magnet having an original shape, wherein the original anisotropic neodymium iron boron permanent magnet has at least about 90 percent neodymium iron boron magnetic material by volume. The original anisotropic neodymium iron boron permanent magnet is heated to a deformation temperature. The original anisotropic neodymium iron boron permanent magnet is deformed into a reshaped anisotropic neodymium iron boron permanent magnet having a second shape substantially different from the original shape using heated tooling to apply a deformation load to the original anisotropic neodymium iron boron permanent magnet. The original anisotropic neodymium iron boron permanent magnet and the reshaped anisotropic neodymium iron boron permanent magnet each have respective magnetic moments substantially aligned with a respective local surface normal corresponding to the respective magnetic moment.

公开(公告)号：US10435773B2

公开(公告)日：2019-10-08

申请号：US16375099

申请日：2019-04-04

Applicant: GM Global Technology Operations LLC

Inventor： Zhongyi Liu ,  Anil K. Sachdev

IPC: C22C45/08 ,  C22C1/00

Abstract: High-strength, lightweight alloy components, such as automotive components, capable of high temperature performance comprising aluminum, silicon, and iron and/or nickel are provided, along with methods of making such high-strength, lightweight alloy components. A high-energy stream, such as a laser or electron beam, may be selectively directed towards a precursor material to melt a portion of the precursor material in a localized region. The molten precursor material is cooled at a rate of greater than or equal to about 1.0×105 K/second to form a solid high-strength, lightweight alloy component comprising a stable ternary cubic phase having high heat resistance and high strength. The stable ternary phase may be AlxFeySiz, where x ranges from about 4 to about 5 or about 7.2 to about 7.6, y is about 1.5 to about 2.2, and z is about 1. The stable ternary phase may also be Al6Ni3Si.