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公开(公告)号：US11769884B2
公开(公告)日：2023-09-26
申请号：US17586042
申请日：2022-01-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. Sachdev , Thomas E. Moylan
CPC classification number: H01M4/742 , H01M4/0419 , H01M4/0435 , H01M4/669
Abstract: An electrode structure for a battery includes a middle layer made of an electrically conductive perforated mesh having a top surface, a bottom surface, a plurality of interconnected electrically conductive segments and a plurality of perforations among adjacent ones of the interconnected segments. A top layer of an electrode material is disposed on the top surface, and a bottom layer of the electrode material is disposed on the bottom surface, such that the top and bottom layers are disposed in physical contact with each other through the perforations in the middle layer. A method of manufacturing the electrode structure includes providing the layer of perforated mesh, applying the top and bottom layers of electrode material to the top and bottom surfaces, and curing the top and bottom layers of electrode material using one or more of heat, electromagnetic radiation and convection to produce a layer of cured electrode structure.
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公开(公告)号：US20230238541A1
公开(公告)日：2023-07-27
申请号：US17586042
申请日：2022-01-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. Sachdev , Thomas E. Moylan
CPC classification number: H01M4/742 , H01M4/0435 , H01M4/0419 , H01M4/669
Abstract: An electrode structure for a battery includes a middle layer made of an electrically conductive perforated mesh having a top surface, a bottom surface, a plurality of interconnected electrically conductive segments and a plurality of perforations among adjacent ones of the interconnected segments. A top layer of an electrode material is disposed on the top surface, and a bottom layer of the electrode material is disposed on the bottom surface, such that the top and bottom layers are disposed in physical contact with each other through the perforations in the middle layer. A method of manufacturing the electrode structure includes providing the layer of perforated mesh, applying the top and bottom layers of electrode material to the top and bottom surfaces, and curing the top and bottom layers of electrode material using one or more of heat, electromagnetic radiation and convection to produce a layer of cured electrode structure.
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93.发明公开公开(公告)号：US20230211406A1
公开(公告)日：2023-07-06
申请号：US17568047
申请日：2022-01-04
Applicant: GM Global Technology Operations LLC
Inventor： Steven L. Burkholder , Thomas W. Gustafson , Qigui Wang , Anil K. Sachdev
Abstract: A system and method of increasing a cooling rate of a metal sand casting during solidification. The system includes a 3-D printed manufactured sand mold defining a mold cavity, a coolant inlet port extending into the manufactured sand mold, a myriad of coolant passageways surrounding a portion of the mold cavity, and a coolant outlet port in fluid communication with the coolant passageways. The system further includes a coolant vapor extraction system having a collection manifold in fluid connection with the outlet port of the sand mold. A molten metal is poured into the mold cavity and a liquid coolant is introduced into the sand mold. The liquid coolant changes state into a gas phase as it permeates through the sand mold, thereby increasing the cooling rate of the casting. The liquid coolant may be that of a liquid nitrogen.
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公开(公告)号：US11577331B2
公开(公告)日：2023-02-14
申请号：US17134986
申请日：2020-12-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lokesh Choudhary , Qigui Wang , Tiruttani Munikamal , David A. Wulbrecht , Gregory Melekian , Anil K. Sachdev
Abstract: A method of manufacturing a threaded hole in a workpiece includes providing the workpiece having a region with a hole. The method also includes cutting a threading for the hole. Furthermore, the method includes, independent of cutting the threading, densifying the region proximate the hole to reduce material porosity in the region.
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公开(公告)号：US11548060B2
公开(公告)日：2023-01-10
申请号：US17024919
申请日：2020-09-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dale A. Gerard , Qigui Wang , Tyson W. Brown , Ali Shabbir , Anil K. Sachdev
Abstract: A high heat-absorption casting core for manufacturing a cast component includes a core body. The core body has at least a portion thereof defined by metal powder. The metal powder is configured to absorb heat energy from the cast component during cooling of the component and solidification thereof. The core body may be additionally defined by a sand fraction in contact with the metal powder fraction. A system and a method for manufacturing a cast component using the high heat-absorption casting core are also envisioned.
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Patent Agency Ranking
公开(公告)号：US20220123279A1
公开(公告)日：2022-04-21
申请号：US17071118
申请日：2020-10-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Leng Mao , Jeffrey D. Cain , Anil K. Sachdev , Andrew C. Bobel
Abstract: Self-lithiating battery cells include an anode having a current collector, a host material applied to the current collector comprising graphite, silicon particles, and/or SiOx particles, wherein x is less than or equal to 2, and lithium foil in contact with the current collector. Methods for pre-lithiating battery cells include charging and discharging the battery cell to deplete the lithium foil by causing lithium ions to migrate from the lithium foil to the cathode and/or the anode. The methods can further include subsequently iteratively charging and discharging the battery while the depleted lithium foil remains within the battery cell. The lithium foil can be pure elemental lithium metal or a lithium magnesium alloy. The lithium foil can include 10 wt. % to 99 wt. % lithium and 1 wt. % to 90 wt. % magnesium. The anode current collector can include perforations.
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公开(公告)号：US20220097127A1
公开(公告)日：2022-03-31
申请号：US17036335
申请日：2020-09-29
Applicant: GM Global Technology Operations LLC
Inventor： David D. Goettsch , Garrold A. DeGrace , Gregory T. Naismith , Madhusudhan Raju Nannapuraju , Anil K. Sachdev
IPC: B22D17/22
Abstract: A modular casting mold for casting an automotive component includes a plurality of die portions defining a mold cavity corresponding to an automotive component, at least one of the plurality of die portions is an active die portion adapted to control the temperature of the modular casting mold throughout the casting process and including features for ejecting an automotive component cast within the modular casting mold, and the modular casting mold adapted to be attached to another modular casting mold for casting a single automotive component.
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公开(公告)号：US11252840B2
公开(公告)日：2022-02-15
申请号：US16575348
申请日：2019-09-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anil K. Sachdev , Chih-Hung Yen , Venkata Prasad Atluri
Abstract: A cooling assembly according to various aspects of the present disclosure includes a housing, an electronic component, a dielectric coolant, and a cover. The housing includes an interior compartment having a basin region in which the electronic component and the coolant are disposed. The coolant undergoes phase change between a liquid state and a gas state. The coolant is in direct contact with the electronic component in the liquid state. The cover component extends transversely through the interior compartment and is coupled to the body. The cover component is disposed in a direction with respect to the basin region. The cover component at least partially defines a port in fluid communication with the basin region. The cover component is configured to permit flow therethrough of the dielectric coolant in the gas state in at least the direction.
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公开(公告)号：US11132986B2
公开(公告)日：2021-09-28
申请号：US16213135
申请日：2018-12-07
Applicant: GM Global Technology Operations LLC
Inventor： Anil K. Sachdev , Raja K. Mishra , Jon T. Carter , Tyson W. Brown , Blair E. Carlson , David R. Sigler , Robert N. Saje , Matthew P. Simonin
IPC: B32B7/05 , G10K11/168 , B32B7/02 , B32B15/04 , B32B15/18 , B32B15/20 , B32B27/32 , B21D26/021 , B21D35/00 , B32B15/01 , B32B27/08 , B60R7/06 , B60R13/08 , B62D21/00 , B62D25/04 , B62D25/10 , F16M13/02 , B60R13/02 , B32B37/00
Abstract: A panel assembly is formed by a plurality of bonds between two sheet materials in a face to face relationship to form a preform. The plurality of bonds define a closed perimeter region between the two sheet materials and an open perimeter region between the two sheet materials. The preform may be formed into a predefined shape. Pressurized fluid is applied through an inlet into the open perimeter region to expand the preform. The pressurized fluid expands the open perimeter region such that the two sheet materials expand in an opposing direction, thereby defining an expanded open perimeter region. The closed perimeter region between the two sheet materials remains vacant of the pressurized fluid such that the closed perimeter region is not expanded. The expanded open perimeter region is filled with a filler material for improving a performance characteristic of the panel assembly, e.g., strength, sound absorption, or stiffness.
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公开(公告)号：US10711330B2
公开(公告)日：2020-07-14
申请号：US15792440
申请日：2017-10-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yang Guo , Ming Liu , Anil K. Sachdev
IPC: C22C23/02
Abstract: Magnesium-aluminum corrosion-resistant alloys are provided and include magnesium, aluminum, germanium, small amounts of cathodic reaction active site impurities such as iron, copper, nickel, and cobalt, manganese, and optionally tin. The alloy can include up to about 0.75% germanium, at least about 2.5% aluminum, up to about 2.25% tin, at most 0.0055% iron impurities, and at most 0.125% silicon impurities. The ratio of germanium to iron can be less than 150. The ratio of manganese to iron can be at least 75. The alloy can comprise one or more intermetallic complexes, including magnesium-germanium, magnesium-aluminum, and aluminum-manganese intermetallic complexes.
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