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公开(公告)号：US20250162414A1
公开(公告)日：2025-05-22
申请号：US18514655
申请日：2023-11-20
Applicant: Caterpillar Inc.
Inventor： Jacob Dean Randall , Dennis Christopher Agee
Abstract: Provided herein is a system including a resistor grid comprising a plurality of resistor elements, the resistor grid electrically coupled to a motor of an electric drive machine; a temperature sensor arranged to measure a temperature of at least one of the plurality of resistor elements; a control circuit comprising one or more processors and memory structured to store instructions that, when executed by the one or more processors, cause the control circuit to: determine a temperature of the least one resistor element, according to measurements from the temperature sensor; and determine a resistive braking capacity of the resistor grid within a power capacity differential, according to the determined temperature of the resistor element; and a display configured to render a graphical representation of the resistive braking capacity of the resistor grid relative to the power capacity differential.
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公开(公告)号：US20250157705A1
公开(公告)日：2025-05-15
申请号：US18507386
申请日：2023-11-13
Applicant: Caterpillar Inc.
Inventor： Pruthvi Raj Gaddam , Dennis Christopher Agee , Drew Devlin Carlton , Dustin Scott Friedrich , Jacob Dean Randall
Abstract: Systems, apparatuses, and methods for a modular resistor grid system include a mount and a plurality of modular resistor grid assemblies that interchangeably couple to the mount. At least two modular resistor grid assemblies are in the plurality. Each has a housing and a plurality of resistor plates. Each housing has input and output terminals. Each plurality of resistor plates is connected between the input and the output terminal of a housing. Each resistor plate has a thickness, and each plurality of resistor plates provides a target electrical resistance for a modular resistor grid assembly. A first modular resistor grid assembly has a first number of resistor plates with a first thickness. A second modular resistor grid assembly has a second number of resistor plates with a second thickness. The first number of resistor plates is greater than the second number. The first thickness is greater than the second thickness.
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Patent Agency Ranking
公开(公告)号：US20250154957A1
公开(公告)日：2025-05-15
申请号：US18507577
申请日：2023-11-13
Applicant: Caterpillar Inc.
Inventor： Jacob Dean Randall , Dennis Christopher Agee
Abstract: Provided herein is a system including: a resistor grid electrically coupled to a motor of an electric drive machine; a fan including a plurality of fan blades rotatably coupled to a fan motor; a speed sensor configured to measure a rotational speed of the fan; and a control circuit comprising one or more processors and a memory structured to store instructions that, when executed by the one or more processors, cause the control circuit to: determine an active cooling capacity of the fan according to the measured rotational speed of the fan while the fan motor is in an active cooling mode; determine a passive cooling capacity of the fan according to the measured rotational speed of the fan after the fan motor is switched from the active cooling mode to an off mode; control power to the fan motor to provide a target cooling load according to the active cooling capacity of the fan and the passive cooling capacity of the fan.
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公开(公告)号：US20250153579A1
公开(公告)日：2025-05-15
申请号：US18507692
申请日：2023-11-13
Applicant: Caterpillar Inc.
Inventor： Jacob Dean Randall , Dennis Christopher Agee
Abstract: Provided herein is an electric drive machine including a battery having a state of charge ranging from a depleted state to a full state; a resistor grid electrically coupled to the battery; and a control circuit comprising one or more processors and a memory structured to store instructions that, when executed by the one or more processors, cause the control circuit to: determine the state of charge of the battery; determine a target state of charge of the battery according to an anticipated charge event; and control a flow of electrical current from the battery to the resistor grid, to modify the state of charge of the battery to the target state of charge, prior to the anticipated charge event.
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公开(公告)号：US20240025261A1
公开(公告)日：2024-01-25
申请号：US17814148
申请日：2022-07-21
Applicant: Caterpillar Inc.
Inventor： Jacob Dean Randall , Richard Eugene Hogan , Nimesh Akalanka Jayakody , Praveen Kumar Jonnavittula
CPC classification number: B60L5/12 , B60L50/53 , B60L5/08 , B60L2200/40
Abstract: A pantograph assembly includes one or more force dampeners. When the pantograph is in a lowered position, the force dampeners absorb forces imparted onto the pantograph assembly by the movement of a work machine to which the pantograph assembly is installed. Additionally, in some examples, the pantograph assembly includes a support frame that provides structural rigidity to an A-frame.
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公开(公告)号：US20250157706A1
公开(公告)日：2025-05-15
申请号：US18507792
申请日：2023-11-13
Applicant: Caterpillar Inc.
Inventor： Dennis Christopher Agee , Drew Devlin Carlton , Jacob Dean Randall
Abstract: Systems, apparatuses, and methods relate to modular resistor grid assemblies having a “black box” resistance. The modular resistor grid assemblies include a first plurality of first resistor plates having a first thickness disposed within a first housing. The first housing has a first input and output terminal. The first resistor plates provide a target electrical resistance between the first input output terminal. A second plurality of second resistor plates having a second thickness smaller than the first thickness is disposed within a second housing. The second housing has a second input and output terminal. The second resistor plates provide the target electrical resistance between the second input and output terminal. The first and second housing interchangeably couple to a resistive braking system. The first plurality includes a first number of first resistor plates, and the second plurality includes a second number of second resistor plates less than the first number.
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公开(公告)号：US20250154960A1
公开(公告)日：2025-05-15
申请号：US18507650
申请日：2023-11-13
Applicant: Caterpillar Inc.
Inventor： Jacob Dean Randall , Dennis Christopher Agee
Abstract: Provided herein is a system usable with an electric drive machine. The system includes: a resistor grid electrically coupled to a motor of an electric drive machine; a fan coupled to the resistor grid, the fan operable in two or more operation modes; a control circuit comprising one or more processors and memory structured to store instructions that, when executed by the one or more processors, cause the control circuit to: determine a cooling load for the resistor grid; determine a target fan speed according to the cooling load for the resistor grid and a selected operation mode from the two or more operation modes of the fan; and provide an output corresponding to the target fan speed to the fan.
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