System for Cooling an Electric Motor

US 12,261,501, assigned to Blak LLC, covers methods and systems of cooling electric motors, and is available for sale through IPApproach.

US Patents

1 granted

Assignee

Blak LLC

Availability

For Sale

Patents Included

• US 12,261,501↗

Technology Highlights

• The invention enhances thermal management by delivering coolant directly onto the stator, effectively dissipating heat at the source and maintaining optimal operating temperatures.
• The invention addresses heat generation at the ends of stator wires, which can lead to motor failure, by proposing a cooling system that delivers coolant directly to these critical areas.
• The invention offers scalability and versatility through multiple coolant inlets positioned at various circumferential locations, allowing targeted cooling of different stator sections.
• The invention integrates seamlessly with existing systems by utilizing components like check valves, accumulator tanks, and heat exchangers, simplifying the cooling process without necessitating significant redesigns.
• The invention facilitates easy integration with existing motor systems, allowing for retrofitting without significant modifications, thereby enhancing the adaptability of the cooling solution.
• The invention enables optimal cooling regardless of motor orientation, ensuring effective cooling even when the motor operates in a horizontal orientation.
• The invention maintains continuous coolant circulation by utilizing a pump in fluid communication with the accumulator tank, ensuring consistent cooling performance throughout motor operation.
• The invention transfers heat to the environment through a heat exchanger in the system, effectively dissipating heat from the coolant and preventing overheating of motor components.
• The invention allows for air escape via a breather or vent in the accumulator tank, preventing air contamination within the cooling system and ensuring efficient heat transfer.
• The invention reduces maintenance needs and downtime by maintaining optimal operating temperatures and preventing overheating, leading to lower maintenance requirements and less downtime.
• The invention contributes to energy efficiency by reducing the need for additional cooling mechanisms and minimizing energy losses, leading to cost savings and environmental benefits.
• The invention utilizes electrically inactive coolants, such as Automatic Transmission Fluid (ATF), to prevent short circuits in the stator windings.
• The invention supports centrifugal coolant circulation, with the turning rotor circulating coolant within the casing, enhancing heat dissipation.

Overview

The technology disclosed provides the following advantages:

Listing updated August 21, 2026

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