Oil-Cooled Motor Blocking Structure for Rotor Energy Loss
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Solution Overview
Problem
Existing oil-cooled motors experience kinetic energy loss due to the rotor consuming energy to spray cooling oil to the coil under centrifugal action at high speeds, affecting rotating speed and efficiency.
Innovation Solution
Incorporating a blocking member with a semi-arc structure around the coil winding to guide coolant away from the rotor, preventing contact and redirecting it to the lower end portion for balanced heat dissipation, thereby reducing kinetic energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the rotor sprays cooling oil to the end portion of the coil using centrifugal action, then the cooling effect of the coil is enhanced, but the kinetic energy of the rotor is consumed and the rotating speed is greatly affected
Solution Approach 1:
The patent extracts the harmful function of the rotor spraying cooling oil and transfers it to a dedicated cooling oil spray device. The rotor is removed from the cooling oil spraying function, keeping only its rotational function, while a separate device handles the cooling oil spray task using gravitational flow instead of centrifugal force.
Solution Approach 2:
The patent introduces a cooling oil spray device as an intermediary component between the cooling oil reservoir and the coil. This intermediary device uses gravitational flow to spray cooling oil onto the coil, eliminating the need for the rotor to consume kinetic energy for cooling purposes.
2Temperature
If cooling oil is sprayed to the end portion of the coil, then heat dissipation is improved, but the structure becomes more complex with additional components
Solution Approach 1:
The housing structure is designed to serve multiple functions: it provides structural support, contains the cooling oil reservoir, and incorporates the cooling oil spray device. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The patent merges the cooling oil reservoir and spray device into the existing housing structure. The housing simultaneously serves as the structural enclosure and the cooling system container, integrating multiple functions into a single component to reduce overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively reduces kinetic energy consumption and enhances heat dissipation balance across the upper and lower end portions of the coil winding, maintaining high rotating speeds and improving motor efficiency.
Implementation Method 1
a cooling channel 20 whose two ends extend to an end portion 30 of the coil winding 8, the cooling channel 20 being in communication with a first opening 11 and a second opening 12 respectively provided at a top end and a bottom end of the housing 10
Implementation Method 2
the cooling channel 20 has a nozzle 21 at a position close to the end portion 30 of the coil winding 8, wherein the nozzle 21 is configured to spray the coolant in the cooling channel 20 to the end portion 30 of the coil winding 8
Implementation Method 3
the blocking member 40 blocks between the nozzle 21 and the rotor 60... the blocking member 40 is configured to guide the coolant sprayed from the nozzle 21 to an area away from the rotor 60
Implementation Method 4
spray the coolant in the cooling channel 20 to the end portion 30 of the coil winding 8... to dissipate heat for the coil winding
Implementation Method 5
coolant sprayed from the nozzle 21 flows to an underside of the end portion 30 of the coil winding 8... to cool the coil winding
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
Embodiments of this application provide a motor, a powertrain, and a vehicle. The motor may be applied to an electric motor vehicle/electric vehicle, a pure electric vehicle, a hybrid electric vehicle, a range extended electric vehicle, a plug-in hybrid electric vehicle, a new energy vehicle, battery management, a motor & driver, a power converter, a reducer, or the like. The motor is configured to output power. In a process of outputting power by the motor, a blocking member arranged in the motor blocks the contact between a rotor of the motor and a coolant, so that the coolant does not splash under the centrifugal action of the rotor in the process of rotation, thereby avoiding the kinetic energy consumption of the rotor. Therefore, a rotating speed of the motor is faster, and the output power is greater. This resolves a problem of kinetic energy consumption of the rotor caused when the rotor in the existing motor sprays cooling oil to an end portion of a coil under the centrifugal action.