Flywheel-Integrated Disk Generator for Compact Hybrid Powertrains
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing structure of a range extended electric vehicle, where an engine drives a generator through a flywheel disk, is complex and large in volume, affecting transmission efficiency and power density, making miniaturization difficult.
Innovation Solution
A disk generator integrated with a flywheel and rotor, featuring a torsional vibration damper with a drive disk and circumferential buffer members, is arranged in a compact configuration to reduce overall volume while maintaining transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine, flywheel disk, and generator are sequentially arranged in transmission, then the transmission connection is established, but the structure becomes complex and volume increases
Solution Approach 1:
The patent merges the flywheel and rotor into a single integrated component, eliminating the need for separate transmission connection between them. The integrated flywheel-rotor assembly directly couples the engine to the generator, simplifying the overall structure while maintaining reliable power transmission.
Solution Approach 2:
The integrated flywheel-rotor assembly performs multiple functions simultaneously: it acts as both a flywheel for energy storage and a rotor for electromagnetic induction. This multi-functionality eliminates the need for separate components and reduces structural complexity.
2Reliability
If the engine, flywheel disk, and generator are sequentially arranged in transmission, then the transmission connection is established, but the volume increases affecting miniaturization
Solution Approach 1:
The patent combines the flywheel and rotor into one integrated component, significantly reducing the axial length and overall volume of the generator assembly. This merging eliminates the need for intermediate transmission components and enables miniaturization of the hybrid powertrain.
Solution Approach 2:
The integrated flywheel-rotor assembly allows for compact nesting of components within the generator housing. The torsional vibration damper is nested within the flywheel-rotor assembly, and the entire unit is compactly arranged to minimize volume while maintaining transmission efficiency.
3Reliability
If the engine, flywheel disk, and generator are sequentially arranged in transmission, then the transmission connection is established, but transmission efficiency decreases
Solution Approach 1:
The direct integration of the flywheel and rotor eliminates intermediate transmission interfaces, reducing mechanical losses and improving transmission efficiency. The direct coupling ensures more effective power transmission from the engine to the generator.
4Reliability
If the engine, flywheel disk, and generator are sequentially arranged in transmission, then the transmission connection is established, but power density decreases
Solution Approach 1:
The integrated flywheel-rotor assembly increases power density by consolidating multiple functions into a single compact unit. This integration reduces the overall volume while maintaining or enhancing the power transmission capability, resulting in higher power density for the hybrid powertrain.
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
The compact integration of the flywheel and rotor reduces the generator's overall volume, facilitating miniaturization of the hybrid powertrain and vehicle components, enhancing transmission efficiency and power density.
Implementation Method 1
the circumferential buffer member is configured to elastically connect the drive disk to the groove in a circumferential direction of the drive disk
Implementation Method 2
the torsional vibration damper can filter vibration on an engine side, so that the flywheel can drive, under driving of the engine, the rotor to rotate
Data Source
AI summary
A disk generator integrated with a flywheel, a hybrid powertrain, and a vehicle. The disk generator includes the flywheel, a rotor, and a stator that are sequentially arranged adjacent to each other in an axial direction of the generator. The flywheel is configured to: be in transmission connection with an engine, and drive the rotor to rotate through a torsional vibration damper, and the torsional vibration damper includes a drive disk and a plurality of circumferential buffer members. The groove is configured to accommodate the drive disk and the plurality of circumferential buffer members, and the circumferential buffer member is configured to elastically connect the drive disk to the groove in a circumferential direction of the drive disk. The disk generator reduces an overall volume on the premise of ensuring transmission efficiency.