Hybrid Powertrain Segmentation for Stationary Generation
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Solution Overview
Problem
Hybrid vehicles have limited drive modes and low power generation efficiency, particularly under stationary power generation conditions, which affects their dynamic and economic performance.
Innovation Solution
A power-driven system with a double-clutch device and a second motor generator positioned between the engine and input shafts, allowing for high drive efficiency in both electric and hybrid modes, and enabling stationary power generation when the vehicle is parked, through a configuration that includes a second clutch device within the rotor of the motor generator and a compact arrangement of gears and synchronizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional hybrid vehicle powertrain is used, then the vehicle can operate in multiple drive modes, but the drive efficiency and power generation efficiency remain low
Solution Approach 1:
The powertrain is segmented into two independent clutch devices (first clutch device with multiple input shafts, second clutch device within motor generator rotor), allowing selective engagement of different power sources and transmission paths. This segmentation enables efficient routing of power flow for different drive modes without requiring a completely complex integrated structure.
Solution Approach 2:
The second clutch device is nested within the rotor of the motor generator, and the motor generator is positioned within the transmission housing near the input shafts. This nested arrangement reduces overall system size and minimizes the number of external components, achieving high functionality without proportional increase in device complexity.
2Use of energy by moving object
If the vehicle is equipped with stationary power generation capability, then energy utilization improves, but the system size and weight increase
Solution Approach 1:
The motor generator serves multiple functions: it acts as a starter motor during engine startup, functions as a power source during hybrid drive mode, and operates as a generator during stationary power generation mode. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall system weight while maintaining full capability.
Solution Approach 2:
The second clutch device is combined with the motor generator rotor, and the stationary power generation system is merged with the existing hybrid powertrain components. By combining these functions into unified structures rather than adding separate systems, the weight increase is minimized while achieving comprehensive energy utilization.
3Adaptability or versatility
If multiple input shafts and clutch devices are added, then drive mode versatility improves, but the transmission complexity increases
Solution Approach 1:
The transmission system dynamically adapts its configuration through selective engagement of the first and second clutch devices. The first clutch device can connect the engine to different input shafts based on drive mode requirements, while the second clutch device within the motor generator rotor enables dynamic switching between motor drive and generator modes. This dynamic adaptability provides versatility without requiring all components to be permanently connected in a complex fixed structure.
Data Source
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AI summary
The present disclosure provides a power-driven system for a vehicle and a vehicle. The power-driven system comprises: an engine; a plurality of input shafts, the engine being configured to selectively engage with at least one of the plurality of input shafts; a plurality of output shafts; a first motor power shaft, a motor power shaft first gear being arranged on the first motor power shaft, the motor power shaft first gear and the plurality of output shafts linking with a differential of the vehicle respectively; a second motor power shaft, a motor power shaft second gear linking with one gear-position driven gear being arranged on the second motor power shaft; a transfer gear, configured to selectively engage with the motor power shaft first gear to link with the motor power shaft first gear, and selectively engage with the motor power shaft second gear to link with the motor power shaft second gear; and a first motor generator, configured to link with the transfer gear.