Hybrid Powertrain Layout With Independent Power Distribution Shaft
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Solution Overview
Problem
The contradiction between transmission efficiency and spatial arrangement is a significant challenge in hybrid electric vehicles, as existing designs often require complex spatial arrangements and inefficient transmission paths, leading to increased costs, weight, and reduced performance.
Innovation Solution
A hybrid power-driven system with a power distribution shaft independently disposed from the transmission mechanism and motor, allowing direct transmission to the input shaft or main reducer, minimizing overlapping transmission paths and enabling efficient power distribution between the motor and engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the motor and transmission mechanism are integrated with overlapping transmission paths, then spatial arrangement is improved, but transmission efficiency deteriorates due to longer power transmission paths
Solution Approach 1:
The power distribution mechanism is segmented into independent components: power distribution shaft, mode selection apparatus, first transmission apparatus, and second transmission apparatus. This segmentation allows separate transmission paths for motor power, avoiding overlap with the transmission mechanism path and reducing energy loss.
Solution Approach 2:
The power distribution shaft acts as an intermediary component that receives power from the motor and distributes it to either the input shaft or main reducer through separate transmission apparatus. This intermediary structure enables independent transmission paths without requiring integration with the transmission mechanism.
2Loss of energy
If an independent power distribution shaft is added, then transmission efficiency is improved through minimized paths, but device complexity increases
Solution Approach 1:
The power distribution shaft serves multiple functions: it receives motor power, distributes power to different components (input shaft or main reducer), and enables mode switching. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The mode selection apparatus merges the switching function with the power distribution structure. The clutch apparatus and synchronizers are integrated into the power distribution mechanism, allowing mode switching and power distribution to be achieved through a unified structure rather than separate systems.
3Area of stationary object
If complex transmission paths are used to connect motor and transmission, then spatial arrangement is achieved, but system weight and cost increase
Solution Approach 1:
The motor transmission path is extracted from the conventional transmission mechanism path. By taking out the motor power transmission route and creating a separate path through the power distribution shaft, the design avoids the need for complex integrated arrangements that would increase weight.
Solution Approach 2:
The power distribution mechanism utilizes radial space independently from the transmission mechanism's axial space. The power distribution shaft and its associated gears are arranged in a different spatial dimension, allowing compact packaging without increasing the overall system footprint or weight.
Data Source
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AI summary
A hybrid power-driven system and a vehicle are provided. The hybrid power-driven system includes an engine, a transmission, and a motor power apparatus. The transmission includes a transmission mechanism and a main reducer. The motor power apparatus includes a motor and a power distribution mechanism. The power distribution mechanism includes a power distribution shaft, a mode selection apparatus, a first transmission apparatus, and a second transmission apparatus. The power distribution shaft is disposed independently from the transmission mechanism, and the power distribution shaft is disposed independently from the motor. A motor driven gear configured to receive power of the motor is disposed on the power distribution shaft.