Dual Row Planetary Hybrid Coupling Mechanism for Motor Vehicle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hybrid vehicle power systems face inefficiencies due to the need for mechanical-electrical and electrical-mechanical energy transformations, leading to high energy loss and increased motor power requirements, weight, and complexity.
Innovation Solution
A dual row planetary hybrid coupling mechanism that includes a fuel-driven mechanism, single row planetary gear mechanism, dual clutch, intermediate connecting shaft structure, compound planetary gear mechanism, and electric driving mechanisms, allowing for adjustable speed ratios and reduced motor size through the use of two motors and a planetary gear system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a series hybrid system is used with simple structure, then the layout is flexible and structure is simplified, but the motor power requirement increases, volume and weight increase, and system efficiency decreases due to dual energy transformations
Solution Approach 1:
The patent replaces the traditional series hybrid mechanical transmission system with a planetary gear-based power coupling mechanism. This mechanical substitution eliminates the need for dual mechanical-electrical energy transformations by directly coupling the engine and motor through planetary gear sets, thereby reducing energy loss while maintaining structural simplicity.
Solution Approach 2:
The patent merges the engine and motor power paths into a unified planetary gear coupling system where both power sources can directly drive the output shaft. This merging eliminates the separate generator-motor conversion path, reducing system complexity and energy transformation losses while maintaining flexible power distribution.
2Device complexity
If a series hybrid system is used, then the structure is simplified, but the motor volume and weight increase due to high power requirements
Solution Approach 1:
The patent segments the power transmission path into multiple planetary gear stages, allowing the motor to operate at optimized power levels while the planetary gears provide mechanical multiplication. This segmentation reduces the motor's power burden and consequently its weight, while the overall structure remains compact and integrated.
3Adaptability or versatility
If a parallel hybrid system is used with two independent power chains, then the mechanical transmission can adjust speed and the motor-battery system adjusts power, but the structure becomes more complicated and costs increase
Solution Approach 1:
The patent merges the two independent power chains of a parallel hybrid system into a single integrated planetary gear coupling mechanism. Both engine and motor powers are coupled through the planetary sets, allowing continuous power adjustment and flexible operation modes while eliminating the need for separate mechanical transmission and electrical control systems, thereby reducing structural complexity.
4Device complexity
If step-variable transmission is used, then the structure is simpler, but the number of discrete speed ratios is limited and fuel consumption increases
Solution Approach 1:
The patent employs a dynamically adjustable planetary gear coupling mechanism that can continuously vary the power distribution ratio between engine and motor, as well as the output speed ratio. This dynamic adjustment capability replaces fixed discrete gear steps, enabling optimal engine operation across varying driving conditions and reducing fuel consumption without significantly increasing structural complexity.
Data Source
AI summary
Some embodiments of the present disclosure provide a dual row planetary hybrid coupling mechanism and a motor vehicle. The dual row planetary hybrid coupling mechanism includes a fuel driven mechanism, a single row planetary gear mechanism, a dual clutch, an intermediate connecting shaft structure, a compound planetary gear mechanism, a first electric driving mechanism, a second electric driving mechanism and a power output mechanism, wherein the fuel driven mechanism, the first electric driving mechanism and the second electric driving mechanism are connected for output by the single row planetary gear mechanism and the compound planetary gear mechanism, and finally, power output is carried out by the power output mechanism.