Dual-Motor Hybrid Powertrain for Multi-Mode Power Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hybrid powertrains have poor power retention performance due to limited functionality and running modes.
Innovation Solution
A hybrid powertrain design featuring a compact structure with multiple implementable functions and rich running modes, incorporating a first and second electrical machine, a clutch assembly, and a power battery, allowing for power generation and distribution through a multi-electrical machine combination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a simple electrical machine combination is used, then the device complexity is reduced, but the power retention performance deteriorates
Solution Approach 1:
The powertrain system is segmented into multiple functional modules: a first electrical machine for driving, a second electrical machine for power generation, an engine, and a clutch assembly. This segmentation allows each component to specialize in specific functions, improving overall power retention while keeping each individual component relatively simple.
Solution Approach 2:
The clutch assembly serves multiple functions: it selectively connects/disconnects the first electrical machine from the engine, enables the second electrical machine to generate power during engine operation, and facilitates different running modes (driving, power generation, idle). This multi-functionality improves power retention performance without proportionally increasing device complexity.
2Adaptability or versatility
If multiple electrical machines are added to improve running modes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The clutch assembly provides dynamic connectivity, selectively engaging or disengaging the first electrical machine from the engine based on operating conditions. This dynamic configuration enables the system to switch between different running modes (driving mode, power generation mode, idle mode), improving adaptability while avoiding the need for permanently complex multi-machine configurations.
Solution Approach 2:
The clutch assembly acts as an intermediary component that mediates the interaction between the first electrical machine, the engine, and the second electrical machine. By controlling power flow paths through this intermediary, the system achieves multiple running modes without requiring direct complex interconnections between all electrical machines and the engine.
3Ease of operation
If the clutch assembly is used to selectively connect components, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The clutch assembly automatically manages power distribution based on system conditions, enabling the second electrical machine to generate power during engine operation without requiring complex external control mechanisms. This self-service capability improves ease of operation while keeping the clutch assembly structure relatively simple.
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 hybrid powertrain achieves enhanced power retention performance and enriched driving functions by implementing different running modes and efficient power generation and distribution.
Implementation Method 1
a second electrical machine, the second electrical machine including a rotor and a stator, the rotor being configured to rotate relative to the stator
Data Source
AI summary
A hybrid powertrain and a vehicle are provided. The hybrid powertrain includes a first electrical machine, an engine, a main shaft, a clutch assembly, a second electrical machine, and a power battery. One end of the main shaft is connected to an output shaft of the engine, and another end of the main shaft is selectively connected to an electrical machine shaft of the first electrical machine through the clutch assembly. The first electrical machine is configured to selectively output power to a first wheel end through the clutch assembly. The second electrical machine includes a rotor and a stator, the rotor is configured to rotate relative to the stator, and the rotor is fixedly connected to the main shaft. The first electrical machine and the second electrical machine are connected to the power battery.