Hybrid Powertrain With Constant-Speed Generator Switching
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Solution Overview
Problem
Existing hybrid electric vehicles require two sets of transmission systems, leading to high production costs and complex speed-switching mechanisms, which are inefficient at low speeds and contribute to fuel consumption and environmental pollution.
Innovation Solution
A hybrid power system combining a rechargeable battery and an engine generator, which automatically switches between the battery and engine generator to supply electrical energy to a motor at different speeds, eliminating the need for dual transmission systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing hybrid electric vehicles use two sets of transmission systems to enable automatic switching between motor and internal combustion engine, then operating efficiency at different speeds is improved, but production cost and device complexity increase
Solution Approach 1:
The patent merges the transmission system into a single integrated structure that handles both motor and internal combustion engine power delivery. Instead of maintaining separate transmission systems for each power source, the invention creates one unified transmission system that can accommodate both engines, thereby reducing device complexity while preserving the ability to switch between power sources for optimal operating efficiency.
2Productivity
If existing hybrid electric vehicles use two sets of transmission systems with automatic switching mechanisms, then power delivery at high and low speeds is optimized, but manufacturing cost increases
Solution Approach 1:
The patent combines the transmission systems into a single integrated unit that serves both the motor and internal combustion engine. This merging eliminates the need for duplicate transmission components, thereby reducing manufacturing costs while maintaining the optimized power delivery capability across different speed ranges through intelligent power source selection.
3Power
If internal combustion engine operates at low speeds, then vehicle can provide power, but fuel consumption and pollutant emissions increase
Solution Approach 1:
The patent employs parameter changes by dynamically selecting which power source (motor or internal combustion engine) operates based on speed conditions. At low speeds, the system switches to motor power delivery, avoiding the high fuel consumption and emissions associated with internal combustion engine operation in this regime. The control system monitors operating parameters and adjusts power source selection to minimize harmful emissions while maintaining adequate power provision.
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 system enhances operating efficiency by automatically adjusting power sources based on speed, reducing fuel consumption, and lowering pollutant emissions, while offering flexible engine generator mounting and improved fuel efficiency.
Implementation Method 1
The engine generator is adapted to rotate at a constant speed to generate a first power
Implementation Method 2
The energy storage module is coupled to the electrical energy distributor. The engine generator is adapted to rotate at a constant speed to generate a first power, and the electrical energy distributor provides the first power to the motor and energy storage module
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A hybrid power system (100) including a transmission module (110), a motor, an engine generator (140), an energy storage module (150), and an electrical energy distributor (130) is disclosed. The motor is connected to the transmission module (110). The electrical energy distributor (130) is coupled to the motor. The engine generator (140) is coupled to the electrical energy distributor (130). The engine generator (140) is adapted to rotate at a constant speed to generate a first power (P1), and the first power (P1) is transmitted to the motor and the energy storage module (150) by the electrical energy distributor (130).