Blade-Type Motor-Generator for Vehicle Traction Power
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Solution Overview
Problem
Current electric motors for vehicle traction face limitations due to weight and size constraints, leading to insufficient power for medium to large vehicles, necessitating hybrid solutions with internal combustion engines, which complicate and increase costs.
Innovation Solution
A reversible electric motor-generator with a permanent-magnet rotor and sliding blades, capable of operating as a fluid machine, providing additional power and modular structure for various fluid processing, allowing direct operation as a pump or compressor without external machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electric motors are used for vehicle traction, then local pollution is eliminated and vehicle simplification is achieved, but power is insufficient for medium/large vehicles
Solution Approach 1:
The patent describes a device that functions as both an electric motor and a fluid machine (pump/compressor). The stator windings can be configured to produce magnetic fields for motor operation, while the same structure allows fluid intake and compression. This multi-functionality enables the system to provide both propulsion power and auxiliary functions (air conditioning, braking assistance) without requiring separate motors, thereby increasing total available power while maintaining the environmental benefits of electric propulsion.
2Power
If hybrid vehicles with internal combustion engine are used, then power is increased for medium/large vehicles, but device complexity and cost increase
Solution Approach 1:
The patent merges the functions of an electric motor and a fluid machine into a single integrated device. The stator assembly includes windings that generate magnetic fields for motor operation, while the same stator structure forms compression chambers for fluid intake and compression. The rotor serves dual purposes as both the rotating component for motor function and the impeller for fluid compression. This consolidation eliminates the need for separate air conditioning compressors and other auxiliary motors, reducing overall system complexity while providing additional power sources.
3Force
If direct-current permanent-magnet motor is used, then torque at low rotation speeds is high and compact design is achieved, but weight and dimensions limit power output
Solution Approach 1:
The patent describes a device that functions as both an electric motor and a fluid machine (pump/compressor). The stator windings can be configured to produce magnetic fields for motor operation, while the same structure allows fluid intake and compression. This multi-functionality enables the system to provide both propulsion power and auxiliary functions (air conditioning, braking assistance) without requiring separate motors, thereby increasing total available power while maintaining the environmental benefits of electric propulsion.
Solution Approach 2:
The patent utilizes the fluid compression capability to provide supplementary power during high-demand situations such as acceleration, overtaking, and emergency maneuvers. The fluid machine aspect can rapidly compress fluid to generate additional mechanical power, bypassing the limitation of battery capacity and motor size constraints. This allows the system to deliver peak power when needed without requiring permanently oversized batteries or motors.
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 motor-generator offers increased power availability, reduced weight and size, and versatility in operating as both a motor and generator, enabling supplementary mechanical power and energy recovery, suitable for electric or hybrid vehicles, replacing auxiliary systems like air-conditioning compressors and oil pumps.
Implementation Method 1
an armature, a permanent-magnet rotor and two wound-wire stators, arranged on opposite sides of the rotor
Implementation Method 2
The rotor has a plurality of blades, which extend in a substantially radial direction from the rotor towards the armature
Implementation Method 3
The radial thickness of the profile varies in a monotone way along said arc, from an initial section in which the profile practically lies on the rotor, to an end section where clearance between the profile and the rotor is minimum
Data Source
Figure 1~2
AI summary
Electric motor-generator comprising an armature (1), a permanent- magnet rotor (2), a pair of wound-wire stators (3, 4) arranged from opposite sides of the rotor (2) and integral with the armature (1), and a control system, wherein: the rotor (2) comprises a plurality of moving blades (8), directed in a substantially radial direction from the rotor (2) to the armature (1), and sliding in a radial direction with respect to said rotor (2); the armature (1) has a plurality of supporting profiles (9) for said moving blades (8), arranged to define compression or expansion chambers (11) between the rotor (2) and the armature (1); the armature (1) has fluid inlet and outlet openings (12, 13) for each of said chambers (11).