On-Vehicle Wind Generator for Continuous EV Battery Charging
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Solution Overview
Problem
Electric vehicles face limitations in driving range due to insufficient battery capacity, requiring frequent stops for charging, especially when solar power is unavailable, and existing charging solutions are inefficient or unreliable, particularly in areas lacking infrastructure.
Innovation Solution
A smart wind generator (SWG) that harnesses wind energy to charge electric vehicle batteries while driving, utilizing the vehicle's speed to control the rotational speed of a small fan and generator, producing 220 volts and 10 KW of power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solar power is used to charge electric vehicles, then charging can be performed during the day, but charging becomes ineffective after sunset, at night, or when the sky is cloudy
Solution Approach 1:
The patent changes the energy source parameter from solar to wind power. The wind generator system uses turbine blades that rotate in response to wind flow, converting kinetic energy from wind into electrical energy through electromagnetic induction. This parameter change allows charging to occur independently of sunlight conditions, resolving the contradiction between charging availability and adaptability to different environmental conditions.
2Duration of action of moving object
If battery capacity is increased to extend driving range, then driving distance increases, but vehicle weight and cost increase
Solution Approach 1:
The patent implements a self-charging system where the vehicle generates its own electrical energy through a wind generator mounted on the vehicle body. The turbine blades capture wind energy during vehicle operation, and the generated electricity is stored in a battery or capacitor for later use. This self-service approach extends driving range without requiring additional battery weight, as the vehicle replenishes its own energy supply during normal operation.
Solution Approach 2:
The wind generator system serves multiple functions: it generates electrical energy for charging the battery, reduces dependence on grid infrastructure, and can operate during vehicle motion regardless of location. This multi-functionality allows the vehicle to maintain extended range capability without the weight penalty of larger batteries, as the same system provides both propulsion support and energy generation.
3Reliability
If frequent stops at charging stations are made to recharge battery, then battery is maintained charged, but total trip duration increases and driver stress increases
Solution Approach 1:
The patent enables continuous charging during vehicle operation through the wind generator system. As the vehicle moves, the turbine blades continuously capture wind energy and convert it to electrical power, which is stored in the battery. This continuous energy generation during normal driving eliminates the need for periodic stops at charging stations, maintaining battery charge status while preserving trip continuity and reducing time loss.
4Power
If wind generator rotational speed is increased to produce more power, then charging power increases, but device complexity and control difficulty increase
Solution Approach 1:
The patent employs a dynamic pitch control mechanism for the turbine blades that automatically adjusts the blade angle in response to varying wind speeds. At low wind speeds, the blades are positioned to maximize torque and starting capability. As wind speed increases, the pitch angle adjusts to prevent overspeeding and regulate power output. This dynamic adaptation allows the system to produce optimal charging power across a range of wind conditions without requiring complex electronic control systems or variable speed drives.
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
Enables continuous charging during travel, reducing the need for stationary charging stations and enhancing driving range by using clean energy, with a charging rate of 1.35 times the discharge rate, ensuring one battery remains fully charged.
Implementation Method 1
A smart wind generator (SWG) that harnesses wind energy to charge electric vehicle batteries while driving
Implementation Method 2
utilizing the vehicle's speed to control the rotational speed of a small fan and generator, producing 220 volts and 10 KW of power
Data Source
AI summary
A Smart Electric Vehicle (SEV) which works by free clean energy provided it by Smart Wind Generator (SWG) which depends completely on wind energy, with using a small fan, to produce the wanted power under the impact of the wind speed power as the opposite power of Electric Vehicle Speed (EVS) on the road, to keep Electric Vehicle's Batteries (EVBs), on a good charging, without needing of electric grid. This SWG is configured to be a small generator (about 3.5 kg) with light and small fan, to generate the wanted power as a self-charger for SEV. This SWG is never used as an assistant charger, but it is the entire tool that will be used to convert the old system of charging electric vehicle to a self-charging system. Also, this invention is very simple, very easy to manufacture and to install in the SEVs, as a self-charger.