Wheel Electromagnetic Brake Rotor Drive for EV Range Extension
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Solution Overview
Problem
Current electric vehicle (EV) power systems face challenges related to the frequency and duration of recharging, as well as the scarcity of recharging stations, which deter drivers from transitioning from gasoline internal combustion engine vehicles to EVs.
Innovation Solution
A wheel-based electromagnetic automotive power assembly is introduced, where the vehicle's battery powers magnets fixed along the circumferential surface of a brake rotor in an alternating charged arrangement, eliminating the need for a motor and transmission by directly powering the wheels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional electric motors with transmission systems are used, then vehicle power and acceleration are achieved, but device complexity and number of moving parts increase
Solution Approach 1:
The patent extracts and eliminates the transmission system from the vehicle powertrain, using in-wheel motors that connect directly to the wheels. This removes unnecessary moving parts while maintaining power delivery capability, directly resolving the contradiction between achieving vehicle power and reducing device complexity
Solution Approach 2:
The patent segments the centralized motor system into distributed in-wheel motors, with each wheel having its own motor assembly. This segmentation eliminates the need for a centralized transmission system while maintaining the required power output for vehicle operation
2Device complexity
If in-wheel motors are used to eliminate transmission, then device complexity is reduced, but energy efficiency and driving range are limited
Solution Approach 1:
The patent merges the braking system and motor system into a single integrated assembly. The electromagnetic braking mechanism serves dual purposes: providing braking force and generating regenerative energy to recharge the battery during deceleration. This combination improves energy efficiency by recovering energy that would otherwise be lost, while maintaining the simplified device structure
Solution Approach 2:
The patent converts the energy that would be wasted as heat during braking into useful electrical energy through regenerative braking. The electromagnetic braking system captures kinetic energy during deceleration and converts it back to electrical energy for battery recharging, transforming energy loss into energy recovery
3Duration of action of moving object
If battery capacity is increased to extend driving range, then vehicle range is improved, but vehicle weight increases
Solution Approach 1:
The patent implements regenerative braking that captures kinetic energy during deceleration and converts it to electrical energy for battery recharging. This energy recovery mechanism extends the effective driving range without requiring additional battery capacity, thereby avoiding the weight penalty of larger batteries
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
This solution improves battery performance, power efficiency, and vehicle driving range, reducing the number of components needed to move the vehicle, thereby enticing more adopters of EVs.
Implementation Method 1
the alternating powered electromagnets, when selectively powered, magnetically urge the series of alternating charged magnets to rotate the brake rotor disc
Data Source
AI summary
A wheel-based electromagnetic automotive power assembly for an electric vehicle. The wheel-based electromagnetic automotive power assembly has a series of alternating charged magnets communicating with a circumferential edge of a brake rotor disc. A plurality of alternating fixed electromagnets is supported by a brake caliper operatively associated with the brake rotor disc to both actuate a braking action to a respective motive wheel of the electric vehicle operatively associated with the brake rotor disc, and, when selectively powered by the driver, the alternating powered electromagnets magnetically urge the series of alternating charged magnets to rotate the brake rotor disc and thus the operatively associate motive wheel.