Electric Vehicle Charging Control Using Regenerative Braking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Eco-friendly vehicles face inconvenience due to the need for charging infrastructure, as they cannot travel during battery charging, leading to delayed arrival times and inefficiencies in energy usage.
Innovation Solution
A vehicle system that enables charging through regenerative braking and communication with other vehicles for sharing charging services, adjusting regenerative torque based on road slope and battery state, and prioritizing charge or efficiency modes to optimize energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the vehicle charges the battery using traditional charging infrastructure, then the battery charge level is improved, but the vehicle cannot travel during charging causing delayed arrival time and loss of time
Solution Approach 1:
The patent converts the normally wasted kinetic energy during braking into useful electrical energy for charging the battery. By implementing regenerative braking, the system transforms energy that would otherwise be lost as heat into rechargeable energy, allowing the vehicle to charge while moving and eliminate arrival delays
Solution Approach 2:
The patent enables continuous charging action by allowing the vehicle to charge the battery during normal operation through regenerative braking. The charging process occurs continuously during deceleration events rather than requiring stationary charging stops, maintaining continuous vehicle operation and travel
2Use of energy by moving object
If the vehicle uses regenerative braking for charging, then energy efficiency is improved, but the regenerative torque may be insufficient or excessive depending on road conditions
Solution Approach 1:
The patent implements dynamic adjustment of regenerative torque based on real-time road conditions detected by the slope detector. The controller modifies the regenerative braking force according to the detected slope, ensuring optimal energy recovery while maintaining vehicle controllability and comfort across varying road conditions
Solution Approach 2:
The patent employs feedback control by using the slope detector to continuously monitor road conditions and adjusting the regenerative torque accordingly. The system receives feedback about the road slope and modifies the charging parameters to optimize energy recovery while preventing excessive or insufficient braking torque
3Productivity
If the vehicle prioritizes charge mode, then battery charging speed is improved, but the vehicle performance and efficiency are reduced
Solution Approach 1:
The patent implements dynamic switching between charge priority mode and efficiency priority mode based on the vehicle's operational state and battery charge level. The controller adjusts the regenerative braking intensity and motor operation mode dynamically, maximizing charging speed when needed while maintaining vehicle efficiency during normal operation
Solution Approach 2:
The patent changes operational parameters such as regenerative torque magnitude and motor rotational speed based on the selected priority mode. In charge priority mode, the system increases regenerative torque to maximize charging speed, while in efficiency mode, it optimizes parameters for balanced performance and energy efficiency
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 system allows for continuous travel during charging, optimizing energy use and reducing user inconvenience by enabling battery charging through regenerative braking and communication with other vehicles, enhancing the usability and environmental impact of eco-friendly vehicles.
Implementation Method 1
execute charging of the battery based on electric power generated by the motor while using the charging service
Data Source
AI summary
A vehicle is provided that includes a battery; a motor configured to rotate a wheel using electric power charged in the battery; and a communication device that performs communication with other vehicles and a terminal. A controller operates the communication device to transmit request information of a charging service when an amount of charge of the battery is equal to or less than a preset amount of charge and charges the battery based on electric power generated by the motor while using the charging service through one of the other vehicles.