Regenerative Braking Control for Electric Vehicles
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Solution Overview
Problem
Eco-friendly vehicles face issues with regenerative braking not being performed effectively, particularly when the battery is full, leading to reduced braking performance and increased risk of accidents during downhill driving, and inefficient charging due to lack of optimization in charging strategies based on road information.
Innovation Solution
A vehicle system that acquires and utilizes road information to control battery charging through regenerative braking, including a storage unit to store road inclination data, a controller to identify optimal charging amounts based on route and driving patterns, and detectors to monitor road conditions and user inputs, ensuring efficient energy recovery and safe braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery is charged to full capacity at the charging station, then the battery energy storage is maximized, but regenerative braking cannot be performed when driving on downhill roads, leading to braking performance deterioration
Solution Approach 1:
The system performs preliminary analysis of road inclination information before charging at the charging station. By identifying downhill sections ahead and calculating the charging amount that can be recovered through regenerative braking, the system determines an optimal charging limit that preserves sufficient battery capacity for future regenerative braking operations, thus maintaining braking performance while maximizing energy recovery opportunities.
2Reliability
If the battery charge level is maintained high to ensure energy availability, then power supply reliability is improved, but the opportunity for regenerative braking energy recovery is lost
Solution Approach 1:
The system implements a feedback mechanism that continuously monitors battery charge level, road inclination data, and vehicle operating conditions. Based on this feedback, the controller dynamically adjusts the charging amount at the charging station to ensure that sufficient capacity is reserved for regenerative braking opportunities on downhill sections, thereby optimizing both power supply reliability and energy recovery.
3Ease of operation
If conventional charging strategies are used without considering road information, then charging process simplicity is maintained, but charging efficiency and energy recovery optimization are reduced
Solution Approach 1:
The system segments the charging process into multiple stages based on road inclination analysis. By dividing the charging station's output into different charge amounts corresponding to different downhill sections ahead, the system optimizes energy recovery opportunities while maintaining automated control that keeps the operation simple for the user. The controller automatically manages the segmented charging based on pre-analyzed road information.
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 regenerative braking performance by optimizing charging strategies, reducing the risk of accidents and improving battery efficiency, thereby extending battery life and reducing charging time and costs.
Implementation Method 1
a motor configured to generate a driving force by using the electric power charged in the battery, perform regenerative braking, and charge the battery through regenerative braking
Data Source
AI summary
A vehicle and a method for controlling the vehicle are provided. The vehicle may include a battery; and a motor configured to generate a driving force by using the electric power charged in the battery, perform a regenerative braking, and charge the battery through the regenerative braking. The vehicle identifies destination information entered in the input during the preparation of charging at the charging station, searches for a route from the charging station to the destination based on the position information of the charging station and the position information of the destination, acquires the charging amount by regenerative braking based on the road information in the searched route and the table, and stops controlling the charging of the battery when the charging amount charged in the battery is charged by the regenerative braking during charging of the battery at the charging station.