EV Braking Control for Unintended Acceleration Response
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Solution Overview
Problem
Electric vehicles experiencing unintended acceleration due to driver inexperience or similar factors pose a risk of traffic accidents, as the driver may struggle to control the vehicle.
Innovation Solution
A braking control apparatus and method that utilize internal and external driving data to determine risk levels and generate appropriate braking forces through regenerative braking, main braking, and parking brake units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If electric vehicles generate maximum torque at low RPM to achieve excellent acceleration performance, then acceleration capability is improved, but unintended acceleration occurs due to driver inexperience
Solution Approach 1:
The controller proactively applies braking force before the vehicle can accelerate to dangerous speeds by detecting unintended acceleration conditions (stationary vehicle with gear in drive or reverse state) and activating regenerative braking, main braking, or parking brake units to counteract the driving force and prevent harmful acceleration
Solution Approach 2:
The system continuously monitors internal driving data (driving speed, transmission status, motor output) and external driving data (obstacle detection, road conditions, traffic signals) to detect unintended acceleration conditions and dynamically adjusts braking force application to maintain vehicle control safety while preserving legitimate acceleration capability
2Ease of operation
If the driver operates the vehicle without experience, then ease of operation deteriorates, but unintended acceleration risk increases
Solution Approach 1:
The braking control apparatus autonomously detects unintended acceleration conditions and applies appropriate braking force without requiring driver intervention, effectively protecting inexperienced drivers from their own operational limitations while maintaining system simplicity and ease of use
3Force
If multiple braking units (regenerative braking, main braking, parking brake) are controlled simultaneously, then braking effectiveness is improved, but device complexity increases
Solution Approach 1:
The controller dynamically selects and adjusts the contribution of each braking unit (regenerative braking, main braking, parking brake) based on real-time driving conditions, motor output levels, and detected risk levels, optimizing braking force distribution adaptively rather than using a fixed control strategy
Solution Approach 2:
The system changes operational parameters of different braking units based on motor output thresholds (first and second reference outputs), switching between regenerative braking only, combined regenerative and main braking, or all three braking units plus motor shutdown, thereby managing complexity through parameter-based control logic
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 effectively mitigates the risk of unintended acceleration by generating controlled braking forces based on internal motor output and external environmental data, thereby enhancing vehicle stability and safety.
Implementation Method 1
a regenerative braking unit generating regenerative braking force
Implementation Method 2
a main braking unit generating braking force in the vehicle
Implementation Method 3
a parking brake unit generating parking brake force in the vehicle
Data Source
AI summary
A braking control apparatus includes a first receiving unit detecting internal driving data of a vehicle, a second receiving unit detecting external driving data of the vehicle, a regenerative braking unit generating regenerative braking force, a main braking unit generating braking force in the vehicle, a parking brake unit generating parking brake force in the vehicle, and a controller generating braking force by controlling at least one of the regenerative braking unit, the main braking unit, or the parking brake unit based on the internal driving data and the external driving data in response to determining that unintended acceleration occurs.