EV Disconnector Control for Fast Mode Switching and Efficiency
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Solution Overview
Problem
The disconnector in electric vehicles takes time to switch between engaged and disengaged states, affecting vehicle performance and efficiency due to frequent mode changes during driving conditions.
Innovation Solution
A disconnector control system that uses a processor to detect driving conditions and factors like road slope, wheel speed difference, steering angle, and torque to determine optimal engagement and disengagement based on predefined scores and reference values, adjusting vehicle settings to improve efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the disconnector is disengaged to reduce drag and improve fuel efficiency, then energy consumption decreases, but vehicle control performance deteriorates due to delayed response time
Solution Approach 1:
The control device predicts future driving conditions using navigation information (road slope, curvature, distance to intersections) and proactively engages the disconnector before urgent control is needed. This preliminary action allows the system to maintain optimal fuel efficiency while being prepared for rapid engagement when control is required, eliminating the trade-off between fuel efficiency and response speed.
2Adaptability or versatility
If the disconnector switches frequently between engaged and disengaged states to adapt to varying driving conditions, then adaptability improves, but mechanical wear and system reliability decrease
Solution Approach 1:
By predicting driving conditions in advance using navigation data and road information, the system engages the disconnector only when truly necessary, avoiding frequent unnecessary switching. This reduces mechanical wear while maintaining adaptability to actual driving needs.
Solution Approach 2:
The control device continuously monitors actual driving conditions (vehicle speed, acceleration, steering angle) and compares them with predicted conditions, adjusting disconnector operation to match real-time needs while minimizing unnecessary engagement cycles.
Data Source
AI summary
A disconnector control device and method for an electric vehicle are provided. The disconnector control device includes a disconnector that switches wheel driving manners and a processor that recognizes a driving condition of the vehicle. The processor also acquires at least one factor related to operation of the disconnector and operates the disconnector based on the acquired at least one factor.