BEV Range Extension Control With User-Set Energy Allocation
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Solution Overview
Problem
Conventional range extension strategies for battery electric vehicles (BEVs) such as ECO Mode result in poor vehicle acceleration, speed, and cabin thermal comfort due to constant predetermined control setpoints, which do not adapt to actual trip variations.
Innovation Solution
A user-customizable range extension system that allows users to adjust the range extension level and allocate it between the propulsion, thermal management, and auxiliary power systems of a BEV through a user interface, enabling real-time adjustments during trips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If predetermined control setpoints are used for range extension, then energy consumption is reduced, but vehicle performance and user comfort deteriorate
Solution Approach 1:
The system transitions from static predetermined control setpoints to dynamic user-adjustable range extension levels. Users can modify the range extension level and allocate energy distribution in real-time based on actual driving conditions and preferences, allowing the system to adapt between energy conservation and performance maintenance
Solution Approach 2:
The system allows users to change key operating parameters including the range extension level (affecting propulsion power) and energy allocation percentages across different vehicle systems. These parameter changes enable flexible trade-offs between energy consumption and vehicle performance based on user needs
2Device complexity
If constant control setpoints are applied to all systems, then energy management is simplified, but adaptability to different trip conditions is reduced
Solution Approach 1:
The control system is segmented into independent adjustable components: the range extension level control and separate energy allocation controls for propulsion, thermal management, and auxiliary systems. This segmentation allows users to independently adjust each aspect without increasing overall system complexity
Solution Approach 2:
The user interface provides a universal control mechanism that manages multiple vehicle systems simultaneously. A single range extension level adjustment affects propulsion power, while separate allocation controls distribute energy across thermal management and auxiliary systems, providing multi-functional control without proportional increases in complexity
Data Source
AI summary
User-customizable range extension techniques for battery electric vehicles (BEVs) include receiving, by a controller and from a user interface, a first user input from a user indicating a range extension level for operation of the BEV, the range extension level indicating a reduced operation of the BEV relative to a normal operation of the BEV to increase the range of the BEV, receiving, by the controller and from the user interface, a second user input from the user indicating an allocation of the range extension level between a plurality of different systems of the BEV, and controlling, by the controller, the BEV including its plurality of different systems based on the range extension level and the indicated allocation thereof to increase a range of the BEV as specified by the user.