EV Battery Load Control for Distance to Empty Extension
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Solution Overview
Problem
Electric vehicles face challenges in extending their distance to empty (DTE) due to limited recharging infrastructure, as they require frequent charging, and existing systems lack effective methods to manage battery power consumption when a recharging station is unavailable within the calculated DTE.
Innovation Solution
A vehicle system that includes a DTE calculator, controller, and display to adjust battery power consumption by stopping loads such as air conditioning, navigation, and audio systems, and change driving modes to increase the DTE, along with a communication unit to receive information on nearby recharging stations and route planning from an external server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle operates all loads (air conditioner, heater, navigation, audio system, etc.) normally, then the comfort and functionality for the driver are maintained, but the battery power consumption increases and the distance to empty (DTE) decreases
Solution Approach 1:
The system dynamically adjusts the operation of loads based on real-time battery state and DTE calculations. The controller selectively activates or deactivates specific loads (air conditioner, heater, navigation, audio system) depending on whether a recharging station is detected within the calculated DTE, making the power consumption adaptive to charging infrastructure availability
Solution Approach 2:
The system changes operational parameters of loads by creating user interfaces that allow the driver to adjust or disable specific loads. The controller transmits control signals to modify the power consumption parameters of individual loads based on the detected recharging station availability and calculated DTE
2Adaptability or versatility
If the vehicle maintains all driving modes available, then the driving performance and driver preference satisfaction are maintained, but the battery power consumption increases and the DTE decreases
Solution Approach 1:
The system dynamically adjusts available driving modes based on battery state and recharging station detection. When no recharging station is within DTE, the controller restricts or modifies available driving modes through the user interface, preventing selection of high-power modes that would further reduce an already limited DTE
3Loss of information
If the vehicle provides comprehensive real-time information to the driver about all system operations, then the driver awareness and control are improved, but the device complexity and information processing requirements increase
Solution Approach 1:
The system segments information presentation by creating separate user interfaces for different aspects: DTE calculation display, recharging station location display, individual load power consumption display, and driving mode information. This modular information architecture reduces processing complexity while maintaining comprehensive driver awareness
Data Source
AI summary
A vehicle and a method for controlling the same are provided to secure additional distance to empty (DTE) of the vehicle by controlling the use of a load that is consuming battery power or by changing driving mode, when a recharging station is unavailable within DTE of the vehicle at a current battery charge level. The vehicle includes a DTE calculator that calculates DTE of the vehicle based on a battery charge level and a cluster that displays the calculated DTE. A controller detects a recharging station located within the calculated DTE and transmits a control signal to create an interface for controlling battery power consumption based on battery power consumed by at least one load when a recharging station is unavailable within the calculated DTE and a display displays the created interface.