EV Battery Range Display for Heater Warm-Up Decisions
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Solution Overview
Problem
Users of battery electric vehicles are unaware of the increased travelable distance due to battery temperature rise from heater operation, leading to perceived unnecessary power consumption and reduced cruising distance.
Innovation Solution
A vehicle display device and control system that calculates and displays the travelable distance before and after battery temperature rise control, allowing users to recognize the effect of temperature increase by displaying the first and second distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the heater operates to raise battery temperature, then the travelable distance increases, but the power storage ratio of the battery decreases
Solution Approach 1:
The display device provides feedback to the user by showing the relationship between heater operation, battery temperature rise, and travelable distance extension. This feedback mechanism helps users understand the beneficial effect of heater operation on extending travelable distance, thereby resolving the contradiction between power consumption and travelable distance extension.
2Use of energy by moving object
If the heater operates at low temperature to raise battery temperature, then the amount of electric power that can be discharged increases, but the user cannot recognize the effect
Solution Approach 1:
The display device acts as an intermediary between the heater operation and user perception. It translates the invisible battery temperature rise and its effect on dischargeable power into visible information showing the extension of travelable distance, thereby resolving the information loss and enabling user recognition of the temperature rise effect.
3Temperature
If the heater and air conditioner operate simultaneously, then the battery temperature rises and cabin is conditioned, but the load on the battery increases and travelable distance decreases
Solution Approach 1:
The system dynamically adjusts the operation timing of the heater and air conditioner based on battery temperature conditions. By making the operation schedule flexible and adaptive, the system optimizes the balance between temperature control requirements and travelable distance, resolving the contradiction between simultaneous operation benefits and travelable distance reduction.
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
Enables users to visually understand the impact of battery temperature rise on travel distance, facilitating informed decisions on heater operation.
Implementation Method 1
a heater configured to heat the battery by operating with the electric power from the battery
Data Source
AI summary
A vehicle display device includes a traveling motor, a battery that exchanges electric power with the motor, and a heater that operates with electric power from the battery and heats the battery, is used in a battery electric vehicle where a temperature rise control for operating a heater is performed so that a temperature of a battery rises to a target temperature at a low temperature, and displays information. The vehicle display device displays a first distance calculated as a travelable distance of a battery electric vehicle when the temperature rise control is executed, and the temperature rise control is not executed based on a current state of the battery, and a second distance calculated as a travelable distance of a battery electric vehicle when the temperature rise control is completed based on a predicted state predicted as a state of the battery when the temperature rise control is completed.