Electric Vehicle Driving Guide for Battery-Aware Distance and Speed
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Solution Overview
Problem
Drivers of electric vehicles face challenges in determining whether they can complete a mission and at what speed based on the state of their electric battery power without clear guidelines, leading to potential premature battery discharge or continued operation beyond safe limits.
Innovation Solution
A driving guide setting system for electric vehicles that includes a terrain acquisition unit, a calculation unit, a battery state estimation unit, and a distance/speed calculation unit, which acquires and processes information about the vehicle's location, charging sources, and terrain to estimate drivable distance and speed limits, considering factors like fuel efficiency and battery state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver arbitrarily determines the required battery charge amount based on experience, then the driver can make quick decisions, but the electric operating device may be stopped from being driven against the driver's intention or the driver stops driving even though the device can be driven a longer distance
Solution Approach 1:
The system provides real-time feedback to the driver by calculating and displaying the drivable distance based on current battery charge and operating conditions. The notification unit informs the driver whether the drivable distance is sufficient to complete the remaining mission, enabling informed decisions without arbitrary judgment.
Solution Approach 2:
The system automatically monitors battery charge, calculates drivable distance considering air conditioner operating conditions and power consumption rates, and provides guidance without requiring driver intervention for complex calculations. The driver simply receives ready-made recommendations.
2Measurement precision
If the drivable distance is calculated considering air conditioner operating conditions, then the calculation accuracy is improved, but the calculation complexity increases
Solution Approach 1:
The calculation system is divided into separate functional units: a power consumption calculation unit that handles motor generator power consumption, an air conditioner power consumption addition unit, and a drivable distance calculation unit. Each unit performs a specific calculation step, making the overall complex calculation manageable and modular.
Solution Approach 2:
The system pre-calculates and stores power consumption rates for different air conditioner operating conditions (first power consumption rate when AC is off, second power consumption rate when AC is on). These pre-computed values are then used in real-time drivable distance calculations, reducing on-the-fly computational complexity.
Data Source
AI summary
Provided is a system for setting a driving guide of an electrical operating vehicle. The system may include: a terrain acquisition unit configured to acquire information about a current location of the vehicle, a charging location, an existing terrain, and a current terrain; a calculation unit configured to obtain first information about the vehicle based on the information acquired by the terrain acquisition unit; a battery state estimation unit configured to estimate an amount of available battery power of the vehicle; and a distance/speed calculation unit configured to calculate a drivable distance and drivable speed for the mission vehicle based on the first information obtained by the calculation unit, the estimated amount of available battery power, and a distance from the current location to a destination of the vehicle.