Electric Vehicle Power Management for Residual Battery Comparison
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Solution Overview
Problem
Users in car-sharing systems for electric vehicles cannot accurately recognize the relative increase or decrease in residual battery electric power when switching vehicles, leading to inefficient utilization of available electric power.
Innovation Solution
A vehicle electric power management apparatus that collects and processes residual battery power information, allowing users to select vehicles with sufficient power for their destination by calculating the incremental or decremental power changes between vehicles, and providing notifications and displays this information through a terminal unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If users switch vehicles in a car-sharing system without power comparison information, then vehicle changing is simple and quick, but users cannot recognize the relative increase or decrease in residual battery electric power
Solution Approach 1:
The patent introduces a vehicle power management apparatus as an intermediary system that collects residual power information from multiple vehicles and provides comparison data to users through a terminal device. This mediator enables users to make informed vehicle selection decisions without directly accessing complex battery management systems, thus resolving the information loss problem while maintaining system simplicity.
Solution Approach 2:
The system performs preliminary collection and processing of residual power information for all available vehicles before users need to make a selection. By pre-calculating and storing power comparison data, the system eliminates the need for real-time power queries during vehicle switching, thereby preventing information loss without adding operational complexity.
2Productivity
If users select vehicles without residual power information, then vehicle selection is fast and convenient, but available electric power cannot be effectively utilized
Solution Approach 1:
The vehicle power management apparatus pre-collects and stores residual power information for all vehicles in advance, so that when users need to select a vehicle, the comparison data is already prepared and immediately available. This preliminary action enables fast vehicle selection with full power information, achieving both high productivity and minimal time loss.
Solution Approach 2:
The system provides feedback to users by displaying the residual power levels of available vehicles through the terminal device. This feedback mechanism allows users to make informed decisions about vehicle selection based on their travel needs, ensuring effective utilization of available electric power without requiring extensive time for manual power assessment.
3Measurement precision
If the system provides detailed residual power information for all vehicles, then users can make informed selections, but the system complexity and data processing requirements increase
Solution Approach 1:
The vehicle power management apparatus serves as an intermediary that handles the complexity of collecting, processing, and storing detailed residual power information from multiple vehicles. By centralizing these functions in a dedicated power management system rather than embedding them in each vehicle or terminal device, the solution achieves precise power measurement while managing system complexity through functional separation.
Data Source
AI summary
A vehicle electric power management apparatus calculates a distance from a facility to a destination, from received vehicle-change request information. Distances through which vehicles parked at the facility can travel are calculated and vehicle information on parked vehicles capable of traveling through a distance longer than the distance to the destination are selected as next-useable vehicles in descending order of a residual amount of available battery power. A surplus distance indicating how far in kilometers the selected vehicles can each further travel on beyond the destination away from the facility is additionally calculated and this information is transmitted. After the selection of the next-useable vehicles by a computer of the facility, increment/decrements in the residual amount of available battery power between each selected next-useable vehicle and the vehicle that a user has used to arrive at the facility, and incentive information are calculated and displayed at the computer.