EV Battery-Vehicle Matching Interface for Used Car Selection
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Solution Overview
Problem
Existing systems fail to efficiently provide information about used electrically powered vehicles, particularly when the power storage device and vehicle body are sold separately, leading to numerous combinations that complicate the selection process.
Innovation Solution
A used car sales system that includes a management server and terminal, which displays compatible power storage devices and their performance ranges alongside vehicle bodies, preventing the display of non-compliant devices and allowing quick selection of desired vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the power storage device and vehicle body are sold separately, then the flexibility and adaptability of the sales system is improved, but the complexity of providing information about combinations increases
Solution Approach 1:
The management server pre-calculates and stores combination information (range, price) for all valid pairings of vehicle bodies and power storage devices before the user makes a selection. This preliminary preparation allows the system to quickly display relevant combination information without real-time complex calculations, thus maintaining flexibility while reducing operational complexity.
Solution Approach 2:
The management server acts as an intermediary that automatically handles the complex matching and information generation between vehicle bodies and power storage devices. It receives user selections, determines compatibility, calculates combination parameters, and displays the results, thereby simplifying the user interface while managing the underlying complexity.
2Loss of information
If multiple combinations of vehicle body and power storage device are displayed, then the information completeness is improved, but the time required for user selection increases
Solution Approach 1:
The system segments the display into two stages: first displaying compatible power storage devices for a selected vehicle body, then displaying the complete combination information (range, price) only after compatibility is confirmed. This segmented approach prevents overwhelming the user with all possible combinations at once while ensuring complete information is provided when needed.
Solution Approach 2:
The information display is dynamic and adapts to user interactions. When a user selects a vehicle body, the system dynamically updates to show only compatible power storage devices and their combination details. This dynamic filtering reduces the effective number of options the user must review while maintaining information completeness for valid combinations.
3Ease of operation
If all power storage devices are displayed for a vehicle body, then the ease of operation is improved, but the reliability of performance requirements decreases
Solution Approach 1:
The system applies different display characteristics to different power storage devices based on their compatibility with the selected vehicle body. Compatible devices are displayed with full information and selectable, while incompatible devices are either hidden or marked as non-selectable. This localized differentiation maintains ease of operation for valid choices while ensuring reliability by preventing selection of incompatible devices.
Solution Approach 2:
The system converts the potentially harmful effect of displaying incompatible devices (which would confuse users and violate performance requirements) into a beneficial filtering mechanism. By automatically identifying and excluding incompatible devices from the display, the system simplifies the user's decision-making process while ensuring only reliable, compatible combinations are presented.
Data Source
AI summary
A management server performs a process including: in response to receiving a request to display a selection screen, acquiring vehicle body information and displaying a selectable vehicle type; in response to receiving vehicle type selection information, specifying a selected vehicle type, extracting a compatible battery, calculating an estimated range, extracting a performance-unachieved battery, and displaying a selectable battery and the performance-unachieved battery; and, in response to receiving battery selection information, calculating a sales fee and displaying the sales fee.