Rental EV Battery Display Using Allocated Capacity
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Solution Overview
Problem
The utilization rate of rental electric vehicles (EVs) is reduced because EVs cannot be rented in a fully charged state due to the time required for charging, leading to preference for EVs with high remaining battery levels and avoidance of those not fully charged.
Innovation Solution
A remaining battery level display method for rental EVs that sets an allocated battery capacity for users and displays remaining level information based on this allocation, showing the battery level as 100% at the start of rental and decreasing to 0% as the actual level decreases, thereby maintaining the illusion of a fully charged state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the actual remaining battery level is displayed to users, then the information accuracy is improved, but the utilization rate of rental EVs deteriorates because users prefer vehicles with high battery levels
Solution Approach 1:
The patent creates a virtual copy of the battery level information that differs from the actual physical state. The display shows a virtual battery level that is reset to 100% at the start of each rental period, while the actual battery level continues to decrease. This copy allows users to perceive the vehicle as fully charged without altering the physical battery state, thereby maintaining both information accuracy for the user and high utilization rates for the rental service
2Productivity
If EVs are rented without full charging to improve utilization rate, then the productivity is improved, but the user satisfaction deteriorates due to preference for fully charged vehicles
Solution Approach 1:
The patent introduces an intermediary layer between the actual battery state and the user perception. The display system acts as a mediator that translates the actual decreasing battery level into a virtual battery level that resets to 100% for each rental. This intermediary representation satisfies user preference for fully charged vehicles while allowing the service to operate with partially charged vehicles, thereby improving utilization rates
Data Source
AI summary
A remaining battery level display method is a method of displaying a remaining battery level of a rental electric vehicle, and includes: setting an allocated battery capacity allocated to a user of the rental electric vehicle; and displaying, on a display of the rental electric vehicle, remaining level information based on the allocated battery capacity. The displaying of the remaining level information includes: displaying, as 100%, a remaining battery level at a start of rental to the user, displaying, as 0%, a remaining battery level lower than an actual remaining battery level at the start of the rental by the allocated battery capacity, and displaying the remaining battery level so as to decrease between 100% and 0% in accordance with a decrease in the actual remaining battery level.