EV Charging Billing Using Power Range and Time Cost
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Solution Overview
Problem
Existing billing strategies for fast and supercharging piles in new energy vehicles focus solely on charging electricity quantity, failing to account for the higher timeliness of these charging methods, resulting in inaccurate billing.
Innovation Solution
A billing method that incorporates charging power range, duration, and vehicle model information to determine a comprehensive charging cost, including time and electricity costs, thereby reflecting the timeliness of fast and supercharging piles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If billing is based only on charging electricity quantity, then the billing system is simple, but the billing accuracy does not reflect the timeliness value of fast and supercharging piles
Solution Approach 1:
The billing system segments the charging cost into multiple independent components: electricity quantity cost (based on kWh) and time cost (based on charging duration). This segmentation allows each component to be calculated and billed separately, improving billing accuracy by reflecting both the energy consumed and the time value of fast/supercharging services, while keeping the overall system structure manageable through modular cost calculation
Solution Approach 2:
The billing system introduces new parameters (charging power range and charging duration) to transform the traditional single-parameter billing model. By incorporating charging duration as a billing parameter alongside electricity quantity, the system captures the timeliness value of fast and supercharging piles, enabling more accurate reflection of service quality without requiring complete system redesign
2Productivity
If charging time cost is included in billing, then the economic benefit model of fast and supercharging piles is improved, but the billing calculation complexity increases
Solution Approach 1:
The billing calculation is segmented into distinct steps: first determining electricity quantity cost from charging volume, then separately calculating time cost from charging duration and power range, and finally aggregating these components. This segmented approach enables the system to capture the economic benefit of fast/supercharging services through time-based pricing while maintaining clear, manageable calculation logic for each component
Solution Approach 2:
The system performs preliminary classification of charging power ranges before detailed cost calculation. By pre-defining power range intervals (e.g., 0-60kW, 60-120kW, 120-240kW, 240-480kW, 480kW+) and their corresponding time cost rates, the system simplifies the subsequent billing calculation process while accurately reflecting the timeliness value at different charging speeds
Data Source
AI summary
A billing method for vehicle charging includes: determining, based on a charging power range of a vehicle in a charging process and a charging duration of the charging power range, a charging time cost of the vehicle; determining, based on a charging electricity quantity, a charging electricity quantity cost of the vehicle; determining, based on the charging electricity quantity cost of the vehicle and the charging time cost of the vehicle, a charging cost of the vehicle; before charging the vehicle, determining, based on vehicle type information of the vehicle, a predicted power range of the vehicle; determining, based on the predicted power range and a power range unit price, a charging time cost unit price of the vehicle; and determining a sum of a preset electricity quantity unit price, an electricity quantity service unit price and the charging time cost unit price as a predicted charging unit price.