EV Charging Meter Correlation for Accurate Home Billing
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Solution Overview
Problem
Existing methods fail to accurately and efficiently determine the quantity of electrical energy used for charging operations in private households, particularly for electric vehicles, making it complex to bill employees for fuel costs incurred during vehicle charging.
Innovation Solution
A method that involves receiving metering data from a calibration-compliant electricity meter and charging operation data from the vehicle, using a Wide Area Network to determine the total quantity of energy delivered during a charging operation, with optional verification through a smart meter gateway, allowing for accurate and efficient billing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional fuel card or receipt methods are used for charging operations, then billing complexity is reduced, but measurement precision and reliability of energy quantity determination deteriorates
Solution Approach 1:
The patent introduces an intermediary system that collects metering data from the electricity meter and charging operation data from the vehicle, then processes and correlates this data to determine the quantity of energy delivered. This intermediary processing layer resolves the contradiction by providing accurate measurement through data correlation while keeping the billing interface simple.
Solution Approach 2:
The system implements feedback mechanisms where metering data and charging operation data are continuously collected, processed, and used to determine charging information that can be billed. The feedback loop ensures accurate energy quantity determination by cross-validating data from multiple sources (electricity meter and vehicle systems).
2Measurement precision
If no dedicated metering system is used for charging points, then device complexity is reduced, but measurement precision and reliability of energy determination deteriorates
Solution Approach 1:
The system uses a universal data processing approach that can handle both simple receipt-based billing and complex metering data correlation through a single integrated method. The same system architecture processes different types of input data (metering data, charging operation data, or simple receipts) to provide consistent billing functionality, making the infrastructure adaptable rather than requiring dedicated complex metering for each case.
Solution Approach 2:
The patent allows for partial implementation of metering capabilities. A dedicated electricity meter with calibration compliance is used specifically for the charging point to ensure accurate measurement, while the overall system can function with varying degrees of metering infrastructure depending on the specific deployment scenario.
3Reliability
If calibration-compliant electricity meters are deployed at charging points, then measurement precision and reliability improve, but device complexity and infrastructure requirements worsen
Solution Approach 1:
The system introduces an intermediary data processing layer that collects, validates, and correlates data from calibration-compliant electricity meters with charging operation data from vehicles. This intermediary processing ensures reliable and accurate charging operation determination while managing the complexity of integrating multiple data sources through a unified processing approach.
Data Source
AI summary
A method for determining charging information with regard to a charging operation at a non-public location includes receiving metering data from an electricity meter for a charging point, the electricity meter being configured to capture metering data relating to a charging current provided at the charging point. The method also includes receiving, from a vehicle, charging operation data with regard to a charging operation of the vehicle at the charging point, the charging operation data including time information with regard to a beginning and an end of the charging operation. The method also includes determining, based on the metering data and the charging operation data, charging information about a total amount of power which has been provided by the charging point to the vehicle during the charging operation.