Charging Pile Metering Backup for External Meter Faults
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Solution Overview
Problem
The controller fails to calculate the cost due to the failure or communication breakdown between the external electric meter and the charging pile, resulting in an inability to acquire charging information.
Innovation Solution
A method and device that acquire electric meter information, including operation state information, to determine if the external electric meter is in a fault state, and calculate the electricity output by the charging pile using the charging module's electric energy output data when the external electric meter is faulty, allowing for continuous cost calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the external electric meter is used to acquire charging information, then the cost calculation can be performed, but the system reliability deteriorates when the external electric meter fails or communication fails
Solution Approach 1:
The charging pile's controller performs self-measurement of charging electricity amount using its own charging module and metering module, eliminating dependency on the external electric meter. The controller acquires electric energy output data directly from the charging module and calculates the charging electricity amount independently, enabling the system to serve itself for measurement purposes.
Solution Approach 2:
The controller acts as an intermediary between the charging module and the cost calculation function. It receives electric energy output data from the charging module, processes this data through the metering module to determine charging electricity amount, and uses this information for cost calculation, thereby mediating the measurement process without relying on external devices.
2Reliability
If the controller relies on the external electric meter for charging information, then the device complexity is low, but the information acquisition reliability worsens when communication fails
Solution Approach 1:
The controller proactively acquires electric energy output data from the charging module during the charging process and pre-calculates the charging electricity amount using the metering module. This preliminary action ensures that charging information is already available and verified before cost calculation is needed, eliminating delays caused by communication failures with external meters.
Solution Approach 2:
The controller implements a feedback mechanism where the metering module continuously monitors the electric energy output data from the charging module and adjusts the charging electricity amount calculation based on actual measured values. This feedback loop ensures accurate and reliable information acquisition independent of external electric meter communication status.
Data Source
AI summary
A method and a device for acquiring a charging electricity amount, and an electronic device are provided. When a controller determines based on at least operation state information of an external electric meter that the external electric meter is in a fault state, the first amount of electricity, outputted by the charging pile when the external electric meter is in the fault state, can be calculated based on at least first electric energy output data of the charging pile acquired by the charging module of the charging pile when the external electric meter is in the fault state. That is, the amount of electricity consumed by the charging pile can be calculated even when the external electric meter is in the fault state, so that the controller calculates the cost based on the amount of electricity consumed by the charging pile.