Power metering device for a power battery

Abstract

The invention relates to a power battery power metering device, which includes a power battery for supplying power to a driving motor and charged by a DC charger, and a current sampling module for collecting the charging and discharging current of the power battery, which is used for collecting the charging and discharging current of the power battery. A voltage sampling module for discharging voltage, an electric energy metering module for converting the output signals of the voltage sampling module and the current sampling module and outputting to the processor module, for reading the data measured by the electric power metering unit and charging and discharging the power battery A processor module for processing status data information and an external interface for data transfer. The invention solves the problems of small measuring range and low precision of general measuring devices, and improves the accuracy of expense settlement.

Description

technical field [0001] The invention relates to the technical field of measurement, and more particularly to a power battery power metering device, which is suitable for the power battery power measurement of the legal billing function. Background technique [0002] As a clean and environmentally friendly green vehicle, electric vehicles have received great attention from governments and auto manufacturers around the world. Electric vehicles are powered by electricity, can achieve "zero emissions" and have low noise, and are an important means to solve energy and environmental problems. The charger provides energy supply for the operation of the electric vehicle, and there is no legal metering device for the measurement and display of the single and cumulative charge and discharge of the electric vehicle battery pack inside the electric vehicle. The main use of mechanical watt-hour meters, not only can only measure electric energy in one direction, but also has defects such...

AI Technical Summary

Problems solved by technology

The charger provides energy supply for the operation of the electric vehicle, but there is no legal metering device placed inside the electric vehicle to measure and display the single and cumulative charge and discharge of the battery pack of the electric vehicle. It mainly uses mechanical watt-hour meters, which not only can only measure electric energy in one direction, but also have defects such as large power consumption, insufficient measurement accuracy, unsatisfactory error curves, regular calibration is required, and severe vibration during driving affects the measurement of mechanical components, etc. , unable to meet the electric energy metering requirements of electric vehicles

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