Hydrogen consumption measurement system of fuel cell electric vehicle

摘要

The present invention relates to a hydrogen consumption measurement system of a fuel cell electric vehicle, which is installed in an electric vehicle provided with a fuel cell, and includes a weight sensor installed in the hydrogen tank to measure a weight change of a hydrogen tank for supplying hydrogen to the fuel cell. A weight-based measuring unit provided with a first calculation module for calculating a first estimated value of the amount of hydrogen contained in the hydrogen tank based on the measurement information provided from the weight sensor, and hydrogen supplied from the hydrogen tank to the fuel cell; A flow rate sensor installed in a supply pipe and measuring a flow rate of hydrogen supplied to the fuel cell; and a second calculation module calculating a second estimated value of the amount of hydrogen contained in the hydrogen tank based on measurement information provided from the flow rate sensor. Flow rate-based measuring unit and a pressure and temperature inside the hydrogen tank installed in the hydrogen tank A temperature-pressure-based measuring unit provided with a pressure temperature sensor for measuring ignition, a third calculation module for calculating a third estimated value of the amount of hydrogen contained in the hydrogen tank based on the measurement information provided from the pressure temperature sensor, And a real capacity estimation module for calculating the actual capacity of hydrogen contained in the hydrogen tank based on the first to third estimation values calculated by the first to third calculation modules and providing the calculated actual capacity to a manager. The hydrogen consumption measuring system of the fuel cell electric vehicle according to the present invention calculates the actual capacity of hydrogen using not only the temperature pressure measurement value but also the weight measurement value of the hydrogen tank and the flow rate of hydrogen supplied to the fuel cell. The advantage is that an accurate value can be obtained.