Vehicle-mounted hydrogen bottle three-stage filling method based on intelligent prediction and control

Abstract

The invention relates to a vehicle-mounted hydrogen bottle three-stage filling method based on intelligent prediction and control, and belongs to the field of fuel cell automobiles. The problem of single low-efficiency hydrogenation of a vehicle-mounted hydrogen bottle at present is solved through intelligent prediction and control. Intelligent prediction is carried out before actual filling, a group of switching coefficients needed when a medium-low pressure hydrogen storage bottle is filled with hydrogen are determined according to the initial residual pressure of the gas cylinder and the current ambient temperature, and are combined with a precooling system to calculate and predict a most rapid hydrogenation scheme, a most economical hydrogenation scheme and two corresponding hydrogenation scheme target temperature rise curves meeting safety conditions, and finally output of the precooling system is controlled through a control algorithm in the real-time filling process, an actual temperature rise curve is promoted to fit the target temperature rise curves, and the rapid, efficient and safe hydrogenation target is achieved.

Description

technical field [0001] The invention belongs to the field of fuel cell vehicles and relates to a three-stage filling method for vehicle-mounted hydrogen cylinders based on intelligent prediction and control. Background technique [0002] At present, environmental and energy issues are becoming more and more prominent, and the further development of traditional vehicles is greatly restricted, which greatly promotes the research and development of new vehicles, and fuel cell vehicles have become a strong competitor for new vehicles due to their various advantages. As the main energy source of fuel cell vehicles, hydrogen is mainly stored in the form of high-pressure gas, and the safety of hydrogen in the fueling process limits the commercial development of fuel cell vehicles. Safe, fast and efficient filling, high-pressure hydrogen fast filling has become a hot research topic at home and abroad. During the rapid hydrogenation process of the vehicle-mounted hydrogen cylinder, ...

AI Technical Summary

Problems solved by technology

During the rapid hydrogenation process of the vehicle-mounted hydrogen cylinder, due to the unique negative Joule-Thompson effect of hydrogen and the rapid compression of hydrogen, the internal temperature of the cylinder will rise sharply, causing safety hazards

The traditional hydrogen filling scheme is single, inefficient and non-selective, without considering the switching point of hydrogen filling in low- and medium-pressure storage hydrogen cylinders, and the refrigeration output is not optimized during the filling process, resulting in low economic efficiency

Images