Method, system and device for controlling vehicle power device and storage medium

Abstract

The invention provides a method, a system and a device for controlling extended-range fuel cell vehicle power device and a storage medium. The method includes following steps: acquiring current neededtotal power of a whole vehicle and current charge state of an energy storing device; setting output power of a fuel cell as target output power according to the current needed total power of the whole vehicle and the current charge state of the energy storing device; determining output power of the energy storing device according to the target output power of the fuel cell and the current neededtotal power of the whole vehicle. The control method can determine the output power of the energy storing device according to the output power of the fuel cell and the needed total power of the wholevehicle to enable the energy storing device to be in a passive output state, so that the energy storing device can be in a working state of shallow charging and shallow discharging; compared with a conventional state of deep charging and deep discharging, service life of the energy storing device is prolonged.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a control method, system, device and storage medium for a power unit of an extended-range fuel cell vehicle. Background technique [0002] Pure electric vehicles generally use power batteries as a single power source, with simple structure and high system efficiency, and have developed rapidly in recent years. However, the energy density of traditional power batteries is still low, and the mileage of pure electric vehicles is generally short, making it difficult to reach the cruising level of traditional internal combustion engine vehicles. At the same time, the charging speed of pure electric vehicles is relatively slow, which brings great inconvenience to its use. [0003] Hydrogen-oxygen proton exchange membrane fuel cell is an electrochemical device that directly converts chemical energy into electrical energy. It has the advantages of high efficiency and zero em...

AI Technical Summary

Problems solved by technology

However, traditional fuel cell range extenders control the fuel cell to switch between several fixed power points through the state of charge (SOC, State of Charge) of the power battery. Due to the above control scheme, the output power of the fuel cell varies relatively quickly. Large, the power battery is in the working state of deep charge and deep discharge, so the service life of the fuel cell and power battery is short and the economy is poor

At the same time, in the above scheme, the power of the fuel cell range extender and the capacity of the power battery are only determined based on experience, and the reliability and accuracy are poor.

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