Energy management method of vehicle-mounted fuel battery hybrid power system
A technology of hybrid power system and fuel cell, which is applied in the direction of hybrid electric vehicles, motor vehicles, transportation and packaging, etc. It can solve the problems of not mentioning the power distribution method of fuel cells and batteries, and not explaining the acquisition of battery SOC, etc., so as to prevent over Charge and discharge, good performance
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[0059] Below in conjunction with accompanying drawing, the technical scheme proposed by the present invention is further elaborated and illustrated:
[0060] The fuel cell and lithium battery hybrid power system structure of the present invention is as follows figure 1 As shown, the fuel cell is connected to the system bus in parallel through a unidirectional DC / DC converter, and the lithium battery is connected to the system bus in parallel to provide energy for the load; during operation, the fuel cell system is the main power source , the lithium battery provides or absorbs additional power.
[0061] The present invention is an energy management method for a vehicle-mounted fuel cell hybrid power system, and the specific implementation steps are as follows:
[0062] Step 1: Establish a hybrid system model;
[0063] (1). Fuel cell voltage model
[0064] v cell =E nernst -v act -v ohm -v conc (5)
[0065]
[0066]
[0068] ...
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