Internal combustion engine and fuel cell combined power generation device and control method

Abstract

The invention discloses an internal combustion engine and fuel cell combined power generation device and a control method. The internal combustion engine and fuel cell combined power generation devicecomprises an internal combustion engine power generation assembly, a fuel cell power generation assembly, a voltage coordination device, an internal combustion engine tail gas kinetic energy recoveryassembly, a fuel cell tail gas kinetic energy recovery assembly and a pressurization air inlet assembly; and couplers are arranged between the two kinetic energy recovery assemblies and the pressurization air inlet assembly, and the kinetic energy recovery assemblies drive the pressurization air inlet assembly to work through the couplers after kinetic energy of tail gas of the kinetic energy recovery assemblies is recovered. The control method comprises four steps of starting the internal combustion engine power generation assembly, starting the fuel cell power generation assembly, performing combined power generation by the internal combustion engine power generation assembly and the fuel cell power generation assembly, and performing power supply by matching the voltage coordination device with voltage. The internal combustion engine and fuel cell combined power generation device and the control method have the beneficial effects that the production and manufacturing cost is low, and energy loss caused by use of a compressor is avoided; the energy utilization rate is improved, and the emission is reduced; and the real-time opening degree of a valve in each area is controlled, and the advantages of high precision, quick response and high stability are achieved.

Description

technical field [0001] The invention relates to a hybrid power generation device and a control method, in particular to a combined power generation device and a control method of an internal combustion engine and a fuel cell, and belongs to the technical field of hybrid power sources. Background technique [0002] The competition in the hybrid power industry is fierce. The hybrid power generation device with the internal combustion engine as the main power generation device and the battery as the auxiliary backup power source is currently the most widely used and most mature power generation system, and has the advantages of large power generation, stable operation, and energy supplementation at any time Advantage. However, the prices of metals such as cobalt and lithium used in batteries are high and uncontrollable. As the output of electric vehicles increases, the prices of cobalt and lithium will rise, so there is no condition for mass production to reduce costs. Increas...

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Problems solved by technology

[0006] Purpose of the invention: To solve the problems of low energy utilization efficiency of hybrid power generation devices in the prior art and difficulty in achieving coordinated control of different module components, to provide a combined power generation device with an internal combustion engine and a fuel cell and a control method

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