Fuel cell hybrid power source system
A technology of fuel cells and hybrid power sources, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of power loss, lower system efficiency, large volume and weight, etc., and achieve high efficiency, small volume, and small weight Effect
Active Publication Date: 2012-05-30
武汉理工大学教育发展基金会
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Problems solved by technology
It can be seen from the above that there are two DC / DC converters in the existing fuel cell hybrid power system, resulting in a large volume and weight of the system; the output of the fuel cell and the supercapacitor supply power to the load after passing through the DC / DC converter, and the The DC / DC converter will generate a certain power loss and reduce the efficiency of the system
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Embodiment Construction
[0016] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.
[0017] Such as figure 1 As shown, the fuel cell hybrid power system of the present invention includes a fuel cell 210 , a supercapacitor 220 , a storage battery 230 , a controller 300 and a cascaded power converter 400 .
[0018] The supercapacitor 220 is connected in series with the storage battery 230 , and the branch connected in series is connected in parallel with the fuel cell 210 and the load 100 . Specifically, the negative pole of the supercapacitor 220 is connected to the positive pole of the storage battery 230 , and the positive pole is connected to the positive pole of the fuel cell 210 . The negative pole of the fuel cell 210 is connected to the negative pole of the storage battery 230 .
[0019] The controller 300 is partially installed on the storage battery 230, and is connected to the fuel cell 210, th...
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The invention discloses a fuel cell hybrid power source system comprising a fuel cell, a super capacitor, a storage cell, a cascade power converter and a controller, wherein the cascade power converter comprises a first inductance, a second inductance, a first MOSFET tube, a second MOSFET tube, a first diode, a second diode, a third diode and a fourth diode, wherein the first inductance is mutually connected with the second inductance, the first MOSFET tube and the second MOSFET tube are mutually connected, and the first diode, the second diode, the third diode and the fourth diode are mutually connected. The controller obtains the temperature signal of the storage cell, the voltage signal and the current signal of the super capacitor, the storage cell and the fuel cell and the current signal of a load, and controls the first MOSFET tube and the second MOSFET tube to be conducted and switched on and off according to the obtained signal. The system does not need two DC / DC convertors and only needs one cascade power converter, so that the system has small volume, light weight and high system efficiency.
Description
technical field [0001] The invention relates to a hybrid power system, which is a hybrid power system composed of a fuel cell, a supercapacitor and a storage battery. Background technique [0002] A fuel cell is an electrochemical device that uses hydrogen as a fuel and oxygen as an oxidant to directly convert the chemical energy of the fuel into electrical energy. It is not limited by the Carnot cycle. As long as there are enough hydrogen and oxygen, it can be continuously It has the characteristics of high energy, low noise, no pollution, zero emission and high energy conversion efficiency. It can be widely used in various fields such as small power stations, communication power supplies, robot power supplies, automobiles, power systems, and family life. Fuel cell technology is considered to be the preferred clean and efficient power generation technology in the 21st century. Fuel cells can be divided into alkaline fuel cells, phosphoric acid fuel cells, proton exchange m...
Claims
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IPC IPC(8): H02J7/34
Inventor 刘莉全书海陈启宏狄艾威谢长君张立炎石英
Owner 武汉理工大学教育发展基金会