Abstract:
A simulator is used for developing a solid oxide fuel cell (SOFC). Through the simulator, electrical characteristics of the SOFC are examined. Thus, with the simulator, cost for developing the SOFC is saved.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to simulating a solid oxide fuel cell (SOFC); more particularly, relates to replacing a SOFC through a simulation to obtain electric characteristics of the SOFC and thus to save cost on developing the SOFC. 
       DESCRIPTION OF THE RELATED ART 
       [0002]    Fuel cell has high efficiency on supplying power with relatively low cost. The fuel cell mainly uses hydrogen and oxygen to process an electrical reaction for producing electricity. Different fuel cells supplies different electricity to small facilities or even a big power plant. Among the fuel cells, SOFC has the best efficiency. Moreover, SOFC can be operated at a high temperature between 600 Celsius degrees (° C.) and 1000° C., and has a high-temperature exhaust. 
         [0003]    However, its technology threshold is the highest as well. Unit cost of SOFC is pretty high. And its structure is not strong that it can be broken and not afford to serious operations. In addition, tests during developing SOFC are quite often. A big change on a factor of the SOFC may ruin the SOFC. As a result, cost for developing a SOFC is high. Hence, the prior art does not fulfill all users&#39; requests on actual use. 
       SUMMARY OF THE INVENTION 
       [0004]    The main purpose of the present invention is to replace a SOFC through a simulation to obtain electric characteristics and thus to save cost for developing the SOFC. 
         [0005]    To achieve the above purpose, the present invention is a simulator of SOFC for electric characteristics, comprising a contacting unit comprising an anode part and a cathode part; a sensing unit connecting to the anode part and the cathode part; a sense analysis unit connecting to the sensing unit; and a load unit connecting to the sense analysis unit, where the sense analysis unit comprises a first A/D converter connecting to the sensing unit, an analysis unit connecting to the first A/D converter, a D/A converter connecting to the analysis unit, a power supply unit connecting to the D/A converter and a second A/D converter connecting to the power supply unit. Accordingly, a novel simulator of SOFC for electric characteristics is obtained. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in conjunction with the accompanying drawings, in which 
           [0007]      FIG. 1  is the view showing the preferred embodiment according to the present invention; and 
           [0008]      FIG. 2  is the view showing the simulation using the preferred embodiment. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0009]    The following description of the preferred embodiment is provided to understand the features and the structures of the present invention. 
         [0010]    Please refer to  FIG. 1  and  FIG. 2 , which are views showing a preferred embodiment according to the present invention and a simulation using the preferred embodiment. As shown in the figures, the present invention is a simulator of SOFC for electric characteristics, comprising a contacting unit  1 , a sensing unit  2 , a sense analysis unit  3  and a load unit  4 , where a solid oxide fuel cell (SOFC) is replaced with the present invention to test electric characteristics of the SOFC for saving cost for developing the SOFC. 
         [0011]    The contacting unit  1  comprises an anode part  11  and a cathode part  12 . 
         [0012]    The sensing unit  2  is connected with the anode part  11  and the cathode part  12  of the contacting unit  1 . 
         [0013]    The sense analysis unit  3  comprises a first analog/digital (A/D) converter  32 , an analysis unit  33 , a digital/analog (D/A) converter  34 , a power supply unit  35  and a second A/D converter  31 , where the analysis unit comprises a temperature calculation module  331 , a composition calculation module  332  and an electrochemical calculation module  333 . 
         [0014]    Thus, a novel simulator of SOFC for electric characteristics is obtained. 
         [0015]    On using the present invention, a device using battery  1  is connected with the contacting unit  1 , where fuels in the anode part  11  and the cathode part  12  of the contacting unit  1  are processed with a combined combustion and mixing. The sensing unit  2  senses a pressure, a plurality of component ratios and a temperature of the anode part  11  and the cathode part  12  of the contacting unit  1 . Physical quantities of the pressure, the component ratios and the temperature are converted into digital signals by the first A/D converter  32  to be transferred to the analysis unit  33 . Then electric characteristics obtained are converted into analog signals by the D/A converter  34  to be transferred to the power supply unit  35 . Then a voltage and a current returned by the power supply unit  35  are converted into digital signals by the second A/D converter  31  to be transferred to the analysis unit  33 . Data are then compared, analyzed and calculated by the temperature calculation module  331 , the composition calculation module  332  and the electrochemical calculation module  333 . Then data are converted into analog signals by the D/A converter  34  to be transferred to the power supply unit  35 . And the analysis unit  33  controls supplies of voltage and current through an iterative operation at time intervals. Finally, a voltage and a current are outputted to the load unit  4  to be adjusted. 
         [0016]    To sum up, the present invention is a simulator of SOFC for electric characteristics, where a SOFC is replaced through a simulation to obtain electric characteristics and thus to save cost on testing the SOFC. 
         [0017]    The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.