Fuel cell module

Abstract

A fuel cell module of the present invention includes a fuel cell stack and a power converter incorporated respectively in the casing. The power converter has a printed circuit board and a switching semiconductor. The printed circuit board is arranged between the switching semiconductor and the fuel cell stack, thereby cutting off the radiation of heat from the fuel cell stack to the switching semiconductor, and reducing the conduction loss of the switching semiconductor. Further, a high frequency transformer equipped with a Ferrite core is arranged on the side of the fuel cell stack of the printed circuit board, thereby reducing the iron loss in the high frequency transformer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross section view representing a fuel cell module having the boost converter as a embodiment 1;

FIG. 2 is a structure diagram representing the overview of the fuel cell module as a embodiment 1;

FIG. 3 is a circuit diagram representing the circuit configuration of the boost converter be applying a fuel cell module as a embodiment 1; and

FIG. 4 is a diagram representing the temperature characteristics of the element loss inside the fuel cell module as a embodiment 1.

Claims

1. A fuel cell module, comprising: a fuel cell stack;a DC-DC converter to control the electrical output of said fuel cell stack; anda casing incorporated said fuel cell module and said DC-DC converter,wherein said DC-DC converter includes an electrical circuit-mounted substrate provided with the switching semiconductor, and said electrical circuit-mounted substrate is arranged between said fuel cell stack and said switching semiconductor.

2. A fuel cell module according to claim 1, wherein said DC-DC converter is equipped with heat radiation apparatus, and said switching semiconductor is arranged between said electrical circuit-mounted substrate and heat radiation apparatus.

3. A fuel cell module according to claim 1, wherein said switching semiconductor is either a power MOSFET or IGBT.

4. A fuel cell module according to claim 1, wherein said fuel cell module is a polymer electrolyte fuel cell module.

5. The power generation system using the fuel cell module according to claim 1, wherein said heat radiation apparatus is provided with a cooling medium.

6. A fuel cell module, comprising: a fuel cell stack;a DC-DC converter to control the electrical output of said fuel cell stack; anda casing incorporated said fuel cell module and said DC-DC converter,wherein said DC-DC converter is equipped with a switching semiconductor, an inductor, a transformer, and an electrical circuit-mounted substrate provided with said switching semiconductor, said inductor and said transformer;said electrical circuit-mounted substrate is arranged between said fuel cell stack and said switching semiconductor; andsaid transformer and inductor are arranged between said fuel cell stack and said electrical circuit-mounted substrate.

7. A fuel cell module according to claim 6, wherein said inductor and transformer have a Ferrite magnetic core.

8. A fuel cell module according to claim 6, wherein said fuel cell module is a polymer electrolyte fuel cell module.

9. The power generation system using the fuel cell module according to claim 6, wherein said heat radiation apparatus is provided with a cooling medium.

10. A fuel cell module, comprising: a fuel cell stack;a DC-DC converter to control the electrical output of said fuel cell stack; anda casing incorporated said fuel cell module and said DC-DC converter,wherein said DC-DC converter is equipped with a switching semiconductor, a smoothing capacitor, and an electrical circuit-mounted substrate provided with said switching semiconductor and said smoothing capacitor;said electrical circuit-mounted substrate is arranged between said fuel cell stack and said switching semiconductor; andsaid smoothing capacitor is mounted on the same side of the electrical circuit-mounted substrate as that of the switching semiconductor.

11. A fuel cell module according to claim 10, wherein said switching semiconductor is either a power MOSFET or IGBT.

12. A fuel cell module according to claim 10, wherein said smoothing capacitor is an electrolytic capacitor.

13. A power generation system using the fuel cell module according to claim 10, wherein said heat radiation apparatus is provided with a cooling medium.