JPH09283166A - Method for fitting voltage measuring output terminal for fuel cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate and secure the fitting by connecting one end of an output terminal to a circular hole provided in a carbon plate of each cell, and connecting the other end of the output terminal nundle to a voltage measuring device. SOLUTION: With this fitting method, since simple circular holes 4 are provided in place of screw working of a carbon plate 11 of each cell of a fuel cell stack, working is facilitated, working time is shortened, and strength is improved, and since one end of an output terminal 6 is connected to the circular hole 4 with a banana clip 5, fitting is facilitated. Consequently, the lifetime of a fitting part is prolonged. Furthermore, the other end of a bundle of the output terminals 6 is connected to a voltage measuring device through a connector 7, and the connection is facilitated and secured. As a result, fitting workability of the voltage measuring terminal of a battery is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output terminal mounting method for measuring the voltage of a fuel cell.

[0002]

2. Description of the Related Art A fuel cell is evaluated by attaching an output terminal to each cell and measuring the voltage.
The size of the stack tends to increase to 50 cells and further to 50 cells or more, and moreover, multiple stacks are being evaluated in parallel.

In the evaluation of a fuel cell, in order to attach an output terminal to each cell, a carbon plate 11 of each cell is screwed as shown in FIG.
I had screwed 13 on.

In such an output terminal mounting method, screwing is troublesome, strength is weak, and life is short. In addition, it is troublesome to screw the crimp terminal, and workability is poor.

[0005]

Therefore, the present invention provides a method for mounting an output terminal for voltage measurement of a fuel cell, which is easy to process, has high strength, has a long life, is easy to install, and has good workability. It is what

[0006]

A method for mounting a voltage measuring output terminal of a fuel cell according to the present invention for solving the above-mentioned problems is a method of forming a round hole in a carbon plate of each cell of a fuel cell stack to form a round hole. One end of the output terminal is connected with a banana clip, and the other end of the output terminal bundle is connected with a voltage measuring device through a connector.

As described above, according to the method for mounting the output terminal for measuring the voltage of the fuel cell of the present invention, the carbon plate of each cell of the fuel cell stack is screwed, and a simple round hole is formed. It has high strength, and since one end of the output terminal is connected to the round hole with a banana clip, installation becomes easy. Therefore, the life of the mounting portion is extended. Further, since the other end of the output terminal bundle is connected to the voltage measuring device via the connector, the connection is easy and reliable.
Therefore, disconnection and connection when converting the fuel cell for voltage measurement can be easily performed.

Thus, the workability of mounting the output terminals for measuring the voltage of the fuel cell is remarkably improved, and when the carbon plates of each cell of the plurality of stacks of the fuel cell are connected to a large number of output terminals, a parallel test can be conducted. The voltage can be measured as it is when necessary.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings, an embodiment of a method for mounting a voltage measuring output terminal of a fuel cell according to the present invention will be described. The thickness of each cell (50 cells) 2 of the fuel cell stack 1 shown in FIG. As shown in FIG. 2, two 8 mm round holes 4 each having a hole diameter of 4 mm are drilled in the 8 mm gas impermeable carbon plate 3, and one end of the output terminal 6 is connected to the round holes 4 by a banana clip 5 as shown in FIG. The other end of the bundled output terminals 6 was connected to a voltage measuring device (not shown) via a connector 7 as shown in FIG.

In this way, the fuel cell equipped with the output terminal for voltage measurement has an operating condition of 60 to 90 ° C., hydrogen and oxygen (or air) supply, and an operating time of 5 hours × 10 to 20 times. The voltage is constantly measured to evaluate the initial characteristics.

As described above, according to the method of mounting the voltage measuring output terminal of the fuel cell of the embodiment, the screwing on the carbon plate 3 of each cell 2 of the fuel cell stack 1 is stopped and a simple round hole 4 is opened. The processing is easy, the processing time is short, the strength is strong, and since one end of the output terminal 6 is connected to the round hole 4 by the banana clip 5, the mounting becomes easy. Therefore, the life of the mounting portion is extended. Furthermore, since the other end of the bundle of output terminals 6 is connected to the voltage measuring device (not shown) via the connector 7, the connection is easy and reliable. Therefore, disconnection and connection can be easily performed when converting the fuel cell for voltage measurement.

[0012]

As can be seen from the above description, according to the method of mounting the output terminal for voltage measurement of the fuel cell of the present invention, the processing is easy, the processing time is short, the strength is strong, and the mounting is easy. The attachment part has a long life, and the connection with the voltage measuring device is easy and reliable, and the disconnection and connection when converting the fuel cell for voltage measurement can be easily performed. Therefore, the mounting workability of the output terminal for voltage measurement is remarkably improved, and moreover, if the carbon plates of each cell of a plurality of stacks of the fuel cell and a large number of output terminals are connected, a parallel test can be performed, and it can be performed as it is when necessary. Can measure voltage.

[Brief description of drawings]

FIG. 1 is a diagram showing a carbon plate of each cell in a fuel cell stack.

FIG. 2 is a view showing a state in which a voltage measuring output terminal is attached to the carbon plate shown in FIG.

FIG. 3 is a diagram showing the bundle of output terminals shown in FIG. 2 and a connector at the other end.

FIG. 4 is a diagram showing a conventional method of mounting an output terminal.

[Explanation of symbols]

 1 Fuel cell stack 2 Cell 3 Carbon plate 4 Round hole 5 Banana clip 6 Output terminal 7 Connector

Claims (1)

[Claims] 1. A round hole is made in a carbon plate of each cell of a fuel cell stack, one end of an output terminal is connected to the round hole by a banana clip, and the other end of the output terminal bundle is connected to a voltage measuring device through a connector. A method for mounting an output terminal for measuring a voltage of a fuel cell, which is characterized by connecting.