Fuel cell assembling device and method

Abstract

The invention discloses a fuel cell assembling device. The device comprises a lower press-fitting plate, an upper press-fitting plate, an inner positioning tool and a pressure applying device, wherein the lower press-fitting plate is placed on the pressure applying device. During the assembly of a fuel cell, all components of a fuel cell stack are placed between the upper press-fitting plate and the lower press-fitting plate, and the upper press-fitting plate, all the components of the fuel cell stack and the lower press-fitting plate are positioned and fixed through the inner positioning tool. The invention also provides a fuel cell assembling method. According to the invention, the diagonal positioning is realized through the inner positioning tool, the stacking efficiency of the components of the fuel cell stack is improved while guaranteeing the alignment of the components of the fuel cell stack. The precision is high and the sealing fit deviation is small. The assembly and online detection of the fuel cell stack with a large number of units can be achieved only through a simple operation. Meanwhile, the test replacement can be directly carried out on an assembly table when the sealing test is unqualified, so that the assembly and test period of the stack can be remarkably shortened.

Description

technical field [0001] The invention relates to an assembly device and an assembly method of a proton exchange membrane fuel cell stack, belonging to the technical field of fuel cells. Background technique [0002] In the prior art, fuel cell integration mainly relies on experience and manual assembly, and fuel cell stack assembly is usually fastened after pressurization, which results in low process efficiency and many mistakes. Generally, after the end plate, buffer plate, conductive plate and multiple cells are pressed tightly, they are fastened by tie bars, and the sealing performance test is performed after the stack is taken out. [0003] Its disadvantages are: 1) When the stack seal test fails, it can only be moved back to the press-fitting station, and the pre-tightening force is removed for testing. Generally, the number of high-power stack cells is large and the quality is heavy, which may easily lead to repeated assembly. , or even damage the battery without the ...

AI Technical Summary

Problems solved by technology

[0003] Its disadvantages are: 1) When the stack seal test fails, it can only be moved back to the press-fitting station, and the pre-tightening force is removed for testing. Generally, the number of high-power stack cells is large and the quality is heavy, which may easily lead to repeated assembly. , or even damage the battery without the convenience of detection, and increase the cost; 2) The external positioning tool realizes the positioning and fixing of the stack through the side baffle, the precision is low, the deviation of the sealing fit is large, the contact resistance of the stack is increased, and the airtight The effect is poor, affecting the performance and service life of the stack

Images