Fuel cell and electric pile structure thereof

Abstract

The invention discloses a fuel cell and a galvanic pile structure thereof. The galvanic pile structure comprises a housing in which an accommodating cavity with an open upper end is defined; a reactor core which is arranged in the accommodating cavity; a first end plate and a second end plate, wherein the first end plate is arranged at the upper end of the reactor core, the second end plate is arranged at the lower end of the reactor core, a positioning piece is mounted on one side, facing the inner bottom surface of the shell, of the second end plate, a positioning blind hole is formed in the inner bottom surface of the shell, the positioning piece can be matched in the positioning blind hole, and the positioning piece and the positioning blind hole are arranged at an interval in the vertical direction. According to the electric pile structure of the fuel cell, the structure is greatly simplified, the production cost is reduced, the sealing performance of the electric pile structure is improved, and the risk of electric pile leakage is reduced.

Description

technical field [0001] The present invention relates to the field of battery technology, in particular to a fuel cell and its stack structure Background technique [0002] Fuel cells are widely used in real life. Out of the need to protect the main body of the fuel cell, that is, the core, a corresponding casing is designed outside the core according to the performance and safety requirements of the stack. During the operation of the core, the internal pressure will change due to thermal expansion and contraction. In related technologies, some structures adopt the structure of adding disc springs and floating plates in the shell to overcome the dimensional changes caused by pressure, which makes the internal structure complex and increases production costs. ; Some fix the core and the shell by adding positioning pins inserted inward from the outside of the shell, but the sealing in the shell cannot be guaranteed, which increases the risk of stack leakage. Thereby, above-men...

AI Technical Summary

Problems solved by technology

When the core is in operation, the internal pressure will change due to thermal expansion and contraction. In related technologies, some structures adopt the structure of adding disc springs and floating plates in the shell to overcome the dimensional changes caused by pressure, which makes the internal structure complex and increases production costs. ; Some fix the core and the shell by inserting positioning pins from the outside of the shell inward, but the sealing in the shell cannot be guaranteed, which increases the risk of stack leakage

Images