Manifold block for fuel cell stack

摘要

The present invention provides a manifold block for a fuel cell stack, coupled to a fuel cell stack module and having a gas passage and a cooling water passage. The manifold block includes an insulating member and an insulating cover. The insulating member is inserted into the cooling water passage and contacts an inner surface of the cooling water passage. The insulating member has a tube-like shape and electrically insulates the inner surface of the cooling water passage. The insulating cover is inserted into the cooling water passage and contacts an inner surface of the insulating member. The insulating cover fixes and protects the insulating member.

主权项

1. A manifold block for a fuel cell stack, coupled to a fuel cell stack module, the manifold block attached to an outer side of an end plate of the fuel cell stack with gasket disposed there between, comprising:
a gas passage and a cooling water passage; an insulating member inserted into the cooling water passage and contacting an entire inner surface of the cooling water passage, the insulating member having a pre-formed tube-like shape and configured to electrically insulate the cooling water passage; and an insulating cover inserted into the cooling water passage and contacting an entire inner surface of the insulating member, the insulating cover configured to fix and protect the insulating member, wherein the insulating cover has a two-part structure at a passage insertion part thereof that is inserted into the cooling water passage, and wherein each part of the insulating cover is inserted into the cooling water passage at opposing sides of the cooling water passage to be connected to each other such that the entire inner surface of the insulating member is covered by the insulating cover.