公开(公告)号：US20220077474A1

公开(公告)日：2022-03-10

申请号：US17530063

申请日：2021-11-18

Applicant: Taiyuan University of Science and Technology

Inventor： Fuqiang ZHAO ,  Zhiying GAO ,  Qingxue HUANG ,  Huiqing QI ,  Hongwei WANG

IPC: H01M8/026 ,  H01M8/0206

Abstract: A method for forming a flow channel on a metal bipolar plate of a fuel cell includes: pre-treating a metal polar plate; subjecting the metal polar plate to low-temperature heating; forming a flow channel on the metal polar plate by rolling; cutting an inlet and outlet for gas and cooling liquid on the metal polar plate; performing surface treatment on the metal polar plate; bonding two metal polar plates to form a metal bipolar plate; and trimming the metal bipolar plate. The flow channel is formed by two pre-forming and one truing, and design parameters of punches and dies of the rollers used are determined by calculation models.

公开(公告)号：US20230330791A1

公开(公告)日：2023-10-19

申请号：US18337114

申请日：2023-06-19

Applicant: Taiyuan University of Science and Technology

Inventor： Fuqiang ZHAO ,  Xiaolong XIE ,  Qingxue HUANG ,  Hugang TIAN ,  Yanlei ZHANG ,  Hongwei WANG

IPC: B23P15/28

CPC classification number: B23P15/28

Abstract: This application discloses a parametric design method of a roller tooth profile of a work roll for roll forming of a flow channel of a metal bipolar plate. The method includes: (1) an engagement transmission drawing is plotted according to depth h of the flow channel and a rolling period angle, where h=r1-r6. A first-half surface of a tooth consists of six segments, where the top surface segment, the upper half segment of the tooth side, the root segment, and the transition segments for the top corner and the root corner are arc curves, and the lower half segment of the tooth side is a straight line. (2) With the center O1 of the upper roller as the origin, a transverse end coordinate system is established, and the six segments of the left-half tooth are designed regarding parameters.