丰田第一代Mirai燃料电池电堆制造工程技术简介（精确控制间歇式狭缝涂布、电极无皱纹转移过程、极板表面处理与快拆测试工装）Fuel Cell Production Technologies for the Mirai FCV

Toshiyuki Suzuki

Tatsuya Kawahara

Mikio Wada

Masafumi Koizumi

Atsushi Nogi

Toru Oda

Abstract

A fuel cell （FC） stack consists of a widerange of materials， including various types of mechanical elements and electronicparts． In particular， the power generation cells inside the FC use many materialsthat are not found in conventional vehicle parts． In contrast to thedevelopment of previous fuel cell vehicles （FCVs）， which prioritized efforts toenhance the functional performance of the FC stack， the new mass－productionMirai FCV was developed as a normal industrial product with an emphasis on bothperformance and the applicability of manufacturing methods． This articledescribes several examples of continuous and sheet－by－sheet manufacturingmethods adopted in accordance with material characteristics to ensure highquality and productivity while reducing cost．

对比作者，可以发现Atsushi Nogi是唯一参与两代工程技术工艺开发的人员。

F1 external appearance of FC

F2 Cell configuration （outline）

F3 FC manufacturing process flow

和第二代相比，仅有一个点不同

F4 catalytic layer formation process

F5 side view outline of intermittent slot  die coating equipment

F6 outline of valve for intermittent  coating operation

F7 intermittent slot die coating defects

F8 dimension dispersion before and after  development

F9 outline of MEA joining process

F10 CCM wrinkle

F11 concave roller

F12 relationship between concave roller  and range of best quality conditions

F13 CCM transfer state with different  rollers

F14 images of PAC cross section （left）  and nanostructure（right）

F15 contact resistance

F16 outline of plasma CVD process  equipment

F17 conventional method （left） and one by  one production method （right）

F18 appearance of plasma emissions conventional  method （left） and developed method （right）

F19 relationship between plasma emission  intensity and process time

F20 pareto chart of cell performance  inspection

F21 outline of indirect cooling plate

F22 current voltage and temperature  voltage characteristics

F23 correlation between inspection  performance for direct and indirect cooling systems