Patent ID: 11936076
Assignee: OSAKA GAS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC H

Claim 0:
1. A metal support for an electrochemical element,
the metal support including a plate face and having a plate shape as a whole,
the metal support being provided with a plurality of penetration spaces that pass through the metal support from a front face to a back face, the front face being a face to be provided with an electrode layer,
a region of the front face provided with the penetration spaces being a hole region,
the metal support satisfying a condition that a warping degree is 1.5×10−2 or less,
wherein the warping degree is determined by calculating a least square value through a least squares method using at least three points in the plate face of the metal support, calculating a first difference between the least square value and a positive-side maximum displacement value on a positive side with respect to the least square value and a second difference between the least square value and a negative-side maximum displacement value on a negative side that is opposite to the positive side with respect to the least square value, and dividing Da that is a sum of the first difference and the second difference by a maximum length Lmax of the plate face of the metal support that passes through a center of gravity to determine Da/Lmax, which is used as the warping degree.