Patent ID: 11949088
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. An electrode treatment method, comprising:
a separation step of grinding with grinder means, an electrode in which an electrode composite is held on a current collector wherein the electrode composite is separated from the current collector by said grinding while the current collector is prevented from being crushed during said separation step,
wherein the grinder means include a grinder that includes a first member having a grinding surface and a second member having a grinding surface,
the first member and the second member are positioned so that the grinding surfaces of the first member and the second member are opposite each other in an alignment direction in which the first member and the second member are aligned, so as to define a space for grinding the electrode between the grinding surfaces,
at least one of the first member and the second member rotates about a rotation axis extending parallel to the alignment direction, and
the grinding surfaces of the first member and the second member have a trench extending outward from the center of each grinding surface, wherein the trench is arranged radially on the grinding surface, and has a constant depth and width throughout a radial shape thereof.