Electrode plate, electrode assembly and manufacturing method of electrode plate

摘要

An electrode plate, an electrode assembly and a manufacturing method of the electrode plate to prevent an internal electrical short occurring between electrode plates by forming a ceramic layer wrapping a current collector plate and an active material layer. The electrode plate includes a current collector plate having a first face and a second face opposite to the first face, an active material layer formed on at least one of the first face and the second face of the current collector plate, and a ceramic layer wrapping the current collector plate and the active material layer.

主权项

1. An electrode assembly comprising:
a first electrode plate and a second electrode plate, the first electrode plate comprising:
a current collector plate having a first face and a second face facing away from the first face;an electrode tab fixed onto the first face of the current collector plate and elongated in a first direction extending in a first plane generally parallel to the first face of the current collector plate such that the electrode tab comprises a first portion overlapping with the current collector plate when viewed in a second direction perpendicular to the first plane and further that the electrode tab comprises a second portion that does not overlap with the current collector plate when viewed in the second direction;an active material layer formed on at least one of the first face and the second face of the current collector plate, wherein the current collector plate, the electrode tab and the active material layer form an integrated body, wherein the electrode tab extends in the first direction to partially cover the first face of the current collector plate and the active material layer covers a remaining portion of the first face of the current collector plate not covered by the electrode tab when viewed in a cross section taken in a second plane perpendicular to the first plane and parallel to the first direction; anda coating layer comprising a ceramic material coated over the integrated body such that the current collector plate is not exposed while the second portion of the electrode tab is exposed, wherein the second face of the current collector plate comprises a portion that overlaps the first portion of the electrode tab when viewed in the second direction, wherein the coating layer directly contacts the portion of the second face overlapping the first portion of the electrode tab.