END COVER ASSEMBLY, ENERGY STORAGE APPARATUS, AND METHOD FOR MOUNTING AND POSITIONING END COVER ASSEMBLY

原文（中文）

An end cover assembly, an energy storage apparatus, and method for mounting and positioning an end cover assembly are provided. The end cover assembly includes an end cover and a current-collector disk. The end cover is provided with an explosion-proof valve and defines a liquid-injection hole. A main body portion of the current-collector disk defines a groove on a surface of the main body portion facing towards the end cover. The groove extends from a center of the main body portion to an edge of the main body portion in a radial direction of the main body portion. A visual identification portion on the main body portion has a visual identification characteristic different from a region of the main body portion other than the visual identification portion. The liquid-injection hole and the visual identification portion are configured for alignment of the end cover and the current-collector disk.