Battery cell and battery module using the same

摘要

A battery cell and a battery module using the same that allow the battery cell to be extended without a limit in the number of battery cells is provided. The battery cell includes a body, at least one rail installed in the body, and at least one rail groove formed on the other surface of the body where the rail is not installed.

主权项

1. A battery cell, comprising:
a body; at least one rail installed on the body; at least one rail groove formed on a surface of the body on which the rail is not installed; and at least one cooling hole in the rail, wherein the cooling hole is opened to outside at the end of the rail and forms a path of a fluid, wherein the rail has a cross section that is gradually extended toward an outside direction of the body, wherein the cooling hole has a cross section that is gradually extended toward an outside direction of the body, and wherein the rail groove has a cross section that is gradually extended toward an inside direction of the body.