| 摘要 |
The present invention relates to a battery module in which electrode terminals of battery cells are electrically connected by a connection member. The battery cells include a structure in which plate-shaped electrodes protrude in a state where an electrode assembly is provided in a battery case of a laminate sheet which includes a metal layer and a resin layer. The electrode terminals include a first electrode terminal and a second electrode terminal, which are formed by dissimilar metals. The connection member includes a body connection part including a metal of the first electrode terminal and to which the first electrode terminal is welded; and an embedded connection part including a metal of the second electrode terminal and to which the second electrode terminal is welded, wherein the embedded connection part is formed as an embedded structure to be exposed toward one surface of the body connection part such that the embedded connection part has the same height as the body connection part to form a flat surface, and the first electrode terminal and the second electrode terminal are welded to the body connection part and the embedded connection part, respectively, on the exposed surface of the embedded connection part. |
