| 摘要 |
A battery module is provided to reduce contact resistance by improving a structure of a nut installed in an electrode terminal and to prevent the nut from coming loose by external vibration. A battery module(100) includes: many unit cells(10) comprising outwardly-protruded electrode terminals(21,22); a connection member(30) which electrically connects the electrode terminals on the neighboring unit cells with each other; and nuts(25,26) which are fastened to the electrode terminal to support the connection member and have protrusions(27), wherein the protrusions are formed on the surface of the nut in contact with the connection member and come into contact with the connection member. |
