| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection structure avoiding a generation of short-circuit by preventing a bus bar from exposure, prevented from erroneous connection of positive electrode and negative electrode. SOLUTION: The outer diameter D<SB>1</SB>of a positive electrode side end part 30 of a battery module 7 at one side is made larger than the outer diameter D<SB>2</SB>of a negative electrode end part 24 of an adjacent battery module 8 on the other side. An end plate 42 comprises a plurality of first holding holes 43 to which, the positive electrode side end part 30 is fitted, and a plurality of second holding holes 44 to which, the negative electrode side end part 24 is fitted. A bus bar plate 45 comprises a plurality of bus bars 19 having a positive electrode side connection part 46 contacting with a positive electrode 18 and a negative electrode side connection part 47 contacting with a negative electrode 17, and a plurality of operation holes 48, 49 fronting the positive electrode side connection part 46 and the negative electrode side connection part 47 respectively. A connection means C, connecting the positive electrode 18 to the positive electrode side connection part 46 through the operation hole 48, and connecting the negative electrode 17 to the negative electrode side connection part 47 through the operation hole 49, are formed. COPYRIGHT: (C)2003,JPO |
