The invention discloses a battery connection structure employing a battery connection sheet with fins. The battery connection structure comprises a plurality of batteries (3) and the battery connection sheet, wherein the battery connection sheet is used for connecting the batteries (3) and comprises a first connection sheet (1) and a second connection sheet (2), the first connection sheet comprises a substrate (14), a plurality of fins (11) are connected to a long side of the substrate (14), positioning holes (12) are formed in the fins (11) and are correspondingly connected with pole post central holes in the batteries (3), and each fin (11) and the substrate (14) are in transition connection by a bent connection bridge 913). With the adoption of the connection sheet, the welding between battery pole posts and the connection sheet is facilitated, the production efficiency is improved, the production cost is reduced, and meanwhile, the problem of non-uniform current and temperature distribution on the connection is also solved.