| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery with an internal terminal and an external terminal strongly bonded to each other. SOLUTION: The battery 100 comprises an electrode body 80 having a positive electrode and a negative electrode, and a case 40 storing electrolyte together with the electrode body 80. It has the internal terminal 12 connected to the electrode body 80 and having a protruded portion protruded to the outside of the case 40, and the external terminal 16 arranged outside the case 40 and connected to the protruded portion 14 of the internal terminal 12. The external terminal 16 has a through-hole 18 into which the protruded portion 14 of the internal terminal 12 can be inserted. The protruded portion 14 of the internal terminal 12 is caulked in the state that its front end is inserted into the through-hole 18. In at least one of an outer peripheral face 15 of the protruded portion 14 and an inner peripheral face 17 of the through-hole 18 which are pushed against each other by the caulking, a depression 30 is formed into which the other face pushed by the caulking can be bitten while being deformed. COPYRIGHT: (C)2009,JPO&INPIT |
