| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery having reduced failures in ultrasonic joining, and high energy density. SOLUTION: The nonaqueous electrolyte battery includes a container 1, an electrode group 2 stored in the container, and including a positive electrode and a negative electrode, a plurality of positive electrode current collecting tabs 3 and a plurality of negative electrode current collecting tabs 4 extending from the positive electrode and the negative electrode of the electrode group, respectively, a positive electrode lead 7 and a negative electrode lead 8 electrically connected to the plurality of positive electrode current collecting tabs and the plurality of negative electrode current collecting tabs, respectively, a cover 9 covering an opening portion of the container, and output terminals 12, 13 provided on the cover and electrically connected to the positive electrode lead and the negative electrode lead, respectively. At least one current collecting tabs out of the plurality of positive electrode current collecting tabs and the plurality of negative electrode current collecting tabs are held between holding plates 5, 6. The holding plates are caulked and fixed to each other at one or more places across at least one current collecting tabs. The leads, the holding plates and at least one current collecting tabs are ultrasonic-joined to one another at one or more places. COPYRIGHT: (C)2011,JPO&INPIT |
