電池

Abstract

To provide a battery capable of effectively reducing foreign objects mixed into an electrode body, without reducing the battery capacity.SOLUTION: A battery includes: an electrode body 3 obtained by stacking a positive electrode plate and a negative electrode plate with a separator interposed therebetween, the positive electrode plate including a first positive electrode tab group 40A; an exterior body having an opening and housing the electrode body 3; a sealing plate 2 sealing the opening; a positive electrode terminal 7 attached to the sealing plate 2; and a substantially plate-shaped positive electrode current collector 6 arranged substantially parallel to the sealing plate 2 between the electrode body 3 and the sealing plate 2 and electrically connected to the positive electrode terminal 7. A positive electrode tab group 40A of the electrode body 3 is welded to a surface of the positive electrode current collector 6 facing the electrode body 3, and a second tape 82 covers an area corresponding to the back of a welding area of the positive electrode tab group 40A on the surface of the positive electrode current collector 6 facing the sealing plate 2.SELECTED DRAWING: Figure 13

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