To provide a battery in which the reduction of electric resistance at the joining part of a battery can and a current collector can be attained.
A wound electrode 4 being a power generating element is housed in the battery can 1 provided with a tubular can body 11 having a peripheral wall 16 and a bottom wall 17, and electric power generated by the wound electrode body 4 can be extracted outside from a pair of positive and negative electrode terminals 10, 20. The negative electrode terminal 10 is constructed of the bottom wall 17, and a current collector 5 of the negative electrode side covering an electrode edge 48b is installed at the electrode edge 48 of the negative electrode side of the wound electrode body 4 connected to the negative electrode terminal 10. The current collector 5 on the negative electrode side is constructed of a flat body 51 and a cylindrical skirt 55 protruding toward the current collector 3 on the positive electrode side surrounding the outer circumference of the flat body 51, and a projection 13 formed at the peripheral wall 16 is projection-welded to the skirt 55.
SATO KOICHI
IKEMACHI TAKAAKI
NOMA TOSHIYUKI
| JP2002075435A | 2002-03-15 | |||
| JP2002100342A | 2002-04-05 | |||
| JP2001345086A | 2001-12-14 | |||
| JPS63133064U | 1988-08-31 | |||
| JP2004055371A | 2004-02-19 |
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