Patent ID: 9692032
Date: 2017-06-27
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A rechargeable battery comprising: an electrode group comprising a plurality of negative electrode collectors, each negative electrode collector having a negative active material layer formed on a surface, and a plurality of positive electrode collectors, each positive electrode collector having a positive active material layer formed on a surface, alternately disposed in a layered manner into a strip shape with a separator configured to retain an electrolyte interposed between adjacent negative and positive electrode collectors, a plurality of negative electrode plate tabs formed at ends of the plurality of negative electrode collectors, and a plurality of positive electrode plate tabs formed at ends of the plurality of positive electrode collectors; a plurality of negative collecting plates joined to the plurality of negative electrode plate tabs and plurality of positive collecting plates joined to the plurality of positive electrode plate tabs; and a negative terminal base portion having a through-hole for a bolt and a positive terminal base portion having a through-hole for a bolt; wherein a plurality of the negative collecting plates are joined together and to the negative terminal base portion with pressing plates by a bolt, the bolt having a bolt flange and a bolt shaft portion, a portion of the bolt shaft portion passing through the through-hole of the negative terminal base, and at least one nut, and wherein a plurality of the positive collecting plates are joined together and to the positive terminal base portion with pressing plates by a bolt, the bolt having a bolt flange and a bolt shaft portion, a portion of the bolt shaft portion passing through the through-hole of the positive terminal base, and at least one nut; wherein the negative and positive collecting plates comprise a metal, and wherein the pressing plates comprise a metal or a resin.