SECONDARY BATTERY AND MANUFACTURING METHOD OF SECONDARY BATTERY

To provide a secondary battery capable of reducing a load on a connection point between a current collector terminal and an electrode body, and also capable of suppressing the occurrence of problems caused by vibration input.SOLUTION: A positive electrode current collector terminal 30 and a negative electrode current collector terminal 40 have a positive electrode connection part 33 and a negative electrode connection part 43, which are composed of a long member and provided along a longitudinal direction, respectively. An electrode body 50 includes a positive electrode material 51 and a negative electrode material 52 which are strip-shaped and laminated with a separator 53 interposed therebetween. The electrode body has a positive electrode side end portion 60 composed of the positive electrode material 51 on one end side in a first direction orthogonal to a lamination direction, and a negative electrode side end portion composed of the negative electrode material 52 on the other end side. The electrode body is wound around peripheral surfaces 31a, 41a of the respective current collector terminals 30, 40 while the positive electrode side end portion 60 is connected to the positive electrode connection part 33 of the positive electrode current collector terminal 30 and the negative electrode side end portion is connected to the negative electrode connection part 43 of the negative electrode current collector terminal 40.SELECTED DRAWING: Figure 4 【課題】集電端子と電極体との接続箇所への負荷を軽減することができ、振動入力に起因する問題の発生を抑制できる二次電池を提供する。【解決手段】正極集電端子３０及び負極集電端子４０は、長尺の部材からなり、長手方向に沿って設けられた正極接続部３３及び負極接続部４３をそれぞれ有し、電極体５０は、帯状の正極材５１及び負極材５２がセパレータ５３を介して積層されてなり、積層方向と直交する第１方向の一端側に正極材５１からなる正極側端部６０を有し、他端側に負極材５２からなる負極側端部を有しており、正極側端部６０が正極集電端子３０の正極接続部３３に接続され、負極側端部が負極集電端子４０の負極接続部４３に接続された状態で、各集電端子３０，４０の周面３１ａ，４１ａに巻き取られた状態である。【選択図】図４