円筒形電池

JP7891983B2Active Publication Date: 2026-07-17PANASONIC ENERGY CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
PANASONIC ENERGY CO LTD
Filing Date
2022-06-09
Publication Date
2026-07-17

AI Technical Summary

Benefits of technology

【0006】 本開示に係る円筒形電池によれば、電池の内部抵抗を低減することができる。

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Abstract

A cylindrical battery (10) comprises an electrode body (14) in which a long positive electrode (11) having a plurality of positive electrode lead portions (20) and a long negative electrode (12) are wound with a separator (13) therebetween, a bottomed cylindrical external can (16) that accommodates the electrode body (14), and a sealing body (17) which is crimp fixed to an opening of the external can (16). The sealing body (17) has a sealing plate (27) and a current collector plate (40) having a through-hole, and the plurality of positive electrode lead portions (20) pass through the through-hole in the current collector plate (40) and are bent and joined above the current collector plate (40).
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