SQUARE SECONDARY BATTERY, BATTERY PACK USING THE SAME, AND METHOD FOR MANUFACTURING SQUARE SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a square secondary battery having a high volume energy density and excellent in reliability.SOLUTION: An electrode body including a positive electrode plate and a negative electrode plate comprises a positive electrode tab part 4c in an end part of a sealing plate 2...

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Bibliographic Details
Main Authors YAGI HIROMASA, WAKIMOTO RYOICHI, FUJIWARA ISAO, KITAOKA KAZUHIRO
Format Patent
LanguageEnglish
Japanese
Published 22.12.2016
Subjects
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Summary:PROBLEM TO BE SOLVED: To provide a square secondary battery having a high volume energy density and excellent in reliability.SOLUTION: An electrode body including a positive electrode plate and a negative electrode plate comprises a positive electrode tab part 4c in an end part of a sealing plate 2 side. A positive electrode collector 6 including a collector body part 6a and a collector connection part 6b1 is electrically connected to the positive electrode plate. A pressure-sensitive current interruption mechanism 40 includes a conductive member 41 having an opening on the electrode body side, a deformation plate 42 sealing the opening, and the collector body part 6a arranged on the electrode body side of the deformation plate 42 and connected to the deformation plate 42. The collector connection part 6b1 is arranged between the current interruption mechanism 40 and one large area sidewall 2b of a square outer package 2, and the positive electrode tab part 4c is connected to the collector connection part 6b1.SELECTED DRAWING: Figure 7 【課題】高い体積エネルギー密度を有し、信頼性に優れた角形二次電池を提供する。【解決手段】正極板及び負極板を含む電極体は封口板2側の端部に正極タブ部4cを有し、正極板には集電体本体部6a及び集電体接続部6b1を有する正極集電体6が電気的に接続されている。感圧式の電流遮断機構40は、電極体側に開口部を有する導電部材41と、この開口部を封止する変形板42と、変形板42の電極体側に配置され変形板42に接続された集電体本体部6aを含む。集電体接続部6b1は電流遮断機構40と角形外装体2の一方の大面積側壁2bの間に配置され、正極タブ部4cは集電体接続部6b1に接続される。【選択図】図7
Bibliography:Application Number: JP20150099582