发明名称 |
LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF |
摘要 |
A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case. The starting-end-side negative electrode remainder portion is positioned in a region where the surplus nonaqueous electrolyte exists, when the lithium-ion secondary battery is disposed in a predetermined posture. |
申请公布号 |
EP3075019(A1) |
申请公布日期 |
2016.10.05 |
申请号 |
EP20140815880 |
申请日期 |
2014.11.27 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
UENO, YUKIYOSHI;MIZUNO, TOMOYUKI;YAMAMOTO, KUNIMITSU;OHIRA, JUNKO;INOUE, KAORU;FUJITA, HIDEAKI;SANO, HIDEKI |
分类号 |
H01M2/34;H01M10/0525;H01M10/0567;H01M10/0587;H01M10/42 |
主分类号 |
H01M2/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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