CYLINDRICAL SECONDARY BATTERY
The present disclosure relates to a cylindrical secondary battery (100) allowing the loss of space inside a case to be reduced. As an example, the present disclosure provides a cylindrical secondary battery (100) including an electrode assembly (120) which includes a first electrode plate (121), a s...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The present disclosure relates to a cylindrical secondary battery (100) allowing the loss of space inside a case to be reduced. As an example, the present disclosure provides a cylindrical secondary battery (100) including an electrode assembly (120) which includes a first electrode plate (121), a separator (123), and a second electrode plate (122), a case (110) which has a cylindrical shape, in which the electrode assembly (120) is accommodated, and of which a lower portion is open, a terminal (150) which passes through an upper surface portion (111) of the case (110) and is coupled to the case through a first gasket (116), a first current collector plate (130) which is interposed between an upper surface of the electrode assembly (120) and the case (110) and electrically connects the first electrode plate (121) and the terminal (150), and a cap plate (160) configured to seal the lower end portion of the case (110), wherein the case (110) includes the upper surface portion (111) having a flat plate shape, a central portion (113) which is positioned at a central portion of the upper surface portion (111), has a terminal hole (113b), and protrudes outward further than the upper surface portion (111), and a side surface portion (112) extending downward from an edge of the upper surface portion (111). |
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