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Lithium secondary cell and assembly thereof

  • US 20010049054A1
  • Filed: 05/22/2001
  • Published: 12/06/2001
  • Est. Priority Date: 05/24/2000
  • Status: Active Grant
First Claim
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1. A lithium secondary cell, comprising:

  • an internal electrode body including a hollow cylindrical winding core, a positive electrode plate and a negative electrode plate wound around an external periphery wall of the hollow cylindrical winding core with a separator disposed therebetween, a nonaqueous electrolyte solution impregnating inside the internal electrode body;

    a cylindrical cell case being opened at both ends for housing the internal electrode body; and

    two electrode caps sealing the above described internal electrode body at both ends of the cell case, wherein two electrode caps seal the above described internal electrode body at both open ends of the cell case;

    wherein each of the electrode caps is provided with a plate member sealing said internal electrode body and disposed so as to seal both open ends of the cell case, an terminal member protruding onto the surface of the above described electrode caps to lead out currents to outside, and an internal terminal member brought into connection with the internal electrode body and taking out currents from the internal electrode body; and

    wherein at least two members selected from the group consisting of the plate members, the external terminal members and the internal terminal members are joined together for construction.

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