Secondary battery

Secondary battery

  • CN 104,576,977 B
  • Filed: 03/18/2014
  • Issued: 06/02/2020
  • Est. Priority Date: 10/16/2013
  • Status: Active Grant
First Claim
Patent Images

1. A secondary battery, comprising:

  • a housing having an opening and defining an interior space;

    an electrode assembly located in the inner space of the case;

    a cap assembly coupled to the opening of the case and sealing the case; and

    a tie tape on an outer surface of the electrode assembly between the case and the electrode assembly,wherein the tying band includes a bottom tape including the first substrate and the second substrate, the bottom tape completely covering the bottom of the electrode assembly to prevent the bottom of the electrode assembly from being in direct contact with the case,wherein a height of the bottom tape is one third or less of a height of the electrode assembly, and the first substrate has a thickness ranging from 5 micrometers to 7 micrometers.

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