Flat-shaped battery

Flat-shaped battery

  • CN 102,792,482 B
  • Filed: 09/13/2010
  • Issued: 06/29/2016
  • Est. Priority Date: 03/09/2010
  • Status: Active Grant
First Claim
Patent Images

1. a flat-shaped battery (1), it possesses:

  • There is the outer tinning (10) of bottom tube-like, Sealing tank (20), it has profile is little compared with the sidewall of described outer tinning (10) cylinder portion and by planar portions (21) inaccessible for the opening of a side in this portion, and in the way of forming space between described sealing tank (20) and described outer tinning (10), it is configured to be inverted plate-like relative to this outer tinning (10), and Liner (30), it is at least molded in the inner side and outer side of described sealing tank (20);

    In the space formed between described outer tinning (10) and described sealing tank (20), it is configured with the electrode body (40) by the positive pole (41) being respectively formed as tabular and negative pole (46) alternative stacked in a thickness direction;

    In the cylinder portion of described sealing tank (20), it is provided with and the open end side in this portion is expanded into stair-stepping end difference (22c), The open end of the sidewall of described outer tinning (10) is chimeric with the end difference (22c) of described sealing tank (20);

    Described liner (30) has open end in the inner side of described sealing tank (20), cartridge from this sealing tank (20) to the molded liner medial part (31) of described planar portions (21), and in the outside of described sealing tank (20), the open end of cartridge from this sealing tank (20) is to the molded liner lateral part (32) of described end difference (22c);

    In described liner medial part (31), less than the thickness of the liner medial part (31) of the end difference (22c) at this sealing tank (20) at the thickness of the liner medial part (31) of the open end side in the cylinder portion of described sealing tank (20);

    Described liner medial part (31) has the liner top (31a) of the sealing tank side of the base end part of the surrounding wall portion being positioned at described sealing tank (20) and is positioned at the end difference (22c) of this surrounding wall portion and the liner lower (31b) of the sealing tank side of wide diameter portion (22b);

    Stage portion (31c) is formed in described liner top (31a) side of described liner lower (31b), described stage portion (31c) is formed as the taper being gradually increased from liner top (31a) towards liner lower (31b) internal diameter And described stage portion (31c) is formed as;

    the thickness of the liner medial part (31) of the open end side of the cartridge of described sealing tank (20) is less than the thickness of the liner medial part (31) of the described end difference (22c) of this sealing tank (20);

    When being combined with described outer tinning (10) and described sealing tank (20), described liner lateral part (32) is in the way of sandwiching between the sidewall of this outer tinning (10) and the cylinder portion of sealing tank (20), take shape in the outside in the cylinder portion of this sealing tank (20) Described liner lateral part (32) is formed as taper, making when outer tinning (10) being embedded in before described sealing tank (20), the thickness (X) being positioned at the foreign side of cartridge and the part of open end side is less than the thickness (Y) of the part of the foreign side and described end difference (22c) side that are positioned at this portion.

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