Secondary battery

Patent metadata

Field	Value
Publication number	US-10177349-B2
Application number	US-201514632387-A
Country	US
Kind code	B2
Filing date	Feb 26, 2015
Priority date	Jun 10, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

Provided is a secondary battery, including a bare cell including a terrace-shaped part on a side thereof; an insulation film attached to the terrace-shaped part; and a thermal protection device on the insulation film. The thermal protection device includes a transfer part; and a first lead terminal and a second lead terminal on both sides of the transfer part. The insulation film includes an opening overlapping the transfer part. The transfer part directly contacts the terrace-shaped part through the opening.

First claim

What is claimed is:

1. A secondary battery, comprising:
a bare cell including a terrace-shaped part on a side thereof, the terrace-shaped part including a contact part;
an insulation film attached to the terrace-shaped part; and
a thermal protection device on the insulation film, the thermal protection device including:
a transfer part; and
a first lead terminal and a second lead terminal on both sides of the transfer part,

the insulation film including an opening overlapping the transfer part, wherein:
the contact part of the terrace-shaped part includes a recess to receive the transfer part, and
the transfer part contacts the contact part of the terrace-shaped part through the opening of the insulation film and the recess of the contact part of the terrace-shaped part, wherein
a thermally conductive layer is in the recess of the contact part of the terrace-shaped part, and contacts a lower surface of the transfer part.

2. The secondary battery as claimed in claim 1 , wherein:
an upper surface of the terrace-shaped part, except for the contact part, is in a same plane as a lower surface of the bare cell, and
an upper surface of the contact part is lower than the upper surface of the terrace-shaped part.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Park Wanwoo

Classifications

• H01M50/545 Primary

  formed by the casing of the cells (cup shaped terminals adapted for cells having curved cross-section H01M50/56) · CPC title

• H01M50/528

  Fixed electrical connections, i.e. not intended for disconnection · CPC title

• H01M50/55

  on the same side of the cell · CPC title

• H01M50/124

  having a layered structure · CPC title

• H01M50/178

  for pouch or flexible bag cells · CPC title