Title:
An obturation object for encapsulated type batteries, an encapsulated type battery, and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP5968072
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sealing body for a sealed battery incorporating a PTC element in which the internal pressure of a battery can be released immediately upon rising.SOLUTION: In a lithium ion primary battery 10, a sealing body 15 is attached by laser welding so as to seal the opening 13 of a positive electrode can 11. The sealing body 15 includes a sealing plate 31, a resin packing 32, a negative electrode terminal 33, a PTC element 34, and a cap member 35 and an insulation ring 36, which are formed integrally by resin insert molding. The negative electrode terminal 33 has a columnar terminal body 30 made of a metal, and a flange 42 projecting from the outer end of a can in the terminal body 30. The terminal body 30 has a hollow bottomed shape, and incorporates a gas discharge valve 52 for releasing the internal pressure made of resin.
Inventors:
Ken Sunada
Masao Kondo
Keizo Murakami
Masao Kondo
Keizo Murakami
Application Number:
JP2012113879A
Publication Date:
August 10, 2016
Filing Date:
May 17, 2012
Export Citation:
Assignee:
fdk Tottori Co., Ltd.
International Classes:
H01M2/04; H01M2/12; H01M2/30; H01M2/34
Domestic Patent References:
| JP2010055992A | ||||
| JP2013149476A | ||||
| JP2013101794A | ||||
| JP2001160382A | ||||
| JP10188947A | ||||
| JP2004146362A | ||||
| JP2003282046A | ||||
| JP5081940U |
Attorney, Agent or Firm:
Hisahiko Atsumi
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