Title:
密閉型電池およびその製造方法と,それを搭載した車両,電池搭載機器
Document Type and Number:
Japanese Patent JP5045752
Kind Code:
B2
Abstract:
A sealed battery includes a battery case with a liquid inlet, a power generating element in the case, a lid member closing the liquid inlet and having a peripheral edge welded to the case over the entire circumference, a circular groove in the outer surface of the case and around the entire periphery of the liquid inlet, a peripheral portion provided over the entire periphery of a portion in the back surface of the lid member facing the liquid inlet, and a protrusion partially placed around the liquid inlet between the circular groove and the peripheral portion to form a clearance between the circular groove and the peripheral portion. The space facing the inner surface in a portion melted during welding between the peripheral edge and the case is continuous to the liquid inlet through a clearance formed by the protrusion between the circular groove and the peripheral portion.
Inventors:
Tetsu Suzuki
Yuya Kondo
Masato Komatsuki
Yoichi Naruse
Yuya Kondo
Masato Komatsuki
Yoichi Naruse
Application Number:
JP2009526824A
Publication Date:
October 10, 2012
Filing Date:
December 12, 2008
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M50/147; H01M50/209
Domestic Patent References:
| JP2008041548A | ||||
| JP2007018915A | ||||
| JP2005190776A | ||||
| JP2004119329A | ||||
| JP2000268811A |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office