Sealing member of tube-shaped battery and tube-shaped battery

Patent metadata

Field	Value
Publication number	US-9923178-B2
Application number	US-201615079511-A
Country	US
Kind code	B2
Filing date	Mar 24, 2016
Priority date	Mar 25, 2015
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A sealing member 40 to seal an opening of a battery can, the sealing member being used to configure a tube-shaped battery provided with a bottomed tube-shaped battery can and a power generating element that has been arranged inside the battery can, the sealing member 40 includes an electrode terminal that is to be electrically connected to the power generating element, a sealing plate 41 , insulating gaskets 42 a, 42 b , and a washer 44 . An inserting part 43 b extending from the electrode terminal 43 is inserted through these elements so that the elements are integrally tightened. The insulating gasket 42 a is provided with a protruding part 42 a 1 having an appropriate horizontal section shape, and the sealing plate 41 adjacent to the insulating gasket is provided with a recess part 41 a that has been formed in a shape corresponding to the protruding part 42 a 1.

First claim

What is claimed is:

1. A sealing member of a tube-shaped battery to seal an opening of a battery can, the sealing member being used to configure a tube-shaped battery provided with the bottomed tube-shaped battery can and a power generating element that has been arranged inside the battery can, the sealing member comprising:
an electrode terminal that is to be electrically connected to a power generating element;
a tabular sealing plate having a flat shape that comes in close contact with an inner peripheral surface of an opening of a battery can; and
an insulating gasket that comes in close contact with the sealing plate and the electrode terminal in order to electrically insulate between the sealing plate and the electrode terminal,
wherein a side of the insulating gasket adjacent to the sealing plate is provided with a protruding part having a predetermined horizontal section shape around an opening of the insulating gasket,
a side of the sealing plate adjacent to the insulating gasket is provided with a recess part that has been formed in a shape corresponding to the protruding part around an opening of the sealing plate, and
an inserting part that is a columnar member extending from the electrode terminal is inserted into the sealing plate and the insulating gasket and at least the sealing plate and the insulating gasket are pressed to each other, and the protruding part of the insulating gasket is held in a compressed state in the recess part of the sealing plate and the protruding part is pressed to an inner surface of the recess part and to an outer peripheral surface of the electrode terminal.

2. The sealing member of a tube-shaped battery according to claim 1 , wherein
the insulating gasket includes a first member having the protruding part and a second member arranged in an opposite side to the first member so that the sealing plate is disposed between the first member and the second member, and a side of the second member adjacent to the sealing plate is provided with a recess part that corresponds to a projecting part appearing as a back side of the recess part of the sealing plate.

3. A tube-shaped battery comprising:
a bottomed tube-shaped battery can;
a power generating element that has been arranged inside the battery can; and
a sealing member to seal an opening of the battery can, the sealing member including an electrode terminal that is to be electrically connected to the power generating element,
wherein the sealing member includes
a tabular sealing plate having a flat shape that comes in close contact with an inner peripheral surface of the opening of the battery can, and
an insulating gasket that comes in close contact with the sealing plate and the electrode terminal in order to electrically insulate between the sealing plate and the electrode terminal,
a side of the insulating gasket adjacent to the sealing plate is provided with a protruding part having a predetermined horizontal section shape around an opening of the insulating gasket,
a side of the sealing plate adjacent to the insulating gasket is provided with a recess part formed in a shape corresponding to the protruding part around an opening of the sealing plate,
an inserting part that is a columnar member extending from the electrode terminal is inserted into the sealing plate and the insulating gasket and at least the sealing plate and the insulating gasket are pressed to each other, and the protruding part of the insulating gasket is held in a compressed state in the recess part of the sealing plate and the protruding part is pressed to an inner surface of the recess part and to an outer peripheral surface of the electrode terminal.

Assignees

• Fdk Tottori Co Ltd
• Fdk Corp

Inventors

• Urushihara Kanji
• Itagaki Shohei

Classifications

• H01M6/16

  with organic electrolyte (H01M6/18 takes precedence) · CPC title

• H01M6/14

  Cells with non-aqueous electrolyte · CPC title

• H01M50/179

  for cells having curved cross-section, e.g. round or elliptic (H01M50/176, H01M50/181 take precedence) · CPC title

• H01M50/184

  characterised by their shape or structure · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title