US 10,483,504 B2Granted

Sealed battery

AssigneeToyota Jidosha Kabushiki Kaisha

InventorKoshiro Yoneda

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Abstract

Provided is a sealed battery, which includes an insulating member arranged between a lid member and a collector terminal member. The insulating member includes a cylindrical portion that is positioned between a through hole and a connecting portion and surrounds the connecting portion, and a flat plate portion positioned between the lid member and the flange portion, and the flat plate portion has a first projecting portion projecting towards the lid member side, and a second projecting portion projecting towards the flange portion side. In a sectional view taken along a virtual plane including a central axis of the connecting portion, a peak of the first projecting portion is provided at a position closer to the central axis than a peak position of the second projecting portion.

Claims11

Dependent claims

A sealed battery comprising:

a power generation element;
a case member having a bottomed cylindrical shape, in which the power generation element is housed;
a lid member that closes an opening of the case member and is provided with a through hole;
a collector terminal member having one end connected with the power generation element inside the case member, and the other end that is arranged in the through hole and extended outside the lid member;
and
an insulating member arranged between the lid member and the collector terminal member, wherein
the other end of the collector terminal member includes a connecting portion having a columnar shape, that goes through the through hole, and a flange portion that is arranged so as to be approximately parallel with the lid member,
the insulating member includes a cylindrical portion that is positioned between the through hole and the connecting portion and surrounds the connecting portion, and a flat plate portion that is positioned between the lid member and the flange portion, the cylindrical portion and the flat plate portion being integral with the insulating member,
the flat plate portion has a first projecting portion projecting towards the lid member, and a second projecting portion projecting towards the flange portion, the first projecting portion and the second projecting portion being integral with the insulating member,
in a sectional view taken along a virtual plane including a central axis of the connecting portion,
the first projecting portion is provided at a position where a first side of the first projecting portion is linearly symmetrical with a second side of the first projecting portion, opposite from the first side, with respect to the central axis,
the second projecting portion is provided at a position where a first side of the second projecting portion is linearly symmetrical with a second side of the second projecting portion, opposite from the first side, with respect to the central axis,
a peak of the first projecting portion is provided at a position closer to the central axis than a peak position of the second projecting portion
the first projecting portion is provided into a ring shape centering about the central axis,
the second projecting portion is provided into a ring shape centering about the central axis, and
the first projecting portion is in contact with a surface of the lid member and the second projecting portion is in contact with a surface of the collector terminal.

13 more elements

A sealed battery comprising:

a power generation element;
a case member having a bottomed cylindrical shape, in which the power generation element is housed;
a lid member that closes an opening of the case member and is provided with a through hole;
a collector terminal member having one end connected with the power generation element inside the case member, and the other end that is arranged in the through hole and extended outside the lid member;
and
an insulating member arranged between the lid member and the collector terminal member, wherein
the other end of the collector terminal member includes a connecting portion having a columnar shape, that goes through the through hole, and a flange portion that is arranged so as to be approximately parallel with the lid member,
the insulating member includes a cylindrical portion that is positioned between the through hole and the connecting portion and surrounds the connecting portion, and a flat plate portion that is positioned between the lid member and the flange portion, the cylindrical portion and the flat plate portion being integral with the insulating member,
the lid member includes a first projecting portion projecting towards the insulating member,
the flat plate portion includes a second projecting portion projecting towards the flange portion,
the first projecting portion being integral with the lid member and the second projecting portion being integral with the insulating member,
the first projecting portion is in contact with a surface of the insulating member and the second projecting portion is in contact with a surface of the collector terminal,
in a sectional view taken along a virtual plane including a central axis of the connecting portion,
the first projecting portion is provided at a position where a first side of the first projecting portion is linearly symmetrical with a second side of the second projecting portion, opposite from the first side, with respect to the central axis,
the second projecting portion is provided at a position where a first side of the second projecting portion is linearly symmetrical with a second side of the second projecting portion, opposite from the first side, with respect to the central axis,
a peak of the first projecting portion is provided at a position closer to the central axis than a peak position of the second projecting portion,
the first projecting portion is provided into a ring shape centering about the central axis, and
the second projecting portion is provided into a ring shape centering about the central axis.

15 more elements

A sealed battery comprising:

a power generation element;
a case member having a bottomed cylindrical shape, in which the power generation element is housed;
a lid member that closes an opening of the case member and is provided with a through hole;
a collector terminal member having an one end connected with the power generation element inside the case member, and the other end that is arranged in the through hole and extended outside the lid member;
and
an insulating member arranged between the lid member and the collector terminal member, wherein
the other end of the collector terminal member includes a connecting portion having a columnar shape, that goes through the through hole, and a flange portion that is arranged so as to be approximately parallel with the lid member,
the insulating member includes a cylindrical portion that is positioned between the through hole and the connecting portion and surrounds the connecting portion, and a flat plate portion that is positioned between the lid member and the flange portion, the cylindrical portion and the flat plate portion being integral with the insulating member,
the flat plate portion includes a first projecting portion projecting towards the lid member,
the flange portion includes a second projecting portion projecting towards the insulating member,
the first projecting portion being integral with the insulating member and the second projecting portion being integral with the collector terminal,
the first projecting portion is in contact with a surface of the lid member and the second projecting portion is in contact with a surface of the insulating member,
in a sectional view taken along a virtual plane including a central axis of the connecting portion,
the first projecting portion is provided at a position where a first side of the first projecting portion is linearly symmetrical with a second side of the second projecting portion, opposite from the first side, with respect to the central axis,
the second projecting portion is provided at a position where a first side of the second projecting portion is linearly symmetrical with a second side of the second projecting portion, opposite from the first side, with respect to the central axis,
a peak of the first projecting portion is provided at a position closer to the central axis than a peak position of the second projecting portion,
the first projecting portion is provided into a ring shape centering about the central axis, and
the second projecting portion is provided into a ring shape centering about the central axis.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/432,040Filed 14 Feb 2017
Priority: JP 2016-02709816 Feb 2016
Published: US 2017/0237049 A117 Aug 2017
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 50/152
Characterised by their shape: for cells having curved cross-section, e.g. round or elliptic
H01M 50/179
Adapted for the shape of the cells: for cells having curved cross-section, e.g. round or elliptic
H01M 50/213
Characterised by their shape: adapted for cells having curved cross-section, e.g. round or elliptic

Family

US 2017/0237049 A1Pre-grant publication · published 17 Aug 2017
US 10,483,504 B2This patent

From the US filing history. Foreign family members aren’t listed.

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