US 10,950,916 B2Granted

Battery and battery manufacturing method

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsTomotaka Hagino, Yuta Nemoto, Tomohiro Ono, Yoichi Naruse

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Abstract

A battery manufacturing method includes assembling an internal terminal, a gasket, a battery case component, an insulator, and an external terminal into a state where a cylindrical part of the gasket is fitted in a mounting hole of the battery case component, a projecting part of the internal terminal is fitted in the cylindrical part of the gasket, the insulator is disposed on an outer surface of the battery case component with the projecting part fitted in a through-hole, and the external terminal is disposed on top of the insulator so as to lie on the projecting part. The external terminal is pressed against the projecting part of the internal terminal, and the external terminal or the internal terminal is vibrated to thereby weld together the projecting part and the external terminal in a solid state.

Claims9

Dependent claims

A battery comprising:

a battery case component having a mounting hole;
an internal terminal;
an external terminal;
and
an insulation member interposed between the internal terminal and the battery case component and interposed between the external terminal and the battery case component, wherein:
the internal terminal includes a base part that is laid on an inner side of the battery case component with the insulation member interposed between the base part and the battery case component, and a projecting part that protrudes from the base part and is fitted on the battery case component by being inserted through the mounting hole with the insulation member interposed between the projecting part and an inner periphery of the battery case component defining the mounting hole;
and
the external terminal is laid on the projecting part inserted through the mounting hole and includes a weld, which is located at a portion of the external terminal that faces toward the battery case component, at which the external terminal is welded to the projecting part of the internal terminal.

5 more elements

A battery manufacturing method comprising:

preparing a battery case component in which a mounting hole is formed;
preparing a gasket having a cylindrical part that is fittable into the mounting hole;
preparing an internal terminal having a projecting part that is fittable into the cylindrical part;
preparing an insulator having a through-hole into which the projecting part is fitted;
preparing an external terminal that is disposed on top of the insulator so as to lie on the projecting part;
assembling the internal terminal, the gasket, the battery case component, the insulator, and the external terminal into a state where the cylindrical part of the gasket is fitted in the mounting hole of the battery case component, the projecting part of the internal terminal is fitted in the cylindrical part of the gasket, the insulator is disposed on an outer surface of the battery case component with the projecting part fitted in the through-hole, and the external terminal is disposed on top of the insulator so as to lie on the projecting part;
and
welding together the external terminal and the projecting part of the internal terminal in a solid state by pressing the external terminal against the projecting part and vibrating the external terminal or the internal terminal.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/148,355Filed 1 Oct 2018
Priority: JP JP2017-1964266 Oct 2017
Published: US 2019/0109315 A111 Apr 2019
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H01M 10/058
Accumulators with non-aqueous electrolyte: construction or manufacture
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 50/119
Inorganic material: metals
H01M 50/176
Adapted for the shape of the cells: for prismatic or rectangular cells