Rechargeable battery having alternately stacked electrodes

• US 9,899,699 B2
• Filed: 10/22/2014
• Issued: 02/20/2018
• Est. Priority Date: 11/03/2009
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Lee, Hyoung-No
• Primary Examiner(s): Cullen, Sean P
• Application Number:
  US14/521,027
• Publication Number:
  US 20150044555A1
• Time in Patent Office: 1,217 Days
• Field of Search: 429211, 429246
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/045 Cells or batteries with folded plate-like electrodes
• CPC Class Codes: H01M 10/125 Cells or batteries with wound or folded electrodes
• CPC Class Codes: H01M 16/006 of fuel cells with rechargeable batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49108 Electric battery cell making
• CPC Class Codes: Y10T 29/49112 including laminating of indefinite length material
• CPC Class Codes: Y10T 29/49114 including adhesively bonding

Abstract

A method of manufacturing a rechargeable battery includes continuously supplying a first electrode plate, the first electrode plate including a plurality of first active material portions with gaps therebetween on a first current collector, continuously supplying a first separator and a second separator to respective surfaces of the first electrode plate, bending the first electrode plate with the first and second separators to form a zigzag structure with bent portions, supplying a second electrode plate to an inside of each bent portion of the zigzag structure, the second electrode plate including a second active material portion on a second current collector, aligning and stacking the first electrode plate, the first separator, the second separator, and the second electrode plate, and taping the aligned and stacked first electrode plate, first separator, second separator, and second electrode plate at an outermost side thereof.

Claims

1. A rechargeable battery, comprising:

a first electrode plate having a first current collector and a plurality of first active material portions, the plurality of first active material portions including first group material portions arranged on a first surface of the first current collector with a first gap therebetween and second group material portions arranged on a second surface of the first current collector with a second gap therebetween, the first and second surfaces of the first current collector being opposite to each other;

a first separator and a second separator on respective surfaces of the first electrode plate; and

a second electrode plate including a second current collector and a second active material portion on the second current collector, the second electrode plate being separated from the first electrode plate by at least one of the first separator and the second separator,

wherein the first electrode plate, the first separator, and the second separator are bent in a zigzag structure with bent portions, the second electrode plate being arranged in an inside of each bent portion of the zigzag structure to from at least one double cell having the first electrode plate at both sides of the second electrode plate, wherein

each of the first electrode plate, the first separator, and the second separator is integrally connected in the double cell, and wherein

the first gap between the first group material portions and the second between the second group material portions are spaced apart from each other in a length direction of the first current collector.

2. The rechargeable battery as claimed in claim 1, wherein the first current collector and the second current collector are connected via a tab, the tab including at least one penetration hole.

3. The rechargeable battery as claimed in claim 1, wherein the first electrode plate is a negative electrode, and the second electrode plate is a positive electrode.

4. The rechargeable battery as claimed in claim 1, wherein:

the first group material portions of the first active material portions are on a first outer surface of the bent portions of the zigzag structure, and

the second group material portions of the first active material portions are on a second outer surface of the bent portions of the zigzag structure.

5. The rechargeable battery as claimed in claim 4, wherein

the first group material portions and the second group material portions of the first active material portions are not provided on an inner surface of the bent portions.

6. The rechargeable battery as claimed in claim 4, wherein the first electrode plate has penetration holes in the bent portions.

7. The rechargeable battery as claimed in claim 6, wherein the penetration holes are in the first group material portions provided in the first outer surface of the bent portions and in the second group material portions provided in the second outer surface of the bent portions.