US 12,237,461 B2
Packaging material for battery
Atsuko Takahagi, Tokyo (JP); Rikiya Yamashita, Tokyo (JP); and Daisuke Yasuda, Tokyo (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Filed on Jan. 24, 2024, as Appl. No. 18/421,027.
Application 18/144,434 is a division of application No. 17/562,710, filed on Dec. 27, 2021, granted, now 11,688,878, issued on Jun. 27, 2023.
Application 17/562,710 is a division of application No. 17/077,715, filed on Oct. 22, 2020, granted, now 11,251,481, issued on Feb. 15, 2022.
Application 17/077,715 is a division of application No. 15/505,639, granted, now 10,854,855, issued on Dec. 1, 2020, previously published as PCT/JP2015/073690, filed on Aug. 24, 2015.
Application 18/421,027 is a continuation of application No. 18/144,434, filed on May 8, 2023, granted, now 11,923,500.
Claims priority of application No. 2014-173870 (JP), filed on Aug. 28, 2014; and application No. 2014-197013 (JP), filed on Sep. 26, 2014.
Prior Publication US 2024/0170716 A1, May 23, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0525 (2010.01); H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/124 (2021.01); H01M 50/133 (2021.01)
CPC H01M 10/0525 (2013.01) [H01M 50/119 (2021.01); H01M 50/121 (2021.01); H01M 50/124 (2021.01); H01M 50/133 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A battery packaging material comprising a laminate in which at least a base material layer, a metal layer and a sealant layer are laminated in this order,
the base material layer comprises polyethylene terephthalate and nylon,
a thickness of the metal layer is more than 50 μm,
the laminate satisfying the relationship of A+B≥2.50, where A+B is a sum of a value A of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the MD direction and a value B of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the TD direction.
 
7. A battery packaging material comprising a laminate in which at least a base material layer, a metal layer and a sealant layer are laminated in this order, wherein
when A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and
A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer,
the battery packaging material satisfies the relationships of:
(A1−A2)≥60 N/15 mm; and
(B1−B2)≥50 N/15 mm
 
15. A battery packaging material comprising a laminate in which at least a base material layer, a metal layer and a sealant layer are laminated in this order,
a layer formed of a polyolefin-based two-liquid curable adhesive is laminated between the metal layer and the sealant layer,
the laminate satisfying the relationship of A+B≥2.50, where A+B is a sum of a value A of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the MD direction and a value B of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the TD direction.
 
16. A battery packaging material comprising a laminate in which at least a coating layer, a base material layer, a metal layer and a sealant layer are laminated in this order,
the laminate satisfying the relationship of A+B≥2.50, where A+B is a sum of a value A of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the MD direction and a value B of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the TD direction.