Lithium-ion rechargeable battery, and method for producing lithium-ion rechargeable battery

Patent metadata

Field	Value
Publication number	US-2019252717-A1
Application number	US-201716345338-A
Country	US
Kind code	A1
Filing date	Oct 11, 2017
Priority date	Nov 25, 2016
Publication date	Aug 15, 2019
Grant date	—

Abstract

A lithium-ion rechargeable battery ( 1 ) including: a battery unit ( 50 ) including a metal substrate ( 5 ) and a battery part ( 10 ) formed on a surface of the substrate ( 5 ); and a shell ( 30 ) for housing the battery part ( 10 ) in the interior thereof. The shell ( 30 ) includes a laminated film ( 31 ) that includes a metal layer ( 313 ) and a thermo-adhesive resin layer ( 315 ), the metal layer ( 313 ) is connected to a negative electrode collector layer ( 14 ) of the battery part ( 10 ), the substrate ( 5 ) functions as a positive external electrode of the battery part ( 10 ), and the metal layer ( 313 ) functions as a negative external electrode of the battery part ( 10 ).

First claim

1 - 6 . (canceled)

7 . A lithium-ion rechargeable battery comprising:
a substrate having conductivity; a battery part including a first polarity layer laminated on one surface of the substrate to occlude and release a lithium ion with a first polarity, a solid electrolyte layer laminated on the first polarity layer and including an inorganic solid electrolyte having lithium-ion conductivity, and a second polarity layer laminated on the solid electrolyte layer to occlude and release a lithium ion with a second polarity, which is opposite to the first polarity; and a laminated film including a metal layer and a resin layer laminated on the metal layer to form an exposed portion, where a part of the metal layer is exposed, on one surface of the metal layer, the metal layer being electrically connected to the second polarity layer at the exposed portion, the laminated film sealing the battery part in a state where the metal layer is electrically insulated from the substrate.

8 . The lithium-ion rechargeable battery according to claim 7 , wherein
the battery part further includes another first polarity layer laminated on the other surface of the substrate to occlude and release a lithium ion with the first polarity, another solid electrolyte layer laminated on the another first polarity layer and including an inorganic solid electrolyte having lithium-ion conductivity, and another second polarity layer laminated on the another solid electrolyte layer to occlude and release a lithium ion with the second polarity, and another exposed portion is further formed in the laminated film, and the metal layer is electrically connected to the another second polarity layer at the another exposed portion.

9 . The lithium-ion rechargeable battery according to claim 7 , wherein
the battery part is disposed at an interior of the laminated film folded to have the resin layer at the interior thereof, and the battery part is sealed by adhesion of the resin layer.

10 . The lithium-ion rechargeable battery according to claim 8 , wherein
the battery part is disposed at an interior of the laminated film folded to have the resin layer at the interior thereof, and the battery part is sealed by adhesion of the resin layer.

11 . The lithium-ion rechargeable battery according to claim 9 , wherein a part of the substrate is exposed without being covered with the laminated film.

12 . The lithium-ion rechargeable battery according to claim 10 , wherein a part of the substrate is exposed without being covered with the laminated film.

13 . The lithium-ion rechargeable battery according to claim 7 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

14 . The lithium-ion rechargeable battery according to claim 8 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

15 . The lithium-ion rechargeable battery according to claim 9 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

16 . The lithium-ion rechargeable battery according to claim 10 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

17 . The lithium-ion rechargeable battery according to claim 11 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

18 . The lithium-ion rechargeable battery according to claim 12 , wherein the second polarity layer provided to the battery part and the metal layer exposed at the exposed portion of the laminated film are in direct contact with each other.

19 . A method for producing a lithium-ion rechargeable battery, comprising:
a process of depositing a first polarity layer on one surface of a substrate, the first polarity layer occluding and releasing a lithium ion with a first polarity; a process of depositing a solid electrolyte layer on the first polarity layer, the solid electrolyte layer containing an inorganic solid electrolyte having lithium-ion conductivity; a process of depositing a second polarity layer on the solid electrolyte layer, the second polarity layer occluding and releasing a lithium ion with a second polarity, which is opposite to the first polarity; and a process of sealing the first polarity layer, the solid electrolyte layer and the second polarity layer by adhesion of a resin layer, of a laminated film including a metal layer and the resin layer laminated on one surface of the metal layer to form an exposed portion where a part of the metal layer is exposed, in a state where the laminated film is disposed to cause the metal layer exposed at the exposed portion to face the second polarity layer.

Assignees

• Showa Denko Kk
• Showa Denko Packaging Co Ltd

Inventors

• Sakawaki Akira
• Yasuda Takaki
• Minamitani Koji

Classifications

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/052 Primary

  Li-accumulators · CPC title

• H01M50/133

  Thickness · CPC title