BATTERY PACKAGING MATERIAL, BATTERY, AND METHOD FOR PRODUCING SAME

• US 20160172638A1
• Filed: 02/27/2015
• Published: 06/16/2016
• Est. Priority Date: 03/20/2014
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: AMANO, Makoto, MOTIZUKI, Yoichi, TAKAHAGI, Atsuko, YAMASHITA, Rikiya
• Granted Patent: US 10,141,548 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 15/085 comprising polyolefins
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2439/00 Containers; Receptacles closures therefor B32B2435/00
• CPC Class Codes: B32B 2457/10 Batteries
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: G01N 21/3563 for analysing solids; Preparation of samples therefor
• CPC Class Codes: G01N 21/3577 for analysing liquids, e.g. polluted water
• CPC Class Codes: G01N 33/26 Oils; viscous liquids; paints; inks G01N33/22 takes precedence
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/129 with two or more layers of only organic material
• CPC Class Codes: H01M 50/131 characterised by physical properties, e.g. gas permeability, size or heat resistance
• CPC Class Codes: H01M 50/133 Thickness
• CPC Class Codes: H01M 50/141 for protecting against humidity
• CPC Class Codes: H01M 50/145 for protecting against corrosion
• CPC Class Codes: H01M 50/184 characterised by their shape or structure
• CPC Class Codes: H01M 50/193 Organic material
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method for producing a battery packaging material, the method including the steps of: providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm⁻¹ originating from C═O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm⁻¹ originating from bending vibration of the group —CH₂— of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.

Claims

1. A battery packaging material comprising a laminate in which at least a base material layer, a metal layer, an adhesive layer, and a sealant layer containing a polyolefin resin are laminated in this order, wherein

the sealant layer contains an amide-based lubricant,

the amount of the amide-based lubricant added to the adhesive layer is 100 ppm or less,

the value Y calculated from the following formula (1) is in the range of 250 to 750:

Y=(A×

C+B×

D)/(C+D) 

 

(1)

A;

amount of amide-based lubricant to sealant layer

B;

amount of amide-based lubricant to adhesive layer

C;

thickness of sealant layer

D;

thickness of adhesive layer, and

the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm<sup>−

1</sup> originating from C═

O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm<sup>−

1</sup> originating from bending vibration of the group —

CH₂—

of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.

2. The battery packaging material according to claim 1, wherein the amide-based lubricant is at least one of a fatty acid amide and an aromatic bis-amide.

3. The battery packaging material according to claim 1, wherein an adhesive agent layer is laminated between the base material layer and the metal layer.

4. The battery packaging material according to claim 1, wherein the amount of the amide-based lubricant to the sealant layer is 500 to 2000 ppm.

5. The battery packaging material according to claim 1, wherein the sealant layer has a thickness of 10 to 30 μ

m.

6. The battery packaging material according to claim 1, wherein the adhesive layer has a thickness of 10 to 30 μ

m.

7. The battery packaging material according to claim 1, wherein the laminate has a thickness of 120 μ

m or less.

8. The battery packaging material according to claim 1, wherein the sealant layer has a crystallinity degree of 30 to 60% as calculated from the spectral intensity ratio of a crystalline portion and a noncrystalline portion of the sealant layer using a Raman spectroscopic method.

9. The battery packaging material according to claim 1, wherein the metal layer is formed of an aluminum foil.

13. A battery comprising a battery element which includes at least a positive electrode, a negative electrode and an electrolyte, the battery element being stored in the battery packaging material according to claim 1.

10. A method for measuring the amount of an amide-based lubricant situated on the surface of a sealant layer of a battery packaging material,

the method comprising the steps of:

providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin and an amide-based lubricant are laminated in this order; and

measuring a peak intensity P at 1650 cm<sup>−

1</sup> originating from C═

O stretching vibration of the amide group of an amide-based lubricant, and a peak intensity Q at 1460 cm<sup>−

1</sup> originating from bending vibration of the group —

CH₂—

of the polyolefin resin, each from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and calculating an intensity ratio X=P/Q (ratio of the peak intensity P to the peak intensity Q).

11. A method for controlling the amount of an amide-based lubricant situated on the surface of a sealant layer of a battery packaging material,

the method including the steps of:

providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and

confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm<sup>−

1</sup> originating from C═

O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm<sup>−

1</sup> originating from bending vibration of the group —

CH₂—

of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.

12. A method for producing a battery packaging material,

the method comprising the steps of:

providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and

confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm<sup>−

1</sup> originating from C═

O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm<sup>−

1</sup> originating from bending vibration of the group —

CH₂—

of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.

14. A method for producing a battery,

the method comprising the steps of:

providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order;

confirming that the intensity ratio X=A/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm<sup>−

1</sup> originating from C═

O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm<sup>−

1</sup> originating from bending vibration of the group —

CH₂—

of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and A/Q is a ratio of the peak intensity A to the peak intensity Q; and

molding the battery packaging material with the intensity ratio X being in the range of 0.05 to 0.80, and storing in the battery packaging material a battery element including at least a positive electrode, a negative electrode and an electrolyte.