Outer casing material for battery and lithium secondary battery

一种外包装、电池的技术，应用在锂蓄电池、电池组零部件、非水电解质蓄电池等方向，能够解决搭载空间形状不固定、车载电源搭载空间有限等问题，达到优异绝缘性能的效果

Active Publication Date: 2013-07-31
LISSENOK PACKAGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the mounting space of the on-board power supply in the vehicle is limited, and the shape of the mounting space is not fixed.

Method used

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  • Outer casing material for battery and lithium secondary battery
  • Outer casing material for battery and lithium secondary battery
  • Outer casing material for battery and lithium secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] A stretched polyethylene terephthalate film with a thickness of 12 μm (manufactured by Toray Co., Ltd., general-purpose product) and a stretched polyamide film with a thickness of 15 μm (manufactured by Kohin Corporation, Ball RX) were interposed between a 3 μm two-layer film. The liquid-curable polyurethane-based adhesive layer is dry-laminated to produce an outer layer film.

[0167] Next, the obtained outer layer film and aluminum foil (JIS standard A8079H-O) with a thickness of 40 μm were dried at a speed of 80 m / min and a roll temperature of 80° C. through a 3 μm two-component curing type polyurethane adhesive layer. Dry lamination to produce a dry laminated film containing an outer layer and a metal foil layer.

[0168] Next, PP-1 (B (copolymer component) in Table 2) shown in Table 2 as a film-like resin composition (substrate layer) is a propylene-ethylene copolymer elastomer. In addition, in Table 2 The polymerized unit means a unit derived from propylene.) and...

Embodiment 2

[0173] Examples were produced in the same manner as in Example 1, except that an unstretched polypropylene film was prepared using PP-2 shown in Table 2 as a film-like resin composition (base layer) as the base layer of the inner layer. 2 The outer packing material for the battery.

Embodiment 3

[0175] On both sides of PP-1 (resin composition (substrate layer)) shown in Table 2, a propylene-ethylene copolymer (trade name: ; PM731M; manufactured by Sun Aroma Co., Ltd.) was molded by the T-die molding method to prepare an inner layer with a composition ratio (thickness ratio) of 2:6:2 (sealant layer: base material layer: sealant layer) of 80 μm unstretched polypropylene film consisting of 3 layers.

[0176] Then, the battery exterior material of Example 3 was produced in the same manner as in Example 1 except that the unstretched polypropylene film obtained in this way was used as an inner layer.

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Abstract

An outer casing material for a battery 4 is provided, wherein an outer layer 11, a metal foil layer 10 and an inner layer 8 are laminated via an adhesive layer 5; the inner layer 8 comprises a sealant layer 8b and a base material layer 8a; the sealant layer 8b is made from a propylene-ethylene random copolymer wherein a melt flow rate at 230 DEG C. thereof is in a range of 3 to 30 g / 10 minutes; the base material layer 8a is made of a resin composition wherein a melt flow rate at 230 DEG C. thereof is in a range of 0.1 to 15 g / 10 minutes, xylene-soluble component Xs thereof satisfies the predetermined conditions, and the resin composition comprises 50 to 80% by mass of a propylene component (A) and 50 to 20% by mass of a copolymer component (B) which is an elastomer of a copolymer of propylene and ethylene and / or alpha-olefin having 4 to 12 carbons and includes 50 to 85% by mass of a polymerization unit originated from propylene.

Description

technical field [0001] The invention relates to a battery outer packaging material and a lithium secondary battery. Background technique [0002] In recent years, lithium secondary batteries have been widely used as drive sources for electronic devices such as cameras, mobile phones, and notebook computers, and as on-board power supplies for electric vehicles or hybrid vehicles. [0003] However, the mounting space of the vehicle-mounted power supply in the vehicle is limited, and the shape of the mounting space is not fixed. Therefore, similar to electronic devices, lithium secondary batteries for vehicles are required to be smaller (thinner) or lighter in weight, and also to have an increased degree of freedom in shape. [0004] As an outer packaging material for a lithium secondary battery, for example, a packaging container described in Patent Document 1 below is known. Patent Document 1 describes a packaging container including an outer layer formed of a resin layer a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/08B32B15/08H01M10/052C08L23/12C08L23/14H01M50/571
CPCY02E60/12H01M2/0287H01M10/052Y02E60/10H01M50/124
Inventor 唐津诚永田健祐仓本哲伸
Owner LISSENOK PACKAGING CO LTD
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