SECONDARY BATTERY METAL TERMINAL COATING RESIN FILM, METHOD FORMANUFACTURING SAME AND BATTERY PACK

• US 20150311483A1
• Filed: 07/02/2015
• Published: 10/29/2015
• Est. Priority Date: 01/07/2013
• Status: Active Grant

• Current Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Original Assignee: Toppan Printing Co., Ltd. (TOPPAN Holdings, Inc.)
• Inventors: TAKADA, Takehisa
• Granted Patent: US 10,644,273 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29C 2948/92647 Thickness
• CPC Class Codes: B29C 2948/92695 Viscosity; Melt flow index [MFI]; Molecular weight
• CPC Class Codes: B29C 2948/92876 Feeding, melting, plasticising or pumping zones, e.g. the melt itself
• CPC Class Codes: B29C 2948/92942 Moulded article
• CPC Class Codes: B29C 48/0018 combined with shaping by orienting, stretching or shrinking, e.g. film blowing B29C48/0017 takes precedence
• CPC Class Codes: B29C 48/03 characterised by the shape of the extruded material at extrusion
• CPC Class Codes: B29C 48/92 Measuring, controlling or regulating
• CPC Class Codes: B29C 55/28 of blown tubular films, e.g. by inflation extrusion moulding of tubular films B29C48/03
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/12 PP, i.e. polypropylene
• CPC Class Codes: B29L 2009/00 Layered products
• CPC Class Codes: B29L 2009/003 comprising a metal layer
• CPC Class Codes: B29L 2031/3468 Batteries, accumulators or fuel cells battery cases B29L2031/7146
• CPC Class Codes: B29L 2031/3481 Housings or casings incorporating or embedding electric or electronic elements
• 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: B32B 7/027 Thermal properties
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/129 : with two or more layers of only organic material
• CPC Class Codes: H01M 50/133 : Thickness
• CPC Class Codes: H01M 50/136 : Flexibility or foldability
• CPC Class Codes: H01M 50/188 : the sealing members being arranged between the lid and terminal
• CPC Class Codes: H01M 50/193 : Organic material
• CPC Class Codes: H01M 50/197 : having a layered structure
• CPC Class Codes: H01M 50/198 : characterised by physical properties, e.g. adhesiveness or hardness
• CPC Class Codes: H01M 50/562 : characterised by the material
• CPC Class Codes: H01M 50/564 : characterised by their manufacturing process
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries

Abstract

A secondary battery metal terminal coating resin film having improved overall performance and capable of securing filling ability, adhesive properties, insulating properties of a lead end portion and shape retention properties of a sealant, a manufacturing method for the same and a battery pack using the secondary battery metal terminal coating resin film in provided in the lead end portion of a tab used for a laminate-type packaging material for a secondary battery. The secondary battery metal terminal coating resin film (24) according to the present invention is laminated, coating metal terminal (26) connected to a positive electrode or a negative electrode of a secondary battery. The melt flow rate of at least one layer of a resin that constitutes the resin film (24) is within a range from about 0.1 g/10 minutes to about 2.5 g/10 minutes.

Claims

1. A secondary battery metal terminal coating resin film, comprising:

a laminated structure that is capable of, coating a metal terminal connected to a positive electrode or a negative electrode of a secondary battery, and,

wherein a melt flow rate of at least one layer of a resin that constitutes the resin film is within a range from about 0.1 g/10 minutes to about 2.5 g/10 minutes.

7. The secondary battery metal terminal coating resin film according to claim 1, wherein the resin film has three layers, including a core layer as an intermediate layer of the resin film and skin layers as other layers of the resin film, and wherein a film thickness of the core layer is within a range from about 20 μ

m to about 200 μ

m.

8. A battery pack comprising the secondary battery metal terminal coating resin film according to claim 1.

9. A manufacturing method of the secondary battery metal terminal coating resin film according to claim 1, wherein the resin film is manufactured by inflation molding.

2. A secondary battery metal terminal coating resin film, comprising:

a laminated structure that is capable of coating a metal terminal connected to a positive electrode or a negative electrode of a secondary battery, and,

wherein the resin film has three layers including a core layer as an intermediate layer of the resin film and skin layers as other layers of the resin film, and,

wherein a difference of a melt flow rate between the core layer and the skin layers is within a range from about 5 g/10 minutes to about 30 g/10 minutes.

4. The secondary battery metal terminal coating resin film according to claim 2,

wherein at least one layer of the skin layers is an acid modified polyolefin resin.

5. The secondary battery metal terminal coating resin film according to claim 2,

wherein a melt flow rate of at least one layer of a resin that constitutes the resin film is within a range from about 0.1 g/10 minutes to about 2.5 g/10 minutes.

3. A secondary battery metal terminal coating resin film, comprising:

a laminated structure that is capable of coating a metal terminal connected to a positive electrode or a negative electrode of a secondary battery,

wherein the resin film has three layers including a core layer as an intermediate layer of the resin film and skin layers as other layers of the resin film, and,

wherein a film thickness of the core layer is within a range from about 20 μ

m to about 200 μ

m.

6. The secondary battery metal terminal coating resin film according to claim 3,

wherein a difference of a melt flow rate between the core layer and the skin layers is within a range from about 5 g/10 minutes to about 30 g/10 minutes.