GB2241375A - Battery casings - Google Patents
Battery casings Download PDFInfo
- Publication number
- GB2241375A GB2241375A GB9100598A GB9100598A GB2241375A GB 2241375 A GB2241375 A GB 2241375A GB 9100598 A GB9100598 A GB 9100598A GB 9100598 A GB9100598 A GB 9100598A GB 2241375 A GB2241375 A GB 2241375A
- Authority
- GB
- United Kingdom
- Prior art keywords
- battery
- battery casing
- casing
- metallised
- plastics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002987 primer (paints) Substances 0.000 claims 2
- 239000010408 film Substances 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000134 Metallised film Polymers 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/02—Thermal shrinking
- B29C61/025—Thermal shrinking for the production of hollow or tubular articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
- B29C63/423—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings specially applied to the mass-production of externally coated articles, e.g. bottles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Abstract
A battery casing (10) comprises a base film (12) of plastics material e.g. heat-shrinkable plastics, a metallised coating (14) on its outward facing surface and a layer of adhesive (18) on its inner surface to adhere the casing to the battery shell (22). The metallised coating (14) may have a layer of primer (16) to render it receptive to print. <IMAGE>
Description
Title: Battery Casings
DESCRIPTION
This invention concerns casings for batteries.
A requirement of battery casings is that they be resistant to chemical attack from the inside. In particular, resistance to KOH corrosion is desirable. In addition, impact resistance is desirable so that casings do not split open, say when dropped onto a hard surface.
Furthermore, the positive and negative terminals of a battery must be properly insulated from each other. Therefore, the battery should be encased in an insulating material to avoid voltage drop.
Battery casings are usually made from metal foil or sheet but the inner surface thereof has to be protected against corrosive attack from the battery contents and also insulated from the battery contents.
This may be done by first wrapping the battery shell in plastics film before wrapping in the metal sheet or foil.
A battery casing has been proposed in Go2193834 that uses at filmic plastics material metallised on its intended inner surface and said metallised surface being insulated from the battery shell by a coating of lacquer. Although this means only one wrapping operation is required, the application of the lacquer coating complicates the process of preparing the metallised film.
The aim of this invention is to provide an improved battery casing that will be protected against corrosion from inside the battery.
According to the invention a battery casing comprises a layer of preferably filmic plastics material metallised on its intended outer surface and with an adhesive coating on its intended inner surface.
The plastics material is preferably heat shrinkable to facilitate wrapping of the battery contents therein ie. by heating.
A plastics material suitable for this purpose is monoaxially orientated rigid polyvinyl chloride but other plastics materials, such as polypropylene, may be used.
The surface of the plastics material may be treated with a primer to aid keying of the metallised coating to the plastics material.
The advantage of the battery casing when made is that it can be prepared in a single operation and without the need of adding an insulating coating between the metallised surface and the battery shell, insulation being already provided by the plastics layer.
The plastics layer can have advantages in being resilient and so less susceptible to danger, such as splitting, for example if dropped. The adhesive coating on the plastics layer will be preferably of a pressuresensitive type.
The metallised surface may have a primer or lacquer coating applied to the intended outer surface to render it more receptive to printing.
The invention will now further be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 shows a battery casing; and
Figure 2 shows in section a battery having a
casing of Figure 1.
Referring to Figure 1 of the drawings, a casing 10 for a battery comprises a base film 12 of polyvinyl chloride having a metallised coating 14 on one surface whose adherence may be promoted by a primer on the pvc layer and a layer 16 of a primer on the metallised coating to render it receptive to print. In addition, there is a layer 18 of pressure sensitive adhesive on the base film so that the casing 10 can be adhered to a battery shell 22 as shown in Figure 2.
In Figure 2, a battery 20 comprises the shell 22 closed at one end providing one electrical contact 24 and having at the other end an insulated plug 26 with a plate contact 28 attached to the end of electrode 30 within the shell 22. The plate contact 28 is separated from the shell 22 by a disc of insulating material 29.
The shell 22 contains electrolyte 31 in paste form surrounding the electrode 30.
The shell 22 is enclosed in the protective casing 10 of Figure 1 shrink wrapped onto the shell.
Claims (10)
1. A battery casing comprising a layer of filmic plastics material metallised on its intended outer surface and with an adhesive coating on its intended inner surface.
2. A battery casing as claimed in Claim 1, wherein the plastics material is heat shrinkable.
3. A battery casing as claimed in Claim 2 wherein the plastics materials is mono-axially orientated rigid polyvinyl chloride.
4. A battery casing as claimed in Claim 2 wherein the plastics material is polypropylene.
5. A battery casing as claimed in any one of Claims 1 to 4, wherein the surface of the plastics material is treated with a primer to aid keying of the metallised coating to the plastics material.
6. A battery casing as claimed in any one of Claims 1 to 5 wherein insulation between the metallised surface and the battery shell is provided by the plastics layer only.
7. A battery casing claimed in any one of Claims 1 to, wherein the adhesive coating on the plastics layer is of a pressure-sensitive type.
8. A battery casing as claimed in any one of Claims 1 to 7, wherein the metallised surface has a primer coating applied to its intended outer surface to render it more receptive to printing.
9. A battery casing as claimed in any one of claims 1 to 8, wherein said casing can be prepared in a single operation.
10. A battery casing substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909000806A GB9000806D0 (en) | 1990-01-13 | 1990-01-13 | Battery casings |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9100598D0 GB9100598D0 (en) | 1991-02-27 |
| GB2241375A true GB2241375A (en) | 1991-08-28 |
| GB2241375B GB2241375B (en) | 1994-07-13 |
Family
ID=10669274
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB909000806A Pending GB9000806D0 (en) | 1990-01-13 | 1990-01-13 | Battery casings |
| GB9100598A Expired - Fee Related GB2241375B (en) | 1990-01-13 | 1991-01-11 | Battery casings |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB909000806A Pending GB9000806D0 (en) | 1990-01-13 | 1990-01-13 | Battery casings |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9000806D0 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000011731A1 (en) * | 1998-08-21 | 2000-03-02 | Eveready Battery Company, Inc. | Battery having printed label |
| US6670073B2 (en) | 1998-08-21 | 2003-12-30 | Eveready Battery Company, Inc. | Battery constructions having increased internal volume for active components |
| USRE38518E1 (en) | 1998-08-21 | 2004-05-18 | Eveready Battery Company, Inc. | Battery constructions having increased internal volume for active components |
| AT511819A4 (en) * | 2011-09-15 | 2013-03-15 | Avl List Gmbh | ELECTRIC ENERGY STORAGE |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287274A (en) * | 1978-10-03 | 1981-09-01 | Pakcel Converters Limited | Composite flexible film laminate |
| GB2103008A (en) * | 1981-03-30 | 1983-02-09 | Union Carbide Corp | Galvanic dry cell and method for sealing same |
| US4409051A (en) * | 1979-10-31 | 1983-10-11 | Duracell Inc. | Method of jacketing a battery with a self-adhesive battery jacket and article |
| US4511416A (en) * | 1981-12-08 | 1985-04-16 | Duracell Inc. | Method for making decorated battery casings |
| GB2193834A (en) * | 1986-06-13 | 1988-02-17 | Ultramark Adhesive Products | Battery casings |
| US4818588A (en) * | 1985-11-20 | 1989-04-04 | Dai Nippon Insatsu Kabushiki Kaisha | Packaging materials |
-
1990
- 1990-01-13 GB GB909000806A patent/GB9000806D0/en active Pending
-
1991
- 1991-01-11 GB GB9100598A patent/GB2241375B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287274A (en) * | 1978-10-03 | 1981-09-01 | Pakcel Converters Limited | Composite flexible film laminate |
| US4409051A (en) * | 1979-10-31 | 1983-10-11 | Duracell Inc. | Method of jacketing a battery with a self-adhesive battery jacket and article |
| GB2103008A (en) * | 1981-03-30 | 1983-02-09 | Union Carbide Corp | Galvanic dry cell and method for sealing same |
| US4511416A (en) * | 1981-12-08 | 1985-04-16 | Duracell Inc. | Method for making decorated battery casings |
| US4818588A (en) * | 1985-11-20 | 1989-04-04 | Dai Nippon Insatsu Kabushiki Kaisha | Packaging materials |
| GB2193834A (en) * | 1986-06-13 | 1988-02-17 | Ultramark Adhesive Products | Battery casings |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000011731A1 (en) * | 1998-08-21 | 2000-03-02 | Eveready Battery Company, Inc. | Battery having printed label |
| US6670073B2 (en) | 1998-08-21 | 2003-12-30 | Eveready Battery Company, Inc. | Battery constructions having increased internal volume for active components |
| USRE38518E1 (en) | 1998-08-21 | 2004-05-18 | Eveready Battery Company, Inc. | Battery constructions having increased internal volume for active components |
| AT511819A4 (en) * | 2011-09-15 | 2013-03-15 | Avl List Gmbh | ELECTRIC ENERGY STORAGE |
| AT511819B1 (en) * | 2011-09-15 | 2013-03-15 | Avl List Gmbh | ELECTRIC ENERGY STORAGE |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9000806D0 (en) | 1990-03-14 |
| GB9100598D0 (en) | 1991-02-27 |
| GB2241375B (en) | 1994-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980111 |