GB2193834A - Battery casings - Google Patents
Battery casings Download PDFInfo
- Publication number
- GB2193834A GB2193834A GB08713593A GB8713593A GB2193834A GB 2193834 A GB2193834 A GB 2193834A GB 08713593 A GB08713593 A GB 08713593A GB 8713593 A GB8713593 A GB 8713593A GB 2193834 A GB2193834 A GB 2193834A
- Authority
- GB
- United Kingdom
- Prior art keywords
- battery casing
- layer
- battery
- lacquer
- plastics material
- 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
- 239000004922 lacquer Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000002987 primer (paints) Substances 0.000 claims description 3
- 239000004923 Acrylic lacquer Substances 0.000 claims description 2
- 239000000020 Nitrocellulose Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 2
- 229920001220 nitrocellulos Polymers 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 abstract description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001465 metallisation Methods 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
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
-
- 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)
Abstract
A battery casing (10) comprises a base film (12) of plastics material having a metallised coating (14) on one surface and a layer (16) of lacquer on the metallised surface. Finally, a layer (18) of pressure sensitive adhesive is on the lacquer layer, so that the casing can be adhered to a battery shell (22). <IMAGE>
Description
SPECIFICATION
Battery casings
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.
Thus two, wrapping operations are involved.
Furthermore, the plastics inner wrapping may not be entirely effective as, for example, may split upon impact.
The object of this invention is to provide a battery casing that is 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 inner surface and a coating of lacquer on the metallised surface.
The plastics material is preferably heat shrinkable to facilitate wrapping of the battery contents therein i.e. 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 lacquer may be any suitable lacquer for adhering to a metallised surface and for providing electrical insulation and corrosion protection, particularly against attack on the metallised surface by potassium hydroxide leaking from the battery contents.
Examples of suitable lacquers for use in the invention include polyvinyl chloride/polyvinylidene chloride type lacquers, nitrocellulose lacquers and acrylic lacquers.
The advantage of the battery casings when made can be applied in one operation whereas hitherto casings for batteries have involved the application of two or more layers, such as a plastics inner layer and a metal sheet outer layer. The speed of production of batteries and possibly therefore, a reduction in costs may be provided by the present invention.
The actual casings of the invention can be made in continuous process involving firstly metallization and then coating with lacquer.
For securing the casings of the invention to a battery shell, the lacquer layer may have an adhesive coating thereon, preferably of a pressure sensitive type.
The plastics layer can have advantages in being resilient and so less susceptible to danger, such as splitting, for example if dropped and in being receptive to printing techniques for application of trade names constitutions and other relevant data. The plastics layer may have a primer coating, applied to its intended outer surface to render it more receptive to printing or it could be treated say by corona discharge to the same effect.
Furthermore, the lacquer layer provides an insulation break between the battery shell and the metal coating.
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 and a layer 16 of a pvc/pvdc lacquer on the metallised coating.
Finally, a layer 18 of pressure sensitive adhesive is on the lacquer layer 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.
The outer surface of the polyvinyl chloride layer 12 will usually be printed on and it may be necessary firstly to apply a primer coating to render the layer 12 receptive to print.
Claims (10)
1. A battery casing comprising a layer of filmic plastics material metallised on its intended inner surface and a coating of lacquer on the metallised 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 material is monoaxially 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 lacquer is selected from polyvinyl chloride/polyvinylidene chloride type lacquers, nitrocellulose lacquers and acrylic lacquers.
6. A battery casing as claimed in anyone of claims 1 to 5, wherein the lacquer layer has an adhesive coating thereon.
7. A battery casing as claimed in claim 6, wherein the adhesive coating is of a pressure sensitive type.
8. A battery casing as claimed in any one of claims 1 to 7, wherein the plastics layer 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 7, wherein the plastics layer is treated by corana discharge to render it more receptive to printing.
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 |
|---|---|---|---|
| GB868614385A GB8614385D0 (en) | 1986-06-13 | 1986-06-13 | Battery casings |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8713593D0 GB8713593D0 (en) | 1987-07-15 |
| GB2193834A true GB2193834A (en) | 1988-02-17 |
| GB2193834B GB2193834B (en) | 1989-12-28 |
Family
ID=10599399
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868614385A Pending GB8614385D0 (en) | 1986-06-13 | 1986-06-13 | Battery casings |
| GB8713593A Expired GB2193834B (en) | 1986-06-13 | 1987-06-10 | Battery casings |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB868614385A Pending GB8614385D0 (en) | 1986-06-13 | 1986-06-13 | Battery casings |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8614385D0 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2241375A (en) * | 1990-01-13 | 1991-08-28 | Ultramark Adhesive Products Li | Battery casings |
| FR2674979A1 (en) * | 1991-04-04 | 1992-10-09 | Rotanotice Sa | Protection and decoration label especially for an electric battery |
| FR2680132A1 (en) * | 1991-08-05 | 1993-02-12 | Rotanotice Sa | Method for obtaining a protective and decorative label around the cylindrical body of an electric battery |
| US5747192A (en) * | 1995-06-07 | 1998-05-05 | Avery Dennison Corporation | Single ply PSA labels for battery applications |
| EP0841709A1 (en) * | 1996-11-08 | 1998-05-13 | Rotanotice | Protection and decoration label, especially for electric battery |
| US5766795A (en) * | 1984-08-16 | 1998-06-16 | Zweckform Etikettiertechnik Gmbh | Multilayer adhesive label |
| EP0762365B1 (en) * | 1995-08-16 | 2000-06-28 | Steinbeis IBL GmbH | Adhesive label |
| EP2983228A1 (en) * | 2014-08-05 | 2016-02-10 | Dongguan Amperex Technology Limited | Electrochemical energy storage device |
-
1986
- 1986-06-13 GB GB868614385A patent/GB8614385D0/en active Pending
-
1987
- 1987-06-10 GB GB8713593A patent/GB2193834B/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5766795A (en) * | 1984-08-16 | 1998-06-16 | Zweckform Etikettiertechnik Gmbh | Multilayer adhesive label |
| US5935730A (en) * | 1984-08-16 | 1999-08-10 | Zweckform Etikettiertechnik Gmbh | Multilayer adhesive label |
| GB2241375A (en) * | 1990-01-13 | 1991-08-28 | Ultramark Adhesive Products Li | Battery casings |
| GB2241375B (en) * | 1990-01-13 | 1994-07-13 | Ultramark Adhesive Products Li | Battery casings |
| FR2674979A1 (en) * | 1991-04-04 | 1992-10-09 | Rotanotice Sa | Protection and decoration label especially for an electric battery |
| FR2680132A1 (en) * | 1991-08-05 | 1993-02-12 | Rotanotice Sa | Method for obtaining a protective and decorative label around the cylindrical body of an electric battery |
| US5747192A (en) * | 1995-06-07 | 1998-05-05 | Avery Dennison Corporation | Single ply PSA labels for battery applications |
| EP0762365B1 (en) * | 1995-08-16 | 2000-06-28 | Steinbeis IBL GmbH | Adhesive label |
| US6248427B1 (en) | 1995-08-16 | 2001-06-19 | Zweckform Etikettiertechnik Gmbh | Adhesive label |
| EP0841709A1 (en) * | 1996-11-08 | 1998-05-13 | Rotanotice | Protection and decoration label, especially for electric battery |
| EP2983228A1 (en) * | 2014-08-05 | 2016-02-10 | Dongguan Amperex Technology Limited | Electrochemical energy storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2193834B (en) | 1989-12-28 |
| GB8614385D0 (en) | 1986-07-16 |
| GB8713593D0 (en) | 1987-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980610 |