WO2003010838A2 - Procede de protection de microgenerateur au lithium et microgenerateur protege par ce procede - Google Patents
Procede de protection de microgenerateur au lithium et microgenerateur protege par ce procede Download PDFInfo
- Publication number
- WO2003010838A2 WO2003010838A2 PCT/FR2002/002568 FR0202568W WO03010838A2 WO 2003010838 A2 WO2003010838 A2 WO 2003010838A2 FR 0202568 W FR0202568 W FR 0202568W WO 03010838 A2 WO03010838 A2 WO 03010838A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- approximately
- microgenerator
- thickness
- seconds
- film
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical group C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims 1
- 239000011118 polyvinyl acetate Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000002952 polymeric resin Substances 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 238000005538 encapsulation Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 5
- 239000012300 argon atmosphere Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001351 cycling effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000002642 lithium compounds Chemical class 0.000 description 2
- 230000000135 prohibitive effect Effects 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 244000245420 ail Species 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000004611 garlic Nutrition 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/141—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against humidity
-
- 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
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/121—Organic material
-
- 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
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
-
- 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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method of protecting microgenerators and the microgenerators protected by this method. More particularly, the invention relates to a process for encapsulating “all solid” lithium microgenerators and to microgenerators encapsulated by this process.
- Microgenerators are elements based on lithium and lithium compounds and therefore they fear humidity. They must therefore be protected.
- proliferative thickness is meant a thickness such that the protected microgenerator has a thickness greater than 500 micrometers.
- One of the known protection methods consists in encapsulating the microgenerators with a polyethylene film and then with an aluminum film. Other methods use for example glass slides.
- An object of the present invention is to provide a method of protecting all solid-state lithium microgenerators leading to a moisture-tightness of said protection.
- Another object of the invention is a method for protecting all-solid-state lithium microgenerators which does not lead to a thickness prohibitive of said protection. This object is considered satisfied if the protected microgenerator has a thickness of not more than about 500 micrometers.
- Another object of the invention is to provide a method for protecting microgenerators with all-solid-state lithium, leading to a lack of reactivity with respect to the lithium of said protection.
- thermoformable product is an ethylene vinyl acetate resin also called poly (acetate of vinyl) (EVA), said process leading to a microgenerator having a protective layer.
- EVA poly (acetate of vinyl)
- microgenerator protection process of the invention may be designated by the name “encapsulation” or "encapsulation”.
- the microgenerator protected according to the method of the invention could be described as “encapsulated”.
- the thickness of said film of thermoformable product is such that the protective layer has a thickness of less than approximately 200 ⁇ m.
- the protected microgenerator has a thickness much less than about 500 ⁇ m, since the thickness of the unprotected microgenerator generally does not exceed about 90 ⁇ m.
- the protective layer is moisture-proof and non-reactive with lithium.
- the ethylene vinyl acetate resins (EVA) used in the process of the present invention to form the film of thermoformable product are polymers of the compound having the following formula (I):
- the proportion of vinyl acetate is generally between approximately 4 and approximately 30 mol%.
- the EVA resins used in the invention usually have a density between about 0.92 and about 0.98.
- thermoformable EVA resin film used in the present invention generally has a thickness ranging from approximately 30 ⁇ m to approximately 110 ⁇ m.
- the heating temperature is advantageously between approximately 70 ° C and approximately 120 ° C, better still between approximately 70 ° C and approximately 80 ° C.
- the pressure is generally between approximately 7.10 4 Pascal and approximately 1, 5.10 5 Pascal.
- the duration is usually between about 2 seconds and about 400 seconds, most often between about 2 seconds and about 5 seconds
- the encapsulation operation according to the invention is advantageously carried out under a rare gas atmosphere, in particular under an argon atmosphere.
- the present invention also provides a method for protecting all solid-state lithium microgenerators, characterized in that a protection method as described above is carried out followed by an application of an upper film, leading to a microgenerator having a so-called modified protective layer.
- the "modified protective layer” is formed by the film of thermoformable EVA product and the upper film.
- the upper film is for example a polyimide-aluminum colamine, but it can simply be an aluminum film alone or coated with polyethylene.
- the thickness of the EVA film and of the upper film are such that the modified protective layer obtained has a thickness of less than approximately 200 ⁇ m so that the protected microgenerator has a thickness of not more than approximately 500 ⁇ m.
- This protective layer is moisture-proof and non-reactive with lithium.
- the upper film used in the present invention generally has a thickness of between approximately 10 ⁇ m and approximately 50 ⁇ m.
- the present invention also relates to microgenerators protected by a method according to the invention.
- microgenerators protected by means of a protective layer by a method according to the invention are characterized in that said protective layer has a thickness of less than about 200 ⁇ m, that it is moisture-proof and non-reactive with lithium and what they have a thickness not exceeding about 500 micrometers.
- Examples 1, 2 and 3 illustrate embodiments not in accordance with the invention
- Examples 4 and 5 illustrate embodiments in accordance with the invention. Comparative Example 1 (not in accordance with the invention)
- a lithium microgenerator is encapsulated under argon with a 100 micrometers thick polyester heat-bondable film lined with a glass slide, the thickness of which is also 100 micrometers. This encapsulation is carried out at a temperature of 130 ° C., which is conventionally recommended for this type of material, and a pressure of 1.10 5 Pa for a period of 30 seconds.
- a lithium microgenerator is encapsulated in an inert argon atmosphere at atmospheric pressure for a period of 60 seconds, using an epoxy varnish polymerized at room temperature deposited with a brush.
- the open circuit voltage of the encapsulated microgenerator is zero and it cannot be recharged.
- a lithium microgenerator is encapsulated with a low density polyethylene film whose thickness is 100 micrometers, lined with aluminum foil 20 micrometers thick. The operation is carried out at a temperature of 110 ° C. and at a pressure of 1.10 5 Pa of argon for a period of 120 seconds.
- the microgenerator After encapsulation, the microgenerator has electrical characteristics in line with those expected.
- microgenerator is then subjected to an accelerated aging test consisting in exposing it for 200 hours to a humid atmosphere (relative humidity of 90%) at a temperature of 32 ° C.
- a humid atmosphere relative humidity of 90%
- observation of the microgenerator shows that the encapsulation film is partly peeled off; in the corresponding areas the lithium and the lithium compounds have been degraded by humidity and the microgenerator is out of order.
- a lithium / TiS 2 microgenerator with a total thickness of less than 300 ⁇ M is encapsulated in accordance with the invention with an EVA film.
- This EVA film is marketed by 3M under the name Thermo-Bond film. It has a thickness of 100 micrometers.
- the EVA film is lined with an aluminum film 20 micrometers thick (upper film).
- the encapsulation operation is carried out at 110 ° C., under a pressure of 1.10 5 Pa under an argon atmosphere, these conditions being maintained for 300 seconds.
- the microgenerator obtained is subjected to an accelerated aging test consisting of exposing it 240 hours in a controlled atmosphere under a relative humidity of 90% and a temperature of 32 ° C. At the end of the test, the observation of the microgenerator does not show any change in appearance.
- the microgenerator obtained is then subjected to tests intended to control its electrical characteristics. It can be seen that the open circuit voltage is 2.4 V, which complies with the specifications.
- microgenerator obtained is then subjected to the following tests:
- the open circuit voltage is 2.4 V, which is in line with the expected value.
- a microgenerator of the same type as that described in Example 4 is encapsulated with the aluminum-lined EVA film (upper film) as described in Example 4, but the application conditions are as follows:
- the encapsulated microgenerator obtained is then subjected to the same aging test as that described in Example 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0109862 | 2001-07-24 | ||
FR0109862A FR2828010B1 (fr) | 2001-07-24 | 2001-07-24 | Procede de protection de microgenerateur au lithium et microgenerateur protege par ce procede |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003010838A2 true WO2003010838A2 (fr) | 2003-02-06 |
WO2003010838A3 WO2003010838A3 (fr) | 2004-10-28 |
Family
ID=8865839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002568 WO2003010838A2 (fr) | 2001-07-24 | 2002-07-18 | Procede de protection de microgenerateur au lithium et microgenerateur protege par ce procede |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2828010B1 (fr) |
WO (1) | WO2003010838A2 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0852404A1 (fr) * | 1996-04-23 | 1998-07-08 | Sumitomo Electric Industries, Ltd. | Cellules d'electrolyte anhydre |
WO1999047350A1 (fr) * | 1998-03-18 | 1999-09-23 | Ntk Powerdex, Inc. | Materiau pour enveloppes de batteries hermetiques |
EP0975031A1 (fr) * | 1998-02-05 | 2000-01-26 | Dai Nippon Printing Co., Ltd. | Feuille pour boitier de cellule et dispositif a cellule |
US6145280A (en) * | 1998-03-18 | 2000-11-14 | Ntk Powerdex, Inc. | Flexible packaging for polymer electrolytic cell and method of forming same |
EP1102336A1 (fr) * | 1999-04-08 | 2001-05-23 | Dai Nippon Printing Co., Ltd. | Materiau d'emballage de pile, sachet de transport de pile et procede de production connexe |
JP2001189151A (ja) * | 1999-11-26 | 2001-07-10 | Samsung Sdi Co Ltd | 電池の外装材 |
JP2002025511A (ja) * | 2000-07-06 | 2002-01-25 | Showa Denko Kk | 電池用外装包材 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10323952A (ja) * | 1997-05-23 | 1998-12-08 | Nippon Unicar Co Ltd | 熱収縮性フィルム |
-
2001
- 2001-07-24 FR FR0109862A patent/FR2828010B1/fr not_active Expired - Fee Related
-
2002
- 2002-07-18 WO PCT/FR2002/002568 patent/WO2003010838A2/fr not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0852404A1 (fr) * | 1996-04-23 | 1998-07-08 | Sumitomo Electric Industries, Ltd. | Cellules d'electrolyte anhydre |
EP0975031A1 (fr) * | 1998-02-05 | 2000-01-26 | Dai Nippon Printing Co., Ltd. | Feuille pour boitier de cellule et dispositif a cellule |
WO1999047350A1 (fr) * | 1998-03-18 | 1999-09-23 | Ntk Powerdex, Inc. | Materiau pour enveloppes de batteries hermetiques |
US6145280A (en) * | 1998-03-18 | 2000-11-14 | Ntk Powerdex, Inc. | Flexible packaging for polymer electrolytic cell and method of forming same |
EP1102336A1 (fr) * | 1999-04-08 | 2001-05-23 | Dai Nippon Printing Co., Ltd. | Materiau d'emballage de pile, sachet de transport de pile et procede de production connexe |
JP2001189151A (ja) * | 1999-11-26 | 2001-07-10 | Samsung Sdi Co Ltd | 電池の外装材 |
JP2002025511A (ja) * | 2000-07-06 | 2002-01-25 | Showa Denko Kk | 電池用外装包材 |
Non-Patent Citations (4)
Title |
---|
DATABASE WPI Section Ch, Week 199908 Derwent Publications Ltd., London, GB; Class A17, AN 1999-089515 XP002195463 & JP 10 323952 A (NIPPON UNICAR CO LTD), 8 décembre 1998 (1998-12-08) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 24, 11 mai 2001 (2001-05-11) -& JP 2001 189151 A (SAMSUNG SDI CO LTD), 10 juillet 2001 (2001-07-10) * |
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05, 3 mai 2002 (2002-05-03) -& JP 2002 025511 A (SHOWA DENKO KK), 25 janvier 2002 (2002-01-25) * |
SATOH M ET AL: "POLYMER BATTER PACKED WITH LAMINATED FILM" NEC RESEARCH AND DEVELOPMENT, NIPPON ELECTRIC LTD. TOKYO, JP, vol. 41, no. 1, janvier 2000 (2000-01), pages 18-23, XP000945503 ISSN: 0547-051X * |
Also Published As
Publication number | Publication date |
---|---|
FR2828010A1 (fr) | 2003-01-31 |
FR2828010B1 (fr) | 2007-01-19 |
WO2003010838A3 (fr) | 2004-10-28 |
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