WO2004065483A1 - 吸液性組成物、吸液性シート及び非水電解液電池パック - Google Patents
吸液性組成物、吸液性シート及び非水電解液電池パック Download PDFInfo
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- WO2004065483A1 WO2004065483A1 PCT/JP2003/016331 JP0316331W WO2004065483A1 WO 2004065483 A1 WO2004065483 A1 WO 2004065483A1 JP 0316331 W JP0316331 W JP 0316331W WO 2004065483 A1 WO2004065483 A1 WO 2004065483A1
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- liquid
- absorbing
- absorbent
- maleic anhydride
- isocyanate compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L35/08—Copolymers with vinyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/10—Homopolymers or copolymers of unsaturated ethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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 of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
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- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
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- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0085—Immobilising or gelification of electrolyte
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
Definitions
- the present invention provides a liquid-absorbing composition and a liquid-absorbing sheet for absorbing an electrolyte when the electrolyte leaks from a non-aqueous electrolyte battery cell in the non-aqueous electrolyte battery pack. And a non-aqueous electrolyte battery pack using the same.
- a battery pack in which a plurality of primary battery cells or secondary battery cells and a printed circuit board are stored in a battery case is widely used.
- the wiring of the printed circuit board may be corroded, resulting in poor conduction or short-circuiting. Therefore, even if electrolyte leakage occurs, in order to prevent the above-mentioned corrosion and short-circuit problems from occurring, a position that contacts or is close to the battery cells in the battery pack
- a liquid-absorbing member provided with a liquid-absorbing agent capable of absorbing an electrolytic solution
- various polymer materials of an adsorption type, a gelation type, and a self-swelling type are used as the liquid absorbing agent.
- polyacrylic acid salt type water absorbing resin starch-graft copolymer type water absorbing resin, polyvinyl alcohol type water absorbing resin, polyacrylamide type water absorbing resin, isobutylene-maleic acid copolymer
- examples thereof include a combined water-absorbing resin, a long-chain alkyl acrylate crosslinked polymer, and polynorpolene.
- liquid absorbing agents are used in non-aqueous electrolyte battery packs, which have been widely used in recent years, and particularly in lithium ion non-aqueous electrolyte secondary battery packs.
- a carbonate-based solvent widely used in the resulting nonaqueous electrolyte secondary battery for example, propylene carbonate-ethylene carbonate.
- the present invention is intended to solve the above-mentioned problems of the conventional technology, and includes a non-aqueous electrolyte battery constituting a non-aqueous electrolyte battery pack (particularly, a lithium ion non-aqueous electrolyte secondary battery pack).
- the present invention provides a liquid-absorbing composition and a liquid-absorbing sheet containing a liquid-absorbent crosslinked resin exhibiting excellent liquid-absorbing properties with respect to a nonaqueous electrolytic solution of a secondary battery.
- An object of the present invention is to provide a method for producing a resin, and to provide a battery pack provided with such an absorbent composition and an electrolytic solution absorbing member formed from the absorbent sheet. Disclosure of the invention
- the present inventors have found that when a methylvinyl ether maleic anhydride copolymer is cross-linked with a polyfunctional isocyanate compound in a solvent such as MEK, a liquid-absorbent cross-linked resin that gels and encapsulates the solvent is formed.
- the obtained liquid-absorbent crosslinked resin was found to be extremely excellent in the ability to absorb and hold the nonaqueous electrolyte of the nonaqueous electrolyte battery, and completed the present invention.
- the present invention provides a liquid absorbing liquid comprising: a powder of a liquid-absorbent crosslinked resin obtained by crosslinking a methylbutyl ether maleic anhydride copolymer with a polyfunctional isocyanate compound; and a pine resin.
- a liquid absorbing liquid comprising: a powder of a liquid-absorbent crosslinked resin obtained by crosslinking a methylbutyl ether maleic anhydride copolymer with a polyfunctional isocyanate compound; and a pine resin.
- An ionic composition is provided.
- the present invention is characterized in that a liquid-absorbent crosslinked resin layer formed by cross-linking a methyl vinyl ether maleic anhydride copolymer with a polyfunctional isocyanate compound is formed on one surface of a supporting substrate. To provide a liquid absorbing sheet.
- the methyl vinyl ether maleic anhydride copolymer is added in a solvent having an SP value of 9 to 14 by 3 to 35% by weight. / 0, and a cross-linking reaction is carried out by adding a polyfunctional isocyanate compound to the solution.
- a method for producing a liquid bridge resin is provided.
- the present invention also provides a non-aqueous electrolyte battery cell, a printed circuit board, and an electrolyte absorbing member for absorbing the electrolyte when the electrolyte leaks from the battery cell in the battery case.
- FIG. 1 is a cross-sectional view of the liquid-absorbent sheet of the present invention.
- FIG. 2 is a cross-sectional view of the liquid-absorbent sheet of the present invention.
- FIG. 3 is a perspective view of the nonaqueous electrolyte battery pack of the present invention.
- FIG. 4 is a perspective view of the nonaqueous electrolyte battery pack of the present invention.
- FIG. 5 is a perspective view of the nonaqueous electrolyte battery pack of the present invention.
- FIG. 10 is a diagram showing the degree of swelling of the liquid-absorbent crosslinked resin when a large amount of a crosslinking agent is used.
- FIG. 11 is an explanatory diagram of an electrolytic solution absorption test using a simulated battery pack. BEST MODE FOR CARRYING OUT THE INVENTION First, the liquid absorbing composition of the present invention will be described.
- This liquid-absorbing composition contains a powder of a liquid-absorbing cross-linked resin obtained by cross-linking a methylbutyl ether maleic anhydride copolymer with a polyfunctional isocyanate compound, and a binder resin.
- a liquid-absorbent crosslinked resin can absorb and retain a high-carbon solvent, particularly propylene carbonate, used in nonaqueous electrolyte batteries at a high level.
- a composition obtained by dispersing the powder of the absorbent cross-linked resin in a binder resin together with a dispersing solvent for example, toluene, methyl ethyl ketone, ethanol, etc.
- a dispersing solvent for example, toluene, methyl ethyl ketone, ethanol, etc.
- this composition can be handled as a resin coating, it can be formed into a shape having a higher degree of freedom by a known coating method or dispensing method, and therefore, the degree of freedom of the shape of the electrolyte absorbing member can be improved. Can be increased.
- the weight average molecular weight of the methylbutyl ether maleic anhydride copolymer used in the present invention is too small, effective crosslinking is difficult, and if it is too large, it becomes difficult to swell in the nonaqueous electrolyte after crosslinking. Therefore, it is preferably 5,000 to 1200, more preferably 20,000 to 900,000.
- the polyfunctional isocyanate compound used in the present invention functions as a cross-linking agent for cross-linking the methylbutyl ether / maleic anhydride copolymer. It is preferable to use a trifunctional isocyanate compound having three isocyanate groups in the molecule. Specific examples of such a trifunctional isocyanate compound include a trimethylolpropane derivative, a trimer having an isocyanurate ring, and triphenylmethane trisocyanate. .
- the crosslinking ratio of the polyfunctional isocyanate compound to the methyl vinyl ether maleic anhydride copolymer in the present invention is such that if the polyfunctional isocyanate compound is too large, it is difficult to swell in the non-aqueous electrolyte, and if it is too small, Strength after swelling Therefore, the number of moles of the polyfunctional isocyanate compound per 100 moles of the monomer unit of the methyl vinyl ether maleic anhydride copolymer is preferably 0.1 to 2 moles, more preferably 0.2 to 2 moles. 1 mole.
- the cross-linking when cross-linking a methylbutyl ether maleic anhydride copolymer with a polyfunctional isocyanate compound, the cross-linking can be carried out according to a conventional method.
- a solvent eg, MEK, etc.
- the maleic acid copolymer and the polyfunctional isocyanate compound may be charged and heated to 25 to 80 ° C.
- the liquid-absorbent crosslinked resin obtained in this manner is usually obtained as a gelled substance containing the solvent used in the cross-linking reaction, but in the liquid-absorbent composition of the present invention, such a liquid is used.
- the gel is dried and powdered.
- the dried liquid-absorbent crosslinked resin may be pulverized by using a known pulverization method (for example, a physical pulverization method).
- the average particle size of the powder is preferably 0.1 to 150 ⁇ , more preferably 2 to 50 ⁇ , because if the average particle size is too small, the powder is in a mako state, and if the average particle size is too large, the surface area is small. is there.
- a binder resin in which the liquid-absorbent crosslinked resin powder is dispersed a non-aqueous electrolyte, particularly one soluble in a carbonate-based solvent, for example, propylene carbonate, polyethylene carbonate, or the like, is used.
- a binder resin include methyl vinyl ether maleic anhydride copolymer, cyanoethyl-modified starch, polyethylene glycol, and the like.
- the mixing ratio of the liquid-absorbent crosslinked resin powder to the binder resin is such that if the amount of the liquid-absorbent crosslinked resin powder is too small, the liquid-absorbing property is reduced.
- the binder resin is preferably used in an amount of 3 to 100 parts by weight, more preferably 10 to 50 parts by weight, based on 100 parts by weight of the liquid-absorbent crosslinked resin powder.
- the liquid-absorbing sheet of the present invention which is useful as an electrolyte-absorbing member of a non-aqueous electrolyte battery pack, will be described.
- the liquid-absorbent sheet has a liquid-absorbent crosslinked resin layer 2 formed by cross-linking a methylvinyl ether-maleic anhydride copolymer with a polyfunctional isocyanate on one surface of a support substrate 1. It has a formed structure. In this case, it is preferable to form the adhesive layer 3 on the other surface of the support substrate 1. This makes it possible to easily install the liquid-absorbent sheet in the battery case.
- FIG. 1 shows a liquid-absorbent crosslinked resin layer 2 formed by cross-linking a methylvinyl ether-maleic anhydride copolymer with a polyfunctional isocyanate on one surface of a support substrate 1. It has a formed structure. In this case, it is preferable to form the adhesive layer 3 on the other surface of the support substrate 1. This makes it possible to
- an adhesive is blended into the liquid-absorbent crosslinked resin layer 2 without providing an adhesive layer, and the liquid-absorbent crosslinked resin layer 2 on the support substrate 1 is provided with tackiness. May be.
- the liquid-absorbing sheet can be installed after the battery cells are installed in the battery pack.
- the support substrate constituting the liquid-absorbent sheet of the present invention include a nonwoven fabric made of plastic fibers such as polypropylene, a polypropylene film, and the like.
- the liquid-absorbent crosslinked resin layer 2 is formed by coating a mixture of a methyl vinyl ether maleic anhydride copolymer and a polyfunctional isopropylate dispersed or dissolved in a solvent on the support substrate 1 by a conventional method. and Engineering, it is sufficient to Rigel of by the the child heating c Further, as the adhesive constituting the adhesive layer 3 provided on the back surface of the supporting substrate 1, appropriately selected from adhesives publicly known Can be used. Examples of the pressure-sensitive adhesive used for imparting tackiness to the liquid-absorbent crosslinked resin layer 2 include known partially crosslinked acrylic pressure-sensitive adhesives.
- the cross-linking ratio and the like are as already described for the liquid absorbing composition.
- liquid-absorbent bridge resin used in the above-mentioned liquid-absorbent composition and liquid-absorbent sheet will be described.
- the above-mentioned methylbutyl ether maleic anhydride copolymer is dissolved in a solvent having a 3-value of 9 to 14 so as to be 3 to 35% by weight, and the solution is also dissolved in the solution.
- the crosslinking reaction is performed by adding a functional isocyanate.
- the reason why the solvent having an SP value of 9 to 14 is used is that the methylvinyl ether maleic anhydride copolymer is well dissolved.
- the reason why the methyl vinyl ether maleic anhydride copolymer is dissolved in such a solvent so as to be 3 to 35% by weight is that if the amount is less than 3% by weight, the gelation reaction of the obtained liquid-absorbent crosslinked resin becomes impossible.
- the yield of the polymer is not sufficient, and the amount of the methylvinylester maleic anhydride copolymer not depending on the crosslinking is too large, so that the retention of the non-aqueous electrolyte of the liquid-absorbent crosslinked resin becomes insufficient.
- the content exceeds 35% by weight, the liquid absorbing property of the obtained liquid absorbing crosslinked resin is reduced.
- the weight-average molecular weight of the methyl vinyl ether maleic anhydride copolymer used in this production method, the polyfunctional isocyanate compound, the cross-linking ratio of the polyfunctional isocyanate compound to the methyl vinyl ether maleic anhydride copolymer, etc. As already described for the liquid absorbing composition.
- the liquid-absorbent composition and liquid-absorbent sheet according to the present invention are characterized in that, when a non-aqueous electrolyte battery cell, a printed circuit board, and a non-aqueous electrolyte battery cell leak in the battery case, It can be preferably used as the electrolyte absorbing member in a non-aqueous electrolyte battery pack provided with an electrolyte absorbing member for absorbing the electrolyte.
- a battery pack having a non-aqueous electrolyte battery cell 33 is provided in a battery pack in which a non-aqueous electrolyte battery cell 33 is arranged on a wiring circuit board 32 installed in a battery case 31, a battery pack having a non-aqueous electrolyte battery cell 33 is provided.
- the absorbent composition 34 may be filled between the non-aqueous electrolyte battery cells 33 as an electrolyte absorbing member for absorbing the electrolyte.
- the non-aqueous electrolyte battery cell 33 and the wiring circuit board 32 are connected by a metal lead 35, and further communicate with the external terminal 36. are doing.
- an absorbent sheet 37 as described in FIG. 1 is provided between the printed circuit board 32 and the non-aqueous electrolyte battery cell 33 by an absorbent cross-linked tree.
- the non-aqueous electrolyte battery cell 33 may be disposed such that the fat layer is on the non-aqueous electrolyte battery cell 33 side.
- the absorbent sheet 38 described in FIG. 2 is provided on the non-aqueous electrolyte battery cell 33 with the absorbent cross-linked resin layer provided thereon.
- the cells may be arranged so as to be on the cell 33 side.
- the shape of the battery case in the non-aqueous electrolyte battery pack was a rectangular parallelepiped, and the shape of the battery cells was cylindrical, but in the non-aqueous electrolyte battery pack of the present invention, There is no limitation, and shapes and arrangements can be made according to the purpose of use. Also, the type of battery cell is not limited.
- the non-aqueous electrolyte battery pack of the present invention described above is a liquid-absorbent cross-linked resin obtained by cross-linking a methylbutyl ether-maleic anhydride copolymer with a polyfunctional silicone compound as a non-aqueous electrolyte solution absorbing member material. Since it uses a liquid-absorbent cross-linked resin with excellent absorption and retention of non-aqueous electrolyte, even if the non-electrolyte leaks from the battery cells, the wiring circuit will show corrosion.
- Example c that can greatly reduce the occurrence of
- Examples 1 to 6 are examples relating to the degree of swelling
- Examples 7 to 10 are examples relating to the swelling rate
- Examples 11 to 16 are examples relating to the absorption rate.
- VEMA Methylbutyl ether maleic anhydride copolymer
- MEK methyl ethyl ketone
- a trifunctional isocyanate compound (Coronate HL, Nippon Polyurethane Industry Co., Ltd.) is used as a crosslinking agent in the solution.
- the trifunctional isocyanate compound is used in a ratio of 1 mol to 100 mol of the monomer unit of VEMA, and MEK is used in such an amount that the VEMA solid content becomes 10 wt%. did.
- Example 2 The same procedure as in Example 1 was repeated except that the amount of the trifunctional isocyanate compound used was changed to 1 mole per 300 moles of the monomer units of VEMA, whereby the liquid-absorbent cross-linked resin was obtained. Obtained.
- Example 2 The same operation as in Example 1 was repeated, except that the amount was changed to 1 mol per 100 mol, to obtain a liquid-absorbent crosslinked resin.
- a liquid-absorbent crosslinked resin was obtained by repeating the same operation as in Example 4 except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 600 mol of the monomer unit of VEMA. Was.
- VEMA solid content wt% Crosslinking mass VEMA (molar ratio)
- Example 1 10wt%: 1 0 0 9 3 1 1
- Example 2 10 wt%: 3 0 0 2 5 8 2 1
- Example 5 15wt%: 3 0 0 1 48 25
- Example 6 15 wt%: 600 1 4 0 7 6 From the results of Examples 1 to 3, it was found that when the amount of the crosslinking agent used for VEMA was reduced, swelling was facilitated. Also, comparing Examples 1 and 4, Examples 2 and 5, and Examples 3 and 6, it was found that the degree of swelling decreased as the solid content of VEMA increased.
- Example 5 Compared Example 5 with Example 6, the degree of swelling did not increase in Example 6 irrespective of the use amount of the cross-linking agent, indicating that Example 2 and Example 3 did not. The behavior was clearly different from that in the case of. This is thought to be because the VEMA solids content was 1.5 times that of Examples 2 and 3, Example 7
- VEMA weight average molecular weight 900,000; trade name: VEMA A106H 5. Daicel Chemical Industries, Ltd.
- MEK methylethyl ketone
- a cyanate compound Coronate HL, Polyurethane Industry Japan
- MEK methylethyl ketone
- the amount of the trifunctional isocyanate compound used was 1 mole per 100 moles of the monomer units constituting VEMA, and the amount of MEK used was such that the VEMA solid content was 5, 7.5, 1 The amount was 0, 15 wt%.
- a liquid-absorbent crosslinked resin was obtained in the same manner as in Example 7, except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 200 mol of the monomer unit of VEMA. The degree of swelling was measured. The results obtained are shown in Table 3 and FIG.
- a liquid-absorbent crosslinked resin was obtained in the same manner as in Example 7, except that the amount of the trifunctional isocyanate compound was changed to 1 mol per 300 mol of the monomer constituting VEMA, and the swelling degree was similarly calculated. Was measured. The results obtained are shown in Table 4 and FIG.
- a liquid-absorbent crosslinked resin was obtained in the same manner as in Example 7 except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 600 mol of the constituent unit of VEMA. The degree of swelling was measured. The results obtained are shown in Table 5 and FIG.
- Crosslinking agent VEMM molar ratio
- :: 1: 600 swelling degree
- VEMA Methylbutyl ether maleic anhydride copolymer
- MEK methyl ethyl ketone
- a trifunctional isocyanate compound (Coronate HL, Japan Polyurethane Industry Co., Ltd.) was added to the solution as a cross-linking agent, and 10 g (solid content) / m 2 , and dried at 80 ° C. for 10 minutes to obtain a liquid-absorbent film having a liquid-absorbent crosslinked resin layer.
- the trifunctional isocyanate compound was used at a ratio of 1 mol to 100 mol of the monomer unit constituting VEMA, and MEK was used in such an amount that the VEMA solid content became 10 wt%. .
- Example 11 The same procedure as in Example 11 was repeated, except that the amount of the trifunctional isocyanate compound used was 1 mol per 300 mol of the monomer unit of VEMA, thereby obtaining a liquid absorbing property. A film was obtained.
- Example 11 The same procedure as in Example 11 was repeated except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 600 mol of the monomer unit of VEMA, whereby the liquid absorbing property was obtained. A film was obtained.
- a liquid-absorbent film was obtained by repeating the same operation as in Example 11 except that MEK was used so that the VEMA solid content was 15 wt%.
- Example 16 By repeating the same operation as in Example 14 except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 300 mol of the monomer unit of VEMA, the liquid-absorbing film was obtained. Obtained.
- Example 16
- Example 14 The same procedure as in Example 14 was repeated, except that the amount of the trifunctional isocyanate compound used was changed to 1 mol per 600 mol of the monomer units of VEMA, whereby the liquid-absorbent crosslinked resin was obtained. Got.
- Example 11 Each of the liquid-absorbent films of 1 to 16 was tilted (30 degrees) with respect to the horizontal plane.
- a carbonate-based mixed solvent ethylene carbonate / propylene carbonate / dimethyl carbonate
- 0.02 ml of the mixture was added dropwise. The distance that the mixed solvent traveled before absorption was measured.
- Table 6 shows the results. The moving distance with respect to the polyester film without the liquid-absorbent crosslinked resin layer is 25 cm or more. The longer the moving distance, the slower the absorption speed.
- “VEMA solid content” is the “VEMA solid content” in a mixture of VEMA, a three-functional isocyanate compound, and MEK when the mixture is applied to a polyester film.
- VEMA type carrier VEMA (molar ratio) Travel distance (cm)
- Example 1 1 10 wt% 1 1 0 0 1 5 3
- Example 1 10 wt% 3 0 0 1 4 4
- Example 1 10wt% 6 0 0 1 6 2
- Example 1 15wt% 1 0 0 1 8 4
- Example 1 15 wt% 3 0 0 1 7 0
- Example 16 15 wt% 600 159 From Table 6, it can be seen that when the amount of the crosslinking agent used for VEMA is reduced, the absorption rate is improved. Note that when Examples 13 and 16 are compared, the actual The moving speed of Example 13 is higher than that of Example 13 because the liquid-absorbent bridge resin layer is dissolved in the electrolyte.
- VEMA Methyl vinyl ether maleic anhydride copolymer
- MEK methyl ethyl ketone
- a trifunctional isocyanate compound (Coronate HL, Nippon Polyurethane Industry Co., Ltd.) is added to the solution as a crosslinking agent, and the mixture is subjected to a crosslinking reaction at 25 for 24 hours to form a gel.
- a liquid-absorbent crosslinked resin was obtained.
- the amount of the trifunctional isocyanate compound used is 1 mol, 0.5 mol, and 0.2 mol per 1 mol of the monomer unit constituting VEMA, and the amount of MEK used is V
- the amount was such that the EMA solid content was 5 wt%.
- VEMA Methyl butyl ether maleic anhydride copolymer
- MEK methyl ethyl ketone
- a trifunctional isocyanate compound (Coronate HL, Japan Polyurethane Industry Co., Ltd.) is added to the solution as a crosslinking agent, and the mixture is subjected to a crosslinking reaction at 25 ° C for 24 hours. Gelation Thus, a liquid-absorbent crosslinked resin was obtained.
- the amount of the trifunctional isocyanate compound used is 1 mole based on 3,000,000 moles of the monomer unit of VEMA, and the amount of MEK used is such that the VEMA solid content becomes 15 wt%.
- liquid-absorbent crosslinked resin When the obtained liquid-absorbent crosslinked resin was immersed in a large amount of propylene carbonate, after 24 hours, the liquid-absorbent crosslinked resin collapsed and became a fluid liquid.
- Example 17 (Example of liquid-absorbing composition using liquid-absorbing crosslinked resin powder) Methyl vinyl ether maleic anhydride copolymer (VEMA) (weight average molecular weight 900,000; trade name V EMA) A 106 H5, Daicel Chemical Industries, Ltd.) was dissolved in methyl ethyl ketone (MEK) at 10% by weight, and the resulting solution was used as a crosslinking agent as a trifunctional isocyanate compound (Coronate HL, Nippon Polyurethane Co., Ltd.). The mixture was subjected to a cross-linking reaction at 25 ° C. for 24 hours to form a gel, thereby obtaining a liquid-absorbent cross-linked resin.
- VEMA Methyl vinyl ether maleic anhydride copolymer
- MEK methyl ethyl ketone
- the molar ratio between VEMA and the crosslinking agent was set to 1/800.
- the obtained gelled product 100 g of the absorbent cross-linked resin, was dried in a vacuum oven (80 ° C, 30 minutes), and the obtained dried product was crushed by a high-speed crusher.
- a gel powder of a liquid-absorbent crosslinked resin was obtained.
- a binder solution for mixing with the gel powder of the liquid-absorbent crosslinked resin was prepared as follows. That is, first, VEMA, which is a pinda, is dissolved in MEK at a solid content of 15%, and then ethanol is added to the solution so that the VEMA solid content becomes 10%.
- a binder solution was prepared by stirring for 3 hours in a pressure oven with a jar mill.
- the reason for adding ethanol is that if the solvent is only MEK, the gel powder of the liquid-absorbent crosslinked resin swells and becomes difficult to apply, but almost no ethanol is added. This is because they do not swell and do not lower the applicability.
- a gel powder of a liquid-absorbent crosslinked resin is mixed with the binder solution so that the solid content thereof becomes 10% or 20%, thereby obtaining a liquid-absorbent composition.
- the resulting absorbent composition Koti 1 0 0 paint E of g 2 in the polyester film Ngushi, Ri by the and this drying 1 0 minute 8 0 ° C, the liquid absorbing crosslinked resin layer
- the formed absorbent sheet was prepared.
- the liquid absorbing sheet is inclined (30 degrees) with respect to the horizontal plane, and a carbonate-based mixed solvent (ethylene carbonate Z propylene carbonate dimethyl carbonate) is added to the liquid absorbing crosslinked resin layer. 0 ml was added dropwise, and the distance that the mixed solvent traveled before absorption was measured. Table 8 shows the obtained results.
- the moving distance with respect to the polyester film without the liquid-absorbent crosslinked resin layer is 25 cm or more. The longer the moving distance, the slower the absorption speed.
- Example 18 (Electrolyte absorption test with simulated battery pack)
- the liquid-absorbent sheet 4 2 (10% gel powder solid content of the liquid-absorbent cross-linked resin) of Fig. 11 with 5 cm X thickness of 100 ⁇ is attached, and a lithium ion battery 43 is placed on top of it. This was loaded, and a glass epoxy substrate 44 was installed as a circuit board in the area adjacent to the battery (see Fig. 11).
- the non-aqueous electrolyte secondary battery constituting the non-aqueous electrolyte battery pack has an excellent liquid absorbing property with respect to the non-aqueous electrolyte.
- the present invention provides a liquid-absorbent composition and a liquid-absorbent sheet containing a liquid-absorbent crosslinked resin having the following formula:
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/519,357 US7732078B2 (en) | 2003-01-21 | 2003-12-19 | Non-aqueous electrolyte battery pack comprising a liquid-absorbent composition |
HK06106528.2A HK1086588A1 (en) | 2003-01-21 | 2006-06-07 | Liquid-absorbing composition, liquid-absorbing sheet, and nonaqueous electrolyte battery pack |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-12838 | 2003-01-21 | ||
JP2003012838A JP4352707B2 (ja) | 2003-01-21 | 2003-01-21 | 吸液性組成物、吸液性シート及び非水電解液電池パック |
Publications (1)
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WO2004065483A1 true WO2004065483A1 (ja) | 2004-08-05 |
Family
ID=32767345
Family Applications (1)
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PCT/JP2003/016331 WO2004065483A1 (ja) | 2003-01-21 | 2003-12-19 | 吸液性組成物、吸液性シート及び非水電解液電池パック |
Country Status (7)
Country | Link |
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US (1) | US7732078B2 (ja) |
JP (1) | JP4352707B2 (ja) |
KR (1) | KR20050099956A (ja) |
CN (1) | CN100422258C (ja) |
HK (1) | HK1086588A1 (ja) |
TW (1) | TW200414580A (ja) |
WO (1) | WO2004065483A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006079250A1 (en) * | 2005-01-31 | 2006-08-03 | Hua Qiao University | A super water absorbent resin-based solid polymer electrolyte, a method of preparing the same and the use thereof |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9728809B2 (en) * | 2007-01-04 | 2017-08-08 | Kabushiki Kaisha Toshiba | Nonaqueous electrolyte battery, battery pack and vehicle |
JP5144582B2 (ja) * | 2009-04-23 | 2013-02-13 | トヨタ自動車株式会社 | 蓄電装置の漏液伝達抑制構造 |
DE102009045271A1 (de) * | 2009-10-02 | 2011-04-07 | Robert Bosch Gmbh | Notfallkühleinrichtung |
JP5743276B2 (ja) * | 2011-09-26 | 2015-07-01 | Fdk株式会社 | 電池ユニット |
DE102012000593A1 (de) | 2012-01-14 | 2013-07-18 | Daimler Ag | Batterie mit einer Anzahl von seriell und/oder parallel miteinander verschalteten Einzelzellen |
EP2731164B1 (de) * | 2012-11-12 | 2017-06-28 | Samsung SDI Co., Ltd. | Batteriesystem |
KR102124054B1 (ko) * | 2012-11-14 | 2020-06-17 | 삼성전자주식회사 | 고분자, 이를 포함하는 리튬 전지용 전극 및 이를 구비한 리튬 전지 |
US20140302361A1 (en) * | 2013-04-08 | 2014-10-09 | Samsung Sdi Co., Ltd. | Rechargeable battery |
TWI524578B (zh) * | 2013-12-31 | 2016-03-01 | 原瑞電池科技股份有限公司 | 電池模組 |
CN104966848A (zh) * | 2015-06-19 | 2015-10-07 | 储盈新能源科技(上海)有限公司 | 锂离子电池用聚合物及其制备方法、锂离子电池凝胶电解质及其制备方法 |
JP6977272B2 (ja) * | 2017-02-08 | 2021-12-08 | 凸版印刷株式会社 | 蓄電装置用外装材及び蓄電装置 |
CN112599841B (zh) * | 2020-12-15 | 2022-02-22 | 厦门海辰新能源科技有限公司 | 一种存液膜及其制备方法和具有该存液膜的锂离子电池 |
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JPS5846959A (ja) * | 1981-09-12 | 1983-03-18 | 日東電工株式会社 | 貼付剤の製造方法 |
JPH04176469A (ja) * | 1990-11-13 | 1992-06-24 | Terumo Corp | 医療用テープおよびその製造方法 |
JPH09169085A (ja) * | 1995-12-20 | 1997-06-30 | Daicel Chem Ind Ltd | 積層体およびその製造方法 |
JPH09175002A (ja) * | 1995-12-28 | 1997-07-08 | Sumitomo Seika Chem Co Ltd | インクジェット記録材用樹脂組成物 |
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CA1030686A (en) | 1973-06-20 | 1978-05-02 | James R. Gross | Absorbent articles and methods for their preparation |
JPS5613501B2 (ja) | 1973-11-14 | 1981-03-28 | ||
TW454015B (en) * | 1996-10-07 | 2001-09-11 | Kuraray Co | Water resistant composition |
DE69834502T2 (de) * | 1997-02-10 | 2007-04-19 | Sumitomo Chemical Takeda Agro Co., Ltd. | Wässrige suspension einer agrochemikalie |
JP2000306559A (ja) | 1999-04-20 | 2000-11-02 | Fuji Elelctrochem Co Ltd | パック電池 |
JP2001351588A (ja) | 2000-06-02 | 2001-12-21 | Sony Corp | 電池パック |
-
2003
- 2003-01-21 JP JP2003012838A patent/JP4352707B2/ja not_active Expired - Fee Related
- 2003-12-19 WO PCT/JP2003/016331 patent/WO2004065483A1/ja active Application Filing
- 2003-12-19 US US10/519,357 patent/US7732078B2/en active Active
- 2003-12-19 KR KR1020057005583A patent/KR20050099956A/ko not_active Application Discontinuation
- 2003-12-19 CN CNB2003801090185A patent/CN100422258C/zh not_active Expired - Fee Related
- 2003-12-25 TW TW092136841A patent/TW200414580A/zh not_active IP Right Cessation
-
2006
- 2006-06-07 HK HK06106528.2A patent/HK1086588A1/xx not_active IP Right Cessation
Patent Citations (4)
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JPS5846959A (ja) * | 1981-09-12 | 1983-03-18 | 日東電工株式会社 | 貼付剤の製造方法 |
JPH04176469A (ja) * | 1990-11-13 | 1992-06-24 | Terumo Corp | 医療用テープおよびその製造方法 |
JPH09169085A (ja) * | 1995-12-20 | 1997-06-30 | Daicel Chem Ind Ltd | 積層体およびその製造方法 |
JPH09175002A (ja) * | 1995-12-28 | 1997-07-08 | Sumitomo Seika Chem Co Ltd | インクジェット記録材用樹脂組成物 |
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WO2006079250A1 (en) * | 2005-01-31 | 2006-08-03 | Hua Qiao University | A super water absorbent resin-based solid polymer electrolyte, a method of preparing the same and the use thereof |
Also Published As
Publication number | Publication date |
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US7732078B2 (en) | 2010-06-08 |
JP4352707B2 (ja) | 2009-10-28 |
CN100422258C (zh) | 2008-10-01 |
JP2004224869A (ja) | 2004-08-12 |
HK1086588A1 (en) | 2006-09-22 |
TW200414580A (en) | 2004-08-01 |
CN1738861A (zh) | 2006-02-22 |
TWI309897B (ja) | 2009-05-11 |
KR20050099956A (ko) | 2005-10-17 |
US20060022634A1 (en) | 2006-02-02 |
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