JP2016163875A5 - - Google Patents
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- JP2016163875A5 JP2016163875A5 JP2016012822A JP2016012822A JP2016163875A5 JP 2016163875 A5 JP2016163875 A5 JP 2016163875A5 JP 2016012822 A JP2016012822 A JP 2016012822A JP 2016012822 A JP2016012822 A JP 2016012822A JP 2016163875 A5 JP2016163875 A5 JP 2016163875A5
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- 238000005192 partition Methods 0.000 claims description 61
- 230000002093 peripheral Effects 0.000 claims description 23
- 239000007789 gas Substances 0.000 description 192
- 239000002344 surface layer Substances 0.000 description 40
- 229920005989 resin Polymers 0.000 description 36
- 239000011347 resin Substances 0.000 description 36
- 239000000463 material Substances 0.000 description 32
- -1 polypropylene Polymers 0.000 description 27
- 238000007789 sealing Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 239000012466 permeate Substances 0.000 description 18
- 239000004745 nonwoven fabric Substances 0.000 description 16
- 229920003002 synthetic resin Polymers 0.000 description 11
- 239000000057 synthetic resin Substances 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 8
- 239000000835 fiber Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 239000004698 Polyethylene (PE) Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 230000002209 hydrophobic Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229920000069 poly(p-phenylene sulfide) Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 239000011528 polyamide (building material) Substances 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229920005990 polystyrene resin Polymers 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 229920001225 Polyester resin Polymers 0.000 description 2
- 229920001721 Polyimide Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920002530 poly[4-(4-benzoylphenoxy)phenol] polymer Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002522 swelling Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920000962 poly(amidoamine) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Description
本発明は、水分を透過させにくくしガスを透過させやすくするガス透過フィルターに関する。The present invention relates to a gas permeation filter that makes it difficult for moisture to permeate and facilitate gas permeation.
電解液を有するコンデンサーやリチウム電池などの密閉型電気化学デバイスにあっては、電解液が外装本体外に漏れ出ないように密閉されているので、充放電サイクルを繰り返したり、高温で放置したり、短絡・過充電・逆充電などにより電解液が分解されて、その外装本体内で水素ガスや炭酸ガスなどのガスが発生し、そのガスが外装本体内に蓄積されることにより急激に内圧が上昇して、その外装本体が膨れたり、破裂したりするおそれがあるので、発生したガスが外装本体内に蓄積しすぎないようにその発生したガスを適宜外装本体外に排出するとともに液や蒸気などの水分を透過させにくくするガス透過フィルターが望まれている。In sealed electrochemical devices such as capacitors and lithium batteries that have an electrolyte, the electrolyte is sealed so that it does not leak out of the exterior body, so it can be repeatedly charged and discharged or left at high temperatures. When the electrolyte is decomposed by short circuit, overcharge, reverse charge, etc., gas such as hydrogen gas or carbon dioxide gas is generated in the exterior body, and the internal pressure is rapidly increased by accumulating the gas in the exterior body. The exterior body may bulge or rupture, and the generated gas is appropriately discharged out of the exterior body and liquid or vapor so that the generated gas does not accumulate in the exterior body. Gas permeation filters that make it difficult to permeate moisture such as are desired.
ガス透過フィルターとしては、特許文献１にて、延伸ポリプロピレンフイルムに無数の微孔を透設した有孔フイルムの片面に、ポリプロピレン樹脂による透過性樹脂膜を被着し、反対側に、部分的に付着させたバインダーを介して不織布を接着して、この不織布の通気性によってバインダーの無い部位の微孔を介して酸素や炭酸ガスなどの気体すなわちガスが透過性樹脂膜を通って流通できるようにした気体透過性フイルムが提案されている。As a gas permeation filter, in Patent Document 1, a permeable resin film made of polypropylene resin is attached to one side of a perforated film in which innumerable fine holes are perforated in a stretched polypropylene film, and partially on the opposite side. Glue the nonwoven fabric through the attached binder, and allow the gas such as oxygen and carbon dioxide gas, such as gas, to flow through the permeable resin membrane through the micropores in the part without the binder due to the air permeability of this nonwoven fabric. A gas permeable film has been proposed.
しかし、特許文献１の気体透過性フイルムからなるガス透過フィルターにあっては、透過性樹脂膜と不織布との間の微孔は液や蒸気などの水分を透過させにくくする配慮はなくガスを流通させるだけであるので、より多くガスを透過させるために有孔フイルムの孔径を大きくガス排出をさせやすくすると水分の透過も多くなるので、水分を透過させにくくし、ガス透過性のよいガス透過フィルターが望まれる。However, in the gas permeable filter made of the gas permeable film of Patent Document 1, the micropores between the permeable resin film and the non-woven fabric are not considered to make it difficult to permeate moisture such as liquid and vapor, and the gas is circulated. Therefore, if the hole diameter of the perforated film is increased to facilitate gas discharge in order to allow more gas to permeate, moisture permeation increases, making it difficult for water to permeate and a gas permeable filter with good gas permeability. Is desired.
一方、特許文献２にて、電解液に有機溶媒を用いるリチウムイオン二次電池をはじめとする非水電解質二次電池は、使用環境や長期使用により非水電解質が正極・負極で分解してガスが発生する場合があるが、ＣＯ２選択性透過膜を設けることにより、二酸化炭素を電池外部に排出して、二酸化炭素の発生による外装体の膨れ、電池内部の内圧上昇を防止するガス透過フィルターが提案されている。On the other hand, in Patent Document 2, non-aqueous electrolyte secondary batteries such as lithium ion secondary batteries that use an organic solvent as the electrolyte solution are decomposed into gases by the non-aqueous electrolyte being decomposed at the positive and negative electrodes depending on the use environment and long-term use. Gas permeation filter that discharges carbon dioxide to the outside of the battery by providing a CO 2 selective permeable membrane and prevents swelling of the outer casing due to the generation of carbon dioxide and an increase in internal pressure inside the battery Has been proposed.
しかし、特許文献２で提案されたガス透過フィルターは、ポリアミドアミン系デンドリマーを含む素材さらには防湿性を高める観点からガス透過性が高く、水分が透過しにくいポリエチレンフイルムやポリプロピレンフイルム等を積層することを例示して、この特定した素材でできたＣＯ２選択性透過膜を外装体の封口蓋の絶縁部材に形成しているので、ガス透過フィルターとしては、特定の素材に制約される。However, the gas permeation filter proposed in Patent Document 2 is made by laminating a material containing a polyamidoamine-based dendrimer and a polyethylene film or a polypropylene film which has a high gas permeability from the viewpoint of improving moisture resistance and hardly permeates moisture. Since the CO 2 selective permeable membrane made of the specified material is formed on the insulating member of the sealing lid of the exterior body, the gas permeable filter is restricted to a specific material.
本発明は、上記の問題点を解消するために、水分を透過させにくくする作用を高めガス透過性のよいガス透過フィルターを提供することを目的とする。In order to solve the above problems, an object of the present invention is to provide a gas permeation filter having an improved effect of making moisture difficult to permeate and having good gas permeability.
本発明のガス透過フィルターは、両端が開口した筒部の中空内にガス透過路となるガス透過仕切り部を設けたガス透過フィルターであって、ガス透過仕切り部よりもガス透過量が大きいガス透過表層シートをガス透過仕切り部と離間して設けることにより前記筒部の中空内でガス透過仕切り部の上下面の少なくとも一方の面に空間部を形成したガス透過フィルターにおいて、前記ガス透過仕切り部またはガス透過表層シートは微小孔を有する微小突起が複数個形成されてできていることを特徴とする。同請求項２に記載の発明は、請求項１に記載のガス透過フィルターで、前記微小突起の外周面に親水部材を形成したことを特徴とする。The gas permeation filter of the present invention is a gas permeation filter in which a gas permeation partition part serving as a gas permeation path is provided in the hollow of a cylindrical part opened at both ends, and the gas permeation amount is larger than the gas permeation partition part. In the gas permeable filter in which a space portion is formed in at least one of the upper and lower surfaces of the gas permeable partition portion in the hollow of the cylindrical portion by providing a surface layer sheet separated from the gas permeable partition portion, the gas permeable partition portion or The gas permeable surface layer sheet is characterized in that a plurality of minute projections having minute holes are formed . The invention according to claim 2 is the gas permeable filter according to claim 1, wherein a hydrophilic member is formed on the outer peripheral surface of the minute protrusion .
本発明のガス透過フィルターは、両端が開口した筒部の中空内にガス透過路となるガス透過仕切り部を設けたガス透過フィルターであって、ガス透過仕切り部よりもガス透過量が大きいガス透過表層シートをガス透過仕切り部と離間して設けることにより前記筒部の中空内でガス透過仕切り部の上下面の少なくとも一方の面に空間部を形成したガス透過フィルターであるので、前記中空内のガス透過路に設けたガス透過仕切り部とガス透過表層シートと前記空間部とによりガスを透過させる機能に水分を透過させにくくする機能をもたせ、前記ガス透過仕切り部またはガス透過表層シートは微小孔を有する微小突起が複数個形成されてできていることにより、これらの微小突起の外周面に水分を留めて微小孔から水分を透過させにくくするとともに微小孔からガスを透過させているので、ガス透過性のよい素材に制約されずに、水分を透過させにくくし、ガス透過性のよいガス透過フィルターを提供することができる。さらに、前記微小突起の外周面に親水部材を形成することにより、前記微小突起の外周面において液や水蒸気などの水分を吸着して水分を留める作用を向上させるので、水分をガス透過仕切り部またはガス透過表層シートから透過させにくくする作用が向上するなどの効果がある。The gas permeation filter of the present invention is a gas permeation filter in which a gas permeation partition part serving as a gas permeation path is provided in the hollow of a cylindrical part opened at both ends, and the gas permeation amount is larger than the gas permeation partition part. Since the surface sheet is provided separately from the gas permeable partition portion, the gas permeable filter has a space portion formed on at least one of the upper and lower surfaces of the gas permeable partition portion in the hollow portion of the cylindrical portion . The gas permeable partition portion or the gas permeable surface layer sheet provided with a gas permeable partition portion, a gas permeable surface layer sheet, and the space portion have a function of making it difficult to permeate moisture. By forming a plurality of microprotrusions having a water content, it is difficult to permeate water from the micropores by retaining water on the outer peripheral surface of these microprotrusions. Since by transmitting gas from the monitor micropores, without being constrained to the gas permeable good material, and hard to transmit moisture, it is possible to provide a gas permeable filter having gas permeability. Furthermore, by forming a hydrophilic member on the outer peripheral surface of the microprojection, the outer peripheral surface of the microprotrusion improves the action of adsorbing moisture such as liquid or water vapor and retaining the moisture. The effect of making it difficult to permeate from the gas permeable surface layer sheet is improved .
（実施形態１）
図１および図２を参照して、ガス透過フィルター１を説明する。(Embodiment 1)
The gas permeation filter 1 will be described with reference to FIGS. 1 and 2.
図１および図２において、ガス透過フィルター１は、両端が開口した中空の筒部２と不織布でできたガス透過表層シート５とガス透過仕切り部３とからなり、好ましくは、親水部材６を有する。筒部２は封口板７の貫通孔７Ａに設けられている。この封口板７の形状は矩形状を例示しているが、円板状でもよい。封口板７の素材としては、金属材、例えばアルミニウム（含む合金）、銅（含む合金）またはステンレスなどの金属材であるが、筒部２と同じ合成樹脂材でもよい。筒部２の中空内にはその内周面すなわち内周壁から平板状のガス透過仕切り部３を延出させてガス透過路を形成している。このガス透過仕切り部３の両面は筒部２の両端との間に空間部４、４１が形成されている。筒部２の中空の形状は図１においては鼓形状を示すが、円柱もしくは角柱形状や円錐もしくは角錐形状でもよい。このようにして形成された筒部２の一方の開口端面（上方の端面）にガス透過表層シート５を密着接合させて筒部２の一方の開口端（上方の開口端）が閉塞されることにより、ガス透過仕切り部３はガス透過表層シート５と空間部４を介して対面するようにされている。1 and 2, a gas permeable filter 1 includes a hollow cylindrical portion 2 having both ends opened, a gas permeable surface layer sheet 5 made of nonwoven fabric, and a gas permeable partition portion 3, and preferably has a hydrophilic member 6. . The cylinder portion 2 is provided in the through hole 7 </ b> A of the sealing plate 7 . The shape of the sealing plate 7 is a rectangular shape, but may be a disc shape. The material of the sealing plate 7 is a metal material such as aluminum (including alloy), copper (including alloy), or stainless steel, but may be the same synthetic resin material as the cylindrical portion 2. A gas permeation path is formed in the hollow of the cylindrical portion 2 by extending a flat gas permeation partition portion 3 from the inner peripheral surface, that is, the inner peripheral wall. Space portions 4 and 41 are formed between both ends of the gas permeable partition portion 3 and both ends of the cylindrical portion 2. The hollow shape of the cylindrical portion 2 shows a drum shape in FIG. 1, but may be a cylindrical shape, a prism shape, a cone shape, or a pyramid shape. The gas permeable surface layer sheet 5 is tightly bonded to one open end surface (upper end surface) of the cylindrical portion 2 formed in this way, and one open end (upper open end) of the cylindrical portion 2 is closed. Thus, the gas permeable partition part 3 faces the gas permeable surface layer sheet 5 via the space part 4.
両端が開口した中空の筒部２は合成樹脂材でできており、ガス透過仕切り部３は筒部２の中空内の内周面から延出するようにガス透過仕切り部３と一体に成形してできており、この成形時に、筒部２は封口板７の貫通孔７Ａに密着接合されるように一体に成形されている。この筒部２の形状は円筒状を例示しているが、角筒状でもよい。また、この筒部２の合成樹脂材の素材としては、ポリフェニレンサルファイド系樹脂、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、ポリアミド系樹脂、ポリカーボネート系樹脂、ポリ塩化ビニール系樹脂、ポリエチレンテレフタレート系樹脂、ポリブチレンテレフタレート系樹脂、ポリエチレンナフタレート系樹脂、ポリブチレンナフタレート系樹脂、フッ素系樹脂、ポリエーテルエーテルケトン系樹脂などの熱可塑性樹脂やフェノール系樹脂、エポキシ系樹脂、ポリイミド系樹脂、不飽和ポリエステル系樹脂などの熱硬化性樹脂などの樹脂材で、これらを組み合わせまたは他の素材を含有させてもよい。また、ガス透過仕切り部３は筒部２と同じ合成樹脂材でもよいか、金属材、例えば、アルミニウム（含む合金）、銅（含む合金）またはステンレスなどでできた平板でできていてもよい。このガス透過仕切り部３は筒部２よりもガスの透過性がよくなるように、薄肉でレーザ加工や機械加工により微小孔が１個または複数個形成されている。なお、このように微小孔を形成せずに、筒部２よりもガス透過性のよい素材でもよい。The hollow cylindrical part 2 opened at both ends is made of a synthetic resin material, and the gas permeable partition part 3 is formed integrally with the gas permeable partition part 3 so as to extend from the inner peripheral surface in the hollow of the cylindrical part 2. In this molding, the cylindrical portion 2 is integrally molded so as to be tightly joined to the through hole 7A of the sealing plate 7 . The cylindrical portion 2 has a cylindrical shape as an example, but may be a rectangular tube shape. The material of the synthetic resin material of the cylindrical portion 2 includes polyphenylene sulfide resin, polyethylene resin, polypropylene resin, polystyrene resin, polyamide resin, polycarbonate resin, polyvinyl chloride resin, polyethylene terephthalate resin. , Thermoplastic resins such as polybutylene terephthalate resin, polyethylene naphthalate resin, polybutylene naphthalate resin, fluorine resin, polyether ether ketone resin, phenol resin, epoxy resin, polyimide resin, unsaturated A resin material such as a thermosetting resin such as a polyester resin may be used in combination or other materials. Moreover, the gas permeable partition part 3 may be the same synthetic resin material as the cylinder part 2, or may be made of a metal material, for example, a flat plate made of aluminum (including alloy), copper (including alloy), stainless steel, or the like. The gas permeation partition portion 3 is thin and has one or more micro holes formed by laser processing or machining so that the gas permeability is better than that of the cylindrical portion 2. Note that a material having better gas permeability than the cylindrical portion 2 may be used without forming the micropores in this way.
筒部２の一方の開口端面（上方の端面）には、筒部２の中空内の空間部４を介して円板状または角板状の不織布でできたガス透過表層シート５が密着して設けられている。このガス透過表層シート５の不織布は繊維を積層してシート状にウェブされて、その繊維間を結合させたシートで、フェルトも含み、その繊維にまたは不織布に好ましくは親水性もしくは疎水性、撥水性、撥油性を向上させている。その繊維の素材としては、ポリフェニレンサルファイド系樹脂、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、ポリブチレンテレフタレート系樹脂、ポリアミド系樹脂などの熱可塑性樹脂の繊維である。親水性の向上としては、上記熱可塑性樹脂の繊維にアルコキシ化アルキルフェノールやポリエチレングリコールなどの界面活性剤を含有もしくは塗布することにより得られる。また、疎水性、撥水性、撥油性の向上としては、上記熱可塑性樹脂の繊維にフッ素系樹脂やシリコンを含有もしくは塗布することにより得られる。この不織布の目付はガス透過表層シート５のガス透過量が大きくなるように設定すればよい。また、このガス透過表層シート５を筒部２の開口端面に密着して設ける方法としては、熱圧着、レーザ溶着、超音波溶着やエポキシ系の接着剤を用いた接合などによる密着接合が例示できる。A gas-permeable surface layer sheet 5 made of a disk-shaped or square-plate-shaped nonwoven fabric is in close contact with one open end surface (upper end surface) of the cylindrical portion 2 through a space portion 4 in the hollow of the cylindrical portion 2. Is provided. The nonwoven fabric of the gas permeable surface layer sheet 5 is a sheet in which fibers are laminated and web-formed into a sheet shape, and the fibers are bonded to each other. The nonwoven fabric includes felt, and the fibers or the nonwoven fabric is preferably hydrophilic or hydrophobic. Improves water and oil repellency. The material of the fiber is a fiber of thermoplastic resin such as polyphenylene sulfide resin, polyethylene resin, polypropylene resin, polystyrene resin, polybutylene terephthalate resin, polyamide resin. The improvement of hydrophilicity can be obtained by containing or coating a surfactant such as alkoxylated alkylphenol or polyethylene glycol on the thermoplastic resin fiber. Further, the improvement of hydrophobicity, water repellency and oil repellency can be obtained by containing or applying a fluorine-based resin or silicon to the thermoplastic resin fiber. What is necessary is just to set the fabric weight of this nonwoven fabric so that the gas permeation amount of the gas permeable surface layer sheet 5 may become large. Further, examples of the method of providing the gas permeable surface layer sheet 5 in close contact with the opening end surface of the cylindrical portion 2 include close contact bonding such as thermocompression bonding, laser welding, ultrasonic welding, and bonding using an epoxy adhesive. .
次に、図１において、６は、ガス透過性があり親水性を向上させた繊維または不織布でできたシート状の親水部材である。この親水部材６はガス透過表層シート５とガス透過仕切り部３との間の空間部４に固着されている。すなわち、このシート状の親水部材６は筒部２の中空内の空間部４の内周面でガス透過表層シート５と離れた位置に形成された凹溝４Ａに嵌め込まれている。このように、親水部材６は空間部４に設けられているので、ガス透過表層シート５から侵入する水分を吸着させてガス透過仕切り部３に液体や蒸気などの水分を付着させにくくして、水分をガス透過仕切り部３から透過させにくくする作用を向上させている。この場合、親水部材６は１枚のシートを例示するが、層状に複数個で構成したものでもよい。Next, in FIG. 1, 6 is a sheet-like hydrophilic member made of fiber or non-woven fabric that has gas permeability and improved hydrophilicity. The hydrophilic member 6 is fixed to the space portion 4 between the gas permeable surface layer sheet 5 and the gas permeable partition portion 3. That is, the sheet-like hydrophilic member 6 is fitted in a concave groove 4 </ b> A formed at a position away from the gas permeable surface layer sheet 5 on the inner peripheral surface of the hollow space portion 4 of the cylindrical portion 2. In this way, since the hydrophilic member 6 is provided in the space portion 4, moisture entering from the gas permeable surface layer sheet 5 is adsorbed to make it difficult for moisture such as liquid and vapor to adhere to the gas permeable partition portion 3. The effect | action which makes it difficult to permeate | transmit moisture from the gas permeable partition part 3 is improved. In this case, the hydrophilic member 6 exemplifies a single sheet, but it may be composed of a plurality of layers.
（実施形態２）
図３は、実施形態２を示し、実施形態１と同様に、筒部と不織布でできたガス透過表層シートとガス透過仕切り部とからなるガス透過フィルター１１であり、以下、実施形態１と異なる部位について説明する。(Embodiment 2)
FIG. 3 shows a second embodiment, which is a gas permeable filter 11 including a gas permeable surface layer sheet and a gas permeable partition portion made of a tubular portion and a nonwoven fabric, as in the first embodiment, and is different from the first embodiment below. The part will be described.
図３において、筒部２の外形、素材および中空の形状は実施形態１と同様であり、筒部２の中空内には板状のガス透過仕切り部３が設けられている。筒部２は実施形態１と同様な封口板７の貫通孔７Ａに設けられている。この筒部２の両端とガス透過仕切り部３の両面との間には空間部４、４１が形成されており、筒部２の開口端面の一方（図３においては上方の端面）には実施形態１と同様な親水性もしくは疎水性、撥水性、撥油性のある不織布でできたガス透過表層シート５が設けられている。また、筒部２の開口端面の他方（図３においては下方の端面）にはガス透過仕切り部３に液体や蒸気などの水分を付着させにくくするように疎水性もしくは撥水性もしくは撥油性のある不織布でできたガス透過表層シート５１が設けられている。このように不織布を親水性と疎水性との特性を生かし、水分を吸着させたり、撥水させたりして、水分を透過させにくくするガス透過フィルター１１が得られる。なお、このガス透過フィルター１１においても、ガス透過表層シート５とガス透過仕切り部３との間の空間部４にシート状の親水部材６を配設してガス透過表層シート５から侵入する水分を吸着させて水分をガス透過仕切り部３から透過させにくくする作用を向上させている。In FIG. 3, the outer shape, the material, and the hollow shape of the cylindrical portion 2 are the same as those of the first embodiment, and a plate-like gas permeable partition portion 3 is provided in the hollow of the cylindrical portion 2. The cylindrical portion 2 is provided in the through hole 7A of the sealing plate 7 similar to that of the first embodiment . Space portions 4 and 41 are formed between both ends of the cylindrical portion 2 and both surfaces of the gas permeable partition portion 3, and one of the opening end surfaces of the cylindrical portion 2 (upper end surface in FIG. 3) is implemented. A gas permeable surface layer sheet 5 made of a non-woven fabric having hydrophilicity or hydrophobicity, water repellency, and oil repellency similar to the first aspect is provided. Further, a hydrophobic or water repellency or oil repellency to hard to adhere the moisture such as liquid or vapor to the gas permeable partition portion 3 (the end surface of the downward in FIG. 3) the other open end face of the cylindrical portion 2 A gas permeable surface layer sheet 51 made of a nonwoven fabric is provided. As described above, the gas permeable filter 11 that makes it difficult for moisture to permeate is obtained by making the nonwoven fabric take advantage of the characteristics of hydrophilicity and hydrophobicity to adsorb moisture or repel water. In this gas permeable filter 11 as well, a sheet-like hydrophilic member 6 is disposed in the space 4 between the gas permeable surface layer sheet 5 and the gas permeable partition portion 3 to remove moisture that enters from the gas permeable surface layer sheet 5. The effect | action which makes it hard to permeate | transmit water from the gas permeation | separation partition part 3 by making it adsorb | suck is improved.
（実施形態３）
図４は、実施形態３を示し、実施形態２と同様に、筒部とガス透過表層シートとガス透過仕切り部とからなるガス透過フィルター１１１であり、以下、実施形態２と異なる部位について説明する。(Embodiment 3)
FIG. 4 shows the third embodiment, and similarly to the second embodiment, is a gas permeable filter 111 including a cylinder portion, a gas permeable surface layer sheet, and a gas permeable partition portion. Hereinafter, portions different from the second embodiment will be described. .
図４において、筒部２の外形、素材および中空の形状は実施形態１および実施形態２と同様で、筒部２の中空内には板状のガス透過仕切り部３が設けられており、筒部２は実施形態１および実施形態２と同様な封口板７の貫通孔７Ａに設けられている。この筒部２の両端とガス透過仕切り部３の両面との間には空間部４、４１が形成されており、その開口端面の一方（図４においては上方の端面）に実施形態１および実施形態２と同様な不織布でできたガス透過表層シート５が設けられており、さらに、空間部４にはガス透過表層シート５と離間してシート状の親水部材６が設けられている。また、筒部２の他方の開口端面（図４においては下方の端面）の空間部４１には疎水性もしくは撥水性もしくは撥油性のある不織布でできたガス透過表層シート５１が筒部２の開口端面から窪んだ空間部４２が形成される位置に筒部２の中空内の内周面に密着接合されている。このように不織布を親水性と疎水性との特性を生かし、水分を吸着させたり、撥水させたりして、水分を透過させにくくするガス透過フィルター１１１が得られる。なお、このガス透過フィルター１１１においても、実施形態１および２と同様にガス透過表層シート５とガス透過仕切り部３との間の空間部４に親水部材６を配設してガス透過表層シート５から侵入する水分を吸着させて水分をガス透過仕切り部３から透過させにくくする作用を向上させている。4, the outer shape of the cylindrical portion 2, the material and the hollow shape similar to Embodiment 1 and Embodiment 2, is in the hollow of the cylindrical portion 2 is provided with a plate-like gas permeable partition portion 3, the cylinder The part 2 is provided in the through hole 7A of the sealing plate 7 similar to the first and second embodiments . Space portions 4 and 41 are formed between both ends of the cylindrical portion 2 and both surfaces of the gas permeable partition portion 3, and the first embodiment and the implementation are performed on one of the opening end surfaces (the upper end surface in FIG. 4). A gas permeable surface layer sheet 5 made of the same non-woven fabric as in Embodiment 2 is provided, and a sheet-like hydrophilic member 6 is provided in the space 4 so as to be separated from the gas permeable surface layer sheet 5. Further, a gas permeable surface layer 51 made of a hydrophobic, water-repellent or oil-repellent nonwoven fabric is provided in the space 41 on the other opening end face (lower end face in FIG. 4) of the tubular part 2. It is tightly joined to the inner peripheral surface of the hollow portion of the cylindrical portion 2 at a position where the space portion 42 recessed from the end surface is formed. Thus, the gas permeable filter 111 which makes it difficult to permeate | transmit a water | moisture content by adsorb | sucking a water | moisture content or making it water-repellent by making use of the characteristic of hydrophilic property and hydrophobicity is obtained. In this gas permeable filter 111 as well, the hydrophilic member 6 is disposed in the space 4 between the gas permeable surface sheet 5 and the gas permeable partition part 3 in the same manner as in the first and second embodiments. The effect | action which makes it difficult to permeate | transmit water from the gas permeation | separation partition part 3 by adsorb | sucking the water | moisture content which penetrate | invades from is improved.
（実施形態４）
図５は、実施形態４を示し、実施形態１と同様に、筒部とガス透過表層シートとガス透過仕切り部とからなるガス透過フィルターであり、以下、実施形態１と異なる部位について説明する。(Embodiment 4)
FIG. 5 shows a fourth embodiment, which is a gas permeable filter composed of a cylindrical portion, a gas permeable surface sheet, and a gas permeable partition portion, as in the first embodiment. Hereinafter, portions different from the first embodiment will be described.
図５において、筒部２１は封口板７と同じ部材で、この封口板７は両端が開口した貫通孔７Ａが形成されており、この貫通孔７Ａの内周面は実施形態１と同様に筒部２１の内周面に相当し封口板７が中空の筒部２１となり、貫通孔７Ａの断面形状は鼓形状を示すが、円形もしくは矩形や円錐もしくは角錐形状でもよい。この封口板７の素材は金属材、例えばアルミニウム（含む合金）、銅（含む合金）またはステンレスなどの金属材であるが、実施形態１と同様な合成樹脂材でもよい。筒部２１の中空内すなわち封口板７の貫通孔７Ａの内周面にはガス透過路となるようにガス透過仕切り部３１が設けられている。また、このガス透過仕切り部３１の形状は実施形態１から３のような板状でもよいが、円筒状または角筒状の立体形状で、そのガス透過仕切り部３１の頂面は空間部４にシート状の親水部材６と離間して対面するように、ガス透過仕切り部３１の外周面が筒部２１の内周面に圧着されて筒部２１の開口端面との間に空間部４１が形成されている。この場合、ガス透過仕切り部３１は筒部２１の内周面に圧着などで装着させずに、実施形態１で例示するように合成樹脂材で一体に成形させてもよい。このようにして筒部２１の開口端面にはガス透過表層シート５および中空内にはガス透過仕切り部３１を設けてガス透過フィルター１２が形成される。In FIG. 5, the cylinder portion 21 is the same member as the sealing plate 7, and the sealing plate 7 is formed with a through hole 7 </ b> A having both ends opened. The inner peripheral surface of the through hole 7 </ b> A is a cylinder as in the first embodiment. The sealing plate 7 corresponds to the inner peripheral surface of the portion 21 and becomes a hollow cylindrical portion 21, and the cross-sectional shape of the through hole 7A shows a drum shape, but may be circular, rectangular, conical, or pyramidal. The material of the sealing plate 7 is a metal material such as aluminum (including alloy), copper (including alloy), or stainless steel, but may be a synthetic resin material similar to that of the first embodiment. A gas permeable partition portion 31 is provided in the hollow of the cylindrical portion 21, that is, on the inner peripheral surface of the through hole 7 </ b> A of the sealing plate 7 so as to form a gas permeable path. The shape of the gas permeable partition portion 31 may be a plate shape as in the first to third embodiments. However, the gas permeable partition portion 31 is a three-dimensional shape having a cylindrical shape or a rectangular tube shape, and the top surface of the gas permeable partition portion 31 is formed in the space portion 4. A space 41 is formed between the outer peripheral surface of the gas permeable partition portion 31 and the inner peripheral surface of the cylindrical portion 21 so as to face the sheet-like hydrophilic member 6 while being separated from the sheet-like hydrophilic member 6. Has been. In this case, the gas permeable partition part 31 may be integrally formed of a synthetic resin material as illustrated in the first embodiment without being attached to the inner peripheral surface of the cylinder part 21 by pressure bonding or the like. In this way, the gas permeable filter 12 is formed by providing the gas permeable surface layer sheet 5 on the open end face of the cylindrical portion 21 and the gas permeable partition portion 31 in the hollow.
（実施形態５）
図６は、実施形態４と同様な筒部に用いる円筒状または角筒状に形成されたガス透過仕切り部３２を示す。(Embodiment 5)
FIG. 6 shows a gas permeable partition portion 32 formed in a cylindrical shape or a rectangular tube shape used for a cylindrical portion similar to that of the fourth embodiment.
図６において、円筒状または角筒状に形成されたガス透過仕切り部３２は、筒部２１の中空内すなわち封口板７の貫通孔７Ａの内周面にはガス透過路となるように設けられており、その頂面３２Ａの両面に形成された複数個の微小突起３２Ｂのそれぞれに穿孔された微小孔３２Ｃが形成されてシート材を加工してできており、その素材は、実施形態１に例示した合成樹脂材またはアルミニウムやステンレスなどの金属材が例示できる。このようにガス透過仕切り部３２は微小孔３２Ａを有する微小突起３２Ｂが複数個形成されているので、これらの微小突起３２Ｂの外周面に水分を留めて微小孔３２Ｃから水分を透過させにくくするとともに微小孔３２Ｃからガスを透過させやすくしている。なお、ガス透過仕切り部３２の形状としては、微小孔３２Ｃが形成された面が頂面となった円筒状または角筒状に加工して空間部４、４１が形成されているが、微小孔３２Ｃが形成された平板状のシート材であってもよい。また、実施形態１から３に示す筒部２の中空内に設けたガス透過仕切り部３として用いてもよい。In FIG. 6, the gas permeable partition portion 32 formed in a cylindrical shape or a rectangular tube shape is provided in the hollow portion of the cylindrical portion 21, that is, on the inner peripheral surface of the through hole 7 </ b> A of the sealing plate 7 to be a gas permeable path. and has its micropores 32C drilled in each of the plurality of microprojections 32B formed on both sides of the top surface 32A is formed are made by processing a sheet material, the material is to embodiment 1 The exemplified synthetic resin material or metal material such as aluminum or stainless steel can be exemplified . As described above, since the gas permeation partition portion 32 is formed with a plurality of microprotrusions 32B having micropores 32A, moisture is retained on the outer peripheral surface of these microprotrusions 32B to make it difficult for water to permeate from micropores 32C. Gas is easily transmitted through the minute holes 32C. In addition, as the shape of the gas permeable partition portion 32, the space portions 4 and 41 are formed by processing into a cylindrical shape or a rectangular tube shape with the surface on which the minute holes 32C are formed as a top surface. It may be a flat sheet material on which 32C is formed. Moreover, you may use as the gas permeable partition part 3 provided in the hollow of the cylinder part 2 shown to Embodiment 1-3.
（実施形態６）
図７は、実施形態５と同様な筒部２１すなわち封口板７の貫通孔７Ａにおける開口端面に用いるガス透過表層シート５２を示す。(Embodiment 6)
FIG. 7 shows a gas permeable surface layer sheet 52 used on the opening end face of the cylindrical portion 21 similar to the fifth embodiment, that is, the through hole 7A of the sealing plate 7 .
図７において、ガス透過表層シート５２は、微小孔５２Ｃが穿孔された複数個の微小突起５２Ｂが片面５２Ａに形成されたシート材であり、その素材は、実施形態１に例示した合成樹脂材またはアルミニウムやステンレスなどの金属材が例示できる。ガス透過表層シート５２の下面の空間部４には、シート状の親水部材６が配設されており、この親水部材６の下面の空間部には図示しないが、図１または図３または図４と同様にガス仕切り部３が配設されている。このガス透過表層シート５２の片面５２Ａに形成された微小突起５２Ｂの外周面に水分を留めて微小孔５２Ｃから水分を透過させにくくするとともにガスを透過させやすくしたガス透過フィルターを提供している。In FIG. 7, the gas permeable surface layer sheet 52 is a sheet material in which a plurality of minute protrusions 52 </ b> B each having a minute hole 52 </ b> C are formed on one side 52 </ b> A, and the material is the synthetic resin material exemplified in Embodiment 1 or Examples thereof include metal materials such as aluminum and stainless steel. A sheet-like hydrophilic member 6 is disposed in the space portion 4 on the lower surface of the gas permeable surface sheet 52, and although not shown in the space portion on the lower surface of the hydrophilic member 6, FIG. 1, FIG. 3 or FIG. The gas partition part 3 is arrange | positioned similarly to. A gas permeation filter is provided in which moisture is retained on the outer peripheral surface of the microprotrusions 52B formed on one side 52A of the gas permeation surface layer sheet 52 so that the water is difficult to permeate through the micro holes 52C and gas is easily permeated.
（実施形態７）
図８は、実施形態７を示し、実施形態４と同様に、筒部とガス透過表層シートとガス透過仕切り部とからなるガス透過フィルターであり、以下、実施形態４と異なる部位について説明する。(Embodiment 7)
FIG. 8 shows a seventh embodiment, which is a gas permeable filter composed of a cylindrical portion, a gas permeable surface sheet, and a gas permeable partition portion, as in the fourth embodiment. Hereinafter, portions different from the fourth embodiment will be described.
図８において、筒部２１は封口板７とその両端が開口した貫通孔７Ａとからなり、筒部２１の中空内すなわち封口板７の貫通孔７Ａの内周面にはガス透過路となるようにガス透過仕切り部３１が設けられており、筒部２１の開口端面にはガス透過表層シート５が設けられている。ガス透過仕切り部３１の上面とガス透過表層シート５の下面とで形成された空間部４にシート状の親水部材６がガス透過仕切り部３１およびガス透過表層シート５と離間して設けられている。このガス透過仕切り部３１の下面の空間部４１にはガス透過表層シート５１が離間しかつ筒部２１の開口端面と空間部４２が形成されるように設けられている。このようにしてガス透過仕切り部３１とガス透過表層シート５、５１と親水部材６からなるガス透過フィルター１３が形成される。In FIG. 8, the cylinder part 21 consists of a sealing plate 7 and through-holes 7A open at both ends, and a gas permeation path is formed in the hollow part of the cylinder part 21, that is, the inner peripheral surface of the through-hole 7A of the sealing plate 7. A gas permeable partition portion 31 is provided on the opening end surface of the cylindrical portion 21, and a gas permeable surface layer sheet 5 is provided on the opening end surface of the cylindrical portion 21. A sheet-like hydrophilic member 6 is provided separately from the gas permeable partition portion 31 and the gas permeable surface layer sheet 5 in the space portion 4 formed by the upper surface of the gas permeable partition portion 31 and the lower surface of the gas permeable surface layer sheet 5. . In the space portion 41 on the lower surface of the gas permeable partition portion 31, a gas permeable surface layer sheet 51 is provided so as to be separated and an opening end surface of the cylindrical portion 21 and a space portion 42 are formed. In this way, the gas permeable filter 13 including the gas permeable partition portion 31, the gas permeable surface layer sheets 5 and 51, and the hydrophilic member 6 is formed.
（実施形態８）
図９は、実施形態８で表面に親水部材が形成された親水部材形成ガス透過シートを示す。(Embodiment 8)
FIG. 9 shows a hydrophilic member-forming gas permeable sheet having a hydrophilic member formed on the surface in the eighth embodiment.
図９において、５３は親水部材形成ガス透過シートで、実施形態７に用いるガス透過表層シート５１と同様に上面、下面に空間部４１、４１を有するガス透過表層シートを例示しているが、実施形態１から４に示すガス透過表層シート５や実施形態６に示すガス透過表層シート５２、さらには、ガス透過仕切り部３、３１、３２であってもよい。この親水部材形成ガス透過シート５３の素材は、合成樹脂材や金属材で、合成樹脂材の素材としては、ポリフェニレンサルファイド系樹脂、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、ポリアミド系樹脂、ポリカーボネート系樹脂、ポリ塩化ビニール系樹脂、ポリエチレンテレフタレート系樹脂、ポリブチレンテレフタレート系樹脂、ポリエチレンナフタレート系樹脂、ポリブチレンナフタレート系樹脂、フッ素系樹脂、ポリエーテルエーテルケトン系樹脂などの熱可塑性樹脂やフェノール系樹脂、エポキシ系樹脂、ポリイミド系樹脂、不飽和ポリエステル系樹脂などの熱硬化性樹脂などの合成樹脂材で、これらを組み合わせまたは他の素材を含有させてもよい。また、金属材の素材としては、アルミニウム（含む合金）、銅（含む合金）またはステンレスなどが例示できる。この親水部材形成ガス透過シート５３の片面に微小突起５３Ｂが形成されており、微小突起５３Ｂには微小孔５３Ｃが形成されている。この微小突起５３Ｂの外周面には親水性被膜や親水性塗膜でできた親水部材６１が形成されている。この親水部材形成ガス透過シート５３を実施形態７に示すガス透過表層シート５１と同様なガス透過表層シート５１として用いることにより、この親水部材形成ガス透過シート５３の表面（図９においては上面）に液や水蒸気などの水分が微小孔５３Ｃを介して親水部材形成ガス透過シート５３の裏面（図９においては下面）に透過するのを微小突起５３Ｂの外周面の親水部材６１により水分を吸着して微小突起５３Ｂの外周面において液や水蒸気などの水分を留める作用を向上させ、微小孔５３Ｃから水分を透過させにくくする作用を向上させるとともにガスを透過させやすくしたガス透過フィルターを提供している。In FIG. 9, reference numeral 53 denotes a hydrophilic member-forming gas permeable sheet, which exemplifies a gas permeable surface layer sheet having space portions 41 and 41 on the upper surface and the lower surface in the same manner as the gas permeable surface layer sheet 51 used in the seventh embodiment. The gas permeable surface layer sheet 5 shown in Embodiments 1 to 4, the gas permeable surface layer sheet 52 shown in Embodiment 6, and the gas permeable partition portions 3, 31, and 32 may be used. The material of the hydrophilic member forming gas permeable sheet 53 is a synthetic resin material or a metal material. As a material of the synthetic resin material, a polyphenylene sulfide resin, a polyethylene resin, a polypropylene resin, a polystyrene resin, a polyamide resin, or a polycarbonate is used. Resins, polyvinyl chloride resins, polyethylene terephthalate resins, polybutylene terephthalate resins, polyethylene naphthalate resins, polybutylene naphthalate resins, fluorine resins, polyether ether ketone resins, and phenols A synthetic resin material such as a thermosetting resin such as an epoxy resin, an epoxy resin, a polyimide resin, or an unsaturated polyester resin may be used in combination or other materials. Examples of the metal material include aluminum (including alloy), copper (including alloy), and stainless steel. A minute protrusion 53B is formed on one surface of the hydrophilic member forming gas permeable sheet 53, and a minute hole 53C is formed in the minute protrusion 53B. A hydrophilic member 61 made of a hydrophilic coating or a hydrophilic coating is formed on the outer peripheral surface of the minute protrusion 53B. By using this hydrophilic member forming gas permeable sheet 53 as the gas permeable surface layer sheet 51 similar to the gas permeable surface layer sheet 51 shown in the seventh embodiment, the surface of the hydrophilic member forming gas permeable sheet 53 (upper surface in FIG. 9) is used. Moisture such as liquid or water vapor is transmitted through the micro holes 53C to the back surface (the lower surface in FIG. 9) of the hydrophilic member forming gas permeable sheet 53 by adsorbing the water by the hydrophilic members 61 on the outer peripheral surface of the micro projections 53B. There is provided a gas permeation filter that improves the action of retaining moisture such as liquid and water vapor on the outer peripheral surface of the microprojection 53B, improves the action of making it difficult for water to permeate from the micropore 53C, and facilitates gas permeation.
（ガス透過フィルターの利用）
図１０は、本発明のガス透過フィルターを、電極素子および電解液を有する密閉型電気化学デバイスの外装本体の一部で電極端子が設けられ、貫通孔を有する封口板に形成して、水蒸気などの水分を遮断して外装本体内に発生したガスを外装本体外に排出しやすくする密閉型電気化学デバイスへの利用例を示す。(Use of gas permeation filter)
Figure 10 is a gas permeable filter of the present invention, the electrode terminals provided we are part of the exterior body of the sealed electrochemical device having electrode elements and an electrolyte, to form a sealing plate having a through hole, water vapor An example of use in a sealed electrochemical device that cuts off moisture such as the gas generated in the exterior body and easily discharges the gas outside the exterior body will be described.
図１０において、外装本体の一部で蓋体となり、貫通孔７Ａを有する封口板７に一対の電極端子８を並設した密閉型電気化学デバイスを示し、この密閉型電気化学デバイスは電解液９を有するコンデンサーやリチウム電池などであり、封口板７が開口端のある円筒状または直方体状の箱型ケース７１を密閉して閉蓋するように接合部１００で接合された密閉型電気化学デバイスの外装本体を構成する。外装本体で密閉された内部には電極端子８の接続部８１、この接続部８１と電気的に接続されるリード８２、このリード８２と電気的に接続される電極素子部８３および電解液９が密閉されて収容されている。このように、電極素子部８３および電解液９を有するコンデンサーやリチウム電池などの密閉型電気化学デバイスにあっては、電解液９が外に漏れ出ないように密閉されているので、充放電サイクルを繰り返したり、高温で放置したり、短絡・過充電・逆充電などにより電解液９が分解されて、酸素や二酸化炭素などのガスが発生し、そのガスが蓄積されることにより急激に内圧が上昇して、その外装本体が膨れたり、破裂したりするおそれがある。そこで、封口板７にガス透過フィルター１、１１、１１１、１２を備えることにより、密閉型電気化学デバイスの外装本体である封口板７にガス透過機能をもたせて、外装本体内に発生したガスを外装本体内に蓄積しすぎないようにガスを適宜、外装本体外に排出させて、急激に内圧が上昇して外装本体が膨れたり、破裂したりすることを防止することができる。FIG. 10 shows a sealed electrochemical device in which a part of the exterior body is a lid and a pair of electrode terminals 8 are arranged side by side on a sealing plate 7 having a through-hole 7A . The sealed electrochemical device is an electrolyte solution. 9 is a closed type electrochemical device in which a sealing plate 7 is joined at a joint 100 so as to seal and close a cylindrical or cuboid box-shaped case 71 having an open end. Of the exterior body. In the inside sealed by the exterior body, a connection portion 81 of the electrode terminal 8, a lead 82 electrically connected to the connection portion 81, an electrode element portion 83 electrically connected to the lead 82, and the electrolyte 9 are provided. It is sealed and contained. Thus, in a closed electrochemical device such as a capacitor or a lithium battery having the electrode element portion 83 and the electrolytic solution 9, the electrolytic solution 9 is hermetically sealed so as not to leak out, so that the charge / discharge cycle Repeatedly, left at high temperature, or the electrolytic solution 9 is decomposed by short circuit, overcharge, reverse charge, etc., and gas such as oxygen and carbon dioxide is generated. As a result, the exterior body may bulge or rupture. Therefore, by providing the sealing plate 7 with the gas permeable filters 1, 11, 111 and 12, the sealing plate 7 which is the exterior body of the sealed electrochemical device has a gas transmission function, and the gas generated in the exterior body is reduced. The gas can be appropriately discharged outside the exterior body so that it does not accumulate too much in the exterior body, and the internal pressure can be prevented from suddenly rising and expanding or rupturing.
本発明のガス透過フィルターは、特に封口された本体内に電解液を有するコンデンサーやリチウム電池などの密閉型電気化学デバイスに適用して使用環境や長期使用により本体内で発生するガスにより本体の膨れや本体内の内圧上昇を防止するフィルターとして有用である。The gas permeable filter of the present invention is applied to a sealed electrochemical device such as a capacitor or a lithium battery having an electrolytic solution in the sealed body, and the swelling of the body due to the gas generated in the body due to the use environment or long-term use. It is useful as a filter to prevent an increase in internal pressure in the body.
１、１１、１１１、１２、１３ ガス透過フィルター
２、２１ 筒部
３、３１、３２ ガス透過仕切り部
４、４１ 空間部
５、５１、５２ ガス透過表層シート
５３ 親水部材形成ガス透過シート
６、６１ 親水部材1, 11, 111, 12, 13 Gas permeation filter 2, 21 Tube part 3, 31, 32 Gas permeation partition part 4, 41 Space part 5, 51, 52 Gas permeation surface sheet 53 Hydrophilic member forming gas permeation sheet 6, 61 Hydrophilic member
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| JP2015053996 | 2015-02-27 |
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| JPS57156006A (en) * | 1981-03-24 | 1982-09-27 | Shin Etsu Polymer Co Ltd | Gas permeable membrane |
| US5240472A (en) * | 1992-05-29 | 1993-08-31 | Air Products And Chemicls, Inc. | Moisture removal from a wet gas |
| JP6187895B2 (en) * | 2012-10-18 | 2017-08-30 | 睦月電機株式会社 | Safety valve for sealed electrochemical devices |
| JP2015041767A (en) * | 2013-08-20 | 2015-03-02 | 睦月電機株式会社 | Sealing material for sealed type electrochemical device use |
| JP6268911B2 (en) * | 2013-10-03 | 2018-01-31 | 睦月電機株式会社 | Sealing body for sealed electrochemical devices |
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