JP2000182910A - Electric double-layered capacitor and manufacture thereof - Google Patents
Electric double-layered capacitor and manufacture thereofInfo
- Publication number
- JP2000182910A JP2000182910A JP35654798A JP35654798A JP2000182910A JP 2000182910 A JP2000182910 A JP 2000182910A JP 35654798 A JP35654798 A JP 35654798A JP 35654798 A JP35654798 A JP 35654798A JP 2000182910 A JP2000182910 A JP 2000182910A
- Authority
- JP
- Japan
- Prior art keywords
- electric double
- double layer
- layer capacitor
- dielectric heating
- case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、電気二重層キャ
パシタおよび同キャパシタの製造方法に関する。The present invention relates to an electric double layer capacitor and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】 電気二重層キャパシタは、サイズも小
型化が可能で、かつ軽量であることに加えて、ニッケル
−カドミウム二次電池に比較して、その充電容量は約８
０分の１から約６０分の１と低いものの、放充電時に化
学反応を伴わないために、原理的には放充電による劣化
がなく、充電も短時間にできるという利点を有してい
る。放充電サイクルもほぼ半永久的であり、基本的には
特性劣化を示さず、使用可能温度範囲も広く、ショート
してもキャパシタそのものが破壊されることはないとい
う二次電池にない特性を有している。従って、各種電子
機器のバックアップ電池として幅広く使用されており、
また、電池、蓄電池等の代替品として、例えば、電気自
動車や、点火装置用電源としてその利用が検討されてい
るところである。2. Description of the Related Art An electric double layer capacitor can be reduced in size and weight, and has a charge capacity of about 8 times as compared with a nickel-cadmium secondary battery.
Although it is as low as 1/0 to about 1/60, it does not involve a chemical reaction at the time of discharging and charging, and thus has the advantage that in principle there is no deterioration due to discharging and charging can be performed in a short time. The discharge / charge cycle is almost semi-permanent, it basically has no characteristic degradation, has a wide usable temperature range, and has the characteristics that secondary batteries do not break even if short-circuited. ing. Therefore, it is widely used as a backup battery for various electronic devices,
In addition, as alternatives to batteries, storage batteries, and the like, for example, their use as electric vehicles and power sources for ignition devices is being studied.
【０００３】 ところで、電気二重層キャパシタは、そ
の主要素材として炭素繊維や炭素微粉を使用しているた
めに、炭素繊維や炭素微粉の製造段階のみならず、最終
製品の電気二重層キャパシタを製造するまでの各工程
で、水分や水分を吸収固定する作用を有する各種の化合
物等がその表面に吸着され、これらの物質が炭素繊維や
炭素微粉の内部に吸蔵されたまま最終製品である電気二
重層キャパシタが製造されると、様々な障害が発生す
る。勿論、電気二重層キャパシタの主要素材である炭素
繊維や炭素微粉については、使用前に、その表面を処理
する方法が提案されており、可成りの改善が認められて
いる。しかし、電気二重層キャパシタの製造工程で吸着
されるこれらの物質の除去方法としては特別な方法がな
い。僅かに、電気二重層キャパシタの最終組立工程にお
いて水分を吸着することがないように、充分に乾燥した
電気二重層キャパシタ用の分極性電極を、水分を一定の
量以下に制御し、かつ内部の雰囲気をアルゴン雰囲気下
に置換した組立室、即ち、グローブボックス内で組立、
封止する方法が採用されているのが現状である。By the way, since electric double layer capacitors use carbon fiber or carbon fine powder as a main material, not only the step of manufacturing carbon fiber or carbon fine powder but also the final electric double layer capacitor is manufactured. In each of the steps, water and various compounds that have the function of absorbing and fixing moisture are adsorbed on the surface, and these substances are occluded in carbon fibers and carbon fines. When a capacitor is manufactured, various obstacles occur. Of course, a method of treating the surface of carbon fiber or carbon fine powder which is a main material of the electric double layer capacitor before use has been proposed, and a considerable improvement has been recognized. However, there is no special method for removing these substances adsorbed in the manufacturing process of the electric double layer capacitor. Slightly dry polarizable electrodes for electric double layer capacitors should be controlled to a certain amount of water or less to prevent moisture from adsorbing in the final assembly process of the electric double layer capacitor, and Assembling in an assembly room where the atmosphere is replaced with an argon atmosphere, that is, in a glove box,
At present, a sealing method is adopted.
【０００４】 しかしながら、この方法では、組立工程
での水分吸収量を一定水準以下に制御することは可能で
あるが、各種の材料の組立前乾燥工程では完全に除去で
きずに残存している水分を電気二重層キャパシタの組立
工程に於いて完全に除去することは事実上不可能である
ことは容易に理解できるところである。ところが、この
様な状態の電気二重層キャパシタを使用すると、残存水
分が電極材料である炭素と反応して二酸化炭素ガスを発
生させて、電気二重層キャパシタのケースの内圧を上昇
させて、キャパシタの特性の低下を引き起こすという欠
点がある。However, in this method, it is possible to control the amount of water absorbed in the assembling process to a certain level or less, but it is not possible to completely remove the remaining water in the drying process before assembling various materials. It can be easily understood that it is practically impossible to completely remove the in the process of assembling the electric double layer capacitor. However, when an electric double layer capacitor in such a state is used, the remaining moisture reacts with carbon as an electrode material to generate carbon dioxide gas, thereby increasing the internal pressure of the case of the electric double layer capacitor, and There is a disadvantage that the characteristics are deteriorated.
【０００５】[0005]
【発明が解決しようとする課題】 本発明は、上記の様
な従来の方法で製造された電気二重層キャパシタを使用
するときに発生する二酸化炭素ガスの発生源を除去し、
電気二重層キャパシタのケースの内圧の上昇を完全に排
除し、使用による特性の低下を起こさない電気二重層キ
ャパシタおよびその製造方法を提供しようとするもので
ある。The present invention eliminates the source of carbon dioxide gas generated when using the electric double layer capacitor manufactured by the conventional method as described above,
An object of the present invention is to provide an electric double layer capacitor which completely eliminates an increase in the internal pressure of the case of the electric double layer capacitor and does not cause deterioration in characteristics due to use, and a method for manufacturing the same.
【０００６】[0006]
【課題を解決するための手段】 本発明者らは、上記の
課題を解決するために種々検討した結果、電気二重層キ
ャパシタの組立工程に於いて、電解液を含浸しない状態
で電気二重層キャパシタに特定の周波数の高周波電流を
印加することにより使用時に劣化の原因となる残存水分
を除去することにより上記の課題を解決できることを見
いだして、本発明を完成させたものである。さらに、本
発明に係る製造方法によれば、反復使用によっても劣化
を実質的に引き起こすことのない電気二重層キャパシタ
が提供されることを見いだして、本発明を完成させたも
のである。Means for Solving the Problems The present inventors have made various studies to solve the above-mentioned problems, and as a result, in the process of assembling the electric double layer capacitor, the electric double layer capacitor was not impregnated with the electrolytic solution. The present invention has been accomplished by finding that the above-mentioned problem can be solved by applying a high-frequency current having a specific frequency to remove residual moisture that causes deterioration during use. Further, according to the manufacturing method of the present invention, it has been found that an electric double layer capacitor that does not substantially cause deterioration even by repeated use is provided, and the present invention has been completed.
【０００７】[0007]
【発明の実施の形態】 本発明の第１の側面に係る電気
二重層キャパシタの製造方法は、電気二重層キャパシタ
の組立工程において、電気二重層キャパシタ用の各部品
を電気二重層キャパシタ用のケ−ス内に収納し、これに
電解液を加える前に、該キャパシタの端子に同キャパシ
タの特定の周波数の高周波電流を印加することにより、
例えば、分極性電極の主要素材である炭素繊維または炭
素微粉に吸蔵されている水分を加熱除去することを特徴
とする方法である。この特定の周波数の高周波電流を印
加するという操作により、誘電加熱が起こり、電気二重
層キャパシタ用の各種部品に吸着されて残存していた水
分が蒸発してくるので、これを系外に吸引、除去するこ
とにより、完成品としての電気二重層キャパシタ内に残
存する水分が実質的に零といえる水準、即ち、カールフ
ィシャー法で残存水分を測定したとき、３０ｐｐｍ以
下、好ましくは１０ｐｐｍ以下、さらに好ましくは５ｐ
ｐｍ以下の水準まで容易に除去することができる。BEST MODE FOR CARRYING OUT THE INVENTION In a method for manufacturing an electric double layer capacitor according to a first aspect of the present invention, in an electric double layer capacitor assembling step, each component for the electric double layer capacitor is replaced with a cable for the electric double layer capacitor. By applying a high-frequency current of a specific frequency of the capacitor to the terminals of the capacitor before adding the electrolytic solution to the capacitor,
For example, there is a method characterized by heating and removing water occluded in carbon fiber or carbon fine powder which is a main material of a polarizable electrode. By the operation of applying the high-frequency current of this specific frequency, dielectric heating occurs, and the water remaining adsorbed on various components for the electric double layer capacitor evaporates. By removing, the moisture remaining in the electric double layer capacitor as a finished product can be said to be substantially zero, that is, when the remaining moisture is measured by the Karl Fischer method, it is 30 ppm or less, preferably 10 ppm or less, more preferably Is 5p
pm or less.
【０００８】 本発明に係る製造方法において使用する
電気二重層キャパシタ用の部品としては、分極性電極、
セパレータ、集電電極等の通常電気二重層キャパシタ用
部品として使用されるものであれば、特に制限なく使用
可能である。即ち、本発明においては、分極性電極は、
所定の容量密度と耐電圧性を充足する限り、その製造方
法の如何に拘わらず使用できる。係る分極性電極の製造
方法は当業者の間においては公知である。しかしなが
ら、できるだけ、水分を吸収しないような条件で製造さ
れたものが好ましいことは、ことの性質上明らかであろ
う。セパレータとしては、やはり公知のものが使用で
き、例えば、ポリオレフィン系樹脂製の微孔性フィル
ム、不織布等のセルロース系多孔質材料などが使用でき
る。The components for the electric double layer capacitor used in the manufacturing method according to the present invention include a polarizable electrode,
Any material that is normally used as a component for an electric double layer capacitor, such as a separator and a collecting electrode, can be used without any particular limitation. That is, in the present invention, the polarizable electrode is
It can be used irrespective of its manufacturing method as long as it satisfies predetermined capacity density and withstand voltage. A method for producing such a polarizable electrode is known to those skilled in the art. However, it will be clear from the nature of the matter that it is preferred to be manufactured under conditions that do not absorb moisture as much as possible. Known separators can also be used as the separator, and for example, a cellulosic porous material such as a microporous film made of a polyolefin resin or a nonwoven fabric can be used.
【０００９】 集電電極としては、やはり電気二重層キ
ャパシタに使用されている公知の材質のもの、例えば、
純度が９９．８％以上の純アルミエッチド箔が使用でき
る。誘電加熱操作完了後に添加される電解液としては、
公知のもの、例えば、炭酸プロピレン、γ−ブチロラク
トン、アセトニトリル、ジメチルホルムアミド等の溶媒
に第４級アンモニウム塩、ホスフォニウム塩等の溶質を
溶解して調製したものが使用される。収納用のケースと
しては、金属製のもの、例えば、ステンレス製のものや
アルミニウム製のものや樹脂に金属箔を積層した構造を
有するラミネートフィルムが使用される。The current collecting electrode is made of a known material also used for an electric double layer capacitor, for example,
Pure aluminum etched foil having a purity of 99.8% or more can be used. As the electrolyte added after the completion of the dielectric heating operation,
Known substances, for example, those prepared by dissolving a solute such as a quaternary ammonium salt or a phosphonium salt in a solvent such as propylene carbonate, γ-butyrolactone, acetonitrile, or dimethylformamide are used. As the storage case, a metal case, for example, a stainless steel case, an aluminum case, or a laminate film having a structure in which a metal foil is laminated on a resin is used.
【００１０】 本発明に係る電気二重層キャパシタの製
造方法において、電解液を加える前に、該キャパシタの
端子を通して印加される高周波電流の周波数は、通常、
１０ＭＨｚ〜１００ＭＨｚである。１０ＭＨｚ未満で
は、各種材料、特に分極性電極を構成する炭素の表面に
吸蔵された水分を除去するに充分な温度まで加熱できな
いことがあるからである。また、１００ＭＨｚを超える
と、印可電圧を高くする必要が生じ、装置構成が困難と
なる。印加する時間は、通常、入力パワーに依存する
が、１分〜５分で充分である。所望により、同操作中に
吸引、排気したケース内の雰囲気中の水分濃度をモニタ
ーすることにより印加時間を制御することも可能であ
る。In the method for manufacturing an electric double layer capacitor according to the present invention, the frequency of the high-frequency current applied through the terminals of the capacitor before adding the electrolyte is usually
10 MHz to 100 MHz. If the frequency is less than 10 MHz, it may not be possible to heat the material to a temperature sufficient to remove moisture absorbed on the surface of various materials, particularly carbon constituting the polarizable electrode. On the other hand, when the frequency exceeds 100 MHz, it becomes necessary to increase the applied voltage, which makes the device configuration difficult. The time for application usually depends on the input power, but 1 minute to 5 minutes is sufficient. If desired, the application time can be controlled by monitoring the moisture concentration in the atmosphere in the case that has been sucked and evacuated during the same operation.
【００１１】 高周波電流を印加することにより、電気
二重層キャパシタ用の各種部品、特に分極性電極および
セパレータに吸蔵された水分を加熱、除去できる。その
際には、蒸発した水分は吸引して系外に取り除くことが
好ましい。吸引のためには、収納用ケースに吸引孔を設
けておくことが好ましい。特に、吸引用のポンプにつな
がれた吸引ホースが容易に着脱できる吸引ホース装着用
部材が該ケースから突き出た吸引孔を形成していること
が好ましい。さらに好ましくは、この突き出て形成され
ている吸引ホース装着用部材が熱可塑性樹脂製であれ
ば、印加通電作業が終了すると同時に、該吸引用部材を
加熱し溶融することにより、容易に封止することができ
る。By applying a high-frequency current, it is possible to heat and remove water absorbed in various components for an electric double layer capacitor, in particular, a polarizable electrode and a separator. In that case, it is preferable to remove the evaporated water by suctioning it out of the system. For suction, it is preferable to provide a suction hole in the storage case. In particular, it is preferable that a suction hose mounting member that allows a suction hose connected to a suction pump to be easily attached and detached has a suction hole protruding from the case. More preferably, if the projecting suction hose mounting member is made of a thermoplastic resin, the suction member is heated and melted at the same time as the application of the energizing operation, whereby the sealing is easily performed. be able to.
【００１２】 吸引は、二段階に分けて行うことが好ま
しい。誘電加熱中は、３００〜４００ｈＰａという条件
下で行うことが必要である。これ以上真空にすると、高
周波によるグロー放電が起こり好ましくない。誘電加熱
終了後の吸引は、通常１０Ｐａ以下という条件下で行う
ことが必要である。即ち、ケース内の内圧が１Ｐａ〜１
０Ｐａ程度となるように定めればよい。本発明に係る製
造方法における吸引の際に使用する装置を模式的に示せ
ば、図１に示した様になる。電気二重層キャパシタの内
圧が大気圧に比較して著しく減圧となることは電気二重
層キャパシタの寿命を短くすることがあるので好ましく
ない。場合によっては、印加通電が終了した時点でケー
ス内に乾燥空気や乾燥不活性ガス、例えば、アルゴン、
窒素ガス、二酸化炭素等を吹き込み内圧を大気圧と同程
度に調整することが好ましい。勿論、印加通電中に乾燥
空気や乾燥不活性ガスを吹き込みつつ、発生した二酸化
炭素ガスを置換、排気する方法を採用してもよい。な
お、ここで乾燥空気或いは乾燥不活性ガスとは、その中
に含まれる水分量が５ｐｐｍ以下、好ましくは１ｐｐｍ
以下のものをいう。The suction is preferably performed in two stages. During dielectric heating, it is necessary to perform the heating under the condition of 300 to 400 hPa. If the vacuum is further increased, glow discharge due to high frequency occurs, which is not preferable. The suction after the completion of the dielectric heating needs to be usually performed under the condition of 10 Pa or less. That is, the internal pressure in the case is 1 Pa to 1
What is necessary is just to set it so that it may be set to about 0 Pa. FIG. 1 schematically shows an apparatus used for suction in the manufacturing method according to the present invention. It is not preferable that the internal pressure of the electric double layer capacitor becomes significantly lower than the atmospheric pressure because the life of the electric double layer capacitor may be shortened. In some cases, at the time when the energization is completed, dry air or a dry inert gas such as argon,
It is preferable to inject nitrogen gas, carbon dioxide or the like to adjust the internal pressure to about the same as the atmospheric pressure. Of course, a method may be adopted in which the generated carbon dioxide gas is replaced and exhausted while blowing dry air or dry inert gas during application of current. Here, dry air or dry inert gas means that the amount of water contained therein is 5 ppm or less, preferably 1 ppm.
Refers to the following:
【００１３】 本発明の第２の側面である、本発明に係
る電気二重層キャパシタの製造方法により製造された電
気二重層キャパシタは、実質的に水分を含まないので、
１０，０００サイクル繰り返し充放電を繰り返しても、
静電容量の低下は５％以下で、内部抵抗の増加は１０％
以下であり、顕著な性能の劣化は認められないという優
れた特性を有している。The electric double layer capacitor manufactured by the method for manufacturing an electric double layer capacitor according to the second aspect of the present invention substantially does not contain moisture.
Even if charge and discharge are repeated for 10,000 cycles,
Capacitance reduction is less than 5%, internal resistance increase is 10%
The following is an excellent characteristic that no remarkable performance deterioration is observed.
【００１４】[0014]
【実施例】 次に、本発明を実施例を用いてさらに詳し
く説明するが、本発明はこれらの実施例に限られるもの
ではない。なお、本発明に係る電気二重層キャパシタ評
価は、以下の方法で測定した静電容量、および内部抵抗
の増減の度合いにより行った。EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The evaluation of the electric double layer capacitor according to the present invention was performed based on the capacitance measured by the following method and the degree of increase or decrease of the internal resistance.
【００１５】（静電容量の低下の測定法）被検サンプル
を定格電圧で２０分以上充電した後、所定の定電流で放
電させる。放電開始直後の電圧降下した時点ｔ1での電
圧Ｖ1から放電終止電圧Ｖ2に至るまでの時間ｔ2までの
放電電力の積分値(Measurement Method of Capacitance Reduction) A test sample is charged at a rated voltage for 20 minutes or more, and then discharged at a predetermined constant current. Integrated value of discharging power from voltages V 1 at time t 1 which is the voltage drop immediately after discharge start up time t 2 until reaching the discharge termination voltage V 2
【００１６】[0016]
【数１】 (Equation 1)
【００１７】[0017]
【数２】 により求める。(Equation 2) Ask by
【００１８】（内部抵抗の増加の測定法）被検サンプル
を定格電圧で２０分以上充電した後、所定の定電流で放
電させる。放電開始直後の電圧降下量（Ｖ0−Ｖ1）と放
電電流Ｉから内部抵抗値Ｒを下式 Ｒ＝（Ｖ0−Ｖ1）／Ｉ により求める。(Measurement Method of Increase in Internal Resistance) A test sample is charged at a rated voltage for 20 minutes or more, and then discharged at a predetermined constant current. From the voltage drop (V 0 -V 1 ) immediately after the start of discharge and the discharge current I, the internal resistance value R is determined by the following equation: R = (V 0 -V 1 ) / I.
【００１９】（実施例１）水蒸気賦活活性炭を使用して
製造した２００ｐｐｍの水分を残存水分として含んだ分
極性電極と、セパレータ、および集電電極を使用し、常
法に従いポリプロピレン製の吸引用部材を取り付けたケ
ース内に収納し、電解液添加前に、図１に模式的に示し
た装置を用い、前記吸引用部材から吸引しつつ、内圧を
４００ｈＰａとし、周波数４０ＭＨｚの高周波電流を３
分間印加し、誘電加熱現象を起こさせ、残存水分を蒸散
させた。さらに、この蒸散した水分を誘電加熱終了後も
内圧を１０Ｐａ以下として系外に吸引、除去することに
より実質的に残存水分を含まない電気二重層キャパシタ
を製造した。なお、印加終了後、厳密な水分制御の下に
電解液を添加し電気二重層キャパシタを組立て、その後
吸引用部材を加熱溶融すると共に、ケースを常法に従い
封止した。このものを用いて充放電を１０，０００サイ
クル繰り返したが静電容量の低下は５％以内で、内部抵
抗の増加は１０％以内であり顕著な特性劣化は認められ
なかった。Example 1 A suction member made of polypropylene according to a conventional method using a polarizable electrode produced using steam activated carbon and containing 200 ppm of water as residual water, a separator and a current collecting electrode. Before the addition of the electrolytic solution, the internal pressure is set to 400 hPa and the high-frequency current having a frequency of 40 MHz is applied to the device by using the device schematically shown in FIG.
For a minute to cause a dielectric heating phenomenon to evaporate residual moisture. Further, the evaporated water was suctioned and removed from the system at an internal pressure of 10 Pa or less even after completion of the dielectric heating, thereby producing an electric double layer capacitor substantially free of residual moisture. After the application was completed, an electrolytic solution was added under strict water control to assemble an electric double layer capacitor. Thereafter, the suction member was heated and melted, and the case was sealed in a usual manner. The charge / discharge cycle was repeated 10,000 times using this material. The decrease in the capacitance was within 5%, and the increase in the internal resistance was within 10%.
【００２０】（実施例２）水蒸気賦活活性炭に代えてカ
リウム賦活活性炭を用いた残存水分量が１００ｐｐｍの
水分を含む分極性電極を使用したこと以外は、実施例１
と同様の操作により、電気二重層キャパシタを製造し
た。得られたキャパシタは充放電を１０，０００サイク
ル繰り返したが、静電容量の低下は５％以内で、内部抵
抗の増加は１０％以内であり、特に顕著な特性劣化は認
められなかった。Example 2 Example 1 was repeated except that a polarizable electrode containing 100 ppm of residual water was used instead of steam-activated activated carbon using potassium-activated activated carbon.
An electric double layer capacitor was manufactured in the same manner as in the above. The obtained capacitor was repeatedly charged and discharged for 10,000 cycles. The decrease in capacitance was within 5%, and the increase in internal resistance was within 10%. No remarkable deterioration of characteristics was observed.
【００２１】（比較例１）印加通電および吸引をしなか
った以外は、実施例１と同様にして電気二重層キャパシ
タを製造した。得られた電気二重層キャパシタは１０，
０００サイクルの充放電を繰り返したところ、静電容量
の低下は１５％で、内部抵抗の増加は２５％であり、特
性の著しい著しい低下が認められた。(Comparative Example 1) An electric double layer capacitor was manufactured in the same manner as in Example 1 except that no current was applied and suction was not performed. The obtained electric double layer capacitor is 10,
When 000 cycles of charge and discharge were repeated, the decrease in capacitance was 15% and the increase in internal resistance was 25%, indicating a remarkable decrease in characteristics.
【００２２】[0022]
【発明の効果】 電気二重層キャパシタの組立工程に於
いて電気二重層キャパシタ用の各種部品をケースに収納
し、電解液を加え、電気二重層キャパシタを封止する前
に特定の周波数の高周波電流を印加して使用時に劣化の
原因となる残存水分を加熱、除去することにより長時間
使用しても実質的に劣化のない電気二重層キャパシタが
得られる。また、収納用のケ−スに突き出て取り付けら
れた熱可塑性樹脂製の吸引用部材を印加通電作業の終了
と同時に、加熱、溶融することにより、容易に封止する
ことができるという効果が得られる。[Effects of the Invention] In the electric double layer capacitor assembling process, various parts for the electric double layer capacitor are housed in a case, an electrolytic solution is added, and a high frequency current of a specific frequency is sealed before the electric double layer capacitor is sealed. Is applied to heat and remove residual moisture that causes deterioration during use, whereby an electric double layer capacitor that does not substantially deteriorate even when used for a long time can be obtained. In addition, the thermoplastic resin suction member protruding and attached to the storage case can be easily sealed by heating and melting at the same time as the end of the energizing operation. Can be
【図１】 本発明に係る製造方法に使用する装置の概要
図である。FIG. 1 is a schematic view of an apparatus used for a manufacturing method according to the present invention.
１…電気二重層キャパシタ、２…吸引孔、３…高周波印
加用装置、４…吸引用ポンプ、５…吸引用ホース。DESCRIPTION OF SYMBOLS 1 ... Electric double layer capacitor, 2 ... Suction hole, 3 ... High frequency application device, 4 ... Suction pump, 5 ... Suction hose.
Claims (8)
層し、この積層体の集電電極から引き出された端子に高
周波電流を印加し誘電加熱し、遊離してきた水分を吸引
することにより電気二重層キャパシタから水分を除去す
る工程を含むことを特徴とする電気二重層キャパシタの
製造方法。An electrode is obtained by laminating a polarizable electrode, a separator, and a current collecting electrode, applying a high-frequency current to a terminal drawn from the current collecting electrode of the laminated body, performing dielectric heating, and sucking released moisture. A method for manufacturing an electric double layer capacitor, comprising a step of removing moisture from the double layer capacitor.
後に行うことを特徴とする請求項１に記載の製造方法。2. The method according to claim 1, wherein the dielectric heating is performed after the laminate is housed in a case.
引を誘電加熱操作中は３００〜４００ｈＰａ、誘電加熱
終了後は１０Ｐａ以下で行うことを特徴とする請求項１
または２に記載の製造方法。3. The method according to claim 1, wherein the suction of moisture released by the dielectric heating is performed at 300 to 400 hPa during the dielectric heating operation and at 10 Pa or less after the dielectric heating is completed.
Or the production method according to 2.
引をケースの一端に設けられた吸引孔を介して行うこと
を特徴とする請求項１〜３のいずれか１項に記載の製造
方法。4. The method according to claim 1, wherein the suction of the water released by the dielectric heating is performed through a suction hole provided at one end of the case.
ＭＨｚの高周波電流を印加して行うことを特徴とする請
求項１〜４のいずれか１項に記載の製造方法。5. The method of claim 1, wherein the dielectric heating is performed at a frequency of 10 MHz to 100 MHz.
The method according to claim 1, wherein the method is performed by applying a high-frequency current of MHz.
可塑性樹脂により形成されていることを特徴とする請求
項４に記載の製造方法。6. The method according to claim 4, wherein said suction holes are formed of a thermoplastic resin which can be sealed by heating.
よび電解液と、上記材料を収納したケースとからなり、
ケース内には実質的に水分を含まず、かつ、請求項１〜
６のいずれか１項に記載の方法により製造されたことを
特徴とする電気二重層キャパシタ。7. A polarizing electrode, a separator, a collecting electrode, and an electrolytic solution, and a case containing the above material,
The case does not substantially contain water, and claims 1 to
An electric double layer capacitor manufactured by the method according to any one of claims 6 to 10.
止できる熱可塑性樹脂により形成されている吸引用の孔
が加熱により封止されていることを特徴とする請求項７
に記載の電気二重層キャパシタ。8. The suction hole provided in the case, which is formed of a thermoplastic resin which can be sealed by heating, is sealed by heating.
3. The electric double layer capacitor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35654798A JP2000182910A (en) | 1998-12-15 | 1998-12-15 | Electric double-layered capacitor and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35654798A JP2000182910A (en) | 1998-12-15 | 1998-12-15 | Electric double-layered capacitor and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000182910A true JP2000182910A (en) | 2000-06-30 |
Family
ID=18449580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35654798A Withdrawn JP2000182910A (en) | 1998-12-15 | 1998-12-15 | Electric double-layered capacitor and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000182910A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010109355A (en) * | 2008-09-30 | 2010-05-13 | Nippon Chemicon Corp | Electrical double-layer capacitor |
| JP2020115581A (en) * | 2011-07-08 | 2020-07-30 | ファーストキャップ・システムズ・コーポレイションＦａｓｔＣＡＰ ＳＹＳＴＥＭＳ Ｃｏｒｐｏｒａｔｉｏｎ | High temperature energy storage device |
| US11250995B2 (en) | 2011-07-08 | 2022-02-15 | Fastcap Systems Corporation | Advanced electrolyte systems and their use in energy storage devices |
-
1998
- 1998-12-15 JP JP35654798A patent/JP2000182910A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010109355A (en) * | 2008-09-30 | 2010-05-13 | Nippon Chemicon Corp | Electrical double-layer capacitor |
| JP2020115581A (en) * | 2011-07-08 | 2020-07-30 | ファーストキャップ・システムズ・コーポレイションＦａｓｔＣＡＰ ＳＹＳＴＥＭＳ Ｃｏｒｐｏｒａｔｉｏｎ | High temperature energy storage device |
| US11250995B2 (en) | 2011-07-08 | 2022-02-15 | Fastcap Systems Corporation | Advanced electrolyte systems and their use in energy storage devices |
| US11482384B2 (en) | 2011-07-08 | 2022-10-25 | Fastcap Systems Corporation | High temperature energy storage device |
| US11776765B2 (en) | 2011-07-08 | 2023-10-03 | Fastcap Systems Corporation | Advanced electrolyte systems and their use in energy storage devices |
| US11901123B2 (en) | 2011-07-08 | 2024-02-13 | Fastcap Systems Corporation | High temperature energy storage device |
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