CN1971785A - Electrolytic capacitor - Google Patents
Electrolytic capacitor Download PDFInfo
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- CN1971785A CN1971785A CN 200610162414 CN200610162414A CN1971785A CN 1971785 A CN1971785 A CN 1971785A CN 200610162414 CN200610162414 CN 200610162414 CN 200610162414 A CN200610162414 A CN 200610162414A CN 1971785 A CN1971785 A CN 1971785A
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Abstract
The electrolytic capacitor includes two chemically processed anode foils, two cathode foils, four separator sheets, four lead tab terminals, two anode leads and two cathode leads. The two chemically processed anode foils, two cathode foils and four separator sheets are arranged alternately and rolled, to form a capacitor element. Two lead tab terminals are connected to the two chemically processed anode foils, respectively, and the remaining two lead tab terminals are connected to two cathode foils, respectively. The two anode leads are connected to two lead tab terminals, respectively, and the two cathode leads are connected to two lead tab terminals, respectively. As a result, equivalent series resistance can stably be reduced.
Description
Technical field
The present invention relates to a kind of electrolytic capacitor that can reduce equivalent serial resistance.
Background technology
In recent years, produced the miniaturization of circuit and the requirement of correspondingization of high frequency, capacitor also needs Low ESRization thereupon.Particularly the CPU (Central Processing Unit) for computer drives with circuit and switching power circuit etc., on circuit design, require absorbability, require a kind of capacitor that can hang down ESR (equivalent serial resistance) change high-frequency noise and pulsating current.
The stereogram that Figure 27 constitutes for the aluminium wound form solid electrolytic capacitor before the expression.With reference to Figure 27, former aluminium wound form solid electrolytic capacitor 100 has the paper tinsel of being anodizing to 110, Cathode Foil 120, isolation (separator) paper 130, only strip winding 140, lead-in wire (lead) are extracted (tab) terminal 160,170, anode tap 180 and cathode leg 190 out.
Be anodizing to paper tinsel 110, Cathode Foil 120 and barrier paper 130, twine in that barrier paper 130 is arranged under the state that is anodizing between paper tinsel 110 and the Cathode Foil 120.Afterwards, end the end that is anodizing to paper tinsel 110, Cathode Foil 120 and barrier paper 130 that strip winding 140 permanent domiciles twine.Consequently form capacity cell 150.
It is outstanding from the end face of capacity cell 150 that lead-in wire is extracted terminal 160 out, and is anodizing to paper tinsel 110 and is connected, and it is outstanding from the end face of capacity cell 150 that lead-in wire is extracted terminal 170 out, is connected with Cathode Foil 120.Anode tap 180 is extracted terminal 160 out with lead-in wire and is connected, and cathode leg 190 is extracted terminal 170 out with lead-in wire and is connected.
In the past, reduce the method for equivalent serial resistance, known have and will be anodizing to paper tinsel and Cathode Foil be connected with 2 lead-in wires respectively (patent documentation 1).Figure 28 is 2 anode taps of expression and the figure that is anodizing to the method for attachment of paper tinsel.With reference to Figure 28,2 lead-in wires extract out terminal 160a, 160b with given interval be anodizing to paper tinsel 110 and be connected.In addition, 2 anode tap 180a, 180b are connected with lead-in wire extraction terminal 160a, 160b respectively.
2 cathode legs, by with 2 anode tap 180a, 180b be anodizing to the identical state of state that paper tinsel 110 is connected, connect Cathode Foil 120.
Figure 29 is 2 anode taps of expression and another figure that is anodizing to the method for attachment of paper tinsel.With reference to Figure 29, lead-in wire is extracted terminal 160c out and is anodizing to paper tinsel 110 and is connected, and 2 anode tap 180a, 180b are connected with given interval and lead-in wire extraction terminal 160c.2 cathode legs, with 2 anode tap 180a, 180b be anodizing to the identical state of state that paper tinsel 110 is connected, connect Cathode Foil 120.
Aluminium wound form solid electrolytic capacitor in the past can be reduced to equivalent serial resistance 2.0m Ω degree.
Be known by being anodizing to paper tinsel and the Cathode Foil method that fetches the reduction equivalent serial resistance that links to each other with 2 lead-in wires respectively like this.
But, in the reduction method of equivalent serial resistance in the past, since with a plurality of anode taps be anodizing to paper tinsel and be connected, a plurality of cathode legs are connected with Cathode Foil, therefore be difficult to make a plurality of anode taps to fix with being anodizing to link position between the paper tinsel and the link position between a plurality of cathode leg and the Cathode Foil, and the making aluminium electrolytic capacitor.
Consequently, exist very difficult stably the making to have this problem of aluminium electrolytic capacitor of low ESR.Also be, because anode tap and be anodizing to link position between the paper tinsel and the link position between cathode leg and the Cathode Foil makes equivalent serial resistance change (patent documentation 2), be difficult to each time all with a plurality of anode taps and a plurality of cathode leg respectively be anodizing to paper tinsel and the cathode oxidation paper tinsel is connected in same position, and the aluminium electrolytic capacitor made from equivalent serial resistance much at one.
Patent documentation 1: the spy opens the 2004-179621 communique
Patent documentation 2: the spy opens the 2005-203402 communique
Summary of the invention
Therefore, the present invention is in order to address the above problem, and purpose is to provide a kind of electrolytic capacitor that can the steady decrease equivalent serial resistance.
According to the present invention, electrolytic capacitor is a kind of electrolytical wound form electrolytic capacitor that contains, it is characterized in that having: i (i is the integer more than 2) opens anode component and j (j is for satisfying the integer of 1≤j＜i) opens cathode assembly and k (k is the integer more than 2) opens isolated part.I opens the mutual electric insulation of anode component, and the surface has dielectric (Lure Electricity body respectively) overlay film.J opens cathode assembly and opens anode component with i and twine.K opens isolated part and is arranged at least that i opens anode component and j opens between the cathode assembly, opens anode component and j with i and opens cathode assembly and twine.
In addition, according to the present invention, electrolytic capacitor is a kind of electrolytical wound form electrolytic capacitor that contains, and it is characterized in that having: i (i is the integer more than 2) opens anode component and i opens cathode assembly and k (k is the integer more than 2) opens isolated part.I opens the mutual electric insulation of anode component, and the surface has dielectric coating film respectively.I opens cathode assembly and opens anode component with i and twine.I opens isolated part and is separately positioned between the adjacent anode component and cathode assembly, opens anode component and i with i and opens cathode assembly and twine.Diameter when i opens anode component, i and opens cathode assembly and k and open isolated part and wind up, the diameter of the benchmark electrolytic capacitor that winds up through 1 or 2 barrier papers with 1 anode component and 1 cathode assembly about equally.
As optimal way, i opens anode component, i opens cathode assembly and k opens isolated part, opens cathode assembly and 2n or 2n-by n (n is the integer more than 2) anode component, n respectively and opens the isolated part formation.In addition, anode component, cathode assembly and isolated part have the length of summary/n of the length of anode component, cathode assembly and isolated part in the reference capacitor respectively.
As optimal way, the diameter when i opens anode component, j and opens cathode assembly and k and open isolated part and wind up, the diameter of the benchmark electrolytic capacitor that winds up through 1 or 2 barrier papers with 1 anode component and 1 cathode assembly is about equally.
As optimal way, n opens anode component, n opens cathode assembly and 2n or 2n-1 and opens the capacity cell that isolated part is entwined, and is made of n the capacitor that is provided with on the diverse location diametrically.
As optimal way, i opens anode component and j opens cathode assembly, opens an anode component and m (m is for satisfying the integer of a 1≤m＜n) cathode assembly formation by n (n is the integer more than 2) respectively; Anode component has the length of summary 1/n of the length of the anode component in the benchmark electrolytic capacitor; Cathode assembly has the length of summary 1/m of the length of the cathode assembly in the benchmark electrolytic capacitor.
As optimal way, n opens anode component, m opens cathode assembly and k opens the capacity cell that isolated part is entwined, and is made of n the capacitor that is provided with on the diverse location diametrically.
As optimal way, m opens cathode assembly and is made of 1 cathode assembly.
As optimal way, i opens anode component, j opens cathode assembly and k opens isolated part, the mutually different a plurality of capacitors of formation capacity.
As optimal way, electrolytic capacitor also has seal member.Seal member to i open anode component, i opens or j opens cathode assembly and k and opens the capacity cell that isolated part is entwined and seal.In addition, seal member is made of resin.
As optimal way, electrolytic capacitor also has seal member.Seal member to i open anode component, i opens or j opens cathode assembly and k and opens the capacity cell that isolated part is entwined and seal.Seal member is made of rubber.
As optimal way, also have i anode tap, a j cathode leg, anode electrode and cathode electrode.I anode tap, corresponding i opens the anode component setting, is connected with the summary central portion of corresponding anode component on the length direction of the anode component of correspondence respectively.I cathode leg, corresponding i opens or j opens the cathode assembly setting, is connected with the summary central portion of corresponding cathode assembly on the length direction of the cathode assembly of correspondence respectively.Anode terminal is connected with i anode tap.Cathode terminal is connected with i cathode leg.In addition, i anode tap, itself and the opposing party end that i opens the square end portion opposition side that anode component is connected are connected with anode terminal; I cathode leg, itself and the opposing party end that j opens the square end portion opposition side that cathode assembly is connected are connected with cathode terminal.
As optimal way, electrolyte is the electroconductive polymer of polythiophene class, polypyrrole class and polyaniline compound, or 7,7,8,8-four cyano quinone bismethane (the テ ト ラ シ ァ ノ キ ノ ジ メ Application) solid electrolyte that complex constituted.
In the electrolytic capacitor of the present invention, a plurality of anode components and at least 1 cathode assembly are provided with alternately, twine and constitute through isolated part.In addition, electrolytic capacitor has the effect when a plurality of capacity cells are together in parallel.Also promptly, electrolytic capacitor have a plurality of capacity cells condenser capacity separately and, and equivalent serial resistance is reduced to number/one's of a plurality of capacity cells degree.
Therefore, can reduce the equivalent serial resistance of electrolytic capacitor by the present invention.
Description of drawings
Fig. 1 is the stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.
Fig. 2 is the profile of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.
Fig. 3 is for seeing the plane graph of electrolytic capacitor from A direction shown in Figure 2.
Fig. 4 is used for describing in detail the plane graph that is anodizing to paper tinsel and lead-in wire extraction terminal.
Fig. 5 is 2 stereograms that are anodizing to the collocation method of paper tinsel, 2 Cathode Foil and 4 barrier papers of expression.
Fig. 6 is anodizing to the figure of the winding method of paper tinsel, Cathode Foil and barrier paper for expression.
Fig. 7 is anodizing to another figure of the winding method of paper tinsel, Cathode Foil and barrier paper for expression.
Fig. 8 is another stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.
Fig. 9 is the plane graph of the barrier paper shown in Fig. 8.
The stereogram of the collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 10 makes electrolytic capacitor shown in Figure 8 for expression.
Figure 11 is another stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.
Figure 12 is the plane graph that is anodizing to paper tinsel and Cathode Foil.
Figure 13 is the stereogram of the structure of the electrolytic capacitor of expression execution mode 2.
Figure 14 is the plane graph of the Cathode Foil shown in Figure 13.
The stereogram of the collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 15 makes electrolytic capacitor shown in Figure 13 for expression.
The stereogram of another collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 16 uses 2 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor shown in Figure 13 for expression.
The stereogram of another collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 17 uses 2 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor shown in Figure 13 for expression.
Figure 18 is another stereogram of the formation of the electrolytic capacitor of expression execution mode 2.
Figure 19 is for constituting the plane graph that is anodizing to paper tinsel, Cathode Foil and barrier paper of the electrolytic capacitor shown in Figure 18.
The stereogram of the collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 20 makes electrolytic capacitor shown in Figure 180 for expression.
The stereogram of another collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 21 uses 3 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor shown in Figure 180 for expression.
The stereogram of another collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 22 uses 3 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor shown in Figure 180 for expression.
Figure 23 is another stereogram of the structure of the electrolytic capacitor of expression execution mode 2.
Figure 24 is for constituting the plane graph that is anodizing to paper tinsel, Cathode Foil and barrier paper of the electrolytic capacitor shown in Figure 23.
The stereogram of the collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 25 makes electrolytic capacitor shown in Figure 23 for expression.
The stereogram of another collocation method that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 26 uses 3 to be anodizing to paper tinsel and 2 Cathode Foil making electrolytic capacitor shown in Figure 23 for expression.
Figure 27 is the stereogram of the structure of the aluminium wound form solid electrolytic capacitor before the expression.
Figure 28 is 2 anode taps of expression and the figure that is anodizing to the method for attachment between the paper tinsel.
Figure 29 is 2 anode taps of expression and another figure that is anodizing to the method for attachment between the paper tinsel.
Among the figure: 1,1a, 1b, 21a, 21b, 24a～24c, 110-is anodizing to paper tinsel, 1A-twines top, 2,2a, 2b, 22a, 22b, 23, the 120-Cathode Foil, 3,3a～3i, the 130-barrier paper, 4,140-ends strip winding, 5,5a～5g, the 150-capacity cell, 6～9,15,17,160,160a, 160b, 160c, the 170-lead-in wire is extracted terminal out, 10,10A, 10B, 20,20A, the 20B-electrolytic capacitor, 11,12,16,180,180a, the 180b-anode tap, 13,14,18, the 190-cathode leg, the 15-shell, 16-gum filler, 17-seat board, 17A～17D-notch, the 18-anode terminal, 19-cathode terminal, 100-aluminium wound form solid electrolytic capacitor.
Embodiment
The contrast accompanying drawing is elaborated to embodiments of the present invention.In addition, give part mark prosign, no longer repeat specification identical or suitable among the figure.
[execution mode 1]
Fig. 1 is the stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.In addition, Fig. 2 is the profile of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.With reference to Fig. 1 and Fig. 2, the electrolytic capacitor 10 of embodiments of the present invention 1 has the paper tinsel of being anodizing to 1, Cathode Foil 2, barrier paper 3, ends strip winding 4, goes between and extract terminal 6～9, anode tap 11,12, cathode leg 13,14, shell 15, gum filler 16 and seat board 17 out.
In addition, electrolytic capacitor 10 for example is the electrolytic capacitor that includes solid electrolyte.
Being anodizing to paper tinsel 1 is anodizing to paper tinsel 1a, 1b by 2 and constitutes.In addition, 2 anode Cathode Foil 1a, 1b are made of the aluminium foil that synthetic processing has been implemented on the surface respectively.Therefore, 2 are anodizing to each of paper tinsel 1a, 1b, and its surface is by concavo-convexization, and convex-concave surface has protective oxide layer.
In the capacity cell 5, be anodizing to paper tinsel 1a, barrier paper 3b and Cathode Foil 2a and constitute 1 capacity cell 5a, be anodizing to paper tinsel 1b, barrier paper 3d and Cathode Foil 2b and constitute 1 capacity cell 5b.
Lead-in wire is extracted terminal 6 out and is anodizing to paper tinsel 1a and is connected, lead-in wire extraction terminal 7 be anodizing to paper tinsel 1b and be connected.In addition, lead-in wire is extracted terminal 8 out and is connected with Cathode Foil 2a, and lead-in wire is extracted terminal 9 out and is connected with Cathode Foil 2b.
Fig. 3 sees the plane graph of electrolytic capacitor 10 for expression A direction shown in Figure 2.With reference to Fig. 3, seat board 17 has slightly rectangular flat shape, has notch 17A～17D.In addition, the direction bending in the face of seat board 17 respectively of anode tap 11,12 and cathode leg 13,14, thereby with the notch 17A～17D tabling of seat board 17.
Like this, 11,12 and 2 cathode legs of 2 anode taps 13,14 of bending are used as the terminal of electrolytic capacitor 10.Therefore, electrolytic capacitor 10 is the electrolytic capacitors with 4 terminal constructions.
Fig. 4 is used for describing in detail the plane graph that is anodizing to paper tinsel 1a and lead-in wire extraction terminal 6.With reference to Fig. 4, the flat shape that is anodizing to paper tinsel 1a is a rectangle, half length L of the length 2L that is anodizing to paper tinsel 110 before having, and with the former identical width W of paper tinsel 110 that is anodizing to.
In addition, lead-in wire is extracted out on the position that terminal 6 is L/2 at the winding top 1A that distance is anodizing to paper tinsel 1a and is anodizing to paper tinsel 1a and is connected.Like this, lead-in wire extraction terminal 6 is connected with the central portion that is anodizing to paper tinsel 1a on the length direction that is anodizing to paper tinsel 1a.
Being anodizing to paper tinsel 1b and Cathode Foil 2a, 2b has respectively and is anodizing to identical length L of paper tinsel 1a and width W.In addition, lead-in wire extraction terminal 7～9 is connected with the central portion that is anodizing to paper tinsel 1b and Cathode Foil 2a, 2b respectively.
(3a～3d) has than being anodizing to the long length of paper tinsel 1 and Cathode Foil 2 and than being anodizing to the wide width of paper tinsel 1 and Cathode Foil 2 barrier paper 3.This is in order to prevent to be anodizing to paper tinsel 1 and Cathode Foil 2 short circuits.
As mentioned above, owing to be anodizing to paper tinsel 1 and Cathode Foil 2, half length L of the length 2L that is anodizing to paper tinsel 110 before having, and with the former identical width W of paper tinsel 110 that is anodizing to, therefore be anodizing to paper tinsel 1 and Cathode Foil 2 area S separately and be half of the former area S0 that is anodizing to paper tinsel 110.Consequently, capacitor 5a, 5b capacity C separately is anodizing to half of capacity C 0 of the capacity cell of paper tinsel 110 for use.
But, capacity cell 5 as described later, has the identical effect that is together in parallel with two capacity cell 5a, the 5b that will have capacity C, therefore its capacity become 2C (=C0), with 1 to be anodizing to the be situated between capacity C 0 of the former aluminium wound form solid electrolytic capacitor 100 that is entwined by 1 barrier paper 130 of paper tinsel 110 and 1 Cathode Foil 120 identical.
So, electrolytic capacitor 10, though use the paper tinsel 1 that is anodizing to of half length that is anodizing to paper tinsel 110 before having to make with Cathode Foil 2, its capacity can be not lower than the capacity of former aluminium wound form solid electrolytic capacitor 100 yet.
In addition, because electrolytic capacitor 10 uses the paper tinsel 1 that is anodizing to of half length that is anodizing to paper tinsel 110 before having to wind up making with Cathode Foil 2, the diameter of diameter after therefore twining and former aluminium wound form solid electrolytic capacitor 100 about equally.Promptly, can produce electrolytic capacitor, its size can be greater than former aluminium wound form solid electrolytic capacitor 100, and the maintenance capacity yet.
Manufacture method to electrolytic capacitor 10 describes.Fig. 5 is 2 stereograms that are anodizing to the collocation method of paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d of expression.In addition, Fig. 6 is anodizing to the figure of the winding method of paper tinsel 1a, 1b, Cathode Foil 2a, 2b and barrier paper 3a～3d for expression.At first, etch processes is implemented on the surface with large-sized 1 aluminium foil, synthesized processing afterwards.Afterwards, will carry out the synthetic aluminium foil severing of handling, cut out 2 aluminium foils, and produce 2 and be anodizing to paper tinsel 1a, 1b with given size (long L and wide W).
Afterwards, by the method identical, produce have given size 2 Cathode Foil 2a, the 2b of (long L and wide W) with the manufacture method that is anodizing to paper tinsel 1a, 1b.In addition, severing has 4 barrier papers of given size (long L+ α and wide W+ α), produces barrier paper 3a～3d.
Afterwards, extract anode tap 11,12 out terminal 6,7 with lead-in wire respectively and be connected, extract cathode leg 13,14 out terminal 8,9 with lead-in wire respectively and be connected.Afterwards, extract lead-in wire out terminal 6,7 and be connected with the central portion that is anodizing to paper tinsel 1a, 1b respectively, extract lead-in wire out terminal 8,9 and be connected with the central portion of Cathode Foil 2a, 2b respectively.
So, be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d by state setting shown in Figure 5 and wind up with 2.Also be, be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d with 2 and be arranged so that 2 winding tops that are anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d are consistent, wind up thereby be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d with 2.More particularly, be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d with state setting shown in Figure 6 with 2, and allowing 2, to be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d be center (or counterclockwise) rotation clockwise with fulcrum FLC, is anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d with 2 and winds up.By like this, produce capacity cell 5.In addition, can not make that also 2 winding tops that are anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d are consistent, wind up and be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 4 barrier paper 3a～3d with 2.
Afterwards, extract the capacity cell 5 of terminal 6～9, anode tap 11,12 and cathode leg 13,14 out, carry out the heat treatment of otch oxidation and 150 ℃～300 ℃, and mixed liquor is immersed in the capacity cell 5 being connected with lead-in wire.This mixed liquor is to be the monomer of electroconductive polymer by being polymerized, with the mixed liquor as the p-toluenesulfonic acid two iron alcoholic solutions of oxidizing agent solution.
Afterwards, by the heat chemistry polymerization, between two electrodes of capacity cell 5, form the electroconductive polymer layer.By like this, contain electrolyte in the capacity cell 5.This electrolyte for example is the electroconductive polymer of polythiophene class, polypyrrole class and polyaniline compound, or 7,7,8,8-four cyano quinone bismethane (TCNQ) solid electrolyte that complex constituted.After being immersed in electrolyte in the capacity cell 5, just gum filler 16 is inserted in the capacity cell 5, the capacity cell 5 that is inserted with gum filler 16 is deposited is fixed in the shell 15.
Next, the peristome of shell 15 is implemented laterally extruding and curled, caulking gum filler 16 and capacity cell 5 carry out etch processes.Afterwards, seat board 17 is inserted in the curling face of capacity cell 5, antianode lead-in wire 11,12 and cathode leg 13,14 carry out punch process and the bending as electrode terminal.By like this, finish electrolytic capacitor 10.
Fig. 7 is anodizing to another figure of the winding method of paper tinsel 1a, 1b, Cathode Foil 2a, 2b and barrier paper 3a～3d for expression.Electrolytic capacitor 10 also can be made by following method.By the method identical, produce 2 and be anodizing to paper tinsel 1a, 1b and 2 Cathode Foil 2a, 2b with said method.
Afterwards, produce 2 barrier paper 3a, 3c, with 1 barrier paper 3e with long L+ α and wide W+ α with long L+ α and wide W+ α.Afterwards, extract anode tap 11,12 out terminal 6,7 with lead-in wire respectively and be connected, extract cathode leg 13,14 out terminal 8,9 with lead-in wire respectively and be connected.Next, extract lead-in wire out terminal 6,7 and be connected with the central portion that is anodizing to paper tinsel 1a, 1b respectively, extract lead-in wire out terminal 8,9 and be connected with the central portion of Cathode Foil 2a, 2b respectively.
So, be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 3 barrier paper 3a, 3c, 3e by state setting shown in Figure 6 with 2, and allowing 2, to be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 3 barrier paper 3a, 3c, 3e be center (or counterclockwise) rotation clockwise with fulcrum FLC, is anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 3 barrier paper 3a, 3c, 3e with 2 and winds up.By like this, produce capacity cell 5.
Afterwards, by the method identical, produce electrolytic capacitor 10 with said method.Producing under the situation of electrolytic capacitor 10 by method shown in Figure 7, the barrier paper 3e that is twined constitutes barrier paper 3b, 3d.
And then electrolytic capacitor 10 can also be made by following method among the present invention.The manufacture method of the following stated is to use the aluminium foil spool with given width (500nm) to make the method for electrolytic capacitor 10.At first, etch processes is implemented on the surface of aluminium foil with given width (500nm), synthesized processing afterwards.Produce 2 like this and be anodizing to paper tinsel 1a, 1b and 2 Cathode Foil 2a, 2b.
Afterwards, extract anode tap 11,12 out terminal 6,7 with lead-in wire respectively and be connected, extract cathode leg 13,14 out terminal 8,9 with lead-in wire respectively and be connected.Afterwards, extract lead-in wire out terminal 6,7 and be connected with the central portion that is anodizing to paper tinsel 1a, 1b respectively, extract lead-in wire out terminal 8,9 and be connected with the central portion of Cathode Foil 2a, 2b respectively.
Afterwards, 24 barrier papers (reel) that are anodizing to paper tinsel 1a, 1b (reel), 2 Cathode Foil 2a, 2b (reel) and have a width W+α of regulation are wound up by Fig. 6 or method shown in Figure 7, and block with given length L.By producing capacity cell 5 like this.
Finish electrolytic capacitor 10 by said method afterwards.
As mentioned above, be anodizing to 2 of uses under the situation of paper tinsel 1a, 1b and 2 Cathode Foil 2a, 2b making electrolytic capacitors 10, use 4 or 3 barrier papers.
Next, the electrical characteristic to electrolytic capacitor 10 describes.The comparison of the electrolytic capacitor 10 that execution mode 1 has been shown in the table 1 and the electrical characteristic of former electrolytic capacitor.
[table 1]
| Cathode Foil | The structure number of each electrode foil | Electric capacity (μ F) | tan δ(％) | Equivalent serial resistance (m Ω) | ||
| Example 1 in the | Aluminium foil | 1 | 565 | 2.5 | 5.5 | |
| |
|
2 | 562 | 2.4 | 2.8 | |
| |
|
3 | 563 | 2.5 | 1.9 | |
| Example 2 in the past | The |
1 | 1520 | 1.8 | 7.0 | |
| |
The |
2 | 1560 | 1.8 | 3.6 | |
| |
The |
3 | 1530 | 1.9 | 2.4 |
In the table 1, example the 1, the 2nd in the past, has only and use 1 electrolytic capacitor that capacity cell 150 is constituted that is anodizing to paper tinsel 110 and Cathode Foil 120 mades with length 2L, and embodiment 1,2 is to use 2 electrolytic capacitors 10 that are anodizing to paper tinsel 1 and 2 Cathode Foil 2 mades.
In addition, embodiment 2 is to use 3 to be anodizing to the produced electrolytic capacitor 10 of paper tinsel 1 and 3 Cathode Foil 2, embodiment 3 is replaced by aluminium foil surface with Cathode Foil 2 to be formed with aluminium nitride titanium film person, uses 2 electrolytic capacitors 10 that are anodizing to paper tinsel 1 and 2 Cathode Foil 2 mades.
And then embodiment 4 is replaced by aluminium foil surface with Cathode Foil 2 to be formed with aluminium nitride titanium film person, uses 3 electrolytic capacitors 10 that are anodizing to paper tinsel 1 and 3 Cathode Foil 2 mades.
And then electric capacity and dielectric tangent (tan δ) are measured under 120Hz, and equivalent serial resistance ESR measures under 100kHz.
In addition, the aluminium nitride titanium film is formed on the surface of aluminium foil by evaporation.In addition, will be anodizing under the situation that paper tinsel 1 and Cathode Foil 2 be made as 3, will be anodizing to 1/3rd of the length 2L that be anodizing to paper tinsel 110 and Cathode Foil 120 of the length of paper tinsel 1 with Cathode Foil 2 before being made as.And then each value of the capacity shown in the table 1, dielectric tangent (tan δ) and equivalent serial resistance ESR is the mean value of 30 test portion numbers.
According to the result of table 1, the capacity of electrolytic capacitor 10 of the present invention and dielectric tangent (tan δ) and example 1,2 in the past are much at one.In addition, be that the equivalent serial resistance ESR of electrolytic capacitor 10 of the present invention reduces to about 1/2nd (with reference to embodiment 1,3) of example 1,2 in the past under 2 the situation being anodizing to paper tinsel 1 number with Cathode Foil 2.
In addition, be that the equivalent serial resistance ESR of electrolytic capacitor 10 of the present invention reduces to about 1/3rd (with reference to embodiment 2,4) of example 1,2 in the past under 3 the situation being anodizing to paper tinsel 1 number with Cathode Foil 2.
Therefore, be made as 2 or 3 by the number that will be anodizing to paper tinsel 1 and Cathode Foil 2, and 1/2nd or 1/3rd of the length L that is anodizing to paper tinsel 110 and Cathode Foil 120 before the length that will be anodizing to paper tinsel 1 and Cathode Foil 2 is made as, just can in the electric capacity and dielectric tangent that keep electrolytic capacitor 10, equivalent serial resistance ESR be reduced to about 1/2nd or 1/3rd.
Also promptly, wind up through barrier paper 3 with Cathode Foil 2, can produce electrolytic capacitor 10 with effect identical with 2 or 3 capacity cell persons of being formed in parallel by being anodizing to paper tinsel 1 with 2 or 3.
In addition, in the table 1, why the electric capacity of example 2 and embodiment 3,4 greater than the electric capacity with embodiment 1,2 of example 1 in the past, be because form the aluminium nitride titanium film by the surface in Cathode Foil 2 in the past, make Cathode Foil 2 better with being connected of electroconductive polymer, all capacity increase.Also be, if condenser capacity (static capacity) is made as C, the anode foils capacity is made as Ca, the Cathode Foil capacity is made as Cc, condenser capacity (static capacity) C calculates by 1/C=1/Ca+1/Cc, is formed with on the Cathode Foil surface under the situation of aluminium nitride film, because Cathode Foil capacity C c maximization (or infinityization), condenser capacity (static capacity) C is infinitely near 0 (zero), so condenser capacity (static capacity) C becomes C=Ca.Consequently, even use identical anode foils, capacitance also increases.
Fig. 8 is another stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.The electrolytic capacitor of embodiments of the present invention 1 can be electrolytic capacitor 10A shown in Figure 8.With reference to Fig. 8, electrolytic capacitor 10A has replaced to barrier paper 3f, 3g with the barrier paper 3a～3d of electrolytic capacitor 10, and other are all identical with electrolytic capacitor 10.
Electrolytic capacitor 10A is anodizing to 2 capacity cell 5c, the 5d that paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g be entwined by 2 and constitutes.
Capacity cell 5c is by being anodizing to paper tinsel 1a, Cathode Foil 2a and barrier paper 3f, 3g constitute, and capacity cell 5d is by being anodizing to paper tinsel 1b, Cathode Foil 2b and barrier paper 3f, 3g constitute.In addition, capacity cell 5c is arranged on interior all sides, and capacity cell 5d is arranged on outer circumferential side.Therefore, electrolytic capacitor 10A is made of 2 capacity cell 5c, 5d on the diverse location that is arranged on radially.
Fig. 9 is barrier paper 3f shown in Figure 8, the plane graph of 3g.With reference to Fig. 9, barrier paper 3f, 3g have the length of 2L+ α and the width of W+ α respectively.
The stereogram of the collocation method that is anodizing to paper tinsel 1a, 1b, Cathode Foil 2a, 2b and barrier paper 3f, 3g when Figure 10 makes electrolytic capacitor 10A shown in Figure 8 for expression.With reference to Fig. 9,2 are anodizing to paper tinsel 1a, 1b and are provided with continuously between barrier paper 3f and barrier paper 3g.In this case, 2 are anodizing to paper tinsel 1a, 1b and separate given distance and be provided with, so that electric insulation mutually.In addition, Cathode Foil 2a through barrier paper 3g be anodizing to paper tinsel 1a and be provided with in opposite directions.Cathode Foil 2b through barrier paper 3g be anodizing to paper tinsel 1b and be provided with in opposite directions.Consequently, 2 relative winding direction DR1 of Cathode Foil 2a, 2b are provided with continuously.In this case, 2 Cathode Foil 2a, 2b separate given distance and are provided with, mutually electric insulation.Like this, among the electrolytic capacitor 10A, 2 are anodizing to paper tinsel 1a, 1b and are provided with continuously with 2 relative winding direction DR1 of Cathode Foil 2a, 2b.
2 are anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g according to state setting shown in Figure 10,2 are anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g from twining top 1A, 2A, 3A to winding direction DR1 winding, produce the capacity cell 5 that is made of 2 capacity cells 5c, 5d.Be anodizing to the barrier paper 3f of paper tinsel 1a, Cathode Foil 2a and long L part, the stage of 3g in winding, produce capacity cell 5c, be anodizing to the barrier paper 3f of paper tinsel 1b, Cathode Foil 2b and remaining long L part, the stage of 3g in winding, produce capacity cell 5d.
Therefore, capacity cell 5c is arranged on interior all sides, and capacity cell 5d is arranged on outer circumferential side.
In addition, in the making of electrolytic capacitor 10A, 2 be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g can be from twine top 1A, 2A, 3A does not begin to twine, and is anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g but twine 2 since the central portion of 2 barrier paper 3f, 3g.Like this, by 2 winding methods that are anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g, lead-in wire extract out terminal 6～9 be made as shown in Figure 1 quadrangle or linearity shown in Figure 8.
In addition, in the making of electrolytic capacitor 10A, Cathode Foil 2b can be set on the position of Cathode Foil 2a, Cathode Foil 2a is set on the position that is anodizing to paper tinsel 1b, on the position of Cathode Foil 2b, be provided with and be anodizing to paper tinsel 1b, twine 2 and be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g.Also promptly, the paper tinsel of different poles can be arranged on the winding direction DR1, twine 2 and be anodizing to paper tinsel 1a, 1b, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g.
Among the electrolytic capacitor 10A,, so has capacity C because capacity cell 5c, 5d are anodizing to paper tinsel and Cathode Foil constitutes by what have length L and a width W respectively.In addition, capacity cell 5, have with two capacity cell 5c, identical effect when 5d is together in parallel, so its capacity become 2C (=C0), identical with the capacity C 0 of former aluminium wound form solid electrolytic capacitor 100.
So, electrolytic capacitor 10A, though using the paper tinsel 1 that is anodizing to of half length that is anodizing to paper tinsel 110 before having makes with Cathode Foil 2, its capacity can be not lower than the capacity of former aluminium wound form solid electrolytic capacitor 100 yet, and equivalent serial resistance is 1/2nd of a former aluminium wound form solid electrolytic capacitor 100.
In addition, since electrolytic capacitor 10A will be former the paper tinsel 110 that is anodizing to be made as 2 respectively with Cathode Foil 120 and be anodizing to paper tinsel with 2 Cathode Foil are made, so the diameter of diameter after the winding and former aluminium wound form solid electrolytic capacitor 100 is about equally.Promptly, can produce the electrolytic capacitor 10A that has reduced equivalent serial resistance, its size can be greater than former aluminium wound form solid electrolytic capacitor 100, and the maintenance capacity yet.
Figure 11 is another stereogram of the formation of the electrolytic capacitor of expression embodiments of the present invention 1.The electrolytic capacitor of embodiments of the present invention 1 can be electrolytic capacitor 10B shown in Figure 11.With reference to Figure 11, electrolytic capacitor 10B has increased anode terminal 18 and cathode terminal 19 in electrolytic capacitor shown in Figure 1 10, and other are all identical with electrolytic capacitor 10.
In addition, among the electrolytic capacitor 10B, 2 anode taps 11,12 can not be connected with 1 cathode terminal 19 with 1 anode terminal 18 respectively with 2 cathode legs 13,14, use and tie into 1.
In addition, in the execution mode 1, also anode terminal 18 can be added with cathode terminal 19 and give electrolytic capacitor 10A.
Figure 12 is the plane graph that is anodizing to paper tinsel and Cathode Foil.With reference to Figure 12, be anodizing to paper tinsel 21a and Cathode Foil 22a has length L 1 and width W, be anodizing to paper tinsel 21b and Cathode Foil 22b has length L 2 and width W.Here, L1+L2=2L.
Among the present invention, electrolytic capacitor 10,10A are anodizing to paper tinsel 1a, 1b and Cathode Foil 2a, 2b, respectively can be by being anodizing to paper tinsel 21a, 21b and Cathode Foil 22a, 22b replace.
In this case, be anodizing to the capacity cell that paper tinsel 21a, barrier paper 3b and Cathode Foil 22a are constituted, have and be anodizing to the different capacity of capacity cell that paper tinsel 21b, barrier paper 3d and Cathode Foil 22b are constituted.
Therefore, among the present invention, 2 capacity cells that contained among electrolytic capacitor 10, the 10A can have mutually different capacity.
The capacity of 2 capacity cells containing among electrolytic capacitor 10, the 10A is made as the method for mutually different capacity, be not limited in the length that is anodizing to paper tinsel and Cathode Foil with a side capacity cell and be made as the length diverse ways that is anodizing to paper tinsel and Cathode Foil with the opposing party's capacity cell, can also adopt the width that is anodizing to paper tinsel and Cathode Foil with a side capacity cell to be made as the width diverse ways that is anodizing to paper tinsel and Cathode Foil with the opposing party's capacity cell.
Also be, the capacity of 2 capacity cells containing among electrolytic capacitor 10, the 10A is made as the method for mutually different capacity, can adopts the area that is anodizing to paper tinsel and Cathode Foil with a side capacity cell to be made as the area diverse ways that is anodizing to paper tinsel and Cathode Foil with the opposing party's capacity cell.Outside change the method for the resultant voltage of the kind of paper tinsel and paper tinsel in addition.
More than, the number that antianode changes into paper tinsel and Cathode Foil is that 2 or 3 s' situation is illustrated, but is not limited in this among the present invention, is anodizing to the number of paper tinsel and Cathode Foil, and is general so long as n (n is the integer more than 2) is just passable.
In this case, barrier paper is made as 2n or 2n-1 opens, and anode tap and cathode leg are made as the n root respectively.And n root anode tap can be connected with 1 anode terminal, n root cathode leg is connected with 1 cathode terminal.In addition, be anodizing to paper tinsel 1, n and open Cathode Foil 2 and 2n or the 2n-1 diameter when opening barrier paper 3 and winding up in that n is opened, be made as under the roughly the same situation of diameter when being anodizing to 110,1 Cathode Foil 120 of paper tinsel and 2 barrier papers 130 and winding up with 1, n opened be anodizing to paper tinsel 1 and open Cathode Foil 2 length separately, be made as n/one who is anodizing to paper tinsel 110 and the length of Cathode Foil 120 when 1 be anodizing to 110,1 Cathode Foil 120 of paper tinsel and 1 or 2 barrier papers 130 and wind up with n.
Be anodizing to paper tinsel 1, n and open Cathode Foil 2 and 2n or 2n-1 and open barrier paper 3 and wind up under the situation of producing electrolytic capacitor 10,10A in that n is opened, electrolytic capacitor 10,10A contain n capacity cell, but among the present invention, can be made as the capacity of n capacity cell different by said method.
In addition, more than lead-in wire is extracted out terminal 6～9 is that the situation that the position of L/2 is connected is illustrated with winding top 1A that distance is anodizing to paper tinsel 1a, 1b and Cathode Foil 2a, 2b respectively, but be not limited in this among the present invention, lead-in wire can also be extracted out terminal 6～9 and be connected with position in winding top 1A that distance is anodizing to paper tinsel 1a, 1b and Cathode Foil 2a, 2b is the scope of 7L/20～13L/20 respectively.
If this be since will go between extract out terminal 6～9 respectively be that position in the scope of 7L/20～13L/20 is connected apart from the winding top 1A that is anodizing to paper tinsel 1a, 1b and Cathode Foil 2a, 2b, just the equivalent serial resistance of electrolytic capacitor 10,10A almost is constant.
And then, more than electrolytic capacitor 10,10A are included solid electrolyte situation be illustrated, but be not limited in this among the present invention, electrolytic capacitor 10,10A can also contain liquid electrolyte.Also promptly, electrolytic capacitor 10,10A can contain the electrolyte that any constituted in solid electrolyte and the liquid electrolyte.
And then, above antianode changes into paper tinsel 1 and is illustrated by the situation that aluminium foil constitutes with Cathode Foil 2, but be not limited in this among the present invention, be anodizing to valve-use metal oxide evaporation paper tinsel, monometallic nitride evaporation paper tinsel, composite metal nitride evaporation paper tinsel and carbon paper tinsel etc. that paper tinsel 1 can also be to use valve-use metals such as tantalum and niobium to make with Cathode Foil 2.
And then the electrolytic capacitor 10 of embodiments of the present invention 1,10A can use the paper tinsel 110 that is anodizing to that has with aluminium wound form solid electrolytic capacitor 100 to make with Cathode Foil 2 with the paper tinsel 1 that is anodizing to of the length equal length of Cathode Foil 120.In this case, electrolytic capacitor 10 has the capacity greater than the capacity of aluminium wound form solid electrolytic capacitor 100, and greater than the diameter of the diameter of aluminium wound form solid electrolytic capacitor 100.
In addition, 1 is anodizing to 110,1 Cathode Foil 120 of paper tinsel and 1 or 2 aluminium wound form solid electrolytic capacitors 100 that barrier papers 130 windings are made among the present invention, constitutes by " benchmark electrolytic capacitor ".
[execution mode 2]
Figure 13 is the stereogram of the formation of the electrolytic capacitor of expression execution mode 2.With reference to Figure 13, the electrolytic capacitor 20 of execution mode 2 has replaced to 1 Cathode Foil 23 with 2 Cathode Foil 2a, the 2b of Fig. 8 and electrolytic capacitor 10A shown in Figure 10, and other are all identical with electrolytic capacitor 10A.Therefore, electrolytic capacitor 20 also has 2 capacity cells 5 that capacity cell 5c, 5d are constituted on the setting diverse location diametrically.In addition, in the electrolytic capacitor 20, can use the resin-sealed gum filler 16 that replaces.In addition, resin-sealedly not only can in electrolytic capacitor 20, use, can also in electrolytic capacitor 10,10A, 10B, use.
Figure 14 is the plane graph of Cathode Foil 23 shown in Figure 13.With reference to Figure 14, Cathode Foil 23 has the length of 2L and the width of W.In addition, lead-in wire is extracted out on the position that terminal 8 is L/2 at a 23A of square end portion of distance Cathode Foil 23 and is connected with Cathode Foil 23, and lead-in wire is extracted out on the position that terminal 9 is L/2 at the opposing party end of distance Cathode Foil 23 23B and is connected with Cathode Foil 23.Consequently, the lead-in wire distance of extracting 8,9 of terminals out becomes L.
The stereogram of the collocation method that is anodizing to paper tinsel 1a, 1b, Cathode Foil 23 and barrier paper 3f, 3g when Figure 15 makes electrolytic capacitor 20 shown in Figure 13 for expression.With reference to Figure 15,2 are anodizing to paper tinsel 1a, 1b and are provided with continuously between barrier paper 3f and barrier paper 3g.In this case, 2 are anodizing to paper tinsel 1a, 1b and separate given distance and be provided with, mutually electric insulation.In addition, Cathode Foil 23 through barrier paper 3g be anodizing to paper tinsel 1a, 1b and be provided with in opposite directions.
2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g according to state setting shown in Figure 15,2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g from twining top 1A, 23A, 3A to winding direction DR1 winding, produce the capacity cell 5 that is made of 2 capacity cells 5c, 5d.Be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 1a, long L part and long L, the stage of 3g in winding, produce capacity cell 5c, be anodizing to the Cathode Foil 23 of paper tinsel 1b, remaining long L part and the barrier paper 3f of remaining long L part, the stage of 3g in winding, produce capacity cell 5d.
Therefore, capacity cell 5c is arranged on interior all sides, and capacity cell 5d is arranged on outer circumferential side.
In addition, in the making of electrolytic capacitor 20,2 be anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g can be from twine top 1A, 23A, 3A does not begin to twine, and is anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g but twine 2 since the central portion of 2 barrier paper 3f, 3g.Like this, by 2 winding methods that are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g, lead-in wire extract out terminal 6～9 be set to as shown in Figure 1 quadrangle or linearity shown in Figure 13.
Be anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g with 2 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20 by the method identical with the manufacture method of electrolytic capacitor 10.In the making of this electrolytic capacitor 20, under the situation of using resin-sealed replacement gum filler 16, since resin-sealed more easy to manufacture than gum filler, therefore can improve process yield (productivity).
In the electrolytic capacitor 20,, so has capacity C because capacity cell 5c, 5d are anodizing to paper tinsel and Cathode Foil constitutes by what have length L and a width W respectively.In addition, capacity cell 5 as described later, have with two capacity cell 5c, identical effect when 5d is together in parallel, so its capacity become 2C (=C0), identical with the capacity C 0 of former aluminium wound form solid electrolytic capacitor 100.
So, electrolytic capacitor 20, though using the Cathode Foil 23 that is anodizing to paper tinsel 1 and has the length identical with former Cathode Foil 120 of half length that is anodizing to paper tinsel 110 before having makes, its capacity can be not littler than the capacity of former aluminium wound form solid electrolytic capacitor 100 yet, and equivalent serial resistance is 1/2nd of a former aluminium wound form solid electrolytic capacitor 100.
In addition, since electrolytic capacitor 20 will be former the paper tinsel 110 that is anodizing to be divided into 2 of on winding direction DR1, being provided with continuously and be anodizing to paper tinsel 1a, 1b and make, therefore the diameter of diameter after the winding and former aluminium wound form solid electrolytic capacitor 100 is about equally.Promptly, can produce the electrolytic capacitor 20 that has reduced equivalent serial resistance, its size can be greater than former aluminium wound form solid electrolytic capacitor 100, and the maintenance capacity yet.
Like this, be anodizing to paper tinsel 1a, 1b, can produce the electrolytic capacitor 20 of effect identical when having with 2 capacity cell 5c, 5d parallel connections by using 23,2 of 1 Cathode Foil.
The comparison of the electrolytic capacitor 20 that execution mode 2 has been shown in the table 2 and the electrical characteristic of former electrolytic capacitor.
[table 2]
| Cathode Foil | Encapsulant | Electric capacity (μ F) | tanδ(％) | Equivalent serial resistance (m Ω) | Leakage current (μ A) | |
| Example 1 in the past | Aluminium foil | Rubber | 565 | 2.5 | 5.5 | 11 |
| |
Aluminium foil | Rubber | 567 | 2.3 | 2.7 | 12 |
| |
Aluminium foil | Resin | 562 | 2.5 | 2.7 | 18 |
| Example 2 in the past | The nitrogenize aluminium foil | Rubber | 1520 | 1.8 | 7.0 | 13 |
| |
The nitrogenize aluminium foil | Rubber | 1532 | 1.7 | 3.4 | 11 |
| |
The nitrogenize aluminium foil | Resin | 1539 | 1.7 | 3.4 | 19 |
In the table 2, example the 1, the 2nd in the past, has only and use 1 electrolytic capacitor that capacity cell 150 is constituted that is anodizing to paper tinsel 110 and Cathode Foil 120 mades with length 2L, embodiment 1 to be to use 2 electrolytic capacitors 10 that are anodizing to paper tinsel 1a, 1b and 1 Cathode Foil 23 and gum filler 16 mades.
In addition, embodiment 2 uses the resin-sealed produced electrolytic capacitor 20 of gum filler 16 that replaces in embodiment 1, embodiment 3 is replaced by aluminium foil surface with Cathode Foil 23 to be formed with aluminium nitride titanium film person in embodiment 1, use 2 electrolytic capacitors 20 that are anodizing to paper tinsel 1a, 1b and 1 Cathode Foil 22 made, embodiment 4 uses the resin-sealed produced electrolytic capacitor 20 of gum filler 16 that replaces in embodiment 3.
And then electric capacity and dielectric tangent (tan δ) are measured under 120Hz, and equivalent serial resistance ESR measures under 100kHz, the value when revealing electric current LC and be rated voltage and having loaded 2 minutes.
In addition, the aluminium nitride titanium film is formed on the surface of aluminium foil by evaporation.And then each value of the electric capacity shown in the table 2, dielectric tangent (tan δ), equivalent serial resistance ESR and leakage current LC is the mean value of 30 test portion numbers.
According to the result of table 2, the electric capacity of the electrolytic capacitor 20 of execution mode 2 and dielectric tangent (tan δ) and example 1,2 in the past are much at one.In addition, the equivalent serial resistance ESR of the electrolytic capacitor 20 of execution mode 2 reduces to about 1/2nd (with reference to embodiment 1～4) of example 1,2 in the past.In addition, even gum filler 16 is changed to resin-sealed, equivalent serial resistance can not change yet.
Like this, can confirm by experiment,, be made as 2, also can when keeping capacitor volume, equivalent serial resistance be reduced to about 1/2nd by the number that will be anodizing to paper tinsel even Cathode Foil is 1.In addition, can also confirm by experiment that even use resin-sealedly, equivalent serial resistance can not change yet.
The stereogram of another method to set up that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 16 uses 2 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor 20 shown in Figure 13 for expression.With reference to Figure 16, when using 2 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor 20 shown in Figure 13, electrolytic capacitor 20 also has barrier paper 3h except 2 barrier paper 3f, 3g.
If it is long that barrier paper 3f, 3g ratio is anodizing to paper tinsel 1a, 1b, then can be shorter than barrier paper 3h.Being anodizing to paper tinsel 1a is arranged between barrier paper 3g and the barrier paper 3h.Being anodizing to paper tinsel 1b is arranged between barrier paper 3f and the barrier paper 3g.In this case, being anodizing to paper tinsel 1b is set in winding direction DR1 with to be anodizing to paper tinsel 1a continuous.Cathode Foil 23 be made as through barrier paper 3h be anodizing to paper tinsel 1a in opposite directions, through barrier paper 3g, 3h and be anodizing to paper tinsel 1b in opposite directions.
2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 3 barrier paper 3f, 3g, 3h according to state setting shown in Figure 16,2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 3 barrier paper 3f, 3g, 3h and to winding direction DR1 winding, produce the capacity cell 5 that is made of 2 capacity cells 5c, 5d from winding top 1A, 23A, 3A.Be anodizing to partly barrier paper 3f, 3g of the Cathode Foil 23 of paper tinsel 1a, long L part and long L, the stage of 3h in winding, produce capacity cell 5c, be anodizing to the Cathode Foil 23 of paper tinsel 1b, remaining long L part and barrier paper 3f, the 3g of remaining long L part, the stage of 3h in winding, produce capacity cell 5d.
Therefore, capacity cell 5c is arranged on interior all sides, and capacity cell 5d is arranged on outer circumferential side.
Be anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 3 barrier paper 3f, 3g, 3h with 2 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20 by the method identical with the manufacture method of electrolytic capacitor 10.
In addition, being anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 3 barrier paper 3f, 3g, 3h 2 of uses makes under the situation of electrolytic capacitor 20, can in Figure 16, will be anodizing to paper tinsel 1a and be arranged between barrier paper 3f and the barrier paper 3g, will be anodizing to paper tinsel 1b and be arranged between barrier paper 3g and the barrier paper 3h.
The stereogram of another method to set up that is anodizing to paper tinsel, Cathode Foil and barrier paper when Figure 17 uses 2 to be anodizing to paper tinsel and 1 Cathode Foil making electrolytic capacitor 20 shown in Figure 13 for expression.
With reference to Figure 17, Cathode Foil 23 is arranged between barrier paper 3f and the barrier paper 3g.Be anodizing to paper tinsel 1a and be provided with in opposite directions, be anodizing to paper tinsel 1b and be provided with in opposite directions through barrier paper 3f and Cathode Foil 23 through barrier paper 3g and Cathode Foil 23.In this case, being anodizing to paper tinsel 1b is set in winding direction DR1 with to be anodizing to paper tinsel 1a continuous.
2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g according to state setting shown in Figure 17,2 are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g from twining top 1A, 23A, 3A to winding direction DR1 winding, produce the capacity cell 5 that is made of 2 capacity cells 5c, 5d.Be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 1a, long L part and long L, the stage of 3g in winding, produce capacity cell 5c, be anodizing to the Cathode Foil 23 of paper tinsel 1b, remaining long L part and the barrier paper 3f of remaining long L part, the stage of 3g in winding, produce capacity cell 5d.
Therefore, capacity cell 5c is arranged on interior all sides, and capacity cell 5d is arranged on outer circumferential side.
Be anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g with 2 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20 by the method identical with the manufacture method of electrolytic capacitor 10.
In addition, in the making of electrolytic capacitor 20,2 be anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g can be from twine top 1A, 23A, 3A does not begin to twine, and is anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g but twine 2 since the central portion of 2 barrier paper 3f, 3g.Like this, by 2 winding methods that are anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g, lead-in wire extract out terminal 6～9 be set to as shown in Figure 1 quadrangle or linearity shown in Figure 13.
In addition, being anodizing to paper tinsel 1a, 1b, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g 2 of uses makes under the situation of electrolytic capacitors 20, can in Figure 17, be anodizing to paper tinsel 1a and be set in opposite directions, be anodizing to paper tinsel 1b and be set in opposite directions through barrier paper 3g and Cathode Foil 23 through barrier paper 3f and Cathode Foil 23.
Figure 18 is another stereogram of the formation of the electrolytic capacitor of expression execution mode 2.The electrolytic capacitor of execution mode 2 also can be electrolytic capacitor 20A shown in Figure 180.With reference to Figure 18, electrolytic capacitor 20A has replaced to be anodizing to paper tinsel 1a, the 1b of Figure 13 and electrolytic capacitor 20 shown in Figure 15 to be anodizing to paper tinsel 24a, 24b, 24c, and appended extraction lead terminal 15,17, anode tap 16 and cathode leg 18, identical with electrolytic capacitor 20 in addition.In addition, among the electrolytic capacitor 20A, can use resin extender to replace gum filler 16.
Among the electrolytic capacitor 20A, capacity cell 5 is made of capacity cell 5e, 5f, 5g.Capacity cell 5e is arranged on interior week, and capacity cell 5f is arranged on the periphery of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Figure 19 is for constituting the plane graph that is anodizing to paper tinsel 24a～24c, Cathode Foil 23 and barrier paper 3f, 3g of electrolytic capacitor 20A shown in Figure 180.With reference to Figure 19, among the electrolytic capacitor 20A, lead-in wire is extracted out on the position that terminal 8 is L/3 at a 23A of square end portion of distance Cathode Foil 23 and is connected with Cathode Foil 23, and lead-in wire is extracted out on the position that terminal 17 is L/3 at the opposing party end of distance Cathode Foil 23 23B and is connected with Cathode Foil 23.Lead-in wire is extracted terminal 9 out and is being connected with Cathode Foil 23 on the position of 2L/3 apart from lead-in wire extraction terminal 8,17 respectively.
Be anodizing to paper tinsel 24 by 3 be anodizing to paper tinsel 24a, 24b, 24c constitutes.In addition, 3 are anodizing to paper tinsel 24a, 24b, 24c and implemented the synthetic aluminium foil of handling by the surface respectively and constitute.Be anodizing to paper tinsel 24a, 24b, 24c and have the length of 2L/3 and the width of W respectively.Lead-in wire is extracted out on the position that terminal 6 is L/3 at the 24A of square end portion that distance is anodizing to paper tinsel 24a and is anodizing to paper tinsel 24a and is connected, lead-in wire is extracted out on the position that terminal 7 is L/3 at the 24B of square end portion that distance is anodizing to paper tinsel 24b and is anodizing to paper tinsel 24b and is connected, lead-in wire extract out terminal 15 on the position that apart from a 24C of square end portion who is anodizing to paper tinsel 24c is L/3 be anodizing to paper tinsel 24c and be connected.
Among the electrolytic capacitor 20A, capacity cell 5e constitutes by being anodizing to paper tinsel 24a, Cathode Foil 23 and barrier paper 3f, 3g, capacity cell 5f constitutes by being anodizing to paper tinsel 24b, Cathode Foil 23 and barrier paper 3f, 3g, and capacity cell 5g constitutes by being anodizing to paper tinsel 24c, Cathode Foil 23 and barrier paper 3f, 3g.
The stereogram of the collocation method that is anodizing to paper tinsel 24a, 24b, 24c, Cathode Foil 23 and barrier paper 3f, 3g when Figure 20 makes electrolytic capacitor 20A shown in Figure 180 for expression.With reference to Figure 20, Cathode Foil 23 is arranged between barrier paper 3f and the barrier paper 3g.3 be anodizing to paper tinsel 24a, 24b, 24c is provided with in opposite directions through barrier paper 3g and Cathode Foil 23.Also promptly, 3 are anodizing to paper tinsel 24a, 24b, 24c setting continuously on winding direction DR1.In this case, 3 are anodizing to paper tinsel 24a, 24b, 24c and separate given distance and be provided with, mutually electric insulation.
3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g according to state setting shown in Figure 20,3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g from twining top 3A, 23A, 24A to winding direction DR1 winding, produce the capacity cell 5 that is made of 3 capacity cells 5e, 5f, 5g.Be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 24a, long 2L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5e, be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 24b, long 2L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5f, be anodizing to the Cathode Foil 23 of paper tinsel 24c, remaining long 2L/3 part and the barrier paper 3f of remaining long 2L/3 part, the stage of 3g in winding, produce capacity cell 5g.
Therefore, capacity cell 5e is arranged on interior all sides, and capacity cell 5f is arranged on the outer circumferential side of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Be anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g with 3 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20A by the method identical with the manufacture method of electrolytic capacitor 10.In the making of this electrolytic capacitor 20A, under the situation of using resin-sealed replacement gum filler 16, make easily than gum filler 16, therefore can improve process yield (productivity) owing to resin-sealed.
Among the electrolytic capacitor 20A,, so has capacity C 1 because capacity cell 5e, 5f, 5g are anodizing to paper tinsel with Cathode Foil constitutes by what have length 2L/3 and a width W respectively.In addition, capacity cell 5, have with 3 capacity cell 5e, 5f, identical effect when 5g is together in parallel, so its capacity become 3C1 (=C0), identical with the capacity C 0 of former aluminium wound form solid electrolytic capacitor 100.
So, electrolytic capacitor 20A, though using the Cathode Foil 23 that is anodizing to paper tinsel 24a, 24b, 24c and has the length identical with former Cathode Foil 120 of 1/3rd length that are anodizing to paper tinsel 110 before having makes, its capacity can be not lower than the capacity of former aluminium wound form solid electrolytic capacitor 100 yet, and equivalent serial resistance is 1/3rd of a former aluminium wound form solid electrolytic capacitor 100.
In addition, since electrolytic capacitor 20A will be former the paper tinsel 110 that is anodizing to be divided into that 3 of being provided with continuously are anodizing to paper tinsel 24a, 24b, 24c makes on winding direction DR1, therefore the diameter of diameter after the winding and former aluminium wound form solid electrolytic capacitor 100 is about equally.Promptly, can produce the electrolytic capacitor 20A that has reduced equivalent serial resistance, its size can be greater than former aluminium wound form solid electrolytic capacitor 100, and the maintenance capacity yet.
Like this, be anodizing to paper tinsel 24a, 24b, 24c, can produce the electrolytic capacitor 20A that has with 3 capacity cell 5e, 5f, 5g identical effect when in parallel by using 1 Cathode Foil 23 and 3.
The stereogram of another collocation method that is anodizing to paper tinsel 24a, 24b, 24c, Cathode Foil 23 and barrier paper 3f, 3g when Figure 21 makes electrolytic capacitor 20A shown in Figure 180 for 3 of expression uses are anodizing to paper tinsel 24a, 24b, 24c and 1 Cathode Foil 23.
With reference to Figure 21,3 are anodizing among paper tinsel 24a, 24b, the 24c, are anodizing to paper tinsel 23a and are provided with in opposite directions through barrier paper 3f and Cathode Foil 23.Be anodizing to the collocation method of paper tinsel 24b, 24c, Cathode Foil 23 and barrier paper 3f, 3g, identical with collocation method shown in Figure 20.In this case, 3 are anodizing to paper tinsel 24a, 24b, 24c setting continuously in winding direction DR1, and 2 are anodizing to paper tinsel 24b, 24c and separate given distance setting, electric insulation mutually.
3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g according to state setting shown in Figure 21,3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g from twining top 3A, 23A, 24A to winding direction DR1 winding, produce the capacity cell 5 that is made of 3 capacity cells 5e, 5f, 5g.Be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 24a, long 2L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5e, be anodizing to partly barrier paper 3f of the Cathode Foil 23 of paper tinsel 24b, long 2L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5f, be anodizing to the Cathode Foil 23 of paper tinsel 24c, remaining long 2L/3 part and the barrier paper 3f of remaining long 2L/3 part, the stage of 3g in winding, produce capacity cell 5g.
Therefore, capacity cell 5e is arranged on interior all sides, and capacity cell 5f is arranged on the outer circumferential side of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Be anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 2 barrier paper 3f, 3g with 3 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20A by the method identical with the manufacture method of electrolytic capacitor 10.
In addition, among Figure 21 3 be anodizing to and be anodizing to paper tinsel 24a among paper tinsel 24a, 24b, the 24c and be illustrated through the situation that barrier paper 3f and Cathode Foil 23 are provided with in opposite directions, but be not limited in this among the present invention, 3 can also be anodizing among paper tinsel 24a, 24b, the 24c, be anodizing to paper tinsel 24b or be anodizing to paper tinsel 24c and be provided with in opposite directions through barrier paper 3f and Cathode Foil 23.
The stereogram of another collocation method that is anodizing to paper tinsel 24a, 24b, 24c, Cathode Foil 23 and barrier paper when Figure 22 makes electrolytic capacitor 20A shown in Figure 180 for 3 of expression uses are anodizing to paper tinsel 24a, 24b, 24c and 1 Cathode Foil 23.
With reference to Figure 22, when using 3 to be anodizing to paper tinsel 24a, 24b, 24c and 23 making of 1 Cathode Foil electrolytic capacitor 20A shown in Figure 180, electrolytic capacitor 20A also has barrier paper 3h, 3i except 2 barrier paper 3f, 3g.
3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 4 barrier paper 3f, 3g, 3h, 3i according to state setting shown in Figure 22,3 are anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 4 barrier paper 3f, 3g, 3h, 3i and to winding direction DR1 winding, produce the capacity cell 5 that is made of 3 capacity cells 5e, 5f, 5g from winding top 3A, 23A, 24A.Be anodizing to partly barrier paper 3f, 3g of the Cathode Foil 23 of paper tinsel 24a, long 2L/3 part and long 2L/3, the stage of 3h, 3i in winding, produce capacity cell 5e, be anodizing to partly barrier paper 3f, 3g of the Cathode Foil 23 of paper tinsel 24b, long 2L/3 part and long 2L/3, the stage of 3h, 3i in winding, produce capacity cell 5f, be anodizing to the Cathode Foil 23 of paper tinsel 24c, remaining long 2L/3 part and barrier paper 3f, the 3g of remaining long 2L/3 part, the stage of 3h, 3i in winding, produce capacity cell 5g.
Therefore, capacity cell 5e is arranged on interior all sides, and capacity cell 5f is arranged on the outer circumferential side of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Be anodizing to paper tinsel 24a, 24b, 24c, 1 Cathode Foil 23 and 4 barrier paper 3f, 3g, 3h, 3i with 3 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20A by the method identical with the manufacture method of electrolytic capacitor 10.
Figure 23 is another stereogram of the formation of the electrolytic capacitor of expression execution mode 2.The electrolytic capacitor of execution mode 2 also can be electrolytic capacitor 20B shown in Figure 23.
With reference to Figure 23, electrolytic capacitor 20B has replaced to Cathode Foil 2a, 2b with the Cathode Foil 23 of electrolytic capacitor 20A shown in Figure 180, and is identical with electrolytic capacitor 20A in addition.In addition, among the electrolytic capacitor 20B, also can use resin extender to replace gum filler 16.
Figure 24 is for constituting the plane graph that is anodizing to paper tinsel 24a～24c, Cathode Foil 2a, 2b and barrier paper 3f, 3g of electrolytic capacitor 20B shown in Figure 23.With reference to Figure 24, among the electrolytic capacitor 20B, lead-in wire is extracted out on the position that terminal 8 is L/2 at the 2A of square end portion of distance Cathode Foil 2a and is connected with Cathode Foil 2a, lead-in wire is extracted terminal 9 out and is connected with the opposing party end 2B of Cathode Foil 2a, and lead-in wire is extracted out on the position that terminal 17 is L/2 at the other end 2D of distance Cathode Foil 2b and is connected with Cathode Foil 2b.
Among the electrolytic capacitor 20B, capacity cell 5e is by being anodizing to paper tinsel 24a, Cathode Foil 2a and barrier paper 3f, 3g constitute, capacity cell 5f constitutes by being anodizing to paper tinsel 24b, Cathode Foil 2a, 2b and barrier paper 3f, 3g, and capacity cell 5g is by being anodizing to paper tinsel 24c, Cathode Foil 2b and barrier paper 3f, 3g constitute.
The stereogram of the collocation method that is anodizing to paper tinsel 24a, 24b, 24c, Cathode Foil 2a, 2b and barrier paper 3f, 3g when Figure 25 makes electrolytic capacitor 20B shown in Figure 23 for expression.With reference to Figure 25, Cathode Foil 2a, 2b are arranged between barrier paper 3f and the barrier paper 3g.3 be anodizing to paper tinsel 24a, 24b, 24c is provided with in opposite directions through barrier paper 3g and Cathode Foil 2a, 2b.Also promptly, 3 are anodizing to paper tinsel 24a, 24b, 24c setting continuously on winding direction DR1.In this case, 3 are anodizing to paper tinsel 24a, 24b, 24c and separate given distance and be provided with, electric insulation mutually, and 2 Cathode Foil 2a, 2b separate given distance and are provided with, mutually electric insulation.
3 are anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g according to state setting shown in Figure 25,3 are anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g from twining top 2A, 3A, 24A to winding direction DR1 winding, produce the capacity cell 5 that is made of 3 capacity cells 5e, 5f, 5g.Be anodizing to partly barrier paper 3f of the Cathode Foil 2a of paper tinsel 24a, long 2L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5e, be anodizing to partly barrier paper 3f of the Cathode Foil 2b of Cathode Foil 2a, long L/3 part of paper tinsel 24b, long L/3 part and long 2L/3, the stage of 3g in winding, produce capacity cell 5f, be anodizing to the Cathode Foil 2b of paper tinsel 24c, remaining long 2L/3 part and the barrier paper 3f of remaining long 2L/3 part, the stage of 3g in winding, produce capacity cell 5g.
Therefore, capacity cell 5e is arranged on interior all sides, and capacity cell 5f is arranged on the outer circumferential side of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Be anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g with 3 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20B by the method identical with the manufacture method of electrolytic capacitor 10.In the making of this electrolytic capacitor 20B, under the situation of using resin-sealed replacement gum filler 16, make easily than gum filler 16, therefore can improve process yield (productivity) owing to resin-sealed.
In addition, in the manufacturing of electrolytic capacitor 20B, 3 be anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g can be from twine top 2A, 3A, 24A does not begin to twine, and is anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g but twine 3 since the central portion of 2 barrier paper 3f, 3g.Like this, by 3 winding methods that are anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g, lead-in wire extraction terminal 6～9,15,17 is made as linearity or other shapes as shown in figure 23.
Among the electrolytic capacitor 20B,, so has capacity C 1 because capacity cell 5e, 5f, 5g are anodizing to paper tinsel with Cathode Foil constitutes by what have length 2L/3 and a width W respectively.In addition, capacity cell 5, have with 3 capacity cell 5e, 5f, identical effect when 5g is together in parallel, so its capacity become 3C1 (=C0), identical with the capacity C 0 of former aluminium wound form solid electrolytic capacitor 100.
So, electrolytic capacitor 20B, though use Cathode Foil 2a, the 2b making that is anodizing to paper tinsel 24a, 24b, 24c and has 1/2nd length of former Cathode Foil 120 of 1/3rd length that are anodizing to paper tinsel 110 before having, its capacity can be not lower than the capacity of former aluminium wound form solid electrolytic capacitor 100 yet, and equivalent serial resistance is 1/3rd of a former aluminium wound form solid electrolytic capacitor 100.
In addition, since electrolytic capacitor 20B will be former the paper tinsel 110 that is anodizing to be divided on winding direction DR1 continuously 3 of setting and be anodizing to paper tinsel 24a, 24b, 24c, former Cathode Foil 120 is divided into 2 Cathode Foil 2a, 2b being provided with continuously makes on winding direction DR1, the diameter of diameter after therefore twining and former aluminium wound form solid electrolytic capacitor 100 about equally.Promptly, can produce the electrolytic capacitor 20B that has reduced equivalent serial resistance, its size can be greater than former aluminium wound form solid electrolytic capacitor 100, and the maintenance capacity yet.
Like this, be anodizing to paper tinsel 24a, 24b, 24c, can produce the electrolytic capacitor 20B that has with 3 capacity cell 5e, 5f, 5g identical effect when in parallel by using 2 Cathode Foil 2a, 2b and 3.
The stereogram of another collocation method that is anodizing to paper tinsel 24a, 24b, 24c, Cathode Foil 2a, 2b and barrier paper when Figure 26 makes electrolytic capacitor 20B shown in Figure 23 for 3 of expression uses are anodizing to paper tinsel 24a, 24b, 24c and 2 Cathode Foil 2a, 2b.
With reference to Figure 26, when using 3 to be anodizing to paper tinsel 24a, 24b, 24c and 2 Cathode Foil 2a, 2b making electrolytic capacitor 20B shown in Figure 23, electrolytic capacitor 20B also has barrier paper 3h except 2 barrier paper 3f, 3g.
If barrier paper 3f, 3g are longer than Cathode Foil 2a, 2b, then can be shorter than barrier paper 3h.Cathode Foil 2a is arranged between barrier paper 3g and the barrier paper 3h, thus through barrier paper 3h be anodizing to paper tinsel 24a, 24b in opposite directions.Cathode Foil 2b is arranged between barrier paper 3f and the barrier paper 3g, thereby through barrier paper 3g, 3h and be anodizing to paper tinsel 24b, 24c in opposite directions.
3 are anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 2 barrier paper 3f, 3g according to state setting shown in Figure 26,3 are anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 3 barrier paper 3f, 3g, 3h and to winding direction DR1 winding, produce the capacity cell 5 that is made of 3 capacity cells 5e, 5f, 5g from winding top 2A, 3A, 24A.Be anodizing to partly barrier paper 3f, 3g of the Cathode Foil 2a of paper tinsel 24a, long 2L/3 part and long 2L/3, the stage of 3h in winding, produce capacity cell 5e, be anodizing to partly barrier paper 3f, 3g of the Cathode Foil 2b of Cathode Foil 2a, long L/3 part of paper tinsel 24b, long L/3 part and long 2L/3, the stage of 3h in winding, produce capacity cell 5f, be anodizing to the Cathode Foil 2b of paper tinsel 24c, remaining long 2L/3 part and barrier paper 3f, the 3g of remaining long 2L/3 part, the stage of 3h in winding, produce capacity cell 5g.
Therefore, capacity cell 5e is arranged on interior all sides, and capacity cell 5f is arranged on the outer circumferential side of capacity cell 5e, and capacity cell 5g is arranged on most peripheral.
Be anodizing to paper tinsel 24a, 24b, 24c, 2 Cathode Foil 2a, 2b and 3 barrier paper 3f, 3g, 3h with 3 and wind up and produce after the capacity cell 5, produce electrolytic capacitor 20B by the method identical with the manufacture method of electrolytic capacitor 10.
In addition, Cathode Foil 2a can be arranged between barrier paper 3f and the barrier paper 3g among Figure 26, thereby through barrier paper 3g, 3h and be anodizing to paper tinsel 24a, 24b in opposite directions, Cathode Foil 2b is arranged between barrier paper 3g and the barrier paper 3h, thus through barrier paper 3h be anodizing to paper tinsel 24b, 24c in opposite directions.
In addition, among Figure 25 and Figure 26,3 be anodizing to paper tinsel 24a, 24b, 24c also can be by state setting shown in Figure 22.In this case, electrolytic capacitor 20B also has 1 barrier paper 3h or 2 barrier paper 3h, 3i.
In addition, among the electrolytic capacitor 20B, lead-in wire is extracted terminal 9 out and can be arranged among the 2C of square end portion of Cathode Foil 2b.
Other are identical with execution mode 1.
In addition, in the above-mentioned execution mode 2, to using 2 to be anodizing to paper tinsel and 1 situation that Cathode Foil is made electrolytic capacitor, use 3 to be anodizing to paper tinsel and 1 situation that Cathode Foil is made electrolytic capacitor, and use 3 situations that are anodizing to paper tinsel and 2 Cathode Foil making electrolytic capacitors to be illustrated, but be not limited in this among the present invention, the electrolytic capacitor of execution mode 2, be anodizing to paper tinsel so long as use i (i is the integer 2 or more) to open, to open the produced electrolytic capacitor of j (j is for satisfying the integer of 1≤j＜i) Cathode Foil being anodizing to paper tinsel just passable with being less than i.
In the above-mentioned execution mode 1, a plurality of situations that are anodizing to paper tinsel and a plurality of Cathode Foil making electrolytic capacitor of using identical number are illustrated, in the execution mode 2, a plurality ofly be anodizing to the situation that paper tinsel and a plurality of Cathode Foil that are less than a plurality of numbers that are anodizing to paper tinsel make electrolytic capacitors and be illustrated using.
Therefore, electrolytic capacitor of the present invention, the Cathode Foil and k (k is the integer 2 or more) the produced electrolytic capacitor of barrier paper that generally can be to use i to open to be anodizing to paper tinsel, j (j is for satisfying the integer of 1≤j＜i) to open.In addition, i opens and is anodizing to the mutual electric insulation of paper tinsel, and j opens Cathode Foil under situation about being made of a plurality of Cathode Foil, mutually electric insulation.
The various aspects of execution mode described herein all only are illustrations.The present invention represents by the scope of claim rather than the explanation of above-mentioned execution mode, also comprises and the meaning of the scope equalization of claim and all changes in the scope thereof.
The present invention be applicable to can the steady decrease equivalent serial resistance electrolytic capacitor.
Claims (13)
1. electrolytic capacitor for comprising electrolytical wound form electrolytic capacitor, is characterized in that having:
The i (i is the integer more than 2) that electric insulation, and surface mutually has dielectric coating film respectively opens anode component;
Open j (j is for satisfying the integer of the 1≤j＜i) cathode assembly that anode component twines with above-mentioned i; And
At least be arranged on that above-mentioned i opens anode component and above-mentioned j opens between the cathode assembly, open anode component and above-mentioned j with above-mentioned i and open the k (k is the integer more than 2) that cathode assembly twines and open isolated part.
2. an electrolytic capacitor is a kind of electrolytical wound form electrolytic capacitor that contains, and it is characterized in that having:
The i (i is the integer more than 2) that electric insulation, and surface mutually has dielectric coating film respectively opens anode component;
Open the i that anode component twines with above-mentioned i and open cathode assembly; And
Be separately positioned between the adjacent anode component and cathode assembly, open anode component and above-mentioned i with above-mentioned i and open the k (k is the integer more than 2) that cathode assembly twines and open isolated part;
Diameter when above-mentioned i opens anode component, above-mentioned i and opens cathode assembly and above-mentioned k and open isolated part and wind up, the diameter of the benchmark electrolytic capacitor that winds up through 1 or 2 barrier papers with 1 anode component and 1 cathode assembly about equally.
3. electrolytic capacitor as claimed in claim 2 is characterized in that:
Above-mentioned i opens anode component, above-mentioned i opens cathode assembly and above-mentioned k opens isolated part, opens cathode assembly and 2n or 2n-1 by n (n is the integer more than 2) anode component, n respectively and opens the isolated part formation;
Each of above-mentioned anode component, above-mentioned cathode assembly and above-mentioned isolated part has the length of summary 1/n of the length of the above-mentioned anode component in the said reference capacitor, above-mentioned cathode assembly and above-mentioned isolated part.
4. electrolytic capacitor as claimed in claim 1 is characterized in that:
Diameter when above-mentioned i opens anode component, above-mentioned j and opens cathode assembly and above-mentioned k and open isolated part and wind up, the diameter of the benchmark electrolytic capacitor that winds up through 1 or 2 barrier papers with 1 anode component and 1 cathode assembly about equally.
5. electrolytic capacitor as claimed in claim 4 is characterized in that:
Said n is opened anode component, said n is opened cathode assembly and above-mentioned 2n or 2n-1 and opened the capacity cell that isolated part is entwined, and is made of n the capacitor that is provided with on the diverse location diametrically.
6. electrolytic capacitor as claimed in claim 1 is characterized in that:
Above-mentioned i opens anode component and above-mentioned j opens cathode assembly, opens an anode component and m (m is for satisfying the integer of a 1≤m＜n) cathode assembly formation by n (n is the integer more than 2) respectively;
Above-mentioned anode component has the length of roughly 1/n of the length of the above-mentioned anode component in the said reference electrolytic capacitor;
Above-mentioned cathode assembly has the length of roughly 1/m of the length of the above-mentioned cathode assembly in the said reference electrolytic capacitor.
7. electrolytic capacitor as claimed in claim 6 is characterized in that:
Said n is opened anode component, above-mentioned m opens cathode assembly and above-mentioned k opens the capacity cell that isolated part is entwined, and is made of n the capacitor that is provided with on the diverse location diametrically.
8. as claim 6 or 7 described electrolytic capacitors, it is characterized in that:
Above-mentioned m opens cathode assembly and is made of 1 cathode assembly.
9. electrolytic capacitor as claimed in claim 1 is characterized in that:
Above-mentioned i opens anode component, above-mentioned j opens cathode assembly and above-mentioned k opens isolated part, the mutually different a plurality of capacitors of formation capacity.
10. as each described electrolytic capacitor in the claim 1～9, it is characterized in that:
Also have to above-mentioned i open anode component, above-mentioned i opens or j opens cathode assembly and above-mentioned k and opens the seal member that capacity cell that isolated part is entwined seals;
Above-mentioned seal member is made of resin.
11., it is characterized in that as each described electrolytic capacitor in the claim 1～10:
Also have to above-mentioned i open anode component, above-mentioned i opens or j opens cathode assembly and above-mentioned k and opens the seal member that capacity cell that isolated part is entwined seals;
Above-mentioned seal member is made of rubber.
12. as each described electrolytic capacitor in the claim 1～11, it is characterized in that,
Also have:
Corresponding above-mentioned i opens the anode component setting, respectively i the anode tap that is connected with the substantial middle portion of above-mentioned corresponding anode component on the length direction of the anode component of correspondence;
Corresponding above-mentioned i opens or j opens the cathode assembly setting, respectively i the cathode leg that is connected with the substantial middle portion of above-mentioned corresponding cathode assembly on the length direction of the cathode assembly of correspondence;
The anode terminal that is connected with an above-mentioned i anode tap; And
The cathode terminal that is connected with an above-mentioned i cathode leg,
The opposing party end of opening the square end portion opposition side that anode component is connected with above-mentioned i of an above-mentioned i anode tap is connected with above-mentioned anode terminal;
The opposing party end of opening the square end portion opposition side that cathode assembly is connected with above-mentioned j of an above-mentioned i cathode leg is connected with above-mentioned cathode terminal.
13., it is characterized in that as each described electrolytic capacitor in the claim 1～12:
Above-mentioned electrolyte is the electroconductive polymer of polythiophene class, polypyrrole class and polyaniline compound, or 7,7,8, the solid electrolyte that constituted of 8-four cyano quinone bismethane complex.
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| JP2006231567A JP4587996B2 (en) | 2005-11-22 | 2006-08-29 | Electrolytic capacitor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576609A (en) * | 2009-09-30 | 2012-07-11 | 三洋电机株式会社 | Electrolytic capacitor |
| US8243421B2 (en) | 2008-02-06 | 2012-08-14 | Sanyo Electric Co., Ltd. | Electrolytic capacitor and method of manufacturing the same |
| CN102683028A (en) * | 2011-03-14 | 2012-09-19 | 三洋电机株式会社 | Method of manufacturing electrolytic capacitor and electrolytic capacitor |
| CN101783244B (en) * | 2008-12-26 | 2013-01-16 | 三洋电机株式会社 | Electrolytic capacitor |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4592792B2 (en) | 2010-12-08 |
| JP2009021629A (en) | 2009-01-29 |
| CN1971785B (en) | 2014-09-17 |
| JP2009010418A (en) | 2009-01-15 |
| JP4592790B2 (en) | 2010-12-08 |
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