CN106409516A - Ultra-thin high-capacity laminated aluminum electrolytic capacitor and preparation method thereof - Google Patents

Ultra-thin high-capacity laminated aluminum electrolytic capacitor and preparation method thereof Download PDF

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Publication number
CN106409516A
CN106409516A CN201610772381.4A CN201610772381A CN106409516A CN 106409516 A CN106409516 A CN 106409516A CN 201610772381 A CN201610772381 A CN 201610772381A CN 106409516 A CN106409516 A CN 106409516A
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China
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acid
series
ammonium
cathode foil
anode
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胡少强
黄家奇
贾明
张超
黎际宇
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Hunan Aihua Group Co Ltd
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Hunan Aihua Group Co Ltd
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Priority to CN201610772381.4A priority Critical patent/CN106409516A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/15—Solid electrolytic capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/022—Electrolytes; Absorbents

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The invention discloses a ultra-thin high-capacity laminated aluminum electrolytic capacitor. The ultra-thin high-capacity laminated aluminum electrolytic capacitor comprises an aluminum plastic film and a core bag; the core bag is sealed in the aluminum plastic film through vacuum plastic package; the core bag comprises anode foils, cathode foils and an electrolytic paper; the anode foil and the cathode foil are respectively clamped at two sides of the electrolytic paper after the electrolytic paper is folded in a Z shape so as to guarantee that one cathode foil is isolated between two anode foils, and one anode foil is isolated between two cathode foils; and the electrolytic paper is isolated between the cathode foil and the anode foil. The ultra-thin high-capacity laminated aluminum electrolytic capacitor adopts a new folding structure, the thickness of the capacitor product is greatly reduced while guaranteeing the high-capacity design requirement of the capacitor, and meanwhile, the product stability is improved.

Description

A kind of ultrathin type Large Copacity stacked aluminum electrolytic capacitor and preparation method thereof
Technical field
The present invention relates to a kind of aluminium electrolutic capacitor, more particularly, to a kind of ultrathin type Large Copacity stacked aluminum electrolytic capacitor And preparation method thereof.
Background technology
Using winding core package more than traditional aluminium electrolutic capacitor, after impregnation, stood using the accessory group such as aluminum hull, rubber stopper Molding.Miniaturization with electronic product and flattening, traditional column type aluminium electrolutic capacitor has no in space availability ratio Advantage but also constrain miniature, the flattening development trend of electronic product.During making string product in Large Copacity, by In the structure using several cell capaciator series connection, so the product thickness worked it out is larger, technique is also more numerous simultaneously Trivial.
Content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide one kind have higher capacity density, Resistance to ripple ability is strong and ultrathin Large Copacity stacked aluminum electrolytic capacitor that have bigger heat dissipation area.
For solving above-mentioned technical problem, technical scheme proposed by the present invention is：A kind of ultrathin type Large Copacity stacked aluminum electricity Electrolysis condenser, including outer shell-and-core bag；Described core bag is sealed in inside the shell；Described core bag includes anode foils, Cathode Foil and electrolysis Paper, described electrolytic paper zigzag fold after by anode foils and Cathode Foil be clipped in respectively electrolytic paper both sides it is ensured that two pieces of anode foils it Between have the isolation of one piece of Cathode Foil, have one piece of anode foils isolation between two pieces of Cathode Foil；Electricity consumption between described Cathode Foil and anode foils Solution paper isolation.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that distinguish in described anode foils and Cathode Foil It is fixed with that anode leads chaff and negative electrode leads chaff, multiple anodes are led chaff ultrasonic welding device and welds together；Described outer Shell is aluminum plastic film, and described core bag is sealed in aluminum plastic film by vacuum plastic sealing.In the present invention, it is capable of no with ultrasonic bonding Contact bonding, prevents the pollution of core bag, and the good operability of ultrasonic bonding, and welding point reliability is high, is not in rosin joint Etc. phenomenon.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that the effective length of described Cathode Foil is single The integral multiple of individual anode foils length, and Cathode Foil carries out zigzag folding with electrolytic paper.The effective length of Cathode Foil is Anode foils face the length of Cathode Foil area, and the physical length of Cathode Foil is the length plus bending for the summation of anode foils length Degree；When cutting, Cathode Foil width is slightly larger than anode foils, and electrolytic paper width is slightly larger than Cathode Foil.In the present invention, by negative electrode Paper tinsel takes full wafer to cut, then by folding, anode foils is clipped in the middle layer, and when folding, Cathode Foil and electrolytic paper can one Rise and fold, electrolytic paper may also be employed the overall mode cutting；So certain fixation can be played to anode foils, and due to Cathode Foil only one is led chaff and is drawn capacity, improves capacitor arrangement, improves capacitor performance.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that described core bag is internal and core bag and aluminum It is formed with gel electrolyte between plastic film；Described gel electrolyte is solution systemAnd solution systemIn initiator Cause and be polymerized the gel macromolecular compound obtaining down；Described solution systemAnd solution systemMixing match be 1:4- 4:1；Described solution systemIncluding 85%-95% polymerized monomer, 2%-20% cross-linking agent and 0.1%-10% initiator, described polymerization list Body is the compound containing double bond or can the acrylic acid that is polymerized of open loop and its derivant；Described initiator includes heat and draws Send out agent or light trigger, described thermal initiator includes one or more of hydrogen peroxide, persulfate and hydroperoxides；Institute State light trigger include photoinitiator184, photoinitiator907, photoinitiator1173, Photoinitiator369 and one or more of diphenylethan.
With unique gel electrolyte in the present invention, therefore the mode of traditional superposition, often paper tinsel all led by a piece of cathode and anode paper tinsel Bar draws capacity, leads to thickness at chaff superposition larger, affects being evenly distributed of internal gel electrolyte when lamination is polymerized Degree, thus affect the electric properties such as the capacity of capacitor, DF, ESR.And in the present invention, Cathode Foil only has a negative electrode lead Chaff, being evenly distributed of gel electrolyte paper.
The thermal initiator that the present invention uses is water solublity, mineral-type, middle warm type, can uniformly be dissolved into the molten of electrolyte In agent, uniform gel state electrolyte can be obtained, effectively prevent other types initiator and be unable to uniform dissolution to electrolyte The partial polymerization bringing in solvent is insufficient, the short-circuit equivalent risk of capacitor internal.Thermal initiator is uniformly distributed in solvent, In the case of heating, thermal initiator itself is decomposed, fracture, forms two initial radical, and trigger monomer free radical is sent out then Raw polyreaction, the ratio of viscosities polymerisation in bulk of the polymerization system obtaining is low, and mixing and radiating are easier, production operation and temperature All easily controllable, the evaporation being also with solvent is to exclude heat of polymerization.
Conventional organic peroxide polymerization initiator（For example：α, α `- azodiisobutyronitrile）Decompose at its own Reaction can produce nitrogen and be solidified with the state in gel internal package bubble, due to bubble while producing free radical Exist it is difficult to obtain uniform gel macromolecule.
In the present invention, thermal initiator molecule contains weak bond, produces two primary group of free radicals by heat resolve, primary free Then trigger monomer produces free radical thus occurring chain initiation reaction polyreaction to occur thus forming gel state to base.As Fig. 1 institute It is shown as the schematic diagram that persulfate initiator heat resolve becomes free radical.
In polymerization process, initiation is divided into the following steps:(1) initiator resolves into initial radical in aqueous phase；(2) initial Free radical is in aqueous phase（Electrolyte even all can have the presence of water in process for preparation after the completion of preparing）Middle initiation is polymerized；(3) Initial radical monomer in aqueous phase is diffused in emulsion particle or in monomer droplet；(4) free radical causes polymerization in emulsion particle, Generate high molecular polymer so that emulsion particle is constantly grown up.
First stage, emulsion particle generated the phase one by one.From starting to cause polymerization, until the micelle that emulsifying agent is formed disappears, gather Close increasing rate.The free radical producing in aqueous phase diffuses in micelle, carries out causing, increases, and constantly forms emulsion particle, simultaneously In aqueous phase, monomer can also cause polymerization, and absorption emulsifier molecules form emulsion particle.With causing proceeding of polymerization, solubilized The continuous nucleation of micelle, emulsion particle is on the increase or is increased, and when monomer conversion 15% about, micelle all disappears, and does not re-form new Emulsion particle, later cause polymerization carry out in latex intragranular completely.
The second stage constant speed phase one by one.After micelle disappears, polymerization enters second stage.Chain causes, increases and terminating reaction Continue to carry out in latex intragranular, drop still plays a part warehouse, constantly supply monomer to emulsion particle.Monomer concentration in emulsion particle Keep constant, add that latex grain number is constant, the rate of polymerization in this stage is also substantially certain.Monomer conversion reaches 50% about, liquid Drip and all disappear, monomer fully enters emulsion particle, starts to proceed to the phase III.
The reduction of speed phase one by one phase III.Latex intragranular is made up of monomer and polymer two parts, and the free radical in water is permissible Continue to diffuse into emulsion particle to cause or terminate, but monomer no supplements source again, rate of polymerization is by with latex intragranular monomer concentration Reduce and reduce, until polymerization completes.
Light trigger is a class in ultraviolet region（250-420nm）Or visible region（400-800nm）Absorb the energy of certain wavelength Amount, produces free radical, cation etc. thus the compound of trigger monomer polymerization crosslinking solidification
The present invention uses the crack type photoinitiator in radical polymerization light trigger, and that is, initiator molecule absorbs luminous energy Afterwards, transit to excited singlet, through being between alter jump arrive excited triplet state, in its excited singlet or triplet state, molecular structure is in Labile state, wherein weak bond can occur homolysis to produce primary activity free radical, cause polymerization.Photoinitiator molecules absorb luminous energy Afterwards, excited state molecule is become by ground state and Norrish Ι reaction occurs, covalent bond between carbonyl and adjacent carbon atom elongates, weak Change, rupture, generate primary group of free radicals.
X-Y -------(X…Y)`-------X`+Y`
Primary group of free radicals is discharged thus trigger monomer occurs radical chain polyreaction after the wavelength of light trigger absorption UV lamp, Living radical and unsaturated functional group react when forming new molecular structure, and central carbon atom can form tertiary carbon free radical, It can make the cross-linked structure that original additive reaction is inversely carried out or polymer pyrolysis are original, during regeneration one with carbon atom is The free radical of the heart, you can inverse addition, addition product fracture and chain transfer reaction.Whole process class is all that a double bond is opened and separately The generation of one double bond, is making the functional group of cross-linking agent and resinous polymer cross linked chain occur freely by adding cross-linking agent The polyreaction of base mediation, promotes the cross linked chain of derivatized polymers to rearrange so that original polymerization shrinkage stress obtains To discharge, and react and occur during whole polyreaction, thus obtaining that crosslink density is moderate, good mechanical properties solidifying Colloidal electrolyte.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor it is preferred that described monomer include acrylic acid, polyacrylic acid, One or more of acrylic acid methyl ester., Isobutyl 2-propenoate and ethyl methacrylate.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor it is preferred that described cross-linking agent include methacrylic acid- 2- Octyl Nitrite, one kind of methacrylic acid -2- hydroxy methacrylate, methacrylic acid -2- hydroxy propyl ester and methyl methacrylate Or it is multiple.Cross-linking agent is the comonomer of gel state electrolyte, can control, by the change of addition, the polymerizate obtaining Character, viscosity, hardness.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that described solution systemFor light-initiated series Or thermal initiation series；Described thermal initiation series includes the thermal initiation series main solvent of 45%-65%, the thermal initiation series of 15%-25% Secondary solvent, the main solute of thermal initiation series of 8-25%, the thermal initiation series pair solute of 2%-5% and the thermal initiation system of 0.5%-3% Row additive；Described thermal initiation series main solvent can be ethylene glycol, the serial secondary solvent of described thermal initiation include water, glycerol, One or more of glycerol, propylene glycol and BDO；The main solute of described thermal initiation series include succinic acid, 1,3-propanedicarboxylic acid, Adipic acid, ammonium adipate, ammonium octanedioic acid, ammonium azelate, ammonium sebacate, 1,7- ammonium sebacate, isosebacic acid ammonium, alkyl decanedioic acid Ammonium, dodecandioic acid ammonium, one or more of 2- hexyl adipic acid；Described thermal initiation series pair solute include boric acid, polyvinyl alcohol, Polyethylene Glycol, butylphosphoric acid ester, phosphoric acid mono-n-butylester, ammonium pentaborate, phthalic acid, terephthalic acids, one or more of citric acid, pass through Add secondary solute to improve the electrical conductivity of electrolyte；Described thermal initiation series additive includes nitro compound, including to nitro Phenol, onitrophenol, meta-dinitro-benzent, paranitroanisole or p nitrobenzyl alcohol, one or more of ammonium hypophosphite.
It is stable that the main solvent of the thermal initiation series of the present invention possesses following feature 1, physical and chemical performance；2nd, have relatively low Freezing point and higher boiling point；3rd, there is higher dissolubility to selected solute or additive；4th, there is corruption in discord aluminium foil The chemical reactions such as erosion；5th, relative low price.
Main solvent is often difficult to have both above-mentioned performance simultaneously, needs to add secondary solvent to improve correlated performance, the present invention Middle selection dielectric constant is larger, the excellent secondary solvent of high temperature performance, on the one hand can improve main solvent property at high and low temperature, separately On the one hand, two kinds of different solvents systems interact, and are conducive to improving solvation, increase dissolubility and the ionization of solute Degree.
In thermal initiation series, auxiliary additive includes waterproof mixture and disappear hydrogen agent, wherein waterproof mixture, such as：Ammonium hypophosphite Can suppress alumite that hydration occurs, extend capacitor service life, disappear hydrogen agent, such as：To paranitrophenol, adjacent nitro Phenol, meta-dinitro-benzent, paranitroanisole can Electolyte-absorptive repair oxide-film during negative electrode produce hydrogen, from And it is prevented effectively from the undesirable conditions such as the prominent, valve opening in capacitor bottom.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that described light-initiated series includes the light of 65%-80% Cause range of solvents, the light-initiated serial main solute of 8%-25%, the light-initiated series pair solute of 2%-20% and the light of 0.5%-10% Cause Series P H regulator, described light-initiated range of solvents includes one kind of alcohols solvent, esters solvent and ether solvent or many Kind, described light-initiated serial main solute includes suberic acid, decanedioic acid, Azelaic Acid, 1,6- decane dicarboxylic acid, maleic acid ammonium, Malaysia Sour hydrogen ammonium and one or more of ammonium benzoate；Described light-initiated series pair solute include ethanedioic acid, malonic acid, adipic acid, oneself One or more of diacid ammonium, salicylic acid, ammonium salicylate, glutamic acid and L-Glutamine, improves electrolysis by adding secondary solute The electrical conductivity of liquid；Described light-initiated Series P H regulator includes one kind of ethylenediamine, triethylamine, triethanolamine and phytic acid or many Kind.
Above-mentioned ultrathin Large Copacity stacked aluminum electrolytic capacitor is it is preferred that described alcohols solvent includes ethylene glycol, just One or more of butanol, glycerol, diglycol, Polyethylene Glycol, polyvinyl alcohol and diethylene glycol；Described esters solvent bag Include one or more of gamma-butyrolacton, δ-valerolactone, Allyl carbonate and Ethyl methyl carbonate；Described ether solvent includes second two One or more of alcohol methyl ether, ethylene glycol, diethylene glycol monobutyl ether, glycol dimethyl ether and n-butyl ether.
A kind of preparation method of ultrathin type Large Copacity stacked aluminum electrolytic capacitor, comprises the following steps, 1）Electricity container Up- coiler, continuously will lead chaff punching press nail riveting in Cathode Foil and anode foils；2）Using the instrument that cuts by Cathode Foil, anode foils Cut to pre-set dimension with electrolytic paper；It is anode with a distance from anode foils one side that the anode in anode foils cutting out leads chaff The 1/4 of paper tinsel width；
3）Fold and fix, Cathode Foil is folded, and anode foils are clipped in the middle layer thus forming core bag it is ensured that two pieces of sun There is one piece of Cathode Foil isolation between the paper tinsel of pole, between two pieces of Cathode Foil, have one piece of anode foils isolation；Described Cathode Foil and anode foils it Between isolated with electrolytic paper；
4）Prepare solution systemAnd solution system, and by solution systemAnd solution systemAccording to 1:4-4:1 ratio is stirred Mix mix homogeneously, mixing time is 10-30 minute；
4.1）Described solution systemPreparation include light-initiated series preparation and thermal initiation series preparation, described thermal initiation The compound method of series is that main solvent and secondary solvent are mixed and heated 90-120 degree Celsius, adds main solute and pair molten Matter, is incubated 30-60 minute at a temperature of 110-140 degree Celsius, is cooled to 100 degrees Celsius of addition additives, and is cooled to room Temperature；Described light-initiated serial being formulated as selected solvent Hybrid Heating to 90-120 degree Celsius, the selected master of addition Solute and secondary solute, are incubated 30-60 minute at 110-140 degree Celsius, after being cooled to 100 degrees Celsius, add additive, and cold But to room temperature；
4.2）Described solution systemBe formulated as selected monomer and cross-linking agent are added sequentially in liquid pool, mixing is stirred After mixing uniformly, add initiator, stir 30-50 minute；
5）With vacuum impregnation method by step 3）In core comprise soak solution systemAnd solution systemMixed solution；
6）It is to be solidified in 65 DEG C ~ 105 DEG C of baking oven under the irradiation of UV lamp or in temperature, when described oven for curing Between be 20 minutes -4 hours；The irradiation time of described UV lamp is 5 seconds -5 minutes；
7）By step 6）The anode that SMIS is wrapped is led chaff ultrasonic welding device and is welded together；
8）With vacuum plastic sealing machine by step 7）In core bag vacuum sealing in inside the shell.
Compared with prior art, it is an advantage of the current invention that：The ultrathin Large Copacity stacked aluminum electrolytic electric capacity of the present invention Device adopts new foldable structure it is ensured that while capacitor high-capacity design requirement, greatly reducing the thickness of capacitor product Degree, also improves the stability of product simultaneously.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to required use in embodiment description Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 is the schematic diagram that in the present invention, persulfate initiator heat resolve becomes free radical.
Fig. 2 is the schematic diagram of foldable structure in the present invention.
1st, anode foils；2nd, Cathode Foil；3rd, anode foils sliver；4th, Cathode Foil sliver；5th, electrolytic paper.
Specific embodiment
For the ease of understanding the present invention, below in conjunction with preferred embodiment, the present invention is made more comprehensively, meticulously to describe, But protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another When on element, it can be directly fix, affixed, connect or connection is on another element or by connecting in the middle of other Fitting is indirectly fixing, affixed, connect or connection is on another element.
Unless otherwise defined, the implication that all technical term used hereinafter is generally understood that with those skilled in the art Identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the present invention Protection domain.
Embodiment
A kind of ultrathin type Large Copacity stacked aluminum electrolytic capacitor, including outer shell-and-core bag；Core bag is sealed in inside the shell；Core Include anode foils 1, Cathode Foil 2 and electrolytic paper 5, anode foils 1 and Cathode Foil 2 are clipped in electricity after folding by electrolytic paper 5Z font respectively , it is ensured that there being one piece of Cathode Foil 2 to isolate between two pieces of anode foils 1, there is one piece of anode foils 1 on the both sides of solution paper 5 between two pieces of Cathode Foil 2 Isolation；Isolated with electrolytic paper between Cathode Foil 2 and anode foils 1.
In the present invention, anode foils 1 and Cathode Foil 2 are respectively fixed with anode leads chaff 3 and negative electrode leads chaff 4, will be multiple Anode is led chaff 3 and is welded together with ultrasonic welding device；Shell is aluminum plastic film, and core bag passes through vacuum plastic sealing in aluminum plastic film.
In the present invention, the effective length of Cathode Foil 2 is the integral multiple of Sole anode paper tinsel 1 length, and Cathode Foil 2 is with electrolysis Paper 5 folds together.In other embodiments, Cathode Foil 2 and anode foils 1 can be similar sizes, the concrete behaviour that core bag is formed It is first electrolytic paper to be carried out zigzag folding as method, then Cathode Foil and anode foils are inserted the both sides of electrolytic paper.
In the present invention, between core bag inside and core bag and aluminum plastic film, it is formed with gel electrolyte；Gel electrolyte For solution systemAnd solution systemIt is polymerized the gel macromolecular compound obtaining under the initiation of initiator；Solution system And solution systemMixing match be 1:4-4:1；Solution systemIncluding 85%-95% polymerized monomer, 2%-20% cross-linking agent and 0.1%-10% initiator, polymerized monomer is the compound containing double bond or can the acrylic acid that is polymerized of open loop and its derivative Thing；Initiator includes thermal initiator or light trigger, and thermal initiator includes hydrogen peroxide, persulfate and hydroperoxides One or more；Light trigger include photoinitiator184, photoinitiator907, Photoinitiator1173, photoinitiator369 and one or more of diphenylethan.
In the present invention, monomer includes acrylic acid, polyacrylic acid, acrylic acid methyl ester., Isobutyl 2-propenoate and methacrylic acid One or more of ethyl ester.
In the present invention, cross-linking agent includes methacrylic acid -2- Octyl Nitrite, methacrylic acid -2- hydroxy methacrylate, methyl-prop Olefin(e) acid -2- hydroxy propyl ester and one or more of methyl methacrylate.
In the present invention, solution systemFor light-initiated series or thermal initiation series；Thermal initiation series includes the heat of 45%-65% Cause serial main solvent, the thermal initiation series secondary solvent of 15%-25%, the main solute of thermal initiation series of 8-25%, the heat of 2%-5% Cause the thermal initiation series additive of series pair solute and 0.5%-3%；Thermal initiation series main solvent can be ethylene glycol, and heat is drawn Send out one or more that serial secondary solvent includes water, glycerol, glycerol, propylene glycol and BDO；Thermal initiation series is main Solute includes succinic acid, 1,3-propanedicarboxylic acid, adipic acid, ammonium adipate, ammonium octanedioic acid, ammonium azelate, ammonium sebacate, 1,7- decanedioic acid Ammonium, isosebacic acid ammonium, alkyl ammonium sebacate, dodecandioic acid ammonium, one or more of 2- hexyl adipic acid；Thermal initiation series is secondary molten Matter includes boric acid, polyvinyl alcohol, Polyethylene Glycol, butylphosphoric acid ester, phosphoric acid mono-n-butylester, ammonium pentaborate, phthalic acid, terephthalic acids, lemon One or more of lemon acid；Thermal initiation series additive includes nitro compound, including paranitrophenol, onitrophenol, Dinitro benzene, paranitroanisole or p nitrobenzyl alcohol, one or more of ammonium hypophosphite.
In the present invention, the light-initiated range of solvents of light-initiated series inclusion 65%-80%, the light-initiated series master of 8%-25% are molten Matter, the light-initiated series pair solute of 2%-20% and the light-initiated Series P H regulator of 0.5%-10%, light-initiated range of solvents includes One or more of alcohols solvent, esters solvent and ether solvent, light-initiated serial main solute includes suberic acid, decanedioic acid, nonyl One or more of diacid, 1,6- decane dicarboxylic acid, maleic acid ammonium, maleic acid hydrogen ammonium and ammonium benzoate；Light-initiated series is secondary molten Matter include ethanedioic acid, malonic acid, adipic acid, ammonium adipate, salicylic acid, ammonium salicylate, glutamic acid and L-Glutamine one kind or Multiple；Light-initiated Series P H regulator includes one or more of ethylenediamine, triethylamine, triethanolamine and phytic acid.
In the present invention, alcohols solvent includes ethylene glycol, n-butyl alcohol, glycerol, diglycol, Polyethylene Glycol, poly- second Enol and one or more of diethylene glycol；Esters solvent includes gamma-butyrolacton, δ-valerolactone, Allyl carbonate and methyl ethyl carbonate One or more of ester；Ether solvent include ethylene glycol monomethyl ether, ethylene glycol, diethylene glycol monobutyl ether, glycol dimethyl ether and One or more of n-butyl ether.
In the present invention, a kind of preparation method of ultrathin type Large Copacity stacked aluminum electrolytic capacitor, comprise the following steps, 1） Electricity container up- coiler, continuously will lead chaff punching press nail riveting in Cathode Foil and anode foils；2）Using the instrument that cuts by negative electrode Paper tinsel, anode foils and electrolytic paper cut to pre-set dimension；The anode in anode foils cutting out leads chaff from anode foils one side Distance is the 1/4 of anode foils width；
3）Fold and fix, Cathode Foil is folded, and anode foils are clipped in the middle layer thus forming core bag it is ensured that two pieces of sun There is one piece of Cathode Foil isolation between the paper tinsel of pole, between two pieces of Cathode Foil, have one piece of anode foils isolation；Use between Cathode Foil and anode foils Electrolytic paper is isolated；
4）Prepare solution systemAnd solution system, and by solution systemAnd solution systemAccording to 1:4-4:1 ratio is stirred Mix mix homogeneously, mixing time is 10-30 minute；
4.1）Solution systemPreparation include light-initiated series preparation and thermal initiation series preparation, thermal initiation series join Method processed is that main solvent and secondary solvent are mixed and heated 90-120 degree Celsius, adds main solute and secondary solute, in 110- It is incubated 30-60 minute at a temperature of 140 degrees Celsius, be cooled to 100 degrees Celsius of addition additives, and be cooled to room temperature；Light-initiated Being formulated as selected solvent Hybrid Heating to 90-120 degree Celsius of series, adds selected main solute and secondary solute, It is incubated 30-60 minute at 110-140 degree Celsius, after being cooled to 100 degrees Celsius, add additive, and be cooled to room temperature；
4.2）Solution systemBe formulated as selected monomer and cross-linking agent are added sequentially in liquid pool, mix and blend is equal After even, add initiator, stir 30-50 minute；
5）With vacuum impregnation method by step 3）In core comprise soak solution systemAnd solution systemMixed solution；
6）It is to be solidified in 65 DEG C ~ 105 DEG C of baking oven under the irradiation of UV lamp or in temperature, the oven for curing time is 20 minutes -4 hours；The irradiation time of UV lamp is 5 seconds -5 minutes；
7）By step 6）The anode that SMIS is wrapped is led chaff ultrasonic welding device and is welded together；
8）With vacuum plastic sealing machine by step 7）In core bag vacuum sealing in periostracum.
Embodiment 1
Solution system
Composition Mass percent
Ethylene glycol 60%
Water 10%
Glycerol 15%
Sorbitol 5%
Ammonium pentaborate 10%
Dicyandiamide solution
Composition Mass percent
Acrylic acid 85%
Methacrylate 10%
Ammonium persulfate. 5%
80 DEG C -105 DEG C of heat curing temperature, thermal curing time 30min-2h.
Embodiment 2
Dicyandiamide solution
Composition Mass percent
Ethylene glycol 60%
Water 15%
Glycerol 15%
Ammonium benzoate 5%
Ammonium salicylate 5%
Dicyandiamide solution
Composition Mass percent
Acrylic acid 85%
Methacrylate 10%
photoinitiator1173 5%
Photocuring wavelength 300nm, cure times 30s-15min.

Claims (10)

1. a kind of ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Including outer shell-and-core bag；Described core Bao Mi It is enclosed in inside the shell；Described core bag includes anode foils, Cathode Foil and electrolytic paper, described electrolytic paper zigzag fold after by anode foils and Cathode Foil is clipped in the both sides of electrolytic paper respectively it is ensured that having one piece of Cathode Foil isolation between two pieces of anode foils, between two pieces of Cathode Foil There is one piece of anode foils isolation；Isolated with electrolytic paper between described Cathode Foil and anode foils.
2. according to claim 1 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described anode foils Anode leads chaff and negative electrode leads chaff with being respectively fixed with Cathode Foil, multiple anodes is led chaff ultrasonic welding device and welds Together；Described shell is aluminum plastic film, and described core bag is sealed in aluminum plastic film by vacuum plastic sealing.
3. according to claim 1 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described Cathode Foil Effective length be Sole anode paper tinsel length integral multiple, and Cathode Foil carries out zigzag folding with electrolytic paper.
4. according to claim 1 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：In described core bag It is formed with gel electrolyte between portion and core bag and aluminum plastic film；Described gel electrolyte is solution systemAnd solution body SystemIt is polymerized the gel macromolecular compound obtaining under the initiation of initiator；Described solution systemAnd solution systemMixed Closing proportioning is 1:4-4:1；Described solution systemCause including 85%-95% polymerized monomer, 2%-20% cross-linking agent and 0.1%-10% Agent, described polymerized monomer is the compound containing double bond or can the acrylic acid that is polymerized of open loop and its derivant；Described Initiator includes thermal initiator or light trigger, and described thermal initiator includes hydrogen peroxide, persulfate and hydroperoxides One or more；Described light trigger include photoinitiator184, photoinitiator907, Photoinitiator1173, photoinitiator369 and one or more of diphenylethan.
5. according to claim 4 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described monomer bag Include one or more of acrylic acid, polyacrylic acid, acrylic acid methyl ester., Isobutyl 2-propenoate and ethyl methacrylate.
6. according to claim 4 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described cross-linking agent Including methacrylic acid -2- Octyl Nitrite, methacrylic acid -2- hydroxy methacrylate, methacrylic acid -2- hydroxy propyl ester and methyl-prop One or more of e pioic acid methyl ester.
7. according to claim 4 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described solution body SystemFor light-initiated series or thermal initiation series；Described thermal initiation series includes the thermal initiation series main solvent of 45%-65%, 15%- 25% thermal initiation series secondary solvent, the thermal initiation main solute of series of 8-25%, the thermal initiation series pair solute of 2%-5% and The thermal initiation series additive of 0.5%-3%；Described thermal initiation series main solvent can be ethylene glycol, described thermal initiation series auxiliary Solvent includes one or more of water, glycerol, glycerol, propylene glycol and BDO；The serial main solute bag of described thermal initiation Include succinic acid, 1,3-propanedicarboxylic acid, adipic acid, ammonium adipate, ammonium octanedioic acid, ammonium azelate, ammonium sebacate, 1,7- ammonium sebacate, isodecyl Diacid ammonium, alkyl ammonium sebacate, dodecandioic acid ammonium, one or more of 2- hexyl adipic acid；Described thermal initiation series pair solute Including boric acid, polyvinyl alcohol, Polyethylene Glycol, butylphosphoric acid ester, phosphoric acid mono-n-butylester, ammonium pentaborate, phthalic acid, terephthalic acids, Fructus Citri Limoniae One or more of acid；Described thermal initiation series additive includes nitro compound, including paranitrophenol, onitrophenol, Meta-dinitro-benzent, paranitroanisole or p nitrobenzyl alcohol, one or more of ammonium hypophosphite.
8. according to claim 4 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described light-initiated The light-initiated range of solvents of series inclusion 65%-80%, the light-initiated serial main solute of 8%-25%, the light-initiated series pair of 2%-20% Solute and the light-initiated Series P H regulator of 0.5%-10%, described light-initiated range of solvents include alcohols solvent, esters solvent and One or more of ether solvent, described light-initiated serial main solute includes suberic acid, decanedioic acid, Azelaic Acid, 1,6- decane two One or more of carboxylic acid, maleic acid ammonium, maleic acid hydrogen ammonium and ammonium benzoate；Described light-initiated series pair solute includes second two One or more of acid, malonic acid, adipic acid, ammonium adipate, salicylic acid, ammonium salicylate, glutamic acid and L-Glutamine；Described light Initiation Series P H regulator includes one or more of ethylenediamine, triethylamine, triethanolamine and phytic acid.
9. according to claim 8 ultrathin type Large Copacity stacked aluminum electrolytic capacitor it is characterised in that：Described alcohols is molten Agent includes one kind of ethylene glycol, n-butyl alcohol, glycerol, diglycol, Polyethylene Glycol, polyvinyl alcohol and diethylene glycol or many Kind；Described esters solvent includes one or more of gamma-butyrolacton, δ-valerolactone, Allyl carbonate and Ethyl methyl carbonate；Described Ether solvent includes one kind of ethylene glycol monomethyl ether, ethylene glycol, diethylene glycol monobutyl ether, glycol dimethyl ether and n-butyl ether or many Kind.
10. the preparation method of the ultrathin Large Copacity stacked aluminum electrolytic capacitor as described in a kind of any one as claim 1-9, It is characterized in that：Comprise the following steps, 1）Electricity container up- coiler, continuously will lead chaff punching press nail riveting to Cathode Foil and anode On paper tinsel；2）Using the instrument that cuts, Cathode Foil, anode foils and electrolytic paper are cut to pre-set dimension；In the anode foils cutting out It is the 1/4 of anode foils width with a distance from anode foils one side that anode leads chaff；
3）Fold and fix, Cathode Foil is folded, and anode foils are clipped in the middle layer thus forming core bag it is ensured that two pieces of sun There is one piece of Cathode Foil isolation between the paper tinsel of pole, between two pieces of Cathode Foil, have one piece of anode foils isolation；Described Cathode Foil and anode foils it Between isolated with electrolytic paper；
4）Prepare solution systemAnd solution system, and by solution systemAnd solution systemAccording to 1:4-4:1 ratio stirring Mix homogeneously, mixing time is 10-30 minute；
4.1）Described solution systemPreparation include light-initiated series preparation and thermal initiation series preparation, described thermal initiation The compound method of series is that main solvent and secondary solvent are mixed and heated 90-120 degree Celsius, adds main solute and pair molten Matter, is incubated 30-60 minute at a temperature of 110-140 degree Celsius, is cooled to 100 degrees Celsius of addition additives, and is cooled to room Temperature；Described light-initiated serial being formulated as selected solvent Hybrid Heating to 90-120 degree Celsius, the selected master of addition Solute and secondary solute, are incubated 30-60 minute at 110-140 degree Celsius, after being cooled to 100 degrees Celsius, add additive, and cold But to room temperature；
4.2）Described solution systemBe formulated as selected monomer and cross-linking agent are added sequentially in liquid pool, mixing is stirred After mixing uniformly, add initiator, stir 30-50 minute；
5）With vacuum impregnation method by step 3）In core comprise soak solution systemAnd solution systemMixed solution；
6）It is to be solidified in 65 DEG C ~ 105 DEG C of baking oven under the irradiation of UV lamp or in temperature, when described oven for curing Between be 20 minutes -4 hours；The irradiation time of described UV lamp is 5 seconds -5 minutes；
7）By step 6）The anode that SMIS is wrapped is led chaff ultrasonic welding device and is welded together；
8）With vacuum plastic sealing machine by step 7）In core bag vacuum sealing in inside the shell.
CN201610772381.4A 2016-08-31 2016-08-31 Ultra-thin high-capacity laminated aluminum electrolytic capacitor and preparation method thereof Pending CN106409516A (en)

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CN106981366A (en) * 2017-05-05 2017-07-25 湖南艾华集团股份有限公司 Gel electrolyte, production method and the forming method wrapped in core of doped carbon
CN108183029A (en) * 2017-12-01 2018-06-19 上海永铭电子有限公司 A kind of alminium electrolytic condenser
CN108257787A (en) * 2017-12-12 2018-07-06 湖南艾华集团股份有限公司 Low-loss square electric container

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CN1330107A (en) * 2001-07-12 2002-01-09 复旦大学 Optically triggered polymerization process for preparing electrolyte film of gel-state lithium ion polymer
CN101887803A (en) * 2010-06-23 2010-11-17 东莞万利信新材料元件有限公司 Ultrahigh pressure large-scale aluminum electrolytic capacitor and driving electrolyte thereof
CN103489643A (en) * 2012-06-11 2014-01-01 国益电容器股份有限公司 Flat electrolytic capacitor and manufacturing method thereof

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CN1317512A (en) * 2001-05-25 2001-10-17 复旦大学 Process for preparing gel-state lithium ion polymer as electrolyte and bettery
CN1330107A (en) * 2001-07-12 2002-01-09 复旦大学 Optically triggered polymerization process for preparing electrolyte film of gel-state lithium ion polymer
CN101887803A (en) * 2010-06-23 2010-11-17 东莞万利信新材料元件有限公司 Ultrahigh pressure large-scale aluminum electrolytic capacitor and driving electrolyte thereof
CN103489643A (en) * 2012-06-11 2014-01-01 国益电容器股份有限公司 Flat electrolytic capacitor and manufacturing method thereof

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* Cited by examiner, † Cited by third party
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CN106981366A (en) * 2017-05-05 2017-07-25 湖南艾华集团股份有限公司 Gel electrolyte, production method and the forming method wrapped in core of doped carbon
CN108183029A (en) * 2017-12-01 2018-06-19 上海永铭电子有限公司 A kind of alminium electrolytic condenser
CN108257787A (en) * 2017-12-12 2018-07-06 湖南艾华集团股份有限公司 Low-loss square electric container

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