CN102034609A - Method and device for aging aluminum electrolytic capacitors in batches - Google Patents
Method and device for aging aluminum electrolytic capacitors in batches Download PDFInfo
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- CN102034609A CN102034609A CN2009101967586A CN200910196758A CN102034609A CN 102034609 A CN102034609 A CN 102034609A CN 2009101967586 A CN2009101967586 A CN 2009101967586A CN 200910196758 A CN200910196758 A CN 200910196758A CN 102034609 A CN102034609 A CN 102034609A
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Abstract
The invention provides a method and a device for aging aluminum electrolytic capacitors in batches. The method comprises the following steps: the capacitors are connected in series with a constant current control loop, and are connected in parallel to an aging power supply. The device for aging the aluminum electrolytic capacitors in batches comprises a clamp main body, wherein a plurality of clamp hole pairs are formed on the clamp main body; each pair of the clamp holes is in accordance with pins of the positive pole and the negative pole of the capacitor; and an aging unit formed by connecting each clamp hole pair in series with the constant current control loop, and the aging units are connected in parallel. In the aging process, the aging current density of each capacitor can be accurately controlled respectively, the electrolyte consumption inside the capacitor in the aging process is reduced to minimum, and the gas producing quantity is reduced to minimum.
Description
Technical field
The present invention relates to the preparation field of electrochemical capacitor, method and device that specifically a kind of alminium electrolytic condenser is aging in batches.
Background technology
In general, electrolytic capacitor is to be made of positive pole (+), the negative pole (-) that does not pass through chemical synthesis, electrolyte and electrolyte with dielectric oxide film (generating through chemical synthesis).In the process of making electrolytic capacitor, technologies such as cutting, clot are arranged.These technologies tend to the dielectric oxide film in anodal (+) (generating through chemical synthesis) is brought damage, cause the leakage current of capacitor to increase greatly.
In order to solve the problem of the insulating oxide membrane damage that produces in manufacture process, the capacitor that assembling is finished carries out other one procedure.On the positive pole of capacitor, connect (+) power supply, on negative pole, connect (-) power supply, apply overproof electricity, carry out chemical synthesis again and handle, repair the dielectric oxide film on anodal (+) aluminium foil.Above-mentioned technology is called aging, and through such aging technique, the performance of capacitor reaches normal level.
Aging technique in the past, as shown in Figure 7.Aging power supply directly is connected on the positive pole and negative pole of capacitor, and directly power supply up to the voltage that reaches setting, is repaired damaged dielectric oxide film.During batch process, just these capacitors are together in parallel and apply electric current, total electricity is very big, the uncontrollable magnitude of current that is fed to each capacitor, and this is the shortcoming of old technology.Also have, during batch process, because the magnitude of current is very big, strengthened gas generatedly, the capacitor internal pressure increases, and causes phenomenons such as capacitor heating, explosion, distortion and the lost of life, and burst rate, defective products rate increase greatly.People adopt manually aging mode sometimes in order to address this problem, and the magnitude of current that needs is little, but need long-time aging.Utilize above-mentioned these methods to carry out electrolytic capacitor and wear out, productivity is low, and rate of finished products is low, and this is a long-standing problem.
In order to address the above problem, also used method as shown in Figure 8 in the past, just give fixed resistance on each capacitors in series, use the fixed resistance Control current.This method aspect Control current, still has its limitation.Centering, when high-voltage electrolysis capacitor wears out, it is very big to be applied to ohmically voltage, the caloric value of resistance own strengthens, and is easy to cause the breakage of fixed resistance.In order to prevent the breakage of fixed resistance, need to use big power resistance.In the batch process of reality, use big power resistance, make aging clamp, not that part is easy to thing, this is the shortcoming of this method.With series connection or mode in parallel, connect resistance for each capacitor, apply electric current, carry out burin-in process, this mode is difficult to accurately control by the electric current of each capacitor, the explosion that in the control ageing process, takes place and gas generated aspect its limitation is arranged.
Above-mentioned this being connected and fixed with series connection or mode in parallel on the mode that resistance carries out burin-in process, the fixed resistance of use is very big.For the automation of aging technique, need to make utensil, tend to run into various troubles.In the former aging automation process, each fixed resistance is joined anchor clamps, adopts the mode of series connection to connect, and a plurality of capacitors are connected on the anchor clamps in parallel.The automatic aging machine of Zhi Zuoing was exactly this appearance in the past.
In above-mentioned this technology, a plurality of capacitors are connected on the same anchor clamps in parallel.If a capacitor short-circuit, so, other capacitor that is connected in parallel on the same anchor clamps also can not get chemical synthesis again.This phenomenon is to cause rate of finished products to reduce and the low reason of productivity.
Uncontrollable aging electric current by each capacitor also is one of reason that causes above-mentioned phenomenon, in order to remedy these shortcomings, all join a PTC (thermistor) to each capacitor on the anchor clamps, mode with series connection connects, and as shown in Figure 9, this way was also used.
In this technology, if be connected in parallel on certain capacitor short-circuit on the same anchor clamps, the electric current that is applied on these anchor clamps can all be applied on this capacitor that is short-circuited, and the PTC with this capacitors in series will generate heat simultaneously.Along with the increase of PTC internal temperature, the PTC internal resistance also can strengthen, and so just can reduce the electric current by this capacitor, and other capacitor can not be affected yet.Utilize this technology to wear out, just the partition capacitance device is scrapped, and aspect the raising rate of finished products certain effect is being arranged, but, in this mode,, need huge current density in order to start PTC.After PTC starts, will produce the leakage current of about 2～5mA, mass-produce not aging fully goods.The defective products amount that due to leakage current produces is high, needs to improve greatly the ability of screening defective products, and this also is a problem that can not be ignored.
Above-mentioned this aging technique also has following problem.Need to use excessive charging current, cause the goods inner heat, quicken the inner electrolytical consumption of goods, increase by electrochemistry oxidation, reduction reaction cause gas generated, cause the goods internal pressure to increase, shorten product life.In this ageing process, by what Control current density? control by the ratio of adjusting aging power source voltage and fixed resistance, but this control method has its limitation.When aging voltage acquires a certain degree, Control current more just, problem has been come again like this, and this also is one of high reason of burst rate in ageing process.
Summary of the invention
Purpose of the present invention is for providing a kind of in ageing process, exactly the aging current density by each capacitor is controlled respectively, capacitor electrolyte inside consumption in the ageing process is reduced to bottom line, the gas generated aging in batches method of MIN alminium electrolytic condenser that is reduced to.
The technical scheme that realizes the foregoing invention purpose is as follows:
The method that alminium electrolytic condenser is aging in batches behind the certain current control loop of each capacitances in series, is connected in parallel to aging power supply.
Describedly decide current control loop and be: a transistorized emitter connects a resistance, this resistance is connected to the negative pole of certain Current Control power supply, described transistorized base stage connects a diode, this diode is connected to the described positive pole of deciding the Current Control power supply, and described transistorized collector series connection is in the negative pole of electric capacity.
The positive pole of described each electric capacity diode of also connecting.
Be connected in series a thermistor between the negative pole of described electric capacity and the transistorized collector electrode.
Another object of the present invention is for providing a kind of alminium electrolytic condenser aging in batches device, and its technical scheme is as follows:
The device that alminium electrolytic condenser is aging in batches comprises a jig main body, has plural number on this jig main body to folder hole, the pin of the positive and negative electrode of every pair of corresponding electric capacity of folder hole, every pair of folder hole is connected behind certain current control loop, forms an aging unit, and each aging unit is connected in parallel.
Describedly decide current control loop and be: a transistorized emitter connects a resistance, and this resistance is connected to the negative pole of certain Current Control power supply, and described transistorized base stage connects a diode, and this diode is connected to the described positive pole of deciding the Current Control power supply; Described transistorized collector series connection is in the folder hole of the negative pole pin of electric capacity.
The folder hole of the anodal pin of described each electric capacity diode of also connecting.
Be connected in series a thermistor between the folder hole of the negative pole pin of described electric capacity and the transistorized collector electrode.
The present invention has following characteristics.In ageing process, exactly the aging current density by each capacitor is controlled respectively, the capacitor electrolyte inside consumption in the ageing process is reduced to bottom line, the gas generated bottom line that is reduced to; The aging electric current of control suppresses explosion exactly, improves rate of finished products to greatest extent, improves the life-span; These process application in automatic machinery, are increased productivity to greatest extent.Apply aging electric current of the same size can for each capacitor, can apply appropriate current density according to the rated voltage of goods and the size of static capacity.So the present invention has following advantage.Can be reduced to bottom line to the capacitor inner member caloric value that in the burin-in process process, takes place, influencing each other between can suppression capacitor.
Also has following advantage.Apply suitable electric current for each capacitor, can greatly reduce burst rate, defective products rate; Can use easily on grip device and the automation equipment, produce in batches, greatly increase productivity, greatly improve rate of finished products.
Also has an advantage.Can corresponding on one's own initiative capacitor main material the variation of (materials such as anodal (+) material, electrolyte).
Description of drawings
Fig. 1 is the schematic diagram of example for the embodiment of the invention 1 with single electric capacity;
Fig. 2 is the schematic diagram of example for the embodiment of the invention 2 with single electric capacity;
Fig. 3 is the schematic diagram of example for the embodiment of the invention 3 with single electric capacity;
Fig. 4 is the schematic diagram of example for the embodiment of the invention 4 with single electric capacity;
Fig. 5 is the schematic diagram of the present invention to the aging in batches a kind of enforcement of electric capacity;
The schematic diagram that Fig. 6 implements the aging in batches another kind of electric capacity for the present invention;
Fig. 7-Fig. 9 is respectively the schematic diagram of prior art 1,2,3.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the examples of implementation 1 among the present invention are the most basic current control methods of deciding, and its feature is by transistor (being designated hereinafter simply as " TR ") a, diode c, aging power supply e and decides Current Control power supply f formation.
For the chemical synthesisization again of electrolytic capacitor cap, with the aging electric current of aging power supply e supply, the electric current that is fed on the capacitor is controlled by the current circuit of deciding that is connected on the capacitor anode (-).
At this moment, this current density of deciding electric current is by being applied to the decision of the voltage on the base terminal on the Tr a, and the current density that is applied on the capacitor is determined by the voltage of deciding Current Control power supply f.
As mentioned above, feature of deciding current control mode of the present invention is an aging power supply and decide the Current Control power supply arranged apart, applies identical current density for each capacitor, element internal is generated heat minimize, reduce burst rate and defective products rate, each Products Quality homogeneous.
As shown in Figure 1, be the method for controlling aging electric current (applying electric current for capacitor g) with the variation in voltage of deciding Current Control power supply f (applying electric current for TR a base terminal and resistance b), in other words the control of aging electric current is just carried out automatically according to deciding current/voltage control.
Embodiment 2
As shown in Figure 2, differently with embodiment 1 only be that on the capacitor front end, arranged diode c, it can prevent discharge.Part suddenly-applied short circuit in ageing process in capacitor arranged side by side, problems such as explosion perhaps take place, each capacitor that obtains charging in ageing process all can spark, and can exert one's influence mutually, and diode is arranged in order to prevent this problem.
As shown in Figure 3, differently with embodiment 2 only be (also can so be provided with certainly) on the basis of embodiment 1, at the Tr front end, arranged over-current protecting element PTC, PTC is connected in the mode of connecting with Tr.When being short-circuited phenomenon in the capacitor inside, aging power source voltage can all be applied to the Tr a that decides on the current control loop, and in a single day Tr a is in saturation condition, and whole overcurrent will flow into excessive electric current in the loop, brings damage for Tr a and resistance b.Over-current protecting element PTC arranges in order to address this problem, and when excessive electric current flowed into, it can the instantaneous trip power supply, protection Tr and resistance.
Embodiment 4
As shown in Figure 4, differently with embodiment 3 only be, in deciding the current circuit control mode, (-) power supply of aging power supply is connected as common terminal with (-) power supply of deciding the Current Control power supply, utilize this mode also can carry out deciding the Current Control burin-in process, its aging effect is consistent with the aging effect of examples of implementation 1,2,3.
Fig. 5 and Fig. 6 are respectively that the present invention carries out two kinds of aging in batches concrete schematic diagrams of implementing to alminium electrolytic condenser, because of carried out comparatively detailed description in the foregoing description 1-4, so just repeat no more at this.
The device that alminium electrolytic condenser is aging in batches, be on the basis of existing aging clamp, to have used the above-mentioned current control loop of deciding, because of holder part is existing, also carried out comparatively detailed description in the above and decide the current control loop part, so do not repeat them here, simply describe below with reference to Fig. 1-Fig. 6: the device that alminium electrolytic condenser is aging in batches comprises a jig main body, has plural number on this jig main body to folder hole, every pair of corresponding electric capacity of folder hole just, the pin of negative pole, every pair of folder hole is connected behind certain current control loop, form an aging unit, each aging unit is connected in parallel.
Describedly decide current control loop and be: a transistorized emitter connects a resistance, and this resistance is connected to the negative pole of certain Current Control power supply, and described transistorized base stage connects a diode, and this diode is connected to the described positive pole of deciding the Current Control power supply; Described transistorized collector series connection is in the folder hole of the negative pole pin of electric capacity.
The folder hole of the anodal pin of described each electric capacity diode of also connecting.
Be connected in series a thermistor between the folder hole of the negative pole pin of described electric capacity and the transistorized collector electrode.
As decide shown in the current control loop examples of implementation 4, on the emitter terminal front end of TR, arranged over-current protecting element PTC, this is in order to protect TR and to decide Current Control resistance.When the high-voltage electrolytic capacitor device is carried out burin-in process, if inner explosion of capacitor or short circuit will have excessive electric current to flow into TR in moment so, make TR be in guard mode, just TR sustains damage.This protection component PTC has been arranged, just can address this problem.When moment flowed into excessive electric current, self also generated heat PTC, and the PTC self-resistance increases sharply, and cut off super-high-current, protected TR and decided Current Control resistance.
Be displayed in Table 1 400WV/47 μ F goods have been carried out the result that the burin-in process of different modes obtains, the just result of embodiment 1,2,3,4 and prior art 1,2,3.
Table 1.400WV/47 μ F ageing test result
As shown in table 1, in deciding the aging mode of Current Control, after wearing out, the leakage current deviation obviously reduces; Aspect burst rate defective products rate, compare with prior art 1,2,3, significant difference is arranged.In deciding the aging mode of Current Control, burst rate and defective products rate obviously reduce, and the magnitude of current that each electrolytic capacitor can hold still is restricted, and is subjected to the influence of its voltage and capacity, but than superior many of former aging mode.In the former aging mode, can control total current, but control respectively with apply consistent electric current aspect its limitation is arranged.When applying the super-high-current that capacitor can not bear, capacitor internal resistance temperature sharply rises, and rapid oxidation-reduction reaction takes place, and the explosion phenomenon takes place, and causes the defective products rate high.See the result on the table, just the increase of the loss value that causes because of inner heat as can be seen.
As shown in table 1, a plurality of capacitors of the same race are carried out the burin-in process of different modes respectively, the result is as follows.Utilize and decide the burin-in process that current circuit carries out, burst rate, fraction defective can reduce more than about 2-5%.
Claims (8)
1. the aging in batches method of alminium electrolytic condenser is characterized by: behind the certain current control loop of each capacitances in series, be connected in parallel to aging power supply.
2. the method that alminium electrolytic condenser according to claim 1 is aging in batches, it is characterized by: describedly decide current control loop and be: a transistorized emitter connects a resistance, this resistance is connected to the negative pole of certain Current Control power supply, described transistorized base stage connects a diode, this diode is connected to the described positive pole of deciding the Current Control power supply, and described transistorized collector series connection is in the negative pole of electric capacity.
3. the method that alminium electrolytic condenser according to claim 2 is aging in batches is characterized by: the positive pole of described each electric capacity diode of also connecting.
4. the method that alminium electrolytic condenser according to claim 2 is aging in batches is characterized by: be connected in series a thermistor between the negative pole of described electric capacity and the transistorized collector electrode.
5. the aging in batches device of alminium electrolytic condenser, comprise a jig main body, has plural number on this jig main body to folder hole, the pin of the positive and negative electrode of every pair of corresponding electric capacity of folder hole, it is characterized by: every pair of folder hole is connected behind certain current control loop, form an aging unit, each aging unit is connected in parallel.
6. the device that alminium electrolytic condenser according to claim 5 is aging in batches, it is characterized by: describedly decide current control loop and be: a transistorized emitter connects a resistance, this resistance is connected to the negative pole of certain Current Control power supply, described transistorized base stage connects a diode, and this diode is connected to the described positive pole of deciding the Current Control power supply; Described transistorized collector series connection is in the folder hole of the negative pole pin of electric capacity.
7. the device that alminium electrolytic condenser according to claim 6 is aging in batches is characterized by: the folder hole of the anodal pin of described each electric capacity diode of also connecting.
8. the device that alminium electrolytic condenser according to claim 6 is aging in batches is characterized by: be connected in series a thermistor between the folder hole of the negative pole pin of described electric capacity and the transistorized collector electrode.
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| CN2009101967586A CN102034609A (en) | 2009-09-29 | 2009-09-29 | Method and device for aging aluminum electrolytic capacitors in batches |
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| CN2009101967586A CN102034609A (en) | 2009-09-29 | 2009-09-29 | Method and device for aging aluminum electrolytic capacitors in batches |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646514A (en) * | 2012-03-31 | 2012-08-22 | 南通一品机械电子有限公司 | Novel aging technology of mesohigh voltage aluminum electrolytic capacitor |
| CN104730438A (en) * | 2015-03-31 | 2015-06-24 | 深圳市众能达自动化设备有限公司 | Capacitor implosion and sparking detection device and system |
| CN105137128A (en) * | 2015-08-21 | 2015-12-09 | 益阳市中钰科技电子有限公司 | Multi-path ripple power supply automatic sectionalizer |
| CN110010377A (en) * | 2019-04-12 | 2019-07-12 | 西安太乙电子有限公司 | A kind of Surface Mount Leaded Ceramic Disc Capacitor installation ageing device and method |
| CN113933634A (en) * | 2021-10-15 | 2022-01-14 | 湖南恩智测控技术有限公司 | Aging test and electric energy recovery system of aluminum electrolytic capacitor |
-
2009
- 2009-09-29 CN CN2009101967586A patent/CN102034609A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646514A (en) * | 2012-03-31 | 2012-08-22 | 南通一品机械电子有限公司 | Novel aging technology of mesohigh voltage aluminum electrolytic capacitor |
| CN102646514B (en) * | 2012-03-31 | 2013-05-29 | 南通一品机械电子有限公司 | Novel aging technology of mesohigh voltage aluminum electrolytic capacitor |
| CN104730438A (en) * | 2015-03-31 | 2015-06-24 | 深圳市众能达自动化设备有限公司 | Capacitor implosion and sparking detection device and system |
| CN105137128A (en) * | 2015-08-21 | 2015-12-09 | 益阳市中钰科技电子有限公司 | Multi-path ripple power supply automatic sectionalizer |
| CN105137128B (en) * | 2015-08-21 | 2018-05-29 | 益阳市中钰科技电子有限公司 | Multichannel ripple power supplies automatic sectionalizer |
| CN110010377A (en) * | 2019-04-12 | 2019-07-12 | 西安太乙电子有限公司 | A kind of Surface Mount Leaded Ceramic Disc Capacitor installation ageing device and method |
| CN113933634A (en) * | 2021-10-15 | 2022-01-14 | 湖南恩智测控技术有限公司 | Aging test and electric energy recovery system of aluminum electrolytic capacitor |
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Application publication date: 20110427 |