CN102830306A - Low-voltage short-circuit detection circuit and detection method for aluminum electrolytic capacitor - Google Patents
Low-voltage short-circuit detection circuit and detection method for aluminum electrolytic capacitor Download PDFInfo
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- CN102830306A CN102830306A CN 201210294072 CN201210294072A CN102830306A CN 102830306 A CN102830306 A CN 102830306A CN 201210294072 CN201210294072 CN 201210294072 CN 201210294072 A CN201210294072 A CN 201210294072A CN 102830306 A CN102830306 A CN 102830306A
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Abstract
The invention discloses a Low-voltage short-circuit detection circuit and detection method for an aluminum electrolytic capacitor. The low-voltage short-circuit detection circuit comprises a work station 1, a work station 2 and a work station 3, wherein the work station 1 is a charging circuit and comprises a resistor R1 and a capacitor C1; the work station 2 is a charging circuit and comprises a resistor R2 and a capacitor C2; the work station 3 is a detection circuit and comprises a resistor R3 and a capacitor C3; the short-circuit detection method is applied to an automatic aging machine sorter device of the aluminum electrolytic capacitor, the work station 1 and the work station 2 are used for respectively charging the capacitor through the R1 and R2, the work station 3 detects the capacitor through the R3, and the resistor R1 and the capacitor C1 in the work station 1 circuit are connected with each other in series; the resistor R2 and the capacitor C2 in the circuit of the work station 2 are connected with each other in series; the resistor R3 and the capacitor C3 in the work station 3 are connected with each other in series; and the circuits on one ends of the work station 1, the work station 2 and the work station 3 are serially connected with a power supply after being connected with each other in parallel. Through the structure, the influence of foil powder, false short circuit and the like on the high-frequency low-impedance electrolytic capacitor before being aged can be effectively eliminated, and the detection accuracy can be improved.
Description
Technical field
The present invention relates to a kind of low-voltage mode short-circuit detecting circuit and detection method thereof to aluminium electrolutic capacitor.
Background technology
Capacitor is the requisite element in various electronic products terminal, in electronic system, plays crucial effects.In industry, power supply etc. are used; System manufacturer is more urgent to the demand of the capacitor of high power capacity, low ESR, small size; And in automobile, medical treatment, military project and Aero-Space etc. are used, then capacitor life-span, withstand voltage, reliability etc. are had higher requirement.Capacitor is various in style, and quality is different, before dispatching from the factory, must do detection, classification work, could satisfy quality requirements.To aging machine sorting feeding part in the past feeding part can not adapt to the situation of low impedance at high frequency aluminium electrolutic capacitor to the 5V voltage detecting of capacitor short-circuit.Adopt low-voltage 0.5V to detect, could effectively distinguish the false short circuit article that aging preceding short circuit article and Hi-pot test cause.
Summary of the invention
The present invention a kind of low-voltage mode short-circuit detecting circuit and detection method thereof to aluminium electrolutic capacitor, its objective is provides a kind of reliable detection method, the problem of the false short circuit article that short circuit article and Hi-pot test caused before solution was effectively distinguished and worn out.
The present invention realizes that through following technical scheme a kind of low-voltage mode method for detecting short circuit to aluminium electrolutic capacitor comprises station 1, station 2, station 3, and said station 1 is a charging circuit, and R1, C1 are arranged; Said station 2 is charging circuits, and R2, C2 are arranged; Said station 3 is testing circuits, and R3, C3 are arranged; This method for detecting short circuit is on the automatically aging machine separator equipment of aluminium electrolutic capacitor; Station 1, station 2 charge to capacitor through R1 and R2 respectively; Station 3 detects capacitor through R3; The employing low-voltage detects, and selects metalfilmresistor for use, and the Control current maximum is no more than 2.5mA.
Be as further improvement of the present invention: in said station 1 and the station 2, supply voltage U1=U2=0.5V R1=R2=400 Ω I1=I2=1.25mA, in station 3, supply voltage U3=0.5V R3=200 Ω I3=2.5mA.
A kind of low-voltage mode short-circuit detecting circuit to aluminium electrolutic capacitor, resistance R 1 and capacitor C 1 series connection in said station 1 circuit; Resistance R 2 and capacitor C 2 series connection in the station 2; Resistance R 3 and capacitor C 3 series connection in the station 3; Connect with power supply after the one terminal circuit parallel connection of described station 1, station 2, station 3.
The invention has the beneficial effects as follows: can effectively get rid of paper tinsel powder, burr, false short circuit etc. to the influence before the low impedance at high frequency aging aluminium electrolysis capacitor through being provided with like this, improve the accuracy rate of detection and the yield rate in the production run.
Description of drawings
Fig. 1 is the structural representation of testing circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further detailed description:
As shown in Figure 1: a kind of low-voltage mode method for detecting short circuit of present embodiment to aluminium electrolutic capacitor, comprise station 1, station 2, station 3, said station 1 is a charging circuit, and R1, C1 are arranged; Said station 2 is charging circuits, and R2, C2 are arranged; Said station 3 is testing circuits, and R3, C3 are arranged; This method for detecting short circuit is on the automatically aging machine separator equipment of aluminium electrolutic capacitor; Station 1, station 2 charge to capacitor through R1 and R2 respectively; Station 3 detects capacitor through R3; The employing low-voltage detects, and selects metalfilmresistor for use, and the Control current maximum is no more than 2.5mA.
A kind of low-voltage mode short-circuit detecting circuit to aluminium electrolutic capacitor, resistance R 1 and capacitor C 1 series connection in said station 1 circuit; Resistance R 2 and capacitor C 2 series connection in the station 2; Resistance R 3 and capacitor C 3 series connection in the station 3; Connect with power supply after the one terminal circuit parallel connection of described station 1, station 2, station 3.
Wherein said Control current is calculated wherein U---power supply piezoelectric voltage of I=U/R by following formula; R---resistance.
For example, in station 1 and station 2, supply voltage U1=U2=0.5V R1=R2=400 Ω I1=I2=1.25mA
In station 3, supply voltage U3=0.5V R3=200 Ω I3=2.5mA.
The beneficial effect of present embodiment is: can effectively get rid of paper tinsel powder, burr, false short circuit etc. to the influence before the low impedance at high frequency aging aluminium electrolysis capacitor, improve the accuracy rate of detection and the yield rate in the production run.
Claims (3)
1. low-voltage mode method for detecting short circuit to aluminium electrolutic capacitor, it is characterized in that: comprise station 1, station 2, station 3, said station 1 is a charging circuit, includes R1, C1; Said station 2 is charging circuits, includes R2, C2; Said station 3 is testing circuits, includes R3, C3; This method for detecting short circuit is on the automatically aging machine separator equipment of aluminium electrolutic capacitor; Station 1, station 2 charge to capacitor through R1 and R2 respectively; Station 3 detects capacitor through R3; The employing low-voltage detects, and selects metalfilmresistor for use, and the Control current maximum is no more than 2.5mA.
2. according to the said a kind of low-voltage mode method for detecting short circuit of claim 1 to aluminium electrolutic capacitor; It is characterized in that: in said station 1 and the station 2; Supply voltage U1=U2=0.5V R1=R2=400 Ω I1=I2=1.25mA; In station 3, supply voltage U3=0.5V R3=200 Ω I3=2.5mA.
3. the low-voltage mode short-circuit detecting circuit to aluminium electrolutic capacitor is characterized in that: resistance R 1 and capacitor C 1 series connection in said station 1 circuit; Resistance R 2 and capacitor C 2 series connection in the station 2; Resistance R 3 and capacitor C 3 series connection in the station 3; Connect with power supply after the one terminal circuit parallel connection of described station 1, station 2, station 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210294072 CN102830306A (en) | 2012-08-17 | 2012-08-17 | Low-voltage short-circuit detection circuit and detection method for aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210294072 CN102830306A (en) | 2012-08-17 | 2012-08-17 | Low-voltage short-circuit detection circuit and detection method for aluminum electrolytic capacitor |
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| CN102830306A true CN102830306A (en) | 2012-12-19 |
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| CN 201210294072 Pending CN102830306A (en) | 2012-08-17 | 2012-08-17 | Low-voltage short-circuit detection circuit and detection method for aluminum electrolytic capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093146A (en) * | 2014-05-07 | 2015-11-25 | 哈尔滨飞机工业集团有限责任公司 | Low-voltage detector tester |
| CN109613365A (en) * | 2018-12-20 | 2019-04-12 | 中南大学 | A kind of electrolytic capacitor state online evaluation method and system |
| CN110333416A (en) * | 2019-08-07 | 2019-10-15 | 常州华威电子有限公司 | A kind of high-voltage electrolytic capacitor durability testing system and method |
| CN111383843A (en) * | 2020-03-05 | 2020-07-07 | 深圳市必事达电子有限公司 | Electrolytic capacitor aging method and system and automatic aging machine |
-
2012
- 2012-08-17 CN CN 201210294072 patent/CN102830306A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093146A (en) * | 2014-05-07 | 2015-11-25 | 哈尔滨飞机工业集团有限责任公司 | Low-voltage detector tester |
| CN109613365A (en) * | 2018-12-20 | 2019-04-12 | 中南大学 | A kind of electrolytic capacitor state online evaluation method and system |
| CN109613365B (en) * | 2018-12-20 | 2021-01-29 | 中南大学 | Electrolytic capacitor state online evaluation method and system |
| CN110333416A (en) * | 2019-08-07 | 2019-10-15 | 常州华威电子有限公司 | A kind of high-voltage electrolytic capacitor durability testing system and method |
| CN111383843A (en) * | 2020-03-05 | 2020-07-07 | 深圳市必事达电子有限公司 | Electrolytic capacitor aging method and system and automatic aging machine |
| CN111383843B (en) * | 2020-03-05 | 2021-08-27 | 深圳市必事达电子有限公司 | Electrolytic capacitor aging method and system and automatic aging machine |
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Application publication date: 20121219 |