CN204347193U - Electric capacity internal explosion pick-up unit - Google Patents
Electric capacity internal explosion pick-up unit Download PDFInfo
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- CN204347193U CN204347193U CN201420821076.6U CN201420821076U CN204347193U CN 204347193 U CN204347193 U CN 204347193U CN 201420821076 U CN201420821076 U CN 201420821076U CN 204347193 U CN204347193 U CN 204347193U
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Abstract
Electric capacity internal explosion pick-up unit, it comprises voltage change detection unit and processor U9; This voltage change and the change in voltage threshold value preset for detecting the voltage change of electric capacity Cx to be aging, and are compared by this voltage change detection unit, when this voltage change is greater than change in voltage threshold value, send voltage jump signal to processor U9; Processor U9 is used for according to the cue of this voltage jump signal output for pointing out electric capacity internal explosion.Above-mentioned utility model can detect the electric capacity that internal explosion or scintillation occur rapidly and accurately in electric capacity operation to be aging.
Description
Technical field
The utility model relates to a kind of electric capacity internal explosion pick-up unit.
Background technology
There are some technological problemses in capacitor, such as, electrode foil can produce burr when trimming, and electrolytic solution or electrolytic paper contain impurity in process of production sometimes; So, will cause electric capacity in the process of charging, along with charging voltage reaches voltage breakdown, the electricity in capacitor is discharged by the tip of burr and electrode foil, and moment consumes in a large number, will there is the danger of internal explosion.If internal explosion degree is comparatively large, the shell blown likely entail dangers to personal safety.If internal explosion degree is less, cannot know that it exists potential danger from capacitor outward appearance, even if all possibly cannot be detected by conventional capacity or electric leakage.For the product containing impurity in electrolytic solution, in voltage rise to can unexpected scintillation during breakdown point, the electrolytic solution of flashing point also can therefore by high temperature evaporation, the electrolytic solution of normal portions is absorbed by the electrolytic paper dried up and scintillation occurs to repeat subsequently, capacitor internal pressure can increase thereupon, and repeatedly after scintillation, capacitor all can explode at any time.
Fabricated capacitors all will through aging process before dispatching from the factory, aging process is capacitor first time charging, the aging required time is longer, from more than one hour to tens hours not etc., and carry out in high temperature environments, and traditional capacitor aging case and full-automatic ageing machine only carry out resistance current-limiting charge to capacitor in ageing process, do not possess the function finding and detect implosion scintillation, so, dispatch from the factory likely making the capacitor that there is internal explosion risk be taken as conjunction rule capacitor.
Utility model content
For the deficiencies in the prior art, the utility model is intended to provide a kind of electric capacity internal explosion pick-up unit solved the problems of the technologies described above.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electric capacity internal explosion pick-up unit, it comprises voltage change detection unit and processor U9;
This voltage change and the change in voltage threshold value preset for detecting the voltage change of electric capacity Cx to be aging, and are compared by this voltage change detection unit, when this voltage change is greater than change in voltage threshold value, send voltage jump signal to processor U9; Processor U9 is used for according to the cue of this voltage jump signal output for pointing out electric capacity internal explosion.
Preferably, this electric capacity internal explosion pick-up unit also comprises current sampling unit; This current sampling unit for detecting the electric current of electric capacity Cx to be aging, to generate current sampling signal, this processor U9 also for the current sampling signal of real-time reception current sampling unit, to detect the current sampling signal of undergoing mutation.
Preferably, this electric capacity internal explosion pick-up unit also comprises constant current regulation units; This constant current regulation units is pre-set constant current value for regulating the electric current of electric capacity Cx to be aging.
Preferably, this electric capacity internal explosion pick-up unit also comprises a voltage sampling unit, for detecting the voltage of electric capacity to be aging, with formation voltage sampled signal; This processor U9 also for this voltage sampling signal of real-time reception, to detect voltage signal of undergoing mutation.
Preferably, electric capacity internal explosion pick-up unit also comprises a rectifier bridge stack U1, and the positive terminal of a DC charging power supply VCC is connected the negative pole end of DC charging power supply VCC by electric capacity Cx to be aging and the interchange end of rectifier bridge stack U1;
This voltage change detection unit comprises resistance R3, electric capacity C2, resistance R4, integrated transporting discharging U2A, resistance R5, electric capacity C5 and resistance R12; The DC output end V+ of this rectifier bridge stack U1 is successively by resistance R3, electric capacity C2 and resistance R4 ground connection; The in-phase end of integrated transporting discharging U2A is connected between electric capacity C2 and resistance R4; The end of oppisite phase of integrated transporting discharging U2A, by the pwm signal output terminal PB2 of resistance R12 connection handling device, also passes through electric capacity C5 ground connection.
Preferably, this current sampling unit comprises resistance R8, resistance R9, electric capacity C3 and analog to digital converter U8; This constant current regulation units comprises field effect transistor Q1, integrated transporting discharging U2B, resistance R11 and electric capacity C4; The DC output end V+ of rectifier bridge stack U1 connects the drain electrode of field effect transistor Q1, and the source electrode of field effect transistor Q1, by resistance R8 ground connection, also passes through resistance R9 and electric capacity C3 ground connection successively; Input end+the IN of analog to digital converter U8 connects between electric capacity C3 and resistance R9, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U8, the PD7 of the Enable Pin CS connection handling device U9 of analog to digital converter U8; The grid of field effect transistor Q1 connects the output terminal of integrated transporting discharging U2B, and the in-phase end of integrated transporting discharging U2B, by electric capacity C4 ground connection, also passes through the pwm signal output terminal PB1 of resistance R11 connection handling device U9; The end of oppisite phase of integrated transporting discharging U2B is connected between resistance R8 and resistance R9.
Preferably, this voltage sampling unit comprises resistance R1, resistance R2, electric capacity C1 and analog to digital converter U7; The DC output end V+ of rectifier bridge stack U1 is successively by resistance R1 and resistance R2 ground connection, and electric capacity C1 and resistance R2 is in parallel; Between the input end+IN contact resistance R1 of analog to digital converter U7 and resistance R2, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U7, the output terminal PB0 of the Enable Pin CS connection handling device U9 of analog to digital converter U7.
Preferably, this electric capacity internal explosion pick-up unit also comprises for carrying out with a host computer serial communication unit that communicates; This serial communication unit connection handling device U9; This processor U9 also stores for current sampling signal is sent to host computer by this serial communication unit.
Preferably, this electric capacity internal explosion pick-up unit also comprises for carrying out with a host computer serial communication unit that communicates; This serial communication unit connection handling device U9; This processor U9 also stores for voltage sampling signal is sent to host computer by this serial communication unit.
Above-mentioned utility model can detect the electric capacity that internal explosion or scintillation occur rapidly and accurately in electric capacity operation to be aging.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the better embodiment of the utility model electric capacity internal explosion pick-up unit.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Refer to Fig. 1, the utility model relates to a kind of electric capacity internal explosion pick-up unit, and its better embodiment comprises voltage change detection unit and processor U9.
This voltage change and the change in voltage threshold value preset for detecting the voltage change of electric capacity to be aging, and are compared by this voltage change detection unit, when this voltage change is greater than change in voltage threshold value, send voltage jump signal to processor.
Processor U9 is used for according to the cue of this voltage jump signal output for pointing out electric capacity internal explosion.
In the present embodiment, electric capacity internal explosion pick-up unit also comprises a rectifier bridge stack U1, and the positive terminal of a DC charging power supply VCC is connected the negative pole end of DC charging power supply VCC by electric capacity Cx to be aging and the interchange end of rectifier bridge stack U1.DC charging power supply VCC, electric capacity Cx to be aging and rectifier bridge stack U1 form the charge circuit of an electric capacity Cx to be aging.
This voltage change detection unit comprises resistance R3, electric capacity C2, resistance R4, integrated transporting discharging U2A, resistance R5, electric capacity C5 and resistance R12.
The DC output end V+ of this rectifier bridge stack U1 is successively by resistance R3, electric capacity C2 and resistance R4 ground connection.The in-phase end of integrated transporting discharging U2A is connected between electric capacity C2 and resistance R4.The end of oppisite phase of integrated transporting discharging U2A, by the pwm signal output terminal PB2 of resistance R12 connection handling device, also passes through electric capacity C5 ground connection.
When electric capacity Cx to be aging can consume instantaneously when implosion or scintillation appear in charging process, self is a large amount of, the voltage instantaneous of electric capacity Cx to be aging is significantly reduced, because the output voltage of DC charging power supply VCC is constant, moment significantly increases by the DC voltage that then rectifier bridge stack U1 exports, and voltage change is transferred to integrated transporting discharging U2A by the infinitesimal analysis circuit that resistance R3 and electric capacity C2 forms.Processor U9 exports the first pwm signal that presets dutycycle, and this pwm signal is converted to the change in voltage threshold value of analog quantity by the integrating circuit that resistance R12 and electric capacity C5 forms, and then is delivered to integrated transporting discharging U2A.Voltage change and change in voltage threshold value compare by integrated transporting discharging U2A, export the first input end PB7 of high level signal to processor U9 when voltage change is greater than change in voltage threshold value.Processor U9 exports the cue for pointing out electric capacity internal explosion according to this high level signal.
Wherein, namely be may correspond to the size changing change in voltage threshold value by the dutycycle arranging the first pwm signal, with the detection sensitivity of regulation voltage change detecting unit.This is used for pointing out the cue of electric capacity internal explosion can be and drives loudspeaker or/and the signal of LED operation.
This voltage change detection unit comprises voltage stabilizing diode D2, and this voltage stabilizing diode D2 and resistance R4 is connected in parallel, and for carrying out clamper to the voltage of instantaneous variation, prevents overtension from damaging integrated transporting discharging U2A.
In the present embodiment, this electric capacity internal explosion pick-up unit also comprises current sampling unit and constant current regulation units.This current sampling unit for detecting the electric current of electric capacity Cx to be aging, to generate current sampling signal, this processor U9 also for the current sampling signal of real-time reception current sampling unit, to detect the current sampling signal of undergoing mutation; So, secondary judgement can be carried out to electric capacity implosion to be aging.This constant current regulation units is pre-set constant current value for regulating the electric current of electric capacity Cx to be aging, with in capacitor implosion or scintillation limit charging current.
This current sampling unit comprises resistance R8, resistance R9, electric capacity C3 and analog to digital converter U8.This constant current regulation units comprises field effect transistor Q1, integrated transporting discharging U2B, resistance R11 and electric capacity C4.
The DC output end V+ of rectifier bridge stack U1 connects the drain electrode of field effect transistor Q1, and the source electrode of field effect transistor Q1, by resistance R8 ground connection, also passes through resistance R9 and electric capacity C3 ground connection successively.Input end+the IN of analog to digital converter U8 connects between electric capacity C3 and resistance R9, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U8, the PD7 of the Enable Pin CS connection handling device U9 of analog to digital converter U8.The grid of field effect transistor Q1 connects the output terminal of integrated transporting discharging U2B, and the in-phase end of integrated transporting discharging U2B, by electric capacity C4 ground connection, also passes through the pwm signal output terminal PB1 of resistance R11 connection handling device U9.The end of oppisite phase of integrated transporting discharging U2B is connected between resistance R8 and resistance R9.
Carry out analog to digital conversion from after the integrating circuit that the direct current of rectifier bridge stack U1 consists of electric capacity C3 and resistance R9 by analog to digital converter U8, then current sampling signal is delivered to processor U9.Meanwhile, the electric potential signal after integration is delivered to integrated transporting discharging U2B.The pwm signal output terminal PB2 of processor U9 exports the second pwm signal that presets dutycycle, this second pwm signal is converted to the threshold potential of analog quantity by the integrating circuit that resistance R11 and electric capacity C4 forms, electric potential signal after integration and current threshold are compared by integrated transporting discharging U2B, when current signal is greater than current threshold, integrated transporting discharging U2B output low level signal, field effect transistor Q1 is ended, thus make the separated of rectifier bridge stack U1 and current sampling unit, resistance R8, resistance R9 and electric capacity C3 forms a discharge loop, the voltage of resistance R9 diminishes, until the electric potential signal of the end of oppisite phase of integrated transporting discharging U2B is less than threshold potential, the output terminal of integrated transporting discharging U2B exports high level signal, make field effect transistor Q1 conducting, the conducting again of rectifier bridge stack U1 and current sampling unit.So, the electric current of dynamic adjustments electric capacity Cx to be aging is pre-set constant current value, with in capacitor implosion or scintillation limit charging current.
In the present embodiment, this electric capacity internal explosion pick-up unit also comprises a voltage sampling unit, for detecting the voltage of electric capacity Cx to be aging, with formation voltage sampled signal.This processor U9 also for this voltage sampling signal of real-time reception, to detect voltage signal of undergoing mutation.So, secondary judgement can be carried out to electric capacity implosion to be aging.
This voltage sampling unit comprises resistance R1, resistance R2, electric capacity C1 and analog to digital converter U7.The DC output end V+ of rectifier bridge stack U1 is successively by resistance R1 and resistance R2 ground connection, and electric capacity C1 and resistance R2 is in parallel.Between the input end+IN contact resistance R1 of analog to digital converter U7 and resistance R2, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U7, the output terminal PB0 of the Enable Pin CS connection handling device U9 of analog to digital converter U7.
Processor U9 controls analog to digital converter U7 and analog to digital converter U8 one after the other work, to read voltage sampling signal and current sampling signal respectively by input end PD6.
This electric capacity internal explosion pick-up unit also comprises for carrying out with a host computer serial communication unit 10 that communicates.This serial communication unit 10 connection handling device U9.This processor U9 also stores for current sampling signal and voltage sampling signal are sent to host computer by this serial communication unit.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the utility model claim.
Claims (9)
1. an electric capacity internal explosion pick-up unit, is characterized in that: it comprises voltage change detection unit and processor U9;
This voltage change and the change in voltage threshold value preset for detecting the voltage change of electric capacity Cx to be aging, and are compared by this voltage change detection unit, when this voltage change is greater than change in voltage threshold value, send voltage jump signal to processor U9; Processor U9 is used for according to the cue of this voltage jump signal output for pointing out electric capacity internal explosion.
2. electric capacity internal explosion pick-up unit as claimed in claim 1, is characterized in that: this electric capacity internal explosion pick-up unit also comprises current sampling unit; This current sampling unit for detecting the electric current of electric capacity Cx to be aging, to generate current sampling signal, this processor U9 also for the current sampling signal of real-time reception current sampling unit, to detect the current sampling signal of undergoing mutation.
3. electric capacity internal explosion pick-up unit as claimed in claim 2, is characterized in that: this electric capacity internal explosion pick-up unit also comprises constant current regulation units; This constant current regulation units is pre-set constant current value for regulating the electric current of electric capacity Cx to be aging.
4. electric capacity internal explosion pick-up unit as claimed in claim 1, is characterized in that: this electric capacity internal explosion pick-up unit also comprises a voltage sampling unit, for detecting the voltage of electric capacity to be aging, with formation voltage sampled signal; This processor U9 also for this voltage sampling signal of real-time reception, to detect voltage signal of undergoing mutation.
5. electric capacity internal explosion pick-up unit as claimed in claim 1, it is characterized in that: electric capacity internal explosion pick-up unit also comprises a rectifier bridge stack U1, the positive terminal of a DC charging power supply VCC is connected the negative pole end of DC charging power supply VCC by electric capacity Cx to be aging and the interchange end of rectifier bridge stack U1;
This voltage change detection unit comprises resistance R3, electric capacity C2, resistance R4, integrated transporting discharging U2A, resistance R5, electric capacity C5 and resistance R12; The DC output end V+ of this rectifier bridge stack U1 is successively by resistance R3, electric capacity C2 and resistance R4 ground connection; The in-phase end of integrated transporting discharging U2A is connected between electric capacity C2 and resistance R4; The end of oppisite phase of integrated transporting discharging U2A, by the pwm signal output terminal PB2 of resistance R12 connection handling device, also passes through electric capacity C5 ground connection.
6. electric capacity internal explosion pick-up unit as claimed in claim 3, it is characterized in that: electric capacity internal explosion pick-up unit also comprises a rectifier bridge stack U1, the positive terminal of a DC charging power supply VCC is connected the negative pole end of DC charging power supply VCC by electric capacity Cx to be aging and the interchange end of rectifier bridge stack U1;
This current sampling unit comprises resistance R8, resistance R9, electric capacity C3 and analog to digital converter U8; This constant current regulation units comprises field effect transistor Q1, integrated transporting discharging U2B, resistance R11 and electric capacity C4; The DC output end V+ of rectifier bridge stack U1 connects the drain electrode of field effect transistor Q1, and the source electrode of field effect transistor Q1, by resistance R8 ground connection, also passes through resistance R9 and electric capacity C3 ground connection successively; Input end+the IN of analog to digital converter U8 connects between electric capacity C3 and resistance R9, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U8, the PD7 of the Enable Pin CS connection handling device U9 of analog to digital converter U8; The grid of field effect transistor Q1 connects the output terminal of integrated transporting discharging U2B, and the in-phase end of integrated transporting discharging U2B, by electric capacity C4 ground connection, also passes through the pwm signal output terminal PB1 of resistance R11 connection handling device U9; The end of oppisite phase of integrated transporting discharging U2B is connected between resistance R8 and resistance R9.
7. electric capacity internal explosion pick-up unit as claimed in claim 4, it is characterized in that: electric capacity internal explosion pick-up unit also comprises a rectifier bridge stack U1, the positive terminal of a DC charging power supply VCC is connected the negative pole end of DC charging power supply VCC by electric capacity Cx to be aging and the interchange end of rectifier bridge stack U1;
This voltage sampling unit comprises resistance R1, resistance R2, electric capacity C1 and analog to digital converter U7; The DC output end V+ of rectifier bridge stack U1 is successively by resistance R1 and resistance R2 ground connection, and electric capacity C1 and resistance R2 is in parallel; Between the input end+IN contact resistance R1 of analog to digital converter U7 and resistance R2, the input end PD6 of the output terminal DOUT connection handling device U9 of analog to digital converter U7, the output terminal PB0 of the Enable Pin CS connection handling device U9 of analog to digital converter U7.
8. electric capacity internal explosion pick-up unit as claimed in claim 2, is characterized in that: this electric capacity internal explosion pick-up unit also comprises for carrying out with a host computer serial communication unit that communicates; This serial communication unit connection handling device U9; This processor U9 also stores for current sampling signal is sent to host computer by this serial communication unit.
9. electric capacity internal explosion pick-up unit as claimed in claim 7, is characterized in that: this electric capacity internal explosion pick-up unit also comprises for carrying out with a host computer serial communication unit that communicates; This serial communication unit connection handling device U9; This processor U9 also stores for voltage sampling signal is sent to host computer by this serial communication unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420821076.6U CN204347193U (en) | 2014-12-19 | 2014-12-19 | Electric capacity internal explosion pick-up unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420821076.6U CN204347193U (en) | 2014-12-19 | 2014-12-19 | Electric capacity internal explosion pick-up unit |
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| CN204347193U true CN204347193U (en) | 2015-05-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535907A (en) * | 2014-12-19 | 2015-04-22 | 深圳市众能达自动化设备有限公司 | Detecting device for capacitor internal explosion |
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2014
- 2014-12-19 CN CN201420821076.6U patent/CN204347193U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535907A (en) * | 2014-12-19 | 2015-04-22 | 深圳市众能达自动化设备有限公司 | Detecting device for capacitor internal explosion |
| WO2016095829A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市众能达自动化设备有限公司 | Detection device for internal explosion of capacitor |
| CN104535907B (en) * | 2014-12-19 | 2017-11-07 | 深圳市众能达自动化设备有限公司 | Electric capacity internal explosion detection means |
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