CN105186662A - Voltage-sharing protection circuit of high-current low-voltage quiescent-current supercapacitor - Google Patents
Voltage-sharing protection circuit of high-current low-voltage quiescent-current supercapacitor Download PDFInfo
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- CN105186662A CN105186662A CN201510552978.3A CN201510552978A CN105186662A CN 105186662 A CN105186662 A CN 105186662A CN 201510552978 A CN201510552978 A CN 201510552978A CN 105186662 A CN105186662 A CN 105186662A
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Abstract
The invention relates to a voltage-sharing protection circuit of a high-current low-voltage quiescent-current supercapacitor. The voltage-sharing protection circuit comprises a supercapacitor C31, a triode Q and a voltage stabilization device U, wherein the positive electrode of the supercapacitor C31 is connected with the emitter of the triode, one end of a resistor R50 and one end of a resistor R58 respectively, the negative electrode of supercapacitor C31 is connected with the positive electrode of the voltage stabilization device U and connected with the collector of the triode through a resistor R62 and a resistor R65, the base of the triode is connected with the other end of the resistor R58 through a resistor R59, the negative electrode of the voltage stabilization device U is connected with a circuit between the resistor R58 and the resistor R59, the positive electrode of the voltage stabilization device U is connected with a reference voltage input end of the voltage stabilization device respectively through a capacitor C28 and a resistor R51, and the reference voltage stabilization device of the voltage stabilization device U is connected with the positive electrode of the supercapacitor C31 through the resistor R50. Therefore, the voltage-sharing protection circuit has the advantages of a simple and reliable structure, low quiescent power consumption and design reasonableness, and the problem that the supercapacitor is damaged by over-current to be cracked due to overcharging can be prevented.
Description
Technical field
The present invention relates to a kind of protective circuit, belong to field of electrical equipment, be specifically related to a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit.
Background technology
Ultracapacitor (Supercapacitors, ultracapacitor), have another name called electrochemical capacitor (ElectrochemicalCapacitors), double electric layer capacitor (ElectricalDouble-LayerCapacitor), gold electric capacity, farad capacitor are a kind of electrochemical elements being carried out energy storage by polarized electrolytic matter grown up from the 1970s and 1980s in last century.It is different from traditional chemical power source, be a kind of between traditional capacitor and battery, there is the power supply of property, mainly rely on electric double layer and Redox pseudocapacitance charge storage electric energy.But chemical reaction does not occur in the process of its energy storage, this thermal energy storage process is reversible, also just because of this ultracapacitor can repeated charge hundreds thousand of time.Its general principle is the same with the double electric layer capacitor of other kind, is all the capacity utilizing the double electrical layers of active carbon porous electrode and electrolyte composition to obtain super large.The outstanding advantages of super capacitor is that power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range is wide, is the one that in the double electric layer capacitor having dropped into volume production in the world, capacity is maximum.
In prior art, the resistance to of ultracapacitor monomer forces down, and in actual applications, needs several even hundreds of required withstand voltage Capacitor banks in series, the problem brought is that in capacitor, each monomer voltage is inconsistent, causes the energy storage of bank of super capacitors decline or be not fully utilized.If monomer voltage can not be divided equally, when big current quick charge, because the capacity of each super capacitor and Leakage Current there are differences, thus cause certain or multiple super capacitor to exist to overcharge, and then cause excessive pressure damages so that the phenomenon of explosion.
In electric power system transmission of electricity on-line monitoring equipment, the environment residing for equipment, without mains-supplied, can only get energy in the environment, as solar energy, and wind energy, the modes such as CT power taking; And it is for subsequent use to be equipped with storage battery, but the bad environments in outdoor, and summer temperature is high, and winter temperature is low, and night on daytime, the temperature difference was large, cell degradation very fast, and within 8 year quality guarantee period, maintenance cost is very high.Use super capacitor to be a good energy reserves scheme, but super capacitor monomer voltage is low, only has 2.7V; Because the capacitance difference of individuality is comparatively large, leakage current is also different, therefore use of can not directly connecting, need to use voltage equalizing protection circuit.
Summary of the invention
The capacitance difference that the present invention mainly solves the above-mentioned super capacitor individuality existing for prior art is larger; leakage current is inconsistent; easily cause the technical problem of excessive pressure damages etc., provide a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit.This circuit structure is simple and reliable, and antijamming capability is strong, and operating temperature range is wide, long service life; Time non-conduction, static leakage current is little, and power consumption is little; By-pass current is large; By selecting the resistance of suitable load resistance, by equal Hair Fixer heat power consumption transfer on resistance, power consumption and the failure rate of triode can be reduced; Equal piezoelectricity pressure is adjustable, and most I is to 2.0V; The super capacitor that can adapt to all kinds is all pressed; Can prevent super capacitor from overcharging and cause excessive pressure damages so that the problem of explosion.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, comprising: resistance R58, resistance R59, resistance R50, resistance R51, electric capacity C28, super capacitor C31, triode Q, stable-pressure device U, wherein:
The positive level that described super capacitor holds C31 is connected with one end of the emitter of triode, resistance R50, resistance R58 respectively, and its negative pole is connected with the positive pole of stable-pressure device U and is connected with the collector electrode of triode by resistance R62, resistance R65; The base stage of described triode is connected with the other end of resistance R58 by resistance R59;
The negative pole of described stable-pressure device U is connected with the circuit between described resistance R58 and resistance R59, its positive level is connected with the reference voltage input terminal of stable-pressure device U with resistance R51 respectively by electric capacity C28, and the reference voltage input terminal of described stable-pressure device U is connected with the positive level of super capacitor C31 by resistance R50.
Optimize, above-mentioned a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, the low-voltage adjustable accurate shunt regulator of described stable-pressure device U to be model be TLVH431.
Optimize, above-mentioned a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, described triode Q is PNP pliotron
Optimize, above-mentioned a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, the triode of described triode Q to be model be MJD45H11.
Optimize, above-mentioned a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, described super capacitor C31 is connected between power input Vbat and power input V-.
Therefore, tool of the present invention has the following advantages: (1) is simple and reliable for structure, and antijamming capability is strong, and operating temperature range is wide, long service life; (2) time non-conduction, static leakage current is little, and power consumption is little; (3) by-pass current is large, depends on the maximum operating currenbt of Q, can reach more than 5A; (4) select the resistance of suitable load resistance (R62, R63), by equal Hair Fixer heat power consumption transfer on resistance, the power consumption of triode Q can be reduced, reduce the failure rate of Q; (5) all piezoelectricity pressure can be adjustable by the resistance of R50, R51, and most I is to 2.0V; The super capacitor that can adapt to all kinds is all pressed; Can prevent super capacitor from overcharging and cause excessive pressure damages so that the problem of explosion.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of electrical block diagram of the present invention;
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In figure, 1 is 1 pin of stable-pressure device U, and 2 is 2 pin of stable-pressure device U, and 3 is 3 pin of stable-pressure device U, and B is the base stage of triode Q, and C is the collector electrode of triode Q, and E is the emitter of triode Q.
Embodiment:
A kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, comprising: comprising: resistance R58, resistance R59, resistance R50, resistance R51, electric capacity C28, super capacitor C31, triode Q, stable-pressure device U, wherein:
The positive level that super capacitor holds C31 is connected with one end of the emitter of triode, resistance R50, resistance R58 respectively, and its negative pole is connected with the positive pole of stable-pressure device U and is connected with the collector electrode of triode by resistance R62, resistance R65; The base stage of triode is connected with the other end of resistance R58 by resistance R59;
The negative pole of stable-pressure device U and 2 pin of stable-pressure device U are connected with the circuit between resistance R58 and resistance R59,3 pin of its positive level and stable-pressure device U are connected with the reference voltage input terminal of stable-pressure device U and 1 pin of stable-pressure device U with resistance R51 respectively by electric capacity C28, and the reference voltage input terminal of stable-pressure device U is connected with the positive level of super capacitor C31 by resistance R50.
The low-voltage adjustable accurate shunt regulator of stable-pressure device U to be model be TLVH431.Triode Q is PNP pliotron, and model is the triode of MJD45H11.
Super capacitor is connected between power input Vbat and V-, and resistance R50 and R51 forms bleeder circuit, and C28 is connected in parallel on the effect that R51 plays filtering, strengthens Anti-Jamming; When the voltage on R51 more than 1.24V time, the 2 pin conductings of stable-pressure device U, suck electric current by current-limiting resistance R59 from the base stage of Q, Q conducting, maintains the voltage of super capacitor 2 end on 1.24* (R51/ (R51+R50)).Load resistance when R58 is U non-conduction, when U does not have conducting, makes Q end completely, reduces the leakage current of Q.R62, R65 are the load resistances of Q, select rational resistance, and the heating power on Q is transferred to R62, on R65, reduce the caloric value of Q, reduce the failure rate of Q.
From foregoing description, the present embodiment has the following advantages: (1) is simple and reliable for structure, and antijamming capability is strong, and operating temperature range is wide, long service life; (2) time non-conduction, static leakage current is little, and power consumption is little; (3) by-pass current is large, depends on the maximum operating currenbt of Q, can reach more than 5A; (4) select the resistance of suitable load resistance (R62, R63), by equal Hair Fixer heat power consumption transfer on resistance, the power consumption of triode Q can be reduced, reduce the failure rate of Q; (5) all piezoelectricity pressure can be adjustable by the resistance of R50, R51, and most I is to 2.0V; The super capacitor that can adapt to all kinds is all pressed; Can prevent super capacitor from overcharging and cause excessive pressure damages so that the problem of explosion.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ resistance R58, resistance R59, resistance R50, resistance R51, electric capacity C28, super capacitor C31 herein, triode Q, stable-pressure device U, waits term, does not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (5)
1. a high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit, is characterized in that, comprising: resistance R58, resistance R59, resistance R50, resistance R51, electric capacity C28, super capacitor C31, triode Q, stable-pressure device U, wherein:
The positive level of described super capacitor C31 is connected with one end of the emitter of triode Q, resistance R50, resistance R58 respectively, and its negative pole is connected with the positive pole of stable-pressure device U and is connected with the collector electrode of triode Q by resistance R62, resistance R65; The base stage of described triode Q is connected with the other end of resistance R58 by resistance R59;
The negative pole of described stable-pressure device U is connected with the circuit between described resistance R58 and resistance R59, its positive level is connected with the reference voltage input terminal of stable-pressure device U with resistance R51 respectively by electric capacity C28, and the reference voltage input terminal of described stable-pressure device U is connected with the positive level of super capacitor C31 by resistance R50.
2. a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit according to claim 1, is characterized in that, the low-voltage adjustable accurate shunt regulator of described stable-pressure device U to be model be TLVH431.
3. a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit according to claim 1, it is characterized in that, described triode Q is PNP pliotron.
4. a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit according to claim 3, is characterized in that, the triode of described triode Q to be model be MJD45H11.
5. a kind of high-current low-voltage low quiescent current super capacitor voltage equalizing protection circuit according to claim 1, it is characterized in that, described super capacitor C31 is connected between power input Vbat and power input V-.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552978.3A CN105186662A (en) | 2015-09-01 | 2015-09-01 | Voltage-sharing protection circuit of high-current low-voltage quiescent-current supercapacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510552978.3A CN105186662A (en) | 2015-09-01 | 2015-09-01 | Voltage-sharing protection circuit of high-current low-voltage quiescent-current supercapacitor |
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| CN105186662A true CN105186662A (en) | 2015-12-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104584A (en) * | 2017-05-09 | 2017-08-29 | 广东美的暖通设备有限公司 | Variable-frequency filtering circuit, conversion power supply circuit and frequency conversion equipment |
| CN108108291A (en) * | 2017-12-25 | 2018-06-01 | 曙光信息产业(北京)有限公司 | A kind of trouble-shooter of server |
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| US20040263121A1 (en) * | 2003-04-25 | 2004-12-30 | Maxwell Technologies, Inc. | Charge balancing circuit for double-layer capacitors |
| CN102158067A (en) * | 2011-04-20 | 2011-08-17 | 广州金升阳科技有限公司 | Starting circuit for switching power supply |
| CN202663138U (en) * | 2012-05-15 | 2013-01-09 | 深圳珈伟光伏照明股份有限公司 | Battery-protecting circuit |
| CN103595102A (en) * | 2013-11-23 | 2014-02-19 | 大连尚能科技发展有限公司 | Novel super capacitor voltage equalizing circuit |
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2015
- 2015-09-01 CN CN201510552978.3A patent/CN105186662A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040263121A1 (en) * | 2003-04-25 | 2004-12-30 | Maxwell Technologies, Inc. | Charge balancing circuit for double-layer capacitors |
| CN102158067A (en) * | 2011-04-20 | 2011-08-17 | 广州金升阳科技有限公司 | Starting circuit for switching power supply |
| CN202663138U (en) * | 2012-05-15 | 2013-01-09 | 深圳珈伟光伏照明股份有限公司 | Battery-protecting circuit |
| CN103595102A (en) * | 2013-11-23 | 2014-02-19 | 大连尚能科技发展有限公司 | Novel super capacitor voltage equalizing circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104584A (en) * | 2017-05-09 | 2017-08-29 | 广东美的暖通设备有限公司 | Variable-frequency filtering circuit, conversion power supply circuit and frequency conversion equipment |
| CN107104584B (en) * | 2017-05-09 | 2023-09-29 | 广东美的暖通设备有限公司 | Frequency conversion filter circuit, frequency conversion power supply circuit and frequency conversion equipment |
| CN108108291A (en) * | 2017-12-25 | 2018-06-01 | 曙光信息产业(北京)有限公司 | A kind of trouble-shooter of server |
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Application publication date: 20151223 |
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