CN103607011A - Novel supercapacitor voltage sharing circuit - Google Patents
Novel supercapacitor voltage sharing circuit Download PDFInfo
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- CN103607011A CN103607011A CN201310604355.7A CN201310604355A CN103607011A CN 103607011 A CN103607011 A CN 103607011A CN 201310604355 A CN201310604355 A CN 201310604355A CN 103607011 A CN103607011 A CN 103607011A
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Abstract
Disclosed is a novel supercapacitor voltage sharing circuit. The novel supercapacitor voltage sharing circuit comprises resistors, operational amplifiers, a triode and a supercapacitor single body. The negative input end of the operational amplifier I is used for inputting a single body reference voltage, a module reference voltage is input to the positive input end of the operational amplifier I through a wire and the resistor R3, one end of the resistor R4 is connected to the positive input end of the operational amplifier I, the other end of the resistor R4 is connected to the output end of the operational amplifier I, the output end of the operational amplifier I is connected to the negative input end of the operational amplifier II through the resistor R5, the positive input end of the operational amplifier II is connected to a VCC, the output end of the operational amplifier II is connected with the base of the triode through a wire and the resistor R2, and the emitter of the triode is connected back to the collector of the triode through a wire, the supercapacitor single body and the resistor R1. The novel supercapacitor voltage sharing circuit solves the problems that the difference between the supercapacitor single body and a single body can not be fed back and the voltage sharing speed is low in the prior art.
Description
Technical field
The present invention relates to ultracapacitor technical field, in particular a kind of novel super capacitor equalizer circuit.
Background technology
Along with the outstanding request of environmental problem and the development of new technology, new-energy automobile, special vehicle arise at the historic moment, these vehicle launch electric power systems are used super capacitor to solve high-power problem of moment in a large number, thereby significantly improving service lifetime of accumulator, is current urgent problem for the technology of pressure equalization of super capacitor.
Super capacitor monomer is because monomer is withstand voltage lower, generally in 2.8V left and right.Use in actual applications, all far surpass this voltage, so need a plurality of monomer series-connected uses, need to use equalizer circuit simultaneously.Equalizer circuit has two kinds, and a kind of is passive all pressures; A kind of is initiatively all to press.Wherein initiatively all press because the speed of all pressing is fast, all pressure energy power is strong, is more and more used.The working condition of these two kinds of equalizer circuits, only depends on and the monomer voltage of super capacitor can not feed back the difference between monomer and monomer, cause differing greatly of different monomers voltage, pressure rate is slower.
Summary of the invention
The problems such as the problems referred to above that exist for solving prior art, the invention provides a kind of novel super capacitor equalizer circuit, have solved and can not feed back the difference between super capacitor monomer and monomer in prior art, and pressure rate is slower.
For achieving the above object, concrete scheme of the present invention is as follows:
A novel super capacitor equalizer circuit, comprising: resistance, operational amplifier, triode, super capacitor monomer, the negative input end of described operational amplifier I is in order to input monomer reference voltage, module reference voltage inputs to the positive input terminal of operational amplifier I through resistance R 3 by wire, one end of resistance R 4 is connected to the positive input terminal of operational amplifier I, its other end is connected to the output of operational amplifier I, the output of operational amplifier I is connected to the negative input end of operational amplifier II through resistance R 5, the positive input terminal of operational amplifier II is connected to VCC, its output is connected with the base stage of triode through R2 by wire, the emitter of triode takes back the collector electrode to triode by wire through super capacitor monomer and resistance R 1, described operational amplifier I and the positive power terminal of operational amplifier II meet VCC, its negative power source terminal ground connection,
Described module reference voltage is the total voltage of serial connected super electric capacity monomer and the difference of module protection voltage;
Described monomer reference voltage is electric capacity monomer protection voltage.
A novel super capacitor equalizer circuit, its workflow is:
When super capacitor monomer voltage reaches Vc1, operational amplifier is started working, and by the control to Vc1 and discharge curve, guarantees that the impedance of each electric capacity monomer is dynamically consistent, and equalizing current is started from scratch with the non-linear increase of electric capacity both end voltage; Also can pass through multiplication factor and the resistance R 2 of triode, guarantee that the impedance of each electric capacity monomer is dynamically consistent, equalizing current is started from scratch to be increased with electric capacity both end voltage is linear;
When super capacitor monomer voltage reaches Vc2, it is maximum that equalizing current reaches, and equalizing current no longer increases with the increase of super capacitor monomer both end voltage;
Described Vc1 and Vc2 are determined jointly by the total voltage of super capacitor monomer voltage, monomer reference voltage, serial connected super electric capacity monomer;
Equalizing current can, according to the linearity curve in Fig. 2 from the zero maximum that is increased to, also can, according to the nonlinear curve in Fig. 2 from the zero maximum that is increased to, can also be increased to maximum from zero according to the stepped curve in Fig. 1.
Beneficial effect of the present invention is: a kind of novel super capacitor equalizer circuit, solved the problem that super capacitor system causes partition capacitance overvoltage to damage in charge and discharge process, extend the useful life of super capacitor module, improved the functional reliability of super capacitor module; This circuit is realized simple, has good all pressures effect, makes at any time super capacitor monomer voltage consistent, thereby has guaranteed that pressure rate is very fast.
Accompanying drawing explanation
The present invention has accompanying drawing 2 width.
Fig. 1 is traditional equilibrium curve and the comparison diagram of equilibrium curve of the present invention, and a is traditional equilibrium curve, and b is equilibrium curve of the present invention;
Fig. 2 is super capacitor equalizer circuit schematic diagram.
Sequence number explanation in figure: 1, operational amplifier I, 2, operational amplifier II, 3, triode, 4, super capacitor monomer.
Embodiment
Below in conjunction with the present embodiment, the present invention is further described:
A novel super capacitor equalizer circuit, comprising: resistance, operational amplifier, triode 3, super capacitor monomer 4, the negative input end of described operational amplifier I 1 is in order to input monomer reference voltage, module reference voltage inputs to the positive input terminal of operational amplifier I 1 through resistance R 3 by wire, one end of resistance R 4 is connected to the positive input terminal of operational amplifier I 1, its other end is connected to the output of operational amplifier I 1, the output of operational amplifier I 1 is connected to the negative input end of operational amplifier II 2 through resistance R 5, the positive input terminal of operational amplifier II 2 is connected to VCC, its output is connected with the base stage of triode 3 through R2 by wire, the emitter of triode 3 takes back to the collector electrode of triode 3 through super capacitor monomer 4 and resistance R 1 by wire, described operational amplifier I 1 and the positive power terminal of operational amplifier II 2 meet VCC, its negative power source terminal ground connection,
Described module reference voltage is the total voltage of serial connected super electric capacity monomer 4 and the difference of module protection voltage;
Described monomer reference voltage 4 is electric capacity monomer protection voltage.
A novel super capacitor equalizer circuit, its workflow is:
When super capacitor monomer 4 voltages reach Vc1, operational amplifier is started working, and by the control to Vc1 and discharge curve, guarantees that the impedance of each electric capacity monomer is dynamically consistent, and equalizing current is started from scratch with the non-linear increase of electric capacity both end voltage; Also can pass through multiplication factor and the resistance R 2 of triode 3, guarantee that the impedance of each electric capacity monomer is dynamically consistent, equalizing current is started from scratch to be increased with electric capacity both end voltage is linear;
When super capacitor monomer voltage 4 reaches Vc2, it is maximum that equalizing current reaches, and equalizing current no longer increases with the increase of super capacitor monomer both end voltage;
Described Vc1 and Vc2 are determined jointly by the total voltage of super capacitor monomer voltage 4, monomer reference voltage, serial connected super electric capacity monomer 4;
Equalizing current can, according to the linearity curve in Fig. 2 from the zero maximum that is increased to, also can, according to the nonlinear curve in Fig. 2 from the zero maximum that is increased to, can also be increased to maximum from zero according to the stepped curve in Fig. 1.
Claims (3)
1. a novel super capacitor equalizer circuit, is characterized in that comprising: resistance, operational amplifier, triode (3), super capacitor monomer (4), the negative input end of described operational amplifier I (1) is in order to input monomer reference voltage, module reference voltage inputs to the positive input terminal of operational amplifier I (1) through resistance R 3 by wire, one end of resistance R 4 is connected to the positive input terminal of operational amplifier I (1), its other end is connected to the output of operational amplifier I (1), the output of operational amplifier I (1) is connected to the negative input end of operational amplifier II (2) through resistance R 5, the positive input terminal of operational amplifier II (2) is connected to VCC, its output is connected with the base stage of triode (3) through R2 by wire, the emitter of triode (3) takes back to the collector electrode of triode (3) through super capacitor monomer (4) and resistance R 1 by wire, described operational amplifier I (1) and the positive power terminal of operational amplifier II (2) meet VCC, its negative power source terminal ground connection,
Described module reference voltage is the total voltage of serial connected super electric capacity monomer (4) and the difference of module protection voltage;
Described monomer reference voltage is electric capacity monomer protection voltage.
2. a kind of novel super capacitor equalizer circuit according to claim 1, is characterized in that: workflow is:
When super capacitor monomer (4) voltage reaches Vc1, operational amplifier is started working, and by the control to Vc1 and discharge curve, guarantees that the impedance of each electric capacity monomer is dynamically consistent, and equalizing current is started from scratch with the non-linear increase of electric capacity both end voltage; Also can pass through multiplication factor and the resistance R 2 of triode (3), guarantee that the impedance of each electric capacity monomer is dynamically consistent, equalizing current is started from scratch to be increased with electric capacity both end voltage is linear;
When super capacitor monomer (4) voltage reaches Vc2, it is maximum that equalizing current reaches, and equalizing current no longer increases with the increase of super capacitor monomer (4) both end voltage.
3. a kind of novel super capacitor equalizer circuit according to claim 2, is characterized in that: described Vc1 and Vc2 are determined jointly by the total voltage of super capacitor monomer (4) voltage, monomer reference voltage, serial connected super electric capacity monomer (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310604355.7A CN103607011B (en) | 2013-11-23 | 2013-11-23 | Novel supercapacitor voltage sharing circuit |
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| CN201310604355.7A CN103607011B (en) | 2013-11-23 | 2013-11-23 | Novel supercapacitor voltage sharing circuit |
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| CN103607011A true CN103607011A (en) | 2014-02-26 |
| CN103607011B CN103607011B (en) | 2015-06-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986308A (en) * | 2014-05-04 | 2014-08-13 | 清华大学 | Dynamic voltage-sharing circuit of direct-current capacitor of multilevel converter |
| CN106936366A (en) * | 2017-05-12 | 2017-07-07 | 哈尔滨工业大学 | A kind of energy recovery control system of the variable-frequency washing machine based on super capacitor |
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| CN102570622A (en) * | 2011-12-30 | 2012-07-11 | 合肥同智机电控制技术股份有限公司 | Voltage-sharing device of super capacitors |
| CN102662115A (en) * | 2012-05-07 | 2012-09-12 | 中国电力科学研究院 | Online monitoring circuit and method for series compensation spark gap voltage divider loop |
| CN203071609U (en) * | 2012-12-16 | 2013-07-17 | 常州市巨泰电子有限公司 | Super-capacitor equalizing circuit |
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2013
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Patent Citations (5)
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| JPH0424567A (en) * | 1990-05-18 | 1992-01-28 | Maspro Denkoh Corp | Battery consumption alarm circuit in battery-operated apparatus |
| CN101674018A (en) * | 2009-10-09 | 2010-03-17 | 南京航空航天大学 | Multi-module combined converter and soft start control method thereof |
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| CN102662115A (en) * | 2012-05-07 | 2012-09-12 | 中国电力科学研究院 | Online monitoring circuit and method for series compensation spark gap voltage divider loop |
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| 孟丽囡等: "超级电容器串联应用中的均压问题及解决方案", 《辽宁工学院学报》, vol. 25, no. 1, 28 February 2005 (2005-02-28) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986308A (en) * | 2014-05-04 | 2014-08-13 | 清华大学 | Dynamic voltage-sharing circuit of direct-current capacitor of multilevel converter |
| CN103986308B (en) * | 2014-05-04 | 2017-04-05 | 清华大学 | A kind of dynamic voltage-balancing of Multilevel Inverters DC capacitor |
| CN106936366A (en) * | 2017-05-12 | 2017-07-07 | 哈尔滨工业大学 | A kind of energy recovery control system of the variable-frequency washing machine based on super capacitor |
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| CN103607011B (en) | 2015-06-17 |
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Effective date of registration: 20190730 Address after: 116600 Dalian City, Liaoning Province, China (Liaoning) Free Trade Pilot Zone Dalian Economic and Technological Development Zone Life Road 39-13-2, -3, -4 Patentee after: Dalian Shangjia New Energy Technology Co., Ltd. Address before: 116600 Liaoning Dalian Development Zone, double D, five street, building 1, Dalian still able to science and Technology Development Co., Ltd. Patentee before: Dalian Shinergy Science and Technology Development Co., Ltd. |
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