CN102570622A - Voltage-sharing device of super capacitors - Google Patents
Voltage-sharing device of super capacitors Download PDFInfo
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- CN102570622A CN102570622A CN2011104519108A CN201110451910A CN102570622A CN 102570622 A CN102570622 A CN 102570622A CN 2011104519108 A CN2011104519108 A CN 2011104519108A CN 201110451910 A CN201110451910 A CN 201110451910A CN 102570622 A CN102570622 A CN 102570622A
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Abstract
The invention discloses a voltage-sharing device of super capacitors and relates to an electric control system for a new energy automobile and a special vehicle, in particular to a balancing technology for super capacitors used in a power supply system for starting up the new energy automobile and the special vehicle. The voltages of the super capacitors are acquired at the input end of a sample conditioning unit and connected to a signal processing control unit after being amplified by a differential amplifier; the processing control unit outputs a control signal to control a voltage-sharing execution unit; and the voltage-sharing execution unit controls to share the voltages of the super capacitors. The voltage-sharing device is suitable for sharing the voltages of series-connection super capacitors with different voltage grades. The amount of the voltage-sharing circuits is selected according to the amount of the series-connection super capacitors; the voltage-sharing range is wide, and the voltage-sharing circuits can work after the voltages of the super capacitors exceed 1V; and the voltage-sharing device is high in reliability, long in voltage-sharing time and capable of properly reducing the voltage-sharing current, reducing the heat capacity and the temperature of each voltage-sharing circuit and improving the reliability.
Description
Technical field
The present invention relates to new-energy automobile, special vehicle electric-control system, the even technology of the super capacitor that especially uses in such vehicle launch electric power system.
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 use super capacitor to solve high-power problem of moment in a large number; Thereby significantly improving storage battery useful life, is present urgent problem to the technology of pressure equalization of super capacitor.In the super capacitor technology of pressure equalization, method for equalizing voltage commonly used is an amplitude limit type equalizer circuit, adopts the protection point of electric resistance partial pressure super capacitor voltage and setting to compare, and all presses through comparison circuit upset control discharge circuit.Its shortcoming: the one, all press narrow range, only the equal pressure point of super capacitor to after just it is all pressed, the charging most of process in equalizer circuit be idle; The 2nd, all press weak effect, when super capacitor in the large current charge process, the pressure rate of equalizer circuit is too slow, can make super capacitor get into overvoltage protection soon, the super capacitor high current charge-discharge is used be restricted.
Summary of the invention
The pressure-equalizing device that the purpose of this invention is to provide a kind of reliable wide region super capacitor; Through the voltage of sampling super capacitor, omnidistance enforcement all pressed in operating voltage range, extended and all pressed the time; Reduce equalizing current, helped the thermal design and raising reliability of equalizer circuit.
For realizing the foregoing invention purpose; Technical scheme of the present invention is following: a kind of pressure-equalizing device of super capacitor; It is characterized in that: the input of sampling conditioning unit is gathered super capacitor voltage; After difference is amplified, be connected to signal processing control unit, performance element is all pressed in the control of processing and control element (PCE) output control signal, all presses performance element control super capacitor all to press.
The present invention has the following advantages: the super capacitor series average-voltage that 1, is suitable for different electric pressures.Select the way of equalizer circuit to get final product according to serial connected super electric capacity quantity; 2, all press wide ranges, after super capacitor voltage surpassed 1V, equalizer circuit just can be worked; 3, reliability is high, all the pressure time long, can suitably reduce equalizing current, reduce the design of equalizer circuit thermal capacity, reduced the equalizer circuit temperature rise, improved reliability.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
In conjunction with Fig. 1,2; A kind of pressure-equalizing device of super capacitor; The input of sampling conditioning unit 10 is gathered super capacitor voltage; After difference is amplified, be connected to signal processing control unit 20, performance element 30 is all pressed in processing and control element (PCE) 20 output control signal controls, all presses performance element 30 control super capacitors all to press.
More concrete scheme is; Described sampling conditioning unit 10 comprises transport and placing device; Transport and placing device comprises amplifier N1A, amplifier N1B, is connected to the AD input of signal processing control unit 20 by amplifier N1B output through amplifier N1A, amplifier N1B differential sample and amplification back.
Include difference and amplifying circuit that precision resistance and accurate amplifier are formed; Super capacitor voltage inserts the Chip Microcomputer A thief hatch through differential amplifier circuit; Signal processing control unit 20 can adopt single-chip microcomputer; The single-chip processor i/o mouth connects the control mouth of optocoupler, the driving triode of the output control discharge circuit of optocoupler, and the driving triode directly drives the discharge triode super capacitor is all pressed.
Concrete scheme is; The output termination of processing and control element (PCE) 20 constitutes the input of the optocoupler N3 that all presses performance element 30; The triode VT1, the triode VT2 that all press performance element 30 also to comprise to link to each other with the output of optocoupler N3; The E utmost point of triode VT1 is received the B utmost point of triode VT2, and the E of triode VT2 receives the negative pole of super capacitor.
Specify circuit theory in conjunction with Fig. 2, the anodal connecting resistance R1 of super capacitor, resistance R 1 other end receive 5 pin, resistance R 2 and the diode D1 positive pole of amplifier N1A, R2 other end ground connection, and diode D1 negative pole is received the 5V positive source; The super capacitor negative pole is received resistance R 3, resistance R 3 other ends receive amplifier N1A put 6 pin, resistance R 5 and diode D2 is anodal, diode D2 negative pole is received the 5V positive source, resistance R 5 is received amplifier N1A output 7 pin and resistance R 11 again; Amplifier N1A power supply is imported anodal 8 pin and is connect the 5V positive source, and amplifier N1A power supply input ground 4 pin connect the ground of 5V power supply, and capacitor C 1 is received the 5V power positive cathode; The other end of resistance R 11 is received amplifier N1B input 3 pin and capacitor C 2 in the same way; The other end of capacitor C 2 is received the ground and the resistance R 6 of 5V power supply; The other end of resistance R 6 is received amplifier N1B reverse input end 2 pin and resistance R 7; Resistance R 7 other ends are received amplifier N1B output 1 pin and resistance R 12, and the other end of resistance R 12 is received 3 pin, the capacitor C 3 of two-way TVS pipe N4 and constituted 26 pin of the single-chip microcomputer N2 of processing and control element (PCE) (20), and 2 pin of two-way TVS pipe N4 and 1 pin are received the anodal and ground of power supply 3.3V power supply respectively; The ground of another termination 3.3V power supply of capacitor C 3, wherein 5V power supply and 3.3V power supply are altogether.
The 4 pin connecting resistance R8 of described optocoupler N3; Resistance R 8 other ends are received the positive pole of super capacitor; 3 pin of optocoupler N3 connect B and the resistance R 9 of VT1, and resistance R 9 other ends are received the negative pole of super capacitor, and the C of the C of triode VT1, triode VT2 links to each other with resistance R 10; Resistance R 10 other ends are received the positive pole of super capacitor, and the E of triode VT1 receives the B of triode VT2.
The present invention can select precision resistance and accurate amplifier OPA2365 for use at the conditioning unit 10 of taking a sample, through differential sample with amplify after, deliver to 10 bit AD sample single-chip microcomputer P89LPC938FDH; Sampling super capacitor voltage is lower than 1V; FD is 0, and the discharge triode ends, and does not all press work; The voltage that surpasses 1V and serial connected super electric capacity when sampling super capacitor voltage is unequal, and corresponding FD is put 1 pair of high carrying out of super capacitor voltage all press, thus the dynamic voltage balancing of realization wide region.
Below sketch operation principle of the present invention: the voltage of super capacitor C is through resistance R 1, R2, R3, R5; Diode D1, D2 and the sampling of amplifier N1A difference; Differential sample super capacitor voltage is again through resistance R 11, R6, R7, and capacitor C 2 and amplifier N1B ratio are amplified, and difference, ratio are amplified back super capacitor magnitude of voltage and delivered to 10 bit AD sample precision single-chip microcomputer N2 through resistance R 12, capacitor C 3; Single-chip microcomputer N2 sampling super capacitor voltage is lower than 1V or super capacitor does not have uneven pressure situation; FD is 1, and discharge tube VT1 and VT2 end, and does not all press work; The voltage that surpasses 1V and serial connected super electric capacity when single-chip microcomputer N2 sampling super capacitor voltage is unequal; FD is put 0; Open discharge tube VT1 and VT2 through resistance R 4, R8, R9, R10, optocoupler N3, the carrying out that super capacitor voltage is high all pressed, thus the dynamic voltage balancing of realization wide region.
Claims (5)
1. the pressure-equalizing device of a super capacitor; It is characterized in that: the input of sampling conditioning unit (10) is gathered super capacitor voltage;, difference is connected to signal processing control unit (20) after amplifying; Performance element (30) is all pressed in the control of processing and control element (PCE) (20) output control signal, all presses performance element (30) control super capacitor all to press.
2. the pressure-equalizing device of super capacitor according to claim 1; It is characterized in that: described sampling conditioning unit (10) comprises transport and placing device; Transport and placing device comprises amplifier N1A, amplifier N1B, is connected to the AD input of signal processing control unit (20) by amplifier N1B output through amplifier N1A, amplifier N1B differential sample and amplification back.
3. the pressure-equalizing device of super capacitor according to claim 1 and 2; It is characterized in that: the output termination of processing and control element (PCE) (20) constitutes the input of the optocoupler N3 that all presses performance element (30); The triode VT1, the triode VT2 that all press performance element (30) also to comprise to link to each other with the output of optocoupler N3; The E utmost point of triode VT1 is received the B utmost point of triode VT2, and the E of triode VT2 receives the negative pole of super capacitor.
4. the pressure-equalizing device of super capacitor according to claim 2; It is characterized in that: the anodal connecting resistance R1 of super capacitor; Resistance R 1 other end is received 5 pin, resistance R 2 and the diode D1 positive pole of amplifier N1A, R2 other end ground connection, and diode D1 negative pole is received the 5V positive source; The super capacitor negative pole is received resistance R 3, resistance R 3 other ends receive amplifier N1A put 6 pin, resistance R 5 and diode D2 is anodal, diode D2 negative pole is received the 5V positive source, resistance R 5 is received amplifier N1A output 7 pin and resistance R 11 again; Amplifier N1A power supply is imported anodal 8 pin and is connect the 5V positive source, and amplifier N1A power supply input ground 4 pin connect the ground of 5V power supply, and capacitor C 1 is received the 5V power positive cathode; The other end of resistance R 11 is received amplifier N1B input 3 pin and capacitor C 2 in the same way; The other end of capacitor C 2 is received the ground and the resistance R 6 of 5V power supply; The other end of resistance R 6 is received amplifier N1B reverse input end 2 pin and resistance R 7; Resistance R 7 other ends are received amplifier N1B output 1 pin and resistance R 12, and the other end of resistance R 12 is received 3 pin, the capacitor C 3 of two-way TVS pipe N4 and constituted 26 pin of the single-chip microcomputer N2 of processing and control element (PCE) (20), and 2 pin of two-way TVS pipe N4 and 1 pin are received the anodal and ground of power supply 3.3V power supply respectively; The ground of another termination 3.3V power supply of capacitor C 3, wherein 5V power supply and 3.3V power supply are altogether.
5. the pressure-equalizing device of super capacitor according to claim 3; It is characterized in that: the 4 pin connecting resistance R8 of described optocoupler N3, resistance R 8 other ends are received the positive pole of super capacitor, and 3 pin of optocoupler N3 connect B and the resistance R 9 of VT1; Resistance R 9 other ends are received the negative pole of super capacitor; The C of the C of triode VT1, triode VT2 links to each other with resistance R 10, and resistance R 10 other ends are received the positive pole of super capacitor, and the E of triode VT1 receives the B of triode VT2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110451910.8A CN102570622B (en) | 2011-12-30 | 2011-12-30 | Voltage-sharing device of super capacitors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110451910.8A CN102570622B (en) | 2011-12-30 | 2011-12-30 | Voltage-sharing device of super capacitors |
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| CN102570622A true CN102570622A (en) | 2012-07-11 |
| CN102570622B CN102570622B (en) | 2014-03-26 |
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| CN201110451910.8A Active CN102570622B (en) | 2011-12-30 | 2011-12-30 | Voltage-sharing device of super capacitors |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607011A (en) * | 2013-11-23 | 2014-02-26 | 大连尚能科技发展有限公司 | Novel supercapacitor voltage sharing circuit |
| CN111799874A (en) * | 2020-08-10 | 2020-10-20 | 天津七一二通信广播股份有限公司 | Power management circuit of super capacitor and implementation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814773A (en) * | 2009-12-11 | 2010-08-25 | 北京工业大学 | Voltage balancing device of super capacitor bank and control method thereof |
| CA2712205A1 (en) * | 2009-08-07 | 2011-02-07 | Honda Motor Co., Ltd. | Power supply system |
| CN102025272A (en) * | 2009-09-17 | 2011-04-20 | 富士迈半导体精密工业（上海）有限公司 | Discharging circuit |
| CN202444331U (en) * | 2011-12-30 | 2012-09-19 | 合肥同智机电控制技术股份有限公司 | Voltage-sharing device of super capacitor |
-
2011
- 2011-12-30 CN CN201110451910.8A patent/CN102570622B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2712205A1 (en) * | 2009-08-07 | 2011-02-07 | Honda Motor Co., Ltd. | Power supply system |
| CN102025272A (en) * | 2009-09-17 | 2011-04-20 | 富士迈半导体精密工业（上海）有限公司 | Discharging circuit |
| CN101814773A (en) * | 2009-12-11 | 2010-08-25 | 北京工业大学 | Voltage balancing device of super capacitor bank and control method thereof |
| CN202444331U (en) * | 2011-12-30 | 2012-09-19 | 合肥同智机电控制技术股份有限公司 | Voltage-sharing device of super capacitor |
Non-Patent Citations (1)
| Title |
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| 刘和平等: "纯电动汽车电池组多路抗共模电压测量系统", 《自动化技术与应用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607011A (en) * | 2013-11-23 | 2014-02-26 | 大连尚能科技发展有限公司 | Novel supercapacitor voltage sharing circuit |
| CN103607011B (en) * | 2013-11-23 | 2015-06-17 | 大连尚能科技发展有限公司 | Novel supercapacitor voltage sharing circuit |
| CN111799874A (en) * | 2020-08-10 | 2020-10-20 | 天津七一二通信广播股份有限公司 | Power management circuit of super capacitor and implementation method thereof |
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| CN102570622B (en) | 2014-03-26 |
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Owner name: HEFEI TONGZHI ELECTROMECHANICAL CONTROL TECHNOLOGY Free format text: FORMER NAME: HEFEI TONGZHI ELECTRICAL CONTROL TECHNOLOGY CO., LTD. |
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Address after: 230088 No. 66 Yonghe Road, hi tech Zone, Anhui, Hefei Patentee after: HEFEI TONGZHI ELECTRICAL CONTROL TECHNOLOGY CO., LTD. Address before: High tech Zone Hefei city Anhui province 230088 Tianzhi Road No. 19 Patentee before: Hefei Tongzhi Electrical Control Technology Co., Ltd. |