CN104795859A - Super-capacitor constant-power charge management circuit - Google Patents
Super-capacitor constant-power charge management circuit Download PDFInfo
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- CN104795859A CN104795859A CN201510161696.0A CN201510161696A CN104795859A CN 104795859 A CN104795859 A CN 104795859A CN 201510161696 A CN201510161696 A CN 201510161696A CN 104795859 A CN104795859 A CN 104795859A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a charge circuit technology, in particular to a super-capacitor constant-power charge management circuit. The super-capacitor constant-power charge management circuit has the advantages that the magnitude of currents can be sensed by a current sensor, on-off keys can be turned on under the control of a power management unit and a voltage controller when the currents reach a certain small value or set peak values, accordingly, electricity inputted by an inductor L and a power source can be transferred to a capacitor C1, and a super-capacitor C<O> can be charged by constant power of the capacitor C1; float charge or repeated charge functions can be switched over according to difference of values of voltages on the super-capacitor C<O>, and accordingly problems of incapability of adapting to long-time high-current charge of an existing super-capacitor, low charge rate after series resistors are added to circuits and long charge time can be solved.
Description
Technical field
The present invention relates to a kind of charging circuit technology, particularly relate to a kind of super capacitor invariable power charge management circuit.
Background technology
Super capacitor carrys out energy storage by polarized electrolytic matter, has power density high (10 ~ 100 times for battery), working temperature wide (-40 DEG C ~+65 DEG C), discharge and recharge reliability is high, long service life, supports Rapid Circulation discharge and recharge, can hundreds thousand of times of repeated charge.Super capacitor generally uses active carbon electrode material, there is adsorption area large, electrostatic stores many features, be widely used in the brake system energy regenerating energy storage device such as design of feeder automation terminal back-up source, new forms of energy and subway, high ferro, automobile, the igniter etc. of the engine such as electronic toy, shipping vehicle.
Utilize existing constant voltage or constant-current charging power to carry out the very large super capacitor of opposite end change in voltage and carry out the larger difficulty of charging existence, mostly can not adapt to the large current charge of long period.Existing solution in charge circuit, increases series resistance carry out current limliting, but the energy loss that the method is extra because series resistance creates, cause charge efficiency very low, thus the charging interval is extended.Therefore, the charging problems how solving super capacitor better under the prerequisite utilizing original constant voltage or constant current charge source circuit becomes a problem demanding prompt solution.
Summary of the invention
For the above-mentioned problems in the prior art, now provide a kind of and be intended to realize utilizing existing constant voltage or constant current charge source circuit to realize the management circuit efficiently charged to super capacitor.
The present invention solves the technical scheme that its technical problem takes:
A kind of super capacitor invariable power charge management circuit, comprising:
Power supply is used for providing electric energy;
Controller is connected to the two ends of described power supply;
The controllable two ends being connected to described controller of super capacitor Co, for the controllable charge or discharge of described controller;
Above-mentioned controller comprises:
Inductance L is connected between described power input and output, for storing and transmission of electric energy;
Electric capacity C1 is series between described inductance L and described power output end, for receiving and store electrical energy;
First K switch 1, is series between inductance L and described power cathode, for controllable folding circuit;
Second switch K2, between the positive pole being connected to described electric capacity C1 positive pole and described super capacitor Co, for controllable folding circuit;
3rd K switch 3, is connected between the negative pole of described inductance L and the positive pole of described super capacitor Co, for controllable folding circuit;
Control unit connects the control end of described first K switch 1, the control end of described second switch K2 and described power cathode respectively, for according to the electric current of described power cathode and the voltage of described super capacitor Co, control described first K switch 1 and described second switch K2 closed or disconnect;
Voltage controller, connect the control end of described 3rd K switch 3, the positive pole of described super capacitor Co and described control unit respectively, for the voltage according to described super capacitor Co, control described 3rd K switch 3 close or disconnect, and the voltage of described super capacitor Co is sent to described control unit.
Above-mentioned controller also comprises diode D1, connects and between described inductance L and described electric capacity C1, produces adverse current for preventing during charging.
Above-mentioned power supply is constant voltage/constant current power supply.
Above-mentioned super capacitor invariable power charge management circuit, also comprises lead-acid batteries, is parallel to described both ends of power with described super capacitor group, for receiving and storage of electrical energy.
Above-mentioned super capacitor invariable power charge management circuit, also comprises load, is parallel to described both ends of power with described super capacitor group, for receiving the electric energy of described super capacitor module release.
Above-mentioned super capacitor invariable power charge management circuit, also comprise a kind of control method of super capacitor invariable power Charge Management, concrete steps are as follows:
Control unit described in step S1. produces control signal and closes described first K switch 1;
Step S2. is when the electric current in described inductance L reaches the first current threshold, and described control unit exports the first control signal and closes described second switch K2, and described electric capacity C1 is charged to described super capacitor Co;
Voltage controller described in step S3. judges whether the voltage of described super capacitor Co reaches the second voltage threshold, as reached, goes to step S6;
Step S4. is when electric current continues to rise to the second current threshold, and described control unit exports the second control signal and disconnects described first K switch 1 and described second switch K2, and described power supply is charged to described electric capacity C1 by described inductance L;
Step S5., when the voltage of described electric capacity arrives the first voltage threshold, goes to step S1;
Voltage controller described in step S6. exports control signal and closes described 3rd K switch 3, and makes described control unit disconnect described first K switch 1 and described second switch K2, makes described super capacitor Co carry out floating charge by described power supply;
Step S7., when the voltage on described super capacitor Co is lower than the second voltage threshold, goes to step S1.
The invention has the beneficial effects as follows: accelerate charging rate, reduce the wastage, can not produce power circuit and impact.Solve the large current charge that super capacitor can not adapt to the long period, solve charge rate after loop increases series resistance very low, the problem that the charging interval is longer.
Accompanying drawing explanation
Fig. 1 is charge management circuit figure;
Fig. 2 is charge management circuit
Fig. 3 is super capacitor charging circuit figure;
Electric current, V diagram corresponding during Fig. 4 controller control switch.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
As shown in Figure 1, a kind of super capacitor invariable power charge management circuit, comprise constant voltage/constant current power supply 1, controller 2 is connected to power supply 1 two ends, and the controllable two ends being connected to controller 2 of super capacitor Co, for the controllable charge or discharge of described controller 2, load 4 and lead-acid batteries 3 are parallel to power supply 1 two ends with super capacitor Co, or as shown in Figure 2 also can according to service condition by load 4 directly and super capacitor Co be parallel to power supply 1 two ends.
Utilize that super capacitor is in parallel with lead acid accumulator to be applied, effectively can promote the power density of back-up source, improve the effect etc. of low temperature environment.When after externally fed power loss, when the back-up source of these two kinds of energy storage device mixing application carries out heavy-current discharge, super capacitor can help to alleviate back-up source terminal voltage and decline, the useful life of favourable prolongation lead acid accumulator, and by reducing the capacity configuration demand of lead acid accumulator, investment reduction cost.
Above-mentioned controller 2 comprises as shown in Figure 3:
Inductance L, is connected between power supply 1 input and output, for storing and transmission of electric energy;
Electric capacity C1, is series between inductance L and power supply 1 output, for receiving and store electrical energy;
First K switch 1, is series between inductance L and power supply 1 negative pole, for controllable folding circuit;
Second switch K2, between the positive pole being connected to electric capacity C1 positive pole and super capacitor Co, for controllable folding circuit;
3rd K switch 3, is connected between the negative pole of inductance L and the positive pole of super capacitor Co, for controllable folding circuit;
Control unit 5, connects the control end of the first K switch 1, the control end of second switch K2 and power supply 1 negative pole respectively, for according to the electric current of power supply 1 negative pole and the voltage of super capacitor Co, control the first K switch 1 and second switch K2 closed or disconnect;
Voltage controller 6, connect the control end of the 3rd K switch 3, the positive pole of super capacitor Co and control unit 5 respectively, for the voltage according to super capacitor Co, control the 3rd K switch 3 and close or disconnect, and the voltage of super capacitor Co is sent to described control unit 5.
Shown in composition graphs 4
When circuit starts to charge, control unit 5 produces pulse enable signal K switch 1 and closes, and wherein control unit 5 realizes by power management chip, the electric current linear growth at this moment in inductance L, and control unit 5 detects the size of inductance L electric current, when electric current reaches the first current threshold Io, control unit 5 exports the first control signal makes K switch 2 close, because the capacity of super capacitor Co is much larger than electric capacity C1, electricity on electric capacity C1 is all transferred to by the super capacitor Co that charges, completes the charging process of electric capacity C1 to super capacitor Co, when electric current in inductance L continues to rise to the second current threshold I, control unit 5 exports the second control signal cut-off switch K1 and K switch 2, at this moment, the electricity that electricity in inductance L and power supply 1 input forwards on electric capacity C1, the voltage of electric capacity C1 is made to increase gradually, once charge until complete electric capacity C1, when control unit 5 detects the electric current of inductance L lower than the first current threshold Io, control unit 5 sends control signal Closing Switch K1 again, start the new charging process once of super capacitor Co, electricity is constantly transferred on super capacitor Co by electric capacity C1, thus, alternately complete the charging process to electric capacity C1 and super capacitor Co.Due to the energy constant that electric capacity C1 shifts to super capacitor Co, the terminal voltage therefore for super capacitor Co can realize invariable power charging from 0 volt to rated voltage.In the process, whether voltage controller 6 voltage detected on super capacitor Co reaches the second voltage threshold Vx, then continuation said process as do not reached is that super capacitor Co charges, this charging rate is fast, can the charging ability of hectowatt grade to capacitor charging, owing to adopting harmless reactance component, charge efficiency is high and loss is very low.
When the voltage that voltage controller 6 detects on super capacitor Co reaches the second voltage threshold Vx when the gap of 1 ~ 2 volt (general and power supply 1 rated value have), voltage controller 6 sends control signal makes the 3rd K switch 3 close, and make control unit 5 disconnect the first K switch 1 and second switch K2, make super capacitor Co directly access power supply 1 and carry out floating charge, inductance L is saturated is equivalent to short circuit, now can not produce larger charging current, can not produce power circuit and impact; When voltage controller 6 detects that voltage on super capacitor Co is lower than (this first voltage threshold is adjustable) during the first voltage threshold V, voltage controller 6 sends control signal makes the 3rd K switch 3 disconnect, and electric capacity C1 starts the charging process to super capacitor Co.
Arranging a diode D1 in above-mentioned super capacitor invariable power charge management circuit is connected between inductance L and electric capacity C1, produces adverse current for preventing during charging.
Above-mentioned super capacitor invariable power charge management circuit comprises a kind of control method of super capacitor invariable power Charge Management, and concrete steps are:
Control unit 5 described in step S1. produces control signal and closes described first K switch 1;
Step S2. is when the electric current in described inductance L reaches the first current threshold, and described control unit 5 exports the first control signal and closes described second switch K2, and described electric capacity C1 is charged to described super capacitor Co;
Voltage controller 6 described in step S3. judges whether the voltage of described super capacitor Co reaches the second voltage threshold, as reached, goes to step S6;
Step S4. is when electric current continues to rise to the second current threshold, and described control unit 5 exports the second control signal and disconnects described first K switch 1 and described second switch K2, and described power supply 1 is charged to described electric capacity C1 by described inductance L;
Step S5., when the voltage of described electric capacity arrives the first voltage threshold, goes to step S1;
Voltage controller 6 described in step S6. exports control signal and closes described 3rd K switch 3, and makes described control unit 5 disconnect described first K switch 1 and described second switch K2, makes described super capacitor Co carry out floating charge by described power supply 1;
Step S7., when the voltage on described super capacitor Co is lower than the second voltage threshold, goes to step S1.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations specification of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (7)
1. a super capacitor invariable power charge management circuit, is characterized in that, comprising:
One power supply, for providing electric energy;
One controller, is connected to the two ends of described power supply;
One super capacitor (Co), the controllable two ends being connected to described controller, for the controllable charge or discharge of described controller.
2. super capacitor invariable power charge management circuit as claimed in claim 1, it is characterized in that, described controller comprises:
One inductance (L), is connected between described power input and output, for storing and transmission of electric energy;
One electric capacity (C1), is series between described inductance (L) and described power output end, for receiving and store electrical energy;
One first switch (K1), is series between inductance (L) and described power cathode, for controllable folding circuit;
One second switch (K2), between the positive pole being connected to described electric capacity (C1) positive pole and described super capacitor (Co), for controllable folding circuit;
One the 3rd switch (K3), is connected between the negative pole of described inductance (L) and the positive pole of described super capacitor (Co), for controllable folding circuit;
One control unit, connect the control end of described first switch (K1), the control end of described second switch (K2) and described power cathode respectively, for according to the electric current of described power cathode and the voltage of described super capacitor (Co), control described first switch (K1) and described second switch (K2) closed or disconnect;
One voltage controller, connect the described control end of the 3rd switch (K3), the positive pole of described super capacitor (Co) and described control unit respectively, for the voltage according to described super capacitor (Co), control described 3rd switch (K3) close or disconnect, and the voltage of described super capacitor (Co) is sent to described control unit.
3. super capacitor invariable power charge management circuit as claimed in claim 2, it is characterized in that, described controller comprises
One diode (D1), connects and between described inductance (L) and described electric capacity (C1), produces adverse current for preventing during charging.
4. super capacitor invariable power charge management circuit as claimed in claim 1, it is characterized in that, described power supply is constant voltage/constant current power supply.
5. super capacitor invariable power charge management circuit as claimed in claim 1, is characterized in that, also comprise lead-acid batteries, be parallel to described both ends of power with described super capacitor, for receiving and storage of electrical energy.
6. super capacitor invariable power charge management circuit as claimed in claim 1, is characterized in that, also comprise load, be parallel to described both ends of power with described super capacitor, for receiving the electric energy of described super capacitor release.
7. a control method for super capacitor invariable power Charge Management, is characterized in that, for the arbitrary super capacitor invariable power charge management circuit as described in claim 1 ~ 6, concrete steps are as follows:
Control unit described in step S1. produces control signal and closes described first switch (K1);
Step S2. is when the electric current on described inductance (L) reaches the first current threshold, described control unit exports the first control signal and closes described second switch (K2), and described electric capacity (C1) is charged to described super capacitor (Co);
Voltage controller described in step S3. judges whether the voltage of described super capacitor (Co) reaches the second voltage threshold, as reached, goes to step S6;
Step S4. is when electric current continues to rise to the second current threshold, described control unit exports the second control signal and disconnects described first switch (K1) and described second switch (K2), and described power supply is charged to described electric capacity (C1) by described inductance (L);
Step S5., when the voltage of described electric capacity arrives the first voltage threshold, goes to step S1;
Voltage controller described in step S6. exports control signal and closes described 3rd switch (K3), and make described control unit disconnect described first switch (K1) and described second switch (K2), make described super capacitor (Co) carry out floating charge by described power supply;
Step S7., when the voltage on described super capacitor (Co) is lower than the second voltage threshold, goes to step 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510161696.0A CN104795859B (en) | 2015-04-07 | 2015-04-07 | A kind of super capacitor invariable power charge management circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510161696.0A CN104795859B (en) | 2015-04-07 | 2015-04-07 | A kind of super capacitor invariable power charge management circuit |
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| CN104795859A true CN104795859A (en) | 2015-07-22 |
| CN104795859B CN104795859B (en) | 2017-11-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110304260A (en) * | 2019-07-16 | 2019-10-08 | 上海工程技术大学 | The distributed recovery system of electrostatic charge when a kind of unmanned plane during flying |
| CN112242704A (en) * | 2019-07-16 | 2021-01-19 | 致茂电子(苏州)有限公司 | Voltage maintaining circuit |
| CN113809814A (en) * | 2021-09-14 | 2021-12-17 | 南京林洋电力科技有限公司 | Asynchronous charging and synchronous discharging double-backup power supply system |
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| CN203984042U (en) * | 2014-06-30 | 2014-12-03 | 广东梅雁吉祥水电股份有限公司 | A kind of super capacitor charge controller |
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| US20100156359A1 (en) * | 2008-12-20 | 2010-06-24 | Luke Lloyd Wardensky | Systems and methods of charging super-capacitors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110304260A (en) * | 2019-07-16 | 2019-10-08 | 上海工程技术大学 | The distributed recovery system of electrostatic charge when a kind of unmanned plane during flying |
| CN112242704A (en) * | 2019-07-16 | 2021-01-19 | 致茂电子(苏州)有限公司 | Voltage maintaining circuit |
| CN112242704B (en) * | 2019-07-16 | 2023-09-29 | 致茂电子(苏州)有限公司 | Voltage maintaining circuit |
| CN113809814A (en) * | 2021-09-14 | 2021-12-17 | 南京林洋电力科技有限公司 | Asynchronous charging and synchronous discharging double-backup power supply system |
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| CN104795859B (en) | 2017-11-21 |
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