CN202586442U - Charging device for super-capacitor - Google Patents
Charging device for super-capacitor Download PDFInfo
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- CN202586442U CN202586442U CN 201220224293 CN201220224293U CN202586442U CN 202586442 U CN202586442 U CN 202586442U CN 201220224293 CN201220224293 CN 201220224293 CN 201220224293 U CN201220224293 U CN 201220224293U CN 202586442 U CN202586442 U CN 202586442U
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- ultracapacitor
- control unit
- charging
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Abstract
The utility model discloses a charging device for a super-capacitor. In the charging device, a charging return circuit is formed by a super-capacitor, an energy source, a control unit and a sampling module. The super-capacitor is charged by the energy source through the control unit, a logic control module and a pulse width modulation module are arranged in the control unit, the sampling module collects voltage value and temperature value of the super-capacitor, the voltage value and the temperature value are fed back to the control unit, the voltage value and the temperature value are calculated and analyzed by the logic control module in the control unit, and the pulse width modulation module regulates width of charging pulse to a specified size so as to charge the super-capacitor. The charging device for the super-capacitor can regulate charging parameters flexibly in time according to charging states and environment temperature of the super-capacitor so as to protect the super-capacitor and exert performance of the super-capacitor maximally.
Description
Technical field:
The utility model relates to power supply and fills and put technical field, more specifically, refers in particular to a kind of charging device that is used for ultracapacitor.
Background technology:
Ultracapacitor is called double electric layer capacitor (EDLC) again; It is a kind of revolutionary novel energy-storing components and parts that have, and its distinctive low internal resistance, high magnification, high security and ultralow temperature performance can effectively remedy the deficiency on lead-acid battery, lithium ion battery and the conventional capacitor performance.Under the overall situation that the life idea that environmental protection, low-carbon (LC) are gone on a journey progressively is rooted in the hearts of the people, the primary selection when ultracapacitor has become equipment vendors' configuration power supply.
Ultracapacitor also has it self limitation; Himself very low ESR (equivalent series resistance) and the hard-core characteristic of charging current size, also brought a problem to the system integrator: the batter-charghing system of standard can not effectively charge to ultracapacitor.Because for charging system, the ultracapacitor parts show as a virtual short circuit electronic component.General charger all possesses short-circuit protection function, and when ultracapacitor was charged, short-circuit protection function can cut off the electric current that flows to ultracapacitor automatically; On the other hand, excessive electric current output also might be burnt charger and electric capacity, causes unnecessary potential safety hazard.In addition, the self-discharge characteristics of ultracapacitor also has tangible differently with general energy storage device, and when total voltage descends after 10%, the energy loss of following can reach 20%.
In order to solve these technical barriers, the scientific research team of lot of domestic and foreign has carried out many-sided trial.For example see that notification number is the Chinese patent document of CN101657947A; It discloses a kind of " charging method of double electric layer capacitor "; This method confirms that based on the comparison of energy storage device measuring voltage and preset voltage further charging perhaps stops charging process to electrochemical energy storage device.In addition, see that notification number is the Chinese patent document of CN1813385A, it discloses a kind of " being used for the quick-charging circuit to the power model charging ".This charging device comprises power model, energy source and control circuit.Wherein control circuit comprises pulse width modulator and inductance element.Control circuit is coupled to power model and energy source, and the partial charging period will offer said power model than the high current level of current level of said energy source output to be directed against at least.Moreover patent announcement number has proposed a kind of " improving the method for ultracapacitor charge efficiency " for CN102105957A Chinese patent document, and this method adopts different electric currents that ultracapacitor is charged according to the voltage signal of ultracapacitor.When improving charge efficiency, can not reduce the duration of charging yet.
Above-mentioned three patents are studied the charging process of ultracapacitor from several aspects such as state-of-charge, power transfer module, control method and charge efficiency of ultracapacitor respectively; Their achievement for the serviceability that improves ultracapacitor, increase the service life and improve charge efficiency and played certain positive role, but still can't solve following problem:
The first, the operating voltage that can not guarantee ultracapacitor is between full voltage and half voltage, thereby the operating state of " inferior health " might appear in ultracapacitor;
The second, can not be according to the in good time adjustment charging current of parameters such as the own characteristic of ultracapacitor and scene temperature, voltage or voltage and the adjustment of making charge mode;
The 3rd, in step applied environment, can't judge the state-of-charge of ultracapacitor timely and provide corresponding benefit electric measure.
The utility model improves prior art to above-mentioned several problems.
The utility model content
The utility model technical problem to be solved just is to overcome the deficiency of prior art, and a kind of charging device that is used for ultracapacitor is provided, and this device can be taked different charging modes ultracapacitor is charged in the different charging periods.
For solving the problems of the technologies described above; The utility model has adopted following technical scheme: this charging device comprises: ultracapacitor, energy source, control unit, the sampling module of electric energy are provided for ultracapacitor; Described ultracapacitor, energy source, control unit, sampling module constitute a charge circuit; Wherein energy source charges to ultracapacitor through control unit; Include Logic control module and pulse width modulation module in this control unit; Sampling module feeds back to control unit after voltage, the Temperature numerical of ultracapacitor are gathered, and after calculating, analyze through the Logic control module in the control unit, is that ultracapacitor charge to the width adjusting of charging pulse to specifying size by the pulse width modulation module.
Furthermore, in the technique scheme, described energy source is an AC power, and this AC power inserts charge circuit behind transformer and rectifier.
Furthermore, in the technique scheme, said control unit adopts the microprocessor that is built-in with Logic control module and pulse width modulation module.
Furthermore; In the technique scheme; Described sampling module comprises: power supply sample resistance and ultracapacitor sample resistance; Wherein the power supply sample resistance is made up of two parallel resistor, and power supply sample resistance one end is connected with ac power output, and its other end inserts the input pin of a correspondence of microprocessor; Described ultracapacitor sample resistance has two parallel resistor to constitute, and this ultracapacitor sample resistance one end is connected with ultracapacitor, and the other end inserts the input pin of a correspondence of microprocessor.
Furthermore, in the technique scheme, also be provided with a switch element in the said charge circuit, be switched on or switched off charge circuit, instruct with the pulsewidth adjustment that pulse width modulation module in the response microprocessor is sent through this switch element; Corresponding input pin of this switch element and microprocessor connects.
Furthermore, in the technique scheme, described ultracapacitor is parallelly connected with an inductance, under the switch element off-state, is the ultracapacitor charging by the electric energy that is stored on the inductance.
Furthermore, in the technique scheme, said switch element is connected with a protection diode; Described ultracapacitor is connected with another diode.
Furthermore, in the technique scheme, said ultracapacitor is the ultracapacitor monomer, or the ultracapacitor module that is made up of ultracapacitor monomer series/parallel.
After adopting technique scheme, the utility model is according to the performance characteristics of ultracapacitor and state-of-charge (S0C), proposes a kind ofly can take the charging device of different charging modes in difference period of charging.In the process that ultracapacitor is charged, sampling module adopts the voltage and the temperature of the machine-processed timing detection ultracapacitor of poll, and gives control unit through communication module with the signal feedback that collects; The voltage that the Logic control module basis of control unit receives, the SOC size that temperature signal calculates ultracapacitor.Calculate through control unit; Obtain the state-of-charge numerical value SOC of ultracapacitor; To and predefined SOC1 of sum and SOC2 value be done comparison (SOC1 ﹥ SOC2), taking different charge modes according to different comparative results then is that ultracapacitor charges.
The utility model has following beneficial effect compared with prior art: the charging device that the utility model provides; Can be according to the state-of-charge and the ambient temperature of ultracapacitor; Flexibly charge parameter is adjusted timely, to greatest extent the performance of capacitor for voltage protection and performance ultracapacitor.
Description of drawings:
Fig. 1 is the circuit theory diagrams of the utility model;
Fig. 2 is the circuit diagram of the utility model preferred embodiment;
Fig. 3 is the pulsewidth adjustment waveform sketch map of three kinds of charge modes of the utility model;
Fig. 4 is the ultracapacitor charging current and the change in voltage curve chart of the utility model.
Embodiment:
Below in conjunction with specific embodiment and accompanying drawing the utility model is further specified.
The utility model is according to the performance characteristics of ultracapacitor and state-of-charge (S0C), proposes a kind ofly can take the charging device of different charging modes in difference period of charging.
See shown in Figure 1ly, this charging device comprises: energy source 1, ultracapacitor 2, control unit 3, sampling module 4 and communication module 7.Wherein control unit 3 comprises: transducer 31, Logic control module 32 and pulse width modulation module 33.
Ultracapacitor 2 can adopt ultracapacitor monomer or ultracapacitor module.
In the process that ultracapacitor 2 is charged, sampling module 4 adopts the voltage and the temperature of the machine-processed timing detection ultracapacitor of poll, and gives control unit 3 through communication module 7 with the signal feedback that collects; The Logic control module 32 of control unit 3 calculates the SOC size of ultracapacitor 2 according to the voltage, the temperature signal that receive.Because ultracapacitor is different from common battery; As far as common battery; Calculate its state-of-charge and then need carry out the conversion of various complicacy; And the state-of-charge of ultracapacitor (SOC) constitutes simple function with voltage, can come out according to certain algorithm computation through in Logic control module 32, writing corresponding function.
Calculate through control unit 3; Obtain the state-of-charge numerical value SOC of ultracapacitor 2; To and predefined SOC1 of sum and SOC2 value be done comparison (SOC1 ﹥ SOC2), taking different charge modes according to different comparative results then is that ultracapacitor 2 charges.
Concrete charging method is following:
A, ultracapacitor 2 is connected with an energy source 1, for ultracapacitor 2 charge power supply is provided by this energy source 1;
The voltage of B, timing acquiring ultracapacitor 2 and temperature data, and the data of gathering are fed back to a control unit 3, this control unit 3 goes out the state-of-charge numerical value SOC of ultracapacitor 2 according to the data computation that receives;
C, two numerical value SOC1, SOC2 preset in above-mentioned numerical value SOC and the control unit 3 are compared, wherein SOC1 SOC2;
D, control unit 3 calculate the charging voltage and the charging current of ultracapacitor 2 needs according to comparative result, and send concrete modulation signal and give the pulse width modulation module 33 in the control unit 3;
E, pulse width modulation module 33 will be to the charging pulse width adjustment to the sizes that needs, and charge for ultracapacitor 2 through 3 converter in the control unit 31;
F, constantly repeat above-mentioned steps, accomplish charging or stop charging until ultracapacitor 2.
Referring to shown in Figure 3; If the SOC value is greater than SOC1; Logic control module 32 can send modulation signal C and give pulse width modulation module 33; Pulse width modulation module 33 is adjusted according to the control signal pulse-width that receives, and makes ultracapacitor 2 under the 3rd charge mode, to accept charging.
If the SOC value is less than SOC2; Logic control module 32 can send modulation signal A and give pulse width modulation module 33; Pulse width modulation module 33 is adjusted according to the control signal pulse-width that receives, and makes ultracapacitor 2 under first charge mode, to accept charging.
If the SOC value is less than SOC1 and greater than SOC2; Logic control module 32 can send modulation signal B and give pulse width modulation module 33; Pulse width modulation module 33 is adjusted according to the control signal pulse-width that receives, and makes ultracapacitor 2 under second kind of charge mode, to accept charging.
Explain in the face of above-mentioned three kinds of charge modes down.
Charging modes when said first kind of charge mode means ultracapacitor 2 in no-voltage or near no-voltage, SOC numerical value is less than a predefined less numerical value SOC2 at this moment, and under this charge mode, pulsewidth is adjusted the modulation signal A in the corresponding diagram 3.
Said second kind of charge mode means constant-current constant-voltage charging pattern (CC/CV), and this moment, SOC numerical value was greater than a predefined less numerical value SOC2, simultaneously less than a predefined bigger numerical value SOC1.Under this charge mode, the modulation signal B in the pulsewidth adjustment corresponding diagram 3.
Said the third charge mode means the charging modes of ultracapacitor 2 under the state of expiring electric or approaching full electricity, and SOC numerical value is greater than a predefined bigger numerical value SOC1 at this moment, and under this charge mode, pulsewidth is adjusted the modulation signal C in the corresponding diagram 3.
What above-mentioned charging method adopted is a kind of continual charging modes, promptly is connected through a switch element Q1 maintenance all the time between energy source 1 and the charge circuit.When the SOC that detects super charger 2 when control unit 3 satisfies the charge condition of a certain pattern, just start corresponding charge mode it is charged.
In the above-mentioned charging method, a complete charging process need be used above-mentioned three kinds of charge modes successively.The initial charge stage is taked first kind of charge mode; During near fully charged state, take the third charge mode; Middle charging process adopts second kind of charge mode of CC/CV; And the charging current of starting stage is less than the size of current in constant current charge stage.
Can find out that from the above mentioned the third charge mode is to charge to full electricity or near the ultracapacitor under the state of full electricity.This charge mode is actually and adopts the trickle charge pattern, mainly is in order to remedy the voltage reduction that ultracapacitor 2 brings owing to self discharge when idle.The size of this charge mode charging current is to adopt following method to be provided with:
Energy source 1 in the utility model can adopt various equipment or the devices that power supply is provided such as engine, alternating current, battery pack, solar energy-electric energy, wind energy or biological energy source, is whole charge circuit power supply through energy source 1.For example, when adopting engine and various regenerative resource form power supply unit, can be transformed to direct current through transducer 11 (for example transformation, rectification circuit) as energy source 1.Described energy source 1 can provide two output interfaces, and one of them interface is used to control unit 3 power supplies through pressurizer 8, and another interface is supplied with for ultracapacitor 2 provides energy through converter 31 according to the instruction of control unit 3.
In addition, in the charge circuit of the utility model, be provided with LED 9, it can be used for charged state is carried out visual cues.In control unit 3, can be integrated with clock 34, corresponding time parameter to be provided to control unit 3.
See shown in Figure 2ly, this is the circuit diagram of a preferred embodiment of the utility model charging device, and in the present embodiment, described energy source 1 is an AC power 10, and AC power 10 is through transformer 5 and rectifier 6 back access charge circuit.Said control unit 3 adopts the microprocessor 30 that is built-in with Logic control module 32 and pulse width modulation module 33.
Said ultracapacitor 2 can adopt a ultracapacitor monomer, also can comprise more than one ultracapacitor, such as the ultracapacitor module of going here and there mutually to each other and being connected to form.
It is the MG9000 Series chip that described microprocessor 30 can adopt model.
In the present embodiment; Described sampling module 4 comprises: power supply sample resistance and ultracapacitor sample resistance; Wherein the power supply sample resistance is made up of two parallel resistor R1, R2; Power supply sample resistance one end is connected with AC power 10 outputs, and its other end inserts an input pin P3 of microprocessor 30; Described ultracapacitor sample resistance has two parallel resistor R3, R4 to constitute, and this ultracapacitor sample resistance one end is connected with ultracapacitor 2, and the other end inserts an input pin P2 of microprocessor 30.
Be provided with a switch element Q1 in the said charge circuit, Q1 is switched on or switched off charge circuit through this switch element, instructs with the pulsewidth adjustment that pulse width modulation module in the response microprocessor 30 is sent; This switch element Q1 is connected with an input pin P2 of microprocessor 30.Switch element Q1 is connected with a protection diode T1.
Described ultracapacitor 2 is parallelly connected with an inductance L, under switch element Q1 off-state, is ultracapacitor 2 chargings by the electric energy that is stored on the inductance L.Described ultracapacitor 2 is connected with the diode T2 of a restriction ultracapacitor 2 discharges.
During operation; Voltage signal and temperature signal that microprocessor 30 at first transmits according to its P1 interface; Calculate the SOC numerical value of ultracapacitor 2; And the SOC1 and the SOC2 of its microprocessor 30 internal preset compared, and then definite charge mode and relevant pulse width modulation signals sent to the driver of switch element Q1.Carry out closure or off action by driver drives switch element Q1 at last.Charge with the third charge mode up to what ultracapacitor 2 completely filled or continued.
Under any charge mode, when switch element Q1 connected, the charge circuit conducting just had electric current and flows through ultracapacitor 2, and it is charged.When switch element Q1 broke off, the energy that is stored in the inductance L passed through the loop that " inductance L-ultracapacitor 2 – diode T2 " constitute, and continued as ultracapacitor 2 chargings.
Fig. 3 is the oscillogram of pulse-width modulation situation in the one whole charging process, and it has provided the impulse waveform of the corresponding down modulation signal A of three kinds of charge modes, B, C.
Fig. 4 is the oscillogram with the corresponding ultracapacitor 2 of Fig. 3 charging current and change in voltage in charging process.The pulsewidth oscillogram that modulation signal A is corresponding among Fig. 3 when being the initial constant current charge of ultracapacitor 2, charging current change curve A1 in its corresponding diagram 4.The pulsewidth oscillogram that modulation signal B is corresponding among Fig. 3 when being ultracapacitor 2 constant voltage charges, charging current change curve B1 in its corresponding diagram 4; The pulsewidth oscillogram that modulation signal C is corresponding among Fig. 3 when being ultracapacitor 2 trickle compensating charges, charging current change curve C1 in its corresponding diagram 4.Curve D 1 is the change in voltage curve of ultracapacitor 2 in charging process among Fig. 4.
Switch element Q1 in the utility model can be arbitrary suitable electronic switch, like electro-mechanical switches, and bipolar junction transistor, FET, igbt or other transistor.
Certainly; The above is merely the specific embodiment of the utility model; Be not to limit the utility model practical range, all equivalences of doing according to the said structure of the utility model claim, characteristic and principle change or modify, and all should be included in the utility model claim.
Claims (8)
1. charging device that is used for ultracapacitor; It is characterized in that: this charging device comprises: ultracapacitor, energy source, control unit, the sampling module of electric energy are provided for ultracapacitor; Described ultracapacitor, energy source, control unit, sampling module constitute a charge circuit; Wherein energy source charges to ultracapacitor through control unit; Include Logic control module and pulse width modulation module in this control unit; Sampling module feeds back to control unit after voltage, the Temperature numerical of ultracapacitor are gathered, and after calculating, analyze through the Logic control module in the control unit, is that ultracapacitor charge to the width adjusting of charging pulse to specifying size by the pulse width modulation module.
2. a kind of charging device that is used for ultracapacitor according to claim 1 is characterized in that: described energy source is an AC power, and this AC power inserts charge circuit behind transformer and rectifier.
3. a kind of charging device that is used for ultracapacitor according to claim 2 is characterized in that: said control unit adopts the microprocessor that is built-in with Logic control module and pulse width modulation module.
4. a kind of charging device that is used for ultracapacitor according to claim 3; It is characterized in that: described sampling module comprises: power supply sample resistance and ultracapacitor sample resistance; Wherein the power supply sample resistance is made up of two parallel resistor; Power supply sample resistance one end is connected with ac power output, and its other end inserts the input pin of a correspondence of microprocessor; Described ultracapacitor sample resistance has two parallel resistor to constitute, and this ultracapacitor sample resistance one end is connected with ultracapacitor, and the other end inserts the input pin of a correspondence of microprocessor.
5. a kind of charging device that is used for ultracapacitor according to claim 4; It is characterized in that: also be provided with a switch element in the said charge circuit; Be switched on or switched off charge circuit through this switch element, instruct with the pulsewidth adjustment that pulse width modulation module in the response microprocessor is sent; Corresponding input pin of this switch element and microprocessor connects.
6. a kind of charging device that is used for ultracapacitor according to claim 5 is characterized in that: described ultracapacitor is parallelly connected with an inductance, under the switch element off-state, is the ultracapacitor charging by the electric energy that is stored on the inductance.
7. a kind of charging device that is used for ultracapacitor according to claim 6 is characterized in that: said switch element is connected with a protection diode; Described ultracapacitor is connected with another diode.
8. according to any described a kind of charging device that is used for ultracapacitor among the claim 1-7, it is characterized in that: said ultracapacitor is the ultracapacitor monomer, or the ultracapacitor module that is made up of ultracapacitor monomer series/parallel.
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| CN 201220224293 CN202586442U (en) | 2012-05-17 | 2012-05-17 | Charging device for super-capacitor |
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| CN 201220224293 CN202586442U (en) | 2012-05-17 | 2012-05-17 | Charging device for super-capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684267A (en) * | 2012-05-17 | 2012-09-19 | 无锡富洪科技有限公司 | Charging method and charging device for supercapacitor |
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2012
- 2012-05-17 CN CN 201220224293 patent/CN202586442U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684267A (en) * | 2012-05-17 | 2012-09-19 | 无锡富洪科技有限公司 | Charging method and charging device for supercapacitor |
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Effective date of registration: 20160612 Address after: 523860 Guangdong province Dongguan city Changan town Xingfa Road Industrial Park Star usha B building, first floor Patentee after: FUHUADE ELECTRONICS (DONGGUAN) CO., LTD. Address before: 214028 Jiangsu Province, Wuxi City District River Street Square before Chunyang Road No. 28 Patentee before: Wuxi Fuhong Technology Co., Ltd. |
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Granted publication date: 20121205 |
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