CN103354383A - Super capacitor charging device - Google Patents
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- CN103354383A CN103354383A CN2013101531592A CN201310153159A CN103354383A CN 103354383 A CN103354383 A CN 103354383A CN 2013101531592 A CN2013101531592 A CN 2013101531592A CN 201310153159 A CN201310153159 A CN 201310153159A CN 103354383 A CN103354383 A CN 103354383A
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Abstract
The invention relates to a super capacitor charging device. The super capacitor charging device comprises an input control switch unit, an EMI processing unit, a signal collection unit, a driving unit, a control and protection unit, a single-phase input rectification unit, a current feed topology unit and an output switch control unit which are electrically connected. The device charges a super capacitor by adopting a current feed topology structure and voltage mode control and feed-forward compensation control technologies, and can realize a mode of two-section charging for the super capacitor, thereby realizing wide input, high efficiency, low cost, reliable performance and strong applicability of the charging device, and greatly promoting the process of industrialization of the super capacitor. The device provided by the invention is applied to charging of super capacitor banks with wide AC voltage input.
Description
Technical field
The present invention is a kind of device for the super capacitor charging, utilizes this device that the super capacitor group is charged, and can realize super capacitor two-part charge mode.This device is applicable to the device of charging of the super capacitor group of wide alternating voltage input.
Background technology
The power supply of pure electric automobile is battery, be subjected to the impact of battery self character, a little less than the battery withstand shock ability, and ultracapacitor is as a kind of double electric layer capacitor, because special raw material and manufacture method makes it have higher power density and efficient, have the double grading of battery and electric capacity concurrently, become the splendid electrical source of power of a kind of performance.Ultracapacitor has satisfied market to high-frequency, large intensity, high cycle-index and has met the demand of the electrical source of power of environmental protection policy, in fields such as electric automobile, electronic apparatus, energy storage equipment, solar energy fabulous development prospect is arranged.Domestic production unit towards being applied to merely the super capacitor charging device does not almost have at present, can't satisfy dynamical system to the quick demand of electric capacity power, and the charging device of development super capacitor is significant.
Therefore; in the research process of being devoted to the pure electric vehicle power supply; applied for the patent about direct-current converter for pure electric vehicle; wherein in No. 201120157092.6 direct-current converter for pure electric vehicle patent, disclose the pure electric vehicle DC converter based on the power cell parallel connection of wide input, mainly formed by the input control relay that is electrically connected, power unit in parallel, EMI processing unit, output control relay and control and protection unit.Power cell parallel connection and the pulse control chip of this converter so that the converter volume is little, and can be increased work efficiency; Can according to the fluctuation situation of input voltage and the variation characteristic of load, realize that automatically the voltage stabilizing of output voltage and circulation suppress; System can close with the fastest speed the pulse of power device when short trouble occurring.Yet this DC converter existence starts frequently, closes, and greatly reduces the reliability of DC converter; Simultaneously soft start function uses limitation, and the output switch control module is the problem such as aging easily, needs to be optimized mode of operation and defencive function, improves dependable with function.
So by disclosed pure electric automobile dc converter in No. 201220153122.0 patent after optimizing, it comprises input switch control module, power unit in parallel, EMI processing module, the control and protection module of electric connection and signal acquisition module, pattern modular converter and the driver module that is electrically connected with above-mentioned module.This modified model pure electric automobile dc converter has been optimized mode of operation, input switch control module and the defencive function of DC converter, and reliability and the applicability of device are increased.
Although done above-mentioned optimization, in view of the production of super capacitor charging device forms ripe technology at home always, thereby wait further to optimize from the details part, to promote the commercial application of super capacitor.
The present invention namely is that research is in the situation that the input of variable single phase alternating current (A.C.) voltage, charging device based on the super capacitor group of the control of voltage feed topological structure, voltage mode and Front feedback control has obviously important meaning to the commercial application that promotes super capacitor.
Summary of the invention
The object of the invention is to for super capacitor charging or detect and the charging device of a kind of super capacitor group based on current feed topological structure, voltage mode control and Front feedback control of design.Can be applicable to the charging of different capacitance group by this device, can satisfy multiple super capacitor group charging requirement through simple parameter matching, and guarantee that this device has high efficiency and high reliability.
The present invention is achieved by the following scheme:
Above-mentioned super capacitor charging device comprises input control switch element, EMI processing unit, signal gathering unit, driver element and the control and protection unit of electric connection; It is characterized in that: described super capacitor charging device also comprises single-phase input rectifying unit, current feed topology unit and the output switch control unit that is electrically connected with said units; Described single-phase input rectifying unit becomes single-phase alternating current into the less direct current of pulsation; Described current feed topology unit realizes the high-voltage dc voltage isolated variable is become low-voltage dc voltage, and realization obtains low-voltage dc voltage by recommending after full-bridge inverting, high-frequency isolation and rectifying and wave-filtering are processed after converting the high voltage direct current potential source to current source.
The output switch control unit carries out self check to system, and switch closure after state-detection is normal is controlled output switching element according to the Protection mode state during fault.
Described super capacitor charging device, wherein: the direct voltage that the single phase alternating current (A.C.) voltage input of described single-phase input rectifying unit obtains pulsing through the uncontrollable rectification circuit of single-phase full bridge.
Described super capacitor charging device, wherein: generation, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the electric capacity condition monitoring function of pwm pulse mainly realized in described control and protection unit.Described control and protection unit adopts closed-loop control, increases Front feedback control in current loop control.Described closed-loop control is in the situation that the dc bus side is used smaller capacitive, and input ac voltage is sampled, and with the input as multiplier of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier is as the reference value of electric current loop.
Described super capacitor charging device, wherein: described super capacitor charging device also comprises input switch driver element and output switch driver element; The control signal that described input switch driver element sends described control and protection module is isolated amplification and is controlled described input switch control unit; The control signal that described output switch driver element sends described control and protection unit is isolated amplification and is controlled described output switch control unit.
Described super capacitor charging device, wherein: described input control switch element carries out system and carries out self check, and switch closure after state-detection is normal is controlled this switch element according to the Protection mode state during fault.
Described super capacitor charging device, wherein: described EMI processing unit suppresses the conducted interference of Circuit Fault on Secondary Transformer.
Described super capacitor charging device, wherein: described signal gathering unit gathers electric capacity state information, output voltage and output current, and the signal that collects is outputed to the control and protection unit.
Described super capacitor charging device; wherein: described driver element is with four road power amplification of PWM waveform and voltage amplifications of control and protection unit output; the turn on and off signal of the pulse of separate strong interference immunity as MOSFET is provided simultaneously, and driver module detects the function of MOSFET short trouble simultaneously in addition.
Beneficial effect:
Device for the super capacitor charging of the present invention, employing is based on current feed topological structure, voltage mode control and Front feedback control technology, utilize this device that the super capacitor group is charged, can realize super capacitor two-part charge mode, realize the wide input of this charging device, high efficiency, low cost, dependable performance, applicability is strong, has greatly promoted the industrialization process of super capacitor; This device is applicable to the device of charging of the super capacitor group of wide alternating voltage input.Have following features:
1. single phase alternating current (A.C.) voltage is inputted the direct voltage that obtains pulsing through the uncontrollable rectification circuit of single-phase full bridge, adopt the current feed topological structure, convert the rectification output dc voltage to direct current, realization obtains low-voltage dc voltage by recommending after full-bridge inverting, high-frequency isolation and rectifying and wave-filtering are processed after converting the high voltage direct current potential source to current source.
Consist of a current feed topological structure, the bias phenomenon of having avoided isolating transformer to occur fully; Simultaneously do not need the rectification output inductor, greatly reduced vehicle power volume and cost, avoided the problem of charging device output inductor heating yet; Between input power and topology, have larger inductance, avoided the problem of instantaneous short circuit;
2. for satisfying the requirement of voltage ripple, in the situation that the dc bus side is used smaller capacitive, in current loop control, introduce Front feedback control, input ac voltage is sampled, with the input as multiplier of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier is as the reference value of electric current loop, power output at this device does not change with the fluctuation of input voltage like this, both reduced output voltage ripple, and improved again system and had speed than high dynamic response;
3. after entering operational mode, just enter constant current mode if detect the output battery undervoltage, after being raised to more than the 13V, voltage enters constant voltage mode, detect simultaneously load condition and input battery status, being divided into three kinds of situations when breaking down processes: close immediately pulse and disconnect simultaneously main circuit power supply in non-short circuit and load rejection situation, if wait for that the fault eliminating is then restarted after 2 seconds, enter start-up mode this moment, start-up mode enters normal mode of operation after finishing; If there is short-circuit conditions, system enters the constant current mode of operation at once; If there is unexpected no-load condition, system enters the constant voltage mode of operation; The simultaneous faults lamp shows.
Description of drawings
Fig. 1 is the system construction drawing of super capacitor charging device of the present invention;
Fig. 2 is the main circuit schematic diagram of super capacitor charging device of the present invention;
Fig. 3 is the loop control theory figure of super capacitor charging device of the present invention.
Embodiment
The present invention is in for super capacitor charging or detect and the charging device of a kind of super capacitor group based on current feed topological structure, voltage mode control and Front feedback control of design.As shown in Figure 1 and Figure 2, this super capacitor charging device mainly is comprised of the single-phase input rectifying unit 1, input control switch element 2, input switch driver element 3, current feed topology unit 4, EMI processing unit 5, signal gathering unit 6, driver element 7, output switch control unit 8, output switch driver element 9 and the control and protection unit 10 that are electrically connected.
Single-phase input rectifying unit 1 becomes single-phase alternating current into the less direct current of pulsation; The direct voltage that the input of single phase alternating current (A.C.) voltage obtains pulsing through the uncontrollable rectification circuit of single-phase full bridge;
Input control switch element 2 is by carrying out self check to system, and switch closure after state-detection is normal is controlled input switch unit according to the Protection mode state during fault;
The control signal that input switch driver element 3 sends the control and protection module is isolated amplification and is come the control inputs switch control module;
Current feed topology unit 4 realizes the high-voltage dc voltage isolated variable is become low-voltage dc voltage; Realization obtains low-voltage dc voltage by recommending after full-bridge inverting, high-frequency isolation and rectifying and wave-filtering are processed after converting the high voltage direct current potential source to current source;
EMI processing unit 5 suppresses the conducted interference of Circuit Fault on Secondary Transformer;
Signal gathering unit 6 gathers electric capacity state information, output voltage and output current, and the signal that collects is outputed to control and protection unit 10.
Driver element 7 is with four road power amplification of PWM waveform and voltage amplifications of control and protection unit 10 outputs; the turn on and off signal of the pulse of separate strong interference immunity as MOSFET is provided simultaneously, and this driver element 7 detects the function of MOSFET short trouble simultaneously in addition.
Output switch control unit 8 control logics are identical with input control switch element switching logic, and by system is carried out self check, switch closure after state-detection is normal is controlled output switching element according to the Protection mode state during fault;
The control signal that output switch driver element 9 sends the control and protection unit is isolated amplification and is controlled the output switch control unit;
Control and protection unit 10 main generation, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the electric capacity condition monitoring functions that realize pwm pulse, adopt closed-loop control, control principle as shown in Figure 3, in current loop control, increase Front feedback control, simultaneously inductive current and input ac power are sampled, as the input of multiplier P1, again through power amplifier PWM output; Therefore, in the situation that the dc bus side is used smaller capacitive, owing in current loop control, introducing Front feedback control, input ac voltage is sampled, with the input as multiplier P1 of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier P1 does not change the power output of this device as the reference value of electric current loop with the fluctuation of input voltage.
The course of work:
After the energising of single phase alternating current (A.C.) input voltage, auxiliary power start, control and protection unit 10 enters self-diagnosable system, by signal gathering unit 6 detect supply power voltages whether normal, detect charging device output super capacitor and whether connect etc., if normal, the switch closure of input control switch element 2 if there is one to break down then system does not start, and is given the demonstration information that is out of order with the light form;
After self-diagnosable system was confirmed normally, the switch of input control switch element 2 closed, and enters normal mode of operation; The single phase alternating current (A.C.) input voltage is transformed into direct current by single-phase input rectifying filter unit 1, current feed topology unit 4, EMI processing unit 5, output switch control unit 8 with single-phase alternating current and charges to super capacitor; In the charging process, control and protection unit 10 detects the status signals such as output voltage output current, control charging flow in real time;
In charging process, the situations such as control and protection unit 10 detects by signal gathering unit 6 and whether occurs that input voltage is under-voltage, input voltage overvoltage, output overvoltage, output overcurrent, charging device are overheated, output short-circuit, output open circuit are in case occur then enter the Protection pattern; In the Protection pattern, control and protection unit 10 enters error protection work for the treatment of flow process, and through after the time-delay of certain hour, if fault is got rid of, system recovers to enter normal mode of operation automatically.
The present invention has following features:
1. based on the current feed topological structure
The direct voltage that the input of single phase alternating current (A.C.) voltage obtains pulsing through the uncontrollable rectification circuit of single-phase full bridge, adopt the current feed topological structure, convert the rectification output dc voltage to direct current, realization obtains low-voltage dc voltage by recommending after full-bridge inverting, high-frequency isolation and rectifying and wave-filtering are processed after converting the high voltage direct current potential source to current source, consist of a current feed topological structure, the bias phenomenon of having avoided isolating transformer to occur fully; Simultaneously do not need the rectification output inductor, greatly reduced vehicle power volume and cost, avoided the problem of charging device output inductor heating yet; Between input power and topology, have larger inductance, avoided the problem of instantaneous short circuit;
2. Front feedback control technology
Because input ac voltage is in fluctuation, when load rises to full load from underloading, because the impact of inductance, the voltage on the output capacitance fails to rise to rapidly needed voltage, so just causes the fluctuation of rear class converter output voltage; For satisfying the requirement of voltage ripple, in the situation that the dc bus side is used smaller capacitive, in current loop control, introduce Front feedback control, input ac voltage is sampled, with the input as multiplier of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier is as the reference value of electric current loop, power output at this device does not change with the fluctuation of input voltage like this, both reduced output voltage ripple, and improved again system and had speed than high dynamic response;
3. defencive function logic optimization
To have carried out further optimization in the technical foundation of No. 201120157092.6 direct-current converter for pure electric vehicle and No. 201220153122.0 pure electric automobile dc converter patent, after entering operational mode, just enter constant current mode if detect the output battery undervoltage, after being raised to more than the 13V, voltage enters constant voltage mode, detect simultaneously load condition and input battery status, being divided into three kinds of situations when breaking down processes: close immediately pulse and disconnect simultaneously main circuit power supply in non-short circuit and load rejection situation, if wait for that the fault eliminating is then restarted after 2 seconds, enter start-up mode this moment, start-up mode enters normal mode of operation after finishing; If there is short-circuit conditions, system enters the constant current mode of operation at once; If there is unexpected no-load condition, system enters the constant voltage mode of operation; The simultaneous faults lamp shows.
It is of the present invention in the situation that variable single phase alternating current (A.C.) voltage input based on the research and development success of the super capacitor group charging device of voltage feed topological structure, voltage mode control and Front feedback control, has obviously important meaning to the commercial application that promotes super capacitor.
Claims (10)
1. super capacitor charging device comprises input control switch element, EMI processing unit, signal gathering unit, driver element and the control and protection unit of electric connection; It is characterized in that: described super capacitor charging device also comprises single-phase input rectifying unit, current feed topology unit and the output switch control unit that is electrically connected with said units;
Described single-phase input rectifying unit becomes single-phase alternating current into the less direct current of pulsation;
Described current feed topology unit realizes the high-voltage dc voltage isolated variable is become low-voltage dc voltage, and realization obtains low-voltage dc voltage by recommending after full-bridge inverting, high-frequency isolation and rectifying and wave-filtering are processed after converting the high voltage direct current potential source to current source;
The output switch control unit carries out self check to system, and switch closure after state-detection is normal is controlled output switching element according to the Protection mode state during fault.
2. super capacitor charging device as claimed in claim 1 is characterized in that: the direct voltage that the single phase alternating current (A.C.) voltage input of described single-phase input rectifying unit obtains pulsing through the uncontrollable rectification circuit of single-phase full bridge.
3. super capacitor charging device as claimed in claim 1 or 2 is characterized in that: generation, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the electric capacity condition monitoring function of pwm pulse mainly realized in described control and protection unit.
4. super capacitor charging device as claimed in claim 3 is characterized in that: described control and protection unit adopts closed-loop control, increases Front feedback control in current loop control.
5. super capacitor charging device as claimed in claim 4, it is characterized in that: described closed-loop control is in the situation that the dc bus side is used smaller capacitive, input ac voltage is sampled, with the input as multiplier of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier is as the reference value of electric current loop.
6. super capacitor charging device as claimed in claim 1 or 2, it is characterized in that: described super capacitor charging device also comprises input switch driver element and output switch driver element;
The control signal that described input switch driver element sends described control and protection module is isolated amplification and is controlled described input switch control unit;
The control signal that described output switch driver element sends described control and protection unit is isolated amplification and is controlled described output switch control unit.
7. super capacitor charging device as claimed in claim 1 or 2, it is characterized in that: described input control switch element carries out system and carries out self check, and switch closure after state-detection is normal is controlled this switch element according to the Protection mode state during fault.
8. super capacitor charging device as claimed in claim 1 or 2 is characterized in that: the conducted interference of described EMI processing unit inhibition Circuit Fault on Secondary Transformer.
9. super capacitor charging device as claimed in claim 1 or 2 is characterized in that: described signal gathering unit gathers electric capacity state information, output voltage and output current, and the signal that collects is outputed to the control and protection unit.
10. super capacitor charging device as claimed in claim 1 or 2; it is characterized in that: described driver element is with four road power amplification of PWM waveform and voltage amplifications of control and protection unit output; the turn on and off signal of the pulse of separate strong interference immunity as MOSFET is provided simultaneously, and driver module detects the function of MOSFET short trouble simultaneously in addition.
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| CN201310153159.2A CN103354383B (en) | 2013-04-28 | 2013-04-28 | Super capacitor charging device |
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| CN201310153159.2A CN103354383B (en) | 2013-04-28 | 2013-04-28 | Super capacitor charging device |
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| CN103354383B CN103354383B (en) | 2015-07-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104362689A (en) * | 2014-10-29 | 2015-02-18 | 中国石油化工股份有限公司 | Direct-current emergency power supply device with supercapacitor module |
| CN104749454A (en) * | 2013-12-30 | 2015-07-01 | 上海普锐马电子有限公司 | Program-controlled monitoring circuit for high voltage capacitor |
| CN106335377A (en) * | 2016-08-30 | 2017-01-18 | 合肥博雷电气有限公司 | Vehicle-mounted composite power supply device based on supercapacitor |
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Effective date of registration: 20160620 Address after: 100055, room two, room 1, building 201, Beijing office, South Plaza, Fengtai District west station, Beijing Patentee after: SHANGTANG INVESTMENT CO., LTD. Address before: Shiyan City, Hubei province 442002 City Road No. 167 Patentee before: Hubei University of Automobile Technology |
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