CN103354383B - Super capacitor charging device - Google Patents
Super capacitor charging device Download PDFInfo
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- CN103354383B CN103354383B CN201310153159.2A CN201310153159A CN103354383B CN 103354383 B CN103354383 B CN 103354383B CN 201310153159 A CN201310153159 A CN 201310153159A CN 103354383 B CN103354383 B CN 103354383B
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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 super capacitor charging, utilizes this device to charge to super capacitor group, can realize super capacitor two-part charge mode.This device is applicable to the device of the charging of the super capacitor group of wide alternating voltage input.
Background technology
The power supply of pure electric automobile is battery, by the impact of battery self character, battery withstand shock ability is weak, and ultracapacitor is as a kind of double electric layer capacitor, because special raw material and manufacture method make it have higher power density and efficiency, have the double grading of battery and electric capacity concurrently, become the electrical source of power that a kind of performance is splendid.Ultracapacitor meets market to high-frequency, large intensity, high cycle-index meet the demand of the electrical source of power of environmental protection policy, has fabulous development prospect in fields such as electric automobile, electronic apparatus, energy storage equipment, solar energy.The domestic production unit towards being applied to merely discharge does not almost have at present, cannot meet the quick demand of dynamical system to electric capacity power, and the charging device of development super capacitor is significant.
Therefore; in the research process being devoted to pure electric vehicle power supply; apply for the patent about direct-current converter for pure electric vehicle; in the direct-current converter for pure electric vehicle patent of No. 201120157092.6, wherein disclose the pure electric vehicle DC converter based on power cell parallel connection of wide input, primarily of the input control relay be electrically connected, power parallel unit, EMI processing unit, output control relay and control and protection unit composition.The power cell parallel connection of this converter and Pulse Width Control chip, make converter volume little, and can increase work efficiency; According to the variation characteristic of the fluctuation situation of input voltage and load, can automatically realize voltage stabilizing and the loop current suppression of output voltage; During appearance short trouble, system can close the pulse of power device with the fastest speed.But the existence of this DC converter starts frequently, closes, and greatly reduces the reliability of DC converter; Simultaneously soft start function uses limitation, and 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 pure electric automobile DC converter disclosed in No. 201220153122.0 patent after optimizing, it signal acquisition module, mode conversion module and driver module of comprising the input switch control module of electric connection, power parallel unit, EMI processing module, control and protection module and being electrically connected with above-mentioned module.This modified model pure electric automobile DC converter, optimizes the mode of operation of DC converter, input switch control module and defencive function, and reliability and the applicability of device are increased.
Although done above-mentioned optimization, the production in view of discharge has not formed ripe technology at home always, thus waits further to optimize from details part, to promote the commercial application of super capacitor.
Namely the present invention is that research is when variable single-phase AC voltage inputs, control based on voltage feed topological structure, voltage mode and the charging device of super capacitor group of Front feedback control, to promoting that the commercial application of super capacitor has obviously important meaning.
Summary of the invention
The object of the invention is to for super capacitor charging or to detect and design a kind of controls based on current fed topologies structure, voltage mode and the charging device of super capacitor group of Front feedback control.The charging of different capacitance group can be applicable to by this device, multiple super capacitor group charging requirement can be met 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 discharge, comprises the input control switch element of electric connection, EMI processing unit, signal gathering unit, driver element and control and protection unit; It is characterized in that: described discharge also comprises the single-phase input rectifying unit, current fed topologies unit and the output switch control unit that are electrically connected with said units; Single-phase alternating current is become the less direct current of pulsation by described single-phase input rectifying unit; Described current fed topologies unit realizes high-voltage dc voltage isolated variable to become low-voltage dc voltage, obtains low-voltage dc voltage after realizing converting high voltage direct current potential source to current source after recommending full-bridge inverting, high-frequency isolation and rectifying and wave-filtering process.
Output switch control unit carries out self-inspection to system, and after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to output switching element.
Described discharge, wherein: the single-phase AC voltage input of described single-phase input rectifying unit obtains the direct voltage of pulsing through the uncontrollable rectification circuit of single-phase full bridge.
Described discharge, wherein: described control and protection unit mainly realizes the generation of pwm pulse, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and capacitance state monitoring function.Described control and protection unit adopts closed-loop control, in current loop control, increase Front feedback control.Described closed-loop control is when DC bus side uses smaller capacitive, input ac voltage is sampled, Voltage loop is exported, alternating voltage sampled value and inductive current as the input of multiplier, the output of multiplier is as the reference value of electric current loop.
Described discharge, wherein: described discharge also comprises input switch driver element and output switch driver element; The control signal that described control and protection module sends is carried out isolation amplification to control described input switch control unit by described input switch driver element; The control signal that described control and protection unit sends is carried out isolation amplification to control described output switch control unit by described output switch driver element.
Described discharge, wherein: described input control switch element carries out system and carries out self-inspection, after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to this switch element.
Described discharge, wherein: described EMI processing unit suppresses the conducted interference of Circuit Fault on Secondary Transformer.
Described discharge, wherein: described signal gathering unit gathers capacitance state information, output voltage and output current, and the signal collected is outputted to control and protection unit.
Described discharge; wherein: the four road PWM waveform power that control and protection unit exports by described driver element amplify and voltage amplification; there is provided the pulse of separate strong interference immunity to turn on and off signal as MOSFET, driver module also has the function detecting MOSFET short trouble simultaneously simultaneously.
Beneficial effect:
Device for super capacitor charging of the present invention, adopt and control and Front feedback control technology based on current fed topologies structure, voltage mode, this device is utilized to charge to super capacitor group, 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, greatly facilitates the industrialization process of super capacitor; This device is applicable to the device of the charging of the super capacitor group of wide alternating voltage input.There is following features:
1. single-phase AC voltage input obtains the direct voltage of pulsation through the uncontrollable rectification circuit of single-phase full bridge, adopt current fed topologies structure, convert rectification output dc voltage to direct current, after realizing converting high voltage direct current potential source to current source, after recommending full-bridge inverting, high-frequency isolation and rectifying and wave-filtering process, obtain low-voltage dc voltage.
Form a current fed topologies structure, completely avoid the bias phenomenon that isolating transformer occurs; Do not need rectification output inductor simultaneously, substantially reduce vehicle power volume and cost, it also avoid the problem of charging device output inductor heating; There is larger inductance between input power and topology, avoid the problem of instantaneous short circuit;
2. for meeting the requirement of voltage ripple, when DC bus side uses smaller capacitive, Front feedback control is introduced in current loop control, input ac voltage is sampled, using 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, do not change with the fluctuation of input voltage in the power output of this device like this, both reduced output voltage ripple, the system of turn improving has the speed compared with high dynamic response;
3. after entering operational mode, if detect that exporting battery undervoltage just enters constant current mode, constant voltage mode is entered after voltage is raised to more than 13V, detect load condition and input battery status simultaneously, three kinds of situations are divided into process when breaking down: in non-shorting and load rejection situation, to close pulse immediately disconnect main circuit power supply simultaneously, if wait for failture evacuation after 2 seconds, restart, now enter start-up mode, after start-up mode terminates, enter normal mode of operation; If there is short-circuit conditions, system enters constant current mode at once; If there is unexpected no-load condition, system enters constant voltage mode of operation; Simultaneous faults lamp shows.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of discharge of the present invention;
Fig. 2 is the main circuit schematic diagram of discharge of the present invention;
Fig. 3 is the loop control theory figure of discharge of the present invention.
Embodiment
The present invention is in for super capacitor charging or to detect and design a kind of controls based on current fed topologies structure, voltage mode and the charging device of super capacitor group of Front feedback control.As shown in Figure 1 and Figure 2, this discharge forms primarily of the single-phase input rectifying unit 1 be electrically connected, input control switch element 2, input switch driver element 3, current fed topologies unit 4, EMI processing unit 5, signal gathering unit 6, driver element 7, output switch control unit 8, output switch driver element 9 and control and protection unit 10.
Single-phase alternating current is become the less direct current of pulsation by single-phase input rectifying unit 1; Single-phase AC voltage input obtains the direct voltage of pulsing through the uncontrollable rectification circuit of single-phase full bridge;
Input control switch element 2 is by carrying out self-inspection to system, and after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to input switch unit;
The control signal that control and protection module sends by input switch driver element 3 is carried out isolation amplification and is carried out control inputs switch control module;
Current fed topologies unit 4 realizes high-voltage dc voltage isolated variable to become low-voltage dc voltage; After recommending full-bridge inverting, high-frequency isolation and rectifying and wave-filtering process, low-voltage dc voltage is obtained after realizing converting 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 capacitance state information, output voltage and output current, and the signal collected is outputted to control and protection unit 10.
The four road PWM waveform power that control and protection unit 10 exports by driver element 7 amplify and voltage amplification; there is provided the pulse of separate strong interference immunity to turn on and off signal as MOSFET, this driver element 7 also has the function detecting MOSFET short trouble simultaneously simultaneously.
Output switch control unit 8 control logic is identical with input control switch element switching logic, and by carrying out self-inspection to system, after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to output switching element;
The control signal that control and protection unit sends by output switch driver element 9 carries out isolation amplification to control output switch control unit;
Control and protection unit 10 mainly realizes the generation of pwm pulse, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and capacitance state monitoring function, adopt closed-loop control, control principle as shown in Figure 3, Front feedback control is increased in current loop control, inductive current and input ac power are sampled simultaneously, as the input of multiplier P1, then export through power amplifier PWM; Therefore, when DC bus side uses smaller capacitive, owing to introducing Front feedback control in current loop control, input ac voltage is sampled, using the input as multiplier P1 of Voltage loop output, alternating voltage sampled value and inductive current, the output of multiplier P1, as the reference value of electric current loop, makes the power output of this device not change 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 voltage whether normal, detect charging device output super capacitor and whether connect, if normal, the switch of input control switch element 2 closes, if there is one to break down, system does not start, and provides malfunction coefficient information with light form;
Self-diagnosable system confirms normally, and the switch of input control switch element 2 closes, and enters normal mode of operation; Single-phase alternating current is transformed into direct current is charged to super capacitor by single-phase input rectifying filter unit 1, current fed topologies unit 4, EMI processing unit 5, output switch control unit 8 by single phase alternating current (A.C.) input voltage; In charging process, control and protection unit 10 detects the status signals such as output voltage output current in real time, controls charging flow;
In charging process, the situations such as control and protection unit 10 is detected 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, once occur, enter protection mode of operation; In protection mode of operation, control and protection unit 10 enters error protection work for the treatment of flow process, and after the time delay of certain hour, if failture evacuation, system is recovered to enter normal mode of operation automatically.
The present invention has following features:
1. based on current fed topologies structure
Single-phase AC voltage input obtains the direct voltage of pulsing through the uncontrollable rectification circuit of single-phase full bridge, adopt current fed topologies structure, convert rectification output dc voltage to direct current, after recommending full-bridge inverting, high-frequency isolation and rectifying and wave-filtering process, low-voltage dc voltage is obtained after realizing converting high voltage direct current potential source to current source, form a current fed topologies structure, completely avoid the bias phenomenon that isolating transformer occurs; Do not need rectification output inductor simultaneously, substantially reduce vehicle power volume and cost, it also avoid the problem of charging device output inductor heating; There is larger inductance between input power and topology, avoid 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, due to the impact of inductance, the voltage in output capacitance fails to rise to rapidly required voltage, so just causes the fluctuation of rear class converter output voltage; For meeting the requirement of voltage ripple, when DC bus side uses smaller capacitive, Front feedback control is introduced in current loop control, input ac voltage is sampled, using 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, do not change with the fluctuation of input voltage in the power output of this device like this, both reduced output voltage ripple, the system of turn improving has the speed compared with high dynamic response;
3. defencive function logic optimization
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, if detect that exporting battery undervoltage just enters constant current mode, constant voltage mode is entered after voltage is raised to more than 13V, detect load condition and input battery status simultaneously, three kinds of situations are divided into process when breaking down: in non-shorting and load rejection situation, to close pulse immediately disconnect main circuit power supply simultaneously, if wait for failture evacuation after 2 seconds, restart, now enter start-up mode, normal mode of operation is entered after start-up mode terminates, if there is short-circuit conditions, system enters constant current mode at once, if there is unexpected no-load condition, system enters constant voltage mode of operation, simultaneous faults lamp shows.
Of the present inventionly to control based on voltage feed topological structure, voltage mode when variable single-phase AC voltage inputs and the research and development success of super capacitor group charging device of Front feedback control, to promoting that the commercial application of super capacitor has obviously important meaning.
Claims (3)
1. a discharge, comprises the input control switch element of electric connection, EMI processing unit, signal gathering unit, driver element and control and protection unit; It is characterized in that: the output switch control unit that described discharge also comprises the single-phase input rectifying unit be electrically connected with above-mentioned input control switch element, the current fed topologies unit be electrically connected with input control switch element, EMI processing unit and driver element respectively and is electrically connected with EMI processing unit and control and protection unit respectively;
Single-phase alternating current is become the less direct current of pulsation by described single-phase input rectifying unit; The single-phase AC voltage input of described single-phase input rectifying unit obtains the direct voltage of pulsing through the uncontrollable rectification circuit of single-phase full bridge;
Described current fed topologies unit realizes high-voltage dc voltage isolated variable to become low-voltage dc voltage, obtains low-voltage dc voltage after realizing converting high voltage direct current potential source to current source after recommending full-bridge inverting, high-frequency isolation and rectifying and wave-filtering process;
Output switch control unit carries out self-inspection to system, and after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to output switching element;
Described discharge also comprises input switch driver element and output switch driver element; The control signal that described control and protection unit sends is carried out isolation amplification to control described input control switch element by described input switch driver element; Described input control switch element carries out system and carries out self-inspection, and after state-detection is normal, switch closes, and controls during fault according to protection operational mode state to this input control switch element; The control signal that described control and protection unit sends is carried out isolation amplification to control described output switch control unit by described output switch driver element;
Described control and protection unit mainly realizes the generation of pwm pulse, constant voltage, constant current, input overvoltage protection, input undervoltage protection, output overcurrent protection, short-circuit protection, overtemperature protection, charging process control and capacitance state monitoring function; Described control and protection unit adopts closed-loop control, in current loop control, increase Front feedback control; Described closed-loop control is when DC bus side uses smaller capacitive, input ac voltage is sampled, Voltage loop is exported, alternating voltage sampled value and inductive current as the input of multiplier, the output of multiplier is as the reference value of electric current loop; Described control and protection unit is after entering operational mode, if detect that exporting battery undervoltage just enters constant current mode, constant voltage mode is entered after voltage is raised to more than 13V, detect load condition and input battery status simultaneously, three kinds of situations are divided into process when breaking down: in non-shorting and load rejection situation, to close pulse immediately disconnect main circuit power supply simultaneously, if wait for failture evacuation after 2 seconds, restart, now enter start-up mode, after start-up mode terminates, enter normal mode of operation; If there is short-circuit conditions, system enters constant current mode at once; If there is unexpected no-load condition, system enters constant voltage mode of operation, and simultaneous faults lamp shows;
The four road PWM waveform power that control and protection unit exports by described driver element amplify and voltage amplification; there is provided the pulse of separate strong interference immunity to turn on and off signal as MOSFET, described driver element also has the function detecting MOSFET short trouble simultaneously simultaneously.
2. discharge as claimed in claim 1, is characterized in that: described EMI processing unit suppresses the conducted interference of Circuit Fault on Secondary Transformer.
3. discharge as claimed in claim 1, is characterized in that: described signal gathering unit gathers capacitance state information, output voltage and output current, and the signal collected is outputted to control and protection unit.
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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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| CN103354383A CN103354383A (en) | 2013-10-16 |
| CN103354383B true CN103354383B (en) | 2015-07-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN106335377B (en) * | 2016-08-30 | 2019-02-01 | 合肥博雷电气有限公司 | A kind of vehicle-mounted composite power supply unit based on super capacitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017800A (en) * | 1989-09-29 | 1991-05-21 | Wisconsin Alumni Research Foundation | AC to DC to AC power conversion apparatus with few active switches and input and output control |
| CN202050363U (en) * | 2011-05-17 | 2011-11-23 | 湖北汽车工业学院 | Direct-current converter for pure electric vehicle |
| CN202586744U (en) * | 2012-05-28 | 2012-12-05 | 十堰进步工贸有限公司 | Vehicle direct current converter |
| CN202616993U (en) * | 2012-04-12 | 2012-12-19 | 湖北汽车工业学院 | DC converting device for pure electric vehicle |
| CN203301209U (en) * | 2013-04-28 | 2013-11-20 | 湖北汽车工业学院 | Charging device for super capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088019A (en) * | 1990-09-18 | 1992-02-11 | Hewlett-Packard Company | Low harmonic current and fault tolerant power supply |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017800A (en) * | 1989-09-29 | 1991-05-21 | Wisconsin Alumni Research Foundation | AC to DC to AC power conversion apparatus with few active switches and input and output control |
| CN202050363U (en) * | 2011-05-17 | 2011-11-23 | 湖北汽车工业学院 | Direct-current converter for pure electric vehicle |
| CN202616993U (en) * | 2012-04-12 | 2012-12-19 | 湖北汽车工业学院 | DC converting device for pure electric vehicle |
| CN202586744U (en) * | 2012-05-28 | 2012-12-05 | 十堰进步工贸有限公司 | Vehicle direct current converter |
| CN203301209U (en) * | 2013-04-28 | 2013-11-20 | 湖北汽车工业学院 | Charging device for super capacitor |
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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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