CN201466775U - Storage battery charging and discharging device - Google Patents

Storage battery charging and discharging device Download PDF

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Publication number
CN201466775U
CN201466775U CN2009200855752U CN200920085575U CN201466775U CN 201466775 U CN201466775 U CN 201466775U CN 2009200855752 U CN2009200855752 U CN 2009200855752U CN 200920085575 U CN200920085575 U CN 200920085575U CN 201466775 U CN201466775 U CN 201466775U
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CN
China
Prior art keywords
voltage
unit
discharge
discharging
current
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CN2009200855752U
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Chinese (zh)
Inventor
王国安
李明勇
匡鹏
朱录涛
刘士杰
陈畅
Original Assignee
湖北国泰华瑞电子科技有限公司
襄樊德普电气有限公司
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Priority to CN2009100619843A priority Critical patent/CN101882806B/en
Priority to CN2009200855752U priority patent/CN201466775U/en
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Publication of CN201466775U publication Critical patent/CN201466775U/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model relates to a storage battery charging and discharging device which is used for production and testing of charge and discharge of storage batteries. The storage battery charging and discharging device comprises a storage battery charging and discharging component and a total digital control device. The main circuit comprises a non-control rectifying unit, a DC filter unit and a DC-DC bidirectional chopping unit which are connected in series, wherein the non-control rectifying unit comprises diode rectifier bridges; the DC filter unit comprises a DC filter capacitor and a high-frequency absorption capacitor which are connected in parallel; and the bidirectional chopping unit comprises a power switching element and a DC output inductor. The total digital control device generates pulse-width signaling control signal by using a high performance digital signal microprocessor as the core and dynamically controls the DC output voltage and current. The utility model overcomes the defects of the charging and discharging device in the aspects of power factor and energy utilization, can utilize the electrical energy with high efficiency and realize the functions of modularized combination, bidirectional flow of charging and discharging energy and safe shutdown at the time of power-fail, and has the advantages of strong universality, high line-side power factor, wide range of output voltage, high dynamic accuracy of current output and high response speed.

Description

Battery charge and discharge device
Technical field
The utility model relates to a kind of accumulator cell charging and discharging power supply in the Technics of Power Electronic Conversion technical field, refer in particular to a kind ofly not control the structure that the copped wave of rectification unit and DC-to-DC-the boost bi-directional converter unit is in series, its output voltage and electric current adopt dynamic control, power supply and load to have the battery charge and discharge device of energy two-way flow.
Background technology
Storage battery has obtained extensive use as a kind of chemical power source of dependable performance at industrial circles such as electric power system, communications and transportation, portable type electronic products.Especially in departments such as national defence, telecommunications and finance, storage battery is one of critical component in these systems as the back-up source of system.Along with expanding economy, the use amount of storage battery increased year by year in recent years, and this production capacity to battery manufacturer has proposed requirements at the higher level.Wherein, the charging and discharging of accumulator device is that it is produced, the key equipment of test, the storage battery factory generally can be equipped with the hundreds of platform and finish corresponding operation to thousands of charge and discharge devices, its function mainly is that the power frequency ac voltage of will power is converted to adjustable DC voltage, and finishes charging and discharging of accumulator under control.At present, existing battery charge and discharge device can divide for by same group of circuit according to functional mode to be realized charging and discharges and charge, discharge and realize two classes respectively by different circuit, the technology that the former adopts is the Thyristor Controlled rectification, and the latter generally adopts the principle of DC chopped-wave.
Known Thyristor Controlled rectifying device is made of thyristor rectifier bridge, as shown in Figure 1, is Thyristor Controlled rectification battery charge and discharge device schematic diagram.Wherein 1 is the voltage matches transformer, and 2 is the three-phase thyristor rectifier bridge, and 3 are charging and discharge mode switch unit, and 4 is batteries to be charged.Regulate output dc voltage by the angle of flow that changes thyristor, this method and technology maturation, control are simple, but its shortcoming is that input power factor is very low, side harmonics is big, and be big to the influence of electrical network.Therefore generally also must be equipped with bulky power factor compensation device in addition, this class technology accounts for the market mainstream at present.Obviously, this technology path can not satisfy demand for development from now on.
Known DC chopped-wave device generally adds the DC chopped-wave unit by diode rectifier bridge and forms, as shown in Figure 2, and for storage battery copped wave charging adds resistance electric discharge device schematic diagram.Wherein 1 is diode rectifier bridge, and 2 is the DC chopped-wave unit, and 3 is batteries to be charged, and 4 is discharge resistance.Wherein alternating voltage becomes fixing direct voltage after the rectification, regulating output dc voltage by the DC chopped-wave unit then charges a battery, finish by other discharge resistance during battery discharging, this method is being better than the Thyristor Controlled rectification form aspect the input power factor index, energy is by resistance consumption during battery discharging, control simple and when not having discharge electrical network fall the problem of the inverter failure that causes suddenly, but need the bigger discharge resistance of volume during discharge, and do not make full use of energy.
Therefore, existing technology path can not satisfy demand for development, need actively seek new solution.
Summary of the invention
In order to overcome the existing storage battery charge and discharge device in power factor and the energy deficiency aspect utilizing, goal of the invention of the present utility model is to provide a kind of battery charge and discharge device, the mains side power factor can not only be improved with realization, and the purpose of electrical network energy can be made full use of.
The utility model contains accumulator cell charging and discharging assembly and total digital controller.
The accumulator cell charging and discharging assembly is composed in series by not controlling rectification unit, DC link filter unit and the two-way copped wave of DC-to-DC unit classification. and alternating voltage is transformed to direct voltage by not controlling rectification unit, during charging by chopper circuit to charge in batteries, during discharge the storage battery electric energy is fed back to intermediate dc electric capacity by booster circuit and store, discharge accumulators in next charging interval section. do not control rectification unit and form by diode rectifier bridge;
The DC link filter unit is composed in parallel by dc capacitor and high frequency absorption electric capacity; Connected by device for power switching and direct current outputting inductance and form in the two-way copped wave of DC-to-DC unit.
Total digital controller comprise electric current and voltage detect link, digital signal microprocessor,, the driving of pulse-width signal and protective circuit, and man-machine interface and communication unit.Described electric current and voltage detects link, is grouped into by dc tache voltage test section and output DC side current detecting part, the dc tache voltage test section, be attempted by DC link by voltage sensor or voltage difference parallel circuit input, detect direct voltage, output DC side current detecting part, be serially connected in output by current sensor or shunt, detect output DC stream; Described digital signal microprocessor,, its analog input is for detecting the detection voltage and current signal that link obtains from electric current and voltage, carry out conversion through the analog input interface circuit, be input to the analog-to-digital conversion interface of digital signal microprocessor then, digital signal microprocessor, comprise 2 tunnel pulse-width modulation delivery outlets and as 2 I/O mouths of assist control; The driving of described pulse-width signal and protective circuit (8), be input as 2 road width-modulation pulse signals of described pulse-width modulation delivery outlet and 2 I/O of assist control, with the I/O signal in the major loop, send into the I/O interface of digital signal processor through input I/O circuit, be responsible for the fault-signal of receiving equipment, realize failure protection function; Be output as 2 tunnel pulse-width modulation power drive signals, the contactless contactor of control appliance, realize equipment operation, stop controlled function; Described 2 tunnel pulse-width modulation power drive signals are connected to the corresponding device for power switching of the two-way copped wave part of DC-to-DC in the described accumulator cell charging and discharging assembly; Described man-machine interface and communication unit,, by CAN communication interface or 485 communication interfaces, signal such as receive operation that PC sends, suspend, stop, finishing liquid crystal display screen demonstration and with PC communicate by letter realization remote operation, record and monitoring function.
The utility model compared with prior art has the following advantages:
1, count the batteries of capacity for different ampere-hours, single-phase and the three phase supply power supply is all general; Output current capacity can be realized modular combination, highly versatile;
2, compare with traditional Thyristor Controlled rectifier system, save the discharge switch unit;
3, when discharge is discharged in the load during charging again and gone by the capacitance stores energy of DC filtering link, do not control the charge-discharge machine that rectification adds DC chopped-wave with tradition and compares, and saved discharge resistance, the utilization rate of electrical height;
4, net side power factor height, do not control rectification scheme by adjusting, power factor can reach 0.8-0.95, and the power factor of the charge and discharge device of Thyristor Controlled rectifier system mostly is between the 0.4-0.6, therefore need extra power factor compensation device, this programme can save outside power factor compensation device by comparison;
5, adopt the method for high frequency chopping, output voltage range is wide, output current dynamic accuracy height, and response speed is fast;
6, this programme can be realized any time power down safe shutdown on operation principle, has avoided damaging behind the Thyristor Controlled rectifying device inverter failure shortcoming of thyristor.
Description of drawings
Fig. 1 is a Thyristor Controlled rectification battery charge and discharge device schematic diagram in the prior art;
Fig. 2 adds resistance electric discharge device schematic diagram for storage battery copped wave charging in the prior art;
Fig. 3 major loop schematic diagram of the present utility model;
Fig. 4 is the utility model circuit logic theory diagram.
Embodiment
As shown in Figure 3, wherein 1 for not controlling rectification unit, and 2 is the DC link filter unit, and 3 is the two-way copped wave of DC-to-DC unit, constitutes the accumulator cell charging and discharging assembly.Do not control rectification unit 1, connect with the two-way copped wave of DC-to-DC unit 3 in DC link filter unit 2, wherein diode D7, D8 are the inverse parallel diode of power switch tube S 1, S2, input is an alternating-current voltage source, output termination accumulator load, detecting unit detects DC bus-bar voltage, output voltage and output current respectively.
When battery charge and discharge device was in charged state, switching tube S1, diode D8 and inductance L constituted BUCK (copped wave) circuit, for load provides adjustable average anode current.
When battery charge and discharge device is in discharge condition, switching tube S2, diode D7 and inductance L constitute BOOST (boosting) circuit, the storage battery electric energy is fed back to dc capacitor, and this part energy is released into load in next charging process, realizes making full use of of energy.
According to output voltage, current class difference, do not control rectification unit 1 and can adopt corresponding diode, the two-way copped wave of DC-to-DC unit 2 can adopt corresponding power semiconductor switch, as IGBT (insulated gate bipolar transistor), IPM (Intelligent Power Module) etc. can realize the battery charge and discharge device of different voltages, current class.
As shown in Figure 4, the utility model is made up of accumulator cell charging and discharging assembly 4, total digital controller 5, and wherein, total digital controller 5 is made up of the driving of digital signal microprocessor 7, pulse-width signal and protective circuit 8 and man-machine interface and communication unit 9.With high performance digital signal microprocessor (DSP) 7 TMS320LF2407A as TI company (a kind of high-performance digital signal processor) is core, in its 16 road PWM (pulse-width signal) delivery outlet, choose 2 road PWM (pulse-width signal) signal, drive 2 power semiconductor switchs of the two-way copped wave of DC-to-DC unit through the drive circuit of the driving 8 of pulsewidth modulation signal.The voltage detecting link is made of voltage sensor or voltage difference parallel circuit, is used to detect busbar voltage and output voltage; The current detecting link is made of shunt or current sensor, is used to detect output current; The electric current and voltage of voltage detecting link and current detecting link construction system detects link 6.The analog input interface circuit of the driving 8 of pulse-width signal is finished the function of signal condition and isolation, and electric current and voltage is detected the analog-to-digital conversion mouth that the detected voltage of link, current signal carry out being input to after the conversion DSP (digital signal processor).Software calculates the deviation of above-mentioned all voltage, current signal and set point in real time, predicts and send real-time PWM (pulse-width signal) control impuls, dynamically controls busbar voltage and output voltage, electric current with this.Man-machine interface and communication unit 9 finish by CAN communication interface or 485 communication interfaces that liquid crystal display screen shows and with the communicating by letter and monitoring function of PC; The switching value input-output unit of total digital controller 5 is finished the monitoring and the system failure defencive function of system running state; Other peripheral controlled function requires to decide on specific implementation.

Claims (5)

1. battery charge and discharge device, it is characterized in that: contain accumulator cell charging and discharging assembly (4) and total digital controller (5), accumulator cell charging and discharging assembly (4) is composed in series by not controlling rectification unit (1), DC link filter unit (2) and the two-way copped wave of DC-to-DC unit (3) classification, alternating voltage is transformed to direct voltage by not controlling rectification unit (1), during charging by chopper circuit to charge in batteries, during discharge the storage battery electric energy is fed back to intermediate dc electric capacity by booster circuit and store, discharge accumulators in next charging interval section.
2. battery charge and discharge device according to claim 1 is characterized in that: the described rectification unit (1) of not controlling is made up of diode rectifier bridge.
3. battery charge and discharge device according to claim 1 is characterized in that: described DC link filter unit (2) is composed in parallel by dc filter capacitor and high frequency absorption electric capacity.
4. battery charge and discharge device according to claim 1 is characterized in that: connected by device for power switching and direct current outputting inductance and form in the two-way copped wave of described DC-to-DC unit (3).
5. battery charge and discharge device according to claim 1 is characterized in that: total digital controller (5) comprises that electric current and voltage detects driving and protective circuit (8) and the man-machine interface and the communication unit (9) of link (6), digital signal microprocessor (7), pulse-width signal; Described electric current and voltage detects link (6) and is grouped into by dc tache voltage test section and output DC side current detecting part, the dc tache voltage test section, be attempted by DC link by voltage sensor or voltage difference parallel circuit input, detect direct voltage, output DC side current detecting part, be serially connected in output by current sensor or shunt, detect output DC stream; Described digital signal microprocessor (7), its analog input is for detecting the detection voltage and current signal that link obtains from electric current and voltage, carry out conversion through the analog input interface circuit, be input to the analog-to-digital conversion interface of digital signal microprocessor then, digital signal microprocessor (7) comprises 2 tunnel pulse-width modulation delivery outlets and as 2 I/O mouths of assist control; The driving of described pulse-width signal and protective circuit (8), be input as 2 road width-modulation pulse signals of described pulse-width modulation delivery outlet and 2 I/O of assist control, with the I/O signal in the major loop, send into the I/O interface of digital signal processor through input I/O circuit, be responsible for the fault-signal of receiving equipment, realize failure protection function; Be output as 2 tunnel pulse-width modulation power drive signals, the contactless contactor of control appliance, realize equipment operation, stop controlled function; Described 2 tunnel pulse-width modulation power drive signals are connected to the corresponding device for power switching of the two-way copped wave part of DC-to-DC in the described accumulator cell charging and discharging assembly; Described man-machine interface and communication unit (9), by CAN communication interface or 485 communication interfaces, signal such as receive operation that PC sends, suspend, stop, finishing liquid crystal display screen demonstration and with PC communicate by letter realization remote operation, record and monitoring function.
CN2009200855752U 2009-05-08 2009-05-08 Storage battery charging and discharging device CN201466775U (en)

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CN2009100619843A CN101882806B (en) 2009-05-08 2009-05-08 Storage battery charging and discharging device
CN2009200855752U CN201466775U (en) 2009-05-08 2009-05-08 Storage battery charging and discharging device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102130578A (en) * 2011-01-11 2011-07-20 张太平 Direct-current power supply containing storage battery feedback discharging loop
CN101882806B (en) * 2009-05-08 2012-11-28 湖北德普电气股份有限公司 Storage battery charging and discharging device
CN103078537A (en) * 2013-01-25 2013-05-01 南车株洲电力机车有限公司 Auxiliary converter cabinet circuit applicable to electric storage type subway engineering maintenance vehicle

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CN102064587A (en) * 2011-01-18 2011-05-18 中国船舶重工集团公司第七一二研究所 Storage battery charging and discharging device
CN104009528A (en) * 2013-02-27 2014-08-27 上海海事大学 Storage battery charging circuit and charging method thereof
CN104184343B (en) * 2013-05-21 2017-01-11 宝山钢铁股份有限公司 Silicon controlled rectifier rectification feedback apparatus
CN103401302A (en) * 2013-08-19 2013-11-20 南车株洲电力机车有限公司 Vehicle ground charging system
CN107302234B (en) * 2016-04-14 2019-09-27 中国科学院声学研究所 Pre-concentration pipe rapid heating circuit and its method
CN107444143A (en) * 2016-05-30 2017-12-08 大陆汽车投资(上海)有限公司 Energy recycle device used for electric vehicle
CN108599294A (en) * 2018-04-18 2018-09-28 上海工程技术大学 A kind of new energy charge and discharge control and data storage device

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Publication number Priority date Publication date Assignee Title
CN201038790Y (en) * 2007-01-17 2008-03-19 珠海泰坦科技股份有限公司 Bi-directional charging-discharging power
CN101388560A (en) * 2008-07-11 2009-03-18 中国科学院电工研究所 Accumulator charging system
CN201466775U (en) * 2009-05-08 2010-05-12 湖北国泰华瑞电子科技有限公司 Storage battery charging and discharging device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882806B (en) * 2009-05-08 2012-11-28 湖北德普电气股份有限公司 Storage battery charging and discharging device
CN102130578A (en) * 2011-01-11 2011-07-20 张太平 Direct-current power supply containing storage battery feedback discharging loop
CN103078537A (en) * 2013-01-25 2013-05-01 南车株洲电力机车有限公司 Auxiliary converter cabinet circuit applicable to electric storage type subway engineering maintenance vehicle

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