CN207968040U - A kind of Bidirectional variable-flow charging equipment based on energy feedback - Google Patents
A kind of Bidirectional variable-flow charging equipment based on energy feedback Download PDFInfo
- Publication number
- CN207968040U CN207968040U CN201820406480.5U CN201820406480U CN207968040U CN 207968040 U CN207968040 U CN 207968040U CN 201820406480 U CN201820406480 U CN 201820406480U CN 207968040 U CN207968040 U CN 207968040U
- Authority
- CN
- China
- Prior art keywords
- igbt
- circuits
- diode
- way
- emitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of Bidirectional variable-flow charging equipment based on energy feedback,Including two-way AC DC translation circuits,Two-way DC DC chopper circuits,Sample circuit,DSP control circuits,Power module,Sequential control circuit,Two-way AC DC translation circuits are separately connected three phase network and two-way DC DC chopper circuits,Two-way DC DC chopper circuits are separately connected two-way AC DC translation circuits and lead-acid accumulator,The input terminal of sample circuit is separately connected two-way AC DC translation circuits and two-way DC DC chopper circuits,The input terminal of the output end connection DSP control circuits of sample circuit,The output end of DSP control circuits is separately connected two-way AC DC translation circuits and two-way DC DC chopper circuits,Power module provides operating voltage for all chips,Sequential control circuit is separately connected sample circuit,Two-way AC/DC translation circuits,Two-way DC/DC chopper circuits and DSP control circuits.While the utility model effectively reduces polarization, efficiently charging, the discharge energy of negative pulse is fed back into power grid by former road, realizes that Bidirectional variable-flow and energy regenerating utilize.
Description
Technical field
The utility model is related to lead-acid accumulator quick charge and energy feedback technical fields, and in particular to one kind being based on energy
Measure the Bidirectional variable-flow charging equipment of feedback.
Background technology
With China's expanding economy, also increasing for the demand of the energy, lead-acid accumulator is as most widely used
A kind of secondary cell, play an important role in the various fields such as electric power, communication, medical treatment, automobile.However, wide with it
General application is compared, and the charging method of lead-acid accumulator still generally uses traditional constant current, constant voltage charging method, this charging
It is fully charged that method makes lead-acid accumulator cannot achieve, and long-time service also causes inside battery polarization phenomena serious so that pole
Plate is passivated, and greatly shortens service life, although some existing quick pulse charge methods have used the method for electric discharge to reduce
Polarization accelerates the speed of charging, but for the charging later stage, constant heavy current pulse is far longer than plumbic acid
The maximum acceptable electric current of accumulator, the extra electric energy in this part are ultimately applied to the water in electrolytic cell electrolyte inside, cause
Later stage battery temperature quickly increases, and the active material of pole plate is influenced the service life of battery by the air scour being precipitated, can be with
Say that fast-pulse charging is to change charging rate with the service life of accumulator.Simultaneously in large-scale lead-acid storage battery production mistake
Cheng Zhong, charging equipment all use traditional resistive dissipation mode, the energy of lead acid storage battery tank discharge are gone out with thermal energy consumption,
While resulting in waste of resources, the influence to environment is also than more serious, and on the other hand, additional discharge circuit connects equipment is increased
The complexity of line.For larger storage battery production producer, the electric energy expense to dissipate in cell production process just reaches
To 20% to the 30% of production cost, the policy for not meeting current environmental protection and energy-saving and emission-reduction is called, so these old production capacities must
It can so be eliminated.Simultaneously under high-power, high voltage use environment, need to occur in harm when generating system failure
Stringent effort are made before, so the response speed of system is particularly important.
Utility model content
In view of this, in order to solve the above problem in the prior art, the utility model proposes one kind being based on energy feedback
Bidirectional variable-flow charging equipment, using multistage positive negative pulse stuffing charging method, by multistage, periodic positive negative pulse stuffing and
It pauses to be fitted the charging curve of lead-acid accumulator, greatly reduces the polarization in charging process, realize high efficiency charging, together
When the discharge energy of negative pulse pressed into former channel inversion, the three-phase alternating current for exporting power frequency is fed back in power grid, realizes that energy returns
It receives and utilizes, while saving the manufacturing cost of charging equipment.In addition, using with the concurrent operation speed of the FPGA governor circuits constituted
Height can ensure response speed and the safe operation of charging equipment.
The utility model is solved the above problems by following technological means：
A kind of Bidirectional variable-flow charging equipment based on energy feedback, including two-way AC-DC translation circuits, bi-directional DC-DC are cut
Wave circuit, sample circuit, DSP control circuits, power module, sequential control circuit, the two-way AC-DC translation circuits connect respectively
Three phase network and bi-directional DC-DC chopper circuit are connect, the bi-directional DC-DC chopper circuit is separately connected two-way AC-DC translation circuits
And lead-acid accumulator, the input terminal of the sample circuit are separately connected two-way AC-DC translation circuits and bi-directional DC-DC copped wave electricity
Road, the input terminal of the output end connection DSP control circuits of the sample circuit, the output end of the DSP control circuits connect respectively
Two-way AC-DC translation circuits and bi-directional DC-DC chopper circuit are connect, the power module provides work electricity for all chips in equipment
Pressure, the sequential control circuit are separately connected sample circuit, two-way AC/DC translation circuits, two-way DC/DC chopper circuits and DSP
Control circuit；
Using three phase network as input terminal when charging, lead-acid accumulator is output end, with lead-acid accumulator is input when electric discharge
End, three phase network is output end, realizes Bidirectional variable-flow.
Further, the two-way AC-DC translation circuits include inductance La, inductance Lb, inductance Lc, inductance LaOne end connects
Three phase network VaPhase, the other end connect resistance RaOne end, inductance LbOne end connects three phase network VbPhase, the other end connect resistance Rb
One end, inductance LcOne end connects three phase network VcPhase, the other end connect resistance RcOne end, resistance RaThe other end connect respectively
Meet the collector of the emitter and the 4th IGBT of the first IGBT, resistance RbThe other end be separately connected the 3rd IGBT emitter and
The collector of 6th IGBT, resistance RcThe other end be separately connected the 5th IGBT emitter and the 2nd IGBT collector,
The anode of emitter the first diode of connection of one IGBT, the cathode of collector the first diode of connection of the first IGBT, first
First diode of IGBT and reverse parallel connection constitutes rectifier bridge VT1, the anode of emitter the second diode of connection of the 2nd IGBT,
The collector of 2nd IGBT connects the second diode composition rectifier bridge of the cathode of the second diode, the 2nd IGBT and reverse parallel connection
VT2, the anode of the emitter connection third diode of the 3rd IGBT, the collector connection third diode of the 3rd IGBT it is negative
The third diode of pole, the 3rd IGBT and reverse parallel connection constitutes rectifier bridge VT3, emitter the 4th diode of connection of the 4th IGBT
Anode, the collector of the 4th IGBT connects the 4th diode structure of the cathode of the 4th diode, the 4th IGBT and reverse parallel connection
At rectifier bridge VT4, the anode of emitter the 5th diode of connection of the 5th IGBT, the five or two pole of collector connection of the 5th IGBT
5th diode of the cathode of pipe, the 5th IGBT and reverse parallel connection constitutes rectifier bridge VT5, the emitter connection the 6th of the 6th IGBT
The six or two of the anode of diode, the cathode of collector the 6th diode of connection of the 6th IGBT, the 6th IGBT and reverse parallel connection
Pole pipe constitutes rectifier bridge VT6, emitter that the collector of the 5th IGBT passes through the 2nd IGBT of capacitance C connections.
Further, the bi-directional DC-DC chopper circuit includes the 7th IGBT, the 8th IGBT, the emitter of the 7th IGBT
The anode of the 7th diode is connected, the collector of the 7th IGBT connects the cathode of the 7th diode, the 7th IGBT and reverse parallel connection
The 7th diode constitute rectifier bridge VD1, the anode of emitter the 8th diode of connection of the 8th IGBT, the current collection of the 8th IGBT
Pole connects the 8th diode composition rectifier bridge VD of the cathode of the 8th diode, the 8th IGBT and reverse parallel connection2, the 7th IGBT's
Collector passes through capacitance C1Connect the emitter of the 8th IGBT, capacitance C1The both ends capacitance C are connected in parallel on, the emitter of the 7th IGBT connects
The one end inductance L is connect, the inductance L other ends pass through capacitance C2Connect the emitter of the 8th IGBT, capacitance C2It is connected in parallel on lead-acid accumulator two
End.
Further, the two-way AC-DC translation circuits are Three-phase PWM Voltage Rectifier, it is controlled by SVPWM
IGBT's turns on and off, and makes its difference according to input terminal and is operated under rectification or inverter mode, reach AC-DC,
The effect of DC-AC two-way changing.
Further, the bi-directional DC-DC chopper circuit is Boost/Buck chopper circuits, according to its upper and lower two IGBT
Switch transition, be operated in Boost chopper circuits pattern or Buck chopper circuit patterns, the function of Boost chopper circuits is to rise
Pressure, as lead acid storage battery tank discharge, the function of Buck chopper circuits are to be depressured, as lead acid battery charge, and output voltage,
Current amplitude is adjustable.
Further, the bi-directional DC-DC chopper circuit to lead acid battery charge when filled using multistage positive negative pulse stuffing
Method for electrically, periodically to lead-acid accumulator output positive pulse electric current, negative pulse current, pause, wherein positive pulse is used for plumbic acid
Accumulator charges, and pauses and eliminates ohmic polarization for lead-acid accumulator and absorb gas, negative pulse is lead acid storage battery tank discharge, is subtracted
Small concentration polarization and activation polarization.
Further, the sequential control circuit real-time monitoring equipment operating status, real-time display is filled on its display screen
The important parameter of piezoelectric voltage, electric current, and corresponding reaction can be quickly made according to operating status.
Further, the DSP control circuits use the digital signal processor TMD320F28335 of TI companies.
Compared with prior art, the beneficial effects of the utility model are as follows：
1), the utility model uses multistage positive negative pulse stuffing charging method, wherein positive pulse electric current to be used to store plumbic acid
Battery carries out quick charge, and negative pulse and pause can greatly reduce the influence of inside battery polarization, protect accumulator pole
Plate improves charge efficiency, ensures the service life of accumulator, while the energy of negative pulse discharge passes through bi-directional DC-DC copped wave electricity
Road and two-way AC-DC translation circuits carry out DC-DC-exchange conversion, by the road inversion of main circuit original, feed back in power grid, real
Existing energy recycles, while saving the manufacturing cost of charging equipment；
2), the utility model uses digital signal processor DSP as control core, and core is controlled using FPGA as system
The heart, using modular programming design, system is stablized, and dynamic response is good, and control accuracy is high.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the main circuit diagram of the utility model；
Fig. 3 is the two-way AC-DC translation circuits figure of the utility model；
Fig. 4 is the blended space that the different on off states of the utility model are indicated using 8 basic space vector of voltage
Voltage vector-diagram；
Fig. 5 is schematic diagrames of the utility model resultant vector V in the I of sector；
Fig. 6 is that the synthesized voltage vector of the utility model is handed over rotating a circle to obtain the sine wave in a cycle around sector
Galvanic electricity figure；
Fig. 7 is the bi-directional DC-DC chopper circuit figure of the utility model；
Fig. 8 is the multistage positive negative pulse stuffing mise-a-la-masse method charging current oscillogram of the utility model；
Fig. 9 is the sequential control circuit policing algorithm functional block diagram of the utility model；
Figure 10 is the data display algorithm functional block diagram of the utility model.
Specific implementation mode
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with attached drawing and
The technical solution of the utility model is described in detail in specific embodiment.It should be pointed out that described embodiment is only
Only it is the utility model a part of the embodiment, instead of all the embodiments, is based on the embodiments of the present invention, this field
The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to the utility model
The range of protection.
As shown in Figure 1, the utility model provides a kind of Bidirectional variable-flow charging equipment based on energy feedback, including it is two-way
AC-DC translation circuits, bi-directional DC-DC chopper circuit, sample circuit, DSP control circuits, power module, sequential control circuit, institute
It states two-way AC-DC translation circuits and is separately connected three phase network and bi-directional DC-DC chopper circuit, the bi-directional DC-DC chopper circuit
It is separately connected two-way AC-DC translation circuits and lead-acid accumulator, the input terminal of the sample circuit is separately connected two-way AC-DC and becomes
Change circuit and bi-directional DC-DC chopper circuit, the input terminal of the output end connection DSP control circuits of the sample circuit, the DSP
The output end of control circuit is separately connected two-way AC-DC translation circuits and bi-directional DC-DC chopper circuit.The sample circuit is double
DSP control circuits are output to AC-DC translation circuits and the sampled point collection voltages of bi-directional DC-DC chopper circuit, current value to make
Signal source in order to control.The power module provides operating voltage for all chips in equipment.The sequential control circuit connects respectively
Connect sample circuit, two-way AC/DC translation circuits, two-way DC/DC chopper circuits and DSP control circuits.The DSP control circuits are adopted
With the digital signal processor TMS320F28335 of TI companies.
As shown in Fig. 2, the main circuit of Bidirectional variable-flow charging equipment of the utility model based on energy feedback is to be sequentially connected
Two-way AC-DC translation circuits and bi-directional DC-DC chopper circuit, main circuit connect three phase network end when accumulator charges and be
Input terminal, connection battery-end are output end, and in battery discharging to connect battery-end as input terminal, connection three phase network end is
Output end exports corresponding PWM waveform driving power switching device IGBT by DSP control circuits, realizes Bidirectional variable-flow, that is, exist
Energy-feedback power grid is charged and discharged in same set of circuit, achievees the effect that energy-saving and emission-reduction, while eliminating additional put
The design requirement of circuit saves equipment manufacturing costs.
Fig. 3 is the two-way AC-DC translation circuits figure of the utility model main circuit, and the two-way AC-DC translation circuits include
Inductance La, inductance Lb, inductance Lc, inductance LaOne end connects three phase network VaPhase, the other end connect resistance RaOne end, inductance LbOne
End connection three phase network VbPhase, the other end connect resistance RbOne end, inductance LcOne end connects three phase network VcPhase, the other end connect
Connecting resistance RcOne end, resistance RaThe other end be separately connected the first IGBT emitter and the 4th IGBT collector, resistance Rb
The other end be separately connected the 3rd IGBT emitter and the 6th IGBT collector, resistance RcThe other end be separately connected the 5th
The collector of the emitter of IGBT and the 2nd IGBT, the emitter of the first IGBT connect the anode of the first diode, the first IGBT
Collector connect the cathode of the first diode, the first diode of the first IGBT and reverse parallel connection constitutes rectifier bridge VT1, second
The anode of emitter the second diode of connection of IGBT, the cathode of collector the second diode of connection of the 2nd IGBT, second
Second diode of IGBT and reverse parallel connection constitutes rectifier bridge VT2, the anode of the emitter connection third diode of the 3rd IGBT,
The third diode of the cathode of the collector connection third diode of 3rd IGBT, the 3rd IGBT and reverse parallel connection constitutes rectifier bridge
VT3, the emitter of the 4th IGBT connects the anode of the 4th diode, and the collector of the 4th IGBT connects the negative of the 4th diode
4th diode of pole, the 4th IGBT and reverse parallel connection constitutes rectifier bridge VT4, emitter the 5th diode of connection of the 5th IGBT
Anode, the collector of the 5th IGBT connects the 5th diode structure of the cathode of the 5th diode, the 5th IGBT and reverse parallel connection
At rectifier bridge VT5, the anode of emitter the 6th diode of connection of the 6th IGBT, the six or two pole of collector connection of the 6th IGBT
6th diode of the cathode of pipe, the 6th IGBT and reverse parallel connection constitutes rectifier bridge VT6, the collector of the 5th IGBT passes through capacitance
The emitter of the 2nd IGBT of C connections.
The two-way AC-DC translation circuits are Three-phase PWM Voltage Rectifier, Va、Vb、VcRespectively the three of three-phase equilibrium
Phase alternating-current voltage source, N points are the equalization point of three-phase voltage setting, La、Lb、LcFiltered electrical respectively on a, b, c phase input terminal
Sense, Ra、Rb、RcEquivalent resistance respectively on three-phase input channel, VT1~VT6It is constituted for 6 IGBT and anti-parallel diodes
Rectifier bridge, each bridge arm is made of upper and lower two IGBT, and the conducting state of upper lower switch is complementation, i.e., upper IGBT conductings when,
Lower IGBT cut-offs, conversely, when upper IGBT ends, lower IGBT conductings.Opening and ending for its IGBT is controlled by SVPWM, makes it
It is operated under rectification or inverter mode according to the difference of input terminal, achievees the effect that AC-DC, DC-AC conversion, when
When equipment is that positive pulse charges, Three-phase PWM Voltage Rectifier is input with power grid, and direct current is exported in DC side；Work as equipment
For negative pulse discharge when, Three-phase PWM Voltage Rectifier with bi-directional DC-DC chopper circuit be input, grid side export power frequency
Three-phase electricity, feed back to power grid.
The control principle of SVPWM is as follows, and the on off state of three bridge arms is indicated with a switch function：
Wherein k=a, b, c respectively represent three bridge arms.
8 basic space vector of voltage, V0 can be expressed as in vector space according to different on off states
(000), V1 (100), V2 (110), V3 (010), V4 (011), V5 (001), V6 (101), V7 (111), wherein V0, V7 are zero electricity
Vector is pressed, vector space is divided into 6 sectors, 8 space vector of voltage pass through IGBT switching tubes in rectification inverter circuit
Under effect, the blended space voltage vector V that synthesis one is rotated around origin, as shown in Figure 4.
Synthesized voltage vector is by the Space vector modulation of two certain times adjacent in the sector of place, building-up process
It is as follows：
In the I of sector, V can be by V1And V2It synthesizes, schematic diagrames of the resultant vector V in the I of sector be as shown in Figure 5.
According to parallelogram law, can obtain
VTS=V1T1+V2T2
Wherein TSFor PWM switch periods, i.e. sampling period, T1, T2Respectively V1, V2Vector holding in a sampling period
The continuous time.The duration for enabling two zero vectors common is T0,7, have
TS=T1+T2+T0,7
If resultant vector V and V1Angle be θ, according to sine, have
Wherein | V1|=| V2|=2Vdc/ 3, simultaneous TS=T1+T2+T0,7, can obtain
Wherein m is the SVPWM indexes of modulation,And so on, you can obtain the fundamental voltage arrow of all sectors
Measure the duration.Change space vector duration, synthesized voltage vector V will be rotated a circle to obtain in a cycle around sector
Sine wave alternating current, as shown in Figure 6.
As shown in fig. 7, the bi-directional DC-DC chopper circuit includes the 7th IGBT, the 8th IGBT, the emitter of the 7th IGBT
The anode of the 7th diode is connected, the collector of the 7th IGBT connects the cathode of the 7th diode, the 7th IGBT and reverse parallel connection
The 7th diode constitute rectifier bridge VD1, the anode of emitter the 8th diode of connection of the 8th IGBT, the current collection of the 8th IGBT
Pole connects the 8th diode composition rectifier bridge VD of the cathode of the 8th diode, the 8th IGBT and reverse parallel connection2, the 7th IGBT's
Collector passes through capacitance C1Connect the emitter of the 8th IGBT, capacitance C1The both ends capacitance C are connected in parallel on, the emitter of the 7th IGBT connects
The one end inductance L is connect, the inductance L other ends pass through capacitance C2Connect the emitter of the 8th IGBT, capacitance C2It is connected in parallel on lead-acid accumulator two
End.
The bi-directional DC-DC chopper circuit is Boost/Buck chopper circuits, by capacitance C1, capacitance C2, inductance L and two
There is the IGBT power switch tubes VT of anti-parallel diodes1、VT2Composition, wherein capacitance C2It is connected in parallel on the progress of lead-acid accumulator front end
Low-pass filtering filters off the high-frequency signal generated by switch.Bi-directional DC-DC chopper circuit is according to its upper and lower two switching tube IGBT's
Transition is switched, Boost chopper circuits pattern or Buck chopper circuit patterns are operated in.When upper IGBT replaces break-make, lower IGBT is cut
Only, bi-directional DC-DC chopper circuit shows as Boost chopper circuits, and the function of Boost chopper circuits is boosting, that is, is discharged, by lead
Acid accumulator exports the DC voltage more slightly higher than rectifier output voltage by boosting, then whole by three-phase voltage type PWM as power supply
Flow device inversion；When upper IGBT ends, upper IGBT replaces break-make, and bi-directional DC-DC chopper circuit shows as Buck chopper circuits, Buck
The function of chopper circuit is decompression, that is, is charged, according to charging requirement output voltage and electric current, and output voltage, current amplitude can
It adjusts.
As shown in figure 8, using multistage positive negative pulse stuffing charging method, i.e. period when charging equipment is to lead acid battery charge
Property to lead-acid accumulator output positive pulse electric current, negative pulse current, pause, wherein positive pulse is used to charge to battery, pauses and uses
Ohmic polarization is eliminated in battery and absorbs gas, and negative pulse is electric discharge, reduces concentration polarization and activation polarization.It is charging simultaneously
Initially, what is accessed in order to prevent is new battery or the battery by deep discharge, will directly be damaged using large current pulse charging
Bad accumulator reduces service life, so using the constant low current pair of 0.01CA before starting the charging of multistage positive negative pulse stuffing
Lead-acid accumulator restores the initial state of charge of battery into line precharge, then starts pulse charge process.In pulse charge rank
Section process charges to accumulator using a constant positive pulse electric current, and battery terminal voltage gradually rises at this time, when rising to a threshold
When value, enter next stage pulse charge after stopping charging a period of time, in order to more meet the charging curve of battery, the next stage adopts
With smaller positive pulse electric current, while negative pulse current does reduction appropriate according to the positive pulse size of current in the stage, so
Cycle is for several times.When battery terminal voltage arrives again at threshold value, constant-voltage charge is carried out using current charging voltage, at this time charging current
It can be gradually reduced, when being reduced to certain value, it is believed that lead acid battery charge is completed, and charging is stopped.
As shown in figure 9, starting security control is opened by controlling DSP switches, threephase switch, bus-tie circuit breaker and battery successively
It closes, to reach the function of preliminary filling.Operational safety control be by monitoring device indices, when find index there is exception after,
It is rapid to disconnect three-phase and the connection of equipment and the connection of battery and equipment, to achieve the purpose that operational safety controls.Power-off
Security control is, after device powers down or Indexes Abnormality lead to device powers down, by busbar end resistance to the residual energy in equipment
Amount is discharged, and disconnects all connections, to achieve the purpose that power outage security.
As shown in Figure 10, the function of display module is that driving LCD is shown.The operational process of the module is to produce first
The raw clock shown for LCD, under the drive of clock, LCD sets various functions, the voltage and current that will finally obtain at any time
Value carries out cycle and shows.
Specially：
The security control that starts and runs of charging equipment is completed by sequential control circuit, by controlling relay, is completed
Start security control, the control of operational safety control box power outage security.
Before lead acid battery charge, access in order to prevent be new battery or by deep discharge battery, first with
The precharge that constant 0.01CA electric currents carry out a period of time prevents from directly using high current to restore the charged state of battery
Charging damage accumulator.
When detecting that battery terminal voltage is higher than given threshold, multistage positive negative pulse stuffing charging, and detection electricity in real time are carried out
Pond terminal voltage, when terminal voltage rises to certain value, next stage is added in pulse charge, uses the more smaller pulse than on last stage
Electric current charges, and wherein negative pulse current size changes according to positive pulse electric current, after so recycling for several times, when battery-end electricity
When pressure rises to certain value again, into the charging stage is supplied, constant-voltage charge is carried out using current charging voltage, at this time charging electricity
Stream is gradually reduced, and after charging current is reduced to certain value, is judged as that lead acid battery charge is completed, is stopped charging at this time.
When negative pulse discharge, the energy content of battery is boosted by bi-directional DC-DC chopper circuit, is reversely output to two-way AC-
On DC translation circuits, two-way AC-DC translation circuits are according to SVPWM algorithms, by the DC inverter after boosting at the three-phase of power frequency
Alternating current, and be output in power grid, realize energy feedback.
The Current Voltage that above procedure is acquired according to sample circuit on charging equipment main circuit in real time by DSP control circuits
Value exports IGBT on corresponding PWM wave driving main circuit and completes.
The utility model has the advantage of：Using the multistage positive negative pulse stuffing charging method for meeting battery charging curve, have
While effect reduces polarization, efficiently charging, the discharge energy of negative pulse is fed back into power grid by former road, realizes Bidirectional variable-flow
It is utilized with energy regenerating, energy-saving and emission-reduction, and reduces manufacturing cost, and use FPGA real-time monitoring equipment operating statuses, will filled
The important parameters real-time display such as piezoelectric voltage, electric current, and can quickly be made a response according to operating status, charging equipment dynamic response
It is good.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. a kind of Bidirectional variable-flow charging equipment based on energy feedback, which is characterized in that including two-way AC-DC translation circuits, double
To DC-DC chopper circuits, sample circuit, DSP control circuits, power module, sequential control circuit, the two-way AC-DC transformation
Circuit is separately connected three phase network and bi-directional DC-DC chopper circuit, and the bi-directional DC-DC chopper circuit is separately connected two-way AC-
The input terminal of DC translation circuits and lead-acid accumulator, the sample circuit is separately connected two-way AC-DC translation circuits and two-way DC-
DC chopper circuits, the input terminal of the output end connection DSP control circuits of the sample circuit, the output of the DSP control circuits
End is separately connected two-way AC-DC translation circuits and bi-directional DC-DC chopper circuit, and the power module is that all chips carry in equipment
For operating voltage, the sequential control circuit is separately connected sample circuit, two-way AC/DC translation circuits, two-way DC/DC copped waves electricity
Road and DSP control circuits；
Using three phase network as input terminal when charging, lead-acid accumulator is output end, using lead-acid accumulator as input terminal when electric discharge, three
Phase power grid is output end, realizes Bidirectional variable-flow.
2. the Bidirectional variable-flow charging equipment according to claim 1 based on energy feedback, which is characterized in that described two-way
AC-DC translation circuits include inductance La, inductance Lb, inductance Lc, inductance LaOne end connects three phase network VaPhase, the other end connect resistance
RaOne end, inductance LbOne end connects three phase network VbPhase, the other end connect resistance RbOne end, inductance LcOne end connects three-phase electricity
Net VcPhase, the other end connect resistance RcOne end, resistance RaThe other end be separately connected the emitter and the 4th IGBT of the first IGBT
Collector, resistance RbThe other end be separately connected the 3rd IGBT emitter and the 6th IGBT collector, resistance RcIt is another
End is separately connected the collector of the emitter and the 2nd IGBT of the 5th IGBT, and the emitter of the first IGBT connects the first diode
Anode, the collector of the first IGBT connect the first diode composition of the cathode of the first diode, the first IGBT and reverse parallel connection
Rectifier bridge VT1, the anode of emitter the second diode of connection of the 2nd IGBT, collector the second diode of connection of the 2nd IGBT
Cathode, the second diode of the 2nd IGBT and reverse parallel connection constitutes rectifier bridge VT2, the emitter connection the three or two of the 3rd IGBT
Three or two pole of the anode of pole pipe, the cathode of the collector connection third diode of the 3rd IGBT, the 3rd IGBT and reverse parallel connection
Pipe constitutes rectifier bridge VT3, the anode of emitter the 4th diode of connection of the 4th IGBT, the collector connection the 4th of the 4th IGBT
4th diode of the cathode of diode, the 4th IGBT and reverse parallel connection constitutes rectifier bridge VT4, the emitter connection of the 5th IGBT
The anode of 5th diode, the collector of the 5th IGBT connect the cathode of the 5th diode, and the of the 5th IGBT and reverse parallel connection
Five diodes constitute rectifier bridge VT5, the anode of emitter the 6th diode of connection of the 6th IGBT, the collector company of the 6th IGBT
Meet the 6th diode composition rectifier bridge VT of the cathode of the 6th diode, the 6th IGBT and reverse parallel connection6, the current collection of the 5th IGBT
The emitter that pole passes through the 2nd IGBT of capacitance C connections.
3. the Bidirectional variable-flow charging equipment according to claim 2 based on energy feedback, which is characterized in that described two-way
DC-DC chopper circuits include the 7th IGBT, the 8th IGBT, and the emitter of the 7th IGBT connects the anode of the 7th diode, and the 7th
The collector of IGBT connects the 7th diode composition rectifier bridge VD of the cathode of the 7th diode, the 7th IGBT and reverse parallel connection1,
The emitter of 8th IGBT connects the anode of the 8th diode, and the collector of the 8th IGBT connects the cathode of the 8th diode, the
8th diode of eight IGBT and reverse parallel connection constitutes rectifier bridge VD2, the collector of the 7th IGBT passes through capacitance C1Connect the 8th
The emitter of IGBT, capacitance C1It is connected in parallel on the both ends capacitance C, one end emitter connection inductance L of the 7th IGBT, the inductance L other ends
Pass through capacitance C2Connect the emitter of the 8th IGBT, capacitance C2It is connected in parallel on lead-acid accumulator both ends.
4. the Bidirectional variable-flow charging equipment according to claim 2 based on energy feedback, which is characterized in that described two-way
AC-DC translation circuits are Three-phase PWM Voltage Rectifier, control turning on and off for its IGBT by SVPWM, make it according to defeated
Enter the difference at end and be operated under rectification or inverter mode, achievees the effect that AC-DC, DC-AC two-way changing.
5. the Bidirectional variable-flow charging equipment according to claim 3 based on energy feedback, which is characterized in that described two-way
DC-DC chopper circuits are that Boost/Buck chopper circuits are operated in Boost and cut according to the switch transition of its upper and lower two IGBT
Wave circuit pattern or Buck chopper circuit patterns, the function of Boost chopper circuits are to boost, as lead acid storage battery tank discharge,
The function of Buck chopper circuits is decompression, as lead acid battery charge, and output voltage, current amplitude are adjustable.
6. the Bidirectional variable-flow charging equipment according to claim 1 based on energy feedback, which is characterized in that described two-way
Multistage positive negative pulse stuffing charging method is used when DC-DC chopper circuits are to lead acid battery charge, periodically to lead-acid accumulator
Positive pulse electric current, negative pulse current, pause are exported, wherein positive pulse is used to, to lead acid battery charge, pause and store for plumbic acid
Battery eliminates ohmic polarization and absorbs gas, and negative pulse is lead acid storage battery tank discharge, reduces concentration polarization and activation polarization.
7. the Bidirectional variable-flow charging equipment according to claim 1 based on energy feedback, which is characterized in that the sequential control
Circuit real-time monitoring equipment operating status processed, on its display screen real-time display charging voltage, electric current important parameter, and can root
Corresponding reaction is quickly made according to operating status.
8. the Bidirectional variable-flow charging equipment according to claim 1 based on energy feedback, which is characterized in that the DSP controls
Circuit processed uses the digital signal processor TMD320F28335 of TI companies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820406480.5U CN207968040U (en) | 2018-03-26 | 2018-03-26 | A kind of Bidirectional variable-flow charging equipment based on energy feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820406480.5U CN207968040U (en) | 2018-03-26 | 2018-03-26 | A kind of Bidirectional variable-flow charging equipment based on energy feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207968040U true CN207968040U (en) | 2018-10-12 |
Family
ID=63726193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820406480.5U Expired - Fee Related CN207968040U (en) | 2018-03-26 | 2018-03-26 | A kind of Bidirectional variable-flow charging equipment based on energy feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207968040U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494853A (en) * | 2018-11-27 | 2019-03-19 | 江苏万帮德和新能源科技股份有限公司 | A kind of connection control system of the high-tension electricity electronic transformer of charging |
| CN109525138A (en) * | 2018-11-27 | 2019-03-26 | 江苏万帮德和新能源科技股份有限公司 | A kind of power module discharge system |
| CN113676046A (en) * | 2021-08-31 | 2021-11-19 | 深圳市雅晶源科技有限公司 | Power protection circuit of gallium nitride quick charging source |
| CN113839458A (en) * | 2021-08-31 | 2021-12-24 | 深圳市雅晶源科技有限公司 | Super quick charger based on gallium nitride |
| CN115955117A (en) * | 2023-02-17 | 2023-04-11 | 深圳先进储能材料国家工程研究中心有限公司 | Direct-current power supply conversion device for bridging new energy power generation, energy storage and microgrid |
| JP7431866B2 (en) | 2021-07-29 | 2024-02-15 | 寧徳時代新能源科技股▲分▼有限公司 | Charging/discharging device, battery charging method, and charging/discharging system |
-
2018
- 2018-03-26 CN CN201820406480.5U patent/CN207968040U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494853A (en) * | 2018-11-27 | 2019-03-19 | 江苏万帮德和新能源科技股份有限公司 | A kind of connection control system of the high-tension electricity electronic transformer of charging |
| CN109525138A (en) * | 2018-11-27 | 2019-03-26 | 江苏万帮德和新能源科技股份有限公司 | A kind of power module discharge system |
| JP7431866B2 (en) | 2021-07-29 | 2024-02-15 | 寧徳時代新能源科技股▲分▼有限公司 | Charging/discharging device, battery charging method, and charging/discharging system |
| CN113676046A (en) * | 2021-08-31 | 2021-11-19 | 深圳市雅晶源科技有限公司 | Power protection circuit of gallium nitride quick charging source |
| CN113839458A (en) * | 2021-08-31 | 2021-12-24 | 深圳市雅晶源科技有限公司 | Super quick charger based on gallium nitride |
| CN113676046B (en) * | 2021-08-31 | 2023-01-10 | 深圳市雅晶源科技有限公司 | Power protection circuit of gallium nitride quick charging source |
| CN113839458B (en) * | 2021-08-31 | 2023-02-14 | 深圳市雅晶源科技有限公司 | Super quick charger based on gallium nitride |
| CN115955117A (en) * | 2023-02-17 | 2023-04-11 | 深圳先进储能材料国家工程研究中心有限公司 | Direct-current power supply conversion device for bridging new energy power generation, energy storage and microgrid |
| CN115955117B (en) * | 2023-02-17 | 2023-12-08 | 深圳先进储能材料国家工程研究中心有限公司 | Direct-current power supply conversion device for bridging new energy power generation, energy storage and micro-grid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207968040U (en) | A kind of Bidirectional variable-flow charging equipment based on energy feedback | |
| CN102684525B (en) | The control method of inverter circuit and inverter circuit | |
| CN110149065A (en) | A kind of buck switching capacity multi-electrical level inverter and its modulator approach | |
| CN101976854A (en) | Photovoltaic power generation single phase grid-connected inverter | |
| CN104270022B (en) | Photovoltaic grid connected inversion circuit, switch control circuit and control method | |
| CN102916603A (en) | Single-phase unsymmetrical multi-level inverter with pre-charging circuit and charging method of single-phase unsymmetrical multi-level inverter | |
| CN107086600A (en) | A kind of solar energy power generating three phase full bridge grid-connected inverting system | |
| CN106849728B (en) | The control method of the non-isolated photovoltaic DC-to-AC converter of Clamp three-phase with continued flow switch | |
| CN110460259A (en) | Ten switch of one kind staggeredly clamps three-phase photovoltaic inverter topological structure | |
| CN101567573B (en) | Uninterrupted power and control method thereof | |
| CN111244992A (en) | Hybrid energy storage unit, cascade type converter system and charge-discharge control method thereof | |
| CN101599656A (en) | A kind of charge-discharge machine for power storage battery test system | |
| CN106208141A (en) | A kind of V2G charge and discharge device with no-power compensation function | |
| CN207251220U (en) | A kind of solar energy power generating three phase full bridge grid-connected inverting system | |
| CN2907030Y (en) | Low-harmonic variable-frequency speed regulator with reactive power compensation function | |
| CN205945096U (en) | V2G fills discharge device with reactive compensation function | |
| CN203747661U (en) | Pre-charge device of wind power current transformer and wind power current transformer | |
| CN206004379U (en) | A kind of electric automobile and vehicle-mounted charger of buck one | |
| CN204578144U (en) | A kind of double-T shaped three level on line type UPS power supply | |
| CN107026475B (en) | A kind of distributed solar electricity generation system enters network control method | |
| CN207732448U (en) | A kind of energy accumulation current converter and energy storage converter system | |
| CN207541165U (en) | A kind of charging equipment and its burn in test circuit | |
| CN104821627A (en) | Charging and discharging circuit | |
| CN107707010A (en) | A kind of photovoltaic charged circuit system | |
| CN206517300U (en) | A kind of constant current input power controls circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20190326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |