CN209233527U - A kind of inversion feedback grid formula battery group charging/discharging apparatus - Google Patents
A kind of inversion feedback grid formula battery group charging/discharging apparatus Download PDFInfo
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- CN209233527U CN209233527U CN201920035710.6U CN201920035710U CN209233527U CN 209233527 U CN209233527 U CN 209233527U CN 201920035710 U CN201920035710 U CN 201920035710U CN 209233527 U CN209233527 U CN 209233527U
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Abstract
The utility model provides a kind of inversion feedback grid formula battery group charging/discharging apparatus, including the online switching device of battery pack, drive control circuit, the first MCU control unit, working power circuit, high frequency DC/AC converter and current-limiting charging circuit unit；Battery group, which is gated, by the online switching device of battery pack is connected to working power circuit both ends；The online switching device of battery pack and current-limiting charging circuit unit simultaneously connect；High frequency DC/AC converter is connect with the online switching device of battery pack, three-phase alternating current alternating current, working power circuit and the first MCU control unit respectively；First MCU control unit is connect with working power circuit, and the online switching device of battery pack is connect by drive control circuit with the first MCU control unit, and current-limiting charging circuit unit is connect with the first MCU control unit.The utility model advantage: solve the problems, such as that system can not carry out discharge test without actual loading or ups system battery pack can not step-up discharge test.
Description
Technical field
The utility model relates to a kind of power-source maintenance equipment, in particular to a kind of inversion feedback grid formula battery group charge and discharge
Electric equipment.
Background technique
The power supply backup battery maintenance management of the ups system of electricity substation and each large data center, because of its quantity
More, scale is big, maintenance work labor intensity is high, at high cost, risk greatly, maintenance work task is heavy and waste of energy etc. is asked
Topic, causes most backup battery group charge-discharge test maintenance work all to fail to implement completely, including to backup batteries
Actual capacity do not know about, emergency guarantee powers duration is unclear, commercial power interruption not can be effectively carried out emergency power generation scheduling pipe
Reason etc., this frequently can lead to the generation of electricity substation accident or data center's power-fail interrupt accident, and battery group is also normal
Often scrapped in advance.Problems above annoyings always the ups system row of entire electricity substation industry, each large data center
Industry power-source maintenance managing and serving system and specific maintenance staff.
Certainly, existing in the prior art to have relevant power-source maintenance equipment, still, the conventional long-range charge and discharge of fictitious load formula
Electric system causes it to there is electricity substation or data center scene since it can generate a large amount of heat at work
Very big safety hazards.
Applicant is 2017.10.25 in the applying date, applies application No. is 201711008727.4 and discloses a kind of distribution
The charge/discharge test device of formula online battery group entirely, still, the DC/DC boost type charge/discharge test device is in electricity substation
With in the two fields of ups system and be not suitable for, wherein the operation power of electricity substation is in normal work substantially without real
Border load current, therefore step-up discharge can not be carried out；And the battery group of ups system is work in backup status, i.e.,
Allowing to be boosted can not also discharge.
Ups system power supply backup batteries in order to realize electricity substation industry and each large data center are entirely online
Unattended intelligent monitoring management can be realized the online battery group charge/discharge capacity of the whole network it is urgent to provide one kind and detect automatically
And the equipment of the automatic maintenance management of system.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of inversion feedback grid formula battery group charge and discharge and sets
It is standby, the ups system power supply standby electric power storage of electricity substation industry and each large data center can be realized by the charging/discharging apparatus
The online unattended intelligent monitoring management of Chi Zuquan.
The utility model is realized in this way: a kind of inversion feedback grid formula battery group charging/discharging apparatus, the electric power storage
Pond group includes one first online battery group and one second online battery group；The charging/discharging apparatus includes that a battery pack exists
Line switching device, a drive control circuit, one first MCU control unit, a working power circuit, a high frequency DC/AC converter
An and current-limiting charging circuit unit；
The first online battery group and the second online battery group are connect with the online switching device of the battery pack,
And it is connected to by the online switching device gating of the battery pack first online battery group or the second online battery group
The both ends of the working power circuit；
The online switching device of battery pack and the current-limiting charging circuit unit simultaneously connect；The high frequency DC/AC converter
Direct-flow input end connect with the online switching device of the battery pack, the three-phase alternating current output end of the high frequency DC/AC converter
It is electrically connected with three-phase alternating current city, the high frequency DC/AC converter is also single with the working power circuit and the first MCU control respectively
Member connection；
First MCU control unit is connect with the working power circuit, and the online switching device of battery pack passes through
The drive control circuit is connect with first MCU control unit, and the current-limiting charging circuit unit and the first MCU are controlled
Unit connection processed.
Further, the charging/discharging apparatus further includes a current/voltage data acquisition circuit, voltage and current acquisition
Circuit, a telecommunication circuit and data storage and human-computer interaction circuit；The current/voltage data acquisition circuit, electricity
Pressure and current collection circuit, telecommunication circuit and data store with human-computer interaction circuit with the first MCU unit phase
Connection.
Further, the high frequency DC/AC converter includes an isolated form DC/DC boosting inverter module, DC/AC transformation
Module, one second MCU control unit, direct current boost voltage acquisition are with feedback control circuit and inverter power acquisition and instead
Present adjusting control circuit；The input terminal phase of the online switching device of battery pack and the isolated form DC/DC boosting inverter module
Connection, the output end of the isolated form DC/DC boosting inverter module are connected with the input terminal of the DC/AC conversion module, institute
State the output end connection three-phase alternating current alternating current of DC/AC conversion module；The DC boosting voltage acquisition and feedback control circuit point
It is not connected with the isolated form DC/DC boosting inverter module and the second MCU control unit；The inverter power acquisition and feedback
Adjusting control circuit is connected with the DC/AC conversion module and the second MCU control unit respectively.
Further, the charging/discharging apparatus has a negative pole end G；
The online switching device of battery pack includes that circuit is protected in the online afterflow of two equipotential link switch K1, K2 and two
D1, D2, the online switching device of battery pack also have two input terminal B1, B2 and two output end C1, C2；
The equipotential link switch K1 is separately connected the input terminal after line afterflow protection circuit D1 is in parallel with described
B1 and output end C1；
The equipotential link switch K2 is separately connected the input terminal B2 after line afterflow protection circuit D2 connects with described
With output end C2；
Described input terminal B1, B2 are separately connected the anode of the described first online battery group and the second online battery group；
The both ends of the working power circuit are separately connected the output end C1 and negative pole end G.
Further, also there are the online switching device of the battery pack two inside to switch switch KB, KC, the internal switching
Switch KB, KC respectively with the both ends of the current-limiting charging circuit unit and connect；
The internal switching switch KB is correspondingly arranged on two switch terminals KB1, KB2, and the internal switching switch KC correspondence is set
It is equipped with two switch terminals KC1, KC2；
The switch terminal KB1 connection input terminal B1, the switch terminal KB2 connection input terminal B2；The switching
Hold the KC1 connection output end C1, the switch terminal KC2 connection output end C2.
Further, the cathode of the described first online battery group and the second online battery group is connected to cathode mother
Row, the cathode bus bar are connect with the negative pole end G；Described output end C1, C2 are connected to a positive busbar.
Further, the current-limiting charging circuit unit is resistor.
Utility model has the advantages that
1, the design and application of the utility model inversion feedback grid formula online battery group charging/discharging apparatus entirely meets and stores
Battery discharge characteristic, related communication power supply operation and maintenance norm standard and battery group maintenance test request, discharge examination exist entirely
Wire type and the energy-saving safe that discharges；
2, the design and application of the utility model inversion feedback grid formula online battery group charging/discharging apparatus entirely has and stores
Battery pack carries out energy-saving safe discharging function to practical alternating current three-phase 380V or single-phase 220V AC network load online, is suitable for
It now nets different communication equipment power supply backup batteries and carries out online constant-current discharge test；
3, it is concatenated by seamless link technology with tested battery group, guarantees tested battery group always
In safe presence, the normal safe power supply to communication system equipment is not influenced, realizes tested battery group to survey
The discharge parameter for trying equipment setting online discharges to practical alternating current three-phase 380V or single-phase 220V AC network load；
4, after completing discharge capacity test, by online rectifier or charger output power supply, pass through charge and discharge
Equipment, which automatically controls, carries out online current-limiting charge, and completes equipotential secure connection；
5, off-line test comparison is carried out using intelligent fictitious load with tradition, efficiently solves offline discharge operation, confession
Electricity and the online overall process maintenance test security hidden trouble of recovery, have energy saving, easy to operate and safe, online power supply safety, survey
Examination terminates the advantages that being charged online automatically and restore equipotential link；
6, compared with tradition using the DC/DC energy saving discharge test that boosts, efficiently solve system without actual loading nothing
Method carry out the battery pack work in discharge test or ups system backup mode and can not step-up discharge test the problem of, because
This, applicability and versatility are more powerful；
7, outputting and inputting for the utility model inversion feedback grid formula system is all to complete to be isolated by transformer, can
Ensure to output and input safe；
8, the utility model inversion feedback grid formula system, which has, carries out constant-current discharge, invariable power electric discharge etc. to battery group
Function；
9, the output of the utility model inversion feedback grid formula system has pressure stabilizing current limliting, pressure limiting current stabilization control protection function
Can, and output overcurrent, overvoltage protection and over-voltage shutdown defencive function, have the communication online discharge capacity of backup battery group
Detection and safe power supply protect feature；
10, the control system output of the first MCU unit of the utility model inversion feedback grid formula system, has criterion numeral
According to interface and RS485 interface, TCP/IP network is extended, GPRS/3G/4G interface is flexible and convenient to use.
Detailed description of the invention
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of inversion feedback grid formula battery group charging/discharging apparatus functional block diagram of the utility model.
Fig. 2 is the inside functional block diagram of the utility model medium-high frequency DC/AC converter.
Specific embodiment
Please emphasis referring to figs. 1 to shown in Fig. 2, a kind of 200 charge and discharge of inversion feedback grid formula battery group of the utility model
Equipment 100, the battery group 200 include one first online battery group 201 and one second online battery group 202；Institute
State charging/discharging apparatus 100 include the online switching device 1 of a battery pack, a drive control circuit 2, one first MCU control unit 3,
One working power circuit 4, a high frequency DC/AC converter 5 and a current-limiting charging circuit unit 6；
The first online battery group 201 and the second online battery group 202 switch dress with the battery pack online
1 connection is set, and the described first online battery group 201 or the second online storage are gated by the online switching device 1 of the battery pack
Battery pack 202 is connected to the both ends of the working power circuit 4；
The online switching device 1 of battery pack and the current-limiting charging circuit unit 6 simultaneously connect；The high frequency DC/AC transformation
The direct-flow input end of device 5 is connect with the online switching device 1 of the battery pack, and the three-phase alternating current of the high frequency DC/AC converter 5 is defeated
Outlet is connect with three-phase alternating current alternating current 300, the high frequency DC/AC converter 5 also respectively with the working power circuit 4 and first
MCU control unit 3 connects；
First MCU control unit 3 is connect with the working power circuit 4, and the online switching device 1 of battery pack is logical
It crosses the drive control circuit 2 to connect with first MCU control unit 3, the current-limiting charging circuit unit 6 and described first
MCU control unit 3 connects.
The charging/discharging apparatus 100 further includes a current/voltage data acquisition circuit 7, a voltage and current Acquisition Circuit
8, a telecommunication circuit 9 and data storage and human-computer interaction circuit 10；The current/voltage data acquisition circuit 7, electricity
Pressure and current collection circuit 8, telecommunication circuit 9 and data storage and human-computer interaction circuit 10 are mono- with the first MCU
Member 3 is connected.
Please emphasis referring to shown in Fig. 2, the high frequency DC/AC converter 5 includes an isolated form DC/DC boosting inverter module
51, a DC/AC conversion module 52, one second MCU control unit 53, a direct current boost voltage acquisition with feedback control circuit 54 with
And one inverter power acquisition with feedback regulation control circuit 55；The online switching device 1 and isolated form DC/DC of battery pack
The input terminal of boosting inverter module 51 is connected, the output end and the DC/AC of the isolated form DC/DC boosting inverter module 51
The input terminal of conversion module 52 is connected, and the output end of the DC/AC conversion module 52 connects three-phase alternating current alternating current 300；It is described
DC boosting voltage acquisition and feedback control circuit 54 respectively with the isolated form DC/DC boosting inverter module 51 and the 2nd MCU
Control unit 53 is connected；Inverter power acquisition and feedback regulation control circuit 55 respectively with the DC/AC conversion module
52 are connected with the second MCU control unit 53.
The charging/discharging apparatus 100 has a negative pole end G；
The online switching device 1 of battery pack includes the online afterflow protection electricity of two equipotential link switch K1, K2 and two
Road D1, D2, the online switching device 1 of battery pack also have two input terminal B1, B2 and two output end C1, C2；
The equipotential link switch K1 is separately connected the input terminal after line afterflow protection circuit D1 is in parallel with described
B1 and output end C1；
The equipotential link switch K2 is separately connected the input terminal B2 after line afterflow protection circuit D2 connects with described
With output end C2；
Described input terminal B1, B2 are separately connected the described first online battery group 201 and the second online battery group 202
Anode；
The both ends of the working power circuit 4 are separately connected the output end C1 and negative pole end G.
The online switching device 1 of battery pack, which also has, switches switch KB, KC inside two, the internal switching switch KB,
KC respectively with the both ends of the current-limiting charging circuit unit 6 and connect；
The internal switching switch KB is correspondingly arranged on two switch terminals KB1, KB2, and the internal switching switch KC correspondence is set
It is equipped with two switch terminals KC1, KC2；
The switch terminal KB1 connection input terminal B1, the switch terminal KB2 connection input terminal B2；The switching
Hold the KC1 connection output end C1, the switch terminal KC2 connection output end C2.
The cathode of the first online battery group 201 and the second online battery group 201 is connected to a cathode bus bar
501 (i.e. the cathode bus bars 501 of direct current system or ups system rectifier 500), the cathode bus bar 501 and negative pole end G connect
It connects；Described output end C1, C2 are connected to a positive busbar 502, and (i.e. the anode of direct current system or ups system rectifier 500 is female
Row is 502).
The current-limiting charging circuit unit 6 is resistor.
In the following, being illustrated to the function for each circuit module that the utility model charging/discharging apparatus 100 is related to:
The working power circuit 4: it inputs the both ends that both ends are connected to the power supply that works online, for being entire charge and discharge
Equipment 100 provides working power.
First MCU control unit 3: using the system program directive of the first MCU control unit 3 as control model, to control
Make all coupled and relevant peripheral circuit or module.
The online switching device 1 of battery pack: being internally integrated (can support maximum there are two heavy-duty diode D1, D2
The electric current of 300A passes through) circuit is protected as online afterflow, when tested battery group 200 carries out on-line testing work shape
When state, heavy-duty diode D1, D2 are connected to battery group 200 and the DC distributor of power supply system for communications equipment (is not schemed
Show) between, guarantee that tested battery group 200 in safe presence, does not influence to power supply system for communications equipment always
Normal safe power supply；
It has been internally integrated equipotential link switch K1, K2, has completed the discharge test to tested battery group 200
Afterwards, it and is being automatically performed after line current-limiting charge, equipotential can carried out by equipotential link switch K1, K2 and connected safely
It connects, the battery group 200 being tested is restored to online normal operating conditions；
It is internally integrated inside switching switch KB, KC and equipotential link switch of 200 on-line testing of battery group
K1, K2, they are that the connection switching that the battery group 200 to work online is executed with output end is placed in " on-line testing " or " online
It is non-test " switch that executes of connection working condition (is tested when tested battery group 200 connects " on-line testing " end i.e. expression
Examination battery group 200 be in complete online charge-discharge test state；When the tested connection of battery group 200 " online non-test "
End indicates that tested battery group 200 is in equipotential on-line joining process state, and is not at complete online charge-discharge test work
State).Inside switching switch KB, KC and equipotential link switch K1, K2 of 200 on-line testing of battery group all have and first connect
Afterwards from function, " on-line testing " state or " online non-test " state can be thrown automatically into online battery group 200, and entire
Handoff procedure is in online power supply safety state.By default, internal switching switch KB, KC are disconnected, not any
One end switching；Equipotential link switch K1, K2 are normal closure state, at this time the first online battery group 201 and the second online storage
Battery pack 202 keeps equipotential on-line joining process state.
In specific works, when inside, switching switch KB, which is closed, is closed to switch terminal KB1, inside switching switch KC to switch terminal
KC1, equipotential link switch K1 are disconnected, and when equipotential link switch K2 is closed, the first online battery group 201 enters
Line test loop state, the second online battery group 202 keep equipotential on-line joining process state.Similarly, when inside switching switch
KB is closed to switch terminal KB2, and inside switching switch KC is closed to be disconnected to switch terminal KC2, equipotential link switch K2, and equipotential link is opened
When closing K1 closure, the second online battery group 202 enters on-line testing loop state, and the first online battery group 201 is protected
Hold equipotential on-line joining process state.Finally, when tested battery group 200 is completed, and after current-limiting charge, it is internal
Switching switch KB, KC are disconnected, without any one end switching；Equipotential link switch K1, K2 revert to normal closure state, are tested
The battery group 200 of examination is restored to the equipotential on-line joining process state of default.
The drive control circuit 2: the storage that selection works online is executed for the online switching device 1 of drive control battery pack
The switching of battery pack 200 is placed in " on-line testing " state or " online non-test " state, it is equipotential on-line joining process working condition
Key Controlling Circuit.
The high frequency DC/AC converter 5: turn three-phase alternating current inverse switch power circuit for a high-frequency direct-current, for completing
Conversion of the direct current to three-phase 380V or single-phase 220V alternating current；Tested battery group 200 is inputted as direct current, through every
After release DC/DC boosting inverter module 51 is converted, then three-phase 380V or single-phase 220V be transformed by 52 inversion of DC/AC conversion module
Output feeds back to power grid after alternating current.During exchange output feeds back to power grid, it is same to have network wave automatic real-time track
Output voltage and current capacity are walked, while not causing harmful clutter to pollute or interfere in existing power grid.It inputs and discharges in direct current
Has the function of the automatic protection of the high reliability such as constant-current discharge, overvoltage, overcurrent, short circuit in circuit；
The inner workings of high frequency DC/AC converter 5: DC voltage passes through Vin (180~600V), by isolated form
Then the Vm that DC/DC boosting inverter module 51 boosts to 750V or so is become as the input of DC/AC conversion module 52 by DC/AC
Vm is transformed into the voltage output Vo of three-phase 380V by mold changing block 52.
In the high frequency DC/AC converter 5,51 one side of DC/DC boosting inverter module plays battery pack and three
Phase alternating current air bound from effect, sufficiently ensured the safety of whole system；On the other hand DC/AC conversion module 52 is in turn simplified
Circuit design, the input of prime Width funtion is responsible for matching, rear class DC/AC conversion module 52 by DC/DC boosting inverter module 51
It is designed according to the standard that constant voltage inputs, to realize that Width funtion inputs, front stage isolation is reliable and stable excellent to set
Meter.
In the high frequency DC/AC converter 5, the second MCU control unit 53 controls benchmark 1 by PWM and adjusts direct current liter
The control benchmark for pressing voltage acquisition and feedback control circuit 54, to control the output of isolated form DC/DC boosting inverter module 51
Voltage；When the pulsewidth of PWM control benchmark 1 increases, the output voltage of isolated form DC/DC boosting inverter module 51 is increased, on the contrary
Then decline.When the output voltage of isolated form DC/DC boosting inverter module 51 reaches 750 ± 2V of predetermined value, PWM controls benchmark 1
It is then fixed, to realize the pressure stabilizing of voltage Vm.
In the high frequency DC/AC converter 5, the second MCU control unit 53 also controls benchmark 2 by PWM simultaneously and adjusts
The control benchmark of inverter power acquisition and feedback regulation control circuit 55, so that controlling DC/AC conversion module 52 is transformed into three for Vm
Phase 380V alternating voltage exports Vo；When the pulsewidth of PWM control benchmark 2 increases, the output power of DC/AC conversion module 52 adds
Greatly, on the contrary then output power reduces.
In the high frequency DC/AC converter 5, voltage input constant-current discharge control in battery group end is as follows: the 2nd MCU control
It is that 750V is constant that unit 53 processed, which controls 51 output voltage Vm of isolated form DC/DC boosting inverter module, converts mould by control DC/AC
The output power of block 52 realizes the constant-current discharge of battery group 200；When the first MCU control unit 3 passes through the control of master control serial communication
When system notifies the second MCU control unit 53 to battery group 200 with a certain constant current (for example, 50A) electric discharge, the 2nd MCU control
Single 53 yuan of system increase the discharge current of battery group 200 by increasing the output power of DC/AC conversion module 52, pass through reduction
The output power of DC/AC conversion module 52 reduces the discharge current of battery group 200, when the second MCU control unit 53 acquires
To battery group 200 discharge current be equal to the first MCU control unit 3 set by 50 ± 0.5A of electric current when, then stop adjusting,
To realize the constant-current discharge of battery group 200；A variety of control of discharge such as invariable power electric discharge, constant-resistance discharge similarly also may be implemented
Mode.
The current-limiting charging circuit unit 6: being internally integrated automatic current limiting charging circuit (i.e. resistor), current-limiting charge electricity
Stream is continuously adjustable, while having the function of the automatic protection of the high reliability such as overvoltage, overcurrent, short circuit, excess temperature.
The current/voltage data acquisition circuit 7: the charging and discharging currents of acquisition measurement battery group 200, battery group end
Voltage, system communication supply voltage (in line end voltage), voltage of battery cell etc..
The voltage and current Acquisition Circuit 8: battery group 200 tested online is detected for charging/discharging apparatus 100
On-Line Voltage, group end voltage, charging current and discharge current.
The telecommunication circuit 9: for the RS485 circuit of Phototube Coupling, external GPRS module or RS485 turn Ethernet mould
Block realizes telecommunication.
The data storage and human-computer interaction circuit 10: for the composition such as SD card circuit and several keys, LCD display.
In conclusion the utility model has the advantages that
1, the design and application of the utility model inversion feedback grid formula online battery group charging/discharging apparatus entirely meets and stores
Battery discharge characteristic, related communication power supply operation and maintenance norm standard and battery group maintenance test request, discharge examination exist entirely
Wire type and the energy-saving safe that discharges；
2, the design and application of the utility model inversion feedback grid formula online battery group charging/discharging apparatus entirely has and stores
Battery pack carries out energy-saving safe discharging function to practical alternating current three-phase 380V or single-phase 220V AC network load online, is suitable for
It now nets different communication equipment power supply backup batteries and carries out online constant-current discharge test；
3, it is concatenated by seamless link technology with tested battery group, guarantees tested battery group always
In safe presence, the normal safe power supply to communication system equipment is not influenced, realizes tested battery group to survey
The discharge parameter for trying equipment setting online discharges to practical alternating current three-phase 380V or single-phase 220V AC network load；
4, after completing discharge capacity test, by online rectifier or charger output power supply, pass through charge and discharge
Equipment, which automatically controls, carries out online current-limiting charge, and completes equipotential secure connection；
5, off-line test comparison is carried out using intelligent fictitious load with tradition, efficiently solves offline discharge operation, confession
Electricity and the online overall process maintenance test security hidden trouble of recovery, have energy saving, easy to operate and safe, online power supply safety, survey
Examination terminates the advantages that being charged online automatically and restore equipotential link；
6, compared with tradition using the DC/DC energy saving discharge test that boosts, efficiently solve system without actual loading nothing
Method carry out the battery pack work in discharge test or ups system backup mode and can not step-up discharge test the problem of, because
This, applicability and versatility are more powerful；
7, outputting and inputting for the utility model inversion feedback grid formula system is all to complete to be isolated by transformer, can
Ensure to output and input safe；
8, the utility model inversion feedback grid formula system, which has, carries out constant-current discharge, invariable power electric discharge etc. to battery group
Function；
9, the output of the utility model inversion feedback grid formula system has pressure stabilizing current limliting, pressure limiting current stabilization control protection function
Can, and output overcurrent, overvoltage protection and over-voltage shutdown defencive function, have the communication online discharge capacity of backup battery group
Detection and safe power supply protect feature；
10, the control system output of the first MCU unit of the utility model inversion feedback grid formula system, has criterion numeral
According to interface and RS485 interface, TCP/IP network is extended, GPRS/3G/4G interface is flexible and convenient to use.
Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (7)
1. a kind of inversion feedback grid formula battery group charging/discharging apparatus, the battery group includes one first online battery group
And one second online battery group；It is characterized by: the charging/discharging apparatus includes the online switching device of a battery pack, a drive
Dynamic control circuit, one first MCU control unit, a working power circuit, a high frequency DC/AC converter and current-limiting charge electricity
Road unit；
The first online battery group and the second online battery group are connect with the online switching device of the battery pack, and logical
Cross the online switching device of the battery pack gate the first online battery group or the second online battery group be connected to it is described
The both ends of working power circuit；
The online switching device of battery pack and the current-limiting charging circuit unit simultaneously connect；The high frequency DC/AC converter it is straight
Stream input terminal is connect with the online switching device of the battery pack, the three-phase alternating current output end and three of the high frequency DC/AC converter
The connection of phase electric main, the high frequency DC/AC converter also connect with the working power circuit and the first MCU control unit respectively
It connects；
First MCU control unit is connect with the working power circuit, and the online switching device of battery pack passes through described
Drive control circuit is connect with first MCU control unit, and the current-limiting charging circuit unit and the first MCU control are single
Member connection.
2. a kind of inversion feedback grid formula battery group charging/discharging apparatus as described in claim 1, it is characterised in that: further include
One current/voltage data acquisition circuit, a voltage and current Acquisition Circuit, a telecommunication circuit and data storage and people
Machine interacts circuit；The current/voltage data acquisition circuit, voltage and current Acquisition Circuit, telecommunication circuit and data
Storage is connected with the first MCU unit with human-computer interaction circuit.
3. a kind of inversion feedback grid formula battery group charging/discharging apparatus as described in claim 1, it is characterised in that: the height
Frequency DC/AC converter include an isolated form DC/DC boosting inverter module, a DC/AC conversion module, one second MCU control unit,
The acquisition of one direct current boost voltage and feedback control circuit and inverter power acquisition and feedback regulation control circuit；The battery
The online switching device of group is connected with the input terminal of the isolated form DC/DC boosting inverter module, the isolated form DC/DC boosting
The output end of conversion module is connected with the input terminal of the DC/AC conversion module, and the output end of the DC/AC conversion module connects
Connect three-phase alternating current alternating current；The DC boosting voltage acquisition and feedback control circuit boost with the isolated form DC/DC respectively to be become
Mold changing block and the second MCU control unit are connected；Inverter power acquisition and feedback regulation control circuit respectively with the DC/
AC conversion module and the second MCU control unit are connected.
4. a kind of inversion feedback grid formula battery group charging/discharging apparatus as described in claim 1, it is characterised in that: described to fill
Discharge equipment has a negative pole end G；
The online switching device of battery pack include the online afterflow of two equipotential link switch K1, K2 and two protect circuit D1,
D2, the online switching device of battery pack also have two input terminal B1, B2 and two output end C1, C2；
The equipotential link switch K1 with it is described line afterflow protection circuit D1 it is in parallel after be separately connected the input terminal B1 and
Output end C1；
The equipotential link switch K2 is separately connected the input terminal B2 and defeated after line afterflow protection circuit D2 connects with described
Outlet C2；
Described input terminal B1, B2 are separately connected the anode of the described first online battery group and the second online battery group；
The both ends of the working power circuit are separately connected the output end C1 and negative pole end G.
5. a kind of inversion feedback grid formula battery group charging/discharging apparatus as claimed in claim 4, it is characterised in that: the electricity
Also there are the online switching device of pond group two inside to switch switch KB, KC, it is described it is internal switch switch KB, KC respectively with the current limliting
The both ends of charging circuit unit simultaneously connect；
The internal switching switch KB is correspondingly arranged on two switch terminals KB1, KB2, and the internal switching switch KC is correspondingly arranged on
Two switch terminals KC1, KC2；
The switch terminal KB1 connection input terminal B1, the switch terminal KB2 connection input terminal B2；The switch terminal KC1
Connect the output end C1, the switch terminal KC2 connection output end C2.
6. a kind of inversion feedback grid formula battery group charging/discharging apparatus as claimed in claim 4, it is characterised in that: described the
The cathode of one online battery group and the second online battery group is connected to a cathode bus bar, and the cathode bus bar is born with described
Extreme G connection；Described output end C1, C2 are connected to a positive busbar.
7. a kind of inversion feedback grid formula battery group charging/discharging apparatus as described in claim 1, it is characterised in that: the limit
Current charge circuit unit is resistor.
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| CN109546717A (en) * | 2019-01-09 | 2019-03-29 | 福州福光电子有限公司 | A kind of inversion feedback grid formula battery group charging/discharging apparatus |
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