CN107154665A - A kind of discharge and recharge combiner and electric power system - Google Patents
A kind of discharge and recharge combiner and electric power system Download PDFInfo
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- CN107154665A CN107154665A CN201710596248.2A CN201710596248A CN107154665A CN 107154665 A CN107154665 A CN 107154665A CN 201710596248 A CN201710596248 A CN 201710596248A CN 107154665 A CN107154665 A CN 107154665A
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- 238000007599 discharging Methods 0.000 claims abstract description 80
- 238000012545 processing Methods 0.000 claims description 23
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000007689 inspection Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 230000003071 parasitic effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H02J7/0021—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of discharge and recharge combiner and electric power system, electric power system includes N number of battery pack, discharge and recharge combiner includes N number of charge-discharge modules for corresponding, being controlled for the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack of basis with battery pack, the battery pack that one end of each charge-discharge modules is corresponding is connected, and the other end of each charge-discharge modules is connected with dc bus.In the application, each battery pack is connected to dc bus by corresponding charge-discharge modules, charge-discharge modules can control the discharge and recharge of corresponding battery pack, without directly in parallel between each battery pack, no matter deposited between battery pack in the absence of pressure difference, situation about mutually being discharged between battery pack is not present, safety and reliability is high.In addition, the application also assures that each battery performance on the premise of stable so that each battery pack maximizes the use.
Description
Technical field
The present invention relates to battery charging and discharging technical field, more particularly to a kind of discharge and recharge combiner and electric power system.
Background technology
With developing rapidly for information technology and the fast development of data service, particularly 3G, 4G network, communication base station
Load number increases and diversity is presented, and the battery pack of first stage of construction configuration can not meet the demand of increased load,
In this case powered, it is necessary to increase with battery pack with the reliability for ensureing communication base station and electric power.But electricity also just occurs in this unavoidably
The problem of pond group has differences (such as cell voltage, internal resistance are different).In addition, battery pack is after direct parallel connection in the prior art
It is connected with dc bus, is load supplying by dc bus or is charged by dc bus, due to the discharge and recharge of battery pack
Voltage, resistance are different, when battery pack carries out discharge and recharge, it is possible that pressure difference and then causing between battery pack between battery pack
Mutually electric discharge, may burn out battery pack, safety and reliability is low.
Therefore, how to provide a kind of scheme for solving above-mentioned technical problem is that those skilled in the art need solution at present
Problem.
The content of the invention
, need not directly simultaneously between each battery pack it is an object of the invention to provide a kind of discharge and recharge combiner and electric power system
Connection, no matter deposited between battery pack in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, safety and reliability
It is high.In addition, the application can enter according to the difference of each battery pack come charging voltage and charging and discharging currents to each battery pack
Row is separately provided, and on the premise of ensureing that each battery performance is stable each battery pack is maximized the use.
In order to solve the above technical problems, the invention provides a kind of discharge and recharge combiner, applied to electric power system, the confession
Electric system includes N number of battery pack, and N is positive integer, and the discharge and recharge combiner includes the N number of and battery pack and corresponds, uses
In the charge and discharge being controlled according to the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack
Electric module, one end of each charge-discharge modules and the connection of corresponding battery pack, the other end of each charge-discharge modules with it is straight
Flow bus connection.
Preferably, the charge-discharge modules include：
Micro-control unit MCU and the discharge and recharge performing module being connected with the MCU, the MCU are used for according to default charge and discharge
Piezoelectric voltage and default charging and discharging currents are simultaneously carried out by the discharge and recharge performing module to the discharge and recharge of corresponding battery pack
Control.
Preferably, the discharge and recharge performing module includes the first PMOS and its drive circuit, the 2nd PMOS and its driving electricity
Road, the 3rd PMOS and its drive circuit, the 4th PMOS and its drive circuit, the 5th PMOS and its drive circuit, the 6th PMOS and
Its drive circuit, NMOS and its drive circuit, the 8th PMOS and its drive circuit, inductance, electric capacity of voltage regulation and diode, and each
Metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, and described first
PMOS drain electrode is connected with the drain electrode of the 8th PMOS, the positive pole of the source electrode of the 8th PMOS respectively with the dc bus
The source electrode connection of line, the anode of the electric capacity of voltage regulation and the 6th PMOS, the drain electrode and the described 5th of the 6th PMOS
PMOS drain electrode connection, the source electrode of the 5th PMOS connects with the drain electrode of the 2nd PMOS and the first end of the inductance respectively
Connect, the drain electrode of the second end of the inductance respectively with the source electrode, the source electrode, the NMOS of the 4th PMOS of the first PMOS
And the negative electrode of the diode is connected, the drain electrode of the 4th PMOS is connected with the drain electrode of the 3rd PMOS, the described 3rd
PMOS source electrode is connected with the source electrode of the 2nd PMOS and the positive pole of corresponding battery pack respectively, the source electrode difference of the NMOS
The negative terminal of anode, the negative pole of the battery pack, the negative busbar of the dc bus and the electric capacity of voltage regulation with the diode
Connection.
Preferably, the discharge and recharge performing module includes the first NMOS and its drive circuit, the 2nd NMOS and its driving electricity
Road, the 3rd NMOS and its drive circuit, the 4th NMOS and its drive circuit, the 5th NMOS and its drive circuit, the 6th NMOS and
Its drive circuit, PMOS and its drive circuit, the 8th NMOS and its drive circuit, inductance, electric capacity of voltage regulation and diode, and each
Metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, and described first
NMOS source electrode is connected with the negative pole of corresponding battery pack and the source electrode of the 3rd NMOS respectively, the drain electrode of the first NMOS
Respectively with the first end of the inductance and the described 8th
NMOS source electrode connection, the drain electrode of the 8th NMOS is connected with the drain electrode of the 2nd NMOS, and described second
NMOS source electrode connects with the negative busbar of the source electrode, the negative terminal of the electric capacity of voltage regulation and the dc bus of the 6th NMOS respectively
Connect, the drain electrode of the 3rd NMOS is connected with the drain electrode of the 4th NMOS, the source electrode of the 4th NMOS respectively with the electricity
The anode connection for the second end, the source electrode of the 5th NMOS, the source electrode of the PMOS and the diode felt, the described 5th
NMOS drain electrode is connected with the drain electrode of the 6th NMOS, the positive pole drained respectively with corresponding battery pack of the PMOS, institute
State the positive bus-bar connection of the negative electrode, the anode of the electric capacity of voltage regulation and the dc bus of diode.
Preferably, the discharge and recharge combiner also includes charge-discharge modules controller, the charge-discharge modules controller bag
Include：
Processing module and the parameter setting module being connected respectively with the processing module and communication module, the parameter setting
Module is used to carry out the default charging/discharging voltage of battery pack each described and default charging and discharging currents by the processing module
Set or change, the processing module is used for the default charging/discharging voltage after being reset by the communication module and pre-
If charging and discharging currents are sent to corresponding MCU.
Preferably, the parameter setting module is additionally operable to be configured the type of each battery pack；
The MCU is additionally operable in battery power discharge, and battery is controlled according to the type of each battery pack and pre-set priority
The discharge order of group.
Preferably, the charge-discharge modules controller also includes：
The display module being connected with the processing module, for showing the default discharge and recharge that the parameter setting module is set
Voltage and default charging and discharging currents.
Preferably, the charge-discharge modules also include：
The battery voltage of voltage for detecting battery pack corresponding with the charge-discharge modules detects circuit；
For the current detection circuit for the charging and discharging currents for detecting battery pack corresponding with the charge-discharge modules；
For the direct current bus voltage detecting circuit for the voltage for detecting the dc bus；
The MCU is also connected and DC bus-bar voltage inspection with the voltage detecting circuit, current detection circuit respectively
Slowdown monitoring circuit is connected, for by the voltage of the voltage of the battery pack, the charging and discharging currents of the battery pack and the dc bus
Send to the processing module；
The display module, which is additionally operable to receive the voltage of the battery pack, the battery pack by the processing module, to be filled
The voltage of discharge current and the dc bus and display.
Preferably, the current detection circuit includes：
Be arranged on battery pack corresponding with the charge-discharge modules negative side, for detect the first charging and discharging currents the
One inspection leakage resistance；
Input is connected with the described first inspection leakage resistance, the first current detection circuit that output end is connected with the MCU；
It is arranged on the second inspection leakage resistance with the dc bus negative busbar side, for detecting the second charging and discharging currents；
Input is connected with the described second inspection leakage resistance, the second current detection circuit that output end is connected with the MCU；
The MCU is used to send first charging and discharging currents and second charging and discharging currents to the processing mould
Block, so that the display module is shown to first charging and discharging currents and second charging and discharging currents.
In order to solve the above technical problems, present invention also offers a kind of electric power system, including N number of battery pack, N is just whole
Number, in addition to the discharge and recharge combiner described in item as described above.
The invention provides a kind of discharge and recharge combiner, applied to electric power system, electric power system includes N number of battery pack, and N is
Positive integer, discharge and recharge combiner includes N number of corresponded with battery pack, for according to default charging/discharging voltage and default discharge and recharge
The charge-discharge modules that discharge and recharge of the electric current to corresponding battery pack is controlled, one end of each charge-discharge modules is right with it
The battery pack connection answered, the other end of each charge-discharge modules is connected with dc bus.
It can be seen that, in the application, each battery pack is connected to dc bus, discharge and recharge by corresponding charge-discharge modules
Module can control the discharge and recharge of corresponding battery pack, without directly in parallel between each battery pack, no matter battery pack it
Between deposit in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, safety and reliability is high.In addition, the application
It can be separately provided, protected come charging voltage and charging and discharging currents to each battery pack according to the difference of each battery pack
Demonstrate,prove on the premise of each battery performance is stablized so that each battery pack maximizes the use.
A kind of electric power system that the application is provided has same beneficial effect.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to institute in prior art and embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
A kind of structural representation for discharge and recharge combiner that Fig. 1 provides for the present invention；
A kind of structural representation for discharge and recharge performing module that Fig. 2 provides for the present invention；
The structural representation for another discharge and recharge performing module that Fig. 3 provides for the present invention.
Embodiment
The core of the present invention is to provide between a kind of discharge and recharge combiner and electric power system, each battery pack without directly simultaneously
Connection, no matter deposited between battery pack in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, safety and reliability
It is high.In addition, the application can enter according to the difference of each battery pack come charging voltage and charging and discharging currents to each battery pack
Row is separately provided, and on the premise of ensureing that each battery performance is stable each battery pack is maximized the use.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
It refer to Fig. 1, a kind of structural representation for discharge and recharge combiner that Fig. 1 provides for the present invention, the discharge and recharge combining
Device is applied to electric power system, and electric power system includes N number of battery pack, and N is positive integer, and discharge and recharge combiner includes N number of and battery pack
Correspond, carried out for the discharge and recharge according to default charging/discharging voltage and default charging and discharging currents to corresponding battery pack
The charge-discharge modules 1 of control, one end of each charge-discharge modules 1 and corresponding battery pack connection, each charge-discharge modules 1
The other end be connected with dc bus.
Specifically, the application is provided with a charge-discharge modules 1, discharge and recharge between each battery pack and dc bus
Module 1 can be considered two-port network, and one end is directly hung on dc bus by wire, and the other end is connected to battery pack by wire
Both positive and negative polarity on, charge-discharge modules 1 are used for being controlled the discharge and recharge of battery pack.Here charge and discharge control includes discharge and recharge
Whether carry out and when carrying out discharge and recharge, the size of the voltage and current of discharge and recharge.
So, first do not need each battery pack be connected in parallel as in the prior art, also just avoid indirectly by
There is pressure difference between battery pack in parallel and occur circulation the occurrence of.In addition, in face of different types of battery pack it
Between or same kind battery pack use time it is different and when causing the difference between battery pack, the application can also pass through discharge and recharge
Module 1 is independently arranged to the charging and discharging currents and charging/discharging voltage of corresponding battery pack, is ensureing each battery pack
On the premise of performance is stable each battery pack is maximized the use, improve the efficiency of electric power system.
The invention provides a kind of discharge and recharge combiner, applied to electric power system, electric power system includes N number of battery pack, and N is
Positive integer, discharge and recharge combiner includes N number of corresponded with battery pack, for according to default charging/discharging voltage and default discharge and recharge
The charge-discharge modules that discharge and recharge of the electric current to corresponding battery pack is controlled, one end of each charge-discharge modules is right with it
The battery pack connection answered, the other end of each charge-discharge modules is connected with dc bus.
It can be seen that, in the application, each battery pack is connected to dc bus, discharge and recharge by corresponding charge-discharge modules
Module can control the discharge and recharge of corresponding battery pack, without directly in parallel between each battery pack, no matter battery pack it
Between deposit in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, safety and reliability is high.In addition, the application
It can be separately provided, protected come charging voltage and charging and discharging currents to each battery pack according to the difference of each battery pack
Demonstrate,prove on the premise of each battery performance is stablized so that each battery pack maximizes the use.
On the basis of a upper embodiment：
As a kind of preferred embodiment, charge-discharge modules 1 include：
Micro-control unit MCU and the discharge and recharge performing module being connected with MCU, MCU be used for according to default charging/discharging voltage and
Default charging and discharging currents are simultaneously controlled by discharge and recharge performing module to the discharge and recharge of corresponding battery pack.
Specifically, the default charging/discharging voltage and default charging and discharging currents of the battery pack are provided with MCU, here default
It is that charging/discharging voltage and default charging and discharging currents are set when can be and dispatch from the factory or reset according to actual needs after dispatching from the factory
, the application is not particularly limited herein, is determined according to actual conditions.
As a kind of preferred embodiment, discharge and recharge performing module includes the first PMOS Q11 and its drive circuit, second
PMOS Q12 and its drive circuit, the 3rd PMOS Q13 and its drive circuit, the 4th PMOS Q14 and its drive circuit, the 5th
PMOS Q15 and its drive circuit, the 6th PMOS Q16 and its drive circuit, NMOS Q17 and its drive circuit, the 8th PMOS
Q18 and its drive circuit, inductance L, electric capacity of voltage regulation C and diode D17, and each metal-oxide-semiconductor includes parasitic diode, wherein：
MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, the first PMOS Q11
Drain electrode be connected with the 8th PMOS drain electrode, the 8th PMOS source electrode positive bus-bar respectively with dc bus, electric capacity of voltage regulation C are just
End and the 6th PMOS Q16 source electrode connection, the 6th PMOS Q16 drain electrode are connected with the 5th PMOS Q15 drain electrode, and the 5th
PMOS Q15 source electrode is connected with the 2nd PMOS Q12 drain electrode and inductance L first end respectively, inductance L the second end respectively with
First PMOS Q11 source electrode, the drain electrode of the 4th PMOS Q14 source electrode, NMOS and diode D17 negative electrode connection, the 4th
PMOS Q14 drain electrode is connected with the 3rd PMOS Q13 drain electrode, and the 3rd PMOS Q13 source electrode is respectively with the 2nd PMOS Q12's
Source electrode and the connection of the positive pole of corresponding battery pack, it is NMOS source electrode anode respectively with diode D17, the negative pole of battery pack, straight
Flow the negative busbar of bus and electric capacity of voltage regulation C negative terminal connection.
It refer to Fig. 2, a kind of structural representation for discharge and recharge performing module that Fig. 2 provides for the present invention.
Specifically, discharge and recharge performing module includes buck topological structures, the battery pack pair that dc bus charges to battery pack
The buck＆boost topological structures of dc bus electric discharge, MCU realizes dc bus to battery pack by controlling corresponding metal-oxide-semiconductor
The control of charging and discharging currents and voltage during charging or when battery pack is discharged dc bus.
Specifically, dc bus is to the battery pack charging stage, and charge-discharge modules 1 use buck buck topology structures：NMOS
Q17, the 3rd PMOS Q13, the 4th PMOS Q14, the 5th PMOS Q15, the 6th PMOS Q16 are off state, the 2nd PMOS
Q12 is in the conduction state, and MCU output pwm signals control the first PMOS Q11 and the 8th PMOS Q18 break-make.First PMOS
Q11 and the 8th PMOS Q18 simultaneously turn on the stage, and electric current is by the PMOS of PMOS Q18-the first of dc bus-the 8th Q11-electricity
Feel the PMOS Q12 of L-the 2nd-battery packs-first and examine the inspection leakage resistance-dc bus of leakage resistance-second, inductance L storage energy
Amount；First PMOS Q11 and the 8th PMOS Q18 simultaneously turn off the stage, and electric current is by the PMOS Q12-battery packs-of inductance L-the 2nd
First examines leakage resistance-diode D17-inductance L, and inductance L releases energy.
Battery pack is by charge-discharge modules 1 to dc bus discharge regime, and charge-discharge modules 1 are electric discharge boost topology knots
Structure, battery voltage highest charge-discharge modules 1 are output as constant pressure output, the corresponding discharge and recharge of other battery packs to dc bus
Module 1 is constant current output.
When multiple battery packs (N is not less than 2) are discharged dc bus, charge-discharge modules 1 employ boost Boost topology knots
Structure：3rd PMOS Q13, the 4th PMOS Q14, the 5th PMOS Q15, the 6th PMOS Q16 are off state, the 2nd PMOS
Q12 is in the conduction state, MCU output pwm signals control NMOS tube Q17, the first PMOS Q11 and the 8th PMOS Q18 break-make.
First PMOS Q11 and the 8th PMOS Q18 are off state simultaneously, and NMOS tube Q17 is in the conduction state, and electric current is by battery
The PMOS of group-the 2nd Q12-inductance L-inspection leakage resistance-battery packs of NMOS tube Q17-first, inductance L storage energy；First
PMOS Q11 and the 8th PMOS Q18 are simultaneously in the conduction state, and NMOS tube Q17 is off state, and electric current is by battery pack-the
Two PMOS Q12-inspection leakage resistance-first of the PMOS Q18 of PMOS Q11-the 8th of inductance L-the first-dc bus-second is examined
Leakage resistance-battery pack, inductance L releases energy.
Single battery group is to dc bus discharge regime, and charge-discharge modules 1 employ buck buck topology structures：NMOS tube
Q17, the first PMOS Q11, the 8th PMOS Q18, the 2nd PMOS Q12 are off state, the 5th PMOS Q15, the 6th PMOS
Q16 is in the conduction state, and MCU output pwm signals control the 3rd PMOS Q13, the 4th PMOS Q14 break-make.3rd PMOS
Q13, the 4th PMOS Q14 are in the conduction state, and electric current is by the PMOS of PMOS Q13-the 4th of battery pack-the 3rd Q14-inductance
The inspection inspection leakage resistance-battery pack of leakage resistance-first of the PMOS Q16 of PMOS Q15-the 6th of L-the 5th-dc bus-second,
Inductance L stores energy；3rd PMOS Q13, the 4th PMOS Q14 are off state, and electric current is by the PMOS of inductance L-the 5th
The PMOS Q16 of Q15-the 6th-dc bus-second examines leakage resistance-diode D17-inductance L, and inductance L releases energy.
MCU can be realized by controlling the turn-on and turn-off of corresponding metal-oxide-semiconductor to realize discharge and recharge of the battery pack to dc bus
Seamless switching of the battery pack to the discharge and recharge of dc bus；Also realized by controlling the dutycycle of pwm signal to discharge and recharge electricity
The control of the size of stream.
As a kind of preferred embodiment, discharge and recharge performing module includes the first NMOS Q21 and its drive circuit, second
NMOS Q22 and its drive circuit, the 3rd NMOS Q23 and its drive circuit, the 4th NMOS Q24 and its drive circuit, the 5th
NMOS Q25 and its drive circuit, the 6th NMOS Q26 and its drive circuit, PMOS Q27 and its drive circuit, the 8th NMOS
Q28 and its drive circuit, inductance L, electric capacity of voltage regulation C and diode D27, and each metal-oxide-semiconductor includes parasitic diode, wherein：
MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, the first NMOS Q21
Source electrode connected respectively with the negative pole of corresponding battery pack and the 3rd NMOS Q23 source electrode, the first NMOS Q21 drain electrode difference
It is connected with inductance L first end and the 8th NMOS Q28 source electrode, the 8th NMOS Q28 drain electrode and the 2nd NMOS Q22 leakage
Pole is connected, the 2nd NMOS Q22 source electrode respectively with the 6th NMOS Q26 source electrode, electric capacity of voltage regulation C negative terminal and dc bus
Negative busbar is connected, and the 3rd NMOS Q23 drain electrode is connected with the 4th NMOS Q24 drain electrode, the 4th NMOS Q24 source electrode difference
It is connected with inductance L the second end, the 5th NMOS Q25 source electrode, PMOS source electrode and diode D27 anode, the 5th NMOS
Q25 drain electrode is connected with the 6th NMOS Q26 drain electrode, the PMOS Q27 positive pole drained respectively with corresponding battery pack, two poles
The positive bus-bar connection of pipe D27 negative electrode, the anode of voltage-stabilized power supply and dc bus.
It refer to Fig. 3, the structural representation for another discharge and recharge performing module that Fig. 3 provides for the present invention.
Discharge and recharge performing module in the operation principle and above-described embodiment of discharge and recharge performing module in the present embodiment
Operation principle is identical, and simply one is that discharge and recharge performing module is arranged on the electrode line between battery and dc bus, and one
It is individual that discharge and recharge performing module is arranged in the negative line between battery and dc bus, have with such as above-mentioned embodiment identical
Beneficial effect.
As a kind of preferred embodiment, discharge and recharge combiner also includes charge-discharge modules controller, charge-discharge modules control
Device processed includes：
Processing module and the parameter setting module being connected respectively with processing module and communication module, parameter setting module are used for
The default charging/discharging voltage and default charging and discharging currents of each battery pack are configured or changed by processing module, is handled
Module is used for the default charging/discharging voltage after being reset by communication module and default charging and discharging currents are sent to corresponding
MCU。
Under normal circumstances, an initial default charging/discharging voltage can be built-in with the MCU of charge-discharge modules 1 and is preset and is filled
Discharge current, but in actual applications, with the change of the use time increasingly longer or external working environment of battery pack, its
Performance can also change, in order that obtaining battery pack is at optimal working condition, the discharge and recharge combiner that the application is provided
Also include charge-discharge modules controller, user by its according to actual needs to the default charging/discharging voltages of charge-discharge modules 1 and
Default charging and discharging currents are configured or changed.
In addition, communication module here can be RS485 communication modules, other kinds of communication module can be also thought,
The present invention is not particularly limited herein, is determined according to actual conditions.
In addition, parameter setting module here can be key control circuit, user can continue to preset by button
The setting of charging/discharging voltage and default charging and discharging currents.Certainly, parameter setting module here can also be other kinds of ginseng
Number setup module, such as touch-screen, the present invention is not particularly limited herein.
As a kind of preferred embodiment, parameter setting module is additionally operable to be configured the type of each battery pack；
MCU is additionally operable in battery power discharge, and battery pack is controlled according to the type of each battery pack and pre-set priority
Discharge order.
Specifically, it is contemplated that different types of battery pack, its charge-discharge performance is also different, when in face of N number of battery pack
During including polytype battery pack, be it is maximized utilize each battery pack, the charge-discharge modules controller in the application is also
Function is set with battery pack priority, such as when battery pack includes lead-acid battery group and lithium battery group, in order to play lithium electricity
The advantage of pond group good cycle, can be lithium battery-lead-acid battery by pre-set priority here, MCU is receiving parameter
After the type for the battery pack that setup module is set, lithium battery preferential discharge can be controlled according to pre-set priority.
As a kind of preferred embodiment, charge-discharge modules controller also includes：
The display module being connected with processing module, the default charging/discharging voltage set for display parameters setup module and pre-
If charging and discharging currents.
The default charging/discharging voltage and default charging and discharging currents of oneself current setting can be intuitively seen for the convenience of the user,
Here charge-discharge modules controller also includes display module, the default charging/discharging voltage set for display parameters setup module
With default charging and discharging currents, Consumer's Experience is improved.
In addition, display module here can be LED display module, or LCDs, the present invention is herein not
It is particularly limited, is determined according to actual conditions.
As a kind of preferred embodiment, charge-discharge modules 1 also include：
For detecting circuit is detected with the battery voltage of the voltage of the corresponding battery pack of charge-discharge modules 1；
For detecting the current detection circuit with the charging and discharging currents of the corresponding battery pack of charge-discharge modules 1；
For the direct current bus voltage detecting circuit for the voltage for detecting dc bus；
MCU is also connected and direct current bus voltage detecting circuit connection with voltage detecting circuit, current detection circuit respectively, is used
Sent in by the voltage of the voltage of battery pack, the charging and discharging currents of battery pack and dc bus to processing module；
Display module is additionally operable to receive voltage, the charging and discharging currents of battery pack and the direct current mother of battery pack by processing module
The voltage of line and display.
Specifically, charge-discharge modules 1 are also adopted to the voltage of the voltage, charging and discharging currents and dc bus of battery pack
Collection, and shown on display module, so that user understands the charging/discharging voltage and electric current of battery pack in time, it is conveniently adjusted pre-
If charging/discharging voltage and default charging and discharging currents.
Charge-discharge modules 1 also include LED display module, electricity for showing battery pack etc..
As a kind of preferred embodiment, current detection circuit includes：
Be arranged on the negative side of the corresponding battery pack of charge-discharge modules 1, for detect the first charging and discharging currents first
Examine leakage resistance；
Input is connected with the first inspection leakage resistance, the first current detection circuit of output end and MCU connections；
It is arranged on the second inspection leakage resistance with dc bus negative busbar side, for detecting the second charging and discharging currents；
Input is connected with the second inspection leakage resistance, the second current detection circuit of output end and MCU connections；
MCU is used to send the first charging and discharging currents and the second charging and discharging currents to processing module, so as to display module pair
First charging and discharging currents and the second charging and discharging currents are shown.
Specifically, the collection to electric current is realized using inspection leakage resistance in the application, cost is low and small volume.
In order to solve the above technical problems, present invention also offers a kind of electric power system, including N number of battery pack, N is just whole
Number, in addition to the discharge and recharge combiner of item as described above.
The introduction of the electric power system provided for the present invention refer to above-described embodiment, and the present invention will not be repeated here.
It should be noted that in this manual, such as first and second or the like relational terms are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of discharge and recharge combiner, applied to electric power system, the electric power system includes N number of battery pack, and N is positive integer, its
Be characterised by, the discharge and recharge combiner include it is N number of correspond with the battery pack, for according to default charging/discharging voltage and
The charge-discharge modules that default discharge and recharge of the charging and discharging currents to corresponding battery pack is controlled, each charge-discharge modules
One end and corresponding battery pack connection, the other end of each charge-discharge modules are connected with dc bus.
2. discharge and recharge combiner as claimed in claim 1, it is characterised in that the charge-discharge modules include：
Micro-control unit MCU and the discharge and recharge performing module being connected with the MCU, the MCU are used for according to default discharge and recharge electricity
Pressure and default charging and discharging currents and the discharge and recharge by the discharge and recharge performing module to corresponding battery pack are controlled.
3. discharge and recharge combiner as claimed in claim 2, it is characterised in that the discharge and recharge performing module includes the first PMOS
And its drive circuit, the 2nd PMOS and its drive circuit, the 3rd PMOS and its drive circuit, the 4th PMOS and its drive circuit,
5th PMOS and its drive circuit, the 6th PMOS and its drive circuit, NMOS and its drive circuit, the 8th PMOS and its driving electricity
Road, inductance, electric capacity of voltage regulation and diode, and each metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, the first PMOS
Drain electrode be connected with the drain electrode of the 8th PMOS, the source electrode of the 8th PMOS positive bus-bar respectively with the dc bus,
The anode of the electric capacity of voltage regulation and the 6th PMOS source electrode connection, the drain electrode of the 6th PMOS is with the 5th PMOS's
Drain electrode connection, the source electrode of the 5th PMOS is connected with the drain electrode of the 2nd PMOS and the first end of the inductance respectively, institute
State the second end of inductance source electrode respectively with the first PMOS, source electrode, the drain electrode of the NMOS and the institute of the 4th PMOS
The negative electrode connection of diode is stated, the drain electrode of the 4th PMOS is connected with the drain electrode of the 3rd PMOS, the 3rd PMOS's
Source electrode is connected with the source electrode of the 2nd PMOS and the positive pole of corresponding battery pack respectively, the source electrode of the NMOS respectively with it is described
The anode of diode, the negative pole of the battery pack, the negative terminal connection of the negative busbar of the dc bus and the electric capacity of voltage regulation.
4. discharge and recharge combiner as claimed in claim 2, it is characterised in that the discharge and recharge performing module includes the first NMOS
And its drive circuit, the 2nd NMOS and its drive circuit, the 3rd NMOS and its drive circuit, the 4th NMOS and its drive circuit,
5th NMOS and its drive circuit, the 6th NMOS and its drive circuit, PMOS and its drive circuit, the 8th NMOS and its driving electricity
Road, inductance, electric capacity of voltage regulation and diode, and each metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is connected by the drive circuit correspondence of each metal-oxide-semiconductor with the grid of each metal-oxide-semiconductor respectively, the first NMOS
Source electrode connected respectively with the negative pole of corresponding battery pack and the 3rd NMOS source electrode, the drain electrode difference of the first NMOS
It is connected with the first end of the inductance and the source electrode of the 8th NMOS, the drain electrode of the 8th NMOS is with the 2nd NMOS's
Drain electrode connection, the source electrode of the 2nd NMOS respectively with the source electrode of the 6th NMOS, the negative terminal of the electric capacity of voltage regulation and described
The negative busbar connection of dc bus, the drain electrode of the 3rd NMOS is connected with the drain electrode of the 4th NMOS, the 4th NMOS
Source electrode the second end respectively with the inductance, the source electrode of the 5th NMOS, the source electrode of the PMOS and the diode
Anode is connected, and the drain electrode of the 5th NMOS is connected with the drain electrode of the 6th NMOS, the drain electrode of the PMOS respectively with it is corresponding
The positive pole of battery pack, the negative electrode of the diode, the positive bus-bar connection of the anode of the electric capacity of voltage regulation and the dc bus.
5. the discharge and recharge combiner as described in claim 3 or 4, it is characterised in that the discharge and recharge combiner also includes charge and discharge
Electric module controller, the charge-discharge modules controller includes：
Processing module and the parameter setting module being connected respectively with the processing module and communication module, the parameter setting module
For being configured by the processing module to the default charging/discharging voltage and default charging and discharging currents of battery pack each described
Or change, the processing module is used to the default charging/discharging voltage after resetting by the communication module and preset fill
Discharge current is sent to corresponding MCU.
6. discharge and recharge combiner as claimed in claim 5, it is characterised in that the parameter setting module is additionally operable to each electricity
The type of pond group is configured；
The MCU is additionally operable in battery power discharge, and battery pack is controlled according to the type of each battery pack and pre-set priority
Discharge order.
7. discharge and recharge combiner as claimed in claim 5, it is characterised in that the charge-discharge modules controller also includes：
The display module being connected with the processing module, for showing the default charging/discharging voltage that the parameter setting module is set
With default charging and discharging currents.
8. discharge and recharge combiner as claimed in claim 7, it is characterised in that the charge-discharge modules also include：
The battery voltage of voltage for detecting battery pack corresponding with the charge-discharge modules detects circuit；
For the current detection circuit for the charging and discharging currents for detecting battery pack corresponding with the charge-discharge modules；
For the direct current bus voltage detecting circuit for the voltage for detecting the dc bus；
The MCU is also connected and DC bus-bar voltage detection electricity with the voltage detecting circuit, current detection circuit respectively
Road is connected, for the voltage of the voltage of the battery pack, the charging and discharging currents of the battery pack and the dc bus to be sent
To the processing module；
The display module be additionally operable to by the processing module receive the voltage of the battery pack, the battery pack discharge and recharge
The voltage of electric current and the dc bus and display.
9. discharge and recharge combiner as claimed in claim 8, it is characterised in that the current detection circuit includes：
It is arranged on the negative side of battery pack corresponding with the charge-discharge modules, the first inspection for detecting the first charging and discharging currents
Leakage resistance；
Input is connected with the described first inspection leakage resistance, the first current detection circuit that output end is connected with the MCU；
It is arranged on the second inspection leakage resistance with the dc bus negative busbar side, for detecting the second charging and discharging currents；
Input is connected with the described second inspection leakage resistance, the second current detection circuit that output end is connected with the MCU；
The MCU is used to send first charging and discharging currents and second charging and discharging currents to the processing module, with
Toilet states display module and first charging and discharging currents and second charging and discharging currents is shown.
10. a kind of electric power system, including N number of battery pack, N is positive integer, it is characterised in that also appointed including such as claim 1-9
Discharge and recharge combiner described in one.
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| CN201710596248.2A CN107154665B (en) | 2017-07-20 | 2017-07-20 | Charging and discharging combiner and power supply system |
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| CN201710596248.2A CN107154665B (en) | 2017-07-20 | 2017-07-20 | Charging and discharging combiner and power supply system |
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