CN207021734U - 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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- CN207021734U CN207021734U CN201720888264.4U CN201720888264U CN207021734U CN 207021734 U CN207021734 U CN 207021734U CN 201720888264 U CN201720888264 U CN 201720888264U CN 207021734 U CN207021734 U CN 207021734U
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Abstract
The utility model 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 with battery pack, being controlled for the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack of basis, 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
Battery charging and discharging technical field is the utility model is related to, is more particularly to a kind of discharge and recharge combiner and power supply
System.
Background technology
With the rapid development of 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 needs of increased load,
In this case, it is necessary to increase with battery pack to ensure that the reliability of communication base station and electric power is powered.But electricity also just occurs in this unavoidably
Pond group has differences the problem of (such as cell voltage, internal resistance difference).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 to solve at present
Problem.
Utility model content
The purpose of this utility model is to provide a kind of discharge and recharge combiner and electric power system, need not be straight between each battery pack
Parallel connection is connect, no matter deposited between battery pack in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, security and can
By property height.In addition, the application can be according to the difference of each battery pack come the charging voltage to each battery pack and discharge and recharge electricity
Stream is separately provided, and causes each battery pack to obtain maximized profit on the premise of ensureing that each battery performance is stable
With.
In order to solve the above technical problems, the utility model provides a kind of discharge and recharge combiner, applied to electric power system, institute
Stating electric power system includes N number of battery pack, and N is positive integer, and the discharge and recharge combiner includes N number of a pair with the battery pack 1
Should, it be controlled for the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack of basis
Charge-discharge modules, one end of each charge-discharge modules connect with corresponding battery pack, the other end of each charge-discharge modules
It is connected with dc bus.
Preferably, the charge-discharge modules include：
Micro-control unit MCU and the discharge and recharge execution 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 discharge and recharge of the discharge and recharge execution module to corresponding battery pack
Control.
Preferably, the discharge and recharge execution 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 it is each
Metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is corresponded to by the drive circuit of each metal-oxide-semiconductor be connected 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 source electrode of the 8th PMOS positive pole with the dc bus respectively
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 connect with the drain electrode of the 2nd PMOS and the first end of the inductance respectively
Connect, the second end of the inductance respectively the source electrode with the first PMOS, the 4th PMOS source electrode, the NMOS drain electrode
And the negative electrode connection of the diode, the drain electrode of the 4th PMOS are connected with the drain electrode of the 3rd PMOS, the described 3rd
PMOS source electrode connects 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 the negative pole of anode, 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 execution 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 it is each
Metal-oxide-semiconductor includes parasitic diode, wherein：
The MCU is corresponded to by the drive circuit of each metal-oxide-semiconductor be connected with the grid of each metal-oxide-semiconductor respectively, and described first
NMOS source electrode connects with the negative pole of corresponding battery pack and the source electrode of the 3rd NMOS respectively, the drain electrode of the first NMOS
It is connected respectively with the first end of the inductance and the source electrode of the 8th NMOS, the drain electrode and described second of the 8th NMOS
NMOS drain electrode connection, the negative terminal of the source electrode of the 2nd NMOS source electrode with the 6th NMOS, the electric capacity of voltage regulation respectively
And the negative busbar connection of the dc bus, the drain electrode of the 3rd NMOS is connected with the drain electrode of the 4th NMOS, and described the
Four NMOS source electrode the second end with the inductance, the source electrode of the 5th NMOS, the source electrode and described two of the PMOS respectively
The anode connection of pole pipe, the drain electrode of the 5th NMOS are connected with the drain electrode of the 6th NMOS, the drain electrode difference of the PMOS
The positive pole of the negative electrode of positive pole, the diode, the anode of the electric capacity of voltage regulation and the dc bus with corresponding battery pack
Line connects.
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 each battery pack and default charging and discharging currents by the processing module
Set or change, the processing module is for the default charging/discharging voltage after being reset by the communication module and in advance
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, the default discharge and recharge set for showing the parameter setting module
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 respectively with the voltage detecting circuit, current detection circuit and the DC bus-bar voltage is examined
Slowdown monitoring circuit connects, 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 is additionally operable to receive the voltage of the battery pack by the processing module, the battery pack is 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, the utility model additionally provides a kind of electric power system, including N number of battery pack, N is just
Integer, in addition to the discharge and recharge combiner described in item as described above.
The utility model provides a kind of discharge and recharge combiner, and applied to electric power system, electric power system includes N number of battery
Group, N are positive integer, and discharge and recharge combiner is corresponded with battery pack including N number of, charging/discharging voltage is preset for basis and preset
The charge-discharge modules that discharge and recharge of the charging and discharging currents to corresponding battery pack is controlled, one end of each charge-discharge modules
Corresponding battery pack connection, the other end of each charge-discharge modules are 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, it is high in the absence of situation about mutually being discharged between battery pack, safety and reliability.In addition, the application
It can be separately provided, protected come the charging voltage to each battery pack and charging and discharging currents 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 provides has same beneficial effect.
Brief description of the drawings
, below will be to prior art and embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of discharge and recharge combiner provided by the utility model；
Fig. 2 is a kind of structural representation of discharge and recharge execution module provided by the utility model；
Fig. 3 is the structural representation of another discharge and recharge execution module provided by the utility model.
Embodiment
Core of the present utility model is to provide a kind of discharge and recharge combiner and electric power system, need not be straight between each battery pack
Parallel connection is connect, no matter deposited between battery pack in the absence of pressure difference, in the absence of situation about mutually being discharged between battery pack, security and can
By property height.In addition, the application can be according to the difference of each battery pack come the charging voltage to each battery pack and discharge and recharge electricity
Stream is separately provided, and causes each battery pack to obtain maximized profit on the premise of ensureing that each battery performance is stable
With.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
It refer to Fig. 1, Fig. 1 is a kind of structural representation of discharge and recharge combiner provided by the utility model, the discharge and recharge
Combiner is applied to electric power system, and electric power system includes N number of battery pack, and N is positive integer, discharge and recharge combiner include it is N number of with it is electric
Pond group corresponds, for according to the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack
The charge-discharge modules 1 being controlled, one end of each charge-discharge modules 1 connect with corresponding battery pack, each discharge and recharge
The other end of module 1 is 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 discharge and recharge to battery pack and are controlled.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, do not need each battery pack to be connected in parallel as in the prior art first, also just avoid indirectly by
In parallel connection battery pack between there is pressure difference and occur circulation the occurrence of.In addition, in face of different types of battery pack it
Between or same kind battery pack usage 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 stable performance each battery pack is maximized the use, improve the efficiency of electric power system.
The utility model provides a kind of discharge and recharge combiner, and applied to electric power system, electric power system includes N number of battery
Group, N are positive integer, and discharge and recharge combiner is corresponded with battery pack including N number of, charging/discharging voltage is preset for basis and preset
The charge-discharge modules that discharge and recharge of the charging and discharging currents to corresponding battery pack is controlled, one end of each charge-discharge modules
Corresponding battery pack connection, the other end of each charge-discharge modules are 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, it is high in the absence of situation about mutually being discharged between battery pack, safety and reliability.In addition, the application
It can be separately provided, protected come the charging voltage to each battery pack and charging and discharging currents 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 execution 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 of the discharge and recharge execution module to corresponding battery pack.
Specifically, the default charging/discharging voltage of the battery pack and default charging and discharging currents 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 after dispatching from the factory according to being actually needed replacement
, the application is not particularly limited herein, is determined according to actual conditions.
As a kind of preferred embodiment, discharge and recharge execution 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 corresponded to by the drive circuit of each metal-oxide-semiconductor be connected with the grid of each metal-oxide-semiconductor respectively, the first PMOS Q11
Drain electrode be connected with the 8th PMOS drain electrode, the positive bus-bar with dc bus, electric capacity of voltage regulation C be just respectively for the 8th PMOS source electrode
The connection of end and the 6th PMOS Q16 source electrode, 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
The negative electrode connection of first PMOS Q11 source electrode, the drain electrode of the 4th PMOS Q14 source electrode, NMOS and diode D17, 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, NMOS the source electrode anode with diode D17, the negative pole, straight of battery pack respectively
Flow the negative busbar of bus and electric capacity of voltage regulation C negative terminal connection.
Fig. 2 is refer to, Fig. 2 is a kind of structural representation of discharge and recharge execution module provided by the utility model.
Specifically, discharge and recharge execution 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 realize 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 uses buck buck topology structures to battery pack charging stage, charge-discharge modules 1：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 turns 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 inspection leakage resistance-diode D17-inductance L, inductance L releases energy.
For battery pack by charge-discharge modules 1 to dc bus discharge regime, charge-discharge modules 1 are electric discharge boost topology knots
Structure, battery voltage highest charge-discharge modules 1 export to dc bus output for constant pressure, discharge and recharge corresponding to other battery packs
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-NMOS tube Q17-first examines leakage resistance-battery pack, 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
The two PMOS Q12-PMOS Q18 of PMOS Q11-the 8th of inductance L-the first-dc bus-second is examined leakage resistance-first and examined
Leakage resistance-battery pack, inductance L release energy.
For single battery group to dc bus discharge regime, 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 PMOS Q16 of PMOS Q15-the 6th of L-the 5th-dc bus-second examines leakage resistance-first and examines leakage resistance-battery pack,
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
The seamless switching of discharge and recharge of the battery pack to 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 execution 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 corresponded to by the drive circuit of each metal-oxide-semiconductor be connected 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 connects, the 2nd NMOS Q22 the source electrode source electrode with the 6th NMOS Q26, electric capacity of voltage regulation C negative terminal and dc bus respectively
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, PMOS Q27 the drain positive pole with corresponding battery pack, two poles respectively
The positive bus-bar connection of pipe D27 negative electrode, the anode of voltage-stabilized power supply and dc bus.
Fig. 3 is refer to, Fig. 3 is the structural representation of another discharge and recharge execution module provided by the utility model.
Discharge and recharge execution module in the operation principle and above-described embodiment of discharge and recharge execution module in the present embodiment
Operation principle is identical, and simply one is that discharge and recharge execution module is arranged on the electrode line between battery and dc bus, and one
It is individual that discharge and recharge execution module is arranged in the negative line between battery and dc bus, have as above-mentioned embodiment identical has
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 of each battery pack and default charging and discharging currents 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 increasingly longer or external working environment the change of the usage time 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 provides
Also include charge-discharge modules controller, user by it according to being actually needed 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 utility model 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 utility model are 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
It is maximumlly to utilize each battery pack, the charge-discharge modules controller in the application is also during including polytype battery pack
With battery pack priority, function is set, 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 of oneself current setting and default charging and discharging currents 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 utility model exist
This is not particularly limited, and 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 1 corresponding battery pack of charge-discharge modules；
For detecting the current detection circuit with the charging and discharging currents of 1 corresponding battery pack of charge-discharge modules；
For the direct current bus voltage detecting circuit for the voltage for detecting dc bus；
MCU is also connected respectively with voltage detecting circuit, current detection circuit and direct current bus voltage detecting circuit connects, and uses
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 the voltage of battery pack, the charging and discharging currents of battery pack and direct current mother by processing module
The voltage of line and display.
Specifically, charge-discharge modules 1 are also adopted to the voltage of the voltage of battery pack, charging and discharging currents and dc bus
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：
It is arranged on first with the negative side of 1 corresponding battery pack of charge-discharge modules, for the first charging and discharging currents of detection
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, the utility model additionally provides a kind of electric power system, including N number of battery pack, N is just
Integer, in addition to the discharge and recharge combiner of item as described above.
Introduction for electric power system provided by the utility model refer to above-described embodiment, and the utility model is herein no longer
Repeat.
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 any this actual relation or order be present.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 elements not only include those
Key element, but also the other element 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
Other identical element in the process including the key element, method, article or equipment also be present.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
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 is connected with corresponding battery pack, and the other end of each charge-discharge modules is 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 execution 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 are simultaneously controlled by discharge and recharge of the discharge and recharge execution module to corresponding battery pack.
3. discharge and recharge combiner as claimed in claim 2, it is characterised in that the discharge and recharge execution 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 corresponded to by the drive circuit of each metal-oxide-semiconductor be connected 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 respectively the positive bus-bar with the dc bus,
The anode of the electric capacity of voltage regulation and the 6th PMOS source electrode connect, and the drain electrode of the 6th PMOS is with the 5th PMOS's
Drain electrode connection, the source electrode of the 5th PMOS are connected with the drain electrode of the 2nd PMOS and the first end of the inductance respectively, institute
State the second end of inductance respectively the source electrode with the first PMOS, the 4th PMOS source electrode, the NMOS drain electrode and institute
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 connects 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 negative terminal connection of the anode of diode, the negative pole of the battery pack, 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 execution 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 corresponded to by the drive circuit of each metal-oxide-semiconductor be connected 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 source electrode with the 6th NMOS, the negative terminal of the electric capacity of voltage regulation and described respectively
The negative busbar connection of dc bus, the drain electrode of the 3rd NMOS are connected with the drain electrode of the 4th NMOS, the 4th NMOS
Source electrode the second end with the inductance, the source electrode of the 5th NMOS, the source electrode of the PMOS and the diode respectively
Anode connects, 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 anode of the electric capacity of voltage regulation and the dc bus positive bus-bar connection.
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 include：
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 of each battery pack and default charging and discharging currents
Or modification, the processing module are 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, the default charging/discharging voltage set for showing the parameter setting module
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 respectively with the voltage detecting circuit, current detection circuit and DC bus-bar voltage detection is electric
Road connects, 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 is additionally operable to receive the discharge and recharge of the voltage, the battery pack of the battery pack by the processing module
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 are positive integer, it is characterised in that also include claim 1-9 such as and appoint
Discharge and recharge combiner described in one.
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| CN201720888264.4U CN207021734U (en) | 2017-07-20 | 2017-07-20 | A kind of discharge and recharge combiner and electric power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107154665A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of discharge and recharge combiner and electric power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154665A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of discharge and recharge combiner and electric power system |
| CN107154665B (en) * | 2017-07-20 | 2024-01-02 | 山东圣阳电源股份有限公司 | Charging and discharging combiner and power supply system |
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