CN207150208U - A kind of batteries management system and electric power system - Google Patents
A kind of batteries management system and electric power system Download PDFInfo
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- CN207150208U CN207150208U CN201720886450.4U CN201720886450U CN207150208U CN 207150208 U CN207150208 U CN 207150208U CN 201720886450 U CN201720886450 U CN 201720886450U CN 207150208 U CN207150208 U CN 207150208U
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Abstract
The utility model discloses a kind of batteries management system and electric power system, include being used for the battery management unit BMU modules being configured to presetting charging/discharging voltage and default charging and discharging currents with the one-to-one battery set management subsystem of N number of battery pack, each battery set management subsystem including N number of；The charge-discharge modules that control terminal is connected with BMU modules, first end is connected with corresponding battery pack, the second end is connected with dc bus, for being controlled according to the default discharge and recharge of charging/discharging voltage and default charging and discharging currents to corresponding battery pack.The charge-discharge parameter of battery pack user is facilitated according to actual conditions by BMU modules in the application is changed, practicality is high, strong adaptability.It is in addition, each battery pack is connected to dc bus by corresponding charge-discharge modules, high in the absence of situation about mutually being discharged between battery pack, safety and reliability, it is ensured that to be maximized the use on the premise of each battery performance is stable.
Description
Technical field
Technical field of battery management is the utility model is related to, is more particularly to a kind of batteries management system 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 batteries management system and electric power system, and practicality is high, strong adaptability,
Without directly in parallel between each battery pack, no matter deposited between battery pack in the absence of pressure difference, in the absence of mutual between battery pack
The situation of electric discharge, safety and reliability are high.In addition, the application can be according to the difference of each battery pack come to each battery pack
Charging voltage and charging and discharging currents be separately provided, cause each electricity on the premise of ensureing that each battery performance is stable
Pond group maximizes the use.
In order to solve the above technical problems, the utility model provides a kind of batteries management system, applied to electric power system,
The electric power system includes N number of battery pack, and N is positive integer, and the batteries management system includes N number of and N number of battery pack
One-to-one battery set management subsystem, wherein, each battery set management subsystem includes：
For the battery management unit BMU modules being configured to presetting charging/discharging voltage and default charging and discharging currents；
Control terminal is connected with the BMU modules, first end is connected with corresponding battery pack, the second end and dc bus
The charge-discharge modules of connection, for according to the default charging/discharging voltage and the default charging and discharging currents to corresponding electricity
The discharge and recharge of pond group is controlled.
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, the 7th PMOS and its drive circuit, inductance, electric capacity of voltage regulation and diode, and each PMOS includes parasitism
Diode, wherein：
The MCU is connected by the way that the drive circuit of each PMOS is corresponding with the grid of each PMOS respectively, and described the
One PMOS drain electrode is connected with the drain electrode of the 7th PMOS, the source electrode of the 7th PMOS respectively with the dc bus just
The source electrode connection of bus, 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 source electrode with the first PMOS, the source electrode of the 4th PMOS and the diode respectively
Negative electrode connects, and the drain electrode of the 4th PMOS is connected with the drain electrode of the 3rd PMOS, the source electrode of the 3rd PMOS respectively with
The source electrode of 2nd PMOS and the connection of the positive pole of corresponding battery pack, the anode of the diode respectively with the battery pack
The negative terminal connection of negative pole, the negative busbar of the dc bus and the electric capacity of voltage regulation.
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, inductance, electric capacity of voltage regulation and diode, and each NMOS tube includes parasitic diode, wherein：
The MCU is connected by the corresponding grid with each NMOS passes of the drive circuit of each NMOS tube respectively, and described the
One NMOS source electrode connects with the negative pole of corresponding battery pack and the source electrode of the 3rd NMOS respectively, the leakage of the first NMOS
Pole is connected with the first end of the inductance and the drain electrode of the 2nd NMOS respectively, the source electrode of the 2nd NMOS respectively with it is described
The negative busbar connection of 6th NMOS source electrode, the first end of the electric capacity of voltage regulation and the dc bus, the 3rd NMOS's
Drain electrode is connected with the drain electrode of the 4th NMOS, the source electrode of the 4th NMOS the second end with the inductance, described the respectively
The anode of five NMOS source electrode and the diode connects, and the drain electrode of the 5th NMOS connects with the drain electrode of the 6th NMOS
Connect, the negative electrode of the diode connects with the positive pole of corresponding battery pack and the positive bus-bar of the dc bus respectively.
Preferably, the BMU modules 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, the processing module is used for the default charging/discharging voltage after being reset by the communication module and default discharge and recharge
Electric current is sent to corresponding MCU.
Preferably, the BMU modules also include：
For the total voltage detection circuit of battery pack for the total voltage for detecting each battery pack；
For the current detection circuit for the charging and discharging currents for detecting each battery pack；
The processing module is also connected with the total voltage detection circuit of battery pack and the current detection circuit respectively, is used
Calculated in the total voltage according to the battery pack and the charging and discharging currents of the battery pack, using current integration method and battery standardization
The state-of-charge SOC value of the battery pack, it is additionally operable to detect in the battery pack voltage of each battery cell and according to the electricity
Pressure carries out electric voltage equalization to the battery cell；
It is connected with the processing module, for the default charging/discharging voltage, the default charging and discharging currents, Ge Ge electricity
The display module that charging and discharging currents, total voltage and the SOC value of pond group are shown.
Preferably, the BMU modules are additionally operable to when detecting that battery pack is under-voltage, control the discharge and recharge mould of respective battery group
Block disconnects.
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 batteries management system also includes：
Be connected with each BMU modules, for by the processing module in each BMU modules to each electricity
The running status of pond group is monitored, and is additionally operable to by the processing module in each BMU modules to each battery pack
Default charging/discharging voltage and default charging and discharging currents set long-range monitoring modular；
It is connected with each BMU modules, for being filled by each BMU modules to each the default of the battery pack
The host computer that discharge voltage and default charging and discharging currents are configured.
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 batteries management system as described above.
The utility model provides a kind of batteries management system, and applied to electric power system, electric power system includes N number of battery
Group, N are positive integer, and batteries management system includes the N number of and one-to-one battery set management subsystem of N number of battery pack, wherein,
Each battery set management subsystem includes being used for the cell tube being configured to presetting charging/discharging voltage and default charging and discharging currents
Manage unit B MU modules；Control terminal is connected with BMU modules, first end is connected with corresponding battery pack, the second end and direct current are female
The charge-discharge modules of line connection, for the default charging/discharging voltage of basis and default charging and discharging currents to corresponding battery pack
Discharge and recharge is controlled.
, can be by BMU modules come the default charging/discharging voltage to corresponding battery pack and pre- it can be seen that in the application
It is electric according to default charging/discharging voltage and default discharge and recharge so as to the charge-discharge modules of the battery pack if charging and discharging currents are configured
Flow discharge and recharge to corresponding battery pack to be controlled, facilitate user and changed according to actual conditions the discharge and recharge of battery pack
Parameter, practicality is high, strong adaptability.In addition, 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, need not be directly in parallel between each battery pack, no matter electricity
Deposited between the group of pond 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 can individually be set according to the difference of each battery pack come the charging voltage to each battery pack and charging and discharging currents
Put, on the premise of ensureing that each battery performance is stable each battery pack is maximized 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 batteries management system and electric power system, and practicality is high, strong adaptability,
Without directly in parallel between each battery pack, no matter deposited between battery pack in the absence of pressure difference, in the absence of mutual between battery pack
The situation of electric discharge, safety and reliability are high.In addition, the application can be according to the difference of each battery pack come to each battery pack
Charging voltage and charging and discharging currents be separately provided, cause each electricity on the premise of ensureing that each battery performance is stable
Pond group maximizes the use.
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 batteries management system provided by the utility model, the system
Applied to electric power system, electric power system includes N number of battery pack, and N is positive integer, and batteries management system includes N number of and N number of battery
The one-to-one battery set management subsystem of group, wherein, each battery set management subsystem includes：
For the battery management unit BMU modules 1 being configured to presetting charging/discharging voltage and default charging and discharging currents；
Control terminal is connected with BMU modules 1, first end is connected with corresponding battery pack, the second end and dc bus connect
The charge-discharge modules 2 connect, for according to default charging/discharging voltage and default charging and discharging currents filling to corresponding battery pack
Electric discharge is controlled.
Specifically, the application is provided with a charge-discharge modules 2, discharge and recharge between each battery pack and dc bus
Module 2 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 2 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.
In addition, it is generally the case that an initial default charging/discharging voltage can be built-in with charge-discharge modules 2 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 battery set management system that the application provides
System also includes BMU (Battery Management Unit, battery management unit), on the one hand, user can be by it according to reality
Border needs that the default charging/discharging voltage of charge-discharge modules 2 and default charging and discharging currents are configured or changed；On the other hand,
BMU is typically each had been provided with existing batteries management system, the application directly can carry out discharge and recharge using existing BMU
The setting of the default charging/discharging voltage and default charging and discharging currents of module 2, reduces cost, reduces batteries management system
Volume；In addition, BMU also has voltage x current from balanced function, the management to battery pack is realized.
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 2 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.
In addition, battery pack here can be lead-acid battery group or lithium battery group.
Specifically, can be the series connection of 4 section monomer lead-acid batteries or 16 sections (or 15 when battery pack nominal voltage is 48V
Section) single lithium battery series connection；The positive pole and negative pole of battery pack are connected by wire and corresponding BMU modules 1.Cell
Voltage detecting and the mode of connection of equilibrium have one wire system connection and double wire system connection：So-called one wire system connection, i.e., two adjacent sections
Cell shares a detection line, such as the lithium battery group of 16 strings, required detection line share 17；So-called double wire system connection,
Two detection lines of i.e. each cell, it is total in the absence of shared detection line, such as the lithium battery group of 16 strings, required detection line
There are 32.Consider for wiring is convenient, the application can be using one wire system connection.Certainly, battery pack here can also adopt
With double wire system connection.
The utility model provides a kind of batteries management system, and applied to electric power system, electric power system includes N number of battery
Group, N are positive integer, and batteries management system includes the N number of and one-to-one battery set management subsystem of N number of battery pack, wherein,
Each battery set management subsystem includes being used for the cell tube being configured to presetting charging/discharging voltage and default charging and discharging currents
Manage unit B MU modules；Control terminal is connected with BMU modules, first end is connected with corresponding battery pack, the second end and direct current are female
The charge-discharge modules of line connection, for the default charging/discharging voltage of basis and default charging and discharging currents to corresponding battery pack
Discharge and recharge is controlled.
, can be by BMU modules come the default charging/discharging voltage to corresponding battery pack and pre- it can be seen that in the application
It is electric according to default charging/discharging voltage and default discharge and recharge so as to the charge-discharge modules of the battery pack if charging and discharging currents are configured
Flow discharge and recharge to corresponding battery pack to be controlled, facilitate user and changed according to actual conditions the discharge and recharge of battery pack
Parameter, practicality is high, strong adaptability.In addition, 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, need not be directly in parallel between each battery pack, no matter electricity
Deposited between the group of pond 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 can individually be set according to the difference of each battery pack come the charging voltage to each battery pack and charging and discharging currents
Put, on the premise of ensureing that each battery performance is stable each battery pack is maximized the use.
On the basis of a upper embodiment：
As a kind of preferred embodiment, charge-discharge modules 2 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.
Further, charge-discharge modules 2 are a complete execution unit in itself, and charge-discharge modules 2 are using in electric current loop
Ring, the working method of Voltage loop outer shroud, built-in default charging/discharging voltage and default charging and discharging currents, when MCU is not received by BMU
During the new setup parameter sent, MCU is defined by built-in default charging/discharging voltage and default charging and discharging currents, carries out charge and discharge automatically
Electric control.
In addition, the MCU in the application can use STM32 chips, it is, of course, also possible to using other kinds of chip, sheet
Utility model is not particularly limited herein.
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, the 7th PMOS Q17 and its drive circuit, inductance,
Electric capacity of voltage regulation and diode D11, and each PMOS includes parasitic diode, wherein：
MCU is corresponded to by the drive circuit of each PMOS be connected with the grid of each PMOS respectively, the first PMOS
Q11 drain electrode is connected with the 7th PMOS Q17 drain electrode, the 7th PMOS Q17 source electrode positive bus-bar with dc bus, steady respectively
The anode of voltage capacitance and the 6th PMOS Q16 source electrode connect, and the 6th PMOS Q16 drain electrode connects with the 5th PMOS Q15 drain electrode
Connect, the 5th PMOS Q15 source electrode is connected with the 2nd PMOS Q12 drain electrode and the first end of inductance respectively, the second end of inductance
It is connected respectively with the first PMOS Q11 source electrode, the 4th PMOS Q14 source electrode and diode D11 negative electrode, the 4th PMOS Q14
Drain electrode be connected with the 3rd PMOS Q13 drain electrode, the 3rd PMOS Q13 source electrode respectively with the 2nd PMOS Q12 source electrode and right
The positive pole connection for the battery pack answered, the diode D11 anode negative pole with battery pack, the negative busbar of dc bus and voltage stabilizing respectively
The negative terminal connection of electric capacity.
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 charging buck topological structures and electric discharge buck topological structures, and MCU passes through control
Discharge and recharge electricity when making corresponding metal-oxide-semiconductor to realize that dc bus charges to battery pack or when battery pack is discharged dc bus
The control of stream and voltage.
Dc bus is depressured charging topological structure to the battery pack charging stage using buck：3rd PMOS Q13, the 4th
PMOS Q14, the 5th PMOS Q15, the 6th PMOS Q16 are off state, and the 2nd PMOS Q12 are in the conduction state, and MCU is defeated
Go out pwm signal and control the first PMOS Q11 pipes and the 7th PMOS Q17 break-make.First PMOS Q11 and the 7th PMOS Q17 are same
When conducting phase, electric current is by the PMOS Q12 of the PMOS Q11 of PMOS Q17-the first of dc bus-the 7th-inductance-the 2nd-electricity
Pond group-dc bus, inductance storage energy；First PMOS Q11 and the 7th PMOS Q17 simultaneously turn off the stage, and electric current is by electricity
Feel the-the two PMOS Q12-battery pack-diodes D11-inductance, inductance releases energy.MCU is by controlling accounting for for pwm signal
Empty ratio, to adjust the size of charging current value.
Battery pack is to dc bus discharge regime, using buck step-down discharge topological structures：First PMOS Q11, the 7th
PMOS Q17, the 2nd PMOS Q12 are off state, and the 5th PMOS Q15, the 6th PMOS Q16 are in the conduction state, and MCU is defeated
Go out pwm signal and control the 3rd PMOS Q13, the 4th PMOS Q14 break-make.3rd PMOS Q13, the 4th PMOS Q14 are in and led
Logical state, electric current is by the PMOS of PMOS Q13-the 4th of battery pack-the 3rd Q14-PMOS Q15-the 6th of inductance L-the 5th
PMOS Q16-dc bus-battery pack, inductance storage energy；3rd PMOS Q13, the 4th PMOS Q14 are off shape
State, electric current is by the PMOS Q16-dc bus-diodes of PMOS Q15-the 6th of inductance-the 5th D11-inductance, inductance release
Energy.MCU is by controlling the dutycycle of pwm signal, to adjust the size of charging current value.
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, inductance, electric capacity of voltage regulation and diode D21, and it is each
NMOS tube includes parasitic diode, wherein：
MCU is connected by the corresponding grid closed with each NMOS of drive circuit of each NMOS tube respectively, the first NMOS
Q21 source electrode connects with the negative pole of corresponding battery pack and the 3rd NMOS Q23 source electrode respectively, the first NMOS Q21 drain electrode
Be connected respectively with the first end of inductance and the 2nd NMOS Q22 drain electrode, the 2nd NMOS Q22 source electrode respectively with the 6th NMOS
The negative busbar connection of Q26 source electrode, the first end of electric capacity of voltage regulation and dc bus, the 3rd NMOS Q23 drain electrode and the 4th NMOS
Q24 drain electrode connection, the 4th NMOS Q24 source electrode the second end with inductance, the 5th NMOS Q25 source electrode and diode respectively
D21 anode connection, the 5th NMOS Q25 drain electrode are connected with the 6th NMOS Q26 drain electrode, diode D21 negative electrode difference
Connected with the positive pole of corresponding battery pack and the positive bus-bar of 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, BMU modules 1 include：
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 by processing module, processing module is used for
Default charging/discharging voltage and default charging and discharging currents after being reset by communication module 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 2 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, user passes through the BMU modules in the application
1 basis, which is actually needed, to be configured or changes to the default charging/discharging voltage of charge-discharge modules 2 and default charging and discharging currents.
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, BMU modules 1 also include：
For the total voltage detection circuit of battery pack for the total voltage for detecting each battery pack；
For the current detection circuit for the charging and discharging currents for detecting each battery pack；
Processing module is also connected with total voltage detection circuit of battery pack and current detection circuit respectively, for according to battery pack
Total voltage and the battery pack charging and discharging currents, calculate using current integration method and battery standardization the state-of-charge of battery pack
SOC value, it is additionally operable to detect the voltage of each battery cell in battery pack and electric voltage equalization is carried out to the battery cell according to voltage；
It is connected with processing module, for the discharge and recharge to presetting charging/discharging voltage, default charging and discharging currents, each battery pack
The display module that electric current, total voltage and SOC value are shown.
Specifically, total voltage of the BMU modules 1 also to battery pack, charging and discharging currents are acquired, and according to the total of battery pack
Voltage and the charging and discharging currents of the battery pack calculate the state-of-charge SOC value of battery pack, also by default charging/discharging voltage, preset and fill
Discharge current, the charging and discharging currents of each battery pack, total voltage and SOC value shown on display module, so as to user and
When understand above-mentioned parameter, be conveniently adjusted default charging/discharging voltage and default charging and discharging currents.
As a kind of preferred embodiment, BMU modules 1 are additionally operable to when detecting that battery pack is under-voltage, control respective battery
The charge-discharge modules 2 of group disconnect.
In order to avoid still occurring when battery pack is under-voltage in situation about using, BMU modules 1 can be when battery pack be under-voltage, control
The charge-discharge modules 2 of respective battery group disconnect, and improve the service life of battery pack.
As a kind of preferred embodiment, charge-discharge modules 2 also include：
For detecting circuit is detected with the battery voltage of the voltage of 2 corresponding battery pack of charge-discharge modules；
For detecting the current detection circuit with the charging and discharging currents of 2 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 2 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.
In addition, charge-discharge modules 2 judge whether battery pack needs to charge by detecting the total voltage of battery pack；Pass through inspection
The voltage surveyed on dc bus, judges whether to need battery power discharge；By first inspection leakage resistance and its current detection circuit come
The size of current of charging and discharging circuit is detected, the size of charging and discharging currents is adjusted by controlling the PWM drive signal dutycycle of metal-oxide-semiconductor
Section.
In a kind of practical application, civil power power down is the necessary condition of battery power discharge, but if directly detecting civil power, increases
Cabling difficulty is added, the application is by judging whether d-c bus voltage value whether there is less than 53.5V come indirect detection civil power.
By taking Fig. 2 as an example, specifically, it is female to direct current that system is switched to battery pack by DC master row to the charged state of battery pack
Line discharge condition：System judges the working condition (dc bus under normal circumstances of system by detecting the magnitude of voltage of dc bus
Voltage is 53.5V, is discharge condition less than this value), if desired discharge, system by the 3rd PMOS Q13, the 4th PMOS Q14,
5th PMOS Q15, the 6th PMOS Q16 are turned on, and the first PMOS Q11, the 7th PMOS Q17, the 2nd PMOS Q12 are disconnected, together
When by second inspection leakage resistance detect discharge loop current value, pass through pwm signal control the 3rd PMOS Q13, the 4th PMOS
Q14 break-make, electric discharge to dc bus is realized using buck step-down discharges topological structure, by control the 3rd PMOS Q13,
4th PMOS Q14 pwm signal dutycycle, realize any setting of the discharge current between 0-50A.
As a kind of preferred embodiment, batteries management system also includes：
It is connected with each BMU modules, for by operation shape of the processing module in each BMU modules to each battery pack
State is monitored, and is additionally operable to by the processing module in each BMU modules to the default charging/discharging voltage of each battery pack and pre-
If the long-range monitoring modular that charging and discharging currents are set；
Be connected with each BMU modules 1, for by each BMU modules 1 to the default charging/discharging voltage of each battery pack and
The host computer that default charging and discharging currents are configured.
Remote monitoring in order to facilitate user to battery management system, the application also include long-range monitoring modular and upper
Machine, specifically, long-range monitoring modular have GPRS communication functions, and data friendship is carried out using mobile network and background monitoring center
Mutually；Also there is background monitoring function, data (such as default charging/discharging voltage is carried out using mobile network and background monitoring center
With default charging and discharging currents) interaction.In addition, host computer also has the function of background monitoring and data interaction.
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 batteries management system 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 batteries management system, applied to electric power system, the electric power system includes N number of battery pack, and N is positive integer,
Characterized in that, the batteries management system includes N number of and N number of one-to-one battery set management subsystem of battery pack
System, wherein, each battery set management subsystem includes：
For the battery management unit BMU modules being configured to presetting charging/discharging voltage and default charging and discharging currents；
Control terminal is connected with the BMU modules, first end is connected with corresponding battery pack, the second end is connected with dc bus
Charge-discharge modules, for according to the default charging/discharging voltage and the default charging and discharging currents to corresponding battery pack
Discharge and recharge be controlled.
2. batteries management system 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. batteries management system as claimed in claim 2, it is characterised in that the discharge and recharge execution module includes 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 driving electricity
Road, the 5th PMOS and its drive circuit, the 6th PMOS and its drive circuit, the 7th PMOS and its drive circuit, inductance, voltage stabilizing electricity
Appearance and diode, and each PMOS includes parasitic diode, wherein：
The MCU is corresponded to by the drive circuit of each PMOS be connected with the grid of each PMOS respectively, and described first
PMOS drain electrode is connected with the drain electrode of the 7th PMOS, the source electrode of the 7th 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 source electrode with the first PMOS, the source electrode of the 4th PMOS and the diode respectively
Negative electrode connects, and the drain electrode of the 4th PMOS is connected with the drain electrode of the 3rd PMOS, the source electrode of the 3rd PMOS respectively with
The source electrode of 2nd PMOS and the connection of the positive pole of corresponding battery pack, the anode of the diode respectively with the battery pack
The negative terminal connection of negative pole, the negative busbar of the dc bus and the electric capacity of voltage regulation.
4. batteries management system as claimed in claim 2, it is characterised in that the discharge and recharge execution module includes 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 driving electricity
Road, the 5th NMOS and its drive circuit, the 6th NMOS and its drive circuit, inductance, electric capacity of voltage regulation and diode, and each NMOS
Guan Jun includes parasitic diode, wherein：
The MCU is connected by the corresponding grid closed with each NMOS of drive circuit of each NMOS tube 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 drain electrode of the 2nd NMOS, the source electrode of the 2nd NMOS is respectively with described
The negative busbar connection of six NMOS source electrode, the first end of the electric capacity of voltage regulation and the dc bus, the leakage of the 3rd NMOS
Pole is connected with the drain electrode of the 4th NMOS, the source electrode of the 4th NMOS the second end with the inductance, the described 5th respectively
The anode of NMOS source electrode and the diode is connected, and the drain electrode of the 5th NMOS is connected with the drain electrode of the 6th NMOS,
The negative electrode of the diode connects with the positive pole of corresponding battery pack and the positive bus-bar of the dc bus respectively.
5. the batteries management system as described in claim 3 or 4, it is characterised in that the BMU modules 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,
The processing module is used for the default charging/discharging voltage after being reset by the communication module and default charging and discharging currents
Send to corresponding MCU.
6. batteries management system as claimed in claim 5, it is characterised in that the BMU modules also include：
For the total voltage detection circuit of battery pack for the total voltage for detecting each battery pack；
For the current detection circuit for the charging and discharging currents for detecting each battery pack；
The processing module is also connected with the total voltage detection circuit of battery pack and the current detection circuit respectively, for root
According to the battery pack total voltage and the battery pack charging and discharging currents, calculated using current integration method and battery standardization described in
The state-of-charge SOC value of battery pack, it is additionally operable to detect in the battery pack voltage of each battery cell and according to the voltage pair
The battery cell carries out electric voltage equalization；
It is connected with the processing module, for the default charging/discharging voltage, the default charging and discharging currents, each battery pack
The display module that is shown of charging and discharging currents, total voltage and SOC value.
7. batteries management system as claimed in claim 6, it is characterised in that the BMU modules, which are additionally operable to work as, detects electricity
When pond group is under-voltage, the charge-discharge modules of control respective battery group disconnect.
8. batteries management system 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. batteries management system as claimed in claim 6, it is characterised in that the batteries management system also includes：
Be connected with each BMU modules, for by the processing module in each BMU modules to each battery pack
Running status be monitored, be additionally operable to by the processing module in each BMU modules to the pre- of each battery pack
If the long-range monitoring modular that charging/discharging voltage and default charging and discharging currents are set；
It is connected with each BMU modules, for by default discharge and recharge of each BMU modules to each battery pack
The host computer that voltage and default charging and discharging currents are configured.
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
Batteries management system described in one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107154666A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of batteries management system and electric power system |
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| CN107154666A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of batteries management system and electric power system |
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