CN108321890A - Battery management method, system, battery pack and its control method - Google Patents
Battery management method, system, battery pack and its control method Download PDFInfo
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- CN108321890A CN108321890A CN201810142213.6A CN201810142213A CN108321890A CN 108321890 A CN108321890 A CN 108321890A CN 201810142213 A CN201810142213 A CN 201810142213A CN 108321890 A CN108321890 A CN 108321890A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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Abstract
An embodiment of the present invention provides a kind of battery management method, system, battery pack and its control methods, are related to power technique fields.The battery management system includes：Management module, multiple power modules and reduction voltage circuit, wherein, each power module in multiple power modules is connect with a battery, each power module in multiple power modules is connect with management module respectively, the output end of general supply is connect with each power module, the output end of general supply and the input terminal of reduction voltage circuit connect, and the output end of reduction voltage circuit is connect with management module；Power module is used to obtain the battery status information of connected battery, management module is used to determine fail battery based on each battery status information, and generate the first control instruction, the corresponding power module of fail battery exports first voltage based on the first control instruction at the both ends of fail battery, and exports discharge current.The battery management system, method, battery pack and its control method can ensure the steady operation of battery pack.
Description
Technical field
The present invention relates to power technique fields, in particular to a kind of battery management method, system, battery pack and its
Control method.
Background technology
With the development of electronic technology, in order to meet the power demands of electronic equipment, it will usually to multiple single batteries into
Row connects to obtain battery pack, and battery pack can provide higher voltage for electronic equipment.Lead-acid accumulator manages system (i.e.
BMS it) is used to that each piece of battery in battery pack to be monitored and managed, is generally integrated battery data sampling, battery balanced, letter
The functions such as breath transmission.If but battery electric discharge when break down when, entire energy-storage system will be stopped.
Invention content
In view of this, the present invention provides a kind of battery management method, system, battery pack and its control methods.
To achieve the above object, the present invention provides the following technical solutions：
In a first aspect, an embodiment of the present invention provides a kind of battery management system, the battery management system includes：Management
Module, multiple power modules and reduction voltage circuit, wherein each of the multiple power module power module is with one
A battery connection, each of the multiple power module power module are connect with the management module respectively, Mei Gesuo
It states battery and is followed in series to form general supply, the output end of the general supply is connect with each power module, the general supply
Output end connect with the input terminal of the reduction voltage circuit, the output end of the reduction voltage circuit is connect with the management module, institute
General supply is stated for the management module and the power supply of the multiple power module；Each power module is for obtaining institute
The battery status information of the battery of connection, the management module, the management mould are sent to by the battery status information
Block is used to determine the fail battery in multiple batteries based on each battery status information, and generates multiple power supplys
First control instruction of power module corresponding with the fail battery in module, the corresponding power module base of the fail battery
First voltage is exported at the both ends of the fail battery in first control instruction, and exports discharge current, to realize replacement
The fail battery discharges, wherein the first voltage and any in multiple batteries in addition to the fail battery
The voltage of other batteries is consistent.
As an alternative embodiment, in above-mentioned battery management system, the management module is additionally operable to based on each
The battery status information determines the relatively low battery of the electricity in multiple batteries, and generate in multiple power modules with
Second control instruction of the corresponding power module of the relatively low battery of the electricity, the corresponding power supply mould of the relatively low battery of the electricity
Block exports the first voltage based on second control instruction at the both ends of the relatively low battery of the electricity, and exports electric discharge electricity
Flowing and exporting charging current gives the electricity relatively low battery charging.
As an alternative embodiment, in above-mentioned battery management system, the management module is additionally operable to based on each
The battery status information determines the battery to be balanced different from the voltage of other batteries of the voltage in multiple batteries, and raw
At the third control instruction of power module corresponding with the battery to be balanced in multiple power modules, the electricity to be equalized
The corresponding power module in pond is based on the third control instruction and controls the battery to be balanced output equalizing voltage, so that all institutes
The voltage for stating battery is consistent.
As an alternative embodiment, in above-mentioned battery management system, the battery management system further includes display
Screen, the display screen are connect with the management module, and the display screen is for showing the battery status information.
As an alternative embodiment, in above-mentioned battery management system, the battery management system further includes upper
Machine, the host computer are connect with the management module, and the host computer is used to the battery status information carrying out output displaying,
And/or the battery status information is transmitted to other equipment terminal.
Second aspect, an embodiment of the present invention provides a kind of battery management methods, are applied to the management of battery management system
Module, the battery management system further include：Multiple power modules and reduction voltage circuit, wherein each battery is gone here and there successively
Connection constitutes general supply, and the output end of the general supply is connect with each power module, the output end of the general supply and institute
The input terminal connection of reduction voltage circuit is stated, the output end of the reduction voltage circuit is connect with the management module, and the general supply is used for
It powers to the management module and the multiple power module；The method includes：Each power module is obtained to obtain
The battery connected battery status information；It is determined in multiple batteries based on each battery status information
Fail battery, and the first control instruction of power module corresponding with the fail battery in multiple power modules is generated,
First control instruction is sent to the corresponding power module of the fail battery, so that the corresponding power supply of the fail battery
Module exports first voltage based on first control instruction at the both ends of the fail battery, and exports discharge current, with reality
Modern times discharge for the fail battery, wherein in the first voltage and multiple batteries in addition to the fail battery
Other any batteries voltage it is consistent.
As an alternative embodiment, in above-mentioned battery management method, the method further includes：Based on each described
Battery status information determines the relatively low battery of the electricity in multiple batteries, and generate in multiple power modules with it is described
It is inclined to be sent to the electricity by the second control instruction of the corresponding power module of the relatively low battery of electricity for second control instruction
The corresponding power module of low battery, so that the relatively low corresponding power module of battery of the electricity is based on second control and refers to
Enable and export the first voltage at the both ends of the relatively low battery of the electricity, and export discharge current and export charging current to
The relatively low battery charging of the electricity.
As an alternative embodiment, in above-mentioned battery management method, the method further includes：Based on each described
Battery status information determines the battery to be balanced different from the voltage of other batteries of the voltage in multiple batteries, and generates more
The third control instruction of power module corresponding with the battery to be balanced in a power module refers to third control
Order is sent to the corresponding power module of the battery to be balanced, and the corresponding power module of the battery to be balanced is based on the third
Control instruction controls the battery to be balanced and exports equalizing voltage, so that the voltage of all batteries is consistent.
The third aspect, an embodiment of the present invention provides a kind of battery pack, the battery pack includes：Multiple batteries, management mould
Block, multiple power modules and reduction voltage circuit, wherein the multiple battery is followed in series to form general supply, the multiple power supply
Mould each power module in the block is connect with a battery, each of the multiple power module power supply
Module is connect with the management module respectively, and the output end of the general supply is connect with each power module, total electricity
The output end in source is connect with the input terminal of the reduction voltage circuit, and the output end of the reduction voltage circuit is connect with the management module,
The general supply is used to power to the management module and the multiple power module；Each power module is for obtaining
The battery status information is sent to the management module, the management by the battery status information of the battery connected
Module is used to determine the fail battery in multiple batteries based on each battery status information, and generates multiple electricity
First control instruction of power module corresponding with the fail battery in source module, the corresponding power module of the fail battery
First voltage is exported at the both ends of the fail battery based on first control instruction, and exports discharge current, to realize generation
It discharges for the fail battery, wherein the first voltage and appointing in addition to the fail battery in multiple batteries
The voltage of one other batteries is consistent.
Fourth aspect, an embodiment of the present invention provides a kind of battery pack control method, the management mould being applied in battery pack
Block, the battery pack further include multiple batteries, multiple power modules and reduction voltage circuit, wherein the multiple battery is gone here and there successively
Connection constitutes general supply, and each of the multiple power module power module is connect with a battery, described more
Each of a power module power module is connect with the management module respectively, the output end of the general supply with it is each
The power module connection, the output end of the general supply are connect with the input terminal of the reduction voltage circuit, the reduction voltage circuit
Output end is connect with the management module；The method includes：It is described to obtain being connected for each power module acquisition
The battery status information of battery；The fail battery in multiple batteries is determined based on each battery status information, and raw
At the first control instruction of power module corresponding with the fail battery in multiple power modules, described first is controlled
Instruction is sent to the corresponding power module of the fail battery, so that the corresponding power module of the fail battery is based on described the
One control instruction exports first voltage at the both ends of the fail battery, and exports discharge current, and the failure is replaced to realize
Battery discharges, wherein the first voltage and other any batteries in multiple batteries in addition to the fail battery
Voltage it is consistent.
The advantageous effect that the present invention realizes：Battery management method, system, battery pack and its control provided in an embodiment of the present invention
Method processed, the battery management system include management module, multiple power modules and reduction voltage circuit, wherein multiple power modules
In each power module connect with a battery, each power module in multiple power modules respectively with management module connect
It connects, each battery is followed in series to form general supply, and the output end of general supply is connect with each power module, the output end of general supply
Connect with the input terminal of reduction voltage circuit, the output end of reduction voltage circuit is connect with management module, general supply be used for management module with
And multiple power module power supplies, each power module is used to obtain the battery status information of connected battery, by battery status
Information is sent to management module, and management module is used to determine the fail battery in multiple batteries based on each battery status information,
And the first control instruction of power module corresponding with fail battery in multiple power modules is generated, the corresponding power supply of fail battery
Module exports first voltage based on the first control instruction at the both ends of fail battery, and exports discharge current, and event is replaced to realize
Barrier battery discharges, wherein first voltage is consistent with the voltage of other any batteries in multiple batteries in addition to fail battery.
The battery management system may be implemented in any battery failure in detecting multiple batteries, and power module is at fail battery both ends
The output voltage consistent with other batteries, so as to so that the voltage of the voltage and other batteries at fail battery is consistent,
So that battery pack is not stopped because of fail battery, if solve in the prior art battery electric discharge when break down when,
The problem of entire energy-storage system will be stopped.
Description of the drawings
Illustrate the embodiment of the present invention or technical solution in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 shows a kind of structure diagram of battery management system provided in an embodiment of the present invention；
Fig. 2 shows another structure diagrams of battery management system provided in an embodiment of the present invention；
Fig. 3 shows another structure diagram of battery management system provided in an embodiment of the present invention；
Fig. 4 shows the flow chart of battery management method provided in an embodiment of the present invention.
Icon：100- battery management systems；110- management modules；120- power modules；130- reduction voltage circuits；140- is shown
Screen；150- host computers；160- batteries.
Specific implementation mode
In view of the foregoing, inventor is by long-term research and a large amount of practice, provide a kind of battery management method,
System, battery pack and its control method are to improve existing issue.
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is right below
The detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit the range of claimed invention, but
It is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not making creativeness
The every other embodiment obtained under the premise of labour, shall fall within the protection scope of the present invention.
First embodiment
First embodiment of the invention provides a kind of battery management system 100, refers to Fig. 1, the battery management system 100
Including：Management module 110, multiple power modules 120 and reduction voltage circuit 130.Wherein, each of multiple power modules 120
Power module 120 is connect with a battery 160, each power module 120 in multiple power modules 120 respectively with management mould
Block 110 connects, and each battery 160 is followed in series to form general supply, and the output end of general supply is connect with each power module 120,
The output end of general supply is connect with the input terminal of reduction voltage circuit 130, and the output end of reduction voltage circuit 130 is connect with management module 110,
General supply is used to power to management module 110 and multiple power modules 120.
It is understood that all batteries 160 being connect with power module 120 are all sequentially connected in series, it is total to constitute
Power supply.In concatenated circuit, the pressure difference between the cathode and the anode of last block battery 160 of first piece of battery 160 is
The corresponding voltage of general supply.General supply can be powered at management module 110 and power module 120, and certainly, general supply can connect
External loading is connect, to be powered at external loading.In addition, connection decompression electricity between management module 110 and the output end of general supply
Road 130 exports the voltage of general supply output again after the decompression of reduction voltage circuit 130 to management module 110.
In embodiments of the present invention, it can be connected by signal wire between management module 110 and each power module 120.
In embodiments of the present invention, each power module 120 is used to obtain 160 state of battery of connected battery 160
160 status information of battery is sent to management module 110 by information.Management module 110 is used to believe based on 160 state of each battery
Fail battery 160 when breath determines electric discharge in multiple batteries 160, and generate it is right with fail battery 160 in multiple power modules 120
First control instruction of the power module 120 answered.160 corresponding power module 120 of fail battery is existed based on the first control instruction
The both ends of fail battery 160 export first voltage, and export discharge current, are discharged instead of fail battery with realizing, wherein
First voltage is consistent with any voltage of other batteries 160 in multiple batteries 160 in addition to fail battery 160.
It is understood that the output end in general supply is connect with external loading, and when being powered at external loading, each power supply
Module 120 can detect 160 status information of battery of connected battery 160.Power module 120 is detecting connected electricity
After 160 status information of battery in pond 160,160 status information of battery can be sent to management module 110.Management module 110
It, can be according to the 160 status information failure judgement of battery of battery 160, electricity after 160 status information of battery for obtaining battery 160
160 electricity of pond etc., and the control instruction for matching power module 120 is generated according to 160 status information of the battery of battery 160, then
The control instruction for matching each power module 120 is sent to corresponding power module 120.
In embodiments of the present invention, management module 110 is a kind of IC chip, the processing capacity with signal.On
The management module 110 stated can be general processor, including central processing unit (Central Processing Unit, abbreviation
CPU), network processing unit (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), special
Integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor
Logical device, discrete hardware components.It may be implemented or execute disclosed each method, step and the logic in the embodiment of the present invention
Block diagram.General processor can be microprocessor or the processor can also be any conventional processor etc..
In embodiments of the present invention, power module 120 may include having power input interface, isolated buck circuit, communication
Interface, processor, detection circuit, o controller etc..Wherein, power input interface and the output end of general supply connect, power supply
Input interface and the input terminal of isolated buck circuit connect, output end and o controller and the detection electricity of isolated buck circuit
Road connects, and processor is connect by communication interface with management module, processor and o controller, isolated buck circuit and inspection
Slowdown monitoring circuit connects, and processor controls the output voltage of isolated buck circuit, and o controller is connect with battery 160.From
And the voltage of general supply output exports after isolated buck circuit is depressured to detection circuit and o controller.Unsteady flow is examined
Slowdown monitoring circuit is used to detect 160 status information of battery of power supply, and such as the remaining capacity of battery 160, the voltage at 160 end of battery passes through
The electric current etc. of battery 160.Detection circuit can be 160 detection unit of battery in BMS systems.Processor can be by detection circuit
The battery status information of detection is transmitted to management module, and processor is also based on the control instruction control isolation drop of management module
The output voltage of volt circuit, and the opening and closing of o controller are controlled, so as to control output to 160 both ends of battery
Voltage and electric current.
In embodiments of the present invention, when management module 110 judges any battery according to 160 status information of each battery
When 160 failure, then the fail battery 160 for sending the first control instruction to the failure for troubleshooting is corresponding
Power module 120.In 160 failure of battery, since 160 corresponding power module 120 of fail battery is connected to fail battery 160
Both ends, the battery 160 at 160 both ends of fail battery can be in connection shape by 160 corresponding power module 120 of fail battery
State, i.e. general supply can still work.In addition, for the voltage at balanced each battery 160, power module 120 can be according to pipe
The first control instruction that module 110 is sent is managed, the voltage output of general supply can be got to 160 both ends of fail battery, in addition,
The voltage of output should ensure that consistent with the voltage of other batteries 160.Wherein, other batteries 160 are in addition to fail battery 160
Other batteries 160.It is thus possible to ensure the equilibrium state of each battery 160.Power module 120 also exports discharge current to total
In the discharge loop of power supply.
In embodiments of the present invention, management module 110 is also based on more when the determination electric discharge of 160 status information of each battery
The relatively low battery 160 of electricity in a battery 160, and generate corresponding with the battery 160 that electricity is relatively low in multiple power modules 120
Power module 120 the second control instruction, the relatively low 160 corresponding power module 120 of battery of electricity be based on second control refers to
It enables and exports first voltage at the both ends of the relatively low battery 160 of electricity, and export discharge current and export charging current to electricity
Relatively low battery 160 charges.
It is understood that management module 110 is believed according to 160 state of battery that each power module 120 of reception is sent out
Breath, it can be determined that go out the relatively low battery 160 of electricity.The specific relatively low standard of electricity can set a default electricity, such as 10%,
5% etc..Management module 110 can preset electricity according to this and 160 status information interpretation of battery goes out the relatively low battery of electricity
160, for example, when the remaining capacity in 160 status information of battery is less than default electricity, then judge that the battery 160 is that electricity is inclined
Low battery 160.When 160 electricity of battery is relatively low, management module 110 can be generated for the relatively low feelings of 160 electricity for the treatment of of battery
Second control instruction of condition is to power module 120.Power module 120 can get general supply according to the second control instruction
Voltage output to 160 both ends of fail battery, the voltage of output should ensure that consistent with the voltage of other batteries 160.In addition, electric
Source module 120 also exports high current, and not only output discharge current is also charged by the electric current in addition to discharge current to discharge loop
Output is to the relatively low battery 160 of electricity after circuit, to charge to the relatively low battery 160 of electricity.
In embodiments of the present invention, management module 110 is additionally operable to be based on 160 status information of each battery, determines that charging is
By the battery to be balanced 160 of voltage and the voltage of other batteries 160 in multiple batteries 160 when completing, and generate multiple electricity
The third control instruction of power module corresponding with battery to be balanced 160 120, battery to be balanced 160 are corresponding in source module 120
Power module 120 is based on third control instruction control battery to be balanced 160 and exports equalizing voltage, so that the electricity of all batteries 160
Pressure is consistent.
It is understood that 160 status information of battery that management module 110 can be sent according to each power module 120,
Determine the voltage of battery 160 battery 160 different from the voltage of other batteries 160, that is, need to adjust to other batteries 160
The same battery to be balanced 160 of voltage.At this point it is possible to carry out well-balanced adjustment, for the balanced battery to be balanced 160 is generated
Three control instructions, and the third control instruction is fed back into 160 corresponding power module 120 of battery to be balanced.Power module 120
After obtaining third control instruction, then third control instruction is responded, controls the voltage and other electricity of the battery to be balanced 160 output
The consistent voltage in pond 160, the i.e. battery to be balanced 160 export equalizing voltage.
In embodiments of the present invention, refer to Fig. 2, battery management system 100 further includes display screen 140, display screen 140 with
Management module 110 connects, and display screen 140 is for showing 160 status information of battery.
It is connect with management module 110 it is understood that display screen 140 can be arranged, to which display screen 140 can be in pipe
It manages under the control of module 110,160 status information of battery of the battery 160 of the detection of power module 120 is shown, user is convenient for
It can intuitively see 160 status information of battery.
In embodiments of the present invention, refer to Fig. 3, battery management system 100 further includes host computer 150, host computer 150 with
Management module 110 connects, and host computer 150 is used to 160 status information of battery carrying out output displaying, and/or by 160 state of battery
Information is transmitted to other equipment terminal.
It is understood that setting host computer 150 is connect with management module 110, host computer 150 can be by 160 shape of battery
The output displaying of state information, can also be transmitted to other equipment terminal, so as to be convenient for user intuitive by 160 status information of battery
Recognize 160 status information of battery.
The battery management system 100 that first embodiment of the invention provides, may be implemented the battery 160 in multiple batteries 160
In group, when the voltage difference of the voltage of any battery 160 and other batteries 160, realizes well-balanced adjustment, make all batteries 160
Voltage is consistent；It can also realize when any battery 160 breaks down, keep 160 groups of states to work on of battery, and
The voltage of each battery 160 is set to be consistent；Furthermore it is also possible to realize when the remaining capacity of any battery 160 is too low, ensure
While 160 groups of regular picture of battery, charge to the battery 160 of low battery.So as to realize 160 groups of battery more
Stable work, the power supply for very important occasions such as military affairs, the energy for alloing 160 groups of battery to stablize.
Second embodiment
Second embodiment of the invention provides a kind of battery management method, which is applied to battery management system
The management module of system, the battery management system further include：Multiple power modules and reduction voltage circuit, wherein each electricity
Pond is followed in series to form general supply, and the output end of the general supply is connect with each power module, the general supply it is defeated
Outlet is connect with the input terminal of the reduction voltage circuit, and the output end of the reduction voltage circuit is connect with the management module, described total
Power supply is used to power to the management module and the multiple power module.Fig. 4 is referred to, which includes：
Step S110：Obtain the general supply battery connected that each power module obtains in electric discharge
Battery status information.
Step S120：The fail battery in multiple batteries is determined based on each battery status information, and is generated
First control instruction of power module corresponding with the fail battery in multiple power modules refers to first control
Order is sent to the corresponding power module of the fail battery, so that the corresponding power module of the fail battery is based on described first
Control instruction exports first voltage at the both ends of the fail battery, and exports discharge current, with realize replace fail battery into
Row electric discharge, wherein the voltage of the first voltage and other any batteries in multiple batteries in addition to the fail battery
Unanimously.
In embodiments of the present invention, which can also include：It is true based on each battery status information
The relatively low battery of electricity in fixed multiple batteries, and generate battery relatively low with the electricity in multiple power modules
It is corresponding to be sent to the relatively low battery of the electricity by the second control instruction of corresponding power module for second control instruction
Power module, so as to be based on second control instruction inclined in the electricity for the relatively low corresponding power module of battery of the electricity
The both ends of low battery export the first voltage, and export discharge current and export charging current relatively low to the electricity
Battery charges.
In embodiments of the present invention, which can also include：It is true based on each battery status information
Voltage in the fixed multiple batteries battery to be balanced different from the voltage of other batteries, and generate multiple power modules
In power module corresponding with the battery to be balanced third control instruction, the third control instruction is sent to described wait for
The corresponding power module of balancing battery, the corresponding power module of the battery to be balanced are based on the third control instruction and control institute
Battery to be balanced output equalizing voltage is stated, so that the voltage of all batteries is consistent.
It should be noted that the battery management method is the battery management system provided applied to first embodiment of the invention
System, other content can participate in the description of first embodiment of the invention, and this is no longer going to repeat them.
3rd embodiment
Third embodiment of the invention provides a kind of battery pack, and the battery pack includes：It is multiple batteries, management module, more
A power module and reduction voltage circuit, wherein the multiple battery is followed in series to form general supply, in the multiple power module
Each of the power module connect with a battery, each of the multiple power module power module point
Do not connect with the management module, the output end of the general supply is connect with each power module, the general supply it is defeated
Outlet is connect with the input terminal of the reduction voltage circuit, and the output end of the reduction voltage circuit is connect with the management module, described total
Power supply is used to power to the management module and the multiple power module.In embodiments of the present invention, each power supply
Module obtains the battery status information of the battery connected for the general supply, and the battery status information is sent to
The management module, the management module are used to determine the failure in multiple batteries based on each battery status information
Battery, and the first control instruction of power module corresponding with the fail battery in multiple power modules is generated, it is described
The corresponding power module of fail battery exports first voltage based on first control instruction at the both ends of the fail battery, and
Discharge current is exported, is discharged instead of fail battery with realizing, wherein removes institute in the first voltage and multiple batteries
The voltage for stating other any batteries outside fail battery is consistent.
In embodiments of the present invention, the management module is additionally operable to determine multiple institutes based on each battery status information
The relatively low battery of electricity in battery is stated, and generates electricity corresponding with the battery that the electricity is relatively low in multiple power modules
Second control instruction of source module, the corresponding power module of the relatively low battery of the electricity are based on second control instruction in institute
The both ends for stating the relatively low battery of electricity export the first voltage, and export discharge current and export charging current to the electricity
Measure relatively low battery charging.
In embodiments of the present invention, the management module is additionally operable to determine multiple institutes based on each battery status information
State voltage in the battery battery to be balanced different from the voltage of other batteries, and generate in multiple power modules with it is described
The third control instruction of the corresponding power module of battery to be balanced, the corresponding power module of the battery to be balanced are based on described the
Three control instructions control the battery to be balanced and export equalizing voltage, so that the voltage of all batteries is consistent.
In embodiments of the present invention, the battery pack further includes display screen, and the display screen is connect with the management module,
The display screen is for showing the battery status information.
In embodiments of the present invention, the battery pack further includes host computer, and the host computer is connect with the management module,
The host computer is used to the battery status information carrying out output displaying, and/or the battery status information is transmitted to it
His device end.
Fourth embodiment
Fourth embodiment of the invention provides a kind of battery pack control method, the management module being applied in battery pack, institute
It further includes multiple batteries, multiple power modules and reduction voltage circuit to state battery pack, wherein the multiple battery is followed in series to form
General supply, each of the multiple power module power module are connect with a battery, the multiple power supply
Mould each power module in the block is connect with the management module respectively, the output end of the general supply and each electricity
Source module connects, and the output end of the general supply is connect with the input terminal of the reduction voltage circuit, the output end of the reduction voltage circuit
It is connect with the management module；The method includes：
Obtain the battery shape of the general supply battery connected that each power module obtains in electric discharge
State information；The fail battery in multiple batteries is determined based on each battery status information, and generates multiple electricity
First control instruction is sent to institute by the first control instruction of power module corresponding with the fail battery in source module
The corresponding power module of fail battery is stated, so that the corresponding power module of the fail battery is existed based on first control instruction
The both ends of the fail battery export first voltage, and export discharge current, are discharged instead of fail battery with realizing,
In, the first voltage is consistent with the voltage of other any batteries in multiple batteries in addition to the fail battery.
It should be noted that the battery pack control method that fourth embodiment of the invention provides carries for first embodiment of the invention
The control method of the corresponding battery pack of battery management system of confession, other content may refer to first embodiment of the invention offer
Battery management method, this is no longer going to repeat them.
In conclusion battery management method provided in an embodiment of the present invention, system, battery pack and its control method, the electricity
It includes management module, multiple power modules and reduction voltage circuit that pond, which manages system, wherein each power supply in multiple power modules
Module is connect with a battery, and each power module in multiple power modules is connect with management module respectively, each battery
It is followed in series to form general supply, the output end of general supply is connect with each power module, the output end and reduction voltage circuit of general supply
Input terminal connection, the output end of reduction voltage circuit connect with management module, and general supply is for management module and multiple power supplys
Module for power supply, each power module, in electric discharge, obtain the battery status information of connected battery, by battery for general supply
Status information is sent to management module, and management module is used to determine the electricity of the failure in multiple batteries based on each battery status information
Pond, and the first control instruction of power module corresponding with fail battery in multiple power modules is generated, fail battery is corresponding
Power module exports first voltage based on the first control instruction at the both ends of fail battery, and exports discharge current, to realize generation
It discharges for fail battery, wherein the voltage of first voltage and other any batteries in multiple batteries in addition to fail battery
Unanimously.The battery management system may be implemented in any battery failure in detecting multiple batteries, and power module is in failure electricity
Pond both ends export the voltage consistent with other batteries, so as to so that the voltage of the voltage and other batteries at fail battery is kept
Unanimously, battery pack is made not to be stopped because of fail battery, if solve battery in the prior art event occurs in electric discharge
When barrier, the problem of entire energy-storage system will be stopped.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, above in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of above the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is instruction or implies relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Claims (10)
1. a kind of battery management system, which is characterized in that the battery management system includes：
Management module, multiple power modules and reduction voltage circuit, wherein each of the multiple power module power supply mould
Block is connect with a battery, and each of the multiple power module power module connects with the management module respectively
It connects, each battery is followed in series to form general supply, and the output end of the general supply is connect with each power module, institute
The output end for stating general supply is connect with the input terminal of the reduction voltage circuit, the output end of the reduction voltage circuit and the management module
Connection, the general supply are used to power to the management module and the multiple power module；
Each power module is used to obtain the battery status information of the battery connected, by the battery status information
It is sent to the management module, the management module is used to determine in multiple batteries based on each battery status information
Fail battery, and generate power module corresponding with the fail battery in multiple power modules first control refer to
It enables, the corresponding power module of the fail battery exports first based on first control instruction at the both ends of the fail battery
Voltage, and discharge current is exported, it is discharged instead of the fail battery with realizing, wherein the first voltage and multiple institutes
The voltage for stating other any batteries in battery in addition to the fail battery is consistent.
2. battery management system according to claim 1, which is characterized in that the management module is additionally operable to be based on each institute
State battery status information and determine the relatively low battery of electricity in multiple batteries, and generate in multiple power modules with institute
State the second control instruction of the corresponding power module of the relatively low battery of electricity, the corresponding power module of the relatively low battery of the electricity
The first voltage is exported at the both ends of the relatively low battery of the electricity based on second control instruction, and exports discharge current
And it exports charging current and gives the electricity relatively low battery charging.
3. battery management system according to claim 1, which is characterized in that the management module is additionally operable to be based on each institute
It states battery status information and determines voltage in the multiple batteries battery to be balanced different from the voltage of other batteries, and generate
The third control instruction of power module corresponding with the battery to be balanced, the battery to be balanced in multiple power modules
Corresponding power module is based on the third control instruction and controls the battery to be balanced output equalizing voltage, so that all described
The voltage of battery is consistent.
4. battery management system according to claim 1, which is characterized in that the battery management system further includes display
Screen, the display screen are connect with the management module, and the display screen is for showing the battery status information.
5. battery management system according to claim 1, which is characterized in that the battery management system further includes upper
Machine, the host computer are connect with the management module, and the host computer is used to the battery status information carrying out output displaying,
And/or the battery status information is transmitted to other equipment terminal.
6. a kind of battery management method, which is characterized in that be applied to the management module of battery management system, the battery management system
System further includes：Multiple power modules and reduction voltage circuit, wherein each battery is followed in series to form general supply, described total
The output end of power supply is connect with each power module, and the output end of the general supply and the input terminal of the reduction voltage circuit connect
It connects, the output end of the reduction voltage circuit is connect with the management module, and the general supply is used for the management module and institute
State multiple power module power supplies；The method includes：
Obtain the battery status information for the battery connected that each power module obtains；
The fail battery in multiple batteries is determined based on each battery status information, and generates multiple power supply moulds
First control instruction is sent to the event by the first control instruction of power module corresponding with the fail battery in block
Hinder the corresponding power module of battery, so that the corresponding power module of the fail battery is based on first control instruction described
The both ends of fail battery export first voltage, and export discharge current, are discharged instead of the fail battery with realizing,
In, the first voltage is consistent with the voltage of other any batteries in multiple batteries in addition to the fail battery.
7. according to the method described in claim 6, it is characterized in that, the method further includes：
The relatively low battery of the electricity in multiple batteries is determined based on each battery status information, and is generated multiple described
Second control instruction of power module corresponding with the battery that the electricity is relatively low in power module, by second control instruction
It is sent to the corresponding power module of the relatively low battery of the electricity, so that the corresponding power module base of battery that the electricity is relatively low
Export the first voltage at the both ends of the relatively low battery of the electricity in second control instruction, and export discharge current with
And it exports charging current and gives the electricity relatively low battery charging.
8. according to the method described in claim 6, it is characterized in that, the method further includes：
It determines that the voltage in multiple batteries is different from the voltage of other batteries based on each battery status information to wait for
Balancing battery, and the third control for generating power module corresponding with the battery to be balanced in multiple power modules refers to
It enables, the third control instruction is sent to the corresponding power module of the battery to be balanced, the battery to be balanced is corresponding
Power module is based on the third control instruction and controls the battery to be balanced output equalizing voltage, so that all batteries
Voltage is consistent.
9. a kind of battery pack, which is characterized in that the battery pack includes：
Multiple batteries, management module, multiple power modules and reduction voltage circuit, wherein the multiple battery is followed in series to form
General supply, each of the multiple power module power module are connect with a battery, the multiple power supply
Mould each power module in the block is connect with the management module respectively, the output end of the general supply and each electricity
Source module connects, and the output end of the general supply is connect with the input terminal of the reduction voltage circuit, the output end of the reduction voltage circuit
It is connect with the management module, the general supply is used to power to the management module and the multiple power module；
Each power module is used to obtain the battery status information of the battery connected, by the battery status information
It is sent to the management module, the management module is used to determine in multiple batteries based on each battery status information
Fail battery, and generate power module corresponding with the fail battery in multiple power modules first control refer to
It enables, the corresponding power module of the fail battery exports first based on first control instruction at the both ends of the fail battery
Voltage, and discharge current is exported, it is discharged instead of the fail battery with realizing, wherein the first voltage and multiple institutes
The voltage for stating other any batteries in battery in addition to the fail battery is consistent.
10. a kind of battery pack control method, which is characterized in that the management module being applied in battery pack, the battery pack are also wrapped
Include multiple batteries, multiple power modules and reduction voltage circuit, wherein the multiple battery is followed in series to form general supply, described
Each of multiple power modules power module is connect with a battery, each of the multiple power module
The power module is connect with the management module respectively, and the output end of the general supply is connect with each power module,
The output end of the general supply is connect with the input terminal of the reduction voltage circuit, the output end of the reduction voltage circuit and the management mould
Block connects；The method includes：
Obtain the battery status information for the battery connected that each power module obtains；
The fail battery in multiple batteries is determined based on each battery status information, and generates multiple power supply moulds
First control instruction is sent to the event by the first control instruction of power module corresponding with the fail battery in block
Hinder the corresponding power module of battery, so that the corresponding power module of the fail battery is based on first control instruction described
The both ends of fail battery export first voltage, and export discharge current, are discharged instead of the fail battery with realizing,
In, the first voltage is consistent with the voltage of other any batteries in multiple batteries in addition to the fail battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142213.6A CN108321890A (en) | 2018-02-11 | 2018-02-11 | Battery management method, system, battery pack and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142213.6A CN108321890A (en) | 2018-02-11 | 2018-02-11 | Battery management method, system, battery pack and its control method |
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| Publication Number | Publication Date |
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| CN108321890A true CN108321890A (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810142213.6A Pending CN108321890A (en) | 2018-02-11 | 2018-02-11 | Battery management method, system, battery pack and its control method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557105A (en) * | 2009-05-19 | 2009-10-14 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| CN102280912A (en) * | 2011-06-10 | 2011-12-14 | 深圳市金威源科技股份有限公司 | Equalization circuit of charge and discharge circuit of battery pack |
-
2018
- 2018-02-11 CN CN201810142213.6A patent/CN108321890A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557105A (en) * | 2009-05-19 | 2009-10-14 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| CN102280912A (en) * | 2011-06-10 | 2011-12-14 | 深圳市金威源科技股份有限公司 | Equalization circuit of charge and discharge circuit of battery pack |
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