CN110323818A - Batteries in parallel connection system and method - Google Patents
Batteries in parallel connection system and method Download PDFInfo
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- CN110323818A CN110323818A CN201810297966.4A CN201810297966A CN110323818A CN 110323818 A CN110323818 A CN 110323818A CN 201810297966 A CN201810297966 A CN 201810297966A CN 110323818 A CN110323818 A CN 110323818A
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- batteries
- battery
- parallel connection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention discloses a kind of batteries in parallel connection system.The system comprises the multiple battery blocks being connected in parallel with each other, and battery block includes battery module, and the battery equilibrium module being connected in series with battery module；Battery equilibrium module includes the first circuit, second circuit and detection circuit；First circuit includes main switch, and second circuit is connect with the first circuit in parallel, and second circuit includes the current limliting auxiliary switch and current limiting component being connected in series；Detection circuit is separately connected the first circuit and second circuit, and whether detection circuit is to detect current limiting component with the presence of electric current；Wherein, in balancing run, current limiting switch conducting, main switch shutdown, so that the balance of voltage then exports when detection circuit detection current limiting component no current presence and control signal to control main switch conducting multiple battery modules each other.Batteries in parallel connection system and method provided by the present invention can reduce a possibility that battery temperature increases extremely, and then can ensure that the service life of battery.
Description
Technical field
The present invention relates to a kind of batteries in parallel connection system and methods, have active administrative mechanism in parallel more particularly to one kind
Batteries in parallel connection system and method.
Background technique
The battery weight of existing high power battery group is very restricted transport, therefore small power electric can be used
Pond module obtains required high power battery module by combination, to solve transportation problem, while meeting the city of multiplicity
Field demand.
However, according to electrical characteristic, it is low that electric current can flow to voltage from the high battery of voltage when two battery pack parallel connections
Battery can generate high current, and component may be caused impaired, in some instances it may even be possible to cause quick-fried with spark if voltage has a long way to go
It is fried.
Further, since the manufacturing variation or battery of battery are in the difference generated after using, multiple batteries in parallel
The current imbalance that can be provided generates current imbalance value.This current imbalance value will cause battery temperature and rise extremely
Height, and then affect the service life of battery.
It is, therefore, desirable to provide being avoided that high current generates, and the apparatus and method of purpose in parallel can be reached.
Summary of the invention
Technical problem to be solved by the present invention lies in, provide in view of the deficiencies of the prior art a kind of batteries in parallel connection system and
Method.
In order to solve the above technical problems, a wherein technical solution of the present invention is to provide a kind of electricity in parallel
Cell system, the batteries in parallel connection system include: multiple battery blocks, are connected in parallel with each other, and multiple battery blocks respectively include:
One battery module；And a battery equilibrium module, it is connected in series with the battery module, the battery equilibrium module includes: one
First circuit, including a main switch；One second circuit is connect with first circuit in parallel, and the second circuit includes series connection
A current limliting auxiliary switch and a current limiting component for connection；And a detection circuit, it is separately connected first circuit and described second
Circuit, whether the detection circuit is to detect the current limiting component with the presence of electric current, wherein in a balancing run, the limit
Stream switch default configuration is conducting, and the main switch default configuration is shutdown, so that voltage is flat each other for multiple battery modules
Weighing apparatus exists when the detection circuit detects the current limiting component no current, then exports a control signal to control the main switch
Conducting.
Preferably, the multiple detection circuit respectively includes: an operational amplifier, is configured to the current limiting component both ends
Voltage difference amplification；And a comparator, one first output end and one of operational amplifier described in comparison is configured to reference to electricity
Voltage difference between pressure, and a second output terminal of the comparator is connected to a control terminal of the main switch, wherein if institute
The voltage difference for stating current limiting component both ends is 0, then the comparator exports the control signal to control the main switch conducting.
Preferably, multiple battery modules respectively correspond to a display module, and multiple battery modules are configured to root
An equilibrium state of multiple battery modules is shown according to the control signal.
Preferably, the batteries in parallel connection system a further include: load passes through a control switch and multiple battery blocks
It is in parallel；And one and door, second input terminal that each comparator is connected to door multiple input terminals, it is described with
One output end of door is connected to a control terminal of the control switch, wherein the control switch be configured to receive it is described
It is connected when with an output signal of door.
Preferably, the batteries in parallel connection system further includes a power management interface, is connected to multiple battery areas
Block, a load and a power supply, wherein the power management interface is configured to according to multiple battery blocks one for electric energy
Power adjusts a power supply ratio of the power supply, to the load discharge.
In order to solve the above technical problems, an other technical solution of the present invention is to provide a kind of electricity in parallel
Pond method, the batteries in parallel connection method include:
Multiple battery blocks are configured to be connected in parallel with each other, multiple battery blocks respectively include a battery module and with it is described
The concatenated battery equilibrium module of battery module, each battery equilibrium module include: one first circuit, including a main switch；
One second circuit is connect with first circuit in parallel, the second circuit include be connected in series a current limliting auxiliary switch and
One current limiting component；And a detection circuit, it is separately connected first circuit and the second circuit, the detection circuit is to examine
The current limiting component is surveyed whether with the presence of electric current；Configuration is connected to each battery equilibrium module and carries out a balancing run, described
Main switch default shutdown, current limliting auxiliary switch default conducting, so that multiple battery modules balance of voltage each other；And
It configures each detection circuit and whether detects each current limiting component with the presence of electric current, if it is not, the then detection circuit output one
Control signal is to control the main switch conducting.
Preferably, it configures each detection circuit and detects the step of whether current limiting component is with the presence of electric current further include:
An operational amplifier is configured to amplify the voltage difference at the current limiting component both ends；And one comparator of configuration is with the fortune
The voltage difference between one first output end and a reference voltage of amplifier is calculated, wherein if the voltage difference at the current limiting component both ends
It is 0, then configures the comparator from the control terminal that a second output terminal is connected to the main switch and export the control signal
To a control terminal of the main switch, to control the main switch conducting.
Preferably, the batteries in parallel connection method further includes configuring the corresponding display module of each battery module with basis
The control signal shows an equilibrium state of each battery module.
Preferably, the batteries in parallel connection method a further include: load or a power supply are passed through into a control switch and multiple institutes
It is in parallel to state battery block；One is connected to multiple input terminals of door second input terminal of each comparator, it is described with
One output end of door is connected to a control terminal of the control switch；And the configuration control switch with receive it is described with
It is connected when one output signal of door.
Preferably, the batteries in parallel connection method further include: multiple batteries are connected to a power management interface
Block, a load and a power supply；And the power management interface is configured with one according to multiple battery blocks for electric energy
Power adjusts a power supply ratio of the power supply, to the load discharge.
A wherein beneficial effect of the invention is that batteries in parallel connection system and method provided by the present invention can be by " main
The technical solution of dynamic formula battery equilibrium framework ", each battery module are not required to communicate each other, are also not required to that additional controller is arranged, i.e.,
It may achieve balance, to avoid voltage difference away from excessive caused super-high-current problem, the extremely raised possibility of battery temperature can be reduced
Property, and then can ensure that the service life of battery.
It is of the invention wherein another advantage is that, batteries in parallel connection system and method provided by the present invention can pass through
" display module shows whether batteries in parallel connection system reaches equilibrium state ", judges whether each battery module can total power for user
Charge/discharge.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and schema, however provided schema is merely provided for reference and description, is not intended to limit the present invention.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, however provided attached drawing is merely provided for reference and description, is not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is the block diagram of the batteries in parallel connection system of first embodiment of the invention.
Fig. 2 is the enlarged drawing of the battery block A of the batteries in parallel connection system of first embodiment of the invention.
Fig. 3 A is the circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention.
Fig. 3 B is another circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention.
Fig. 3 C is another circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention.
Fig. 4 is the flow chart of the batteries in parallel connection method of the third embodiment of the present invention.
Fig. 5 is the flow chart of the batteries in parallel connection method of the fourth embodiment of the present invention.
Specific embodiment
It is to illustrate presently disclosed related " batteries in parallel connection system and method " by particular specific embodiment below
Embodiment, those skilled in the art can understand advantages of the present invention and effect by content disclosed in this specification.This hair
Bright to be implemented or be applied by other different specific embodiments, the various details in this specification may be based on different sights
Point and application, carry out various modifications and change in the case where not departing from design of the invention.In addition, attached drawing of the invention only simply shows
Meaning explanation is stated in advance not according to the description of actual size.Phase of the invention will be explained in further detail in the following embodiments and the accompanying drawings
Close technology contents, but the protection scope that disclosure of that is not intended to limit the invention.
It should be understood that although various assemblies or signal may be described using term first, second, third, etc. herein,
But these components or signal should not be limited by these terms.These terms are mainly to distinguish a component and another group
Part or a signal and another signal.In addition, term "or" used herein, should may include correlation depending on actual conditions
Connection lists any of project or multiple combinations.
In order to get across, in some cases, this technology can be rendered as including the separate functional blocks comprising functional block,
Step or routing or the combination of hardware and software in method comprising implementation in device, device assembly, software.
Implement to may include hardware, firmware and/or software according to the device of these inventive methods, and can take any each
Kind body.The typical example of this body includes laptop, smart phone, small sized personal computer, personal digital assistant
Etc..The function being described herein also can be implemented in peripheral equipment or internal card.By further illustrating, this function can also be with
Implement different chips or on single device the distinct program of execution circuit board.
The instruction, for transmitting such medium of instruction, the computing resource for executing it or for as supporting
The other structures of computing resource are for for providing the means of the function described in the invention.
First embodiment
Refering to Figure 1, Fig. 1 is the block diagram of the batteries in parallel connection system of first embodiment of the invention.As shown, simultaneously
Connection battery system 1 include multiple battery block A, B ..., N be connected in parallel with each other, and respectively include battery module 10A, 10B ...,
10N, respectively with battery equilibrium module 12A, 12B ..., 12N be connected in series.In order to avoid occurring excessive electric current when charge and discharge,
Battery module 10A, 10B ..., the battery component of 10N can it is appropriate by battery equilibrium module 12A, 12B ..., the behaviour of 12N
Make so that battery module 10A, 10B in parallel ..., maintain voltage's distribiuting appropriate between 10N.At of the invention one or more
In a embodiment, battery block A, B ..., N may respectively be battery pack, battery module 10A, 10B ..., 10N may respectively be battery core,
The quantity of series/parallel can be adjusted according to demand.Operation battery equilibrium module 12A, 12B ..., 12N exists with suitably managing electric current
Battery module 10A, 10B ..., the flowing between 10N, charge and discharge can be carried out with electric current appropriate.
Battery module 10A, 10B ..., 10N can be each provided with multiple battery components, each of multiple battery components is for example
The secondary cells such as lithium ion battery or lead battery, according to battery equilibrium module 12A, 12B ..., the on state of 12N, and determine
It is fixed whether to be charged with the electric power of power supply, or make the electric power being accumulated in each battery component as needed to load into
Row electric discharge.
It should be noted that battery equilibrium module 12A, 12B of the present invention ..., 12N be active balancing, and in order to meet not
With application, battery module 10A, 10B ..., 10N do not have communication characteristic each other, also without configuring additional controller.It changes
Yan Zhi, battery module 10A, 10B ..., 10N can not learn mutual charged state message, including voltage, electric current or remaining capacity
Deng.
Therefore, under the premise of herein, battery equilibrium module 12A, 12B ..., 12N is only capable of by detecting itself corresponding battery
Module 10A, 10B ..., the electrical property of 10N carry out the active balance of voltage, detail will be illustrated referring to Fig. 2.
It referring to figure 2., is the enlarged drawing of the battery block A of the batteries in parallel connection system of first embodiment of the invention.Herein, will
Running for battery equilibrium module 12A and battery module 10A is illustrated.
As shown, battery equilibrium module 12A includes the first circuit 120A, second circuit 122A and detection circuit
124A.First circuit 120A includes main switch MSA, and second circuit 122A is connected in parallel with the first circuit 120A, second circuit
122A includes the current limliting auxiliary switch PSA and current limiting component RA being connected in series.As main switch MSA and current limliting auxiliary switch PSA,
Relay or power semiconductor switch etc. can be used to constitute.In the present embodiment, using as main switch MSA and current limliting
Auxiliary switch PSA is illustrated in case where having used switching transistor.
Detection circuit 124A, is separately connected the first circuit 120A and second circuit 122A, and detection circuit 124A is mainly used for
Current limiting component RA is detected whether with the presence of electric current, and whether the voltage difference for detecting the both ends current limiting component RA is in a preset range
It is interior.Specifically, when battery module 10A, 10B ..., 10N lead to voltage difference because of self discharge effect or processing procedure difference each other when,
If you need to carry out charge and discharge, it probably can generate excessive electric current between the biggish battery module of voltage differences and cause component impaired or electricity
Pond temperature anomaly increases.
Therefore, operation can be balanced while costing power supply or load carries out charge and discharge.In this balancing run,
Current limliting auxiliary switch PSA can be set as being connected by the initial setting of installation or human configuration, and main switch MSA is set to off
It is disconnected.Specifically, battery module 10A, 10B ..., 10N load can be powered at any time, when the electricity between battery module
The different diminution of pressure difference.When voltage difference or the magnitude of current are reduced to safe range, detection circuit 124A can control signal control main switch
MSA enters on state, carries out charge and discharge with biggish electric current or power.
On the other hand, this control signal also can be used for carrying out the control of main switch.For example, when balancing run is completed
It is reconfigured main switch conducting, it can be ensured that charge and discharge are carried out with total power, this part will further illustrate below.Current limliting auxiliary
Switch PSA substantially maintains conducting, removes in the system of installing, leads current limliting auxiliary switch PSA using manual button operation
It is logical, if when battery module 10A brownout starting protection mechanism and turn off, when reusing, it is still desirable to be made by manual pushbutton
Current limliting auxiliary switch PSA restores conducting.
Second embodiment
Fig. 3 A is please referred to, Fig. 3 A is the circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention.The present embodiment
Framework provided by first embodiment will be continued and carry out further description.As shown, the master in the first circuit 120A opens
The current limliting auxiliary switch PSA closed in MSA and second circuit 122A uses semiconductor switch, such as MOSFET, and current limiting component RA is adopted
Use resistance.It should be specified, detection circuit 124A includes operational amplifier AMP and comparator COMP, operational amplifier AMP
First input end IN11 and the second input terminal IN12 be separately connected the both ends of current limiting component RA, in battery module 10A and its
His battery module 10B ..., in the balancing run of 10N, voltage difference is amplified, and is exported by output end OUT1 to comparator
The second input terminal IN22 of COMP.The first input end IN21 of comparator COMP then inputs a reference voltage Vref, and output end
OUT2 is connected to the control terminal of main switch MSA, and it is predetermined whether the voltage difference that can determine whether the both ends current limiting component RA is located at by this configuration
In range, for example, whether voltage difference is 0, and this comparison result is corresponded to, output one is controlled signal control master and opened by comparator COMP
Close MSA on or off.
This embodiment is only one of example of detection circuit 124A, and any detectable second circuit 122A also can be used
The circuit framework of the upper magnitude of current or voltage change to judge whether battery module 10A has reached balance, and is not limited to the present embodiment institute
The framework of use.
Each current limiting switch, such as before current limliting auxiliary switch PSA, Yu Jinhang charge and discharge is electrically operated, it is defaulted as on state, due to
Each battery equilibrium module 12A, 12B ..., the main switch of 12N, such as main switch MSA by installing initial setting, or manually matches
Be set to off state, each battery module 10A, 10B ..., 10N by respectively by each second circuit 122A ..., 122N carry out it is flat
Weighing apparatus.At this point, each battery module 10A, 10B ..., 10N be not required to communication each other under the premise of, detection circuit 124A ..., 124N can
Whether measured current has reached balance, that is to say, that by the configuration of operational amplifier AMP and comparator COMP, judges current limliting group
Whether the voltage at the both ends part RA is 0.It if 0, then represents and has reached balance, then export control signal control main switch MSA conducting.
In addition, the load RL of the present embodiment and battery block A, B ..., N parallel, when the voltage difference at the both ends current limiting component RA
In preset range, for example, when voltage difference is 0, the control signal of corresponding output can control corresponding battery module 10A with the
One circuit 120A as guiding path, and to load RL electric discharge, meanwhile, remaining using second circuit 122B ..., 122N as be connected
The battery module 10B in path ..., 10N still will continue to be balanced, move closer to voltage.On the other hand, user is depended on
Demand, also can with power supply and battery block A, B ..., N parallel, and be balanced operation while charging.In this isotype
Under, though do not guarantee can total power charge and discharge, can make the user for having power demand that can use immediately.
In addition, battery equilibrium module 12A, 12B ..., 12N be also respectively connected with display module 18A, 18B ..., 18N, point
Not Dui Yingyu battery module 10A, 10B ..., 10N, display module 18A, 18B ..., 18N can according to control signal show multiple electricity
Pond module 10A, 10B ..., the equilibrium state of 10N.For example, display module 18A, 18B ..., 18N can respectively include LED indication
Lamp, when multiple battery module 10A, 10B ..., 10N still have voltage difference each other, and the first circuit 120A is not turned on or second
Circuit 122A has still been detected in the presence of electric current, and the LED light of display module 18A is shown not up to equilibrium state, for example, red
Lamp, and when there is electric current to flow through the first circuit 120A, the LED light of display module 18A, which can be shown, reaches equilibrium state, example
Such as, green light.Whether this equilibrium state may be used to indicate can total power charge and discharge, it is not necessary to artificial equilibrium.
Active battery balancing stand structure through this embodiment, each battery module are not required to communicate each other, that is, may achieve balance,
To avoid voltage difference away from excessive caused super-high-current problem, a possibility that battery temperature increases extremely can be reduced, and then can be true
Protect the service life of battery.
It is another circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention please referring in addition to Fig. 3 B.This implementation
Example will carry out further description on the basis of Fig. 3 A embodiment.It is similar, main switch MSA in the first circuit 120A and
Current limliting auxiliary switch PSA in second circuit 122A uses semiconductor switch, such as MOSFET, and current limiting component RA uses resistance.
Detection circuit 124A includes operational amplifier AMP and comparator COMP, this configuration will can determine whether current limiting component RA two
Whether the voltage difference at end is located in preset range, for example, whether voltage difference is 0, and corresponds to this comparison result, and comparator COMP will
One control signal of output controls main switch MSA on or off.
As shown, battery block A, B of multiple parallel connections ..., N with one load RL connect, and each detection circuit 124A,
124B ..., 124N is connected to multiple input terminals with door 126, and connect the control of control switch T1 with the output end of door 126
End.Specifically, this embodiment is mainly carried out under no external power supply.In order to ensure system is put in electric discharge for total power
Electricity, can by this configure, when all battery module 10A, 10B ..., 10N reach balance each other when, each detection circuit 124A,
124B ..., 124N other comparator COMP will respectively output control signal make corresponding first circuit 120A, 120B ...,
120N conducting, meanwhile, all control signals are received with door 126, for example, will separately export one with door 126 when being high voltage
Control switch T1 is connected in high voltage.Though being put once control switch T1 is connected to load RL in this way, system can not power at any time
When electric, it will can ensure that as total power output.
It is another circuit arrangement map of the batteries in parallel connection system of second embodiment of the invention please referring in addition to Fig. 3 C.This example
For illustrating the discharge mode of batteries in parallel connection balance system 1, as shown, battery block A, B of multiple parallel connections ..., N more passes through
One power management interface EMS is connect with a load RL, meanwhile, this framework can allow other power source bodies, such as power grid.Citing and
Speech can allow and be connected to the accessory power supply 140 of power management interface EMS, and be controlled with power management interface EMS to supply not
Sufficient power.
Specifically, when user's discharge operation to be carried out, and battery equilibrium module 12A, 12B ..., 12N and battery
Module 10A, 10B ..., 10N still when being balanced, current limliting auxiliary switch PSA is still on state.At this point, power management
Interface EMS detect battery block A, B ..., the power supply capacity of N do not reach predetermined power, for example, only reaching predetermined power
10%, start to output current to load RL at this point, power management interface EMS will control accessory power supply 140, to supply predetermined function
The 90% of rate.On the other hand, or can by accessory power supply 140 to each battery module 10A, 10B ..., 10N charges.Battery mould
Block 10A, 10B ..., 10N can be balanced operation simultaneously in charging operations or discharge operation.At this point, due to each battery equilibrium
Module 12A, 12B ..., the main switch of 12N, such as main switch MSA, default configuration are off state, each battery module 10A,
10B ..., 10N by respectively by each second circuit 122A ..., 122N is balanced.At this point, each battery module 10A,
10B ..., under the premise of 10N is not required to communication each other, detection circuit 124A ..., 124N can measured current whether reached balance, also
That is, passing through the configuration of operational amplifier AMP and comparator COMP, judge whether the voltage at the both ends current limiting component RA is 0.If 0,
Then represent and reached balance, then export control signal control main switch MSA conducting, when battery module 10A, 10B ..., 10N can be complete
Power versus load RL electric discharge, power management interface EMS detect battery block A, B ..., the power supply capacity of N arrived predetermined function
Rate, power management interface EMS will control the stopping of accessory power supply 140 and output current to load RL.
Specifically, during charge and discharge, when can still be balanced operation simultaneously, when current limliting auxiliary switch PSA is connected, by
Power management interface EMS accesses accessory power supply 140, and when main switch MSA conducting, then second circuit no current exists or only deposits
In minimum electric current, power management interface EMS is corresponding to cut off accessory power supply 140.Under this arrangement, it can be not required to that control is additionally arranged
Device processed, and in this parallel system, according to above-mentioned electrical characteristic, second circuit 122A existing for limited leakage resistance RA does not have electric current
In the presence of.
It is similar, user also can by multiple display module 18A, 18B ..., 18N learn the flat of batteries in parallel connection system 1
Weighing apparatus state.When multiple battery module 10A, 10B ..., 10N still have voltage difference each other, and the first circuit 120A is not turned on, or
Second circuit 122A has still been detected in the presence of electric current, and the LED light of display module 18A is shown not up to equilibrium state, example
Such as, red light, and when there is electric current to flow through the first circuit 120A, the LED light of display module 18A, which can be shown, reaches equilibrium-like
State, for example, green light.Whether this equilibrium state may be used to indicate can total power electric discharge.
Active battery balancing stand structure through this embodiment, each battery module are not required to communicate each other, that is, may achieve balance,
To avoid voltage difference away from excessive caused super-high-current problem, a possibility that battery temperature increases extremely is reduced, and then can ensure that
The service life of battery.
3rd embodiment
It will be described in detail with reference to accompanying drawings batteries in parallel connection method of the invention below.In the present embodiment, batteries in parallel connection balances
It is primarily adapted for use in first embodiment and second embodiment, but not limited to this, it is contemplated that in fields tool usually intellectual
Under mode or various possibilities, method provided in this embodiment is also applicable to any embodiment described above.
In addition, implementing according to the device of these inventive methods to may include hardware, firmware and/or software, and can take
Any various bodies.Functions described herein also can be implemented in peripheral equipment or internal card.By further illustrating, this function
The circuit board in different chips or the distinct program executed on single device can also can be implemented.
Referring to FIG. 4, the flow chart of the batteries in parallel connection method for the third embodiment of the present invention.As shown, this implementation
Example batteries in parallel connection method the following steps are included:
Step S100: multiple battery blocks are configured and are connected in parallel with each other.Battery block respectively includes battery module, and with electricity
The battery equilibrium module of pond block coupled in series.Can refer to Fig. 1, shown in 2, battery equilibrium module include the first circuit, second circuit and
Detection circuit, the first circuit include main switch, and second circuit is connect with the first circuit in parallel, and second circuit includes being connected in series
Current limliting auxiliary switch and current limiting component, detection circuit are separately connected the first circuit and second circuit, are for detecting current limiting component
It is no with the presence of electric current.Wherein, the concrete configuration of the first circuit, second circuit and detection circuit is in being outlined above, therefore omits
Repeated description.
Step S101: configuration is connected to each battery equilibrium module and is balanced operation.Specifically, it can enter step
S102, main switch default shutdown, current limliting auxiliary switch default conducting, so that multiple battery modules balance of voltage each other.
Step S103: configuring each detection circuit and whether detect each current limiting component with the presence of electric current, each battery module each other
Under the premise of being not required to communication, detection circuit, which can be used, any can independently detect the magnitude of current or the circuit of voltage change on second circuit
Framework, to judge whether power module has reached balance.
If detection circuit judges that current limiting component still with the presence of electric current, represents not up to balance, then enters step in step S103
Rapid S104, configuration main switch maintain off state.
If detection circuit judges current limiting component no current presence or current limiting component both ends no-voltage in step S103
Difference, representative have reached balance, then enter step S105, output control signal is to control main switch conducting.
Optionally, after step S104 and step S105, S106 can be entered step, is shown by multiple display modules
Show the equilibrium state of batteries in parallel connection system 1.When multiple battery module 10A, 10B ..., 10N still have a voltage difference each other, and the
One circuit 120A is not turned on or second circuit 122A has still been detected in the presence of electric current, and the LED light of display module is shown
Equilibrium state is not reached, for example, red light, and when there is electric current to flow through the first circuit, the LED light of display module, which can be shown, to be reached
Equilibrium state, for example, green light.Whether this equilibrium state may be used to indicate can total power charge/discharge.
In this embodiment, user can carry out charge and discharge using batteries in parallel connection system at any time, only not be ensured to be full function
Rate.Though however, under the situation that main switch is off or is connected, executable step S107, configure the power management interface with
Power supply capacity according to multiple battery blocks adjusts the power supply ratio of the power supply.For example, it is connected in part main switch,
Under the situation of part main switch shutdown, the power supply capacity of power management Interface detection to battery module does not reach predetermined power, for example,
The 10% of predetermined power is only reached, starts to output current to load at this point, power management interface will control accessory power supply, to mend
The 90% of sufficient predetermined power also can simultaneously charge to each battery module with accessory power supply.Alternatively, power management Interface detection
Power supply capacity to battery module arrived predetermined power, and power management interface will control accessory power supply stopping and output current to
Load.In addition, further returning to step S103 after step S107, whether current limiting component is persistently detected with the presence of electric current.
It will be described in detail in fourth embodiment with the detailed step of detection circuit detection current limiting component.
Fourth embodiment
It will be described in detail with reference to accompanying drawings batteries in parallel connection method of the invention below.Referring to FIG. 5, real for the of the invention the 4th
Apply the flow chart of the batteries in parallel connection method of example.
As shown in figure 5, step S102 is first carried out: main switch default shutdown, the default conducting of current limliting auxiliary switch make multiple
The battery module balance of voltage each other.Semiconductor can be used in the current limiting switch in main switch and second circuit in first circuit
Switch, such as MOSFET, and current limiting component uses resistance.It should be specified, detection circuit further comprises operational amplifier
And comparator.
Step S103 ': the first input end of operational amplifier and the second input terminal are separately connected the both ends through current limiting component,
Voltage difference to be amplified, and is exported by output end to comparator in the balancing run of battery module and other battery modules
The second input terminal.
Step S104 ': the first input end input reference voltage of comparator, and output end is connected to the control of main switch
End, this is configured the voltage difference at comparable current limiting component both ends.
Step S105 ': under the state of current limliting auxiliary switch conducting, comparator and operational amplifier are configured, to judge to limit
Whether the voltage difference at stream component both ends is located in preset range, for example, whether voltage difference is 0.
And this comparison result is corresponded to, if the voltage difference at current limiting component both ends is 0, represents and reached balance, enter step
Output control signal control main switch is connected for S107 ', comparator.
If the voltage difference at current limiting component both ends is not 0, represents not up to balance, enter step S106 ', configuration main switch dimension
Hold shutdown.And after step S106 ', S105 ' can be returned to, persistently judges whether the voltage difference at current limiting component both ends is 0.
Optionally, can be in parallel with multiple battery blocks by control switch by load similar to the embodiment of Fig. 3 B, and
One and door are provided, referring to FIG. 5, multiple input terminals of this and door are connected to the second input terminal of each comparator, and this and door
Output end be connected to the control terminal of control switch, S108 ' can be entered step after step S107 ', this can determine whether institute with door
Whether some battery modules are using the first circuit as guiding path, also that is, being judged by the control signal received all
Whether main switch is connected, if so, entering step S109 ', configuration, which exports an output signal with door, is connected control switch.Such as
This when control switch is connected to load discharge, will can ensure that as total power output though system can not power at any time.If
In step S108 ', and not all main switch is both turned on, then returns to step S105 ', persistently judges the electricity at current limiting component both ends
Whether pressure difference is 0.
Active battery equiulbrium flow journey through this embodiment, each battery module are not required to communicate each other, that is, may achieve balance,
To avoid voltage difference away from excessive caused super-high-current problem, a possibility that battery temperature increases extremely can be reduced, and then can be true
Protect the service life of battery.
In addition, can show whether batteries in parallel connection system reaches equilibrium state by display module, so that user judges each electricity
Whether pond module can total power charge/discharge.
Content disclosed above is only preferred possible embodiments of the invention, not thereby limits to right of the invention and wants
The protection scope of book is sought, so all equivalence techniques variations done with description of the invention and accompanying drawing content, are both contained in
In the protection scope of claims of the present invention.
Claims (10)
1. a kind of batteries in parallel connection system, which is characterized in that the batteries in parallel connection system includes: multiple battery blocks, is connected in parallel to each other
Connection, multiple battery blocks respectively include:
One battery module；And
One battery equilibrium module, is connected in series with the battery module, and the battery equilibrium module includes:
One first circuit, including a main switch；
One second circuit is connect with first circuit in parallel, and the second circuit includes that the current limliting auxiliary being connected in series is opened
Pass and a current limiting component；And
One detection circuit is separately connected first circuit and the second circuit, and the detection circuit is to detect the limit
Whether flow component with the presence of electric current,
Wherein in a balancing run, the current limiting switch default configuration is conducting, and the main switch default configuration is shutdown, with
Make multiple battery modules balance of voltage each other, exists when the detection circuit detects the current limiting component no current, then it is defeated
A control signal is out to control the main switch conducting.
2. batteries in parallel connection system according to claim 1, which is characterized in that the multiple detection circuit respectively includes:
One operational amplifier is configured to amplify the voltage difference at the current limiting component both ends；And
One comparator, the voltage being configured between one first output end and a reference voltage of operational amplifier described in comparison
Difference, and a second output terminal of the comparator is connected to a control terminal of the main switch,
If wherein the voltage difference at the current limiting component both ends is 0, it is described to control that the comparator exports the control signal
Main switch conducting.
3. batteries in parallel connection system according to claim 2, which is characterized in that it is aobvious that multiple battery modules respectively correspond to one
Show module, multiple battery modules are configured to show an equilibrium-like of multiple battery modules according to the control signal
State.
4. batteries in parallel connection system according to claim 2, which is characterized in that the batteries in parallel connection system further include:
One load, it is in parallel with multiple battery blocks by a control switch；And
One and door, second input terminal that each comparator is connected to door multiple input terminals is described with door
One output end is connected to a control terminal of the control switch,
Wherein the control switch be configured to receive it is described with an output signal of door when be connected.
5. batteries in parallel connection system according to claim 1, which is characterized in that the batteries in parallel connection system further includes a power supply
Administration interface is connected to multiple battery blocks, a load and a power supply, wherein the power management interface is configured
The power supply ratio that the power supply is adjusted with the power supply capacity according to multiple battery blocks, to the load discharge.
6. a kind of batteries in parallel connection method, which is characterized in that the batteries in parallel connection method includes:
Multiple battery blocks are configured to be connected in parallel with each other, multiple battery blocks respectively include a battery module and with the battery
One battery equilibrium module of block coupled in series, each battery equilibrium module include:
One first circuit, including a main switch；
One second circuit is connect with first circuit in parallel, and the second circuit includes that the current limliting auxiliary being connected in series is opened
Pass and a current limiting component；And
One detection circuit is separately connected first circuit and the second circuit, and the detection circuit is for detecting the limit
Whether component is flowed with the presence of electric current；
Configuration is connected to each battery equilibrium module and carries out a balancing run, and the main switch default turns off, and the current limliting is auxiliary
Switch default conducting is helped, so that multiple battery modules balance of voltage each other；And
It configures each detection circuit and detects each current limiting component whether with the presence of electric current, if it is not, then the detection circuit is defeated
A control signal is out to control the main switch conducting.
7. batteries in parallel connection method according to claim 6, which is characterized in that each detection circuit of configuration detects the limit
Flow the step of whether component is with the presence of electric current further include:
An operational amplifier is configured to amplify the voltage difference at the current limiting component both ends；And
A comparator is configured with the voltage difference between one first output end of the operational amplifier and a reference voltage,
If wherein the voltage difference at the current limiting component both ends is 0, the comparator is configured from a second output terminal and is connected to institute
The control terminal for stating main switch exports the control signal to a control terminal of the main switch, is led with controlling the main switch
It is logical.
8. batteries in parallel connection method according to claim 6, which is characterized in that the batteries in parallel connection method further includes that configuration is each
The corresponding display module of the battery module is to show an equilibrium state of each battery module according to the control signal.
9. batteries in parallel connection method according to claim 7, which is characterized in that the batteries in parallel connection method further include:
One load or a power supply is in parallel with multiple battery blocks by a control switch；
One is connected to multiple input terminals of door second input terminal of each comparator, the output end with door
It is connected to a control terminal of the control switch；And
Configure the control switch with receive it is described with an output signal of door when be connected.
10. batteries in parallel connection method according to claim 7, which is characterized in that the batteries in parallel connection method further include:
Multiple battery blocks, a load and a power supply are connected to a power management interface；And
Configure the confession that the power management interface adjusts the power supply with the power supply capacity according to multiple battery blocks
Electric ratio, to the load discharge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810297966.4A CN110323818A (en) | 2018-03-30 | 2018-03-30 | Batteries in parallel connection system and method |
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| CN201810297966.4A CN110323818A (en) | 2018-03-30 | 2018-03-30 | Batteries in parallel connection system and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201138267A (en) * | 2010-04-23 | 2011-11-01 | Neoton Optoelectronics Corp | Current balancing device for parallel batteries and controlling method thereof |
| US20120313439A1 (en) * | 2010-02-08 | 2012-12-13 | Sanyo Electric Co., Ltd. | Power source apparatus |
| CN103516043A (en) * | 2012-06-26 | 2014-01-15 | 华为技术有限公司 | Power switching control signal generation circuit, and system method for dual-power redundancy power supplying |
| CN104247198A (en) * | 2013-03-29 | 2014-12-24 | 三洋电机株式会社 | Power supply system and charging and discharging control method for power supply system |
| CN204441937U (en) * | 2015-01-28 | 2015-07-01 | 安徽师范大学 | Multi-channel parallel lithium battery group management control device |
-
2018
- 2018-03-30 CN CN201810297966.4A patent/CN110323818A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120313439A1 (en) * | 2010-02-08 | 2012-12-13 | Sanyo Electric Co., Ltd. | Power source apparatus |
| CN104393641A (en) * | 2010-02-08 | 2015-03-04 | 三洋电机株式会社 | Power source apparatus |
| TW201138267A (en) * | 2010-04-23 | 2011-11-01 | Neoton Optoelectronics Corp | Current balancing device for parallel batteries and controlling method thereof |
| CN103516043A (en) * | 2012-06-26 | 2014-01-15 | 华为技术有限公司 | Power switching control signal generation circuit, and system method for dual-power redundancy power supplying |
| CN104247198A (en) * | 2013-03-29 | 2014-12-24 | 三洋电机株式会社 | Power supply system and charging and discharging control method for power supply system |
| CN204441937U (en) * | 2015-01-28 | 2015-07-01 | 安徽师范大学 | Multi-channel parallel lithium battery group management control device |
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Application publication date: 20191011 |