CN109274149A - Electric flux switching equipment, cell apparatus and battery maintenance system - Google Patents
Electric flux switching equipment, cell apparatus and battery maintenance system Download PDFInfo
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- CN109274149A CN109274149A CN201811160545.3A CN201811160545A CN109274149A CN 109274149 A CN109274149 A CN 109274149A CN 201811160545 A CN201811160545 A CN 201811160545A CN 109274149 A CN109274149 A CN 109274149A
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- 230000004907 flux Effects 0.000 title claims abstract description 87
- 238000012423 maintenance Methods 0.000 title claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 12
- 230000005012 migration Effects 0.000 description 8
- 238000013508 migration Methods 0.000 description 8
- 238000002955 isolation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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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
- H01M10/425—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
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of electric flux switching equipment, cell apparatus and battery maintenance systems.Electric flux switching equipment includes: charge and discharge bus, including the first port for connecting external charging equipment；Power Exchange bus, including the second port for carrying out Power Exchange with external power equipment；Single battery bidirectional equalization array has multiple single battery bidirectional equalization modules；Each single battery bidirectional equalization module with a single battery for connecting；Single battery charge-discharge modules, third port are connect with charge and discharge bus；4th port with the both ends of any one single battery in battery pack for connecting；Battery set charge/discharge module, fifth port can selectively be connect with charge and discharge bus or Power Exchange bus；6th port with the both ends of battery pack for connecting；And power switching modules, it is connected between charge and discharge bus and battery pack.Above-mentioned electric flux switching equipment can complete the reparation to battery pack, improve the service efficiency of battery.
Description
Technical field
The present invention relates to battery maintenance technical fields, more particularly to a kind of electric flux switching equipment, cell apparatus and electricity
Pond maintenance system.
Background technique
With the development of new energy technology, multiple fields have been goed deep into the application of power battery and energy-storage battery.Power electric
Battery pack in pond or energy-storage battery is in each single battery for after charge and discharge use after a period of time, forming battery pack
It will appear certain capacity volume variance.If correcting these differences not in time, the whole charge and discharge cycles energy of battery pack can be quick
Decline, and may cause the security risk of battery pack.Practice have shown that series connection in groups after battery pack cycle life relative to
The cycle life that each single battery of composition battery pack is nominal can generally decline 30%-50%.It is general in the industry for this phenomenon
Online local charge and discharge are carried out to keep battery pack to single battery all over the technology by referred to as battery balanced (or balance)
The Capacity uniformity of internal cell.Traditional battery system is integrated with battery balanced in internal battery management automated system
Technology, but the scheme for being mostly used the ability of equalization weaker greatly by space, cost and reliability effect, these systems, this equilibrium
Portfolio effect it is poor, when portfolio effect is unable to satisfy the use demand of battery, the overall performance of battery pack will will receive shadow
It rings, the utilization rate of battery is caused to reduce.
Summary of the invention
Based on this, it is necessary to be limited for traditional battery system portfolio effect in use by objective factor, cause to make
The problem of being reduced with rate, provides a kind of electric flux switching equipment, cell apparatus and battery maintenance system.
A kind of electric flux switching equipment, for realizing the electric energy conversion or battery pack between battery in battery pack and outside
Energy conversion between portion, the electric flux switching equipment include:
Charge and discharge bus, including first port；First connectivity port is for connecting external charging equipment；
Power Exchange bus, including second port；The second connection end mouth is used to carry out power with external power equipment
Exchange；
Single battery bidirectional equalization array has multiple single battery bidirectional equalization modules；Each single battery is two-way
Weighing apparatus module with a single battery for connecting；
Single battery charge-discharge modules, including third port and the 4th port；The third port and the charge and discharge are total
Line connection；4th port with the both ends of any one single battery in the battery pack for connecting；
Battery set charge/discharge module, including fifth port and the 6th port；The fifth port can selectively with it is described
Charge and discharge bus or Power Exchange bus connection；6th port with the both ends of the battery pack for connecting；With
And
Power switching modules, the power switching modules are connected to total anode of the charge and discharge bus and the battery pack
Between.
Single battery bidirectional equalization array in above-mentioned electric flux switching equipment can carry out charge and discharge to each single battery,
It realizes with the charge and discharge between the different battery packs between battery pack.Single battery charge-discharge modules then can be total by charge and discharge
Line carries out charge and discharge to any one single battery in battery pack using external equipment, and battery set charge/discharge module can
It is realized by charge and discharge bus or Power Exchange bus and carries out Power Exchange between external equipment and entire battery pack, it is final real
The electric flux between energy exchange or battery pack and outside in existing battery pack between battery exchanges, and then realizes to battery pack
It is battery balanced, to complete reparation to battery pack, improve the service efficiency of battery.
The maximum output current of the single battery bidirectional equalization module is less than the battery in one of the embodiments,
The maximum output current of group charge-discharge modules, and the maximum output current of the battery set charge/discharge module is less than the monomer electricity
The maximum output current of pond charge-discharge modules.
The output electric current of the single battery bidirectional equalization module is described less than 10 amperes in one of the embodiments,
The maximum output current of battery set charge/discharge module is less than 20 amperes, the maximum output current of the single battery charge-discharge modules
Less than 30 amperes.
The single battery bidirectional equalization module, the battery set charge/discharge module and institute in one of the embodiments,
Stating single battery charge-discharge modules is DC-DC bidirectional constant conversion module.
It in one of the embodiments, further include gating module；The gating module respectively with the charge and discharge bus, institute
Power Exchange bus is stated to connect with the battery set charge/discharge module；The gating module is for controlling the battery set charge/discharge
Module is connect with the charge and discharge bus or the battery set charge/discharge module is connect with the Power Exchange bus.
It in one of the embodiments, further include battery capacity detection module and control module；The battery capacity detection
Module is used to detect the voltage of each single battery in the battery pack；The control module is detected with the battery capacity respectively
Module, the single battery bidirectional equalization array, the single battery charge-discharge modules, the battery set charge/discharge module and institute
State power switching modules connection；The control module is used for the voltage according to each single battery to the single battery bidirectional equalization
Array, the single battery charge-discharge modules, the battery set charge/discharge module and the power switching modules working condition
It is controlled.
It in one of the embodiments, further include battery AC internal Resistance measurement module；The battery AC internal Resistance measures mould
Block is used to carry out tracking measurement to the AC internal Resistance of battery pack or single battery.
A kind of cell apparatus, including battery pack；The battery pack includes multiple single batteries being serially connected；The battery
Device further includes electric flux switching equipment；The electric flux switching equipment is handed over using the electric flux as described in aforementioned any embodiment
Exchange device.
The cell apparatus further includes shell in one of the embodiments,；The first port and the second port
It fixes on the housing.
A kind of battery maintenance system, including controller, the battery maintenance system further include multiple electric flux switching equipment,
The electric flux switching equipment is using the electric flux switching equipment as described in aforementioned any embodiment；Each electric flux exchange is set
Charge and discharge are carried out by total charge and discharge electrical interface and external equipment after charge and discharge bus interconnection in standby；Each electric flux exchange
Power Exchange is carried out by total Power Exchange interface and external equipment after Power Exchange bus interconnection in equipment；It is described
Controller is for controlling each electric flux switching equipment.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of electric flux switching equipment；
Fig. 2 is the structural schematic diagram of the battery maintenance system in an embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application, it is to be understood that term " center ", " transverse direction ", "upper", "lower" "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner" and "outside" is side based on the figure
Position or positional relationship are merely for convenience of description the application and simplify description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.This
Outside, it should be noted that when element is referred to as " being formed on another element ", it can be directly connected on another element or
Person may be simultaneously present centering elements.When an element is considered as " connection " another element, it be can be directly connected to separately
One element exists simultaneously centering elements.On the contrary, there is no centres when element is referred to as " directly existing " another element "upper"
Element.
Fig. 1 is the structural schematic diagram of the electric flux switching equipment 100 in an embodiment.The electric flux switching equipment 100 can
To realize the electric energy conversion between the single battery 12 in battery pack 10 and the electric energy between battery pack 10 and external equipment
Amount exchange.Wherein, battery pack 10 can be independent battery pack, be also possible to divide when number of batteries is larger by certain amount
, have the substring for disconnecting and being separately maintained.Electric flux switching equipment 100 includes charge and discharge bus 110, Power Exchange
Bus 120, single battery bidirectional equalization array 130, single battery charge-discharge modules 140, battery set charge/discharge module 150 and
Power switching modules 160.
Charge and discharge bus 110 is mainly used for providing charge and discharge to some single battery 12 in battery pack 10 or battery pack 10
Electric current.Charge and discharge bus 110 includes first port 112.First port 112 with external fill device for being attached.It is external
Equipment can connect for external power supply equipment or external electric equipment.External power supply equipment can be mentioned to charge and discharge bus 110
For charging current, external electric equipment then can be used as the discharge equipment of charge and discharge bus 110.For example, external power supply equipment can
Think the power-supply devices such as charger, and external electric equipment can be then load.External equipment can also be while be safeguarded
Other battery packs, thus realize utilize connection other battery packs carry out charge and discharge.Therefore, external battery pack can be used as supplying
Electric equipment can also be used as electrical equipment, depend on control model.It is appreciated that external electric equipment and external power supply equipment
Or other electric flux switching equipment namely an electric flux switching equipment carry out another electric flux switching equipment
Electric discharge, perhaps charges with fast lifting or reduction to the electric flux switching equipment by other electric flux switching equipment
The electric energy of single battery 12 or battery pack 10, to accelerate the maintenance efficiency of battery.And it can between electric flux switching equipment
To form an electric flux exchange system, concurrent maintenance is carried out to multiple battery packs.
Power Exchange bus 120 includes second port 122.Second port 122 between external equipment for carrying out power
Exchange namely Power Exchange bus 120 are for realizing the Power Exchange between battery pack 10 and external equipment.In the present embodiment
In, Power Exchange process is realized again by charge and discharge are carried out to battery pack 10.Namely at this point, external power equipment is same
It can be the external power supply equipment and external electric equipment of power-type, or other electric flux switching equipment.In this implementation
In example, by the way that charge and discharge bus 110 and Power Exchange bus 120 is arranged simultaneously, it may be implemented to battery pack 10 or battery
While single battery 12 in group 10 carries out fast charging and discharging, the Power Exchange between battery pack 10 and external equipment is realized,
To improve the maintenance efficiency of entire battery pack 10.
Single battery bidirectional equalization array 130 includes multiple single battery bidirectional equalization modules.Each single battery is two-way
Balance module, to carry out independent charging and discharging to the single battery 12, is realized not for connecting with a single battery 12
With the electric flux exchange between single battery 12, achieve the purpose that take high benefit low, to realize the active equalization to battery pack 10.
At this point, can be directly realized by between single battery bidirectional equalization module and each single battery 12 if battery pack is machine cabinet type
Connection.It, can directly will be single if battery pack has maintenance interface matched with electric flux switching equipment in this case
Body battery bidirectional equalization module is attached by the maintenance interface and each single battery.If battery unit package is at traditional electricity
Chi Bao is just able to achieve above-mentioned connection after then needing to unpack to battery pack.List in single battery bidirectional equalization array 130
The quantity of body battery bidirectional equalization module can be greater than or equal to the quantity of the single battery 12 in battery pack 10.Therefore above-mentioned electricity
Energy exchange circuit can have well adapting to property suitable for the battery pack 10 of 12 quantity of different monomers battery.
Single battery charge-discharge modules 140 include third port and the 4th port.Wherein, third port and charge and discharge bus
110 connections.4th port is then used for the both ends connection of any single battery 12 in battery pack 10.Therefore, single battery charge and discharge
Electric module 140 can use the charging current provided in charge and discharge bus 110 and individually be charged to the single battery 12 of connection
Or the independent electric discharge of the single battery 12 is realized by charge and discharge bus 110, to realize to the quick of the single battery 12
Charge and discharge improve maintenance efficiency.
Battery set charge/discharge module 150 includes fifth port and the 6th port.In the present embodiment, fifth port can be selected
It is connect with charge and discharge bus 110 or Power Exchange bus 120 with selecting.6th port is then connect with the both ends of battery pack 10,
It is connect respectively with total anode of battery pack 10 and total cathode.Battery set charge/discharge module 150 can pass through charge and discharge bus 110
Charge and discharge are carried out to entire battery pack 10, or Power Exchange is carried out by Power Exchange bus 120 and other external equipments, from
And realize the adjusting to the electric flux of battery pack 10.
Power switching modules 150 are connected between charge and discharge bus 110 and total anode of battery pack 10.By opening power
The control for closing the folding condition of module 150, may be implemented the control of the connection on-off between battery pack 10 and charge and discharge bus 110
System, so that battery pack 10 can directly carry out charge and discharge by charge and discharge bus 110.
Single battery bidirectional equalization array 130 in above-mentioned electric flux switching equipment 100 can to each single battery 12 into
Row charge and discharge are realized with the charge and discharge between the different battery packs between battery pack 10.Single battery charge-discharge modules 140 then may be used
To carry out charge and discharge to electric 12 ponds of any one monomer in battery pack 10 using external equipment by charge and discharge bus 110, and
And battery set charge/discharge module 150 can pass through external equipment to whole by charge and discharge bus 110 or Power Exchange bus 120
A battery pack 10 carries out charge and discharge, the final energy exchange realized between the battery in battery pack 10 or battery pack 10 and outside
Between electric flux exchange, and then realize to the battery balanced of battery pack 10, to complete the reparation to battery pack 10, improve electricity
The service efficiency in pond realizes the extension to battery.Also, it is provided with simultaneously in above-mentioned electric flux switching equipment 100
Charge and discharge bus 110 and Power Exchange bus 120 may be implemented to the single battery 12 in battery pack 10 or battery pack 10
While carrying out fast charging and discharging, the Power Exchange between battery pack 10 and external equipment is realized, to improve entire battery
Maintenance efficiency.Above-mentioned electric flux switching equipment can carry out battery under the premise of not changing existing battery pack series architecture
On-line maintenance.
In general, euqalizing current is bigger, and portfolio effect is better during carrying out balanced to battery.But high-performance
Equal balance system then mean biggish space, higher cost, excessive control node and complexity electrical connection.Therefore exist
In the battery applications much limited by volume and cost, have no alternative but using relatively simple equal balance system.And above-mentioned electric flux is handed over
Exchange device exists independently of battery to be safeguarded, so that it can carry out balanced dimension to the battery in different battery applications
Shield, thus the requirement during reducing battery applications to space and cost.
In one embodiment, the maximum output current of single battery bidirectional equalization module is less than battery set charge/discharge module
150 maximum output current.The maximum output current of battery set charge/discharge module 150 is then less than single battery charge-discharge modules
140 maximum output current namely the maximum output current of single battery charge-discharge modules 140 are maximum, thus for monomer electricity
The fast charging and discharging in pond 12 provides possibility.In one embodiment, single battery bidirectional equalization module, battery set charge/discharge module
150 and single battery charge-discharge modules 140 be DC-DC bidirectional constant conversion module.
In one embodiment, single battery bidirectional equalization module is the two-way isolation DC-DC conversion module of middle power, electricity
Flow valuve is controllable to 0 ampere~10 amperes, and specific output can be controlled by the methods of programming.Since single battery is double
It is a more complicated process to balance module, euqalizing current is bigger, and the portfolio effect that may not allow for is better, and by
To spacial influence, be used for connect the line footpath of the connecting line between single battery bidirectional equalization module and single battery 12 can not
It is too high, therefore, be not suitable for selecting excessive electric current.Two-way isolation DC-DC conversion module is to each monomer electricity in battery pack 10
Pond 12 carries out charge and discharge, therefore single battery bidirectional equalization array 130 can also be referred to as two-way active equalization array.Specifically,
Two-way isolation DC-DC conversion module includes transformer and PWM switch, to pass through the PWM of switch transformer and control transformer
Switch realizes primary to secondary voltage transformation.The side of transformer connection single battery 12 is referred to as battery side, separately
Side is then referred to as bus side.Above-mentioned two-way isolation DC-DC conversion module can be (total for common Buck (battery side)-Boost
Line side) switch power supply topological structure.The battery side of two-way isolation DC-DC conversion module directly acts on battery, and bus side can be with
It is connected in charge and discharge bus 110 by flowing in parallel or other combinations, by becoming to each two-way isolation DC-DC
The intelligent scheduling for changing the mold block, realizes electric discharge or other batteries charging to the battery of any battery to other batteries.
In one embodiment, single battery charge-discharge modules 140 are two-way or unidirectional DC-DC conversion module, master
The individual battery of special loss or especially full electricity can be carried out quick for the operation of the single battery 12 in battery pack 10
Charging hair or repid discharge.Therefore, when there is the battery of a small amount of especially power shortage or full electricity in a battery pack, Jin Jintong
It crosses whole group charge and discharge and active equalization requires to expend a great deal of time, and utilize single battery charge-discharge modules 140 can be same
Step carries out individual high current charge-discharge to them, matches so that they reach with whole group battery performance as early as possible, therefore its current value
It is controllable to 0 ampere~30 amperes.In addition, single battery charge-discharge modules 140 can also battery to specified chemical ingredient (such as
Lead-acid battery) heavy current impact is carried out to repair the battery that (activation) falls behind.Single battery charge-discharge modules 140 and single battery
12 connection can carry out automatically, can also be carried out manually by user.
The output electric current of battery set charge/discharge module 150 is between 0 ampere~20 amperes, and specifically exporting electric current can root
It is configured according to programming.In the present embodiment, battery set charge/discharge module 150 is the two-way non-isolation DC-DC of wide dynamic range
Conversion module.Battery set charge/discharge module 150 is used to carry out whole charge or discharge to concatenated battery pack 10, therefore can also
To be referred to as channel DC-DC conversion module.The battery set charge/discharge module 150 can be used the two-way Buck-Boost of symmetric form and open
Close power supply topologies.Likewise, the side of connection battery pack 10 is battery pack side, the other side is then optionally connected to charge and discharge
Between electric bus 110 or Power Exchange bus 120.In the present embodiment, there are two effects for battery set charge/discharge module 150.
It when battery set charge/discharge module 150 is connect with charge and discharge bus 110, is used to control the charging and discharging currents of battery pack 10, rises
To the effect gently charged, and the effect of charging is adjusted, therefore its electric current should not be too large, controlled within 20 amperes.
When battery set charge/discharge module 150 is connect with Power Exchange bus 120, the electric flux between battery pack and outside may be implemented
Exchange.Battery set charge/discharge module 150 is more to realize that battery pack 10 is exchanged with external electric flux namely it is more concerned about
It is the automatic conditioning in maintenance process, without being realized using the conversion module with bigger output electric current.Because if
When battery pack 10 needs more powerful charge and discharge, it can directly be connected with charge and discharge bus 110 by power switching modules 160
It connects, and then charge and discharge is carried out by external high power charging/discharging apparatus.
In one embodiment, above-mentioned electric flux switching equipment further includes gating module 170.Gating module 170 respectively with fill
Discharge bus 110, Power Exchange bus 120 connect.Gating module 170 is for controlling battery set charge/discharge module 150 and charge and discharge
Electric bus 110 connects, or control battery set charge/discharge module 150 is connect with Power Exchange bus 120.In gating module 170
It may include two switch units.One switch unit is used to connect charge and discharge bus 110 and battery set charge/discharge module 150,
Another switch unit is then used to connect Power Exchange bus 120 and battery set charge/discharge module 150.
In one embodiment, above-mentioned electric flux switching equipment further includes control module (not shown) and battery capacity detection
Module (not shown).Battery capacity detection module is used to detect the voltage of each single battery in battery pack.Control module point
Not with battery capacity detection module, single battery bidirectional equalization array 130, single battery charge-discharge modules 140, battery pack charge and discharge
Electric module 150 and power switching modules 160 connect.Control module is used for two-way to single battery according to the voltage of each single battery
The work of balanced array 130, single battery charge-discharge modules 140, battery set charge/discharge module 150 and power switching modules 160
State is controlled.For example, when control module judges that it can be two-way by single battery according to the voltage in battery pack
Balanced array 130 is come when realizing the equilibrium in battery pack 10 between battery, control single battery bidirectional equalization array 130 carries out work
Make.When control module judges that the battery capacity of some single battery 12 in battery pack 10 especially loses or especially expire electricity
When, control single battery charge-discharge modules 140 work, and realize the quick charge or repid discharge to the single battery 12.It is single
Body battery bidirectional equalization array 130 can also carry out simultaneously.When in battery pack there are when multiple groups battery, need to this group of battery into
It, then can be by control power switching modules conducting, thus directly right using charge and discharge bus 110 when row charge and discharge realize balanced
Battery pack 10 carries out charge and discharge, or the control work of battery set charge/discharge module 150 carries out charge and discharge to battery pack 10.Specifically may be used
To determine according to the required size for mending electric electric current or discharge current, it can directly pass through power switch mould when electric current is larger
Block 160 to carry out charge and discharge to battery pack 10.
In one embodiment, above-mentioned electric flux switching equipment 100 further include battery AC internal Resistance measurement module (in figure not
Show).Battery AC internal Resistance test module is for testing the AC internal Resistance of battery pack 10 or single battery 12.Battery
AC internal Resistance is the Common Parameters of reaction cell performance, therefore may be implemented by the monitoring of the AC internal Resistance to battery to battery
The understanding of performance.Specifically, battery AC internal Resistance measurement module can be constant current AC sine wave producer or tracker, than
Such as use 1KHz/100mA constant current AC sine wave tracker.Specifically, battery AC internal Resistance measurement module is constant by electric current, electricity
The signal loading according to sine wave AC variation is pressed at the both ends of battery pack 10 or the both ends of single battery 12, then measurement is electric
The phase difference of cell voltage and input voltage is by calculating the parameter obtained.Battery AC internal Resistance measurement module and battery pack 10 or
Single battery 12 connection can by way of manual plug wire connection signal input point and measurement point, can also be connected automatically
It connects or multichannel while being attached measurement.
Above-mentioned electric flux switching equipment 100 can repair battery pack 10, remediation efficiency with higher, and energy
Enough extend the service life of battery pack 10.
One embodiment of the application also provides a kind of cell apparatus.The cell apparatus includes battery pack 10 and aforementioned any
Electric flux switching equipment 100 in one embodiment namely the entire circuit in Fig. 1.Wherein, battery pack 10 includes multiple mutual strings
The single battery 12 of connection.That is, being integrated with electric flux switching equipment 100 in the present embodiment, in cell apparatus so as to logical
The electric flux migration between the battery pack inside the realization cell apparatus of electric flux switching equipment 100 of itself is crossed, and realizes battery
Electric flux migration is carried out between group and external equipment, so that cell apparatus be avoided to be unable to satisfy the use demand of battery in inside
When, the service efficiency of battery can be improved in the problem of being scrapped processing generation.Also, due to being just integrated with inside cell apparatus
The electric flux switching equipment 100, it is therefore desirable to, can be with when being safeguarded by external charging/discharging apparatus or Power Exchange equipment
It is directly connect by first port 112 or second port 122 with external equipment, to greatly improve maintenance effect
Rate.
In one embodiment, cell apparatus further includes shell.Battery pack 10 and electric flux switching equipment 100 are fixed on shell
It is internal.The first port 112 and second port 122 of electric flux switching equipment 100 are each attached on shell.It therefore, can be direct
It is connect by first port 112 or second port 122 with external equipment.
Fig. 2 is the structural schematic diagram of the battery maintenance system in an embodiment.The battery maintenance system includes multiple as before
State electric flux switching equipment 100 described in any embodiment.Wherein, SCHM indicates single battery charge-discharge modules in Fig. 2；xGS
Indicate that power switching modules, DCHM indicate battery set charge/discharge module.Each electric flux switching equipment 100 constitutes a grouping
(channel can also be referred to as), namely battery maintenance system can be referred to as packet type battery maintenance system at this time.Respectively
The charge and discharge bus 110 of electric flux switching equipment 100 is connect by total charge and discharge electrical interface with external equipment after being connected with each other, respectively
Function is carried out by total Power Exchange interface and external equipment after Power Exchange bus interconnection in electric flux switching equipment
Rate exchange.Multiple electric flux switching equipment are provided in above-mentioned battery maintenance system, so that it can be multiple battery packs
Concurrent maintenance is carried out, or concurrent maintenance is carried out to the different substrings in the battery pack with more single battery, so as to
Further increase maintenance efficiency.
Above-mentioned battery maintenance system at least may include following electric flux migration path:
1) the electric flux migration between any single battery for each internal battery pack safeguarded；
The electric flux migration of internal battery pack is mainly two-way by the single battery in each electric flux switching equipment
Weighing apparatus module 130 is realized.
2) the electric flux migration between the different battery packs safeguarded；
Electric flux between battery pack migrates mainly by power switching modules 160 and battery set charge/discharge module
150 are controlled, and are formed into a loop the different battery packs for needing to carry out electric flux migration by Power Exchange bus 120.
3) between the battery pack safeguarded and external equipment.
The battery pack safeguarded can be by controlling power switching modules 160 and battery set charge/discharge module 150
System to connect by charge and discharge bus 110 or Power Exchange bus 120 with external equipment, and carries out electric flux migration.Outside
Portion's equipment is as previously mentioned, can be charger appropriate, electronic load and and electric flux in any of the preceding embodiments exchange
Equipment 100.
It was verified that for initializing the good battery pack of consistency, occur time of single battery performance difference with
The electrical structure of battery pack connection is related to use process.Effect of the excessively frequent shallow-layer equilibrium to the consistency for keeping battery pack
Fruit is not fine.On the contrary, keeping the effect of long-term consistency to battery pack by regularly carrying out depth equilibrium to battery pack
With being significant.Carry out depth equilibrium, it is necessary to high performance maintenance system.Here maintenance is not only to only include high current
Equilibrium also includes the whole charge and discharge to whole group battery.For Large-scale High-Pressure battery pack, whole charging/discharging apparatus needs height
Pressure, and high-voltage great-current equipment cost is higher, and high pressure also brings biggish security risk.So we have proposed above-mentioned
Packet type battery maintenance system reduces the totle drilling cost of system in the way of low pressure grouping, high current and concurrent maintenance and mentions
The high safety of whole system.
Above-mentioned electric flux switching equipment, cell apparatus and battery maintenance system can be applied to large-scale energy storage, not between
In the fields such as power-off source and electric car class battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of electric flux switching equipment, for realizing the electric flux exchange and battery pack between single battery in battery pack
Electric flux between external equipment exchanges, which is characterized in that the electric flux switching equipment includes:
Charge and discharge bus, including first port；The first port is used to carry out charge and discharge with external equipment；
Power Exchange bus, including second port；The second port is used to carry out Power Exchange with external equipment；
Single battery bidirectional equalization array has multiple single battery bidirectional equalization modules；Each single battery bidirectional equalization mould
Block with a single battery for connecting；
Single battery charge-discharge modules, including third port and the 4th port；The third port and the charge and discharge bus connect
It connects；4th port with the both ends of any one single battery in the battery pack for connecting；
Battery set charge/discharge module, including fifth port and the 6th port；The fifth port can selectively with the charge and discharge
Electric bus or Power Exchange bus connection；6th port with the both ends of the battery pack for connecting；And
Power switching modules, the power switching modules are connected to total anode of the charge and discharge bus and the battery pack
Between.
2. electric flux switching equipment according to claim 1, which is characterized in that the single battery bidirectional equalization module
Maximum output current is less than the maximum output current of the battery set charge/discharge module, and the battery set charge/discharge module is most
Big output electric current is less than the maximum output current of the single battery charge-discharge modules.
3. electric flux switching equipment according to claim 1 or 2, which is characterized in that the single battery bidirectional equalization mould
The output electric current of block is less than 10 amperes, and the maximum output current of the battery set charge/discharge module is less than 20 amperes, the monomer
The maximum output current of battery charging and discharging module is less than 30 amperes.
4. electric flux switching equipment according to claim 1 or 2, which is characterized in that the single battery bidirectional equalization mould
Block, the battery set charge/discharge module and the single battery charge-discharge modules are DC-DC bidirectional constant conversion module.
5. electric flux switching equipment according to claim 1, which is characterized in that further include gating module；The gating mould
Block is connect with the charge and discharge bus, the Power Exchange bus and the battery set charge/discharge module respectively；The gating mould
Block for control the battery set charge/discharge module connect with the charge and discharge bus or the battery set charge/discharge module and
The Power Exchange bus connection.
6. electric flux switching equipment according to claim 1, which is characterized in that further include battery capacity detection module and control
Molding block；The battery capacity detection module is used to detect the voltage of each single battery in the battery pack；The control mould
Block respectively with the battery capacity detection module, the single battery bidirectional equalization array, the single battery charge-discharge modules,
The battery set charge/discharge module is connected with the power switching modules；The control module is used for the electricity according to each single battery
Pressure is to the single battery bidirectional equalization array, the single battery charge-discharge modules, the battery set charge/discharge module and institute
The working condition for stating power switching modules is controlled.
7. electric flux switching equipment according to claim 1, which is characterized in that further include battery AC internal Resistance measurement mould
Block；The battery AC internal Resistance measurement module is used to carry out tracking measurement to the AC internal Resistance of battery pack or single battery.
8. a kind of cell apparatus, including battery pack；The battery pack includes multiple single batteries being serially connected；Its feature exists
In the cell apparatus further includes electric flux switching equipment；The electric flux switching equipment is used as claim 1~7 is any
The electric flux switching equipment.
9. cell apparatus according to claim 1, which is characterized in that the cell apparatus further includes shell；Described first
Port and the second port are fixed on the housing.
10. a kind of battery maintenance system, including controller, which is characterized in that the battery maintenance system further includes multiple electric energy
Switching equipment is measured, the electric flux switching equipment is using the electric flux switching equipment as described in claim 1~7 is any；Each institute
It states and charge and discharge is carried out by total charge and discharge electrical interface and external equipment after the charge and discharge bus in electric flux switching equipment is connected with each other
Electricity；Power Exchange bus in each electric flux switching equipment be connected with each other after by total Power Exchange interface and external equipment into
Row Power Exchange；The controller is for controlling each electric flux switching equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160545.3A CN109274149A (en) | 2018-09-30 | 2018-09-30 | Electric flux switching equipment, cell apparatus and battery maintenance system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160545.3A CN109274149A (en) | 2018-09-30 | 2018-09-30 | Electric flux switching equipment, cell apparatus and battery maintenance system |
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| Publication Number | Publication Date |
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| CN109274149A true CN109274149A (en) | 2019-01-25 |
Family
ID=65195030
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811160545.3A Pending CN109274149A (en) | 2018-09-30 | 2018-09-30 | Electric flux switching equipment, cell apparatus and battery maintenance system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI761249B (en) * | 2021-07-05 | 2022-04-11 | 倍米科技股份有限公司 | External connection installation for direct access of internal cell block electrodes of battery modules |
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