CN109273785A - Battery maintenance instrument and battery maintenance method - Google Patents
Battery maintenance instrument and battery maintenance method Download PDFInfo
- Publication number
- CN109273785A CN109273785A CN201811160530.7A CN201811160530A CN109273785A CN 109273785 A CN109273785 A CN 109273785A CN 201811160530 A CN201811160530 A CN 201811160530A CN 109273785 A CN109273785 A CN 109273785A
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- Prior art keywords
- battery
- group
- maintenance
- battery pack
- single battery
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Classifications
-
- 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
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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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- 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
This application provides a kind of battery maintenance instrument and battery maintenance methods.The battery maintenance instrument includes governor circuit and multiple battery maintenance circuits.The multiple battery maintenance circuit is electrically connected with the governor circuit, the operational order for being sent according to the governor circuit, carries out electric voltage equalization to the single battery in the battery pack group, and/or energy exchange carrying out group to multiple battery packs.In battery maintenance instrument provided by the present application, pass through the multiple battery maintenance circuit, carry out active voltage equilibrium in battery pack to the single battery according to operational order, and/or multiple battery pack realizations carry out energy exchange between group, it does not need to disassemble battery pack, and multiple groups battery can be safeguarded simultaneously, reduce the maintenance cost of battery pack.
Description
Technical field
This application involves battery technology fields, more particularly to a kind of battery maintenance instrument and battery maintenance method.
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.Due to list
The voltage of body battery is all very low, thus battery pack be used in series be current driving force and energy-storage battery application main way.
Groups of series-connected cell is in each single battery meeting for after charge and discharge use after a period of time, forming battery pack
There is certain capacity volume variance.If correcting these differences not in time, under the whole charge and discharge cycles ability meeting quickly of battery pack
Drop, and may cause the security risk of battery pack.Practice have shown that the cycle life of the battery pack after series connection in groups is relative to structure
30%-50% can generally be declined at the nominal cycle life of each single battery of battery pack.
There are problems that capacity volume variance for the above single battery, generally passes through referred to as battery balanced (or balance) in the industry
Technology single battery carry out online local charge and discharge to keep the Capacity uniformity of internal battery pack battery.It was verified that
Good battery maintenance can significantly extend the service life of battery, and guarantee the safety of battery.Current battery is after sale
Maintenance work is mainly undertaken by battery manufacturers.Most manufacturers use method be to recycling battery after to battery pack into
Then row dismantling detection is safeguarded, this maintenance mode is relatively time consuming laborious using the production-line technique of forming and capacity dividing again,
And materially increase the burden of battery manufacture enterprise.
Summary of the invention
Based on this, it is necessary to which needle is at present because of maintenance caused by needing to disassemble battery pack in battery pack maintenance process
The problem of complex process, provides a kind of battery maintenance instrument and battery maintenance method.
The embodiment of the present application provides a kind of maintenance instrument, comprising:
Governor circuit；
Multiple battery maintenance circuits, are electrically connected with the governor circuit, the operation for being sent according to the governor circuit
Instruction carries out electric voltage equalization to the single battery in the battery pack group being attached thereto, and/or to the multiple institutes being attached thereto
It states battery pack and carries out energy exchange between group.
In some embodiments provided by the present application, the battery maintenance circuit includes:
DC-DC equilibrium branch, battery side are connect with single battery in group, and bus side is connect with Direct Power bus, with right
Single battery in the battery pack carries out electric voltage equalization；
DC-DC safeguards branch between group, and battery side is connect with the battery pack, bus side and regulation power bus or described straight
Flow power bus connection, to carry out group to multiple battery packs energy exchange；And
Switching branches are connected between the battery anode and the Direct Power bus, to control the battery pack
With the conducting of the Direct Power bus.
In some embodiments provided by the present application, DC-DC equilibrium branch includes multiple in the of array distribution in described group
The battery side of one isolating transformer, each first isolating transformer is connect with the single battery, bus side and described straight
Flow power bus connection.
In some embodiments provided by the present application, DC-DC equilibrium branch further includes multiple voltage control modules in described group,
The voltage control module and first isolating transformer correspond, and the voltage control module and the governor circuit
And first isolating transformer is separately connected, the variable voltage signal for being provided according to the governor circuit, it is right therewith to control
First isolating transformer answered is that the single battery carries out charge or discharge.
In some embodiments provided by the present application, the current margin of first isolating transformer is 0-10A.
In some embodiments provided by the present application, DC-DC safeguards that branch includes the second isolating transformer between described group, described
The battery side of second isolating transformer is connect with the battery pack, the bus side of second isolating transformer and the adjusting function
Rate bus or dc power bus connection.
In some embodiments provided by the present application, the current margin of second isolating transformer is 0-20A.
In some embodiments provided by the present application, the switching branches include switching tube, are connected on the battery anode
Between the dc power bus.
In some embodiments provided by the present application, the battery maintenance circuit further include:
Single battery DC-DC charging paths, battery side are connect with single battery charging interface, bus side and the direct current function
The connection of rate bus, the difference of the average electricity of the single battery in the electricity of the single battery and the battery pack are more than pre-
If when range, carrying out charge or discharge for the single battery.
In some embodiments provided by the present application, the single battery DC-DC charging paths include third isolating transformer,
Battery side is connect with single battery, and bus side is connect with the dc power bus.
In some embodiments provided by the present application, the current margin of the third isolating transformer is 0-30A, with right
The single battery realizes quick charge or electric discharge.
In some embodiments provided by the present application, the battery maintenance instrument further includes at least one detection circuit, the inspection
Slowdown monitoring circuit is connect with the governor circuit, the monocell and the battery pack, for what is provided according to the governor circuit
Detect single battery or the AC internal Resistance of the battery pack described in signal detection.
In some embodiments provided by the present application, the battery maintenance instrument further includes control panel, the control panel with
The governor circuit and the multiple battery maintenance circuit connection, manipulate for realizing to the battery maintenance instrument.
Based on the same inventive concept, the embodiment of the present application also provides a kind of battery maintenance methods, comprising:
Receive the operational order that governor circuit is sent；
According to the operational order, to the single battery progress electric voltage equalization in the battery pack group being attached thereto, and/
Or energy exchange carrying out group to multiple battery packs being attached thereto.
It is described according to the operational order in some embodiments provided by the present application, to the monomer in the battery pack group
Battery carries out electric voltage equalization, and/or energy exchange carrying out group to multiple battery packs, comprising:
According to the operational order, the single battery in the battery pack group is carried out using DC-DC equilibrium branch in organizing
Electric voltage equalization, and in the single battery completion group after electric voltage equalization, safeguard branch to multiple described using DC-DC between group
Battery pack carries out energy exchange between group；Or
According to the operational order, handed over using energy DC-DC maintenance branch carries out group to multiple battery packs between group
Change, and between carrying out group after energy exchange, using organize in DC-DC equilibrium branch to the single battery in the battery pack group into
Row electric voltage equalization；Or
According to the operational order, the single battery in the battery pack group is carried out using DC-DC equilibrium branch in organizing
Electric voltage equalization synchronizes energy exchange carrying out group to multiple battery packs using DC-DC maintenance branch between group, to realize to institute
Energy exchange stating electric voltage equalization in single battery completion group and carrying out group to multiple battery packs.
In some embodiments provided by the present application, the battery maintenance method further include:
The AC internal Resistance of the battery cell and/or the battery pack is detected using detection circuit；
According to the AC internal Resistance, judge whether to need equal to the battery cell and/or battery pack progress voltage
Weighing apparatus.
In some embodiments provided by the present application, the battery maintenance method further include:
Judge whether the difference of the electricity and the average electricity of the single battery in the battery pack of the single battery surpasses
Cross preset range；
When the difference of the average electricity of the single battery in the electricity of the single battery and the battery pack is more than default
It is that the single battery carries out charge or discharge using single battery DC-DC charging paths when range.
To sum up, this application provides a kind of battery maintenance instrument and battery maintenance methods.The battery maintenance instrument includes institute
State governor circuit and the multiple battery maintenance circuit.The multiple battery maintenance circuit is electrically connected with the governor circuit, is used
In the operational order sent according to the governor circuit, electric voltage equalization is carried out to the single battery in the battery pack group, and/or
Energy exchange carrying out group to multiple battery packs.In battery maintenance instrument provided by the present application, tieed up by the multiple battery
Protection circuit carries out active voltage equilibrium and/or multiple batteries according to operational order to the single battery in battery pack
Group, which is realized, carries out energy exchange between group, does not need to disassemble battery pack, and can safeguard multiple groups battery simultaneously, reduces electricity
The maintenance cost of pond group.
Detailed description of the invention
Fig. 1 is a kind of electrical structure schematic diagram of battery maintenance instrument provided by the embodiments of the present application；
Fig. 2 is the circuit structure signal of multiple maintenance circuitries in a kind of battery maintenance instrument provided by the embodiments of the present application
Figure；
Fig. 3 is a kind of electrical block diagram of the maintenance circuitry provided by the embodiments of the present application；
Fig. 4 is a kind of flow diagram of battery maintenance method provided by the embodiments of the present application；
Fig. 5 is the flow diagram of another battery maintenance method provided by the embodiments of the present application.
Drawing reference numeral explanation:
100 governor circuits
200 battery maintenance circuits
DC-DC equilibrium branch in 210 groups
211 first isolating transformers
212 voltage control modules
DC-DC safeguards branch between 220 groups
221 second isolating transformers
230 switching branches
240 single battery DC-DC charging paths
241 third isolating transformers
300 detection circuits
400 control panels
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.
Please also refer to Fig. 1 and Fig. 2, the embodiment of the present application provides a kind of battery maintenance instrument, the battery maintenance instrument packet
Include governor circuit 100 and multiple battery maintenance circuits 200.The multiple battery maintenance circuit 200 and 100 electricity of governor circuit
Connection, the operational order for being sent according to the governor circuit 100, to the monomer electricity in the battery pack group being attached thereto
Pond carries out electric voltage equalization, and/or energy exchange carrying out group to the multiple battery packs being attached thereto.
It is noted that battery maintenance circuit 200 described herein connects single battery or the side of battery pack is referred to as
For battery side, the side for connecting power bus (including dc power bus and modulation power bus) is referred to as bus side.
It is appreciated that multiple battery maintenance circuits 200 described in the present embodiment had both included for described in being attached thereto
Single battery in battery pack group carries out the circuit of electric voltage equalization, also includes carrying out group to multiple battery packs being attached thereto
Between voltage maintenance circuitry.Therefore, electric with the monomer in battery pack to be safeguarded by way of plug when the battery maintenance instrument
, can be in the battery pack group to the carry out electric voltage equalization of the single battery when pond connects, and work as the battery maintenance
When instrument is connect by way of plug with multiple battery packs wait safeguard simultaneously, the voltage that can be realized between the battery pack is equal
Weighing apparatus.
Please also refer to Fig. 2 and Fig. 3, in some embodiments provided by the present application, the battery maintenance circuit 200 includes group
DC-DC safeguards branch 220 and switching branches 230 between interior DC-DC equilibrium branch 210, group.
It is appreciated that the battery side of DC-DC equilibrium branch 210 connect with single battery in described group, bus side with it is direct
Power bus connection, to carry out electric voltage equalization to the single battery in the battery pack.DC-DC equilibrium branch 210 in described group
For internal battery pack electric voltage equalization operation, i.e., converted by bi-directional DC-DC by the electricity of each single battery in internal battery pack
It measures and is swapped with the electricity of other monomers battery, charged to low battery single battery, high electricity single battery is carried out
Electric discharge, adjusts the electricity of the single battery, so that the electricity of any two single battery is only poor to be no more than threshold value, reaches same group
Interior battery take it is high mend low purpose, and then asking of declining of battery pack entirety charge and discharge cycles ability caused by eliminating because of electricity difference
Topic.
In some embodiments provided by the present application, DC-DC equilibrium branch 210 includes multiple in array distribution in described group
The battery side of first isolating transformer 211, each first isolating transformer 211 is connect with the single battery, bus side
It is connect with the dc power bus.
In the present embodiment, the multiple the first isolating transformer 211 in array distribution forms active equalization array, each
Single battery or the internal battery pack substring as composed by several continuous series single batteries, both correspond to one first every
From transformer 211, the single battery and the substring can carry out concurrent, electric current in synchronization and dc power bus
It is worth adjustable bidirectional power conversion.
It is not that the bigger effect of euqalizing current is better, in addition since two-way active equalization is a more complicated process
By spacial influence, the line footpath of power bus is also impossible to too high conventional battery pack.Therefore, the first isolation described in the present embodiment
The current margin of transformer 211 is 0-10A.
In some embodiments provided by the present application, DC-DC equilibrium branch 210 further includes multiple voltage control moulds in described group
Block 212, the voltage control module 212 is corresponded with first isolating transformer 211, and the voltage control module
212 are electrically connected with the governor circuit 100 and first isolating transformer 211, for according to the governor circuit
100 variable voltage signals provided, control corresponding first isolating transformer 211 be the single battery carry out charging or
Electric discharge.
It is appreciated that voltage control module 212 described in the present embodiment is switched including pulse-width signal, the pulse tune
Signaling switch processed realizes that necessary duty ratio exports according to the control instruction that the governor circuit 100 transmits, and then described in control
The work of first isolating transformer 211 realizes transformer by the primary voltage transformation to secondary or voltage device by secondary to primary.
In some embodiments provided by the present application, the voltage control module 212 is controlled using commercialized two-way active equalization
Device, such as the LTC3300 series of Linear company.
In the present embodiment, the battery side of DC-DC equilibrium branch 210 is directly connect with single battery in described group, and described group
The bus side of interior DC-DC equilibrium branch 210 is connect by the in parallel or other combinations of stream with the dc power bus,
The battery maintenance instrument, can be real by the intelligent scheduling to each first isolating transformer 211 and the operation of voltage control module 212
Now discharge to other single batteries using any single battery, or using any other single battery is that the single battery carries out
Charging.
In some embodiments provided by the present application, DC-DC safeguards that branch 220 includes the second isolating transformer between described group
221, the battery side of second isolating transformer 221 is connect with the battery pack, the bus of second isolating transformer 221
Side is connect with the regulation power bus or the dc power bus.
In the present embodiment, DC-DC safeguards that the bus side of branch 220 includes two ports, one of port between described group
It is connect with regulation power bus, another port is connect with the dc power bus.DC-DC safeguards branch 220 between described group
Battery side connect with total positive and negative anodes of the battery pack.DC-DC safeguards the voltage for the battery pack that branch 220 is safeguarded between described group
Range, depending on the type of battery pack and the string number of battery pack.It is appreciated that by using between multiple described groups in the present embodiment
DC-DC safeguards that branch 220 exchanges electric flux to realize between different battery packs, i.e., electricity is realized between different battery packs
Transfer.In general, DC-DC maintenance branch 220 is connected to the dc power bus between described group.It is handed between the battery pack
The energy changed is by transformation and constant flow regulation, and two such or more than two independent battery groups can pass through dc power
Bus and/or modulation power bus bar carry out realizing parallel maintenance to multiple battery packs.It is more for serial number
Battery pack, can by by multiple single batteries be grouped series connection realize whole group maintenance, at this time only with connect series-connected cell group
DC-DC maintenance branch is connected to dc power bus and/or modulation power bus between that highest corresponding group of grouping.At this time
DC-DC safeguards that branch is disconnected between the group of intermediate packets.In some embodiments provided by the present application, by serial number
Higher battery pack is grouped maintenance, is tieed up by the lower charge and discharge operation of voltage to height string number battery pack with realizing
Shield.Relative to the high string number battery pack maintenance instrument of large size being commonly used, battery maintenance instrument pair provided herein is utilized
Height string number battery pack is safeguarded, expense needed for safeguarding high string number battery pack can be reduced.
In the present embodiment, the cathode of the dc power bus is connect with the battery electrode, positive then selectable
Connect with the battery anode, between described group DC-DC safeguard branch 220 battery side connect, and with external charge and discharge
Equipment connection.
In some embodiments provided by the present application, the current margin of second isolating transformer 221 is 0-20A.
It is appreciated that DC-DC maintenance branch 220 can also be used other than for the battery pack entirety charge and discharge between described group
In the charging and discharging currents for controlling the battery pack, by adjusting the charging and discharging currents of a battery pack, to reach gentle charging
With the purpose of electric discharge.Therefore the operating current of DC-DC maintenance branch 220 should not be too large between described group, in general should control
Between 0-20A.In addition, the current margin of second isolating transformer 221 can also need to carry out according to real work
Adjustment.
In some embodiments provided by the present application, the switching branches 230 include switching tube (M), switching tube (M) string
It is associated between the battery pack and the dc power bus.In the present embodiment, the switching tube (M) can be triode,
It can be field-effect tube.The switching tube (M) can be N-type triode, be also possible to p-type triode, can also be to open manually
It closes；The field-effect tube can be N-type field-effect tube, be also possible to p-type field-effect tube.It will be described by the switching tube (M)
Battery anode is connect with the dc power bus.It is appreciated that can lead to when carrying out energy exchange between the battery pack
It crosses the switching tube (M) and connect corresponding battery pack with Direct Power bus, and be no longer pass through DC-DC maintenance branch between group
Road, to reduce the energy loss of the battery maintenance circuit.
In some embodiments provided by the present application, the battery maintenance circuit 200 further includes single battery DC-DC charging branch
The battery side on road 240, the single battery DC-DC charging paths 240 is connect with single battery charging interface, bus side with it is described
The connection of dc power bus, the difference of the average electricity of the single battery in the electricity of the single battery and the battery pack
When more than preset range, charge or discharge are carried out for the single battery.
In the present embodiment, the single battery DC-DC charging paths 240 include third isolating transformer 241, battery side with
Single battery connection, bus side are connect with the dc power bus.The single battery DC-DC charging paths 240 use
Buck Switching Power Supply topological circuit and synchronous rectification suitable for High-current output, carry out for single battery in battery pack
Operation can expire the single battery of electricity to special power shortage or especially, for example, the single battery in its electricity and the battery pack is flat
The difference of equal electricity is more than the single battery of preset range, carries out quick charge or repid discharge.The single battery DC-DC fills
It is positive and negative that electric branch 240 can be connected to the single battery that any one is safeguarded by way of switch matrix or dynamic wiring
Pole.
It is appreciated that only passing through whole group when there is the single battery of a small amount of especially power shortage or full electricity in the battery pack
Charge and discharge effect and/or active equalization operation realize that electric voltage equalization requires to take a long time.And utilize the single battery
DC-DC charging paths 240, which can then be synchronized, carries out individual high current charge-discharge to them, keeps them cell performance with whole group as early as possible
Matching can be reached.In addition, heavy current impact is also to repair (activation) to fall behind to the battery (such as lead-acid battery) of specified chemical ingredient
A kind of means of battery, can be improved the performance of single battery.
In some embodiments provided by the present application, the battery maintenance instrument further includes at least one detection circuit 300, with institute
State governor circuit 100, the monocell and battery pack connection, the detection for providing according to the governor circuit 100
The AC internal Resistance of single battery described in signal detection or the battery pack.
It is appreciated that single battery/battery pack AC internal Resistance is the reflection common ginseng of single battery/battery performance
Number, electric current is constant, voltage, to battery both ends, then measure cell voltage and input by the signal loading of sine wave AC variation
The phase difference of voltage is by calculating the parameter obtained.In the present embodiment, the detection circuit 300 is exchanged by the 1KHz of public technology
Constant current drive source and relevant high speed, high-resolution sampling system composition can pass through automatic (utilizing Inverse problem circuit) or hand
Flowing mode is connected on each single battery.
In some embodiments provided by the present application, the battery maintenance instrument further includes control panel 400, the control panel
400 connect with the governor circuit 100 and the multiple battery maintenance circuit 200, for realizing to the battery maintenance instrument into
Row manipulation.
In the present embodiment, the control panel 400 includes panel body, multi-functional socket array region, multiple battery packs
Cathode socket and multiple single battery charging jacks.The multi-functional socket array region, the multiple battery electrode socket
The panel body is all set in the multiple single battery charging jack.The multi-functional socket array region includes multiple
Multi-functional socket.The multi-functional socket is used to for single battery connecting with external extended function module.The multiple monomer electricity
Pond charging jack charges to single battery for connecting with single battery.
In the present embodiment, when carrying out electric voltage equalization in the battery pack group, by the multi-functional socket by described group
Interior DC-DC equilibrium branch 210 is connect with the anode of the single battery in the battery pack group, passes through the battery electrode socket
DC-DC equilibrium branch 210 in described group is connect with the cathode of the single battery, to be completed actively in the internal battery pack
Electric voltage equalization.When carrying out electric voltage equalization between multiple battery packs, by the multi-functional socket by DC-DC between described group
Maintenance branch 220 is connect with the anode of the battery pack, and DC-DC between described group is safeguarded branch by the battery electrode socket
Road 220 is connect with the cathode of the battery pack.
When the difference of the electricity and the average electricity of the single battery in the battery pack of any single battery is more than
It, can be by the single battery charging jack by the single battery DC-DC charging paths 240 and the list when preset range
The connection of body battery is charged by the single battery DC-DC charging paths 240 to the single battery.The single battery fills
Electrical outlet can be high current fast charging and discharging socket, can provide 0- by the monomer charging jack for the single battery
The electric current of 30A.The single battery charging jack can also be interface banana hair style connector.When the single battery need into
It can be the monocell quick charge by the single battery charging jack when row Fast-Maintenance.
Based on the same inventive concept, present invention also provides a kind of battery maintenance method, Fig. 4 is referred to.The battery dimension
Maintaining method includes:
Step S110 receives the operational order that governor circuit 100 is sent；
Step S120 carries out electricity to the single battery in the battery pack group being attached thereto according to the operational order
Pressure is balanced, and/or energy exchange carrying out group to multiple battery packs being attached thereto.
It is appreciated that active voltage equilibrium operation in group can be first carried out in the charging/discharging apparatus comprising multiple battery packs,
Energy exchange is made between carrying out group again.Energy exchange is made between group can also first be carried out, and then carries out active voltage equilibrium in group again and makees
Industry.Can also, while carrying out energy exchange between the interior active voltage equilibrium operation of group and group and making.
In some embodiments provided by the present application, the battery maintenance method includes:
Step S210 detects connected battery state by detection circuit 300, and is sent to governor circuit 100.Work as inspection
When slowdown monitoring circuit 300 detects wiring exception, governor circuit 100 will lock any operation；
Step S220, dimension needed for governor circuit 100 calculates acquisition battery pack and each battery unit according to battery status
Parameter is protected, operational order is sent；
Step S230 carries out electricity to the single battery in the battery pack group being attached thereto according to the operational order
Pressure is balanced, and/or carries out whole charge or discharge to the battery pack.
It is appreciated that in the application comprising multiple battery packs, it can be using one or more battery group as other
Or the whole charge and discharge power supply of multiple battery packs, and/or using one or more battery group as other one or more battery group groups
Interior balance charge/discharge source.It can work independently at this point, maintenance instrument does not need external power supply.
It is described according to the operational order in some embodiments provided by the present application, to the monomer in the battery pack group
Battery carries out electric voltage equalization, and/or energy exchange carrying out group to multiple battery packs, comprising:
According to the operational order, using DC-DC equilibrium branch 210 in organizing to the single battery in the battery pack group into
Row electric voltage equalization, and in the single battery completion group after electric voltage equalization, safeguard branch 220 to more using DC-DC between group
A battery pack carries out energy exchange between group；Or
According to the operational order, energy carrying out group to multiple battery packs using DC-DC maintenance branch 220 between group
Exchange, and between carrying out group after energy exchange, using DC-DC equilibrium branch 210 in organizing to the monomer in the battery pack group
Battery carries out electric voltage equalization；Or
According to the operational order, using DC-DC equilibrium branch 210 in organizing to the single battery in the battery pack group into
Row electric voltage equalization synchronizes energy exchange carrying out group to multiple battery packs using DC-DC maintenance branch 220 between group, with reality
Energy exchange now carrying out group to electric voltage equalization in the single battery completion group and between multiple battery packs.
In some embodiments provided by the present application, the method also includes:
Judge whether the difference of the electricity and the average electricity of the single battery in the battery pack of the single battery surpasses
Cross preset range；
When the difference of the average electricity of the single battery in the electricity of the single battery and the battery pack is more than default
It is that the single battery carries out charge or discharge using single battery DC-DC charging paths 240 when range.
To sum up, this application provides a kind of battery maintenance instrument and battery maintenance methods.The battery maintenance instrument includes master control
Circuit 100 and multiple battery maintenance circuits 200.The multiple battery maintenance circuit 200 is electrically connected with the governor circuit 100,
Operational order for being sent according to the governor circuit 100 carries out electric voltage equalization to the single battery in the battery pack group,
And/or energy exchange carrying out group to multiple battery packs.In battery maintenance instrument provided by the present application, pass through the multiple electricity
It is balanced and/or multiple to carry out active voltage according to operational order to the single battery in battery pack for pond maintenance circuitry 200
The battery pack realization carries out energy exchange between group, does not need to disassemble battery pack, and can safeguard multiple groups battery simultaneously,
Reduce the maintenance cost of battery pack.
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 several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (16)
1. a kind of battery maintenance instrument characterized by comprising
Governor circuit (100)；
Multiple battery maintenance circuits (200), are electrically connected with the governor circuit (100), for according to the governor circuit (100)
The operational order of transmission carries out electric voltage equalization to the single battery in the battery pack group being attached thereto, and/or to being attached thereto
Multiple battery packs carry out energy exchange between group.
2. battery maintenance instrument as described in claim 1, which is characterized in that the battery maintenance circuit (200) includes:
DC-DC equilibrium branch (210) in group, battery side is connect with single battery, and bus side is connect with Direct Power bus, with right
Single battery in the battery pack carries out electric voltage equalization；
DC-DC safeguards branch (220) between group, and battery side connect with the battery pack, bus side and regulation power bus or described
Dc power bus connection, to carry out group to multiple battery packs energy exchange；And
Switching branches (230) are connected between the battery anode and the Direct Power bus, to control the battery pack
With the conducting of the Direct Power bus.
3. battery maintenance instrument as claimed in claim 2, which is characterized in that DC-DC equilibrium branch (210) includes more in described group
A the first isolating transformer (211) in array distribution, the battery side of each first isolating transformer (211) and the list
The connection of body battery, bus side are connect with the dc power bus.
4. battery maintenance instrument as claimed in claim 3, which is characterized in that DC-DC equilibrium branch (210) further includes in described group
Multiple voltage control modules (212), the voltage control module (212) and first isolating transformer (211) correspond,
And the voltage control module (212) connects respectively with the governor circuit (100) and first isolating transformer (211)
It connects, the variable voltage signal for being provided according to the governor circuit (100) controls corresponding first isolating transformer
(211) charge or discharge are carried out for the single battery.
5. battery maintenance instrument as claimed in claim 3, which is characterized in that the work electricity of first isolating transformer (211)
Stream range is 0-10A.
6. battery maintenance instrument as claimed in claim 2, which is characterized in that DC-DC safeguards that branch (220) include the between described group
Two isolating transformers (221), battery side are connect with the battery pack, bus side and the regulation power bus or the direct current function
The connection of rate bus.
7. battery maintenance instrument as claimed in claim 6, which is characterized in that the work electricity of second isolating transformer (221)
Stream range is 0-20A.
8. battery maintenance instrument as claimed in claim 2, which is characterized in that the switching branches (230) include switching tube (M),
It is connected between the battery pack and the dc power bus.
9. battery maintenance instrument as claimed in claim 2, which is characterized in that the battery maintenance circuit (200) further include:
Single battery DC-DC charging paths (240), battery side is connect with single battery charging interface, bus side and the direct current
Power bus connection, the difference of the average electricity of the single battery in electricity and the battery pack of the single battery are more than
When preset range, charge or discharge are carried out for the single battery.
10. battery maintenance instrument as claimed in claim 9, which is characterized in that the single battery DC-DC charging paths (240)
Including third isolating transformer (241), battery side is connect with single battery, and bus side is connect with the dc power bus.
11. battery maintenance instrument as claimed in claim 10, which is characterized in that the work of the third isolating transformer (241)
Current range is 0-30A, to realize quick charge or electric discharge to the single battery.
12. battery maintenance instrument as described in claim 1, which is characterized in that further include:
At least one detection circuit (300), connect with the governor circuit (100), the monocell and the battery pack, uses
The single battery described in the detection signal detection provided according to the governor circuit (100) or the AC internal Resistance of the battery pack.
13. battery maintenance instrument as described in claim 1, which is characterized in that further include control panel (400), with the master control
Circuit (100) and the multiple battery maintenance circuit (200) connection, manipulate for realizing to the battery maintenance instrument.
14. a kind of battery maintenance method characterized by comprising
Receive the operational order that governor circuit (100) are sent；
According to the operational order, electric voltage equalization and/or right is carried out to the single battery in the battery pack group being attached thereto
Multiple battery packs being attached thereto carry out energy exchange between group.
15. battery maintenance method as claimed in claim 14, which is characterized in that it is described according to the operational order, to described
Single battery in battery pack group carries out electric voltage equalization, and/or energy exchange carrying out group to multiple battery packs, comprising:
According to the operational order, the single battery in the battery pack group is carried out using DC-DC equilibrium branch (210) in organizing
Electric voltage equalization, and in the single battery completion group after electric voltage equalization, safeguard branch (220) to more using DC-DC between group
A battery pack carries out energy exchange between group；Or
According to the operational order, energy is handed over carrying out group to multiple battery packs using DC-DC maintenance branch (220) between group
It changes, and between carrying out group after energy exchange, using DC-DC equilibrium branch (210) in organizing to the monomer in the battery pack group
Battery carries out electric voltage equalization；Or
According to the operational order, the single battery in the battery pack group is carried out using DC-DC equilibrium branch (210) in organizing
Electric voltage equalization synchronizes energy exchange carrying out group to multiple battery packs using DC-DC maintenance branch (220) between group, with reality
Energy exchange now carrying out group to electric voltage equalization in the single battery completion group and between multiple battery packs.
16. battery maintenance method as claimed in claim 14, which is characterized in that further include:
Whether the difference of the electricity for judging the single battery and the average electricity of the single battery in the battery pack is more than pre-
If range；
When the difference of the average electricity of the single battery in the electricity of the single battery and the battery pack is more than preset range
When, it is that the single battery carries out charge or discharge using single battery DC-DC charging paths (240).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160530.7A CN109273785A (en) | 2018-09-30 | 2018-09-30 | Battery maintenance instrument and battery maintenance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160530.7A CN109273785A (en) | 2018-09-30 | 2018-09-30 | Battery maintenance instrument and battery maintenance method |
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| CN109273785A true CN109273785A (en) | 2019-01-25 |
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| CN201811160530.7A Pending CN109273785A (en) | 2018-09-30 | 2018-09-30 | Battery maintenance instrument and battery maintenance method |
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