CN106100048A - Ternary lithium battery big current balance DSP control system - Google Patents
Ternary lithium battery big current balance DSP control system Download PDFInfo
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- CN106100048A CN106100048A CN201610566018.7A CN201610566018A CN106100048A CN 106100048 A CN106100048 A CN 106100048A CN 201610566018 A CN201610566018 A CN 201610566018A CN 106100048 A CN106100048 A CN 106100048A
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- lithium battery
- ternary lithium
- catalyst
- ternary
- heavy
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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
-
- 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
-
- 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)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of ternary lithium battery big current balance DSP control system.This ternary lithium battery big current balance DSP control system includes the first catalyst and the second catalyst, heavy-current discharge resistance, ternary lithium battery voltage detection module, dsp controller and the protection device that ternary lithium battery that at least two is connected is equal with ternary lithium battery quantity.Dsp controller obtains each ternary lithium battery voltage by ternary lithium battery voltage detection module, and the equilibrium degree between ternary lithium battery is more than when setting threshold values, by ternary lithium battery maximum for voltage according to the time set by heavy-current discharge conductive discharge.Native system uses DSP as primary equalization controller, improves and controls speed；Native system uses catalyst matrix-style, it is achieved the heavy-current discharge to ternary lithium battery, to improve the reliability of equilibrium, and realizes heavy-current discharge；Native system simple in construction, easy to operate, safe and reliable, portfolio effect is good.
Description
Technical field
The invention belongs to the balancing technique field of lithium battery group, particularly to a kind of ternary lithium battery big current balance DSP
Control system.
Background technology
The development of fuel-engined vehicle causes the huge consumption of petroleum resources, the continuous intensification of global energy crisis, adds simultaneously
The acute harm of greenhouse effect and atmospheric pollution.Most countries, government and Automobile Enterprises are all it is well recognized that save in the world
Energy reduction of discharging is the developing direction of future automobile industry, and Development of EV will be the optimum method solving this difficult point.Electronic
It is low that automobile has noise, emission-free discharge, environmental friendliness, and the thermal efficiency is high, discharges low, and recoverable improves energy resource structure etc.
Advantage.Each automobile production enterprise the most actively researches and develops electric automobile, and Chinese Government is also actively promoting electric automobile.Electric automobile root
Pure electric automobile, hybrid-electric car and FC-EV can be roughly divided into according to power source.These electric automobiles one
As can configure battery as energy-storage travelling wave tube, particularly in pure electric automobile extensively application multi-string battery as power source.
Ternary lithium battery, is connected with other positive poles by aluminium foil using trielement composite material as the positive level of battery, and centre is poly-
The barrier film of compound, it separates positive pole and negative pole, lithium ion can by and electronics can not pass through, the electricity that the right is made up of carbon
Pond negative pole, is connected with the negative pole of battery by Copper Foil.Battery is the electrolyte of battery between the upper and lower ends, and battery is sealed by metal shell
Close encapsulation.Ternary lithium battery is superior due to its discharge performance, can extensively apply in dynamical system.
Owing to each monomer of ternary lithium battery group is all different individuality, in production technology, the factor such as production time is led
Send a telegraph pond performance indications and there is difference.Although along with the continuous progress of technology, the difference before dispatching from the factory, between ternary lithium battery interior
Constantly reduce, but during using, faint discordance constantly can be amplified along with use condition.Such discordance
By increasing with design load deviation for the capacity that causes whole group of ternary lithium battery.In charging process, the little monomer of capacity is by head
First it is filled, causes the battery of other capacity can not obtain enough capacity；In discharge process, the little monomer of capacity first by
Discharging into blanking voltage, stopping is discharged by whole Battery pack.The existence of such problem of inconsistency, causes ternary lithium battery group
Active volume and service life etc., aspect was far away from cell, and increased the difficulty being managed battery and controlling.
Practice have shown that, significantly reduce when the consistency problem of set of cells develops into Individual cells generation capacity, internal resistance such as significantly improves at the feelings
During condition, the performance of whole Battery pack can be at short time high progression, so that whole set of cells is scrapped.
In order to solve ternary lithium battery group problem of inconsistency, there has been proposed the balancing technique of ternary lithium battery.Equilibrium
The voltage to the effect that detecting ternary lithium battery group of management, the parameter such as electric current, these parameters are identified, analyze battery
Concordance, by control device the monomer of energy height is discharged, make the state of each monomer reach unanimity.Pass through
Effective Balance route strategy and equalizing circuit can improve the consistency problem of set of cells, it is possible to extend the life-span of set of cells,
Reducing the maintenance cost of set of cells, the electric automobile making safe and efficient intelligence use puts it over.
The most general equalization methods is that each ternary lithium battery is configured a discharge resistance, by checking each monomer
Voltage, the monomer that monomer is higher is discharged by the discharge resistance of oneself correspondence.When ternary lithium battery capacity compares
Time big, this discharge resistance discharge current would become hard to meet the requirement of fast uniform.If by each corresponding putting of ternary lithium battery
Electricity resistor power becomes big, and its volume and heat radiation are by the face of new challenge, and the system of existing employing resistance equilibrium seldom has big electric current
The system of equilibrium.
Summary of the invention
It is an object of the invention to provide a kind of ternary lithium battery big current balance DSP control system.
The present invention is achieved in that a kind of ternary lithium battery big current balance DSP control system, including ternary lithium battery
Group, heavy-current discharge resistance, ternary lithium battery voltage detection module, dsp controller and protection device, wherein ternary lithium battery group
Including the ternary lithium battery of at least two series connection, all corresponding first catalyst of each ternary lithium battery and one second contact
Device；The positive pole of each ternary lithium battery is connected to the first end of heavy-current discharge resistance by the first catalyst of its correspondence, often
The negative pole of individual ternary lithium battery is connected to the second end of heavy-current discharge resistance by the second catalyst of its correspondence；Ternary lithium electricity
Pond positive pole can be connected with ternary lithium battery voltage detection module with negative pole with being energized；Dsp controller includes CAN terminal and control
Terminal processed, CAN terminal is connected with ternary lithium battery voltage detection module, control terminal and the first catalyst and the second catalyst
Control terminal connects；When dsp controller controls the first catalyst corresponding to ternary lithium battery and the conducting of the second catalyst, ternary lithium
Battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which ternary lithium battery and heavy-current discharge resistor coupled in parallel；Protection
Device includes that D.C. contactor and resettable fuse, D.C. contactor and resettable fuse are cascaded and is followed by ternary
The negative pole of lithium battery group.
Described ternary lithium battery is basic ternary lithium cells i.e. monomer terpoiymer lithium battery or by multiple basic ternarys
The ternary lithium battery brick that lithium cells composes in parallel.
The ternary lithium battery big current balance DSP control system of the present invention includes the charge and discharge balancing dress of ternary lithium battery
Put, make ternary lithium battery system effectively be managed in charge and discharge process and equalize, to improve ternary lithium battery system
Efficiency and service life, and reduce the maintenance cost of ternary lithium electricity system；Native system use DSP as primary equalization controller,
Improve and control speed；Native system uses catalyst matrix-style, it is achieved the heavy-current discharge to ternary lithium battery, to improve equilibrium
Reliability, and realize heavy-current discharge；Native system simple in construction, easy to operate, safe and reliable, portfolio effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of ternary lithium battery big current balance DSP control system in the embodiment of the present invention.
Fig. 2 is the equilibrium in the embodiment of the present invention in ternary lithium battery big current balance DSP control system charge and discharge process
Control method flow chart.
Detailed description of the invention
Embodiment:
The present invention is further described below in conjunction with the accompanying drawings.
Hereinafter describe and be used for disclosing the present invention so that those skilled in the art are capable of the present invention.Below describe in excellent
Select embodiment to be only used as citing, it may occur to persons skilled in the art that other obvious modification.Define in the following description
The ultimate principle of the present invention can apply to other embodiments, deformation program, improvement project, equivalent and the not back of the body
Other technologies scheme from the spirit and scope of the present invention.
As it is shown in figure 1, a kind of ternary lithium battery big current balance DSP control system, including ternary lithium battery group, big electric current
Discharge resistance R (carrying the high-power resistance of radiator), ternary lithium battery voltage detection module, dsp controller and protection device,
Wherein ternary lithium battery group includes at least two ternary lithium batteries connected, all corresponding one first contact of each ternary lithium battery
Device and second catalyst；The positive pole of each ternary lithium battery is connected to heavy-current discharge by the first catalyst of its correspondence
First end of resistance R, the negative pole of each ternary lithium battery is connected to heavy-current discharge resistance R by the second catalyst of its correspondence
The second end；Ternary lithium battery anode can be connected with ternary lithium battery voltage detection module with negative pole with being energized；DSP controls
Device includes that CAN terminal and control terminal, CAN terminal are connected with ternary lithium battery voltage detection module, and control terminal and first connects
The control terminal of tentaculum and the second catalyst connects；Dsp controller controls the first catalyst and second that ternary lithium battery is corresponding
During catalyst conducting, ternary lithium battery is in parallel with heavy-current discharge resistance R, synchronization only one of which ternary lithium battery and big electricity
Stream discharge resistance R is in parallel；Protection device includes D.C. contactor and resettable fuse, D.C. contactor and resettable fuse
It is cascaded and is followed by the negative pole of ternary lithium battery group.
Described ternary lithium battery is basic ternary lithium cells i.e. monomer terpoiymer lithium battery.
The negative pole of equilibrium object ternary lithium battery 1 connects with the positive pole of Jun Heng object ternary lithium battery 2, described equilibrium object
The negative pole of ternary lithium battery 2 connects with the positive pole of Jun Heng object ternary lithium battery 3, is sequentially connected in series each equilibrium object ternary lithium electricity
Pond, until the negative pole of equilibrium object ternary lithium battery N-1 connects with the positive pole of Jun Heng object ternary lithium battery N, all ternary lithiums
Battery is sequentially connected in series ternary lithium battery group, and in described ternary lithium battery group, described equilibrium object ternary lithium battery 1 is just
The positive pole of the most described ternary lithium battery group, the negative pole of described equilibrium object ternary lithium battery N is described ternary lithium battery group
Negative pole.
The positive pole of each described equilibrium object ternary lithium battery is by corresponding described first catalyst and described big electric current
First end of discharge resistance R connects, and the negative pole of each described equilibrium object ternary lithium battery is by corresponding described second contact
Device is connected with second end of described heavy-current discharge resistance R, described first catalyst and the control terminal K of described second catalyst
After parallel connection, the control terminal with described dsp controller is connected.
The positive pole of the D1 terminal of each described first catalyst and described equilibrium object ternary lithium battery connects, D2 terminal with
First end of described heavy-current discharge resistance R connects, and control terminal K and DSP control terminal is connected.
The negative pole of the D1 terminal of each described second catalyst and described equilibrium object ternary lithium battery connects, D2 terminal with
Second end of described heavy-current discharge resistance R connects, and control terminal K and DSP control terminal is connected.
Described ternary lithium battery voltage detection module can be energized to ground with positive pole and the negative pole of described ternary lithium battery
It is connected, for detecting the voltage of each ternary lithium battery；Linked with described dsp controller by CAN, control to DSP
Device processed sends the voltage signal detected.
As in figure 2 it is shown, the ternary lithium battery big current balance DSP control system of the present embodiment is run according to following steps:
A. dsp controller communicates with ternary lithium battery voltage detection module, it is thus achieved that the voltage of each ternary lithium battery.
B. dsp controller is according to the N number of ternary lithium battery voltage obtained, and finds out the ternary lithium battery that magnitude of voltage is maximum, its
Middle N is more than or equal to 2.
C. dsp controller obtains the average voltage of all ternary lithium batteries.
D. set more than one with the average voltage deviations of all ternary lithium batteries when the ternary lithium battery voltage of magnitude of voltage maximum
Determine to jump into step e during threshold values, otherwise return to step a.
E. DSP makes magnitude of voltage by controlling the first catalyst corresponding to voltage maximum ternary lithium battery and the second catalyst
Maximum ternary lithium battery and heavy-current discharge resistor coupled in parallel, discharge to ternary lithium battery.
F. waiting the time T of setting, dsp controller disconnects all contactless contactors by control terminal, and program returns step
Rapid a.
Claims (1)
1. a ternary lithium battery big current balance DSP control system, it is characterised in that this ternary lithium battery big current balance DSP
Control system includes ternary lithium battery group, heavy-current discharge resistance, ternary lithium battery voltage detection module, dsp controller and guarantor
Protection unit, wherein ternary lithium battery group includes at least two ternary lithium batteries connected, each ternary lithium battery all corresponding
First catalyst and second catalyst；The positive pole of each ternary lithium battery is connected to greatly by the first catalyst of its correspondence
First end of current discharge resistance, the negative pole of each ternary lithium battery is connected to big electric current by the second catalyst of its correspondence and puts
Second end of electricity resistance；Ternary lithium battery anode can be connected with ternary lithium battery voltage detection module with negative pole with being energized；
Dsp controller includes that CAN terminal and control terminal, CAN terminal are connected with ternary lithium battery voltage detection module, control terminal with
The control terminal of the first catalyst and the second catalyst connects；Dsp controller controls the first catalyst that ternary lithium battery is corresponding
During with the second catalyst conducting, ternary lithium battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which ternary lithium battery
With heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse, D.C. contactor and self-recoverage
Electric fuse is cascaded and is followed by the negative pole of ternary lithium battery group；
Described ternary lithium battery be basic ternary lithium cells i.e. monomer terpoiymer lithium battery or by multiple basic ternary lithiums electricity
The ternary lithium battery brick that pool unit composes in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566018.7A CN106100048A (en) | 2016-07-19 | 2016-07-19 | Ternary lithium battery big current balance DSP control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610566018.7A CN106100048A (en) | 2016-07-19 | 2016-07-19 | Ternary lithium battery big current balance DSP control system |
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| CN106100048A true CN106100048A (en) | 2016-11-09 |
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| CN201610566018.7A Pending CN106100048A (en) | 2016-07-19 | 2016-07-19 | Ternary lithium battery big current balance DSP control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2704116C1 (en) * | 2019-03-13 | 2019-10-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Method of charging lithium-ion accumulator batteries from n series-connected batteries with balancing resistors connected to them through switches |
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