CN106450523A - ARM control based high current equalization method for lithium manganese oxide battery - Google Patents
ARM control based high current equalization method for lithium manganese oxide battery Download PDFInfo
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- CN106450523A CN106450523A CN201610990932.4A CN201610990932A CN106450523A CN 106450523 A CN106450523 A CN 106450523A CN 201610990932 A CN201610990932 A CN 201610990932A CN 106450523 A CN106450523 A CN 106450523A
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- lithium manganate
- manganate battery
- contactor
- battery
- voltage
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- H01M10/44—Methods for charging or discharging
-
- 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
-
- 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
-
- 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)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an ARM control based high current equalization method for a lithium manganese oxide battery. A lithium manganese oxide battery control system is arranged and comprises at least two lithium manganese oxide cells connected in series, first contactors, second contactors, a high current discharge resistor, a lithium manganese oxide cell voltage detection module, an ARM controller and a protection device, wherein each of the number of the first contactors and the number of the second contactors is equal to the number of the lithium manganese oxide cells. The ARM controller obtains voltage of each lithium manganese oxide cell through the lithium manganese oxide cell voltage detection module, and when the balance degree of the lithium manganese oxide cells is higher than a set threshold value, the lithium manganese oxide cell with the highest voltage is discharged through the high current discharge resistor according to set time. The ARM is taken as the main equalization controller to increase the control speed. High current discharge of the lithium manganese oxide battery is realized in a contactor matrix manner, so that the equalization reliability is improved, and high current discharge is realized. The method is simple to operate, safe and reliable, and the equalization effect is good.
Description
Technical field
The invention belongs to the balancing technique field of lithium battery group, particularly to a kind of lithium manganate battery based on ARM control
High current equalization methods.
Background technology
The development of fuel-engined vehicle causes the huge consumption of petroleum resources, the continuous intensification of global energy crisis, simultaneously plus
The acute harm of greenhouse effects and atmosphere pollution.Most countries, government and Automobile Enterprises are all it is well recognized that save in the world
Can reduce 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 a noise, emission-free discharge, environmental friendliness, and the thermal efficiency is high, discharges low, recoverable, improves energy resource structure etc.
Advantage.Each automobile production enterprise is just actively researching and developing electric automobile, and Chinese Government also promotes electric automobile positive.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.
Lithium manganate battery is with LiMn2O4As the positive level of battery, it is connected with other positive poles by aluminium foil, centre is polymer
Barrier film, it separates positive pole and negative pole, lithium ion can by and electronics can not pass through, the right is born by the battery that carbon forms
Pole, is connected with the negative pole of battery by Copper Foil.Battery be between the upper and lower ends battery electrolyte, battery by metal shell close envelope
Dress.Lithium manganate battery is superior due to its discharge performance, can extensively apply in dynamical system.
Because each monomer of lithium manganate battery group is all different individualities, in production technology, the factor such as production time is led
Send a telegraph pond performance indications and there is difference.Although with the continuous progress of technology, the difference before dispatching from the factory, between lithium manganate battery inside
Constantly reduce, but during using, faint inconsistency constantly can be amplified with use condition.Such inconsistency
Will be increasing with design load deviation for the capacity leading to whole group lithium manganate battery.In charging process, the little monomer of capacity is by head
First it is filled, lead to the battery of other capacity can not obtain enough capacity；In discharge process, the little monomer of capacity first by
Discharge into blanking voltage, whole group battery will stop electric discharge.The presence of such problem of inconsistency, causes lithium manganate battery group
The aspect such as active volume and service life is far away from cell, and increases difficulty battery being managed and controlling.
Practice have shown that, occur capacity significantly to reduce when the consistency problem of battery pack develops into Individual cells, the feelings such as internal resistance significantly improves
During condition, the performance of whole group battery can be in short time high progression, so that whole battery pack is scrapped.
In order to solve lithium manganate battery group problem of inconsistency, there has been proposed the balancing technique of lithium manganate battery.Equilibrium
The voltage to the effect that detecting lithium manganate battery group of management, the parameter such as electric current, these parameters are identified, analyze battery
Uniformity, discharged by the control device monomer high to energy body, so that the state of each monomer is reached unanimity.By having
The Balance route strategy of effect and equalizing circuit can improve the consistency problem of battery pack, can extend the life-span of battery pack, fall
The maintenance cost of low battery pack, makes the electric automobile that safe and efficient intelligence uses put it over.
Equalization methods general at present are to configure a discharge resistance to each lithium manganate battery, by checking each monomer
Voltage, the monomer higher to monomer discharged by oneself corresponding discharge resistance.When lithium manganate cell volume compares
When big, this discharge resistance discharge current would become hard to meet the requirement of fast uniform.If put corresponding for each lithium manganate battery
Electric resistor power becomes big, and, by the face of new challenge, existing using resistance, method seldom has high current in a balanced way for its volume and radiating
Method in a balanced way.
Content of the invention
It is an object of the invention to provide a kind of lithium manganate battery high current equalization methods based on ARM control.
Concretely comprise the following steps：
(1) a set of lithium manganate battery control system is set, including lithium manganate battery group, heavy-current discharge resistance, lithium manganate battery
Voltage detection module, ARM controller and protection device, wherein lithium manganate battery group include the LiMn2O4 electricity of at least two series connection
Pond, all corresponding first contactor of each lithium manganate battery and a second contactor；The positive pole of lithium manganate battery passes through it
Corresponding first contactor is connected to the first end of heavy-current discharge resistance, the negative pole of lithium manganate battery pass through its corresponding second
Contactor is connected to the second end of heavy-current discharge resistance；The positive pole of lithium manganate battery and negative pole and lithium manganate battery voltage detecting
Module can be connected with being energized；ARM controller includes CAN terminal and control terminal, and CAN terminal is examined with lithium manganate battery voltage
Survey module to connect, control terminal is connected with the control terminal of first contactor and second contactor；ARM controller controls LiMn2O4 electricity
When the corresponding first contactor in pond and second contactor conducting, lithium manganate battery and heavy-current discharge resistor coupled in parallel, synchronization
Only one of which lithium manganate battery and heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse,
D.C. contactor and resettable fuse are connected to the negative pole of lithium manganate battery group after being cascaded.
Described lithium manganate battery is monomer lithium manganate battery or by multiple basic mangaic acids for basic lithium manganate battery unit
The lithium manganate battery brick that lithium cells compose in parallel.
(2) the lithium manganate battery control system that step (1) is arranged is run according to following steps：
A. ARM controller is communicated with lithium manganate battery voltage detection module, obtains the voltage of each lithium manganate battery.
B. ARM controller, according to the N number of lithium manganate battery voltage obtaining, finds out the maximum lithium manganate battery of voltage, wherein
N is more than or equal to 2.
C. ARM controller obtains the average voltage of all lithium manganate batteries.
D. when the maximum voltage of lithium manganate battery of voltage is set more than one with the average voltage deviations of all lithium manganate batteries
Determine to jump into step e during threshold values, otherwise return to step a.
E. ARM controller is by the maximum corresponding first contactor of lithium manganate battery of control voltage and second contactor
Make the maximum lithium manganate battery of voltage and heavy-current discharge resistor coupled in parallel, lithium manganate battery is discharged.
F. wait the time T of setting, ARM controller disconnects all contactless contactors by control terminal, program returns step
Rapid a.
(3) complete the lithium manganate battery high current equilibrium that step (2) is realized controlling based on ARM.
The present invention uses a set of lithium manganate battery control system, and this system includes the charge and discharge balancing dress of lithium manganate battery
Put, so that lithium manganate battery is effectively managed in charge and discharge process and equalize, to improve the efficiency of lithium manganate battery and to make
With the life-span, and reduce the maintenance cost of lithium manganate battery.The present invention adopts ARM as primary equalization controller, improves and controls speed
Degree.The present invention adopts contactor matrix-style, realizes the heavy-current discharge to lithium manganate battery, to improve reliability in a balanced way,
And realize heavy-current discharge.The inventive method is simple to operate, safe and reliable, and portfolio effect is good.
Brief description
Fig. 1 is the structural representation of lithium manganate battery control system used in the embodiment of the present invention.
Fig. 2 is the balance control method flow chart in embodiment of the present invention charge and discharge process.
Specific embodiment
Embodiment：
The present invention is further described below in conjunction with the accompanying drawings.
Hereinafter describe for disclosing the present invention so that those skilled in the art are capable of the present invention.Excellent in below describing
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.Define in the following description
The general principle of the present invention can apply to other embodiments, deformation program, improvement project, equivalent and not do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
As shown in figure 1, a kind of lithium manganate battery high current equalization methods based on ARM control, concretely comprise the following steps：
(1) a set of lithium manganate battery control system is set, including lithium manganate battery group, heavy-current discharge resistance R（Carry radiator
High-power resistance）, lithium manganate battery voltage detection module, ARM controller and protection device, wherein lithium manganate battery group includes
The lithium manganate battery of at least two series connection, all corresponding first contactor of each lithium manganate battery and a second contactor；
The positive pole of lithium manganate battery is connected to the first end of heavy-current discharge resistance R, LiMn2O4 electricity by its corresponding first contactor
The negative pole in pond is connected to second end of heavy-current discharge resistance R by its corresponding second contactor；The positive pole of lithium manganate battery
Can be connected with being energized with lithium manganate battery voltage detection module with negative pole；ARM controller includes CAN terminal and control end
Son, CAN terminal is connect with lithium manganate battery voltage detection module, the control end of control terminal and first contactor and second contactor
Son connects；ARM controller control the corresponding first contactor of lithium manganate battery and second contactor conducting when, lithium manganate battery with
Heavy-current discharge resistance R is in parallel, and synchronization only one of which lithium manganate battery is in parallel with heavy-current discharge resistance R；Protection device
Including D.C. contactor and resettable fuse, D.C. contactor and resettable fuse are connected to LiMn2O4 after being cascaded
The negative pole of battery pack.
Described lithium manganate battery is monomer lithium manganate battery for basic lithium manganate battery unit.
The negative pole of equilibrium object lithium manganate battery 1 is connected with the positive pole of Jun Heng object lithium manganate battery 2, described equilibrium object
The negative pole of lithium manganate battery 2 is connected with the positive pole of Jun Heng object lithium manganate battery 3, is sequentially connected in series each equilibrium object LiMn2O4 electricity
Pond, the positive pole of negative pole and Jun Heng object lithium manganate battery N until equalizing object lithium manganate battery N-1 connects, all LiMn2O4s
Battery is sequentially connected in series lithium manganate battery group, and in described lithium manganate battery group, described equilibrium object lithium manganate battery 1 is just
The positive pole of extremely described lithium manganate battery group, the negative pole of described equilibrium object lithium manganate battery N is described lithium manganate battery group
Negative pole.
The positive pole of each described equilibrium object lithium manganate battery is by corresponding described first contactor and described high current
The first end of discharge resistance R connects, and the negative pole of each described equilibrium object lithium manganate battery passes through corresponding described second contact
Device is connected with second end of described heavy-current discharge resistance R, the control terminal K of described first contactor and described second contactor
It is connected with the control terminal of described ARM controller after parallel connection.
The positive pole of the D1 terminal of each described first contactor and described Jun Heng object lithium manganate battery connects, D2 terminal with
The first end of described heavy-current discharge resistance R connects, and control terminal K is connected with ARM control terminal.
The negative pole of the D1 terminal of each described second contactor and described Jun Heng object lithium manganate battery connects, D2 terminal with
Second end of described heavy-current discharge resistance R connects, and control terminal K is connected with ARM control terminal.
Described lithium manganate battery voltage detection module can be energized to ground with the positive pole of described lithium manganate battery and negative pole
It is connected, for detecting the voltage of each lithium manganate battery；Linked with described ARM controller by CAN, to ARM control
Device processed sends detected voltage signal.
(2) as shown in Fig. 2 the lithium manganate battery control system that step (1) is arranged is run according to following steps：
A. ARM controller is communicated with lithium manganate battery voltage detection module, obtains the voltage of each lithium manganate battery.
B. ARM controller, according to the N number of lithium manganate battery voltage obtaining, finds out the maximum lithium manganate battery of voltage, wherein
N is more than or equal to 2.
C. ARM controller obtains the average voltage of all lithium manganate batteries.
D. when the maximum voltage of lithium manganate battery of voltage is set more than one with the average voltage deviations of all lithium manganate batteries
Determine to jump into step e during threshold values, otherwise return to step a.
E. ARM controller is by the maximum corresponding first contactor of lithium manganate battery of control voltage and second contactor
Make the maximum lithium manganate battery of voltage and heavy-current discharge resistor coupled in parallel, lithium manganate battery is discharged.
F. wait the time T of setting, ARM controller disconnects all contactless contactors by control terminal, program returns step
Rapid a.
(3) complete the lithium manganate battery high current equilibrium that step (2) is realized controlling based on ARM.
Claims (1)
1. a kind of lithium manganate battery high current equalization methods based on ARM control are it is characterised in that concretely comprise the following steps：
(1) a set of lithium manganate battery control system is set, including lithium manganate battery group, heavy-current discharge resistance, lithium manganate battery
Voltage detection module, ARM controller and protection device, wherein lithium manganate battery group include the LiMn2O4 electricity of at least two series connection
Pond, all corresponding first contactor of each lithium manganate battery and a second contactor；The positive pole of lithium manganate battery passes through it
Corresponding first contactor is connected to the first end of heavy-current discharge resistance, the negative pole of lithium manganate battery pass through its corresponding second
Contactor is connected to the second end of heavy-current discharge resistance；The positive pole of lithium manganate battery and negative pole and lithium manganate battery voltage detecting
Module can be connected with being energized；ARM controller includes CAN terminal and control terminal, and CAN terminal is examined with lithium manganate battery voltage
Survey module to connect, control terminal is connected with the control terminal of first contactor and second contactor；ARM controller controls LiMn2O4 electricity
When the corresponding first contactor in pond and second contactor conducting, lithium manganate battery and heavy-current discharge resistor coupled in parallel, synchronization
Only one of which lithium manganate battery and heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse,
D.C. contactor and resettable fuse are connected to the negative pole of lithium manganate battery group after being cascaded；
Described lithium manganate battery is monomer lithium manganate battery or by multiple basic LiMn2O4s electricity for basic lithium manganate battery unit
The lithium manganate battery brick that pool unit composes in parallel；
(2) the lithium manganate battery control system that step (1) is arranged is run according to following steps：
A. ARM controller is communicated with lithium manganate battery voltage detection module, obtains the voltage of each lithium manganate battery；
B. ARM controller, according to the N number of lithium manganate battery voltage obtaining, finds out the maximum lithium manganate battery of voltage, and wherein N is big
In equal to 2；
C. ARM controller obtains the average voltage of all lithium manganate batteries；
D. when the voltage of the maximum lithium manganate battery of voltage and the average voltage deviations of all lithium manganate batteries are more than a setting valve
Jump into step e during value, otherwise return to step a；
E. ARM controller makes electricity by the maximum corresponding first contactor of lithium manganate battery of control voltage and second contactor
The maximum lithium manganate battery of pressure and heavy-current discharge resistor coupled in parallel, discharge to lithium manganate battery；
F. wait the time T of setting, ARM controller disconnects all contactless contactors, program return to step a by control terminal；
(3) complete the lithium manganate battery high current equilibrium that step (2) is realized controlling based on ARM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990932.4A CN106450523A (en) | 2016-11-11 | 2016-11-11 | ARM control based high current equalization method for lithium manganese oxide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990932.4A CN106450523A (en) | 2016-11-11 | 2016-11-11 | ARM control based high current equalization method for lithium manganese oxide battery |
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| CN106450523A true CN106450523A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610990932.4A Pending CN106450523A (en) | 2016-11-11 | 2016-11-11 | ARM control based high current equalization method for lithium manganese oxide battery |
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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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| CN1607708A (en) * | 2003-10-13 | 2005-04-20 | 上海燃料电池汽车动力系统有限公司 | Equalizing circuit for lithium ion power accumulator |
| CN102064568A (en) * | 2010-10-11 | 2011-05-18 | 中国科学院青岛生物能源与过程研究所 | Active equalizing and protecting system of stackable series-connected lithium battery |
| CN105811536A (en) * | 2016-05-22 | 2016-07-27 | 桂林理工大学 | Singlechip microcomputer control base large current balancing method of lithium manganate battery |
| CN106129493A (en) * | 2016-07-19 | 2016-11-16 | 桂林理工大学 | A kind of lithium manganate battery big current balance method controlled based on DSP |
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2016
- 2016-11-11 CN CN201610990932.4A patent/CN106450523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607708A (en) * | 2003-10-13 | 2005-04-20 | 上海燃料电池汽车动力系统有限公司 | Equalizing circuit for lithium ion power accumulator |
| CN102064568A (en) * | 2010-10-11 | 2011-05-18 | 中国科学院青岛生物能源与过程研究所 | Active equalizing and protecting system of stackable series-connected lithium battery |
| CN105811536A (en) * | 2016-05-22 | 2016-07-27 | 桂林理工大学 | Singlechip microcomputer control base large current balancing method of lithium manganate battery |
| CN106129493A (en) * | 2016-07-19 | 2016-11-16 | 桂林理工大学 | A kind of lithium manganate battery big current balance method controlled based on DSP |
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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Application publication date: 20170222 |