CN106130111A - A kind of lead-acid battery big current balance method controlled based on DSP - Google Patents
A kind of lead-acid battery big current balance method controlled based on DSP Download PDFInfo
- Publication number
- CN106130111A CN106130111A CN201610565928.3A CN201610565928A CN106130111A CN 106130111 A CN106130111 A CN 106130111A CN 201610565928 A CN201610565928 A CN 201610565928A CN 106130111 A CN106130111 A CN 106130111A
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- Prior art keywords
- lead
- acid battery
- catalyst
- dsp
- voltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- 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)
Abstract
The invention discloses a kind of lead-acid battery big current balance method controlled based on DSP.A set of lead-acid battery control system is set, including the lead-acid battery of at least two series connection, equal the first catalyst of described lead-acid battery quantity and the second catalyst, heavy-current discharge resistance, lead-acid battery voltage detection module, dsp controller and protection device.Dsp controller obtains each lead-acid battery voltage by lead-acid battery voltage detection module, and the equilibrium degree between lead-acid battery is more than when setting threshold values, by lead-acid battery maximum for voltage according to the time set by heavy-current discharge conductive discharge.The present invention uses DSP as primary equalization controller, reduces the cost of system；The present invention uses catalyst matrix-style, it is achieved the heavy-current discharge to lead-acid battery, to improve the reliability of equilibrium, and realizes heavy-current discharge；The inventive method is simple to operate, safe and reliable, and portfolio effect is good.
Description
Technical field
The invention belongs to the balancing technique field of set of cells, particularly to a kind of big electricity of lead-acid battery controlled based on DSP
Stream equalization methods.
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.
Lead-acid battery is that a kind of electrode is mainly made up of lead and oxide thereof, and electrolyte is the accumulator of sulfuric acid solution.Lead
Under acid battery charge state, positive pole is mainly composed of Lead oxide brown, and negative pole is mainly composed of lead；Under discharge condition, both positive and negative polarity
Main component is lead sulfate.
Owing to each monomer of lead-acid battery group is all different individuality, in production technology, the factor such as production time causes
There is difference in battery performance index.Although along with the continuous progress of technology, before dispatching from the factory, the difference between lead-acid battery inside is continuous
Reduce, but during using, faint discordance constantly can be amplified along with use condition.Such discordance will be led
The capacity causing whole group of lead-acid battery is increasing with design load deviation.In charging process, first the monomer that capacity is little will be filled
Full, cause the battery of other capacity can not obtain enough capacity；In discharge process, first the monomer that capacity is little is discharged into
Blanking voltage, stopping is discharged by whole Battery pack.The existence of such problem of inconsistency, causes the active volume of lead-acid battery group
With aspects such as service lifes far away from cell, and increase difficulty battery being managed and controlling.Practice have shown that,
Significantly reduce when the consistency problem of set of cells develops into Individual cells generation capacity, when internal resistance such as significantly improves at the situation, whole group
The performance of battery can be at short time high progression, so that whole set of cells is scrapped.
In order to solve lead-acid battery group problem of inconsistency, there has been proposed the balancing technique of lead-acid battery.Balanced management
The voltage to the effect that detecting lead-acid battery group, the parameter such as electric current, these parameters are identified, analyze the consistent of battery
Property, by controlling device, the monomer of energy height is discharged, make the state of each monomer reach unanimity.By effective equal
Weighing apparatus control 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, reduce battery
The maintenance cost of group, the electric automobile making safe and efficient intelligence use puts it over.
The most general equalization methods is that each lead-acid battery is configured a discharge resistance, by checking each monomer
Voltage, is discharged by the discharge resistance of oneself correspondence to the monomer that monomer is higher.When lead-acid battery capacity is bigger,
This discharge resistance discharge current would become hard to meet the requirement of fast uniform.If by discharge resistance merit corresponding for each lead-acid battery
Rate becomes big, and its volume and heat radiation are by the face of new challenge, and the method for existing employing resistance equilibrium seldom has the side of big current balance
Method.
Summary of the invention
It is an object of the invention to provide a kind of lead-acid battery big current balance method controlled based on DSP.
Concretely comprise the following steps:
(1) a set of lead-acid battery control system is set, including lead-acid battery group, heavy-current discharge resistance, the inspection of lead-acid battery voltage
Surveying module, dsp controller and protection device, wherein lead-acid battery group includes at least two lead-acid batteries connected, each plumbic acid
All corresponding first catalyst of battery and second catalyst；The positive pole of each lead-acid battery connects by the first of its correspondence
Tentaculum is connected to the first end of heavy-current discharge resistance, and the negative pole of each lead-acid battery is connected by the second catalyst of its correspondence
The second end in heavy-current discharge resistance；Lead-acid battery positive pole and negative pole and lead-acid battery voltage detection module can be energized ground phase
Connect；Dsp controller includes that CAN terminal and control terminal, CAN terminal are connected with lead-acid battery voltage detection module, controls end
Son is connected with the control terminal of the first catalyst and the second catalyst；Dsp controller controls the first contact that lead-acid battery is corresponding
When device and the conducting of the second catalyst, lead-acid battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which lead-acid battery with
Heavy-current discharge resistor coupled in parallel；Protection device includes that D.C. contactor and resettable fuse, D.C. contactor and self-recoverage are protected
Danger silk is cascaded and is followed by the negative pole of lead-acid battery group.
Described lead-acid battery is basic lead-acid battery cells i.e. monomer lead-acid battery or by multiple basic lead-acid battery lists
The lead-acid battery brick that unit composes in parallel.
(2) the lead-acid battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with lead-acid battery voltage detection module, it is thus achieved that the voltage of each lead-acid battery.
B. dsp controller is according to the N number of lead-acid battery voltage obtained, and finds out the lead-acid battery that magnitude of voltage is maximum, wherein N
More than or equal to 2.
C. dsp controller obtains the average voltage of all lead-acid batteries.
D. when the lead-acid battery voltage of magnitude of voltage maximum and the average voltage deviations of all lead-acid batteries are more than a setting valve
Jump into step e during value, otherwise return to step a.
E. DSP is by controlling the first catalyst corresponding to voltage maximum lead-acid battery and the second catalyst makes magnitude of voltage
Big lead-acid battery and heavy-current discharge resistor coupled in parallel, discharge to lead-acid battery.
F. waiting the time T of setting, dsp controller disconnects all contactless contactors by control terminal, and program returns step
Rapid a.
(3) the big current balance of lead-acid battery that step (2) i.e. realizes controlling is completed based on DSP.
The inventive method uses a set of lead-acid battery control system, and this lead-acid battery control system includes filling of lead-acid battery
Equalization discharge device, makes Acid Battery System effectively be managed in charge and discharge process and equalize, to improve lead-acid battery
The efficiency of system and service life, and reduce the maintenance cost of Acid Battery System；The present invention uses DSP as primary equalization control
Device processed, reduces the cost of system；The present invention uses catalyst matrix-style, it is achieved the heavy-current discharge to lead-acid battery, to carry
The reliability of high equilibrium, and realize heavy-current discharge；The inventive method is simple to operate, safe and reliable, and portfolio effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lead-acid 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.
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 lead-acid battery big current balance method controlled based on DSP, concretely comprise the following steps:
(1) a set of lead-acid battery control system is set, (carries the big of radiator including lead-acid battery group, heavy-current discharge resistance R
Power resistor), lead-acid battery voltage detection module, dsp controller and protection device, wherein lead-acid battery group includes at least two
The lead-acid battery of series connection, all corresponding first catalyst of each lead-acid battery and second catalyst；Each lead-acid battery
Positive pole be connected to first end of heavy-current discharge resistance R, the negative pole of each lead-acid battery by the first catalyst of its correspondence
Second end of heavy-current discharge resistance R it is connected to by the second catalyst of its correspondence；Lead-acid battery positive pole and negative pole and plumbic acid
Battery voltage sensing module can be connected with being energized；Dsp controller includes CAN terminal and control terminal, CAN terminal and plumbic acid
Battery voltage sensing module connects, and the control terminal of control terminal and the first catalyst and the second catalyst connects；Dsp controller
When controlling the first catalyst corresponding to lead-acid battery and the conducting of the second catalyst, lead-acid battery is in parallel with heavy-current discharge resistance R,
Synchronization only one of which lead-acid battery is in parallel with heavy-current discharge resistance R；Protection device includes D.C. contactor and self-recoverage
Electric fuse, D.C. contactor and resettable fuse are cascaded and are followed by the negative pole of lead-acid battery group.
Described lead-acid battery is basic lead-acid battery cells i.e. monomer lead-acid battery.
The negative pole of equilibrium object lead-acid battery 1 connects with the positive pole of Jun Heng object lead-acid battery 2, described equilibrium object plumbic acid
The negative pole of battery 2 connects with the positive pole of Jun Heng object lead-acid battery 3, is sequentially connected in series each equilibrium object lead-acid battery, until all
The negative pole of weighing apparatus object lead-acid battery N-1 connects with the positive pole of Jun Heng object lead-acid battery N, and all lead-acid batteries are sequentially connected in series
Lead-acid battery group, in described lead-acid battery group, the most described lead-acid battery group of described equilibrium object lead-acid battery 1 is just
Pole, the negative pole that negative pole is described lead-acid battery group of described equilibrium object lead-acid battery N.
The positive pole of each described equilibrium object lead-acid battery is put with described big electric current by corresponding described first catalyst
First end of electricity resistance R connects, the negative pole of each described equilibrium object lead-acid battery by corresponding described second catalyst with
Second end of described heavy-current discharge resistance R connects, and the control terminal K of described first catalyst and described second catalyst is in parallel
Control terminal with described dsp controller is connected afterwards.
The D1 terminal of each described first catalyst connects with the positive pole of described equilibrium object lead-acid battery, D2 terminal and institute
The first end stating heavy-current discharge resistance R connects, and control terminal K and DSP control terminal is connected.
The D1 terminal of each described second catalyst connects with the negative pole of described equilibrium object lead-acid battery, D2 terminal and institute
The second end stating heavy-current discharge resistance R connects, and control terminal K and DSP control terminal is connected.
Described lead-acid battery voltage detection module can be connected with positive pole and the negative pole of described lead-acid battery with being energized
Connect, for detecting the voltage of each lead-acid battery；Linked with described dsp controller by CAN, send out to dsp controller
Send detected voltage signal.
(2) as in figure 2 it is shown, the lead-acid battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with lead-acid battery voltage detection module, it is thus achieved that the voltage of each lead-acid battery.
B. dsp controller is according to the N number of lead-acid battery voltage obtained, and finds out the lead-acid battery that magnitude of voltage is maximum, wherein N
More than or equal to 2.
C. dsp controller obtains the average voltage of all lead-acid batteries.
D. when the lead-acid battery voltage of magnitude of voltage maximum and the average voltage deviations of all lead-acid batteries are more than a setting valve
Jump into step e during value, otherwise return to step a.
E. DSP is by controlling the first catalyst corresponding to voltage maximum lead-acid battery and the second catalyst makes magnitude of voltage
Big lead-acid battery and heavy-current discharge resistor coupled in parallel, discharge to lead-acid battery.
F. waiting the time T of setting, dsp controller disconnects all contactless contactors by control terminal, and program returns step
Rapid a.
(3) the big current balance of lead-acid battery that step (2) i.e. realizes controlling is completed based on DSP.
Claims (1)
1. the lead-acid battery big current balance method controlled based on DSP, it is characterised in that concretely comprise the following steps:
(1) a set of lead-acid battery control system is set, including lead-acid battery group, heavy-current discharge resistance, the inspection of lead-acid battery voltage
Surveying module, dsp controller and protection device, wherein lead-acid battery group includes at least two lead-acid batteries connected, each plumbic acid
All corresponding first catalyst of battery and second catalyst；The positive pole of each lead-acid battery connects by the first of its correspondence
Tentaculum is connected to the first end of heavy-current discharge resistance, and the negative pole of each lead-acid battery is connected by the second catalyst of its correspondence
The second end in heavy-current discharge resistance；Lead-acid battery positive pole and negative pole and lead-acid battery voltage detection module can be energized ground phase
Connect；Dsp controller includes that CAN terminal and control terminal, CAN terminal are connected with lead-acid battery voltage detection module, controls end
Son is connected with the control terminal of the first catalyst and the second catalyst；Dsp controller controls the first contact that lead-acid battery is corresponding
When device and the conducting of the second catalyst, lead-acid battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which lead-acid battery with
Heavy-current discharge resistor coupled in parallel；Protection device includes that D.C. contactor and resettable fuse, D.C. contactor and self-recoverage are protected
Danger silk is cascaded and is followed by the negative pole of lead-acid battery group；
Described lead-acid battery is basic lead-acid battery cells i.e. monomer lead-acid battery or by multiple basic lead-acid battery cells also
The lead-acid battery brick that joint group becomes；
(2) the lead-acid battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with lead-acid battery voltage detection module, it is thus achieved that the voltage of each lead-acid battery；
B. dsp controller is according to the N number of lead-acid battery voltage obtained, and finds out the lead-acid battery that magnitude of voltage is maximum, and wherein N is more than
Equal to 2；
C. dsp controller obtains the average voltage of all lead-acid batteries；
D. when the lead-acid battery voltage of magnitude of voltage maximum sets threshold values with the average voltage deviations of all lead-acid batteries more than one
Jump into step e, otherwise return to step a；
E. DSP makes magnitude of voltage maximum by controlling the first catalyst corresponding to voltage maximum lead-acid battery and the second catalyst
Lead-acid battery and heavy-current discharge resistor coupled in parallel, discharge to lead-acid battery；
F. waiting the time T of setting, dsp controller disconnects all contactless contactors by control terminal, and program returns step a；
(3) the big current balance of lead-acid battery that step (2) i.e. realizes controlling is completed based on DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565928.3A CN106130111A (en) | 2016-07-19 | 2016-07-19 | A kind of lead-acid battery big current balance method controlled based on DSP |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565928.3A CN106130111A (en) | 2016-07-19 | 2016-07-19 | A kind of lead-acid battery big current balance method controlled based on DSP |
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| CN106130111A true CN106130111A (en) | 2016-11-16 |
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| CN201610565928.3A Pending CN106130111A (en) | 2016-07-19 | 2016-07-19 | A kind of lead-acid battery big current balance method controlled based on DSP |
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Cited By (1)
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| CN106712224A (en) * | 2017-03-17 | 2017-05-24 | 淄博明泰电器科技有限公司 | Device for safety control of fully charged totally-enclosed lead acid battery pack and control method thereof |
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