CN106169621A - A kind of Ni-MH battery big current balance method controlled based on DSP - Google Patents
A kind of Ni-MH battery big current balance method controlled based on DSP Download PDFInfo
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- CN106169621A CN106169621A CN201610565930.0A CN201610565930A CN106169621A CN 106169621 A CN106169621 A CN 106169621A CN 201610565930 A CN201610565930 A CN 201610565930A CN 106169621 A CN106169621 A CN 106169621A
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- battery
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- voltage
- dsp
- heavy
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- 229910018095 Ni-MH Inorganic materials 0.000 title claims abstract description 139
- 229910018477 Ni—MH Inorganic materials 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims description 11
- 229910052987 metal hydride Inorganic materials 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
-
- H02J7/0026—
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of Ni-MH battery big current balance method controlled based on DSP.A set of Ni-MH battery control system is set, first catalyst equal with Ni-MH battery quantity including the Ni-MH battery of at least two series connection and the second catalyst, heavy-current discharge resistance, Ni-MH battery voltage detection module, dsp controller and protection device.Dsp controller obtains each Ni-MH battery voltage by Ni-MH battery voltage detection module, and the equilibrium degree between Ni-MH battery is more than when setting threshold values, by Ni-MH battery maximum for voltage according to the time set by heavy-current discharge conductive discharge.The present invention uses DSP as primary equalization controller, improves the stability controlled, rapidity；The present invention uses catalyst matrix-style, it is achieved the heavy-current discharge to Ni-MH 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 Ni-MH battery group, particularly to a kind of Ni-MH battery controlled based on DSP
Big current balance method.
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.
Ni-MH battery includes that the negative electrode of a positive plate with nickel hydroxide as main active and an absorption hydrogen closes
Gold plate, inside has a dividing plate being made up of fiber, is contained in metal shell with alkaline electrolyte, carries one piece can automatically open up completely
The sealing plate of aerofluxus.
Owing to each monomer of Ni-MH 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 Ni-MH 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 Ni-MH 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 Ni-MH 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 Ni-MH battery group problem of inconsistency, there has been proposed the balancing technique of Ni-MH battery.Balanced management
The voltage to the effect that detecting Ni-MH 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 Ni-MH 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 Ni-MH battery Capacity Ratio 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 Ni-MH 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 Ni-MH battery big current balance method controlled based on DSP.
Concretely comprise the following steps:
(1) a set of Ni-MH battery control system is set, including Ni-MH battery group, heavy-current discharge resistance, the inspection of Ni-MH battery voltage
Surveying module, dsp controller and protection device, wherein Ni-MH battery group includes at least two Ni-MH batteries connected, each ni-mh
All corresponding first catalyst of battery and second catalyst；The positive pole of each Ni-MH 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 Ni-MH battery is connected by the second catalyst of its correspondence
The second end in heavy-current discharge resistance；Anode of nickel-metal hydride battery and negative pole and Ni-MH battery voltage detection module can be energized ground phase
Connect；Dsp controller includes that CAN terminal and control terminal, CAN terminal are connected with Ni-MH 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 Ni-MH battery is corresponding
When device and the conducting of the second catalyst, Ni-MH battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which Ni-MH 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 Ni-MH battery group.
Described Ni-MH battery is basic Ni-MH battery unit i.e. monomer Ni-MH battery or by multiple basic Ni-MH battery lists
The Ni-MH battery brick that unit composes in parallel.
(2) the Ni-MH battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with Ni-MH battery voltage detection module, it is thus achieved that the voltage of each Ni-MH battery.
B. dsp controller is according to the N number of Ni-MH battery voltage obtained, and finds out the Ni-MH battery that magnitude of voltage is maximum, wherein N
More than or equal to 2.
C. dsp controller obtains the average voltage of all Ni-MH batteries.
D. when the Ni-MH battery voltage of magnitude of voltage maximum and the average voltage deviations of all Ni-MH 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 Ni-MH battery and the second catalyst makes magnitude of voltage
Big Ni-MH battery and heavy-current discharge resistor coupled in parallel, discharge to Ni-MH 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 Ni-MH battery that step (2) i.e. realizes controlling is completed based on DSP.
The inventive method uses a set of Ni-MH battery control system, and this system includes the charge and discharge balancing dress of Ni-MH battery
Put, make nickel-metal hydride battery systems effectively be managed in charge and discharge process and equalize, to improve the efficiency of nickel-metal hydride battery systems
And service life, and reduce the maintenance cost of nickel-metal hydride battery systems；The present invention uses DSP as primary equalization controller, improves
The stability controlled, rapidity；The present invention uses catalyst matrix-style, it is achieved the heavy-current discharge to Ni-MH 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 Ni-MH 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 Ni-MH battery big current balance method controlled based on DSP, concretely comprise the following steps:
(1) a set of Ni-MH battery control system is set, (carries the big of radiator including Ni-MH battery group, heavy-current discharge resistance R
Power resistor), Ni-MH battery voltage detection module, dsp controller and protection device, wherein Ni-MH battery group includes at least two
The Ni-MH battery of series connection, all corresponding first catalyst of each Ni-MH battery and second catalyst；Each Ni-MH battery
Positive pole be connected to first end of heavy-current discharge resistance R, the negative pole of each Ni-MH 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；Anode of nickel-metal hydride battery and negative pole and ni-mh
Battery voltage sensing module can be connected with being energized；Dsp controller includes CAN terminal and control terminal, CAN terminal and ni-mh
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 Ni-MH battery and the conducting of the second catalyst, Ni-MH battery is in parallel with heavy-current discharge resistance R,
Synchronization only one of which Ni-MH 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 Ni-MH battery group.
Described Ni-MH battery is basic Ni-MH battery unit i.e. monomer Ni-MH battery.
The negative pole of equilibrium object Ni-MH battery 1 connects with the positive pole of Jun Heng object Ni-MH battery 2, described equilibrium object ni-mh
The negative pole of battery 2 connects with the positive pole of Jun Heng object Ni-MH battery 3, is sequentially connected in series each equilibrium object Ni-MH battery, until all
The negative pole of weighing apparatus object Ni-MH battery N-1 connects with the positive pole of Jun Heng object Ni-MH battery N, and all Ni-MH batteries are sequentially connected in series
Ni-MH battery group, in described Ni-MH battery group, the most described Ni-MH battery group of described equilibrium object Ni-MH battery 1 is just
Pole, the negative pole that negative pole is described Ni-MH battery group of described equilibrium object Ni-MH battery N.
The positive pole of each described equilibrium object Ni-MH 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 Ni-MH 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 Ni-MH 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 Ni-MH 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 Ni-MH battery voltage detection module can be connected with positive pole and the negative pole of described Ni-MH battery with being energized
Connect, for detecting the voltage of each Ni-MH 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 Ni-MH battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with Ni-MH battery voltage detection module, it is thus achieved that the voltage of each Ni-MH battery.
B. dsp controller is according to the N number of Ni-MH battery voltage obtained, and finds out the Ni-MH battery that magnitude of voltage is maximum, wherein N
More than or equal to 2.
C. dsp controller obtains the average voltage of all Ni-MH batteries.
D. when the Ni-MH battery voltage of magnitude of voltage maximum and the average voltage deviations of all Ni-MH 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 Ni-MH battery and the second catalyst makes magnitude of voltage
Big Ni-MH battery and heavy-current discharge resistor coupled in parallel, discharge to Ni-MH 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 Ni-MH battery that step (2) i.e. realizes controlling is completed based on DSP.
Claims (1)
1. the Ni-MH battery big current balance method controlled based on DSP, it is characterised in that concretely comprise the following steps:
(1) a set of Ni-MH battery control system is set, including Ni-MH battery group, heavy-current discharge resistance, the inspection of Ni-MH battery voltage
Surveying module, dsp controller and protection device, wherein Ni-MH battery group includes at least two Ni-MH batteries connected, each ni-mh
All corresponding first catalyst of battery and second catalyst；The positive pole of each Ni-MH 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 Ni-MH battery is connected by the second catalyst of its correspondence
The second end in heavy-current discharge resistance；Anode of nickel-metal hydride battery and negative pole and Ni-MH battery voltage detection module can be energized ground phase
Connect；Dsp controller includes that CAN terminal and control terminal, CAN terminal are connected with Ni-MH 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 Ni-MH battery is corresponding
When device and the conducting of the second catalyst, Ni-MH battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which Ni-MH 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 Ni-MH battery group；
Described Ni-MH battery is basic Ni-MH battery unit i.e. monomer Ni-MH battery or by multiple basic Ni-MH battery unit also
The Ni-MH battery brick that joint group becomes；
(2) the Ni-MH battery control system that step (1) is arranged is run according to following steps:
A. dsp controller communicates with Ni-MH battery voltage detection module, it is thus achieved that the voltage of each Ni-MH battery；
B. dsp controller is according to the N number of Ni-MH battery voltage obtained, and finds out the Ni-MH 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 Ni-MH batteries；
D. when the Ni-MH battery voltage of magnitude of voltage maximum sets threshold values with the average voltage deviations of all Ni-MH 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 Ni-MH battery and the second catalyst
Ni-MH battery and heavy-current discharge resistor coupled in parallel, discharge to Ni-MH 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 Ni-MH battery that step (2) i.e. realizes controlling is completed based on DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565930.0A CN106169621A (en) | 2016-07-19 | 2016-07-19 | A kind of Ni-MH battery big current balance method controlled based on DSP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565930.0A CN106169621A (en) | 2016-07-19 | 2016-07-19 | A kind of Ni-MH battery big current balance method controlled based on DSP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106169621A true CN106169621A (en) | 2016-11-30 |
Family
ID=58064484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610565930.0A Withdrawn CN106169621A (en) | 2016-07-19 | 2016-07-19 | A kind of Ni-MH battery big current balance method controlled based on DSP |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106169621A (en) |
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2016
- 2016-07-19 CN CN201610565930.0A patent/CN106169621A/en not_active Withdrawn
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20161130 |