CN105811535A - Large current balancing control system of nickel metal hybrid battery - Google Patents
Large current balancing control system of nickel metal hybrid battery Download PDFInfo
- Publication number
- CN105811535A CN105811535A CN201610337671.6A CN201610337671A CN105811535A CN 105811535 A CN105811535 A CN 105811535A CN 201610337671 A CN201610337671 A CN 201610337671A CN 105811535 A CN105811535 A CN 105811535A
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- CN
- China
- Prior art keywords
- battery
- nickel metal
- catalyst
- metal hybrid
- large current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 title abstract description 13
- 229910052751 metal Inorganic materials 0.000 title abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract 24
- 229910052759 nickel Inorganic materials 0.000 title abstract 12
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 107
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 107
- 239000003054 catalyst Substances 0.000 claims description 33
- 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
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000005516 engineering process Methods 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013461 design Methods 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
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 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
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a large current balancing control system of a nickel metal hybrid battery. The large current balancing control system of the nickel metal hybrid battery comprises at least two nickel metal hybrid batteries, first contactors, second contactors, a large current discharging resistor, a nickel metal hybrid battery voltage detection module, a singlechip microcomputer controller and a protection device, wherein the at least two nickel metal hybrid batteries are connected in series, the quantity of the first contactors and the second contactors are the same as the quantity of the nickel metal hybrid batteries, the singlechip microcomputer controller acquires the voltage of each nickel metal hybrid battery through the nickel metal hybrid battery voltage detection module, and when the balance degree among the nickel metal hybrid batteries is greater than a set threshold, the nickel metal hybrid battery with the maximum voltage is discharged by the large current discharging resistor according to a set time. In the large current balancing control system, a singlechip microcomputer is taken as a main balancing controller, and the system cost is reduced; with the adoption of a contactor matrix, large current discharging of the nickel metal hybrid battery is achieved, the balancing reliability can be improved, and the large current discharging is achieved; and the system is simple to operate, is safe and reliability and is high in balancing effect.
Description
Technical field
The invention belongs to the balancing technique field of set of cells, control system particularly to a kind of big current balance of Ni-MH battery.
Background technology
The development of fuel-engined vehicle causes the huge consumption of petroleum resources, the continuous intensification of global energy crisis, exacerbates the harm of greenhouse effect and atmospheric pollution simultaneously.Most countries, government and Automobile Enterprises are all it is well recognized that energy-saving and emission-reduction are the developing direction of future automobile industry in the world, and Development of EV will be the optimum method solving this difficult point.It is low that electric automobile has noise, emission-free discharge, environmental friendliness, and the thermal efficiency is high, discharges low, and recoverable improves the advantages such as energy resource structure.Each automobile production enterprise just actively researches and develops electric automobile, and Chinese Government is also actively promoting electric automobile.Electric automobile can be roughly divided into pure electric automobile, hybrid-electric car and FC-EV according to power source, and these electric automobiles generally can configure battery as energy-storage travelling wave tube, particularly in pure electric automobile extensive use multi-series and parallel battery as power source.
Ni-MH battery include one with nickel hydroxide be main active positive plate and the cathode alloy plate of an absorption hydrogen, inside have a dividing plate being made up of fiber, be contained in metal shell with alkaline electrolyte, with one piece of sealing plate that can automatically open up complete aerofluxus.
Due to the individuality that each monomer of Ni-MH battery group is all different, in production technology, the factor such as production time causes that battery performance index exists difference.Although along with the continuous progress of technology, before dispatching from the factory, the difference between Ni-MH battery inside constantly reduces, but discordance faint in use procedure constantly can be amplified along with use condition.Such discordance is by increasing with design load deviation for the capacity causing whole group of Ni-MH battery.In charging process, first the monomer that capacity is little will be filled, and cause that 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, and stopping is discharged by whole Battery pack.The existence of such problem of inconsistency, active volume and service life of causing Ni-MH battery group etc., aspect was far away from cell, and increased 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, the performance of whole Battery pack can at short time high progression so that whole set of cells is scrapped.
In order to solve Ni-MH battery group problem of inconsistency, it is proposed that the balancing technique of Ni-MH battery.The voltage to the effect that detecting Ni-MH battery group of balanced management, the parameter such as electric current, these parameters are identified, analyze battery with two side terminals, by controlling device, the monomer of energy height is discharged, make the state of each monomer reach unanimity.The consistency problem of set of cells can be improved by effective Balance route strategy and equalizing circuit, it is possible to extend the life-span of set of cells, reduce the maintenance cost of set of cells, make the electric automobile that safe and efficient intelligence uses put it over.
Equalization methods general at present is that each Ni-MH battery is configured a discharge resistance, by checking the voltage of each monomer, the monomer that monomer is higher is discharged by the discharge resistance of oneself correspondence.When Ni-MH battery capacity is relatively larger, this discharge resistance discharge current would become hard to meet the requirement of fast uniform.If discharge resistance power corresponding for each Ni-MH battery is become big, its volume and heat radiation are by the face of new challenge, the method that the method for existing employing resistance equilibrium seldom has big current balance.
Summary of the invention
It is an object of the invention to provide a kind of big current balance of Ni-MH battery and control system.
The present invention is achieved in that a kind of big current balance of Ni-MH battery controls system; including Ni-MH battery group, heavy-current discharge resistance, Ni-MH battery voltage detection module, singlechip controller and protection device; wherein Ni-MH battery group includes the Ni-MH battery of at least two series connection, wherein all corresponding first catalyst of each Ni-MH battery and second catalyst；The positive pole of Ni-MH battery is connected to heavy-current discharge resistance the first end by the first catalyst of its correspondence, and the negative pole of Ni-MH battery is connected to heavy-current discharge resistance the second end by the second catalyst of its correspondence；Anode of nickel-metal hydride battery can be connected with Ni-MH battery voltage detection module with negative pole with being energized；Singlechip controller includes CAN terminal and control terminal, CAN terminal is connected with Ni-MH battery voltage detection module, the control terminal of control terminal and the first catalyst and the second catalyst connects, when controlling the first catalyst corresponding to Ni-MH battery and the conducting of the second catalyst when singlechip controller, Ni-MH battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which Ni-MH battery and heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse, D.C. contactor and resettable fuse and is cascaded and is followed by the negative pole of Ni-MH battery group.
Described Ni-MH battery is basic Ni-MH battery unit and monomer Ni-MH battery or the Ni-MH battery brick composed in parallel by multiple basic Ni-MH battery unit.
The big current balance of Ni-MH battery of the present invention controls system and includes the charging and discharging balance device of Ni-MH battery, nickel-metal hydride battery systems is made effectively to be managed in charge and discharge process and balanced, to improve efficiency and the service life of nickel-metal hydride battery systems, reduce the maintenance cost of nickel-metal hydride battery systems；The present invention adopts single-chip microcomputer as primary equalization controller, reduces the cost of system；The present invention adopts catalyst matrix-style, it is achieved the heavy-current discharge to Ni-MH battery, it is possible to increase balanced reliability, and realizes heavy-current discharge, and native system is simple to operate, safe and reliable, and portfolio effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation that in the embodiment of the present invention, the big current balance of Ni-MH battery controls system.
Fig. 2 is that in the embodiment of the present invention, the big current balance of Ni-MH battery controls the balance control method flow chart in system charge and discharge process.
Detailed description of the invention
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further described.
It is described below for disclosing the present invention so that those skilled in the art are capable of the present invention.Preferred embodiment in being described below is only used as citing, it may occur to persons skilled in the art that other apparent modification.The ultimate principle of the present invention defined in the following description can apply to other embodiments, deformation program, improvement project, equivalent and the other technologies scheme without departing from the spirit and scope of the present invention.
As shown in Figure 1; a kind of big current balance of Ni-MH battery controls system; carry the high-power resistance of radiator including Ni-MH battery group, heavy-current discharge resistance R(), Ni-MH battery voltage detection module, singlechip controller and protection device; wherein Ni-MH battery group includes the Ni-MH battery of at least two series connection, wherein all corresponding first catalyst of each Ni-MH battery and second catalyst；The positive pole of Ni-MH battery is connected to heavy-current discharge resistance the first end by the first catalyst of its correspondence, and the negative pole of Ni-MH battery is connected to heavy-current discharge resistance the second end by the second catalyst of its correspondence；Anode of nickel-metal hydride battery can be connected with Ni-MH battery voltage detection module with negative pole with being energized；Singlechip controller includes CAN terminal and control terminal, CAN terminal is connected with Ni-MH battery voltage detection module, the control terminal of control terminal and the first catalyst and the second catalyst connects, when controlling the first catalyst corresponding to Ni-MH battery and the conducting of the second catalyst when singlechip controller, Ni-MH battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which Ni-MH battery and heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse, D.C. contactor and resettable fuse and is cascaded and is followed by the negative pole of Ni-MH battery group.
Described Ni-MH battery is basic Ni-MH battery unit and monomer Ni-MH battery.
The balanced negative pole of object Ni-MH battery 1 connects with the positive pole of balanced object Ni-MH battery 2, the described balanced negative pole of object Ni-MH battery 2 connects with the positive pole of balanced object Ni-MH battery 3, it is sequentially connected in series each balanced object Ni-MH battery, until the balanced negative pole of object Ni-MH battery N-1 connects with the positive pole of balanced object Ni-MH battery N, all Ni-MH batteries are sequentially connected in series Ni-MH battery group, in described Ni-MH battery group, the positive pole of the just extremely described Ni-MH battery group of described balanced object Ni-MH battery 1, the negative pole that negative pole is described Ni-MH battery group of described balanced object Ni-MH battery N.
The positive pole of each described balanced object Ni-MH battery is connected with first end of described heavy-current discharge resistance R by corresponding described first catalyst, the negative pole of each described balanced object Ni-MH battery is connected with second end of described heavy-current discharge resistance R by corresponding described second catalyst, is connected with the control terminal of described singlechip controller after the control terminal K parallel connection of described first catalyst and described second catalyst.
The D1 terminal of each first catalyst connects with the positive pole of balanced object Ni-MH battery, and D2 terminal is connected with first end of heavy-current discharge resistance R, and control terminal K is connected with the control terminal of singlechip controller.
The D1 terminal of each second catalyst connects with the negative pole of balanced object Ni-MH battery, and D2 terminal is connected with second end of heavy-current discharge resistance R, and control terminal K is connected with the control terminal of singlechip controller.
Described Ni-MH battery voltage detection module can be connected with positive pole and the negative pole of Ni-MH battery with being energized, for detecting the voltage of each Ni-MH battery；It is connected with described singlechip controller by CAN terminal, sends the voltage signal detected to singlechip controller.
As in figure 2 it is shown, the big current balance of Ni-MH battery in the present embodiment controls system and runs according to following steps:
A. singlechip controller communicates with Ni-MH battery voltage detection module, it is thus achieved that the voltage of each Ni-MH battery.
B. singlechip 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 be more than or equal to 2.
C. singlechip controller obtains the meansigma methods of all Ni-MH battery voltage.
D. jump into step e when the maximum Ni-MH battery voltage of magnitude of voltage and all Ni-MH battery average voltage deviations set threshold values more than one, otherwise return to step a.
E. singlechip controller is by controlling the first catalyst corresponding to the maximum Ni-MH battery of voltage and the second catalyst, and the Ni-MH battery making magnitude of voltage maximum is in parallel with heavy-current discharge resistance R, and the Ni-MH battery that magnitude of voltage is maximum discharges.
F. waiting the time T of setting, singlechip controller disconnects all contactless contactors by control terminal, and program returns a.
Claims (1)
1. the big current balance of Ni-MH battery controls system; it is characterized in that the big current balance of this Ni-MH battery controls system and includes Ni-MH battery group, heavy-current discharge resistance, Ni-MH battery voltage detection module, singlechip controller and protection device; wherein Ni-MH battery group includes the Ni-MH battery of at least two series connection, wherein all corresponding first catalyst of each Ni-MH battery and second catalyst；The positive pole of Ni-MH battery is connected to heavy-current discharge resistance the first end by the first catalyst of its correspondence, and the negative pole of Ni-MH battery is connected to heavy-current discharge resistance the second end by the second catalyst of its correspondence；Anode of nickel-metal hydride battery can be connected with Ni-MH battery voltage detection module with negative pole with being energized；Singlechip controller includes CAN terminal and control terminal, CAN terminal is connected with Ni-MH battery voltage detection module, the control terminal of control terminal and the first catalyst and the second catalyst connects, when controlling the first catalyst corresponding to Ni-MH battery and the conducting of the second catalyst when singlechip controller, Ni-MH battery and heavy-current discharge resistor coupled in parallel, synchronization only one of which Ni-MH battery and heavy-current discharge resistor coupled in parallel；Protection device includes D.C. contactor and resettable fuse, D.C. contactor and resettable fuse and is cascaded and is followed by the negative pole of Ni-MH battery group；
Described Ni-MH battery is basic Ni-MH battery unit and monomer Ni-MH battery or the Ni-MH battery brick composed in parallel by multiple basic Ni-MH battery unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610337671.6A CN105811535A (en) | 2016-05-22 | 2016-05-22 | Large current balancing control system of nickel metal hybrid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610337671.6A CN105811535A (en) | 2016-05-22 | 2016-05-22 | Large current balancing control system of nickel metal hybrid battery |
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| Publication Number | Publication Date |
|---|---|
| CN105811535A true CN105811535A (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610337671.6A Pending CN105811535A (en) | 2016-05-22 | 2016-05-22 | Large current balancing control system of nickel metal hybrid battery |
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| Country | Link |
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| CN (1) | CN105811535A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100049A (en) * | 2016-07-19 | 2016-11-09 | 桂林理工大学 | Ni-MH battery big current balance DSP control system |
| CN106505665A (en) * | 2016-11-11 | 2017-03-15 | 桂林理工大学 | Ni-MH battery high current equilibrium FPGA control systems |
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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 |
| US20120161715A1 (en) * | 2010-12-22 | 2012-06-28 | Jong-Doo Park | Cell balancing circuit, method of driving the same, and battery management system that includes the cell balancing circuit |
| CN102569926A (en) * | 2010-12-31 | 2012-07-11 | 欣旺达电子股份有限公司 | Automobile lithium battery charge balancing method and balancing system |
| CN103887853A (en) * | 2014-03-18 | 2014-06-25 | 浙江大学城市学院 | Balance control method of lithium-ion battery set |
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2016
- 2016-05-22 CN CN201610337671.6A patent/CN105811535A/en active Pending
Patent Citations (4)
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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 |
| US20120161715A1 (en) * | 2010-12-22 | 2012-06-28 | Jong-Doo Park | Cell balancing circuit, method of driving the same, and battery management system that includes the cell balancing circuit |
| CN102569926A (en) * | 2010-12-31 | 2012-07-11 | 欣旺达电子股份有限公司 | Automobile lithium battery charge balancing method and balancing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100049A (en) * | 2016-07-19 | 2016-11-09 | 桂林理工大学 | Ni-MH battery big current balance DSP control system |
| CN106505665A (en) * | 2016-11-11 | 2017-03-15 | 桂林理工大学 | Ni-MH battery high current equilibrium FPGA control systems |
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Application publication date: 20160727 |