CN106385080A - Nickel-hydrogen battery large-current equalizing method based on FPGA control - Google Patents
Nickel-hydrogen battery large-current equalizing method based on FPGA control Download PDFInfo
- Publication number
- CN106385080A CN106385080A CN201610990844.4A CN201610990844A CN106385080A CN 106385080 A CN106385080 A CN 106385080A CN 201610990844 A CN201610990844 A CN 201610990844A CN 106385080 A CN106385080 A CN 106385080A
- Authority
- CN
- China
- Prior art keywords
- battery
- nickel
- contactor
- voltage
- hydrogen battery
- 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
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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a nickel-hydrogen battery large-current equalizing method based on FPGA control. A set of nickel-hydrogen battery control system is arranged. The nickel-hydrogen battery control system comprises the components of at least two serially connected nickel-hydrogen batteries, first contactors and second contactors of which the number is same with that of the nickel-hydrogen batteries, a large-current discharging resistor, a nickel-hydrogen battery voltage detecting module, an FPGA controller and a protecting device. The FPGA controller acquires the voltage of each nickel-hydrogen battery through the nickel-hydrogen battery voltage detecting module. On the condition that equilibrium between the nickel-hydrogen batteries is higher than a preset threshold, discharging is performed on the nickel-hydrogen battery with highest voltage according to preset time through the large-current discharging resistor. According to the nickel-hydrogen battery large-current equalizing method, the FPGA controller is used as the main equalizing controller for improving stability and speed in controlling. According to the nickel-hydrogen battery large-current equalizing method, a contactor matrix manner is utilized for realizing large-current discharging on the nickel-hydrogen battery, thereby improving equalizing reliability and realizing large-current discharging. The nickel-hydrogen battery large-current equalizing method has advantages of simple operation, high safety, high reliability and high balancing effect.
Description
Technical field
The invention belongs to the balancing technique field of Ni-MH battery group, particularly to a kind of Ni-MH battery based on FPGA 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 effect and atmospheric 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.
Ni-MH battery includes a positive plate with nickel hydroxide as main active and the negative electrode of an absorption hydrogen closes
Golden plate, inside has a dividing plate being made up of fiber, is contained in metal shell with alkaline electrolyte, and one piece of band can automatically open up completely
The sealing plate of aerofluxuss.
Because each monomer of Ni-MH battery group is all different individualities, in production technology, the factor such as production time leads to
There is difference in battery performance index.Although 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 with use condition.Such discordance will be led
Cause the capacity of whole group Ni-MH battery increasing with design load deviation.In charging process, the little monomer of capacity will be filled first
Full, lead to the battery of other capacity can not obtain enough capacity；In discharge process, the little monomer of capacity is discharged into first
Blanking voltage, whole group battery will stop electric discharge.The presence 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,
Capacity is occurred significantly to reduce when the consistency problem of set of cells develops into Individual cells, when internal resistance significantly improves, whole group
The performance of battery can be in 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
To the effect that detect Ni-MH battery group voltage, the parameter such as electric current, these parameters are identified, analysis battery consistent
Property, discharged by the control device monomer high to energy body, so that the state of each monomer is reached unanimity.By effectively equal
Weighing apparatus control strategy and equalizing circuit can improve the consistency problem of set of cells, can extend the life-span of set of cells, reduce battery
The maintenance cost of group, 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 Ni-MH battery, by checking each monomer
Voltage, the monomer higher to monomer is discharged by oneself corresponding discharge resistance.When Ni-MH battery Capacity Ratio is larger,
This discharge resistance discharge current would become hard to meet the requirement of fast uniform.If by corresponding for each Ni-MH battery discharge resistance work(
Rate becomes big, and, by the face of new challenge, existing using resistance, method seldom has high current side in a balanced way in a balanced way for its volume and radiating
Method.
Content of the invention
It is an object of the invention to provide a kind of Ni-MH battery high current equalization methods based on FPGA control.
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
Survey module, FPGA controller and protection device, wherein Ni-MH battery group includes the Ni-MH battery of at least two series connection, each ni-mh
The all corresponding first contactor of battery and a second contactor；The positive pole of each Ni-MH battery passes through it and corresponding first connects
Tentaculum is connected to the first end of heavy-current discharge resistance, and the negative pole of each Ni-MH battery passes through its corresponding second contactor and connects
The second end in heavy-current discharge resistance；The positive pole of Ni-MH battery and negative pole can be energized to ground with Ni-MH battery voltage detection module
It is connected；FPGA controller includes CAN terminal and control terminal, and CAN terminal is connect with Ni-MH battery voltage detection module, controls
Terminal is connected with the control terminal of first contactor and second contactor；FPGA controller controls Ni-MH battery corresponding first to connect
When tentaculum and second contactor conducting, 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 D.C. contactor and resettable fuse, D.C. contactor and self- recoverage
Electric fuse is connected to the negative pole of Ni-MH battery group after being cascaded.
Described Ni-MH battery is monomer Ni-MH battery or by multiple basic Ni-MH battery lists for basic Ni-MH battery unit
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. FPGA controller is communicated with Ni-MH battery voltage detection module, obtains the voltage of each Ni-MH battery.
B. FPGA controller, according to the N number of Ni-MH battery voltage obtaining, finds out the maximum Ni-MH battery of magnitude of voltage, wherein N
More than or equal to 2.
C. FPGA controller obtains the average voltage of all Ni-MH batteries.
D. when the average voltage deviations of the maximum Ni-MH battery of magnitude of voltage and all Ni-MH batteries are more than one and set threshold values
Jump into step e, otherwise return to step a.
E. FPGA controller passes through the maximum corresponding first contactor of Ni-MH battery of control voltage value and second contactor
Make the maximum Ni-MH battery of magnitude of voltage and heavy-current discharge resistor coupled in parallel, Ni-MH battery is discharged.
F. wait the time T of setting, FPGA controller disconnects all contactless contactors by control terminal, program returns
Step a.
(3) complete the Ni-MH battery high current equilibrium that step (2) is realized controlling based on FPGA.
The present invention uses a set of Ni-MH battery control system, and this system includes the charging and discharging balance device of Ni-MH battery, makes
Nickel-metal hydride battery systems are effectively managed in charge and discharge process and are equalized, to improve efficiency and the use of nickel-metal hydride battery systems
Life-span, and reduce the maintenance cost of nickel-metal hydride battery systems.The present invention adopts FPGA as primary equalization controller, improves control
Stability, rapidity.The present invention adopts catalyst matrix-style, realizes the heavy-current discharge to Ni-MH battery, to improve equilibrium
Reliability, 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 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.
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 ultimate 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 Ni-MH battery high current equalization methods based on FPGA control, 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 R（Carry the big of radiator
Power resistor）, Ni-MH battery voltage detection module, FPGA controller and protection device, wherein Ni-MH battery group includes at least two
The Ni-MH battery of individual series connection, all corresponding first contactor of each Ni-MH battery and a second contactor；Each ni-mh electricity
The positive pole in pond is connected to the first end of heavy-current discharge resistance R by its corresponding first contactor, each Ni-MH battery negative
Pole is connected to second end of heavy-current discharge resistance R by its corresponding second contactor；The positive pole of Ni-MH battery and negative pole with
Ni-MH battery voltage detection module can be connected with being energized；FPGA controller includes CAN terminal and control terminal, CAN terminal
Connect with Ni-MH battery voltage detection module, control terminal is connected with the control terminal of first contactor and second contactor；FPGA
When controller controls the corresponding first contactor of Ni-MH battery and second contactor conducting, Ni-MH battery and heavy-current discharge resistance
R is in parallel, and synchronization only one of which Ni-MH battery is in parallel with heavy-current discharge resistance R；Protection device include D.C. contactor and
Resettable fuse, D.C. contactor and resettable fuse are connected to the negative pole of Ni-MH battery group after being cascaded.
Described Ni-MH battery is monomer Ni-MH battery for basic Ni-MH battery unit.
The negative pole of equilibrium object Ni-MH battery 1 is connected with the positive pole of Jun Heng object Ni-MH battery 2, described equilibrium object ni-mh
The negative pole of battery 2 is connected with the positive pole of Jun Heng object Ni-MH battery 3, is sequentially connected in series each and equalizes object Ni-MH battery, Zhi Daojun
The negative pole of weighing apparatus object Ni-MH battery N-1 is connected 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 just extremely described Ni-MH battery group of described equilibrium object Ni-MH battery 1 is just
Pole, the negative pole of described equilibrium object Ni-MH battery N is the negative pole of described Ni-MH battery group.
The positive pole of each described equilibrium object Ni-MH battery is put by corresponding described first contactor and described high current
The first end of resistance R connects, the negative pole of each described equilibrium object Ni-MH battery pass through corresponding described second contactor and
Second end of described heavy-current discharge resistance R connects, and the control terminal K of described first contactor and described second contactor is in parallel
It is connected with the control terminal of described FPGA controller afterwards.
The positive pole of the D1 terminal of each described first contactor and described Jun Heng object Ni-MH battery connects, D2 terminal and institute
The first end stating heavy-current discharge resistance R connects, and control terminal K is connected with FPGA control terminal.
The negative pole of the D1 terminal of each described second contactor and described Jun Heng object Ni-MH battery connects, D2 terminal and institute
The second end stating heavy-current discharge resistance R connects, and control terminal K is connected with FPGA control terminal.
Described Ni-MH battery voltage detection module can be connected with the positive pole of described Ni-MH battery and negative pole with being energized
Connect, for detecting the voltage of each Ni-MH battery；Linked with described FPGA controller by CAN, to FPGA controller
Send detected voltage signal.
(2) as shown in Fig. 2 the Ni-MH battery control system that step (1) is arranged is run according to following steps：
A. FPGA controller is communicated with Ni-MH battery voltage detection module, obtains the voltage of each Ni-MH battery.
B. FPGA controller, according to the N number of Ni-MH battery voltage obtaining, finds out the maximum Ni-MH battery of magnitude of voltage, wherein N
More than or equal to 2.
C. FPGA controller obtains the average voltage of all Ni-MH batteries.
D. when the average voltage deviations of the maximum Ni-MH battery of magnitude of voltage and all Ni-MH batteries are more than one and set threshold values
Jump into step e, otherwise return to step a.
E. FPGA controller passes through the maximum corresponding first contactor of Ni-MH battery of control voltage value and second contactor
Make the maximum Ni-MH battery of magnitude of voltage in parallel with heavy-current discharge resistance R, Ni-MH battery is discharged.
F. wait the time T of setting, FPGA controller disconnects all contactless contactors by control terminal, program returns
Step a.
(3) complete the Ni-MH battery high current equilibrium that step (2) is realized controlling based on FPGA.
Claims (1)
1. a kind of Ni-MH battery high current equalization methods based on FPGA control are 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
Survey module, FPGA controller and protection device, wherein Ni-MH battery group includes the Ni-MH battery of at least two series connection, each ni-mh
The all corresponding first contactor of battery and a second contactor；The positive pole of each Ni-MH battery passes through it and corresponding first connects
Tentaculum is connected to the first end of heavy-current discharge resistance, and the negative pole of each Ni-MH battery passes through its corresponding second contactor and connects
The second end in heavy-current discharge resistance；The positive pole of Ni-MH battery and negative pole can be energized to ground with Ni-MH battery voltage detection module
It is connected；FPGA controller includes CAN terminal and control terminal, and CAN terminal is connect with Ni-MH battery voltage detection module, controls
Terminal is connected with the control terminal of first contactor and second contactor；FPGA controller controls Ni-MH battery corresponding first to connect
When tentaculum and second contactor conducting, 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 D.C. contactor and resettable fuse, D.C. contactor and self- recoverage
Electric fuse is connected to the negative pole of Ni-MH battery group after being cascaded；
Described Ni-MH battery is monomer Ni-MH battery or by multiple basic Ni-MH battery units simultaneously for basic Ni-MH battery unit
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. FPGA controller is communicated with Ni-MH battery voltage detection module, obtains the voltage of each Ni-MH battery；
B. FPGA controller, according to the N number of Ni-MH battery voltage obtaining, finds out the maximum Ni-MH battery of magnitude of voltage, and wherein N is more than
Equal to 2；
C. FPGA controller obtains the average voltage of all Ni-MH batteries；
D. jump into when the average voltage deviations of the maximum Ni-MH battery of magnitude of voltage and all Ni-MH batteries are more than a setting threshold values
Step e, otherwise returns to step a；
E. FPGA controller makes electricity by the maximum corresponding first contactor of Ni-MH battery of control voltage value and second contactor
The maximum Ni-MH battery of pressure value and heavy-current discharge resistor coupled in parallel, discharge to Ni-MH battery；
F. wait the time T of setting, FPGA controller disconnects all contactless contactors, program return to step by control terminal
a；
(3) complete the Ni-MH battery high current equilibrium that step (2) is realized controlling based on FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990844.4A CN106385080A (en) | 2016-11-11 | 2016-11-11 | Nickel-hydrogen battery large-current equalizing method based on FPGA control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990844.4A CN106385080A (en) | 2016-11-11 | 2016-11-11 | Nickel-hydrogen battery large-current equalizing method based on FPGA control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106385080A true CN106385080A (en) | 2017-02-08 |
Family
ID=57956921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990844.4A Pending CN106385080A (en) | 2016-11-11 | 2016-11-11 | Nickel-hydrogen battery large-current equalizing method based on FPGA control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106385080A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070046260A1 (en) * | 2005-08-24 | 2007-03-01 | Yazaki Corporation | Apparatus for regulating state of charge in battery assembly |
| US20080036424A1 (en) * | 2006-08-11 | 2008-02-14 | Yazaki Corporation | State-of-charge adjusting apparatus |
| US20090115372A1 (en) * | 2007-11-01 | 2009-05-07 | Honda Motor Co., Ltd. | Discharge control system |
| CN101765958A (en) * | 2007-07-26 | 2010-06-30 | 株式会社Lg化学 | Apparatus and method for balancing of battery cell's charge capacity |
| CN104348234A (en) * | 2014-11-21 | 2015-02-11 | 南京国臣信息自动化技术有限公司 | Battery management system with active equalization system |
| CN105846508A (en) * | 2016-05-22 | 2016-08-10 | 桂林理工大学 | Nickel-metal hydride battery large current equalization method based on single-chip microcomputer control |
-
2016
- 2016-11-11 CN CN201610990844.4A patent/CN106385080A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070046260A1 (en) * | 2005-08-24 | 2007-03-01 | Yazaki Corporation | Apparatus for regulating state of charge in battery assembly |
| US20080036424A1 (en) * | 2006-08-11 | 2008-02-14 | Yazaki Corporation | State-of-charge adjusting apparatus |
| CN101765958A (en) * | 2007-07-26 | 2010-06-30 | 株式会社Lg化学 | Apparatus and method for balancing of battery cell's charge capacity |
| US20090115372A1 (en) * | 2007-11-01 | 2009-05-07 | Honda Motor Co., Ltd. | Discharge control system |
| CN104348234A (en) * | 2014-11-21 | 2015-02-11 | 南京国臣信息自动化技术有限公司 | Battery management system with active equalization system |
| CN105846508A (en) * | 2016-05-22 | 2016-08-10 | 桂林理工大学 | Nickel-metal hydride battery large current equalization method based on single-chip microcomputer control |
Non-Patent Citations (1)
| Title |
|---|
| 何仕品 等: ""锂离子电池管理系统及其均衡模块的设计与研究"", 《汽车工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105449734A (en) | Battery balancing device and charge and discharge balancing method thereof | |
| CN105811534A (en) | Singlechip microcomputer control based large current balancing method of ternary lithium battery | |
| CN105846507A (en) | Lead-acid battery large current equalization method based on single-chip microcomputer control | |
| CN105958573A (en) | Ternary lithium battery heavy current balance control system | |
| CN105958572A (en) | Lithium iron battery heavy current equalization method based on single-chip microcomputer control | |
| CN105811537A (en) | Heavy current balance control system for super capacitors | |
| CN105846508A (en) | Nickel-metal hydride battery large current equalization method based on single-chip microcomputer control | |
| CN204858603U (en) | Battery system | |
| CN105811535A (en) | Large current balancing control system of nickel metal hybrid battery | |
| CN105871028A (en) | High-current equalizing control system for LiMn2O4 batteries | |
| CN105811533A (en) | Large current balancing control system of lithium ferrous battery | |
| CN106451654A (en) | Lithium-iron battery large-current equalization method based on FPGA control | |
| CN105811536A (en) | Singlechip microcomputer control base large current balancing method of lithium manganate battery | |
| CN106385080A (en) | Nickel-hydrogen battery large-current equalizing method based on FPGA control | |
| CN106130111A (en) | A kind of lead-acid battery big current balance method controlled based on DSP | |
| CN105846509A (en) | Super capacitor large current equalization method based on single-chip microcomputer control | |
| CN106505671A (en) | Lithium iron battery high current equilibrium ARM control systems | |
| CN106451655A (en) | Nickel-metal hydride battery large-current equalization method based on ARM control | |
| CN106451656A (en) | Ternary lithium battery large-current balance method based on FPGA (Field Programmable Gate Array) control | |
| CN106450523A (en) | ARM control based high current equalization method for lithium manganese oxide battery | |
| CN106505665A (en) | Ni-MH battery high current equilibrium FPGA control systems | |
| CN106532816A (en) | FPGA control-based high current balancing method of super-capacitors | |
| CN106129493A (en) | A kind of lithium manganate battery big current balance method controlled based on DSP | |
| CN106385082A (en) | Iron lithium battery large-current equalizing method based on ARM control | |
| CN106100048A (en) | Ternary lithium battery big current balance DSP control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170208 |
|
| WD01 | Invention patent application deemed withdrawn after publication |