CN104242381B - A kind of charging method based on Intelligent charging system of electric automobile - Google Patents
A kind of charging method based on Intelligent charging system of electric automobile Download PDFInfo
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- CN104242381B CN104242381B CN201410356273.XA CN201410356273A CN104242381B CN 104242381 B CN104242381 B CN 104242381B CN 201410356273 A CN201410356273 A CN 201410356273A CN 104242381 B CN104242381 B CN 104242381B
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- 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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The present invention relates to a kind of charging method based on Intelligent charging system of electric automobile, in charging process, the state of the monomer lithium ion battery of batteries of electric automobile group is detected by the method, according to battery status and state of electric distribution network, carry out balancedly, charge adaptively, extend battery, this system is additionally provided with wave filter, to reduce in charging process to power distribution network harmonic.
Description
Art
The present invention relates to a kind of Intelligent charging method for electromobile.
Background technology
Electric automobile can reduce mankind's dependence to petroleum resources, along with Global Oil resource is the most exhausted,
Compared with traditional fuel-engined vehicle, electric automobile enjoys favor.After electric automobile forms scale application,
Electrically-charging equipment development and operation of power networks will be brought new challenge: cause new load growth；In charger
The existence of the non-linear element such as fairing, cause a large amount of electric harmonic pollution, cause quality of power supply day
Benefit deteriorates, and strengthens power distribution network operational management difficulty.
Under intelligent grid background, charging electric vehicle is implemented intelligent management, electric automobile can be avoided to fill
The adverse effect that electrical network is caused by electricity demand, and improve the operational efficiency of electrical network.Want to realize electronic vapour
Car charge requirement carries out effective management and use and is necessary for being controlled charging load.
The features such as the high-energy-density of lithium ion battery, memory-less effect, single-unit cycle period length so that it is
There is preferable portability, be electric automobile power battery the most most with prospects.But owing to manufacturing
The restriction of technique, lithium ion battery voltage is only about 3.0V-4.2V.Deposit to constitute high voltage energy
Storage and feeding mechanism, it is necessary to set of cells in series for multiple lithium ion batteries is operated.For composition
The lithium-ion battery monomer of the Li-ion batteries piles of electric automobile, due to capacity, internal resistance and use bar
Part and the change of environment, will result in lithium-ion battery monomer terminal voltage inconsistent.Just because of single electricity
The characteristic in pond always there are differences, and easily causes part lithium-ion battery monomer and cross (owing) in filling (putting) electric process
Pressure, thus battery that (draining) have the most is full of (draining) to cause the battery having the most completely to fill.
This will have a strong impact on the service life of battery, and then the overall use and life-span to Li-ion batteries piles is made
Become adverse effect so that battery performance does not reaches monocell previous level, causes to contract its service life
Short number times even tens times.In order to extend the service life of lithium ion battery of electric automobile group, it is necessary to make institute
Some batteries are held in same depth of discharge.Accordingly, it would be desirable to it is equal to set up Li-ion batteries piles energy
Balance system, carries out balanced management to the energy of each monomer lithium ion battery in cascaded lithium ion batteries group,
Give full play to the ability of each cell in set of cells, extend set of cells whole service life.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of charging side based on Intelligent charging system of electric automobile
Method, detects the shape of the monomer lithium ion battery of batteries of electric automobile group in charging process by the method
State, according to battery status and state of electric distribution network, carries out balancedly, charges adaptively, extends battery and makes
With the life-span, this system is additionally provided with wave filter, to reduce in charging process to power distribution network harmonic.
To achieve these goals, the present invention provides one one kinds based on Intelligent charging system of electric automobile to fill
Method for electrically, this Intelligent charging system includes: batteries of electric automobile detection module, and multiple charging modules fill
Fulgurite reason module, AC-dc converter, harmonic detecting module, filtration module and wireless communication module,
It is characterized in that: the method comprises the steps:
(1) batteries of electric automobile detection module is used to detect the charging of each set of cells of electric automobile in real time
State；
(2) for according to present battery group charged state, above-mentioned charge management module controls above-mentioned each fill
The electricity module charge power to single battery group, to realize the equalizaing charge to each set of cells；
(3) using harmonic detecting module, detection charging system injects the harmonic wave of power distribution network in real time；
(4) according to harmonic detecting situation, using filtration module, produce in elimination charging process in real time is humorous
Ripple；
Described wireless communication module includes wireless signal issue unit and reception of wireless signals unit, wireless communication
Number issue unit is arranged to be connected with batteries of electric automobile detection module, and reception of wireless signals unit is arranged to
Being connected with charge management module, in step (1), wireless signal issue unit is by batteries of electric automobile
Each battery pack charging status that detection module detects is sent to reception of wireless signals unit, by wireless signal
Receive unit and pass to charge management module；
Each set of cells is connected in the battery-end of described charging module in parallel, is filled by described charging module
Electricity；It is equal that described charge management module includes that controller and the charging module corresponding with each set of cells are connected
Weighing apparatus, in step (2), each equalizer is sent out by described controller according to the charged state of each set of cells
Going out instruction, each equalizer controls and each charging module charge power to each set of cells according to instruction；
In step (2) so that each charging of the connection of realizing bidirectional electric energy flow, i.e. AC-dc converter
The bus of module can be that each set of cells is charged by each charging module, and energy also can be passed through by each set of cells
Respective charging module feeds back to above-mentioned bus, thus is filled by electric energy to other set of cells, can realize difference
Between two set of cells of physical location, point-to-point energy exchange, it is also possible to realize multiple set of cells it
Between, many-to-one energy exchange；
Described filtration module is connected by coupling transformer by c-type wave filter and active filter and is constituted,
In step (4), filtration module is in parallel with multiple charging modules to be filtered；
Described batteries of electric automobile detection module, has the high precision electro of the charging current detecting each set of cells
Flow sensor and microprocessor, described in step (1), high precision electric current transducer is by charging current
Signal issues described microprocessor, and described microprocessor determines the charging interval according to charging current signal, fills
Electrical power, and by wireless communication module, charging interval and charge power are sent to charge management module；
In step (2), described batteries of electric automobile detection module and described charge management module, do not stop
Ground carries out data interaction by wireless communication module, calculates and revises charging curve, is controlled in real time；
Meanwhile, described charge management module constantly obtains the current maximum charging current allowed from power distribution network, as
Really the restriction of load is changed by power distribution network, and charge management module can be according to the maximum charging current allowed
And the parameter weighted calculation charging curve again that electric automobile is current, thus carry out optimum charging all the time.
The charging electric vehicle method that the present invention provides has the advantage that the detection that (1) can be real-time is each
The charge condition of set of cells and the electric power thus supplied of power distribution network, and each set of cells is carried out equalizaing charge, excellent
Change charging process, it is to avoid impact to single battery group in charging process.(2) detect in real time and filter
The harmonic wave that charging system brings to power distribution network, reduces the charging system harm to power distribution network；(3) at battery
And use radio communication between charging control control module, reduce the wiring of system, improve charging process
Reliability.
Accompanying drawing explanation
Fig. 1 shows the block diagram of the charging system for electric automobile of the present invention；
Charge management module, charging module and the wireless communication module that Fig. 2 shows in Fig. 1 in system
Composition；
Fig. 3 shows the particular make-up of the filtration module in Fig. 1 in system；
Fig. 4 shows charging method flow chart based on the charging system in Fig. 1.
Detailed description of the invention
Fig. 1 shows the block diagram of a kind of Intelligent charging system of electric automobile according to the present invention, and this is electronic
Automobile intelligent charging system includes: be connected AC-dc converter 2 with power distribution network 1, for by power distribution network
The alternating current of 1 is converted to unidirectional current, and described AC-dc converter 2 includes current transformation module and PWM
Pulse width modulation module, the rectified conversion of 220V civil power of input is obtained necessarily by described current transformation module
Charging current, described PWM pulse width modulation module according to control signal, control ac/dc conversion
The output of device 2；Harmonic detecting module 4, injects the harmonic wave of power distribution network for detection charging system in real time；
Filtration module 4, injects the harmonic wave of power distribution network 1 for eliminating charging system in real time；Multiple charging modules 5,
For multiple set of cells of electric automobile are charged；Charge management module 6, for according to current electricity
Pond charged state, controls the above-mentioned each charging module 5 charge power to single battery group, right to realize
The equalizaing charge of each set of cells；Batteries of electric automobile detection module 8, for detection electric automobile in real time
The charged state of each set of cells；Wireless communication module 7, for batteries of electric automobile detection module 7 He
Communication between charge management module 6.
Charge management module, charging module and the wireless communication module that Fig. 2 shows in Fig. 1 in system
Composition.Charge management module 6 includes controller 61 and equalizer 1-n.Multiple charging modules 5 include point
The charging module 1-n the most corresponding with set of cells 1-n.Described equalizer 1-n correspondence, described controller respectively
61 send instruction according to the charge information of each set of cells to each equalizer, and each equalizer 1-n comes according to instruction
Control and the charging module 1-n charge power to set of cells 1-n, the wherein charge information of set of cells 1-n
Transmitted by described wireless communication module 7.Described charging module 1-n is made up of bidirectional electronic switch.Institute
Stating equalizer 1-n can be PWM signal generator, for the bidirectional electronic switch of charging module 1-n
Send control signal, to control cut-offfing of described bidirectional electronic switch.Described electronics two-way switch, permissible
Use any electrical switch that can realize realizing bidirectional electric energy flow that this area is ripe.
Described wireless communication module 7 includes wireless signal issue unit and reception of wireless signals unit, wireless
Signal sending unit is arranged to be connected with batteries of electric automobile detection module 8, and reception of wireless signals unit sets
Being set to the controller 61 with charge management module 6 be connected, wireless signal issue unit is by electric automobile electricity
Each battery pack charging status that pond detection module 8 detects is sent to reception of wireless signals unit, by wireless
Signal receiving unit passes to the controller 61 of charge management module 6.Described battery pack charging status, bag
Include current charging voltage, charging current, charging interval, battery temperature and SOC value etc..
Set of cells 1-n, is connected in the battery-end of described charging module 1-n in parallel, by described charging module
1-n is charged respectively.Described set of cells 1-n is preferably lithium battery group.
Described Intelligent charging system can realize the two-way flow of energy, and the connection of AC-dc converter 2 is each
The bus 21 of individual charging module can be that set of cells 1-n is charged by charging module 1-n, and set of cells 1-n is also
Energy can be fed back to above-mentioned bus by respective charging module 1-n, thus electric energy be filled to other electricity
Pond group, between two set of cells with the different physical location of realization, point-to-point energy exchange, it is also possible to
Realize between multiple battery, many-to-one energy exchange.It is equal that this is beneficial to improve set of cells integral energy
Weighing apparatus efficiency and balancing speed.
Fig. 3 shows that the particular make-up of the filtration module 3 of the present invention, described filtration module 3 are filtered by c-type
Ripple device 31 and active filter (AFC) 33 are connected by coupling transformer 32 and constitute, and fill with multiple
Electricity wired in parallel.While reaching the purpose of minimizing harmonic wave, it is possible to achieve pressure regulation, reactive-load compensation etc. are many
Plant function.Active filter is the voltage source inverter that SPM is constituted, and solves harmonic wave and dynamically mends
Repay problem.Coupling transformer realizes the electrical isolation of active filter and passive filter, and according to both
Voltage, current class select suitable no-load voltage ratio.Passive filter is mainly made up of single tuned filter,
Utilize inductance and the electric capacity feature that impedance is the least at characteristic harmonics frequency, by this subharmonic in load
Electric current introduces single tuned filter.
Fig. 4 shows the key step of the inventive method:
(1) batteries of electric automobile detection module is used to detect the charging of each set of cells of electric automobile in real time
State；
(2) for according to present battery charged state, above-mentioned charge management module controls above-mentioned each charging
The module charge power to single battery group, to realize the equalizaing charge to each set of cells；
(3) using harmonic detecting module, detection charging system injects the harmonic wave of power distribution network in real time；
(4) according to harmonic detecting situation, using filtration module, produce in elimination charging process in real time is humorous
Ripple.
In step (1), batteries of electric automobile detection module 8 is detected by wireless signal issue unit
Each set of cells 1-n charged state is sent to reception of wireless signals unit, reception of wireless signals unit transmit
To charge management module 6.
Described in step (1), charging current signal is issued described microprocessor by high precision electric current transducer,
Described microprocessor determines charging interval, charge power according to charging current signal, and passes through radio communication
Module, is sent to charge management module by charging interval and charge power.
In step (2), each set of cells 1-n is connected in the battery-end of described charging module 1-n in parallel,
It is charged by described charging module 1-n.
In step 2, each equalizer is sent out by described controller 61 according to the charge information of each set of cells 1-n
Going out instruction, each equalizer controls and each charging module 1-n charging to each set of cells 1-n according to instruction
Power.
In step (2) so that realizing bidirectional electric energy flow, i.e. the connection of AC-dc converter 2 each fill
The bus 21 of electricity module can be that each set of cells 1-n is charged by each charging module 1-n, each set of cells 1-n
Also energy can be fed back to above-mentioned bus 21 by respective charging module 1-n, thus electric energy is filled to it
His set of cells, can realize between two set of cells of different physical location, point-to-point energy exchange, also
Can realize between multiple battery, many-to-one energy exchange.
In step (2), described batteries of electric automobile detection module 8 and described charge management module 6,
Ceaselessly carry out data interaction by wireless communication module, calculate and revise charging curve, control in real time
System；Meanwhile, described charge management module 6 constantly obtains 1 maximum charge taking current permission from power distribution network
Electric current, if the restriction of load is changed by power distribution network 2, charge management module 6 can be according to permission
Maximum charging current and the current parameter weighted calculation charging curve again of electric automobile, thus carry out all the time
Optimum charging.
Described filtration module is connected by coupling transformer by c-type wave filter and active filter and is constituted,
In step (4), filtration module is in parallel with multiple charging modules to be filtered.
Above content is to combine concrete preferred implementation further description made for the present invention,
It cannot be assumed that the present invention be embodied as be confined to these explanations.For the technical field of the invention
For those of ordinary skill, without departing from the inventive concept of the premise, make some equivalents to substitute or bright
Aobvious modification, and performance or purposes are identical, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. a charging method based on Intelligent charging system of electric automobile, this Intelligent charging system includes:
Batteries of electric automobile detection module, multiple charging modules, charge management module, AC-dc converter,
Harmonic detecting module, filtration module and wireless communication module, it is characterised in that: the method includes walking as follows
Rapid:
(1) batteries of electric automobile detection module is used to detect the filling of each set of cells of electric automobile in real time
Electricity condition；
(2) for according to present battery group charged state, above-mentioned charge management module controls above-mentioned each
The charging module charge power to single battery group, to realize the equalizaing charge to each set of cells；
(3) using harmonic detecting module, detection charging system injects the harmonic wave of power distribution network in real time；
(4) according to harmonic detecting situation, use filtration module, eliminate generation in charging process in real time
Harmonic wave；
Described wireless communication module includes wireless signal issue unit and reception of wireless signals unit, wireless communication
Number issue unit is arranged to be connected with batteries of electric automobile detection module, and reception of wireless signals unit is arranged to
Being connected with charge management module, in step (1), wireless signal issue unit is by batteries of electric automobile
Each battery pack charging status that detection module detects is sent to reception of wireless signals unit, by wireless signal
Receive unit and pass to charge management module；
Each set of cells is connected in the battery-end of described charging module in parallel, is filled by described charging module
Electricity；It is equal that described charge management module includes that controller and the charging module corresponding with each set of cells are connected
Weighing apparatus, in step (2), each equalizer is sent out by described controller according to the charged state of each set of cells
Going out instruction, each equalizer controls and each charging module charge power to each set of cells according to instruction；
In step (2) so that the connection of realizing bidirectional electric energy flow, i.e. AC-dc converter each fill
The bus of electricity module can be that each set of cells is charged by each charging module, and energy also can be led to by each set of cells
Cross respective charging module and feed back to above-mentioned bus, thus electric energy is filled to other set of cells, can realize not
Between two set of cells of physical location, point-to-point energy exchange, it is also possible to realize multiple set of cells
Between, many-to-one energy exchange；
Described filtration module is connected by coupling transformer by c-type wave filter and active filter and is constituted,
In step (4), filtration module is in parallel with multiple charging modules to be filtered；
Described batteries of electric automobile detection module, has the high precision electro of the charging current detecting each set of cells
Flow sensor and microprocessor, described in step (1), high precision electric current transducer is by charging current
Signal issues described microprocessor, and described microprocessor determines the charging interval according to charging current signal, fills
Electrical power, and by wireless communication module, charging interval and charge power are sent to charge management module；
In step (2), described batteries of electric automobile detection module and described charge management module, no
Carry out data interaction by wireless communication module with stopping, calculate and revise charging curve, be controlled in real time；
Meanwhile, described charge management module constantly obtains the current maximum charging current allowed from power distribution network, as
Really the restriction of load is changed by power distribution network, and charge management module can be according to the maximum charging current allowed
And the parameter weighted calculation charging curve again that electric automobile is current, thus carry out optimum charging all the time.
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| CN201410356273.XA CN104242381B (en) | 2014-07-24 | 2014-07-24 | A kind of charging method based on Intelligent charging system of electric automobile |
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| CN106329592B (en) * | 2015-06-30 | 2019-05-28 | 华为技术有限公司 | A kind of method and device of balancing energy |
| CN106230081A (en) * | 2016-07-01 | 2016-12-14 | 李红彪 | The harmonic detecting of a kind of charging pile and filtering method |
| CN106965702A (en) * | 2017-05-16 | 2017-07-21 | 北京国网盛源智能终端科技有限公司 | A kind of mobile energy internet gateway device |
| CN110816356B (en) * | 2019-09-27 | 2021-09-14 | 三峡大学 | Power battery charging electrical control system and method |
| CN110797933B (en) * | 2019-09-27 | 2021-05-07 | 三峡大学 | Power battery active equalizing charging electrical control system and method |
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| CN101938015A (en) * | 2010-08-27 | 2011-01-05 | 华南师范大学 | Equalizing charge management system of lithium ion power battery pack |
| CN202260524U (en) * | 2011-09-20 | 2012-05-30 | 湖南省汇粹电力科技有限公司 | Alternate-current charge spot for electromobile |
| CN103607027A (en) * | 2013-12-06 | 2014-02-26 | 淄博明泰电器科技有限公司 | Modular battery equalizing and charging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013178594A (en) * | 2012-02-10 | 2013-09-09 | Enegate:Kk | Power supplying system for electric vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938015A (en) * | 2010-08-27 | 2011-01-05 | 华南师范大学 | Equalizing charge management system of lithium ion power battery pack |
| CN202260524U (en) * | 2011-09-20 | 2012-05-30 | 湖南省汇粹电力科技有限公司 | Alternate-current charge spot for electromobile |
| CN103607027A (en) * | 2013-12-06 | 2014-02-26 | 淄博明泰电器科技有限公司 | Modular battery equalizing and charging system |
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Inventor after: Liu Binfeng Inventor after: Li Huanle Inventor after: Yang Shunyun Inventor before: Deng Liangge Inventor before: Zhou Hongquan Inventor before: Xian Jingrun Inventor before: Li Guo |
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Effective date of registration: 20160629 Address after: 325600 Su Lu Industrial Zone, Liushi Town, Wenzhou, Zhejiang, Yueqing Applicant after: BADA Optical-electrical Technology Co., Ltd. Address before: 635200 Chengdu high tech Zone, Sichuan Tianyi street, No. 3, building 38 Applicant before: SICHUAN HUIYING SCIENCE & TECHNOLOGY CO., LTD. |
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