CN103023105B - Electric motor car charging system with standby switching and charging method - Google Patents
Electric motor car charging system with standby switching and charging method Download PDFInfo
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- CN103023105B CN103023105B CN201210510523.1A CN201210510523A CN103023105B CN 103023105 B CN103023105 B CN 103023105B CN 201210510523 A CN201210510523 A CN 201210510523A CN 103023105 B CN103023105 B CN 103023105B
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Abstract
The invention discloses an electric motor car charging system with standby switching and a charging method. A rectification module consists of a fixing group and a switching group, wherein an output charging port consists of a common group and a standby group, a fixing group module output is connected to every output charging ports of the common group, output anodes and output cathodes of every modules of the switching group are connected to every output charging ports of the standby group, a group of two-way controllable electronic switches are connected in output charging ports of the standby group, a main control unit is used for controlling the number of started switching group modules at the same time, and started module output current can meet charging requirements of the electric motor car. When the output voltage of a starting module rises approximate to the cell voltage of the electric motor car, the switching group module starts the output controllable electronic switches of the module, modules of the fixing group and the switching group are connected to cells and are charged, the utilization efficiency of modules is improved greatly, the quick charging is achieved, charging time requirements for clients can be met and the service life of cells is improved.
Description
Technical field
The present invention relates to a kind of charging system for electric motor car charging.
Background technology
Current electric motor car industry is risen, the electric vehicle battery charger be thereupon equipped with also and then grows up, but at present due to impacts such as price are high, battery reliability is low, the charging interval is long, can only apply among a small circle in local, the electrically-charging equipment of electric motor car also cannot carry out extensive layout, thus electric motor car scope of activities is extremely restricted, and must strengthen the extensive layout of electrically-charging equipment, could promote the extensive development of electric motor car.The extensive layout of electrically-charging equipment is subject to again electrically-charging equipment and drops into high, the rare costliness in land for building, area, down town and Large scale construction charging station, electric motor car few, charging interval longly cannot affect the impacts such as charging station benefit, has a strong impact on the fast development of electric motor car industry.Therefore at present just there is the AC charging facility that an a kind of machine two fills (output charging socket) or a machine four and fills in alternating-current charging pile, because AC charging facility power output can directly from electrical network, power conversion need not be carried out in centre, as long as to meet the maximum requirement of gross power just passable for the distribution component current class between constrained input.But the AC charging time is long, quick charge requirement cannot be met, simultaneously for powerful electric automobile rechargeable batteries such as Electric Transits, electric pressure is higher, cannot interchange be directly adopted to charge, DC charging motor must be adopted to charge, the current DC charging motor overwhelming majority is filled for unit list, charge once can only to an electric automobile, also part charger is had to start the DC charging motor adopting a machine two to fill, but charging module can only be accomplished to be divided into two groups, connect two charging output plugs respectively, can charge to two electric automobiles simultaneously, as shown in Figure 1, this DC charging motor filled due to charger constancy of volume or constant next machine two of situation of single-machine capacity also exists elongated one times of charging interval nearly, just two chargers are simply contained in a cupboard, utilize a set of Control management system, do not deal with problems at all.The DC charging motor that an another kind of machine two fills as shown in Figure 2, it just devises a set of switched system at the output of charger, many one group of delivery outlets, the same time can only give an electric motor car charging, another electric automobile could start charging after last charging electric vehicle must be waited to complete, also do not solve the practical challenges that the development of electric motor car electrically-charging equipment faces.
Summary of the invention
The object of the invention is for solving the investment of existing charging system large, take up an area large, module utilance is low, can not simultaneously to multimode charging, problems such as charge power is limited and propose a kind of charging system of electric powercar with switching for subsequent use and charging method.
The technical scheme that the charging system of electric powercar of band of the present invention switching for subsequent use adopts is: have 2 and above rectification module and export charge port, rectification module forms with switch groups by fixing group, export charge port to form with for subsequent use group by commonly using group, fixing group module exports and is connected with each output charge port of conventional group respectively, fixing group module is not connected with for subsequent use group, the output both positive and negative polarity of each module of switch groups is connected with each output charge port of for subsequent use group, and be all connected one group of two-way controllable electronic switch with between the output charge port of for subsequent use group, switch groups module can partly or entirely be connected with each output charge port of fixing group, master control, display, communication unit module connect modules respectively and export control switch unit module, export and control switch unit model calling in two-way controllable electronic switch.
The technical scheme that the charging method of the charging system of electric powercar of band of the present invention switching for subsequent use adopts has following steps: 1) obtain the electric current and voltage needed for electric motor car charging, open the module of fixing group, according to each module can the size of output current, main control unit judges whether the total output current of fixing group module can meet electric current needed for this charge port or power requirement, when not meeting, main control unit controls the number of opening switch groups module simultaneously, and the module output current making this part open can meet this electric motor car charge requirement; 2) when the output voltage of institute's opening module rises to battery of electric vehicle voltage close to time equal, switch groups module opens the output controllable electronic switch of this part module simultaneously, and the module of fixing group and switch groups is connected with battery and charges; 3) when charge capacity progressively rises, can main control unit calculates according to size of current close a module, when closedown module charging current that can meet now requires, main control unit closes the module of a switch groups, and the output controllable electronic switch of this module all disconnects accordingly; 4) module of switch groups progressively or simultaneously switches to corresponding charge port according to the needs of charging current, the module of switch groups progressively can switch disconnection, until all switchable module of this charge port all switches disconnection, fixing group module progressively closes the fixing group of modules being connected in this charge port, again until this charge port completes charging according to the needs of charging current.
The invention has the beneficial effects as follows:
1, the utilance of module of the present invention significantly promotes, and different charge port can obtain system relatively high power and externally charge, and can realize quick charge requirement, solves client to the requirement in charging interval; Also can require to carry out customization charging to battery of electric vehicle according to client or BMS simultaneously, when client does not need quick charge, adopt this charge mode can improve the life-span of battery.
2, because the most effective point of module has a scope usually, charging system of the present invention can carry out energy-saving charging pattern to each charge port, allow the corresponding operational module of each charge port all be operated between most effective point range, improve entire system charge efficiency, reach energy-conservation object.
3, present system is except reducing the quantity exporting bidirectional switch (high-voltage direct current switch device cost is higher) on the one hand, often group can also be reduced simultaneously and export bidirectional switch switching over number of times, the life-span of large raising diverter switch and reliability, particularly relay and contactor class are with the Switch of mechanical contact.Charging system of the present invention also ensures that conventional charge port can have the module of relatively high power to export at any time and charge to electric motor car simultaneously.Switch groups module can be switched to each charge port for subsequent use of needs as required flexibly, and accomplish top-tier customer Priority Service, quickly-chargeable, client also can adopt small area analysis trickle charge, to improve reliability and the cycle life of battery.
4, system module number can not be used in and assort at the very start, may increase flexibly according to the development of electric motor car, when electric motor car increases, more progressively complementary module, reach the object of reducing investment outlay, meanwhile, need not repeated construction be carried out.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is the structure chart of two kinds of different existing chargers;
Fig. 3 is the structure chart of the present invention's many charge electric vehicles charger;
Fig. 4 is instance graph of the present invention;
Fig. 5 is the application illustration of Fig. 3.
Embodiment
As shown in Figure 3, present system has N number of rectification module, have M export charge port, N, M be 2 and more than.Rectification module is divided into two classifications, is referred to as fixing group and switch groups, and the module of each group might not be put together, can place flexibly according to system requirements.Export charge port and be divided into conventional group and for subsequent use group, fixing group module exports and is connected with each output charge port of conventional group respectively, centre need not add diverter switch, the number of modules that each output charge port of conventional group connects is not necessarily identical, and the module that the charge port that frequency of utilization is higher can be fixedly linked also can be more.Fixing group module is not connected with for subsequent use group.The output both positive and negative polarity of each module (also several wired in parallel can be used as together a module to use) of switch groups is connected with each output charge port of for subsequent use group, is all connected with one group of two-way controllable electronic switch device between the output charge port of they and for subsequent use group.Master control, display, communication unit module connect each rectification module respectively and export control switch unit module, export and control switch unit model calling in two-way controllable electronic switch device.Switch groups module can partly or entirely be connected with each output charge port of fixing group.Under normal circumstances, main use fixing group module exports charge port with conventional group, and when conventional group of output charge port underpower or undercurrent, for subsequent use group of module can partly or entirely be cut; Only have when conventional charge port is not enough, just use charge port for subsequent use, by the charge port for subsequent use selected by client, during electric current needed for electric motor car charging, according to electric motor car charging current (or power), the module of switch groups requires that the module switching corresponding number is to this charge port.
Whole charging process can be as follows, but be not limited to this course of work, when electric motor car exports after charge port is connected with conventional group, charger and the electric motor car that need charge are by connection setup information interaction, obtain the battery information of electric motor car, as car has BMS(battery management system) time, just can obtain the electric current and voltage needed for electric motor car charging, the rectification module of fixing group is opened, according to each module can the size of output current, whether system master unit judges fixes group module total output current can meet electric current needed for this charge port or power requirement, when not meeting, main control unit controls the number of opening switch groups module simultaneously, the module output current making this part open can meet this electric motor car charge requirement, the output voltage of institute's opening module rises to battery of electric vehicle voltage close to time equal, fixing group all starts to be connected with battery with the module of switch groups and starts to charge, just switch groups module needs the output gate-controlled switch simultaneously opening this part module, the all modules be connected with this output charge port start to charging battery of electric vehicle.Export gate-controlled switch and should use two-way gate-controlled switch, different electric motor car can be prevented when charging due to their cell voltage differences influence each other (as anti-filling, crossfire etc.) even cause certain danger.When charge capacity progressively rises, charged electrical fails to be convened for lack of a quorum and starts to decline, at this moment, can control unit calculates according to size of current close a module, when closedown module charging current that also can meet now requires, main control unit closes the module of a switch groups, and the output switch of this module all disconnects accordingly.Disconnect module and can be switched to another and need output charge port of charging or disconnect idle (holding state), another is electronicly charged.The module of switch groups can need progressively to switch into corresponding charge port according to charging current (or power), can also to switch to corresponding charge port simultaneously; Same, the module of switch groups can progressively switch out (disconnection); Until all switchable module of this charge port all switches disconnection.Fixing group module progressively closes the fixing group of modules being connected in this charge port, again until this charge port completes charging according to the needs of charging current.
When electric motor car exports after charge port is connected with for subsequent use group, needed for the module that main control unit is left according to switch groups and the electric motor car that is connected with this output charge port, charging current carries out switching into corresponding number module, when number of modules is not enough, then first give this electric motor car charging with this part module, when having switch groups module to disconnect etc. conventional group of output charge port, be cut into this for subsequent use group again and export charge port, until meet charging current needed for this charge port for this reason, as client was not strict with the time, also directly trickle charge can be carried out with switching remaining module to this electric motor car.In time being full of soon, by current needs, progressively module is disconnected and switch out.
Present invention employs a kind of multimode blocking DC charging system and automatic switchover output module, main feature is the difference according to different charging batteries of electric automobile voltage, electric current, all for modular DC charging system modules is exported and switches as required.Because the voltage of battery charging is directly related with the internal characteristic of battery with charging current, different battery all has different charging curve requirements, as: lead-acid battery has floating charge, all the different conditions such as to fill, float charge voltage is different from even charging voltage, charging current along with the increase of charging capacity be constantly change, thus in charging process, different time is also change to the power requirement of charger, and the present invention changes with the change in charging interval the DC electric car charging system that this feature realizes multioutlet according to the electric current and voltage of battery charging.The charge port having module to be directly connected can directly be charged to electric motor car, also the module of gate-controlled switch can be utilized to come in charge simultaneously, also can utilize output one pole have the module of two-way gate-controlled switch come in charging, maybe can utilize export positive and negative all have the module of two-way gate-controlled switch come in charging.The output charge port not having module to be directly connected, charging of coming in can only be switched with having the module exporting gate-controlled switch, maybe can only exporting the positive and negative module all having a two-way gate-controlled switch and switch charging of coming in having, maybe the module of two-way gate-controlled switch can only being had to switch charging of coming in having output one pole.The modules of this part of module switchable exports can receive different output charge port by gate-controlled switch, it is switch according to by the size of battery charge of charging that this part module switches, or to fill soon according to customer requirement or BMS system requirements switches, or switch according to module efficiency maximum point range intervals.
The output of each module in present system only can add two-way gate-controlled switch in output one pole, and another pole is connected in parallel, and is just adding two-way controllable electronic switch as exported, and all output is negative to be parallel with together, also can reach same effect, as shown in Figure 4.
The two-way controllable electronic switch of output in present system can select different switches, as two MOSFET, relay, contactor, controlled sky are opened, Fig. 5 is exactly a kind of embody rule for two MOSFET, has part to export charge port and do not receive switch groups module in conventional group.
Claims (1)
1. the charging method of the charging system of electric powercar of band switching for subsequent use, adopt the charging system of electric powercar of band switching for subsequent use, this charging system of electric powercar has 2 and above rectification module and exports charge port, rectification module forms with switch groups by fixing group, export charge port to form with for subsequent use group by commonly using group, fixing group module exports and is connected with each output charge port of conventional group respectively, fixing group module is not connected with for subsequent use group, the output both positive and negative polarity of each module of switch groups is connected with each output charge port of for subsequent use group, and be all connected one group of two-way controllable electronic switch with between the output charge port of for subsequent use group, switch groups module section or be all connected with each output charge port of fixing group, master control, display, communication unit module connect modules respectively and export control switch unit module, export and control switch unit model calling in two-way controllable electronic switch, it is characterized in that having following steps:
1) electric current and voltage needed for electric motor car charging is obtained, open the module of fixing group, according to each module can the size of output current, main control unit judges whether the total output current of fixing group module can meet electric current needed for this charge port or power requirement, when not meeting, main control unit controls the number of opening switch groups module simultaneously, and the module output current making this part open can meet this electric motor car charge requirement;
2) when the output voltage of institute's opening module rises to equal with battery of electric vehicle voltage, switch groups module opens the output controllable electronic switch of this part module simultaneously, and the module of fixing group and switch groups is connected with battery and charges;
3) when charge capacity progressively rises, can main control unit calculates according to size of current close a module, when closedown module charging current that can meet now requires, main control unit closes the module of a switch groups, and the output controllable electronic switch of this module all disconnects accordingly;
4) module of switch groups progressively or simultaneously switches to corresponding charge port according to the needs of charging current, the module of switch groups progressively switches disconnection, until all switchable module of this charge port all switches disconnection, fixing group module progressively closes the fixing group of modules being connected in this charge port, again until this charge port completes charging according to the needs of charging current;
5)when electric motor car exports after charge port is connected with for subsequent use group, needed for the module that main control unit is left according to switch groups and the electric motor car that is connected with this output charge port, charging current carries out switching into corresponding number module, when number of modules is not enough, this electric motor car charging is first given with this part module, when having switch groups module to disconnect etc. conventional group of output charge port, be cut into this for subsequent use group again and export charge port, until meet charging current needed for this charge port for this reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510523.1A CN103023105B (en) | 2012-12-04 | 2012-12-04 | Electric motor car charging system with standby switching and charging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510523.1A CN103023105B (en) | 2012-12-04 | 2012-12-04 | Electric motor car charging system with standby switching and charging method |
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| Publication Number | Publication Date |
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| CN103023105A CN103023105A (en) | 2013-04-03 |
| CN103023105B true CN103023105B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210510523.1A Expired - Fee Related CN103023105B (en) | 2012-12-04 | 2012-12-04 | Electric motor car charging system with standby switching and charging method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795124A (en) * | 2014-02-19 | 2014-05-14 | 中达电通股份有限公司 | Control system for realizing parallel-connection circulating charging of multiple sets of lithium batteries and method thereof |
| CN105244948A (en) * | 2015-10-10 | 2016-01-13 | 陶杰 | Electric automobile smart charging pile system |
| CN109455106B (en) | 2018-10-17 | 2022-07-26 | 国网浙江省电力有限公司杭州供电公司 | Intelligent charging station for electric automobile |
| WO2022099699A1 (en) * | 2020-11-16 | 2022-05-19 | 杭州铅锂智行科技有限公司 | Charger and charging method thereof |
| CN112622679A (en) * | 2020-11-16 | 2021-04-09 | 蚌埠睿德新能源科技有限公司 | A charger |
| DE102021101600A1 (en) * | 2021-01-26 | 2022-07-28 | Audi Aktiengesellschaft | Electrical system for a motor vehicle, motor vehicle and method for operating an electrical system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020070705A1 (en) * | 2000-06-14 | 2002-06-13 | Buchanan William D. | Battery charging system and method |
| JP4135155B2 (en) * | 2004-07-02 | 2008-08-20 | 日産自動車株式会社 | Charging stand |
| JP2008199752A (en) * | 2007-02-09 | 2008-08-28 | Kyushu Electric Power Co Inc | Charger |
| CN101931252A (en) * | 2010-08-26 | 2010-12-29 | 艾默生网络能源有限公司 | Charging system for electric automobile |
| CN202121365U (en) * | 2011-05-04 | 2012-01-18 | 北京交通大学 | Charging system |
| CN102255364B (en) * | 2011-08-02 | 2014-12-10 | 重庆市电力公司电力科学研究院 | Charging equipment of electric vehicle battery |
| CN102664447A (en) * | 2012-04-26 | 2012-09-12 | 华南理工大学 | Direct current (DC) charging system of electric automobile and control method thereof |
| CN203151125U (en) * | 2012-12-04 | 2013-08-21 | 江苏嘉钰新能源技术有限公司 | Electric motor car charging system with standby switching and charging method |
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Owner name: HARBIN GUANTUO POWER SUPPLY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: JIANGSU JIAYU NEW POWER TECHNOLOGY CO., LTD. Effective date: 20150428 |
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Effective date of registration: 20150428 Address after: 150001 room 368, 1508 Changjiang Road, Nangang concentration area, Harbin, Harbin, Heilongjiang Applicant after: Harbin Guantuo Power Equipment Co., Ltd. Address before: 212000 Zhenjiang province Jiangsu City Nanshan District of Zhenjiang Dagang Yinshan Road Applicant before: Jiangsu Jiayu New Power Technology Co., Ltd. |
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