CN103023105A - 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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- CN103023105A CN103023105A CN2012105105231A CN201210510523A CN103023105A CN 103023105 A CN103023105 A CN 103023105A CN 2012105105231 A CN2012105105231 A CN 2012105105231A CN 201210510523 A CN201210510523 A CN 201210510523A CN 103023105 A CN103023105 A CN 103023105A
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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 the electric motor car charging.
Background technology
The electric motor car industry is risen at present, the electric motor car charger that thereupon is equipped with also and then grows up, but at present because impacts such as price is high, the battery reliability is low, charging interval length, can only use among a small circle in the part, the electrically-charging equipment of electric motor car also can't carry out extensive layout, thereby the 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 be subject to again electrically-charging equipment drop into high, the rare costliness in land for building, area, down town can't the Large scale construction charging station, few, charging interval of electric motor car longly affects the impact such as charging station benefit, has a strong impact on the fast development of electric motor car industry.Therefore at present alternating-current charging pile an a kind of machine two just occurred and has filled the AC charging facility that (output charging socket) or a machine four fill, because AC charging facility power output can be directly from electrical network, power conversion need not be carried out in the centre, and maximum requirement is just passable as long as the distribution device current class of input and outlet chamber satisfies gross power.But the AC charging time is long, can't satisfy the quick charge requirement, simultaneously for powerful electric automobile rechargeable batteries such as Electric Transits, electric pressure is higher, can't directly adopt to exchange and charge, must adopt dc charging motor to charge, the present dc charging motor overwhelming majority is filled for the unit list, charge once can only for an electric automobile, also there is the part charger to begin the dc charging motor that adopts a machine two to fill, but can only accomplish charging module is divided into two groups, connect respectively two charging output plugs, can charge for simultaneously two electric automobiles, as shown in Figure 1, this because the dc charging motor that charger constancy of volume or constant next machine two of situation of single-machine capacity fill exists elongated one times of charging interval nearly, just two chargers simply are contained in the cupboard, utilize a cover control and 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 has just designed a cover switched system at the output of charger, many one group of delivery outlets, the same time can only be given an electric motor car charging, could begin charging after another electric automobile must wait last charging electric vehicle to finish, also not solve the practical challenges that the development of electric motor car electrically-charging equipment faces.
Summary of the invention
The objective of the invention is for solving existing charging system investment greatly, take up an area greatly, the module utilance is low, can not be simultaneously to the multimode charging, and the problem 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: 2 and above rectification module and output charge port are arranged, rectification module is comprised of with switch groups fixing group, the output charge port is comprised of with for subsequent use group group commonly used, fixedly pack module output links to each other with each output charge port of group commonly used respectively, fixedly pack module does not link to each other with for subsequent use group, the output both positive and negative polarity of each module of switch groups links to each other with each of for subsequent use group output charge port, and with all be connected one group of two-way controllable electronic switch between for subsequent use group output charge port, the switch groups module can partly or entirely link to each other with the charge port of respectively exporting of fixing group; Master control, demonstration, communication unit module connect respectively modules and output control switch unit module, and output control switch unit module is connected 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 is to have following steps: 1) obtain the required electric current and voltage of electric motor car charging, open the module of fixing group, according to each module can output current size, main control unit judges fixedly whether the total output current of pack module can satisfy the required electric current of this charge port or power requirement, in the time can not satisfying, main control unit is controlled the number of opening the switch groups module simultaneously, makes the module output current of this part unlatching can satisfy this electric motor car charging demand; 2) approach when equating when the output voltage of institute's opening module rises to battery of electric vehicle voltage, the switch groups module is opened the output controllable electronic switch of this part module simultaneously, the fixing group and the charging that links to each other with battery of the module of switch groups; 3) when charge capacity progressively rises, can main control unit calculates according to size of current close a module, when the charging current of closing a module and can satisfy this moment required, main control unit was closed 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 can progressively be switched disconnection, until all switchable module of this charge port are all switched disconnection, fixedly pack module is progressively closed the fixedly group modules that is connected in this charge port again according to the needs of charging current, until this charge port is finished charging.
The invention has the beneficial effects as follows:
1, the utilance of module of the present invention significantly promotes, and different charge port can both obtain system's relatively high power and externally charge, and can realize the quick charge requirement, solves the requirement of client to the charging interval; Also can require battery of electric vehicle is customized charging according to client or BMS simultaneously, when the 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 both be carried out the 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 the entire system charge efficiency, reach energy-conservation purpose.
3, system of the present invention is except the quantity that can reduce on the one hand output bidirectional switch (the high-voltage direct current switch device cost is higher), can also reduce simultaneously by every group of output bidirectional switch switching over number of times, life-span and the reliability, particularly relay of large raising diverter switch and contactor class are with the Switch of mechanical contact.Charging system of the present invention guarantees also that simultaneously charge port commonly used can both have the module output of relatively high power that electric motor car is charged at any time.The switch groups module can switch to each charge port for subsequent use that needs as required flexibly, accomplishes the top-tier customer Priority Service, and quickly-chargeable, the client also can adopt little electric current trickle charge, to improve reliability and the cycle life of battery.
4, the system module number can not be used at the very start and assort, and may increase flexibly according to the development of electric motor car, and when electric motor car increased, complementary module progressively reached the purpose of reducing investment outlay again, simultaneously, need not carry out repeated construction.
Description of drawings
Fig. 1 is the structure chart of two kinds of different existing chargers with Fig. 2;
Fig. 3 is the structure chart of many charge electric vehicles of the present invention 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, there be N rectification module in system of the present invention, have M output 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.The output charge port is divided into commonly used the group and for subsequent use group, fixedly pack module output links to each other with each output charge port of group commonly used respectively, the centre need not add diverter switch, the number of modules that each output charge port of group commonly used 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.Fixedly pack module does not link to each other with for subsequent use group.The output both positive and negative polarity of each module of switch groups (also several modules can be connected in parallel be used as a module come with) links to each other with each of for subsequent use group output charge port, all is 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, demonstration, communication unit module connect respectively each rectification module and output control switch unit module, and output control switch unit module is connected in two-way controllable electronic switch device.The switch groups module can partly or entirely link to each other with the charge port of respectively exporting of fixing group.Under normal circumstances, the main fixedly pack module and group output charge port commonly used of using, when group output charge port underpower commonly used or undercurrent, pack module for subsequent use can partly or entirely be cut; Only have when charge port commonly used is not enough, just use charge port for subsequent use, by the selected charge port for subsequent use of client, during according to the required electric current of electric motor car charging, the module of switch groups requires to switch the module of corresponding number to this charge port according to electric motor car charging current (or power).
Whole charging process can be as follows, but be not limited to this course of work, after electric motor car and group output charge port commonly used link to each other, charger passes through the connection setup information interaction with the electric motor car that needs charging, obtain the battery information of electric motor car, such as car the BMS(battery management system is arranged) time, just can obtain the required electric current and voltage of electric motor car charging, the rectification module of fixing group is opened, according to each module can output current size, whether the system master unit judges processed fixedly total output current of pack module can satisfy the required electric current of this charge port or power requirement, in the time can not satisfying, main control unit is controlled the number of opening the switch groups module simultaneously, make the module output current of this part unlatching can satisfy this electric motor car charging demand, the output voltage of institute's opening module rises to battery of electric vehicle voltage and approaches when equating, fixing group and the module of switch groups all begin to link to each other with battery and begin to charge, just the switch groups module need to be opened the output gate-controlled switch of this part module simultaneously, and all modules that link to each other with this output charge port begin to charging battery of electric vehicle.The output gate-controlled switch should use two-way gate-controlled switch, can prevent that different electric motor cars from influencing each other (such as anti-filling, crossfire etc.) owing to their cell voltage differences even cause certain danger in when charging.When charge capacity progressively rises, charged electrical fails to be convened for lack of a quorum and begins to descend, at this moment, can control unit calculates according to size of current close a module, when the charging current of closing a module and also can satisfy this moment requires, main control unit is closed the module of a switch groups, and the output switch of this module all disconnects accordingly.Disconnect module and can switch to another the output charge port that need to charge or disconnect idle (holding state), to another electronic charging.The module of switch groups can progressively be switched according to the needs of charging current (or power) into corresponding charge port, can be also to switch to simultaneously corresponding charge port; Same, the module of switch groups can progressively switch (disconnection); Until all switchable module of this charge port are all switched disconnection.Fixedly pack module is progressively closed the fixedly group modules that is connected in this charge port again according to the needs of charging current, until this charge port is finished charging.
When electric motor car after charge port links to each other with for subsequent use group of output, main control unit switches into the corresponding number module with the required charging current of electric motor car that links to each other with this output charge port according to the remaining module of switch groups, when the number of modules deficiency, then give first this electric motor car charging with this part module, when having the switch groups module to disconnect etc. commonly used group of output charge port, be cut into again this for subsequent use group output charge port, until satisfy the required charging current of this charge port for this reason, such as the client time is not strict with, can directly carries out trickle charge with switching remaining module to this electric motor car yet.When treating to be full of soon, press the electric current demand, progressively module is disconnected and switch out.
The present invention has adopted a kind of multimode blocking DC charging system and automatic switchover output module, and main feature is the difference according to different charging batteries of electric automobile voltages, electric current, and all the module outputs of modular DC charging system are switched as required.Because the voltage of battery charging is directly related with the internal characteristic of battery with charging current, different batteries all have different charging curve requirements, floating charge is arranged, all the different conditions such as fill such as: lead-acid battery, float charge voltage is different from even charging voltage, charging current is along with the increase of charging capacity is constantly to change, thereby different time also changes the power requirement of charger in charging process, and the present invention changes the dc electric car charging system that these characteristics realize multioutlet according to the electric current and voltage of battery charging with the variation in charging interval.The charge port that has module directly to link to each other can directly be charged to electric motor car, also can utilize simultaneously the module of gate-controlled switch to come in to charge, also can utilize output one utmost point that the charging of coming in of the module of two-way gate-controlled switch is arranged, maybe can utilize the charging of coming in of the positive and negative module that two-way gate-controlled switch all arranged of output.The output charge port that does not have module directly to link to each other, can only switch the charging of coming in the module that the output gate-controlled switch is arranged, maybe can only be with there being output positive and negatively all to have the module of two-way gate-controlled switch to switch the charging of coming in, maybe can only be with there being output one utmost point to have the module of two-way gate-controlled switch to switch the charging of coming in.The modules output of switchable this part of module can be received different output charge port by gate-controlled switch, this part module switching is to switch according to the size of the battery charge that is recharged, or fill soon or the BMS system requirements switches according to customer requirement, or switch according to module efficiency maximum point scope interval.
The output of each module in the system of the present invention can only add two-way gate-controlled switch at output one utmost point, and another utmost point is connected in parallel, and is just adding two-way controllable electronic switch such as output, and all outputs are 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 the system of the present invention can be selected different switches, open etc. such as two MOSFET, relay, contactor, controlled sky, Fig. 5 is exactly a kind of concrete application as an example of two MOSFET example, has part output charge port not receive the switch groups module in the group commonly used.
Claims (5)
1. charging system of electric powercar with switching for subsequent use, 2 and above rectification module and output charge port are arranged, it is characterized in that: rectification module is comprised of with switch groups fixing group, the output charge port is comprised of with for subsequent use group group commonly used, fixedly pack module output links to each other with each output charge port of group commonly used respectively, fixedly pack module does not link to each other with for subsequent use group, the output both positive and negative polarity of each module of switch groups links to each other with each of for subsequent use group output charge port, and with all be connected one group of two-way controllable electronic switch between for subsequent use group output charge port, the switch groups module can partly or entirely link to each other with the charge port of respectively exporting of fixing group; Master control, demonstration, communication unit module connect respectively modules and output control switch unit module, and output control switch unit module is connected in two-way controllable electronic switch.
2. a kind of charging system of electric powercar with switching for subsequent use according to claim 1, it is characterized in that: output one utmost point of each module connects two-way controllable electronic switch, and another utmost point is connected in parallel.
3. a kind of charging system of electric powercar with switching for subsequent use according to claim 1 is characterized in that: two-way controllable electronic switch is that two MOSFET, relay, contactor or controlled sky are opened.
4. the charging method of the charging system of electric powercar with switching for subsequent use as claimed in claim 1 is characterized in that having following steps:
1) obtains the required electric current and voltage of electric motor car charging, open the module of fixing group, according to each module can output current size, main control unit judges fixedly whether the total output current of pack module can satisfy the required electric current of this charge port or power requirement, in the time can not satisfying, main control unit is controlled the number of opening the switch groups module simultaneously, makes the module output current of this part unlatching can satisfy this electric motor car charging demand;
2) approach when equating when the output voltage of institute's opening module rises to battery of electric vehicle voltage, the switch groups module is opened the output controllable electronic switch of this part module simultaneously, the fixing group and the charging that links to each other with battery of the module of switch groups;
3) when charge capacity progressively rises, can main control unit calculates according to size of current close a module, when the charging current of closing a module and can satisfy this moment required, main control unit was closed 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 can progressively be switched disconnection, until all switchable module of this charge port are all switched disconnection, fixedly pack module is progressively closed the fixedly group modules that is connected in this charge port again according to the needs of charging current, until this charge port is finished charging.
5. charging method according to claim 4, it is characterized in that: when electric motor car after charge port links to each other with for subsequent use group of output, main control unit switches into the corresponding number module with the required charging current of electric motor car that links to each other with this output charge port according to the remaining module of switch groups, when the number of modules deficiency, give first this electric motor car charging with this part module, when having the switch groups module to disconnect etc. commonly used group of output charge port, be cut into again this for subsequent use group output charge port, until satisfy the required charging current of 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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| CN103023105A true CN103023105A (en) | 2013-04-03 |
| CN103023105B CN103023105B (en) | 2015-07-01 |
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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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| 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 |
| WO2020078289A1 (en) * | 2018-10-17 | 2020-04-23 | 国网浙江省电力有限公司杭州供电公司 | Smart charging station for electrical vehicles |
| CN112622679A (en) * | 2020-11-16 | 2021-04-09 | 蚌埠睿德新能源科技有限公司 | A charger |
| 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 |
| US20220234465A1 (en) * | 2021-01-26 | 2022-07-28 | Audi Ag | On-board network for a motor vehicle, motor vehicle, and method for operating an on-board network |
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