CN104065148B - Electric vehicle charging system and charging method - Google Patents

Electric vehicle charging system and charging method Download PDF

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Publication number
CN104065148B
CN104065148B CN201410323966.9A CN201410323966A CN104065148B CN 104065148 B CN104065148 B CN 104065148B CN 201410323966 A CN201410323966 A CN 201410323966A CN 104065148 B CN104065148 B CN 104065148B
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charging
module
switch
bus
electric automobile
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CN104065148A (en
Inventor
吕有根
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Shenzhen Increte Polytron Technologies Inc
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Shenzhen Increte Polytron Technologies Inc
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses an electric vehicle charging system and charging method. The electric vehicle charging system comprises a communication module, an on-off control module and a plurality of switch modules, wherein the on-off control module is electrically connected with the switch modules; at least two sets of direct current buses are provided; charging modules can be connected to the two sets of direct current buses through the switch modules; direct current output power distribution switches are in fit with the direct current buses in number; one end of the communication module is electrically connected with the direct current output power distribution switches; the other end of the communication module is electrically connected with the on-off control module. Multiple electric vehicles can be charged at the same time through the charging modules with the minimum number, so that the charging modules with full loads are fully utilized for working, the utilization rate of the charging modules is improved, the charging efficiency is high, and investment of the system is lowered.

Description

Charging system for electric automobile and its charging method
Technical field
The present invention relates to a kind of charging system of automobile, more particularly, to a kind of charging system for electric automobile and its charging side Method.
Background technology
With the aggravation of the in short supply of fossil energy and air pollution, need the automobile that type can be expected to fossil badly and improve, Thus, the electric automobile powered with battery for automobile is arisen at the historic moment.Traditional charging system for electric automobile is generally divided into one Formula charger, or split type charger, are characterized in comprising a charger and charging pile, can only connect an electric automobile Battery and BMS (battery management system (BATTERY MANAGEMENT SYSTEM)), realize to a charging electric vehicle, that is, One machine one fills, as shown in Figure 1.
As shown in Fig. 2 conventional electric automobile one machine one fills with following features:Input panel switches QF1 including exchange is total, AC measurment multifunctional meter, AC/DC charging module M1~M10, module exchanges input switch Q1~Q10, and charging module output is straight Stream bus L+/L-, direct current output measures multifunctional meter, direct current output panel switches QF2.The total panel switches that input of exchange are connected Afterwards, the civil power of charger changes into direct current and through dc bus L+/L- to DC distribution output switch through AC/DC charging module To charging electric vehicle.However, inventor needs high current when finding that in long-term experiment the feature that battery charges is and starts Charge, progressive full of rear it is only necessary to small current, and the low current charge time is longer than the large current charge time, so above-mentioned In the charge mode of one machine one punching, charger has that utilization rate is low, charge efficiency is low;And when the multiple stage automobile that need to charge When, need multiple chargers, high cost.For this reason, it is necessary to improve to the charging system of above-mentioned electric automobile.
Content of the invention
The technical problem to be solved is:There is provided a kind of charging module utilization rate height, charge efficiency high, and can be real The charging system for electric automobile to multiple stage charging electric vehicle for the existing charger.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:A kind of charging system for electric automobile is provided, Input panel switches, dc bus, direct current output panel switches and multiple charging module including exchange is total, also include communicating mould Block, switch control module and multiple switch module, described switch control module is electrically connected with multiple switch module respectively;Described The quantity of dc bus is at least two groups, and described charging module be can access on two groups of dc bus by switch module;Described straight The quantity flowing out panel switches is adapted to the quantity of dc bus;Described communication module one end and batteries of electric automobile to be charged Management system connects, and the other end is electrically connected with switch control module;
Described communication module, for being converted to control information by the charging quantity of the electric automobile after collection and charge data It is sent to switch control module, wherein, described charge data is the charging current and charging voltage needed for each electric automobile;
Described switch module, for turning on/off charging module and charging bus;
Described switch control module, turns on/off corresponding switching molding for the charge data according to each electric automobile The son switch of block, making on dc bus and connecing the two or more charging modules being adapted with described charge data is electricity Electrical automobile charges.
In order to solve above-mentioned technical problem, another technical solution used in the present invention is:A kind of electric automobile is provided to fill The charging method of electric system, including step:
S01, the two or more electric motor car charging ends of distribution;
S02, the charge data detecting the charging quantity of electric automobile of charging end and gathering each electric automobile, wherein, Described charge data is charging voltage and the charging current of electric automobile;
S03, charge data is sent to switch control module;
S04, connect/switch corresponding charging module according to the charge data of each electric automobile, make on dc bus simultaneously Connecing the two or more charging modules being adapted with described charge data is charging electric vehicle.
The beneficial effects of the present invention is:Charging system for electric automobile of the present invention passes through switch module using by charging module Access on two groups or more dc bus, and configure a switch control module, this switch control module being capable of basis The quantity of electric automobile and charge data ON switch module, and also it is equipped with communication module in DC output end, can will adopt The data of electric automobile of collection and its charge data are delivered to switch control module, by switch module, switch control module, lead to News module and two groups or more dc bus, are capable of to two or more charging electric vehicles.This The charging module that invention can realize configuring minimum number charges to multiple stage electric automobile, to make full use of charging module simultaneously Operate at full capacity, improve the utilization rate of charging module, charge efficiency is high, advantageously reduces the investment of system.
Brief description
Fig. 1 is charging system for electric automobile connection figure of the prior art;
Fig. 2 is the circuit diagram of charging system of electric powercar in Fig. 1;
Fig. 3 is the charging system of electric powercar connection figure of the present invention;
Fig. 4 is the circuit diagram of charging system of electric powercar in Fig. 3;
Fig. 5 is the charging method flow chart of charging system of electric powercar of the present invention;
Fig. 6 is the switching schematic diagram of charging module M;
Fig. 7 is the sequential chart of the voltage, electric current and switch K1 and K2 before and after the switching of charging module M.
Label declaration:
QF1- exchange total input panel switches, 11- AC measurment multifunctional meter, 12- first dc bus, 13- second are straight Stream bus, 14- direct current output metering multifunctional meter, QF2- direct current output panel switches, 15- charging module, 16- exchange input are opened Pass, 17- switch control module, 18- switch module.
Specific embodiment
By the technology contents of the detailed description present invention, structural feature, realized purpose and effect, below in conjunction with embodiment And coordinate accompanying drawing to be explained in detail.
The design of most critical of the present invention is:The charge data of electric automobile is delivered to out by the present invention using communication module Close control module, and charging module and dc bus are connected by switch control module controlling switch module, be capable of a machine Fill, charging module utilization rate is high, charge efficiency is high more.
Refer to Fig. 3 and Fig. 4, refer to Fig. 3 and Fig. 4, a kind of charging system for electric automobile, input distribution including exchange is total Switch QF1, dc bus, direct current output panel switches QF2 and multiple charging module 15, also include communication module, switch control rule Module 17 and multiple switch module 18, described switch control module 17 is electrically connected with multiple switch module 18 respectively;Described straight The quantity of stream bus is at least two groups, and described charging module 15 be can access on two groups of dc bus by switch module 18;Described The quantity of quantity and dc bus that direct current goes out panel switches is adapted to;Described communication module one end and electric automobile to be charged electricity Pond management system connects, and the other end is electrically connected with switch control module 17;
Described communication module, for being converted to control information by the charging quantity of the electric automobile after collection and charge data It is sent to switch control module 17, wherein, described charge data is the charging current and charging voltage needed for each electric automobile;
Described switch module 18, for turning on/off charging module 15 and charging bus;
Described switch control module 17, turns on/off corresponding switch for the charge data according to each electric automobile The son switch of module 18, is made on dc bus and connects the two or more charging modules being adapted with described charge data 15 is charging electric vehicle.
Above-mentioned direct current output panel switches QF2 may be disposed on charging pile, can pass through lead external on charging pile Charging gun.
Knowable to foregoing description, the beneficial effects of the present invention is:Charging system for electric automobile employing of the present invention will be charged Module 15 is accessed on two groups or more dc bus by switch module 18, and configures a switch control module 17, This switch control module 17 can be according to the quantity of electric automobile and charge data ON switch module 18 and also defeated in direct current Go out end and be equipped with communication module, the data of the electric automobile of collection and its charge data can be delivered to switch control module 17, By switch module 18, switch control module 17, communication module and two groups or more dc bus, it is right to be capable of Two or more charging electric vehicles.The present invention can realize the charging module 15 that charger configures minimum number, real Existing multiple stage electric automobile charges, make full use of charging module 15 to operate at full capacity simultaneously.
Further, also include isolation module, one end of described isolation module is connected with charging module 15, isolation module The other end is electrically connected with switch module 18.The concrete device of this isolation module is diode, and the anode of diode connects charging mould Block 15, the negative terminal connecting valve module 18 of diode, when charging module 15 switches, diode can play the work of isolation electric current With extending the life-span of switch.
Further, described dc bus includes the first dc bus 12 and the second dc bus 13, and described first is straight Stream bus 12 and the second dc bus 13 all include dc bus L+ and dc bus L-, and described switch module 18 includes first Son switch, the second son switch, the 3rd son switch and the 4th son switch, two output ends of described charging module 15 pass through first respectively Son switch and the second son switch correspond on the dc bus L+ and dc bus L- accessing the first dc bus 12, described charging mould Two output ends of block 15 are also passed through the 3rd son respectively and are switched and the corresponding direct current mother accessing the second dc bus 13 of the 4th son switch On line L+ and dc bus L-.
Further, described first son switch, the second son switch, the 3rd son switch and the 4th son switch are breaker and open Pass, relay switch, Mosfet switch or IGBT switch in any one.
Further, the direct current output metering multifunctional meter 14 electrically connecting with dc bus, described direct current output are also included The quantity of metering multifunctional meter 14 is adapted with the quantity of direct current output panel switches QF2.Also include AC measurment multifunctional meter 11 and exchange input switch 16.
In sum, the charging system for electric automobile that the present invention provides, is accessed by switch module using by charging module On two groups or more dc bus, and configure a switch control module, this switch control module can be according to electronic Corresponding sub- switch in the quantity of automobile and charge data ON switch module, and also it is equipped with communication mould in DC output end The data of the electric automobile of collection and its charge data can be delivered to switch control module, by switch module, switch by block Control module, communication module and two groups or more dc bus, are capable of to two or more electronic Automobile charges.In addition, the son switch in switch module can control charging module to access the quantity of dc bus, this sub- switch Type is conventional electronic switch;The charging module that the present invention can realize configuring minimum number fills to multiple stage electric automobile simultaneously Electricity, make full use of charging module to operate at full capacity, improves the utilization rate of charging module, and charge efficiency is high, advantageously reduces The investment of system.
Refering to Fig. 5, a kind of charging method of charging system for electric automobile, including step:
S01, the two or more electric motor car charging ends of distribution;
S02, the charge data detecting the charging quantity of electric automobile of charging end and gathering each electric automobile, wherein, Described charge data is charging voltage and the charging current of electric automobile;
S03, charge data is sent to switch control module;
S04, connect/switch corresponding charging module according to the charge data of each electric automobile, make on dc bus simultaneously Connecing the two or more charging modules being adapted with described charge data is charging electric vehicle.
The charging of single electric automobile only need to connect charging module corresponding with charge data, and to two or more Charging electric vehicle can be related to the switching problem of charging module.
Further, the step switching charging module in described step S04 includes:
S41, turn down the DC bus-bar voltage that to be switched charging module is located;
S42, judge DC bus-bar voltage that to be switched charging module is located whether more than DC bus-bar voltage to be charged Size, if it is not, then execution step S43, if so, then execution step S41;
The connection of S43, the to be switched charging module of disconnection and dc bus;
S44, will band switching charging module access dc bus to be charged on.
Disconnected by the zero current that above-mentioned steps are capable of two switches, zero-voltage zero-current adhesive takes over seamlessly.
Further, also include step S05 after described step S04, count the charge capacity of each electric automobile.To filling The statistics of power consumption, conveniently according to charge capacity come charging.
In sum, the charging method of the charging system for electric automobile that the present invention provides, adopts in charging end to electronic vapour The charging quantity of car and charge data are acquired, and the son connecting corresponding switch module after charge data is parsed is opened Close, make on dc bus and connect the two or more charging modules being adapted with described charge data to fill for electric automobile Electricity, can show multiple stage electric automobile and charge simultaneously, make full use of charging module to operate at full capacity, improve the profit of charging module With rate, charge efficiency height, advantageously reduce the investment of system.In addition, also including counting the step lighted that charges, it is easy to charging.
Refering to Fig. 6 and Fig. 7, in a specific example it is assumed that a machine two charging system output dc bus one be parallel with 1~ M common M wired in parallel work, output dc bus two is parallel with the work of M1~N common (N-M) individual wired in parallel;First need dynamic Charging module M is by dc bus Vbus1 to dc bus Vbus2 for switching;
Step1:Turn down the voltage of charging module M dc bus Vbus1;
Step2:Its voltage VR is waited to be dropped below equal to Vbus2 by Vbus1;
Step3:Disconnect K1 switch, make charging module M depart from bus Vbus1 connection, due to have output diode every From the zero current realizing switch K1 disconnects, and improves its service life;
Step4:Adhesive K2 switchs, and makes charging module M be parallel to the connection work of dc bus Vbus2, due to there being output The isolation of diode, realizes no-voltage, the zero current adhesive of switch K2, improves its service life.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (8)

1. a kind of charging system for electric automobile, including exchange total input panel switches, dc bus, direct current output panel switches and Multiple charging modules are it is characterised in that also include communication module, switch control module and multiple switch module, described switch Control module is electrically connected with multiple switch module respectively;The quantity of described dc bus is at least two groups, and described charging module leads to Cross switch module to access on two groups of dc bus;The described quantity of direct current output panel switches is adapted to the quantity of dc bus; Described communication module one end is connected with cell management system of electric automobile to be charged, and the other end is electrically connected with switch control module Connect;
Described communication module, for being converted to control information transmission by the charging quantity of the electric automobile after collection and charge data To switch control module, wherein, described charge data is the charging current and charging voltage needed for each electric automobile;
Described switch module, for turning on/off charging module and dc bus;
Described switch control module, turns on/off corresponding switch module for the charge data according to each electric automobile Son switch, making on dc bus and connecing the two or more charging modules being adapted with described charge data is electronic vapour Car charges.
2. charging system for electric automobile according to claim 1 is it is characterised in that also include isolation module, described isolation One end of module is connected with charging module, and the other end of isolation module is electrically connected with switch module.
3. charging system for electric automobile according to claim 1 is it is characterised in that described dc bus includes the first direct current Bus and the second dc bus, described first dc bus and the second dc bus all include dc bus L+ and direct current is female Line L-, described switch module includes the first son switch, the second son switch, the 3rd son switch and the 4th son switch, described charging mould Two output ends of block pass through respectively the first son switch and the corresponding dc bus L+ accessing the first dc bus of the second son switch and On dc bus L-, two output ends of described charging module also pass through the 3rd son switch and the corresponding access of the 4th son switch the respectively On the dc bus L+ of two dc bus and dc bus L-.
4. charging system for electric automobile according to claim 3 is it is characterised in that described first son switch, the second son are opened Close, the 3rd son switch and the 4th son switch are in killer switch, relay switch, Mosfet switch or IGBT switch arbitrarily A kind of.
5. charging system for electric automobile according to claim 1 it is characterised in that also include is electrically connected with dc bus Direct current output measures multifunctional meter, and described direct current output measures the quantity of multifunctional meter and the quantity phase of direct current output panel switches Adaptation.
6. the charging system for electric automobile described in a kind of any one according to claim 1 to 5 charging method it is characterised in that Including step:
S01, the two or more electric motor car charging ends of distribution;
S02, the charge data detecting the charging quantity of electric automobile of charging end and gathering each electric automobile, wherein, described Charge data is charging voltage and the charging current of electric automobile;
S03, charge data is sent to switch control module;
S04, connect/switch corresponding charging module according to the charge data of each electric automobile, make on dc bus and connect with Two or more charging modules that described charge data is adapted are charging electric vehicle;Wherein said dc bus Quantity is at least two groups, and described charging module is accessed on two groups of dc bus by switch module.
7. the charging method of charging system for electric automobile according to claim 6 is it is characterised in that in described step S04 The step of switching charging module includes:
S41, turn down the DC bus-bar voltage that to be switched charging module is located;
S42, judge DC bus-bar voltage that to be switched charging module is located whether more than the size of DC bus-bar voltage to be charged, If it is not, then execution step S43, if so, then execution step S41;
The connection of S43, the to be switched charging module of disconnection and dc bus;
S44, will band switching charging module access dc bus to be charged on.
8. charging system for electric automobile according to claim 6 charging method it is characterised in that described step S04 it Also include step S05 afterwards, count the charge capacity of each electric automobile.
CN201410323966.9A 2014-07-08 2014-07-08 Electric vehicle charging system and charging method Active CN104065148B (en)

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CN104734119A (en) * 2015-02-26 2015-06-24 张家港市华为电子有限公司 Self-protection method of battery charger system when parallel operation charging is realized through CAN communication
CN104795877B (en) * 2015-05-08 2017-07-18 山东鲁能智能技术有限公司 Electric automobile integration DC charging motor, system and method
CN105207302A (en) * 2015-10-19 2015-12-30 西安特锐德智能充电科技有限公司 Flexible charging method and charger of electric car
CN205970916U (en) 2016-08-29 2017-02-22 上海蔚来汽车有限公司 Modularization storage battery car
CN106585412A (en) * 2016-12-22 2017-04-26 深圳市沃特玛电池有限公司 Charging system and method
CN106856341A (en) * 2016-12-26 2017-06-16 浙江万马新能源有限公司 A kind of charging electric vehicle control method of low equipment loss

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