CN106602681A - Charging system and control method thereof - Google Patents

Charging system and control method thereof Download PDF

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Publication number
CN106602681A
CN106602681A CN201611048241.9A CN201611048241A CN106602681A CN 106602681 A CN106602681 A CN 106602681A CN 201611048241 A CN201611048241 A CN 201611048241A CN 106602681 A CN106602681 A CN 106602681A
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CN
China
Prior art keywords
energy storage
storage device
charger
changers
charging system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611048241.9A
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Chinese (zh)
Inventor
李丹东
付亚涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Pride New Energy Battery Technology Co Ltd
Original Assignee
Changzhou Pride New Energy Battery Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Pride New Energy Battery Technology Co Ltd filed Critical Changzhou Pride New Energy Battery Technology Co Ltd
Priority to CN201611048241.9A priority Critical patent/CN106602681A/en
Publication of CN106602681A publication Critical patent/CN106602681A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0021Monitoring or indicating circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0027Stations for charging mobile units, e.g. of electric vehicles, of mobile telephones
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices

Abstract

The invention discloses a charging system and a control method thereof. The charging system comprises an AC/DC converter, at least a charging device, and an energy storage device. The AC/DC converter comprises an input end and an output end, and the input end of the AC/DC converter is used to receive alternating current, and the output end is connected with a direct current bus, and is used to provide direct current output voltage. The charging device is connected with the direct current bus, and is used to charge an external device. The energy storage device is connected with the direct current bus, and is used to store electric energy in a charging state, and is used to provide the electric energy in a power supply state. The AC/DC converter is used to control the switching of the energy storage device between the charging state and the power supply state. The charging system is used to realize power distribution between the energy storage device and the charging device, is used to simplify the control circuit and the control method of the energy storage device, and is used to reduce hardware costs.

Description

Charging system and its control method
Technical field
The present embodiments relate to technical field of power systems, more particularly to charging system and its control method.
Background technology
With the fast development of the similar electrical equipment such as electric automobile, the charging pile for providing electric energy for which also compel therewith by demand Cut.To meet the charge requirement of the similar electrical equipment such as electric automobile, need to build substantial amounts of high-power charging pile.
But the construction of charging pile is limited by urban construction and electrical network, on the one hand high-power charging pile causes electrical network Peak power is increased considerably, and needs the use of the transformation of power network line, another aspect charging pile interruption to cause to rush electrical network Hit, reduce the electrical network quality of power supply.Under existing urban construction and the restriction of electrical network, it is fully to meet the use need to charging pile Ask, there has been proposed some methods for being combined with charger using energy storage device.Deposited in electricity consumption low peak period using energy storage device Energy storage capacity, peak times of power consumption release energy, and the peak power for reducing electrical network also slow down the use of charging pile interruption to electrical network Impact.Therefore, it can, in the case where power network line significantly need not be transformed, realize the construction of charging pile.
In the prior art, the two-way DC/DC changers between energy storage device and dc bus not only increase cost, The control process to energy storage device discharge and recharge can be caused excessively complicated.
The content of the invention
In view of this, at least one purpose of the embodiment of the present invention is the structure by simplifying charging system, reduces hard Part cost, simplifies the control process to energy storage device discharge and recharge.
According to an aspect of the present invention, there is provided a kind of charging system, including:AC/DC changers, including input and output End, the input of the AC/DC changers receive alternating current, and outfan is connected with dc bus, to provide VD; At least one charger, is connected with the dc bus, for charging for external equipment;And energy storage device, with the direct current Bus connects, for storing electric energy in the charge state and providing electric energy in power supply state, wherein, the AC/DC changers control Make the switching of the charged state and power supply state of the energy storage device.
Preferably, the AC/DC changers control the charging shape of the energy storage device by changing VD State and power supply state.
Preferably, the peak power output of the AC/DC changers be set smaller than equal to electrical network available horsepower and itself Rated power in any one, the electrical network available horsepower is determined according to the distribution capacity and daily load difference of electrical network.
Preferably, the peak power output in the AC/DC changers is more than the charging work(of at least one charger During rate sum, the AC/DC changers are powered at least one charger and are charged to the energy storage device, described When the peak power output of AC/DC changers is less than or equal to the charge power sum of at least one charger, the AC/DC Changer and the energy storage device are powered at least one charger together.
Preferably, the charging system carries out the dynamic power distribution of at least one charger according to power supply capacity, The power supply capacity is the maximum output of peak power output and the energy storage device in power supply state of the AC/DC changers Power sum.
Preferably, the charging system is only to charger distribution work(in running order at least one charger Rate.
Preferably, the power supply capacity less than at least one charger charge power sum when, it is described at least The charge power of one charger is restricted respectively.
Preferably, in the case of being restricted, described in the charging system mean allocation, at least one charger fills Electrical power.
Preferably, the energy storage device includes:Energy storage management module, for performing at least one in following action:Prison Survey energy storage state, charging and discharging state and the state of insulation of the energy storage device;Control electricity electric on the energy storage device, lower;Diagnosis The failure of the energy storage device;And via communication bus and the AC/DC changers, at least one charger and be connected One or more in the remote terminal of the communication bus are communicated.
Preferably, the charging system also includes:Pre-charge circuit, is connected to the dc bus and the energy storage device Between, for being pre-charged in energy storage device power up.
Preferably, the charging system also includes:Remote terminal, via communication bus and the AC/DC changers, described At least one charger and energy storage device connection, for the communication between realization and PERCOM peripheral communication, the outside Communicate for monitoring the charging system.
Preferably, the communication bus includes one below:RS485 buses, CAN and industry ethernet.
Preferably, the energy storage device includes at least one of:Lithium battery, lead-acid battery and super capacitor.
Preferably, at least one charger is respectively selected from any one in following charger:DC charging motor and AC charging machine.
Preferably, the external equipment is included selected from electric automobile, electric bicycle, Segway Human Transporter, electric tool, pen Remember at least one in this computer, mobile phone.
According to a further aspect in the invention, there is provided a kind of control method for charging system, including:By convert alternating current For unidirectional current;Using the unidirectional current, electric energy is stored in energy storage device;Using the unidirectional current and the electricity of the energy storage device At least one energy charges for external equipment;Wherein, the energy storage device stores electric energy in the charge state, carries under power supply state For electric energy, the galvanic output voltage is used for the switching of the charged state and power supply state for controlling the energy storage device.
Preferably, adopt AC/DC changers by convert alternating current for unidirectional current, and at least one charger is adopted for institute External equipment charging is stated, is more than the charging work(of at least one charger in the peak power output of the AC/DC changers During rate sum, the AC/DC changers are powered at least one charger and are charged to the energy storage device, described When the peak power output of AC/DC changers is less than or equal to the charge power sum of at least one charger, the AC/DC Changer and the energy storage device are powered at least one charger together.
In the charging system of the embodiment of the present invention, using AC/DC convertor controls energy storage devices charged state and put The switching of electricity condition.The charging system realizes the power distribution between energy storage device and charger.The charging system can be effective The peak load of charging station is reduced, electrical network daily load difference is made full use of, in the case of than relatively limited distribution capacity, is sent out Wave the load-bearing capacity of charging system.Further, in the charging system, in without the need for just can be real using two-way DC/DC changers Existing bidirectional electric energy transmission between energy storage device and dc bus, therefore the control circuit and controlling party of energy storage device can be simplified Method, and reduce hardware cost.
In a preferred embodiment, charging system is monitored using remote terminal, is easy to note abnormalities in time and monitor correlation Numerical value ensures the normal operation of charging system.The peak power output of AC/DC changers protects electrical network according to Multiple factors determination It is not hit.By the output power limit of the charger below the power supply capacity of charging system, even if so as to supply in electric energy In the case of answering deficiency, it is also possible to mean allocation charge power, so as to maintain good Consumer's Experience.
Description of the drawings
By description referring to the drawings to the embodiment of the present invention, the above-mentioned and other purposes of the present invention, feature and Advantage will be apparent from, in the accompanying drawings:
Fig. 1 illustrates the schematic block diagram of charging system according to a first embodiment of the present invention;
The flow chart that Fig. 2 illustrates the control method of charging system according to a second embodiment of the present invention;
Fig. 3 illustrates the charged state and discharge condition of the energy storage device in the charging system shown in Fig. 1 over time;
Fig. 4 illustrates the power distribution schematic diagram in the control method shown in Fig. 2.
Specific embodiment
Various embodiments of the present invention are more fully described hereinafter with reference to accompanying drawing.In various figures, identical element Represented using same or similar reference.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 illustrates the schematic block diagram of charging system according to a first embodiment of the present invention.Charging system 100 includes:AC/ DC changers 101, at least one charger 102, energy storage device 103, remote terminal 104, chopper 105 and pre-charge circuit 106.The charging system 100 is used for example as charging station, for charging for following at least one external equipment:It is electric automobile, electronic Bicycle, Segway Human Transporter, electric tool, notebook computer, mobile phone.
AC/DC changers 101 are conveyed to dc bus for the alternating current from the electrical network is converted to unidirectional current. The input of AC/DC changers 101 receives alternating current, and it can also be industrial power supply system that the electrical network can be folk power supply system System, outfan are connected to provide DC bus-bar voltage with dc bus.The VD value of AC/DC changers 101 can It is adjusted in predetermined span, so as to control the discharge and recharge of energy storage device 103.In certain embodiments, AC/DC conversion Device 101 can be according to the VD value of default discharge and recharge strategy adjustment itself, so as to control filling for energy storage device 103 Charge power under switching between electricity condition and power supply state, and control charged state.The maximum of AC/DC changers 101 Output is could be arranged to less than or equal to any one in electrical network available horsepower and the rated power of itself, and the electrical network can use Power is determined according to the distribution capacity and daily load difference of electrical network.It is more than in the peak power output of AC/DC changers 101 During the charge power sum of at least one charger 102, AC/DC changers 101 power at least one charger 102 and to Energy storage device 103 charges, and is less than or equal to the charging of at least one charger 102 in the peak power output of AC/DC changers 101 During power sum, AC/DC changers 101 and energy storage device 103 are powered at least one charger 102 together.
At least one charger 102 charges for respectively external equipment.Charger 102 is connected with the dc bus, Can be DC charging motor can also be AC charging machine, when charger 102 be AC charging machine when, dc bus can be carried For DC conversion be alternating current.In charging system 100, can there is DC charging motor and AC charging machine simultaneously with full Sufficient different demands.In some optional embodiments, charger 102 can have metering and billing function.Further, charger 102 can also have charging function, can support to swipe the card, pay in cash.External equipment can be installed on electric automobile, electric sliding Wooden handcart, electric bicycle, naval vessel, aircraft and/or any other vehicles, it is also possible to independently of the above-mentioned vehicles, example Such as, can be electric tool, notebook computer or mobile phone.In some optional embodiments, charger 102 has different type Charging port, with meet to different types of external equipment provide electric energy needs.Charging system 100 enters according to power supply capacity The dynamic power distribution of at least one charger 102 of row, peak power output of the power supply capacity for AC/DC changers 101 With energy storage device 103 power supply state peak power output sum.In certain embodiments, charging system 100 is only at least 102 distribution power of charger in running order in one charger 102.Charge less than at least one in the power supply capacity During the charge power sum of machine 102, the charge power of at least one charger 102 is restricted respectively.In the feelings being restricted Under shape, the charge power of 100 mean allocation of charging system, at least one charger 102.
Energy storage device 103 is used to store electric energy in the charge state and provides electric energy to charger 102 in power supply state.Storage Energy device 103 is connected with the dc bus, and the energy-storage travelling wave tube of energy storage device 103 can be lithium battery, can be lead-acid battery, Can also be super capacitor.In some optional embodiments, the energy-storage travelling wave tube of energy storage device 103 can be lithium battery, plumbic acid The series and parallel combination of battery and super capacitor.In a preferred embodiment, energy storage device 103 can arrange more than one, be used for Lift the energy storage capacity of charging system 100, it can also be used to ensure the sufficient supply of the electric energy after grid cut-off, can also be each other Spare part, enables other energy storage devices 103 in time when exception occurs in an energy storage device 103.
Energy storage device 103 can include energy storage management module 1031, for monitoring the energy storage state of energy storage device 103, filling Discharge condition and state of insulation, electric, lower electricity on control energy storage device 103, and according to discharge and recharge strategy adjustment AC/DC changer 101 VD value.Energy storage management module 1031 can be also used for diagnose energy storage device 103 failure, and via Communication bus and AC/DC changers 101, at least one charger 102 and it is connected in the remote terminal 104 of the communication bus One or more communicated.In some optional embodiments, energy storage management module 1031 can be with according to energy storage device State and discharge and recharge strategy adjustment AC/DC changer 101 VD value.The energy storage state includes energy storage device The information about power stored in 103, the charging and discharging state includes whether energy storage device 103 charges, charge-discharge electric power and Output voltage, the state of insulation are included without abnormal conditions such as electric leakages.Energy storage management module 1031 passes through communication bus and AC/ DC changers 101 connect, and in certain embodiments, energy storage management module 1031 can be by communication bus to AC/DC changers 101 send instruction, adjust the VD value of AC/DC changers 101, so control energy storage device 103 discharge and recharge and Charge power.The communication bus can be RS485 buses, can be CAN, or industry ethernet.
Remote terminal 104 passes through communication bus, with AC/DC changers 101, at least one charger 102 and energy storage device 103 connect respectively.The communication bus can be RS485 buses, can be CAN, or industry ethernet.Specifically Ground, remote terminal 104 can gather the letter of AC/DC changers 101, charger 102 and energy storage device 103 by communication bus Breath, notes abnormalities and monitors the normal operation that correlation values ensure charging system 100 in time.Can be with for AC/DC changers 101 Collect output voltage, output current, abnormality and line voltage of AC/DC changers 101 etc..For charger 102 can collect the output of charger 102, output electricity and abnormal conditions etc.;Can be with for energy storage device 103 Collect electricity condition up and down, energy storage state, charging and discharging state and the state of insulation of energy storage device 103.Preferably implement at some In example, remote terminal 104 can also pass through communication bus and be placed in AC/DC changers 101, charger 102 and energy storage device 103 In control module connection, send instructions under being used for, control AC/DC changers 101, charger 102 and energy storage device 103.Remotely Terminal 104 can be used for realization and the communication between AC/DC changers 101, at least one charger 102 and energy storage device 103, Can be also used for realizing PERCOM peripheral communication, charging system 100 is monitored using PERCOM peripheral communication.For example, remote terminal 104 will can charge The information of system 100 passes to cloud server, other third-party server or client by PERCOM peripheral communication.
Chopper 105 and pre-charge circuit 106 are connected between dc bus and energy storage device 103.Chopper 105 is used for The cut-out connection therebetween when energy storage device 103 breaks down.Pre-charge circuit 106 is in energy storage device 103 It is pre-charged in electric process.
In this embodiment, describing charging system includes AC/DC changers, at least one charger, energy storage device, long-range Terminal, chopper and pre-charge circuit.However, the remote terminal, chopper and pre-charge circuit in the charging system not must Need.The charging system can not include remote terminal, but realize local control using internal control module.The chopper and Pre-charge circuit is the add-on module for energy storage device, and according to the characteristic of energy storage device, the charging system can not include disconnected Road device and pre-charge circuit.Energy storage management module in energy storage device nor required, even if no energy storage management module The purpose of the present invention can be realized using AC/DC changers.
According to the charging system of the embodiment, using the charged state and electric discharge shape of AC/DC convertor controls energy storage devices The switching of state.The charging system realizes the power distribution between energy storage device and charger.The charging system effectively can be reduced The peak load of charging station, makes full use of electrical network daily load difference, and in the case of than relatively limited distribution capacity, performance is filled The load-bearing capacity of electric system.Further, in the charging system, due to without the need for just being realized using two-way DC/DC changers Bidirectional electric energy transmission between energy storage device and dc bus, therefore the control circuit and controlling party of energy storage device can be simplified Method, and reduce hardware cost.
The flow chart that Fig. 2 illustrates the control method of charging system according to a second embodiment of the present invention.
Methods described includes following multiple steps.
In step S101, charging system judges electrical network whether power-off, execution step S102 if grid cut-off, otherwise Execution step S103.
In step s 102, energy storage device provides electric energy for charger.
In the case of grid cut-off, energy storage device can independently be charger and provide electric energy.In certain embodiments, The AC/DC changers and charger of energy storage device and AC connection electrical network is connected by communication bus, when grid cut-off, AC/DC changers carry out information exchange by communication bus and energy storage device, after energy storage device receives the information of grid cut-off Interacted by communication bus with charger, determine the output that each charger needs, adjust the output of itself accordingly Power, it is ensured that power supply.
In step s 103, charging system judges the size of the charge power sum of charger, if AC/DC changers Peak power output is more than the charge power sum of charger, then execution step S104;If the maximum output of AC/DC changers Power is less than or equal to the charge power sum of charger, then execution step S105.
The peak power output of the AC/DC changers can be according to the rated power of AC/DC changers, electrical network round the clock Multiple factors in the power supply capacity of load difference, the distribution capacity of charging system and charging workload demand and energy storage device are true It is fixed.The purpose for doing so is to ensure power that charging system obtains from electrical network in the available power range of electrical network, it is to avoid charging System makes a very bad impression to electrical network.
In step S104, AC/DC changers provide electric energy to charger and energy storage device.
For example, the discharge and recharge and storage of energy storage device described in the output voltage control of regulation AC/DC changers can be passed through The charge power of energy device.In certain embodiments, when the output voltage of AC/DC changers is higher than energy storage device, AC/DC becomes Parallel operation just can provide electric energy to energy storage device, and energy storage device is charged.When the load of electrical network is less, electric energy is deposited Storage in energy storage device, when riseing so as to the load of electrical network or when charge requirement increases sharply, meets charger and carries to external equipment For the demand of electric energy.In certain embodiments, energy storage device includes energy storage management module, and the energy storage management module is by communication Bus is connected with the AC/DC changers, energy storage management module can according to the energy storage state of discharge and recharge strategy and energy storage device, The discharge and recharge of the control energy storage device such as charging and discharging state and charge power, or by the interactive controlling with AC/DC changers The discharge and recharge of energy storage device and charge power.
In step S105, AC/DC changers and energy storage device provide electric energy to charger.
When the peak power output of AC/DC changers is less than or equal to the charge power sum of charger, AC/DC changers Peak power output cannot meet the needs of charger charge power, if now lifting the maximum of AC/DC changers Output will increase the load of electrical network, and electrical network is impacted, in this case, AC/DC changers and energy storage device Electric energy is provided to charger, to ensure the charge power of charger, while protecting electrical network not to be hit, it is ensured that the electric energy matter of electrical network Amount.In certain embodiments, the charge power in the charger be limited to the peak power output of the AC/DC changers with In the case of the peak power output sum of the energy storage device, to the charger average mark that electric energy is provided to external equipment per platform With power upper limit, the charge power of the charger is limited in below the power upper limit.This requires each charger Charge power is no more than the power upper limit, to ensure in the case of electric energy insufficient supply, the charging of each charger Power can access a certain degree of protection, it is to avoid power distribution is uneven to affect Consumer's Experience.This control function can be led to The control module for overcharging the information exchange between motor and AC/DC changers and being placed in charger is realized.
In execution step S102, step S104, step S105, need periodically or periodically start to sentence from step S101 The condition that disconnected step is performed, when the execution condition of step S102, step S104, step S105 changes, filling according to Fig. 2 The flow chart of the control method of electric system performs the step corresponding to corresponding conditionses.
In some optional embodiments, by with the AC/DC changers, at least one charger and the storage The remote terminal of energy device connection monitors the charging system.The remote terminal is used to monitor charging system.AC/DC is converted Device, at least one charger and energy storage device are connected with remote terminal by communication bus.The communication bus can be RS485 Bus, can be CAN, or industry ethernet.Specifically, remote terminal can gather AC/ by communication bus The information of DC changers, charger and energy storage device, notes abnormalities or monitors correlation values in time and just ensureing charging system Often operate.In some preferred embodiments, remote terminal can also pass through communication bus and be placed in AC/DC changers, charges Control module connection in machine and energy storage device, sends instructions under being used for, control AC/DC changers, charger and energy storage device.
Fig. 3 illustrates the charged state and discharge condition of the energy storage device in the charging system shown in Fig. 1 over time. As described above, the charging system includes energy storage device, using energy storage device in electricity consumption low peak period storage energy, in peak times of power consumption Release energy, so as to the peak power for reducing electrical network also slow down impact of the use of charging device interruption to electrical network, while Also reduce electric cost.
Fig. 4 illustrates the power distribution schematic diagram in the control method shown in Fig. 2.The control method of the charging system includes The dynamic power distribution of machine is charged according to power supply capacity.Herein, peak power output of the power supply capacity for AC/DC changers With energy storage device power supply state peak power output sum.As shown in figure 4, the control method is only in running order Charger distribution power, also, in charge power sum of the power supply capacity less than charger, the charge power of each charger It is restricted respectively.For example, in the case of being restricted, the charge power of mean allocation charger.Even if supplying in electric energy In the case of deficiency, the control method can also mean allocation charge power, so as to maintain good Consumer's Experience.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet It is only described specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation These embodiments are chosen and specifically described to book, is for the principle and practical application of preferably explaining the present invention, so that affiliated Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The protection model of the present invention Enclose the scope that should be defined by the claims in the present invention to be defined.

Claims (17)

1. a kind of charging system, including:
AC/DC changers, including input and outfan, the input of the AC/DC changers receive alternating current, outfan with Dc bus connects, to provide VD;
At least one charger, is connected with the dc bus, for charging for external equipment;And
Energy storage device, is connected with the dc bus, for storing electric energy in the charge state and providing electric energy in power supply state,
Wherein, the charged state of energy storage device and the switching of power supply state described in the AC/DC convertor controls.
2. charging system according to claim 1, wherein, the AC/DC changers by change VD come Control the charged state and power supply state of the energy storage device.
3. charging system according to claim 1, wherein, the peak power output of the AC/DC changers is set to little Any one in equal to electrical network available horsepower and the rated power of itself, the electrical network available horsepower is according to electrical network with electric capacity Measure with daily load difference to determine.
4. charging system according to claim 3, wherein, it is more than institute in the peak power output of the AC/DC changers When stating the charge power sum of at least one charger, the AC/DC changers power at least one charger and Charge to the energy storage device,
The charge power sum of at least one charger is less than or equal in the peak power output of the AC/DC changers When, the AC/DC changers and the energy storage device are powered at least one charger together.
5. charging system according to claim 1, wherein, the charging system is at least one according to power supply capacity is carried out The dynamic power distribution of individual charger, the power supply capacity is the peak power output of the AC/DC changers and the energy storage Peak power output sum of the device in power supply state.
6. charging system according to claim 5, wherein, the charging system is located only at least one charger In the charger distribution power of working condition.
7. charging system according to claim 5, wherein, in the power supply capacity less than at least one charger During charge power sum, the charge power of at least one charger is restricted respectively.
8. charging system according to claim 7, wherein, in the case of being restricted, the charging system average mark Charge power with least one charger.
9. charging system according to claim 1, wherein, the energy storage device includes:
Energy storage management module, for performing at least one in following action:
Monitor energy storage state, charging and discharging state and the state of insulation of the energy storage device;
Control electricity electric on the energy storage device, lower;
Diagnose the failure of the energy storage device;And
Via communication bus and the AC/DC changers, at least one charger and it is connected to the remote of the communication bus One or more in journey terminal are communicated.
10. charging system according to claim 1, also includes:
Pre-charge circuit, is connected between the dc bus and the energy storage device, in energy storage device power up Precharge.
11. charging systems according to claim 1, also include:
Remote terminal, is connected with the AC/DC changers, at least one charger and the energy storage device via communication bus Connect, for the communication between realization and PERCOM peripheral communication, the PERCOM peripheral communication is used to monitor the charging system.
12. charging systems according to claim 11, wherein, the communication bus includes one below:RS485 buses, CAN and industry ethernet.
13. charging systems according to claim 1, wherein, the energy storage device includes at least one of:Lithium battery, Lead-acid battery and super capacitor.
14. charging systems according to claim 1, wherein, at least one charger is respectively selected from following charging Any one in machine:DC charging motor and AC charging machine.
15. charging systems according to any one of claim 1 to 14, wherein, the external equipment is included selected from electronic At least one in automobile, electric bicycle, Segway Human Transporter, electric tool, notebook computer, mobile phone.
A kind of 16. control methods for charging system, including:
It is unidirectional current by convert alternating current;
Using the unidirectional current, electric energy is stored in energy storage device;
Adopt at least one electric energy of the unidirectional current and the energy storage device and charge for external equipment;
Wherein, the energy storage device stores electric energy in the charge state, and electric energy is provided under power supply state, described galvanic defeated Go out voltage for controlling the switching of the charged state and power supply state of the energy storage device.
17. control methods according to claim 16, wherein, adopt AC/DC changers by convert alternating current for unidirectional current, And adopt at least one charger to charge for the external equipment,
When the peak power output of the AC/DC changers is more than the charge power sum of at least one charger, institute State AC/DC changers to power at least one charger and charge to the energy storage device,
The charge power sum of at least one charger is less than or equal in the peak power output of the AC/DC changers When, the AC/DC changers and the energy storage device are powered at least one charger together.
CN201611048241.9A 2016-11-22 2016-11-22 Charging system and control method thereof Pending CN106602681A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108321864A (en) * 2018-01-12 2018-07-24 许继电源有限公司 Multiterminal Complementary input structure exports the charging system and control method of energy compatibility distribution
CN109347140A (en) * 2018-10-12 2019-02-15 珠海格力电器股份有限公司 PV air-conditioner and its control method and device, DC grid and readable storage medium storing program for executing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108321864A (en) * 2018-01-12 2018-07-24 许继电源有限公司 Multiterminal Complementary input structure exports the charging system and control method of energy compatibility distribution
CN109347140A (en) * 2018-10-12 2019-02-15 珠海格力电器股份有限公司 PV air-conditioner and its control method and device, DC grid and readable storage medium storing program for executing

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