CN202906510U - Electric vehicle charging pile - Google Patents

Electric vehicle charging pile Download PDF

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Publication number
CN202906510U
CN202906510U CN 201220497488 CN201220497488U CN202906510U CN 202906510 U CN202906510 U CN 202906510U CN 201220497488 CN201220497488 CN 201220497488 CN 201220497488 U CN201220497488 U CN 201220497488U CN 202906510 U CN202906510 U CN 202906510U
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energy
module
charging
storage
charging pile
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CN 201220497488
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李武峰
李晓强
严辉
李凯旋
李索宇
杨天林
罗小英
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State Grid Corp of China SGCC
Beijing State Grid Purui UHV Transmission Technology Co Ltd
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State Grid Corp of China SGCC
Beijing State Grid Purui UHV Transmission Technology Co Ltd
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Abstract

The utility model provides an electric vehicle charging pile. The charging pile comprises a control unit, an energy storage module, a communication module, an energy scheduling module and an output interface. The control unit is in control connection with the communication unit, the energy scheduling module and the output interface. The energy storage module and the energy scheduling module are interconnected. The energy storage module stores electric energy. The communication module communicates with a distribution network system, and receives instructions of the distribution network system. The instructions of the distribution network system comprise the power grid load condition. The energy scheduling module confirms an electric energy supply source of the charging pile according to the power grid load condition, the energy storage module condition, and the user need. The output interface confirms the electric energy supply source according to the energy scheduling module, and outputs the power supply provided by the power grid or the power grid and the energy storage module to a user electric vehicle.

Description

A kind of electric automobile charging pile
Technical field
The utility model relates to electric vehicle charging and changes electro-technical field, is specifically related to a kind of electric automobile charging pile.
Background technology
Electric automobile, particularly pure electric automobile take electric power as the energy, have low, the energy service efficiency advantages of higher of discharging, are the main selections of replacing fuel oil automobile.Under the situation that global energy and environmental problem become increasingly conspicuous, Development of EV becomes breaks away from the important channel that petroleum resources relied on, realized energy-saving and emission-reduction, alleviate energy environment issues.One of core technology on the electric automobile is exactly energy reserves and feed system, and the use of storage battery and quick-replaceable technology and electric vehicle charging electrical changing station technology become the key technology of electric vehicle industrialization development.
Fill some problems that the service network infrastructure construction such as electrical changing station occurs in the prior art, construction restriction degree to whole operation service network is increasing, the problem that prior art exists comprises: one, urban land is nervous, and the construction of electric vehicle charging electrical changing station is faced with how as far as possible dwindles floor space, improves the problem of effectively utilizing area, optimizing the planning of electric automobile service network; Two, the construction of electric vehicle charging electrical changing station need be gone through premenarcheal Site Selection, expropriation of land declaration, and the foundation construction thing in mid-term is built, and in the three basic stages such as the rigging up and debugging in later stage, the whole construction period is consuming time longer; Three, electric automobile power battery is limited by the running environment factor, and build at present to fill electrical changing station battery charging storage environment all not ideal enough, also not yet accomplish good constant temperature, low humidity, ventilation and dust-proof effect, electrokinetic cell is in the middle of the comparatively open environment for a long time, be subjected to easily Seasonal and Vehicle Driving Cycle to damage the impact of clean environment in the station, cause the battery status rate of good lower, useful life is shorter, and efficiency for charge-discharge is unstable.
The utility model content
A kind of electric automobile charging pile that the utility model provides, described charging pile comprises control unit, energy-storage module, communication module, energy scheduler module and output interface, the described communication module of described control unit control connection, energy scheduler module and output interface, described energy-storage module and described energy scheduler module interconnect; Described energy-storage module storage of electrical energy; Described communication module is communicated by letter with distribution network system, accepts the instruction of described distribution network system, comprises the network load situation in the instruction of described distribution network system; Described energy scheduler module is determined the electric energy Source Of Supply of charging pile according to described network load situation, energy-storage module situation and user's request; Described output interface determines that according to described energy scheduler module the electric energy Source Of Supply exports to user's electric automobile with the power supply that electrical network or electrical network and energy-storage module provide.
In the first preferred embodiment that the utility model provides: described communication module comprises the GPRS interface, supports TCP/IP Ethernet interface, CAN bus communication interface, plc communication interface, Zigbee bus communication interface and 3G, 4G wireless communication interface.
In the second preferred embodiment that the utility model provides: described charging pile comprises the charging metering module and the module of swiping the card;
Described charging metering module comprises energy-storage module energy accounting module and charging electric vehicle energy accounting module;
Described energy-storage module energy accounting module is used in the situation of described energy-storage module participation charging work described energy-storage module being carried out energy and carries out charging;
Described charging electric vehicle energy accounting module is used for consuming electric energy according to described energy-storage module energy accounting module and electrical network the energy of user's charging electric vehicle is carried out charging;
The described module of swiping the card is used for when described user's electric automobile starts charging the identity of described user's electric automobile being identified, and the expense of the energy of the charging electric vehicle that after charging finishes described charging metering module is calculated is settled accounts.
In the 3rd preferred embodiment that the utility model provides:, described charging pile comprises human-machine interface module;
Described human-machine interface module comprises display screen, and described display screen is showed charging process voltage, electric weight and electric current to the user, charging interval, the information of charging expense.
In the 4th preferred embodiment that the utility model provides: described charging pile comprises the charging process protection module, and described charging process protection module carries out earth leakage protective and overcurrent protection to described charging pile and described user's electric automobile.
In the 5th preferred embodiment that the utility model provides: described energy-storage module is used for constantly utilizing electrical network or utilizing solar energy to carry out power storage at the electrical network low ebb, comprise discharging and recharging control unit, photovoltaic generating module, PWM module, DC/DC modules A, DC/DC module B and energy-storage units that described energy scheduler module is connected with described control unit, energy-storage units and the DC/DC modules A of discharging and recharging;
Described DC/DC modules A one end connects described photovoltaic generating module, and the other end connects energy-storage units or energy scheduler module;
The described described PWM module of control unit control connection and the described DC/DC module B of discharging and recharging, described DC/DC module B one end connects described PWM module, and the other end connects described energy-storage units.
In the 6th preferred embodiment that the utility model provides: the capacity Q of described dynamic lithium battery is:
Figure BDA00002198490100021
Wherein, U 2lBe electrokinetic cell voltage on the car, t is the charging interval, and h is the charging interval correction value, U 1lFor energy-storage battery SOC is 15% corresponding energy-storage module terminal voltage;
The capacitance C of described super capacitor is:
C = 2 [ ( U 2 - U 1 ) × I × t 1 + ( UI × Δt + U ( I - ΔI ) × Δt + · · · + U ( I - ( n - 1 ) ΔI ) × Δt ) ] U 2
Wherein, U 2Electrokinetic cell terminal voltage when constant-current phase transfers constant-voltage phase in the charging process, U 1Be the power battery charging starting voltage, I is the constant-current phase current value, and Δ I is constant voltage process electric current decline step-length, t 1Be the constant current charge duration, Δ t is the corresponding time of electric current decline Δ I,
Figure BDA00002198490100031
Be the umber of little time period of constant-voltage phase five equilibrium, t is the total duration of constant-voltage phase.
The beneficial effect of a kind of electric automobile charging pile that the utility model provides comprises:
1, the electric automobile charging pile that provides of the utility model, this charging pile comprises energy-storage module and communication module, being controlled by same management platform manages, accept the instruction of distribution network system, when not satisfying the charging electric vehicle demand owing to the electrical network reason, can charge to user's electric automobile with energy-storage module, it is friendly interactive to play an active part in electrical network.
2, charging pile also comprises the energy scheduler module, and this energy scheduler module is determined the electric energy Source Of Supply of charging pile according to network load situation, energy-storage module situation and user's request.
3, energy-storage module can constantly utilize electrical network or utilize solar energy to carry out power storage at the electrical network low ebb.
4, charging pile comprise the charging metering module, the module of swiping the card, human-machine interface module and charging process protection module, the charging metering module is used for the energy of user's charging electric vehicle is carried out charging, the module of swiping the card is used for the identity of user's electric automobile is identified, and the expense to the energy of charging electric vehicle after charging finishes is settled accounts; Human-machine interface module is showed charging process voltage, electric weight and electric current to the user, charging interval, the information such as charging expense; The charging process protection module carries out earth leakage protective and overcurrent protection.
Description of drawings
Fig. 1 is the structural representation of a kind of charging pile provided by the invention;
Fig. 2 is the structural representation of the embodiment of a kind of charging pile provided by the invention;
Fig. 3 is the method flow diagram of the operation method of a kind of charging pile provided by the invention;
Fig. 4 is that energy-storage module provided by the invention is to the flow chart of user's charging electric vehicle;
Fig. 5 is the flow chart of energy-storage module charging provided by the invention.
Embodiment
A kind of electric automobile charging pile that the utility model provides, the structural representation of this charging pile as shown in Figure 1, comprise control unit, energy-storage module, communication module, energy scheduler module and output interface, control unit control connection communication module, energy scheduler module and output interface, energy-storage module and energy scheduler module interconnect.
The energy-storage module storage of electrical energy.
Communication module is communicated by letter with distribution network system, accepts the instruction of this distribution network system, comprises the network load situation in the instruction of this distribution network system.
The energy scheduler module is determined the electric energy Source Of Supply of charging pile according to network load situation, energy-storage module situation and user's request.
The electric energy Source Of Supply that output interface is determined according to the energy scheduler module is exported to electric automobile with the power supply that electrical network or electrical network and energy-storage module provide.
Embodiment one:
The embodiment one that the utility model provides is a kind of embodiment of electric automobile charging pile; the structural representation of the embodiment of this charging pile as shown in Figure 2; comprise control unit, energy-storage module, communication module, energy scheduler module, output interface, charging metering module, the module of swiping the card, human-machine interface module and charging process protection module; control unit control connection communication module, energy scheduler module, output interface, charging metering module, the module of swiping the card, human-machine interface module and charging process protection module, energy-storage module and energy scheduler module interconnect.
Communication module comprises the GPRS interface, supports TCP/IP Ethernet interface, CAN bus communication interface, PLC(Programmable Logic Controller, programmable logic controller (PLC)) communication interface, Zigbee bus communication interface and 3G, 4G wireless communication interface.
The charging metering module comprises energy-storage module energy accounting module and charging electric vehicle energy accounting module, energy-storage module energy accounting module is used under energy-storage module participates in the situation of charging work energy-storage module being carried out energy and carries out charging, and charging electric vehicle energy accounting module is used for consuming electric energy according to energy-storage module energy accounting module and electrical network the energy of charging electric vehicle is carried out charging.
The module of swiping the card is used for when the user starts charging charging user's identity being identified, and the expense of the energy of the charging electric vehicle that after charging finishes the charging metering module is calculated is settled accounts.
Human-machine interface module comprises display screen, and this display screen is showed charging process voltage, electric weight and electric current to the user, charging interval, the information such as charging expense.
The charging process protection module carries out earth leakage protective and overcurrent protection to charging pile and charging electric automobile.
Energy-storage module comprises and discharges and recharges control unit, photovoltaic generating module, PWM(Pulse Width Modulation, pulse width modulation) module, DC/DC modules A, DC/DC module B and energy-storage units, the energy scheduler module with discharge and recharge control unit, energy-storage units and DC/DC modules A and be connected.
Energy-storage module is used for constantly utilizing electrical network or utilizing solar energy to carry out power storage at the electrical network low ebb, photovoltaic generating module becomes electric energy with the transform light energy of the sun, be variable direct voltage by the DC/DC modules A with fixing dc voltage conversion, send into energy-storage units and store.Discharge and recharge control unit control connection PWM module and DC/DC module B, the electric energy that the electrical network low ebb sends energy-storage module constantly to converts alternating current to direct current through the PWM module, be variable direct voltage by DC/DC module B with fixing dc voltage conversion, send into energy-storage units and store.
Energy-storage units comprises electrokinetic cell and super capacitor, realizes the secondary utilization of electrokinetic cell.Wherein, electrokinetic cell is dynamic lithium battery, and the capacitance C of super capacitor is:
C = 2 [ ( U 2 - U 1 ) × I × t 1 + ( UI × Δt + U ( I - ΔI ) × Δt + · · · + U ( I - ( n - 1 ) ΔI ) × Δt ) ] U 2
Wherein, U 2Electrokinetic cell terminal voltage when constant-current phase transfers constant-voltage phase in the charging process, U 1Be the power battery charging starting voltage, I is the constant-current phase current value, and Δ I is constant voltage process electric current decline step-length, t 1Be the constant current charge duration, Δ t is the corresponding time of electric current decline Δ I,
Figure BDA00002198490100052
Be the umber of little time period of constant-voltage phase five equilibrium, t is the total duration of constant-voltage phase.
The capacity Q of dynamic lithium battery is: Q = U 2 l I ( t + h ) U 1 l ·
U wherein 2lBe electrokinetic cell voltage on the car, t is the charging interval, and h is the charging interval correction value, U 1lBe energy-storage module terminal voltage (energy-storage battery SOC is 15% corresponding voltage).
Embodiment two:
The operation method of a kind of charging pile that the embodiment two that the utility model provides provides for the utility model, charging pile is controlled by same management platform and manages, in the normal situation of electrical network, charging pile carries out the electric energy supply by the external power that electrical network provides to user's electric automobile, when network load is larger, can be by energy-storage module to user's charging electric vehicle, the flow chart of this operation method comprises as shown in Figure 3:
Step S1, charging pile starts charging according to the charging demand of user's electric automobile.
Step S2, the instruction that judges whether to receive distribution network system, be, execution in step S3, no, directly charge for user's electric automobile according to the electric energy of the charging demand utilization electrical network of user's electric automobile.
When network load was larger, distribution network system sent instructions under charging pile, comprised the load that present electrical network can provide in this instruction.
Step S3, the calculated load difference, the load that this load difference can provide for charging demand and the electrical network of user's electric automobile poor, judge this load difference whether be on the occasion of, be, execution in step S4, no, directly charge for user's electric automobile according to the electric energy of the charging demand utilization electrical network of user's electric automobile.
Step S4 can accept the discharging current that the direct-current discharge multiplying power is determined energy-storage module according to Vehicular charger rated power and energy-storage module.
Preferably, determine among the step S4 after the start time point of energy-storage module as charge power supply that energy-storage module comprises to the flow chart of user's charging electric vehicle as shown in Figure 4:
Step S401, when the arrival energy-storage module is made the start time point of charge power supply, judge the SOC(state of charge of the electrokinetic cell of energy-storage module, state-of-charge, the ratio of the capacity of the residual capacity charged state complete with it of storage battery) whether value is greater than recommended value, be execution in step S402; No, execution in step S403.
The SOC value that electrokinetic cell is set is for fear of the battery deep discharge greater than recommended value, prolongs the energy-storage battery life-span, and preferred, this recommended value is 15%.
Step S402, energy-storage module charges to user's Rechargeable vehicle, until charging process finishes, whether the SOC value that continues in the charging process to judge electrokinetic cell greater than recommended value, in case the SOC value of electrokinetic cell is satisfied during greater than recommended value, execution in step S403.
Preferably, whether energy-storage module has been in the flat peak phase this moment to user's Rechargeable vehicle detection of grid of charging simultaneously among the step S402, if be in the flat peak phase, then stop the energy storage charging, adopt electrical network to charge, if electrical network is in the load peak in charging process always, then adopt the energy-storage module charging.Make the user adopt as far as possible the electrical network electric energy to charge, the energy that consumes when reducing stored energy and release reduces as far as possible electrokinetic cell simultaneously and discharges and recharges number of times, increases the life-span of battery.
Step S403 judges currently whether reach the user power utilization needs, if do not satisfy, then superior supervisory control system application electrical network carries out AC charging to user's electric automobile.
The operation method of a kind of charging pile that embodiment two of the present utility model provides, if the load value that the charging demand of user's electric automobile can provide greater than this moment electrical network when starting the charging task, by energy-storage module user's electric automobile is charged, and calculate energy-storage module as the start time point of charge power supply.
When reaching energy-storage module as the start time point of charge power supply, if this moment, energy-storage module can not charge to user's electric automobile, and because the load of electrical network is real-time change, so also need to judge again the current user power utilization needs that whether reach, if also do not reach user's electricity consumption needs this moment, then the application of superior supervisory control system is carried out AC charging to user's electric automobile.
If reached the user power utilization needs, because the SOC value of current energy-storage module less than recommended value, can not be charged to user's electric automobile, so also comprise step S5, energy-storage module is charged.
The process that step S5 charges to energy-storage module comprises as shown in Figure 5:
Step S501 judges whether photovoltaic generating module can work, and is, execution in step S502 is no, energy-storage module is charged execution in step S504 by electrical network when the permission of network load situation is charged to energy-storage module.
Photovoltaic generating module is connecting energy-storage units and energy scheduler module, can start energy-storage units is carried out energy storage or directly is user's charging electric vehicle when external environment satisfies operating state.
Step S502 judges whether electrical network charges to energy-storage module, if it is stops electrical network and energy-storage module is charged execution in step S503.
Step S503 starts photovoltaic generating module and energy-storage module is charged execution in step S504.
Step S504 stops charging when reaching energy-storage module energy storage requirement.
Charging pile is in running, and energy storage situation that yet can the Real Time Monitoring energy-storage module is not charged to energy-storage module when energy-storage module reaches the energy storage requirement, therefore, also comprises before the above-mentioned steps S501:
Step S501 ', whether the real-time judge energy-storage module reaches the energy storage requirement, execution in step S501 when not reaching.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (7)

1. electric automobile charging pile, it is characterized in that, described charging pile comprises control unit, energy-storage module, communication module, energy scheduler module and output interface, the described communication module of described control unit control connection, energy scheduler module and output interface, described energy-storage module and described energy scheduler module interconnect;
Described energy-storage module storage of electrical energy;
Described communication module is communicated by letter with distribution network system, accepts the instruction of described distribution network system, comprises the network load situation in the instruction of described distribution network system;
Described energy scheduler module is determined the electric energy Source Of Supply of charging pile according to described network load situation, energy-storage module situation and user's request;
Described output interface determines that according to described energy scheduler module the electric energy Source Of Supply exports to user's electric automobile with the power supply that electrical network or electrical network and energy-storage module provide.
2. charging pile as claimed in claim 1 is characterized in that, described communication module comprises the GPRS interface, supports TCP/IP Ethernet interface, CAN bus communication interface, plc communication interface, Zigbee bus communication interface and 3G, 4G wireless communication interface.
3. charging pile as claimed in claim 1 is characterized in that, described charging pile comprises the charging metering module and the module of swiping the card;
Described charging metering module comprises energy-storage module energy accounting module and charging electric vehicle energy accounting module;
Described energy-storage module energy accounting module is used in the situation of described energy-storage module participation charging work described energy-storage module energy being carried out charging;
Described charging electric vehicle energy accounting module is used for consuming electric energy according to described energy-storage module energy accounting module and electrical network the energy of user's charging electric vehicle is carried out charging;
The described module of swiping the card is used for when described user's electric automobile starts charging the identity of described user's electric automobile being identified, and the expense of the energy of the charging electric vehicle that after charging finishes described charging metering module is calculated is settled accounts.
4. charging pile as claimed in claim 1 is characterized in that, described charging pile comprises human-machine interface module;
Described human-machine interface module comprises display screen, and described display screen is showed charging process voltage, electric weight and electric current to the user, charging interval, the information of charging expense.
5. charging pile as claimed in claim 1 is characterized in that, described charging pile comprises the charging process protection module, and described charging process protection module carries out earth leakage protective and overcurrent protection to described charging pile and described user's electric automobile.
6. charging pile as claimed in claim 1, it is characterized in that, described energy-storage module is used for constantly utilizing electrical network or utilizing solar energy to carry out power storage at the electrical network low ebb, comprise discharging and recharging control unit, photovoltaic generating module, PWM module, DC/DC modules A, DC/DC module B and energy-storage units that described energy scheduler module is connected with described control unit, energy-storage units and the DC/DC modules A of discharging and recharging;
Described DC/DC modules A one end connects described photovoltaic generating module, and the other end connects energy-storage units or energy scheduler module;
The described described PWM module of control unit control connection and the described DC/DC module B of discharging and recharging, described DC/DC module B one end connects described PWM module, and the other end connects described energy-storage units.
7. charging pile as claimed in claim 6 is characterized in that, described energy-storage units comprises electrokinetic cell and super capacitor, and described electrokinetic cell is dynamic lithium battery;
The capacity Q of described dynamic lithium battery is: Q = U 2 l I ( t + h ) U 1 l ·
Wherein, U 2lBe electrokinetic cell voltage on the car, t is the charging interval, and h is the charging interval correction value, U 1lFor energy-storage battery SOC is 15% corresponding energy-storage module terminal voltage;
The capacitance C of described super capacitor is:
C = 2 [ ( U 2 - U 1 ) × I × t 1 + ( UI × Δt + U ( I - ΔI ) × Δt + · · · + U ( I - ( n - 1 ) ΔI ) × Δt ) ] U 2
Wherein, U 2Electrokinetic cell terminal voltage when constant-current phase transfers constant-voltage phase in the charging process, U 1Be the power battery charging starting voltage, I is the constant-current phase current value, and Δ I is constant voltage process electric current decline step-length, t 1Be the constant current charge duration, Δ t is the corresponding time of electric current decline Δ I,
Figure FDA00002198490000023
Be the umber of little time period of constant-voltage phase five equilibrium, t is the total duration of constant-voltage phase.
CN 201220497488 2012-09-26 2012-09-26 Electric vehicle charging pile Expired - Lifetime CN202906510U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102903186A (en) * 2012-09-26 2013-01-30 北京国网普瑞特高压输电技术有限公司 Electromobile charging pile and operating method thereof
CN106356920A (en) * 2016-08-31 2017-01-25 北京博望华科科技有限公司 Electric vehicle charging management system and method
WO2017088334A1 (en) * 2015-11-25 2017-06-01 刘洋 Wireless communication technology-based charging pile using off-grid photovoltaic power generation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102903186A (en) * 2012-09-26 2013-01-30 北京国网普瑞特高压输电技术有限公司 Electromobile charging pile and operating method thereof
WO2017088334A1 (en) * 2015-11-25 2017-06-01 刘洋 Wireless communication technology-based charging pile using off-grid photovoltaic power generation
CN106356920A (en) * 2016-08-31 2017-01-25 北京博望华科科技有限公司 Electric vehicle charging management system and method

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