CN203377620U - Multi-port direct-current charging pile for electric automobile - Google Patents

Multi-port direct-current charging pile for electric automobile Download PDF

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Publication number
CN203377620U
CN203377620U CN201320342045.8U CN201320342045U CN203377620U CN 203377620 U CN203377620 U CN 203377620U CN 201320342045 U CN201320342045 U CN 201320342045U CN 203377620 U CN203377620 U CN 203377620U
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charging
unit
direct
control unit
current charging
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李武峰
李晓强
严辉
李索宇
边孝成
李凯旋
崔宇
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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 discloses a multi-port direct-current charging pile for an electric automobile, and the charging pile comprises a central control unit, a charging unit, an energy scheduling unit, a human-computer interface unit, communication units, a charging interface, and a guide control unit. The central control unit is connected with the charging unit, the energy scheduling unit, the human-computer interface unit, the communication units, the charging interface, and the guide control unit. The guide control unit is connected with the charging interface. The central control unit and the charging interface are respectively provided with one communication unit, and are respectively connected with a charging set through the communication units. According to the utility model, a one-pile multi-purpose function of the direct-current charging pile is achieved through the calculation of the energy scheduling unit and the control of the central control unit, thereby improving the application rate of energy, and saving the space occupied by a plurality of charging piles. Moreover, the charging pile provided by the utility model can be managed and scheduled by a superior monitoring system. A charging output power can be adjusted at the peak of a power grid load, thereby reducing the impact on a power grid.

Description

Many mouthfuls of direct-current charging posts of a kind of electric automobile
Technical field
The utility model belongs to the charger technical field, is specifically related to many mouthfuls of direct-current charging posts of a kind of electric automobile.
Background technology
Day by day serious along with energy crisis and environmental crisis, electric automobile becomes the focus of current development.But, electric automobile universal to electrically-charging equipment construction and efficient convenient the having higher requirement of charging.And, during charging electric vehicle, it is also a problem can not be ignored that its electrically-charging equipment construction is taken up an area.Under the situation of this shortage of land resource, how to resolve the problem that electrically-charging equipment and land resource are distributed, need research.
The utility model content
For the deficiencies in the prior art, the utility model proposes many mouthfuls of direct-current charging posts of a kind of electric automobile, by vehicle real time charging information monitoring, realize that the energy between many mouthfuls of charging piles is coordinated.
Many mouthfuls of direct-current charging posts of a kind of electric automobile that the utility model provides, its improvements are, described direct-current charging post comprises central control unit, Charging Detail Record unit, energy scheduling unit, human and machine interface unit, communication unit, charging inlet and guiding control unit;
Described central control unit is connected with described Charging Detail Record unit, energy scheduling unit, human and machine interface unit, charging inlet and guiding control unit respectively; Described guiding control unit is connected with described charging inlet;
Described central control unit and described charging inlet are furnished with respectively communication unit, by communication unit, with charger, are connected.
Wherein, described direct-current charging post comprises low pressure accessory power supply unit, and it adopts the Switching Power Supply of 12-24V;
Described central control unit is connected with described charging inlet by low pressure accessory power supply unit.
Wherein, described direct-current charging post comprises the charging process protected location, and it adopts earth leakage protective device or overcurrent protection circuit;
Described central control unit is connected with described charging inlet by the charging process protected location.
Wherein, described communication unit comprises any one or more of parallel GPRS interface, TCP/IP Ethernet interface, CAN bus communication interface and plc communication interface.
Wherein, described central control unit adopts the Freescale52259 chip.
Wherein, described Charging Detail Record unit adopts intelligent kilowatt-hour meter.
Wherein, described energy scheduling unit adopts TI company 28335 chips.
Wherein, described human and machine interface unit adopts LCDs.
Wherein, described charging inlet adopts 9 pin charging plugs.
Wherein, described guiding control unit comprises resistor voltage divider circuit and the A/D converting unit of connection; Described resistor voltage divider circuit is connected with described charging inlet, and described A/D converting unit is connected with described, CPU.
Compared with the prior art, the beneficial effects of the utility model are:
(1) the utility model adopts intensive energy dispatching management, by charging pile automatic switchover charge port, has improved the energy utilization rate.
(2) direct-current charging post of the present utility model, according to charging vehicle charging demand, complete one to fill more and coordinate the energy scheduling.
(3) of the present utility model enrich the multichannel effective isolation of now charging one more, when a passage vehicle and charging pile break down, do not affect another road charging inlet charging.
(4) direct-current charging post that fills of the present utility model can be accepted the management of higher level's supervisory control system and scheduling more, and in the situation of network load peak, capable of regulating charging power output, reduce the impact on electrical network.
The accompanying drawing explanation
The internal structure schematic diagram of the charging pile that Fig. 1 provides for the utility model.
Fig. 2 adds the charging pile internal structure schematic diagram behind the unit of swiping the card for what the utility model provided.
First judge the flow chart of watt level during charging pile DYNAMIC DISTRIBUTION power that Fig. 3 provides for the utility model.
embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Many mouthfuls of direct-current charging posts of a kind of electric automobile that the present embodiment proposes; its structural representation as shown in Figure 1; the present embodiment be take direct-current charging post and is comprised that two charging inlets are as the example explanation; direct-current charging post comprises central control unit, Charging Detail Record unit, energy scheduling unit, human and machine interface unit, communication unit, charging inlet, guiding control unit, low pressure accessory power supply unit and charging process protected location, wherein:
Central control unit is for carrying out data processing and control;
Charging inlet comprises two interfaces, and charging inlet 1 and charging inlet 2, for mating the interface of electric automobile;
The guiding control unit mainly detects electric automobile and charging pile connection status, gathers monitoring point voltage by resistor voltage divider circuit, then changes and deliver to CPU by A/D;
Communication unit is for communicating with charger;
Charging Detail Record unit is for calculating charge capacity and charging expense, and the conversion of completing user account and expense;
The energy scheduling unit is dispatched for a plurality of charging inlet electric energy, mainly according to the user, sets charging stop condition and the information such as vehicle service time, charge control method, calculates the charging overall control strategy of each charge port, realizes that charge power dynamically allocates;
Human and machine interface unit for showing that the user uses information, comprises charge mode, charging cut-off condition, vehicle service time, charge control method.
Wherein, central control unit is connected with described Charging Detail Record unit, energy scheduling unit, human and machine interface unit, charging inlet and guiding control unit respectively; The guiding control unit is connected with charging inlet;
Central control unit and two charging inlets are furnished with respectively communication unit, for communicating by letter with charger;
Charger is used for charging electric vehicle.
Corresponding, realize that the circuit part of the present embodiment charging pile comprises:
Communication unit mainly comprises any one or more of parallel GPRS interface, TCP/IP Ethernet interface, CAN bus communication interface and plc communication interface;
Central control unit is selected the Freescale52259 chip;
Charging Detail Record unit is selected intelligent kilowatt-hour meter.
The energy scheduling unit is selected TI company 28335 chips.
Human and machine interface unit is selected LCDs.
Charging inlet is selected 9 pin charging plugs.
The guiding control unit comprises resistor voltage divider circuit and the A/D converting unit of connection; Described resistor voltage divider circuit is connected with described charging inlet, and described A/D converting unit is connected with described, CPU.
The preferred version of the present embodiment is on the basis of the above, adds low pressure accessory power supply unit and charging process protected location, for the protection of circuit, wherein:
Low pressure accessory power supply unit, can select the Switching Power Supply of 12-24V, for vehicle BMS power management, when the guiding control unit completes charging, connects and judge, by described low pressure accessory power supply unit, realizes the BMS Power supply.Central control unit is connected with charging inlet by low pressure accessory power supply unit.
The charging process protected location, can select earth leakage protective device or overcurrent protection circuit, for realizing surge protection, earth leakage protective and overvoltage protection.The charging process protected location is placed on the circuit that central control unit is connected with charging inlet.
Another preferred version of the present embodiment, also can add the unit of swiping the card, as shown in Figure 2.The unit of swiping the card is connected with CPU, for identifying user identity, reads user account information, the corresponding consumer record database of setting up.Radio-frequency card reader can be selected in the unit of swiping the card of the present embodiment.
Corresponding, the present embodiment has proposed the control method of many mouthfuls of direct-current charging posts of a kind of electric automobile, comprises the steps:
(1) user is connected electric automobile with the charging inlet of direct-current charging post;
(2) user card punching, to input charging cut-off condition (SOC cut-off, time cut-off, amount of money cut-off) and vehicle service time (after charging, estimating service time), next day estimate the information such as distance travelled by man-machine interaction unit, select charging control model (charging cost is minimum, the charging interval is the fastest and charge normal three kinds of patterns) simultaneously;
(3) after the guiding control unit is confirmed the charging plug exact connect ion, central control unit is controlled direct-current charging post to charging electric vehicle;
(4) when another electric automobile is prepared charging at another charging inlet place of direct-current charging post, after user card punching, the energy scheduling unit calculates the power demand of each charging inlet, dynamic assignment charger two-way power output.
Wherein, during described dynamic assignment charger two-way power output, first judge the power of electric automobile demand, as shown in Figure 3, concrete steps comprise its flow chart:
1. the energy scheduling unit calculates the minimum charge power that meets the charging demand;
2. judge whether the gross power that electric automobile needs is less than the gross power of direct-current charging post output, if obtain charging rate information in the charging interval, calculate charge power the output of each time period according to minimum cost, otherwise carry out step 3.;
3. judge whether the gross power that electric automobile needs equals the gross power that direct-current charging post is exported, if according to the charging interval pro rate charge power of electric automobile, obtain charging rate information in the charging interval, calculate charge power the output of each time period according to minimum cost, otherwise the large user of prompting power demand can not meet charging demand (maybe please change).
The expression formula of the gross power of direct-current charging post output is as follows:
P P = P 1 + P 2 = U 1 * 1 T 1 * C 1 + U 2 * 1 T 2 * C 2 ;
In formula, C 1, C 2be respectively the 1st charging inlet and the 2nd charging inlet rechargeable battery capacity, unit is Ah; U 1, U 2be respectively the 1st charging inlet and the 2nd charging inlet output voltage, unit is V; T 1, T 2be respectively the specified charging interval of setting, unit is hour; P 1, P 2be respectively the rated output power of the 1st charging inlet and the 2nd charging inlet; P pfor the charging pile gross output.
Calculate the power output of each charging inlet, its expression formula is as follows:
Figure BDA00003348913100051
In formula, P 1 *, P 2 *be respectively the real output of the 1st charging inlet and the 2nd charging inlet; t 1, t 2be respectively the actual charging required time of the 1st charging inlet and the 2nd charging inlet.
The direct-current charging post of the present embodiment can be controlled by unified management platform and manage (being supervisory control system), can accept superior platforms power and control.Utilize the panorama EMS, meritorious, idle bound that any one is possessed to access charging pile terminal are carried out unified coordination and administration, charging station are accessed to the power distribution network dispatching patcher simultaneously, realize unified management.In peak of power consumption (according to the electricity consumption situation on the same day, generally may be defined as 17 point～21 or 11 thirty～1 thirty) time, the energy scheduling unit is accepted higher level's dispatching patcher (being supervisory control system) and is issued power limit, and calculate minimum charge power according to charging vehicle charging demand, if charge power can be lowered (condition still can meet user's time requirement after extending the charging interval), the response battery temporarily serves as meritorious source (supervisory control system is controlled its dwell time), discharge active power, balance distribution network system crest;
Minimum charge power computing formula is:
P min = C 1 * ( SOC el - SOC 1 ) T e 1 - T r 1 * U 1 + C 2 * ( SOC e 2 - SOC 2 ) T e 2 - T r 2 * U 2 ;
In formula, SOC 1, SOC 2be respectively the electric automobile currency of the 1st charging inlet and the 2nd charging inlet; SOC e1, SOC e2be respectively the electric automobile cutoff of the 1st charging inlet and the 2nd charging inlet; T e1, T e2be respectively the charging electric vehicle deadline of the 1st charging inlet and the 2nd charging inlet; T r1, T r2be respectively the current charging interval of the 1st charging inlet and the 2nd charging inlet.
By the power distribution network synthesis dispatching patcher, implement differential step price metering method, more can effectively realize saving the battery charging and discharging cost, when electricity price is high, do not charge, when at a low price low, battery is charged, cost-saving, the major control mode is whether preferential calculating meets user's demand of charging, under the condition satisfied the demands, realize that charging cost is minimum.Need to meet the block meter rate overall expenses minimum, the computational methods of minimum cost are as follows.
min ( Σ i = 1 k c i p i ) ;
In formula, k is different rate period numbers in charging process; I is the time period numbering, c ibe i time period rate, p iit is i time period charge power.
Above-mentioned expression formula need to satisfied constraints be that the charge power of each time period is less than every mouthful of charger power output.Charge capacity sum of all periods is total charge capacity simultaneously.Expression formula is shown in following formula.
Σ i = 1 k t i p i = ( SOC el - SOC 1 ) C 1 ∀ p i ≤ p 1 ( i = 1 . . . k ) (first charge port constraints);
Σ i = 1 k t i p i = ( SOC e 2 - SOC 2 ) C 2 ∀ p i ≤ p 2 ( i = 1 . . . k ) (second charge port constraints).
Finally should be noted that: 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 modify 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 claim scope of the present utility model.

Claims (10)

1. many mouthfuls of direct-current charging posts of an electric automobile, is characterized in that, described direct-current charging post comprises central control unit, Charging Detail Record unit, energy scheduling unit, human and machine interface unit, communication unit, charging inlet and guiding control unit;
Described central control unit is connected with described Charging Detail Record unit, energy scheduling unit, human and machine interface unit, charging inlet and guiding control unit respectively; Described guiding control unit is connected with described charging inlet;
Described central control unit and described charging inlet are furnished with respectively communication unit, by communication unit, with charger, are connected.
2. direct-current charging post as claimed in claim 1, is characterized in that, described direct-current charging post comprises low pressure accessory power supply unit, and it adopts the Switching Power Supply of 12-24V;
Described central control unit is connected with described charging inlet by low pressure accessory power supply unit.
3. direct-current charging post as claimed in claim 1, is characterized in that, described direct-current charging post comprises the charging process protected location, and it adopts earth leakage protective device or overcurrent protection circuit;
Described central control unit is connected with described charging inlet by the charging process protected location.
4. direct-current charging post as claimed in claim 1, is characterized in that, described communication unit comprises any one or more of parallel GPRS interface, TCP/IP Ethernet interface, CAN bus communication interface and plc communication interface.
5. direct-current charging post as claimed in claim 1, is characterized in that, described central control unit adopts the Freescale52259 chip.
6. direct-current charging post as claimed in claim 1, is characterized in that, described Charging Detail Record unit adopts intelligent kilowatt-hour meter.
7. direct-current charging post as claimed in claim 1, is characterized in that, described energy scheduling unit adopts TI company 28335 chips.
8. direct-current charging post as claimed in claim 1, is characterized in that, described human and machine interface unit adopts LCDs.
9. direct-current charging post as claimed in claim 1, is characterized in that, described charging inlet adopts 9 pin charging plugs.
10. direct-current charging post as claimed in claim 1, is characterized in that, described guiding control unit comprises resistor voltage divider circuit and the A/D converting unit of connection; Described resistor voltage divider circuit is connected with described charging inlet, and described A/D converting unit is connected with described, CPU.
CN201320342045.8U 2013-03-06 2013-06-14 Multi-port direct-current charging pile for electric automobile Expired - Lifetime CN203377620U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103997079A (en) * 2014-04-18 2014-08-20 河南速达电动汽车科技有限公司 Electric automobile AC charging pile and application method thereof
CN104868549A (en) * 2015-05-27 2015-08-26 国家电网公司 Energy interactive charging gun
CN104882937A (en) * 2015-06-04 2015-09-02 中国民航大学 Wired charging system of electric special vehicle
CN105048547A (en) * 2015-07-13 2015-11-11 清华大学 Charging device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103997079A (en) * 2014-04-18 2014-08-20 河南速达电动汽车科技有限公司 Electric automobile AC charging pile and application method thereof
CN103997079B (en) * 2014-04-18 2016-04-06 河南速达电动汽车科技有限公司 A kind of electric vehicle alternating-current charging pile and using method thereof
CN104868549A (en) * 2015-05-27 2015-08-26 国家电网公司 Energy interactive charging gun
CN104882937A (en) * 2015-06-04 2015-09-02 中国民航大学 Wired charging system of electric special vehicle
CN105048547A (en) * 2015-07-13 2015-11-11 清华大学 Charging device

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