CN206277962U - A kind of electric automobile DC charging system - Google Patents

A kind of electric automobile DC charging system Download PDF

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Publication number
CN206277962U
CN206277962U CN201621163166.6U CN201621163166U CN206277962U CN 206277962 U CN206277962 U CN 206277962U CN 201621163166 U CN201621163166 U CN 201621163166U CN 206277962 U CN206277962 U CN 206277962U
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China
Prior art keywords
charging
charging module
module
adjustable
gun
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Active
Application number
CN201621163166.6U
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Chinese (zh)
Inventor
胡大满
张瑞丰
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Yutong Bus Co.,Ltd.
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Zhengzhou Yutong Bus Co Ltd
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Priority to CN201621163166.6U priority Critical patent/CN206277962U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

A kind of electric automobile DC charging system provided by the utility model, the adjustable adjustable charging module of output current is set to by the one of charging module in charging system, and remaining is respectively provided with as the nonadjustable specified charging module of output current.When being charged for vehicle to be charged, the regulation to charging gun charging current is capable of achieving by the quantity of the specified charging module for controlling charging gun to connect and the output current of adjustable charging module, control logic is fairly simple, and its actual continuous tuning range is smaller, will not cause larger error.

Description

A kind of electric automobile DC charging system
Technical field
The utility model is related to charging electric vehicle technical field, and in particular to a kind of electric automobile DC charging system.
Background technology
At present, the energy of conventional fuel oil automobile is relied primarily in oil, and the tail gas of oil shortage and fuel emission is to ring Border has caused severe contamination so that the mankind more and more urgently work out new green traffic instrument.As green traffic instrument, electricity Not only energy-saving effect is notable for electrical automobile, and comprehensive utilization of energy rate is increased substantially, and tail gas zero-emission, and environmental benefit is obvious, Therefore the use of electric automobile is more and more extensive.
The power of electric automobile comes from electrokinetic cell, and the charging rate of electrokinetic cell is slow, course continuation mileage is short is always The key factor that restriction electric automobile is promoted on a large scale.In view of electrokinetic cell energy density slower development, quick using high current Charging can promote the key condition of electric automobile as the current generation.But because the current capacity of charging gun line receives own hardware The restriction of condition, causing single rifle to charge can not meet the trend of high current quick charge.
Many producers realize high current quick charge, and the charge control side for using using multiple gun charge mode at present Method is each charging gun average output current to meet BMS request current values, such as, be electrokinetic cell when two charging guns are used When being charged, if electrokinetic cell request electric current is 500A, two charging guns export the electric current of 250A respectively.
Although this control method can meet high current quick charge, charging gun line loss can be caused to consume too fast, made Into the increase of cost, than be used as described above two charging guns for same electrokinetic cell charged when, it is assumed that it is every charging gun Maximum current capacity be 250A, if electric current needed for power battery charging is 500A, two charging guns need to export respectively The electric current of 250A;Electric current is according to present battery parameter (SOC, battery temperature, monomer needed for power battery charging in charging process Voltage etc.) become when turning to 200A, then need two charging guns to export the electric current of 100A respectively, and now only need a charging gun defeated Electrokinetic cell demand is met by going out, without being exported using two charging guns again simultaneously, causes excessive loss.
The output current of charging gun be by charger inside charging module provide, and each charging module is maximum defeated Output capacity is identical, and such as each charging module maximum output current is 20A, then when charging gun needs to export the charging current of 250A When, it is necessary to 13 charging modules, wherein 12 charging modules are provided which the electric current of 20A, another charging module provides the electricity of 10A Stream.At present, all of charging module in charger inside is and exports adjustable, and each charging module described above can export 0 and arrive The electric current of 20A, so not only control logic is complicated, the stabilization output of influence charging module, and easily causes charging gun output electricity Stream precision is low, and error is larger.
Utility model content
The utility model provides a kind of electric automobile DC charging system, is used to solve the above-mentioned control logic when charging to answer Miscellaneous problem.
A kind of electric automobile DC charging system, including charging gun and charging module, the charging module are used for charge Rifle provides electric current;Wherein charging module includes an adjustable adjustable charging module of output current and at least one output current not Adjustable specified charging module.
A kind of electric automobile DC charging system provided by the utility model, by the one of charging in charging system Module is set to the adjustable adjustable charging module of output current, and remaining is respectively provided with as the nonadjustable specified charging of output current Module.When being charged for vehicle to be charged, by the quantity of the specified charging module for controlling charging gun to connect and adjustable fill The output current of electric module is to be capable of achieving regulation to charging gun output current, and control logic is fairly simple, and it actual connects Continuous adjustable extent is smaller, and current precision is higher, will not cause larger output error.
Further, the specified electricity that the maximum output current of the adjustable charging module is exported with each specified charging module Stream is equal.
The maximum output current of adjustable charging module is equal with the rated current that each specified charging module is exported, can Contact regulation is carried out to charging voltage.
Further, the DC charging system includes at least two charging guns, and each charging gun shares a dc bus; The output end of each charging module and the input of each charging gun are by corresponding switch connection dc bus.
Further, the DC charging system includes at least two charging guns;It is every that charging gun is equipped with accordingly directly Stream bus, each charging module is connected the dc bus of charging gun with every by corresponding switch.
Brief description of the drawings
Fig. 1 is the structural representation of electric automobile DC charging system in embodiment 1;
Fig. 2 is the structural representation of electric automobile DC charging system in embodiment 2.
Specific embodiment
The utility model provides a kind of electric automobile DC charging system, is used to solve the above-mentioned control logic when charging to answer Miscellaneous problem.
A kind of electric automobile DC charging system, including charging gun and charging module, the charging module are used for charge Rifle provides electric current;Wherein charging module includes an adjustable adjustable charging module of output current and at least one output current not Adjustable specified charging module.
A kind of electric automobile DC charging system provided by the utility model, by the one of charging in charging system Module is set to the adjustable adjustable charging module of output current, and remaining is respectively provided with as the nonadjustable specified charging of output current Module.When being charged for vehicle to be charged, by the quantity of the specified charging module for controlling charging gun to connect and adjustable fill The output current of electric module is to be capable of achieving regulation to charging gun output current, and control logic is fairly simple, and it actual connects Continuous adjustable extent is smaller, and current precision is higher, will not cause larger output error.
The utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1:
A kind of electric automobile DC charging system that the present embodiment is provided is as shown in figure 1, including charging gun 1, charging gun 2nd, charging gun 3 ... charging gun y etc. is more charging gun, and x is more for charging module 1, charging module 2, charging module 3 ... charging module The individual nonadjustable specified charging module of output, also including the adjustable adjustable charging module of dc bus and output current.It is adjustable to fill The output end of electric module and each specified charging module, and the input of each charging gun is connected with dc bus;In charging gun 1 The circuit for connecting dc bus is provided with switch K21, and switch K22 ... is provided with the circuit of the connection dc bus of charging gun 2 Switch K2y etc. is provided with the circuit of charging gun y connection dc bus.The rated current that each specified charging module can be provided It is L to be worth, and the maximum current value that adjustable charging module can be provided also is L.
The electric automobile DC charging system that the present embodiment is provided, its charge control method is as follows:
(1) charging gun is connected the charging inlet of vehicle to be charged, off-board charger and vehicle BMS's to be charged is set up Communication connection, while connecting the charging gun connection dc bus of vehicle to be charged;
(2) off-board charger is when the BMS with vehicle to be charged carries out information exchange, needed for obtaining vehicle to be charged Charging current B;
(3) according to formula n × L≤B < (n+1) × L, n specified charging module is chosen, and control the n specified charging Module exports rated current to dc bus;Switch K0 is closed simultaneously, the electric current that adjustable charging module is exported is set to B-n ×L。
As other embodiment, the maximum current that adjustable charging module can be provided can be set greater than the value of L.
In the electric automobile DC charging system structural representation that the present embodiment is provided, i.e. in Fig. 1, dc bus and each Charging module, the circuit of charging gun connection dc bus are two lines road, in the present embodiment in order to simplify circuit, are conveniently looked into See, be denoted as a circuit.
Embodiment 2:
A kind of electric automobile DC charging system that the present embodiment is provided is as shown in Fig. 2 including charging gun 1, charging gun 2nd, charging gun 3 ... charging gun y etc. is more charging gun, and x is more for charging module 1, charging module 2, charging module 3 ... charging module The individual nonadjustable specified charging module of output, it is every that the input of charging gun is respectively connected with corresponding dc bus;Also include opening Matrix and the adjustable adjustable charging module of output current are closed, the output end of each charging module is connected each charging gun by switch matrix Input.The load current value that each specified charging module can be provided is L, the maximum current that adjustable charging module can be provided Value is also L.
The electric automobile DC charging system that the present embodiment is provided, its charge control method is as follows:
(1) charging gun is connected the charging inlet of vehicle to be charged, foundation is connected with the communication of vehicle BMS to be charged;
(2) off-board charger is when the BMS with vehicle to be charged carries out information exchange, needed for obtaining vehicle to be charged Charging current B;
(3) according to formula n × L≤B < (n+1) × L, n specified charging module is chosen, control is corresponding to switch closure, This n specified charging module and adjustable charging module are connected on the charging gun being connected with vehicle to be charged together, will be adjustable Charging module is also connected on charging gun, and the electric current of output is set to B-n × L.
Other embodiment, the maximum current that adjustable charging module can be provided can be set greater than the value of L the most.
In the electric automobile DC charging system structural representation that the present embodiment is provided, i.e. in Fig. 2, each charging gun it is straight The circuit of stream bus and each charging module connection charging gun dc bus is two lines road, in the present embodiment in order to simplify line Road, conveniently checks, is denoted as a circuit.
The specific embodiment that the utility model is related to is presented above, but the utility model is not limited to described reality Apply mode.Under the thinking that the utility model is given, to above-mentioned by the way of being readily apparent that to those skilled in the art Technological means in embodiment enters line translation, replacement, modification, and plays a part of and the relevant art hand in the utility model Section is essentially identical, utility model purpose that is realizing is also essentially identical, and the technical scheme for so being formed is that above-described embodiment is carried out What fine setting was formed, this technical scheme is still fallen within protection domain of the present utility model.

Claims (4)

1. a kind of electric automobile DC charging system, it is characterised in that including charging gun and charging module, the charging module is used In providing electric current for charging gun;Wherein charging module is defeated including an adjustable adjustable charging module of output current and at least one Go out the nonadjustable specified charging module of electric current.
2. a kind of electric automobile DC charging system according to claim 1, it is characterised in that the adjustable charging module Maximum output current it is equal with the rated current that each specified charging module is exported.
3. a kind of electric automobile DC charging system according to claim 1, it is characterised in that the DC charging system Including at least two charging guns, each charging gun shares a dc bus;The output end and each charging gun of each charging module Input by corresponding switch connection dc bus.
4. a kind of electric automobile DC charging system according to claim 1, it is characterised in that the DC charging system Including at least two charging guns;Every that charging gun is equipped with corresponding dc bus, each charging module by opening accordingly Pass is connected the dc bus of charging gun with every.
CN201621163166.6U 2016-11-01 2016-11-01 A kind of electric automobile DC charging system Active CN206277962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621163166.6U CN206277962U (en) 2016-11-01 2016-11-01 A kind of electric automobile DC charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621163166.6U CN206277962U (en) 2016-11-01 2016-11-01 A kind of electric automobile DC charging system

Publications (1)

Publication Number Publication Date
CN206277962U true CN206277962U (en) 2017-06-27

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CN201621163166.6U Active CN206277962U (en) 2016-11-01 2016-11-01 A kind of electric automobile DC charging system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111251926A (en) * 2020-02-05 2020-06-09 郑州铁路职业技术学院 New energy vehicle charging system and charging control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111251926A (en) * 2020-02-05 2020-06-09 郑州铁路职业技术学院 New energy vehicle charging system and charging control method
CN111251926B (en) * 2020-02-05 2021-02-23 郑州铁路职业技术学院 New energy vehicle charging system and charging control method

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CP03 Change of name, title or address

Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province

Patentee after: Yutong Bus Co.,Ltd.

Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou

Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd.