CN107453440A - A kind of charging device based on electric power electric transformer - Google Patents
A kind of charging device based on electric power electric transformer Download PDFInfo
- Publication number
- CN107453440A CN107453440A CN201710822961.4A CN201710822961A CN107453440A CN 107453440 A CN107453440 A CN 107453440A CN 201710822961 A CN201710822961 A CN 201710822961A CN 107453440 A CN107453440 A CN 107453440A
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- CN
- China
- Prior art keywords
- charging
- bus
- converters
- electric
- transformer
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
Abstract
The invention discloses a kind of charging device based on electric power electric transformer, and it includes electric power electric transformer, control unit, DC meter scale, two-way DC/DC converters, DC/DC converters, lithium battery energy storage battery unit, low pressure Auxiliary Power Units, control unit；Electric power electric transformer is connected with control unit, and dc bus is connected with electric power electric transformer；Dc bus is also connected with DC charging rifle；DC meter scale is connected with DC charging rifle；Dc bus is also connected with two-way DC/DC converters, and lithium battery energy storage battery unit is connected with two-way DC/DC converters；Dc bus is also connected with DC/DC converters；Low pressure Auxiliary Power Units are connected with DC/DC converters.The beneficial aspects that the present invention obtains are：AC charging and DC charging can be exported, and is controlled flexibly, conveniently, available for charging electric vehicle, the construction cost of substantial amounts of AC and DC charging pile can be saved, reduce land seizure.
Description
Technical field
The present invention relates to charging electric vehicle technical field, particularly a kind of charging dress based on electric power electric transformer
Put.
Background technology
At present, charging electric vehicle facility includes AC and DC charging two ways, and AC charging refers to, alternating-current charging pile
0.38 kilovolt of low-voltage network is accessed nearby, and 220V or 380V alternating currents are provided, what it is from alternating-current charging pile output is alternating current, by
Vehicular charger completes ac-dc conversion.DC charging refers to that direct-current charging post access is public to be become or specially become and provide 380V exchanges
Electricity, what it is from direct-current charging post output is direct current, and ac-dc conversion is completed by off-board charger.
But be present the shortcomings that needing a large amount of charging piles of resume and taking a large amount of soils in current technology, and can not have simultaneously
AC charging and the function of DC charging.
The content of the invention
In view of the drawbacks described above of prior art, it is an object of the invention to provide a kind of based on electric power electric transformer
Charging device, AC charging and DC charging can be exported, and controlled flexibly, conveniently, available for charging electric vehicle, can saved
The construction cost of substantial amounts of AC and DC charging pile, reduces land seizure.
The purpose of the present invention realizes that a kind of charging based on electric power electric transformer fills by such technical scheme
Put, it includes：Electric power electric transformer, control unit, DC meter scale, two-way DC/DC converters, DC/DC converters, lithium
Battery energy storage unit, low pressure Auxiliary Power Units, control unit；
The electric power electric transformer is connected with described control unit, the dc bus and the electric power electric transformer
Connection, described control unit control the dc bus output direct current；
The dc bus is also connected with least one DC charging rifle, is filled by the DC charging rifle to electric automobile
Electricity；
At least one DC meter scale is connected with the DC charging rifle, for measuring DC charging amount；
The dc bus is also connected with the two-way DC/DC converters, the lithium battery energy storage battery unit with it is described two-way
DC/DC converters connect；The dc bus is filled by the two-way DC/DC converters to the lithium battery energy storage battery unit
Electricity, and control charging current；
The lithium battery energy storage battery unit is discharged dc bus so as to remain straight by the two-way DC/DC converters
Flow the voltage stabilization of bus bar side；
The dc bus is also connected with the DC/DC converters, and the DC/DC converters will using chopped wave technique
DC voltage on dc bus is converted to low-voltage DC；
The low pressure Auxiliary Power Units are connected with the DC/DC converters, and the DC/DC converters are by low-voltage DC
Export to the low pressure Auxiliary Power Units；The low pressure Auxiliary Power Units give batteries of electric automobile during DC charging
Management system is powered.
Further, described device also includes ac bus, exchange gauge table, AC charging rifle；
The ac bus is connected with the electric power electric transformer, and described control unit controls the power electronics transformation
Device exports industrial-frequency alternating current from the ac bus；
The ac bus is connected with least one AC charging rifle, for the charging electric vehicle；
At least one exchange gauge table is connected with the AC charging rifle, for measuring ac electric.
Further, described device also includes the man-machine interaction unit being connected with described control unit, the man-machine interaction
Unit completes input through keyboard, screen display function.
Further, described device also includes the communication unit being connected with described control unit, for back-stage management system
System is communicated.
Further, described device also includes the payment unit of described control unit connection, and the payment unit is used
The electricity charge, the payment of service charge paid needed for the charging of family.
Further, described control unit controls 200~1000V of dc bus output direct current.
Further, the DC voltage on dc bus is converted to 12V by the DC/DC converters using chopped wave technique
± 5% low-voltage DC.
Further, the electric power electric transformer also includes：
S1：Industrial frequency AC carries out ac/dc conversion on primary side electric power electric transformer；
S2：Direct current signal after conversion is modulated to high-frequency signal；
S3：The high-frequency signal is coupled to secondary electric power electric transformer through high frequency transformer and carries out AC/DC turn
Change；
S4：AC signal after output conversion.
By adopting the above-described technical solution, the present invention has the advantage that：Friendship from an electric power electric transformer,
Dc bus draws power supply respectively, has saved the construction cost and land seizure of substantial amounts of AC and DC charging pile；Pass through master control list
Member controls multiple AC and DC charging processes, charge request can be ranked according to the taiwan area load condition of transformer, realization has
Sequence charges, and reduces the impact to power distribution network.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can be wanted by following specification and right
Book is sought to realize and obtain.
Brief description of the drawings
The brief description of the drawings of the present invention is as follows：
Fig. 1 is the connection diagram of the present invention.
Fig. 2 is the schematic diagram of the electric power electric transformer of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment：As depicted in figs. 1 and 2；A kind of charging device based on electric power electric transformer, it includes：Electric power
It is electronic transformer, control unit, DC meter scale, two-way DC/DC converters, DC/DC converters, lithium battery energy storage battery unit, low
Press Auxiliary Power Units, control unit；
The electric power electric transformer is connected with described control unit, the dc bus and the electric power electric transformer
Connection, described control unit control the dc bus output direct current；Electric power electric transformer passes through Technics of Power Electronic Conversion skill
The industrial frequency AC input signal of transformer primary side is transformed to high-frequency signal by art, after high frequency transformer is coupled to secondary, then is passed through
Technics of Power Electronic Conversion is reduced into industrial frequency AC output.
Typically transformer primary side carry out AC/DC conversion, then by HVDC Modulation be high-frequency signal through high frequency transformer coupling
After closing secondary, DC/AC conversion is carried out in secondary, as shown in Figure 2.High frequency transformer plays isolation and transformer action, because of core type
The volume of transformer is inversely proportional with frequency, so the volume of high frequency transformer is much smaller than Industrial Frequency Transformer, its whole efficiency is high.
The dc bus is also connected with N number of DC charging rifle, and the DC charging of DC charging rifle insertion electric automobile is inserted
In seat, by the DC charging rifle to charging electric vehicle；
N number of DC meter scale is connected with the DC charging rifle, for measuring DC charging amount；
The dc bus is also connected with the two-way DC/DC converters, the lithium battery energy storage battery unit with it is described two-way
DC/DC converters connect；Role is：When the voltage of dc bus side is higher than setting value, the dc bus passes through
The two-way DC/DC converters charge to the lithium battery energy storage battery unit, and control charging current；
When the voltage of dc bus side falls, the lithium battery energy storage battery unit is converted by the two-way DC/DC
Device is discharged dc bus so as to maintain the voltage stabilization of dc bus side；
The dc bus is also connected with the DC/DC converters, and the DC/DC converters will using chopped wave technique
DC voltage on dc bus is converted to low-voltage DC；
The low pressure Auxiliary Power Units are connected with the DC/DC converters, and the DC/DC converters are by low-voltage DC
Export to the low pressure Auxiliary Power Units；The low pressure Auxiliary Power Units give batteries of electric automobile during DC charging
Management system is powered.
Described device also includes ac bus, exchange gauge table, AC charging rifle；
The ac bus is connected with the electric power electric transformer, and described control unit controls the power electronics transformation
Device exports industrial-frequency alternating current from the ac bus；
The ac bus is connected with N number of AC charging rifle, and AC charging rifle inserts the AC charging socket of electric automobile
In, for the charging electric vehicle；
N number of exchange gauge table is connected with the AC charging rifle, for measuring ac electric.
Described device also includes the man-machine interaction unit being connected with described control unit, and the man-machine interaction unit is completed
Input through keyboard, screen display function.
Described device also includes the communication unit being connected with described control unit, for being led to background management system
Letter.
Described device also includes the payment unit of described control unit connection, and the payment unit is used for user's charging institute
The electricity charge, the payment of service charge that need to be paid.
Described control unit controls 200~1000V of dc bus output direct current.
DC voltage on dc bus is converted to 12V ± 5% by the DC/DC converters using chopped wave technique
Low-voltage DC.
The electric power electric transformer also includes：
S1：Industrial frequency AC carries out ac/dc conversion on primary side electric power electric transformer；
S2：Direct current signal after conversion is modulated to high-frequency signal；
S3：The high-frequency signal is coupled to secondary electric power electric transformer through high frequency transformer and carries out AC/DC turn
Change；
S4：AC signal after output conversion.
The specific works step of the present invention is as follows：
(1) after user's vehicle stops well, placed an order by cell phone application, send charge request；
(2) after control unit receives charge request, according to current existing order situation, the emergency of charge request,
The information such as the current Real-time Load situation of electric power electric transformer are ranked to charge request, and this sequentially can be instant as needed
Adjustment, realize charging in order；
(3) after control unit response charge request, detection instruction is assigned to charging pile corresponding to the request, such as detects this
Charging plug be connected with electric automobile finish, charge it is ready after, suitable power switch, to charging electric vehicle；
(4) in 90 seconds after detection instruction is sent, it is abnormal such as detects that the charging plug is connected with electric automobile, prompts
User plugs in rifle again；
(5) user does not plug in rifle again such as in 90 seconds, or user still detects exception by plugging in rifle, control unit again three times,
Then stop respond this charge request, and onscreen cue charge failure the reason for, control unit transfers to respond next charging
Request；
(6) after once charging terminates, the metering units measure to charge capacity, charging interval, and are sent to master
Control unit；The main control unit sends sequence information, payment information to user by background management system.
The device have the advantages that：Power supply is drawn respectively from the AC and DC bus of an electric power electric transformer, is saved
The about construction cost and land seizure of substantial amounts of AC and DC charging pile；Multiple AC and DCs are controlled to charge by main control unit
Journey, charge request can be ranked according to the taiwan area load condition of transformer, realize charging in order, reduce and power distribution network is rushed
Hit.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (8)
1. a kind of charging device based on electric power electric transformer, it is characterised in that described device includes：Power electronics transformation
Device, control unit, DC meter scale, two-way DC/DC converters, DC/DC converters, lithium battery energy storage battery unit, low pressure auxiliary electricity
Source unit, control unit；
The electric power electric transformer is connected with described control unit, and the dc bus connects with the electric power electric transformer
Connect, described control unit controls the dc bus output direct current；
The dc bus is also connected with least one DC charging rifle, by the DC charging rifle to charging electric vehicle；
At least one DC meter scale is connected with the DC charging rifle, for measuring DC charging amount；
The dc bus is also connected with the two-way DC/DC converters, the lithium battery energy storage battery unit and the two-way DC/DC
Converter connects；The dc bus is charged by the two-way DC/DC converters to the lithium battery energy storage battery unit, and
Control charging current；
The lithium battery energy storage battery unit is discharged dc bus by the two-way DC/DC converters so as to maintain direct current female
The voltage stabilization of line side；
The dc bus is also connected with the DC/DC converters, and the DC/DC converters use chopped wave technique by direct current
DC voltage on bus is converted to low-voltage DC；
The low pressure Auxiliary Power Units are connected with the DC/DC converters, and the DC/DC converters are by low-voltage direct electricity output
To the low pressure Auxiliary Power Units；The low pressure Auxiliary Power Units give batteries of electric automobile management during DC charging
System power supply.
2. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that described device also includes
There are ac bus, exchange gauge table, AC charging rifle；
The ac bus is connected with the electric power electric transformer, described control unit control the electric power electric transformer from
Industrial-frequency alternating current is exported in the ac bus；
The ac bus is connected with least one AC charging rifle, for the charging electric vehicle；
At least one exchange gauge table is connected with the AC charging rifle, for measuring ac electric.
3. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that described device also includes
There is the man-machine interaction unit being connected with described control unit, the man-machine interaction unit completes input through keyboard, screen display function.
4. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that described device also includes
There is the communication unit being connected with described control unit, for being communicated with background management system.
5. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that described device also includes
There is the payment unit that described control unit connects, the payment unit is used for the electricity charge, the service charge paid needed for user's charging
Pay.
6. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that described control unit control
Make the direct current that the dc bus exports 200~1000V.
7. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that the DC/DC conversion
Device is converted to the DC voltage on dc bus using chopped wave technique the low-voltage DC of 12V ± 5%.
8. the charging device based on electric power electric transformer as claimed in claim 1, it is characterised in that the power electronics becomes
Depressor also includes：
S1：Industrial frequency AC carries out ac/dc conversion on primary side electric power electric transformer；
S2：Direct current signal after conversion is modulated to high-frequency signal；
S3：The high-frequency signal is coupled to secondary electric power electric transformer through high frequency transformer and carries out AC/DC conversion；
S4：AC signal after output conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822961.4A CN107453440A (en) | 2017-09-13 | 2017-09-13 | A kind of charging device based on electric power electric transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822961.4A CN107453440A (en) | 2017-09-13 | 2017-09-13 | A kind of charging device based on electric power electric transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107453440A true CN107453440A (en) | 2017-12-08 |
Family
ID=60495631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710822961.4A Pending CN107453440A (en) | 2017-09-13 | 2017-09-13 | A kind of charging device based on electric power electric transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107453440A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291811A (en) * | 2018-09-13 | 2019-02-01 | 国网重庆市电力公司电力科学研究院 | A kind of suspension type charging unit and its charging method |
| CN109560553A (en) * | 2018-12-11 | 2019-04-02 | 华北电力大学 | A kind of switching method of electric power electric transformer low-pressure side switchable power module |
| CN112311034A (en) * | 2019-07-31 | 2021-02-02 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Control system and control method for power electronic transformer of charging station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130257146A1 (en) * | 2012-04-03 | 2013-10-03 | Geraldo Nojima | Electric vehicle supply equipment for electric vehicles |
| CN104852406A (en) * | 2015-04-27 | 2015-08-19 | 湖南大学 | Mixed micro-grid system based on power electronic transformer and power control method of system |
| CN106385193A (en) * | 2016-10-11 | 2017-02-08 | 华北电力大学 | Low voltage DC side topology with switchable power electronic transformer AC and DC capacities |
| CN106602565A (en) * | 2017-02-17 | 2017-04-26 | 四川大尔电气有限责任公司 | Electric vehicle charging station power supply system based on solid-state transformer |
-
2017
- 2017-09-13 CN CN201710822961.4A patent/CN107453440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130257146A1 (en) * | 2012-04-03 | 2013-10-03 | Geraldo Nojima | Electric vehicle supply equipment for electric vehicles |
| CN104852406A (en) * | 2015-04-27 | 2015-08-19 | 湖南大学 | Mixed micro-grid system based on power electronic transformer and power control method of system |
| CN106385193A (en) * | 2016-10-11 | 2017-02-08 | 华北电力大学 | Low voltage DC side topology with switchable power electronic transformer AC and DC capacities |
| CN106602565A (en) * | 2017-02-17 | 2017-04-26 | 四川大尔电气有限责任公司 | Electric vehicle charging station power supply system based on solid-state transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291811A (en) * | 2018-09-13 | 2019-02-01 | 国网重庆市电力公司电力科学研究院 | A kind of suspension type charging unit and its charging method |
| CN109560553A (en) * | 2018-12-11 | 2019-04-02 | 华北电力大学 | A kind of switching method of electric power electric transformer low-pressure side switchable power module |
| CN109560553B (en) * | 2018-12-11 | 2021-11-23 | 华北电力大学 | Switching method of switchable power module at low-voltage side of power electronic transformer |
| CN112311034A (en) * | 2019-07-31 | 2021-02-02 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Control system and control method for power electronic transformer of charging station |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171208 |
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| RJ01 | Rejection of invention patent application after publication |