CN209224985U - A kind of charging device of electric automobile - Google Patents
A kind of charging device of electric automobile Download PDFInfo
- Publication number
- CN209224985U CN209224985U CN201822209020.6U CN201822209020U CN209224985U CN 209224985 U CN209224985 U CN 209224985U CN 201822209020 U CN201822209020 U CN 201822209020U CN 209224985 U CN209224985 U CN 209224985U
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- China
- Prior art keywords
- power supply
- charging
- charging pile
- terminals
- pwm signal
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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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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of charging device of electric automobile, including charging pile, battery management system and Vehicular charger, the Vehicular charger has ac power supply terminal L/N, pwm signal receiving end, DC power supply terminals and CAN bus terminals, the ac power supply terminal L/N is connected by power supply line with the power output end of charging pile, pwm signal receiving end is connected by signal wire with charging pile, DC power supply terminals are connected by power supply line with the charging interface of battery management system, CAN bus terminals are connected by CAN bus with the communication interface of battery management system.The Vehicular charger of the utility model is capable of the duty ratio size of real-time detection CP signal, and according to the request charging current value of the BMS received, directly exchanged the size of current limitation of side in the normal range, the control response efficiency for improving ac-side current prevents exchange side from overcurrent risk occur.
Description
[technical field]
The utility model relates to electric vehicle engineering field more particularly to a kind of charging device of electric automobile.
[background technique]
Support energetically with country to new energy, New-energy electric vehicle is constantly universal, the order of magnitude year by year occurs and passs
The trend of increasing, auxiliary facility of the charging pile as New-energy electric vehicle basis, interconnecting between electric car seem
It is more and more important.
For electric car when being charged, charging pile can inform electric car most by pwm signal (duty cycle signals)
Charging current available greatly.Currently, vehicle detects PWM duty cycle signal by BMS (battery management system) or entire car controller, when
When BMS detects CP duty cycle signals, the fan-out capability of alternating-current charging pile is calculated, BMS passes through CAN bus to Vehicular charger
It requests charging current (direct current), Vehicular charger feeds back the real time charging electric current (exchange) at received exchange end to BMS again.
But this in such a way that control charger exports electric current come Indirect method exchange side input current, exchange end current-responsive speed
Degree is slow, if DC terminal current detecting is abnormal, can there is the risk of exchange side overcurrent.
[summary of the invention]
In view of this, the present invention provides a kind of charging device of electric automobile, vehicle-mounted in the prior art to solve
The problem of exchange survey of charger is easy to appear overcurrent risk.
A kind of charging device of electric automobile, comprising:
Charging pile；
Battery management system；
Vehicular charger, the Vehicular charger have ac power supply terminal L/N, pwm signal receiving end, DC power supply
Terminals and CAN bus terminals；
Wherein, the ac power supply terminal L/N is connected by power supply line with the power output end of the charging pile, institute
It states pwm signal receiving end and is connected by signal wire with the charging pile, the DC power supply terminals pass through power supply line and institute
The charging interface for stating battery management system is connected, and the CAN bus terminals pass through CAN bus and the battery management system
Communication interface be connected.
Preferably, photoelectrical coupler is equipped in the charging pile, the pwm signal that the charging pile issues is through the photoelectricity coupling
The isolation of clutch is transmitted to the pwm signal receiving end of Vehicular charger by the signal wire.
Preferably, the pwm signal receiving end includes connection confirmation terminals CC and control confirmation terminals CP.
Preferably, the controller of the Vehicular charger is using the single-chip microcontroller with PWM pin.
Preferably, the single-chip microcontroller is ARM single-chip microcontroller.
The beneficial effects of the utility model are: the utility model structure is simple, believed by the way that PWM is arranged on Vehicular charger
Number receiving end, connect pwm signal receiving end directly with charging pile, such Vehicular charger can real-time detection CP signal duty
Than size, and according to the request charging current value of the BMS received, the size of current for directly being exchanged side is limited in normal model
In enclosing, the control response efficiency of ac-side current is improved, improves speed control, prevents exchange side from overcurrent risk occur.
[Detailed description of the invention]
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is the structural schematic diagram of the utility model.
[specific embodiment]
In order to better understand the technical solution of the utility model, the utility model embodiment is carried out with reference to the accompanying drawing
Detailed description.
It will be appreciated that described embodiment is only a part of the embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts
The all other embodiment obtained, fall within the protection scope of the utility model.
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.In retouching for the application
In stating unless specifically defined or limited otherwise, term " first ", " second " are only used for the purpose of description, and should not be understood as
Indication or suggestion relative importance；Unless otherwise prescribed or explanation, term " multiple " refer to two or more；Term is " even
Connect ", " fixation " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection or one
It connects to body, or electrical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, it is to be understood that "upper", "lower" described in the embodiment of the present application, "left", "right"
The equal nouns of locality are described with angle shown in the drawings, should not be construed as the restriction to the embodiment of the present application.In addition,
In context, it is also necessary to which understanding can not only when mentioning an element and being connected to another element "upper" or "lower"
It is enough connected directly between another element "upper" or "lower", another element "upper" can also be indirectly coupled to by intermediary element
Or "lower".
The utility model embodiment provides a kind of charging device of electric automobile, and the Vehicular charger of the device can real-time detection
The duty ratio size of CP signal, and according to the request charging current value of the BMS received, directly exchanged the size of current of side
Limitation in the normal range, improves the control response efficiency of ac-side current, improves speed control, prevents exchange side from occurring
Flow risk.
It referring to Fig.1, is the schematic diagram of the charging device of electric automobile of the utility model.As shown, the electronic vapour
Vehicle charging unit includes charging pile, Vehicular charger and battery management system (BMS).
Specifically, charging pile is the energy supply station of electric car, and input terminal is directly connected to AC network, power supply
Output end is connected with Vehicular charger.The control unit of charging pile issues pwm signal, to inform its maximum allowable available charging
Electric current.
Vehicular charger is fixed on electric car, for the AC power source of charging pile to be converted to battery management
Direct current required by system (BMS) is powered to battery management system.Vehicular charger have ac power supply terminal L/N,
Pwm signal receiving end, DC power supply terminals and CAN bus terminals, in the present embodiment, pwm signal receiving end includes connecting
Meet confirmation terminals CC and control confirmation terminals CP.
Ac power supply terminal L/N is connected by power supply line with the power output end of charging pile.Pwm signal receiving end is logical
Signal wire is crossed to be connected with charging pile, i.e. connection confirmation terminals CC and control confirmation terminals CP are connected with charging pile,
The duty ratio size of pwm signal (CP signal) for the output of real-time detection charging pile.DC power supply terminals pass through power supply line
It is connected with the charging interface of battery management system, CAN bus terminals are connect by the communication of CAN bus and battery management system
Mouth is connected.
In the present embodiment, the controller of Vehicular charger is using the single-chip microcontroller with PWM pin, specifically, can adopt
With ARM single-chip microcontroller.By signal wire, by the pwm signal output end of the PWM control pin of the single-chip microcontroller and charging pile, (CP signal is defeated
Outlet) be connected, Vehicular charger can real-time detection charging pile CP signal duty ratio size.
In actual use, the duty ratio size of the CP signal of Vehicular charger real-time detection charging pile output, it is vehicle-mounted
Charger according to CP signal magnitude and the request charging current value received from battery management system, (ask by battery management system
Seeking charging current value is the maximum value of battery receptacle ability), the size of current for directly being exchanged side limits in the normal range,
The control response efficiency of ac-side current is improved, speed control is improved, prevents exchange side from overcurrent risk occur.
In order to avoid the high pressure that charging pile inside occurs interferes CP signal, photoelectric coupling can be set in charging pile
Device.The pwm signal (CP signal) that charging pile issues passes through the isolation of photoelectrical coupler, is transmitted to Vehicular charger by signal wire
Pwm signal receiving end Vehicular charger is damaged so that high pressure inside charging pile be avoided to introduce signal wire.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model
Within the scope of protection.
Claims (5)
1. a kind of charging device of electric automobile characterized by comprising
Charging pile；
Battery management system；
Vehicular charger, the Vehicular charger include ac power supply terminal L/N, pwm signal receiving end, DC power supply wiring
End and CAN bus terminals；
Wherein, the ac power supply terminal L/N is connected by power supply line with the power output end of the charging pile；
The pwm signal receiving end is connected by signal wire with the charging pile；
The DC power supply terminals are connected by power supply line with the charging interface of the battery management system；
The CAN bus terminals are connected by CAN bus with the communication interface of the battery management system.
2. charging device of electric automobile according to claim 1, which is characterized in that be equipped with photoelectric coupling in the charging pile
Device, isolation of the pwm signal through the photoelectrical coupler that the charging pile issues, is transmitted to vehicle-mounted charge by the signal wire
The pwm signal receiving end of machine.
3. charging device of electric automobile according to claim 2, which is characterized in that the pwm signal receiving end includes connecting
Meet confirmation terminals CC and control confirmation terminals CP.
4. charging device of electric automobile according to claim 1, which is characterized in that the controller of the Vehicular charger is adopted
It is the single-chip microcontroller with PWM pin.
5. charging device of electric automobile according to claim 4, which is characterized in that the single-chip microcontroller is ARM single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822209020.6U CN209224985U (en) | 2018-12-27 | 2018-12-27 | A kind of charging device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822209020.6U CN209224985U (en) | 2018-12-27 | 2018-12-27 | A kind of charging device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209224985U true CN209224985U (en) | 2019-08-09 |
Family
ID=67509285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822209020.6U Active CN209224985U (en) | 2018-12-27 | 2018-12-27 | A kind of charging device of electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893781A (en) * | 2018-09-12 | 2020-03-20 | 北汽福田汽车股份有限公司 | Charging pile, vehicle charging method and device, electric vehicle and charging system |
-
2018
- 2018-12-27 CN CN201822209020.6U patent/CN209224985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893781A (en) * | 2018-09-12 | 2020-03-20 | 北汽福田汽车股份有限公司 | Charging pile, vehicle charging method and device, electric vehicle and charging system |
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