CN105656089B - A kind of electric automobile is without electric pre-connection charging cable interface - Google Patents
A kind of electric automobile is without electric pre-connection charging cable interface Download PDFInfo
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- CN105656089B CN105656089B CN201410626624.4A CN201410626624A CN105656089B CN 105656089 B CN105656089 B CN 105656089B CN 201410626624 A CN201410626624 A CN 201410626624A CN 105656089 B CN105656089 B CN 105656089B
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- electric
- charging cable
- charging
- cable interface
- electric automobile
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Abstract
The invention discloses a kind of electric automobile without electric pre-connection charging cable interface, when not coupled with vehicle-mounted charge socket, the forceful electric power output cable of charging cable interface and matched charging cable, vulnerabilities scan cable etc. are without electricity, when only charging cable interface couples completely with vehicle-mounted charge socket, battery charge controller receives the charging signals that photoelectrical coupler is sent, just allow charging gun charging socket to possess charged condition, and start charging electric vehicle program therewith.Thus, the present invention will not caused by user's improper use or by situations such as external force collision Danger Electric shock risk.Also, even if charging cable interface is immersed in the water, because charging plug and charging cable are entirely without electricity, short circuit will not also occur for charging plug, the accidents such as charging cable would not also generate heat, burn.
Description
Technical field
The present invention relates to charging electric vehicle cable interface technical field, more particularly to a kind of automobile to charge without electric pre-connection
Cable interface.
Background technology
The existing electric automobile in market is typically charged using charging pile.As shown in figure 1, charging pile is independent charging
System, battery charge controller, charging inlet are installed in charging pile.The premise that charging pile charges normal is that charging pile must band
Electricity, to be powered for battery charge controller.
Charging process is：Charging pile is accessed in existing distribution system by distribution cable, at charging pile, battery charge controller
In electriferous state；In charging inlet insertion vehicle-mounted charge socket, battery charge controller starts charging detection, and battery charge controller leads to
Cross and judge magnitude of voltage between charging cable interface and vehicle-mounted charge socket, to confirm whether charging gun charging inlet is completed and car
The coupling of charging socket is carried, to start charging procedure；Charging procedure starts, and charge circuit is connected, and starts to fill for electric automobile
Electricity.Wherein, AC charging control device is judged by judging the magnitude of voltage of charging connection confirmation cable CC interfaces；Direct current fills
Controller for electric consumption is then judged by judging the magnitude of voltage of charging gun charging connection confirmation cable CC1 interfaces and CC2 interfaces.Parking
To meet electric automobile real time charging demand, charging pile and its control circuit are in real-time electriferous state, user's improper use for field
Or situations such as being broken down by external force collision or distribution loop, not only result in electric shock risk, be also easy to occur cable short circuit,
Heating, burning etc. accident, and if charging pile is influenceed by rainwater, the accidents such as short circuit will occur for charging pile control loop, influence to fill
Power station normal work.
The content of the invention
The present invention proposes a kind of electric automobile without electric pre-connection charging cable interface, and it is required to solve charging cable interface
Electrical Safety problem caused by powered in real time.
Technical scheme provided by the invention is that a kind of electric automobile is without electric pre-connection charging cable interface, including power end
Sub- L, N, ground terminal PE, charging connection confirms that terminal CC connects with charge control and confirms terminal CP, and the power supply terminal passes through
Normal open switch device K connects with power supply, and the ground terminal PE ground connection, the charging cable interface fills including charge control
Put, current sensing means OC, first switch device KA1 and second switch device KA2, the second switch device KA2 are hilted broadsword
Commutator, second switch device KA2 moved end are grounded by charge and discharge capacitance C, and the first of the second switch device is motionless
End connect with low-voltage dc power supply, second not moved end connect with one end of current sensing means OC induction parts；The current detecting
The other end of device OC induction parts is connected by first switch device KA1 with one of terminal of charging cable interface, charging
When cable interface is connected with electric automobile, the charge and discharge capacitance C, current sensing means OC induction part and electric automobile are formed
Discharge loop；The operating member of the current sensing means OC connects with battery charge controller, and battery charge controller control first is opened
Close device KA1, second switch device KA2 action.
Electric automobile as described above leads to without electric pre-connection charging cable interface, the induction part of the current sensing means OC
Cross first switch device KA1 and be connected with charge control and confirm that terminal CP connects.
For electric automobile as described above without electric pre-connection charging cable interface, the first switch device KA1 is that hilted broadsword is double
Throw switch, the moved end of the first switch device KA1 is connected with charge control confirms that terminal CP connects, the first not moved end and electric current
The other end of detection means OC induction parts connects, second not moved end connect with battery charge controller.
Electric automobile as described above is without electric pre-connection charging cable interface, the charge and discharge capacitance C, current sensing means
Current limit circuit is set on the discharge loop that OC induction part is formed with electric automobile.
Electric automobile as described above without electric pre-connection charging cable interface, the current sensing means OC induction parts it is another
One end by current-limiting circuit and first switch device KA1 first not moved end connect.
Electric automobile as described above leads to without electric pre-connection charging cable interface, the induction part of the current sensing means OC
First switch device KA1 is crossed with power supply terminal L to connect.
Electric automobile as described above passes through the 4th switch without electric pre-connection charging cable interface, the charge and discharge capacitance C
Device KA4 connects with power supply terminal N.
Electric automobile as described above is without electric pre-connection charging cable interface, the charge and discharge capacitance C, current sensing means
Current limit circuit is set on the discharge loop that OC induction part is formed with electric automobile.
Electric automobile as described above without electric pre-connection charging cable interface, the current sensing means OC induction parts it is another
One end is connected by current-limiting circuit and first switch device KA1's.
Compared with prior art, advantages of the present invention and positive performance are：It is proposed by the present invention electric without the charging of electric pre-connection
When cable interface does not couple with vehicle-mounted charge socket, the forceful electric power output cable of charging cable interface and matched charging cable,
Vulnerabilities scan cable etc. is without electricity, when only charging cable interface couples completely with vehicle-mounted charge socket, charge control dress
Put and receive the charging signals that photoelectrical coupler is sent, just allow charging gun charging socket to possess charged condition, and start electricity therewith
Electrical automobile charging procedure.Thus, the present invention will not caused by user's improper use or by situations such as external force collision Danger Electric shock risk.
Also, even if charging cable interface is immersed in the water, because charging plug and charging cable will not also be sent out entirely without electricity, charging plug
It is raw short-circuit, the accidents such as charging cable would not also generate heat, burn.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is charging pile charging principle figure.
Fig. 2 is chamber type charging station charging principle figure.
Charging electric vehicle cable interface couples with electric automobile when Fig. 3 is 1 uncharged state of the specific embodiment of the invention
Schematic diagram.
Charging electric vehicle cable interface couples with electric automobile when Fig. 4 is 2 uncharged state of the specific embodiment of the invention
Schematic diagram.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The present invention both can be applied to the charging pile shown in Fig. 1, can also be applied to the chamber type charging station shown in Fig. 2.
Specific embodiment 1：
As shown in figure 3, a kind of electric automobile that the present embodiment proposes is without electric pre-connection charging cable interface, including charging control
Device processed, current sensing means OC, first switch device KA1, second switch device KA2, charge and discharge capacitance C, low-voltage DC
Source and terminal.
Terminal includes power supply terminal L, N, ground terminal PE, and charging connection confirms that terminal CC connects with charge control and confirms end
Sub- CP.Power supply terminal L, N are connected by normal open switch device K with live wire, ground wire；Ground terminal PE is grounded.
In the present embodiment, first switch device KA1, second switch device KA2 are relay KA operating member, are that hilted broadsword is double
Throw switch, the two groups of contacts of KA1 and KA2 of relay KA with interlocking.Second switch device KA2 moved end passes through charge and discharge capacitance C
Ground connection, second switch device KA2 first not moved end connect with low-voltage dc power supply, the second not moved end and current sensing means OC
One end of induction part connects, and when charging cable interface does not connect with electric automobile, second switch device KA2 moved end and second is not
Moved end connects.The charging that the other end of current sensing means OC induction parts passes through first switch device KA1 and charging cable interface
Control connection confirms that terminal CP terminals connect, and first switch device KA1 moved end is connected with charge control confirms terminal CP terminals
Connect, first not moved end connect with the other end of current sensing means OC induction parts, the second not moved end and battery charge controller phase
Connect, when charging cable interface does not connect with electric automobile, first switch device KA1 moved end with first not moved end connect.
Thus, when charging cable interface is connected with electric automobile, charge and discharge capacitance C, current sensing means OC sensing
Portion forms discharge loop with electric automobile.Because current sensing means OC operating member connects with battery charge controller, electric current inspection
The induction part for surveying device OC forms induced-current, current sensing means OC operating member action, to charge control in discharge loop
Device transmits charging signals.Battery charge controller control first switch device KA1, second switch device KA2 action.
Preferably, on the discharge loop that charge and discharge capacitance C, current sensing means OC induction part are formed with electric automobile
Current limit circuit is set, it is preferred to use current-limiting resistance R, for controlling the size of discharge loop electric current.Current sensing means OC feels
Answer the other end in portion by current-limiting resistance R and first switch device KA1 first not moved end connect.
Current sensing means OC can use photoelectrical coupler, current relay, hall device etc., can realize this
The purpose of invention, within protection scope of the present invention.
The implementation process of the present embodiment is specifically described below：
The state of each component that charging cable interface is not connected with electronic vehicle attitude is:
Normally-closed contact closure in interlocking contact KA1 in relay KA, normally opened contact are opened, the normally-closed contact in KA2
Closure, normally opened contact are opened, and capacitor C is in open-circuit condition, and photoelectrical coupler OC diode circuit no current flows through.
During charging cable interface connecting electric automobile interface,
Charge control connection confirms that terminal CP is connected with vehicle-mounted charge socket, and charge control confirms that cable CP passes through resistance
R6 is connected with electric car body ground connection, and charge and discharge capacitance C is discharged by CP cables, and photoelectrical coupler OC, which is collected, to be put
After electric current, the signal that plug connected is sent to battery charge controller.
Battery charge controller is received after the vehicle that photoelectrical coupler OC is sent connected signal, order is sent, by KA KA1
In normally opened contact closure, normally-closed contact open, be thus disconnected capacitor C discharge loop, connected charge control dress
The CP charge control cables with electric automobile vehicle control device to be put, KA2 normally opened contact is closed, normally-closed contact is opened, this
Sample has been switched on capacitor C charge circuits, and safe voltage charges for capacitor C, is easy to detect energy storage next time.
Battery charge controller starts normal charge control journey after CP connects with electric automobile vehicle control device
Sequence, closure switch device K, now charging cable execution charging electric vehicle program, complete charging electric vehicle work.
Before charging cable interface is connected with electric automobile, charging cable interface and charging cable do not have continual and steady
Power supply exports, and Danger Electric shock risk will not occur for user.
Because the capacitor C newly increased rated voltage is only 12V, and capacitance energy storage electricity is seldom, and R and R6, which is formed, to discharge
During loop, electric current is only 5mA, completely without Danger Electric shock risk.
Specific embodiment 2：
As shown in Fig. 2 a kind of electric automobile that the present embodiment proposes is without electric pre-connection charging cable interface, including charging control
Device processed, current sensing means OC, first switch device KA1, second switch device KA2, the 3rd switching device KA3, the 4th open
Close device KA4, charge and discharge capacitance C, low-voltage dc power supply and terminal.
Terminal includes power supply terminal L, N, ground terminal PE, and charging connection confirms that terminal CC connects with charge control and confirms end
Sub- CP.Power supply terminal L, N are connected by normal open switch device K with live wire, ground wire；Ground terminal PE is grounded.
In the present embodiment, first switch device KA1, second switch device KA2, the 3rd switching device KA3, the 4th switch dress
KA4 is put, is relay KA operating member, relay KA bands KA1, KA2, KA3, KA4 tetra- groups of contacts, first switch device KA1, the
Three switching device KA3, the 4th switching device KA4 are single-pole single-throw switch (SPST), and second switch device KA2 is single-pole double-throw switch (SPDT).The
Two switching device KA2 moved end is connected to power supply terminal N, second switch dress by charge and discharge capacitance C, the 4th switching device KA4
Put the first of KA2 not moved end connect with low-voltage dc power supply, the second not moved end and one end phase of current sensing means OC induction parts
Connect, when charging cable interface does not connect with electric automobile, second switch device KA2 moved end with second not moved end connect.Electric current
The other end of detection means OC induction parts is connected by first switch device KA1 with power supply terminal L, is normally opened contact.
Thus, when charging cable interface is connected with electric automobile, charge and discharge capacitance C, current sensing means OC sensing
The Vehicular charger of portion and electric automobile forms discharge loop.Due to current sensing means OC operating member and battery charge controller
Connecting, current sensing means OC induction part forms induced-current in discharge loop, and current sensing means OC operating member acts,
Charging signals are transmitted to battery charge controller.Battery charge controller control first switch device KA1, second switch device KA2
Action.
Charge and discharge capacitance C is connected by the 4th switching device KA4 with power supply terminal N, for charge and discharge capacitance C discharge and recharges
Switching.
Preferably, on the discharge loop that charge and discharge capacitance C, current sensing means OC induction part are formed with electric automobile
Current limit circuit is set, it is preferred to use current-limiting resistance R, for controlling the size of discharge loop electric current.Current sensing means OC feels
The other end in portion is answered to connect by current-limiting resistance R with first switch device KA1.
Current sensing means OC can use photoelectrical coupler, current relay, hall device etc., can realize this
The purpose of invention, within protection scope of the present invention.
The implementation process of the present embodiment is specifically described below：
The state of each component that charging cable interface is not connected with electronic vehicle attitude is:
KA1 contact closures in relay KA, the normally-closed contact closure in KA2, normally opened contact are opened, and capacitor C is in and opened
Line state, photoelectrical coupler OC diode circuit no current flow through.
During charging cable interface connecting electric automobile interface,
Power supply terminal L, N are connected by charging cable interface with vehicle-mounted charge socket, and charging cable interface fills with vehicle-mounted
Electrical socket coupling is intact, then capacitor C both ends are connected through electric automobile and vehicle-mounted charger, passes through live wire L and the charging zero of charging
Two cables of line N are discharged, and after photoelectrical coupler OC collects discharge current, are sent plug to battery charge controller and have been connected
Signal.
Battery charge controller is received after the vehicle that photoelectrical coupler is sent connected signal, sends order, by KA KA1 and
KA4 normally-closed contacts disconnect, and are disconnected charge and discharge capacitance C discharge loop, KA3 normally opened contacts are closed, and connect charge control and connect
Connect and confirm cable CP, KA2 normally-closed contact is opened, normally opened contact closure, be disconnected charge and discharge capacitance C discharge loop, connect
Capacitor C charge circuit is led to, and safe voltage charges for capacitor C, is easy to detect energy storage next time.
After battery charge controller connects with electric automobile vehicle control device, that is, start normal charging control program, close
Normally opened contact S1 is closed, starts charge control and confirms CP, further, main contactor K is closed, performs charging electric vehicle program,
Complete charging electric vehicle work.
Before charging cable interface is connected with electric automobile, charging cable interface and charging cable are without continual and steady electricity
Source exports, and Danger Electric shock risk will not occur for user.
Because the capacitor C newly increased rated voltage is only 12V, and capacitance energy storage electricity is seldom, R and Vehicular charger
When internal equivalent impedance forms loop, electric current is only 5mA, completely without Danger Electric shock risk.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. a kind of electric automobile is without electric pre-connection charging cable interface, including power supply terminal L, N, ground terminal PE, charging connection
Confirm that terminal CC connect with charge control and confirm terminal CP, it is characterised in that the power supply terminal by normal open switch device K and
Power supply connects, and the ground terminal PE ground connection, the charging cable interface includes battery charge controller, current sensing means
OC, first switch device KA1 and second switch device KA2, the second switch device KA2 is single-pole double-throw switch (SPDT), and second opens
The moved end for closing device KA2 is grounded by charge and discharge capacitance C, the first not moved end and low-voltage dc power supply of the second switch device
Connect, second not moved end connect with one end of current sensing means OC induction parts；The current sensing means OC induction parts it is another
One end is connected by first switch device KA1 with one of terminal of charging cable interface, charging cable interface and electronic vapour
When car connects, the charge and discharge capacitance C, current sensing means OC induction part and electric automobile form discharge loop；The electricity
Flow detection device OC operating member connects with battery charge controller, and battery charge controller control first switch device KA1, second open
Close device KA2 action.
2. electric automobile according to claim 1 is without electric pre-connection charging cable interface, it is characterised in that the electric current inspection
Survey device OC induction part is connected by first switch device KA1 with charge control confirms that terminal CP connects.
3. electric automobile according to claim 1 is without electric pre-connection charging cable interface, it is characterised in that described first opens
It is single-pole double-throw switch (SPDT) to close device KA1, and the moved end of the first switch device KA1 is connected with charge control confirms terminal CP phases
Connect, first not moved end connect with the other end of current sensing means OC induction parts, second not moved end connect with battery charge controller.
4. electric automobile according to claim 3 is without electric pre-connection charging cable interface, it is characterised in that the discharge and recharge
Current limit circuit is set on the discharge loop that electric capacity C, current sensing means OC induction part are formed with electric automobile.
5. electric automobile according to claim 4 is without electric pre-connection charging cable interface, it is characterised in that the electric current inspection
Survey the other ends of device OC induction parts by current-limiting circuit and first switch device KA1 first not moved end connect.
6. electric automobile according to claim 1 is without electric pre-connection charging cable interface, it is characterised in that the electric current inspection
The induction part for surveying device OC is connected by first switch device KA1 with power supply terminal L.
7. electric automobile according to claim 6 is without electric pre-connection charging cable interface, it is characterised in that the discharge and recharge
Electric capacity C is connected by the 4th switching device KA4 with power supply terminal N.
8. the electric automobile according to claim 6 or 7 is without electric pre-connection charging cable interface, it is characterised in that described to fill
Current limit circuit is set on the discharge loop that discharge capacity C, current sensing means OC induction part are formed with electric automobile.
9. electric automobile according to claim 8 is without electric pre-connection charging cable interface, it is characterised in that the electric current inspection
Survey the other end the connecting by current limliting electricity circuit and first switch device KA1 of device OC induction parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410626624.4A CN105656089B (en) | 2014-11-10 | 2014-11-10 | A kind of electric automobile is without electric pre-connection charging cable interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410626624.4A CN105656089B (en) | 2014-11-10 | 2014-11-10 | A kind of electric automobile is without electric pre-connection charging cable interface |
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| CN105656089A CN105656089A (en) | 2016-06-08 |
| CN105656089B true CN105656089B (en) | 2017-12-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106696734B (en) * | 2016-12-17 | 2019-05-17 | 广州益充新能源有限公司 | Electric automobile charging pile, electric car and electric car charging method |
| CN107196129A (en) * | 2017-07-06 | 2017-09-22 | 深圳市禾沐微科技有限公司 | CA cable assembly, power supply unit and electric automobile |
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| CN102904315A (en) * | 2012-10-26 | 2013-01-30 | 力帆实业(集团)股份有限公司 | High-safety intelligent charging system with active driving anti-collision function and control method thereof |
| CN104037840A (en) * | 2012-07-31 | 2014-09-10 | 华立仪表集团股份有限公司 | Charging control guiding module used for electric-vehicle AC charging post |
| CN203840041U (en) * | 2013-12-12 | 2014-09-17 | 天津市亚博科技发展有限公司 | Off-board charger for electric automobile |
| CN204118827U (en) * | 2014-11-10 | 2015-01-21 | 青岛特锐德电气股份有限公司 | A kind of electric automobile is without electric pre-connection charging cable interface |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130082541A (en) * | 2011-12-08 | 2013-07-22 | 한국전자통신연구원 | Automatic charging apparatus and method for driving electric car |
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2014
- 2014-11-10 CN CN201410626624.4A patent/CN105656089B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037840A (en) * | 2012-07-31 | 2014-09-10 | 华立仪表集团股份有限公司 | Charging control guiding module used for electric-vehicle AC charging post |
| CN102904315A (en) * | 2012-10-26 | 2013-01-30 | 力帆实业(集团)股份有限公司 | High-safety intelligent charging system with active driving anti-collision function and control method thereof |
| CN203840041U (en) * | 2013-12-12 | 2014-09-17 | 天津市亚博科技发展有限公司 | Off-board charger for electric automobile |
| CN204118827U (en) * | 2014-11-10 | 2015-01-21 | 青岛特锐德电气股份有限公司 | A kind of electric automobile is without electric pre-connection charging cable interface |
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Effective date of registration: 20191211 Address after: 266104 Qingdao huahuize patent agency (general partnership) Patentee after: Qingdao teltel New Energy Technology Co., Ltd Address before: 266104 Shandong Province, Qingdao city Laoshan District Songling Road No. 336 Patentee before: Qingdao Tgood Electric Co., Ltd. |
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