CN106864279B - A kind of power-off protecting circuit and its working method for electric automobile charging pile - Google Patents
A kind of power-off protecting circuit and its working method for electric automobile charging pile Download PDFInfo
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- CN106864279B CN106864279B CN201510917601.3A CN201510917601A CN106864279B CN 106864279 B CN106864279 B CN 106864279B CN 201510917601 A CN201510917601 A CN 201510917601A CN 106864279 B CN106864279 B CN 106864279B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of power-off protecting circuit and its working method for electric automobile charging pile; wherein; the circuit includes: A.C. contactor U1, collision detection switch E1, E2 ... En, starts switch Es; power input Lin, Nin of the A.C. contactor U1 connects external electrical network input power, and power output end Lout, Nout of the A.C. contactor U1 is connected with the power input of charging pile；The low-voltage power supply end C1 of the A.C. contactor U1 passes sequentially through collision detection switch E1, E2 ... En and is connected with the power output end C4 of A.C. contactor U1；The power input C3 of the A.C. contactor U1 is connected with the low-voltage power supply end C2 of the A.C. contactor U1；The low-voltage power supply end C1 of the A.C. contactor U1 also passes sequentially through collision detection switch E1, E2 ... En, starts switch Es is connected with the low-voltage power supply end C2 of A.C. contactor U1.
Description
Technical field
The present invention relates to intelligent power technical fields, and in particular, to a kind of power-off guarantor for electric automobile charging pile
Protection circuit and its working method.
Background technique
With the consumption of fossil energy, various countries carry out the research of new energy technology already, find new energy resource supply mode,
Advocate energy-saving and emission-reduction.For China, due to the application of new technology, car ownership rises appreciably, and greatly improves life
Convenience, but the problems such as also bring some side effects simultaneously, cause environmental pollution and traffic congestion.Therefore, it is domestic at present
Carry out many kinds of measures gradually to alleviate the problem, investment substantial contribution researches and develops new-energy automobile, and the appropriate Xiang Xinneng in policy
Automobile steering inclination in source encourages people's purchase and uses new-energy automobile.Wherein, Development of Electric Vehicles is especially quick, popularity rate
Also it steps up, thus requires certain charging auxiliary facility, is i.e. charging pile.
Self-service mode can be used in automobile charging, is similar to family's power purchase, but be likely to occur the impaired situation of charging pile,
Such as since driving technology is not consummate enough, collide charging pile and generate electric shock or fire etc., therefore the protection of charging pile is just shown
It obtains increasingly important.It is preferably minimized to lose, needs adequately to protect charging pile, make it have the function automatically powered off
Energy.
It is incomplete for the protection of charging pile in the prior art, touching for charging pile is partially detected by sensor technology
Acceleration or charging pile deviation angle are hit, if being more than the limitation range of setting, controls charging pile power-off, such power-off protection side
Method may bring following problems:
Using acceleration transducer or angular transducer, need to detect and control technology, the complexity of technology using complicated
Property will affect the responsiveness, reliability and follow-up maintenance of system, such as each chip has certain operating temperature range, transfinites
Afterwards cisco unity malfunction is unable to effective protection by chip, equally also has certain requirement to humidity etc.；
Using sensor technology, understands and increase system cost significantly, and a kind of basis of the charging pile as high volume applications
The facility, cost the low more convenient for application.
Summary of the invention
In order to solve the technical problem that charging pile power-off protection poor reliability, cost consumption are big in the prior art, this
Invention proposes a kind of power-off protecting circuit and its working method for electric automobile charging pile.
A kind of power-off protecting circuit for electric automobile charging pile of the invention, comprising:
A.C. contactor U1, collision detection switch E1, E2 ... En, Es, the electricity of the A.C. contactor U1 are started switch
Source input terminal Lin, Nin connect external electrical network input power, power output end Lout, Nout of the A.C. contactor U1 with fill
The power input of electric stake is connected；
The low-voltage power supply end C1 of the A.C. contactor U1 passes sequentially through collision detection switch E1, E2 ... En and hands over
The power output end C4 for flowing contactor U1 is connected；
The power input C3 of the A.C. contactor U1 is connected with the low-voltage power supply end C2 of the A.C. contactor U1；
The low-voltage power supply end C1 of the A.C. contactor U1 also pass sequentially through collision detection switch E1, E2 ... En,
Es is started switch to be connected with the low-voltage power supply end C2 of A.C. contactor U1.
Power-off protecting circuit for electric automobile charging pile of the invention, using universal elements, design method is simple,
It is low in cost, using it is convenient, be quick on the draw, while low to environmental requirement, follow-up maintenance is convenient, is able to satisfy large batch of scene and answers
With easy to promote and utilize；Input power can be disconnected in time when charging pile collides, and ensure that charging pile is electric car
The reliability and safety to charge.
The working method of power-off protecting circuit of the invention, comprising:
Input power is divided into 2 tunnels, the 1st tunnel power supply supply low-voltage alternating-current input power Vc, it is defeated that the power supply of the 2nd tunnel passes through power supply
Enter to hold Lin, Nin and power output end Lout, Nout supply charging pile；
The 2nd tunnel power supply is controlled by the 1st tunnel power supply；
When it is described start switch Es closure when, the 1st tunnel power supply and the 2nd tunnel powered operation, charging pile connect input power open
Beginning work；
When it is described start switch Es disconnect when, the 1st tunnel power supply and the 2nd tunnel power supply works on, charging pile connect input electricity
Source works on.
The working method of power-off protecting circuit for electric automobile charging pile of the invention, uses universal elements, if
Meter method is simple, it is low in cost, using it is convenient, be quick on the draw, while low to environmental requirement, follow-up maintenance is convenient, is able to satisfy big
The field application of batch, it is easy to promote and utilize；Input power can be disconnected in time when charging pile collides, and ensure that charging
Stake is the reliability and safety that electric car charges.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the power-off protecting circuit for electric automobile charging pile of the invention；
Fig. 2 is the input power operation schematic diagram of the power-off protecting circuit for electric automobile charging pile of the invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
In order to solve the technical problem that charging pile power-off protection poor reliability, cost consumption are big in the prior art, this
Invention proposes a kind of power-off protecting circuit and its working method for electric automobile charging pile.Power-off protection electricity of the invention
Road is embedded in the inside of charging pile, can control the input voltage of charging pile, can when charging pile is accidentally hit
It automaticallys cut off the power, to avoid further loss and security risk.The power-off protecting circuit is an individual circuit, peace
Mounted in the front end of charging pile service voltage.
As shown in table 1, simplicity of explanation is carried out to the technical term occurred in the present invention.
Table 1
Embodiment one
The power-off protecting circuit for electric automobile charging pile of the invention is described in detail in the present embodiment:
In power-off protecting circuit shown in Fig. 1, Lin and Nin, that is, external electrical network input voltage, Lout and Nout are U1
Output voltage, i.e. the service voltage of charging pile, E1, E2 ... En is mounted in the switch of the collision detection around charging pile cabinet
(multiple collision detection switch series connection can cut off the power after some or certain collision detections switch are collided), U1 is that exchange connects
Tentaculum.
As shown in Figure 1, the power-off protecting circuit for electric automobile charging pile of the invention, comprising: A.C. contactor U1,
Collision detection switch E1, E2 ... En, Es being started switch, power input Lin, Nin of U1 connects external electrical network input power,
Power output end Lout, Nout of U1 is connected with the power input of charging pile；The low-voltage power supply end C1 of U1 pass sequentially through E1,
E2 ... En is connected with the power output end C4 of U1；The low-voltage power supply end C2 of the power input C3 and U1 of U1 are connected；U1's is low
Pressure feeder ear C1, which also passes sequentially through E1, E2 ... En, starts switch Es and is connected with the low-voltage power supply end C2 of U1.
Low-voltage alternating-current input power Vc, C1, E1, E2 ... En, Es, C2 composition A.C. contactor is connected between C1 and E1 to supply
Electrical circuit A；C1, E1, E2 ... En, C4, C3, C2 form A.C. contactor current supply circuit B.Es is normal open switch, E1, E2 ...
En is normally closed switch.When Es closure, circuit A conducting, Lin is connected to Lout, and Nin is connected to Nout, and C3 is connected to C4, circuit
B is also switched on, and charging pile is started to work；Circuit A works when system starts, and after system starting, Es is disconnected automatically, and circuit A is disconnected
Open, U1 can be powered by circuit B at this time, thus continue to closed state (Lin is connected to Lout, and Nin is connected to Nout,
C3 is connected to C4).
After Es is disconnected, circuit A is disconnected, and circuit B continues to be connected, and charging pile works on.At this time as E1, E2 ... in En
When any one or more disconnections, since main circuit power supply disconnects, circuit B is also disconnected, and A.C. contactor U1 stops working, charging
Stake input power disconnection stops working；After the collision detection of disconnection closes the switch, if Es is closed again, circuit A conducting,
Lin is connected to Lout, and Nin is connected to Nout, and C3 is connected to C4, then circuit B is also switched on, and charging pile restarts work.
Embodiment two
Embodiment two is used below, to the working method of the power-off protecting circuit for electric automobile charging pile of the invention
It is described in detail:
U1 is A.C. contactor (is attracted end high-voltage switch gear and at least needs 3 tunnels), can be controlled by low-voltage alternating-current input power Vc
System, when the both ends C1 and C2 add voltage, electromagnet coil power in U1, electromagnetic actuation, dual pressure control switch closure,
Lin is connected with Lout, and Nin is connected with Nout, and C3 is connected with C4, so that charging pile can connect input power, it is electric car
It charges.
According to power-off protecting circuit as shown in Figure 1, it should be understood by those skilled in the art that: the C1 of A.C. contactor U1 and
If there is voltage Vc, A.C. contactor U1 could work between the both ends C2, Lin is connected to Lout after U1 work, and Nin and Nout connect
Logical, C3 is connected to C4.Before system starting, Lin and Lout are disconnected, and Nin and Nout are disconnected, and C3 and C4 are disconnected, when pressing Es
When, Vc voltage passes through E1 ... En, then so that C2 is powered through circuit A by Es, then there are voltage, ac contactor between C1 and C2 at this time
The electromagnet coil of device U1 is closed, and Lin is connected to Lout, and Nin is connected to Nout, and C3 is connected to C4, then circuit B is also switched on, and is filled
Electric staking leads to input power, starts to work.
The working principle of power-off protecting circuit of the invention are as follows:
As shown in Fig. 2, input power is divided into 2 tunnels, the 1st road supply Vc use (according to actual use situation, it may be necessary to
Transformation), as long as therefore outside have an electricity, Vc output voltage always；2nd road supplies charging pile system, this road is for being connected electrically in Lin
On Nin.Therefore, the power supply on the 2nd tunnel is controlled by the 1st tunnel.Lout and Nout Non voltage output when original state (if there is
Output voltage then enters charging pile by Lout and Nout, is then electric car charging).Es is normal open switch, it acts as
Activation system, can be by pressing Es restarting when system cut-off.E1, E2 ..., En be normally closed switch, also be collision inspection
Survey switch, be distributed in each position of charging pile, effect be when charging pile is by external impact, normally closed switch E1,
E2 ..., En be collided, so that some or certain normally closed switch be made to disconnect, system is fully powered-off, is only manually pressed by Es
When, system can just power again, and then guarantee that system avoids losing without electricity output when accidental impact.
Realize that the control process of power-off protection specifically includes: when system is inactive, the electromagnet of A.C. contactor U1 is disconnected
It opens, Lin and Lout are disconnected, and Nin and Nout disconnection, C3 and C4 are disconnected, charging pile power input non-transformer power supply, in closing
State.After pressing Es, by circuit A, Vc is supplied to low-voltage power supply end (being also the control terminal of A.C. contactor) C1, C2 of U1
The electromagnet coil of electricity, A.C. contactor U1 is attracted, and Lin and Lout are connected, and Nin and Nout are connected, and C3 and C4 are connected, circuit B
It is also switched on, Lout and Nout have power supply supply, and charging pile is started to work, and charge for electric car.
Since Es is normal open switch, switch Es is lifted at this time, circuit A is disconnected, but circuit B (i.e. B1- > C4- > C3- in Fig. 1 >
B2- > B3- > B4- > C2) it connects, therefore, still there is Vc supply between the C1 and C2 of A.C. contactor U1, so the electromagnet of U1
It is always maintained at attracting state, Lin and Lout are connected, and Nin and Nout are connected, and C3 and C4 are connected, and Lout and Nout have power supply supply,
Charging pile can continue to work.That is: after pressing Es, charging pile system works on power, and after hand leaves, Es can be flicked, this
When Vc pass through E1 ... En, through path B1 to C4 (C3 and C4 are in connected state after Es is pressed), through C3 by B2, B3, B4
C2 is finally reached, at this moment still there is voltage between C1 and C2, then U1 can work on, and Lin is connected to Lout, and Nin and Nout connect
Logical, C3 is connected to C4.
When charging pile is collided during the work time, it will cause parts in collision detection switch E1 ... En to be hit
It hits, the main circuit power supply of Vc is caused to disconnect, the both ends C1 and C2 no-voltage, the electromagnet of A.C. contactor U1 disconnects and stops work
Make, Lin and Lout are disconnected, and Nin and Nout are disconnected, and C3 and C4 are disconnected, and circuit A and circuit B are disconnected, the power input of charging pile
End is not turned on external electrical network input power, charging pile power-off, the complete power loss of system, to avoid occurring because of collision further
Loss.If pressing Es again, charging pile system will regain power supply.
Power-off protecting circuit and its working method for electric automobile charging pile of the invention, using universal elements,
Design method is simple, it is low in cost, using it is convenient, be quick on the draw, while low to environmental requirement, follow-up maintenance is convenient, is able to satisfy
Large batch of field application, it is easy to promote and utilize；Input power can be disconnected in time when charging pile collides, and be ensure that and filled
Electric stake is the reliability and safety that electric car charges.
The present invention can there are many various forms of specific embodiments, above by taking Fig. 1-Fig. 2 as an example in conjunction with attached drawing to this hair
Bright technical solution gives an example, this is not meant to that specific example applied by the present invention can only be confined to specific process
Or in example structure, those skilled in the art are it is to be appreciated that specific embodiment presented above is a variety of
Some examples in preferred usage, any embodiment for embodying the claims in the present invention should all be wanted in technical solution of the present invention
Within the scope of asking protection.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of power-off protecting circuit for electric automobile charging pile characterized by comprising
A.C. contactor U1, collision detection switch E1, E2 ... En, Es is started switch, the power supply of the A.C. contactor U1 is defeated
Enter to hold Lin, Nin to connect external electrical network input power, power output end Lout, Nout and charging pile of the A.C. contactor U1
Power input be connected；
The low-voltage power supply end C1 of the A.C. contactor U1 passes sequentially through collision detection switch E1, E2 ... En and connects with exchanging
The power output end C4 of tentaculum U1 is connected；
The power input C3 of the A.C. contactor U1 is connected with the low-voltage power supply end C2 of the A.C. contactor U1；
The low-voltage power supply end C1 of the A.C. contactor U1 also passes sequentially through collision detection switch E1, E2 ... En, starting
Switch Es is connected with the low-voltage power supply end C2 of A.C. contactor U1；
Wherein, low-voltage alternating-current input power Vc is connected between the low-voltage power supply end C1 and the collision detection switch E1；
The low-voltage power supply end C1, collision detection switch E1, E2 ... En, Es, low-voltage power supply end C2 composition exchange are started switch
Contactor current supply circuit A；
The low-voltage power supply end C1, collision detection switch E1, E2 ... En, power output end C4, power input C3, low pressure supply
Electric end C2 forms A.C. contactor current supply circuit B；
The Es that starts switch is normal open switch, and collision detection switch E1, E2 ... En is normally closed switch；
When Es closure, the A.C. contactor current supply circuit A is connected, the power input Lin and the power output end
Lout connection, the power input Nin are connected to the power output end Nout, the power input C3 and the power supply
Output end C4 connection, the A.C. contactor current supply circuit B conducting, the charging pile are started to work；
After Es is disconnected, the A.C. contactor current supply circuit A is disconnected, and the A.C. contactor current supply circuit B continues to be connected, institute
Charging pile is stated to work on；
When any one or more disconnections in collision detection switch E1, E2 ... En, the A.C. contactor is powered back
The road A and A.C. contactor current supply circuit B is disconnected, and the charging pile stops working；
After the collision detection of disconnection closes the switch, when Es closure, the A.C. contactor current supply circuit A and the friendship
Contactor current supply circuit B conducting is flowed, the charging pile restarts work；
Input power is divided into 2 tunnels, the 1st tunnel power supply supply low-voltage alternating-current input power Vc, the power supply of the 2nd tunnel passes through power input
Lin, Nin and power output end Lout, Nout supply charging pile；
The 2nd tunnel power supply is controlled by the 1st tunnel power supply；
When it is described start switch Es closure when, the 1st tunnel power supply and the 2nd tunnel powered operation, charging pile connect input power start work
Make；
When it is described start switch Es disconnect when, the 1st tunnel power supply and the 2nd tunnel power supply works on, charging pile connect input power after
Continuous work；
When any one or more disconnections in collision detection switch E1, E2 ... En, the power supply of the 1st tunnel and the power supply of the 2nd tunnel
It disconnects, A.C. contactor U1 stops working, and charging pile input power disconnects, and stops working；
When it is described start switch Es and be closed again when, the power supply of the 1st tunnel and the 2nd tunnel powered operation, the charging pile connect input electricity
Restart work in source.
2. the power-off protecting circuit according to claim 1 for electric automobile charging pile, which is characterized in that
When it is described start switch Es closure when, A.C. contactor current supply circuit A conducting has voltage between C1 and C2, described
The electromagnetic actuation of A.C. contactor U1, Lin and Lout are connected, and Nin and Nout are connected, and C3 and C4 are connected, then the exchange connects
Tentaculum current supply circuit B conducting, charging pile connect input power and start to work；
When it is described start switch Es and disconnect after, the A.C. contactor current supply circuit A is disconnected, the A.C. contactor current supply circuit
B conducting, there are also voltage, the electromagnetic actuation of the A.C. contactor U1, Lin and Lout to connect between C1 and C2, Nin and Nout
It connects, C3 and C4 are connected, and charging pile connects input power and works on.
3. the power-off protecting circuit according to claim 1 for electric automobile charging pile, which is characterized in that
When any one or more disconnections in collision detection switch E1, E2 ... En, the A.C. contactor is powered back
Road A is disconnected, and the A.C. contactor current supply circuit B is disconnected, and the electromagnet of the A.C. contactor U1 disconnects, and Lin and Lout are disconnected
It opens, Nin and Nout are disconnected, and C3 and C4 are disconnected, and charging pile input power disconnects, and are stopped working；
When it is described start switch Es and be closed again when, the A.C. contactor current supply circuit A conducting has voltage between C1 and C2,
The electromagnetic actuation of the A.C. contactor U1, Lin and Lout are connected, and Nin and Nout are connected, and C3 and C4 are connected, then the friendship
Contactor current supply circuit B conducting is flowed, the charging pile connects input power and restarts work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510917601.3A CN106864279B (en) | 2015-12-10 | 2015-12-10 | A kind of power-off protecting circuit and its working method for electric automobile charging pile |
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| CN201510917601.3A CN106864279B (en) | 2015-12-10 | 2015-12-10 | A kind of power-off protecting circuit and its working method for electric automobile charging pile |
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| CN103797677A (en) * | 2011-08-10 | 2014-05-14 | 北京Abb低压电器有限公司 | A charging pole for EV and a detecting method thereof |
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| CN106864279A (en) | 2017-06-20 |
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