CN109149511A - Residual current protecting system, charging pile and working method - Google Patents
Residual current protecting system, charging pile and working method Download PDFInfo
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- CN109149511A CN109149511A CN201811441868.XA CN201811441868A CN109149511A CN 109149511 A CN109149511 A CN 109149511A CN 201811441868 A CN201811441868 A CN 201811441868A CN 109149511 A CN109149511 A CN 109149511A
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- residual current
- circuit
- charging pile
- processing module
- protection
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 42
- 230000006698 induction Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H02J7/0026—
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- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of residual current protecting system, charging pile and working method, this residual current protecting system includes: residual current acquiring unit, and the protection execution unit being electrical connected with the residual current acquiring unit；Wherein the residual current acquiring unit is suitable for obtaining the residual current data in charging pile circuit, and when monitoring the residual current data beyond preset value, the protection execution unit executes open circuit to the charging pile circuit to carry out circuit protection；The present invention can timely and effectively disconnect circuit by residual current situation in measurement charging pile circuit, realize the function of protection circuit and related controlled electric element.
Description
Technical field
The present invention relates to a kind of charging pile field more particularly to a kind of residual current protecting systems, charging pile and work side
Method.
Background technique
Alternating-current charging pile is required to have residual current protecting function in GB/T 18487.1-2015, in practice,
In addition to alternating-current charging pile, direct-current charging post can also be equipped with residual current protecting function sometimes.Pass through selection band residual current at present
The breaker of protection realizes this function.The method disadvantage is equally obvious, increases the volume of breaker with residual current, and surplus
Aftercurrent breaker price is higher, and installation can not be supported to pour line into, not very convenient in actual use.
Therefore, need to develop a kind of residual current protecting system, charging pile and working method, to solve the above problems.
Summary of the invention
The object of the present invention is to provide a kind of residual current protecting system, charging pile and working methods.
In order to solve the above-mentioned technical problems, the present invention provides a kind of residual current protecting systems comprising: residual current
Acquiring unit, and the protection execution unit being electrical connected with the residual current acquiring unit；Wherein the residual current obtains
Unit is taken to be suitable for obtaining the residual current data in charging pile circuit, when monitoring the residual current data beyond preset value
When, the protection execution unit executes open circuit to the charging pile circuit to carry out circuit protection.
Further, the residual current acquiring unit includes: processing module, and be electrical connected with the processing module
Acquisition module；The acquisition module is suitable for the residual current data in acquisition charging pile circuit in real time, and by the residual current
Data are sent to the processing module；The processing module is suitable for controlling the protection execution unit and executes open circuit protection operation.
Further, the acquisition module includes: the zero sequence transformer suitable for residual current data in induction charging stake circuit
Induction, the zero sequence transformer induction are electrically connected with processing module.
Further, the acquisition module connects processing module by testing terminal.
Further, the protection execution unit includes: the output control circuit being electrical connected with the processing module, and
The execution module being electrical connected with the output control circuit；The processing module is suitable for controlling the output control circuit conducting
To drive the execution module to execute open circuit protection operation.
Further, the execution module includes: the breaker and shunt opening trip coil being serially connected in charging pile circuit；
Wherein the shunt opening trip coil is serially connected in output control circuit；When output control circuit conducting, the shunted exciter tripping line
It encloses electric to control breaker disconnection, cuts off charging pile loop power supply.
On the other hand, the present invention provides a kind of working method of residual current protecting system comprising: it obtains charging pile and returns
Residual current data in road；It chooses whether to carry out open circuit to the charging pile circuit according to the residual current data, complete
Circuit protection.
Further, the working method is suitable for using such as above-mentioned residual current protecting system.
The third aspect, the present invention provide a kind of charging pile comprising: it is separately positioned on major loop, control loop and divides back
Residual current acquiring unit in road, and protection execution unit；Wherein the residual current acquiring unit is suitable for obtaining and lead back
Road, control loop and the residual current data for dividing corresponding circuit in circuit, when monitoring any residual current data beyond corresponding
When preset value, the protection execution unit executes open circuit to corresponding circuit to carry out circuit protection.
Further, the residual current acquiring unit includes: processing module, and be electrical connected with the processing module
Several acquisition modules；The acquisition module is suitable for acquiring residual current data in each circuit in real time respectively, and by residual current
Data are sent to the processing module；The protection execution unit includes: several outputs being electrical connected with the processing module
Control circuit, the breaker being serially connected in each circuit respectively, and the shunt opening being serially connected in corresponding output control circuit respectively are de-
Fastening wire circle；Wherein when the processing module controls output control circuit conducting, shunt opening corresponding with the output control circuit
Tripping coil obtains electric to control respective circuit breakers disconnection, the corresponding loop power supply of cutting.
The invention has the advantages that the present invention passes through residual current situation in measurement charging pile circuit, it can be timely and effective
Disconnection circuit, realize the function of protection circuit and related controlled electric element.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the functional block diagram of residual current protecting system of the present invention.
Fig. 2 is the control principle drawing of residual current protecting system of the present invention.
Fig. 3 is the functional block diagram of the working method of residual current protecting system of the present invention.
Fig. 4 is the functional block diagram of charging pile of the present invention.
In figure: circuit breaker Q F, zero sequence transformer CT, contactor KM, shunt opening trip coil MP, fuse FU1, fuse
FU2。
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
Fig. 1 is the functional block diagram of residual current protecting system of the present invention.
In the present embodiment, as shown in Figure 1, present embodiments providing a kind of residual current protecting system comprising: it is remaining
Electric current acquiring unit, and the protection execution unit being electrical connected with the residual current acquiring unit；The wherein remaining electricity
It flows acquiring unit to be suitable for obtaining the residual current data in charging pile circuit, be preset when monitoring that the residual current data exceed
When value, the protection execution unit executes open circuit to the charging pile circuit to carry out circuit protection.
In the present embodiment, by residual current situation in measurement charging pile circuit, circuit can be timely and effectively disconnected, it is real
Now protect the function of circuit and related controlled electric element.
In order to which the case where residual current, the residual current acquiring unit includes: processing in real-time monitoring charging pile circuit
Module, and the acquisition module being electrical connected with the processing module；The acquisition module is suitable for acquisition charging pile circuit in real time
In residual current data, and the residual current data are sent to the processing module；The processing module is suitable for control
The protection execution unit executes open circuit protection operation.
In the present embodiment, processing module can use but be not limited to STC90C51 processor of single chip computer.
Fig. 2 is the control principle drawing of residual current protecting system of the present invention.
For residual current data in induction charging stake circuit, as shown in Fig. 2, the acquisition module includes: to be suitable for induction
The zero sequence transformer CT induction of residual current data in charging pile circuit, the zero sequence transformer CT induction and processing module are electrical
Connection.
In order to facilitate external detection circuit residual current situation, the acquisition module connects processing mould by testing terminal
Block.
In the present embodiment, acquisition module includes: ammeter, voltmeter and the measuring instrument with measurement voltage and current
Device.
In order to execute open circuit protection operation, the protection execution unit include: be electrical connected with the processing module it is defeated
Control circuit out, and the execution module being electrical connected with the output control circuit；The processing module is suitable for described in control
Output control circuit conducting is to drive the execution module to execute open circuit protection operation.
In the present embodiment, processing module is by the switch of control power supply to control whether output control circuit is connected.
Specifically, the execution module includes: the circuit breaker Q F and shunt opening trip coil being serially connected in charging pile circuit
MP；Wherein the shunt opening trip coil MP is serially connected in output control circuit；When output control circuit conducting, the shunt opening is de-
Fastening wire circle MP obtains electric to control circuit breaker Q F disconnection, cutting charging pile loop power supply.
In the present embodiment, output control circuit can use residual current action relay and shunt opening trip coil MP phase
Connection obtains power loss by control residual current action relay to control shunt opening trip coil MP.
In the present embodiment, as shown in Fig. 2, control principle in order to more preferably show the present embodiment, processing module, output control
The circuit modules such as circuit processed are each provided on master control borad.
In the present embodiment, fuse FU1, fuse FU2 are additionally provided in charging pile circuit, in order to the protection of route
And maintenance.
In the present embodiment, be additionally provided in charging pile circuit contactor KM carry out control connect the load on circuit, and
Carry out low-voltage release guard.
Fig. 3 is the functional block diagram of the working method of residual current protecting system of the present invention.
The present embodiment also provides a kind of working method of residual current protecting system, as shown in figure 3, filling comprising: obtain
Residual current data in electric stake circuit；It chooses whether to break to the charging pile circuit according to the residual current data
Circuit protection is completed on road.
Further, the working method is suitable for using such as above-mentioned residual current protecting system.
Embodiment 2
Fig. 4 is the functional block diagram of charging pile of the present invention.
On the basis of embodiment 1, as shown in figure 4, the present embodiment provides a kind of charging piles comprising: it is separately positioned on
Major loop, control loop and divide residual current acquiring unit in circuit, and protection execution unit；The wherein residual current
Acquiring unit is suitable for obtaining major loop, control loop and the residual current data for dividing corresponding circuit in circuit, any when monitoring
When residual current data exceed corresponding preset value, the protection execution unit executes open circuit to corresponding circuit to carry out circuit guarantor
Shield.
Specifically, the residual current acquiring unit includes: processing module, and be electrical connected with the processing module
Several acquisition modules；The acquisition module is suitable for acquiring residual current data in each circuit in real time respectively, and by residual current
Data are sent to the processing module；The protection execution unit includes: several outputs being electrical connected with the processing module
Control circuit, the circuit breaker Q F being serially connected in each circuit respectively, and the shunt opening being serially connected in corresponding output control circuit respectively
Tripping coil MP；It is corresponding with the output control circuit wherein when the processing module controls output control circuit conducting
Shunt opening trip coil MP obtains electric to control respective circuit breakers QF disconnection, the corresponding loop power supply of cutting.
In the present embodiment, residual current acquiring unit, protection execution unit have illustrated clear in the above-described embodiments.
In conclusion the present invention can timely and effectively disconnect circuit by residual current situation in measurement charging pile circuit,
Realize the function of protection circuit and related controlled electric element；Residual current operating value, using flexible can be set on demand；Pass through
Measurement residual current position may be selected in testing terminal, more accurate effective measurement residual current value；Included safeguard measure, simultaneously
It can external detection circuit residual current situation；Scheme cost of implementation is low, can effectively realize drop originally.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of residual current protecting system characterized by comprising
Residual current acquiring unit, and the protection execution unit being electrical connected with the residual current acquiring unit；Wherein
The residual current acquiring unit is suitable for obtaining the residual current data in charging pile circuit, described remaining electric when monitoring
When flow data exceeds preset value, the protection execution unit executes open circuit to the charging pile circuit to carry out circuit protection.
2. residual current protecting system as described in claim 1, which is characterized in that
The residual current acquiring unit includes: processing module, and the acquisition module being electrical connected with the processing module；
The acquisition module is suitable for the residual current data in acquisition charging pile circuit in real time, and the residual current data are sent out
It send to the processing module；
The processing module is suitable for controlling the protection execution unit and executes open circuit protection operation.
3. residual current protecting system as claimed in claim 2, which is characterized in that
The acquisition module include: suitable in induction charging stake circuit residual current data zero sequence transformer induction, described zero
Sequence is transformer induced to be electrically connected with processing module.
4. residual current protecting system as claimed in claim 2, which is characterized in that
The acquisition module connects processing module by testing terminal.
5. residual current protecting system as claimed in claim 2, which is characterized in that
The protection execution unit includes: the output control circuit being electrical connected with the processing module, and with the output
The execution module that control circuit is electrical connected；
The processing module is suitable for controlling the output control circuit conducting to drive the execution module to execute open circuit protection behaviour
Make.
6. residual current protecting system as claimed in claim 5, which is characterized in that
The execution module includes: the breaker and shunt opening trip coil being serially connected in charging pile circuit；Wherein
The shunt opening trip coil is serially connected in output control circuit；
When output control circuit conducting, the shunt opening trip coil obtains electric to control breaker disconnection, cutting charging pile circuit
Power supply.
7. a kind of working method of residual current protecting system characterized by comprising
Obtain the residual current data in charging pile circuit；
It chooses whether to carry out open circuit to the charging pile circuit according to the residual current data, completes circuit protection.
8. working method as claimed in claim 7, which is characterized in that
The working method is suitable for using residual current protecting system as claimed in any one of claims 1 to 6.
9. a kind of charging pile characterized by comprising
The residual current acquiring unit being separately positioned in major loop, control loop and point circuit, and protection execution unit；Its
In
The residual current acquiring unit is suitable for obtaining major loop, control loop and the residual current number for dividing corresponding circuit in circuit
According to when monitoring any residual current data beyond corresponding preset value, the protection execution unit executes corresponding circuit disconnected
Road is to carry out circuit protection.
10. charging pile according to claim 9, which is characterized in that
The residual current acquiring unit includes: processing module, and several acquisition moulds being electrical connected with the processing module
Block；
The acquisition module is suitable for acquiring the residual current data in each circuit in real time respectively, and residual current data are sent to
The processing module；
The protection execution unit includes: several output control circuits being electrical connected with the processing module, is serially connected in respectively
Breaker in each circuit, and the shunt opening trip coil being serially connected in corresponding output control circuit respectively；Wherein
When the processing module controls output control circuit conducting, shunt opening trip coil corresponding with the output control circuit
It obtains electric to control respective circuit breakers disconnection, the corresponding loop power supply of cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811441868.XA CN109149511A (en) | 2018-11-29 | 2018-11-29 | Residual current protecting system, charging pile and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811441868.XA CN109149511A (en) | 2018-11-29 | 2018-11-29 | Residual current protecting system, charging pile and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109149511A true CN109149511A (en) | 2019-01-04 |
Family
ID=64806238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811441868.XA Pending CN109149511A (en) | 2018-11-29 | 2018-11-29 | Residual current protecting system, charging pile and working method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109149511A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202817688U (en) * | 2012-08-01 | 2013-03-20 | 华立仪表集团股份有限公司 | Power supply protection circuit of electric automobile charging pile and electric automobile charging pile |
| CN106329687A (en) * | 2016-08-31 | 2017-01-11 | 天宝电子（惠州）有限公司 | Portable AC charging pile control circuit |
| CN206790078U (en) * | 2017-05-11 | 2017-12-22 | 无锡华阳科技有限公司 | A kind of remaining leakage current detection means for charging pile equipment |
| CN207884275U (en) * | 2018-08-01 | 2018-09-18 | 深圳汇能新能源科技有限公司 | A kind of electric automobile charging pile Intelligent electric leakage protection circuit |
-
2018
- 2018-11-29 CN CN201811441868.XA patent/CN109149511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202817688U (en) * | 2012-08-01 | 2013-03-20 | 华立仪表集团股份有限公司 | Power supply protection circuit of electric automobile charging pile and electric automobile charging pile |
| CN106329687A (en) * | 2016-08-31 | 2017-01-11 | 天宝电子（惠州）有限公司 | Portable AC charging pile control circuit |
| CN206790078U (en) * | 2017-05-11 | 2017-12-22 | 无锡华阳科技有限公司 | A kind of remaining leakage current detection means for charging pile equipment |
| CN207884275U (en) * | 2018-08-01 | 2018-09-18 | 深圳汇能新能源科技有限公司 | A kind of electric automobile charging pile Intelligent electric leakage protection circuit |
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Application publication date: 20190104 |
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