CN207908642U - A kind of AC relay adhesion detection circuit - Google Patents
A kind of AC relay adhesion detection circuit Download PDFInfo
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- CN207908642U CN207908642U CN201820148190.5U CN201820148190U CN207908642U CN 207908642 U CN207908642 U CN 207908642U CN 201820148190 U CN201820148190 U CN 201820148190U CN 207908642 U CN207908642 U CN 207908642U
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Abstract
The utility model is related to charging pile technical fields,Especially a kind of AC relay adhesion detection circuit,Including AC relay,First capacitance,Second capacitance,Third capacitance,Resistance,Zener diode,Diode,AD output ends,One end of the first normally opened contact the connection firewire and the first capacitance of AC relay,One end of second normally opened contact zero curve and the second capacitance of AC relay,The other end of first capacitance is connect with the other end of the second capacitance,Resistance is grounded after connecting the first capacitance and the tie point of the second capacitance,The anode tap of zener diode is grounded,Cathode terminal is connected on the tie point of the first capacitance and the second capacitance,The cathode terminal of the positive terminal connection zener diode of diode,The negative pole end of zener diode connects AD output ends,The negative pole end of one end connection diode of third capacitance,The other end of third capacitance is grounded,The utility model is not in the case where influencing to exchange the pressure resistance between relay contact over the ground,Detect relay whether adhesion.
Description
Technical field
The utility model is related to charging pile technical field, specific field is a kind of AC relay adhesion detection circuit.
Background technology
Electric vehicle alternating-current charging device internal relay majority does not have auxiliary contact, cannot be examined in time after relay adhesion
The case where surveying, charging circuit caused to damage.
Utility model content
The purpose of this utility model is to provide a kind of AC relay adhesion detection circuits, to solve prior art relaying
The problem of the case where cannot in time detecting after electric appliance adhesion, charging circuit is caused to damage.
To achieve the above object, the utility model provides the following technical solutions：A kind of AC relay adhesion detection circuit,
Including AC relay, the first capacitance, the second capacitance, third capacitance, resistance, zener diode, diode, AD output ends, institute
The coil for stating AC relay is connected in charging pile circuit, the external city of one end connection of the first normally opened contact of AC relay
The firewire of electricity, one end of the other end the first capacitance of connection of the first normally opened contact, the one of the second normally opened contact of AC relay
The zero curve of the external alternating current of end connection, the other end of the second normally opened contact connect one end of the second capacitance, the other end of the first capacitance
Connect with the other end of the second capacitance, the tie point of the connection of one end of the resistance the first capacitance and the second capacitance, resistance it is another
One end is grounded, and the anode tap ground connection of the zener diode, cathode terminal is connected on the tie point of the first capacitance and the second capacitance,
The cathode terminal of the positive terminal connection zener diode of the diode, the negative pole end of zener diode connects AD output ends, described
The negative pole end of one end connection diode of third capacitance, the other end ground connection of third capacitance.
Preferably, first capacitance and the second capacitance are Y capacitance.
Preferably, the third capacitance is ceramic disc capacitor.
Preferably, the AD output ends are connected with microcontroller, and AD output ends export analog signal to the input terminal of microcontroller.
Compared with prior art, the utility model has the beneficial effects that：It is not influencing to exchange over the ground between relay contact
In the case of pressure resistance, detection relay whether adhesion.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model.
In figure：1, AC relay；2, the first capacitance；3, the second capacitance；4, third capacitance；5, resistance；6, two pole of voltage stabilizing
Pipe；7, diode；8, AD output ends.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of technical solution：AC relay adhesion detection circuit, including exchange
Relay 1, the first capacitance 2, the second capacitance 3, third capacitance 4, resistance 5, zener diode 6, diode 7 and AD output ends 8, institute
The coil for stating AC relay 1 is connected in charging pile circuit, and one end connection of the first normally opened contact of AC relay 1 is external
The firewire of alternating current, the other end of the first normally opened contact connect one end of the first capacitance 2, the second normally opened contact of AC relay 1
The external alternating current of one end connection zero curve, the other end of the second normally opened contact connects one end of the second capacitance 3, the first capacitance 2
The other end is connect with the other end of the second capacitance 3, the connection of one end connection the first capacitance 2 and the second capacitance 3 of the resistance 5
Point, the other end ground connection of resistance 5, the anode tap ground connection of the zener diode 6, cathode terminal are connected to the first capacitance 2 and second
On the tie point of capacitance 3, the cathode terminal of the positive terminal connection zener diode 6 of the diode 7, the cathode of zener diode 6
End connection AD output ends 8, the negative pole end of one end connection diode 7 of the third capacitance 4, the other end ground connection of third capacitance 4.
First capacitance, 2 and second capacitance 3 is Y capacitance.
The third capacitance 4 is ceramic disc capacitor.
The AD output ends 8 are connected with microcontroller, and AD output ends export analog signal to the input terminal of microcontroller.
By the technical program, AC relay 1 can be double-contact, or two single-contact relays 1, relay
After device 1 is closed, firewire L and zero curve N are connected to Y capacitance, due to the logical exchange resistance direct current of Y capacitance, 5 both ends firewire of resistance can to PE
To induce alternating voltage, zener diode 6 can protect voltage clamp in certain point, and diode 7 can end negative voltage, hand over
Galvanic electricity pressure is after diode 7, by ceramic disc capacitor voltage stabilizing, output smoothing DC voltage to Chip Microcomputer A/D simulation input interface.When
When not controlling the actuation of relay 1, AD Port detectings to voltage, representing relay 1 can adhesion.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of AC relay adhesion detection circuit, it is characterised in that：Including AC relay, the first capacitance, the second capacitance,
The coil of third capacitance, resistance, zener diode, diode and AD output ends, the AC relay is connected on charging pile electricity
Lu Zhong, the firewire of the external alternating current of one end connection of the first normally opened contact of AC relay, the other end of the first normally opened contact connect
One end of the first capacitance is connect, the zero curve of the external alternating current of one end connection of the second normally opened contact of AC relay, second is normally opened tactile
The other end of point connects one end of the second capacitance, and the other end of the first capacitance is connect with the other end of the second capacitance, the resistance
One end connection the first capacitance and the second capacitance tie point, the other end of resistance is grounded, the anode tap of the zener diode
Ground connection, cathode terminal are connected on the tie point of the first capacitance and the second capacitance, two pole of positive terminal connection voltage stabilizing of the diode
The negative pole end of the cathode terminal of pipe, zener diode connects AD output ends, the cathode of one end connection diode of the third capacitance
End, the other end ground connection of third capacitance.
2. a kind of AC relay adhesion detection circuit according to claim 1, it is characterised in that：First capacitance and
Second capacitance is Y capacitance.
3. a kind of AC relay adhesion detection circuit according to claim 1, it is characterised in that：The third capacitance is
Ceramic disc capacitor.
4. a kind of AC relay adhesion detection circuit according to claim 1, it is characterised in that：The AD output ends connect
It is connected to microcontroller, AD output ends export analog signal to the input terminal of microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148190.5U CN207908642U (en) | 2018-01-29 | 2018-01-29 | A kind of AC relay adhesion detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148190.5U CN207908642U (en) | 2018-01-29 | 2018-01-29 | A kind of AC relay adhesion detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908642U true CN207908642U (en) | 2018-09-25 |
Family
ID=63565464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820148190.5U Active CN207908642U (en) | 2018-01-29 | 2018-01-29 | A kind of AC relay adhesion detection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207908642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858895A (en) * | 2020-12-09 | 2021-05-28 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Novel direct current charging pile direct current relay adhesion judgment method and circuit thereof |
| CN112986813A (en) * | 2021-03-05 | 2021-06-18 | 苏州海鹏科技有限公司 | Relay detection circuit and detection method of single-phase grid-connected photovoltaic inverter |
-
2018
- 2018-01-29 CN CN201820148190.5U patent/CN207908642U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858895A (en) * | 2020-12-09 | 2021-05-28 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Novel direct current charging pile direct current relay adhesion judgment method and circuit thereof |
| CN112986813A (en) * | 2021-03-05 | 2021-06-18 | 苏州海鹏科技有限公司 | Relay detection circuit and detection method of single-phase grid-connected photovoltaic inverter |
| CN112986813B (en) * | 2021-03-05 | 2023-03-21 | 苏州海鹏科技有限公司 | Relay detection circuit and detection method of single-phase grid-connected photovoltaic inverter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 room 149, 18 Xinya Road, Wujin national hi tech Industrial Development Zone, Changzhou, Jiangsu Patentee after: Wanbang Digital Energy Co., Ltd Address before: 213000 room 149, 18 Xinya Road, Wujin national hi tech Industrial Development Zone, Changzhou, Jiangsu Patentee before: JIANGSU WANBANG DEHE NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |