CN110901449B - Alternating-current charging stake relay detects and controlling means and alternating-current charging stake - Google Patents
Alternating-current charging stake relay detects and controlling means and alternating-current charging stake Download PDFInfo
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- CN110901449B CN110901449B CN201911075413.5A CN201911075413A CN110901449B CN 110901449 B CN110901449 B CN 110901449B CN 201911075413 A CN201911075413 A CN 201911075413A CN 110901449 B CN110901449 B CN 110901449B
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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
- B60L53/60—Monitoring or controlling charging stations
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a relay detection and control device for an alternating current charging pile, which comprises a relay detection module, a detection control switch, an optical coupling isolation output module and a main control chip, wherein the optical coupling isolation output module is connected with the relay detection module; the relay detection module is respectively connected with the optical coupling isolation output module and at least one detected relay, the main control chip is respectively connected with the optical coupling isolation output module and the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optical coupling isolation output module to output a detection signal; the main control chip acquires an on-off state signal of the relay to be detected in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relation or not when entering a contact adhesion detection mode, and sends a cut-off instruction to the air switch if not. The invention can detect the action of the relay and effectively control the disconnection of the relay, thereby improving the safety and reliability of the charging pile and ensuring the safety of users and the safety of vehicle charging.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to a relay detection and control device of an alternating current charging pile and the alternating current charging pile.
Background
Along with the attention of people to green trip, electric automobile is more and more popular, and corresponding charging equipment such as electric pile also is more and more, and these charging equipment's the security and the reliability of charging also receive much attention. The inventor surveys and studies the current electric pile of filling and discovers, and alternating current charging stake's alternating current power supply relay has the phenomenon that the adhesion of contact appears and unable dropout rapidly under heavy current operating condition, leads to filling electric pile uncontrollable normal power failure and need the maintenance, and more serious is under the condition that other trouble appeared simultaneously, has operating personnel to electrocute and the risk of whole out of control.
Disclosure of Invention
The invention provides an alternating-current charging pile relay detection and control device and an alternating-current charging pile, which are used for solving the technical problem that the existing charging pile relay is stuck by contacts.
In order to solve the technical problem, the embodiment of the invention provides an alternating current charging pile relay detection and control device which comprises a relay detection module, a detection control switch, an optical coupling isolation output module and a main control chip, wherein the optical coupling isolation output module is used for outputting a signal to the relay detection module;
the relay detection module is respectively connected with the control end of the optical coupling isolation output module and two ends of at least one relay to be detected, the main control chip is respectively connected with the output end of the optical coupling isolation output module and the control end of the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optical coupling isolation output module to output detection signals to the main control chip;
the main control chip acquires the on-off state signal of the relay to be detected in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relation or not when controlling the detection control switch to be closed so as to enter a contact adhesion detection mode, and sends a cut-off instruction to the air switch if the on-off state signal and the detection signal do not accord with the preset relay state matching relation.
As a preferred scheme, the on-off state signal comprises a closed state signal and an open state signal of a relay, and the detection signal comprises a high level signal and a low level signal output by an optical coupler;
the preset relay state matching relationship is as follows: at the same time, the closed state signal corresponds to a low level signal; or, the off-state signal corresponds to a high level signal.
Preferably, the relay detection module comprises at least one relay detection circuit, and any one of the relay detection circuits comprises a rectifier bridge;
a first alternating current input end of the rectifier bridge is connected with a first power line, and a second alternating current input end of the rectifier bridge is connected to a second power line through the detection control switch and the corresponding relay to be detected in sequence;
the positive pole of the direct current output end of the rectifier bridge is connected with the input end of the optical coupling isolation output module, and the negative pole of the direct current output end of the rectifier bridge is connected with the output end of the optical coupling isolation output module;
the first power line is a live wire, and the second power line is a zero line; or, the first power line is a zero line, and the second power line is a live line.
Preferably, any one of the relay detection circuits further comprises a zener diode;
the positive pole of the voltage stabilizing diode is respectively connected with the positive pole of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module, and the negative pole of the voltage stabilizing diode is respectively connected with the negative pole of the direct current output end of the rectifier bridge and the output end of the optical coupling isolation output module.
Preferably, any one of the relay detection circuits further comprises a fuse and a capacitor;
the fuse is connected on a connecting circuit between the positive electrode of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module;
the first end of the capacitor is connected with the positive pole of the direct current output end of the rectifier bridge, and the second end of the capacitor is connected with the negative pole of the direct current output end of the rectifier bridge.
As a preferred scheme, the optical coupling isolation output module comprises at least one optical coupling isolation output circuit, and any one of the optical coupling isolation output circuits comprises an optical coupler, a first power supply and a first resistor;
the anode of the light emitting diode of the optical coupler is connected with the input end of the optical coupler isolation output module, and the cathode of the light emitting diode of the optical coupler is connected with the output end of the optical coupler isolation output module;
the first power supply is connected with a collector of a phototriode of the optocoupler and an output end of the optocoupler isolation output module through the first resistor respectively, and an emitting electrode of the phototriode of the optocoupler is grounded.
Preferably, the number of the relays to be tested, the relay detection circuits and the optical coupling output circuits is 2, one of the relays to be tested is connected to a live wire, and the other relay is connected to a zero wire;
the tested relay, the relay detection circuit and the optical coupling isolation output circuit are in unique corresponding connection relation.
Preferably, the detection control switch comprises a double-pole double-throw relay;
one switch of the double-pole double-throw relay is connected to a connecting circuit between one of the tested relays and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit;
and the other switch of the double-pole double-throw relay is connected on a connecting line between the other relay to be tested and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit.
Preferably, the detection control switch further comprises a second power supply, a thyristor, a second resistor and a third resistor;
the second power supply is connected with the cathode of the controlled silicon through the relay of the double-pole double-throw relay, the control electrode of the controlled silicon is respectively connected with one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected with the main control chip, and the anode of the controlled silicon and the other end of the third resistor are grounded.
The embodiment of the invention also provides the alternating-current charging pile, which comprises the alternating-current charging pile relay detection and control device.
Compared with the prior art, the embodiment of the invention provides an alternating current charging pile relay detection and control device which comprises a relay detection module, a detection control switch, an optical coupling isolation output module and a main control chip, wherein the optical coupling isolation output module is used for outputting a signal to the relay detection module; the relay detection module is respectively connected with the control end of the optical coupling isolation output module and two ends of at least one relay to be detected, the main control chip is respectively connected with the output end of the optical coupling isolation output module and the control end of the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optical coupling isolation output module to output detection signals to the main control chip; the main control chip acquires the on-off state signal of the relay to be detected in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relation or not when controlling the detection control switch to be closed so as to enter a contact adhesion detection mode, and sends a cut-off instruction to the air switch if the on-off state signal and the detection signal do not accord with the preset relay state matching relation. Through alternating-current charging stake relay detects and controlling means, can real-time supervision the action of quilt survey relay, when main control chip judges according to break-make state signal with the detected signal when the action of quilt survey relay is unusual, then send the cutting instruction to air switch immediately and cut off the power in time to guarantee user's safety and vehicle safety of charging. The optical coupling isolation output module is adopted, the anti-interference capability and the working stability are improved by utilizing the characteristic of optical coupling isolation, and the safety and the reliability of the charging pile are improved. Like this, through alternating-current charging stake relay detects and controlling means can effectively detect whether the relay takes place to electrocute the adhesion to in time cut off empty opening after the relay action is unusual in order to guarantee safety.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an ac charging pile relay detection and control device according to an embodiment of the present invention;
fig. 2 is a circuit configuration diagram of the ac charging pile relay detection and control apparatus according to the embodiment of the present invention.
Detailed Description
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, a preferred embodiment of the present invention provides an ac charging pile relay detection and control apparatus, including a relay detection module, a detection control switch, an optical coupling isolation output module, and a main control chip; the main control chip can be a control board of the alternating current charging pile, can also be a controller special for grounding detection and control, and can cut off a power supply through the air switch in time;
the relay detection module is respectively connected with the control end of the optical coupling isolation output module and two ends of at least one relay to be detected, the main control chip is respectively connected with the output end of the optical coupling isolation output module and the control end of the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optical coupling isolation output module to output detection signals to the main control chip;
the main control chip acquires the on-off state signal of the relay to be detected in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relation or not when controlling the detection control switch to be closed so as to enter a contact adhesion detection mode, and sends a cut-off instruction to the air switch if the on-off state signal and the detection signal do not accord with the preset relay state matching relation.
In this embodiment, through alternating-current charging stake relay detection and control device, can real-time supervision the action of quilt survey relay, when main control chip judges according to break-make state signal with the detected signal the action of quilt survey relay is unusual, then send the cutting instruction to air switch immediately and cut off the power in time to ensure user's safety and vehicle safety of charging. The optical coupling isolation output module is adopted, the anti-interference capability and the working stability are improved by utilizing the characteristic of optical coupling isolation, and the safety and the reliability of the charging pile are improved.
In one preferred embodiment, the on-off state signal comprises a closed state signal and an open state signal of the relay, and the detection signal comprises a high level signal and a low level signal output by the optical coupler;
the preset relay state matching relationship is as follows:
at the same time, the closed state signal corresponds to a low level signal; or the like, or, alternatively,
at the same time, the off-state signal corresponds to a high-level signal.
In this embodiment, utilize the quick response characteristic of opto-coupler, by opto-coupler isolation output module to main control chip output high level signal or low level signal can improve interference killing feature and job stabilization nature to be favorable to simplifying relay detection logic, the logic of this embodiment is as follows:
when the relay to be tested is in a closed state, the on-off state signal acquired by the main control chip is a closed state signal, if the detection signal is a low level signal at the moment, the relay to be tested is judged to be normally closed, and if the detection signal is a high level signal at the moment, the relay to be tested is judged to be abnormally closed.
Similarly, when the relay to be tested is in the off state, the on-off state signal acquired by the main control chip is an off state signal, if the detection signal is a high level signal at the moment, the relay to be tested is judged to be normally off, and if the detection signal is a low level signal at the moment, the relay to be tested is judged to be abnormally off.
Referring to fig. 2, in a preferred embodiment, for rationalizing the structure, the relay detection module comprises at least one relay detection circuit, any of which comprises a rectifier bridge; the rectifier bridge can convert alternating current into direct current to drive the optocoupler to work.
Specifically, a first alternating current input end of the rectifier bridge is connected with a first power line, and a second alternating current input end of the rectifier bridge is connected to a second power line through the detection control switch and the corresponding relay to be detected in sequence;
the positive pole of the direct current output end of the rectifier bridge is connected with the input end of the optical coupling isolation output module, and the negative pole of the direct current output end of the rectifier bridge is connected with the output end of the optical coupling isolation output module;
the first power line is a live wire ACL, and the second power line is a zero wire ACN; or, the first power line is a null line ACN, and the second power line is a live line ACL.
Any relay detection circuit further comprises a voltage stabilizing diode; the positive pole of the voltage stabilizing diode is respectively connected with the positive pole of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module, and the negative pole of the voltage stabilizing diode is respectively connected with the negative pole of the direct current output end of the rectifier bridge and the output end of the optical coupling isolation output module.
In addition, any relay detection circuit further comprises a fuse and a capacitor; the fuse is connected on a connecting circuit between the positive electrode of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module; the first end of the capacitor is connected with the positive pole of the direct current output end of the rectifier bridge, and the second end of the capacitor is connected with the negative pole of the direct current output end of the rectifier bridge.
The voltage stabilizing diode can prevent the optical coupler from being burnt out due to overhigh voltage of the loop, and the fuse can avoid overlarge current in the loop, so that the effect of protecting the optical coupler is achieved, and the reliability of the relay detection module is improved.
With continued reference to fig. 2, in a preferred embodiment, the optical coupler isolation output module includes at least one optical coupler isolation output circuit, and any one of the optical coupler isolation output circuits includes an optical coupler, a first power supply, and a first resistor;
the anode of the light emitting diode of the optical coupler is connected with the input end of the optical coupler isolation output module, and the cathode of the light emitting diode of the optical coupler is connected with the output end of the optical coupler isolation output module;
the first power supply is connected with a collector of a phototriode of the optocoupler and an output end of the optocoupler isolation output module through the first resistor respectively, and an emitting electrode of the phototriode of the optocoupler is grounded.
In the embodiment of the invention, the alternating current charging pile relay detection and control device is suitable for monitoring the relay on the power line, preferably, two relays on the live line and the zero line are simultaneously checked through one device to determine that the action monitoring of the relays is comprehensive, so that the intelligent monitoring function of the alternating current charging pile is effectively ensured, and the embodiment of simultaneous monitoring is described in detail below.
In one preferred embodiment, the number of the tested relays, the relay detection circuits and the optical coupling output circuits is 2, one of the tested relays is connected to a live wire, and the other relay is connected to a zero wire; the tested relay, the relay detection circuit and the optical coupling isolation output circuit are in unique corresponding connection relation.
The detection control switch comprises a double-pole double-throw relay; one switch of the double-pole double-throw relay is connected to a connecting circuit between one of the tested relays and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit; and the other switch of the double-pole double-throw relay is connected on a connecting line between the other relay to be tested and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit.
The detection control switch also comprises a second power supply, a controlled silicon, a second resistor and a third resistor; the second power supply is connected with the cathode of the controllable silicon through the relay of the double-pole double-throw relay, the control electrode of the controllable silicon is respectively connected with one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected with the main control chip through the control end of the detection control switch, and the anode of the controllable silicon and the other end of the third resistor are grounded.
In this embodiment, the detection control switch is used for controlling whether detection work is carried out on the ac charging pile relay detection and control device, and when the detection work is carried out, the main control chip sends an instruction to the control electrode of the thyristor so that the relay of the double-pole double-throw relay adsorbs two switches to be closed to switch on the relay detection circuit, and with reference to fig. 2, the monitoring process of the relay is as follows:
1. the tested relay K1 relay and the tested relay K2 relay are closed, and the main control chip controls the detection control switch test relay to be closed so as to switch on the two relay detection circuits;
at the moment, if an output end ACL test signal of the optical coupling isolation output module corresponding to the tested relay K1 relay is at a low level, the K1 relay is normally closed, otherwise, the K1 relay is not normally closed;
and if the output end ACN test signal of the optical coupling isolation output module corresponding to the tested relay K2 relay is at a low level, the K2 relay is normally closed, otherwise, the K2 relay is not normally closed.
2. And when the main control chip detects a valid ACL test signal and an ACN test signal, the relay detection is finished, and the main control chip controls to disconnect the detection control switch test relay so as to disconnect the two relay detection circuits.
3. The tested relay K1 relay and the tested relay K2 relay are disconnected, and the main control chip controls the detection control switch test relay to be closed so as to switch on the two relay detection circuits;
at the moment, if an output end ACL test signal of the optocoupler-isolation output module corresponding to the relay K1 relay to be tested is at a high level, the K1 relay is normally disconnected, otherwise, the normally disconnected relay is not normally disconnected;
and if the output end ACN test signal of the optical coupling isolation output module corresponding to the tested relay K2 relay is at a high level, the K2 relay is normally disconnected, otherwise, the K2 relay is not normally disconnected.
4. And when the main control chip detects a valid ACL test signal and an ACN test signal, the relay detection is finished, and the main control chip controls to disconnect the detection control switch test relay so as to disconnect the two relay detection circuits.
The embodiment of the invention also provides the alternating-current charging pile, and the relay detection and control device of the alternating-current charging pile is applied, so that the action of the relay can be detected, and the disconnection of the relay can be effectively controlled, so that the safety and the reliability of the charging pile are improved, and the safety of users and the safety of vehicle charging are guaranteed.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The device for detecting and controlling the relay of the alternating-current charging pile is characterized by comprising a relay detection module, a detection control switch, an optical coupling isolation output module and a main control chip;
the relay detection module is respectively connected with the control end of the optical coupling isolation output module and two ends of at least one relay to be detected, the main control chip is respectively connected with the output end of the optical coupling isolation output module and the control end of the detection control switch, the detection control switch is used for controlling the relay detection module to be powered on or powered off, and the relay detection module is used for controlling the optical coupling isolation output module to output detection signals to the main control chip;
the main control chip acquires the on-off state signal of the relay to be detected in real time, judges whether the on-off state signal and the detection signal accord with a preset relay state matching relation or not when controlling the detection control switch to be closed so as to enter a contact adhesion detection mode, and sends a cut-off instruction to the air switch if the on-off state signal and the detection signal do not accord with the preset relay state matching relation.
2. The alternating-current charging pile relay detection and control device as claimed in claim 1, wherein the on-off state signal comprises a closed state signal and an open state signal of the relay, and the detection signal comprises a high level signal and a low level signal output by an optical coupler;
the preset relay state matching relationship is as follows: at the same time, the closed state signal corresponds to a low level signal; or, the off-state signal corresponds to a high level signal.
3. The ac charging post relay detection and control device according to claim 1 or 2, wherein said relay detection module comprises at least one relay detection circuit, any of said relay detection circuits comprising a rectifier bridge;
a first alternating current input end of the rectifier bridge is connected with a first power line, and a second alternating current input end of the rectifier bridge is connected to a second power line through the detection control switch and the corresponding relay to be detected in sequence;
the positive pole of the direct current output end of the rectifier bridge is connected with the input end of the optical coupling isolation output module, and the negative pole of the direct current output end of the rectifier bridge is connected with the output end of the optical coupling isolation output module;
the first power line is a live wire, and the second power line is a zero line; or, the first power line is a zero line, and the second power line is a live line.
4. The ac charging post relay detection and control apparatus of claim 3, wherein any of said relay detection circuits further comprises a zener diode;
the positive pole of the voltage stabilizing diode is respectively connected with the positive pole of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module, and the negative pole of the voltage stabilizing diode is respectively connected with the negative pole of the direct current output end of the rectifier bridge and the output end of the optical coupling isolation output module.
5. The ac charging post relay detection and control device of claim 3, wherein any of said relay detection circuits further comprises a fuse, a capacitor;
the fuse is connected on a connecting circuit between the positive electrode of the direct current output end of the rectifier bridge and the input end of the optical coupling isolation output module;
the first end of the capacitor is connected with the positive pole of the direct current output end of the rectifier bridge, and the second end of the capacitor is connected with the negative pole of the direct current output end of the rectifier bridge.
6. The AC charging post relay detection and control device as claimed in claim 3, wherein said optical coupling isolation output module comprises at least one optical coupling isolation output circuit, any said optical coupling isolation output circuit comprises an optical coupler, a first power supply, a first resistor;
the anode of the light emitting diode of the optical coupler is connected with the input end of the optical coupler isolation output module, and the cathode of the light emitting diode of the optical coupler is connected with the output end of the optical coupler isolation output module;
the first power supply is connected with a collector of a phototriode of the optocoupler and an output end of the optocoupler isolation output module through the first resistor respectively, and an emitting electrode of the phototriode of the optocoupler is grounded.
7. The alternating-current charging pile relay detection and control device as claimed in claim 6, wherein the number of the relay to be detected, the relay detection circuit and the optical coupling isolation output circuit is 2, one of the relay to be detected is connected to a live wire, and the other relay is connected to a zero wire;
the tested relay, the relay detection circuit and the optical coupling isolation output circuit are in unique corresponding connection relation.
8. The ac charging post relay detection and control apparatus of claim 7, wherein said detection control switch comprises a double pole double throw relay;
one switch of the double-pole double-throw relay is connected to a connecting circuit between one of the tested relays and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit;
and the other switch of the double-pole double-throw relay is connected on a connecting line between the other relay to be tested and the second alternating current input end of the rectifier bridge of the corresponding relay detection circuit.
9. The ac charging post relay detection and control device of claim 8, wherein said detection control switch further comprises a second power source, a thyristor, a second resistor, a third resistor;
the second power supply is connected with the cathode of the controlled silicon through the relay of the double-pole double-throw relay, the control electrode of the controlled silicon is respectively connected with one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected with the main control chip, and the anode of the controlled silicon and the other end of the third resistor are grounded.
10. An alternating current charging pile characterized by comprising the alternating current charging pile relay detection and control device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075413.5A CN110901449B (en) | 2019-11-06 | 2019-11-06 | Alternating-current charging stake relay detects and controlling means and alternating-current charging stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075413.5A CN110901449B (en) | 2019-11-06 | 2019-11-06 | Alternating-current charging stake relay detects and controlling means and alternating-current charging stake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110901449A CN110901449A (en) | 2020-03-24 |
| CN110901449B true CN110901449B (en) | 2021-05-18 |
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| CN113589194B (en) * | 2020-04-30 | 2024-05-28 | 上海钛昕电气科技有限公司 | Adhesion detection and short circuit detection circuit and control method thereof |
| CN111521929A (en) * | 2020-05-08 | 2020-08-11 | 中汇瑞德电子（芜湖）有限公司 | Detection apparatus for relay |
| CN112505534A (en) * | 2020-09-29 | 2021-03-16 | 上海亮一科技有限公司 | Relay adhesion and output short circuit detection circuit |
| CN113049950B (en) * | 2021-03-05 | 2024-02-09 | 阳光电源股份有限公司 | Relay detection device and method and charging pile |
| CN113433847B (en) * | 2021-05-27 | 2022-06-17 | 东风电驱动系统有限公司 | Self-adaptive control system applied to uncertain relay system |
| CN113183804B (en) * | 2021-06-01 | 2022-12-16 | 陕西天天欧姆新能源有限公司 | Electric vehicle charging pile and vehicle charging detection method |
| CN113746381B (en) * | 2021-08-30 | 2023-11-03 | 珠海格力电器股份有限公司 | Braking control device and method of motor and motor |
| CN113900019A (en) * | 2021-11-02 | 2022-01-07 | 浙江广为电器工具有限公司 | Charging pile relay bonding detection circuit and method |
| CN114142951A (en) * | 2021-12-01 | 2022-03-04 | 北京北广科技股份有限公司 | Network relay control checking device and method for antenna tuner |
| CN116228205B (en) * | 2023-03-29 | 2023-11-21 | 东莞先知大数据有限公司 | Charging pile outage risk diagnosis method, device and storage medium |
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| CN201438207U (en) * | 2009-07-24 | 2010-04-14 | 美的集团有限公司 | Relay fault detection circuit |
| TWI413786B (en) * | 2011-08-19 | 2013-11-01 | Chroma Ate Inc | High pressure test method and equipment for rapid detection of contact loop |
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| JP6004174B2 (en) * | 2012-08-29 | 2016-10-05 | 三菱自動車工業株式会社 | Welding judgment circuit |
| CN204789923U (en) * | 2015-05-26 | 2015-11-18 | 吴小燕 | Failure detector circuit |
| CN105527567A (en) * | 2016-01-27 | 2016-04-27 | 惠州市蓝微新源技术有限公司 | High voltage relay adhesion detection circuit of battery management system and detection method |
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| CN207318679U (en) * | 2017-10-12 | 2018-05-04 | 江苏兴云新能源有限公司 | Comprehensive safety detection device |
| CN108832673B (en) * | 2018-06-06 | 2021-07-23 | 西安特锐德智能充电科技有限公司 | Direct current charging system, PDU (Power distribution Unit) and starting charging detection method of charging path |
| CN209311636U (en) * | 2018-10-22 | 2019-08-27 | 汉宇集团股份有限公司 | Relay high-voltage end adhesion detection circuit and electric car charging gun |
| CN209514003U (en) * | 2018-12-28 | 2019-10-18 | 深圳市蓝海华腾技术股份有限公司 | Relay contact state detection circuit and its condition detecting system, electric car |
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