CN111452640B - Electric charging gun homing detection circuit and method - Google Patents
Electric charging gun homing detection circuit and method Download PDFInfo
- Publication number
- CN111452640B CN111452640B CN202010283733.6A CN202010283733A CN111452640B CN 111452640 B CN111452640 B CN 111452640B CN 202010283733 A CN202010283733 A CN 202010283733A CN 111452640 B CN111452640 B CN 111452640B
- Authority
- CN
- China
- Prior art keywords
- contact
- remote signaling
- charging gun
- voltage
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
-
- 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
-
- 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
- Y02T90/14—Plug-in 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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a circuit and a method for detecting the homing of a charging gun in an electrical mode, which utilize the resistance between a CC1/CP contact and a PE contact of a direct current charging pile/an alternating current charging pile to generate a remote signaling signal to judge whether the charging gun is homing or not, and simultaneously utilize the change of the resistance between the CC1/CP and the PE to detect the switch state of an electromagnetic lock in the charging gun to judge the two remote signaling signals simultaneously, thereby effectively detecting the homing condition of the charging gun and the switch state of the electromagnetic lock in the charging gun, enhancing the stability and the reliability of the system, avoiding the misjudgment of the system caused by detection in a mechanical mode, ensuring that the detection mode is not limited by the service life of a mechanical switch, improving the reliability of the detection of the system, being applicable to the direct current charging pile and the alternating current charging pile and expanding the application range of the detection mode.
Description
Technical Field
The invention relates to the technical field of automatic detection of electric car charging piles, in particular to a circuit and a method for detecting homing of a charging gun in an electric mode.
Background
In the existing charging pile design, a mechanical mode is generally used for detecting whether a charging gun is reset, however, a certain defect exists in the mechanical mode, a mechanical switch generally has a certain service life, a device is out of order after the limit switch times are reached, and a mechanical contact is easy to cause system misjudgment.
Therefore, a more reliable homing detection mode of the charging gun is designed to reduce the damage rate of the charging gun.
Disclosure of Invention
The invention aims to provide a homing detection circuit and a homing detection method for a charging gun in an electrical mode, and aims to solve the problem that mechanical contacts of a charging pile are easy to cause system misjudgment in the prior art, and improve the reliability of system detection.
In order to achieve the above technical object, the present invention provides a homing detection circuit for a charging gun in an electrical manner, the detection circuit comprising:
a contact signal input circuit, a micro-switch detection circuit, a remote signaling input circuit 1 and a remote signaling input circuit 2 are arranged in the charging pile, and the micro-switch detection circuit is connected with the remote signaling input circuit 2;
when the charging gun is reset, the contact signal input circuit is respectively connected with the micro switch detection circuit and the remote signaling input circuit 1;
the remote signaling input circuit 1 detects whether the charging gun is in place or not by using the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 1, and the remote signaling input circuit 2 detects the switching state of the electromagnetic lock in the charging gun by using the change of the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 2.
Preferably, the charging pile is a direct current charging pile or an alternating current charging pile.
Preferably, the contact signal input circuit structure is:
for the direct-current charging pile, the CC1 contact is connected with resistors R1 and R2, the other end of the R1 is connected with 12V voltage, the other end of the R2 is connected with a micro switch S, and the other end of the micro switch S is connected with a PE contact;
for the alternating-current charging pile, the contacts are a CP signal contact and a PE signal contact, the CP contact is connected with a resistor R1, the other end of the resistor R1 is connected with a micro switch S1, the S1 is also connected with 12V voltage and PWM signals, and the PE is grounded.
Preferably, the circuit structure of the remote signaling input circuit 1 is as follows:
the CC1 contact is connected with the resistor R7, the other end of the R7 is connected with the diode VD1, the capacitor C2 and the 1 st pin of the optocoupler E1, the diode VD1, the capacitor C2 and the 2 nd pin of the optocoupler E1 are connected with the resistor R8, the other end of the R8 is connected with the PE contact, and the 4 th pin of the E1 is connected with the EKI1 output end and the capacitor C1.
Preferably, the circuit structure of the remote signaling input loop 2 is as follows:
the CC1 contact is connected with the base electrode of the triode Q1, the PE contact is connected with the resistor R10, the other end of the resistor R10 is connected with the resistor R9 and the emitter electrode of the Q1, the other end of the resistor R9 is connected with 12V voltage, the collector electrode of the Q1 is connected with the diode VD2, the capacitor C3 and the 1 st pin of the optocoupler E2, the diode VD2, the capacitor C3 and the 2 nd pin of the optocoupler E2 are connected with the PE contact, and the 4 th pin of the E2 is connected with the EKI2 output end and the capacitor C4.
Preferably, in the state that the charging gun is not reset, no potential difference exists between the CC1 contact and the PE contact, the light emitting diode in the optocoupler E1 does not emit light, the phototriode is cut off, and the remote signaling output end is at a high level; when the charging gun is reset, a resistor between the CC1 contact and the PE contact is connected into the remote signaling input loop 1, the resistor is divided, potential difference is generated at two ends of the light emitting diode, the light emitting diode emits light, the phototriode is conducted, and the remote signaling output end is at a low level.
Preferably, when the electromagnetic lock of the charging gun is opened, the resistance value between CC1 and PE is infinite, the voltage at the terminal CC1 is 12V, that is, the base voltage of the triode Q1 is 12V, the emitter voltage of the triode is 10V, the emitter voltage is lower than the base voltage, the triode is turned off, no signal is output to the remote signaling input loop 2, and the output terminal is at high level; when the electromagnetic lock of the charging gun is closed, the resistance between CC1 and PE is R2, the voltage of the end of CC1 is 6V, the voltage of the emitter electrode of the triode Q1 is higher than the voltage of the base electrode, the triode is conducted, a 12V voltage signal is output to the remote signaling input loop 2, and the output end is low level.
The invention also provides a method for detecting the homing of the charging gun by using the detection circuit, which comprises the following operations:
whether the charging gun is reset or not is judged by utilizing whether a potential difference is generated by voltage division of a resistor between a charging pile base and a contact of the charging gun or not and outputting a high level or a low level through the on and off of an optocoupler;
and by utilizing the resistance value change between the charging pile base and the contact of the charging gun, the high level or the low level is output through the on and off of the optocoupler, and whether the electromagnetic lock of the charging gun is opened or not is judged.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
compared with the prior art, the invention utilizes the resistance between the CC1/CP contact and the PE contact of the direct current charging pile/alternating current charging pile to generate the remote signaling signal to judge whether the charging gun is reset, and simultaneously utilizes the change of the resistance between the CC1/CP and the PE to detect the switch state of the electromagnetic lock in the charging gun, and simultaneously judges the two paths of remote signaling signals to effectively detect the reset condition of the charging gun and the switch state of the electromagnetic lock in the charging gun, thereby enhancing the stability and the reliability of the system, avoiding the misjudgment of the system caused by the detection in a mechanical way, avoiding the limitation of the service life of the mechanical switch in the detection way, improving the reliability of the detection of the system, being applicable to the direct current charging pile and the alternating current charging pile and expanding the application range of the detection way.
Drawings
FIG. 1 is a diagram of a circuit for detecting homing of a charging gun in an electrical manner according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for detecting homing of a charging gun by using an electrical method according to an embodiment of the present invention.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.
The following describes in detail a circuit and a method for detecting homing of a charging gun by adopting an electrical mode according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the present invention discloses a homing detection circuit for a charging gun in an electrical manner, the circuit comprising:
a contact signal input circuit, a micro-switch detection circuit, a remote signaling input circuit 1 and a remote signaling input circuit 2 are arranged in the charging pile, and the micro-switch detection circuit is connected with the remote signaling input circuit 2;
when the charging gun is reset, the contact signal input circuit is respectively connected with the micro switch detection circuit and the remote signaling input circuit 1;
the remote signaling input circuit 1 detects whether the charging gun is in place or not by using the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 1, and the remote signaling input circuit 2 detects the switching state of the electromagnetic lock in the charging gun by using the change of the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 2.
For direct current charging pile, CC1 contact connecting resistance R1, R2, 12V voltage is connected to the R1 other end, and micro-gap switch S is connected to the R2 other end, and the PE contact is connected to the micro-gap switch S other end, when the contact is closed, gathers CC1 signal and PE signal access remote signaling input circuit in the rifle that charges, and when the contact disconnection, no signal access remote signaling input circuit.
The remote signaling input loop comprises two paths of remote signaling input loops.
The remote signaling input loop 1 has the circuit structure that:
the CC1 contact is connected with the resistor R7, the other end of the R7 is connected with the diode VD1, the capacitor C2 and the 1 st pin of the optocoupler E1, the diode VD1, the capacitor C2 and the 2 nd pin of the optocoupler E1 are connected with the resistor R8, the other end of the R8 is connected with the PE contact, and the 4 th pin of the E1 is connected with the EKI1 output end and the capacitor C1.
The remote signaling input loop 2 has the circuit structure that:
the CC1 contact is connected with the base electrode of the triode Q1, the PE contact is connected with the resistor R10, the other end of the resistor R10 is connected with the resistor R9 and the emitter electrode of the Q1, the other end of the resistor R9 is connected with 12V voltage, the collector electrode of the Q1 is connected with the diode VD2, the capacitor C3 and the 1 st pin of the optocoupler E2, the diode VD2, the capacitor C3 and the 2 nd pin of the optocoupler E2 are connected with the PE contact, and the 4 th pin of the E2 is connected with the EKI2 output end and the capacitor C4.
Detecting whether a charging gun is in place or not through a remote signaling input loop 1, wherein in a state that the charging gun is not in place, no potential difference exists between a CC1 contact and a PE contact, a light emitting diode in an optical coupler E1 does not emit light, a phototriode is cut off, and a remote signaling output end is in a high level; when the charging gun is reset, a resistor between the CC1 contact and the PE contact is connected into the remote signaling input loop 1, the resistor is divided, potential difference is generated at two ends of the light emitting diode, the light emitting diode emits light, the phototriode is conducted, and the remote signaling output end is at a low level. Through the loop, the resistor between the CC1 and the PE contact is utilized to generate a remote signaling signal to judge whether the charging gun is reset.
Detecting the switch state of an electromagnetic lock in a charging gun through a remote signaling input loop 2, wherein resistors R9 and R10 and a triode Q1 form a micro switch detection circuit, when the electromagnetic lock in the charging gun is started, the micro switch is disconnected, the resistance between a CC1 contact and a PE contact is infinite, the terminal voltage of the CC1 contact is 12V, namely the base voltage of the triode Q1 is 12V, the emitter voltage of the triode Q1 is 10V, the emitter voltage is lower than the base voltage, the triode Q1 is cut off, and no signal is output to the remote signaling input loop 2; when the electromagnetic lock is closed, the micro switch is closed, the resistance between the CC1 contact and the PE contact is R2, the voltage of the CC1 end is 6V, the voltage of the emitter electrode of the triode Q1 is higher than the voltage of the base electrode, the triode Q1 is conducted, and a 12V voltage signal is output to the remote signaling input loop 2.
When the micro switch detection circuit outputs no signal to the remote signaling input loop, the light emitting diode in the optical coupler does not emit light, the phototriode is cut off, and the remote signaling output end is at a high level; when a 12V voltage signal in the micro switch detection circuit is output to a remote signaling input loop, a light emitting diode in the optical coupler emits light, a phototriode is conducted, and a remote signaling output end is at a low level.
When the electromagnetic lock of the charging gun is started, the resistance value between CC1 and PE is infinite, the voltage of the end of CC1 is 12V, namely the base voltage of a triode Q1 is 12V, the emitter voltage of the triode is 10V, the emitter voltage is lower than the base voltage, the triode is cut off, no signal is output to a remote signaling input loop 2, and the output end is high level; when the electromagnetic lock of the charging gun is closed, the resistance between CC1 and PE is R2, the voltage of the end of CC1 is 6V, the voltage of the emitter electrode of the triode Q1 is higher than the voltage of the base electrode, the triode is conducted, a 12V voltage signal is output to the remote signaling input loop 2, and the output end is low level.
The optical couplers E1 and E2 play an isolating role, an input end and an output end of remote signaling are isolated in a photoelectric isolation mode, independent power supplies can be arranged at two ends, and the core components are prevented from being influenced by the outside. The resistors R7, R8 and the capacitors C2 and C3 respectively play a role in filtering, filtering out high-frequency interference signals of a remote signaling loop, avoiding error remote signaling generated by the interference signals, and playing a role in limiting current at the same time, so that the current entering the light-emitting diode is limited at the milliamp level.
In addition, the invention is also suitable for alternating-current charging piles, wherein the contacts are CP signal contacts and PE signal contacts, the CP contact is connected with a resistor R1, the other end of the resistor R1 is connected with a micro switch S1, the S1 is also connected with 12V voltage and PWM signals, and the PE is grounded. And detecting the alternating-current charging pile by utilizing the resistance change between the CP contact and the PE contact, so as to judge the homing condition of the charging gun and the switching state of an electromagnetic lock in the charging gun.
According to the invention, the resistor between the CC1/CP contact and the PE contact of the direct current charging pile/alternating current charging pile is utilized to generate a remote signaling signal to judge whether the charging gun is reset, meanwhile, the change of the resistance between the CC1/CP and the PE is utilized to detect the switch state of the electromagnetic lock in the charging gun, and the two paths of remote signaling signals are simultaneously judged, so that the reset condition of the charging gun and the switch state of the electromagnetic lock in the charging gun are effectively detected, the stability and the reliability of the system are enhanced, the misjudgment of the system caused by the detection in a mechanical way can be avoided, the detection way is not limited by the service life of the mechanical switch, the reliability of the system detection is improved, the method is simultaneously applicable to the direct current charging pile and the alternating current charging pile, and the application range of the detection way is enlarged.
As shown in fig. 2, the invention also discloses a method for detecting homing of the charging gun by using the detection circuit, which comprises the following operations:
whether the charging gun is reset or not is judged by utilizing whether a potential difference is generated by voltage division of a resistor between a charging pile base and a contact of the charging gun or not and outputting a high level or a low level through the on and off of an optocoupler;
and by utilizing the resistance value change between the charging pile base and the contact of the charging gun, the high level or the low level is output through the on and off of the optocoupler, and whether the electromagnetic lock of the charging gun is opened or not is judged.
Detecting whether a charging gun is in place or not through a remote signaling input loop 1, wherein in a state that the charging gun is not in place, no potential difference exists between a CC1 contact and a PE contact, a light emitting diode in an optical coupler E1 does not emit light, a phototriode is cut off, and a remote signaling output end is in a high level; when the charging gun is reset, a resistor between the CC1 contact and the PE contact is connected into the remote signaling input loop 1, the resistor is divided, potential difference is generated at two ends of the light emitting diode, the light emitting diode emits light, the phototriode is conducted, and the remote signaling output end is at a low level. Through the loop, the resistor between the CC1 and the PE contact is utilized to generate a remote signaling signal to judge whether the charging gun is reset.
Detecting the switch state of an electromagnetic lock in a charging gun through a remote signaling input loop 2, when the electromagnetic lock of the charging gun is started, the resistance value between CC1 and PE is infinite, the voltage of the end of CC1 is 12V, namely the base voltage of a triode Q1 is 12V, the emitter voltage of the triode is 10V, the emitter voltage is lower than the base voltage, the triode is cut off, no signal is output to the remote signaling input loop 2, and the output end is high level; when the electromagnetic lock of the charging gun is closed, the resistance between CC1 and PE is R2, the voltage of the end of CC1 is 6V, the voltage of the emitter electrode of the triode Q1 is higher than the voltage of the base electrode, the triode is conducted, a 12V voltage signal is output to the remote signaling input loop 2, and the output end is low level.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. An electric charging gun homing detection circuit, characterized in that the detection circuit comprises:
a contact signal input circuit, a micro-switch detection circuit, a remote signaling input circuit 1 and a remote signaling input circuit 2 are arranged in the charging pile, and the micro-switch detection circuit is connected with the remote signaling input circuit 2;
when the charging gun is reset, the contact signal input circuit is respectively connected with the micro switch detection circuit and the remote signaling input circuit 1;
the remote signaling input circuit 1 detects whether the charging gun is in place or not by utilizing the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 1, and the remote signaling input circuit 2 detects the switching state of an electromagnetic lock in the charging gun by utilizing the change of the resistance between the contact point between the contact signal input circuit and the remote signaling input circuit 2;
the circuit structure of the remote signaling input loop 1 is as follows:
the CC1 contact is connected with a resistor R7, the other end of the resistor R7 is connected with a diode VD1, a capacitor C2 and a 1 st pin of an optocoupler E1, the diode VD1, the capacitor C2 and a 2 nd pin of the optocoupler E1 are connected with a resistor R8, the other end of the resistor R8 is connected with a PE contact, and a 4 th pin of the E1 is connected with an EKI1 output end and the capacitor C1;
in the state that the charging gun is not reset, no potential difference exists between the CC1 contact and the PE contact, the light emitting diode in the optocoupler E1 does not emit light, the phototriode is cut off, and the remote signaling output end is at a high level; when the charging gun is reset, a resistor between the CC1 contact and the PE contact is connected into the remote signaling input loop 1, the resistor is divided, potential difference is generated at two ends of the light emitting diode, the light emitting diode emits light, the phototriode is conducted, and the remote signaling output end is at a low level.
2. The electrical gun homing detection circuit of claim 1, wherein the charging post is a dc charging post or an ac charging post.
3. The electric gun homing detection circuit of claim 1, wherein the contact signal input circuit structure is:
for the direct-current charging pile, the CC1 contact is connected with resistors R1 and R2, the other end of the R1 is connected with 12V voltage, the other end of the R2 is connected with a micro switch S, and the other end of the micro switch S is connected with a PE contact;
for the alternating-current charging pile, the contacts are a CP signal contact and a PE signal contact, the CP contact is connected with a resistor R1, the other end of the resistor R1 is connected with a micro switch S1, the S1 is also connected with 12V voltage and PWM signals, and the PE is grounded.
4. The electric gun homing detection circuit according to claim 1, wherein the circuit structure of the remote signaling input circuit 2 is as follows:
the CC1 contact is connected with the base electrode of the triode Q1, the PE contact is connected with the resistor R10, the other end of the resistor R10 is connected with the resistor R9 and the emitter electrode of the Q1, the other end of the resistor R9 is connected with 12V voltage, the collector electrode of the Q1 is connected with the diode VD2, the capacitor C3 and the 1 st pin of the optocoupler E2, the diode VD2, the capacitor C3 and the 2 nd pin of the optocoupler E2 are connected with the PE contact, and the 4 th pin of the E2 is connected with the EKI2 output end and the capacitor C4.
5. The electric charging gun homing detection circuit of claim 4, wherein when the electromagnetic lock of the charging gun is turned on, the resistance value between CC1 and PE is infinite, the voltage of the CC1 end is 12V, namely the base voltage of the triode Q1 is 12V, the emitter voltage of the triode is 10V, the emitter voltage is lower than the base voltage, the triode is turned off, no signal is output to the remote signaling input loop 2, and the output end is high level; when the electromagnetic lock of the charging gun is closed, the resistance between CC1 and PE is R2, the voltage of the end of CC1 is 6V, the voltage of the emitter electrode of the triode Q1 is higher than the voltage of the base electrode, the triode is conducted, a 12V voltage signal is output to the remote signaling input loop 2, and the output end is low level.
6. A method of homing detection of a charging gun by use of the detection circuit of any one of claims 1-5, the method comprising the operations of:
whether the charging gun is reset or not is judged by utilizing whether a potential difference is generated by voltage division of a resistor between a charging pile base and a contact of the charging gun or not and outputting a high level or a low level through the on and off of an optocoupler;
and by utilizing the resistance value change between the charging pile base and the contact of the charging gun, the high level or the low level is output through the on and off of the optocoupler, and whether the electromagnetic lock of the charging gun is opened or not is judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283733.6A CN111452640B (en) | 2020-04-13 | 2020-04-13 | Electric charging gun homing detection circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283733.6A CN111452640B (en) | 2020-04-13 | 2020-04-13 | Electric charging gun homing detection circuit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111452640A CN111452640A (en) | 2020-07-28 |
| CN111452640B true CN111452640B (en) | 2023-04-28 |
Family
ID=71674986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010283733.6A Active CN111452640B (en) | 2020-04-13 | 2020-04-13 | Electric charging gun homing detection circuit and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111452640B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179665B (en) * | 2021-12-31 | 2024-01-30 | 上海洛轲智能科技有限公司 | Charging gun electronic lock control method, device, equipment and computer storage medium |
| DE102022132414A1 (en) | 2022-12-06 | 2024-06-06 | Webasto SE | Holder for a charging plug and charging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009206095A (en) * | 2009-01-28 | 2009-09-10 | Toshitaka Kobayashi | Disengagement detecting receptacle |
| CN107394861A (en) * | 2017-09-06 | 2017-11-24 | 广东绿网新能源科技有限公司 | A kind of charging plug position monitoring device and the energy storage control method based on the device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2246161C1 (en) * | 2003-06-09 | 2005-02-10 | Открытое акционерное общество "Чебоксарский электроаппаратный завод" | Device for protection of electrical installations against abnormal operating conditions |
| JP2014045632A (en) * | 2012-08-29 | 2014-03-13 | Nichicon Corp | Power supply system and power supply device for use therein |
| CN203572931U (en) * | 2013-11-18 | 2014-04-30 | 深圳市易能电气技术有限公司 | Detection feedback circuit |
| CN104950204B (en) * | 2015-06-30 | 2017-08-11 | 郑州日产汽车有限公司 | National standard charging gun signal supervisory instrument |
| CN206517091U (en) * | 2017-01-09 | 2017-09-22 | 深圳市深泰明科技有限公司 | A kind of direct-current charging post controller and charging pile control system |
| CN107244252B (en) * | 2017-06-23 | 2023-06-13 | 青岛特来电新能源科技有限公司 | Circuit for indicating state of AC/DC charging gun |
| CN107733039B (en) * | 2017-11-13 | 2024-05-28 | 合肥澎湃能源技术有限公司 | Detection device and method for charger of automobile |
| CN209086312U (en) * | 2018-09-10 | 2019-07-09 | 深圳市永联科技股份有限公司 | A kind of CP detection circuit applied to alternating current charging stake |
-
2020
- 2020-04-13 CN CN202010283733.6A patent/CN111452640B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009206095A (en) * | 2009-01-28 | 2009-09-10 | Toshitaka Kobayashi | Disengagement detecting receptacle |
| CN107394861A (en) * | 2017-09-06 | 2017-11-24 | 广东绿网新能源科技有限公司 | A kind of charging plug position monitoring device and the energy storage control method based on the device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111452640A (en) | 2020-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111452640B (en) | Electric charging gun homing detection circuit and method | |
| CN101694978B (en) | Remote start-stop control circuit of motor | |
| CN204178188U (en) | A kind of standby zero power consumption circuit and washing machine | |
| CN214473595U (en) | Detection circuit and household appliance | |
| CN103713232A (en) | Intelligent alarm capable of preventing battery reverse polarity | |
| EP2879152A1 (en) | Relay welding detector, relay equipment incorporating the same, and relay welding detecting method | |
| CN102570198B (en) | Human body induction energy-saving electric shock preventing socket | |
| CN110635459A (en) | Double-path check residual voltage locking method and circuit | |
| CN105553245B (en) | Soft start circuit | |
| CN101557094B (en) | Disconnection auto-action or alarm circuit of external residual current transformer | |
| CN104425998A (en) | Power socket and electric shock prevention circuit thereof | |
| CN104242252A (en) | Battery over-discharge protecting circuit | |
| CN109932673A (en) | A kind of transformer disconnection detection circuit of breaker | |
| CN211702011U (en) | Relay control device and electrical apparatus | |
| CN101950942B (en) | Short-circuit protection and anti-lightning circuit for plasma equipment | |
| US10404184B1 (en) | Relay adaptive to alternative current and direct current input signals | |
| CN103378593A (en) | Electric supply zero fire wire identification circuit | |
| CN208092205U (en) | A kind of closed-loop detection circuit for detecting relay output state | |
| CN218997685U (en) | Inverter input overvoltage protection circuit | |
| CN101902867A (en) | Protection circuit for electronic ballast | |
| CN105403756A (en) | Circuit device having ground wire live detection function | |
| CN201657469U (en) | Electronic ballast protection circuit | |
| CN102543604B (en) | Direct current shunt release applicable to operation in series connection with direct current relay | |
| CN1423388A (en) | Motor open-phase protection circuit | |
| CN102645901A (en) | Stand-by circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |