CN113635792B - Control method of single-switch controllable charging interface electronic lock driving circuit - Google Patents
Control method of single-switch controllable charging interface electronic lock driving circuit Download PDFInfo
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- CN113635792B CN113635792B CN202110897256.7A CN202110897256A CN113635792B CN 113635792 B CN113635792 B CN 113635792B CN 202110897256 A CN202110897256 A CN 202110897256A CN 113635792 B CN113635792 B CN 113635792B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 61
- 238000004146 energy storage Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 208000037408 Device failure Diseases 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
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- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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- 206010014357 Electric shock Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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Classifications
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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
- B60L53/10—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
- B60L53/60—Monitoring or controlling charging stations
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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
-
- 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
Abstract
The invention provides a control method of a single-switch controllable charging interface electronic lock driving circuit, which belongs to the technical field of electric automobile charging equipment, and comprises a power converter, a switch circuit, a storage circuit and a charging control circuit, wherein the switch circuit and the charging control circuit are both connected with the output end of the power converter, the storage circuit is connected with the switch circuit, the anode and the cathode of the input end of the power converter are electrically connected with an external transmission wire, and the cathode of the output end of the power converter is grounded; this not only saves the added hardware and software development costs of the microcontroller or other logic controller and its peripheral circuitry, but also reduces the risk of device failure due to microcontroller or other logic controller and software anomalies.
Description
Technical Field
The invention belongs to the technical field of electric automobile charging equipment, and particularly relates to a control method of a single-switch controllable charging interface electronic lock driving circuit.
Background
The electric automobile charging equipment consists of a power supply device and a charging interface, wherein the charging interface of the alternating current charging equipment is an alternating current charging gun, and the charging interface of the direct current charging equipment is a direct current charging gun. When the charging equipment works, the alternating current or direct current charging gun is connected with an alternating current or direct current gun seat of the electric automobile, and the power supply charges the electric automobile through the alternating current or direct current charging gun. The unexpected disconnection of the charging interface in the charging process not only can cause abnormal suspension of the charging process, but also can cause the carrying disconnection of the charging interface, thereby affecting the safety of the charging equipment and the electric automobile, and possibly causing accidents such as fire disaster, electric shock injury and the like in serious cases. Therefore, the charging interface of the high-power ac charging device and the dc charging device must have an electronic lock function.
The electronic lock of the charging interface is controlled by two control lines LA, LB. The high level of the control signal is 12V, and the low level is 0V. LA-lb=12v, electronic lock action; when LA-LB= -12V, the unlocking action of the electronic lock; other control signal electronic locks keep the original state; in addition, in order to protect the electronic lock from damage, it is generally required that the power-on time of the electronic lock cannot exceed 3 seconds.
Depending on the control characteristics of the electronic lock, a separate drive circuit needs to be designed for the electronic lock. The charging controller controls the operation of the electronic lock through the driving circuit. Currently, most driving circuits use two-way switching signals. The driving circuit is powered by a 12V direct current power supply, one pulse signal is used for controlling the power supply of the electronic lock, and the other switch signal is used for controlling the power supply direction of the power supply. The scheme needs to occupy two paths of control signals, and wastes hardware resources of the charging controller. At present, a driving circuit with single switch control is also provided, and the scheme is that a microcontroller or other logic controllers on the driving circuit are used for converting one path of switch signals of a charging controller into two paths of switch signals to respectively control the power supply of the electronic lock and the power supply direction of the power supply. This approach, while reducing the resource occupation of the charge controller, increases the complexity of the drive circuitry, increasing the risk and cost of the drive circuitry.
Disclosure of Invention
The embodiment of the invention provides a control method of a single-switch controllable charging interface electronic lock driving circuit, which aims to solve the problems that the prior charging interface electronic lock driving circuit has excessive occupation of charging controller resources by a double-circuit switch signal mode, and the driving circuit is increased in risk and cost due to the fact that one switch signal of the charging controller is converted into two switch signals by a microcontroller or other logic controllers to respectively control the power supply of the electronic lock and the power supply direction driving circuit of the power supply.
In view of the above problems, the technical scheme provided by the invention is as follows:
the control method of the single-switch controllable charging interface electronic lock driving circuit comprises a power converter, a switch circuit, an energy storage circuit and a charging control circuit, wherein the switch circuit and the charging control circuit are both connected with the output end of the power converter, the energy storage circuit is connected with the switch circuit, the positive electrode and the negative electrode of the input end of the power converter are electrically connected with an external transmission wire, and the negative electrode of the output end of the power converter is grounded;
the switching circuit comprises a relay K1B, a relay K2B, a relay K3B, a diode D1 and a diode D2, wherein a 3 rd pin of the relay K1B is electrically connected with the positive electrode of the power converter, a 4 th pin and a 5 th pin of the relay K1B are electrically connected with the diode D1 and the anode of the diode D2, a 5 th pin of the relay K1B is electrically connected with the anode of the diode D2, the cathode of the diode D1 is electrically connected with a 5 th pin of the relay K2B, the cathode of the diode D2 is electrically connected with a 4 th pin of the relay K3B, a 3 rd pin of the relay K2B is electrically connected with the electronic lock control line LA, and a 3 rd pin of the relay K3B is electrically connected with the electronic lock control line LB;
the energy storage circuit comprises a capacitor C1 and a capacitor C2, wherein the anode of the capacitor C1 is electrically connected between the diode D1 and the relay K2B, and the anode of the capacitor C1 is electrically connected between the diode D1 and the relay K2B;
the control method applied to the driving circuit comprises the steps that an external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to unlock the electronic lock, and an external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered on so as to lock the electronic lock;
the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to unlock the electronic lock specifically comprises the following steps: when an external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be powered off, the 3 rd pin and the 4 th pin of the relay K1B, the relay K2B and the relay K3B are in a closed state, a power supply is closed through the 3 rd pin and the 4 th pin of the relay K1B, and the diode D1 charges the capacitor C1, and meanwhile, the capacitor C2 is respectively powered on to the electronic lock control wire LA and the electronic lock control wire LB through the 3 rd pin and the 4 th pin of the relay K2B, so that the electronic lock can be unlocked;
the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to lock the electronic lock specifically comprises the following steps: when an external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be electrified, the relay K1B, the relay K2B and the relay K3B switch contacts, the relay K1B, the relay K2B and the 3 rd pin of the relay K3B are switched to form a closed state with the 5 th pin, a power supply is closed with the 5 rd pin of the relay K1B through the 3 rd pin of the relay K1B and the 5 th pin, and the diode D2 charges the capacitor C2, and meanwhile, the capacitor C1 is respectively used for transmitting power to the electronic lock control line LA and the electronic lock control line LB through the 3 rd pin of the relay K2B and the 3 rd pin of the relay K3B.
As a preferable solution of the present invention, the 4 th pin of the relay K2B, the 5 th pin of the relay K3B, the negative electrode of the capacitor C1, and the negative electrode of the capacitor C2 are all grounded.
As a preferred technical scheme of the invention, the charging control circuit comprises a relay K1A, a relay K2A, a relay K3A and a charging controller, wherein the 2 nd pin and the 1 st pin of the relay K3A are respectively connected with the relay K2A and the relay K1A in parallel, the 2 nd pin of the relay K3A is electrically connected with the positive electrode of the power converter through the charging controller, and the 1 st pin of the relay K3A is grounded, or the 1 st pin of the relay K3A is grounded through the charging controller.
As a preferred technical solution of the present invention, the control method of the driving circuit further includes a step of controlling the charging controller to be powered off by a charging device input control signal to unlock the electronic lock, and a step of controlling the charging controller to be powered off by the charging device input control signal to unlock the electronic lock specifically includes: charging equipment to charging control ware input pulse control signal makes charging control ware disconnection, relay K1A relay K2A with relay K3A outage, relay K1B relay K2B with relay K3B's 3 rd pin all is closed with 4 th pin, and power supply passes through relay K1B's 3 rd pin and 4 th pin are closed and diode D1 charge to electric capacity C1, simultaneously, electric capacity C2 passes through relay K2B with relay K3B's 3 rd pin and 4 rd pin are closed respectively to electronic lock control line LA and electronic lock control line LB, can make the electronic lock unblock.
As a preferred technical solution of the present invention, the control method of the driving circuit further includes a charging device input control signal controlling the charging controller to be electrified to lock the electronic lock, and the charging device input control signal controlling the charging controller to be electrified to lock the electronic lock specifically includes: the charging equipment inputs pulse control signals to the charging controller to enable the charging controller to be closed, the relay K1A, the relay K2A and the relay K3A are electrified, the relay K1B, the relay K2B and the relay K3B conduct contact switching actions, the relay K1B, the relay K2B and the 3 rd pin of the relay K3B are switched to form a closed state with the 5 th pin, a power supply is closed through the 3 rd pin and the 5 th pin of the relay K1B, the diode D2 charges the capacitor C2, and meanwhile, the capacitor C1 is respectively powered to the electronic lock control line LA and the electronic lock control line LB through the closing of the 3 rd pin and the 5 th pin of the relay K2B, so that the electronic lock can be locked.
As a preferable technical scheme of the invention, the dc power supply voltage of the driving circuit is 12V.
As a preferable embodiment of the present invention, the rated voltage of the relay K1B, the rated voltage of the relay K2B, and the rated voltage of the relay K3B are 12V.
As a preferable technical scheme of the inventionThe rated voltage U of the capacitor C1 C1 The DC power supply voltage U should be greater than or equal to VCC Forward conduction voltage U with diode D1 D1 Is the difference of U C1 ≥U VCC - U D1 The rated voltage of the capacitor C2 is the same as the rated voltage of the capacitor C1.
Compared with the prior art, the invention has the beneficial effects that: the invention realizes the unlocking and locking actions of the electronic lock driven by a single switch signal under the condition of not using a microcontroller or other logic control devices. Compared with a driving circuit with controllable two paths of switch signals, the invention reduces the occupation of hardware resources of the charging controller, and has more obvious advantages on charging equipment with a plurality of charging interfaces. Compared with a driving circuit which needs to use a microcontroller or other logic controllers, the electronic lock can be driven by a single switch signal by using a plurality of relays, diodes and capacitors; this not only saves the added hardware and software development costs of the microcontroller or other logic controller and its peripheral circuitry, but also reduces the risk of device failure due to microcontroller or other logic controller and software anomalies.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
FIG. 1 is a schematic circuit diagram of a method for controlling a single-switch controllable charging interface electronic lock driving circuit;
fig. 2 is a schematic circuit diagram of an embodiment 5 of a single-switch controllable charging interface electronic lock driving circuit according to the present invention.
Reference numerals illustrate: 10. a driving circuit; 11. a power converter; 12. a switching circuit; 13. a tank circuit; 14. a charge control circuit; 15. and a charge controller.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples
Referring to fig. 1-2, the invention provides a technical scheme that: a control method of a single-switch controllable charging interface electronic lock driving circuit comprises the following steps that the driving circuit 10 comprises a power converter 11, a switch circuit 12, an energy storage circuit 13 and a charging control circuit 14, the switch circuit 12 and the charging control circuit 14 are connected with the output end of the power converter 11, the energy storage circuit 13 is connected with the switch circuit 12, the positive electrode and the negative electrode of the input end of the power converter 11 are electrically connected with an external transmission wire, and the negative electrode of the output end of the power converter 11 is grounded.
The switch circuit 12 comprises a relay K1B, a relay K2B, a relay K3B, a diode D1 and a diode D2, a 3 rd pin of the relay K1B is electrically connected with the positive electrode of the power converter 11, a 4 th pin and a 5 th pin of the relay K1B are electrically connected with anodes of the diode D1 and the diode D2, a 5 th pin of the relay K1B is electrically connected with anodes of the diode D2, a cathode of the diode D1 is electrically connected with a 5 th pin of the relay K2B, a cathode of the diode D2 is electrically connected with a 4 th pin of the relay K3B, a 3 rd pin of the relay K2B is electrically connected with the electronic lock control line LA, the energy storage circuit 13 comprises a capacitor C1 and a capacitor C2, the positive electrode of the capacitor C1 is electrically connected between the diode D1 and the relay K2B, the cathode of the diode D1 is electrically connected with a 4 th pin of the relay K3B, the 3 rd pin of the relay K2B is electrically connected with the power converter 1A 2, the negative electrode of the capacitor C1A 2A is electrically connected with the power converter 2A 2, and the negative electrode of the power converter 2A 1 is electrically connected with the positive electrode of the power converter 2A 2, and the power converter 15A 2 is electrically connected with the positive electrode of the power converter 2A 2.
Of course, the power conversion section is optional, and when the external power supply is a 12V dc power supply, the external power supply may be used to directly power the driving circuit 10, and when other power supplies are used, the power converter 11 outputting 12V dc power should be selected to power the driving circuit 10.
The polarities of the capacitor C1 and the capacitor C2 are different when the capacitor C1 is electrified, so that the unlocking and locking functions of the electronic lock can be respectively realized in the discharging process; in addition, the capacitor C1 and the capacitor C2 which drive the electronic lock to act are derived from a power supply instead of a power supply, and the capacitor C1 and the capacitor C2 stop power supply due to electric quantity exhaustion after discharging the electronic lock for a period of time, so that the electronic lock can be protected from being damaged due to time power supply.
The dc power supply voltage of the driving circuit 10 was 12V, and the rated voltages of the relays K1B, K2B, and K3B were 12V.
According to the preferred embodiment of the invention, the rated voltage U of the capacitor C1 C1 The DC power supply voltage U should be greater than or equal to VCC Forward conduction voltage U with diode D1 D1 Is the difference of U C1 ≥U VCC - U D1 The rated voltage of the capacitor C2 is the same as the rated voltage of the capacitor C1.
In some embodiments, the capacitor C1 and the capacitor C2 of the stored energy may also be composed of a plurality of capacitors connected in series or in parallel.
In another embodiment, the 3 rd pin of the relay K2B is electrically connected to the electronic lock control line LB, and the 3 rd pin of the relay K3B is electrically connected to the electronic lock control line LA; at this time, the electronic lock is locked when the signal of the charge controller 15 is off, and is unlocked otherwise.
The control method applied to the driving circuit 10 includes that the relay K1B, the relay K2B and the relay K3B are controlled to be powered off by an external input control signal to unlock the electronic lock, the relay K1B, the relay K2B and the relay K3B are controlled to be powered on by the external input control signal to lock the electronic lock, the charging controller 15 is controlled to be powered off by a charging device input control signal to unlock the electronic lock, and the charging controller 15 is controlled to be powered on by the charging device input control signal to lock the electronic lock.
Example 1: the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off, so that the electronic lock is unlocked specifically: when the external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be powered off, the 3 rd pins and the 4 th pins of the relay K1B, the relay K2B and the relay K3B are in a closed state, a power supply is closed through the 3 rd pin and the 4 th pin of the relay K1B, and the diode D1 charges the capacitor C1, and meanwhile, the capacitor C2 is closed through the 3 rd pin and the 4 th pin of the relay K2B to transmit power to the electronic lock control line LA and the electronic lock control line LB respectively, so that the electronic lock can be unlocked.
Example 2: the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off, so that the electronic lock is locked specifically: when an external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be electrified, the relay K1B, the relay K2B and the relay K3B conduct contact switching actions, the 3 rd pins of the relay K1B, the relay K2B and the relay K3B are switched to form a closed state with the 5 th pin, a power supply is closed with the 5 th pin of the relay K1B through the 3 rd pin of the relay K1B and the diode D2 to charge the capacitor C2, and meanwhile, the capacitor C1 is respectively used for transmitting power to the electronic lock control line LA and the electronic lock control line LB through the 3 rd pin of the relay K2B and the 3 rd pin of the relay K3B.
Example 3: the charging equipment input control signal controls the charging controller 15 to be powered off so as to unlock the electronic lock specifically comprises: the charging equipment inputs pulse control signals to the charging controller 15 to enable the charging controller 15 to be disconnected, the relay K1A, the relay K2A and the relay K3A are powered off, the 3 rd pins of the relay K1B, the relay K2B and the relay K3B are all closed with the 4 th pin, the power supply is closed with the 4 rd pin through the 3 rd pin of the relay K1B and the diode D1 is used for charging the capacitor C1, and meanwhile, the capacitor C2 is respectively used for transmitting power to the electronic lock control line LA and the electronic lock control line LB through the 3 rd pin and the 4 rd pin of the relay K2B, so that the electronic lock can be unlocked.
Example 4: the charging device input control signal controls the charging controller 15 to be electrified so that the electronic lock is locked specifically as follows: the charging equipment inputs pulse control signals to the charging controller 15 to enable the charging controller 15 to be closed, the relay K1A, the relay K2A and the relay K3A are electrified, the relay K1B, the relay K2B and the relay K3B conduct contact switching actions, the 3 rd pins of the relay K1B, the relay K2B and the relay K3B are switched to form a closed state with the 5 th pin, the power supply is connected with the 5 th pin through the 3 rd pin and the 5 th pin of the relay K1B, the diode D2 is used for charging the capacitor C2, and meanwhile, the capacitor C1 is connected with the 5 th pin through the 3 rd pin and the 5 th pin of the relay K2B to transmit power to the electronic lock control line LA and the electronic lock control line LB respectively, so that the electronic lock can be locked.
Example 5: referring to fig. 2, pin 1 of relay K3A is grounded through charge controller 15; in practical use, the effect achieved is the same as that of example 3 and example 4, and therefore will not be described in detail here.
The above-mentioned one or more technical solutions in the embodiments of the present application at least have one or more of the following technical effects:
the invention realizes the unlocking and locking actions of the electronic lock driven by a single switch signal under the condition of not using a microcontroller or other logic control devices. Compared with a driving circuit with controllable two paths of switch signals, the invention reduces the occupation of hardware resources of the charging controller, and has more obvious advantages on charging equipment with a plurality of charging interfaces. Compared with a driving circuit which needs to use a microcontroller or other logic controllers, the electronic lock can be driven by a single switch signal by using a plurality of relays, diodes and capacitors; this not only saves the added hardware and software development costs of the microcontroller or other logic controller and its peripheral circuitry, but also reduces the risk of device failure due to microcontroller or other logic controller and software anomalies.
It should be noted that, the model specifications of the power converter 11, the relay K1A, the relay K2A, the relay K3A, the relay K1B, the relay K2B, the relay K3B, the diode D1, the diode D2, the capacitor C1, the capacitor C2, and the charging controller 15 need to be determined by selecting the model according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, so that detailed description is omitted.
The power supply and the principle of the power converter 11, the relay K1A, the relay K2A, the relay K3A, the relay K1B, the relay K2B, the relay K3B, the diode D1, the diode D2, the capacitor C1, the capacitor C2, and the charge controller 15 are clear to those skilled in the art, and will not be described in detail herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The control method of the single-switch controllable charging interface electronic lock driving circuit is characterized in that the driving circuit comprises a power converter, a switch circuit, an energy storage circuit and a charging control circuit, wherein the switch circuit and the charging control circuit are both connected with the output end of the power converter, the energy storage circuit is connected with the switch circuit, the positive electrode and the negative electrode of the input end of the power converter are electrically connected with an external transmission wire, and the negative electrode of the output end of the power converter is grounded;
the switching circuit comprises a relay K1B, a relay K2B, a relay K3B, a diode D1 and a diode D2, wherein a 3 rd pin of the relay K1B is electrically connected with the positive electrode of the power converter, a 4 th pin and a 5 th pin of the relay K1B are electrically connected with the diode D1 and the anode of the diode D2, a 5 th pin of the relay K1B is electrically connected with the anode of the diode D2, the cathode of the diode D1 is electrically connected with a 5 th pin of the relay K2B, the cathode of the diode D2 is electrically connected with a 4 th pin of the relay K3B, a 3 rd pin of the relay K2B is electrically connected with the electronic lock control line LA, and a 3 rd pin of the relay K3B is electrically connected with the electronic lock control line LB;
the energy storage circuit comprises a capacitor C1 and a capacitor C2, wherein the anode of the capacitor C1 is electrically connected between the diode D1 and the relay K2B, and the anode of the capacitor C2 is electrically connected between the diode D2 and the relay K3B;
the 4 th pin of the relay K2B, the 5 th pin of the relay K3B, the negative electrode of the capacitor C1 and the negative electrode of the capacitor C2 are all grounded;
the control method applied to the driving circuit comprises the steps that an external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to unlock the electronic lock, and an external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered on so as to lock the electronic lock;
the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to unlock the electronic lock specifically comprises the following steps: when an external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be powered off, the 3 rd pin and the 4 th pin of the relay K1B, the relay K2B and the relay K3B are in a closed state, a power supply is closed through the 3 rd pin and the 4 th pin of the relay K1B, and the diode D1 charges the capacitor C1, and meanwhile, the capacitor C2 is respectively powered on to the electronic lock control wire LA and the electronic lock control wire LB through the 3 rd pin and the 4 th pin of the relay K2B, so that the electronic lock can be unlocked;
the external input control signal controls the relay K1B, the relay K2B and the relay K3B to be powered off so as to lock the electronic lock specifically comprises the following steps: when an external power transmission wire inputs a control signal to control the relay K1B, the relay K2B and the relay K3B to be electrified, the relay K1B, the relay K2B and the relay K3B switch contacts, the relay K1B, the relay K2B and the 3 rd pin of the relay K3B are switched to form a closed state with the 5 th pin, a power supply is closed with the 5 rd pin of the relay K1B through the 3 rd pin of the relay K1B and the 5 th pin, and the diode D2 charges the capacitor C2, and meanwhile, the capacitor C1 is respectively used for transmitting power to the electronic lock control line LA and the electronic lock control line LB through the 3 rd pin of the relay K2B and the 3 rd pin of the relay K3B.
2. The method for controlling the single-switch controllable charging interface electronic lock driving circuit according to claim 1, wherein the charging control circuit comprises a relay K1A, a relay K2A, a relay K3A and a charging controller, a 2 nd pin and a 1 st pin of the relay K3A are respectively connected with the relay K2A and the relay K1A in parallel, a 2 nd pin of the relay K3A is electrically connected with an anode of the power converter through the charging controller, and a 1 st pin of the relay K3A is grounded, or a 1 st pin of the relay K3A is grounded through the charging controller.
3. The method for controlling a single-switch controllable charging interface electronic lock driving circuit according to claim 2, wherein the method for controlling the driving circuit further comprises the step of controlling the charging controller to be powered off by a charging device input control signal to unlock the electronic lock, and the step of controlling the charging controller to be powered off by the charging device input control signal to unlock the electronic lock specifically comprises the following steps: charging equipment to charging control ware input pulse control signal makes charging control ware disconnection, relay K1A relay K2A with relay K3A outage, relay K1B relay K2B with relay K3B's 3 rd pin all is closed with 4 th pin, and power supply passes through relay K1B's 3 rd pin and 4 th pin are closed and diode D1 charge to electric capacity C1, simultaneously, electric capacity C2 passes through relay K2B with relay K3B's 3 rd pin and 4 rd pin are closed respectively to electronic lock control line LA and electronic lock control line LB, can make the electronic lock unblock.
4. The method for controlling a single-switch controllable charging interface electronic lock driving circuit according to claim 3, wherein the method for controlling the driving circuit further comprises a step of controlling the charging controller to be electrified by a charging device input control signal so as to lock the electronic lock, and the step of controlling the charging controller to be electrified by the charging device input control signal so as to lock the electronic lock specifically comprises the following steps: the charging equipment inputs pulse control signals to the charging controller to enable the charging controller to be closed, the relay K1A, the relay K2A and the relay K3A are electrified, the relay K1B, the relay K2B and the relay K3B conduct contact switching actions, the relay K1B, the relay K2B and the 3 rd pin of the relay K3B are switched to form a closed state with the 5 th pin, a power supply is closed through the 3 rd pin and the 5 th pin of the relay K1B, the diode D2 charges the capacitor C2, and meanwhile, the capacitor C1 is respectively powered to the electronic lock control line LA and the electronic lock control line LB through the closing of the 3 rd pin and the 5 th pin of the relay K2B, so that the electronic lock can be locked.
5. The method for controlling a single-switch controllable charging interface electronic lock driving circuit according to claim 1, wherein the dc power supply voltage of the driving circuit is 12V.
6. The method for controlling a single-switch controllable charging interface electronic lock driving circuit according to claim 1, wherein rated voltages of the relay K1B, the relay K2B and the relay K3B are 12V.
7. The method for controlling a single-switch controllable charging interface electronic lock driving circuit according to claim 1, wherein the rated voltage U of the capacitor C1 is C1 The DC power supply voltage U should be greater than or equal to VCC Forward conduction voltage U with diode D1 D1 Is the difference of U C1 ≥U VCC - U D1 The rated voltage of the capacitor C2 is the same as the rated voltage of the capacitor C1.
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