CN116624027A - Control method, device, equipment and medium for electronic lock of electric automobile - Google Patents

Control method, device, equipment and medium for electronic lock of electric automobile Download PDF

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Publication number
CN116624027A
CN116624027A CN202310602546.3A CN202310602546A CN116624027A CN 116624027 A CN116624027 A CN 116624027A CN 202310602546 A CN202310602546 A CN 202310602546A CN 116624027 A CN116624027 A CN 116624027A
Authority
CN
China
Prior art keywords
electronic lock
vehicle
charging
signal
mounted charger
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.)
Pending
Application number
CN202310602546.3A
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Chinese (zh)
Inventor
杨坤龙
王以华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN202310602546.3A priority Critical patent/CN116624027A/en
Publication of CN116624027A publication Critical patent/CN116624027A/en
Pending legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/005—Opening, closing of the circuit
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0067—Monitoring
    • 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

Abstract

The application provides a control method, a device, equipment and a medium for an electronic lock of an electric automobile. The method comprises the following steps: in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle, and the motor of the electronic lock is controlled to positively rotate for locking according to the locking signal; if a first preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully locked; when charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger, and the motor of the electronic lock is controlled to reversely unlock according to the unlocking signal; and if the second preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully unlocked. The method can well control the locking and unlocking time of the electronic lock and ensure the charging safety of the electric automobile.

Description

Control method, device, equipment and medium for electronic lock of electric automobile
Technical Field
The application relates to the field of intelligent automobiles, in particular to a control method, a device, equipment and a medium for an electronic lock of an electric automobile.
Background
With the development of new energy technology, more and more electric automobiles are popularized, and more high-power vehicle-mounted chargers are in the market for improving the alternating current charging efficiency and speed; for example, the mainstream charger products in the market are 6.6KW, and 11KW charger products also enter the research and development stage, and have a trend of forming mainstream in the future, so that the power supply device has to take into consideration charging safety.
The existing charging safety guaranteeing mode is generally to set a falling-off preventing grabbing clamp at a charging port of a charger product on an electric automobile, so that the situation that an interface between the charger product and power supply equipment (such as a charging pile) is difficult to fall off and the like possibly causes safety problems during charging is guaranteed. However, such a handling is not convenient and intelligent enough and sometimes the grip may not be stable enough, resulting in an insufficient safety of the charging process.
Therefore, the application provides an electronic lock control method capable of increasing safety so as to safely control the charging process.
Disclosure of Invention
The application provides a control method, a device, equipment and a medium for an electric lock of an electric automobile, which are used for solving the problem that the charging process of the electric automobile is not safe enough in the prior art.
In a first aspect, the present application provides a control method for an electronic lock of an electric automobile, including:
in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle, and the motor of the electronic lock is controlled to positively rotate for locking according to the locking signal;
if a first preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully locked;
when charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger, and the motor of the electronic lock is controlled to reversely unlock according to the unlocking signal;
and if the second preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully unlocked.
In one possible implementation manner, in the charging process, a locking signal is sent to the electronic lock by a vehicle-mounted charger of the vehicle, and the electronic lock motor is controlled to lock in a forward rotation manner according to the locking signal, which includes:
the vehicle is confirmed to be in the charging process through a charging signal received by the vehicle-mounted charger, and the charging signal is sent out by a battery management system;
in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the locking signal, the neutral point of the electronic lock is grounded, the live wire is connected with a positive voltage, and the motor of the electronic lock is controlled to positively rotate for locking.
In one possible implementation manner, when the charging is completed, the vehicle-mounted charger sends an unlocking signal to the electronic lock, and the electronic lock motor is controlled to reversely unlock according to the unlocking signal, which includes:
the vehicle charging completion is confirmed through a charging stopping signal received by the vehicle-mounted charger, and the charging stopping signal is sent by a battery management system;
when the charging is completed, an unlocking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the unlocking signal, the neutral point of the electronic lock is connected with a positive voltage, and the live wire is connected with the ground, so that the motor of the electronic lock is controlled to reversely unlock.
In one possible implementation manner, after the controlling the electronic lock motor to reversely unlock, the method further includes:
and controlling the neutral point end of the electronic lock to be disconnected through the vehicle-mounted charger, and closing the electronic lock.
In one possible implementation manner, in the charging process, if a first preset level is detected at a ground wire end of the electronic lock, the confirmation of successful locking of the electronic lock includes:
detecting whether the level of the ground terminal of the electronic lock is within a first preset level range;
if the level of the ground terminal of the electronic lock is not in the first preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the first preset level range or not according to the residual detection times after a first preset time interval;
if the level of the ground terminal of the electronic lock is detected to be in the first preset level range in the residual detection times, the successful locking of the electronic lock is confirmed;
correspondingly, when the charging is completed, if the second preset level is detected at the ground wire end of the electronic lock, the confirmation of successful unlocking of the electronic lock includes:
detecting whether the level of the ground terminal of the electronic lock is within a second preset level range;
if the level of the ground terminal of the electronic lock is not in the second preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the second preset level range or not according to the residual detection times after a second preset time interval;
and if the level of the ground terminal of the electronic lock is detected to be in the second preset level range in the residual detection times, confirming that the electronic lock is successfully unlocked.
In one possible implementation manner, if the level of the ground terminal of the electronic lock is not detected within the first preset level range in the remaining detection times, confirming that the electronic lock is faulty;
and if the level of the ground terminal of the electronic lock is not detected within the second preset level range in the residual detection times, confirming that the electronic lock fails.
In one possible implementation manner, if the vehicle-mounted charger receives a charging interruption signal during the charging process, the method further includes:
based on an interrupt charging signal sent by a battery management system, the vehicle-mounted charger reduces charging current to be within a preset current within a preset time threshold, and sends an unlocking signal to the electronic lock until the electronic lock is confirmed to be unlocked or the electronic lock is confirmed to be faulty; the battery management system is controlled by an instrument unlocking switch to send out the charging interruption signal or not, and the instrument unlocking switch is controlled by a driver.
In a second aspect, the present application provides an electronic lock control device for an electric automobile, including:
the first processing module is used for sending a locking signal to the electronic lock through a vehicle-mounted charger of the vehicle in the charging process and controlling the motor of the electronic lock to positively rotate for locking according to the locking signal;
the first judging module is used for confirming that the electronic lock is successfully locked if a preset level is detected at the ground wire end of the electronic lock;
the second processing module is used for sending an unlocking signal to the electronic lock through the vehicle-mounted charger when the charging is completed, and controlling the motor of the electronic lock to reversely unlock according to the unlocking signal;
and the second judging module is used for confirming that the electronic lock is successfully unlocked if the preset level is detected at the ground wire end of the electronic lock.
In a third aspect, the present application provides an electric lock control apparatus for an electric automobile, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored by the memory, so that the at least one processor executes the electric automobile electronic lock control method as described above.
In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the electric vehicle electronic lock control method as described above.
According to the control method, the device, the equipment and the medium for the electronic lock of the electric automobile, in the charging process, a locking signal is sent to the electronic lock through the vehicle-mounted charger of the automobile, and the motor of the electronic lock is controlled to positively rotate to lock according to the locking signal; if a first preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully locked; when charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger, and the motor of the electronic lock is controlled to reversely unlock according to the unlocking signal; and if the second preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully unlocked.
In the method, in the charging process, the electronic lock is indicated to lock through the indication of the locking signal of the vehicle-mounted charger, so that a locking state is formed between the charging port of the vehicle-mounted charger and the power supply port of the power supply equipment, and the falling off is not easy to occur in the charging process, and the charging safety is ensured; after the charging is finished, the electronic lock can be indicated to unlock through the indication of the unlocking signal of the vehicle-mounted charger, so that an operator can smoothly pull the charging port of the vehicle-mounted charger out of the power supply port of the power supply equipment, and the whole charging process is smoothly finished.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a system for controlling an electronic lock of an electric automobile according to an embodiment of the present application;
fig. 2 is a schematic diagram of locking and unlocking control of an electronic lock according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a control method of an electronic lock of an electric automobile according to an embodiment of the present application;
fig. 4 is a schematic flow chart II of a control method of an electronic lock of an electric automobile according to an embodiment of the present application;
fig. 5 is a schematic flow chart III of a control method of an electronic lock of an electric automobile according to an embodiment of the present application;
fig. 6 is a diagram of an electronic lock control device for an electric automobile according to an embodiment of the present application;
fig. 7 is a hardware schematic diagram of an electronic lock control device for an electric automobile according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
With the development of new energy technology, more and more electric automobiles are popularized, and more high-power vehicle-mounted chargers are in the market for improving the alternating current charging efficiency and speed; the module in the electric automobile has abrupt change phenomenon of high voltage and large current in the power-on and power-off processes, and the power-on and power-off operation can be carried out on the related module in the electric automobile in the charging process, so that the charging safety is very concerned in the high-power charging process; if the charging interface drops in the charging process, more abrupt current and voltage changes may be caused, resulting in accidents, and problems are brought to the electric automobile and the operator who charges.
In the charging process of the common vehicle-mounted charger in the prior art, the locking mode between the charging interface of the vehicle-mounted charger and the power supply interface of the power supply equipment is in a clamping mode, so that the charging interface of the vehicle-mounted charger can be fixed to a certain extent, but the risk of being unstable is not enough according to old, and locking and unlocking cannot be controlled intelligently at the most suitable time.
Therefore, the application provides a mode capable of intelligently controlling locking and unlocking of the electronic lock to provide safety guarantee for the charging process of the electric automobile.
The implementation process of the control method of the electric automobile electronic lock provided by the application is described below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a system for controlling an electronic lock of an electric automobile according to an embodiment of the present application. As shown in fig. 1, the system includes: an electronic lock 101 and a vehicle-mounted charger 102; wherein, the liquid crystal display device comprises a liquid crystal display device,
the electronic lock 101 is connected with the vehicle-mounted charger 102, the vehicle-mounted charger 102 is used for sending a locking signal to the electronic lock 101 in the charging process, and the electronic lock 101 is used for controlling the motor of the electronic lock to positively rotate for locking according to the locking signal sent to the electronic lock by the vehicle-mounted charger of the vehicle in the charging process;
in the charging process, when the ground wire end of the electronic lock detects the first preset level, the vehicle-mounted charger 102 confirms that the electronic lock is successfully locked.
The vehicle-mounted charger 102 is used for sending an unlocking signal to the electronic lock 101 when charging is completed, and the electronic lock 101 is used for controlling the motor of the electronic lock to reversely unlock according to the unlocking signal sent by the vehicle-mounted charger to the electronic lock when charging is completed;
when the charging is completed, the vehicle-mounted charger 102 confirms that the unlocking of the electronic lock is successful when the ground wire end of the electronic lock detects a first preset level.
The vehicle-mounted charger 102 can be used for confirming whether the electric vehicle is to be charged or not, if yes, confirming that the electric vehicle is in the charging process, and then sending out a locking signal to complete locking control; after the charging is finished, the electric automobile is confirmed to finish the charging, and then an unlocking signal is sent to finish the unlocking control; the electric automobile can be locked and unlocked in time in the charging process, and charging safety is guaranteed.
In addition to the above connections, the system also includes a battery management system 103 (Battery Management System, BMS), an instrument unlock switch 104, and a power supply device 105 (OBC) for further coordinating the charging of the vehicle; wherein, the liquid crystal display device comprises a liquid crystal display device,
the battery management system 103 is connected with the vehicle-mounted charger 102 through a regional network controller (Controller Area Network, CAN) and is used for sending charging requirements to the vehicle-mounted charger 102; for example, if the electricity of 10A needs to be charged, a charging instruction of 10A is sent to the vehicle-mounted charger 102, and the vehicle-mounted charger 102 confirms to charge after receiving the instruction;
the instrument unlocking switch 104 is respectively connected with the vehicle-mounted charger 102 and the battery management system 103 and is used for controlling whether the vehicle-mounted charger 102 and the battery management system 103 are charged or not; the instrument unlocking switch 104 can be controlled by an operator, and the on-vehicle charger 102 and the battery management system 103 can be instructed to start charging by opening the instrument unlocking switch 104;
the power supply device 105 is connected to a first set of ports of the ac charging interface via a serial communication network (Local Interconnect Network, LIN) and to the electronic lock 101 via a second set of ports of the ac charging interface; the electronic lock 101 is used for controlling the locking and unlocking states between the ac charging interface and the power supply device 105;
the battery management system 103 is coupled to the third set of ports of the ac charging interface via a serial communications network for receiving the charged voltage and current.
The implementation process of the control method of the electric lock for the electric automobile provided by the application will be described below with reference to fig. 1, 2, 3 and specific embodiments.
Fig. 2 is a schematic diagram of locking and unlocking control of an electronic lock according to an embodiment of the present application. As shown in fig. 2, the electronic lock includes: a motor M and a resistor R; wherein, the liquid crystal display device comprises a liquid crystal display device,
the motor M is connected in parallel with the resistor R, one end of the motor M is led out of a live wire (generally red wire), the other end of the motor M is led out of a neutral point (generally black wire), a lead led out of the neutral point is called a zero wire if the neutral point is grounded, a lead led out of the neutral point is called a neutral wire if the neutral point is not grounded, and a ground wire (generally yellow wire) is led out through a switch; the resistor R is a protection resistor and is used for protecting the motor M and avoiding overload overheat and the like of the motor M.
Fig. 3 is a schematic flow chart of a control method of an electronic lock of an electric automobile according to an embodiment of the present application. As shown in fig. 3, the method includes:
and S301, in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle, and the motor of the electronic lock is controlled to positively rotate for locking according to the locking signal.
When the electric automobile is charged, a charging interface (which can correspond to an alternating current charging interface in fig. 1) corresponding to the vehicle-mounted charger and a power supply interface of power supply equipment are required to be locked through an electronic lock, and the charging interface and the power supply interface are firmly buckled after the locking, so that the electric automobile is not easy to fall off; the locking and unlocking processes of the electronic lock can be controlled by the vehicle-mounted charger, when the vehicle needs to be charged, the vehicle-mounted charger sends a locking signal to the electronic lock, the locking signal controls a motor in the electronic lock to rotate in a certain direction, the direction is regarded as forward, and when the motor of the electronic lock rotates forward, a lock catch corresponding to the charging interface is driven to be locked on the power supply interface.
S302, if a first preset level is detected at the ground wire end of the electronic lock, successful locking of the electronic lock is confirmed.
Although the vehicle-mounted charger sends out a locking signal to control the electronic lock to a locking state, the electronic lock can not be locked for some reasons, so that whether the locking process is successfully completed needs to be further confirmed; and carrying out level detection on the ground wire end led out by the electronic lock through the switch, and if the detected level meets the condition of the first preset level, indicating that the electronic lock normally completes the forward rotation of the motor according to the locking signal, namely, the vehicle-mounted charger can confirm that the electronic lock is successfully locked.
And S303, when the charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger, and the motor of the electronic lock is controlled to reversely unlock according to the unlocking signal.
After the electric automobile is charged, a charging interface corresponding to the vehicle-mounted charger is required to be pulled out from a power supply interface of power supply equipment, unlocking is required before pulling out, and a subsequent operator can perform pulling-out operation; when the vehicle-mounted charger confirms that unlocking is needed, an unlocking signal is sent to the electronic lock, the unlocking signal controls a motor in the electronic lock to rotate in the forward reverse direction, and the charging interface lock is driven to be unlocked at a lock catch of the power supply interface, so that unlocking is completed.
And S304, if a second preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully unlocked.
Although the vehicle-mounted charger sends out an unlocking signal to control the electronic lock to an unlocking state, the electronic lock may not be unlocked for some reasons, so that whether the unlocking process is successfully completed needs to be further confirmed; and carrying out level detection on the ground wire end led out by the electronic lock through the switch, and if the detected level meets the condition of the first preset level, indicating that the electronic lock normally completes motor reversal according to the unlocking signal, namely, the vehicle-mounted charger can confirm that the electronic lock is successfully unlocked.
In the embodiment of the application, in the charging process, the electronic lock is instructed to lock through the indication of the locking signal of the vehicle-mounted charger, so that a locking state is formed between the charging port of the vehicle-mounted charger and the power supply port of the power supply equipment, and thus the falling off is not easy to occur in the charging process, and the charging safety is ensured; after the charging is finished, the electronic lock can be indicated to unlock through the indication of the unlocking signal of the vehicle-mounted charger, so that an operator can smoothly pull the charging port of the vehicle-mounted charger out of the power supply port of the power supply equipment, and the whole charging process is smoothly finished.
In the following, an implementation process of locking/unlocking an electronic lock of an electric automobile in the control method of the electric automobile according to the present application will be described with reference to fig. 1, fig. 2, fig. 4, and specific embodiments.
Fig. 4 is a schematic flow chart II of a control method of an electronic lock of an electric automobile according to an embodiment of the present application. As shown in fig. 4, the method includes:
s401, confirming that the vehicle is in a charging process through a charging signal received by the vehicle-mounted charger, wherein the charging signal is sent out by a battery management system.
The charging indication received by the vehicle-mounted charger can come from a battery management system and an instrument unlocking switch, and the charging quantity requirement of the electric vehicle during charging is managed by the battery management system, namely, the battery management system can send a charging signal to the vehicle-mounted charger, and the vehicle-mounted charger is informed of the charging requirement and the charging quantity of the electric vehicle through the charging signal.
S402, in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle.
After receiving the charging signal, the vehicle-mounted charger confirms that the charging process is to be started, and at the moment, the electronic lock is locked, and a locking signal is correspondingly sent to the electronic lock.
And S403, according to the locking signal, connecting a neutral point of the electronic lock to the ground, connecting a live wire of the electronic lock to a positive voltage, and controlling the motor of the electronic lock to positively rotate for locking.
The locking signal can enable the electronic lock to be electrified, the live wire end of the electronic lock is connected with 12V positive electricity, the neutral point end of the electronic lock is connected with the ground, at the moment, current flows from the neutral point end to the live wire end through the motor of the electronic lock, and the motor is influenced by the current to rotate positively to control the electronic lock to finish locking.
S404, confirming that the vehicle is charged through a charging stopping signal received by the vehicle-mounted charger, wherein the charging stopping signal is sent by a battery management system.
After the electric automobile finishes charging, the battery management system senses that the charging quantity reaches the charging quantity demand sent by the battery management system, and at the moment, the battery management system sends a charging stopping signal to the vehicle-mounted charger to inform the vehicle-mounted charger to stop charging and unlock.
And S405, when the charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger of the vehicle.
After receiving the charging stopping signal, the vehicle-mounted charger confirms that charging is to be finished, reduces the voltage and current of the vehicle-mounted charger, and correspondingly sends an unlocking signal to the electronic lock to unlock the electronic lock.
And S406, according to the unlocking signal, the neutral point of the electronic lock is connected with a positive voltage, and the live wire is connected with the ground, so as to control the motor of the electronic lock to reversely unlock.
The unlocking signal can also enable the electronic lock to be electrified, and is different from the locking signal, the unlocking signal is that the neutral point is connected with 12V positive electricity, the live wire is connected with the ground, and the unlocking signal is controlled in opposite mode, at the moment, current flows from the live wire end to the neutral point end through a motor of the electronic lock, the motor is influenced by the current to convert the rotating direction and rotate in the opposite direction, and the electronic lock is controlled to unlock.
After unlocking, the electronic lock may be closed:
for example, after the controlling the electronic lock motor to reversely unlock, the method further includes:
and controlling the neutral point end of the electronic lock to be disconnected through the vehicle-mounted charger, and closing the electronic lock.
The vehicle-mounted charger sends a power-off signal to the electronic lock, controls the neutral point end of the electronic lock to be disconnected, and enables the electronic lock to be powered on to finish the closing process.
In the embodiment of the application, the rotation direction of the motor is controlled by controlling who receives positive voltage and who receives ground voltage through the live wire and the neutral point led out by the electronic lock, so that the motor is controlled to rotate forward or backward, and the locking action is finished when the charging is confirmed or the unlocking action is finished when the charging is confirmed, thereby ensuring the charging safety of the whole charging process.
The following will describe the implementation process of detecting whether locking/unlocking is successful in the control method of the electric lock of the electric automobile according to the present application with reference to fig. 1, fig. 2, fig. 5 and specific embodiments.
Fig. 5 is a schematic flow chart III of a control method of an electronic lock of an electric automobile according to an embodiment of the present application. As shown in fig. 5, the method includes:
s501, in the charging process, detecting whether the level of the ground terminal of the electronic lock is within a first preset level range.
Although the vehicle-mounted charger can control the electronic lock to lock and unlock, the electronic lock does not need to respond in time, and if the electronic lock fails, the locking and unlocking processes cannot be completed; the specific way for detecting whether the electronic lock completes the corresponding locking/unlocking action is as follows: detecting the level condition of the ground terminal of the electronic lock;
in the charging process, locking control is performed, whether the detection level of the ground wire end of the electronic lock is in a first preset level range or not is correspondingly performed, and if so, success of locking of the electronic lock is confirmed; the detecting whether the level is within the first preset level range may be detecting whether the ground terminal has a low level.
S502, if the level of the ground terminal of the electronic lock is not in the first preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the first preset level range or not according to the residual detection times after a first preset time interval.
If the level of the ground terminal of the electronic lock is not within the first preset level range (for example, the ground terminal does not have a low level), after waiting for a period of time according to a preset time interval, the ground terminal is detected for a plurality of times again according to the residual detection times, for example, after 100 milliseconds, 3 times of ground terminal are continuously detected, and whether the ground terminal has the low level is confirmed.
And S503, if the level of the ground terminal of the electronic lock is detected to be in the first preset level range in the residual detection times, confirming that the electronic lock is successfully locked.
If the level of the ground wire end of the electronic lock is detected to be in the first preset level range in the residual detection times, the successful locking and electrifying is indicated, for example, if the ground wire end is detected to have a low level in the residual detection times of 3 times, the successful locking of the electronic lock is confirmed.
Otherwise, confirm that the fault occurred:
for example, if the level of the ground terminal of the electronic lock is not detected within the first preset level range in the remaining detection times, the electronic lock is confirmed to be faulty.
If the level of the ground wire end of the electronic lock is not detected within the first preset level range within the residual detection times, the failure of locking and electrifying is indicated, the electronic lock fails, the corresponding report of the vehicle-mounted charger is transmitted to the battery management system through the CAN bus by the vehicle-mounted charger, and the battery management system makes a further decision.
And S504, detecting whether the level of the ground terminal of the electronic lock is within a second preset level range or not when the charging is completed.
When the charging is completed, unlocking control is needed, whether the detection level of the ground wire end of the electronic lock is in a first preset level range is correspondingly detected, and if so, the unlocking success of the electronic lock is confirmed; the detecting whether the level is within the first preset level range may be detecting whether the ground terminal has a low level.
S505, if the level of the ground terminal of the electronic lock is not in the second preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the second preset level range according to the remaining detection times after the second preset time interval.
The principle of detecting the level at the ground wire end of the electronic lock in the unlocking process is consistent with the principle of detecting the level in the locking process, and the details are not repeated here.
S506, if the level of the ground line end of the electronic lock is detected to be in the second preset level range in the residual detection times, the unlocking success of the electronic lock is confirmed.
If the level of the ground wire end of the electronic lock is detected to be in the second preset level range in the residual detection times, the unlocking and electrifying are successful, for example, if the ground wire end is detected to have low level in the residual detection times of 3 times, the unlocking success of the electronic lock is confirmed.
Otherwise, confirm that the fault occurred:
for example, if the level of the ground terminal of the electronic lock is not detected within the second preset level range in the remaining detection times, the electronic lock is confirmed to be faulty.
If the level of the ground wire end of the electronic lock is not detected within the second preset level range within the residual detection times, the failure of unlocking and electrifying is indicated, the electronic lock fails, the vehicle-mounted charger is correspondingly reported, and the vehicle-mounted charger transmits the failure to the battery management system through the CAN bus, so that the battery management system CAN make a further decision.
In addition to the smooth completion of the charging process, the charging may be interrupted:
for example, if the vehicle-mounted charger receives a charging interruption signal during the charging process, the method further includes:
based on an interrupt charging signal sent by a battery management system, the vehicle-mounted charger reduces charging current to be within a preset current within a preset time threshold, and sends an unlocking signal to the electronic lock until the electronic lock is confirmed to be unlocked or the electronic lock is confirmed to be faulty; the battery management system is controlled by an instrument unlocking switch to send out the charging interruption signal or not, and the instrument unlocking switch is controlled by a driver.
The interruption is possibly caused by human reasons, if the charging is finished due to the fact that a charged person needs to finish the charging temporarily, an instrument unlocking switch can be controlled to enable the electric automobile to interrupt the charging and complete unlocking of the electronic lock;
the battery management system sends an interrupt charging signal to the vehicle-mounted charger when the interrupt charging is definitely needed according to the indication of the instrument unlocking switch, and the interrupt charging signal is similar to the stop charging signal and controls the stop charging and the unlocking;
after receiving the charging interruption signal, the vehicle-mounted charger reduces the charging current to be within a preset current within a preset time threshold so as to interrupt charging; for example, in 100 milliseconds, the current is reduced to within 1A;
after the charging is interrupted, the vehicle-mounted charger sends an unlocking signal to the electronic lock to unlock the electronic lock, and the electronic lock is unlocked successfully possibly later, so that the battery management system, the vehicle-mounted charger, the electronic lock and the like all enter a dormant state, or the failure of the electronic lock is confirmed and reporting is completed.
In the embodiment of the application, the level of the ground terminal of the electronic lock is detected to detect whether the electronic lock fails and report is completed in time, so that corresponding measures are conveniently taken, and the work is convenient.
Fig. 6 is a diagram of an electronic lock control device for an electric automobile according to an embodiment of the present application, as shown in fig. 6, the device includes: a first processing module 601, a first determination module 602, a second processing module 603, and a second determination module 604;
the first processing module 601 is configured to send a locking signal to the electronic lock through a vehicle-mounted charger of the vehicle during charging, and control the electronic lock motor to lock in a forward rotation manner according to the locking signal.
The first processing module 601 is further configured to confirm that the vehicle is in a charging process through a charging signal received by the vehicle-mounted charger, where the charging signal is sent by a battery management system;
in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the locking signal, the neutral point of the electronic lock is grounded, the live wire is connected with a positive voltage, and the motor of the electronic lock is controlled to positively rotate for locking.
The first determining module 602 is configured to confirm that the electronic lock is successfully locked if a preset level is detected at a ground terminal of the electronic lock.
The first determining module 602 is further configured to detect whether a level of a ground terminal of the electronic lock is within a first preset level range;
if the level of the ground terminal of the electronic lock is not in the first preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the first preset level range or not according to the residual detection times after a first preset time interval;
and if the level of the ground terminal of the electronic lock is detected to be in the first preset level range in the residual detection times, confirming that the electronic lock is successfully locked.
And the second processing module 603 is configured to send an unlocking signal to the electronic lock through the vehicle-mounted charger when charging is completed, and control the electronic lock motor to reversely unlock according to the unlocking signal.
The second processing module 603 is further configured to confirm that the vehicle is charged by a charging stop signal received by the vehicle-mounted charger, where the charging stop signal is sent by the battery management system;
when the charging is completed, an unlocking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the unlocking signal, the neutral point of the electronic lock is connected with a positive voltage, and the live wire is connected with the ground, so that the motor of the electronic lock is controlled to reversely unlock.
And the second determining module 604 is configured to confirm that the electronic lock is successfully unlocked if a preset level is detected at the ground terminal of the electronic lock.
The second determining module 604 is further configured to detect whether a level of a ground terminal of the electronic lock is within a second preset level range;
if the level of the ground terminal of the electronic lock is not in the second preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the second preset level range or not according to the residual detection times after a second preset time interval;
and if the level of the ground terminal of the electronic lock is detected to be in the second preset level range in the residual detection times, confirming that the electronic lock is successfully unlocked.
The application also provides an electronic lock control device of the electric automobile, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
and the at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processor executes the electric automobile electronic lock control method.
Fig. 7 is a hardware schematic diagram of an electronic lock control device for an electric automobile according to an embodiment of the present application. As shown in fig. 7, the electric vehicle electronic lock control apparatus 70 provided in the present embodiment includes: at least one processor 701 and a memory 702. The device 70 further comprises communication means 703. Wherein the processor 701, the memory 702 and the communication means 703 are connected by a bus 704.
In a specific implementation process, at least one processor 701 executes computer-executed instructions stored in the memory 702, so that the at least one processor 701 executes the above electric vehicle electronic lock control method.
The specific implementation process of the processor 701 can be referred to the above method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be described herein again.
In the embodiment shown in fig. 7, it should be understood that the processor may be a central processing unit (english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The Memory may comprise high-speed Memory (Random Access Memory, RAM) or may further comprise Non-volatile Memory (NVM), such as at least one disk Memory.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and when a processor executes the computer execution instructions, the control method of the electronic lock of the electric automobile is realized.
The computer readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. In the alternative, the readable storage medium may be integral to the processor. The processor and the readable storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). The processor and the readable storage medium may reside as discrete components in a device.
The division of the units is merely a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains and as may be applied to the precise construction hereinbefore set forth and shown in the drawings and as follows in the scope of the appended claims. The scope of the application is limited only by the appended claims.

Claims (10)

1. The control method of the electronic lock of the electric automobile is characterized by comprising the following steps of:
in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle, and the motor of the electronic lock is controlled to positively rotate for locking according to the locking signal;
if a first preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully locked;
when charging is completed, an unlocking signal is sent to the electronic lock through the vehicle-mounted charger, and the motor of the electronic lock is controlled to reversely unlock according to the unlocking signal;
and if the second preset level is detected at the ground wire end of the electronic lock, confirming that the electronic lock is successfully unlocked.
2. The method according to claim 1, wherein the step of transmitting a locking signal to the electronic lock by the vehicle-mounted charger during the charging process, and controlling the electronic lock motor to lock in a forward rotation manner according to the locking signal comprises:
the vehicle is confirmed to be in the charging process through a charging signal received by the vehicle-mounted charger, and the charging signal is sent out by a battery management system;
in the charging process, a locking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the locking signal, the neutral point of the electronic lock is grounded, the live wire is connected with a positive voltage, and the motor of the electronic lock is controlled to positively rotate for locking.
3. The method of claim 1, wherein the sending, by the vehicle-mounted charger, an unlock signal to the electronic lock when charging is completed, and controlling the electronic lock motor to unlock reversely according to the unlock signal, comprises:
the vehicle charging completion is confirmed through a charging stopping signal received by the vehicle-mounted charger, and the charging stopping signal is sent by a battery management system;
when the charging is completed, an unlocking signal is sent to the electronic lock through a vehicle-mounted charger of the vehicle;
and according to the unlocking signal, the neutral point of the electronic lock is connected with a positive voltage, and the live wire is connected with the ground, so that the motor of the electronic lock is controlled to reversely unlock.
4. The method of claim 3, wherein after said controlling the reverse unlocking of the electronic lock motor, the method further comprises:
and controlling the neutral point end of the electronic lock to be disconnected through the vehicle-mounted charger, and closing the electronic lock.
5. The method of claim 1, wherein, during the charging, if the first preset level is detected at the ground terminal of the electronic lock, the confirming that the electronic lock is successfully locked comprises:
detecting whether the level of the ground terminal of the electronic lock is within a first preset level range;
if the level of the ground terminal of the electronic lock is not in the first preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the first preset level range or not according to the residual detection times after a first preset time interval;
if the level of the ground terminal of the electronic lock is detected to be in the first preset level range in the residual detection times, the successful locking of the electronic lock is confirmed;
correspondingly, when the charging is completed, if the second preset level is detected at the ground wire end of the electronic lock, the confirmation of successful unlocking of the electronic lock includes:
detecting whether the level of the ground terminal of the electronic lock is within a second preset level range;
if the level of the ground terminal of the electronic lock is not in the second preset level range, re-detecting whether the level of the ground terminal of the electronic lock is in the second preset level range or not according to the residual detection times after a second preset time interval;
and if the level of the ground terminal of the electronic lock is detected to be in the second preset level range in the residual detection times, confirming that the electronic lock is successfully unlocked.
6. The method of claim 5, wherein if the level of the ground terminal of the electronic lock is not detected within a first preset level range for the remaining detection times, confirming the electronic lock failure;
and if the level of the ground terminal of the electronic lock is not detected within the second preset level range in the residual detection times, confirming that the electronic lock fails.
7. The method of claim 1, wherein if the vehicle-mounted charger receives an interrupt charging signal during charging, the method further comprises:
based on an interrupt charging signal sent by a battery management system, the vehicle-mounted charger reduces charging current to be within a preset current within a preset time threshold, and sends an unlocking signal to the electronic lock until the electronic lock is confirmed to be unlocked or the electronic lock is confirmed to be faulty; the battery management system is controlled by an instrument unlocking switch to send out the charging interruption signal or not, and the instrument unlocking switch is controlled by a driver.
8. An electric automobile electronic lock controlling means, characterized by comprising:
the first processing module is used for sending a locking signal to the electronic lock through a vehicle-mounted charger of the vehicle in the charging process and controlling the motor of the electronic lock to positively rotate for locking according to the locking signal;
the first judging module is used for confirming that the electronic lock is successfully locked if a preset level is detected at the ground wire end of the electronic lock;
the second processing module is used for sending an unlocking signal to the electronic lock through the vehicle-mounted charger when the charging is completed, and controlling the motor of the electronic lock to reversely unlock according to the unlocking signal;
and the second judging module is used for confirming that the electronic lock is successfully unlocked if the preset level is detected at the ground wire end of the electronic lock.
9. An electric automobile electronic lock control device, characterized by comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the electric vehicle electronic lock control method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the electric vehicle electronic lock control method as claimed in any one of claims 1 to 7.
CN202310602546.3A 2023-05-24 2023-05-24 Control method, device, equipment and medium for electronic lock of electric automobile Pending CN116624027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310602546.3A CN116624027A (en) 2023-05-24 2023-05-24 Control method, device, equipment and medium for electronic lock of electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310602546.3A CN116624027A (en) 2023-05-24 2023-05-24 Control method, device, equipment and medium for electronic lock of electric automobile

Publications (1)

Publication Number Publication Date
CN116624027A true CN116624027A (en) 2023-08-22

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Country Status (1)

Country Link
CN (1) CN116624027A (en)

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