CN116620054A - Vehicle-mounted charging system and fingerprint unlocking method - Google Patents

Vehicle-mounted charging system and fingerprint unlocking method Download PDF

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Publication number
CN116620054A
CN116620054A CN202310620864.2A CN202310620864A CN116620054A CN 116620054 A CN116620054 A CN 116620054A CN 202310620864 A CN202310620864 A CN 202310620864A CN 116620054 A CN116620054 A CN 116620054A
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CN
China
Prior art keywords
charging
vehicle
current value
mounted charger
battery management
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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
CN202310620864.2A
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Chinese (zh)
Inventor
王浩
袁中
费琛
曾羽飞
张哲嫣
季景
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.)
Chery New Energy Automobile Co Ltd
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Chery New Energy Automobile Co Ltd
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Publication date
Application filed by Chery New Energy Automobile Co Ltd filed Critical Chery New Energy Automobile Co Ltd
Priority to CN202310620864.2A priority Critical patent/CN116620054A/en
Publication of CN116620054A publication Critical patent/CN116620054A/en
Pending legal-status Critical Current

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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
    • 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
    • B60L53/20—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 converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/25—Means to switch the anti-theft system on or off using biometry
    • B60R25/252—Fingerprint recognition
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The embodiment of the disclosure discloses a vehicle-mounted charging system and a fingerprint unlocking method, and belongs to the technical field of automobiles. The vehicle-mounted charging system comprises a fingerprint identification device, the fingerprint of a user can be obtained and identified, and the electronic lock can be unlocked after the fingerprint identification device passes the fingerprint identification. Therefore, the electronic lock can be unlocked at any time by adding the unlocking judging structure (the fingerprint identification device), and a user can unlock the vehicle conveniently even though the vehicle is not fully charged when the user needs the vehicle. In addition, the charging switching device is arranged on the outer surface of the vehicle, a user can unlock the vehicle only by the aid of the charging switching device, and unlocking efficiency is high.

Description

Vehicle-mounted charging system and fingerprint unlocking method
Technical Field
The disclosure relates to the technical field of automobiles, in particular to a vehicle-mounted charging system and a fingerprint unlocking method.
Background
With the importance of people on environmental protection, new energy automobiles gradually enter each family. For electric vehicles, a user typically selects to charge the electric vehicle at an ac charging stake.
For safety reasons, the ac charging interface of an electric vehicle is generally provided with an electronic lock. After a user inserts the charging gun into the alternating current charging interface, the vehicle-mounted charger locks the charging gun. After full charge, the onboard charger unlocks the charging gun. Therefore, in the charging process, people can not randomly plug the charging gun.
However, in the process of charging the electric automobile, if the user needs the automobile urgently, the electric automobile is not fully charged yet, the vehicle-mounted charger cannot unlock the electronic lock, the charging gun cannot be pulled out, and inconvenience is brought to the user.
Disclosure of Invention
The disclosure provides a vehicle-mounted charging system and a fingerprint unlocking method, which can solve the problems of the related technology. The technical proposal is as follows:
in a first aspect, there is provided a vehicle-mounted charging system, the vehicle-mounted charging system including a charging transferring device 1, a battery management apparatus 2 and a vehicle-mounted charger 3, the charging transferring device 1 including a fingerprint identification device 11, a charging interface 12 and an electronic lock 13;
the fingerprint identification device 11 is respectively and electrically connected with the battery management equipment 2 and the vehicle-mounted charger 3;
the charging interface 12 is electrically connected with the vehicle-mounted charger 3, and the charging interface 12 is used for connecting a charging gun;
the electronic lock 13 is electrically connected with the vehicle-mounted charger 3;
the electronic lock 13 is used for locking the charging gun in the process of charging the vehicle;
the fingerprint identification device 11 is configured to determine, when fingerprint information of a target user is acquired during charging of a vehicle, whether a similarity between the acquired fingerprint information and pre-stored fingerprint information reaches a specified threshold, if the similarity between the acquired fingerprint information and the pre-stored fingerprint information reaches the specified threshold, send a request instruction for reducing power to the battery management device 2 and the vehicle-mounted charger 3 through a controller area network CAN bus, and if the similarity between the acquired fingerprint information and the pre-stored fingerprint information does not reach the specified threshold, prompt the target user that fingerprint identification fails;
the battery management device 2 is configured to compare a current charging current value with a target charging current value when the request instruction for reducing power is received, determine a difference value between the current charging current value and the target charging current value if the current charging current value is greater than the target charging current value, and send the difference value to the vehicle-mounted charger 3, and send an unlocking instruction to the vehicle-mounted charger 3 if the current charging current value is less than or equal to the target charging current value;
the vehicle-mounted charger 3 is configured to perform current reduction processing based on the difference value when the difference value is received, so as to reduce the charging current value to the target charging current value, control the electronic lock 13 to unlock, and control the electronic lock 13 to unlock when the unlocking instruction is received.
In a possible implementation manner, the charging adapter apparatus 1 further includes a power indicator lamp 14, where the power indicator lamp 14 is electrically connected to the battery management device 2;
the battery management device 2 is further configured to control the charge indicator light 14 to display a charging progress of the battery.
In one possible implementation, the vehicle-mounted charger 3 is further configured to:
determining whether a current output current value of the charging pile is larger than a target charging current value or not through a received control guidance CP signal sent by the charging pile, and controlling the electronic lock 13 to lock when the current output current value is larger than the charging target current value;
when a door locking signal of the vehicle is received, the electronic lock 13 is controlled to lock.
In one possible implementation manner, the vehicle-mounted charging system further comprises a vehicle controller 4;
the vehicle-mounted charger 3 is further configured to send a wake-up notification to the charging switching device 1, the battery management system 2 and the vehicle controller 4 when receiving a connection confirmation CC signal sent by the charging gun and a CP signal sent by the charging pile;
the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 are also used for performing self-checking when the wake-up notification is received, and sending a self-checking completion notification to the vehicle-mounted charger 3 when the self-checking result is normal;
the vehicle-mounted charger 3 is further configured to send a charging notification to the charging pile after receiving the self-checking completion notification sent by the charging switching device 1, the battery management system 2 and the vehicle controller 4, where the charging notification is used to instruct the charging pile to send current to the vehicle.
In one possible implementation, the charging adapter 1 is further configured to:
and when the fingerprint identification failure times reach a preset time threshold, sending a prompt message to the vehicle-mounted terminal through the CAN bus.
In a second aspect, a fingerprint unlocking method is provided, the method is applied to a vehicle-mounted charging system, the vehicle-mounted charging system comprises a charging switching device 1, a battery management device 2 and a vehicle-mounted charger 3, the charging switching device 1 comprises a fingerprint identification device 11, a charging interface 12 and an electronic lock 13, the fingerprint identification device 11 is respectively and electrically connected with the battery management device 2 and the vehicle-mounted charger 3, the charging interface 12 is electrically connected with the vehicle-mounted charger 3, and the charging interface 12 is used for connecting a charging gun; the electronic lock 13 is electrically connected with the vehicle-mounted charger 3, the electronic lock 13 is used for locking the charging gun in the process of charging the vehicle, and the method comprises the following steps:
in the process of charging a vehicle, when the fingerprint identification device 11 acquires fingerprint information of a target user, determining whether the similarity of the acquired fingerprint information and pre-stored fingerprint information reaches a specified threshold, if the similarity of the acquired fingerprint information and the pre-stored fingerprint information reaches the specified threshold, sending a request instruction for reducing power to the battery management device 2 and the vehicle-mounted charger 3 through a Controller Area Network (CAN) bus, and if the similarity of the acquired fingerprint information and the pre-stored fingerprint information does not reach the specified threshold, prompting the target user that fingerprint identification fails;
the battery management device 2 compares a current charging current value with a target charging current value when receiving the request instruction for reducing power, determines a difference value between the current charging current value and the target charging current value if the current charging current value is greater than the target charging current value, and sends the difference value to the vehicle-mounted charger 3, and sends an unlocking instruction to the vehicle-mounted charger 3 if the current charging current value is less than or equal to the target charging current value;
when the vehicle-mounted charger 3 receives the difference value, current reduction processing is performed based on the difference value so as to reduce the charging current value to the target charging current value, the electronic lock 13 is controlled to unlock, and when the vehicle-mounted charger 3 receives the unlocking instruction, the electronic lock 13 is controlled to unlock.
In a possible implementation manner, the charging adapter apparatus 1 further includes a power indicator lamp 14, where the power indicator lamp 14 is electrically connected to the battery management device 2;
during the charging process of the vehicle, the battery management device 2 controls the charge indicator lamp 14 to display the charging progress of the battery.
In one possible implementation, the method further includes:
in the process of charging the vehicle, the vehicle-mounted charger 3 determines whether the current output current value of the charging pile is larger than a target charging current value through a received control guidance CP signal sent by the charging pile, and controls the electronic lock 13 to lock when the current output current value is larger than the charging target current value;
and when the vehicle-mounted charger 3 receives a locking signal of a vehicle door, the electronic lock 13 is controlled to lock.
In one possible implementation manner, the vehicle-mounted charging system further comprises a vehicle controller 4;
the vehicle-mounted charger 3 is further configured to send a wake-up notification to the charging switching device 1, the battery management system 2 and the vehicle controller 4 when receiving a connection confirmation CC signal sent by the charging gun and a CP signal sent by the charging pile;
the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 are also used for performing self-checking when the wake-up notification is received, and sending a self-checking completion notification to the vehicle-mounted charger 3 when the self-checking result is normal;
the vehicle-mounted charger 3 is further configured to send a charging notification to the charging pile after receiving the self-checking completion notification sent by the charging switching device 1, the battery management system 2 and the vehicle controller 4, where the charging notification is used to instruct the charging pile to send current to the vehicle.
In one possible implementation, the method further includes:
when the charging transfer device 1 determines that the fingerprint identification failure times reach the preset times threshold, a prompt message is sent to the vehicle-mounted terminal through the CAN bus.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
through the vehicle-mounted charging system provided by the embodiment of the disclosure, the vehicle-mounted charging system comprises the fingerprint identification device, the fingerprint of the user can be obtained and identified, and the electronic lock can be unlocked after the identification is passed. Therefore, the electronic lock can be unlocked at any time by adding the unlocking judging structure (the fingerprint identification device), and a user can unlock the vehicle conveniently even though the vehicle is not fully charged when the user needs the vehicle. In addition, the charging switching device is arranged on the outer surface of the vehicle, a user can unlock the vehicle only by the aid of the charging switching device, and unlocking efficiency is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a vehicle-mounted charging system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a vehicle-mounted charging system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a charging adapter according to an embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a vehicle-mounted charging system according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a method for unlocking a fingerprint according to an embodiment of the present disclosure;
fig. 6 is a flowchart of a method for performing self-checking by the vehicle-mounted charging system according to an embodiment of the disclosure.
Detailed Description
The embodiment of the disclosure provides a vehicle-mounted charging system, which can be structurally shown in fig. 1 and comprises a charging switching device 1, battery management equipment 2 and a vehicle-mounted charger 3.
The charging transfer device 1 may include a fingerprint identification device 11, a charging interface 12, an electronic lock 13, and a power indicator 14, and accordingly, the structure of the vehicle charging system may be as shown in fig. 2. The charging adapter 1 may be mounted on the outer surface of the vehicle, and the front surface thereof may be as shown in fig. 3.
The fingerprint recognition device 11 may be an automatic fingerprint recognition system (AFIS, automatic fingerprint identification system), and may include a fingerprint sensor 111 and an information processing module 112. The fingerprint identification device 11 is electrically connected with the battery management equipment 2 and the vehicle-mounted charger 3 respectively. The fingerprint sensor 111 may be an optical fingerprint sensor or a semiconductor fingerprint sensor. The fingerprint sensor 111 is used for collecting fingerprints, and the information processing module 112 is used for storing fingerprint information and identifying fingerprint information.
Charging interface 12 may include a dc charging interface 121 and an ac charging interface 122. The charging interface 12 is electrically connected with the vehicle-mounted charger 3, and the charging interface 12 is used for connecting a charging gun.
The electronic lock 13 may be an electromagnetic lock or the like. The electronic lock 13 is electrically connected with the vehicle-mounted charger 3. The electronic lock 13 is used to lock the charging gun during charging of the vehicle.
The charge indicator light 14 may be an LED light or the like. The electricity quantity indicator lamp 14 is electrically connected with the battery management device 2.
The battery management device (BMS, battery management system) 2 is used to collect state parameters of the battery, such as current, voltage, etc.
An On Board Charger (OBC) 3 may be divided into two types of 3.3kw and 6.6kw according to power, and is used for dynamically adjusting a charging current or voltage, etc.
The on-board charging system may also include a vehicle controller (VCU, vehicle control unit) 4, the configuration of which may be as shown in fig. 4. The vehicle controller 4 is configured to receive data transmitted by each sensor, send corresponding instructions to different devices of the vehicle, and the like, and the devices may be, for example, the battery management device 2 and the like.
In recent years, the market share of new energy automobiles continues to increase. The new energy automobile uses clean energy sources such as electric energy, hydrogen energy and the like as power sources. For electric vehicles, people can use a charging pile to charge the vehicle. When charging, can lock the rifle that charges to avoid charging the in-process and charge the rifle and pull away.
The embodiment of the disclosure provides a fingerprint unlocking method for the application scenario, which is applied to the vehicle-mounted charging system, and the processing flow can be as shown in fig. 5, and includes the following processing steps:
501, in the process of charging the vehicle, when the fingerprint identification device 11 acquires the fingerprint information of the target user, it is determined whether the similarity between the acquired fingerprint information and the pre-stored fingerprint information reaches a specified threshold, if the similarity between the acquired fingerprint information and the pre-stored fingerprint information reaches the specified threshold, a request instruction for reducing power is sent to the battery management device 2 and the vehicle-mounted charger 3 through the controller area network CAN bus, and if the similarity between the acquired fingerprint information and the pre-stored fingerprint information does not reach the specified threshold, the failure of fingerprint identification of the target user is prompted.
In practice, during the process of charging the vehicle by the target user using the ac charging stake, a fingerprint may be input at the fingerprint sensor 111 when the target user is in urgent need of the use of the vehicle. The fingerprint sensor 111 acquires fingerprint information of the target user, and transmits the fingerprint information to the information processing module 112.
The information processing module 112 may input the acquired fingerprint information and the pre-stored fingerprint information into a fingerprint similarity algorithm to calculate the similarity. The information processing module 112 may also input the obtained fingerprint information into a fingerprint feature extraction model to obtain fingerprint features, and calculate the similarity between the fingerprint features and pre-stored fingerprint features. Further, the information processing module 112 compares the calculated similarity with a specified threshold of pre-stored similarity. When the calculated similarity is greater than or equal to a specified threshold of pre-stored similarity, it may be determined that the fingerprint identification is successful. At this time, the information processing module 112 may transmit a request instruction for power reduction to the battery management device 2 and the in-vehicle charger 3 through the CAN bus. When the calculated similarity is smaller than a specified threshold of the pre-stored similarity, it may be determined that the fingerprint recognition fails, and the fingerprint recognition device 11 prompts the target user for the fingerprint recognition failure by vibration or an indicator. The indicator light may be part of the fingerprint recognition device 11.
In addition, the information processing module 112 may send a prompt message to the vehicle-mounted terminal through the CAN bus when determining that the number of fingerprint identification failures reaches the preset number threshold within the specified duration. After receiving the prompt message, the vehicle-mounted terminal can record the prompt message. And when the target user starts the vehicle-mounted terminal again, displaying the prompt message. Therefore, if the non-target user performs unlocking, the relevant information can be recorded, the target user is prompted to pay attention, and the safety can be improved. Or, after receiving the prompt message, the vehicle-mounted terminal may send the prompt message to the mobile terminal of the target user. And after receiving the prompt message, the mobile terminal displays the prompt message. Thus, the target user can timely know the safety condition of the vehicle in the charging process.
In addition, during the charging process of the vehicle, the battery management device 14 may control the charge indicator 14 to display the charging progress according to the battery power obtained in real time, and may specifically control the number of the lit charge indicator 14 to display the charging progress. For example, 10 charge indicator lamps 14 are provided, and a number of 5 lighted charge indicator lamps indicates that the battery is charged at 50%. Thus, the target user can quickly know the charging progress of the battery according to the electric quantity indicator lamp 14, and the charging progress is convenient.
502, when receiving a request instruction for reducing power, the battery management device 2 compares the current charging current value with the target charging current value, determines a difference value between the current charging current value and the target charging current value if the current charging current value is greater than the target charging current value, and sends the difference value to the vehicle-mounted charger 3, and sends an unlocking instruction to the vehicle-mounted charger 3 if the current charging current value is less than or equal to the target charging current value.
In implementation, when receiving the request instruction for reducing power, the battery management device 2 acquires the present charging current value transmitted by the current sensor, and compares the present charging current value with the target charging current value, which may be 16A. The battery management device 2 may perform corresponding processing according to the comparison result:
first, if the present charge current value is greater than the target charge current value, a difference between the present charge current value and the target charge current value is determined and transmitted to the in-vehicle charger 3.
Second, if the current charging current value is smaller than or equal to the target charging current value, an unlocking instruction is sent to the vehicle-mounted charger 3.
503, when the vehicle-mounted charger 3 receives the difference value, performing current reduction processing based on the difference value to reduce the charging current value to the target charging current value, controlling the electronic lock 13 to unlock, and when the vehicle-mounted charger 3 receives an unlocking instruction, controlling the electronic lock 13 to unlock.
In implementation, corresponding to the first case in step 502, when the vehicle-mounted charger 3 receives the difference value, a current reduction process is performed based on the difference value to reduce the charging current value to the target charging current value, that is, the vehicle-mounted charger 3 can keep the power operation of 3.3kw, so that the output current of the charging pile keeps the target charging current value. When the vehicle-mounted charger 3 monitors that the current charging current value is the target charging current value, the electronic lock 13 is controlled to unlock. Corresponding to the second condition in step 502, when the vehicle-mounted charger 3 receives the unlocking instruction, the electronic lock 13 is controlled to unlock.
At this time, the target user may press the micro switch on the charging gun. The vehicle-mounted charger 3 detects the abnormality of the CC signal, stops charging, and the target user can safely pull out the charging gun. Wherein the CP signal is a PMW signal. Because this scheme is before carrying out the unblock to the electronic lock, has reduced the charging current to the target charging current value, consequently, just pull out the rifle that charges to the possible forgetting of target user presses micro-gap switch, perhaps to the condition that does not have the rifle that charges of micro-gap switch, also can not appear safety problem.
The embodiment of the present disclosure also provides a method for locking the electronic lock 13, which specifically includes the following steps:
in the process of charging the vehicle, the vehicle-mounted charger 3 determines whether the current output current value of the charging pile is larger than a target charging current value through the received control guidance CP signal sent by the charging pile, and when the current output current value is larger than the charging target current value, the electronic lock 13 is controlled to lock. When the vehicle-mounted charger 3 receives a door locking signal of the vehicle, the electronic lock 13 is controlled to lock.
In practice, when the vehicle is being charged by the ac charging pile of 32A, the vehicle-mounted charger 3 obtains a current value corresponding to the CP signal (i.e., a current output current value of the charging pile) according to the duty ratio of the CP signal and the correspondence relationship between the duty ratio and the current by the CP signal transmitted by the received ac charging pile. Further, when the vehicle-mounted charger 3 determines that the current output current value is greater than the charging target current value, the electronic lock 13 is controlled to lock. Alternatively, when the vehicle-mounted charger 3 receives a door locking signal of the vehicle, the electronic lock 13 is controlled to lock.
The embodiment of the disclosure also provides a method for performing self-checking on a vehicle-mounted charging system before charging a vehicle, and the processing flow may be as shown in fig. 6, and includes the following processing steps:
601, when receiving a connection confirmation CC signal sent by the charging gun and a CP signal sent by the charging pile, the vehicle-mounted charger 3 sends a wake-up notification to the charging switching device 1, the battery management system 2 and the vehicle controller 4.
Wherein the CC signal is a resistive signal. The wake-up notification is used to instruct the relevant device to start up and self-check.
In implementation, after the target user inserts the charging gun into the ac charging interface, the charging gun transmits a CC signal to the vehicle-mounted charger 3, and the charging stake transmits a CP signal to the vehicle-mounted charger. When the vehicle-mounted charger 3 receives the CC signal and the CP signal, wake-up notification is sent to the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 through the CAN bus respectively.
602, the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 perform self-checking when receiving a wake-up notification, and when the self-checking result is normal, a self-checking completion notification is sent to the vehicle-mounted charger 3.
In the implementation, when the charge switching device 1 receives the wake-up notification, the self-test is started, when the self-test result is normal, a self-test completion notification is sent to the vehicle-mounted charger 3 through the CAN bus, and when the self-test result is abnormal, an alarm notification is sent to the vehicle-mounted charger 3 through the CAN bus. When the battery management system 2 receives the awakening notification, self-checking is started, when the self-checking result is normal, a self-checking completion notification is sent to the vehicle-mounted charger 3 through the CAN bus, and when the self-checking result is abnormal, an alarm notification is sent to the vehicle-mounted charger 3 through the CAN bus. When the vehicle controller 4 receives the wake-up notice, self-checking is started, when the self-checking result is normal, a self-checking completion notice is sent to the vehicle-mounted charger 3 through the CAN bus, and when the self-checking result is abnormal, an alarm notice is sent to the vehicle-mounted charger 3 through the CAN bus.
603, after receiving the self-checking completion notification sent by the charging adapter device 1, the battery management system 2 and the vehicle controller 4, the vehicle-mounted charger 3 sends a charging notification to the charging pile.
The charging notification is used for indicating the charging pile to convey current to the vehicle.
In practice, when the vehicle-mounted charger 3 receives the self-checking completion notification sent by the charging adapter device 1, the battery management system 2 and the vehicle controller 4, it sends a charging notification to the charging pile. After receiving the charge notification, the charging pile outputs a current to the vehicle-mounted charger 3 through the charging gun. The vehicle-mounted charger 3 processes the alternating current and then charges the battery. When the vehicle-mounted charger 3 receives the alarm notification sent by any one of the charging switching device 1, the battery management system 2 and the vehicle controller 4, the charging notification is not sent to the charging pile, and the electric quantity indicator lamp 14 is controlled to be turned off or flash to prompt the target user that the charging switching device 1, the battery management system 2 and the vehicle controller 4 may have faults.
According to the method provided by the embodiment of the disclosure, the fingerprint of the user is acquired and identified through the fingerprint identification device, and the electronic lock can be unlocked after the user passes the identification. Therefore, the electronic lock can be unlocked at any time by adding the unlocking judging structure (the fingerprint identification device), and a user can unlock the vehicle conveniently even though the vehicle is not fully charged when the user needs the vehicle. In addition, the charging switching device is arranged on the outer surface of the vehicle, a user can unlock the vehicle only by the aid of the charging switching device, and unlocking efficiency is high.
It should be noted that, the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals (including but not limited to signals transmitted between a user terminal and other devices, etc.) related to the present disclosure are all authorized by the user or are fully authorized by the parties, and the collection, use, and processing of the related data is required to comply with the relevant laws and regulations and standards of the relevant countries and regions.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the embodiments is provided merely for the purpose of illustrating some of the general principles of the disclosure and is not intended to limit the disclosure to the details of construction and the arrangement of various modifications, equivalents, alternatives, and improvements within the spirit and principles of the disclosure.

Claims (10)

1. The vehicle-mounted charging system is characterized by comprising a charging transfer device 1, battery management equipment 2 and a vehicle-mounted charger 3, wherein the charging transfer device 1 comprises a fingerprint identification device 11, a charging interface 12 and an electronic lock 13;
the fingerprint identification device 11 is respectively and electrically connected with the battery management equipment 2 and the vehicle-mounted charger 3;
the charging interface 12 is electrically connected with the vehicle-mounted charger 3, and the charging interface 12 is used for connecting a charging gun;
the electronic lock 13 is electrically connected with the vehicle-mounted charger 3;
the electronic lock 13 is used for locking the charging gun in the process of charging the vehicle;
the fingerprint identification device 11 is configured to determine, when fingerprint information of a target user is acquired during charging of a vehicle, whether a similarity between the acquired fingerprint information and pre-stored fingerprint information reaches a specified threshold, if the similarity between the acquired fingerprint information and the pre-stored fingerprint information reaches the specified threshold, send a request instruction for reducing power to the battery management device 2 and the vehicle-mounted charger 3 through a controller area network CAN bus, and if the similarity between the acquired fingerprint information and the pre-stored fingerprint information does not reach the specified threshold, prompt the target user that fingerprint identification fails;
the battery management device 2 is configured to compare a current charging current value with a target charging current value when the request instruction for reducing power is received, determine a difference value between the current charging current value and the target charging current value if the current charging current value is greater than the target charging current value, and send the difference value to the vehicle-mounted charger 3, and send an unlocking instruction to the vehicle-mounted charger 3 if the current charging current value is less than or equal to the target charging current value;
the vehicle-mounted charger 3 is configured to perform current reduction processing based on the difference value when the difference value is received, so as to reduce the charging current value to the target charging current value, control the electronic lock 13 to unlock, and control the electronic lock 13 to unlock when the unlocking instruction is received.
2. The system according to claim 1, wherein the charging adapter 1 further comprises a power indicator light 14, the power indicator light 14 being electrically connected to the battery management device 2;
the battery management device 2 is further configured to control the charge indicator light 14 to display a charging progress of the battery.
3. The system according to claim 1, wherein the vehicle-mounted charger 3 is further configured to:
determining whether a current output current value of the charging pile is larger than a target charging current value or not through a received control guidance CP signal sent by the charging pile, and controlling the electronic lock 13 to lock when the current output current value is larger than the charging target current value;
when a door locking signal of the vehicle is received, the electronic lock 13 is controlled to lock.
4. The system of claim 1, wherein the vehicle-mounted charging system further comprises a vehicle controller 4;
the vehicle-mounted charger 3 is further configured to send a wake-up notification to the charging switching device 1, the battery management system 2 and the vehicle controller 4 when receiving a connection confirmation CC signal sent by the charging gun and a CP signal sent by the charging pile;
the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 are also used for performing self-checking when the wake-up notification is received, and sending a self-checking completion notification to the vehicle-mounted charger 3 when the self-checking result is normal;
the vehicle-mounted charger 3 is further configured to send a charging notification to the charging pile after receiving the self-checking completion notification sent by the charging switching device 1, the battery management system 2 and the vehicle controller 4, where the charging notification is used to instruct the charging pile to send current to the vehicle.
5. The system according to claim 1, wherein the charge switching device 1 is further configured to:
and when the fingerprint identification failure times reach a preset time threshold, sending a prompt message to the vehicle-mounted terminal through the CAN bus.
6. The fingerprint unlocking method is characterized by being applied to a vehicle-mounted charging system, wherein the vehicle-mounted charging system comprises a charging switching device 1, battery management equipment 2 and a vehicle-mounted charger 3, the charging switching device 1 comprises a fingerprint identification device 11, a charging interface 12 and an electronic lock 13, the fingerprint identification device 11 is respectively and electrically connected with the battery management equipment 2 and the vehicle-mounted charger 3, the charging interface 12 is electrically connected with the vehicle-mounted charger 3, and the charging interface 12 is used for being connected with a charging gun; the electronic lock 13 is electrically connected with the vehicle-mounted charger 3, the electronic lock 13 is used for locking the charging gun in the process of charging the vehicle, and the method comprises the following steps:
in the process of charging a vehicle, when the fingerprint identification device 11 acquires fingerprint information of a target user, determining whether the similarity of the acquired fingerprint information and pre-stored fingerprint information reaches a specified threshold, if the similarity of the acquired fingerprint information and the pre-stored fingerprint information reaches the specified threshold, sending a request instruction for reducing power to the battery management device 2 and the vehicle-mounted charger 3 through a Controller Area Network (CAN) bus, and if the similarity of the acquired fingerprint information and the pre-stored fingerprint information does not reach the specified threshold, prompting the target user that fingerprint identification fails;
the battery management device 2 compares a current charging current value with a target charging current value when receiving the request instruction for reducing power, determines a difference value between the current charging current value and the target charging current value if the current charging current value is greater than the target charging current value, and sends the difference value to the vehicle-mounted charger 3, and sends an unlocking instruction to the vehicle-mounted charger 3 if the current charging current value is less than or equal to the target charging current value;
when the vehicle-mounted charger 3 receives the difference value, current reduction processing is performed based on the difference value so as to reduce the charging current value to the target charging current value, the electronic lock 13 is controlled to unlock, and when the vehicle-mounted charger 3 receives the unlocking instruction, the electronic lock 13 is controlled to unlock.
7. The method according to claim 6, wherein the charging adapter 1 further comprises a power indicator light 14, the power indicator light 14 being electrically connected to the battery management device 2;
during the charging process of the vehicle, the battery management device 2 controls the charge indicator lamp 14 to display the charging progress of the battery.
8. The method of claim 6, wherein the method further comprises:
in the process of charging the vehicle, the vehicle-mounted charger 3 determines whether the current output current value of the charging pile is larger than a target charging current value through a received control guidance CP signal sent by the charging pile, and controls the electronic lock 13 to lock when the current output current value is larger than the charging target current value;
and when the vehicle-mounted charger 3 receives a locking signal of a vehicle door, the electronic lock 13 is controlled to lock.
9. The method of claim 6, wherein the vehicle-mounted charging system further comprises a vehicle controller 4;
the vehicle-mounted charger 3 is further configured to send a wake-up notification to the charging switching device 1, the battery management system 2 and the vehicle controller 4 when receiving a connection confirmation CC signal sent by the charging gun and a CP signal sent by the charging pile;
the charging switching device 1, the battery management system 2 and the whole vehicle controller 4 are also used for performing self-checking when the wake-up notification is received, and sending a self-checking completion notification to the vehicle-mounted charger 3 when the self-checking result is normal;
the vehicle-mounted charger 3 is further configured to send a charging notification to the charging pile after receiving the self-checking completion notification sent by the charging switching device 1, the battery management system 2 and the vehicle controller 4, where the charging notification is used to instruct the charging pile to send current to the vehicle.
10. The method of claim 6, wherein the method further comprises:
when the charging transfer device 1 determines that the fingerprint identification failure times reach the preset times threshold, a prompt message is sent to the vehicle-mounted terminal through the CAN bus.
CN202310620864.2A 2023-05-26 2023-05-26 Vehicle-mounted charging system and fingerprint unlocking method Pending CN116620054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310620864.2A CN116620054A (en) 2023-05-26 2023-05-26 Vehicle-mounted charging system and fingerprint unlocking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310620864.2A CN116620054A (en) 2023-05-26 2023-05-26 Vehicle-mounted charging system and fingerprint unlocking method

Publications (1)

Publication Number Publication Date
CN116620054A true CN116620054A (en) 2023-08-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310620864.2A Pending CN116620054A (en) 2023-05-26 2023-05-26 Vehicle-mounted charging system and fingerprint unlocking method

Country Status (1)

Country Link
CN (1) CN116620054A (en)

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