CN116534033A - Operation range limiting method and system for new energy automobile - Google Patents

Operation range limiting method and system for new energy automobile Download PDF

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Publication number
CN116534033A
CN116534033A CN202310347008.4A CN202310347008A CN116534033A CN 116534033 A CN116534033 A CN 116534033A CN 202310347008 A CN202310347008 A CN 202310347008A CN 116534033 A CN116534033 A CN 116534033A
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China
Prior art keywords
vehicle
domain controller
power domain
box
cloud server
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CN202310347008.4A
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Chinese (zh)
Inventor
王军德
张讲
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Wuhan Kotei Informatics Co Ltd
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Wuhan Kotei Informatics Co Ltd
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Priority to CN202310347008.4A priority Critical patent/CN116534033A/en
Publication of CN116534033A publication Critical patent/CN116534033A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • 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
    • B60R25/04—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 operating on the propulsion system, e.g. engine or drive motor
    • B60R25/045—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 operating on the propulsion system, e.g. engine or drive motor by limiting or cutting the electrical supply to the propulsion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/14—Adaptive cruise control
    • B60W30/143—Speed control
    • B60W30/146—Speed limiting
    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • 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
    • G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/22—Standstill, e.g. zero speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2554/00—Input parameters relating to objects
    • B60W2554/80—Spatial relation or speed relative to objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/45—External transmission of data to or from the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transportation (AREA)
  • Signal Processing (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a method and a system for limiting the operation range of a new energy automobile, wherein the system comprises three hardware terminals of a cloud server, a vehicle-mounted T-BOX and a power domain controller, and the method comprises the following steps: powering on the whole car to enter a ready state, and starting up the T-BOX; the T-BOX completes the positioning of the operation vehicle, and reports the real-time position of the vehicle to the cloud server; the cloud server receives the position information and judges whether the operation vehicle is in an operation range: if the vehicle is not in the operation range, a vehicle locking instruction is sent to the power domain controller, the power domain controller forcibly locks the vehicle, the whole vehicle is powered down, and the ready state is exited; if the distance between the operating vehicle and the operating boundary is larger than a first preset distance, sending a normal operation marker bit to the operating vehicle T-BOX, receiving an instruction by the T-BOX, sending the normal operation marker bit to the power domain controller, receiving the instruction by the power domain controller, and powering on the whole vehicle normally.

Description

Operation range limiting method and system for new energy automobile
Technical Field
The invention relates to the technical field of vehicle control, in particular to a method and a system for limiting the operation range of a new energy automobile.
Background
With the rapid development of new energy automobile industry, more and more electric automobiles enter the market, such as sharing bicycles, and the sharing of new energy automobiles also starts to gradually enter the field of view of the public. In order to facilitate the use of the user and the operation, maintenance and management of the platform to the vehicle, the user needs to make certain restrictions on the running range of the vehicle, monitor and manage the position and the movement state of the vehicle during the operation of the vehicle, and under certain conditions, the vehicle enters a state of speed limiting running or starting prohibition, so that the vehicle is restricted to run in a specified area.
In the prior art, the following problems generally occur in the operation control of the new energy automobile:
1. the remote locking of the traditional shared automobile needs to ensure the real-time communication between the operation vehicle and the server, and when the operation vehicle runs to a place with poor signals such as a tunnel, the connection can be lost, so that the misjudgment of locking can be caused.
2. The remote locking of the traditional shared automobile stores the overtime time into the local hard disk device, and if the communication overtime fault occurs, the remote locking waits for the data to be reissued after power-on. If an abnormal condition such as power failure occurs, data is lost.
The traditional remote control strategy of the shared automobile is single, only the automobile locking treatment method is considered, most of the risk behaviors are not preprocessed, and the strategy design is not humanized enough.
Disclosure of Invention
The invention provides a method and a system for limiting the operation range of a new energy automobile aiming at least one technical problem existing in the prior art.
In a first aspect, the present invention provides a method for limiting an operation range of a new energy automobile, where an implementation main body of the method includes three hardware terminals including a cloud server, a vehicle-mounted T-BOX, and a power domain controller, and the method includes the following steps:
powering on the whole car to enter a ready state, and starting up the T-BOX;
the T-BOX completes the positioning of the operation vehicle, and reports the real-time position of the vehicle to the cloud server;
the cloud server receives the position information and judges whether the operation vehicle is in an operation range:
if the vehicle is not in the operation range, a vehicle locking instruction is sent to the power domain controller, the power domain controller forcibly locks the vehicle, the whole vehicle is powered down, and the ready state is exited;
if the distance between the operating vehicle and the operating boundary is larger than a first preset distance, sending a normal operation marker bit to the operating vehicle T-BOX, receiving an instruction by the T-BOX, sending the normal operation marker bit to the power domain controller, receiving the instruction by the power domain controller, and powering on the whole vehicle normally.
Further, the T-BOX finishes positioning the operation vehicle, starts timing a first preset time while reporting the real-time position of the vehicle to the cloud server, and sends a communication fault zone bit to the power domain controller if a cloud server instruction is not received within the first preset time;
the power domain controller receives the communication fault zone bit from the T-BOX, reads the timeout accumulated time of the T-BOX and the cloud server stored in the EEPROM when the EEPROM is powered down last time, and calculates the total communication timeout duration;
judging whether the forced locking or the speed limiting of the vehicle or the normal operation of the whole vehicle is carried out according to the total communication timeout duration.
Further, the communication timeout total time=the current power-on accumulated timeout time+the last power-off timeout time EEPROM value.
Further, judging whether to perform forced locking or speed limiting of the vehicle or normal operation of the whole vehicle according to the total communication timeout duration, including:
if the total communication timeout duration is greater than the second preset time, the power domain controller forcibly locks the vehicle;
if the communication timeout total time is greater than the third preset time and less than the second preset time, the power domain controller controls the speed limit of the vehicle;
otherwise, the whole vehicle works normally.
Further, the power domain controller forcibly locks the vehicle by linearly reducing the torque output until the torque output returns to zero every cycle in the time t, and then forcibly setting the key signal to 0 to finish locking the vehicle.
Further, the cloud server receives the position information, determines whether the operation vehicle is in an operation range, and further includes:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
1) Judging whether the distance between the operation vehicle and the operation boundary is larger than a second preset distance and smaller than or equal to a first preset distance, if so, the cloud server sends an instruction indicating that the operation vehicle is at the operation range boundary to the T-BOX;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is at the boundary of the operation range, and a first speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a first speed limit.
Further, the cloud server receives the position information, determines whether the operation vehicle is in an operation range, and further includes:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
judging whether the distance between the operation vehicle and the operation boundary is smaller than or equal to a second preset distance, if so, sending an instruction indicating that the operation vehicle is about to drive away from the operation range to the T-BOX by the cloud server;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is about to drive out of an operation range, and a second speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a first speed limit.
Further, the method further comprises: the power domain controller monitors whether the vehicle is powered down, if so, the power domain controller judges whether the operation vehicle is in a communication fault state at the moment, if so, the accumulated time of the communication fault at the moment is written into the EEPROM, and then the whole vehicle is powered down and exits from a ready state.
In a second aspect, the present invention provides an operation range limiting system for a new energy automobile, including: the method comprises three hardware terminals, namely a cloud server, a vehicle-mounted T-BOX and a power domain controller, wherein the three hardware terminals limit the operation range of the new energy automobile through the method of the first aspect of the invention.
In a third aspect, the present invention provides a new energy automobile, where the new energy automobile is provided with a vehicle-mounted T-BOX and a power domain controller, and interacts with a cloud server through the method of the first aspect of the present invention to limit an operation range.
The beneficial effects of the invention are as follows: by the method provided by the embodiment, the following technical problems can be solved:
1. the problem that the remote locking cannot be carried out by means of positioning due to abnormal communication with a cloud server when a new energy automobile is powered on is solved;
2. the problem of remote speed limitation when the new energy automobile runs to the vicinity of the boundary in the operation range is solved;
3. the problem of remote locking of the new energy automobile when the new energy automobile runs out of the operation range is solved;
4. the problem of speed limitation when the new energy automobile and the cloud server cannot be positioned after losing connection is solved;
5. the problem of starting prohibition when the new energy automobile cannot be positioned after losing connection with the cloud server is solved;
6. the problem that the new energy automobile resets the power-on communication fault time under the communication fault state is solved;
7. the problem of vehicle driving limitation after the new energy automobile T-BOX goes offline is solved.
Drawings
Fig. 1 is a schematic flow chart of a method for limiting an operation range of a new energy automobile according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, the term "for example" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The implementation main body of the operation range limiting method of the new energy automobile provided by the embodiment of the invention comprises three hardware terminals, namely a cloud server, a vehicle-mounted T-BOX and a power domain controller. The division of the work is as follows:
the cloud server is mainly responsible for receiving the position information reported by the T-BOX end and judging whether the vehicle is near the boundary in the operation range or not and is in the operation range or not according to the position information. And after judging that the vehicle is finished, sending corresponding processing instructions (normal operation instructions, speed limiting instructions and vehicle locking instructions) to the vehicle-mounted T-BOX end.
The vehicle-mounted T-BOX is in charge of communicating with the cloud server, receiving a remote control instruction of the cloud server, and forwarding the instruction to the power domain controller in a vehicle-mounted CAN network/Ethernet communication mode.
The vehicle-mounted T-BOX reports position information of an operating vehicle to a server at regular time and waits for an instruction of the server, and after receiving a management instruction of a cloud server, the T-BOX sends sound, light and text signals to remind a renter and sends a limiting signal to a power domain controller.
The onboard T-BOX also monitors the communication status with the cloud server. If the communication is abnormal, a server effective instruction is not received within the waiting time, and the communication abnormality of the T-box and the cloud server needs to be timely reported to the power domain controller.
The power domain controller receives the instruction sent by the T-BOX and executes the instruction, including a normal operation instruction, a speed limiting instruction and a car locking instruction. When the communication between the T-BOX and the cloud server is overtime, and a fault zone bit is sent, the communication fault time is accumulated in the power domain controller, and when the timing reaches a certain time, the torque output of the vehicle is limited, so that the vehicle speed is limited in a certain range; and when the timing exceeds the rated maximum time, the whole vehicle is powered down, and restarting is forbidden.
Specifically, the method comprises the following steps:
powering on the whole car to enter a ready state, and starting up the T-BOX;
the T-BOX completes the positioning of the operation vehicle, and reports the real-time position of the vehicle to the cloud server;
the cloud server receives the position information and judges whether the operation vehicle is in an operation range:
if the vehicle is not in the operation range, a vehicle locking instruction is sent to the power domain controller, the power domain controller forcibly locks the vehicle, the whole vehicle is powered down, and the ready state is exited;
if the distance between the operating vehicle and the operating boundary is larger than a first preset distance, sending a normal operation marker bit to the operating vehicle T-BOX, receiving an instruction by the T-BOX, sending the normal operation marker bit to the power domain controller, receiving the instruction by the power domain controller, and powering on the whole vehicle normally. Preferably, in this embodiment, the first preset distance is 5km.
Further, the T-BOX finishes positioning the operation vehicle, starts timing a first preset time while reporting the real-time position of the vehicle to the cloud server, and sends a communication fault zone bit to the power domain controller if a cloud server instruction is not received within the first preset time; preferably, the first preset time in this embodiment is set to 30 seconds.
The power domain controller receives the communication fault zone bit from the T-BOX, reads the timeout accumulated time of the T-BOX and the cloud server stored in the EEPROM when the EEPROM is powered down last time, and calculates the total communication timeout duration;
judging whether the forced locking or the speed limiting of the vehicle or the normal operation of the whole vehicle is carried out according to the total communication timeout duration.
Further, the communication timeout total time=the current power-on accumulated timeout time+the last power-off timeout time EEPROM value.
Further, judging whether to perform forced locking or speed limiting of the vehicle or normal operation of the whole vehicle according to the total communication timeout duration, including:
if the total communication timeout duration is greater than the second preset time, the power domain controller forcibly locks the vehicle;
if the communication timeout total time is greater than the third preset time and less than the second preset time, the power domain controller controls the speed limit of the vehicle; at this time, the speed limit was performed on the vehicle at 60 km/h.
Otherwise, the whole vehicle works normally. Preferably, in this embodiment, the second preset time is 60 minutes, and the third preset time is 20 minutes.
Further, the power domain controller forcibly locks the vehicle by linearly reducing the torque output until the torque output returns to zero every cycle in the time t, and then forcibly setting the key signal to 0 to finish locking the vehicle.
Further, the cloud server receives the position information, determines whether the operation vehicle is in an operation range, and further includes:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
1) Judging whether the distance between the operation vehicle and the operation boundary is larger than a second preset distance and smaller than or equal to a first preset distance, if so, the cloud server sends an instruction indicating that the operation vehicle is at the operation range boundary to the T-BOX;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is at the boundary of the operation range, and a first speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a first speed limit. Preferably, in this embodiment, the second preset distance is 3km, and the first speed limit is 20km/h.
Further, the cloud server receives the position information, determines whether the operation vehicle is in an operation range, and further includes:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
judging whether the distance between the operation vehicle and the operation boundary is smaller than or equal to a second preset distance, if so, sending an instruction indicating that the operation vehicle is about to drive away from the operation range to the T-BOX by the cloud server;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is about to drive out of an operation range, and a second speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a second speed limit. Preferably, in this embodiment the second speed limit is 10km/h.
Further, the method further comprises: the power domain controller monitors whether the vehicle is powered down, if so, the power domain controller judges whether the operation vehicle is in a communication fault state at the moment, if so, the accumulated time of the communication fault at the moment is written into the EEPROM, and then the whole vehicle is powered down and exits from a ready state.
The following describes a method for limiting the operation range of a new energy automobile with a specific example, as shown in fig. 1, including the following sub-steps:
step 1: starting the whole vehicle Ready and the T-BOX;
step 2: the T-BOX finishes the positioning of the operation vehicle, reports the real-time position of the vehicle to the server, and starts timing for 30 seconds;
step 3: the cloud server receives the position information, judges whether the operation vehicle is in an operation range, and if yes, executes the step 4; otherwise, the step 7 is executed in a jumping manner, and the situation 1 is corresponding;
step 4: judging whether the distance between the operation vehicle and the operation boundary is less than or equal to 3km, if not, executing the step 5, if so, jumping to execute the step 7, and corresponding to the case 2;
step 5: judging whether the distance between the operation vehicle and the operation boundary is more than 3km and less than or equal to 5km, if not, executing the step 6, if so, jumping to execute the step 7, and corresponding to the situation 3;
step 6: the cloud server sends a flag bit capable of working normally to the T-BOX of the operation vehicle, and the step 8 is executed in a jumping mode;
step 7: in the step 2, the T-BOX waits for 30 seconds, if a cloud server instruction is not received within 30 seconds, a communication fault zone bit is sent to the power domain controller, and the step 13 is executed in a jumping manner; if the instruction is received, the following conditions are corresponding:
case 1: when the T-BOX receives that the operation vehicle is not in the operation range, a vehicle locking instruction is sent to the power domain controller, and the step 10 is executed in a jumping mode;
case 2: when the T-BOX receives that the operation vehicle is about to drive out of the operation range, sending a sound image signal to remind a driver of the fact that the operation vehicle is about to drive out of the operation range, sending a speed limit 10km/h instruction to a power domain controller, and jumping to execute the step 11;
case 3: when the T-BOX receives that the operation vehicle is at the boundary of the operation range, sending a sound image signal to remind a passenger that the vehicle is at the boundary of the operation range, sending a speed limit 20km/h instruction to the power domain controller, and jumping to execute the step 12;
step 8: the T-BOX receives the instruction and sends a normal operation zone bit to the power domain controller;
step 9: the power domain controller receives the instruction, the whole vehicle is electrified in normal operation, and the step 19 is executed in a jumping manner;
step 10: the power domain controller receives a car locking instruction, linearly reduces torque output until the torque output returns to zero every cycle in time t, then forcibly sets a key signal to 0 to finish car locking, and jumps to execute step 22;
step 11; the power domain controller receives a command of limiting the vehicle speed, the limiting the vehicle speed works within 10km/h, and the step 19 is skipped to be executed;
step 12; the power domain controller receives a command of limiting the vehicle speed, the limiting the vehicle speed works within 20km/h, and the step 19 is skipped to be executed;
step 13: the power domain controller receives the communication fault zone bit from the T-BOX, and reads the timeout accumulated time of the T-BOX and the server when the EEPROM is powered down last time;
step 14: calculating the total communication timeout duration (total duration = current power-on accumulated timeout time + last power-off timeout time EEPROM value);
step 15: judging whether the total communication timeout duration is greater than 60 minutes, if so, forcibly locking the vehicle, and executing the step 10; if not, executing the step 16;
step 16: judging whether the total communication timeout duration is greater than 20 minutes and less than 60 minutes, if so, the vehicle speed limit is required to be carried out, the speed limit is 60km/h instruction, and executing the step 17; if not, go to step 18;
step 17: the power domain controller limits the speed of the vehicle to 60km/h, and the step 19 is executed in a jumping way;
step 18: the power domain controller receives the instruction and the whole vehicle works normally;
step 19: is power down? If yes, go to step 20; otherwise, returning to the execution step 2;
step 20: judging whether the communication is in a communication fault state at the moment, if so, executing the step 21; otherwise, jumping to execute step 22;
step 21: writing the accumulated time of the communication faults into the EEPROM;
step 22: and the whole vehicle is powered down, and the Ready state is exited.
Based on the above method, the embodiment of the invention also provides an operation range limiting system of the new energy automobile, which comprises the following steps: the method comprises three hardware terminals, namely a cloud server, a vehicle-mounted T-BOX and a power domain controller, wherein the three hardware terminals limit the operation range of the new energy automobile through the method of the first aspect of the invention.
The embodiment of the invention also provides a new energy automobile, which is provided with the vehicle-mounted T-BOX and the power domain controller, and interacts with the cloud server through the method of the first aspect of the invention to limit the operation range.
By the method provided by the embodiment, the following technical problems are solved:
1. the problem that the remote locking cannot be carried out by means of positioning due to abnormal communication with a cloud server when a new energy automobile is powered on is solved;
2. the problem of remote speed limitation when the new energy automobile runs to the vicinity of the boundary in the operation range is solved;
3. the problem of remote locking of the new energy automobile when the new energy automobile runs out of the operation range is solved;
4. the problem of speed limitation when the new energy automobile and the cloud server cannot be positioned after losing connection is solved;
5. the problem of starting prohibition when the new energy automobile cannot be positioned after losing connection with the cloud server is solved;
6. the problem that the new energy automobile resets the power-on communication fault time under the communication fault state is solved;
7. the problem of vehicle driving limitation after the new energy automobile T-BOX goes offline is solved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The implementation main body of the method comprises three hardware terminals of a cloud server, a vehicle-mounted T-BOX and a power domain controller, and the method is characterized by comprising the following steps:
powering on the whole car to enter a ready state, and starting up the T-BOX;
the T-BOX completes the positioning of the operation vehicle, and reports the real-time position of the vehicle to the cloud server;
the cloud server receives the position information and judges whether the operation vehicle is in an operation range:
if the vehicle is not in the operation range, a vehicle locking instruction is sent to the power domain controller, the power domain controller forcibly locks the vehicle, the whole vehicle is powered down, and the ready state is exited;
if the distance between the operating vehicle and the operating boundary is larger than a first preset distance, sending a normal operation marker bit to the operating vehicle T-BOX, receiving an instruction by the T-BOX, sending the normal operation marker bit to the power domain controller, receiving the instruction by the power domain controller, and powering on the whole vehicle normally.
2. The method of claim 1, wherein the T-BOX completes positioning of the operating vehicle, begins timing a first preset time while reporting the real-time position of the vehicle to the cloud server, and if no cloud server instruction is received within the first preset time, sends a communication failure flag bit to the power domain controller;
the power domain controller receives the communication fault zone bit from the T-BOX, reads the timeout accumulated time of the T-BOX and the cloud server stored in the EEPROM when the EEPROM is powered down last time, and calculates the total communication timeout duration;
judging whether the forced locking or the speed limiting of the vehicle or the normal operation of the whole vehicle is carried out according to the total communication timeout duration.
3. The method of claim 2, wherein the communication timeout total time = current power-up accumulated timeout time + last power-down timeout time EEPROM value.
4. The method of claim 2, wherein determining whether to perform forced locking or speed limiting or normal operation of the vehicle based on the total communication timeout duration comprises:
if the total communication timeout duration is greater than the second preset time, the power domain controller forcibly locks the vehicle;
if the communication timeout total time is greater than the third preset time and less than the second preset time, the power domain controller controls the speed limit of the vehicle;
otherwise, the whole vehicle works normally.
5. The method of claim 4, wherein the power domain controller forcing the lock comprises linearly decreasing the torque output until zero for each cycle in time t, and then forcing the key signal to 0 to complete the lock.
6. The method of claim 1, wherein the cloud server receives the location information, determines whether the carrier vehicle is within an operating range, and further comprising:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
1) Judging whether the distance between the operation vehicle and the operation boundary is larger than a second preset distance and smaller than or equal to a first preset distance, if so, the cloud server sends an instruction indicating that the operation vehicle is at the operation range boundary to the T-BOX;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is at the boundary of the operation range, and a first speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a first speed limit.
7. The method of claim 6, wherein the cloud server receives the location information, determines whether the carrier vehicle is within an operating range, and further comprising:
if the distance between the operation vehicle and the operation boundary is smaller than or equal to a first preset distance in the operation range, the following judgment is carried out:
judging whether the distance between the operation vehicle and the operation boundary is smaller than or equal to a second preset distance, if so, sending an instruction indicating that the operation vehicle is about to drive away from the operation range to the T-BOX by the cloud server;
the T-BOX sends out a sound image signal to remind passengers that the operation vehicle is about to drive out of an operation range, and a second speed limiting instruction is sent to the power domain controller;
the power domain controller receives a vehicle speed limiting command, and the vehicle speed limiting command is used for limiting the vehicle speed to work in a second speed limit.
8. The method of any one of claims 1-7, further comprising: the power domain controller monitors whether the vehicle is powered down, if so, the power domain controller judges whether the operation vehicle is in a communication fault state at the moment, if so, the accumulated time of the communication fault at the moment is written into the EEPROM, and then the whole vehicle is powered down and exits from a ready state.
9. An operation range limiting system for a new energy automobile, comprising: the method comprises three hardware terminals of a cloud server, a vehicle-mounted T-BOX and a power domain controller, wherein the three hardware terminals limit the operation range of the new energy automobile through the method of any one of claims 1-8.
10. A new energy automobile, characterized in that the new energy automobile is provided with an onboard T-BOX and a power domain controller, and interacts with a cloud server through the method of any one of claims 1-8 to limit the operation range.
CN202310347008.4A 2023-03-31 2023-03-31 Operation range limiting method and system for new energy automobile Pending CN116534033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310347008.4A CN116534033A (en) 2023-03-31 2023-03-31 Operation range limiting method and system for new energy automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310347008.4A CN116534033A (en) 2023-03-31 2023-03-31 Operation range limiting method and system for new energy automobile

Publications (1)

Publication Number Publication Date
CN116534033A true CN116534033A (en) 2023-08-04

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Application Number Title Priority Date Filing Date
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