CN113442728B - Comprehensive driving mileage management system of electric vehicle - Google Patents
Comprehensive driving mileage management system of electric vehicle Download PDFInfo
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- CN113442728B CN113442728B CN202110677191.5A CN202110677191A CN113442728B CN 113442728 B CN113442728 B CN 113442728B CN 202110677191 A CN202110677191 A CN 202110677191A CN 113442728 B CN113442728 B CN 113442728B
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- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000010295 mobile communication Methods 0.000 claims description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 238000007726 management method Methods 0.000 description 70
- 238000005516 engineering process Methods 0.000 description 8
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- 238000013528 artificial neural network Methods 0.000 description 3
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The application discloses a comprehensive management system for the driving mileage of an electric vehicle, which comprises the following components: the GPS module is used for detecting positioning information of the electric vehicle and sending the positioning information to the battery management system BMS; the resistance sensor module is arranged at the head position of the electric vehicle and used for detecting the vehicle resistance value received by the electric vehicle in the running process in real time and then sending the vehicle resistance value to the electronic control unit VCU; BMS, which is connected with the GPS module through a signal wire; the VCU is respectively connected with the BMS and the resistance sensor module and is used for sending a mileage shortage alarm signal to the BMS when the safe and effective mileage value is smaller than the remaining mileage of the electric vehicle; and the BMS is also used for sending out a mileage shortage alarm prompt instruction to a display module on the electric vehicle after receiving the mileage shortage alarm signal. The application can monitor the safe and effective driving mileage of the electric vehicle, and when the safe and effective driving mileage of the vehicle does not reach the remaining mileage, the application triggers the alarm reminding.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a comprehensive management system for the driving mileage of an electric vehicle.
Background
At present, as the scale of the battery pack is larger and larger, people using electric vehicles such as new energy automobiles, electric sharing bicycles and the like are more and more, meanwhile, the lithium ion battery has the characteristics of relatively high price, incapacity of being abused, intrinsic unsafe and the like, and a specialized battery management system BMS is required to be configured for integrating and managing the lithium battery, so that the best performance of the battery pack is ensured to be exerted to the greatest extent, and the safety of a driver is also ensured.
In the process of using electric vehicles such as new energy automobiles and electric sharing bicycles, the situation that the actual driving mileage of the electric vehicle is not in accordance with the estimated driving mileage displayed on the vehicle is easy to occur, for example, the estimated driving mileage displayed on the vehicle is 200 km, but the actual driving mileage can only be 100 km, so that more and more trailer accidents are caused, and meanwhile, the electric vehicle is suddenly powered off in the driving process, so that the electric vehicle is very dangerous and easy to cause collision accidents.
In addition, with the increase of the service time, the consistency of the single battery cells in the new energy automobile is worse and worse, and the voltage difference is overlarge, so that the calculation of the SOC (state of charge of the battery, also called as the residual electric quantity) of the battery cells is inaccurate. In addition, the problems of uneven temperature distribution, overlarge temperature difference and the like exist, so that the new energy automobile can not reach the designed mileage directly, and the product use feeling of a new energy automobile user is seriously influenced. Therefore, it is necessary for a user of an electric vehicle such as a new energy vehicle to know the operation information (e.g., information such as battery voltage, operation current, and remaining power) of the battery management system BMS in time.
However, there is no technology available at present, which can solve the above technical problems.
Disclosure of Invention
The application aims at providing a comprehensive management system for the driving mileage of an electric vehicle aiming at the technical defects existing in the prior art.
To this end, the present application provides a driving mileage integrated management system of an electric vehicle, comprising:
the GPS module is arranged at the top end of the electric vehicle and used for detecting the positioning information of the electric vehicle in real time and then sending the positioning information to the battery management system BMS;
the resistance sensor module is arranged at the head position of the electric vehicle and used for detecting the vehicle resistance value in unit time received by the electric vehicle in the running process in real time and then sending the vehicle resistance value to the electronic control unit VCU;
the battery management system BMS is connected with the GPS module through a signal wire and is used for receiving the positioning information of the electric vehicle sent by the GPS module in real time and then forwarding the positioning information to the electronic control unit VCU of the electric vehicle;
the electronic control unit VCU is respectively connected with the battery management system BMS and the resistance sensor module and is used for storing and setting the one-to-one correspondence between a plurality of different vehicle resistance values in unit time, a plurality of different vehicle actual driving mileage values in unit time and a plurality of different vehicle real-time power consumption in unit time received by the electric vehicle in advance; when the positioning information sent by the battery management system is not received, according to a plurality of vehicle resistance values in unit time received by the electric vehicle in the running process and sent by the resistance sensor module in real time, correspondingly reading actual running mileage values of the electric vehicle in a plurality of unit time and real-time power consumption of the electric vehicle in a plurality of different unit time, respectively summing the actual running mileage values of the electric vehicle in the plurality of unit time and the real-time power consumption of the electric vehicle in the plurality of different unit time, obtaining the actual running mileage values and the actual power consumption of the electric vehicle, and then sending the actual running mileage values and the actual power consumption to a battery management system BMS; and according to the difference between the total planned mileage of the electric vehicle and the actual mileage, the remaining mileage of the electric vehicle is obtained and recorded, and the remaining mileage of the electric vehicle is the safe and effective mileage.
The electronic control unit VCU is also used for comparing the remaining mileage of the electric vehicle with the safe and effective mileage after the safe and effective mileage of the electric vehicle is read, and sending a mileage shortage alarm signal to the battery management system BMS if the safe and effective mileage is smaller than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is further used for sending a mileage shortage alarm prompt instruction to a display module on the electric vehicle in real time after receiving the mileage shortage alarm signal sent by the electronic control unit VCU.
Preferably, the electronic control unit VCU is further configured to record, in real time, an actual driving range of the electric vehicle according to the positioning information of the electric vehicle sent by the battery management system BMS when the positioning information sent by the battery management system is received, and acquire and record a remaining range of the electric vehicle according to a difference between a total planned driving range of the electric vehicle and the actual driving range;
preferably, the display module on the electric vehicle is an instrument panel module on the electric vehicle.
Preferably, the mobile communication system further comprises a mobile communication module;
the mobile communication module is arranged at the top end of the electric vehicle, connected with the battery management system BMS, and used for receiving preset battery state information of the electric vehicle sent by the battery management system BMS in real time and then sending the information to an external lithium battery management platform;
correspondingly, the battery management system BMS is also used for sending preset battery state information of the electric vehicle to the mobile communication module in real time;
the preset battery state information of the electric vehicle is information including a battery voltage, an operating current and a remaining power.
Preferably, the mobile communication module is a 4G module integrated with the GPS module.
Preferably, the device also comprises an alarm;
the alarm is connected with the battery management system BMS through a signal wire and is used for receiving an alarm trigger signal sent by the battery management system BMS and then giving an alarm to a driver in real time;
correspondingly, the battery management system BMS is also used for sending an alarm triggering signal to the alarm in real time after receiving the mileage shortage signal sent by the electronic control unit VCU.
Preferably, the system also comprises a voice player;
the voice player is connected with the battery management system BMS through a signal wire and is used for receiving and playing preset battery state information of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run;
correspondingly, the battery management system BMS is used for being connected with an original motor controller on the electric vehicle through a signal wire and sending preset battery state information of the electric vehicle to the voice player in real time according to a motor starting operation prompt signal sent by the motor controller after the motor controller is controlled to start and operate.
Preferably, the display screen is further included;
the display screen is connected with the battery management system BMS through a signal wire and is used for receiving and displaying preset battery state information of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run and displaying safe and effective mileage values of the electric vehicle sent by the battery management system BMS;
and the battery management system BMS is also used for receiving the safe and effective mileage value of the electric vehicle sent by the electronic control unit VCU, forwarding the safe and effective mileage value to the display screen and forwarding the preset battery state information of the electric vehicle to the display screen.
Compared with the prior art, the technical scheme provided by the application has the advantages that the design is scientific, the safe and effective driving mileage of the electric vehicle (such as a new energy automobile or an electric sharing bicycle) installed by the system can be monitored, when the safe and effective driving mileage of the vehicle cannot reach the remaining mileage (namely the pre-driving mileage and the mileage which is about to continue to be driven) of the electric vehicle (such as the condition that the power consumption per driving mileage obviously increases because of road condition deviation or sudden cooling), the vehicle is triggered to send an alarm prompt to the driver, the accident that the electric vehicle breaks down halfway due to sudden power failure is effectively and reliably prevented, the driving safety of the automobile is further improved, the property safety and the personal safety of the driver and the passengers are guaranteed, popularization and application are facilitated, and great production practice significance is achieved.
Drawings
Fig. 1 is a block diagram of a driving mileage integrated management system of an electric vehicle according to the present application.
Detailed Description
In order that the manner in which the application is carried out will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not limiting of the application. It should be further noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In addition, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the term "mounted" and the like should be construed broadly, and may be fixed or removable, for example.
The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, the application provides a driving mileage integrated management system of an electric vehicle, which is an integrated management system of an advanced AI estimation method based on mileage optimization of a GPS positioning system and a control strategy thereof, and is applied to the electric vehicle (such as a new energy automobile or an electric sharing bicycle driven by battery power), wherein the system specifically comprises the following components:
the GPS module is arranged at the top end of the electric vehicle and used for detecting the positioning information of the electric vehicle in real time and then sending the positioning information to the battery management system BMS;
the resistance sensor module (namely, resistance detection module) is arranged at the head position of the electric vehicle and is used for detecting the vehicle resistance value in unit time received by the electric vehicle in the running process in real time and then sending the vehicle resistance value to the electronic control unit VCU;
the vehicle resistance value is the reverse side of the vehicle power value (including but not limited to air resistance and braking resistance), and the vehicle resistance value in unit time can clearly reflect the corresponding relation between the mileage of the vehicle in unit time and the consumed electric quantity SOC through BMS big data storage record.
The battery management system BMS is connected with the GPS module through a signal wire and is used for receiving the positioning information of the electric vehicle sent by the GPS module in real time and then forwarding the positioning information to an electronic control unit (VCU) of the electric vehicle;
the electronic control unit VCU is respectively connected with the battery management system BMS and the resistance sensor module and is used for storing and setting the one-to-one correspondence between the vehicle resistance value in a plurality of different unit time received by the electric vehicle and the vehicle real-time mileage value in a plurality of different unit time and the vehicle real-time power consumption in a plurality of different unit time in advance, when positioning information sent by the battery management system is not received (namely when the vehicle is positioned in a place where a GPS positioning signal is weak or not), the vehicle resistance value in a plurality of unit time received by the electric vehicle in real time according to the resistance sensor module is correspondingly read the vehicle real-time power consumption in a plurality of unit time received by the electric vehicle, and the vehicle real-time mileage value in a plurality of unit time and the vehicle real-time power consumption in a plurality of different unit time are respectively summed to obtain the actual travelled mileage value and the actual power consumption of the electric vehicle, and then the actual travelled mileage value and the actual power consumption of the electric vehicle are sent to the battery management system BMS; and according to the difference between the total planned mileage of the electric vehicle and the actual mileage, the remaining mileage of the electric vehicle is obtained and recorded, and the remaining mileage of the electric vehicle is the safe and effective mileage.
It should be noted that under the conventional condition that the GPS signal is stable, the safe and effective driving distance can be directly obtained by collecting the track and converting (that is, the difference between the total planned driving distance and the actual driving distance directly obtained by the GPS system, so as to obtain the safe and effective driving distance, wherein the actual driving distance is obtained according to the positioning information), but the GPS signal is not always in a stable state, and at this time, the safe and effective driving distance will have a larger error and always exist until the current electric quantity SOC is exhausted, and the situation of half-way lying down is frequently encountered. According to the application, different vehicle resistance values are corresponding to the corresponding relation between the mileage of the vehicle running in unit time and the consumed electric quantity SOC through a big data processing mode (Kalman filtering and neural network fuzzy estimation method), so that the actual running mileage of the vehicle can be stably recorded under the condition of GPS signal loss, and the safe and effective running mileage is obtained through conversion, thereby well avoiding the situation of half-lying nest.
In the application, the electronic control unit VCU is also used for recording the actual driving mileage of the electric vehicle in real time according to the positioning information of the electric vehicle sent by the battery management system BMS when the GPS positioning signal is good (namely when the positioning information sent by the battery management system is received), and acquiring and recording the remaining mileage of the electric vehicle according to the difference between the total planned mileage of the electric vehicle in the current trip and the actual driving mileage;
it should be noted that, the total planned mileage of the electric vehicle in this trip, that is, the planned mileage value to be travelled between the departure place and the destination of the user, may be obtained through the existing GPS positioning system or the existing navigation software such as a hundred-degree map. The electronic control unit VCU estimates, by means of a GPS positioning system, the range to be travelled by the electric vehicle from the current location to the destination (i.e. the pre-travelled range of the electric vehicle).
The electronic control unit VCU is further used for comparing the remaining mileage (namely the pre-driving mileage and the mileage which is about to continue driving) of the electric vehicle with the safe and effective driving mileage after the safe and effective driving mileage of the electric vehicle is read, and sending a mileage shortage warning signal to the battery management system BMS if the safe and effective driving mileage is smaller than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is further used for sending a mileage shortage alarm prompt instruction to a display module (such as an instrument panel module) on the electric vehicle in real time after receiving the mileage shortage alarm signal sent by the electronic control unit VCU, so as to remind a driver of paying attention to charging. Therefore, the half-way anchor break accident can be effectively avoided.
In a specific implementation of the present application, the integrated management system provided by the present application further includes:
the mobile communication module (such as a 4G module) is arranged at the top end of the electric vehicle, is connected with the battery management system BMS, and is used for receiving preset battery state information (such as battery voltage, working current, residual electric quantity and the like) of the electric vehicle sent by the battery management system BMS in real time and then sending the information to an external lithium battery management platform (such as a lithium battery management server on the Internet);
correspondingly, the battery management system BMS is further configured to send preset battery status information (such as battery voltage, operating current, and remaining power information) of the electric vehicle to the mobile communication module (such as the 4G module) in real time.
In particular, a mobile communication module (e.g., a 4G module) is integrated with a GPS module. In particular implementation, the battery management system BMS is connected with the 4G module through an RS485 signal line
For an electric vehicle (e.g., a new energy vehicle or an electric sharing bicycle driven by battery power), an important electric control system is a battery management system (Battery management system), abbreviated as BMS. It is similar to human brain, and can monitor the working state of car battery system including several battery units, and can control the starting operation and stopping of motor in electric vehicle and make mileage prompt.
In the application, in particular implementation, the integrated management system provided by the application further comprises an alarm;
the alarm is connected with the battery management system BMS through a signal wire and is used for receiving an alarm trigger signal sent by the battery management system BMS and then giving an alarm to a driver in real time (for example, an audible and visual alarm is given, and the alarm can specifically comprise a loudspeaker and a light-emitting diode which are recorded with preset sound fragments);
correspondingly, the battery management system BMS is also used for sending an alarm triggering signal to the alarm in real time after receiving the mileage shortage signal sent by the electronic control unit VCU.
In the application, in particular implementation, the integrated management system provided by the application further comprises a voice player (such as a loudspeaker);
the voice player is connected with the battery management system BMS through a signal wire and is used for receiving and playing preset battery state information (such as battery voltage, working current, residual electric quantity and the like) of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run;
correspondingly, the battery management system BMS is used for being connected with an original motor controller on the electric vehicle through a signal wire, and sending preset battery state information (such as battery voltage, working current, residual electric quantity and the like) of the electric vehicle to the voice player in real time according to a motor starting operation prompt signal sent by the motor controller after the motor controller controls the motor to start and operate.
In the application, in particular implementation, the integrated management system provided by the application further comprises a display screen (such as an LCD liquid crystal display screen);
the display screen is connected with the battery management system BMS through a signal wire and is used for receiving and displaying preset battery state information (such as battery voltage, working current, residual electric quantity and the like) of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run and displaying safe and effective mileage values of the electric vehicle sent by the battery management system BMS;
and the battery management system BMS is also used for receiving the safe and effective mileage value of the electric vehicle sent by the electronic control unit VCU, forwarding the safe and effective mileage value to the display screen and forwarding the preset battery state information of the electric vehicle to the display screen.
The safe and effective mileage value can be preset according to the needs of the user.
In the application, the resistance sensor module is also used for detecting the corresponding relation between the real-time power consumption and mileage of the electric vehicle and then sending the corresponding relation to the electronic control unit VCU.
Correspondingly, the electronic control unit VCU is also used for recording the corresponding relation between the real-time power consumption and mileage detected by the resistance sensor module.
It should be noted that, for the present application, the resistance detector module (i.e. the resistance sensor module), under the condition that the GPS signal is good, the electronic control unit VCU may record a large amount of corresponding relations between real-time power consumption and mileage of the electric vehicle detected by different resistance values in unit time, and the real-time power consumption is the reduction amount of the SOC. When the GPS signal is weak, the corresponding relation between the mileage and the SOC of the vehicle in unit time is corresponding to different resistance values by a big data processing mode (for example, based on Kalman filtering and a neural network fuzzy estimation method), so as to obtain the driving mileage value.
In the specific implementation, when the mobile communication module (such as a 4G module) and the GPS module are in weak signals or lost signals, the battery management system BMS sends out a start advanced AI estimation method and a control strategy thereof, and sends out a trigger record control signal to the electronic control unit VCU, so that the electronic control unit VCU is controlled to continuously record actual driving mileage and residual mileage data of the electric vehicle, and the safe and reliable operation purpose is achieved.
It should be noted that, for the present application, the advanced AI estimation method is executed by the electronic control unit VCU, and the big data intelligent estimation method can set up a mathematical model according to the existing big data analysis method (for example, based on kalman filtering and neural network fuzzy estimation method), collect the corresponding relation between the corresponding driving mileage under different resistance values and the SOC electric quantity consumption, and complete the model according to a large amount of data analysis, when the data amount is large enough, the estimation method can completely replace the existing technology to obtain the actual driving mileage and the remaining mileage (i.e. the safe and effective driving mileage that needs to continue driving next) by means of GPS positioning.
For the present application, the control strategy employed is: the strategy is to add a big data intelligent estimation method on the calculated mileage of the traditional GPS technology, switch the AI mode in time after the error occurs in the traditional technology, absolutely improve the precision, record the resistance value of the vehicle running in real time through a resistance detector module, and simultaneously record the corresponding relation between the actual mileage running in unit time (the default is the constant resistance value in the time period) and the consumed SOC electric quantity, establish a big data model, the relation is continuously recorded by the vehicle in a continuous running system, the model is more and more close to the actual condition along with the accumulation of data, and the electronic control unit VCU is immediately switched to the AI mode when the error occurs in the traditional GPS technology, thereby greatly improving the false report condition of the current vehicle mileage.
It should be noted that, when the GPS module and the 4G module are located in a place where the signals are weak, the BMS sends a mileage impending offset signal to the electronic control unit VCU, and triggers the electronic control unit VCU to start the existing advanced AI estimation method, so that the obtained actual driving mileage of the electric vehicle is very accurate with the preset safe and effective driving mileage.
That is, the application can monitor the safe and effective driving mileage of the electric vehicle installed by the system in real time, and when the positioning signal is lost, the electronic control unit VCU is triggered to start to operate the existing advanced AI estimation method, so that the driving safety and reliability of the vehicle are improved.
It should be noted that, for the application, the GPS positioning technology and the resistance detection technology are adopted, the electronic control unit VCU is abutted, after receiving the related data, the electronic control unit VCU starts to perform data conversion operation, and according to the preset corresponding relation, according to the vehicle resistance value received by the electric vehicle in the running process, a limit safe mileage range (namely safe mileage) of normal running of the vehicle is intelligently converted, if the remaining mileage (namely the pre-running mileage and the mileage to be continuously run) of the electric vehicle exceeds the limit safe mileage range, the battery management system BMS is triggered to automatically send out insufficient mileage treatment, so as to achieve the purpose of safe running;
in the application, the resistance sensor module can be a common resistance sensor installed on the existing automobile, which is the prior art and is not described in detail.
It should be noted that, in the specific implementation, the resistance sensor module may be a digital resistance sensor and a torque sensor manufactured by Beijing Haibhua technology limited company, and may be used to test resistance values well for measuring real-time torque, rotation speed and power values of the vehicle. The electronic control unit VCU can be converted by the data collected by the electronic control unit VCU and finally used in a big data model.
In the present application, in a specific implementation, the 4G module and the GPS module may be common modules installed on an existing automobile, which is a prior art and will not be described in detail.
In the application, the signal lines are a CAN (controller area network) bus and an RS485 bus.
In the present application, the electronic control unit VCU may be a programmable controller PLC or a central processing unit CPU mounted on an electric vehicle.
It should be noted that, for the driving mileage integrated management system of the electric vehicle provided by the application, the real-time consumption mileage (i.e. actual driving mileage) and the remaining mileage of the driven electric vehicle CAN be accurately detected through the resistance detection module (i.e. resistance sensor module) and the existing advanced AI estimation method, and data communication is performed through the CAN bus and the electronic control unit VCU, so that the accurate mileage conversion is realized, and the automatic safe driving function is realized, and the accident that the automobile breaks down halfway due to sudden power failure is avoided.
In addition, the application can realize other normal functions through the battery management system BMS, including: the method comprises the following steps of detecting the total voltage of the battery pack, detecting insulation, detecting the voltage of a single battery, performing active Or passive equalization on the single battery cell, performing thermal management control, performing fault diagnosis and protection, performing current charge and discharge states, performing current magnitude, performing SOC, performing SOH (battery capacity), performing CAN communication and other functions.
In addition, in particular implementation, the application can also save the product number and the corresponding test result of the battery management system BMS, and voice broadcast the current vehicle driving mileage and the like before each start, thereby bringing convenience to the trip of people.
It should be noted that, in the specific implementation of the present application, the safe driving mileage and the current resistance detection information of the vehicle can be fed back completely, and the electronic control unit VCU converts the driving mileage and the BMS limits the power, so as to achieve the purpose of automatic safe driving. The middle signal transmission, with the help of the form of CAN bus, the main operation is that the car owner starts the automatic BMS of opening of vehicle and the resistance detection and the 4G module that are connected, and then reads all information of vehicle battery package, then carries out voice broadcast and come out, realizes safe trip.
The application has high functional integration level, simple and reasonable design, and good reliability and manufacturability, and can read the safe and effective mileage of the vehicle and all information of the battery pack through the BMS and the matched 4G module and resistance detection module and report the information to the display screen, so that a customer can know all battery states, and the safe and safe trip is realized.
In summary, compared with the prior art, the comprehensive management system for the driving mileage of the electric vehicle provided by the application is scientific in design, can monitor the safe and effective driving mileage of the electric vehicle (such as a new energy automobile or an electric sharing bicycle) installed by the system, and when the safe and effective driving mileage of the vehicle cannot reach the remaining mileage (namely the pre-driving mileage and the mileage which is about to continue to be driven by the electric vehicle) (such as the condition that the power consumption of the unit driving mileage is obviously increased due to road condition deviation or sudden cooling), the vehicle is triggered to send an alarm prompt to the driver, thereby effectively and reliably preventing the electric vehicle from half-way anchoring accidents caused by sudden power failure, further improving the driving safety of the vehicle, guaranteeing the property and personal safety of the driver and the passengers, being beneficial to popularization and application, and having great production practice significance.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (7)
1. A travel distance integrated management system of an electric vehicle, comprising:
the GPS module is arranged at the top end of the electric vehicle and used for detecting the positioning information of the electric vehicle in real time and then sending the positioning information to the battery management system BMS;
the resistance sensor module is arranged at the head position of the electric vehicle and used for detecting the vehicle resistance value in unit time received by the electric vehicle in the running process in real time and then sending the vehicle resistance value to the electronic control unit VCU;
the battery management system BMS is connected with the GPS module through a signal wire and is used for receiving the positioning information of the electric vehicle sent by the GPS module in real time and then forwarding the positioning information to the electronic control unit VCU of the electric vehicle;
the electronic control unit VCU is respectively connected with the battery management system BMS and the resistance sensor module and is used for storing and setting the one-to-one correspondence between a plurality of different vehicle resistance values in unit time, a plurality of different vehicle actual driving mileage values in unit time and a plurality of different vehicle real-time power consumption values in unit time received by the electric vehicle in advance; when the positioning information sent by the battery management system is not received, according to a plurality of vehicle resistance values in unit time received by the electric vehicle in the running process and sent by the resistance sensor module in real time, correspondingly reading actual running mileage values of the electric vehicle in a plurality of unit time and real-time power consumption of the electric vehicle in a plurality of different unit time, respectively summing the actual running mileage values of the electric vehicle in the plurality of unit time and the real-time power consumption of the electric vehicle in the plurality of different unit time, obtaining the actual running mileage values and the actual power consumption of the electric vehicle, and then sending the actual running mileage values and the actual power consumption to a battery management system BMS; according to the difference between the total planned mileage of the electric vehicle and the actual mileage, the remaining mileage of the electric vehicle is obtained and recorded, and the remaining mileage of the electric vehicle is the safe and effective mileage;
the electronic control unit VCU is also used for comparing the remaining mileage of the electric vehicle with the safe and effective mileage after the safe and effective mileage of the electric vehicle is read, and sending a mileage shortage alarm signal to the battery management system BMS if the safe and effective mileage is smaller than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is also used for sending a mileage shortage alarm prompt instruction to a display module on the electric vehicle in real time after receiving the mileage shortage alarm signal sent by the electronic control unit VCU;
the electronic control unit VCU is further used for recording the actual driving mileage of the electric vehicle in real time according to the positioning information of the electric vehicle sent by the battery management system BMS when the positioning information sent by the battery management system is received, and obtaining and recording the remaining mileage of the electric vehicle according to the difference between the total planned mileage of the electric vehicle in the current trip and the actual driving mileage.
2. The integrated management system for driving range of electric vehicle according to claim 1, wherein the display module on the electric vehicle is an instrument panel module on the electric vehicle.
3. The integrated driving mileage management system of claim 1, further comprising a mobile communication module;
the mobile communication module is arranged at the top end of the electric vehicle, connected with the battery management system BMS, and used for receiving preset battery state information of the electric vehicle sent by the battery management system BMS in real time and then sending the information to an external lithium battery management platform;
correspondingly, the battery management system BMS is also used for sending preset battery state information of the electric vehicle to the mobile communication module in real time;
the preset battery state information of the electric vehicle is information including a battery voltage, an operating current and a remaining power.
4. The integrated driving range management system of an electric vehicle according to claim 3, wherein the mobile communication module is a 4G module integrated with the GPS module.
5. The electric vehicle mileage integrated-management system according to any one of claims 1 to 4, further comprising an alarm;
the alarm is connected with the battery management system BMS through a signal wire and is used for receiving an alarm trigger signal sent by the battery management system BMS and then giving an alarm to a driver in real time;
correspondingly, the battery management system BMS is also used for sending an alarm triggering signal to the alarm in real time after receiving the mileage shortage signal sent by the electronic control unit VCU.
6. The electric vehicle driving mileage integrated management system according to any one of claims 1 to 4, further comprising a voice player;
the voice player is connected with the battery management system BMS through a signal wire and is used for receiving and playing preset battery state information of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run;
correspondingly, the battery management system BMS is used for being connected with an original motor controller on the electric vehicle through a signal wire and sending preset battery state information of the electric vehicle to the voice player in real time according to a motor starting operation prompt signal sent by the motor controller after the motor controller is controlled to start and operate.
7. The electric vehicle driving distance integrated management system according to any one of claims 1 to 4, further comprising a display screen;
the display screen is connected with the battery management system BMS through a signal wire and is used for receiving and displaying preset battery state information of the electric vehicle sent by the battery management system BMS in real time after the motor of the electric vehicle starts to run and displaying safe and effective mileage values of the electric vehicle sent by the battery management system BMS;
and the battery management system BMS is also used for receiving the safe and effective mileage value of the electric vehicle sent by the electronic control unit VCU, forwarding the safe and effective mileage value to the display screen and forwarding the preset battery state information of the electric vehicle to the display screen.
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| CN116338500B (en) * | 2023-05-26 | 2023-08-08 | 南京志卓电子科技有限公司 | Rail transit vehicle storage battery operation monitoring system |
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