CN113442728A - Electric vehicle's mileage integrated management system that traveles - Google Patents
Electric vehicle's mileage integrated management system that traveles Download PDFInfo
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- CN113442728A CN113442728A CN202110677191.5A CN202110677191A CN113442728A CN 113442728 A CN113442728 A CN 113442728A CN 202110677191 A CN202110677191 A CN 202110677191A CN 113442728 A CN113442728 A CN 113442728A
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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 invention discloses a system for comprehensively managing the driving mileage of an electric vehicle, which comprises: the GPS module is used for detecting the 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, is used for detecting the vehicle resistance value of the electric vehicle in the running process in real time and then sends the vehicle resistance value to the electronic control unit VCU; the BMS 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 out an insufficient-mileage alarm signal to the BMS when the safe and effective driving mileage value is less than the remaining mileage of the electric vehicle; and the BMS is also used for sending out an insufficient mileage alarm prompt instruction to a display module on the electric vehicle after receiving the insufficient mileage alarm signal. The invention can monitor the safe and effective driving mileage of the electric vehicle, and trigger alarm reminding when the safe and effective driving mileage of the vehicle does not reach the remaining mileage.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a driving mileage comprehensive management system of an electric vehicle.
Background
At present, as the size of a battery pack is getting larger, more and more people use electric vehicles such as new energy vehicles and electric sharing bicycles, and meanwhile, a lithium ion battery has the characteristics of being relatively expensive and incapable of being abused, and the lithium ion battery is intrinsically insecure, and a specialized battery management system BMS needs to be configured to integrate and manage the lithium battery, so that the best performance of the battery pack is exerted to the maximum extent, and the safety of a driver is protected.
In the process of using electric vehicles such as new energy vehicles and electric sharing bicycles, the actual driving range of the electric vehicle is not consistent with the estimated driving range displayed on the vehicle, for example, the estimated driving range displayed on the vehicle is 200 kilometers, but the electric vehicle can only actually drive 100 kilometers, so that more and more trailer accidents are caused, and meanwhile, the electric vehicle is suddenly powered off in the driving process, which is very dangerous and easily causes collision accidents.
In addition, as the service life of a single battery cell in a new energy automobile increases, the consistency of the single battery cell is increasingly poor, and the pressure difference is too large, so that the calculation of the SOC (state of charge, also called residual capacity) of the battery cell is inaccurate. In addition, the problems of uneven temperature distribution, overlarge temperature difference and the like exist, the new energy automobile can not reach the designed mileage directly, and the product use experience 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 operation information (for example, information such as a battery voltage, an operation current, and a remaining battery capacity) of the battery management system BMS in time.
However, there is no technology that can specifically solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a comprehensive management system for the driving mileage of an electric vehicle, aiming at the technical defects in the prior art.
To this end, the present invention provides a system for comprehensively managing a mileage 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, is used for detecting the vehicle resistance value in unit time of the electric vehicle in the driving process in real time, and then sends the vehicle resistance value to the electronic control unit VCU;
the battery management system BMS is connected with the GPS module through a signal line 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 pre-storing and setting the one-to-one corresponding relation among a plurality of different vehicle resistance values in unit time, a plurality of different actual driving mileage values of the electric vehicle in unit time and a plurality of different real-time power consumption of the vehicle in unit time; when the positioning information sent by the battery management system is not received, correspondingly reading the actual driving mileage value of the electric vehicle in a plurality of unit times and the real-time power consumption of the electric vehicle in a plurality of different unit times according to the vehicle resistance values of the electric vehicle in a plurality of unit times received in the driving process sent by the resistance sensor module in real time, respectively summing the actual driving mileage value of the electric vehicle in a plurality of unit times and the real-time power consumption of the electric vehicle in a plurality of different unit times to obtain the actual driving mileage value and the actual power consumption of the electric vehicle, and then sending the actual driving mileage value and the actual power consumption to the battery management system BMS; and acquiring and recording the remaining mileage of the electric vehicle according to the difference between the total planned mileage of the electric vehicle going out this time and the actual driving mileage, wherein the remaining mileage of the electric vehicle is the safe and effective driving mileage.
The electronic control unit VCU is also used for comparing the remaining mileage of the electric vehicle with the safe and effective driving mileage after reading the safe and effective driving mileage of the electric vehicle, and sending out an insufficient mileage alarm signal to the battery management system BMS if the safe and effective driving mileage is less than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is also used for sending out an insufficient mileage alarm prompt instruction to a display module on the electric vehicle in real time after receiving an insufficient mileage alarm signal sent by the electronic control unit VCU.
Preferably, the VCU is further configured to record an actual driving mileage of the electric vehicle in real time according to the positioning information of the electric vehicle sent by the BMS when receiving the positioning information sent by the battery management system, and obtain and record a remaining mileage of the electric vehicle according to a difference between a total planned mileage of the electric vehicle traveling this time and the actual driving mileage;
preferably, the display module on the electric vehicle is an instrument panel module on the electric vehicle.
Preferably, a mobile communication module is also included;
the mobile communication module is arranged at the top end of the electric vehicle, is connected with the battery management system BMS, and is used for receiving the preset battery state information of the electric vehicle sent by the battery management system BMS in real time and then sending the preset battery state information to the external lithium battery management platform;
correspondingly, the battery management system BMS is also used for sending the 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 battery voltage, operating current and remaining capacity.
Preferably, the mobile communication module is a 4G module, and is integrated with the GPS module.
Preferably, an alarm is further included;
the alarm is connected with the battery management system BMS through a signal wire and 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 insufficient mileage signal sent by the electronic control unit VCU.
Preferably, a voice player is also included;
the voice player is connected with the battery management system BMS through a signal line and is used for receiving and playing the preset battery state information of the electric vehicle sent by the battery management system BMS in real time after a motor of the electric vehicle is started 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 line and sending the 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 controls the motor to start and operate.
Preferably, the device further comprises 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 the preset battery state information of the electric vehicle sent by the battery management system BMS in real time and displaying the safe and effective mileage value of the electric vehicle sent by the battery management system BMS after the motor of the electric vehicle is started to run;
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, then 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 invention provides the comprehensive management system for the driving mileage of the electric vehicle, which has scientific design, can monitor the safe and effective driving mileage of the electric vehicle (such as a new energy vehicle or an electric sharing bicycle) installed in the system, and when the safe and effective driving mileage of the vehicle does not reach the remaining mileage (namely the pre-driving mileage and the mileage intended to continue driving) of the electric vehicle (for example, because of road condition deviation or sudden cooling, the power consumption of the unit driving mileage is obviously increased), the vehicle is triggered to send out alarm reminding to a driver, so that the accident of half-road cast of the electric vehicle caused by sudden power failure is effectively and reliably prevented, the driving safety of the vehicle is further improved, the property and personal safety of the driver and passengers are ensured, and the system is favorable for popularization and application, has great practical significance in production.
Drawings
Fig. 1 is a block diagram illustrating a structure of a system for comprehensively managing a driving range of an electric vehicle according to the present invention.
Detailed Description
In order to make the technical means for realizing the invention easier to understand, the following detailed description of the present application is made in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In addition, it should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the term "mounted" and the like should be interpreted broadly, and may be, for example, either fixedly mounted or detachably mounted.
The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
Referring to fig. 1, the present invention provides a system for comprehensively managing driving range of an electric vehicle, which is a comprehensive management system based on an advanced AI estimation method for mileage optimization of a GPS positioning system and a control strategy thereof, and is applied to an electric vehicle (for example, a new energy vehicle or an electric sharing bicycle driven by battery power), and the system specifically includes 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 a resistance detection module) is arranged at the head position of the electric vehicle, is used for detecting the vehicle resistance value in unit time in the driving process of the electric vehicle in real time and then sends the vehicle resistance value to the electronic control unit VCU;
the vehicle resistance value is the opposite of the vehicle power value (including but not limited to air resistance and brake resistance), and the corresponding relation between the mileage of the vehicle in unit time and the consumed electric quantity SOC can be clearly reflected by the vehicle resistance value in unit time through BMS large data storage record.
The battery management system BMS is connected with the GPS module through a signal line and 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 pre-storing and setting the one-to-one corresponding relation among a plurality of different vehicle resistance values in unit time, a plurality of different actual driving mileage values in unit time and a plurality of different real-time power consumption values in unit time of the electric vehicle, when the positioning information sent by the battery management system is not received (namely when the vehicle is in a place where a GPS positioning signal is weak or not available), the actual driving mileage values in unit time and the real-time power consumption values in unit time of the electric vehicle are correspondingly read according to the vehicle resistance values in unit time of the electric vehicle sent by the resistance sensor module in real time in driving process, the actual driving mileage values in unit time and the real-time power consumption values in unit time of the electric vehicle are respectively summed, acquiring the actual traveled mileage and the actual power consumption of the electric vehicle, and then sending the actual traveled mileage and the actual power consumption to a Battery Management System (BMS); and acquiring and recording the remaining mileage of the electric vehicle according to the difference between the total planned mileage of the electric vehicle going out this time and the actual driving mileage, wherein the remaining mileage of the electric vehicle is the safe and effective driving mileage.
It should be noted that, under the conventional condition that the GPS signal is stable, the safe and effective mileage can be calculated by directly acquiring the track (i.e. the difference between the total planned mileage and the actual mileage directly obtained by the GPS system to obtain the safe and effective mileage, wherein the actual mileage is obtained according to the positioning information), but the GPS signal is not always in a stable state, and the safe and effective mileage has a large error and always exists until the current electric quantity SOC is exhausted, and the situation of lying down the nest on the half road is often encountered. According to the invention, different vehicle resistance values are corresponding to the corresponding relation between the mileage of the vehicle running in unit time and the power consumption SOC through a big data processing mode (Kalman filtering and neural network fuzzy estimation), so that the actual running mileage of the vehicle can still be stably recorded under the condition that GPS signals are lost, thereby converting to obtain safe and effective running mileage and well avoiding the condition of half-road groveling.
In the invention, the electronic control unit VCU is further configured to record an 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 (i.e., when the positioning information sent by the battery management system is received), and acquire and record a remaining mileage of the electric vehicle according to a difference between a total planned mileage of the electric vehicle traveling this time and the actual driving mileage;
it should be noted that the total planned mileage of the electric vehicle during the trip, that is, the mileage value planned to be traveled between the departure location and the destination of the user, may be obtained through navigation software such as an existing GPS positioning system or an existing hundred-degree map. The electronic control unit VCU estimates, by means of the GPS positioning system, the mileage to be traveled by the electric vehicle from the current position to the destination (i.e., the pre-traveled mileage of the electric vehicle).
The electronic control unit VCU is also used for comparing the remaining mileage (namely the pre-driving mileage and the mileage intending to continue driving) of the electric vehicle with the safe and effective driving mileage after reading the safe and effective driving mileage of the electric vehicle, and sending out an insufficient mileage alarm signal to the battery management system BMS if the safe and effective driving mileage is less than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is further configured to send an insufficient-mileage warning prompt instruction to a display module (e.g., an instrument panel module) on the electric vehicle in real time after receiving the insufficient-mileage warning signal sent by the electronic control unit VCU, so as to remind a driver of paying attention to charging. Therefore, the accident of half-way anchoring can be effectively avoided.
In a specific implementation, the integrated management system provided by the present invention further includes:
the mobile communication module (such as a 4G module) is installed 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 capacity and the like) of the electric vehicle sent by the battery management system BMS in real time and then sending the preset battery state information to a lithium battery management platform (such as a lithium battery management server on the Internet) located outside;
correspondingly, the battery management system BMS is also configured to transmit preset battery state information (e.g., information of a battery voltage, an operating current, and a remaining capacity) of the electric vehicle to the mobile communication module (e.g., the 4G module) in real time.
In a specific implementation, the mobile communication module (such as a 4G module) is integrated with the GPS module. In concrete implementation, the battery management system BMS is connected with the 4G module through an RS485 signal line
It should be noted that, for an electric vehicle (such as a new energy vehicle or an electric sharing bicycle driven by Battery power), an important electric control system is a Battery Management System (BMS), which is simply referred to as BMS. The intelligent monitoring system is similar to the human brain, can monitor the working state of an automobile battery system comprising a plurality of battery units, and controls the starting, the stopping, the mileage prompting and the like of a motor in the electric vehicle by sending corresponding instructions.
In the invention, in particular to the realization, the comprehensive management system also comprises an alarm;
the alarm is connected with the battery management system BMS through a signal wire and 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, the alarm can specifically comprise a loudspeaker and a light emitting diode which record preset sound segments);
correspondingly, the battery management system BMS is also used for sending an alarm triggering signal to the alarm in real time after receiving the insufficient mileage signal sent by the electronic control unit VCU.
In the present invention, in a specific implementation, the integrated management system provided by the present invention further includes a voice player (e.g., a speaker);
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 capacity and the like) of the electric vehicle sent by the battery management system BMS in real time after a motor of the electric vehicle is started to run;
correspondingly, the battery management system BMS is configured to be connected to an original motor controller of the electric vehicle via a signal line, and is configured to send preset battery state information (e.g., battery voltage, operating current, remaining capacity, etc.) of the electric vehicle to the audio player in real time according to a motor start operation prompt signal sent from the motor controller after the motor controller controls the motor to start operation.
In the present invention, in a specific implementation, the integrated management system further includes a display screen (e.g., an LCD);
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 capacity and the like) of the electric vehicle sent by the battery management system BMS in real time after a motor of the electric vehicle is started to operate and displaying the safe and effective mileage value of the electric vehicle sent by the battery management system BMS;
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, then 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.
It should be noted that the safe and effective mileage value can be preset according to the needs of the user.
In the invention, in concrete implementation, the resistance sensor module is also used for detecting the corresponding relation between the real-time power consumption and the 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 detected by the resistance sensor module and the mileage.
It should be noted that, for the present invention, under the condition that the GPS signal is good, the electronic control unit VCU may largely record the corresponding relationship between the real-time power consumption of the electric vehicle and the mileage detected by different resistance values in unit time, where the real-time power consumption is the reduction amount of the SOC. When the GPS signal is good, the mileage is obtained through the corresponding relation between the mileage converted by the GPS and the SOC, and when the GPS signal is weak, the driving range value is obtained by corresponding different resistance values to the corresponding relation between the mileage driven by the vehicle in unit time and the SOC consumed by the electric quantity through a big data processing mode (for example, based on Kalman filtering and a neural network fuzzy estimation algorithm).
In concrete implementation, when the mobile communication module (such as a 4G module) and the GPS module are in a state of weak signals or lost signals, the battery management system BMS sends out a start advanced AI estimation algorithm and a control strategy thereof, and sends out a trigger record control signal to the electronic control unit VCU, so as to control the electronic control unit VCU to continuously record actual driving mileage and remaining mileage data of the electric vehicle, thereby achieving the purpose of safe and reliable operation.
It should be noted that, for the present invention, the advanced AI estimation algorithm is executed by the electronic control unit VCU, and the big data intelligent estimation algorithm may be configured to collect the corresponding relationship between the driving mileage and the SOC power consumption under different resistance values according to the existing big data analysis method (for example, based on kalman filter and neural network fuzzy estimation algorithm), establish a mathematical model, and analyze and perfect the model according to a large amount of data, and when the data amount is large enough, the estimation algorithm may completely replace the existing technology to obtain the actual driving mileage and the remaining mileage (i.e., the next safe and effective driving mileage that needs to be continuously driven) by means of GPS positioning.
For the present invention, the control strategy employed is: the strategy is that a big data intelligent estimation algorithm is added on the mileage calculated by the traditional GPS technology, and after errors occur in the traditional technology, an AI mode is switched in time, the precision is improved absolutely, the corresponding relation between the actual mileage which runs in unit time (the resistance value is defaulted to be unchanged in the time period) and the consumed SOC electric quantity is recorded in real time through a resistance detector module, a big data model is established, the relation is continuously recorded by a vehicle running system, the model is closer to the real situation along with the accumulation of data, when the deviation occurs in the traditional GPS technology, an electronic control unit VCU is switched to the AI mode immediately, and the condition of the mileage misreport of the current vehicle is greatly improved.
It should be noted that, when the GPS module and the 4G module are located at a place where the signal is weak, the BMS sends a mileage shift imminent signal to the electronic control unit VCU, and triggers the electronic control unit VCU to start the existing advanced AI estimation algorithm, so that the obtained actual driving mileage of the electric vehicle and the preset safe and effective driving mileage are very accurate.
That is, the invention can monitor the safe and effective driving mileage of the electric vehicle installed in the system in real time, and when the positioning signal is lost, the electronic control unit VCU is triggered to start the existing advanced AI estimation algorithm, thereby improving the safety and reliability of the vehicle driving.
It should be noted that, for the present invention, a GPS positioning technology and a resistance detection technology are adopted, a connected electronic control unit VCU starts to perform data conversion operation after receiving related data, and according to a preset corresponding relationship, a limit safe mileage range (i.e., a safe driving mileage) of the normal driving of the vehicle is intelligently calculated according to a vehicle resistance value received by the electric vehicle in the driving process, and if the remaining mileage (i.e., a pre-driving mileage and a mileage intended to continue driving) of the electric vehicle exceeds the limit safe mileage range, the battery management system BMS is triggered to automatically send out insufficient mileage processing, thereby achieving the purpose of safe traveling;
in the present invention, in a specific implementation, the resistance sensor module may be a common resistance sensor installed in an existing automobile, which is the prior art and is not described in detail.
It should be noted that, in particular, in implementation, the resistance sensor module may adopt a digital resistance sensor and a torque sensor manufactured by beijing haibo hua science ltd, and can well test a resistance value for measuring real-time torque, rotation speed and power values of a vehicle. The electronic control unit VCU can be used in a big data model through the arrangement and conversion of the collected data.
In the present invention, in a specific implementation, the 4G module and the GPS module may be common modules installed in an existing automobile, which is the prior art and will not be described again.
In a specific implementation of the present invention, the signal lines are a CAN (controller area network) bus and an RS485 bus.
In the present invention, the electronic control unit VCU may be a programmable logic controller PLC or a central processing unit CPU installed on the electric vehicle.
It should be noted that, with respect to the system for comprehensively managing the driving mileage of the electric vehicle provided by the present invention, the real-time consumed mileage (i.e., the actual driving mileage) and the remaining mileage of the driven electric vehicle CAN be accurately detected through the resistance detection module (i.e., the resistance sensor module) and the existing advanced AI estimation algorithm, and data communication is performed through the CAN bus and the electronic control unit VCU, so as to realize accurate mileage conversion, thereby realizing the function of automatic safe driving, and avoiding the half-road breakdown accident caused by sudden power failure of the vehicle.
In addition, the battery management system BMS can also realize other normal functions, including: the method comprises the following steps of total voltage detection, insulation detection, single voltage detection of the battery pack, active Or passive equalization of single battery cells, thermal management control, fault diagnosis and protection, current charging and discharging state, current magnitude, SOC, SOH (storage battery capacity), CAN communication and other functions.
In addition, in the concrete implementation, the product number and the corresponding test result of the battery management system BMS can be stored, the current driving mileage of the vehicle can be broadcasted in voice before starting every time, and convenience is brought to people going out.
It should be noted that, in terms of specific implementation, the safe driving mileage of the vehicle and the current resistance detection information are all fed back, the driving mileage is converted through the VCU, and the power is limited through the BMS, 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 resistance that opens BMS and be connected and surveys and the 4G module of vehicle, and then reads all information of vehicle battery package, then carries out voice broadcast and comes out, realizes safe trip.
The intelligent battery pack has the advantages of high function integration level, concise and reasonable design and good reliability and manufacturability, and can read the safe and effective mileage of a vehicle and all information of the battery pack and report the information to the display screen through the BMS, the matched 4G module and the resistance detection module, so that a client can know the states of all batteries, and the intelligent battery pack is convenient to go out reasonably and safely.
In conclusion, compared with the prior art, the invention provides a comprehensive management system for the driving mileage of an electric vehicle, the system has scientific 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 in the system, when the safe and effective driving range of the vehicle does not reach the remaining range (namely the pre-driving range and the range which is expected to continue driving) of the electric vehicle (for example, because of road condition deviation or sudden temperature reduction, the power consumption of the unit driving range is obviously increased), the vehicle is triggered to send an alarm prompt to a driver, the accident that the electric vehicle is half-way anchored due to sudden power failure is effectively and reliably prevented, the driving safety of the automobile is further improved, the property and personal safety of the driver and passengers are guaranteed, the popularization and the application are facilitated, and the production practice significance is great.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A system for comprehensively managing a mileage 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, is used for detecting the vehicle resistance value in unit time of the electric vehicle in the driving process in real time, and then sends the vehicle resistance value to the electronic control unit VCU;
the battery management system BMS is connected with the GPS module through a signal line 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 pre-storing and setting the one-to-one corresponding relation among a plurality of different vehicle resistance values in unit time, a plurality of different actual driving mileage values of the electric vehicle in unit time and a plurality of different real-time power consumption of the vehicle in unit time; when the positioning information sent by the battery management system is not received, correspondingly reading the actual driving mileage value of the electric vehicle in a plurality of unit times and the real-time power consumption of the electric vehicle in a plurality of different unit times according to the vehicle resistance values of the electric vehicle in a plurality of unit times received in the driving process sent by the resistance sensor module in real time, respectively summing the actual driving mileage value of the electric vehicle in a plurality of unit times and the real-time power consumption of the electric vehicle in a plurality of different unit times to obtain the actual driving mileage value and the actual power consumption of the electric vehicle, and then sending the actual driving mileage value and the actual power consumption to the battery management system BMS; and acquiring and recording the remaining mileage of the electric vehicle according to the difference between the total planned mileage of the electric vehicle going out this time and the actual driving mileage, wherein the remaining mileage of the electric vehicle is the safe and effective driving mileage.
The electronic control unit VCU is also used for comparing the remaining mileage of the electric vehicle with the safe and effective driving mileage after reading the safe and effective driving mileage of the electric vehicle, and sending out an insufficient mileage alarm signal to the battery management system BMS if the safe and effective driving mileage is less than the remaining mileage of the electric vehicle;
correspondingly, the battery management system BMS is also used for sending out an insufficient mileage alarm prompt instruction to a display module on the electric vehicle in real time after receiving an insufficient mileage alarm signal sent by the electronic control unit VCU.
2. The system for comprehensively managing traveled mileage of an electric vehicle according to claim 1, wherein the electronic control unit VCU is further configured to, when receiving the positioning information sent from the battery management system, record the actual traveled mileage of the electric vehicle in real time according to the positioning information of the electric vehicle sent from the battery management system BMS, and obtain and record the remaining mileage of the electric vehicle according to a difference between a total planned mileage of the electric vehicle on the trip and the actual traveled mileage.
3. The system for comprehensively managing the mileage of an electric vehicle as set forth in claim 1, wherein the display module on the electric vehicle is an instrument panel module on the electric vehicle.
4. The system for comprehensively managing the mileage of an electric vehicle as set forth in claim 1, further comprising a mobile communication module;
the mobile communication module is arranged at the top end of the electric vehicle, is connected with the battery management system BMS, and is used for receiving the preset battery state information of the electric vehicle sent by the battery management system BMS in real time and then sending the preset battery state information to the external lithium battery management platform;
correspondingly, the battery management system BMS is also used for sending the 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 battery voltage, operating current and remaining capacity.
5. The system for comprehensively managing the mileage of an electric vehicle as set forth in claim 4, wherein the mobile communication module is a 4G module integrated with the GPS module.
6. The system for comprehensively managing the mileage of an electric vehicle according to any one of claims 1 to 5, further comprising an alarm;
the alarm is connected with the battery management system BMS through a signal wire and 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 insufficient mileage signal sent by the electronic control unit VCU.
7. The system for comprehensively managing the mileage of an electric vehicle according to any one of claims 1 to 5, further comprising a voice player;
the voice player is connected with the battery management system BMS through a signal line and is used for receiving and playing the preset battery state information of the electric vehicle sent by the battery management system BMS in real time after a motor of the electric vehicle is started 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 line and sending the 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 controls the motor to start and operate.
8. The system for comprehensively managing the mileage of an electric vehicle as set forth in any one of claims 1 to 5, 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 the preset battery state information of the electric vehicle sent by the battery management system BMS in real time and displaying the safe and effective mileage value of the electric vehicle sent by the battery management system BMS after the motor of the electric vehicle is started to run;
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, then 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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