CN111231678A - Electric automobile terminal - Google Patents
Electric automobile terminal Download PDFInfo
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- CN111231678A CN111231678A CN202010178183.1A CN202010178183A CN111231678A CN 111231678 A CN111231678 A CN 111231678A CN 202010178183 A CN202010178183 A CN 202010178183A CN 111231678 A CN111231678 A CN 111231678A
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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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- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/425—Temperature
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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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
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention provides an electric automobile terminal, wherein an electric automobile comprehensive control system comprises a cloud server, an electric automobile terminal and a client terminal, wherein the electric automobile terminal and the client terminal are in communication connection with the cloud server; the electric automobile terminal is internally provided with a state monitoring module for monitoring the internal state of the electric automobile terminal and a communication module for communicating with the cloud server, the communication module sends monitored state data to the cloud server at preset intervals, so that the cloud server generates a notification according to the state data and pushes the notification to the client terminal. According to the invention, various control data can be collected on the electric automobile terminal, so that a user can know the state of the electric automobile in time, and the user experience is improved.
Description
Technical Field
The invention relates to the field of electric automobile management, in particular to an electric automobile terminal.
Background
The electric vehicle (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, and meets various requirements of road traffic and safety regulations. Because the influence on the environment is smaller than that of the traditional automobile, the prospect is widely seen. The working principle can be summarized as follows: the battery, the current, the power regulator, the motor, the power transmission system drive the automobile to run (Road).
At present, electric vehicles (BEVs) have been increasingly popularized, but the comprehensive management and control of BEVs have major problems, such as when to remind a user to charge, where the user charges, how to charge, when to repair the electric vehicle, and proper maintenance, which all seriously affect the experience of the user in using the electric vehicle.
The user is not the professional in the aspect of the electric automobile, so it is difficult to judge how to maintain the electric automobile in time according to the performance of the electric automobile, and if the electric automobile is charged in time, the trip of the user is influenced, so that a set of electric automobile comprehensive management and control system is designed, and the management service of the electric automobile for the user is particularly necessary.
Disclosure of Invention
In order to solve the technical problem, the invention provides an electric vehicle terminal.
The invention is realized by the following technical scheme:
the electric automobile comprehensive management and control system comprises a cloud server, an electric automobile terminal and a client terminal, wherein the electric automobile terminal and the client terminal are in communication connection with the cloud server; the electric automobile terminal is internally provided with a state monitoring module for monitoring the internal state of the electric automobile terminal and a communication module for communicating with the cloud server, the communication module sends monitored state data to the cloud server at preset intervals, so that the cloud server generates a notification according to the state data and pushes the notification to the client terminal.
Further, the monitoring objects of the state monitoring module comprise a discharge depth, a battery cycle life coefficient, a charging and discharging frequency, a battery capacity, a motor temperature, an average fault interval mileage, a maximum vehicle speed, a driving mileage, a battery cell voltage, a battery unit total voltage, a current and a temperature.
Furthermore, the electric automobile terminal also comprises a driving module and an electric quantity control module, wherein the driving module is in communication connection with the electric quantity control module; the driving module comprises a motion controller and a power converter connected with the motion controller.
Further, the electric quantity control module comprises a battery unit and an energy management unit communicated with the battery unit, and further comprises a charger communicated with the battery unit in a charging state.
Further, still include electric energy state monitoring unit among the electric quantity control module, electric energy state monitoring unit and state monitoring module communication connection so that to the cloud ware transmission state data to with motion controller communication connection so that when the battery unit state is not good enough, coordinate the corresponding adjustment control parameter of motion controller.
Furthermore, the electric energy state monitoring unit utilizes the characteristic that the resistance value of the thermistor of the temperature sensor changes along with the temperature change to design the voltage dividing circuit so that the output voltage signal of the voltage dividing circuit is in direct proportion to the temperature, and the temperature of the battery unit is calculated by acquiring the voltage of the voltage dividing circuit; and a voltage-temperature conversion table is stored in the electric energy state monitoring unit, temperature data is directly obtained in a table look-up mode and is sent to the state monitoring module.
The invention has the beneficial effects that:
the electric automobile comprehensive control system provided by the invention has the following beneficial effects:
(1) the method provides comprehensive control over various parameters of the electric automobile terminal, so that the cloud server can comprehensively know various parameters of the electric automobile terminal in real time, judge the real-time state of the electric automobile through a preset algorithm and inform a user how to process the electric automobile in a notification mode, and therefore user experience is improved;
(2) further, a specific algorithm for judging the electric quantity state, the battery state and the motor state of the electric vehicle based on the electric vehicle terminal parameters is provided, so that the accuracy of the system for judging the current electric vehicle state is improved, and the false alarm is avoided;
(3) for the most frequently occurring charging prompt, the requirement of saving economic cost of a user is considered, a generation method of a charging notification is further provided, the generation method of the notification information can be combined with the current actual situation of the user, the notification is timely pushed to the user, the user can timely master the most accurate charging information, the electric automobile is charged, and therefore the power supply of the electric automobile is protected. Furthermore, in the process of generating the notification, the intelligent charging and the geographic position of the charging station are taken into consideration, so that the intelligent degree of the system is improved, the user experience is also improved, and the balance of saving the cost of the user and protecting the battery is obtained.
Drawings
FIG. 1 is a schematic view of an electric vehicle comprehensive management and control system provided by an embodiment of the invention;
FIG. 2 is a block diagram of an electric vehicle terminal provided by an embodiment of the invention;
FIG. 3 is a flowchart of an evaluation value acquisition algorithm provided by an embodiment of the present invention;
fig. 4 is a flowchart of a charging notification generation method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention provides an electric vehicle comprehensive control system, which comprises a cloud server, an electric vehicle terminal and a client terminal, wherein the electric vehicle terminal and the client terminal are in communication connection with the cloud server, as shown in fig. 1.
The client terminal can be a mobile device or a fixed device, the mobile device can be a mobile phone, a tablet computer, a notebook computer or a PDA, and the fixed device can be a desktop computer.
The electric automobile terminal is as shown in fig. 2, and is internally provided with a state monitoring module for monitoring the internal state of the electric automobile terminal and a communication module for communicating with the cloud server, wherein the communication module sends monitored state data to the cloud server at preset intervals, so that the cloud server generates a notification according to the state data and pushes the notification to the client terminal.
Specifically, the monitoring objects of the state monitoring module comprise a discharge depth, a battery cycle life coefficient, charging and discharging times, battery capacity, motor temperature, average fault interval mileage, maximum vehicle speed, driving mileage, battery cell voltage, total battery cell voltage, current and temperature.
The electric automobile terminal further comprises a driving module and an electric quantity control module, and the driving module is in communication connection with the electric quantity control module.
The driving module comprises a motion controller used for sensing a pedal signal and a power converter connected with the motion controller, and the motion controller is used for sending corresponding control commands to control the power converter according to signals input from a brake pedal and an accelerator pedal so as to regulate the energy flow between the motor and the electric quantity control module. It is apparent that the power converter is thus in communication with both the electric motor and the charge control module. Specifically, the power converter communicates with a battery cell in the power control module. Further, the motor drives a mechanical transmission device, and the movement of the electric vehicle is realized through wheels connected with the mechanical transmission device.
The electric quantity control module comprises a battery unit and an energy management unit communicated with the battery unit, and further comprises a charger communicated with the battery unit in a charging state.
Specifically, in the embodiment of the invention, when the electric vehicle brakes, the kinetic energy of regenerative braking is absorbed by the battery unit to improve the energy utilization rate, and the direction of power flow is reversed. The power control module and the motion controller coordinate to efficiently control energy transfer between the battery unit and the power converter.
In a possible implementation manner, the power control module further includes a power state monitoring unit, and the power state monitoring unit is in communication connection with the state monitoring module so as to transmit the state data to the cloud server, and is in communication connection with the motion controller so as to coordinate the motion controller to correspondingly adjust the control parameters when the state of the battery unit is not good enough, so that the output current and power of the battery unit are reduced, and the battery unit is prevented from being damaged. Specifically, the monitoring objects of the electric energy state monitoring unit comprise the cell voltage, the total voltage, the current and the temperature of the battery unit.
Further, in order to acquire temperature data of the battery unit, the electric energy state monitoring unit designs the voltage dividing circuit so that an output voltage signal of the voltage dividing circuit is in direct proportion to the temperature by using the characteristic that the resistance value of the thermistor of the temperature sensor changes along with the temperature change, and calculates the temperature of the battery unit by acquiring the voltage of the voltage dividing circuit. And a voltage-temperature conversion table is stored in the electric energy state monitoring unit, temperature data is directly obtained in a table look-up mode and is sent to the state monitoring module. In a possible embodiment, the voltage divider circuit may be connected in series with a preset comparison circuit, and the cooling fan of the battery unit may be controlled according to the comparison result, so as to achieve the purpose of additional feedback cooling.
The cloud server may specifically be a server cluster, where the server cluster includes a data server and a management and control server, and the data server is in communication connection with the management and control server.
The data server is used for storing state data generated by the electric automobile terminal and user data generated by the client terminal. The management and control server is used for generating a notification according to the state data, pushing the notification to a corresponding client terminal, and responding to a request of the client terminal to provide corresponding service for the client terminal.
Specifically, the data server is used for maintaining a client terminal registration table, an electric vehicle terminal state monitoring table and an electric vehicle terminal event record table. The client terminal registration table takes a client terminal ID as a main key and records client basic information and an electric automobile terminal ID corresponding to the client terminal. The electric vehicle terminal state monitoring table takes an electric vehicle terminal ID as a main key and records a battery pack service life evaluation value, an electric vehicle parameter evaluation value and a battery current state evaluation value. The electric vehicle terminal state monitoring table is further attached with three sub-tables, and the three sub-tables and the electric vehicle terminal state monitoring table are provided with the same main keys. The three sub-tables are a battery pack service life parameter record table, an electric vehicle parameter record table and a battery present state parameter record table respectively.
The battery pack life parameter recording table records four fields of discharge depth, battery cycle life coefficient, charge and discharge times and battery capacity. And the management and control server calculates a battery pack service life parameter evaluation value according to four fields of the discharge depth, the battery cycle life coefficient, the charge and discharge times and the battery capacity by using a preset battery pack service life evaluation algorithm at preset time intervals, and updates the newly acquired battery pack service life parameter evaluation value in an electric vehicle terminal state monitoring table.
Specifically, the battery cycle life coefficient is obtained by calculating the charge and discharge times and the charge and discharge depth, and can be obtained by using a formula
Where t (Hi) is the maximum number of cycles at the time when the charge-discharge depth is Hi, and N is an empirical constant.
The electric vehicle parameter recording meter records four fields of motor temperature, average fault interval mileage, maximum vehicle speed and driving mileage. And the control server calculates an electric vehicle parameter evaluation value according to the motor temperature, the average fault interval mileage, the highest speed and the driving mileage by using a preset electric vehicle parameter evaluation algorithm at intervals of preset time, and updates the newly acquired electric vehicle parameter evaluation value in an electric vehicle terminal state monitoring table.
In the battery present state parameter recording table, four fields of battery monomer voltage, total battery unit voltage, current and temperature are recorded. And the management and control server calculates the evaluation value of the current state parameter of the battery according to the voltage of the single battery, the total voltage of the battery unit, the current and the temperature by using a preset current state parameter algorithm at preset intervals, and updates the newly acquired evaluation value of the current state parameter of the battery in a terminal state monitoring table of the electric automobile.
In the embodiment of the invention, the content for updating the automobile terminal state monitoring table according to the preset battery pack service life evaluation algorithm, the preset electric automobile parameter evaluation algorithm and the preset battery present state parameter algorithm is provided. Obviously, the method aims to generate the notice by updating the automobile terminal state monitoring table in real time and push the notice to the client terminal so as to achieve the purpose that the client can take better measures to protect the electric automobile in time. The battery pack life evaluation value, the electric vehicle parameter evaluation value and the battery current state evaluation value are respectively used for prompting the battery life (whether the battery needs to be replaced), the electric vehicle state (whether maintenance, maintenance or hardware such as a motor needs to be maintained or replaced) and the battery state (whether charging is needed or not and how charging is needed) of a user.
In the embodiment of the present invention, in order to obtain a more reliable battery pack life evaluation value, an electric vehicle parameter evaluation value, and a battery present state evaluation value, a evaluation value obtaining algorithm is provided, as shown in fig. 3, including:
s1, standardizing each data, and calculating the weight of each data by using a preset entropy weight method.
Specifically, the preset battery pack life assessment algorithm, the preset electric vehicle parameter assessment algorithm, and the preset battery present state parameter algorithm may all refer to and use the assessment value acquisition algorithm, only the data in step S1 is adaptively adjusted, and of course, the preset entropy weight methods may be the same or different.
For example, if the battery life is evaluated, the data in S1 is the depth of discharge, the battery cycle life coefficient, the number of charge and discharge, and the battery capacity. If the electric vehicle parameters are evaluated, the data in the S1 are the motor temperature, the average fault interval mileage, the highest speed and the driving mileage. If the present state of the battery is evaluated, the data in S1 are the cell voltage, the total cell voltage, the current and the temperature.
S2, horizontally drawing a unit length line segment L0 from left to right, and drawing a unit circle by taking the left end point of the line segment L0 as the center of a circle.
And S3, converting the weight of each data index into an angle value, sequentially rotating the angle value in a counterclockwise order by taking the left end point of the line segment L0 as the center of a circle, and drawing a line segment Li with unit length after each rotation, thereby dividing the unit circle into a plurality of sectors.
The specific angle value corresponding to a certain data index is
Where Ai is a weight value of a specific data index, and Σ Aj is a sum of all data indexes.
And S4, taking the circle center as a starting point, making an angular bisector Ti of each sector, and taking each index weight as the length of the angular bisector.
S5, sequentially connecting peripheral points, far away from the center of a circle, of Li and Ti to obtain a closed polygon, calculating the total area S and the perimeter C of the closed polygon, and connecting the total area S and the perimeter C
As an evaluation value.
And when the service life evaluation value of the battery pack is smaller than a preset first evaluation threshold value, the management and control server generates a battery alarm notification and sends the notification to a corresponding client terminal to prompt a user that the battery needs to be replaced.
And when the evaluation value of the electric vehicle parameter is smaller than a preset second evaluation threshold value, the management and control server generates an electric vehicle state alarm notification and sends the electric vehicle state alarm notification to a corresponding client. In the electric vehicle state alarm notification, the specific data of the motor temperature, the mean fault interval mileage, the maximum vehicle speed and the driving mileage and the abnormal data are labeled, so that the client terminal can particularly display (highlight or other) the abnormal data when displaying the specific data of the motor temperature, the mean fault interval mileage, the maximum vehicle speed and the driving mileage, and a user can conveniently select a reasonable processing method according to the abnormal data.
When the battery state is smaller than a third evaluation threshold, the management and control server generates a charging notification, and specifically, for facilitating charging by a user, the charging notification further includes recommended charging station information.
Specifically, the data server further records a charging station data record table, where the charging station data record table records a charging station ID, a charging station name, a charging station geographic location, and a charging condition and a charging level of the charging station. The higher the charge level is, the higher the charging cost is, the lower the first-level charging station cost, the medium the second-level charging station cost, and the higher the third-level charging station cost.
The electric vehicle terminal can also send geographical position data of the electric vehicle terminal to the cloud server in real time.
In a case where the battery state is smaller than the third evaluation threshold, an embodiment of the present invention provides a charging notification generation method, as shown in fig. 4, including:
q1. calculating the state of charge estimated value of the electric vehicle.
Specifically, the embodiment of the present invention provides a more accurate estimation formula
The method comprises the following steps that Soc is an estimated value of the state of charge of the electric automobile, Qb is the electric quantity discharged by a battery under a nominal current, Cb is the capacity of the battery under the nominal current discharge, I is the actual current which is continuously stable at the present time and a later time, Kw is a temperature influence factor, η is a first constant, gamma is a second constant, and the first constant and the second constant are obtained through experiments and recorded in a data server.
And Q2, judging whether the estimated value of the state of charge of the electric automobile is smaller than a preset strong warning threshold Sh, and if so, generating a first notice to a customer.
Under the condition that the estimated value of the state of charge of the electric vehicle is smaller than the preset strong warning threshold Sh, the electric vehicle must be charged no matter how the charging condition of the charging stations is, therefore, the management and control server inquires the nearest N charging stations nearby according to the current position of the electric vehicle, generates a first notice together with the inquired charging station information and the prompt information, and pushes the first notice to the client terminal. The prompt message may be that "the estimated value of the state of charge of the electric vehicle is smaller than the strong warning threshold, and the customer is asked to charge immediately".
Q3., if not, judging whether the electric vehicle state of charge estimation value is smaller than a preset moderate warning threshold value Sm, and if so, generating a second notice to the client.
In the case where the electric vehicle state of charge estimated value is smaller than the preset moderate warning threshold Sm but larger than the preset strong warning threshold Sh, it is not necessary to charge immediately, and a notification may be sent to the user with reference to the present specific situation.
For example, the charging price acceptable by the user is acquired, whether the charging price is lower than the charge of the third-level charging station is judged, if yes, the search management and control server inquires the nearest charging stations with the first-level or second-level charging levels near the current electric vehicle position, and generates a second notification together with the inquired charging station information and the prompt information. The prompt message may be "the electric vehicle state of charge estimate is less than the moderate warning threshold, suggesting customer charging". If not, no notification information is generated.
And Q4, if not, judging whether the estimated value of the state of charge of the electric vehicle is smaller than a preset low warning threshold Sl, and if so, generating a third notification to a client.
In the case where the electric vehicle state of charge estimation value is smaller than the preset low warning threshold Sm but larger than the preset medium warning threshold Sm, it is not necessary to charge immediately, and a notification may be sent to the user with reference to the current concrete situation.
For example, the charging price acceptable by the user is acquired, whether the charging price is lower than the charge of the secondary charging station is judged, if yes, the search management and control server inquires the nearest charging stations with the primary charging level of N nearby according to the current position of the electric vehicle, and generates a third notification together with the inquired charging station information and the prompt information. The prompt message may be "the estimated value of the state of charge of the electric vehicle is less than a low warning threshold, suggesting that the customer is charged". If not, no notification information is generated.
The generation method of the notification information can timely push the notification to the user according to the current actual situation of the user, so that the user can timely master the most accurate charging information to charge the electric automobile, and the power supply of the electric automobile is protected. Furthermore, in the process of generating the notification, the intelligent charging and the geographic position of the charging station are taken into consideration, so that the intelligent degree of the system is improved, the user experience is also improved, and the balance of saving the cost of the user and protecting the battery is obtained.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that although embodiments described herein include some features included in other embodiments, not other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
The present invention may also be embodied as apparatus or system programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps or the like not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering and these words may be interpreted as names.
Claims (2)
1. The electric automobile terminal is characterized in that the electric automobile comprehensive control system comprises a cloud server, an electric automobile terminal and a client terminal, wherein the electric automobile terminal and the client terminal are both in communication connection with the cloud server; the electric automobile terminal is internally provided with a state monitoring module for monitoring the internal state of the electric automobile terminal and a communication module for being in communication connection with the cloud server, and the communication module sends monitored state data to the cloud server at intervals of preset time, so that the cloud server generates a notification according to the state data and pushes the notification to the client terminal;
the cloud server comprises a data server, and the data server is used for recording a battery pack service life evaluation value, an electric vehicle parameter evaluation value and a battery current situation evaluation value; the battery pack service life evaluation value, the electric vehicle parameter evaluation value and the battery current state evaluation value are obtained by using a preset evaluation value acquisition algorithm; the evaluation value obtaining algorithm comprises the following steps:
standardizing each data, and calculating the weight of each data by using a preset entropy weight method;
drawing a unit length line segment L0 horizontally from left to right, and drawing a unit circle by taking the left end point of the line segment L0 as the center of a circle;
converting the weight of each data index into an angle value, sequentially rotating the angle value in a counterclockwise order by taking the left end point of the line segment L0 as the center of a circle, and drawing a line segment Li with unit length after each rotation so as to divide a unit circle into a plurality of sectors;
taking the circle center as a starting point, making an angular bisector Ti of each sector, and taking each index weight as the length of the angular bisector;
sequentially connecting peripheral points far away from the center of the circle of Li and Ti to obtain a closed polygon, calculating the total area S and the perimeter C of the closed polygon, and calculating the total area S and the perimeter C of the closed polygon
As evaluation values;
the electric automobile terminal also comprises a driving module and an electric quantity control module, wherein the driving module is in communication connection with the electric quantity control module; the driving module comprises a motion controller and a power converter connected with the motion controller;
the electric quantity control module comprises a battery unit, an energy management unit communicated with the battery unit and a charger communicated with the battery unit in a charging state;
the power control module also comprises an electric energy state monitoring unit which is in communication connection with the state monitoring module so as to transmit state data to the cloud server and is in communication connection with the motion controller so as to coordinate the motion controller to correspondingly adjust control parameters when the state of the battery unit is poor;
the electric energy state monitoring unit utilizes the characteristic that the resistance value of the thermistor of the temperature sensor changes along with the temperature change to design a voltage division circuit so that the output voltage signal of the voltage division circuit is in direct proportion to the temperature, and the temperature of the battery unit is calculated by acquiring the voltage of the voltage division circuit; and a voltage-temperature conversion table is stored in the electric energy state monitoring unit, temperature data is directly obtained in a table look-up mode and is sent to the state monitoring module.
2. The electric vehicle terminal according to claim 1, wherein:
the monitoring objects of the state monitoring module comprise discharge depth, battery cycle life coefficient, charging and discharging times, battery capacity, motor temperature, average fault interval mileage, maximum vehicle speed, driving mileage, battery single voltage, total battery unit voltage, current and temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178183.1A CN111231678A (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810160045.3A CN108382208B (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal for electric automobile comprehensive management and control system |
| CN202010178183.1A CN111231678A (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810160045.3A Division CN108382208B (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal for electric automobile comprehensive management and control system |
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| CN111231678A true CN111231678A (en) | 2020-06-05 |
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|---|---|---|---|
| CN202010178183.1A Withdrawn CN111231678A (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal |
| CN201810160045.3A Active CN108382208B (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal for electric automobile comprehensive management and control system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810160045.3A Active CN108382208B (en) | 2018-02-26 | 2018-02-26 | Electric automobile terminal for electric automobile comprehensive management and control system |
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| CN108382208B (en) | 2020-05-15 |
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