Range extender starting method, system and device based on navigation mode

Abstract

The invention relates to a range extender starting method, system and device based on a navigation mode, and the method comprises the steps: obtaining an expected electric quantity parameter, sent by an intelligent cabin, of a vehicle in a current target working condition road section, the remote service platform divides the whole driving road section of the vehicle into a plurality of working condition road sections based on real-time navigation information periodically sent by the intelligent cockpit, and electric quantity parameters required by each working condition road section are influenced by other working condition road sections; determining real-time vehicle electric quantity parameters of the vehicle in the target working condition road section; determining a starting parameter of a range extender according to the expected electric quantity parameter and the electric quantity parameter of the vehicle; and controlling the range extender to start under the condition that the starting parameter is detected to meet the navigation range extending starting condition. The service life of the range extender can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, system and device for starting a range extender based on a navigation mode. Background Art

[0002] In existing extended-range electric vehicles, a fixed SOC (State of Charge) or low discharge power is usually used as a condition for starting the range extender. However, both methods have certain problems.

[0003] If the range extender is started with a fixed SOC, the SOC will gradually decrease as the vehicle travels. When the SOC drops to a certain value, the vehicle may not be able to complete the rest of the journey normally, causing the range extender to start. This method lacks flexibility and cannot dynamically adjust the start timing according to actual driving conditions and needs. In urban traffic, frequent starts and stops will cause the range extender to start frequently, increasing mechanical wear and energy waste.

[0004] If the range extender is started at low discharge power, when the battery discharge power is lower than a preset low value, the range extender will start, which will cause poor NVH (Noise-Vibration-Harshness) performance. When driving at low speed or light load, the range extender may start frequently, and when driving at high speed or heavy load, the range extender may not start in time, resulting in excessive discharge of the battery.

[0005] Therefore, when the existing extended-range electric vehicles use a fixed SOC or low discharge power to start the range extender, the range extender will be frequently started and stopped, shortening the service life of the range extender. Summary of the invention

[0006] The present application provides a range extender starting method, system and device based on a navigation mode to solve the problem of short service life of the range extender.

[0007] In a first aspect, the present application provides a method for starting a range extender based on a navigation mode, the method comprising:

[0008] Obtaining the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections;

[0009] Determining a real-time vehicle power parameter of the vehicle in the target operating condition section;

[0010] Determining a start parameter of the range extender according to the expected power parameter and the vehicle power parameter;

[0011] When it is detected that the start-up parameter satisfies the navigation range-extending start-up condition, the range extender is controlled to start.

[0012] Optionally, detecting that the startup parameter satisfies the navigation extended-range startup condition includes:

[0013] Detecting the difference between the required power generation and the generated power of the vehicle;

[0014] In the case where the power difference is greater than a set power threshold, if the real-time battery status or driving speed of the vehicle meets set conditions, it is determined that the start parameter meets the navigation extended-range start condition.

[0015] Optionally, detecting that the startup parameter satisfies the navigation extended-range startup condition includes:

[0016] If the vehicle satisfies condition C and satisfies at least one of condition A and condition B, it is determined that the start parameter satisfies the navigation extended range start condition;

[0017] Among them, condition A: the first required power generation - GCU power generation > the first power threshold;

[0018] Condition B: Current SOC < expected SOC;

[0019] Condition C: The current vehicle speed ≥ the maximum starting speed under the original extended-range power generation strategy.

[0020] Optionally, the expected power parameters include expected SOC and expected power consumption, the vehicle power parameters include current SOC, efficiency of battery to drive system and preset battery capacity, the startup parameters include first required power generation, and the expected power consumption is the power required to be consumed by the vehicle in the target operating condition section calculated by the cloud;

[0021] Determining the first required power generation according to the expected power parameter and the vehicle power parameter includes:

[0022] calculating an SOC difference between the current SOC and the desired SOC;

[0023] Determine the predicted power consumption according to the SOC difference, the efficiency of the battery to the drive system, and the battery capacity, wherein the predicted power consumption is used to indicate the power that can be consumed by the vehicle in the target operating condition section determined according to the real-time state of the vehicle;

[0024] According to the difference between the predicted power consumption and the expected power consumption, a first required power generation of the vehicle in the target operating condition section is calculated.

[0025] Optionally, calculating the first required power generation of the vehicle in the target operating condition section according to the difference between the predicted power consumption and the expected power consumption includes:

[0026] Acquire real-time navigation information sent by the smart cockpit, and determine the driving time and mileage of the vehicle in the target working condition section according to the real-time navigation information;

[0027] If the traveled mileage reaches a preset mileage node and the traveled time meets a preset time condition, a node coefficient is determined, wherein the node coefficient is used to indicate the number of mileage segments in the target operating condition section;

[0028] Determine an energy consumption coefficient according to the node coefficient, the expected power consumption and the actual power consumption, wherein the energy consumption coefficient is used to correct the expected power consumption;

[0029] Determining the final required energy consumption according to the quotient of the expected power consumption and the energy consumption coefficient;

[0030] The first required power generation of the vehicle in the target operating condition section is calculated according to the difference between the predicted power consumption and the final required energy consumption.

[0031] Optionally, after controlling the range extender to start, the method further includes:

[0032] If the target operating condition section includes a climbing section, determining the climbing power requirement of the vehicle when climbing the slope;

[0033] If the vehicle turns on an accessory in the target operating condition section, determining the accessory power requirement of the accessory, wherein the accessory refers to an auxiliary device other than the main power system in the vehicle;

[0034] Add the accessory power requirement and the ramp-climbing power requirement to the first power requirement to obtain a second power requirement;

[0035] Determining a power coefficient corresponding to the SOC range according to the SOC range in which the SOC difference value is located;

[0036] The extended-range power generation power is determined according to the second required power generation, the remaining driving time of the vehicle in the target operating condition section, and the power coefficient, so that the range extender operates with the extended-range power generation power.

[0037] Optionally, after the range extender operates with the extended-range power generation power, the method further includes:

[0038] If the vehicle satisfies condition D and condition E, or condition F, it is determined that the range extender satisfies the navigation range extender shutdown condition, and the range extender is controlled to shut down;

[0039] Among them, condition D: the first required power generation - the GCU power generation < the second power threshold;

[0040] Condition E: Current SOC> expected SOC+SOC offset value;

[0041] Condition F: The current vehicle speed is less than the maximum starting speed under the original extended-range power generation strategy.

[0042] Optionally, after determining the extended-range power generation power, the method further includes:

[0043] If the current SOC does not meet the set SOC range during vehicle driving, the power conservation strategy is forced to start, wherein the power conservation strategy is to force the start of the range extender, exit the navigation range extension power generation strategy and adopt the original range extension power generation strategy;

[0044] Among them, the current SOC does not meet the set SOC range including:

[0045] The SOC difference between the first expected SOC and the current SOC is greater than a set SOC threshold, wherein the expected SOC is the SOC value set by the user after the vehicle arrives at the destination; or,

[0046] The current SOC is less than a second expected SOC, wherein the second expected SOC is a minimum SOC value for forcibly starting a power conservation strategy.

[0047] In a second aspect, the present application provides a range extender start system based on a navigation mode, the system comprising a smart cockpit, a vehicle control unit and a remote service platform;

[0048] The smart cockpit is used to periodically send real-time navigation information of the vehicle;

[0049] The remote service platform is used to divide the entire driving section of the vehicle into a plurality of working condition sections according to the real-time navigation information, wherein the power parameters required for each working condition section are affected by other working condition sections, and determine the expected power parameters of the vehicle in the target working condition section currently located;

[0050] The smart cockpit is further used to forward the expected power parameter to the vehicle control unit;

[0051] The vehicle control unit is used to determine the real-time vehicle power parameters of the vehicle in the target operating condition section, and determine the start-up parameters of the range extender according to the expected power parameters and the vehicle power parameters, and control the start-up of the range extender when it is detected that the start-up parameters meet the navigation range extender start-up conditions.

[0052] In a third aspect, the present application provides a range extender starting device based on a navigation mode, the device comprising:

[0053] An acquisition module is used to acquire the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections;

[0054] A first determination module is used to determine a real-time vehicle power parameter of the vehicle in the target operating condition section;

[0055] A second determination module, configured to determine a start-up parameter of the range extender according to the expected power parameter and the vehicle power parameter;

[0056] The starting module is used to control the start of the range extender when it is detected that the starting parameter meets the navigation range extender start condition.

[0057] In a fourth aspect, the present application provides an electronic device comprising: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus.

[0058] In a fifth aspect, the present application further provides a computer storage medium storing computer executable instructions, wherein the computer executable instructions are used to execute the range extender startup method based on the navigation mode as described in any one of the above items of the present application.

[0059] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the remote service platform dynamically divides the vehicle driving section into multiple working condition sections based on the real-time navigation information of the vehicle. Since the power parameters required for each working condition section are affected by other working condition sections, the rationality of the section division is ensured. In this way, the remote service platform takes into account the power parameters required for each working condition section from the perspective of the overall navigation, thereby calculating the expected power parameters of the target working condition section. The expected power parameters take into account the needs of each section and are reasonable and flexible. Then, the start-up of the range extender is controlled according to the expected power parameters and the real-time vehicle power parameters. The present application dynamically adjusts the start-up timing of the range extender from the perspective of the overall navigation to avoid frequent start and stop of the range extender, thereby extending the service life of the range extender. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0062] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0063] Figure 1 A schematic diagram of a range extender start system based on a navigation mode provided in an embodiment of the present application;

[0064] Figure 2 A flow chart of a range extender starting method based on a navigation mode provided in an embodiment of the present application;

[0065] Figure 3 A flow chart of a method for calculating a first required power generation amount provided in an embodiment of the present application;

[0066] Figure 4 A signaling diagram for determining the extended-range power generation power provided in an embodiment of the present application;

[0067] Figure 5 A schematic diagram of the structure of a range extender starting device based on a navigation mode provided in an embodiment of the present application;

[0068] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0070] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0071] The present application provides a range extender start system based on a navigation mode, such as Figure 1 As shown, the system includes an IVI (In-Vehicle Infotainment) cockpit, a VCU (Vehicle Control Unit) electronic control, and a TSP (Telematics Service Provider) cloud.

[0072] The range extender start system in this application needs to meet the prerequisites for starting, which are: the vehicle's navigation range extender mode is set to the on state, for example, IVI_NaviEna (the navigation function of the smart cockpit is enabled = 0x1, and the vehicle mode is set to the preset mode, for example, VCU_Vehicle Mode (the operating mode of the vehicle control unit) = 0x5.

[0073] The smart cockpit periodically sends real-time navigation information to the remote service platform. The remote service platform analyzes the real-time navigation information, thereby dividing the entire driving section of the vehicle into multiple working sections, and determining the power parameters required for each working section. The target working section where the vehicle is currently located is then determined, and the expected power parameters of the target working section are fed back to the smart cockpit. The smart cockpit forwards the expected power parameters to the vehicle control unit. The vehicle control unit obtains the current vehicle power parameters, and then determines the start parameters of the range extender based on the expected power parameters and the vehicle power parameters. If it is detected that the start parameters meet the navigation range extender start conditions, the range extender is controlled to start.

[0074] Optionally, the expected power parameter is calculated by the remote service platform based on real-time navigation information, and the expected power parameter represents the power parameter expected to be required by the vehicle in the target operating condition section.

[0075] Optionally, the vehicle power parameters include real-time power parameters obtained by the vehicle control unit based on sensor monitoring, and fixed power parameters obtained based on user settings.

[0076] Optionally, the navigation range extension start condition refers to a condition that is met when it is determined based on real-time navigation that the vehicle needs additional power support.

[0077] Optionally, the main function of the range extender is to extend the vehicle's mileage by charging the battery by driving the generator through the internal combustion engine when the battery is low on power.

[0078] Optionally, among the multiple working condition sections divided by the remote service platform, the distance and time of each working condition section are not fixed based on different division methods. For example, if divided based on road characteristics, the distance and time of the highway section will be different from the distance and time of the dirt road section; if divided based on vehicle speed, some working condition sections may be very long, such as 100km, and some working condition sections may be very short, such as 1km.

[0079] Optionally, the real-time navigation information includes road characteristics, complete mileage, mileage traveled, remaining mileage, travel time, remaining travel time, and road congestion, etc. Among them, the road characteristics describe the type of road the vehicle is currently on, such as highway, dirt road, etc.; the complete mileage represents the mileage required to travel from the departure point to the destination; the remaining mileage represents the distance required to travel from the current location to the destination; the travel time represents the time traveled from the departure point to the current moment; and the remaining travel time represents the time required to reach the destination from the current moment.

[0080] Optionally, the process of the remote service platform dividing the driving section into multiple working condition sections based on the navigation information is as follows: the smart cockpit regularly sends the vehicle's real-time navigation information to the remote service platform, including road characteristics, entire mileage, remaining mileage, and remaining driving time. The remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information, and the power parameters required for each working condition section are affected by other working condition sections. For example, a working condition section near the end point may be a climbing section, which requires more power to overcome gravity, and therefore consumes more fuel or electricity. The parameters of each working condition section will be adjusted according to the conditions of other sections. For example, if a working condition section that is about to be entered is a congested section, frequent starting and stopping and low-speed driving will lead to increased energy consumption, so the SOC operating parameters of the subsequent non-congested sections need to be adjusted.

[0081] Optionally, the smart cockpit sends the vehicle's real-time navigation information to the remote service platform at fixed intervals. The remote service platform will then update the power parameters required for each working section based on the real-time navigation information, such as the required SOC and the required power consumption, etc. The remote service platform will then feedback the expected power parameters of the target working section to the smart cockpit. The remote service platform will feedback data in two situations: one is to feedback data every time it receives navigation information sent by the smart cockpit, that is, periodic feedback based on a fixed period, and the other is to feedback data when it detects a switch to the next working section. For example, if the smart cockpit sends navigation information to the remote service platform every five minutes, the remote service platform will update the power parameters every five minutes and feed back the latest power parameters to the smart cockpit; if a certain working section only requires the vehicle to travel for three minutes, the remote service platform will update the power parameters of the next working section after three minutes and feed it back to the smart cockpit.

[0082] In the present application, the remote service platform dynamically divides the vehicle's driving section into multiple working condition sections based on the vehicle's real-time navigation information. Since the power parameters required for each working condition section are affected by other working condition sections, the rationality of the section division is ensured. In this way, the remote service platform takes the overall navigation perspective and comprehensively considers the power parameters required for each working condition section to calculate the expected power parameters of the target working condition section. The expected power parameters take into account the needs of each section and are reasonable and flexible. Then, the start-up of the range extender is controlled according to the expected power parameters and the real-time vehicle power parameters. The present application dynamically adjusts the start-up timing of the range extender from the perspective of the overall navigation to avoid frequent starting and stopping of the range extender, thereby extending the service life of the range extender.

[0083] The process of the remote service platform dividing the working condition sections and dynamically adjusting the power parameters of each working condition section is as follows: the remote service platform divides the entire driving section into multiple working condition sections according to a preset division method; determines multiple energy consumption parameters based on historical data in each working condition section, wherein the energy consumption parameters include speed, acceleration, load and section altitude; determines the initial power parameters required for the current working condition section based on the product of multiple energy consumption parameters; determines the section characteristics of the untraveled working condition section based on real-time navigation information, and determines the first power parameter required for the working condition section based on the energy consumption parameters and section characteristics of each untraveled working condition section; selects the second power parameter of the next working condition section from the first power parameter, and dynamically adjusts the power parameter required for the current working condition section based on the initial power parameter, the first power parameter and the second power parameter.

[0084] The remote service platform divides the entire driving section into multiple working condition sections according to a preset division method, wherein the division method can be road characteristics, such as highways, dirt roads, driving speeds, such as 100km / h or 40km / h, or terrain data, such as climbing, downhill, and flat. The remote service platform determines the historical data of each working condition section, and determines the energy consumption parameters of each working condition section based on the average value of the historical data. Energy consumption parameters include speed, acceleration, load, and section altitude, etc. The initial power parameter of the current working condition section = speed * acceleration * load * section altitude. For working condition sections that have not yet been driven, the remote service platform determines their section characteristics, including but not limited to: climbing conditions and congestion conditions, and then estimates the first power parameter required based on the section characteristics and energy consumption parameters of each working condition section that has not been driven, and extracts the second power parameter of the next working condition section, and then uses the following formula to obtain the adjusted power parameter of the current working condition section.

[0085] Eadjusted=Ebase*(1-Enext / Etotal)

[0086] Among them, Eadjusted refers to the adjusted power parameter of the current working section, Ebase refers to the initial power parameter of the current working section, Enext is the power parameter of the next working section (the second power parameter), and Etotal is the sum of the power parameters of all working sections that have not been driven (the sum of the first power parameters).

[0087] This application includes three modules: smart cockpit, remote service platform and vehicle control unit. The functions of each module are as follows:

[0088] The smart cockpit obtains real-time navigation information, such as road characteristics, remaining mileage and remaining driving time; the smart cockpit can also provide a user-friendly interface to allow users to set the first SOC value after the vehicle arrives at the destination, the minimum SOC value for forcibly starting the power conservation strategy, and the power limit value of the range extender, etc. These data set by the user can be transmitted to the vehicle control unit through the on-board network and saved in the vehicle control unit.

[0089] The remote service platform divides the working condition section according to the real-time navigation information and calculates multiple expected power parameters in the target working condition section.

[0090] The vehicle control unit collects vehicle data in real time based on the vehicle's built-in sensors and modules, including the vehicle's current operating status, such as current vehicle speed and current SOC; the vehicle control unit determines the navigation extended-range start-up conditions and navigation extended-range power generation strategy based on the real-time navigation information sent by the smart cockpit, user-set data, parameters in the target operating section, and real-time data acquired by itself.

[0091] Among them, since the data set by the user has been sent to the vehicle control unit in advance, the embodiment of the present application incorporates these data set by the user into the vehicle power parameters of the vehicle control unit.

[0092] Among them, the parameters involved in this application include the following:

[0093] The parameters captured by the smart cockpit include: 1. Real-time navigation information: road characteristics and entire mileage, etc.; 2. User-set data (the first SOC value after the vehicle arrives at the destination, the minimum SOC value for forcibly starting the power conservation strategy, the range extender power limit value, etc.).

[0094] Real-time vehicle parameters captured by the vehicle control unit: current vehicle speed, current SOC, etc.

[0095] The expected power parameters calculated by the remote service platform: expected SOC and expected power consumption.

[0096] Based on the same technical concept, the present application provides a range extender start method based on navigation mode, which is applied to a vehicle control unit, such as Figure 2 As shown, the method comprises the following steps:

[0097] Step 201: obtaining the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections;

[0098] Step 202: Determine the real-time vehicle power parameters of the vehicle in the target operating condition section;

[0099] Step 203: determining the start-up parameters of the range extender according to the expected power parameters and the vehicle power parameters;

[0100] Step 204: When it is detected that the start-up parameters meet the navigation range extender start-up conditions, the range extender is controlled to start.

[0101] The smart cockpit regularly sends real-time navigation information, which includes the vehicle's complete distance, distance traveled, and driving time. Based on this real-time navigation information, the remote service platform dynamically divides the vehicle's entire driving section into multiple working condition sections. The power parameters required for each working condition section (such as road conditions, slope, speed limit, etc.) are affected by other working condition sections to ensure the rationality and accuracy of the division. In this way, the remote service platform can calculate the power parameters required for each working condition section from a global perspective, providing a basis for subsequent power management and range extender control. The remote service platform sends the expected power parameters of the vehicle in the current target working condition section to the smart cockpit, and the smart cockpit forwards the expected power parameters to the vehicle control unit.

[0102] Next, the vehicle control unit determines the real-time vehicle power parameters of the vehicle in the current target operating section. This step involves real-time monitoring of the vehicle battery's state of charge (SOC) and obtaining the pre-stored battery-to-drive system efficiency and preset battery capacity. Through real-time monitoring, the vehicle's current power status can be accurately grasped, providing real-time data support for subsequent range extender startup decisions. The real-time vehicle power parameters combined with the expected power parameters can more accurately determine the start-up timing of the range extender and ensure that the vehicle's power needs under different operating conditions are met.

[0103] The vehicle control unit determines the start parameters of the range extender based on the expected power parameters and the real-time vehicle power parameters. This process involves a comprehensive analysis of the two parameters to determine whether the vehicle's current power meets the expected power requirements. If the current power is lower than the expected power, or it is expected that future operating conditions will result in insufficient power, the system will generate start parameters for the range extender. In this way, the system can dynamically adjust the start timing of the range extender to ensure that the range extender is started in time when necessary to avoid driving interruptions due to insufficient power.

[0104] Finally, when the vehicle control unit detects that the start parameters meet the navigation range extender start conditions, it controls the range extender to start. The navigation range extender start conditions ensure that the start timing of the range extender meets the needs of the current working conditions and takes into account changes in future working conditions.

[0105] In this way, frequent starting and stopping of the range extender can be avoided, mechanical wear and energy waste can be reduced, the service life of the range extender can be extended, and the vehicle's energy efficiency and driving experience can be improved.

[0106] As an optional implementation, in order to intelligently determine the start time of the range extender, the following operations need to be performed: detect the difference in power between the vehicle's required power generation and the power generated; when the power difference is greater than the set power threshold, if the vehicle's real-time battery status or driving speed meets the set conditions, determine that the start parameters meet the navigation range extender start conditions.

[0107] The vehicle control unit calculates the first required power generation of the vehicle in the section based on the vehicle's real-time navigation information and the characteristics of the current working section, ensures that the calculated first required power generation can meet the vehicle's driving needs, and then obtains the power generated by the generator control unit (GCU, Generator Control Unit), and then calculates the difference between the first required power generation and the power generated by the GCU. This difference reflects how much additional electrical energy the current vehicle needs in the working section to meet driving needs. The vehicle control unit compares the calculated power difference with the set power threshold. If the power difference is greater than the set power threshold, it means that the current vehicle's power is insufficient to meet driving needs, and the range extender needs to be started to supplement power.

[0108] When it is confirmed that the power difference is greater than the set power threshold, the vehicle control unit further checks the vehicle's real-time battery status and driving speed to ensure that the conditions for starting the range extender are met. The vehicle control unit detects the current SOC of the battery to determine whether the remaining power of the battery is lower than the expected state of charge. If the current state of charge of the battery is lower than the expected value, it means that the battery power is insufficient and the range extender needs to be started to replenish power. The vehicle control unit detects the current driving speed of the vehicle to determine whether it reaches or exceeds the maximum starting speed under the original extended-range power generation strategy. If the current speed reaches or exceeds the maximum starting speed, it means that the vehicle needs additional power support at high speed and the range extender needs to be started.

[0109] This application can intelligently detect and determine the start-up conditions of the range extender, ensuring that the range extender is started when necessary to avoid frequent starts and stops. Specifically, the vehicle control unit detects the difference between the vehicle's first required power generation and the power generation, and combines the current battery status and driving speed to comprehensively determine whether the navigation range extender start-up conditions are met. This method can not only reduce mechanical wear and improve energy efficiency, but also improve user experience and system stability, ensuring efficient operation of the vehicle under various working conditions.

[0110] Among them, the navigation range extension start conditions include the following:

[0111] Condition A: The first required power generation - GCU power generation > the first power threshold;

[0112] Condition B: Current SOC < expected SOC;

[0113] Condition C: The current vehicle speed ≥ the maximum starting speed under the original extended-range power generation strategy.

[0114] If the vehicle meets condition C and at least one of condition A and condition B, that is, when the conditions (A||B)&&C are met, the vehicle meets the navigation range extender start conditions and the range extender is started.

[0115] As an optional implementation, in the above condition A, the process of calculating the first required power generation includes the following steps:

[0116] Step 301: Calculate the SOC difference between the current SOC and the expected SOC;

[0117] Step 302: Determine the predicted power consumption according to the SOC difference, the efficiency of the battery to the drive system, and the battery capacity, wherein the predicted power consumption is used to indicate the power that can be consumed by the vehicle in the target operating condition section determined according to the real-time state of the vehicle;

[0118] Step 303: Calculate the first required power generation of the vehicle in the target operating condition section according to the difference between the predicted power consumption and the expected power consumption.

[0119] In the embodiment of the present application, the expected power parameters include the expected SOC and expected power consumption of the vehicle in the target operating section. The expected power consumption is the power that the vehicle needs to consume in the target operating section calculated by the cloud; the vehicle power parameters include the current SOC, the efficiency of the battery to the drive system, and the preset battery capacity; the startup parameters include the first required power generation. The first required power generation and the GCU power generation can be calculated using the above data. The calculation process of the GCU power generation and the first required power generation is described in detail below.

[0120] 1. GCU generated electricity refers to the amount of electricity that has been recorded by the generator control unit and generated by the generator.

[0121] The calculation formula of GCU power generation is as follows:

[0122]

[0123] Where Pwr represents power, GcuGen represents the power generation of the generator control unit, η 发电机到电池 represents the charging efficiency from the generator to the battery. 发电机到电池 It is a parameter set by the user and can be adjusted.

[0124] 2. The first required power generation refers to the amount of power that the range extender needs to generate in the current working section. Generally speaking, the amount of power that the vehicle can consume in the target working section (predicted power consumption) can be calculated based on the real-time status of the vehicle. The cloud also calculates the power consumption of the target working section (expected power consumption) through data analysis. The difference between the predicted power consumption and the expected power consumption is the amount of power that the range extender needs to generate (the first required power generation). The first required power generation reflects how much additional power the current vehicle needs in this working section to meet driving needs.

[0125] The calculation formula for the first required power generation is as follows:

[0126]

[0127] Furthermore, the expected power consumption is calculated through a mathematical model in the cloud. It is a basic value and cannot be adjusted in real time as the actual environment of the vehicle changes. Therefore, the formula can be further corrected. Correcting the expected power consumption means correcting the first required power consumption.

[0128] The process of correcting the first required power generation includes: obtaining real-time navigation information sent by the smart cockpit, and determining the vehicle's driving time and mileage in the target operating condition section based on the real-time navigation information; if the mileage reaches a preset mileage node and the driving time meets the preset time condition, then determining the node coefficient, wherein the node coefficient is used to indicate the number of mileage segments in the target operating condition section; determining the energy consumption coefficient based on the node coefficient, expected power consumption and actual power consumption, wherein the energy consumption coefficient is used to correct the expected power consumption; determining the final required energy consumption based on the quotient of the expected power consumption and the energy consumption coefficient; and calculating the first required power generation of the vehicle in the target operating condition section based on the difference between the predicted power consumption and the final required energy consumption.

[0129] Specifically, the correction trigger condition refers to when the system recalculates and adjusts the actual power consumption. This condition is usually determined based on the vehicle's mileage on the current road section. If the vehicle's driving time or distance is too short, the energy consumption data may not be sufficient to reflect the actual energy consumption situation, and correction at this time will lead to inaccurate results; if the vehicle's driving time or distance is too long, although the energy consumption data is more accurate, the best time for correction may have been missed, resulting in insufficient power generation in the later stage and unable to meet driving needs. Therefore, it is important to find a suitable opportunity to determine the correction trigger condition.

[0130] In order to solve this problem, the present application determines a correction timing, and determines the actual power consumption at the correction timing, so that the correction timing is neither too early nor too late, thereby improving the accuracy of the actual power consumption, and then improving the accuracy of the expected power consumption and the first required power generation, and ultimately achieving the purpose of starting the range extender at the right time.

[0131] The smart cockpit sends real-time navigation information to the vehicle control unit, which determines the vehicle's driving time and mileage in the target operating section, and then determines whether the driving time reaches the time threshold and whether the mileage reaches the preset mileage node. There are two cases based on the time threshold, as follows:

[0132] (1) When the vehicle's driving duration on the target operating section is less than 5 minutes, if the mileage has reached 1 / 3 of the target operating section, then correction is made at 1 / 3 of the target operating section to ensure that the power generation can be adjusted in time; conversely, if the vehicle's driving duration is less than 5 minutes but the mileage has not reached 1 / 3 of the target operating section, then no correction is made.

[0133] (2) When the vehicle has been traveling on the target operating condition section for a duration of 5 minutes or more, if the mileage has reached 1 / 2 of the target operating condition section, then a correction is made at 1 / 2 of the target operating condition section to ensure the accuracy of the correction; conversely, if the vehicle has been traveling on the target operating condition section for a duration of 5 minutes or more, but the mileage has not reached 1 / 2 of the target operating condition section, then no correction is made.

[0134] In the above example, if both the mileage traveled and the mileage driven meet the conditions, then the node coefficient can be determined based on the preset mileage node. The node coefficient indicates the number of mileage segments in the target operating condition section. For example, if the preset mileage node is 1 / 3, then the node coefficient n is 3, and if the preset mileage node is 1 / 2, then the node coefficient n is 2.

[0135] Next, the energy consumption coefficient can be calculated through the node coefficient, and the energy consumption coefficient is used to correct the expected power consumption.

[0136] The calculation formula of energy consumption coefficient c is as follows:

[0137]

[0138] c = expected power consumption / (actual power consumption*n)

[0139] The calculation formula for the first required power generation is as follows:

[0140]

[0141] When the vehicle's driving time on the target operating section is less than 5 minutes, if the mileage has reached 1 / 3 of the target operating section, n is 3; when the vehicle's driving time on the target operating section is greater than or equal to 5 minutes, if the mileage has reached 1 / 2 of the target operating section, n is 2.

[0142] As an optional implementation method, the extended-range power generation is generally calculated based on the power generation and duration. This application, on the basis of the original first required power generation, also takes into account the required power generation for opening accessories and the required power generation for vehicle climbing, so that the obtained second required power generation is more accurate. The calculation of the extended-range power generation in this way includes the following process:

[0143] If the target working condition section includes a climbing section, the climbing power requirement of the vehicle when climbing the slope is determined;

[0144] If the vehicle turns on the accessories in the target operating condition section, the accessory power requirement of the accessories is determined, wherein the accessories refer to auxiliary equipment other than the main power system in the vehicle;

[0145] Adding the accessory power demand and the ramp power demand to the first power demand to obtain the second power demand;

[0146] According to the SOC range where the SOC difference value is located, determining the power coefficient corresponding to the SOC range;

[0147] The extended-range power generation power is determined based on the second required power generation, the remaining driving time of the vehicle in the target operating condition section, and the power coefficient.

[0148] In the embodiment of the present application, calculating the extended range power generation power includes the following steps:

[0149] Step 1. The amount of electricity required for ramp climbing.

[0150] When the vehicle climbs a slope, the average slope α = (end point altitude - start point altitude) / working section mileage length, and then establish a calibration table for the coefficient k between the average slope α and the slope compensation power, then the required power for climbing = slope compensation power * k.

[0151] Step 2. Power requirements of accessories.

[0152] Accessories refer to auxiliary equipment in the vehicle other than the main power system, such as air conditioning, audio system, lighting system, seat heating or vehicle communication system, etc. When accessories are turned on, they will also consume power. The power required by accessories = accessory power * accessory duty cycle η * t (accessory on time), η can come from a temperature-related calibration table.

[0153] Step 3: The second required power generation = the first required power generation + the accessory required power generation + the climbing required power generation.

[0154] Step 4: Extended-range power generation = second required power generation / remaining driving time in the target operating condition section.

[0155] Step 5. In order to further improve the accuracy of the extended-range power generation, the power coefficient w corresponding to the SOC range can be determined according to the SOC range in which the SOC difference is located. For example, the SOC range is {0-5}, the corresponding power coefficient is 2, the SOC range is {5-10}, the corresponding power coefficient is 2.2, and so on.

[0156] In this way, the extended-range power generation power=the second required power generation amount*w / the remaining driving time in the target operating condition section.

[0157] The extended-range power generation can also be obtained by looking up a table. Table 1 is a query table for the extended-range power generation, which is calculated by the vehicle speed and the power balance equation of the vehicle. As can be seen from Table 1, the extended-range power generation can be queried based on the SOC range and vehicle speed.

[0158]

[0159]

[0160] Table 1

[0161] After obtaining the extended-range power generation, the present application can find the speed and torque of the range extender according to the value of the extended-range power generation based on the existing power generation economic curve, and then send the torque to the engine for torque control and send the speed to the GCU for speed control.

[0162] As an optional implementation, the range extender needs to be shut down when certain conditions are met. The navigation range extender shutdown conditions include:

[0163] Condition D: The first required power generation - GCU power generation < the second power threshold;

[0164] Condition E: Current SOC> expected SOC+SOC offset value;

[0165] Condition F: The current vehicle speed is less than the maximum starting speed under the original extended-range power generation strategy.

[0166] If the vehicle meets condition D and condition E, or meets condition F, that is, when the (D&&E)||F condition is met, it is determined that the navigation range extender shutdown condition is met and the range extender is shut down.

[0167] As an optional implementation, the method also includes: if the current SOC does not meet the set SOC range during vehicle driving, the power conservation strategy is forcibly started, wherein the power conservation strategy is to forcibly start the range extender, exit the navigation extended-range power generation strategy and adopt the original extended-range power generation strategy; wherein the current SOC does not meet the set SOC range includes: the SOC difference between the first expected SOC and the current SOC is greater than the set SOC threshold, wherein the expected SOC is the SOC value set by the user after the vehicle arrives at the destination; or, the current SOC is less than the second expected SOC, wherein the second expected SOC is the minimum SOC value for forcibly starting the power conservation strategy.

[0168] During actual operation, the vehicle may still experience extremely low SOC, which may trigger the forced activation of the power conservation strategy. The following are some possible reasons: the actual road conditions are worse than expected, there is a delay in data transmission between the cloud and the vehicle, resulting in the control command not reaching the vehicle in time, or the control algorithm fails, etc. Once the power conservation strategy is activated, the range extender is forced to start, the system exits the navigation range extension power generation strategy and adopts the original range extension power generation strategy.

[0169] The present application provides two methods for starting the power conservation strategy. The following describes in detail the two methods for starting the power conservation strategy.

[0170] The first method: first expected SOC-current SOC>set SOC threshold. The first expected SOC is the SOC value after the vehicle reaches the destination set by the user.

[0171] For example, if the SOC is 90% at the start, and the user sets it to 60% after the driving is completed, then the first expected SOC is 60%. If the system detects that the current SOC is 55%, and the SOC difference of 5% is greater than the set SOC threshold of 2%, then the power conservation strategy is initiated.

[0172] The second way: current SOC < second expected SOC.

[0173] The system sets the minimum SOC value for forcibly starting the power conservation strategy to the second expected SOC. For example, the second expected SOC is 3%. If the current SOC is 2%, the power conservation strategy needs to be started.

[0174] Correspondingly, this application also provides two corresponding methods to exit the power conservation strategy.

[0175] The first way: first expected SOC-current SOC≤set SOC threshold.

[0176] The second way: the current SOC ≥ the second expected SOC.

[0177] The above two power conservation strategies and their exit mechanisms can ensure that the battery power is effectively managed and protected during driving. By dynamically adjusting the output power of the range extender, the battery efficiency and life can be optimized under different driving conditions, while meeting the user's demand for driving range.

[0178] Based on the same technical concept, the present application also provides a signaling diagram for determining the extended range power generation power, such as Figure 4 As shown, the following steps are included:

[0179] Step 1: The user turns on the navigation extended-range mode and the vehicle is placed in the preset mode.

[0180] Step 2: The smart cockpit uses MQTT (Message Queuing Telemetry Transport) to send the vehicle's real-time navigation information to the remote service platform (real-time navigation information includes: road characteristics, remaining mileage, remaining driving time, etc.).

[0181] Step 3: The remote service platform divides the working condition sections into multiple sections based on the real-time navigation information, and then uses MQTT to feed back the expected power parameters of the target working condition section to the smart cockpit (the expected power parameters include: expected SOC, expected power consumption). The remote service platform updates the power parameters of each working condition section every time the set cycle is reached or the working condition section is changed.

[0182] Step 4: The smart cockpit uses CAN signals to forward the expected power parameters to the vehicle control unit.

[0183] Step 5: The vehicle control unit uses the expected power parameters and the vehicle power parameters to control the range extender to start, and then calculates the range extender power generation power.

[0184] Step 6: The vehicle control unit uses CAN signals to feed back data such as the extended-range power generation power to the smart cockpit.

[0185] Step 7: If the following conditions occur, the power conservation strategy is forcibly activated.

[0186] First expected SOC-current SOC>set SOC threshold; or,

[0187] The current SOC is less than the second desired SOC.

[0188] Among them, in step 5, the calculation process of the extended-range power generation power is as follows:

[0189] Step 51: Calculate the GCU generated power and the first required power generation. The calculation formula is as follows:

[0190]

[0191] Optionally, the node coefficient n can be determined according to the driving time and mileage of the vehicle in the target operating condition section, thereby determining the energy consumption coefficient c, and then correcting the expected power consumption to improve the accuracy of the first required power generation. The correction formula is as follows:

[0192]

[0193] c = expected power consumption / (actual power consumption*n)

[0194]

[0195] Step 52: Calculate the second required power generation by combining the power generation of the accessory and the ramp. The formula for the second required power generation is as follows:

[0196] The second required power generation = the first required power generation + the accessory required power + the climbing required power.

[0197] Step 53: Calculate the extended-range power generation power.

[0198] Extended-range power generation = second required power generation / remaining driving time in the target operating condition section.

[0199] Based on the same technical concept, the present application also provides a range extender starting device based on the navigation mode, such as Figure 5 As shown, the device comprises:

[0200] The acquisition module 501 is used to acquire the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections;

[0201] A first determination module 502 is used to determine a real-time vehicle power parameter of the vehicle in a target operating condition section;

[0202] A second determination module 503, configured to determine a start-up parameter of the range extender according to an expected power parameter and a vehicle power parameter;

[0203] The starting module 504 is used to control the range extender to start when it is detected that the starting parameters meet the navigation range extender starting conditions.

[0204] Optionally, the startup module 504 is used to:

[0205] Detect the difference between the vehicle's required power generation and the power generated;

[0206] When the power difference is greater than the set power threshold, if the real-time battery status or driving speed of the vehicle meets the set conditions, it is determined that the start parameters meet the navigation extended-range start conditions.

[0207] Optionally, the startup module 504 is used to:

[0208] If the vehicle meets condition C and meets at least one of condition A and condition B, it is determined that the start parameters meet the navigation extended range start conditions;

[0209] Among them, condition A: the first required power generation - GCU power generation > the first power threshold;

[0210] Condition B: Current SOC < expected SOC;

[0211] Condition C: The current vehicle speed ≥ the maximum starting speed under the original extended-range power generation strategy.

[0212] Optionally, the expected power parameters include expected SOC and expected power consumption, the vehicle power parameters include current SOC, efficiency of the battery to the drive system, and preset battery capacity, the startup parameters include the first required power generation, and the expected power consumption is the power required to be consumed by the vehicle in the target operating condition section calculated by the cloud; the second determination module 503 is used to:

[0213] Calculate the SOC difference between the current SOC and the desired SOC;

[0214] Determine the predicted power consumption according to the SOC difference, the efficiency of the battery to the drive system, and the battery capacity, wherein the predicted power consumption is used to indicate the power that can be consumed by the vehicle in the target operating condition section determined according to the real-time state of the vehicle;

[0215] The first required power generation of the vehicle in the target operating condition section is calculated based on the difference between the predicted power consumption and the expected power consumption.

[0216] Optionally, the second determining module 503 is used to:

[0217] Obtaining real-time navigation information sent by the smart cockpit, and determining the driving time and mileage of the vehicle in the target working condition section based on the real-time navigation information;

[0218] If the mileage traveled reaches the preset mileage node and the travel time meets the preset time condition, the node coefficient is determined, wherein the node coefficient is used to indicate the number of mileage segments in the target working condition section;

[0219] Determine an energy consumption coefficient according to the node coefficient, the expected power consumption and the actual power consumption, wherein the energy consumption coefficient is used to correct the expected power consumption;

[0220] Determine the final required energy consumption according to the quotient of the expected power consumption and the energy consumption coefficient;

[0221] According to the difference between the predicted power consumption and the final required energy consumption, the first required power generation of the vehicle in the target operating condition section is calculated.

[0222] Optionally, the device is also used for:

[0223] If the target working condition section includes a climbing section, the climbing power requirement of the vehicle when climbing the slope is determined;

[0224] If the vehicle turns on the accessories in the target operating condition section, the accessory power requirement of the accessories is determined, wherein the accessories refer to auxiliary equipment other than the main power system in the vehicle;

[0225] Adding the accessory power demand and the ramp power demand to the first power demand to obtain the second power demand;

[0226] According to the SOC range where the SOC difference value is located, determining the power coefficient corresponding to the SOC range;

[0227] The extended-range power generation power is determined according to the second required power generation, the remaining driving time of the vehicle in the target operating condition section, and the power coefficient, so that the range extender operates with the extended-range power generation power.

[0228] Optionally, the device is also used for:

[0229] If the vehicle meets conditions D and E, or meets condition F, it is determined that the range extender meets the navigation range extender shutdown condition, and the range extender is controlled to shut down;

[0230] Among them, condition D: the first required power generation - the GCU power generation < the second power threshold;

[0231] Condition E: Current SOC> expected SOC+SOC offset value;

[0232] Condition F: The current vehicle speed is less than the maximum starting speed under the original extended-range power generation strategy.

[0233] Optionally, the device is also used for:

[0234] If the current SOC does not meet the set SOC range during vehicle driving, the power conservation strategy is forced to start. The power conservation strategy is to force the start of the range extender, exit the navigation range extender power generation strategy and adopt the original range extender power generation strategy;

[0235] Among them, the current SOC does not meet the set SOC range including:

[0236] The SOC difference between the first expected SOC and the current SOC is greater than a set SOC threshold, wherein the expected SOC is the SOC value set by the user after the vehicle arrives at the destination; or,

[0237] The current SOC is less than the second expected SOC, where the second expected SOC is the minimum SOC value for forcibly starting the power conservation strategy.

[0238] like Figure 6 As shown, an embodiment of the present application provides an electronic device, including a processor 601, a communication interface 602, a memory 603 and a communication bus 604, wherein the processor 601, the communication interface 602, and the memory 603 communicate with each other through the communication bus 604.

[0239] The memory 603 is used to store computer programs.

[0240] In one embodiment of the present application, the processor 601 is used to implement the range extender starting method based on the navigation mode provided by any one of the aforementioned method embodiments when executing the program stored in the memory 603.

[0241] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the range extender starting method based on the navigation mode as provided in any of the aforementioned method embodiments are implemented.

[0242] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0243] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0244] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0245] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A range extender starting method based on navigation mode, characterized in that: The method comprises: Obtaining the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections; Determining a real-time vehicle power parameter of the vehicle in the target operating condition section; Determining a start parameter of the range extender according to the expected power parameter and the vehicle power parameter; When it is detected that the start-up parameter satisfies the navigation range-extending start-up condition, the range extender is controlled to start.

2. The method according to claim 1, characterized in that Detecting that the startup parameters meet the navigation extended range startup conditions includes: Detecting the difference between the required power generation and the generated power of the vehicle; In the case where the power difference is greater than a set power threshold, if the real-time battery status or driving speed of the vehicle meets set conditions, it is determined that the start parameter meets the navigation extended-range start condition.

3. The method according to claim 2, characterized in that Detecting that the startup parameters meet the navigation extended range startup conditions includes: If the vehicle satisfies condition C and satisfies at least one of condition A and condition B, it is determined that the start parameter satisfies the navigation extended range start condition; Among them, condition A: the first required power generation - GCU power generation > the first power threshold; Condition B: Current SOC < expected SOC; Condition C: The current vehicle speed ≥ the maximum starting speed under the original extended-range power generation strategy.

4. The method according to claim 3, characterized in that The expected power parameters include expected SOC and expected power consumption, the vehicle power parameters include current SOC, efficiency of battery to drive system and preset battery capacity, the startup parameters include first required power generation, and the expected power consumption is the power required to be consumed by the vehicle in the target operating condition section calculated by the cloud; Determining the first required power generation according to the expected power parameter and the vehicle power parameter includes: calculating an SOC difference between the current SOC and the desired SOC; Determine the predicted power consumption according to the SOC difference, the efficiency of the battery to the drive system, and the battery capacity, wherein the predicted power consumption is used to indicate the power that can be consumed by the vehicle in the target operating condition section determined according to the real-time state of the vehicle; According to the difference between the predicted power consumption and the expected power consumption, a first required power generation of the vehicle in the target operating condition section is calculated.

5. The method according to claim 4, characterized in that Calculating the first required power generation of the vehicle in the target operating condition section according to the difference between the predicted power consumption and the expected power consumption includes: Acquire real-time navigation information sent by the smart cockpit, and determine the driving time and mileage of the vehicle in the target working condition section according to the real-time navigation information; If the traveled mileage reaches a preset mileage node and the traveled time meets a preset time condition, a node coefficient is determined, wherein the node coefficient is used to indicate the number of mileage segments in the target operating condition section; Determine an energy consumption coefficient according to the node coefficient, the expected power consumption and the actual power consumption, wherein the energy consumption coefficient is used to correct the expected power consumption; Determining the final required energy consumption according to the quotient of the expected power consumption and the energy consumption coefficient; The first required power generation of the vehicle in the target operating condition section is calculated according to the difference between the predicted power consumption and the final required energy consumption.

6. The method according to claim 5, characterized in that After controlling the range extender to start, the method further includes: If the target operating condition section includes a climbing section, determining the climbing power requirement of the vehicle when climbing the slope; If the vehicle turns on an accessory in the target operating condition section, determining the accessory power requirement of the accessory, wherein the accessory refers to an auxiliary device other than the main power system in the vehicle; Add the accessory power requirement and the ramp-climbing power requirement to the first power requirement to obtain a second power requirement; Determining a power coefficient corresponding to the SOC range according to the SOC range in which the SOC difference value is located; The extended-range power generation power is determined according to the second required power generation, the remaining driving time of the vehicle in the target operating condition section, and the power coefficient, so that the range extender operates with the extended-range power generation power.

7. The method according to claim 6, characterized in that After the range extender operates with the extended-range power generation power, the method further includes: If the vehicle satisfies condition D and condition E, or condition F, it is determined that the range extender satisfies the navigation range extender shutdown condition, and the range extender is controlled to shut down; Among them, condition D: the first required power generation - the GCU power generation < the second power threshold; Condition E: Current SOC> expected SOC+SOC offset value; Condition F: The current vehicle speed is less than the maximum starting speed under the original extended-range power generation strategy.

8. The method according to claim 6, characterized in that After determining the extended-range power generation power, the method further includes: If the current SOC does not meet the set SOC range during vehicle driving, the power conservation strategy is forced to start, wherein the power conservation strategy is to force the start of the range extender, exit the navigation range extension power generation strategy and adopt the original range extension power generation strategy; Among them, the current SOC does not meet the set SOC range including: The SOC difference between the first expected SOC and the current SOC is greater than a set SOC threshold, wherein the expected SOC is the SOC value set by the user after the vehicle arrives at the destination; or, The current SOC is less than a second expected SOC, wherein the second expected SOC is a minimum SOC value for forcibly starting a power conservation strategy.

9. A range extender starting system using the range extender starting method based on the navigation mode as claimed in claim 1, characterized in that: The system includes a smart cockpit, a vehicle control unit and a remote service platform; The smart cockpit is used to periodically send real-time navigation information of the vehicle; The remote service platform is used to divide the entire driving section of the vehicle into a plurality of working condition sections according to the real-time navigation information, wherein the power parameters required for each working condition section are affected by other working condition sections, and determine the expected power parameters of the vehicle in the target working condition section currently located; The smart cockpit is further used to forward the expected power parameter to the vehicle control unit; The vehicle control unit is used to determine the real-time vehicle power parameters of the vehicle in the target operating condition section, and determine the start-up parameters of the range extender according to the expected power parameters and the vehicle power parameters, and control the start-up of the range extender when it is detected that the start-up parameters meet the navigation range extender start-up conditions.

10. A range extender starting device based on navigation mode, characterized in that: The device comprises: An acquisition module is used to acquire the expected power parameters of the vehicle in the current target working condition section sent by the smart cockpit, wherein the remote service platform divides the entire driving section of the vehicle into multiple working condition sections based on the real-time navigation information regularly sent by the smart cockpit, and the power parameters required for each working condition section are affected by other working condition sections; A first determination module is used to determine a real-time vehicle power parameter of the vehicle in the target operating condition section; A second determination module, configured to determine a start-up parameter of the range extender according to the expected power parameter and the vehicle power parameter; The starting module is used to control the start of the range extender when it is detected that the starting parameter meets the navigation range extender start condition.

11. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing any of the methods described in claims 1-8 when executing a program stored in a memory.

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