New energy automobile multifunctional endurance method and system

Abstract

The invention discloses a new energy automobile multifunctional endurance method and system, and relates to the technical field of new energy automobiles, and the method comprises the steps: obtaining navigation information of a target driving route, an average power consumption value in a vehicle historical distance interval, a vehicle battery capacity value, a current first residual electric quantity value of a battery, and a first power generation rate of a range extender; calculating to obtain a first estimated demand electric quantity value in the target driving route, a first generating capacity of the range extender and a first generating time of the range extender; presetting a state-of-charge threshold value of a vehicle battery; and judging whether the first estimated demand electric quantity is greater than the first residual electric quantity value, if so, judging whether the first residual electric quantity value is smaller than or equal to a charge state threshold value of a preset vehicle battery, and if not, generating a first control instruction based on the first generating capacity, so that a range extender generates power according to the first generating capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and particularly to a multi-functional endurance method and system for new energy vehicles. Background Art

[0002] With the rapid development of the electric vehicle market, the endurance mileage problem has always been one of the key factors restricting its wide application. Although battery technology and charging infrastructure are constantly improving, in the case of long-distance travel or the lack of fast charging stations in remote areas, pure electric vehicle users still face "endurance anxiety".

[0003] When some pure electric vehicle users go on long-distance trips or travel to remote areas, they will choose to install a range extender on the vehicle, and use the range extender to generate electricity with oil to provide the endurance ability of the electric vehicle. However, in the actual application process, the planning of the usage method of the range extender is unreasonable, resulting in the improvement of the endurance ability of the electric vehicle falling short of expectations. Summary of the Invention

[0004] To solve the technical problem of unreasonable planning of the usage method of the range extender in the prior art, the present invention provides a multi-functional endurance method and system for new energy vehicles.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The first aspect of the present application provides a multi-functional endurance method for new energy vehicles, including the following:

[0007] Obtain the navigation information of the target driving route, the average power consumption value within the vehicle's historical distance range, the vehicle battery capacity value, the first remaining power value of the current battery, and the first power generation rate of the range extender; wherein, the navigation information at least includes the distance of the target driving route and the estimated arrival time of the vehicle; based on the navigation information and the power consumption value within the vehicle's historical range, calculate the first estimated required power value within the target driving route; calculate the first power generation amount of the range extender according to the first estimated required power value and the remaining power of the vehicle; based on the first power generation amount and the first power generation rate, calculate the first power generation time of the range extender; based on the first power generation time, navigation information, the average power consumption value within the vehicle's historical distance range, the first estimated required power value, and the vehicle battery capacity value, preset the state of charge threshold of the vehicle battery; determine whether the first estimated required power is greater than the first remaining power value. If the first estimated required power is greater than the first remaining power value, then determine whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery. If the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery; then generate a first control instruction based on the first power generation amount; send the first control instruction to the range extender so that the range extender generates electricity according to the first power generation amount.

[0008] Preferably, presetting the state of charge threshold of the vehicle battery based on the first power generation time, navigation information, average power consumption value within the historical distance range of the vehicle, and the vehicle battery capacity value includes the following: estimating the first driving distance of the vehicle within the first power generation time based on the first power generation time and the navigation information; estimating the first power increase value of the vehicle battery within the first driving distance based on the first driving distance, the average power consumption value within the historical distance range of the vehicle, and the first estimated required power value; calculating the difference between the vehicle battery capacity value and the first power increase value, and setting the difference as the state of charge threshold of the preset vehicle battery.

[0009] Preferably, after sending the first control instruction to the range extender to enable the range extender to generate electricity according to the first power generation amount, it further includes the following: obtaining the first travel distance actually traveled by the vehicle within the first power generation time and the actual power consumption corresponding to the first travel distance; determining whether the actual power consumption corresponding to the first travel distance is greater than the power consumption expected by the vehicle within the first driving distance. If the actual power consumption corresponding to the first travel distance is greater than the power consumption expected by the vehicle within the first driving distance, then calculate the power difference between the actual power consumption corresponding to the first travel distance and the power consumption expected by the vehicle within the first driving distance, and generate a second control instruction based on the power difference; send the second control instruction to the range extender to enable the range extender to continue generating electricity within the second travel distance.

[0010] Preferably, if the actual power consumption corresponding to the first travel distance is greater than the power consumption expected by the vehicle within the first driving distance, calculating the power difference between the actual power consumption corresponding to the first travel distance and the power consumption expected by the vehicle within the first driving distance, and generating a second control instruction based on the power difference includes the following: if the actual power consumption corresponding to the first travel distance is greater than the power consumption expected by the vehicle within the first driving distance, then estimate the second power generation amount of the range extender within the second travel distance based on the actual power consumption and the road condition information of the first travel distance; calculate the second power generation time based on the second power generation amount and the first power generation rate; estimate the second power increase value of the vehicle battery within the second power generation time; obtain the second remaining power value of the battery after the first travel distance; determine whether the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value. If the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value, then generate a power generation rate adjustment instruction; generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

[0011] The second aspect of the present application provides a multi-functional endurance system for new energy vehicles, which applies the above-mentioned multi-functional endurance method for new energy vehicles and includes: a data acquisition module, which is used to obtain the navigation information of the target driving route, the average power consumption value within the vehicle's historical distance range, the vehicle battery capacity value, the first remaining power value of the current battery, and the first power generation rate of the range extender; wherein, the navigation information at least includes the distance of the target driving route and the estimated arrival duration of the vehicle; a first calculation module, which is used to calculate the first estimated required power value within the target driving route based on the navigation information and the power consumption value within the vehicle's historical range; the first calculation module is also used to calculate the first power generation amount of the range extender according to the first estimated required power value and the remaining power of the vehicle; a state of charge threshold setting module, which is used to preset the state of charge threshold of the vehicle battery based on the first power generation time, navigation information, the average power consumption value within the vehicle's historical distance range, the first estimated required power value, and the vehicle battery capacity value; a first judgment module, which is used to judge whether the first estimated required power is greater than the first remaining power value; if the first estimated required power is greater than the first remaining power value, then further judge whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery; a first control instruction generation module, if the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery, the control instruction generation module is used to generate a first control instruction based on the first power generation amount and send the first control instruction to the range extender, so that the range extender generates power according to the first power generation amount.

[0012] Preferably, the state of charge threshold setting module includes: a first estimation unit, which is used to estimate the first driving distance of the vehicle within the first power generation time based on the first power generation time and the navigation information; a second estimation unit, which is used to estimate the first power increase value of the vehicle battery within the first driving distance based on the first driving distance, the average power consumption value within the vehicle's historical distance range, and the first estimated required power value; a threshold setting unit, which is used to calculate the difference between the vehicle's battery capacity value and the first power increase value and set the difference as the preset state of charge threshold of the vehicle battery.

[0013] Preferably, it further includes: an actual power consumption information acquisition module, which is used to obtain the first driving distance actually traveled by the vehicle during the first power generation time and the actual power consumption corresponding to the first driving distance; a second judgment module, which is used to judge whether the actual power consumption corresponding to the first driving distance is greater than the power expected to be consumed by the vehicle within the first driving distance; a second calculation module, if the actual power consumption corresponding to the first driving distance is greater than the power expected to be consumed by the vehicle within the first driving distance, the second calculation module is used to calculate the power difference between the actual power consumption corresponding to the first driving distance and the power expected to be consumed by the vehicle within the first driving distance; a second control instruction generation module, which is used to generate a second control instruction based on the power difference and send the second control instruction to the range extender, so that the range extender continues to generate power during the second driving distance.

[0014] Preferably, the second control instruction generation module includes: a third estimation unit, if the actual power consumption corresponding to the first driving distance is greater than the power expected to be consumed by the vehicle within the first driving distance, the third estimation unit is used to estimate the second power generation amount of the range extender during the second driving distance based on the actual power consumption and the road condition information of the first driving distance; a first calculation unit, which is used to calculate the second power generation time based on the second power generation amount and the first power generation rate; a fourth estimation unit, which is used to estimate the second power increase value of the vehicle battery during the second power generation time; a power acquisition unit, which is used to obtain the second remaining power value of the battery after the first driving distance; a first judgment unit, which is used to judge whether the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value; a power generation rate adjustment unit, if the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value, the power generation rate adjustment unit is used to generate a power generation rate adjustment instruction; a second control instruction generation unit, which is used to generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

[0015] The beneficial effects of the present invention are as follows: By considering factors such as navigation information, the vehicle's historical power consumption value, real-time road conditions, and environmental conditions, the present invention presets the state of charge threshold (SOC) of the vehicle battery. The system makes an intelligent judgment based on the first estimated required power and the remaining power of the vehicle. Only when the first estimated required power is greater than the current remaining power and the remaining power is lower than the preset SOC threshold, a first control instruction is generated and sent to the range extender, and the range extender starts generating power based on the first control instruction. The power generation amount of the range extender when starting once is the first estimated required power, thus avoiding unnecessary start-stop operations of the range extender. By reducing the number of start-stop times, it can ensure that the range extender operates in a stable state for a longer time, which helps to extend the vehicle's cruising range. Description of the Drawings

[0016] Figure 1 Schematic flow chart of the method for generating the first control instruction in Embodiment 1 of the present invention;

[0017] Figure 2 Schematic flow chart of the method for generating the second control instruction in Embodiment 1 of the present invention;

[0018] Figure 3 Schematic flow chart of the method for presetting the state of charge threshold of the vehicle battery in Embodiment 1 of the present invention;

[0019] Figure 4 System block diagram of Embodiment 2 of the present invention. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Embodiment 1 provides a multi-functional endurance method for a new energy vehicle, as Figure 1 shown, including the following steps:

[0022] Step 1, obtain the navigation information of the target driving route, the average power consumption value within the historical distance interval of the vehicle, the vehicle battery capacity value, the first remaining power value of the battery at present, and the first power generation rate of the range extender.

[0023] Wherein, the navigation information includes at least the distance of the target driving route and the estimated arrival duration of the vehicle.

[0024] For reference, a new energy vehicle is equipped with a navigation system, which can, through technical means such as GPS and GIS, obtain and display the information of the target driving route in real time. The driver can input the destination in the navigation system, and the system can automatically plan the optimal driving route and provide key information such as the distance of the route and the estimated arrival duration. The navigation system should be able to monitor the road condition information in real time, including road congestion, traffic accidents and other situations.

[0025] For reference, the control system of a new energy vehicle can record the power consumption data of the vehicle within different distance intervals. These data can be collected through the vehicle's driving record system or a dedicated energy consumption monitoring module. According to the collected historical power consumption data, the average power consumption value of the vehicle within different distance intervals can be calculated, and these average power consumption values can be used as a reference basis for predicting the power consumption during future driving. For example: For example, the last 10 trips, the last 100 kilometers, etc. The unit of the average power consumption value can be kilowatt-hours per 100 kilometers (kWh / 100km). The system collects and analyzes the driving data of the vehicle over a period of time in the past, including the distance of each trip and the corresponding power consumption. Calculate the average power consumption value within a specific distance interval as the basic data for estimating the power consumption of future trips.

[0026] For reference, the battery capacity is one of the important technical parameters of a vehicle and can usually be found in the vehicle's technical specification or user manual. The vehicle's battery management system (BMS) can monitor the capacity status of the battery in real time and can also measure the remaining battery power in real time. The power generation rate of the range extender is also one of its important technical parameters and can usually be found in the range extender's technical specification or user manual, or can be read from the vehicle's engine control unit (ECU) or the control system of the range extender itself. The system obtains this value from the ECU or the range extender control system through an internal communication protocol for calculating the power generation time and the amount of power generated.

[0027] Step 2: Based on the navigation information and the power consumption value within the historical intervals of the vehicle, calculate the first estimated required power value within the target driving route.

[0028] For reference, correspond the driving distance and the actual power consumption in the selected historical power consumption data, and calculate the power consumption per unit distance for each interval (i.e., power consumption / driving distance). Average the power consumption per unit distance for all intervals to obtain the average power consumption per unit distance of the vehicle under historical similar driving conditions. Multiply the distance of the target driving route by the average power consumption per unit distance to obtain the estimated required power value within the target driving route.

[0029] Step 3: Calculate the first power generation amount of the range extender according to the first estimated required power value and the remaining power of the vehicle.

[0030] For reference, obtain and confirm the first estimated required power value within the target driving route from Step 2, which represents the power required for the vehicle to complete the target driving route. Obtain the remaining power in the current battery from the battery management system (BMS), and calculate the difference between the first estimated required power value and the current remaining power to determine the first power generation amount of the range extender.

[0031] Step 4: Based on the first power generation amount and the first power generation rate, calculate the first power generation time of the range extender.

[0032] For reference, the first power generation rate is the amount of electrical energy that the range extender can generate per hour under normal operating conditions. Divide the first power generation amount by the first power generation rate to obtain the first power generation time of the range extender.

[0033] Step 5: Based on the first power generation time, navigation information, average power consumption value within the historical distance intervals of the vehicle, first estimated required power value, and vehicle battery capacity value, preset the state of charge threshold of the vehicle battery.

[0034] Considering the situation of preferentially using oil for power generation, generally, if the preset state of charge threshold (SOC value) of the vehicle battery is set relatively high, for example, the SOC value of the vehicle battery is set to 80%, which means that when the power of the vehicle battery is lower than 80% of the battery capacity value, the range extender will start to generate electricity. For example, when the battery capacity value is 100 kWh, when the power of the battery drops to 80 kWh, the range extender will start to generate electricity according to the first control instruction. However, the power generation rate of the range extender is greater than the power consumption rate of the electric vehicle. That is to say, during the vehicle driving process, the power of the vehicle battery will increase. During the operation of the range extender, the power of the vehicle battery will gradually increase, and there is a risk of exceeding the maximum capacity value of the battery (i.e., 100 kWh), or the excess power exceeding the maximum capacity of the battery is wasted.

[0035] To solve the above problems, in a possible implementation manner, as Figure 3 shown, based on the first power generation time, navigation information, average power consumption value within the vehicle historical distance interval, and vehicle battery capacity value, the preset state of charge threshold of the vehicle battery includes the following:

[0036] Step 5.1, estimate the first driving distance of the vehicle within the first power generation time based on the first power generation time and the navigation information.

[0037] A reference example is: According to the road type and estimated arrival duration in the navigation information, the average driving speed of the vehicle within the first power generation time can be estimated, and multiplying the first power generation time by the average speed can obtain the estimated first driving distance.

[0038] Step 5.2, estimate the first power increase value of the vehicle battery within the first driving distance based on the first driving distance, average power consumption value within the vehicle historical distance interval, and first estimated demand power value.

[0039] A reference example is: Using the average power consumption value within the vehicle historical distance interval (i.e., power consumption per kilometer), the power that the vehicle is expected to consume within the first driving distance can be estimated. Since the situation of range extender power generation is considered here, within the first driving distance, the battery power will not decrease but increase due to the power generation of the range extender. The first power increase value refers to the power value that the battery is expected to increase during the operation of the range extender. Without considering the charging efficiency, for simplified calculation, the first power increase value can be obtained by subtracting the power that the vehicle is expected to consume within the first driving distance from the first estimated demand power value.

[0040] Step 5.3, calculate the difference between the vehicle battery capacity value and the first power increase value, and set the difference as the preset state of charge threshold of the vehicle battery.

[0041] Reference example: Subtract the estimated first power increase value from the battery capacity value of the vehicle (for example, 100 kWh) to obtain a difference, and set this difference as the preset state of charge threshold (SOC value) of the vehicle battery. When the power of the vehicle battery is less than or equal to this SOC threshold, the range extender will start generating electricity. By means of the preset state of charge threshold of the vehicle battery, the overcharge risk caused by the power generation rate being greater than the power consumption rate can be avoided.

[0042] For example, if the battery is 100 kWh and the first power increase value is 13 kWh, then the preset battery SOC value should be 87%. Even if the power of the vehicle battery gradually increases during the operation of the range extender, it will not exceed the maximum capacity value of the battery (100 kWh), thus effectively avoiding the overcharge risk.

[0043] Step 6: Determine whether the first estimated required power is greater than the first remaining power value. If the first estimated required power is greater than the first remaining power value, then execute Step 7.

[0044] Among them, if the first estimated required power is greater than the first remaining power value, it means that the current remaining power is not enough to cover the demand for the entire journey, and the range extender needs to generate electricity.

[0045] If the first estimated required power is less than or equal to the first remaining power value, it means that the current remaining power is enough to cover the demand for the entire journey, and the range extender does not need to generate electricity. The system continues to monitor the power change and waits for the next evaluation.

[0046] Step 7: Determine whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery. If the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery, then execute Step 8.

[0047] Among them, if the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery, it means that the current battery power is less than the preset threshold, and the range extender needs to be started to generate electricity.

[0048] If the first remaining power value is greater than the preset state of charge threshold of the vehicle battery, it means that the current battery power is higher than the preset threshold, and the range extender does not need to be started to generate electricity temporarily. The system continues to monitor the power change until the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery.

[0049] Step 8: Generate a first control command based on the first generated power.

[0050] Step 9: Send the first control command to the range extender so that the range extender generates electricity according to the first generated power.

[0051] Among them, the system sends the first control instruction to the range extender control system through an internal communication protocol (such as the CAN bus). After receiving the instruction, the range extender control system parses the instruction content and starts the corresponding working mode, and begins to generate electricity according to the first power generation amount.

[0052] Considering that the first estimated required power value is calculated before departure based on the navigation information and the power consumption value within the vehicle's historical range, and does not estimate the road conditions in the actual vehicle driving route, there is an inaccurate problem with the first estimated required power value. After the range extender finishes generating electricity according to the first estimated required power value, it will stop. If the actual power consumption is greater than the first estimated required power value, the range extender needs to be started twice or even multiple times, increasing fuel consumption and engine wear, and reducing fuel efficiency.

[0053] To solve the above problems, in a possible implementation, as Figure 2 shown, after sending the first control instruction to the range extender to make the range extender generate electricity according to the first power generation amount, the following content is also included:

[0054] Step 10, obtain the first travel distance actually traveled by the vehicle during the first power generation time and the actual power consumption corresponding to the first travel distance.

[0055] Step 11, determine whether the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first travel distance. If the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first travel distance, then execute Step 12.

[0056] Step 12, calculate the power difference between the actual power consumption corresponding to the first travel distance and the power that the vehicle is expected to consume within the first travel distance.

[0057] Step 13, generate a second control instruction based on the power difference and send the second control instruction to the range extender to make the range extender continue to generate electricity during the second travel distance.

[0058] In the above solution, it is equivalent to making the range extender generate more electricity at one time to meet the needs of the entire journey. Suppose the battery capacity value is 100 degrees, assume that the battery of the electric vehicle is 87 degrees when it departs, assume that the first power generation amount is to generate 28 degrees of electricity, set the first power generation time as T1, the first travel distance as s1. During the T1 time, the range extender generates 28 degrees of electricity. Suppose it is estimated that 15 degrees are consumed within the first travel distance S1, but the actual first travel distance S1 actually traveled during the T1 time consumes 17 degrees, consuming two degrees more than the estimate; set the second travel distance as S2. Normally, the range extender still needs to generate two more degrees of electricity during the second travel distance S2.

[0059] However, considering that the first journey S1 and the second journey S2 are continuous driving routes, since the actual power consumption of the first journey S1 is two degrees more than the estimated value, it is possible that the power consumption of the second journey S2 is also more than the estimated value. If the range extender only generates electricity according to two degrees during the second journey, it is still possible that the final power is not enough to support the vehicle to complete the second journey.

[0060] To solve the above problems, in a possible implementation, if the actual power consumption corresponding to the first journey is greater than the power consumption expected by the vehicle within the first driving distance, the second control instruction is generated and includes the following content:

[0061] If the actual power consumption corresponding to the first journey is greater than the power consumption expected by the vehicle within the first driving distance, then based on the actual power consumption and the road condition information of the first journey, estimate the second power generation amount of the range extender during the second journey.

[0062] For reference, the first journey and the second journey are continuous similar paths. Machine learning algorithms (such as random forest, LSTM, etc.) can be used to train historical data to build an estimation model that can comprehensively consider various factors (such as road type, weather conditions, driving behavior, etc.). The specific steps can be to convert the actual power consumption, road condition information, weather conditions, driving behavior characteristics, etc. into feature vectors. Use historical data for model training and continuously optimize to improve the prediction accuracy. Based on the latest actual data, perform real-time prediction to obtain the estimated power consumption E2 of the remaining second journey.

[0063] Let the actual power consumption corresponding to the first journey be E1, and the first estimated required power be E3. Then the second power generation amount E of the range extender during the second journey is E = E1 + E2 - E3.

[0064] After obtaining the second power generation amount, generally speaking, the second control instruction can be generated according to the second power generation amount, so that the range extender continues to generate electricity without stopping during the second journey. However, considering that after the end of the first journey, the battery power is relatively sufficient. Suppose the battery power is 90 degrees and the battery margin is 10 degrees after the end of the first journey. However, during the second journey, the power increase value of the battery may be greater than the remaining capacity of the battery, resulting in the risk of overcharging.

[0065] To solve the above problems, after obtaining the second power generation amount, it is also necessary to calculate the second power generation time based on the second power generation amount and the first power generation rate. Estimate the second power increase value of the vehicle battery during the second power generation time. Obtain the second remaining power value of the battery after the end of the first journey.

[0066] Determine whether the sum of the second power increment value and the second remaining power value is greater than the vehicle battery capacity value. If the sum of the second power increment value and the second remaining power value is greater than the vehicle battery capacity value, generate a power generation rate adjustment instruction.

[0067] For reference, when the sum of the second power increment value and the second remaining power value is greater than the vehicle battery capacity value, it indicates that there is a risk of overcharging. It is necessary to generate a power generation rate adjustment instruction to reduce the power generation rate of the range extender, thereby reducing the second power generation amount or extending the power generation time to avoid overcharging.

[0068] Generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

[0069] For reference, the system sends the second control instruction to the range extender control system through an internal communication protocol. After receiving the instruction, the range extender control system parses the instruction content and starts the corresponding working mode, and begins to continue power generation according to the new power generation amount and power generation rate.

[0070] Embodiment 2 provides a new energy vehicle multi-functional endurance system, which applies the new energy vehicle multi-functional endurance method described in Embodiment 1, as Figure 4 shown, including:

[0071] A data acquisition module, which is used to obtain navigation information of the target driving route, the average power consumption value within the vehicle's historical distance interval, the vehicle battery capacity value, the first remaining power value of the battery at present, and the first power generation rate of the range extender; wherein, the navigation information at least includes the distance of the target driving route and the estimated arrival duration of the vehicle.

[0072] A first calculation module, which is used to calculate the first estimated required power value within the target driving route based on the navigation information and the power consumption value within the vehicle's historical interval; the first calculation module is further used to calculate the first power generation amount of the range extender according to the first estimated required power value and the remaining power of the vehicle.

[0073] A state of charge threshold setting module, which is used to preset the state of charge threshold of the vehicle battery based on the first power generation time, navigation information, the average power consumption value within the vehicle's historical distance interval, the first estimated required power value, and the vehicle battery capacity value.

[0074] A first judgment module, which is used to judge whether the first estimated required power is greater than the first remaining power value; if the first estimated required power is greater than the first remaining power value, further judge whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery.

[0075] The first control instruction generation module, if the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery, is used to generate a first control instruction based on the first power generation amount and send the first control instruction to the range extender, so that the range extender generates power according to the first power generation amount.

[0076] In a possible implementation manner, the state of charge threshold setting module includes: a first estimation unit, which is used to estimate the first driving distance of the vehicle within the first power generation time based on the first power generation time and the navigation information.

[0077] A second estimation unit, which is used to estimate the first power increase value of the vehicle battery within the first driving distance based on the first driving distance, the average power consumption value within the vehicle historical distance range, and the first estimated power demand value.

[0078] A threshold setting unit, which is used to calculate the difference between the battery capacity value of the vehicle and the first power increase value, and set the difference as the preset state of charge threshold of the vehicle battery.

[0079] In a possible implementation manner, it further includes: an actual power consumption information acquisition module, which is used to acquire the first travel distance actually traveled by the vehicle within the first power generation time and the actual power consumption corresponding to the first travel distance.

[0080] A second judgment module, which is used to judge whether the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance.

[0081] A second calculation module, if the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance, is used to calculate the power difference between the actual power consumption corresponding to the first travel distance and the power that the vehicle is expected to consume within the first driving distance.

[0082] A second control instruction generation module, which is used to generate a second control instruction based on the power difference and send the second control instruction to the range extender, so that the range extender continues to generate power within the second travel distance.

[0083] In a possible implementation manner, the second control instruction generation module includes: a third estimation unit, if the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance, is used to estimate the second power generation amount of the range extender within the second travel distance based on the actual power consumption and the road condition information of the first travel distance.

[0084] A first calculation unit, which is used to calculate the second power generation time based on the second power generation amount and the first power generation rate.

[0085] A fourth estimation unit, which is configured to estimate a second power increment of a vehicle battery during a second power generation time.

[0086] A power acquisition unit, which is configured to acquire a second remaining power value of the battery after the first trip.

[0087] A first determination unit, which is configured to determine whether the sum of the second power increment and the second remaining power value is greater than the vehicle battery capacity value.

[0088] A power generation rate adjustment unit, if the sum of the second power increment and the second remaining power value is greater than the vehicle battery capacity value, the power generation rate adjustment unit is configured to generate a power generation rate adjustment instruction.

[0089] A second control instruction generation unit, which is configured to generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

[0090] The above embodiments merely represent specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A multi-functional endurance method for new energy vehicles, characterized in that, It includes the following: Obtain the navigation information of the target driving route, the average power consumption value within the historical distance range of the vehicle, the vehicle battery capacity value, the first remaining power value of the current battery, and the first power generation rate of the range extender; wherein, the navigation information at least includes the distance of the target driving route and the estimated arrival duration of the vehicle; Based on the navigation information and the power consumption value within the historical range of the vehicle, calculate the first estimated required power value within the target driving route; According to the first estimated required power value and the remaining power of the vehicle, calculate the first power generation amount of the range extender; Based on the first power generation amount and the first power generation rate, calculate the first power generation time of the range extender; Based on the first power generation time, navigation information, the average power consumption value within the historical distance range of the vehicle, the first estimated required power value, and the vehicle battery capacity value, preset the state of charge threshold of the vehicle battery; Judge whether the first estimated required power is greater than the first remaining power value. If the first estimated required power is greater than the first remaining power value, then judge whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery. If the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery; then generate a first control instruction based on the first power generation amount; Send the first control instruction to the range extender so that the range extender generates electricity according to the first power generation amount.

2. The multi-functional endurance method for new energy vehicles according to claim 1, characterized in that, Presetting the state of charge threshold of the vehicle battery based on the first power generation time, navigation information, the average power consumption value within the historical distance range of the vehicle, and the vehicle battery capacity value includes the following: Estimate the first driving distance of the vehicle during the first power generation time based on the first power generation time and the navigation information; Estimate the first power increase value of the vehicle battery within the first driving distance based on the first driving distance, the average power consumption value within the historical distance range of the vehicle, and the first estimated required power value; Calculate the difference between the vehicle battery capacity value and the first power increase value, and set the difference as the preset state of charge threshold of the vehicle battery.

3. The multi-functional endurance method for new energy vehicles according to claim 2, characterized in that, After sending the first control instruction to the range extender so that the range extender generates electricity according to the first power generation amount, it further includes the following: Obtain the first travel distance actually traveled by the vehicle during the first power generation time and the actual power consumption corresponding to the first travel distance; Judge whether the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance. If the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance, then calculate the power difference between the actual power consumption corresponding to the first travel distance and the power that the vehicle is expected to consume within the first driving distance, and generate a second control instruction based on the power difference; Send the second control instruction to the range extender so that the range extender continues to generate electricity during the second travel distance.

4. The multi-functional endurance method for new energy vehicles according to claim 3, characterized in that, If the actual power consumption corresponding to the first travel distance is greater than the power that the vehicle is expected to consume within the first driving distance, then calculating the power difference between the actual power consumption corresponding to the first travel distance and the power that the vehicle is expected to consume within the first driving distance, and generating a second control instruction based on the power difference includes the following: If the actual power consumption corresponding to the first trip is greater than the power that the vehicle is expected to consume within the first driving distance, then based on the actual power consumption and the road condition information of the first trip, estimate the second power generation amount of the range extender during the second trip; Calculate the second power generation time based on the second power generation amount and the first power generation rate; Estimate the second power increase value of the vehicle battery during the second power generation time; Obtain the second remaining power value of the battery after the first trip; Determine whether the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value. If the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value, generate a power generation rate adjustment instruction; Generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

5. A multi-functional endurance system for new energy vehicles, characterized in that, Applying the new energy vehicle multi-functional endurance method according to any one of claims 1-4, including: A data acquisition module, which is used to obtain the navigation information of the target driving route, the average power consumption value within the vehicle's historical distance interval, the vehicle battery capacity value, the first remaining power value of the current battery, and the first power generation rate of the range extender; wherein, the navigation information includes at least the distance of the target driving route and the expected arrival duration of the vehicle; A first calculation module, which is used to calculate the first estimated demand power value within the target driving route based on the navigation information and the power consumption value within the vehicle's historical interval; the first calculation module is also used to calculate the first power generation amount of the range extender according to the first estimated demand power value and the remaining power of the vehicle; A state of charge threshold setting module, which is used to preset the state of charge threshold of the vehicle battery based on the first power generation time, the navigation information, the average power consumption value within the vehicle's historical distance interval, the first estimated demand power value, and the vehicle battery capacity value; A first judgment module, which is used to judge whether the first estimated demand power is greater than the first remaining power value; if the first estimated demand power is greater than the first remaining power value, then further judge whether the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery; A first control instruction generation module. If the first remaining power value is less than or equal to the preset state of charge threshold of the vehicle battery, the control instruction generation module is used to generate a first control instruction based on the first power generation amount and send the first control instruction to the range extender so that the range extender generates power according to the first power generation amount.

6. The multi-functional endurance system for new energy vehicles according to claim 5, characterized in that, The state of charge threshold setting module includes: A first estimation unit, which is used to estimate the first driving distance of the vehicle during the first power generation time based on the first power generation time and the navigation information; A second estimation unit, which is used to estimate the first power increase value of the vehicle battery during the first driving distance based on the first driving distance, the average power consumption value within the vehicle's historical distance interval, and the first estimated demand power value; A threshold setting unit, which is used to calculate the difference between the vehicle battery capacity value and the first power increase value and set the difference as the preset state of charge threshold of the vehicle battery.

7. The multifunctional endurance system for new energy vehicles according to claim 6, characterized in that, It further includes: An actual power consumption information acquisition module, which is used to obtain the first driving distance actually traveled by the vehicle during the first power generation time and the actual power consumption corresponding to the first driving distance; A second judgment module, which is used to judge whether the actual power consumption corresponding to the first driving distance is greater than the power that the vehicle is expected to consume within the first driving distance; A second calculation module. If the actual power consumption corresponding to the first driving distance is greater than the power that the vehicle is expected to consume within the first driving distance, the second calculation module is used to calculate the power difference between the actual power consumption corresponding to the first driving distance and the power that the vehicle is expected to consume within the first driving distance; A second control instruction generation module, which is used to generate a second control instruction based on the power difference and send the second control instruction to the range extender, so that the range extender continues to generate power during the second driving distance.

8. The multifunctional endurance system for new energy vehicles according to claim 7, characterized in that, The second control instruction generation module includes: A third estimation unit. If the actual power consumption corresponding to the first driving distance is greater than the power that the vehicle is expected to consume within the first driving distance, the third estimation unit is used to estimate the second power generation amount of the range extender during the second driving distance based on the actual power consumption and the road condition information of the first driving distance; A first calculation unit, which is used to calculate the second power generation time based on the second power generation amount and the first power generation rate; A fourth estimation unit, which is used to estimate the second power increase value of the vehicle battery during the second power generation time; A power acquisition unit, which is used to obtain the second remaining power value of the battery after the first driving distance; A first judgment unit, which is used to judge whether the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value; A power generation rate adjustment unit. If the sum of the second power increase value and the second remaining power value is greater than the vehicle battery capacity value, the power generation rate adjustment unit is used to generate a power generation rate adjustment instruction; A second control instruction generation unit, which is used to generate a second control instruction based on the power generation rate adjustment instruction and the second power generation amount.

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