Range extender control method and device of vehicle, vehicle and storage medium

Abstract

The application relates to a range extender control method and device of a vehicle, the vehicle and a storage medium, wherein the method comprises the following steps: acquiring average driving energy consumption of the vehicle; determining a current state of a hill driving working condition of the vehicle according to the average driving energy consumption, and judging whether the vehicle is in a long downhill mode according to driving distance and atmospheric pressure change information of the current state for the uphill state and the downhill state respectively; if the vehicle is in the long downhill mode, controlling the range extender to execute an optimized control strategy corresponding to the long downhill mode. According to the application, the driving working condition of the vehicle can be determined according to the average driving energy consumption, and the range extender can be controlled to execute the corresponding optimized control strategy when the vehicle is in the long downhill mode, so that the navigation information is not needed, the reliability is higher, the NVH performance of the vehicle is improved, the economy of the vehicle is improved, and the driving experience of the driver is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a range extender control method and device for a vehicle, a vehicle, and a storage medium. BACKGROUND

[0002] A range-extending new energy vehicle is composed of an engine as a range extender and a generator. The range extender is directly connected to the generator and does not participate in directly driving the vehicle. The range extender is completely decoupled from the drive motor, and the range extender only charges the power battery by generating power. At present, the range-extending new energy vehicle mostly adopts fixed-point power generation, multi-point power generation, and power-following power generation strategies. In the above power generation strategies, the fixed-point power generation and multi-point power generation have better oil consumption and NVH (Noise Vibration Harshness) performance, but poor power preservation capability. The power-following strategy has strong power preservation capability, but poor NVH performance.

[0003] In related technologies, such as patent CN113071335B, a range-extending vehicle energy control method, a control system thereof, and a storage medium, the to-be-traveled road information is determined according to the to-be-traveled road information, and when the to-be-traveled road condition includes a downhill, the range extender of the vehicle is controlled to stop charging the vehicle battery.

[0004] However, in related technologies, the to-be-traveled road condition is determined depending on the road information provided by the navigation system, which leads to high requirements for the accuracy of the navigation map, poor universality, and failure to consider the case where the road slope does not stop changing. The application scenario is single, which easily leads to frequent starting of the range extender of the vehicle, waste of resources, poor economy, inability to work in the range extension function in the case where the navigation is not turned on, and poor driving experience, which needs to be improved. SUMMARY

[0005] The present application provides a range extender control method and device for a vehicle, a vehicle, and a storage medium to solve the problems in related technologies, such as dependence on road information provided by a navigation system, high requirements for the accuracy of a navigation map, poor universality, failure to consider the case where a road slope does not stop changing, a single application scenario, easy to cause the range extender of the vehicle to start frequently, waste of resources, poor economy, inability to work in the range extension function in the case where the navigation is not turned on, and poor driving experience.

[0006] The first aspect embodiment of the present application provides a range extender control method for a vehicle, including the following steps: obtaining the average driving energy consumption of the vehicle; determining the current state of the hill driving working condition of the vehicle according to the average driving energy consumption, and judging whether the vehicle is in a long downhill mode according to the driving distance and atmospheric pressure change information when the current state is an uphill state and a downhill state, respectively; and if the vehicle is in the long downhill mode, controlling the range extender to perform an optimized control strategy corresponding to the long downhill mode.

[0007] According to the technical means, the average driving energy consumption of the vehicle is determined to determine the driving working condition of the vehicle, and the range extender is controlled to perform the corresponding optimization control strategy in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver.

[0008] Optionally, in an embodiment of the present application, the control of the range extender to perform the optimization control strategy corresponding to the long downhill mode comprises: requesting the range extender to stop according to the long-time discharge power of the battery of the power battery; or limiting the maximum power generation power of the range extender to a preset power interval.

[0009] According to the technical means, the average driving energy consumption of the vehicle is determined to determine the driving working condition of the vehicle, and the range extender is controlled to perform the corresponding optimization control strategy in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver.

[0010] Optionally, in an embodiment of the present application, the average driving energy consumption of the vehicle is obtained by obtaining the acceleration information, the speed information and the torque information of the driving motor of the vehicle, calculating the driving power consumption of the vehicle during uniform speed driving according to the acceleration information, the speed information and the torque information, and calculating the average driving energy consumption according to the driving power consumption during uniform speed driving.

[0011] According to the technical means, the average driving energy consumption of the vehicle is determined to determine the driving working condition of the vehicle, and the range extender is controlled to perform the corresponding optimization control strategy in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver.

[0012] Optionally, in an embodiment of the present application, the current state of the driving working condition of the vehicle is determined according to the average driving energy consumption, comprising: when the average driving energy consumption is greater than a preset uphill energy consumption, determining that the current state is the uphill state, and obtaining the driving distance and the atmospheric pressure change information of the uphill state; when the average driving energy consumption is less than a preset downhill energy consumption, determining that the current state is the downhill state, and obtaining the driving distance and the atmospheric pressure change information of the downhill state.

[0013] According to the technical means, the average driving energy consumption of the vehicle is determined to determine the driving working condition of the vehicle, and the range extender is controlled to perform the corresponding optimization control strategy in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver.

[0014] Optionally, in an embodiment of the present application, after the range extender is controlled to execute the optimized control strategy corresponding to the long downhill mode, the method further comprises: detecting whether the average driving energy consumption of the vehicle is greater than the preset downhill energy consumption; and controlling the vehicle to exit the long downhill mode when it is detected that the average driving energy consumption is greater than the preset downhill energy consumption.

[0015] According to the above technical means, the embodiments of the present application can control whether the vehicle exits the long downhill mode according to whether the average driving energy consumption is greater than the preset downhill energy consumption, thereby improving the intelligence of the vehicle, improving the utilization rate of resources, achieving the effect of energy consumption reduction, and optimizing the driving experience of the user.

[0016] The second aspect of the present application provides a range extender control device of a vehicle, comprising: an acquisition module configured to acquire average driving energy consumption of the vehicle; a judgment module configured to determine a current state of a hill driving working condition of the vehicle according to the average driving energy consumption, and determine whether the vehicle is in a long downhill mode according to driving distance and atmospheric pressure change information of the vehicle in an uphill state and a downhill state, respectively; and a first control module configured to control the range extender to execute an optimized control strategy corresponding to the long downhill mode when the vehicle is in the long downhill mode.

[0017] Optionally, in an embodiment of the present application, the first control module comprises: a request unit configured to request the range extender to shut down according to a long-time discharge power of the power battery; or a limiting unit configured to limit the maximum power generation power of the range extender to a preset power interval.

[0018] Optionally, in an embodiment of the present application, the acquisition module comprises: an acquisition unit configured to acquire acceleration information, rotation speed information and torque information of the driving motor of the vehicle; a first calculation unit configured to calculate driving power consumed when the vehicle travels at a constant speed according to the acceleration information, the rotation speed information and the torque information; and a second calculation unit configured to calculate the average driving energy consumption according to the driving power consumed when the vehicle travels at a constant speed.

[0019] Optionally, in an embodiment of the present application, the judgment module comprises: a second acquisition unit configured to determine that the current state is the uphill state when the average driving energy consumption is greater than a preset uphill energy consumption, and acquire driving distance and atmospheric pressure change information of the uphill state; and a third acquisition unit configured to determine that the current state is the downhill state when the average driving energy consumption is less than a preset downhill energy consumption, and acquire driving distance and atmospheric pressure change information of the downhill state.

[0020] Optionally, in an embodiment of the present application, further comprising: a detection module, configured to detect whether the average driving energy consumption of the vehicle is greater than the preset downhill energy consumption; and a second control module, configured to control the vehicle to exit the long downhill mode when it is detected that the average driving energy consumption is greater than the preset downhill energy consumption.

[0021] The third aspect of the present application provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the range extender control method of the vehicle according to the above-mentioned embodiments.

[0022] The fourth aspect of the present application provides a computer readable storage medium, having a computer program stored thereon, which is executed by a processor to implement the range extender control method of the vehicle according to the above-mentioned embodiments.

[0023] The beneficial effects of the embodiments of the present application are as follows:

[0024] (1) guarantee the NVH performance of the vehicle and improve the economy of the vehicle;

[0025] (2) make full use of resources, improve the use rate of resources, and achieve the effect of energy saving and emission reduction;

[0026] (3) improve the intelligence of the vehicle, and make the user driving experience more comfortable.

[0027] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above-mentioned and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0029] Figure 1 A flowchart of a range extender control method of a vehicle according to an embodiment of the present application is provided;

[0030] Figure 2 A schematic diagram of the working principle of a range extender control method of a vehicle according to an embodiment of the present application is provided;

[0031] Figure 3 An example diagram of a range extender control device of a vehicle according to an embodiment of the present application is provided;

[0032] Figure 4 A schematic diagram of the structure of a vehicle according to an embodiment of the present application is provided.

[0033] Wherein: 10 - vehicle's range extender control device; 100 - acquisition module, 200 - judgment module, 300 - first control module; 401 - memory, 402 - processor, 403 - communication interface. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0035] The vehicle's range extender control method, device, vehicle and storage medium of the embodiments of the present application are described below with reference to the drawings. For the related technologies mentioned in the above background art, relying on the road information provided by the navigation system, the accuracy of the navigation map is required to be high, the universality is poor, the situation of the change of the road slope is not considered, the application situation is single, and the vehicle is prone to frequent start of the range extender, waste of resources, poor economy, the range extension function cannot work in the case of not starting the navigation, and the driving experience is poor. The present application provides a vehicle's range extender control method, in which the driving condition of the vehicle can be determined according to the average driving energy consumption, and the range extender can be controlled to perform the corresponding optimization control strategy when the vehicle is in the long downhill mode. Without navigation information, it is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver. Thus, the problems such as relying on the road information provided by the navigation system in the related art, requiring high accuracy of the navigation map, poor universality, not considering the situation of the change of the road slope, single application situation, prone to frequent start of the range extender of the vehicle, waste of resources, poor economy, range extension function cannot work in the case of not starting the navigation, and poor driving experience are solved.

[0036] Specifically, Figure 1 A flowchart of a vehicle's range extender control method provided by the embodiments of the present application is shown in the figure.

[0037] As Figure 1 shown, the vehicle's range extender control method comprises the following steps:

[0038] In step S101, the average driving energy consumption of the vehicle is acquired.

[0039] It can be understood that the average driving energy consumption of the vehicle can reflect the size of the power required or the demand for the vehicle, so as to determine the driving condition of the vehicle. Thus, the road to be driven is determined by relying on the navigation information.

[0040] The specific method of acquiring the average driving energy consumption of the vehicle will be described in detail below.

[0041] Optionally, in an embodiment of the present application, the average driving energy consumption of the vehicle is obtained by obtaining acceleration information of the vehicle and rotation speed information and torque information of the driving motor, and calculating the driving power consumed when the vehicle travels at a constant speed according to the acceleration information, the rotation speed information and the torque information, and calculating the average driving energy consumption according to the driving power consumed when the vehicle travels at a constant speed.

[0042] It can be understood that the driving power consumed when the vehicle travels at a constant speed is the driving power consumed after the vehicle travels a distance, which lacks flexibility when used as data support, and therefore the average driving energy consumption is calculated by the driving power consumed when the vehicle travels at a constant speed.

[0043] Here, the specific calculation method of the average driving energy consumption is exemplarily introduced. Specifically, the embodiment of the present application can obtain the acceleration information of the vehicle and the rotation speed information and torque information of the driving motor through the vehicle-mounted sensor, so as to calculate the driving power consumed when the vehicle travels at a constant speed, wherein the calculation method of the driving power consumed when the vehicle travels at a constant speed is as follows.

[0044] P = P mot -P acc = N mot × Tq mot / 9550 × η - M × a × V / 3600

[0045] Wherein, P mot is the driving motor power, P acc is the acceleration or deceleration power consumption, N mot is the driving motor speed, Tq mot is the driving motor torque, η is the driving motor efficiency, M is the vehicle curb weight, a is the vehicle acceleration, and V is the vehicle speed.

[0046] When calculating the average driving energy consumption, the embodiment of the present application can divide the 1km distance into 10 segments, each 100m, calculate the average energy consumption consumed by the vehicle when traveling each 100m, and then add the average energy consumption of the 10 segments to obtain the average driving energy consumption of the vehicle, thereby improving the intelligence of the vehicle and improving the accuracy of the calculation result.

[0047] In step S102, the current state of the vehicle in the hill driving working condition is determined according to the average driving energy consumption, and whether the vehicle is in the long downhill mode is judged according to the driving distance and the atmospheric pressure change information when the current state is the uphill state and the downhill state, respectively.

[0048] It can be understood that when the vehicle is in the long downhill mode, the driver's throttle is small, the vehicle's demand power is also small, and most of the time is in the energy recovery state, and it is easy to occur that the vehicle is in the sliding state when the driver releases the throttle, and the range extender is still in high-power power generation, so it is necessary to accurately identify the long downhill mode to improve the driving experience of the driver.

[0049] For example, the embodiment of the present application can record the vehicle uphill mileage S up , uphill atmospheric pressure P1 baro , vehicle uphill mileage S down and downhill atmospheric pressure P2 baro through VCU (Vehicle Control Unit, vehicle controller) when the uphill state and downhill state are activated respectively, and store them in the controller. The values are reset to 0 after the uphill state and the downhill state are exited. When the mileage difference ΔS = S down -S up ≥a and the atmospheric pressure difference ΔP bar =P1 baro -P2 baro ≥b, it is judged that the vehicle is in the long downhill mode, which improves the intelligence of the vehicle and improves the driving experience of the user.

[0050] The method for determining the current state of the vehicle's uphill driving working condition according to the average driving energy consumption will be described in detail below.

[0051] Optionally, in an embodiment of the present application, the method for determining the current state of the vehicle's uphill driving working condition according to the average driving energy consumption comprises: when the average driving energy consumption is greater than a preset uphill energy consumption, determining that the current state is the uphill state, and obtaining the driving distance and atmospheric pressure change information of the uphill state; when the average driving energy consumption is less than a preset downhill energy consumption, determining that the current state is the downhill state, and obtaining the driving distance and atmospheric pressure change information of the downhill state.

[0052] It can be understood that the preset uphill energy consumption and the preset downhill energy consumption are the thresholds for the vehicle to be in uphill driving and downhill driving, which can be calibrated according to different vehicle speeds in actual road test, or can be calibrated by relevant technical personnel in the field according to actual conditions, which is not limited here.

[0053] In this case, the method for determining the current state of the vehicle in the hill driving mode according to the average driving energy consumption is exemplified. When the average energy consumption of the vehicle in actual 1km uniform driving is greater than the uphill calibration value, it is determined that the vehicle is in uphill driving, the uphill state is activated, and the state is stored in the controller when the vehicle is powered off and hibernates. When the average energy consumption of the vehicle in actual 1km uniform driving is less than the downhill driving calibration value, it is determined that the vehicle is in downhill driving, the downhill state is activated, and the state is stored in the controller when the vehicle is powered off and hibernates. At the same time, in the uphill state and the downhill state, the driving distance and the atmospheric pressure change information of the uphill state and the downhill state can be obtained, thereby providing data support for subsequent identification of the long downhill mode, making the user driving experience more comfortable, and the vehicle intelligent level higher.

[0054] In step S103, if the vehicle is in the long downhill mode, the range extender is controlled to execute the optimization control strategy corresponding to the long downhill mode.

[0055] It can be understood that, by controlling the range extender to execute the optimization control strategy corresponding to the long downhill mode, the problem that the battery power is reduced to a low state after the vehicle drives uphill, and the range extender discharges at high power after the vehicle drives from the long uphill to the long downhill can be solved, and the problems of NVH, economy and driving experience of the vehicle in the long downhill process can be avoided.

[0056] In actual execution, the embodiment of the present application can control the range extender to execute the optimization control strategy corresponding to the long downhill mode when the vehicle is in the long downhill mode, improve the intelligent level of the vehicle, increase the driving experience of the user, and improve the utilization rate of resources.

[0057] Optionally, in an embodiment of the present application, the control of the range extender to execute the optimization control strategy corresponding to the long downhill mode comprises: requesting the range extender to stop according to the long-time discharge power of the battery; or limiting the maximum power generation of the range extender to a preset power interval.

[0058] It can be understood that, in the long downhill mode, the demand power of the vehicle is small, and the range extender can be stopped to ensure the NVH and economy of the vehicle.

[0059] Specifically, after the long downhill mode is activated, when the long-time discharge power P batt of the battery is greater than a certain value c, and the vehicle speed is greater than a certain value such as 10KM / h, the VCU requests the engine to stop. When the long-time discharge power P batt of the battery is less than the certain value c, the VCU can not request the engine to stop, but limits the maximum power generation of the range extender, and the maximum power generation is set according to different vehicle speeds. The set value c of the long-time discharge power P batt of the battery can be calibrated and set according to the power performance of the vehicle when driving downhill.

[0060] The embodiment of the present application can control the range extender to execute the optimized control strategy corresponding to the long downhill mode, thereby improving the intelligence of the vehicle, enhancing the user's driving experience, and improving resource utilization.

[0061] Optionally, in one embodiment of the present application, after controlling the range extender to execute the optimization control strategy corresponding to the long downhill mode, it also includes: detecting whether the average driving energy consumption of the vehicle is greater than the preset downhill energy consumption; when it is detected that the average driving energy consumption is greater than the preset downhill energy consumption, controlling the vehicle to exit the long downhill mode.

[0062] It is understandable that the preset downhill energy consumption may be the average energy consumption during downhill driving, and may also be set by relevant technicians in this field according to actual conditions, and is not specifically limited here.

[0063] For example, the embodiment of the present application can detect the average driving energy consumption of the vehicle through on-board sensors. When it is detected that the average driving energy consumption of the vehicle is greater than a certain downhill energy consumption, such as the average energy consumption of downhill driving, the vehicle can exit the long downhill mode, thereby improving the intelligence of the vehicle, achieving the effect of energy saving and consumption reduction, and enhancing the user's driving experience.

[0064] Combine Figure 2 and Figure 3 As shown, the working principle of the vehicle management method based on the car style of the embodiment of the present application is described in detail with an embodiment. Figure 2 As shown, the steps are:

[0065] Step S201: Calculate the driving power consumption of the vehicle when it is traveling at a constant speed. The calculation method of the driving motor power consumption when traveling at a constant speed is as follows:

[0066] P=P mot -P acc =N mot ×Tq mot / 9550×η-M×a×V / 3600

[0067] Among them, P mot is the driving motor power, P acc Power consumed for acceleration or deceleration, N mot is the driving motor speed, Tq mot is the driving motor torque, η is the driving motor efficiency, M is the vehicle curb mass, a is the vehicle acceleration, and V is the vehicle speed.

[0068] Step S202: Calculate the average energy consumption per kilometer during uniform vehicle travel, wherein the specific calculation method is to divide the 1km distance into 10 segments, each 100m, and calculate the average energy consumption of the vehicle during each 100m travel, and then add the average energy consumption of the 10 segments to obtain the average energy consumption of the vehicle per 1km travel.

[0069] Step S203: Calibrate the threshold value of the vehicle in uphill and downhill travel, which is calibrated according to different vehicle speeds in actual road test. Determine whether the vehicle is in uphill travel, when the actual 1km average energy consumption of the vehicle during uniform travel is greater than the above calibrated value, it is determined that the vehicle is in uphill travel, the uphill state is activated, and the state is stored in the controller when the vehicle is powered off and hibernates.

[0070] Step S204: When the uphill state is activated, the VCU records the vehicle mileage S up and the atmospheric pressure P1 baro at this time, when the vehicle is powered off, P1 baro and S up are stored in the controller, and when the uphill state is exited, the value is reset to 0.

[0071] Step S205: Determine whether the vehicle is in downhill travel, when the actual 1km average energy consumption of the vehicle during uniform travel is less than the above calibrated value, it is determined that the vehicle is in downhill travel, the downhill state is activated, and the state is stored in the controller when the vehicle is powered off and hibernates.

[0072] Step S206: When the downhill state is activated, the VCU records the vehicle mileage S down and the atmospheric pressure P2 baro at this time, when the vehicle is powered off, P2 baro and S down are stored in the controller, and when the downhill state is exited, the value is reset to 0.

[0073] Step S207: Calculate whether the vehicle needs to be stopped: when the mileage difference ΔS = S down -S up ≥a and the atmospheric pressure difference ΔP bar =P1 baro -P2 baro ≥b, the long downhill mode is activated.

[0074] Step S208: After the long downhill mode is activated, when the long-time discharge power P batt of the battery ≥c and the vehicle speed is greater than a certain value, the VCU requests the engine to stop. When the long-time discharge power P batt of the battery is set to a value c, the calibration is set according to the power performance of the vehicle during downhill travel.

[0075] Step S209: After the long downhill mode is activated, the battery long-time discharge power P batt <c, VCU does not request engine stop, but limits the maximum power generation of the range extender, and the maximum power generation is set according to different vehicle speeds.

[0076] wherein when the average energy consumption of the vehicle is greater than the average energy consumption of the downhill driving, the long downhill mode of the vehicle is activated and exited.

[0077] According to the range extender control method of the vehicle provided in the embodiments of the present application, the driving working condition of the vehicle can be determined according to the average driving energy consumption, and the range extender can be controlled to perform the corresponding optimization control strategy when the vehicle is in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver. Therefore, the problems in the related art that the road information provided by the navigation system is relied on, the accuracy of the navigation map is required to be high, the universality is poor, the case of changing road slope is not considered, the application emotion is single, the range extender of the vehicle is easily started frequently, resources are wasted, the economy is poor, the range extension function cannot work in the case of not starting the navigation, and the driving experience is poor are solved.

[0078] Secondly, the range extender control device of the vehicle according to the embodiments of the present application is described with reference to the accompanying drawings.

[0079] Figure 3 is a block schematic diagram of the range extender control device of the vehicle in the embodiments of the present application.

[0080] As Figure 3 shown, the range extender control device 10 of the vehicle includes an acquisition module 100, a judgment module 200, and a first control module 300.

[0081] Specifically, the acquisition module 100 is configured to acquire the average driving energy consumption of the vehicle.

[0082] The judgment module 200 is configured to determine the current state of the slope driving working condition of the vehicle according to the average driving energy consumption, and determine whether the vehicle is in the long downhill mode according to the driving distance and the atmospheric pressure change information when the current state is the uphill state and the downhill state respectively.

[0083] The first control module 300 is configured to control the range extender to perform the optimization control strategy corresponding to the long downhill mode when the vehicle is in the long downhill mode.

[0084] Optionally, in an embodiment of the present application, the first control module 300 includes a request unit or a limiting unit.

[0085] The request unit is configured to request the range extender to stop according to the battery long-time discharge power of the power battery.

[0086] Alternatively, the limiting unit is configured to limit the maximum power generation of the range extender to a preset power range.

[0087] Optionally, in an embodiment of the present application, the obtaining module comprises a first obtaining unit, a first calculating unit and a second calculating unit.

[0088] The obtaining unit is configured to obtain acceleration information of the vehicle and rotational speed information and torque information of the drive motor.

[0089] The first calculating unit is configured to calculate the driving power consumed by the vehicle when running at a constant speed according to the acceleration information, the rotational speed information and the torque information.

[0090] The second calculating unit is configured to calculate the average driving energy consumption according to the driving power consumed when running at a constant speed.

[0091] Optionally, in an embodiment of the present application, the judging module comprises a second obtaining unit and a third obtaining unit.

[0092] The second obtaining unit is configured to determine that the current state is the uphill state when the average driving energy consumption is greater than a preset uphill energy consumption, and obtain driving distance and atmospheric pressure change information of the uphill state.

[0093] The third obtaining unit is configured to determine that the current state is the downhill state when the average driving energy consumption is less than a preset downhill energy consumption, and obtain driving distance and atmospheric pressure change information of the downhill state.

[0094] Optionally, in an embodiment of the present application, the range extender control device 10 of the vehicle further comprises a detecting module and a second control module.

[0095] The detecting module is configured to detect whether the average driving energy consumption of the vehicle is greater than the preset downhill energy consumption.

[0096] The second control module is configured to control the vehicle to exit the long downhill mode when it is detected that the average driving energy consumption is greater than the preset downhill energy consumption.

[0097] It should be noted that the foregoing explanation and description of the embodiment of the range extender control method of the vehicle also apply to the range extender control device of the vehicle, which will not be described here.

[0098] According to the vehicle range extender control device provided by the embodiment of the present application, the driving condition of the vehicle can be determined according to the average driving energy consumption, and the range extender can be controlled to perform the corresponding optimization control strategy when the vehicle is in the long downhill mode, without navigation information, which is more reliable, improves the NVH performance of the vehicle, improves the economy of the vehicle, and improves the driving experience of the driver. Therefore, the problems in the related art that the road information provided by the navigation system is relied on, the accuracy of the navigation map is required to be high, the universality is poor, the case that the road slope does not change is not considered, the application situation is single, the range extender of the vehicle is easily started frequently, resources are wasted, the economy is poor, the range extension function cannot work in the case that the navigation is not started, and the driving experience is poor are solved.

[0099] Figure 4 The vehicle provided by the embodiment of the present application is shown in the structural schematic diagram. The vehicle can include:

[0100] The memory 401, the processor 402, and the computer program stored in the memory 401 and executable on the processor 402.

[0101] The processor 402 implements the range extender control method of the vehicle provided in the above embodiment when executing the program.

[0102] Further, the vehicle further includes:

[0103] The communication interface 403 is used for communication between the memory 401 and the processor 402.

[0104] The memory 401 is used to store the computer program executable on the processor 402.

[0105] The memory 401 can include a high-speed RAM (Random Access Memory, random access memory) memory, and can also include a non-volatile memory, for example, at least one disk memory.

[0106] If the memory 401, the processor 402 and the communication interface 403 are independently implemented, the communication interface 403, the memory 401 and the processor 402 can be connected with each other through a bus and complete the communication between each other. The bus can be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, peripheral component interconnect) bus or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 4 In the figure, only one thick line is used to represent, but it does not mean that there is only one bus or one type of bus.

[0107] Optionally, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can complete the communication among each other through an internal interface.

[0108] The processor 402 can be a CPU (Central Processing Unit, central processor), or an ASIC (Application Specific Integrated Circuit, specific integrated circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0109] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the range extender control method of the vehicle.

[0110] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0111] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0112] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing one or N steps of a computer readable medium comprising executable instructions for performing custom logic functions or processes, and the scope of preferred embodiments of the present application includes additional implementation in which the functions described are performed in an order different from that shown or discussed, including functions performed in substantially simultaneous, or in reverse order, as will be understood by those skilled in the art of the present application.

[0113] The logic and / or steps represented in the flowcharts and / or described herein, for example, can be considered as a sequence of executable instructions stored in a computer readable medium, which can be executed by an instruction execution system, apparatus or device, such as a computer-based system, a processor-based system, or other system that can fetch the instructions from the instruction execution system, apparatus or device and execute the instructions, or a combination of them. For the purposes of this specification, a "computer readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus or device. The computer readable medium can be a computer readable storage medium or a computer readable signal medium. The computer readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a propagation medium. The computer readable signal medium can include, but is not limited to, a computer readable medium that facilitates transfer of the program from one place to another. A specific example of a computer readable medium is a non-transitory computer-readable storage medium. A specific example of a computer readable signal medium is a source or destination of the computer readable medium. Another specific example of a computer readable signal medium is a computer readable signal travelling through space. Thus, a computer readable medium can take many forms of hardware to carry out the program for use by or in connection with the instruction execution system, apparatus or device.

[0114] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As such, if implemented in hardware, and in another embodiment, any of the following technologies, known in the art, or their combinations can be used: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0115] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium. When the programs are executed, one or a combination of the steps of the method embodiments is included.

[0116] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing module, or each of the units can be physically present separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0117] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A vehicle range extender control method, characterized in that: The following steps are involved: Obtain the average driving energy consumption of the vehicle; determining a current state of the vehicle's hill driving condition based on the average driving energy consumption, and determining whether the vehicle is in a long downhill mode based on the driving distance and atmospheric pressure change information when the current state is an uphill state and a downhill state, respectively; as well as If the vehicle is in the long downhill mode, controlling the range extender to execute the optimized control strategy corresponding to the long downhill mode; The controlling the range extender to execute the optimization control strategy corresponding to the long downhill mode includes: Requesting the range extender to shut down based on the long-term discharge power of the power battery; Alternatively, the maximum power generation power of the range extender is limited to a preset power range; After controlling the range extender to execute the optimization control strategy corresponding to the long downhill mode, the method further includes: detecting whether the average driving energy consumption of the vehicle is greater than a preset downhill energy consumption; When the energy consumption of the downhill slope is detected to be greater than the preset energy consumption, the vehicle is controlled to exit the long downhill mode.

2. The method according to claim 1, characterized in that The obtaining of the average driving energy consumption of the vehicle includes: Acquiring acceleration information of the vehicle and speed information and torque information of the drive motor; Calculating the driving power consumed by the vehicle when traveling at a constant speed based on the acceleration information, the speed information, and the torque information; The average driving energy consumption is calculated according to the driving power consumed during the uniform speed driving.

3. The method according to claim 1, characterized in that The determining the current state of the vehicle's hill driving condition based on the average driving energy consumption includes: When the average driving energy consumption is greater than a preset uphill energy consumption, determining that the current state is the uphill state, and obtaining the driving distance and atmospheric pressure change information in the uphill state; When the average driving energy consumption is less than the preset downhill energy consumption, the current state is determined to be the downhill state, and the driving distance and atmospheric pressure change information in the downhill state are obtained.

4. A range extender control device for a vehicle, characterized in that: include: An acquisition module, used to obtain the average driving energy consumption of the vehicle; a judgment module, configured to determine a current state of the vehicle's hill driving condition based on the average driving energy consumption, and to determine whether the vehicle is in a long downhill mode based on the driving distance and atmospheric pressure change information when the current state is an uphill state or a downhill state, respectively; as well as a first control module, configured to control the range extender to execute an optimized control strategy corresponding to the long downhill mode when the vehicle is in the long downhill mode; The first control module includes: A requesting unit, configured to request the range extender to stop according to the long-term discharge power of the power battery; Alternatively, a limiting unit is used to limit the maximum power generation power of the range extender to a preset power interval; After controlling the range extender to execute the optimization control strategy corresponding to the long downhill mode, the method further includes: detecting whether the average driving energy consumption of the vehicle is greater than a preset downhill energy consumption; When the energy consumption of the downhill slope is detected to be greater than the preset energy consumption, the vehicle is controlled to exit the long downhill slope mode.

5. The device according to claim 4, characterized in that The acquisition module includes: an acquisition unit, configured to acquire acceleration information of the vehicle and speed information and torque information of the drive motor; a first calculation unit, configured to calculate the driving power consumed by the vehicle when traveling at a constant speed based on the acceleration information, the speed information, and the torque information; The second calculation unit is used to calculate the average driving energy consumption according to the driving power consumed during the uniform speed driving.

6. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle range extender control method according to any one of claims 1 to 3.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vehicle range extender control method according to any one of claims 1 to 3.

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