Range extender cooling control method, device, terminal equipment and storage medium

Abstract

The present application provides a range extender cooling control method, device, terminal equipment and storage medium, which are applicable to the field of new energy vehicle technology. The method includes: obtaining mileage information, current power generation information, coolant temperature, and target mileage information; calculating the current average power generation according to the mileage information and the current power generation information; when the target mileage information is greater than zero, and the current average power generation is greater than the preset average power generation threshold, determining the cooling threshold interval information according to the mileage information, the preset high-temperature driving time threshold, the target mileage information, and the mileage information; cooling the range extender according to the cooling threshold interval information and the coolant temperature. The present application can identify the operating temperature rise state of the range extender in advance for different road conditions and perform heat dissipation treatment when the driver has a clear target mileage, thereby reducing fuel consumption and increasing system life.

Description

Technical Field

[0001] The present application belongs to the field of new energy vehicle technology, and in particular, relates to a range extender cooling control method, device, terminal equipment and storage medium. Background Art

[0002] Extended-range electric vehicles are a type of vehicle that can achieve all of its power performance in pure electric mode. When the energy storage system cannot meet the range requirements, there are problems such as limited range and long charging time. Extended-range vehicles just solve these problems. Not only can you enjoy a pollution-free and quiet driving experience when driving purely on electric power in urban areas, you can also flexibly switch to fuel mode on highways, eliminating range anxiety. Refueling is also much faster than charging, becoming a highlight in the development of new energy vehicles.

[0003] However, when a range-extended electric vehicle is fully loaded and travels long distances in a high-temperature environment, the engine will be operating at high power for a long time, causing the engine water temperature to remain high for a long time. While meeting the power requirements of the vehicle climbing, the reduction in vehicle speed causes the air temperature used by the engine cooling system in the vehicle to increase, further causing the cooling effect to deteriorate. The continued high temperature in the engine cylinder will cause the vehicle's expansion kettle to overflow, causing the engine cylinder components to be damaged by high temperature. Therefore, it is very necessary to cool the range extender during full-load driving.

[0004] In the prior art, a vehicle range extender generally sets a fixed cooling threshold. When the temperature of the coolant in the vehicle is not less than the fixed cooling threshold, the range extender is cooled by a water pump and a fan. However, the actual road conditions are diverse. Under different road conditions, the timing and requirements for heat dissipation of the range extender are different, and therefore the required cooling threshold is also different. The fixed cooling threshold lacks flexibility and timeliness, and cannot achieve the best effect of vehicle heat dissipation. Summary of the invention

[0005] In view of this, the embodiments of the present application provide a range extender cooling control method, device, terminal equipment and storage medium, which can set multiple dynamic thresholds so that the range extender of the extended-range vehicle can be cooled in advance under different road conditions, effectively shortening the high-temperature operation time of the range extender, thereby reducing the safety hazards caused by excessive temperature of the range extender.

[0006] A first aspect of an embodiment of the present application provides a range extender cooling control method, comprising:

[0007] Calculate target mileage information according to mileage values ​​pointed to by pointers of multiple mileage adjustment knobs of the vehicle;

[0008] Obtain mileage information, current power generation information, and coolant temperature;

[0009] Calculating the current average power generation according to the mileage information and the current power generation information;

[0010] When the target mileage information is greater than zero and the current average power generation is greater than a preset average power generation threshold, a high-temperature driving mileage threshold is calculated according to the traveled mileage information and a preset high-temperature driving time threshold;

[0011] Determining cooling threshold interval information according to the target mileage information, the traveled mileage information, and the high-temperature travel mileage threshold;

[0012] The range extender is cooled according to the cooling threshold interval information and the coolant temperature.

[0013] A second aspect of an embodiment of the present application provides a range extender cooling control device, comprising:

[0014] A target mileage information calculation module, used to calculate the target mileage information according to the mileage values ​​pointed to by the pointers of multiple mileage adjustment knobs of the vehicle;

[0015] A driving information acquisition module is used to obtain the mileage information, current power generation information and coolant temperature;

[0016] A current average power generation calculation module, used to calculate the current average power generation according to the mileage information and the current power generation information;

[0017] a high-temperature driving mileage threshold calculation module, configured to calculate the high-temperature driving mileage threshold according to the mileage information and a preset high-temperature driving time threshold when it is determined that the target mileage information is greater than zero and when the current average power generation is greater than a preset average power generation threshold;

[0018] A cooling threshold interval information determination module, used to determine the cooling threshold interval information according to the target mileage information, the traveled mileage information and the high-temperature travel mileage threshold;

[0019] The cooling processing module is used to cool the range extender according to the cooling threshold interval information and the coolant temperature.

[0020] A third aspect of an embodiment of the present application provides a terminal device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the range extender cooling control method as described in any one of the first aspects above are implemented.

[0021] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, comprising: a computer program stored therein, wherein when the computer program is executed by a processor, the steps of the range extender cooling control method as described in any one of the first aspects above are implemented.

[0022] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the average power generation of the vehicle during driving is determined according to the target mileage, mileage traveled and current power generation of the extended-range vehicle, and then whether the range extender is in a high temperature condition is judged according to the relationship between the average power generation and a preset average power generation threshold, and then the high-temperature mileage threshold is calculated, and the cooling threshold interval of the coolant is determined according to the target mileage, mileage traveled and the high-temperature mileage threshold, and then the range extender is cooled according to the temperature of the coolant and the cooling threshold interval, so that the cooling work can be automatically controlled based on the target mileage, reducing the time that the range extender of the extended-range vehicle may be in a high-temperature state under different road conditions, and optimizing the performance and fuel consumption of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0027] Figure 4 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0029] Figure 6 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the implementation flow of the range extender cooling control method provided in an embodiment of the present application;

[0031] Figure 8 is a schematic structural diagram of a range extender cooling control device provided in an embodiment of the present application;

[0032] Fig. 9 It is a schematic diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0034] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0035] Figure 1 The following is a flowchart of the range extender cooling control method provided in the first embodiment of the present application, which is described in detail as follows:

[0036] Step S101, calculating target mileage information according to the mileage values ​​pointed to by the pointers of multiple mileage adjustment knobs of the automobile.

[0037] In this embodiment, the multiple mileage adjustment knobs refer to manual mileage knobs in the extended-range vehicle. The multiple manual mileage knobs correspond to different mileage switch selections, and different target mileage information can be set through the manual mileage knobs. The mileage values ​​corresponding to the pointers of the multiple manual mileage knobs can be added together to obtain the target mileage information. The target mileage information is used to indicate the mileage that the extended-range vehicle plans to travel.

[0038] Step S102, obtaining the mileage information, the current power generation information and the coolant temperature.

[0039] In this embodiment, the mileage information is used to indicate the mileage that the extended-range vehicle has traveled out of the planned mileage, which can be calculated by the diameter of the wheel and the number of rotations of the wheel measured by the sensor, or it can refer to one or more kilometers that have been traveled, which is used for subsequent calculation of the average power generation per kilometer. The current power generation information can be first detected by the sensor at each moment of the range extender, and then the current power generation of the previous kilometer is calculated by the accumulated power generation of the previous kilometer and the number of kilometers traveled, and the current power generation of the previous kilometer is used as the current power generation information. The coolant temperature can be measured by the temperature sensor in the cooling system of the extended-range vehicle.

[0040] Step S103, calculating the current average power generation according to the mileage information and the current power generation information.

[0041] In this embodiment, the current cumulative power generation of the previous kilometer can be divided by the mileage information, where the mileage information can be one kilometer, to obtain the current average power generation of the previous kilometer, wherein the current cumulative power generation of the previous kilometer is the current power generation information, and the current average power generation of the previous kilometer is the current average power generation. It can be understood that the current power generation information is updated after each kilometer traveled. The current average power generation is used for subsequent comparison with the artificially set average power generation threshold to determine whether the current range extender is in a high-temperature operation state, or is about to be in a high-temperature operation state.

[0042] Step S104, determine whether the target mileage information is greater than zero, and whether the current average power generation is greater than a preset average power generation threshold. If so, calculate the high-temperature driving mileage threshold based on the mileage information and the preset high-temperature driving time threshold; if not, determine whether the current average power generation is greater than the preset average power generation threshold.

[0043] In this embodiment, it is determined whether the target mileage information is greater than zero. When the target mileage is greater than zero, it means that the user has successfully input the target mileage information through the manual knob. Subsequently, the high-temperature driving mileage threshold is calculated based on the target mileage information, and the target mileage information is introduced to adaptively control the cooling process of the range extender. When the target mileage is equal to zero, it means that the user has not input the target mileage information through the manual knob, or the user has not successfully input the target mileage information through the manual knob, then it is not necessary to determine whether the current average power generation is greater than the preset average power generation threshold, and the heat dissipation is directly controlled according to the coolant water temperature.

[0044] Step S105 , determining cooling threshold interval information according to the target mileage information, the traveled mileage information and the high-temperature travel mileage threshold.

[0045] In this embodiment, the remaining mileage information can be obtained by first calculating the difference between the target mileage information and the mileage information, and then the remaining mileage information is compared with the high-temperature mileage threshold to determine whether the current range extender can complete the target mileage when it is in a high-temperature state or is about to be in a high-temperature state. If the current high-temperature operation state of the range extender cannot complete the target mileage, it is necessary to determine the cooling measures that need to be taken for the range extender based on the cooling threshold interval and the current coolant temperature. Among them, the cooling threshold interval information can be set manually, and different cooling measures can be taken for the range extender by judging whether the current coolant temperature falls within the cooling threshold interval.

[0046] Step S106: Cooling the range extender according to the cooling threshold interval information and the coolant temperature.

[0047] In this embodiment, it is possible to determine whether the current coolant temperature falls within the cooling threshold interval, thereby determining the cooling measure that best suits the current operating state of the range extender according to the current coolant temperature, so as to cool the range extender.

[0048] The range extender cooling control method provided in the embodiment of the present application determines the average power generation of the vehicle in the last kilometer during driving according to the target mileage, mileage traveled and current power generation of the extended-range vehicle, and then determines whether the range extender is in a high temperature condition through the relationship between the average power generation and a preset average power generation threshold, and then calculates the high-temperature mileage threshold, determines the cooling threshold interval of the coolant through the target mileage, mileage traveled and the high-temperature mileage threshold, and then cools the range extender according to the temperature of the coolant and the cooling threshold interval, so that the cooling work can be automatically controlled based on the target mileage, reducing the time that the range extender of the extended-range vehicle may be in a high-temperature state under different road conditions, and optimizing the performance and fuel consumption of the entire vehicle.

[0049] Figure 2 The flowchart of the range extender cooling control method provided in the second embodiment of the present application is shown. The difference between the second embodiment and the first embodiment is that the high temperature driving mileage threshold is calculated according to the mileage information and the preset high temperature driving time threshold in step S104, which specifically includes:

[0050] Step S201, obtaining the travel time information.

[0051] In this embodiment, the travel time indicates the time taken by the extended-range vehicle to travel one kilometer.

[0052] Step S202: obtaining an average driving speed according to the traveled mileage information and the travel time information.

[0053] In this embodiment, the average driving speed for the last kilometer can be obtained by dividing the traveled mileage by the traveled time, which can be used to calculate the high-temperature driving mileage threshold of the range extender that is in a high-temperature operating state or is about to be in a high-temperature operating state.

[0054] Step S203, obtaining a high-temperature driving mileage threshold value according to the average driving speed and a preset high-temperature driving time threshold value.

[0055] In this embodiment, the high-temperature driving mileage threshold can be obtained by multiplying the average driving speed with the artificially set high-temperature driving time threshold, which is used to subsequently determine the cooling threshold interval of the coolant, and then determine the cooling measures suitable for the current operating state of the range extender.

[0056] The range extender cooling control method provided in the embodiment of the present application calculates a high-temperature driving mileage threshold through the mileage traveled, the driving time, and a pre-set high-temperature driving time threshold, which is used for subsequent comparison with the current temperature of the coolant, so as to determine the cooling measures suitable for the current operating state of the range extender to cool the range extender, shorten the operating time of the range extender in the high-temperature state, and improve the safety and reliability of the extended-range vehicle during operation.

[0057] Figure 3 The flowchart of the implementation of the range extender operation safety monitoring method provided in the third embodiment of the present application is shown. The difference between the third embodiment and the first embodiment is that the step S105 specifically includes:

[0058] Step S301, calculating the difference between the target mileage information and the traveled mileage information to obtain remaining mileage information.

[0059] In this embodiment, the remaining mileage information is obtained by subtracting the target mileage from the mileage traveled, which is used for comparison with the high-temperature driving mileage threshold in subsequent calculations to determine whether the target mileage driving task can be completed under the current high-temperature state of the range extender.

[0060] Step S302, determining whether the remaining mileage information is less than the high-temperature driving mileage threshold, if so, proceeding to step S303; if not, proceeding to step S304.

[0061] In this embodiment, when the remaining mileage value is less than the high-temperature driving mileage threshold, it means that the range extender can complete the target mileage driving task with its own capacity under the current cooling system operating state. When the remaining mileage value is greater than the high-temperature driving mileage threshold, it means that the range extender is difficult to complete the target mileage driving task under the current operating state. It is very easy to cause damage to various parts of the car due to the high-temperature operation of the range extender, so the range extender should be cooled in advance.

[0062] Step S303: determine the cooling threshold interval information as a first-level cooling threshold interval.

[0063] In this embodiment, when the remaining mileage value is less than the high-temperature driving mileage threshold, it means that the range extender can complete the target mileage driving task with its own capacity under the current cooling system operating state. Therefore, the first-level cooling threshold can be set to a higher cooling threshold, so that the coolant temperature does not easily fall into the first-level cooling threshold interval, and it is not easily determined that cooling measures need to be taken for the range extender, so as to save energy consumption for cooling the range extender.

[0064] Step S304: determine the cooling threshold interval information as a second-level cooling threshold interval.

[0065] In this embodiment, when the remaining mileage value is greater than the high-temperature driving mileage threshold, it means that the range extender is difficult to complete the target mileage driving task under the current operating state, and it is very easy to cause damage to various parts in the car due to the high-temperature operation of the range extender. Therefore, the second-level cooling threshold interval can be set to a lower cooling threshold, so that the coolant temperature is easy to fall within the second-level cooling threshold interval, so as to cool the range extender in time to avoid damage to other parts in the car due to the long-term high-temperature operation of the range extender.

[0066] Step S305: Cooling the range extender according to the first-level cooling threshold interval, the second-level cooling threshold interval, and the coolant temperature.

[0067] In this embodiment, when the coolant temperature falls into different cooling threshold intervals, different cooling measures are taken for the range extender, thereby shortening the operating time of the range extender under high temperature conditions and avoiding the negative impact on the performance of the entire vehicle due to long-term high-temperature operation of the range extender.

[0068] The range extender cooling control method provided in the embodiment of the present application sets different cooling threshold intervals to adapt to the current operating state of the range extender, thereby determining cooling measures for the range extender by judging whether the coolant temperature falls within the cooling threshold interval. This method is used to save cooling resources for the range extender when the range-extended vehicle is driving at high temperature for a short distance or the power generation is small. When the range-extended vehicle is driving at high temperature for a long distance or the power generation is large, cooling measures are taken on the range extender in a timely manner to shorten the operating time of the range extender under high temperature conditions, thereby reducing the probability of failure of the range extender and improving the safety and reliability of the range-extended vehicle during operation.

[0069] Figure 4 The flowchart of the range extender operation safety monitoring method provided in the fourth embodiment of the present application is shown. The difference between the fourth embodiment and the third embodiment is that the step S305 specifically includes:

[0070] Step S401, determine whether the cooling threshold interval information is the first-level cooling threshold interval. If so, when the coolant temperature is greater than the first cooling threshold and the coolant temperature is less than the second cooling threshold, enter step S402; when the coolant temperature is greater than the second cooling threshold, enter step S403; if not, enter step S404.

[0071] In this embodiment, when the cooling threshold interval information is the first level cooling threshold interval, it indicates that the range extender needs to travel a short distance under high temperature. When the coolant temperature is less than the first cooling threshold, it indicates that the current range extender has sufficient capacity to safely complete the target mileage driving task, and the water pump and fan are controlled not to run. When the cooling threshold interval information is the second level cooling threshold interval, it indicates that the range extender needs to travel a long distance under high temperature, and a high-intensity cooling measure needs to be taken for the range extender to ensure the driving safety of the extended-range vehicle.

[0072] Step S402, controlling the water pump to run at a low speed and the fan to run at a low gear.

[0073] In this embodiment, when the coolant temperature is greater than the first cooling threshold but less than the second cooling threshold, it indicates that the current range extender does not need high-intensity cooling treatment, so the water pump and fan of the range extender vehicle are controlled to run at low speed and low gear. When the water pump runs at low speed, the motor speed of the water pump is about 600-1000 rpm. When the fan runs at low gear, the fan speed is about 850 rpm.

[0074] Step S403, controlling the water pump to run at high speed and the fan to run at high speed.

[0075] In this embodiment, when the coolant temperature is greater than the second cooling threshold, it indicates that the current range extender needs to be cooled with a higher intensity to shorten the operation time in the high temperature state. When the water pump runs at high speed, the motor speed of the water pump is about 1000-1500 rpm. When the fan runs at high speed, the fan speed is about 1000 rpm.

[0076] Step S404, determine whether the coolant temperature is greater than the third cooling threshold, if not, control the water pump and the fan not to run; if yes, when it is determined that the coolant temperature is less than the fourth cooling threshold, enter step S405, when it is determined that the coolant temperature is greater than the fourth cooling threshold, enter step S406.

[0077] In this embodiment, when the cooling threshold interval information is the second level cooling threshold interval, it indicates that the range extender needs to travel a long distance under high temperature, and a high intensity cooling measure needs to be taken for the range extender. Among them, the first cooling threshold, the second cooling threshold, the third cooling threshold, and the fourth cooling threshold can all be set manually.

[0078] Step S405, controlling the water pump to run at a low speed and the fan to run at a low gear.

[0079] In this embodiment, when the coolant temperature is greater than the third cooling threshold but less than the fourth cooling threshold, it indicates that the current range extender does not need high-intensity cooling treatment, so the water pump and fan of the range extender vehicle are controlled to run at low speed. When the water pump runs at low speed, the motor speed of the water pump is about 600-1000 rpm. When the fan runs at low speed, the fan speed is about 850 rpm.

[0080] Step S406, controlling the water pump to run at high speed and the fan to run at high speed.

[0081] In this embodiment, when the coolant temperature is greater than the fourth cooling threshold, it indicates that the current range extender needs to be cooled with a higher intensity to shorten the operation time in the high temperature state. When the water pump runs at high speed, the motor speed of the water pump is about 1000-1500 rpm. When the fan runs at high speed, the fan speed is about 1000 rpm.

[0082] The range extender cooling control method provided in the embodiment of the present application determines the cooling threshold interval currently used to determine the cooling measures, and then determines the cooling measures to be taken for the range extender according to the relationship between each cooling threshold and the current coolant temperature, thereby shortening the working time of the range extender under high temperature conditions and reducing the performance degradation caused by excessive temperature of the range extender.

[0083] Figure 5 The flowchart of the implementation of the range extender operation safety monitoring method provided in the fifth embodiment of the present application is shown. The difference between the fifth embodiment and the first embodiment is that after the step S305, the method further includes:

[0084] Step S501, obtaining actual power generation information and actual mileage information after the range extender is cooled.

[0085] In this embodiment, the actual power generation information after the range extender is cooled can be obtained by calculating the product of the power generation at each moment and the operation time of the range extender, or can be directly read through the background. The actual mileage information includes the mileage that the range extender has traveled before cooling and the mileage that the range extender has traveled after cooling.

[0086] Step S502: Calculate the actual average power generation according to the actual power generation information and the actual mileage information.

[0087] In this embodiment, the actual average power generation per kilometer can be calculated by dividing the actual power generation by the actual mileage, and the actual average power generation per kilometer can be used as the actual average power generation for subsequent judgment on whether the range extender is currently in a high-temperature operating state.

[0088] Step S503, determining whether the actual average power generation is less than a preset average power generation threshold, if so, proceeding to step S504; if not, continuing to cool the range extender.

[0089] In this embodiment, the average power generation threshold can be set manually. When the actual average power generation is less than the preset average power generation threshold, it indicates that the range-extended vehicle is likely to have left the highway or exited the high-power electric driving condition, so that the speed of the range extender decreases, the power generation decreases, and the operating temperature decreases. At this time, the cooling process for the range extender should be turned off to save electricity.

[0090] Step S504, turning off the cooling process for the range extender.

[0091] In this embodiment, when the actual average power generation is greater than the preset average power generation threshold, it means that the extended-range vehicle has probably not left the highway or has not exited the high-power electricity driving condition. Therefore, the speed of the range extender has not decreased, the power generation has not decreased, and the operating temperature has not decreased. The range extender is still at risk of high-temperature operation and needs to continue to be cooled.

[0092] The range extender cooling control method provided in the embodiment of the present application is that when the range extender is traveling on a highway, the power generation of the range extender is large, which easily causes the range extender to operate in a high temperature state, so the range extender needs to be cooled; however, when the range extender travels out of the highway, the power generation of the range extender decreases, and the actual operating temperature of the range extender decreases accordingly. At this time, based on the relationship between the actual power generation and the preset average power generation threshold, it is determined whether the cooling process for the range extender needs to be turned off, thereby reducing the waste of electric energy used for cooling and improving the utilization rate of electric energy in the vehicle.

[0093] Figure 6 The flowchart of the implementation of the range extender operation safety monitoring method provided in the sixth embodiment of the present application is shown. The difference between the sixth embodiment and the first embodiment is that step S103 further includes:

[0094] Step S601, extracting non-zero values ​​from the mileage values ​​to obtain valid mileage information.

[0095] In this embodiment, the user inputs different mileage information through multiple manual knobs, and the mileage values ​​corresponding to each manual knob are extracted, wherein the mileage values ​​that are not zero are the values ​​successfully input by the user, that is, valid mileage information.

[0096] Step S602, summing up the effective mileage information to obtain target mileage information.

[0097] In this embodiment, all effective mileage information is added together to obtain target mileage information, which is used to indicate the mileage that the extended-range vehicle is about to travel.

[0098] The range extender cooling control method provided in the embodiment of the present application enables the user to input target mileage information through multiple manual knobs, thereby determining the cooling measures that need to be taken when the range extender is running at a high temperature based on the target mileage information, and automatically adjusting the cooling measures based on the target mileage to shorten the duration of high-temperature operation of the range extender, thereby optimizing the performance and fuel consumption of the entire vehicle.

[0099] Figure 7 The flowchart of the implementation of the range extender operation safety monitoring method provided in the seventh embodiment of the present application is shown. The difference between the seventh embodiment and the first embodiment is that step S103 further includes:

[0100] Step S701, when the target mileage information is zero, determine whether the coolant temperature is greater than a preset coolant temperature threshold, if so, control the water pump and the fan to run, if not, do not cool the range extender.

[0101] In this embodiment, when the user does not enter the target mileage information or the target mileage information fails to enter, and the high-temperature working time of the range extender cannot be determined, the high and low gear operation of the water pump and the fan can be switched according to the actual coolant temperature, wherein when the water pump runs at high speed, the motor speed driving the water pump is about 1500-3000 rpm; when the fan runs at high speed, the fan speed is about 1150 rpm. The preset coolant temperature threshold can be the fifth coolant temperature threshold and the sixth coolant temperature threshold, wherein the fifth coolant temperature threshold is less than the sixth coolant temperature threshold. When the coolant temperature is less than the fifth coolant temperature threshold, the water pump and the fan are controlled not to run, and the range extender is not cooled; when the coolant temperature is greater than the fifth coolant temperature threshold but less than the sixth coolant temperature threshold, the water pump is controlled to run at low gear and the fan is controlled to run at low speed; when the coolant temperature is greater than the sixth coolant temperature threshold, the water pump is controlled to run at high speed and the fan is controlled to run at high speed.

[0102] The range extender cooling control method provided in the embodiment of the present application cannot determine the high-temperature working time of the range extender when the user has not entered the target mileage information or the target mileage information has failed to be entered. Therefore, the range extender is cooled down through a more reasonable temperature threshold, thereby minimizing the harm of high-temperature operation of the range extender and ensuring the safety and reliability of the extended-range vehicle during driving.

[0103] Corresponding to the method of the above embodiment, Figure 8 A structural block diagram of a range extender cooling control device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown. Figure 8 The exemplary range extender cooling control device may be an execution body of the range extender cooling control method provided in the aforementioned first embodiment.

[0104] Reference Figure 8 , the range extender cooling control device comprises:

[0105] The target mileage information calculation module 810 is used to calculate the target mileage information according to the mileage values ​​pointed to by the pointers of the multiple mileage adjustment knobs of the vehicle;

[0106] The driving information acquisition module 820 is used to acquire the mileage information, the current power generation information and the coolant temperature;

[0107] A current average power generation calculation module 830, configured to calculate the current average power generation according to the mileage information and the current power generation information;

[0108] A high-temperature driving mileage threshold calculation module 840 is used to calculate a high-temperature driving mileage threshold according to the mileage information and a preset high-temperature driving time threshold when it is determined that the target mileage information is greater than zero and when the current average power generation is greater than a preset average power generation threshold;

[0109] A cooling threshold interval information determination module 850 is used to determine cooling threshold interval information according to the target mileage information, the traveled mileage information and the high temperature travel mileage threshold; and

[0110] The cooling processing module 860 is used to perform cooling processing on the range extender according to the cooling threshold interval information and the coolant temperature.

[0111] The process of each module in the range extender cooling control device provided in the embodiment of the present application realizing its own function can be specifically referred to the aforementioned Figure 1 The description of the first embodiment is not repeated here.

[0112] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0113] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0114] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0115] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0116] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating or suggesting relative importance. It should also be understood that although the terms "first", "second", etc. are used to describe various elements in some embodiments of the present application in the text, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first table can be named as the second table, and similarly, the second table can be named as the first table without departing from the scope of the various described embodiments. The first table and the second table are both tables, but they are not the same table.

[0117] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0118] The range extender cooling control method provided in the embodiment of the present application can be applied to terminal devices such as mobile phones, tablet computers, wearable devices, vehicle-mounted devices, augmented reality (AR) / virtual reality (VR) devices, laptop computers, ultra-mobile personal computers (UMPC), netbooks, personal digital assistants (PDA), etc. The embodiment of the present application does not impose any restrictions on the specific type of the terminal device.

[0119] Fig. 9 Schematic diagram of the structure of a terminal device provided by an embodiment of the present application. Fig. 9As shown, the terminal device 9 of this embodiment includes: at least one processor 900 ( Fig. 9 Only one is shown in the figure), a memory 910, wherein the memory 910 stores a computer program 920 that can be run on the processor 900. When the processor 900 executes the computer program 920, the steps in the above-mentioned embodiments of the range extender cooling control method are implemented, such as Figure 1 Alternatively, when the processor 900 executes the computer program 920, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Figure 8 Functions of modules 810 to 860 are shown.

[0120] The terminal device 9 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal device may include, but is not limited to, a processor 900 and a memory 910. Those skilled in the art will appreciate that Fig. 9 It is only an example of the terminal device 9 and does not constitute a limitation on the terminal device 9. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal device may also include an input sending device, a network access device, a bus, etc.

[0121] The processor 900 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0122] In some embodiments, the memory 910 may be an internal storage unit of the terminal device 9, such as a hard disk or memory of the terminal device 9. The memory 910 may also be an external storage device of the terminal device 9, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 9. Further, the memory 910 may also include both an internal storage unit of the terminal device 9 and an external storage device. The memory 910 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 910 may also be used to temporarily store data that has been sent or is to be sent.

[0123] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0124] An embodiment of the present application also provides a terminal device, which includes at least one memory, at least one processor, and a computer program stored in the at least one memory and executable on the at least one processor, wherein when the processor executes the computer program, the terminal device implements the steps in any of the above-mentioned method embodiments.

[0125] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0126] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0127] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0128] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0129] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A range extender cooling control method, characterized in that: include: Calculate target mileage information according to mileage values ​​pointed to by pointers of multiple mileage adjustment knobs of the vehicle; Obtain mileage information, current power generation information, and coolant temperature; Calculating the current average power generation according to the mileage information and the current power generation information; When the target mileage information is greater than zero and the current average power generation is greater than a preset average power generation threshold, a high-temperature driving mileage threshold is calculated according to the traveled mileage information and a preset high-temperature driving time threshold; Determining cooling threshold interval information according to the target mileage information, the traveled mileage information, and the high-temperature travel mileage threshold; Cooling the range extender according to the cooling threshold interval information and the coolant temperature; The step of determining the cooling threshold interval information according to the target mileage information, the traveled mileage information and the high-temperature travel mileage threshold specifically includes: Calculating the difference between the target mileage information and the traveled mileage information to obtain remaining mileage information; Determining whether the remaining mileage information is less than the high-temperature driving mileage threshold; If yes, the cooling threshold interval information is determined as the first level cooling threshold interval; If not, determining the cooling threshold interval information as the second level cooling threshold interval; The step of cooling the range extender according to the cooling threshold interval information and the coolant temperature specifically includes: Cooling the range extender according to the first-level cooling threshold interval, the second-level cooling threshold interval and the coolant temperature; The first-level cooling threshold interval includes a first cooling threshold and a second cooling threshold, and the first cooling threshold is smaller than the second cooling threshold; the second-level cooling threshold interval includes a third cooling threshold and a fourth cooling threshold, and the third cooling threshold is smaller than the fourth cooling threshold.

2. The range extender cooling control method according to claim 1, characterized in that: The step of calculating the high-temperature driving mileage threshold according to the mileage information and the preset high-temperature driving time threshold specifically includes: Get the travel time information; Obtaining an average driving speed according to the traveled mileage information and the traveled time information; A high-temperature driving mileage threshold is obtained according to the average driving speed and a preset high-temperature driving time threshold.

3. The range extender cooling control method according to claim 1, characterized in that: The step of cooling the range extender according to the first-level cooling threshold interval, the second-level cooling threshold interval and the coolant temperature specifically includes: When the cooling threshold interval information is the first level cooling threshold interval and the coolant temperature is greater than the first cooling threshold, determining whether the coolant temperature is less than a second cooling threshold; If yes, the water pump is controlled to run at low speed and the fan is controlled to run at low gear; If not, the water pump is controlled to run at high speed and the fan at high speed; When the cooling threshold interval information is the second-level cooling threshold interval and the coolant temperature is greater than the third cooling threshold, determining whether the coolant temperature is less than a fourth cooling threshold; If yes, the water pump is controlled to run at low speed and the fan is controlled to run at low gear; If not, the water pump is controlled to run at high speed and the fan is controlled to run at high speed.

4. The range extender cooling control method according to claim 1, characterized in that: After the step of cooling the range extender according to the cooling threshold interval information and the coolant temperature, the method further includes: Obtaining actual power generation information and actual mileage information after cooling the range extender; Calculating actual average power generation according to the actual power generation information and the actual mileage information; When the actual average power generation is less than a preset average power generation threshold, the cooling process for the range extender is turned off.

5. The range extender cooling control method according to claim 1, characterized in that: The step of calculating the target mileage information according to the mileage values ​​pointed to by the pointers of the multiple mileage adjustment knobs of the vehicle specifically includes: Extracting non-zero values ​​from the mileage values ​​to obtain valid mileage information; The effective mileage information is summed to obtain the target mileage information.

6. The range extender cooling control method according to claim 1, characterized in that: Also includes: When the target mileage information is zero and it is determined that the coolant temperature is greater than a preset coolant temperature threshold, the water pump and the fan are controlled to operate.

7. A range extender cooling control device, characterized in that: include: A target mileage information calculation module, used to calculate the target mileage information according to the mileage values ​​pointed to by the pointers of multiple mileage adjustment knobs of the vehicle; A driving information acquisition module is used to obtain the mileage information, current power generation information and coolant temperature; A current average power generation calculation module, used to calculate the current average power generation according to the mileage information and the current power generation information; a high-temperature driving mileage threshold calculation module, configured to calculate a high-temperature driving mileage threshold according to the mileage information and a preset high-temperature driving time threshold when it is determined that the target mileage information is greater than zero and when the current average power generation is greater than a preset average power generation threshold; A cooling threshold interval information determination module, used to determine the cooling threshold interval information according to the target mileage information, the traveled mileage information and the high-temperature travel mileage threshold; as well as A cooling processing module, used for cooling the range extender according to the cooling threshold interval information and the coolant temperature; The step of determining the cooling threshold interval information according to the target mileage information, the traveled mileage information and the high-temperature travel mileage threshold specifically includes: Calculating the difference between the target mileage information and the traveled mileage information to obtain remaining mileage information; Determining whether the remaining mileage information is less than the high-temperature driving mileage threshold; If yes, the cooling threshold interval information is determined as the first level cooling threshold interval; If not, determining the cooling threshold interval information as the second level cooling threshold interval; The step of cooling the range extender according to the cooling threshold interval information and the coolant temperature specifically includes: Cooling the range extender according to the first-level cooling threshold interval, the second-level cooling threshold interval and the coolant temperature; The first-level cooling threshold interval includes a first cooling threshold and a second cooling threshold, and the first cooling threshold is smaller than the second cooling threshold; the second-level cooling threshold interval includes a third cooling threshold and a fourth cooling threshold, and the third cooling threshold is smaller than the fourth cooling threshold.

8. A terminal device, characterized in that: The terminal device includes a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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