Vehicle idle speed control method, device, equipment, storage medium and vehicle

Abstract

The application relates to a vehicle idle speed control method, device, equipment, storage medium and vehicle, and relates to the technical field of automobiles. A target demand power corresponding to a target vehicle under a target environment temperature is determined, the target demand power is used to indicate the power demand of the engine when the power of the target vehicle is increased from the current residual power to the target residual power; based on the target demand power, a target power generation torque load parameter corresponding to the target vehicle is determined; based on the target power generation torque load parameter and a state parameter of the target vehicle, idle speed control of the target vehicle is realized, and the state parameter of the target vehicle comprises at least one of the following: an engine comprehensive resistance torque, an engine target idle speed, an engine current idle speed, and the engine target idle speed is an adjusted idle speed. Therefore, the problem of unstable vehicle idle speed caused by the influence of temperature change on power generation load can be avoided, and the idle speed stability of the vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, specifically to vehicle idling control methods, devices, equipment, storage media, and vehicles. Background Technology

[0002] In vehicle-related technologies, idling primarily refers to the engine's operating state when in neutral. With the increasing number of vehicles on the road, idling is becoming increasingly common due to various reasons such as peak-hour traffic jams, waiting at traffic lights, or unexpected situations. On the other hand, with the rapid development of automotive technology, P2 hybrid vehicles, due to their powerful performance and diverse modes, can achieve multiple functions such as idling charging, driving charging, rapid engine start-stop, regenerative braking, and optimal engine power point selection, making them a current research hotspot in the automotive industry for vehicle electrification technology.

[0003] In P2 hybrid vehicle idle speed control technology, the engine management system (EMS) is primarily used. The EMS dynamically adjusts engine torque based on the difference between the target idle speed and the actual speed using a closed-loop proportional-integral-derivative (PID) controller, thereby achieving stable idle speed control. However, in this method, temperature changes cause the generator load to send different torques to the EMS, leading to significant torque deviations in the engine and impacting vehicle idle speed stability. Therefore, current vehicle idle speed stability is relatively poor. Summary of the Invention

[0004] This application provides a vehicle idling speed control method, device, equipment, storage medium, and vehicle to at least solve the technical problem of poor idling speed stability in related technologies. The technical solution of this application is as follows:

[0005] According to the first aspect of this application, a vehicle idling speed control method is provided, which determines the target power demand of a target vehicle at a target ambient temperature, wherein the target power demand is used to indicate the power demand of the engine when the battery level of the target vehicle increases from the current remaining battery level to the target remaining battery level; based on the target power demand, the target generating torque load parameter corresponding to the target vehicle is determined; and based on the target generating torque load parameter and the state parameters of the target vehicle, the idling speed control of the target vehicle is realized, wherein the state parameters of the target vehicle include at least one of the following: engine comprehensive resistance torque, engine target idling speed, and engine current idling speed, wherein the engine target idling speed is the adjusted idling speed.

[0006] Based on the aforementioned technical means, this application can determine the target vehicle's idle speed by increasing the battery's current remaining charge to the target required power corresponding to the target remaining charge under a target ambient temperature. Based on this target required power, the corresponding target generating torque load parameter is determined. Then, based on the target generating torque load parameter and the target vehicle's state parameters, idle speed control of the target vehicle is achieved. Using this method, when the target vehicle is idling, the target generating torque load parameter corresponding to the target vehicle can be determined based on parameters such as the target ambient temperature, current remaining charge, and target remaining charge. Furthermore, based on this target generating torque load parameter and the target vehicle's state parameters, idle speed optimization control of the target vehicle can be performed to avoid the problem of unstable vehicle idle speed caused by temperature changes affecting the generating load, thereby improving vehicle idle speed stability.

[0007] In one possible implementation, determining the target power demand of a target vehicle at a target ambient temperature includes: determining the target charging amount corresponding to the increase of the target vehicle's battery level from the current remaining battery level to the target remaining battery level, and determining a first power demand of the target vehicle at the target ambient temperature based on the target charging amount; determining a charging power threshold for the target vehicle based on the target vehicle's current remaining battery level and the current first temperature of the battery, the charging power threshold indicating the maximum charging power of the target vehicle under the condition that the target vehicle's battery level is the current remaining battery level and the battery temperature is the first temperature; and determining the minimum value between the first power demand and the charging power threshold as the target power demand of the target vehicle at the target ambient temperature.

[0008] Based on the aforementioned technical means, this application can determine the target power demand of the target vehicle at the target ambient temperature based on the current remaining power of the target vehicle, the target remaining power, the target ambient temperature, and the current battery temperature, thereby improving the accuracy of the target power demand, ensuring battery charging safety, and reducing energy waste.

[0009] In one possible implementation, determining the target power generation torque load parameters corresponding to the target vehicle based on the target power demand includes: determining the first power generation torque load parameters corresponding to the target power demand based on the target power demand; and determining the corresponding target power generation torque load parameters from a preset parameter table based on the current engine temperature of the target vehicle and the first power generation torque load parameters, wherein the preset parameter table consists of parameters obtained in advance through testing on a test bench.

[0010] Based on the aforementioned technical means, this application adjusts and optimizes the first power generation torque load parameters corresponding to the target power demand by using a preset parameter table and engine temperature, in order to optimize the idle speed control of the target vehicle in combination with idle charging and engine coolant temperature, thereby further improving the stability of the idle speed control of the target vehicle.

[0011] In one possible implementation, idle speed control of the target vehicle is achieved based on the target generator torque load parameters and the state parameters of the target vehicle, including: determining the engine idle speed difference of the target vehicle based on the engine target idle speed and the current engine idle speed; determining the idle speed proportional-integral-derivative (PID) torque control parameters corresponding to the target vehicle based on the engine idle speed difference; determining the engine demand torque control parameters based on the engine comprehensive resistance torque, the target generator torque load parameters, and the idle speed PID torque control parameters, and achieving idle speed control of the target vehicle through the engine demand torque control parameters, wherein the engine demand torque control parameters include at least one of the following: fuel injection parameters, intake parameters, and ignition parameters.

[0012] Based on the aforementioned technical means, this application determines the engine's required torque control parameters by using idle speed PID torque control parameters, engine comprehensive resistance torque, and target generator torque load parameters. This allows for the realization of idle speed control of the target vehicle through the engine's required torque parameters, thereby improving the efficiency and stability of idle speed control of the target vehicle.

[0013] In one possible implementation, the method further includes: determining the towing torque parameter of the target vehicle based on the current idle speed of the target vehicle, the towing torque parameter indicating the load torque of the target vehicle at the current idle speed; and adjusting the towing torque parameter to obtain the engine's overall resistance torque based on the altitude of the target vehicle and the engine temperature.

[0014] Based on the aforementioned technical means, this application can adjust the drag torque parameters of the target vehicle based on the altitude and engine temperature of the target vehicle, thereby determining the comprehensive engine resistance torque, fully considering the influence of the external environment (altitude) and the internal environment (engine coolant temperature) on the vehicle's idle speed control, and further improving the stability of the target vehicle's idle speed control.

[0015] According to a second aspect of this application, a vehicle idling speed control device is provided, comprising: a determining unit and a controlling unit; the determining unit is configured to determine the target power demand of a target vehicle at a target ambient temperature, the target power demand indicating the power demand on the engine when the battery level of the target vehicle increases from the current remaining battery level to the target remaining battery level; the determining unit is further configured to determine the target generating torque load parameter corresponding to the target vehicle based on the target power demand; the controlling unit is configured to implement idling speed control of the target vehicle based on the target generating torque load parameter and the state parameters of the target vehicle, the state parameters of the target vehicle including at least one of the following: engine combined resistance torque, engine target idling speed, and engine current idling speed, wherein the engine target idling speed is the adjusted idling speed.

[0016] In one possible implementation, the determining unit is further configured to determine the target charging amount corresponding to the increase of the target vehicle's battery level from the current remaining battery level to the target remaining battery level, and to determine the first required power of the target vehicle at the target ambient temperature based on the target charging amount; the determining unit is further configured to determine a charging power threshold of the target vehicle based on the target vehicle's current remaining battery level and the current first temperature of the battery, the charging power threshold indicating the maximum charging power of the target vehicle under the condition that the target vehicle's battery level is the current remaining battery level and the battery temperature is the first temperature; the determining unit is further configured to determine the minimum value between the first required power and the charging power threshold as the target required power of the target vehicle at the target ambient temperature.

[0017] In one possible implementation, the determining unit is further configured to determine the first power generation torque load parameter corresponding to the target power demand based on the target power demand; the determining unit is further configured to determine the corresponding target power generation torque load parameter from a preset parameter table based on the current engine temperature of the target vehicle and the first power generation torque load parameter, wherein the preset parameter table consists of parameters obtained in advance through testing on a test bench.

[0018] In one possible implementation, the determining unit is further configured to determine the engine idle speed difference of the target vehicle based on the engine target idle speed and the engine current idle speed; the determining unit is further configured to determine the idle speed proportional-integral-derivative (PID) torque control parameters corresponding to the target vehicle based on the engine idle speed difference; the determining unit is further configured to determine the engine demand torque control parameters based on the engine comprehensive resistance torque, the target generator torque load parameters, and the idle speed PID torque control parameters; the control unit is further configured to implement idle speed control of the target vehicle through the engine demand torque control parameters, wherein the engine demand torque control parameters include at least one of the following: fuel injection parameters, intake parameters, and ignition parameters.

[0019] In one possible implementation, the determining unit is further configured to determine the towing torque parameter of the target vehicle based on the current idle speed of the target vehicle, the towing torque parameter indicating the load torque of the target vehicle at the current idle speed; and adjust the towing torque parameter to obtain the engine's comprehensive resistance torque based on the altitude of the target vehicle and the engine temperature.

[0020] According to a third aspect of this application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the first aspect described above and any possible implementation thereof.

[0021] According to a fourth aspect of this application, a computer-readable storage medium is provided, which, when executed by a processor of an electronic device, enables the electronic device to perform the methods described in the first aspect and any possible implementation thereof.

[0022] According to the fifth aspect of this application, a vehicle is provided for implementing the method of the first aspect described above and any possible implementation thereof.

[0023] According to a sixth aspect of this application, a computer program product is provided, the computer program product including computer instructions that, when executed on an electronic device, cause the electronic device to perform the method described in the first aspect and any possible implementation thereof.

[0024] Therefore, the above-mentioned technical features of this application have the following beneficial effects:

[0025] (1) By determining the target power required to increase the current remaining battery charge of the target vehicle to the target remaining charge at the target ambient temperature, and based on this target power requirement, the corresponding target generating torque load parameter is determined. Then, based on the target generating torque load parameter and the target vehicle's state parameters, idle speed control of the target vehicle is achieved. Based on the above method, when the target vehicle is idling, the target generating torque load parameter corresponding to the target vehicle can be determined based on parameters such as the target ambient temperature, current remaining charge, and target remaining charge. Then, based on this target generating torque load parameter and the target vehicle's state parameters, idle speed optimization control of the target vehicle is performed to avoid the problem of unstable vehicle idle speed caused by the influence of temperature changes on the generating load, thereby improving vehicle idle speed stability.

[0026] (2) Based on the current remaining power of the target vehicle, the target remaining power, the target ambient temperature, and the current battery temperature, determine the target power demand of the target vehicle at the target ambient temperature, so as to improve the accuracy of the target power demand, ensure battery charging safety, and reduce energy waste.

[0027] (3) By using the preset parameter table and engine temperature, the first generator torque load parameter corresponding to the target power demand is adjusted and optimized, so as to combine idle charging and engine water temperature to optimize the idle speed control of the target vehicle and further improve the stability of the idle speed control of the target vehicle.

[0028] (4) By using the idle speed PID torque control parameters, the engine comprehensive resistance torque and the target generator torque load parameters, the engine demand torque control parameters are determined so as to achieve idle speed control of the target vehicle through the engine demand torque parameters, thereby improving the efficiency of idle speed control of the target vehicle and thus improving the stability of idle speed control of the target vehicle.

[0029] (5) Based on the altitude and engine temperature of the target vehicle, the reverse torque parameters of the target vehicle are adjusted to determine the comprehensive resistance torque of the engine. The influence of the external environment (altitude) and the internal environment (engine water temperature) on the vehicle's idle speed control is fully considered to further improve the stability of the idle speed control of the target vehicle.

[0030] It should be noted that the technical effects of any of the implementation methods in aspects two through six can be found in the technical effects of the corresponding implementation methods in aspect one, and will not be repeated here.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0033] Figure 1 This is a schematic diagram of a vehicle idle speed control system according to an exemplary embodiment;

[0034] Figure 2 This is a flowchart illustrating a vehicle idling speed control method according to an exemplary embodiment;

[0035] Figure 3 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0036] Figure 4 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0037] Figure 5 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0038] Figure 6 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0039] Figure 7 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0040] Figure 8 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0041] Figure 9This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0042] Figure 10 This is a flowchart illustrating yet another vehicle idling speed control method according to an exemplary embodiment;

[0043] Figure 11 This is a block diagram illustrating a vehicle idle speed control device according to an exemplary embodiment;

[0044] Figure 12 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0046] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] When the vehicle is idling and generating electricity, the Vehicle Control Unit (VCU) sends the charging hub as load data to the EMC for calculation and processing. However, the charging power of the vehicle battery is affected by different ambient temperatures. For example, in low-temperature winter conditions, the charging power of the vehicle battery needs to gradually increase as the temperature rises. This results in the charging load sending different load torques to the EMS to control the vehicle's idle speed due to variations in battery temperature and remaining charge. Furthermore, the larger the sent charging load torque, the greater the deviation in actual engine torque due to the impact on engine combustion power in low-temperature environments compared to normal temperatures, thus affecting the vehicle's idle stability.

[0048] The vehicle idling speed control method provided in this application embodiment can be applied to vehicle idling speed control systems. Figure 1 A schematic diagram of one structure of the vehicle's idle speed control system is shown. Figure 1As shown, the vehicle idle speed control system 10 includes: an information acquisition module 11, a vehicle control unit 12, an electronic control unit 13, and an engine 14.

[0049] The vehicle idle speed control system 10 can be used in the Internet of Things. The vehicle idle speed control system 10 (such as information acquisition module 11, vehicle control unit 12, electronic control unit 13 and engine 14, etc.) may include multiple central processing units (CPUs), multiple memories, storage devices storing multiple operating systems and other hardware.

[0050] The information acquisition module 11 is used to acquire various status parameters of the vehicle, such as the current ambient temperature, engine temperature, real-time engine idle speed, target idle speed, real-time battery charging status (SOC), target SOC, altitude, and other information.

[0051] Optionally, the information acquisition module 11 may include multiple sensors, such as temperature sensors and speed sensors, to acquire various status parameters of the vehicle.

[0052] Optional, engine temperature, which can be the engine coolant temperature.

[0053] The vehicle control unit 12, or VCU, is used to monitor the charging of the vehicle, such as determining the target power demand of the vehicle at different temperatures and the motor generating torque load (first generating torque load parameter) corresponding to the target power demand.

[0054] The electronic control unit 13, or ECU, is used to adjust the first generating torque load parameter in combination with the engine temperature to obtain the target generating torque load parameter, and to realize the idle speed control of the target vehicle based on the adjusted target generating torque load parameter.

[0055] Optionally, the electronic control unit 13 can also be used to calculate parameters such as the engine's comprehensive resistance torque and idle speed PID torque control parameters, and combine them with the generator's comprehensive resistance torque, target generator torque load parameters, and idle speed PID torque control parameters to determine the engine's required torque control parameters.

[0056] Optionally, after determining the engine demand torque control parameters, the electronic control unit 13 can send the engine demand torque control parameters to the engine 14 so as to achieve idle speed control of the target vehicle through the engine 14.

[0057] Engine 14 is used to control its own fuel injection, air intake, ignition and other states based on the engine demand torque control parameters sent by electronic control unit 13, so as to achieve idle speed control of the target vehicle.

[0058] In some embodiments, such as Figure 2 As shown, in conjunction with the aforementioned vehicle idle speed control system 10, this application, when implementing vehicle idle speed control, first acquires various state parameters of the vehicle through the information acquisition module 11, determines the first generating torque load parameter at the target temperature through the VCU 12 based on these parameters, and adjusts the first generating torque load parameter through the ECU 13 to obtain the target generating torque load parameter. Further, based on the target generating torque load parameter, the ECU calculates and determines the engine's required torque control parameters, and achieves internal torque coordination through the engine 14 to realize idle speed control of the target vehicle and maintain the stability of the vehicle's idle speed.

[0059] For ease of understanding, the vehicle idling speed control method provided in this application will be described in detail below with reference to the accompanying drawings.

[0060] Figure 3 This is a flowchart illustrating a vehicle idling speed control method according to an exemplary embodiment, such as... Figure 3 As shown, the vehicle idle speed control method includes the following S201-S203:

[0061] S201. Determine the target power requirement of the target vehicle at the target ambient temperature.

[0062] The target power requirement is used to indicate the engine power requirement when the target vehicle's battery level increases from its current remaining battery level to the target remaining battery level.

[0063] Optional, target ambient temperature refers to the temperature of the external environment of the vehicle, such as the current external ambient temperature of the target vehicle.

[0064] It is understandable that, since charging speeds differ under different ambient temperatures, the power requirements of the engine will also differ depending on the same battery level, as the battery level increases from the same remaining capacity to the same target remaining capacity.

[0065] For example, for battery A, if the remaining power needs to be increased from 30% to 60%, the target power requirement is 1200 in an environment of 30 degrees Celsius, and the target power requirement may be 1700 in an environment of 5 degrees Celsius.

[0066] S202. Based on the target power demand, determine the target power generation torque load parameters corresponding to the target vehicle.

[0067] Optionally, the target generating torque load parameters (i.e. torque) of the target demand power can be determined based on the correspondence between the demand power and the generating torque load parameters.

[0068] Optional, such as Figure 4 As shown, the power generation torque load parameters corresponding to the power output can be determined based on the following formula:

[0069] Tn = W * 9550 / n (Formula 1)

[0070] Where Tn is the generator torque load parameter, also known as generator torque; W is the required power ( Figure 4 (Target power required); n is the target speed, i.e., the target idle speed of the engine.

[0071] Optionally, the target idle speed of the engine can be determined by looking up a table based on the engine temperature and the vehicle's gear position.

[0072] Optionally, after obtaining the generator torque load parameters corresponding to the target power demand, the generator torque load parameters can be corrected, and the corrected generator torque load parameters can be determined as the target generator torque load parameters corresponding to the target vehicle.

[0073] For example, such as Figure 4 As shown, after obtaining the generator torque load parameters, the generator torque load parameters can be optimized by torque filtering to increase the torque and decrease the slope, thereby obtaining the generator torque load parameter Tn, and determining the generator torque load parameter Tn as the target generator torque load parameter.

[0074] S203. Based on the target generator torque load parameters and the target vehicle's state parameters, the idle speed control of the target vehicle is achieved.

[0075] The target vehicle's state parameters include at least one of the following: engine combined resistance torque, engine target idle speed, and engine current idle speed, with the engine target idle speed being the adjusted idle speed.

[0076] Optionally, the engine's operating conditions can be adjusted in real time based on the target generator torque load parameters and the target vehicle's status parameters to achieve idle speed control of the target vehicle.

[0077] Optionally, the engine's required combustion torque can be determined based on the target power generation torque load parameters and the target vehicle's state parameters, and this required combustion torque can be sent to the engine. The engine can then respond to (achieve) the required combustion torque based on the control of its various working components.

[0078] In this embodiment, when idling control of a target vehicle is required, it is determined that the target vehicle will increase its current remaining battery charge to the target required power corresponding to the target remaining battery charge at the target ambient temperature. Based on this target required power, the corresponding target generating torque load parameter is determined. Then, based on the target generating torque load parameter and the target vehicle's state parameters, idling control of the target vehicle is achieved. Based on this method, when the target vehicle is idling, the target generating torque load parameter corresponding to the target vehicle can be determined based on parameters such as the target ambient temperature, current remaining battery charge, and target remaining battery charge. Then, based on this target generating torque load parameter and the target vehicle's state parameters, idling optimization control of the target vehicle is performed to avoid the problem of unstable vehicle idling caused by the influence of temperature changes on the generating load, thereby improving vehicle idling stability.

[0079] In some embodiments, in order to improve battery charging efficiency and reduce energy waste, such as Figure 5 As shown, in a vehicle idling speed control method provided in this application embodiment, the above-mentioned S201 includes S301-S303:

[0080] S301. Determine the target charging amount corresponding to the increase of the target vehicle's battery level from the current remaining battery level to the target remaining battery level, and determine the first required power of the target vehicle at the target ambient temperature based on the target charging amount.

[0081] Optionally, the target charging amount can also be understood as the difference between the target remaining power and the current remaining power.

[0082] Optionally, the current remaining power can refer to the current SOC, and the target remaining power can refer to the target SOC. Then the target charging amount can refer to ΔSOC (target SOC - current SOC).

[0083] It is understandable that for the same target charging amount, the required power will differ under different ambient temperatures.

[0084] Optionally, the target charging amount and the first required power corresponding to the target ambient temperature can be determined by looking up a table.

[0085] Optionally, based on experimental data, the correspondence between the first required power and the target charging amount and the target ambient temperature can be determined, a data correspondence table can be established, and then based on the data correspondence table, the target charging amount and the corresponding first required power under the target ambient temperature can be determined.

[0086] S302. Based on the current remaining charge of the target vehicle and the current first temperature of the battery, determine the charging power threshold of the target vehicle. The charging power threshold is used to indicate the maximum charging power of the target vehicle under the condition that the charge of the target vehicle is the current remaining charge and the temperature of the battery is the first temperature.

[0087] Optionally, the first temperature of the current battery can be determined by a temperature sensor, and the charging power threshold of the target vehicle can be determined by the VCU based on the current remaining charge of the target vehicle and the first temperature of the current battery.

[0088] Optionally, the charging power threshold corresponding to the current remaining battery power and the current first temperature of the battery can be determined by looking up a table.

[0089] It should be noted that since batteries generate heat during charging, the charging power threshold will differ at different battery temperatures (e.g., 30 degrees Celsius vs. 60 degrees Celsius) for the same remaining charge. On the other hand, the charging demand of batteries will also differ for different remaining charges (e.g., zero charge vs. 80% charge), resulting in different charging power thresholds for different remaining charges.

[0090] For example, for the same battery with the same remaining charge, since the battery continuously releases heat during charging, the charging power threshold at a battery temperature of 60 degrees Celsius will be greater than the charging power threshold at a battery temperature of 30 degrees Celsius. Furthermore, for the same battery temperature, in order to avoid damage to the battery, the charging power threshold will also differ depending on the current remaining charge. For instance, the charging power threshold when the battery is currently empty (i.e., 0%) will be greater than the charging power threshold when the battery is currently 80% full.

[0091] Therefore, optionally, based on experimental data, the correspondence between the charging power threshold and the current remaining power and the current first temperature of the battery can be determined, a data correspondence table can be established, and then based on the data correspondence table, the current remaining power of the target vehicle and the corresponding charging power threshold at the current first temperature of the battery can be determined.

[0092] S303. The minimum value between the first required power and the charging power threshold is determined as the target required power of the target vehicle at the target ambient temperature.

[0093] It should be noted that the minimum value between the first required power and the charging power threshold can be understood as the smaller power value between the first required power and the charging power threshold.

[0094] Optionally, the target power demand can also be understood as the coordinated power demand determined based on the charging power threshold and the first power demand.

[0095] For example, if the first power demand of the target vehicle at the target ambient temperature is 100 and the charging power threshold of the target vehicle is 120, then the target power demand of the target vehicle at the target ambient temperature is 100.

[0096] It should be noted that the first required power can be understood as the power required for the target vehicle to complete the target charging amount under the target ambient temperature, and the charging power threshold can be understood as the theoretical maximum charging power of the target vehicle under the current battery temperature and current remaining power, set in order to improve the safety during the charging process.

[0097] Exceeding the first required power may lead to energy waste; exceeding the charging power threshold may damage battery life and create safety hazards. Therefore, the minimum value between the first required power and the charging power threshold can be determined as the target required power to maximize charging efficiency while ensuring charging safety.

[0098] For example, taking the determination of the target power demand at the current moment as an example, such as Figure 4 As shown, the first required power can be determined by looking up a table based on the current ambient temperature T1 (i.e., the target ambient temperature) and the target charging amount ΔSOC; the current charging power threshold can be determined by looking up a table based on the current remaining power (current SOC) and the battery temperature T2; and the target required power can be obtained by taking the smaller of the first required power and the current charging power threshold.

[0099] In this embodiment, the target power requirement of the target vehicle at the target ambient temperature is determined based on the current remaining power of the target vehicle, the target remaining power, the target ambient temperature, and the current battery temperature, so as to improve the accuracy of the target power requirement, ensure battery charging safety, and reduce energy waste.

[0100] In some embodiments, to optimize the idle speed control of the target vehicle by combining idle charging and engine coolant temperature, such as... Figure 6 As shown, in a vehicle idling speed control method provided in this application embodiment, the above-mentioned S202 includes S401-S402:

[0101] S401. Based on the target demand power, determine the first generating torque load parameter corresponding to the target demand power.

[0102] Optionally, the first torque corresponding to the target power requirement can be determined based on the target power requirement using Formula 1 above.

[0103] Optionally, after obtaining the first torque, the VCU can optimize the first torque through torque filtering to increase the torque and decrease the slope, thereby obtaining the first generation torque load parameters.

[0104] Optionally, after obtaining the first generating torque load parameter, the VCU can send the first generating torque load parameter to the ECU via the CAN network.

[0105] S402. Based on the current engine temperature and first power generation torque load parameters of the target vehicle, determine the corresponding target power generation torque load parameters from the preset parameter table. The preset parameter table contains parameters obtained through pre-testing on a test bench.

[0106] Optionally, after receiving the first generator torque load parameter, the ECU can determine the target generator torque load parameter by looking up a table, taking into account the engine temperature.

[0107] Optionally, the target generating torque load parameters can be determined by looking up a table based on the engine temperature and the first generating torque load parameters.

[0108] Optionally, based on experimental data, the correspondence between the target generating torque load parameters and the engine temperature and the first generating torque load parameters can be determined, a data correspondence table can be established, and then based on the data correspondence table, the target generating torque load parameters corresponding to the current engine temperature and the first generating torque load parameters can be determined.

[0109] Optional, combined Figure 4 It can Figure 4 The obtained generator torque load parameter Tn is determined as the first generator torque load parameter, and the first generator torque load parameter is adjusted to obtain the corrected first generator torque load parameter Tn', and the corrected first generator torque load parameter Tn' is determined as the target torque load parameter.

[0110] For example, such as Figure 7 As shown, the ECU can receive the first generator torque load parameter started by the VCU, and combine it with the engine coolant temperature. By using the generator torque correction lookup table, the first generator torque load parameter can be corrected and adjusted to obtain the target generator torque load parameter.

[0111] In this embodiment, the first generator torque load parameter corresponding to the target power demand is adjusted and optimized by using a preset parameter table and engine temperature. This is combined with idle charging and engine coolant temperature to optimize the idle speed control of the target vehicle and further improve the stability of the idle speed control of the target vehicle.

[0112] In some embodiments, in order to improve the efficiency of idling control of the target vehicle, such as Figure 8 As shown, in a vehicle idling speed control method provided in this application embodiment, the above-mentioned S203 includes S501-S503:

[0113] S501. Determine the difference between the target engine idle speed and the current engine idle speed of the target vehicle.

[0114] S502. Based on the engine idle speed difference, determine the PID torque control parameters of the target vehicle corresponding to the idle speed proportional-integral-derivative controller.

[0115] Optionally, the idle speed PID torque control parameters corresponding to the engine idle speed difference can be determined by looking up a table based on the engine idle speed difference.

[0116] Optionally, based on experimental data, the correspondence between the idle speed PID torque control parameters and the engine idle speed difference can be determined, a data correspondence table can be established, and then based on the data correspondence table, the idle speed PID torque control parameters corresponding to the current engine idle speed difference can be determined.

[0117] For example, such as Figure 9 As shown, the target toxin's rotational speed can be subtracted from the actual idle speed to obtain the speed difference (i.e., the engine idle speed difference). The idle speed PID torque control parameters corresponding to the speed difference can then be determined by looking up a table.

[0118] S503: Based on the engine's comprehensive resistance torque, target generator torque load parameters, and idle speed PID torque control parameters, determine the engine's required torque control parameters, and achieve idle speed control of the target vehicle through the engine's required torque control parameters.

[0119] The engine torque control parameters include at least one of the following: fuel injection parameters, intake parameters, and ignition parameters.

[0120] Optionally, the sum of the engine's combined resistance torque, the target generator torque load parameter, and the idle speed PID torque control parameter can be determined as the engine's required torque (engine's required combustion torque). The engine's required torque control parameter can then be determined based on this engine's required torque, thereby responding to the engine's required torque and achieving idle speed control of the target vehicle.

[0121] For example, such as Figure 9 As shown, after obtaining the engine's comprehensive resistance torque, target generator torque load parameters, and idle speed PID torque load parameters, these three parameters can be added together to obtain the engine's required torque control parameters. Based on these engine required torque control parameters, the engine controls the fuel injection, intake, and ignition conditions.

[0122] In this embodiment, the engine demand torque control parameters are determined by the idle speed PID torque control parameters, the engine comprehensive resistance torque, and the target generator torque load parameters. The idle speed control of the target vehicle is achieved by using the engine demand torque parameters, thereby improving the efficiency of the idle speed control of the target vehicle and thus improving the stability of the idle speed control of the target vehicle.

[0123] In some embodiments, in order to take into account the influence of the external and internal environments on vehicle idling control, such as Figure 10 As shown, the vehicle idling speed control method provided in this application embodiment further includes S601-S602:

[0124] S601. Based on the current idle speed of the target vehicle, determine the reverse towing torque parameters of the target vehicle.

[0125] Among them, the drag torque parameter is used to indicate the load torque of the target vehicle at the current idle speed.

[0126] S602. Based on the altitude of the target vehicle and the engine temperature, the reverse drag torque parameters are adjusted to obtain the engine's comprehensive resistance torque.

[0127] Optionally, the reverse torque parameters of the target vehicle can be determined by looking up a table based on the engine's current idle speed and intake pressure.

[0128] Furthermore, such as Figure 9 As shown, based on the target vehicle's current altitude and drag torque parameters, the altitude drag torque correction value is determined by looking up a table; based on the target vehicle's engine temperature and drag torque parameters, the engine temperature drag torque correction value is determined by looking up a table. Based on these altitude and engine temperature drag torque correction values, the drag torque parameters are adjusted to obtain the engine's overall drag torque.

[0129] In this embodiment, the drag torque parameters of the target vehicle are adjusted based on the altitude and engine temperature of the target vehicle to determine the comprehensive engine resistance torque. This fully considers the influence of the external environment (altitude) and the internal environment (engine coolant temperature) on the vehicle's idle speed control, thereby further improving the stability of the target vehicle's idle speed control.

[0130] It should be noted that, based on the above method, existing hardware settings (such as VCU, ECU, engine, etc.) can be used without increasing equipment costs. By adding parameters such as engine temperature (engine coolant temperature) and generator torque load correction, the problem of idling instability caused by combustion efficiency fluctuations in large load ranges under different temperature environments (such as low temperature, high temperature, etc.) can be optimized. This ensures that, at least when idling in very low temperature conditions (such as low temperature, high temperature conditions), each generator load range is controlled in a relatively optimal state, thereby improving the vehicle's idling stability.

[0131] It is understandable that the criteria for determining different ambient temperatures, such as low temperature and high temperature, can be achieved through one or more preset thresholds. For example, a temperature greater than a first preset temperature is considered a high-temperature environment, and a temperature less than a second preset temperature is considered a low-temperature environment.

[0132] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the vehicle idle speed control device or electronic device includes corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0133] This application embodiment can, according to the above method, exemplarily divide a vehicle idle speed control device or electronic device into functional modules. For example, the vehicle idle speed control device or electronic device may include functional modules corresponding to each functional division, or two or more functions may be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division; in actual implementation, there may be other division methods.

[0134] Figure 11 This is a block diagram illustrating a vehicle idle speed control device according to an exemplary embodiment. (Refer to...) Figure 11 The vehicle idle speed control device 1100 includes: a determination unit 1101 and a control unit 1102.

[0135] The determining unit 1101 is used to determine the target power demand of the target vehicle at the target ambient temperature. The target power demand is used to indicate the power demand of the engine when the battery level of the target vehicle increases from the current remaining battery level to the target remaining battery level.

[0136] The determining unit 1101 is also used to determine the target power generation torque load parameters corresponding to the target vehicle based on the target demand power.

[0137] Control unit 1102 is used to control the idle speed of the target vehicle based on the target generator torque load parameters and the state parameters of the target vehicle. The state parameters of the target vehicle include at least one of the following: engine combined resistance torque, engine target idle speed, and engine current idle speed. The engine target idle speed is the adjusted idle speed.

[0138] In some embodiments, the determining unit 1101 is further configured to determine the target charging amount corresponding to the increase of the target vehicle's battery level from the current remaining battery level to the target remaining battery level, and to determine the first required power of the target vehicle at the target ambient temperature based on the target charging amount.

[0139] The determining unit 1101 is further configured to determine a charging power threshold for the target vehicle based on the current remaining charge of the target vehicle and the current first temperature of the battery. The charging power threshold is used to indicate the maximum charging power of the target vehicle under the condition that the charge of the target vehicle is the current remaining charge and the temperature of the battery is the first temperature.

[0140] The determining unit 1101 is further configured to determine the minimum value between the first required power and the charging power threshold as the target required power of the target vehicle at the target ambient temperature.

[0141] In some embodiments, the determining unit 1101 is further configured to determine the first power generation torque load parameter corresponding to the target power demand based on the target power demand.

[0142] The determining unit 1101 is also used to determine the corresponding target generating torque load parameters from a preset parameter table based on the current engine temperature and the first generating torque load parameters of the target vehicle. The preset parameter table consists of parameters obtained in advance through testing on a test bench.

[0143] In some embodiments, the determining unit 1101 is further configured to determine the engine idle speed difference of the target vehicle based on the engine target idle speed and the engine current idle speed.

[0144] The determining unit 1101 is also used to determine the PID torque control parameters of the target vehicle's idle speed proportional-integral-derivative controller based on the engine idle speed difference.

[0145] The determining unit 1101 is also used to determine the engine demand torque control parameters based on the engine's comprehensive resistance torque, the target generated torque load parameters, and the idle speed PID torque control parameters.

[0146] The control unit 1102 is also used to control the idle speed of the target vehicle by means of engine demand torque control parameters, which include at least one of the following: fuel injection parameters, intake parameters, and ignition parameters.

[0147] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0148] Figure 12 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Figure 12 As shown, the electronic device 1200 includes, but is not limited to, a processor 1201 and a memory 1202.

[0149] The memory 1202 described above is used to store the executable instructions of the processor 1201. It is understood that the processor 1201 is configured to execute instructions to implement the vehicle idling speed control method in the above embodiments.

[0150] It should be noted that those skilled in the art will understand that Figure 12 The electronic device structure shown does not constitute a limitation on the electronic device; the electronic device may include, but is not limited to, other electronic devices. Figure 12 This may indicate more or fewer components, or combinations of certain components, or different component arrangements.

[0151] Processor 1201 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in memory 1202, and by calling data stored in memory 1202, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. Processor 1201 may include one or more processing units. Optionally, processor 1201 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into processor 1201.

[0152] The memory 1202 can be used to store software programs and various data. The memory 1202 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, application programs required by at least one functional module (such as the determination unit 1101, processing unit, etc.), etc. Furthermore, the memory 1202 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0153] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 1202 including instructions, which can be executed by a processor 1201 of an electronic device 1200 to implement the vehicle idling control method in the above embodiments.

[0154] In actual implementation, Figure 11 The functions of the determining unit 1101 and the control unit 1102 can both be determined by... Figure 12 The processor 1201 calls the computer program stored in the memory 1202 to implement the process. The specific execution process can be found in the description of the vehicle idling speed control method in the previous embodiment, and will not be repeated here.

[0155] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a read-only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0156] In an exemplary embodiment, this application also provides a vehicle for implementing the vehicle idling speed control method described above.

[0157] In an exemplary embodiment, this application also provides a computer program product including one or more instructions, which can be executed by the processor 1201 of the electronic device 1200 to complete the vehicle idling speed control method in the above embodiments.

[0158] It should be noted that when one or more instructions in the computer-readable storage medium or computer program product are executed by the processor of the electronic device, they implement the various processes of the above-described vehicle idling speed control method embodiment and achieve the same technical effect as the above-described vehicle idling speed control method. To avoid repetition, they will not be described again here.

[0159] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0160] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0161] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the classified units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0162] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0163] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, essentially, or the part that contributes to the prior art, or a complete or partial classification of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0164] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A vehicle idling speed control method, characterized in that, The method includes: Determine the target charging amount corresponding to the increase of the target vehicle's battery level from the current remaining battery level to the target remaining battery level, and determine the first required power of the target vehicle at the target ambient temperature based on the target charging amount; Based on the current remaining power of the target vehicle and the current first temperature of the battery, a charging power threshold for the target vehicle is determined. The charging power threshold is used to indicate the maximum charging power of the target vehicle under the condition that the target vehicle's power is the current remaining power and the battery temperature is the first temperature. The minimum value between the first required power and the charging power threshold is determined as the target required power of the target vehicle at the target ambient temperature. Based on the target power demand, determine the target power generation torque load parameters corresponding to the target vehicle; Based on the target generator torque load parameters and the state parameters of the target vehicle, the idle speed control of the target vehicle is realized. The state parameters of the target vehicle include at least one of the following: engine comprehensive resistance torque, engine target idle speed, and engine current idle speed. The engine target idle speed is the adjusted idle speed.

2. The method according to claim 1, characterized in that, The step of determining the target power generation torque load parameters corresponding to the target vehicle based on the target power demand includes: Based on the target power demand, determine the first power generation torque load parameter corresponding to the target power demand; Based on the current engine temperature of the target vehicle and the first power generation torque load parameter, the corresponding target power generation torque load parameter is determined from a preset parameter table, which consists of parameters obtained through pre-testing on a test bench.

3. The method according to claim 1, characterized in that, The method of controlling the idle speed of the target vehicle based on the target generator torque load parameters and the state parameters of the target vehicle includes: Based on the target idle speed of the engine and the current idle speed of the engine, the difference in engine idle speed of the target vehicle is determined; Based on the engine idle speed difference, determine the PID torque control parameters of the target vehicle corresponding to the idle speed proportional-integral-derivative controller. Based on the engine's overall resistance torque, the target generator torque load parameters, and the idle speed proportional-integral-derivative (PID) torque control parameters, the engine's required torque control parameters are determined, and the idle speed of the target vehicle is controlled through these parameters. The engine's required torque control parameters include at least one of the following: fuel injection parameters, intake parameters, and ignition parameters.

4. The method according to claim 3, characterized in that, The method further includes: Based on the current idle speed of the target vehicle, the towing torque parameter of the target vehicle is determined, and the towing torque parameter is used to indicate the load torque of the target vehicle at the current idle speed. Based on the altitude and engine temperature of the target vehicle, the reverse towing torque parameter is adjusted to obtain the engine's overall resistance torque.

5. A vehicle idle speed control device, characterized in that, The vehicle idle speed control device includes: a determination unit and a control unit; The determining unit is used to determine the target charging amount corresponding to when the battery level of the target vehicle increases from the current remaining battery level to the target remaining battery level, and to determine the first required power of the target vehicle at the target ambient temperature based on the target charging amount. The determining unit is further configured to determine a charging power threshold for the target vehicle based on the current remaining charge of the target vehicle and the current first temperature of the battery. The charging power threshold is used to indicate the maximum charging power of the target vehicle under the condition that the charge of the target vehicle is the current remaining charge and the temperature of the battery is the first temperature. The determining unit is further configured to determine the minimum value between the first required power and the charging power threshold as the target required power of the target vehicle at the target ambient temperature; The determining unit is further configured to determine the target power generation torque load parameters corresponding to the target vehicle based on the target power demand. The control unit is used to implement idle speed control of the target vehicle based on the target generator torque load parameters and the state parameters of the target vehicle. The state parameters of the target vehicle include at least one of the following: engine comprehensive resistance torque, engine target idle speed, and engine current idle speed. The engine target idle speed is the adjusted idle speed.

6. An electronic device, characterized in that, include: A processor and a memory; wherein the memory is used to store one or more programs, the one or more programs including computer-executable instructions, wherein when the electronic device is running, the processor executes the computer-executable instructions stored in the memory to cause the electronic device to perform the method of any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, When the computer-executable instructions stored in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is capable of performing the method as described in any one of claims 1 to 4.

8. A vehicle, characterized in that, The vehicle is used to implement the method as described in any one of claims 1 to 4.

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