Parking charging method and device and electronic equipment

Abstract

The invention relates to the technical field of power transmission, and discloses a parking charging method and device and electronic equipment. The control method comprises the steps that the current warming-up temperature of an engine is obtained; determining a first required rotating speed of the engine according to the warm-up temperature; according to the first required rotating speed, the actual rotating speed of the engine, the motor power and the battery power, target required power of the engine is determined; under the condition that the warm-up temperature is not higher than the warm-up temperature threshold value, the required torque of the engine is determined according to the target required power and the preset rotating speed threshold value of the engine; and under the condition that the warm-up temperature is higher than the warm-up temperature threshold value, the required torque of the engine is determined according to the target required power and the actual rotating speed of the engine. The problems that in the prior art, an engine cannot be maintained at the current rotating speed under the large load condition; and in a low-temperature and high-altitude environment and under the condition that the torque of the engine is limited, the rotating speed of the engine is unstable, and the torque cannot follow up.

Description

Technical Field

[0001] The present invention relates to the field of power transmission technology, and in particular to a parking charging method, device and electronic equipment. Background Art

[0002] In the absence of charging piles, hybrid vehicles are equipped with a parking charging function to charge the power battery, so that the engine can charge the power battery in the optimal high-efficiency area. Generally, the parking charging process includes the clutch engagement stage, the engine start stage, the engine speed regulation stage and the motor torque adjustment stage; among them, the engine speed regulation stage is used to adjust the engine to the optimal speed.

[0003] In the prior art, the automobile parking charging control method controls the automobile to enter the parking charging state when any one of the preset parking charging conditions is met; the preset parking charging steps are executed in sequence, and in the process of sequentially executing the preset parking charging steps, the cumulative number of parking charging failures is obtained in real time, and the initial value of the cumulative number is 0, and the preset parking charging steps are sequentially divided into a clutch engagement stage, an engine start stage, an engine speed regulation stage, a motor torque adjustment stage and a normal power generation stage; when the cumulative number obtained in real time is greater than the preset number threshold, the execution of the preset parking charging steps is interrupted, and the stage of the interruption node is recorded.

[0004] However, the commonly used speed control strategy for engines in the prior art is engine PID speed control, and the motor does not take any action. Under this speed control strategy, the engine speed is prone to overshoot, the PID parameters are difficult to adjust, and the engine speed is prone to oscillation convergence, causing the front of the vehicle to shake. The engine speed control time is slow, which prolongs the time to reach the optimal charging point of the engine.

[0005] Moreover, the speed control strategy in the existing technology does not take into account the response difference between the engine torque and the motor torque. When the charging power increases, the engine will be overloaded and unable to maintain the current speed. In addition, in low temperature environments, high altitude environments, and when the engine torque is limited, the engine torque response is different from the state after the engine is warmed up under normal conditions, which can easily cause the parking charging engine speed to be unstable and the torque to fail to keep up.

[0006] In view of this, a parking charging method, device and electronic equipment are provided to solve the problem in the prior art that the engine cannot maintain the current speed under heavy load; the engine speed is unstable and the torque cannot keep up in low temperature, high altitude environment and when the engine torque is limited, which has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0007] The present invention provides a parking charging method, device and electronic equipment to solve at least one problem existing in the prior art.

[0008] A first aspect of the present invention provides a parking charging method, comprising: Get the current warm-up temperature of the engine; determining a first required speed of the engine according to the warm-up temperature; Determining a target required power of the engine according to the first required speed, an actual speed of the engine, a motor charging capacity, and a battery charging capacity; When the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the motor according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the motor is determined according to the target required power and the actual speed of the engine.

[0009] According to the parking charging method provided by the present invention, after determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: When the warm-up temperature is higher than the warm-up temperature threshold, the minimum specific fuel consumption speed point of the engine is determined according to the target required power and the corresponding relationship between the target required power and the specific fuel consumption speed point.

[0010] According to the parking charging method provided by the present invention, after determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: When the warm-up temperature is higher than the warm-up temperature threshold, determining a second required speed of the engine according to the target required power and a corresponding relationship between the target required power and a target speed of the engine; The larger one of the first required speed and the second required speed is used as the target required speed of the engine.

[0011] According to the parking charging method provided by the present invention, determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power includes: Determining a first required power of the engine according to the first required speed and a corresponding relationship between the required speed and the target power; determining a second required power of the engine according to an actual speed of the engine and a corresponding relationship between the actual speed and the target power; determining a third required power of the engine according to the motor charging capacity and the corresponding relationship between the motor power and the target power; determining a fourth required power of the engine according to the battery charging capacity and a corresponding relationship between the battery power and the target power; The target required power of the engine is determined according to a mathematical relationship among the first required power, the second required power, the third required power and the fourth required power.

[0012] According to the parking charging method provided by the present invention, determining the target required power of the engine according to the mathematical relationship among the first required power, the second required power, the third required power and the fourth required power includes: According to the magnitude relationship among the first required power, the second required power, the third required power and the fourth required power, the minimum required power is used as the target required power of the engine.

[0013] According to the parking charging method provided by the present invention, determining the first required speed of the engine according to the warm-up temperature includes: A first required speed of the engine is determined according to the warm-up temperature and a corresponding relationship between the warm-up temperature and a target speed of the engine.

[0014] A second aspect of the present invention provides a parking charging control device, comprising: An information acquisition module is used to obtain the current warm-up temperature of the engine; A first determining module, configured to determine a first required speed of the engine according to the warm-up temperature; a second determining module, configured to determine a target required power of the engine according to the first required speed, an actual speed of the engine, a motor charging capacity, and a battery charging capacity; The third determination module is used to determine the required torque of the engine according to the target required power and a preset speed threshold of the engine when the warm-up temperature is not higher than the warm-up temperature threshold; and is also used to determine the required torque of the engine according to the target required power and the actual speed of the engine when the warm-up temperature is higher than the warm-up temperature threshold.

[0015] A third aspect of the present invention provides a hybrid vehicle, comprising an engine; the engine is controlled in speed by any one of the parking charging methods described above.

[0016] A fourth aspect of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the parking charging method as described in any one of the above items when executing the computer program.

[0017] A fifth aspect of the present invention is a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the parking charging method as described in any one of the above items.

[0018] The parking charging method, control device and electronic device provided by the present invention first determine the first required speed of the engine according to the acquired warm-up temperature; then determine the target required power of the engine according to the first required speed, the actual speed of the engine, the motor charging capacity and the battery charging capacity; then, determine the required torque of the motor according to the comparison result of the warm-up temperature and the warm-up temperature threshold. Specifically, when the warm-up temperature is not higher than the warm-up temperature threshold, the required torque of the motor is determined according to the target required power and the preset speed threshold of the engine; when the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the motor is determined according to the target required power and the actual speed of the engine. Not only can the response difference between the engine torque and the motor torque existing in the prior art be solved, when the charging power rises, the problem that the engine cannot be maintained at the current speed due to excessive load can also be solved in low temperature environment, high altitude environment, the engine torque is limited, the engine torque response is different from the state after the warm-up under normal conditions, which is easy to cause the parking charging engine speed to be unstable and the torque cannot keep up. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is one of the flow charts of the parking charging method provided by the present invention.

[0021] Figure 2 This is the second flow chart of the parking charging method provided by the present invention.

[0022] Figure 3 This is the third flow chart of the parking charging method provided by the present invention.

[0023] Figure 4 It is a structural schematic diagram of the parking charging control device provided by the present invention.

[0024] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the embodiments of the present invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. In the textual description of the present invention, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be noted that the serial numbers themselves, such as "first", "second", etc., used to distinguish the objects described in the present invention are only used to distinguish the objects described, and do not have any order or technical meaning.

[0027] Combine the following Figures 1 to 5 The parking charging method, control device and electronic device of the present invention are described in detail. The execution subject of the parking charging method is an electronic device. The electronic device can be a personal computer (PC), a portable device, a laptop computer, a smart phone, a tablet computer and other devices; the server can refer to a server, or a server cluster composed of multiple servers, a cloud server, and the like. The present invention does not specifically limit the specific form of the electronic device or the server. Furthermore, the parking charging method can also be applied to a parking charging control device provided in an electronic device or a server, and the parking charging control device can be implemented by software, hardware or a combination of the two. The following describes the parking charging method by taking the execution subject of the parking charging method as a parking charging control device as an example.

[0028] A hybrid vehicle is a vehicle that uses both gasoline and electricity as its driving modes. The power system of a hybrid vehicle includes an engine module, a motor module, and a battery module. An engine is a machine that converts other forms of energy into mechanical energy, such as an internal combustion engine, which usually converts chemical energy into mechanical energy. An engine is suitable for a power generation device. A motor is a general term for a device that converts electrical energy into mechanical energy. When a motor works with positive torque, it is equivalent to an electric motor, which can convert electrical energy into mechanical energy to drive the vehicle. When a motor works with negative torque, it is equivalent to a generator, which can convert mechanical energy into electrical energy to charge the battery. By using motors in hybrid vehicles, the power system can regulate the motors according to the actual operating conditions of the vehicle, and keep the engine operating in the best comprehensive performance area.

[0029] When the hybrid vehicle completes high-voltage power-up and is stationary, if the high-voltage battery SOC (State of Charge, charging state or remaining power) is too low, the parking charging function is turned on, and the vehicle control unit (HCU) will control the engine to start and drive the generator to generate electricity to charge the high-voltage battery. At this time, the vehicle is in the parking charging state. Until the high-voltage battery SOC reaches a certain target value, the HCU will control the engine to stop and the generator to stop charging to avoid the high-voltage battery power feeding and maintain the vehicle's high-voltage battery SOC balance.

[0030] like Figures 1 to 3 As shown, the first aspect of the present invention provides a parking charging method. The parking charging method comprises the following steps: Figure 3 shown.

[0031] First, determine whether the vehicle is parked. If the vehicle is parked, determine whether the SOC meets the requirements. If the SOC does not meet the requirements, determine whether the parking charging function is turned on. Once the parking charging function is turned on, proceed to the following steps.

[0032] Determine whether the engine speed control is on. If not, return to the start stage. If on, the following steps can be used to control the speed, such as Figure 1 shown.

[0033] S210: Obtain the current warm-up temperature of the engine.

[0034] Specifically, the water temperature of the engine is obtained. Preferably, the temperature sensor collects the water temperature of the engine, and the parking charging control device obtains the water temperature of the engine from the temperature sensor, and uses the water temperature as the warm-up temperature of the engine.

[0035] S220: Determine a first required engine speed according to the warm-up temperature.

[0036] like Figure 2As shown, specifically, the first required speed of the engine is determined according to the warm-up temperature and the corresponding relationship between the warm-up temperature and the target speed of the engine.

[0037] It should be noted that the correspondence between the warm-up temperature and the target engine speed is preset in the parking charge control device in advance and can be directly retrieved when in use.

[0038] S230: Determine a target required power of the engine according to the first required speed, the actual speed of the engine, the motor power, and the battery power.

[0039] The parking charge control device is used to determine the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power.

[0040] like Figure 2 Specifically, according to the first required speed and the corresponding relationship between the first required speed and the target power, determining the first required power of the engine includes: S231, determining a first required power of the engine according to the first required speed and a corresponding relationship between the first required speed and the target power; S232, determining a second required power of the engine according to an actual speed of the engine and a corresponding relationship between the actual speed and the target power; S233, determining a third required power of the engine according to the motor power and the corresponding relationship between the motor power and the target power; S234, determining a fourth required power of the engine according to the battery power and the corresponding relationship between the battery power and the target power; S235 . Determine a target required power of the engine according to a mathematical relationship among the first required power, the second required power, the third required power and the fourth required power.

[0041] It should be noted that the correspondence between the first required speed and the target power, the correspondence between the actual speed and the target power, the correspondence between the motor power and the target power, and the correspondence between the battery power and the target power are all preset in the parking charging control device in advance and can be directly called up when in use.

[0042] In this embodiment, the target required power of the engine is determined based on the first required speed, the actual speed of the engine, the motor power and the battery power, which can ensure that before the engine reaches the maximum target speed, the negative torque output by the motor can avoid the risk of engine speed dropping due to the engine temporarily being unable to output the corresponding torque, and solves the problem of the response difference between the engine torque and the motor torque. When the charging power increases, the engine will be overloaded and unable to maintain the current speed.

[0043] Further, the mathematical relationship may include, but is not limited to, a weighted sum, a maximum value, a minimum value, or an average value.

[0044] Specifically, determining the target required power of the engine according to the mathematical relationship among the first required power, the second required power, the third required power, and the fourth required power includes: According to the magnitude relationship between the first power requirement, the second power requirement, the third power requirement and the fourth power requirement, the minimum power requirement is used as the target power requirement of the engine. This ensures that before the engine reaches the maximum target speed, the negative torque output by the motor can avoid the risk of engine speed drop caused by the engine temporarily being unable to output the corresponding torque.

[0045] Furthermore, the motor power may refer to the rated charging power of the motor. P1 Among them, the rated charging power of the motor is P1 It is calculated by the motor torque calculation formula (1).

[0046] Formula (1).

[0047] In formula (1), T1 is the motor charging torque limit, and n1 is the current actual speed of the motor.

[0048] Furthermore, battery power can refer to the rated charging power of the battery. P2 Among them, the rated charging power of the battery P2 It is calculated by formula (2).

[0049] Formula (2).

[0050] In formula (2), V is the current voltage of the battery, and I is the charging current limit of the battery.

[0051] S240, when the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the engine according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine.

[0052] The parking charging control device is used to determine the required torque of the engine based on the target required power and the preset speed threshold of the engine when the warm-up temperature is not higher than the warm-up temperature threshold; it is also used to determine the required torque of the engine based on the target required power and the actual speed of the engine when the warm-up temperature is higher than the warm-up temperature threshold.

[0053] It should be noted that the preset speed threshold is preset in the parking charging control device in advance and can be directly called for use. The preset speed threshold is usually greater than the target engine speed corresponding to the target required power, and in a low temperature environment, the response difference between the engine torque and the motor torque can be reduced.

[0054] It should be noted that the absolute value of the torque of the engine is equal to the torque of the motor. The charging torque output by the engine is positive, and the charging torque output by the motor is negative. Therefore, after the required torque of the engine is determined, the required torque of the motor can also be determined, and the required torque of the motor is the charging torque output by the motor.

[0055] This embodiment determines the required torque of the engine according to the comparison result of the warm-up temperature and the warm-up temperature threshold, and can ensure the dynamic adjustment of the parking power itself based on the relationship between the target required power and the actual speed of the engine, thereby solving the problem of engine torque being limited in low temperature environment and high altitude environment. The engine torque response is different from the state after the warm-up under normal conditions, which can easily cause the parking charging engine speed to be unstable and the torque cannot keep up. The adaptability of the whole vehicle in high temperature, plateau and cold environment is improved, and the problem of frequent fluctuations in engine speed is solved.

[0056] In this embodiment, first, the first required speed of the engine is determined according to the obtained warm-up temperature; then, the target required power of the engine is determined according to the first required speed, the actual speed of the engine, the motor power and the battery power; then, the required torque of the engine is determined according to the comparison result between the warm-up temperature and the warm-up temperature threshold. Specifically, when the warm-up temperature is not higher than the warm-up temperature threshold, the required torque of the motor is determined according to the target required power and the preset speed threshold of the engine; when the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine. It can not only solve the problem of the response difference between the engine torque and the motor torque existing in the prior art, when the charging power rises, the engine will be overloaded and cannot be maintained at the current speed, but also solve the problem of the engine torque being limited in low temperature environment, high altitude environment, and the engine torque response is different from the state after the warm-up under normal conditions, which is easy to cause the parking charging engine speed to be unstable and the torque cannot keep up.

[0057] like Figure 2 As shown, further, S240 specifically includes: S241. The parking charging control device determines whether the warm-up temperature is not higher than the warm-up temperature threshold; if so, proceed to S242; if not, proceed to S243.

[0058] S242: The parking charging control device determines the required torque of the engine according to the target required power and a preset speed threshold of the engine.

[0059] S243: The parking charge control device determines the required torque of the engine according to the target required power and the actual speed of the engine. Specifically, the parking charge control device calculates the required torque of the engine according to formula (3).

[0060] Formula (3).

[0061] In formula (3), P3 is the target required power, T3 is the required torque of the engine, and n3 is the actual speed of the engine.

[0062] like Figure 2 As shown, in some embodiments, after determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: S244. When the warm-up temperature is higher than the warm-up temperature threshold, the minimum specific fuel consumption speed point of the engine is determined according to the target demand power and the corresponding relationship between the target demand power and the specific fuel consumption speed point. Under the same power, the fuel consumption of the engine can be reduced to ensure a better fuel saving rate. Specifically, the parking charging control device is used to determine the minimum specific fuel consumption speed point of the engine according to the target demand power and the corresponding relationship between the target demand power and the specific fuel consumption speed point when the warm-up temperature is higher than the warm-up temperature threshold.

[0063] It should be noted that the correspondence between the target required power and the specific fuel consumption speed point is preset in the parking charging control device in advance and can be directly called when in use.

[0064] like Figure 2 As shown, in some embodiments, after determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: S245, when the warm-up temperature is higher than the warm-up temperature threshold, determining a second required speed of the engine according to the target required power and the corresponding relationship between the target required power and the target speed of the engine; S246: The larger of the first required speed and the second required speed is used as the target required speed of the engine. During the parking charging process, the engine and the motor can be maintained at a certain speed point to continuously operate, avoiding frequent speed fluctuations.

[0065] like Figure 4As shown, the second invention of the present invention provides a parking charging control device. The parking charging control device includes an information acquisition module, a first determination module, a second determination module and a third determination module. The information acquisition module is used to obtain the current warm-up temperature of the engine. The first determination module is used to determine the first required speed of the engine according to the warm-up temperature. The second determination module is used to determine the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power. The third determination module is used to determine the required torque of the engine according to the target required power and the preset speed threshold of the engine when the warm-up temperature is not higher than the warm-up temperature threshold; it is also used to determine the required torque of the engine according to the target required power and the actual speed of the engine when the warm-up temperature is higher than the warm-up temperature threshold.

[0066] A specific embodiment of the third aspect of the present invention provides a hybrid vehicle. The hybrid vehicle includes an engine; the engine has its speed controlled by the parking charging method of any of the above embodiments.

[0067] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the parking charging method, which includes: Get the current warm-up temperature of the engine; determining a first required speed of the engine according to the warm-up temperature; Determining a target required power of the engine according to the first required speed, the actual speed of the engine, the motor power, and the battery power; When the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the engine according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine.

[0068] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0069] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the parking charging method provided by the above methods, the method includes: Get the current warm-up temperature of the engine; determining a first required speed of the engine according to the warm-up temperature; Determining a target required power of the engine according to the first required speed, the actual speed of the engine, the motor power, and the battery power; When the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the engine according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine.

[0070] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the parking charging method provided by the above methods is implemented, and the method includes: Get the current warm-up temperature of the engine; determining a first required speed of the engine according to the warm-up temperature; Determining a target required power of the engine according to the first required speed, the actual speed of the engine, the motor power, and the battery power; When the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the engine according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine.

[0071] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0072] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these 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 invention.

Claims

1. A parking charging method, characterized in that: include: Get the current warm-up temperature of the engine; determining a first required speed of the engine according to the warm-up temperature; Determining a target required power of the engine according to the first required speed, the actual speed of the engine, the motor power, and the battery power; When the warm-up temperature is not higher than the warm-up temperature threshold, determining the required torque of the engine according to the target required power and a preset speed threshold of the engine; When the warm-up temperature is higher than the warm-up temperature threshold, the required torque of the engine is determined according to the target required power and the actual speed of the engine.

2. The parking charging method according to claim 1, characterized in that: After determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: When the warm-up temperature is higher than the warm-up temperature threshold, the minimum specific fuel consumption speed point of the engine is determined according to the target required power and the corresponding relationship between the target required power and the specific fuel consumption speed point.

3. The parking charging method according to claim 1, characterized in that: After determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power, the method further includes: When the warm-up temperature is higher than the warm-up temperature threshold, determining a second required speed of the engine according to the target required power and a corresponding relationship between the target required power and the target speed of the engine; The larger one of the first required speed and the second required speed is used as the target required speed of the engine.

4. The parking charging method according to claim 1, characterized in that: The determining the target required power of the engine according to the first required speed, the actual speed of the engine, the motor power and the battery power includes: Determining a first required power of the engine according to the first required speed and a corresponding relationship between the required speed and the target power; determining a second required power of the engine according to an actual speed of the engine and a corresponding relationship between the actual speed and the target power; determining a third required power of the engine according to the motor charging capacity and the corresponding relationship between the motor power and the target power; determining a fourth required power of the engine according to the battery charging capacity and a corresponding relationship between the battery power and the target power; The target required power of the engine is determined according to a mathematical relationship among the first required power, the second required power, the third required power and the fourth required power.

5. The parking charging method according to claim 4, characterized in that: Determining the target required power of the engine according to the mathematical relationship among the first required power, the second required power, the third required power and the fourth required power includes: According to the magnitude relationship among the first required power, the second required power, the third required power and the fourth required power, the minimum required power is used as the target required power of the engine.

6. The parking charging method according to any one of claims 1 to 5, characterized in that: The step of determining a first required speed of the engine according to the warm-up temperature includes: A first required speed of the engine is determined according to the warm-up temperature and a corresponding relationship between the warm-up temperature and a target speed of the engine.

7. A parking charging control device, characterized in that: include: An information acquisition module is used to obtain the current warm-up temperature of the engine; A first determination module, configured to determine a first required speed of the engine according to the warm-up temperature; a second determination module, configured to determine a target required power of the engine according to the first required speed, an actual speed of the engine, a motor power, and a battery power; The third determination module is used to determine the required torque of the engine according to the target required power and a preset speed threshold of the engine when the warm-up temperature is not higher than the warm-up temperature threshold; and is also used to determine the required torque of the engine according to the target required power and the actual speed of the engine when the warm-up temperature is higher than the warm-up temperature threshold.

8. A hybrid vehicle, characterized in that: It comprises an engine; the engine speed is controlled by the parking charging method according to any one of claims 1 to 6.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the parking charging method according to any one of claims 1 to 6 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the parking charging method according to any one of claims 1 to 6 is implemented.

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