A hybrid vehicle control method, device, equipment and storage medium

Abstract

The present application relates to the field of vehicle control technology, and in particular to a hybrid vehicle control method, device, equipment and storage medium for controlling the temperature of a hybrid vehicle. The disclosed embodiment obtains the temperature of at least one electric drive system component in a hybrid vehicle; based on the temperature of at least one electric drive system component, determines the temperature stage of the electric drive system of the hybrid vehicle in multiple preset temperature stages; if the temperature stage of the electric drive system is a stage to be cooled, then based on the mapping relationship between the preset stage to be cooled and the electric drive function to be restricted, determines the electric drive function to be restricted corresponding to the electric drive system in the stage to be cooled, and restricts it.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle control technology, and in particular to a hybrid vehicle control method, device, equipment and storage medium. Background Art

[0002] A hybrid vehicle is a new type of vehicle that combines a traditional fuel engine with an electric drive system. Its electric drive system and power transmission are one of its core technologies. The energy-saving and low-emission features of hybrid vehicles have attracted great attention in the automotive industry and have become a focus of automotive research and development.

[0003] However, in the prior art, when the temperature of a hybrid vehicle is high, the thermal management system of the vehicle may malfunction, thereby triggering a power-limiting state of the vehicle, affecting the vehicle's dynamic performance and driving comfort.

[0004] Therefore, how to control the temperature of hybrid vehicles is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the present disclosure is to provide a hybrid electric vehicle control method, device, equipment and storage medium for controlling the temperature of the hybrid electric vehicle.

[0006] In a first aspect, the present disclosure provides a hybrid vehicle control method, the method comprising:

[0007] obtaining a temperature of at least one electric drive system component in a hybrid electric vehicle;

[0008] Based on the temperature of the at least one electric drive system component, determining a temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages;

[0009] If the temperature stage of the electric drive system is the cooling stage, based on a preset mapping relationship between the cooling stage and the electric drive function to be restricted, the electric drive function to be restricted corresponding to the electric drive system in the cooling stage is determined and restricted.

[0010] In a possible implementation, determining the temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages based on the temperature of the at least one electric drive system component includes:

[0011] For any electric drive system component, determining the temperature stage of the any electric drive system component by comparing the temperature of the any electric drive system component with a plurality of temperature thresholds corresponding to the any electric drive system component, wherein the plurality of temperature thresholds are used to divide the plurality of temperature stages;

[0012] The highest temperature stage among the temperature stages in which the at least one electric drive system component is located is taken as the temperature stage in which the electric drive system is located.

[0013] In a possible implementation, the multiple temperature stages include multiple temperature reduction stages, and different temperature reduction stages correspond to different electric drive functions to be restricted; and determining the electric drive function to be restricted corresponding to the electric drive system in the temperature reduction stage based on a preset mapping relationship between the temperature reduction stage and the electric drive function to be restricted includes:

[0014] Based on the preset mapping relationship between each of the multiple cooling stages and the electric drive function to be restricted, the electric drive function to be restricted corresponding to the cooling stage of the electric drive system is determined; the electric drive function to be restricted corresponding to the electric drive system includes at least one of motor-driven power generation, pure electric starting, electric drive gear shifting and speed regulation, and motor reverse dragging of the engine.

[0015] In a possible implementation, the multiple cooling stages include a first cooling stage, a second cooling stage and a third cooling stage, the temperature corresponding to the first cooling stage is lower than the temperature corresponding to the second cooling stage, the temperature corresponding to the second cooling stage is lower than the temperature corresponding to the third cooling stage; the electric drive function to be restricted corresponding to the first cooling stage is motor-driven power generation, the electric drive function to be restricted corresponding to the second cooling stage is motor-driven power generation and pure electric starting, and the electric drive function to be restricted corresponding to the third cooling stage is motor-driven power generation, pure electric starting, electric-driven gear shifting and speed regulation, and motor reverse dragging of the engine.

[0016] In a possible implementation, the motor driving power generation is limited in the following manner:

[0017] Based on the temperature of at least one reference electric drive system component and the preset mapping relationship between different temperatures of the electric drive system component and the motor torque weight, determine the motor torque weight corresponding to each of the at least one reference electric drive system components; the reference electric drive system component is an electric drive system component in the at least one electric drive system component that is in the same stage to be cooled as the electric drive system;

[0018] The minimum motor torque weight among the motor torque weights corresponding to the at least one reference electric drive system component is used as the motor torque weight corresponding to the electric drive system, and the initial motor torque distribution amount is adjusted based on the motor torque weight corresponding to the electric drive system to obtain a target motor torque distribution amount; the target motor torque distribution amount is less than the initial motor torque distribution amount;

[0019] The motor is controlled based on the target motor torque distribution amount so that the motor drives the hybrid vehicle based on a torque amount less than or equal to the target motor torque distribution amount, or so that the motor generates electricity based on a torque amount less than or equal to the target motor torque distribution amount.

[0020] In a possible implementation, the hybrid electric vehicle further includes at least one heat dissipation component, the multiple temperature stages include multiple stages to be cooled; when the electric drive system is in the stage to be cooled, the method further includes:

[0021] Based on the preset mapping relationship between each of the plurality of cooling stages and the cooling components, determining a target cooling component corresponding to the cooling stage of the electric drive system, wherein the target cooling component includes at least one of a cooling fan, a cooling water pump and a compressor;

[0022] For any reference electric drive system component, based on the temperature of the any reference electric drive system component, the target heat dissipation component and a preset mapping relationship between the temperature of the any reference electric drive system component and the rotation speed of the heat dissipation component, determine the reference rotation speed of the target heat dissipation component corresponding to the any reference electric drive system component; the reference electric drive system component is an electric drive system component in the electric drive system components that is in the same stage of cooling down as the electric drive system;

[0023] Based on the reference rotational speed of the target heat dissipation component corresponding to each of the reference electric drive system components, a target rotational speed of the target heat dissipation component is determined, and the target heat dissipation component is controlled based on the target rotational speed to reduce the temperature of the electric drive system.

[0024] In a possible implementation, if the target heat dissipation component includes multiple ones of a heat dissipation fan, a cooling water pump, and a compressor, determining the target speed of the target heat dissipation component based on the reference speed of the target heat dissipation component corresponding to each of the reference electric drive system components includes:

[0025] For any target heat dissipation component, the maximum reference rotational speed among the reference rotational speeds of any target heat dissipation component corresponding to each of the reference electric drive system components is used as the target rotational speed of the target heat dissipation component.

[0026] In a second aspect, the present disclosure provides a hybrid vehicle control device, comprising:

[0027] An acquisition module, used to acquire a temperature of at least one electric drive system component in a hybrid electric vehicle;

[0028] a determination module, configured to determine a temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages based on the temperature of the at least one electric drive system component;

[0029] The restriction module is used to determine the electric drive function to be restricted corresponding to the electric drive system in the cooling stage based on the preset mapping relationship between the cooling stage and the electric drive function to be restricted, and restrict it if the temperature stage of the electric drive system is the cooling stage.

[0030] In a third aspect, an embodiment of the present disclosure provides a hybrid vehicle control device, comprising: a processor; a memory for storing processor executable instructions; wherein the processor implements the steps of the above hybrid vehicle control method by running the executable instructions.

[0031] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the above-mentioned hybrid vehicle control method.

[0032] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0033] The present disclosure can control the temperature of the electric drive system more accurately by pre-dividing the temperature into multiple stages. After determining the stage to be cooled down in which the electric drive system is located, the electric drive function to be restricted corresponding to the stage to be cooled down is determined and restricted, which can effectively reduce the heat generation of the hybrid vehicle, thereby achieving effective control of the temperature of the hybrid vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of the structure of a hybrid vehicle provided by an embodiment of the present disclosure;

[0036] Figure 2 A flow chart of a hybrid vehicle control method provided by an embodiment of the present disclosure;

[0037] Figure 3 A flow chart of a temperature determination stage provided in an embodiment of the present disclosure;

[0038] Figure 4 A flow chart of limiting motor-driven power generation provided in an embodiment of the present disclosure;

[0039] Figure 5 A flow chart of controlling a heat dissipation component provided in an embodiment of the present disclosure;

[0040] Figure 6 A schematic diagram of a thermal management structure of a hybrid vehicle provided by an embodiment of the present disclosure;

[0041] Figure 7 An overall flow chart of controlling the temperature of a hybrid vehicle provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the protection scope of the present disclosure.

[0043] The following are explanations of some of the terms that appear in the text:

[0044] 1. In the embodiments of the present disclosure, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0045] 2. The terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein.

[0046] 3. Microcontroller Unit (MCU), also known as single-chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer.

[0047] 4. ECU is the Engine Control Unit. HCU is the abbreviation of Hydraulic Electronic Control Unit, which is mainly used to control the braking system of the car.

[0048] 5. TCU (Telematics Control Unit), also known as telematics control unit, is a key component in modern vehicles used to manage internal connections between multiple modules and subsystems.

[0049] 6. CCU (Clutch Control Unit), also known as clutch controller, is part of the clutch control system and is responsible for managing and controlling the vehicle's clutch operation.

[0050] 7. DCAC (Direct Current-Alternating Current Converter) refers to a DC-AC converter, whose main function is to convert direct current into alternating current.

[0051] 8. BMS is the abbreviation of Battery Management System, which is a key system of the battery system in electric vehicles or hybrid vehicles.

[0052] 9. CAN is the abbreviation of Controller Area Network, which is a commonly used communication protocol in automobiles.

[0053] 10. Integrated thermal management: Corresponding to the distributed thermal management system, each component has its own thermal management system; the integrated thermal management system is a thermal management system formed by two or more systems through control valves.

[0054] 11. Shut-off valve: Cooling system switch. When opened, refrigerant enters the circuit to control the cooling of components.

[0055] 12. Warm water valve: The switch of the heating system, when opened, forms a water circulation loop and can control the heating of components.

[0056] 13. Radiator: dissipates heat and cools the circulating water.

[0057] 14. Fan group: The cooling fan cools down the radiator. The fan group can be driven by the engine through a pulley or by a high-voltage motor.

[0058] 15. Heat exchanger: A device that transfers heat from a hot body to a cold fluid. It is an industrial application of convective heat transfer and heat conduction.

[0059] 16. Compressor: A driven fluid machine that boosts low-pressure gas to high-pressure gas. It is the heart of the refrigeration system.

[0060] 17. Condenser: A component of a refrigeration system, a type of input heat exchanger that can convert gas or steam into liquid and transfer the heat in the tube to the air in a very fast manner.

[0061] 18. Hybrid heavy trucks: The mechanical power system of traditional cars is fuel tank-engine-transmission-final reducer to wheels. In addition to the traditional mechanical power system, the hybrid car transmission system adds an electric path power system of battery-motor-transmission-final reducer-wheel.

[0062] 19. Gearbox: A variable speed transmission mechanism that can be operated by a shift mechanism, which can amplify or reduce the speed and torque of the input shaft or output shaft.

[0063] 20. Clutch: The clutch on a heavy truck is a mechanical device that connects the engine and the gearbox input shaft. It consists of a driving disc and a driven disc. The driving disc is fixedly connected to the engine, and the driven disc is fixedly connected to the gearbox input shaft. Its main functions include interrupting power transmission, starting the vehicle smoothly, and transmitting engine power to the gearbox.

[0064] 21. Clutch control: mainly refers to controlling the speed and target position of clutch separation and engagement. This part of the control is achieved through the clutch's intake and exhaust solenoid valves.

[0065] 22. Clutch actuator: It includes cylinder, clutch solenoid valve, connecting rod, etc. Its function is to control the separation or combination of the clutch driven plate and the driving plate.

[0066] 23. Vehicle control mode: It is divided into pure electric control mode, engine control mode and hybrid power control mode. When the motor alone drives the vehicle, it is called pure electric control mode, when the engine alone drives the vehicle, it is called engine control mode, and when both drive the vehicle together, it is called hybrid power control mode.

[0067] 24. Gear shifting and speed regulation: As one of the processes of gear shifting, the motor adjusts the speed of the input shaft before shifting the gear so that the speed difference between the input shaft and the output shaft is within a certain range. The speed regulation function is performed by the engine in traditional fuel vehicles, while that is generally performed by the motor in new energy vehicles. The motor has faster responsiveness and accuracy.

[0068] 25. Pure electric start: When a hybrid vehicle is in pure electric mode, the motor drives the vehicle to start from a standstill. Pure electric start is more comfortable because there is no engine intervention.

[0069] 26. Motor-driven power generation (driving motor assist or power generation): The process in which the motor generates electricity or drives the vehicle together with the engine during vehicle operation.

[0070] 27. The motor reverses the engine, which is the process of driving or starting the internal combustion engine by the electric motor.

[0071] The application scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the emergence of new application scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems. In the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is two or more.

[0072] A hybrid vehicle is a new type of vehicle that combines a traditional fuel engine with an electric drive system. Its electric drive system and power transmission are one of its core technologies. The energy-saving and low-emission features of hybrid vehicles have attracted great attention in the automotive industry and have become a focus of automotive research and development.

[0073] However, in the prior art, when the temperature of a hybrid vehicle is high, the thermal management system of the vehicle may malfunction, thereby triggering a power-limiting state of the vehicle, affecting the vehicle's dynamic performance and driving comfort.

[0074] Therefore, how to control the temperature of hybrid vehicles is an urgent problem to be solved.

[0075] In order to solve the above problems, the present disclosure provides a hybrid electric vehicle control method, device, equipment and storage medium for controlling the temperature of the hybrid electric vehicle.

[0076] The disclosed embodiment can control the temperature of the electric drive system more accurately by pre-dividing the temperature into multiple stages. After determining the stage to be cooled down in which the electric drive system is located, the electric drive function to be restricted corresponding to the stage to be cooled down is determined and restricted, which can effectively reduce the heat generation of the hybrid vehicle, thereby achieving effective temperature control of the hybrid vehicle.

[0077] It should be noted that the electric drive system in a hybrid vehicle mainly includes components such as motors, battery packs and controllers, which work together to provide power.

[0078] See first Figure 1 , a schematic diagram of the structure of a hybrid vehicle according to an embodiment of the present disclosure. Figure 1 Taking the transmission system of the hybrid heavy truck P2 as an example, the hybrid vehicle control method of the present application is applied to the micro control unit ( Figure 1 MCU shown).

[0079] Optionally, the hybrid vehicle control device in the embodiment of the present disclosure may be a microcontroller unit (MCU), also known as a single chip microcomputer or a single chip microcomputer.

[0080] in, Figure 1 The ECU in the text is the Engine Control Unit. HCU is the abbreviation of Hydraulic Electronic Control Unit, which is mainly used to control the brake system of the car. TCU (Telematics Control Unit), that is, the telematics control unit, is a key component in modern vehicles for managing the internal connections between multiple modules and subsystems. CCU (Clutch Control Unit), that is, the clutch controller, is part of the clutch control system and is responsible for managing and controlling the clutch operation of the vehicle. DCAC (Direct Current-Alternating Current Converter) refers to the DC-AC converter, and its main function is to convert DC power into AC power. BMS is the abbreviation of Battery Management System, which is a key system of the battery system in electric vehicles or hybrid vehicles. CAN is the abbreviation of Controller Area Network, which is a commonly used communication protocol in automobiles.

[0081] It should be noted that Figure 1 The motor in the vehicle can be a drive motor or a generator in different modes. When it is a drive motor, it is used to drive the vehicle, and when it is a generator, it is used to generate electricity. The drive motor and the generator can be switched between modes through an inverter and a rectifier.

[0082] like Figure 2 As shown, a flow chart of a hybrid vehicle control method according to an embodiment of the present disclosure is provided. The hybrid vehicle control method is applied to a microcontroller unit, and the specific steps are as follows:

[0083] Step S201, obtaining the temperature of at least one electric drive system component in the hybrid electric vehicle.

[0084] Optionally, the electric drive system component in the embodiment of the present disclosure may be a power battery, a motor or a motor controller in the electric drive system.

[0085] Among them, the motor controller unit is an integrated circuit that actively controls the motor to work in a set direction, speed, and response time.

[0086] In practice, the disclosed embodiment collects the temperature of each electric drive system component through at least one sensor, and the sensor transmits the collected temperature of the electric drive system component to the microcontroller unit, so that the microcontroller unit obtains the temperature of at least one electric drive system component in the hybrid vehicle.

[0087] Exemplarily, sensor 1 collects the temperature of the power battery and transmits it to the micro control unit, sensor 2 collects the temperature of the motor and transmits it to the micro control unit, and sensor 3 collects the temperature of the motor controller and transmits it to the micro control unit.

[0088] Step S202 : determining a temperature stage of the electric drive system of the hybrid vehicle from among a plurality of preset temperature stages based on the temperature of at least one electric drive system component.

[0089] The multiple temperature stages include multiple cooling stages.

[0090] like Figure 3 As shown, a flow chart of determining a temperature stage according to an embodiment of the present disclosure, the specific steps are as follows:

[0091] Step S301 : for any electric drive system component, by comparing the temperature of any electric drive system component with a plurality of temperature thresholds corresponding to any electric drive system component, the temperature stage of any electric drive system component is determined.

[0092] Among them, multiple temperature thresholds are used to divide multiple temperature stages.

[0093] It should be noted that each electric drive system component corresponds to its own multiple temperature thresholds, the multiple temperature thresholds corresponding to each electric drive component are different, and the multiple temperature thresholds corresponding to different electric drive system components may be different.

[0094] Exemplarily, for a motor, the temperature stage of the motor is determined by comparing the temperature of the motor with a plurality of temperature thresholds corresponding to the motor.

[0095] For example, the multiple temperature thresholds corresponding to the motor may be T1, T2, and T3, and T1<T2<T3.

[0096] The disclosed embodiment exemplifies multiple temperature thresholds corresponding to the electric battery, the motor, and the motor controller. For example, T1 corresponding to the electric battery may be 60°C, T2 may be 62°C, and T3 may be 64°C. T1 corresponding to the motor may be 135°C, T2 may be 137°C, and T3 may be 139°C. T1 corresponding to the motor controller may be 80°C, T2 may be 82°C, and T3 may be 84°C.

[0097] It should be noted that the multiple temperature thresholds corresponding to each electric drive system component in the embodiment of the present disclosure are determined by statistically analyzing the temperature of the electric drive system components in actual use. The values ​​of the above-mentioned temperature thresholds are only examples and do not limit the values ​​of the temperature thresholds actually used in the present disclosure. Optionally, the multiple cooling stages in the embodiment of the present disclosure include a first cooling stage, a second cooling stage, and a third cooling stage, and the temperature corresponding to the first cooling stage is lower than the temperature corresponding to the second cooling stage, and the temperature corresponding to the second cooling stage is lower than the temperature corresponding to the third cooling stage.

[0098] The multiple temperature stages may also include a normal stage, in which the functions of the electric drive system are not restricted.

[0099] The disclosed embodiment divides a plurality of temperature stages by a plurality of temperature thresholds. For example, a temperature stage less than T1 is taken as a normal stage, a temperature stage not less than T1 and less than T2 is taken as a first stage to be cooled down, a temperature stage not less than T2 and less than T3 is taken as a second stage to be cooled down, and a temperature stage not less than T3 is taken as a third stage to be cooled down.

[0100] Exemplarily, if the motor temperature is 136, by comparing the motor temperature with a plurality of temperature thresholds corresponding to the motor, it is determined that the temperature stage of the motor is the first stage to be cooled down [135, 137).

[0101] By analogy, for other electric drive system components, the temperature of the other electric drive system components can be compared with the corresponding multiple temperature thresholds to determine the temperature stage of the other electric drive system components.

[0102] Step S302: taking the highest temperature stage among the temperature stages in which at least one electric drive system component is located as the temperature stage in which the electric drive system is located.

[0103] It should be noted that multiple temperature stages represent temperatures of different heats, and the heat of the conventional stage is lower than the heat of the first stage to be cooled down, the heat of the first stage to be cooled down is lower than the heat of the second stage to be cooled down, and the heat of the second cooling stage is lower than the heat of the third stage to be cooled down.

[0104] That is to say, the temperature corresponding to the normal stage is lower than the temperature corresponding to the first stage to be cooled, the temperature corresponding to the first stage to be cooled is lower than the temperature corresponding to the second stage to be cooled, and the temperature corresponding to the second cooling stage is lower than the temperature corresponding to the third stage to be cooled.

[0105] Exemplarily, if the temperature stage of the power battery is the first cooling stage, the temperature stage of the motor is the second cooling stage, and the temperature stage of the motor controller is the second cooling stage, then the highest temperature stage is the second cooling stage, and the second cooling stage is used as the temperature stage of the electric drive system.

[0106] Step S203, if the temperature stage of the electric drive system is the stage to be cooled, based on the preset mapping relationship between the stage to be cooled and the electric drive function to be restricted, the electric drive function to be restricted corresponding to the electric drive system in the stage to be cooled is determined and restricted.

[0107] Among them, different cooling stages correspond to different electric drive functions to be restricted.

[0108] Optionally, the embodiment of the present disclosure determines the electric drive function to be restricted corresponding to the cooling stage to be cooled in which the electric drive system is located based on the mapping relationship between each of a plurality of preset cooling stages and the electric drive function to be restricted.

[0109] The electric drive functions to be restricted corresponding to the electric drive system in the embodiment of the present disclosure include at least one of motor-driven power generation, pure electric starting, electric drive gear shifting and speed regulation, and motor reverse dragging of the engine.

[0110] Exemplarily, the electric drive function to be restricted corresponding to the first cooling stage is motor-driven power generation, the electric drive function to be restricted corresponding to the second cooling stage is motor-driven power generation and pure electric starting, and the electric drive function to be restricted corresponding to the third cooling stage is motor-driven power generation, pure electric starting, electric drive gear shifting and speed regulation, and motor reverse dragging of the engine.

[0111] Optionally, if the electric drive system is in the first cooling stage, the present application provides a method as follows: Figure 4 A flow chart of limiting motor drive power generation is shown, and the specific steps are as follows:

[0112] Step S401, based on the temperature of at least one reference electric drive system component and a preset mapping relationship between different temperatures of the electric drive system component and the motor torque weight, determine the motor torque weight corresponding to each of the at least one reference electric drive system components.

[0113] The reference electric drive system component is an electric drive system component in at least one electric drive system component that is in the same stage of cooling down as the electric drive system.

[0114] Exemplarily, if the temperature stage of the electric drive system is the second stage to be cooled down, then the electric drive system component in the second stage to be cooled down among the at least one electric drive system component is the reference electric drive system component.

[0115] For example, taking a motor as an example, the present disclosure provides an example of the mapping relationship between different temperatures of the motor and the motor torque weight, as shown in Table 1:

[0116]

[0117] It should be noted that X represents the current temperature of the motor.

[0118] Taking a power battery as an example, the present disclosure provides an example of the mapping relationship between different temperatures of the power battery and the motor torque weight, as shown in Table 2:

[0119]

[0120] It should be noted that Y represents the current temperature of the power battery.

[0121] Taking the motor controller as an example, the present disclosure provides an example of the mapping relationship between different temperatures of the motor controller and the motor torque weight, as shown in Table 3:

[0122]

[0123] It should be noted that Z represents the current temperature of the motor controller.

[0124] Exemplarily, the temperature stage of the electric drive system is the first stage to be cooled down, and the electric drive system components include a motor as an example. If the motor temperature is 135, the motor torque weight corresponding to the motor is determined to be 0.7.

[0125] Step S402, taking the smallest motor torque weight among the motor torque weights corresponding to at least one reference electric drive system component as the motor torque weight corresponding to the electric drive system, and adjusting the initial motor torque distribution amount based on the motor torque weight corresponding to the electric drive system to obtain a target motor torque distribution amount; the target motor torque distribution amount is less than the initial motor torque distribution amount.

[0126] If at least one reference electric drive system component is a power battery and a motor, and the motor torque weight corresponding to the power battery is 0.5, and the motor torque weight corresponding to the motor is 0.7, then 0.5 is used as the motor torque weight corresponding to the electric drive system.

[0127] In another optional implementation, the disclosed embodiment may also determine the motor torque weight corresponding to each of the at least one electric drive system components based on the temperature corresponding to each of the at least one electric drive system components and the preset mapping relationship between different temperatures of the electric drive system components and the motor torque weight. The smallest motor torque weight among the motor torque weights corresponding to each of the at least one electric drive system components is used as the motor torque weight corresponding to the electric drive system, and the initial motor torque distribution amount is adjusted based on the motor torque weight corresponding to the electric drive system to obtain a target motor torque distribution amount; the target motor torque distribution amount is less than the initial motor torque distribution amount.

[0128] It should be noted that the mapping relationship between different temperatures and motor torque weights of the preset electric drive system components can be found in Table 1, Table 2 and Table 3, which will not be repeated in this disclosure.

[0129] Optionally, the embodiment of the present disclosure determines the target motor torque distribution amount by formula 1:

[0130]

[0131] in, Indicates the motor torque weight corresponding to the electric drive system.

[0132] It should be noted that the initial motor torque distribution is the motor torque distribution that the microcontroller unit originally wants to transmit to the motor. After adjusting the initial motor torque distribution by the motor torque weight, the target motor torque distribution obtained is smaller than the initial motor torque distribution.

[0133] Step S403 , controlling the motor based on the target motor torque distribution, so that the motor drives the hybrid vehicle based on a torque less than or equal to the target motor torque distribution, or so that the motor generates electricity based on a torque less than or equal to the target motor torque distribution.

[0134] The disclosed embodiment controls the motor based on the target motor torque distribution amount so that the maximum torque range of the motor is limited. If the motor is currently in a state of driving the vehicle, the motor can be controlled based on the target motor torque distribution amount to limit the maximum amount of the motor driving the hybrid vehicle, so that the motor can only drive the hybrid vehicle based on a torque amount less than or equal to the target motor torque distribution amount, thereby reducing the heat generation of the hybrid vehicle.

[0135] If the motor is currently in a state of driving the vehicle, controlling the motor based on the target motor torque distribution can limit the maximum amount of power generated by the motor, so that the motor can only generate power based on a torque amount less than or equal to the target motor torque distribution amount, thereby reducing the heat generated by the hybrid vehicle.

[0136] Optionally, if the electric drive system is in the second cooling stage or the third cooling stage, the embodiment of the present disclosure prohibits the use of the functions to be restricted corresponding to the corresponding stage.

[0137] If the electric drive system is in the second stage of waiting for cooling, for example, the motor-driven power generation and pure electric starting need to be prohibited. If the electric drive system is in the third stage of waiting for cooling, for example, the motor-driven power generation, pure electric starting, electric drive gear shifting and speed regulation, and motor reverse engine dragging need to be prohibited.

[0138] It should be noted that the present disclosure limits different electric drive functions to be limited at different stages of cooling, so as to ensure the dynamic response performance and driving comfort of the vehicle while ensuring temperature control. Among them, by first limiting the electric drive functions that have a greater impact on the temperature and a smaller impact on the dynamic response performance and driving comfort of the vehicle, the more important core electric drive functions are retained, thereby reducing heat generation, so that the present disclosure can achieve effective control of the vehicle temperature.

[0139] Optionally, in the embodiment of the present disclosure, the target motor torque distribution amount sent by the microcontroller unit to the motor is 0, which can prohibit the hybrid vehicle from driving the motor to generate electricity.

[0140] Optionally, in the embodiment of the present disclosure, the electric drive system may be prohibited from using pure electric starting by prohibiting pure electric starting by the microcontroller unit.

[0141] Optionally, in the embodiment of the present disclosure, when gear shifting and speed regulation are required, the micro control unit controls the engine speed to achieve speed regulation through the engine, thereby prohibiting electric drive gear shifting and speed regulation in the hybrid vehicle.

[0142] Specifically, the micro control unit transmits the torque distribution amount to the engine, so that the engine runs at a corresponding speed based on the received torque distribution amount.

[0143] Optionally, when the reverse engine dragging function is needed, the embodiment of the present disclosure sends a start signal to the starter through the microcontroller unit, so that the starter can execute the reverse engine dragging function, thereby prohibiting the motor of the hybrid vehicle from reverse engine dragging.

[0144] Optionally, the hybrid electric vehicle in the embodiment of the present disclosure further includes at least one heat dissipation component. When the electric drive system is in the cooling stage, the electric drive system can also be cooled by the heat dissipation component.

[0145] like Figure 5 As shown, a flow chart of controlling a heat dissipation component according to an embodiment of the present disclosure is provided, and the specific steps are as follows:

[0146] Step S501, based on the mapping relationship between each of the preset multiple cooling stages and the cooling components, determine the target cooling component corresponding to the cooling stage of the electric drive system, the target cooling component includes at least one of a cooling fan, a cooling water pump and a compressor.

[0147] In which, at least one heat dissipation component among a heat dissipation fan, a cooling water pump and a compressor can be used in the first temperature-lowering stage, the second temperature-lowering stage and the third temperature-lowering stage.

[0148] Then the mapping relationship between each of the preset multiple cooling stages and the heat dissipation components can be: a mapping relationship between the first cooling stage and at least one heat dissipation component among the cooling fan, the cooling water pump and the compressor. A mapping relationship between the second cooling stage and at least one heat dissipation component among the cooling fan, the cooling water pump and the compressor. A mapping relationship between the third cooling stage and at least one heat dissipation component among the cooling fan, the cooling water pump and the compressor.

[0149] Exemplarily, if a mapping relationship between the first stage to be cooled and the cooling fan is pre-set, then when the current electric drive system is in the first stage to be cooled, based on the preset mapping relationship between the first stage to be cooled and the cooling fan, it is determined that the target heat dissipation component corresponding to the first stage to be cooled of the electric drive system is the cooling fan.

[0150] Step S502, for any reference electric drive system component, based on the temperature of any reference electric drive system component, the target heat dissipation component and a preset mapping relationship between the temperature of any reference electric drive system component and the rotational speed of the heat dissipation component, determine the reference rotational speed of the target heat dissipation component corresponding to any reference electric drive system component.

[0151] Among them, the reference electric drive system component is an electric drive system component in the electric drive system components that is in the same cooling stage as the electric drive system.

[0152] Exemplarily, if the reference electric drive system components are the motor and the power battery, and the target heat dissipation component is the heat dissipation fan, the reference speed of the heat dissipation fan corresponding to the motor temperature is determined based on the temperature of the motor, the heat dissipation fan, and the mapping relationship between the temperature of the motor and the heat dissipation component. In addition, the reference speed of the heat dissipation fan corresponding to the power battery temperature is determined based on the temperature of the power battery, the heat dissipation fan, and the mapping relationship between the temperature of the power battery and the heat dissipation component.

[0153] In the embodiment of the present disclosure, taking the motor as an example, the mapping relationship between the temperature of the motor and the heat dissipation component can be the mapping relationship between the temperature of the motor and the rotational speed of each heat dissipation component, for example, the mapping relationship between the temperature of the motor and the rotational speed of the cooling fan, the mapping relationship between the temperature of the motor and the rotational speed of the cooling water pump, and the mapping relationship between the temperature of the motor and the rotational speed of the compressor. The mapping relationship between other electric drive system components and heat dissipation components is similar and will not be described in detail in the present disclosure.

[0154] Based on the determined reference electric drive system component and the target heat dissipation component, it can be determined that in the mapping relationship between the reference electric drive system component and the target heat dissipation component, a reference rotational speed of the target heat dissipation component corresponding to the temperature of the reference electric drive system component needs to be determined.

[0155] Taking the cooling fan as an example, the present disclosure provides an example of the mapping relationship between the temperature of the motor and the speed of the cooling fan, as shown in Table 4:

[0156]

[0157] It should be noted that X represents the current temperature of the motor.

[0158] Taking the cooling fan as an example, the present disclosure provides an example of the mapping relationship between the temperature of the power battery and the rotation speed of the cooling fan, as shown in Table 5:

[0159]

[0160] It should be noted that Y represents the current temperature of the power battery.

[0161] Based on Table 4 and Table 5, if the reference electric drive system components are determined to be the motor and the power battery, and the target heat dissipation component is the cooling fan, the reference speed of the cooling fan corresponding to the motor temperature can be determined, and the reference speed of the cooling fan corresponding to the power battery temperature can be determined.

[0162] Exemplarily, the present disclosure takes a compressor as an example to illustrate the mapping relationship between the temperature of the power battery and the rotation speed of the compressor, as shown in Table 6:

[0163]

[0164] It should be noted that Y represents the current temperature of the power battery.

[0165] For example, if the reference electric drive system component is determined to be a power battery, and the target heat dissipation component is a heat dissipation fan and a compressor, then based on the temperature of the power battery, the heat dissipation fan, and the mapping relationship between the power battery and the heat dissipation component, the reference speed of the heat dissipation fan corresponding to the temperature of the power battery is determined. In addition, based on the temperature of the power battery, the compressor, and the mapping relationship between the power battery and the compressor, the reference speed of the compressor corresponding to the temperature of the power battery is determined.

[0166] Step S503, determining a target speed of the target heat dissipation component based on the reference speed of the target heat dissipation component corresponding to each reference electric drive system component, and controlling the target heat dissipation component based on the target speed to reduce the temperature of the electric drive system.

[0167] Among the reference rotation speeds of the target heat dissipation components corresponding to the reference electric drive system components, the maximum reference rotation speed is determined as the target rotation speed of the target heat dissipation component.

[0168] For example, taking the target heat dissipation component as a cooling fan, and the reference electric drive system components as a power battery and a motor, if the reference speed of the cooling fan corresponding to the power battery is 4200, and the reference speed of the cooling fan corresponding to the motor is 4200, 4200 is used as the target speed of the cooling fan, and the target heat dissipation component is controlled based on the target speed.

[0169] Among them, if the target heat dissipation component includes multiple cooling fans, cooling water pumps and compressors, then for any target heat dissipation component, the maximum reference speed among the reference speeds of any target heat dissipation component corresponding to each reference electric drive system component is used as the target speed of the target heat dissipation component.

[0170] For example, if the target heat dissipation components are the cooling fan and the compressor, and the reference electric drive system components are the motor and the power battery, then for the cooling fan, the reference speed of the cooling fan determined based on the motor temperature and the reference speed of the cooling fan determined based on the power battery temperature, the maximum reference speed is used as the target speed of the cooling fan. For the compressor, the reference speed of the compressor determined based on the motor temperature and the reference speed of the compressor determined based on the power battery temperature, the maximum reference speed is used as the target speed of the compressor.

[0171] In another optional implementation, the embodiment of the present application can determine the reference speed of the target heat dissipation component corresponding to each electric drive system component based on the temperature of each electric drive system component, the target heat dissipation component, and the mapping relationship between the temperature of the preset electric drive system component and the speed of the heat dissipation component. For each target heat dissipation component, the maximum reference speed among the reference speeds corresponding to each electric drive system component is used as the target speed of the target heat dissipation component.

[0172] Based on the above process, when the electric drive system is in the cooling stage, the temperature can be controlled to decrease.

[0173] It should be noted that when the electric drive system is in the normal stage, the electric drive system can also be cooled by the heat dissipation component. The principle of the method is the same as the principle of controlling the heat dissipation component when the electric drive system is in the cooling stage, and the present disclosure will not repeat it here.

[0174] Optionally, after obtaining the temperature of the power battery in step S201, the microcontroller unit may perform step S202 after determining that the temperature of the power battery is greater than a preset temperature T0. If the temperature of the power battery is not greater than the preset temperature T0, it is determined that the power battery is in the stage of waiting for temperature rise.

[0175] It should be noted that the preset temperature T0 is obtained based on test data. For example, the preset temperature T0 may be 10°C.

[0176] Optionally, when the battery is in the stage of waiting to be heated up, the embodiment of the present disclosure determines whether the engine is in a running state, and if so, the engine continues to run; if not, the engine is started.

[0177] The embodiment of the present disclosure heats up the power battery through steps A1 and A2:

[0178] Step A1, obtaining the temperature of the engine coolant when the engine of the hybrid vehicle is in a running state.

[0179] Step A2, when it is determined that the temperature of the engine coolant meets the safe heating conditions, the battery warming valve is opened to increase the battery temperature in the hybrid vehicle.

[0180] If the engine coolant temperature is greater than the heating threshold, it is determined that the engine coolant temperature meets the safety heating condition.

[0181] Exemplarily, the heating threshold value may be set to T4. The heating threshold value T4 is obtained based on test data. For example, T4 may be 8°C.

[0182] Optionally, after the battery warm water valve is opened, the embodiment of the present disclosure determines the temperature of the battery water outlet, and when it is determined that the battery temperature is greater than the heating stop threshold, the battery warm water valve is closed.

[0183] Exemplarily, the heating stop threshold may be set to T5. The heating stop threshold T5 is obtained based on test data. For example, T5 may be 35°C.

[0184] like Figure 6FIG. 1 is a schematic diagram of a thermal management structure of a hybrid vehicle according to an embodiment of the present disclosure. K1 is a cab shut-off valve, K2 is a cab warm water valve, K3 is a battery warm water valve, K5 is a normally closed two-position single-way valve, K6 is a battery shut-off valve, and K7 is an engine thermostat (cooling water circuit switch).

[0185] The heat dissipation fan in the present disclosure can be Figure 6 At least one of the fan group 1 and the fan group 2 in the cooling water pump can be Figure 6 The motor water pump in.

[0186] Among them, the embodiment of the present disclosure briefly describes Figure 6 The control principle is introduced in:

[0187] 1. Refrigeration circuit: condenser - through stop valve K1 or K6 - cool the cab and battery respectively - merge and then pass through the normally closed solenoid valve K5 (if engine cooling is required, open the solenoid valve K5) - compressor - condensation to form a refrigeration circuit; when the cab has a cooling demand, the refrigeration circuit passes through the cab first.

[0188] 2. Circulating water heating circuit: engine circulating water tank (k7 is the engine size circulating water circuit switch) - heating the cab or battery through the warm water valves K2 and K3 respectively - engine circulating water tank.

[0189] 3. The engine, motor and battery radiator share a cooling fan group. Depending on the vehicle's cooling needs, fan group 1 or 2 groups can work simultaneously. The fan can be driven by the engine or the electric motor. It can realize the operation of the thermal management system in pure electric mode, and can also improve the system efficiency with the help of engine power after the engine is started.

[0190] 4. The engine is the only heat source of the circulating water system. The circulating water can be heated by the engine without the need for a separate high-voltage thermal resistor PTC component, thus reducing system costs.

[0191] like Figure 7 As shown, an overall flow chart of controlling the temperature of a hybrid vehicle according to an embodiment of the present disclosure is applied to a micro control unit, and the specific steps are as follows:

[0192] Step S701, determining whether the power battery temperature is greater than a preset temperature T0; if so, executing step S702; if not, executing step S7013.

[0193] Step S702, determine whether the power battery, the motor and the motor controller are less than their respective corresponding temperature thresholds T1; if so, execute step S703; if not, execute step S705.

[0194] Step S703: controlling at least one target heat dissipation component based on the target rotation speed.

[0195] The disclosed embodiment determines the reference rotation speed of the target heat dissipation component based on the respective temperatures of the battery, the motor and the motor controller, and the mapping relationship between the temperatures and the heat dissipation component; and determines the target rotation speed of the target heat dissipation component based on the reference rotation speed of the target heat dissipation component.

[0196] It should be noted that when the judgment condition of step S702 is met, it is determined that the temperature stage of the current electric drive system is a normal stage, and in this temperature stage, the present disclosure does not limit the electric drive function in the electric drive system. In other words, the present disclosure can use electric drive functions such as motor-driven power generation, pure electric starting, electric drive shifting and speed regulation, and motor reverse engine.

[0197] Step S704, determine whether the vehicle is powered off; if so, end; if not, execute step S702.

[0198] Step S705, determining whether the power battery, the motor and the motor controller are less than their respective corresponding temperature thresholds T2; if so, executing step S706; if not, executing step S708.

[0199] Step S706, limiting the motor driving power generation.

[0200] By limiting the motor drive power generation, the power of the electric drive system is reduced and the system heat is reduced.

[0201] At this time, the vehicle's related dynamic functions are still released, and functions such as gear shifting, reverse engine starting, and pure electric starting are not affected. Driving comfort is not affected, only the vehicle's economy is affected.

[0202] It should be noted that the dynamic performance mentioned in this disclosure mainly refers to the motor dragging the engine in reverse, gear shifting and speed regulation, pure electric starting, as well as driving assistance and power generation status (i.e. motor driven power generation).

[0203] Step S707: controlling at least one target heat dissipation component based on the target rotation speed.

[0204] Step S708, determine whether the power battery, the motor and the motor controller are less than their respective corresponding temperature thresholds T3; if so, execute step S709; if not, execute step S7011.

[0205] Step S709, prohibiting the motor from driving the power generation and pure electric starting.

[0206] At this time, some of the vehicle's dynamic functions are released, gear shifting and reverse engine are not affected, but driving comfort is affected to a certain extent.

[0207] Step S7010: controlling at least one target heat dissipation component based on the target rotation speed.

[0208] Step S7011, prohibiting motor-driven power generation, pure electric starting, electric drive gear shifting and speed regulation, and motor reverse dragging of the engine.

[0209] At this time, the vehicle's electric drive system is prohibited from working, and the vehicle relies on the engine to drive. The corresponding thermal management system components are accelerated to ensure that the electric drive system cools down quickly and returns to normal as soon as possible.

[0210] Step S7012: controlling at least one target heat dissipation component based on the target rotation speed.

[0211] Step S7013, determine whether the engine is started; if so, execute step S7015; if not, execute step S7014.

[0212] Step S7014, start the engine.

[0213] Step S7015, determine whether the engine coolant temperature is greater than T4; if so, execute step S7016; if not, execute step S7015.

[0214] Step S7016, open the battery warm water valve.

[0215] Step S7017, determine whether the battery water outlet temperature is greater than T5; if so, execute step S7018; if not, execute step S7016.

[0216] Step S7018, close the battery warm water valve.

[0217] Currently, hybrid vehicles generally trigger the power limit state after the thermal management system fails. At this time, since the power output of the electric drive system has been limited, it will affect the vehicle's dynamic performance and driving comfort. The present disclosure takes the thermal management state into consideration to control the electric drive system of the hybrid vehicle, mainly by sensing the status of the thermal management motor and controller, battery and other components in advance. Before the power limit state is triggered, by limiting the state of some electric drive functions, the heat generation power of the components is reduced, and at the same time, the heat dissipation of the vehicle is increased to ensure the dynamic response performance of the vehicle and improve the driving comfort of the vehicle. The present disclosure mentions that the dynamic performance is mainly the motor dragging the engine, shifting and speed regulation, pure electric starting and driving assistance and power generation. By limiting the electric drive system function, reducing the state of the front drive system, and cooling or heating in advance, it is ensured that the components work in an appropriate range, thereby ensuring the responsiveness of the hybrid system during dynamic switching.

[0218] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0219] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0220] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0221] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0222] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A hybrid vehicle control method, characterized in that: The method comprises: Acquiring a temperature of at least one electric drive system component in a hybrid electric vehicle, wherein the electric drive system component includes a power battery, a motor, and a motor controller in the electric drive system; Based on the temperature of the at least one electric drive system component, determining the temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages, wherein the plurality of temperature stages include a plurality of temperature reduction stages, and different temperature reduction stages correspond to different electric drive functions to be restricted; If the temperature stage of the electric drive system is a cooling stage, based on the preset mapping relationship between each of the multiple cooling stages and the electric drive functions to be restricted, the electric drive functions to be restricted corresponding to the cooling stage of the electric drive system are determined and restricted; the electric drive functions to be restricted corresponding to the electric drive system include at least one of motor-driven power generation, pure electric starting, electric-driven gear shifting and speed regulation, and motor reverse dragging of the engine.

2. The method according to claim 1, characterized in that The determining, based on the temperature of the at least one electric drive system component, the temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages comprises: For any electric drive system component, determining the temperature stage of the any electric drive system component by comparing the temperature of the any electric drive system component with a plurality of temperature thresholds corresponding to the any electric drive system component, wherein the plurality of temperature thresholds are used to divide the plurality of temperature stages; The highest temperature stage among the temperature stages in which the at least one electric drive system component is located is taken as the temperature stage in which the electric drive system is located.

3. The method according to claim 1, characterized in that The multiple cooling stages include a first cooling stage, a second cooling stage and a third cooling stage, the temperature corresponding to the first cooling stage is lower than the temperature corresponding to the second cooling stage, and the temperature corresponding to the second cooling stage is lower than the temperature corresponding to the third cooling stage; The electric drive function to be restricted corresponding to the first cooling stage is motor-driven power generation, the electric drive function to be restricted corresponding to the second cooling stage is motor-driven power generation and pure electric starting, and the electric drive function to be restricted corresponding to the third cooling stage is motor-driven power generation, pure electric starting, electric-driven gear shifting and speed regulation, and motor reverse dragging of the engine.

4. The method according to claim 3, characterized in that If the electric drive system is in the first cooling stage, the motor drive power generation is limited in the following manner: Based on the temperature of at least one reference electric drive system component and a preset mapping relationship between different temperatures of the electric drive system component and the motor torque weight, determine the motor torque weight corresponding to each of the at least one reference electric drive system components; The reference electric drive system component is an electric drive system component in the at least one electric drive system component that is in the same stage of cooling as the electric drive system; The minimum motor torque weight among the motor torque weights corresponding to the at least one reference electric drive system component is used as the motor torque weight corresponding to the electric drive system, and the initial motor torque distribution amount is adjusted based on the motor torque weight corresponding to the electric drive system to obtain a target motor torque distribution amount; The target motor torque distribution amount is smaller than the initial motor torque distribution amount; The motor is controlled based on the target motor torque distribution amount so that the motor drives the hybrid vehicle based on a torque amount less than or equal to the target motor torque distribution amount, or so that the motor generates electricity based on a torque amount less than or equal to the target motor torque distribution amount.

5. The method according to any one of claims 1 to 4, characterized in that: The hybrid electric vehicle further includes at least one heat dissipation component, the multiple temperature stages include multiple stages to be cooled; when the electric drive system is in the stage to be cooled, the method further includes: Based on the preset mapping relationship between each of the plurality of cooling stages and the cooling components, determining a target cooling component corresponding to the cooling stage of the electric drive system, wherein the target cooling component includes at least one of a cooling fan, a cooling water pump and a compressor; For any reference electric drive system component, based on the temperature of the any reference electric drive system component, the target heat dissipation component and a preset mapping relationship between the temperature of the any reference electric drive system component and the rotation speed of the heat dissipation component, determine the reference rotation speed of the target heat dissipation component corresponding to the any reference electric drive system component; the reference electric drive system component is an electric drive system component in the electric drive system components that is in the same stage of cooling down as the electric drive system; Based on the reference rotational speed of the target heat dissipation component corresponding to each of the reference electric drive system components, a target rotational speed of the target heat dissipation component is determined, and the target heat dissipation component is controlled based on the target rotational speed to reduce the temperature of the electric drive system.

6. The method according to claim 5, characterized in that If the target heat dissipation component includes multiple ones of a heat dissipation fan, a cooling water pump, and a compressor, determining the target speed of the target heat dissipation component based on the reference speed of the target heat dissipation component corresponding to each of the reference electric drive system components includes: For any target heat dissipation component, the maximum reference rotational speed among the reference rotational speeds of any target heat dissipation component corresponding to each of the reference electric drive system components is used as the target rotational speed of the target heat dissipation component.

7. A hybrid vehicle control device, characterized in that: include: An acquisition module, used to acquire the temperature of at least one electric drive system component in the hybrid electric vehicle, wherein the electric drive system component includes a power battery, a motor and a motor controller in the electric drive system; a determination module, configured to determine the temperature stage of the electric drive system of the hybrid vehicle in a plurality of preset temperature stages based on the temperature of the at least one electric drive system component, wherein the plurality of temperature stages include a plurality of stages to be cooled, and different stages to be cooled correspond to different electric drive functions to be restricted; A restriction module is used to determine the electric drive function to be restricted corresponding to the temperature stage to be cooled down in which the electric drive system is located, and to restrict it based on the preset mapping relationship between each of the multiple temperature-cooling stages and the electric drive functions to be restricted, if the temperature stage in which the electric drive system is located is the temperature-cooling stage, and to restrict it; the electric drive function to be restricted corresponding to the electric drive system includes at least one of motor-driven power generation, pure electric starting, electric-driven gear shifting and speed regulation, and motor reverse dragging of the engine.

8. A hybrid vehicle control device, characterized in that: include: processor; A memory for storing processor-executable instructions; wherein the processor implements the steps of the method according to any one of claims 1 to 6 by running the executable instructions.

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

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