Engine starting method and system of hybrid vehicle, medium and hybrid vehicle

Abstract

The invention discloses an engine starting method and system of a hybrid vehicle, a medium and the hybrid vehicle, and the method comprises the following steps: determining the first residual power of a power battery according to the current discharge power of the power battery and the current working power of a direct current-direct current converter; the current working power is the sum of the working power of all domain controllers in the hybrid vehicle; if the first residual power is lower than the power required for starting the engine, determining second residual power of the power battery according to the current discharge power and the minimum working power; if the second residual power is higher than the power required for starting the engine, target limiting power is determined according to the current working power and the minimum working power; limiting the execution power of a first type of function executor under the domain controller according to the target limiting power, and starting the engine; wherein the first type of function executors are used for providing other functions except basic functions required by driving.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an engine starting method, system, medium and hybrid vehicle of a hybrid vehicle. Background Art

[0002] In hybrid vehicles, the engine, generator and power battery are closely coordinated. The engine is the traditional power source, which can directly drive the vehicle forward. The generator is usually connected to the engine to convert the engine's mechanical energy into electrical energy. The power battery is used to store electrical energy from the generator or external charging equipment. When the power battery is not enough to support the vehicle's driving, the engine will be started.

[0003] The engine is usually not equipped with a separate starter when starting, but is triggered by a generator. When extreme operating conditions such as low temperature and low battery power cause the discharge power of the power battery to be too low, the power battery cannot provide enough power for the generator to start the engine to generate electricity, causing the vehicle to be unable to drive normally even if there is oil. For example, if the generator needs 5kw of power to start the engine, and the power battery has a remaining power of less than 5kw, it is not enough to support the generator to start the engine, causing the vehicle to break down.

[0004] Therefore, the problem with the prior art is that when the power reserve of the power battery is too low to support starting the engine, the vehicle can only lie still and wait for rescue. Summary of the invention

[0005] In order to solve or partially solve the technical problem that when the power reserve of the power battery is too low to support starting the engine, the vehicle can only break down and wait for rescue, the present invention provides an engine starting method, system, medium and hybrid vehicle for a hybrid vehicle. When the remaining power of the power battery cannot meet the engine starting demand, by limiting the execution power of the first type of functional actuator under the domain controller, the power battery can support starting the engine to take over driving the vehicle, thereby reducing the probability of the vehicle breaking down.

[0006] In order to solve the above technical problems, the first aspect of the present invention discloses a method for starting an engine of a hybrid vehicle, the method comprising:

[0007] determining a first residual power of the power battery according to a current discharge power of the power battery and a current operating power of the DC-DC converter; the current operating power being the sum of the operating powers of all domain controllers in the hybrid vehicle;

[0008] If the first remaining power is lower than the power required for starting the engine, determining the second remaining power of the power battery according to the current discharge power and the minimum operating power;

[0009] If the second remaining power is above the power required for starting the engine, determining a target limit power according to the current working power and the minimum working power;

[0010] The execution power of the first type of function actuator under the domain controller is limited according to the target limit power, and the engine is started; wherein the first type of function actuator is used to provide other functions in addition to the basic functions required for driving.

[0011] Optionally, limiting the execution power of the first type of function executor under the domain controller according to the target power limit specifically includes:

[0012] According to the target power limit, determining a target power limit level from a power limit level set;

[0013] Counting the device types of a plurality of first-category function executors under the domain controller;

[0014] Determining the power limit percentages of the first-category function actuators under the domain controller according to the target power limit level and the device type;

[0015] The execution power of the corresponding first-category function actuator is limited according to the power limit percentage.

[0016] Optionally, there is a mapping relationship between the power limit level set and the power limit; and determining the target power limit level from the power limit level set according to the target power limit specifically includes:

[0017] According to the target power limit, the target power limit level is determined from a mapping relationship between a power limit level set and the power limit.

[0018] Optionally, limiting the execution power of the corresponding first-category function actuator according to the power limit percentage specifically includes:

[0019] According to the power limit percentage, the execution power of the corresponding first-category functional actuator is reduced to obtain an individual power limit;

[0020] generating a power supply limit command according to the individual power limit;

[0021] The power supply limitation command is sent to the corresponding domain controller to control the corresponding first function executor to operate according to the individual power limitation.

[0022] Optionally, after limiting the execution power of the first type of function executor under the domain controller according to the target power limit, the method further includes:

[0023] It is prohibited to limit the execution power of the second type of function executor under the domain controller; wherein, the second type of function executor is used to provide basic functions required for driving.

[0024] Optionally, starting the engine specifically includes:

[0025] Real-time monitoring of the actual operating power of the DC-DC converter;

[0026] If the difference between the current discharge power and the actual working power is above the power required for starting the engine, an engine start command is generated;

[0027] The engine start command is sent to the domain controller where the generator is located to control the generator to start the engine.

[0028] Optionally, after starting the engine, the method further includes:

[0029] The restriction on the execution power of the first-category function executor under the domain controller is removed.

[0030] A second aspect of the present invention discloses an engine starting system for a hybrid vehicle, comprising:

[0031] A first determination module, configured to determine a first residual power of the power battery according to a current discharge power of the power battery and a current operating power of the DC-DC converter; the current operating power being the sum of the operating powers of all domain controllers in the hybrid vehicle;

[0032] a second determining module, configured to determine a second remaining power of the power battery according to the current discharge power and the minimum operating power if the first remaining power is lower than the power required for starting the engine;

[0033] a third determining module, configured to determine a target limit power according to the current working power and the minimum working power if the second remaining power is above the power required for starting the engine;

[0034] A limiting module is used to limit the execution power of the first type of function actuator under the domain controller according to the target limiting power, and start the engine; wherein the first type of function actuator is used to provide other functions in addition to the basic functions required for driving.

[0035] Optionally, the restriction module specifically includes:

[0036] a fourth determining module, configured to determine a target power limit level from a power limit level set according to the target power limit;

[0037] A statistics module, used for counting device types of a plurality of first-category function executors under the domain controller;

[0038] a fifth determining module, configured to determine the power limit percentage of each of the plurality of first-category function actuators under the domain controller according to the target power limit level and the device type;

[0039] The limiting submodule is used to limit the execution power of the corresponding first-category functional actuator according to the power limiting percentage.

[0040] Optionally, there is a mapping relationship between the power limit level set and the limited power; the fourth determination module is specifically used to determine the target power limit level from the mapping relationship between the power limit level set and the limited power according to the target limited power.

[0041] Optionally, the restriction submodule is specifically used to:

[0042] According to the power limit percentage, the execution power of the corresponding first-category functional actuator is reduced to obtain an individual power limit;

[0043] generating a power supply limit command according to the individual power limit;

[0044] The power supply limitation command is sent to the corresponding domain controller to control the corresponding first function executor to operate according to the individual power limitation.

[0045] Optionally, the system further includes:

[0046] The prohibition module is used to prohibit and limit the execution power of the second type of function executor under the domain controller; wherein the second type of function executor is used to provide basic functions required for driving.

[0047] Optionally, the restriction module is further used to:

[0048] Real-time monitoring of the actual operating power of the DC-DC converter;

[0049] If the difference between the current discharge power and the actual working power is above the power required for starting the engine, an engine start command is generated;

[0050] The engine start command is sent to the domain controller where the generator is located to control the generator to start the engine.

[0051] Optionally, the system further includes:

[0052] The cancellation module is used to cancel the restriction on the execution power of the first type of function executor under the domain controller.

[0053] According to a third aspect of the present invention, a computer-readable storage medium is disclosed, on which a computer program is stored, and when the program is executed by a processor, the steps of the above method are implemented.

[0054] According to a fourth aspect of the present invention, a hybrid vehicle is disclosed, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.

[0055] Through one or more technical solutions of the present invention, the present invention has the following beneficial effects or advantages:

[0056] The present invention provides an engine starting method, system, medium and hybrid vehicle for a hybrid vehicle, wherein the first residual power of the power battery is determined according to the current discharge power of the power battery and the current working power of the DC-DC converter. If the first residual power is lower than the power required for engine starting, it means that the power battery is temporarily unable to provide the power required for engine starting, and the second residual power of the power battery is determined according to the current discharge power and the minimum working power. If the second residual power is higher than the power required for engine starting, it means that the power battery can provide the power required for engine starting after power limiting, and the target limit power is determined according to the current working power and the minimum working power, and the execution power of the first type of functional actuator under the domain controller is limited according to the target limit power, so as to reduce the power consumption of the first type of functional actuator, so that the power battery can meet the power required for engine starting, thereby successfully starting the engine, and allowing the engine to take over driving the vehicle, thereby reducing the probability of vehicle breakdown and improving the safety of vehicle use.

[0057] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0059] Figure 1 A flow chart showing an engine starting method for a hybrid vehicle according to an embodiment of the present invention is shown;

[0060] Figure 2 A schematic diagram of a central integrated architecture of a hybrid vehicle according to an embodiment of the present invention is shown;

[0061] Figure 3 A schematic diagram of an engine starting system for a hybrid vehicle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0062] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0063] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0064] First, as Figure 1 As shown, the engine starting method of a hybrid vehicle provided by an embodiment of the present invention comprises at least the following steps:

[0065] S101 : determining a first remaining power of the power battery according to a current discharge power of the power battery and a current operating power of a DC-DC converter.

[0066] For details, see Figure 2 , hybrid vehicles are managed according to the central integrated architecture. In the central integrated architecture, it includes: central processor and distributed domain controllers: power domain controller, VIU-F (vehicle front domain controller), VIU-MF (vehicle middle left domain controller), VIU-MR (vehicle middle right domain controller), VIU-R (vehicle rear domain controller). The low-voltage power supply of each domain controller is introduced from the battery to the distribution box, and the power supply is controlled by KL30 or KL15.

[0067] Each domain controller VIU has different actuators hanging under it, such as the engine, battery management system, generator, DC-DC converter, seat massage module WSM, etc. The functions provided include signal routing, power supply, accessory drive, sensor signal acquisition, etc.

[0068] In this embodiment, the actuators under each domain controller VIU are divided into first-class functional actuators and second-class functional actuators according to their functions. The first-class functional actuators are used to provide other functions besides the basic functions required for driving. The second-class functional actuators are used to provide the basic functions required for driving.

[0069] The central processing unit controls the power supply of each actuator through the domain controller. For example, when the central processing unit sends a Devcive3-3 power supply command to VIU-MR, the Device3-3 of VIU will output voltage to supply power to the actuator corresponding to the seat massage module WSM. Similarly, the central processing unit can also send a power off command to stop supplying power to the actuator corresponding to the seat massage module WSM.

[0070] Before determining the first remaining power of the power battery, the current state of the engine is detected. If the current state of the engine is not running, the current discharge power of the power battery and the current working power of the DC-DC converter are collected in real time.

[0071] The current discharge power of the power battery refers to the rate at which the power battery releases electrical energy to the external load at the current moment, in kw. The current operating power of the DC-DC converter is the sum of the operating powers of all domain controllers in the hybrid vehicle. The first residual power of the power battery is obtained by subtracting the current discharge power of the power battery from the current operating power of the DC-DC converter.

[0072] S102: If the first remaining power is lower than the power required for starting the engine, determining the second remaining power of the power battery according to the current discharge power and the minimum operating power.

[0073] Specifically, the magnitude of the first remaining power of the power battery and the power required by the engine is determined.

[0074] If the first residual power of the power battery is above the power required by the engine, it means that the residual power of the power battery is sufficient to support the hybrid vehicle to travel in pure electric mode. At this time, the engine is not started and remains in a non-running state.

[0075] If the first remaining power is lower than the power required for starting the engine, it means that the power battery cannot meet the power required for starting the engine, and the current available power of the power battery is insufficient to start the engine.

[0076] For example, the power required for engine start P-start = 5kw. The first remaining power P1 = 6kw-4kw = 2kw < 5kw, which means that the current available power of the power battery is insufficient to support the engine start. Therefore, the minimum operating power of the DC-DC converter is triggered. The minimum operating power of the DC-DC converter refers to the minimum power limit at which the DC-DC converter can work normally and provide the basic driving function of the hybrid vehicle.

[0077] Furthermore, the current discharge power is subtracted from the minimum operating power to obtain a second residual power of the power battery.

[0078] S103: If the second remaining power is greater than the power required for starting the engine, determine a target limit power according to the current working power and the minimum working power.

[0079] Specifically, the second remaining power of the power battery and the power required for starting the engine are determined. If the second remaining power is less than the power required for starting the engine, it means that even if the power of each domain controller is limited, the engine cannot be started.

[0080] If the second residual power is above the power required for the engine to start, it means that after the power is limited, the power battery can support the engine to start. Therefore, the target power limit is determined based on the current working power and the minimum working power. Among them, the target power limit is used as a reference standard for limiting the execution power of the first type of functional actuator. For example, the power required for the engine to start P-start = 5kw. The second residual power P2 = 6kw-0.5kw = 5.5kw is greater than 5kw, which means that the power battery can support the power required for the engine to start. Therefore, the target power limit P is calculated. 目 : 4kw-0.5kw=3.5kw, indicating that the execution power of the first type of functional actuator needs to be limited to 3.5kw so that the power battery can meet the minimum requirement for starting the engine.

[0081] S104: Limit the execution power of the first type of function executor under the domain controller according to the target limit power, and start the engine.

[0082] In the process of limiting the execution power of the first type of function actuator, the power of the first type of function actuator is mainly limited. The first type of function actuator is used to provide other functions besides the basic functions required for driving, so limiting the power of the first type of function actuator will not affect driving safety.

[0083] Specifically, according to the target power limit, the target power limit level is determined from the power limit level set. There is a mapping relationship between the power limit level set and the power limit. During execution, according to the target power limit, the target power limit level is determined from the mapping relationship between the power limit level set and the power limit.

[0084] For example, the power limit level set specifically includes three levels: Level 1 to Level 3, and the power limit ranges of the three levels increase in sequence. Level 1 has the smallest power limit range, and Level 3 has the largest power limit range. The power limit corresponding to Level 1 is 0 to 1 kW, the power limit corresponding to Level 2 is 1 to 2 kW, and the power limit corresponding to Level 3 is 2 to 4 kW. If the target power limit P 目 =3.5kw, then the target power limit level is determined to be Level3.

[0085] Since each domain controller contains first-class function executors and / or second-class function executors. Each function executor has a different device type, each function executor has its own execution power, and each function executor has a different power limit percentage in different power limit levels. Therefore, the device types of several first-class function executors under the domain controller are counted. According to the target power limit level and device type, the power limit percentage of each of several first-class function executors under the domain controller can be determined. The execution power of the corresponding first-class function executor is limited according to the power limit percentage.

[0086] See Table 1, which shows the power limit percentages of several first-category functional actuators at different power limit levels.

[0087] Table 1

[0088]

[0089]

[0090] In Table 1, there is no restriction on use at Level 0, and the power restrictions at Levels 1 to 3 are getting stronger and stronger. At Level 3, only the blower is limited to 75% and can work at 25% of the maximum power. Other devices are limited to 100% and cannot work. The low-voltage power of this part is as low as 0.15kw.

[0091] In the specific process of power limiting, the execution power of the corresponding first-category functional executor is reduced according to the power limiting percentage to obtain an individual power limit; a power supply limitation command is generated according to the individual power limit; and the power supply limitation command is sent to the corresponding domain controller to control the corresponding first-category functional executor to work according to the individual power limit.

[0092] Taking the functional actuator of the seat massage function as an example, when the target power limit level is judged to be level 3, the seat massage function needs to be turned off (the individual power limit is 100%). The central controller sends the Devcive3-3 power-off command to the domain controller corresponding to the functional actuator of the seat massage function. The domain controller controls the Devcive3-3 port to power off, and the seat massage is powered off and does not work, and the power consumption of the seat massage is reduced to 0.

[0093] In an optional implementation, after limiting the execution power of the first type of function executors under the domain controller according to the target power limit, in order to ensure basic driving needs, it is prohibited to limit the execution power of the second type of function executors under the domain controller so that the second type of function executors can maintain normal operation.

[0094] In an optional embodiment, during the implementation process of starting the engine, the actual working power of the DC-DC converter is monitored in real time; if the difference between the current discharge power and the actual working power is above the power required to start the engine, it means that the power battery can support starting the engine, and the generator has sufficient power to start the engine, then an engine start command is generated; the engine start command is sent to the domain controller where the generator is located to control the generator to start the engine.

[0095] In an optional implementation, after starting the engine, the execution power of the first type of functional actuator under the domain controller is restricted. Specifically, after the engine is successfully started, the central processor restores the power supply request of each domain controller, and each actuator resumes power supply. The central processor resends the working status command after the power supply of the actuator under each domain controller is restored according to the working status of each domain controller, instructing the actuator under each domain controller to resume work.

[0096] In the prior art, when the power reserve of the power battery is too low to start the engine, the vehicle breaks down and can only wait for rescue. However, this technical solution temporarily reduces the working power of the first-class functional actuators under each domain controller, so that more power is available to start the engine. After the engine starts successfully, it takes over to drive the vehicle and charge the power battery, reducing the probability of the vehicle breaking down. In addition, the time for shutting down the first-class functional actuators under each domain controller is extremely short, which has little impact on users and can reduce the probability of vehicle breaking down with minimal impact on the user experience.

[0097] In a second aspect, based on the same inventive concept as the engine starting method of a hybrid vehicle provided in the first aspect embodiment, the present invention also provides an engine starting system for a hybrid vehicle, see Figure 3 ,include:

[0098] A first determination module 301 is used to determine a first residual power of the power battery according to a current discharge power of the power battery and a current working power of the DC-DC converter; the current working power is the sum of working powers of all domain controllers in the hybrid vehicle;

[0099] A second determining module 302 is configured to determine a second remaining power of the power battery according to the current discharge power and the minimum operating power if the first remaining power is lower than the power required for starting the engine;

[0100] A third determining module 303 is configured to determine a target limit power according to the current working power and the minimum working power if the second remaining power is above the power required for starting the engine;

[0101] The limiting module 304 is used to limit the execution power of the first type of function actuator under the domain controller according to the target limit power and start the engine; wherein the first type of function actuator is used to provide other functions in addition to the basic functions required for driving.

[0102] It should be noted that the engine starting system for a hybrid vehicle provided in an embodiment of the present invention, wherein the specific manner in which each module performs operations has been described in detail in the method embodiment provided in the first aspect above, and the specific implementation process can refer to the method embodiment provided in the first aspect above, and will not be elaborated on here.

[0103] In a third aspect, based on the same inventive concept as the engine starting method for a hybrid vehicle provided in the embodiment of the first aspect, an embodiment of the present invention further discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0104] In the fourth aspect, based on the same inventive concept as the engine starting method for a hybrid vehicle provided in the embodiment of the first aspect mentioned above, an embodiment of the present invention further discloses a hybrid vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the methods described above when executing the program.

[0105] Through one or more embodiments of the present invention, the present invention has the following beneficial effects or advantages:

[0106] The present invention provides an engine starting method, system, medium and hybrid vehicle for a hybrid vehicle, wherein the first residual power of the power battery is determined according to the current discharge power of the power battery and the current working power of the DC-DC converter. If the first residual power is lower than the power required for engine starting, it means that the power battery is temporarily unable to provide the power required for engine starting, and the second residual power of the power battery is determined according to the current discharge power and the minimum working power. If the second residual power is higher than the power required for engine starting, it means that the power battery can provide the power required for engine starting after power limiting, and the target limit power is determined according to the current working power and the minimum working power, and the execution power of the first type of functional actuator under the domain controller is limited according to the target limit power, so as to reduce the power consumption of the first type of functional actuator, so that the power battery can meet the power required for engine starting, thereby successfully starting the engine, and allowing the engine to take over driving the vehicle, thereby reducing the probability of vehicle breakdown and improving the safety of vehicle use.

[0107] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0108] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for starting an engine of a hybrid vehicle, characterized in that: The method comprises: determining a first residual power of the power battery according to a current discharge power of the power battery and a current operating power of the DC-DC converter; the current operating power being the sum of the operating powers of all domain controllers in the hybrid vehicle; If the first remaining power is lower than the power required for starting the engine, determining the second remaining power of the power battery according to the current discharge power and the minimum operating power; If the second remaining power is above the power required for starting the engine, determining a target limit power according to the current working power and the minimum working power; The execution power of the first type of function actuator under the domain controller is limited according to the target limit power, and the engine is started; wherein the first type of function actuator is used to provide other functions in addition to the basic functions required for driving.

2. The method according to claim 1, characterized in that The step of limiting the execution power of the first type of function executor under the domain controller according to the target power limit specifically includes: According to the target power limit, determining a target power limit level from a preset power limit level set; Counting the device types of a plurality of first-category function executors under the domain controller; Determining the power limit percentages of the first-category function actuators under the domain controller according to the target power limit level and the device type; The execution power of the corresponding first-category function actuator is limited according to the power limit percentage.

3. The method according to claim 2, characterized in that There is a mapping relationship between the power limit level set and the power limit; and determining the target power limit level from the power limit level set according to the target power limit, specifically includes: According to the target power limit, the target power limit level is determined from a mapping relationship between a power limit level set and the power limit.

4. The method according to claim 2, characterized in that The limiting the execution power of the corresponding first-category function actuator according to the power limit percentage specifically includes: Reducing the execution power of the corresponding first-category functional actuator according to the power limit percentage to obtain the corresponding individual power limit of the first-category functional actuator; generating a power supply limit command according to the individual power limit; The power supply limitation command is sent to the corresponding domain controller to control the corresponding first function executor to operate according to the individual power limitation.

5. The method according to claim 1, characterized in that After limiting the execution power of the first type of function executor under the domain controller according to the target power limit, the method further includes: It is prohibited to limit the execution power of the second type of function executor under the domain controller; wherein, the second type of function executor is used to provide basic functions required for driving.

6. The method according to claim 1, characterized in that The starting of the engine specifically includes: Real-time monitoring of the actual operating power of the DC-DC converter; If the difference between the current discharge power and the actual working power is above the power required for starting the engine, an engine start command is generated; The engine start command is sent to the domain controller where the generator is located to control the generator to start the engine.

7. The method according to claim 1, characterized in that After starting the engine, the method further includes: The restriction on the execution power of the first-category function executor under the domain controller is removed.

8. An engine starting system for a hybrid vehicle, characterized in that: include: A first determination module, configured to determine a first residual power of the power battery according to a current discharge power of the power battery and a current operating power of the DC-DC converter; the current operating power being the sum of the operating powers of all domain controllers in the hybrid vehicle; a second determining module, configured to determine a second remaining power of the power battery according to the current discharge power and the minimum operating power if the first remaining power is lower than the power required for starting the engine; a third determining module, configured to determine a target limit power according to the current working power and the minimum working power if the second remaining power is above the power required for starting the engine; A limiting module is used to limit the execution power of the first type of function actuator under the domain controller according to the target limiting power, and start the engine; wherein the first type of function actuator is used to provide other functions in addition to the basic functions required for driving.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A hybrid vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method according to any one of claims 1 to 7 are implemented.

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