Warm air control method, storage medium and terminal for series hybrid electric vehicle

Abstract

The present invention discloses a heater control method, storage medium, and terminal for a series hybrid electric vehicle. The hybrid vehicle includes an engine and a generator. The method includes the following steps: upon receiving a heater demand signal, sending a signal to adjust the engine power point according to the corresponding strategy of the heater pre-start step and / or the heater control step; wherein the engine power point includes engine torque and engine speed, wherein the engine regulates the engine torque and the generator regulates the engine speed. Compared with the prior art, the engine power point of the present invention is basically constant under different ambient temperatures. Upon receiving the heater demand signal, the engine power point is adjusted to match the heater demand. Furthermore, when the engine is not started or when driving in winter, the shortcomings of slow temperature rise and loud engine noise after the heater is turned on are overcome.

Description

Technical Field

[0001] The present invention relates to the field of hybrid electric vehicles, and in particular to a warm air control method, a storage medium and a terminal for a series hybrid electric vehicle. Background Art

[0002] Series hybrid electric vehicles, sometimes also defined as extended-range electric vehicles, draw their power from at least two different energy sources, typically an internal combustion engine driving a generator to generate electricity for the electric motor, with a battery system providing some energy. Due to the non-mechanical connection between the various power components, the traditional vehicle's drivetrain can be eliminated, increasing layout flexibility. Compared to traditional internal combustion engine vehicles, electric vehicles offer zero-polluting mobility emissions, multiple energy sources, and high efficiency. The control of a hybrid electric vehicle's drive system is fundamentally different from that of a pure electric drive system.

[0003] When driving at low loads, series hybrid electric vehicles can use either pure electric drive mode or pure engine drive mode. Pure electric drive mode is mainly used in urban road environments with high emission requirements. When driving at high loads (such as overtaking or climbing a hill with a full load), series hybrid electric vehicles use a hybrid drive mode, with electricity coming from the engine-generator set and the battery pack.

[0004] Therefore, in most cases, series hybrid vehicles (SHEVs) try to keep the engine in a shutdown state to reduce fuel consumption. Furthermore, during driving, when the engine is in use, SHEVs operate at specific power points. This is to prevent excessive fuel consumption caused by unsteady-state operation and to maximize engine operation within the optimal fuel consumption and efficiency range. Therefore, if the engine's universal characteristic curve is not ideal, vehicle manufacturers will operate the engine at a fixed power point.

[0005] In winter or spring, when the outside temperature drops, drivers of series hybrid electric vehicles may need heating due to the temperature. However, because the engine is either stopped or in use but at a low temperature, without changing the engine power point, the interior temperature rises slowly, failing to respond to the heating demand in a timely manner. This can even result in cold air blowing, and the engine noise is loud, making the driving experience less pleasant. Summary of the Invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and to provide a heating control method, a storage medium and a terminal for a series hybrid electric vehicle.

[0007] The object of the present invention is achieved through the following technical solutions:

[0008] A first aspect of the present invention provides a method for controlling heating of a series hybrid vehicle, wherein the hybrid vehicle includes an engine and a generator, and the method comprises the following steps:

[0009] After receiving the heating demand signal, sending a signal for adjusting the engine power point according to the corresponding strategy of the heating pre-start step and / or the heating control step;

[0010] The engine power point includes engine torque and engine speed, wherein the engine regulates the engine torque and the generator regulates the engine speed.

[0011] Furthermore, the warm air control step includes:

[0012] Get the ambient temperature outside the vehicle;

[0013] Adjust the engine power point according to the ambient temperature outside the vehicle.

[0014] Furthermore, adjusting the engine power point according to the ambient temperature outside the vehicle specifically includes:

[0015] The lower the ambient temperature, the greater the engine power point.

[0016] Furthermore, the lower the ambient temperature, the greater the engine power point, specifically including:

[0017] When the ambient temperature is lower, the engine torque remains unchanged and the engine speed is higher.

[0018] Furthermore, the engine speed changes in a broken line pattern, that is, within a certain temperature difference, the engine speed remains at the same level.

[0019] Furthermore, the warm air pre-start step includes:

[0020] In a pre-start sub-step, the generator fully drives the engine to start at a first engine power point within a preset time, after which the engine begins ignition and fuel injection;

[0021] The warm-up sub-step is located after the pre-start sub-step, and the engine continues to operate at the second engine power point until the engine coolant temperature reaches a preset value and then stops; wherein the second engine power point is greater than the first engine power point, the engine speed at the first engine power point is greater than the engine speed at the second engine power point, and the engine torque at the first engine power point is less than the engine torque at the second engine power point.

[0022] Furthermore, when the engine temperature is lower, the engine speed in the first engine power point is higher, and the torque in the first engine power point is lower.

[0023] Furthermore, the length of the preset time is determined by the length of the exhaust gas treatment device and / or the preset temperature of the catalyst. The longer the exhaust gas treatment device and / or the higher the preset temperature of the catalyst, the longer the preset time.

[0024] A second aspect of the present invention provides a storage medium having computer instructions stored thereon, wherein the computer instructions, when executed, execute the steps of the heating control method based on a series hybrid electric vehicle.

[0025] According to a third aspect of the present invention, a terminal is provided, comprising a memory and a processor, wherein the memory stores computer instructions that can be run on the processor, and when the processor runs the computer instructions, the steps of the heating control method based on a series hybrid vehicle are executed.

[0026] The beneficial effects of the present invention are:

[0027] (1) In an exemplary embodiment of the present invention, the entire control method is applicable to a hybrid power control unit, that is, the hybrid power control unit itself obtains a demand signal and sends a control signal. Among them, the warm air pre-start step is mainly used when the engine is in a stopped state, and the warm air control step is mainly used when the engine is in use but the temperature is low. Regardless of the state, according to the corresponding strategy of the corresponding step, a signal for adjusting the size of the engine power point is sent, wherein the engine power point includes the engine torque (through engine regulation) and the engine speed (through generator regulation), both of which are positive adjustments to the engine power point (which can be understood as engine power point = engine torque * engine torque * constant).

[0028] Compared with the existing technology, the power point of the engine is basically constant at different ambient temperatures. After receiving the heating demand signal, the engine power point is adjusted so that it can match the heating demand, and further overcomes the shortcomings of slow temperature rise in the car and loud engine noise after turning on the heater when the engine is not started or driving in winter.

[0029] The corresponding storage media and terminals also have corresponding effects.

[0030] (2) In another exemplary embodiment of the present invention, the warm air control step adopts a method of changing the engine power point, corresponding to different engine power points according to different ambient temperatures.

[0031] (3) In another exemplary embodiment of the present invention, in the heating control step, the lower the external ambient temperature is, the higher the power of the engine is when it is running, thereby obtaining a higher engine temperature to ensure the heating demand in the vehicle.

[0032] (4) In another exemplary embodiment of the present invention, in the heating control step, as the ambient temperature decreases, the engine speed increases, while at the same time ensuring that the engine torque remains unchanged. This approach can reduce fuel consumption because, under the premise of increasing the same engine power, the fuel consumption caused by the increase in engine torque is greater than the fuel consumption caused by the increase in speed.

[0033] (5) In another exemplary embodiment of the present invention, the engine speed changes in a broken line pattern, that is, within a certain temperature difference, the engine speed remains at the same level. According to heat conduction theory, when the ambient temperature difference is 3-4°C, the difference in heat conducted is not large. Within the range of heat changes that the human body can receive, the engine operating at the same power point is sufficient to meet the heating needs. Moreover, for a series engine, reducing fuel consumption by reducing the change in the engine power point is a necessary means. Therefore, the use of a broken line pattern is more appropriate than the use of a curved line pattern here.

[0034] (6) In another exemplary embodiment of the present invention, the heater pre-start step is applicable when the engine is not started. It mainly solves the problem of cold air blowing inside the car when the heater is turned on in winter. During the engine pre-start, the method of first high speed and low torque and then low speed and high torque is adopted, which not only ensures the rapid increase of engine cooling temperature and reduces noise.

[0035] (7) In another exemplary embodiment of the present invention, in the warm air pre-start step, when the engine temperature is lower, the engine speed in the first engine power point is higher, and the torque in the first engine power point is lower, the engine start-up can be smoother, while reducing the generation of pollutants and speeding up the process of exhaust gas reaching the catalyst.

[0036] (8) In another exemplary embodiment of the present invention, the working time of the warm air pre-start step is mainly determined by the length of the automobile exhaust treatment device and the preset temperature of the catalyst (the temperature when the catalyst conversion efficiency reaches 50%-60%). The longer the exhaust treatment device and the higher the preset temperature of the catalyst, the longer the working time of this stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic structural diagram of a series hybrid electric vehicle provided in an exemplary embodiment of the present invention;

[0038] Figure 2 This is a flow chart of a heating control method based on a series hybrid electric vehicle provided in an exemplary embodiment of the present invention;

[0039] Figure 3 A schematic diagram of a heating control step provided in an exemplary embodiment of the present invention using a method of varying the engine power point;

[0040] Figure 4 It is a schematic diagram of a warm air pre-starting step provided in an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is described clearly and completely below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships described in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] like Figure 1 As shown in the figure, a series hybrid vehicle uses a hybrid control unit to control the engine control unit and the generator control unit based on the acquired control parameters. For a series engine, the engine and generator are generally mechanically connected, and the engine speed is controlled by the generator. The engine control unit is used to control the engine torque, and the generator control unit is used to control the generator speed and further regulate the engine speed (similar to the engine load).

[0046] In this exemplary embodiment, the control parameters include but are not limited to engine temperature, external ambient temperature, and internal heating demand temperature.

[0047] In existing technology, series hybrid vehicles (SHEVs) try to keep the engine in a shutdown state to reduce fuel consumption. However, during operation, the engine in a SHEV will always operate at a few specific power points (even if the power point is adjusted, it is primarily to meet the current power requirements of the vehicle). Furthermore, the engine's non-steady-state operation results in additional fuel consumption, and the goal is to maximize engine operation within the optimal fuel consumption and high efficiency range. Therefore, when the engine's universal characteristic curve is not ideal, vehicle manufacturers will operate the engine at a fixed power point.

[0048] When the outside temperature drops in winter or spring, the driver of a series hybrid electric vehicle will have a demand for heating due to the temperature:

[0049] (1) When the engine is stopped and there is a need for heating, if a fixed engine power point pre-start is used, the engine will be warmed up and the air will be blown at the same time. At this time, cold air will be blown in the car during the warm air pre-start stage, and the engine will enter the use state after the warm-up is completed; (2) When the engine is in use but the temperature is low, if there is a need for heating, without changing the engine power point, there will be problems of insufficient heating in the car and slow temperature rise.

[0050] See also Figure 2 , Figure 2 A heating control method based on a series hybrid vehicle provided in an exemplary embodiment of the present invention is shown. The hybrid vehicle includes an engine and a generator. The method includes the following steps:

[0051] After receiving the heating demand signal, sending a signal for adjusting the engine power point according to the corresponding strategy of the heating pre-start step and / or the heating control step;

[0052] The engine power point includes engine torque and engine speed, wherein the engine regulates the engine torque and the generator regulates the engine speed.

[0053] Specifically, in this exemplary embodiment, the entire control method is applied to the hybrid power control unit, meaning the hybrid power control unit itself receives the demand signal and sends the control signal. The warm air pre-start step is primarily used when the engine is stopped, while the warm air control step is primarily used when the engine is in use but at a lower temperature. Regardless of the state, the corresponding step's strategy sends a signal to adjust the engine power point. The engine power point includes engine torque (controlled by the engine) and engine speed (controlled by the generator), both of which are positive adjustments to the engine power point (which can be understood as engine power point = engine torque * engine torque * constant).

[0054] Therefore, compared with the prior art, where the power point of the engine is basically constant at different ambient temperatures, in this exemplary embodiment, after receiving the heating demand signal, the engine power point is adjusted so that it can match the heating demand, and further overcomes the shortcomings of slow temperature rise in the car and loud engine noise when the heater is turned on when the engine is not started or when driving in winter.

[0055] More preferably, in an exemplary embodiment, the warm air control step includes:

[0056] Get the ambient temperature outside the vehicle;

[0057] Adjust the engine power point according to the ambient temperature outside the vehicle.

[0058] Specifically, in this exemplary embodiment, the heating control step is applicable to the case where the engine has been started, and it mainly solves the problem that the temperature inside the vehicle rises slowly when the heating is turned on in winter.

[0059] More specifically, since heat dissipates more quickly as the ambient temperature drops, maintaining a high engine temperature is crucial to maintaining warm air inside the vehicle. However, the power point of the engines in currently commercially available series hybrid vehicles (SHEVs) remains essentially constant across different ambient temperatures. This results in insufficient heating in the cold winter and excessive heating in the warm spring. The primary reason for this is that, in SHEVs, the engine operates at several specific, high-efficiency power points throughout the vehicle's operation. This is to prevent excessive fuel consumption during unsteady-state operation and to maximize engine operation within the optimal fuel consumption and efficiency range. Therefore, when the engine's universal characteristic curve is not ideal, vehicle manufacturers will operate the engine at a fixed power point.

[0060] Therefore, in this exemplary embodiment, the engine power point is changed, that is, Figure 3As shown in the figure, different ambient temperatures correspond to different engine power points.

[0061] More preferably, in an exemplary embodiment, adjusting the engine power point according to the ambient temperature outside the vehicle specifically includes:

[0062] The lower the ambient temperature, the greater the engine power point.

[0063] Specifically, in this exemplary embodiment, Figure 3 As shown, the lower the external ambient temperature is, the higher the power of the engine is when it is working, thereby obtaining a higher engine temperature to ensure the heating demand in the car.

[0064] More preferably, in an exemplary embodiment, the lower the ambient temperature, the greater the engine power point, specifically including:

[0065] When the ambient temperature is lower, the engine torque remains unchanged and the engine speed is higher.

[0066] Specifically, in this exemplary embodiment, Figure 3 As shown in the figure, as the ambient temperature decreases, the engine speed increases, but at the same time the engine torque must remain unchanged. This method is mainly used to reduce fuel consumption: because under the premise of increasing the same engine power, the fuel consumption caused by the increase in engine torque is greater than the fuel consumption caused by the increase in speed. At the same time, Figure 3 As shown, the engine's water pump speed increases with the increase of the engine speed, and the increasing process shows a step-like increasing trend, and vice versa.

[0067] More preferably, in an exemplary embodiment, Figure 3 As shown, the engine speed changes in a broken line pattern, that is, within a certain temperature difference, the engine speed remains at the same level.

[0068] Specifically, in this exemplary embodiment, according to the theory of heat conduction, when the ambient temperature difference is 3-4°C, the difference in heat conducted is not large. Within the range of heat changes that the human body can receive, the engine operating at the same power point is sufficient to meet the heating needs; and for a series engine, reducing fuel consumption by reducing the change in the engine power point is a necessary means, so here, the use of a broken line change is more appropriate than the use of a curved line change.

[0069] More preferably, in an exemplary embodiment, Figure 4 As shown, the warm air pre-start step includes:

[0070] In a pre-start sub-step, the generator fully drives the engine to start at a first engine power point within a preset time, after which the engine begins ignition and fuel injection;

[0071] The warm-up sub-step is located after the pre-start sub-step, and the engine continues to operate at the second engine power point until the engine coolant temperature reaches a preset value and then stops; wherein the second engine power point is greater than the first engine power point, the engine speed at the first engine power point is greater than the engine speed at the second engine power point, and the engine torque at the first engine power point is less than the engine torque at the second engine power point.

[0072] Specifically, in this exemplary embodiment, the heater pre-start step is applicable when the engine is not started. This primarily addresses the issue of cold air blowing inside the vehicle when the heater is on in winter. During engine pre-start, a high-speed, low-torque approach is employed first, followed by a low-speed, high-torque approach. This ensures a rapid increase in engine cooling temperature and reduces noise.

[0073] More specifically, when using the "high speed, low torque" approach in the pre-start sub-step, there's no requirement for the first engine power point (i.e., no minimum requirement). Instead, the focus is on the time it takes for the burned gas to reach the catalyst. The higher the engine speed, the more engine cycles per unit time, and the more easily the heat generated by engine combustion is carried to the catalyst, significantly accelerating catalyst light-off. Furthermore, during a high-speed, low-torque cold start, pollutant emissions are relatively low.

[0074] When the "low speed, high torque" approach is used in the warm-up sub-step, the engine speed is reduced while the torque is increased until the engine coolant temperature reaches a preset value, at which point the engine shuts down. The higher the engine speed, the more valve seating and opening times per unit time, and the more mechanical components like the crankshaft operate, resulting in greater engine noise. Therefore, using a low speed for warm-up in this sub-step minimizes noise. Furthermore, the engine's high second power point and high heat generation shorten the warm-up time.

[0075] Additional explanation is needed:

[0076] (1) In this exemplary embodiment, the engine will continue to operate at the first power point for a period of time, and will not immediately drop to the low speed of the warm-up sub-step after reaching a high speed.

[0077] Compared with the prior art, which starts to reduce the speed after reaching a high speed, this exemplary embodiment continues to work for a period of time, mainly to ensure that the combustion gas during this period can quickly and stably enter the catalyst. After working during this period, the engine is better preheated, and after changing the speed (low speed) later, the generation of pollutants will be much less than in the prior art.

[0078] (2) In this exemplary embodiment, when executing the first power point, ignition and fuel injection are not initiated until the generator has fully driven the engine to the engine speed within the first engine power point. Compared to the prior art low-speed starter starting method, this exemplary embodiment requires a high engine ignition speed, stable engine operation, and good starting stability.

[0079] (3) In this exemplary embodiment, when operating at the second power point, the stop time is mainly controlled by the coolant temperature (stopping when reaching a preset value), not a fixed time.

[0080] More specifically, in a specific exemplary embodiment, as Figure 4 As shown, the engine speed of the first engine power point in the pre-start sub-step is 1800 rpm, and the engine torque of the first engine power point is 15 Nm; while the engine speed of the second engine power point in the warm-up sub-step is 1600 rpm, and the engine torque of the second engine power point is 40 Nm.

[0081] More preferably, in an exemplary embodiment, when the engine temperature is lower, the engine speed in the first engine power point is higher, and the torque in the first engine power point is lower.

[0082] Specifically, in this exemplary embodiment, when the engine is cold started, the lower the current engine temperature is, the higher the engine speed and the lower the torque are during startup, which can make the engine startup smoother while reducing the generation of pollutants.

[0083] More preferably, in an exemplary embodiment, the length of the preset time is determined by the length of the exhaust gas treatment device and / or the preset temperature of the catalyst. The longer the exhaust gas treatment device and / or the higher the preset temperature of the catalyst, the longer the preset time.

[0084] Specifically, in this exemplary embodiment, the working time of the warm air pre-start step is mainly determined by the length of the automobile exhaust treatment device and the preset temperature of the catalyst (the temperature when the catalyst conversion efficiency reaches 50%-60%). The longer the exhaust treatment device and the higher the preset temperature of the catalyst, the longer the working time of this stage.

[0085] At the same time, the parameter settings in the first engine power point (such as the speed setting of 1800rpm and the torque setting of 15Nm) are mainly based on the emission characteristics of the engine (obtained from engine tests), and pre-start is performed at the optimal emission performance operating point to minimize pollution.

[0086] With the same inventive concept as the above exemplary embodiment, another exemplary embodiment of the present invention provides a storage medium having computer instructions stored thereon, which, when executed, execute the steps of the heating control method based on a series hybrid electric vehicle.

[0087] Based on this understanding, the technical solution of this embodiment, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product (program product). The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention.

[0088] The program product may be implemented in any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0089] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0090] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0091] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0092] With the same inventive concept as the above exemplary embodiment, another exemplary embodiment of the present invention provides a terminal, comprising a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, and when the processor executes the computer instructions, the steps of the heating control method based on a series hybrid vehicle are executed.

[0093] The electronic device is implemented as a general-purpose computing device. Components of the electronic device may include, but are not limited to, the at least one processing unit, the at least one storage unit, and a bus connecting different system components (including the storage unit and the processing unit).

[0094] The storage unit stores program codes that can be executed by the processing unit, so that the processing unit performs the steps according to various exemplary embodiments of the present invention described in the "Exemplary Method" section above. For example, the processing unit can perform the following steps: Figure 2 The method shown in .

[0095] The storage unit may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM) 3201 and / or a cache memory unit, and may further include a read-only memory unit (ROM).

[0096] The storage unit may also include a program / utility having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0097] The bus can represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0098] The electronic device may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable a user to interact with the electronic device, and / or any device that enables the electronic device to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface. Furthermore, the electronic device may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter. The network adapter communicates with other modules of the electronic device via a bus. It should be understood that other hardware and / or software modules may be used in conjunction with the electronic device, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0099] Through the above description, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented through software or through a combination of software and necessary hardware. Therefore, the technical solution according to this exemplary embodiment can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard drive, etc.) or on a network, and includes several instructions to enable a computing device (such as a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to this exemplary embodiment.

[0100] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications can be made based on the above descriptions. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A heating control method for a series hybrid electric vehicle, wherein the hybrid electric vehicle includes an engine and a generator, characterized in that: The method comprises the following steps: After receiving the heating demand signal, sending a signal for adjusting the engine power point according to the corresponding strategy of the heating pre-start step and / or the heating control step; The engine power point includes engine torque and engine speed, wherein the engine controls the engine torque and the generator controls the engine speed; The warm air pre-start step includes: In a pre-start sub-step, the generator fully drives the engine to start at a first engine power point within a preset time, after which the engine begins ignition and fuel injection; The warm-up sub-step is located after the pre-start sub-step, and the engine continues to operate at the second engine power point until the engine coolant temperature reaches a preset value and then stops; wherein the second engine power point is greater than the first engine power point, the engine speed at the first engine power point is greater than the engine speed at the second engine power point, and the engine torque at the first engine power point is less than the engine torque at the second engine power point.

2. The heating control method for a series hybrid electric vehicle according to claim 1, characterized in that: The warm air control step includes: Get the ambient temperature outside the vehicle; Adjust the engine power point according to the ambient temperature outside the vehicle.

3. The heating control method for a series hybrid electric vehicle according to claim 2, characterized in that: The adjusting of the engine power point according to the ambient temperature outside the vehicle specifically includes: The lower the ambient temperature, the greater the engine power point.

4. The heating control method for a series hybrid electric vehicle according to claim 3, characterized in that: The lower the ambient temperature, the greater the engine power point, specifically including: When the ambient temperature is lower, the engine torque remains unchanged and the engine speed is higher.

5. The heating control method for a series hybrid electric vehicle according to claim 4, characterized in that: The engine speed changes in a broken line pattern, that is, within a certain temperature difference, the engine speed remains at the same level.

6. The heating control method for a series hybrid electric vehicle according to claim 1, characterized in that: When the engine temperature is lower, the engine speed in the first engine power point is higher, and the torque in the first engine power point is lower.

7. The heating control method for a series hybrid electric vehicle according to claim 1, characterized in that: The length of the preset time is determined by the length of the exhaust gas treatment device and / or the preset temperature of the catalyst. The longer the exhaust gas treatment device and / or the higher the preset temperature of the catalyst, the longer the preset time.

8. A storage medium having computer instructions stored thereon, characterized in that: When the computer instructions are executed, the steps of the heating control method based on a series hybrid vehicle are executed according to any one of claims 1 to 7.

9. A terminal comprising a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, characterized in that: When the processor runs the computer instructions, the processor performs the steps of the heating control method based on a series hybrid vehicle according to any one of claims 1 to 7.

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