Range extender power generation control method, device, computer equipment and storage medium

Abstract

This application relates to a method, apparatus, computer equipment, and storage medium for controlling the power generation of a range extender. The method includes determining the vehicle's operating condition by comparing current vehicle parameters with preset parameters, including idling and driving conditions. When the operating condition is idling and the power generation under idling exceeds a power generation threshold, the power generation of the range extender is limited according to a power generation limit parameter. When the operating condition is driving and the battery temperature under driving exceeds a temperature threshold, the power generation of the range extender is compensated according to a power generation compensation parameter. The range extender's power generation is controlled based on the limited or compensated power generation to achieve battery charging under idling or battery power compensation under driving. Using this method, the heat damage caused by continuous operation of the power system in the prior art can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive control technology, and in particular to a method, apparatus, computer equipment, and storage medium for controlling the power generation of a range extender. Background Technology

[0002] Range-extended electric vehicles are equipped with both a power battery and a range extender. The power output from the engine in the range extender drives a generator to generate electricity, thereby increasing the driving range of the new energy vehicle.

[0003] In range-extended electric vehicles, the range extender can start generating electricity in both idling and driving conditions to charge the battery, provide power to high-voltage accessories, or drive the vehicle. However, in idling conditions, the engine compartment has poor heat dissipation capacity, which may cause heat damage due to the continuous power generation of the range extender. This may lead to damage to components such as the electric drive circuit under the accumulated heat. On the other hand, in driving conditions, the heat accumulation caused by the continuous output of the battery also has a heat damage effect. Summary of the Invention

[0004] Based on this, a method, apparatus, computer equipment, and storage medium for controlling the power generation of a range extender are provided to improve the heat damage problem caused by continuous operation of the power system in the prior art.

[0005] On the one hand, a method for controlling the power generation of a range extender is provided, the method comprising:

[0006] The vehicle's operating condition is determined by comparing the current vehicle parameters with preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0007] When the operating condition is idling, and the power generation under idling is greater than the power generation threshold, the power generation of the range extender is limited according to the power generation limit parameter.

[0008] When the operating condition is driving, and the battery temperature under driving conditions is greater than the temperature threshold, the power generation of the range extender is compensated according to the power generation compensation parameters.

[0009] The range extender generates electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0010] In one embodiment, limiting the power generation of the range extender according to the power generation limitation parameter includes:

[0011] Obtain the first power output of the range extender under idling conditions;

[0012] The power generation of the range extender under idling conditions is obtained based on the first power generation output.

[0013] When the power generation exceeds the power generation threshold, a limiting coefficient is determined;

[0014] The second power generation is obtained by multiplying the limiting coefficient by the first power generation, and the range extender is controlled for power generation based on the second power generation.

[0015] In one embodiment, determining the limiting coefficient includes:

[0016] The limiting coefficient is determined based on temperature parameters, including one or more of engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature, wherein the limiting coefficient is negatively correlated with the value of the temperature parameters, and the limiting coefficient is greater than or equal to 0 and less than or equal to 1.

[0017] In one embodiment, compensating the power generation of the range extender according to the power generation compensation parameters includes:

[0018] Obtain the third power generation of the range extender and the battery temperature under driving conditions;

[0019] When the battery temperature is greater than the temperature threshold, a compensation power is determined, and a fourth power is obtained based on the sum of the compensation power and the third power generation, so as to control the power generation of the range extender based on the fourth power generation.

[0020] In one embodiment, obtaining the third power generation of the range extender under driving conditions includes:

[0021] Obtain the first power output of the range extender under idling conditions;

[0022] Obtain the power required by the drive system;

[0023] The third power generation is determined based on the sum of the power demand of the drive system and the first power generation.

[0024] In one embodiment, determining the compensation power includes:

[0025] The compensation power is determined based on the battery temperature, wherein the compensation power is positively correlated with the battery temperature.

[0026] In one embodiment, obtaining the first power generation of the range extender under idling conditions includes:

[0027] The base power generation is determined based on the battery charge of the vehicle, wherein the base power generation is negatively correlated with the battery charge.

[0028] Obtain the power requirement of the high-voltage accessories of the vehicle;

[0029] The first power generation capacity is determined based on the sum of the power demand of the high-voltage accessory and the basic power generation capacity.

[0030] In another aspect, a range extender power generation control device is provided, the device comprising:

[0031] The judgment module is used to determine the vehicle's operating condition based on a comparison between the current vehicle parameters and preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0032] The adjustment calculation module is used to limit the power generation of the range extender according to the power generation limit parameter when the operating condition is idling and the power generation under idling is greater than the power generation threshold; or to compensate the power generation of the range extender according to the power generation compensation parameter when the operating condition is driving and the battery temperature under driving is greater than the temperature threshold.

[0033] The control module is used to control the range extender to generate electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0034] In another aspect, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method.

[0035] A computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the method.

[0036] The aforementioned range extender power generation control method, device, computer equipment, and storage medium determine the vehicle's operating condition by comparing vehicle parameters with preset parameters. Under idling conditions, when the power generation exceeds a threshold, measures are introduced to limit the power generation, thereby reducing the heat damage caused by the continuous power generation of the range extender. Under driving conditions, when the battery temperature exceeds a temperature threshold, the power generation of the range extender is compensated, and the compensation amount is used to compensate for the battery output power, thereby reducing the battery output power and reducing the heat damage caused by the continuous output of the battery. Attached Figure Description

[0037] Figure 1 This is a flowchart illustrating a range extender power generation control method in one embodiment;

[0038] Figure 2 This is a schematic diagram of the power generation control process in one embodiment;

[0039] Figure 3This is a structural block diagram of the range extender power generation control device in one embodiment;

[0040] Figure 4 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] Range-extended electric vehicles (REEVs) are a type of hybrid electric vehicle that uses both gasoline and electricity. They operate by using an engine to generate electricity, which is then used to power the vehicle. When the battery pack is fully charged, the vehicle runs in pure electric mode. When the battery is low, the engine starts, driving a generator to charge the battery.

[0043] Existing range-extended vehicles can still generate electricity to charge the battery while idling. However, compared to generating electricity while driving, the lack of airflow to help dissipate heat can lead to heat damage caused by the range extender generating electricity, which may cause damage to the electric drive circuit in severe cases.

[0044] The range extender power generation control method provided in this application is applicable to solving the problem of heat damage to the range extender under idling conditions.

[0045] In one embodiment, such as Figure 1 As shown, a method for controlling the power generation of a range extender is provided, including the following steps:

[0046] Step 101: Determine the vehicle's operating condition by comparing the current vehicle parameters with preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0047] For example, when the vehicle is in P gear and the speed is below a certain speed, such as 3 km / h, the vehicle can be determined to be in idling condition; otherwise, it is in driving condition.

[0048] Step 102: When the operating condition is idling, and the power generation under idling is greater than the power generation threshold, the power generation of the range extender is limited according to the power generation limit parameter; or, when the operating condition is driving, and the battery temperature under driving is greater than the temperature threshold, the power generation of the range extender is compensated according to the power generation compensation parameter.

[0049] During idling, the range extender can remain running to charge the battery. The power generation of the range extender is calculated cumulatively from the moment the vehicle enters idling. As the power generation increases, the heat generated by the range extender increases synchronously and gradually accumulates. When the power generation reaches the threshold, the risk of heat damage can be considered to have increased to a level that cannot be ignored, and measures need to be introduced to avoid damage. The range extender power generation control method provided in this application avoids the continuous increase of heat damage by limiting the power generation of the range extender.

[0050] It is understood that the power generation threshold can be determined based on actual vehicle calibration, and can have different values ​​under different seasons, different temperature parameters, etc.

[0051] Under driving conditions, the vehicle battery continuously outputs high power to drive the vehicle. As the battery continues to output power, the temperature gradually rises. When the battery temperature exceeds the temperature threshold (the temperature threshold can be determined according to the battery power model, with a typical value of 48°C), the range extender generates electricity to compensate for the power, thereby reducing the battery's output power without affecting the normal driving of the vehicle. This helps to curb the temperature rise of the power battery under driving conditions and extend the battery's lifespan.

[0052] It is understandable that the third power generation can be the actual power generation of the range extender under driving conditions.

[0053] Step 103: Control the range extender to generate electricity according to the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0054] The range extender power generation control method disclosed in this application limits or compensates the range extender power for different causes of heat damage under idling and driving conditions, thereby reducing the risk of heat damage.

[0055] In one embodiment, when it is determined that the vehicle is idling, the following steps are taken to limit the power generation of the range extender:

[0056] 1) Obtain the first power output of the range extender, and obtain the power output of the range extender under idling conditions based on the first power output.

[0057] For example, the vehicle's infotainment system can record the real-time power generation of the vehicle from the moment it starts idling to the current moment, and then calculate the amount of power generated by integrating the power generation time.

[0058] During the short period when the vehicle enters idling mode, the range extender generates little electricity and has a low risk of thermal damage, allowing it to maintain high-power generation.

[0059] 2) When the power generation is greater than the power generation threshold, a limiting coefficient is determined, and a second power generation is obtained by multiplying the limiting coefficient by the first power generation, so as to control the power generation of the range extender according to the second power generation.

[0060] In this embodiment, the power generation limit parameter is configured as a limit coefficient to proportionally limit the first power generation of the range extender. In another embodiment, the power generation limit parameter can be configured as a fixed value or a fluctuating value.

[0061] The range extender power generation control method provided in this application compares the cumulative power generation of the range extender under idling conditions with a power generation threshold, and limits the power generation of the range extender based on the comparison result. This prevents the range extender from continuing to accumulate heat when the power generation exceeds the power generation threshold, thereby avoiding heat damage and better protecting the key components of the vehicle, ensuring they operate within a suitable temperature range, improving the service life of components, and reducing the impact on the cooling capacity of the electric drive system.

[0062] In one embodiment, the limiting coefficient is determined based on temperature parameters, including one or more of engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature, wherein the limiting coefficient is negatively correlated with the value of the temperature parameters, and the limiting coefficient is greater than or equal to 0 and less than or equal to 1.

[0063] It is understandable that the higher the engine coolant temperature or the higher the electric drive circuit coolant temperature, the more heat accumulates in the range extender, and the greater the risk of thermal damage; the higher the ambient temperature, the easier it is for the range extender engine to accumulate heat.

[0064] Determining the limiting coefficient by combining multiple temperature parameters is more in line with the actual heat generation and dissipation of the vehicle.

[0065] In this embodiment, the limiting coefficient is dynamically determined based on one or more parameters, such as engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature. This can reduce the risk of heat damage while maintaining appropriate power generation to achieve faster charging.

[0066] In one embodiment, compensating the power generation of the range extender according to the power generation compensation parameters includes:

[0067] Obtain the third power generation of the range extender and the battery temperature under driving conditions;

[0068] When the battery temperature is greater than the temperature threshold, a compensation power is determined, and a fourth power is obtained based on the sum of the compensation power and the third power generation, so as to control the power generation of the range extender based on the fourth power generation.

[0069] In this embodiment, the power generation compensation parameter is configured as a compensation power, which is added to the original power for compensation. In another embodiment, the power generation compensation parameter can be configured as a compensation coefficient, with the product of a compensation coefficient greater than 1 and the third power generation power as the fourth power generation power.

[0070] The acquisition of the third power generation of the range extender under driving conditions includes:

[0071] Obtain the first power output of the range extender under idling conditions;

[0072] Obtain the power required by the drive system;

[0073] The third power generation is determined based on the sum of the power demand of the drive system and the first power generation.

[0074] In one embodiment, the value of the compensation power is determined based on the battery temperature. For example, a mathematical expression or mapping table between battery temperature and compensation power can be established through calibration, and the compensation power is positively correlated with the battery temperature, with the higher the battery temperature, the greater the compensation power.

[0075] On the other hand, the maximum value of the compensation power is limited, for example, the compensation power is limited to less than or equal to 20KW, to avoid the total power exceeding the limit capacity of the range extender.

[0076] In one embodiment, the value of the first power generation of the range extender is determined jointly based on the base power generation and the power demand of the high-voltage accessory. Specifically, the first power generation is obtained in the following manner:

[0077] 1) Determine the basic power generation capacity based on the battery charge of the vehicle to ensure the basic power generation capacity of the range extender. The basic power generation capacity is negatively correlated with the battery charge. The relationship between the battery charge and the basic power generation capacity can be obtained through calibration. Generally, the higher the battery charge, the lower the basic power generation capacity.

[0078] 2) Obtain the power requirement of the high-voltage accessories of the vehicle.

[0079] Even when the vehicle is idling, high-voltage accessories such as the electric compressor and PTC heater may still be running, and the power demand of these high-voltage accessories can still be met by the range extender.

[0080] 3) Determine the first power generation capacity based on the sum of the power demand of the high-voltage accessory and the basic power generation capacity.

[0081] like Figure 2 An exemplary flowchart of the range extender power generation control method of this application is shown.

[0082] It should be understood that, although Figure 1-2 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1-2 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0083] In one embodiment, such as Figure 3 As shown, a range extender power generation control device is provided, comprising: a judgment module, an adjustment calculation module, and a control module, wherein:

[0084] The judgment module is used to determine the vehicle's operating condition based on a comparison between the current vehicle parameters and preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0085] The adjustment calculation module is used to limit the power generation of the range extender according to the power generation limit parameter when the operating condition is idling and the power generation under idling is greater than the power generation threshold; or to compensate the power generation of the range extender according to the power generation compensation parameter when the operating condition is driving and the battery temperature under driving is greater than the temperature threshold.

[0086] The control module is used to control the range extender to generate electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0087] The range extender power generation control device provided in this application determines the vehicle's operating condition by comparing vehicle parameters with preset parameters. Under idling conditions, when the power generation exceeds a threshold, a power generation limitation measure is introduced to reduce the heat damage caused by continuous power generation from the range extender. Under driving conditions, when the battery temperature exceeds a temperature threshold, the power generation of the range extender is compensated, and the compensation amount is used to compensate for the battery output power to reduce the battery output power, thereby reducing the heat damage caused by continuous battery output.

[0088] In one embodiment, the adjustment calculation module obtains the first power generation of the range extender under idling conditions; and obtains the power generation of the range extender under idling conditions based on the first power generation; when the power generation is greater than the power generation threshold, a limiting coefficient is determined; and a second power generation is obtained based on the product of the limiting coefficient and the first power generation.

[0089] In this embodiment, the power generation limitation method under idling conditions is configured to limit the power generation proportionally through a limitation coefficient.

[0090] For example, the limiting coefficient is determined based on temperature parameters, which include one or more of engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature. The limiting coefficient is negatively correlated with the value of the temperature parameters, and the limiting coefficient is greater than or equal to 0 and less than or equal to 1.

[0091] It is understood that the adjustment calculation module can pre-store the mapping relationship between the limiting coefficient and one or more of the engine water temperature, ambient temperature, or electric drive circuit water temperature, so as to call it when needed.

[0092] In one embodiment, the adjustment calculation module obtains the third power generation of the range extender and the battery temperature under driving conditions; when the battery temperature is greater than the temperature threshold, it determines the compensation power, and obtains the fourth power generation based on the sum of the compensation power and the third power generation.

[0093] For example, the compensation power is determined based on the battery temperature, and the compensation power is positively correlated with the battery temperature.

[0094] In one embodiment, the adjustment calculation module determines the third power generation capacity according to the following steps:

[0095] Obtain the first power output of the range extender under idling conditions;

[0096] Obtain the power required by the drive system;

[0097] The third power generation is determined based on the sum of the power demand of the drive system and the first power generation.

[0098] As an example, the first power generation includes two parts: basic power generation and high-voltage accessory power demand. The basic power generation is determined based on the vehicle's battery charge, and the basic power generation is negatively correlated with the battery charge.

[0099] Specific limitations regarding the range extender power generation control device can be found in the limitations of the range extender power generation control method described above, and will not be repeated here. Each module in the aforementioned range extender power generation control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0100] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 4 As shown, the computer device includes a processor, memory, network interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for controlling the power generation of a range extender. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0101] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0102] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0103] Step A: Determine the vehicle's operating condition by comparing the current vehicle parameters with preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0104] Step B: When the operating condition is idling, and the power generation under idling is greater than the power generation threshold, the power generation of the range extender is limited according to the power generation limit parameter; when the operating condition is driving, and the battery temperature under driving is greater than the temperature threshold, the power generation of the range extender is compensated according to the power generation compensation parameter.

[0105] Step C: Control the range extender to generate electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0106] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0107] Obtain the first power output of the range extender under idling conditions;

[0108] The power generation of the range extender under idling conditions is obtained based on the first power generation output.

[0109] When the power generation exceeds the power generation threshold, a limiting coefficient is determined;

[0110] The second power generation is obtained by multiplying the limiting coefficient by the first power generation, and the range extender is controlled for power generation based on the second power generation.

[0111] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0112] The limiting coefficient is determined based on the temperature parameter.

[0113] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0114] Obtain the third power generation of the range extender and the battery temperature under driving conditions;

[0115] When the battery temperature is greater than the temperature threshold, a compensation power is determined, and a fourth power is obtained based on the sum of the compensation power and the third power generation, so as to control the power generation of the range extender based on the fourth power generation.

[0116] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0117] The compensation power is determined based on the battery temperature.

[0118] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0119] The third power generation is determined based on the sum of the power demand of the drive system and the first power generation.

[0120] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0121] Step A: Determine the vehicle's operating condition by comparing the current vehicle parameters with preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition.

[0122] Step B: When the operating condition is idling, and the power generation under idling is greater than the power generation threshold, the power generation of the range extender is limited according to the power generation limit parameter; when the operating condition is driving, and the battery temperature under driving is greater than the temperature threshold, the power generation of the range extender is compensated according to the power generation compensation parameter.

[0123] Step C: Control the range extender to generate electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

[0124] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0125] Obtain the first power output of the range extender under idling conditions;

[0126] The power generation of the range extender under idling conditions is obtained based on the first power generation output.

[0127] When the power generation exceeds the power generation threshold, a limiting coefficient is determined;

[0128] The second power generation is obtained by multiplying the limiting coefficient by the first power generation, and the range extender is controlled for power generation based on the second power generation.

[0129] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0130] The limiting coefficient is determined based on temperature parameters, including one or more of engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature, wherein the limiting coefficient is negatively correlated with the value of the temperature parameters, and the limiting coefficient is greater than or equal to 0 and less than or equal to 1.

[0131] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0132] Obtain the third power generation of the range extender and the battery temperature under driving conditions;

[0133] When the battery temperature exceeds a temperature threshold, a compensation power is determined. A fourth power is obtained by summing the compensation power and the third power generation, and the range extender is then controlled based on this fourth power generation. The compensation power is determined based on the battery temperature.

[0134] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0135] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0136] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for controlling the power generation of a range extender, characterized in that, include: The vehicle's operating condition is determined by comparing the current vehicle parameters with preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition. When the operating condition is idling, and the power generation under idling is greater than the power generation threshold, the power generation of the range extender is limited according to the power generation limit parameter. The limitation of the range extender's power generation based on the power generation limitation parameters includes: Obtain the first power output of the range extender under idling conditions; The power generation of the range extender under idling conditions is obtained based on the first power generation output. When the power generation exceeds the power generation threshold, a limiting coefficient is determined; The second power generation is obtained by multiplying the limiting coefficient by the first power generation, and the range extender is controlled for power generation based on the second power generation. When the operating condition is driving, and the battery temperature under driving conditions is greater than the temperature threshold, the power generation of the range extender is compensated according to the power generation compensation parameters. The step of compensating the power generation of the range extender according to the power generation compensation parameters includes: Obtain the third power generation of the range extender and the battery temperature under driving conditions; When the battery temperature is greater than the temperature threshold, the compensation power is determined, and the fourth power generation is obtained based on the sum of the compensation power and the third power generation, so as to control the power generation of the range extender based on the fourth power generation. The range extender generates electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

2. The range extender power generation control method according to claim 1, characterized in that, The determination of the limiting coefficient includes: The limiting coefficient is determined based on temperature parameters, including one or more of engine coolant temperature, ambient temperature, or electric drive circuit coolant temperature, wherein the limiting coefficient is negatively correlated with the value of the temperature parameters, and the limiting coefficient is greater than or equal to 0 and less than or equal to 1.

3. The range extender power generation control method according to claim 1, characterized in that, The acquisition of the third power generation of the range extender under driving conditions includes: Obtain the first power output of the range extender under idling conditions; Obtain the power required by the drive system; The third power generation is determined based on the sum of the power demand of the drive system and the first power generation.

4. The range extender power generation control method according to claim 1, characterized in that, The determination of the compensation power includes: The compensation power is determined based on the battery temperature, wherein the compensation power is positively correlated with the battery temperature.

5. The range extender power generation control method according to claim 1 or 3, characterized in that, The acquisition of the first power generation of the range extender under idling conditions includes: The base power generation is determined based on the battery charge of the vehicle, wherein the base power generation is negatively correlated with the battery charge. Obtain the power requirement of the high-voltage accessories of the vehicle; The first power generation capacity is determined based on the sum of the power demand of the high-voltage accessory and the basic power generation capacity.

6. A range extender power generation control device, characterized in that, The device includes: The judgment module is used to determine the vehicle's operating condition based on a comparison between the current vehicle parameters and preset parameters. The vehicle parameters include gear parameters and vehicle speed parameters, and the operating condition includes idling condition and driving condition. The adjustment calculation module is used to limit the power generation of the range extender according to the power generation limit parameter when the operating condition is idling and the power generation under idling is greater than the power generation threshold. The limitation of the range extender's power generation based on the power generation limitation parameters includes: Obtain the first power output of the range extender under idling conditions; The power generation of the range extender under idling conditions is obtained based on the first power generation output. When the power generation exceeds the power generation threshold, a limiting coefficient is determined; The second power generation is obtained by multiplying the limiting coefficient by the first power generation, and the range extender is controlled for power generation based on the second power generation. Alternatively, it can be used to compensate the power generation of the range extender according to the power generation compensation parameters when the operating condition is a driving condition and the battery temperature under the driving condition is greater than the temperature threshold. The step of compensating the power generation of the range extender according to the power generation compensation parameters includes: Obtain the third power generation of the range extender and the battery temperature under driving conditions; When the battery temperature is greater than the temperature threshold, the compensation power is determined, and the fourth power generation is obtained based on the sum of the compensation power and the third power generation, so as to control the power generation of the range extender based on the fourth power generation. The control module is used to control the range extender to generate electricity based on the limited or compensated power output, so as to achieve battery charging under idling conditions or battery power compensation under driving conditions.

7. A computer device, 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 computer program, it implements the steps of the method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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