Range extender power control method, device and computer readable storage medium

Abstract

The application discloses a range extender power control method, equipment and a computer readable storage medium, and the method comprises the following steps: acquiring the working mode of a current whole vehicle, the current residual power of a power battery and the power change trend; determining a preset output power in a preset output power set based on the residual power and the power change trend; determining the power generation power of a range extender according to the working mode and the preset output power; and controlling the range extender to output the power generation power. Since the power generation power of the range extender under different residual powers and power change trends can be determined under different working modes of the whole vehicle, the power demand of the motor under different working states can be met, the problem of low fuel economy of the range extender caused by the adoption of a single output power under any working state is avoided, the fuel economy of the range extender is improved, and the effect of energy saving is achieved.

Description

Technical Field

[0001] This invention relates to the field of new energy electric vehicle technology, and in particular to a range extender power control method, device and computer-readable storage medium. Background Technology

[0002] Currently, range-extended electric vehicles (REEVs) use a range extender to generate electricity that charges the battery and powers the motor, thus improving the vehicle's range. When the battery's remaining charge is low, the range extender is activated, and the vehicle enters range-extending mode, where the extender replenishes the battery's power. When the battery has sufficient charge, the range extender is deactivated, and the vehicle enters pure electric mode. However, existing range extenders only provide a single power output during motor generation, which cannot meet the various operating conditions and power demands of the motor, resulting in poor fuel economy. Summary of the Invention

[0003] This application provides a range extender power control method, device, and computer-readable storage medium, aiming to improve the fuel economy of the range extender.

[0004] This application provides a range extender power control method, the range extender power control method comprising:

[0005] Obtain the current operating mode of the vehicle, the current remaining charge of the power battery, and the charge change trend;

[0006] Based on the remaining power and the power change trend, a preset output power is determined from a preset output power set;

[0007] The power generation capacity of the range extender is determined according to the operating mode and the preset output power.

[0008] Control the range extender to output the generated power.

[0009] Optionally, the step of determining the preset output power from the preset output power set based on the remaining power and the power change trend includes:

[0010] Determine the power range corresponding to the remaining power, and determine the preset output power set of the range extender based on the power change trend;

[0011] Select a preset output power corresponding to the power range from the preset output power set, wherein each power range has a corresponding preset output power.

[0012] Optionally, the step of determining the power generation capacity of the range extender based on the operating mode and the preset output power includes:

[0013] When the operating mode is intelligent mode, the preset output power is used as the power generation power of the range extender.

[0014] Optionally, the step of determining the power generation capacity of the range extender based on the operating mode and the preset output power includes:

[0015] When the working mode is the forced start mode and the remaining power is less than or equal to the first preset power, the accessory power, the maximum allowable charging power of the battery and the power consumed by the generator are obtained.

[0016] The overall vehicle power is determined based on the power of the accessories, the maximum allowable charging power of the battery, and the power consumption of the generator.

[0017] The power generation capacity of the range extender is determined based on the total vehicle power and the preset output power.

[0018] Optionally, the step of determining the power generation capacity of the range extender based on the vehicle power and the preset output power includes:

[0019] When the total vehicle power is greater than or equal to the preset total vehicle power, the maximum power among the preset total vehicle power and the preset output power is determined;

[0020] The maximum power is determined as the power output of the range extender.

[0021] Optionally, the method includes:

[0022] When the operating mode is pure electric mode and the remaining power is less than the second preset power, the preset output power corresponding to the range extender in the pure electric mode is obtained;

[0023] The preset output power corresponding to the pure electric mode is used as the power generation power of the range extender;

[0024] The range extender is controlled to output the generated power in the pure electric mode.

[0025] Optionally, the method further includes:

[0026] When the remaining power is less than the second preset power, the maximum allowable output power of the generator is limited according to the power generation capacity of the range extender.

[0027] Optionally, limiting the maximum permissible output power of the generator based on the power generation capacity of the range extender includes:

[0028] When the power generation of the range extender is greater than or equal to the first preset power generation, the maximum allowable output power of the generator is limited to be less than or equal to the first preset output power.

[0029] When the power output of the range extender is less than the first preset power output but greater than or equal to the second preset power output, the maximum allowable output power of the generator is limited to be less than the second preset output power.

[0030] When the power output of the range extender is less than the second preset power output, the maximum allowable output power of the generator is limited to be less than the third preset output power, wherein the first preset power output is greater than the second preset power output, the first preset output power is greater than the second preset output power, and the second preset output power is greater than the third preset output power.

[0031] In addition, to achieve the above objectives, the present invention also provides a range extender power control device, the range extender power control device comprising: a memory, a processor, and a range extender power control program stored in the memory and executable on the memory, wherein the range extender power control program, when executed by the memory, implements the steps of the above-described range extender power control method.

[0032] In addition, to achieve the above objectives, the present invention also provides a computer-readable storage medium storing a range extender power control program thereon, which, when executed by the memory, implements the steps of the range extender power control method described above.

[0033] This application provides a technical solution for range extender power control method, device, and computer-readable storage medium. Compared with related technologies that only have a single output power during motor power generation, this application can determine the range extender power generation under different remaining power and power change trends under different vehicle operating modes, and then control the range extender to output the corresponding power generation, thereby meeting the power requirements of the motor under different operating states and improving the fuel economy of the range extender. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating the first embodiment of the range extender power control method of the present invention;

[0035] Figure 2 This is a schematic diagram of the power control device for the range extender of the present invention.

[0036] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings are only one embodiment and not the entirety of the invention. Detailed Implementation

[0037] Currently, range extenders have a single power output, which cannot meet the different operating states and corresponding power requirements of the motor. Regardless of the operating state, the range extender's output power is fixed, leading to reduced fuel economy. To address this issue, this application proposes a range extender power control method. This method can determine the range extender's power generation under different remaining battery levels and battery change trends in different vehicle operating modes. This satisfies the motor's power requirements under different operating states, avoiding the low fuel economy caused by using a single output power in all operating states. This improves the range extender's fuel economy and achieves energy savings.

[0038] To better understand the above technical solutions, exemplary embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0039] First embodiment.

[0040] like Figure 1 As shown, in the first embodiment of this application, the range extender power control method of this application includes the following steps:

[0041] Step S110: Obtain the current operating mode of the vehicle, the current remaining power of the power battery, and the power change trend.

[0042] In this embodiment, the vehicle of this application includes, but is not limited to, electric vehicles, trucks, and vans equipped with range extenders. The vehicle's operating modes include, but are not limited to, intelligent mode, pure electric mode, and forced start mode, with different methods for calculating the range extender's output power in each mode. Each operating mode can be activated or deactivated via corresponding function buttons on the vehicle; alternatively, it can be activated or deactivated via a terminal device connected to the vehicle controller, such as a user terminal or remote control terminal.

[0043] Optionally, the corresponding operating mode can also be started or stopped when the corresponding start or stop conditions are met. For example, including but not limited to the following situations:

[0044] The intelligent mode can be an energy-saving mode, an autonomous driving mode, a voice control mode, etc. Whether to activate or deactivate the intelligent mode can be determined based on at least one of the following: the usage information of the devices on the vehicle, the current status of the vehicle, and the current ambient temperature. For example, the intelligent mode can be activated when the current ambient temperature is lower than a preset temperature value, such as activating the heating function of the vehicle's air conditioner to raise the interior temperature; the intelligent mode can be activated when the vehicle is currently in motion and the current ambient temperature is lower than the preset temperature value; and the intelligent mode can be deactivated when the vehicle is currently parked.

[0045] For the forced start mode, this is a mandatory start-up mode. Whether to activate or deactivate the forced start mode is determined based on the remaining battery charge, accessory power, maximum battery charging power, and motor power consumption. For example, the forced start mode can be activated when the remaining battery charge is less than or equal to 80% and the total power of the accessories, the maximum allowable battery charging power, and the motor power consumption is greater than or equal to 40kW. Otherwise, the forced start mode is deactivated.

[0046] In pure electric mode, when the power battery has sufficient remaining charge, the range extender is turned off, the electric vehicle enters pure electric mode, and the power battery directly drives the motor to drive the vehicle. The generator does not start and does not participate in power generation.

[0047] By setting corresponding start or stop conditions for different operating modes, the control process of the entire vehicle becomes more intelligent.

[0048] In this embodiment, the current remaining capacity of the power battery is referred to as SOC (state-of-charge), which is expressed as the ratio of remaining capacity to battery capacity, usually as a percentage. Its value ranges from 0 to 1; when SOC = 0, the battery is fully discharged, and when SOC = 1, the battery is fully charged. The current remaining capacity of the power battery cannot be directly measured; it can only be estimated through battery parameters such as battery terminal voltage, charging / discharging current, and internal resistance. Relevant battery parameters can be obtained through the cell monitoring unit (CMU) to estimate the current remaining capacity. Optionally, to improve the accuracy of the currently obtained remaining capacity, the remaining capacity of the power battery over a period of time can be acquired, and the maximum, minimum, median, or average value of the remaining capacity within that period can be taken as the current remaining capacity of the power battery.

[0049] In this embodiment, the battery charge change trend includes an upward trend and a downward trend. An upward trend indicates an increase in the battery charge, while a downward trend indicates a decrease. Due to the hysteresis inherent in the range extender's operation, and to ensure sufficient battery charge, the same remaining battery charge may result in different range extender output power points within the upward and downward trends. Therefore, before determining the range extender's output power corresponding to the current remaining charge, it is necessary to determine the battery charge change trend over a period of time. This allows for the determination of the range extender's preset output power set based on the charge change trend. Specific implementation details will be provided in subsequent embodiments and will not be repeated here.

[0050] Step S120: Based on the remaining power and the power change trend, determine the preset output power from the preset output power set.

[0051] In this embodiment, the battery charge change trend is determined based on the battery charge collected over a period of time. Each charge change trend has a corresponding preset output power set. This preset output power set includes an uplink power set and a downlink power set. When the charge change trend is uplink, the uplink power set is used as the preset output power set for the range extender; when the charge change trend is downlink, the downlink power set is used as the preset output power set for the range extender. Both the uplink and downlink power sets contain multiple preset output powers. The preset output power can be determined from the preset output power set based on the remaining battery charge and the charge change trend.

[0052] Step S130: Determine the power generation of the range extender based on the operating mode and the preset output power.

[0053] In this embodiment, the output power of the range extender varies depending on the remaining battery level and the battery level change trend. Therefore, the battery level change trend can be determined, and then the power output of the range extender corresponding to the remaining battery level can be determined based on this trend. For example, when the battery level change trend is upward, the power output of the range extender corresponding to the current remaining battery level is selected from a preset set of output power values ​​corresponding to upward trends. When the battery level change trend is downward, the power output of the range extender corresponding to the current remaining battery level is selected from a preset set of output power values ​​corresponding to downward trends.

[0054] Optionally, since the power generation of the range extender is determined in different ways under different operating modes, the influence of different operating modes also needs to be considered when determining the power generation of the range extender. The power generation of the range extender is determined according to the operating mode and the preset output power so as to meet the various operating states and corresponding power requirements under different operating modes and improve the fuel economy of the range extender.

[0055] Optionally, to improve the accuracy of the determined power generation of the range extender, a mapping table between each remaining battery charge and the preset output power of the range extender can be established. The set of preset output powers for the range extender can be determined based on the battery charge change trend. A preset output power corresponding to the current remaining battery charge is selected from this set, and then the power generation of the range extender is determined based on the operating mode and the preset output power. This application, through the above method, not only meets the various operating states and corresponding power requirements under different operating modes, but also improves the accuracy of the determined power generation of the range extender, thereby improving the fuel economy of the range extender.

[0056] In one embodiment, when the current vehicle is in intelligent mode, the preset output power can be directly used as the power generation power of the range extender. That is, assuming the preset output power is 100kW, then 100kW can be directly used as the power generation power of the range extender. In intelligent mode, when the power battery charge changes, the power generation power of the range extender can be quickly located, shortening the response time for locating the power generation power of the range extender.

[0057] In one embodiment, when the current vehicle operating mode is forced start mode and the remaining battery power is less than or equal to a first preset battery power, the accessory power, the maximum allowable battery charging power, and the generator power consumption are obtained; the vehicle power is determined based on the accessory power, the maximum allowable battery charging power, and the generator power consumption; and the generator power is determined based on the vehicle power and the preset output power.

[0058] The aforementioned accessory power can be the power of equipment such as air conditioners and fans in the vehicle. The maximum allowable charging power of the battery can be fixed at the factory based on the battery's performance, or it can be adjusted during use based on the actual battery wear. The generator power consumption can be determined by measuring the generator's output current and output voltage. The accessory power, maximum allowable battery charging power, and generator power consumption can be acquired in real time or periodically according to actual needs. The aforementioned preset output power is the output power selected from a preset output power set that corresponds to the remaining charge range of the power battery. The aforementioned vehicle power is the total power of the accessory power, the maximum allowable battery charging power, and the generator power consumption.

[0059] Optionally, when the vehicle is in forced start mode, the remaining charge of the power battery is less than or equal to a first preset charge, and the vehicle power is greater than or equal to a preset vehicle power, it is determined that entering forced start mode to activate the range extender power control strategy is permitted. When it is determined that entering forced start mode to activate the range extender power control strategy is permitted, the power generation of the range extender in forced start mode is determined. Optionally, when the vehicle power is greater than or equal to a preset vehicle power, the maximum power between the preset vehicle power and the preset output power can be determined, and the maximum power can be determined as the power generation of the range extender. The preset vehicle power can be set according to actual conditions; for example, the preset vehicle power can be set to 40kW. For example, when the vehicle is in forced start mode, the remaining charge is ≤80%, and the vehicle power is ≥40kW, and it is determined that entering forced start mode to activate the range extender strategy is permitted, then the larger of the preset vehicle power and the preset output power is determined as the power generation of the range extender. Assuming a preset output power of 50kW, 40kW is determined as the range extender's generating power; assuming a preset output power of 30kW, 50kW is determined as the range extender's generating power. This enables rapid determination of the range extender's generating power in forced start mode, shortening the response time for determining the range extender's generating power.

[0060] Step S140: Control the range extender to output the generated power.

[0061] In this embodiment, after determining the power output of the range extender, the range extender can be controlled to output power, so that the range extender can supplement the electric vehicle with electrical energy.

[0062] Based on the above technical solution, this embodiment can determine the range extender's power generation under different remaining power and power change trends, meet the power requirements of the motor under different working conditions, avoid the problem of low fuel economy of the range extender caused by using a single output power in any working condition, improve the fuel economy of the range extender, and achieve the effect of energy saving.

[0063] Second embodiment.

[0064] like Figure 2 As shown, based on the first embodiment, in the second embodiment of this application, this application proposes a range extender power control method in intelligent mode and forced start mode, including the following steps:

[0065] Step S110: Obtain the current operating mode of the vehicle, the current remaining power of the power battery, and the power change trend;

[0066] Step S121: Determine the power range corresponding to the remaining power, and determine the preset output power set of the range extender based on the power change trend;

[0067] Step S122: Select a preset output power corresponding to the power range from the preset output power set, wherein each power range has a corresponding preset output power;

[0068] In this embodiment, due to the hysteresis in the operation of the range extender, and to ensure the battery's power requirement, the same remaining battery power may result in different range extender output power points depending on the battery's upward and downward trends. Therefore, before determining the output power of the range extender corresponding to the remaining battery power, it is necessary to determine the battery power trend over a period of time. Regardless of whether the battery power trend is downward or upward, the battery power can be pre-divided into multiple power ranges, and a preset output power corresponding to each power range can be determined, thereby generating a mapping table between power ranges and preset output powers. The generated mapping table is shown below:

[0069]

[0070] In this embodiment, the battery charge change trend is determined based on the battery charge collected over a period of time. Each charge change trend has a corresponding preset output power set. This preset output power set includes an uplink power set and a downlink power set. When the charge change trend is uplink, the uplink power set is used as the preset output power set for the range extender; when the charge change trend is downlink, the downlink power set is used as the preset output power set for the range extender. Both the uplink and downlink power sets contain multiple preset output powers. Furthermore, the current remaining charge range can be found in the mapping table determined above, and each charge range has a corresponding preset output power in the preset output power set.

[0071] For example, if the current remaining battery level is 28%, and the current battery level trend is downward, then the determined preset output power set is the downward power set. The current remaining battery level corresponds to a battery range of 25% < SOC ≤ 30%, and the preset output power corresponding to this range, i.e., 100kW, can be selected from the downward power set. Conversely, if the current battery level trend is upward, then the determined preset output power set is the upward power set. The current remaining battery level corresponds to a battery range of 27% ≤ SOC < 32%, and the preset output power corresponding to this range, i.e., 100kW, can be selected from the upward power set.

[0072] Step S130: Determine the power generation of the range extender based on the operating mode and the preset output power.

[0073] Optionally, when the operating mode is intelligent mode, the preset output power is used as the power generation power of the range extender. Optionally, when the operating mode is forced start mode and the remaining battery power is less than or equal to a first preset battery power, the accessory power, the maximum allowable battery charging power, and the generator power consumption are obtained; the vehicle power is determined based on the accessory power, the maximum allowable battery charging power, and the generator power consumption; and the power generation power of the range extender is determined based on the vehicle power and the preset output power.

[0074] Step S140: Control the range extender to output the generated power.

[0075] According to the above technical solution, this embodiment requires determining the battery charge trend over a period of time before determining the output power of the range extender corresponding to the remaining battery charge. Based on this trend, a preset output power set for the range extender is determined. This avoids situations where the same remaining battery charge might result in different output powers due to the hysteresis of the range extender's operation, thus improving the accuracy of the determined output power. Furthermore, when determining the range extender's power generation capacity, the impact of different operating modes must be considered. The power generation capacity is determined based on the operating mode and the preset output power, ensuring that various operating states and corresponding power requirements under different operating modes are met, thereby improving the fuel economy of the range extender.

[0076] Third embodiment.

[0077] Based on the first and second embodiments, in the third embodiment of this application, a range extender power control method in pure electric mode is proposed, including the following steps:

[0078] Step S210: When the working mode is pure electric mode and the remaining power is less than the second preset power, obtain the preset output power corresponding to the range extender in the pure electric mode.

[0079] Step S220: Use the preset output power corresponding to the pure electric mode as the power generation power of the range extender;

[0080] Step S230: Control the range extender to output the power generation in the pure electric mode.

[0081] In this embodiment, when the vehicle is in pure electric mode and the remaining battery power is very low, the range extender strategy is activated in pure electric mode. The preset output power of the range extender in pure electric mode can be fixed in advance or determined based on the remaining battery power. The second preset battery power can be set to 6%. When the operating mode is pure electric mode and the remaining battery power is less than 6%, the range extender strategy is activated in pure electric mode, generating electricity at a preset output power of 120kW. Furthermore, the maximum allowable motor power can be limited to 100kW for output power calculation.

[0082] Optionally, if the vehicle is not in pure electric mode or the remaining battery level is greater than or equal to a third preset battery level, the pure electric mode is exited and the range extender strategy is activated. For example, if the remaining battery level is greater than or equal to 15%, the pure electric mode is exited and the range extender strategy is activated.

[0083] In one embodiment, in pure electric mode, if the remaining charge of the power battery is very low, in order to ensure that the power generated by the range extender can be recharged to the power battery pack, the output power of the generator needs to be limited according to the current power generation of the range extender. When the remaining charge of the power battery is less than a second preset charge level, the maximum allowable output power of the generator can be limited according to the power generation of the range extender. For example, when the remaining charge of the power battery is less than 6%, the low-charge support strategy is determined to be in effect, and the maximum allowable output power of the generator is limited according to the power generation of the range extender.

[0084] Optionally, the maximum permissible output power of the generator may be limited based on the range extender's power generation capacity, including but not limited to:

[0085] (1) When the power generation of the range extender is greater than or equal to the first preset power generation, the maximum allowable output power of the generator is limited to be less than or equal to the first preset output power;

[0086] (2) When the power generation of the range extender is less than the first preset power generation and greater than or equal to the second preset power generation, the maximum allowable output power of the generator is limited to be less than the second preset output power;

[0087] (3) When the power output of the range extender is less than the second preset power output, the maximum allowable output power of the generator is limited to be less than the third preset output power.

[0088] The aforementioned first preset power generation, second preset power generation, first preset output power, second preset output power, and third preset output power can be set according to actual usage. The first preset power generation is greater than the second preset power generation, the first preset output power is greater than the second preset output power, and the second preset output power is greater than the third preset output power.

[0089] For example, the first preset power generation is set to 115KW, the second preset power generation is set to 75KW, the first preset output power is set to 100KW, the second preset output power is set to 70KW, and the third preset output power is set to 30KW.

[0090] Optionally, when the remaining charge of the power battery is greater than or equal to a third preset charge, the low charge support strategy is deemed invalid, and the maximum allowable output power of the generator is not limited.

[0091] This application, based on the aforementioned technical solution, employs a method that, when the operating mode is pure electric mode and the remaining battery power is less than a second preset battery power, obtains the preset output power corresponding to the range extender in pure electric mode; uses the preset output power corresponding to the pure electric mode as the power generation power of the range extender; and controls the range extender to output the power generation power in pure electric mode. This achieves rapid positioning of the range extender's power generation power in pure electric mode, shortening the response time for positioning the range extender's power generation power. Furthermore, in low battery conditions, the maximum allowable output power of the generator is limited based on the range extender's power generation power, allowing the range extender's power generation power to be recharged back into the power battery pack.

[0092] This invention provides an embodiment of a range extender power control method. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here.

[0093] This application discloses a range extender power control device, which includes a memory 1002, a processor 1001, and a range extender power control program stored in the memory 1002 and executable on the processor 1001. When the range extender power control program is executed by the processor 1001, it implements the steps of a range extender power control method.

[0094] The memory 1002 can be used to store software programs and modules. The processor 1001 executes various functional applications and data processing by running the software programs and modules stored in the memory 1002. The memory 1002 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for the functions, etc.; the data storage area may store data created according to the use of the terminal, etc. In addition, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 1002 may also include a memory controller to provide the processor 1001 with access to the memory 1002.

[0095] In this embodiment, when the processor 1001 calls the range extender power control program stored in the memory 1002, it performs the following operations:

[0096] Obtain the current operating mode of the vehicle, the current remaining charge of the power battery, and the charge change trend;

[0097] Based on the remaining power and the power change trend, a preset output power is determined from a preset output power set;

[0098] The power generation capacity of the range extender is determined according to the operating mode and the preset output power.

[0099] Control the range extender to output the generated power.

[0100] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0101] Determine the power range corresponding to the remaining power, and determine the preset output power set of the range extender based on the power change trend;

[0102] Select a preset output power corresponding to the power range from the preset output power set, wherein each power range has a corresponding preset output power.

[0103] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0104] When the operating mode is intelligent mode, the preset output power is used as the power generation power of the range extender.

[0105] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0106] When the working mode is the forced start mode and the remaining power is less than or equal to the first preset power, the accessory power, the maximum allowable charging power of the battery and the power consumed by the generator are obtained.

[0107] The overall vehicle power is determined based on the power of the accessories, the maximum allowable charging power of the battery, and the power consumption of the generator.

[0108] The power generation capacity of the range extender is determined based on the total vehicle power and the preset output power.

[0109] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0110] When the total vehicle power is greater than or equal to the preset total vehicle power, the maximum power among the preset total vehicle power and the preset output power is determined;

[0111] The maximum power is determined as the power output of the range extender.

[0112] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0113] When the operating mode is pure electric mode and the remaining power is less than the second preset power, the preset output power corresponding to the range extender in the pure electric mode is obtained;

[0114] The preset output power corresponding to the pure electric mode is used as the power generation power of the range extender;

[0115] The range extender is controlled to output the generated power in the pure electric mode.

[0116] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0117] When the remaining power is less than the second preset power, the maximum allowable output power of the generator is limited according to the power generation capacity of the range extender.

[0118] When processor 1001 calls the range extender power control program stored in memory 1002, it performs the following operations:

[0119] When the power generation of the range extender is greater than or equal to the first preset power generation, the maximum allowable output power of the generator is limited to be less than or equal to the first preset output power.

[0120] When the power output of the range extender is less than the first preset power output but greater than or equal to the second preset power output, the maximum allowable output power of the generator is limited to be less than the second preset output power.

[0121] When the power output of the range extender is less than the second preset power output, the maximum allowable output power of the generator is limited to be less than the third preset output power, wherein the first preset power output is greater than the second preset power output, the first preset output power is greater than the second preset output power, and the second preset output power is greater than the third preset output power.

[0122] Based on the same inventive concept, this application also provides a computer-readable storage medium storing a range extender power control program. When the range extender power control program is executed by a processor, it implements the various steps of the range extender power control method described above and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0123] Since the storage medium provided in this application embodiment is the storage medium used to implement the method of this application embodiment, those skilled in the art can understand the specific structure and variations of the storage medium based on the method described in this application embodiment, and therefore will not be repeated here. All storage media used in the method of this application embodiment are within the scope of protection of this application.

[0124] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0125] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0126] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, television, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0127] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method of power control for a range extender, the method comprising: The range extender power control method comprises: obtaining a working mode of a whole vehicle, a current residual power of a power battery, and a power change trend; determining a preset output power in a preset output power set based on the residual power and the power change trend; determining a power generation power of a range extender according to the working mode and the preset output power; controlling the range extender to output the power generation power. In the step of determining the power generation power of the range extender according to the working mode and the preset output power, when the working mode is an intelligent mode, the preset output power is taken as the power generation power of the range extender.

2. The range extender power control method of claim 1, wherein, The step of determining the preset output power in the preset output power set based on the residual power and the power change trend comprises: determining a power interval corresponding to the residual power, and determining a preset output power set of the range extender according to the power change trend; selecting a preset output power corresponding to the power interval from the preset output power set, wherein there is a corresponding preset output power for each power interval.

3. The range extender power control method of claim 1 or 2, characterized by, The step of determining the power generation power of the range extender according to the working mode and the preset output power comprises: when the working mode is a strong start mode and the residual power is less than or equal to a first preset power, obtaining an accessory power, a maximum allowable charging power of the battery, and a generator consumption power; determining a whole vehicle power according to the accessory power, the maximum allowable charging power of the battery, and the generator consumption power; determining the power generation power of the range extender according to the whole vehicle power and the preset output power.

4. The range extender power control method of claim 3, wherein, The step of determining the power generation power of the range extender according to the whole vehicle power and the preset output power comprises: when the whole vehicle power is greater than or equal to a preset whole vehicle power, determining a maximum power in the preset whole vehicle power and the preset output power; determining the maximum power as the power generation power of the range extender.

5. The range extender power control method of claim 1, wherein, The range extender power control method comprises: when the working mode is a pure electric mode and the residual power is less than a second preset power, obtaining a preset output power corresponding to the range extender in the pure electric mode; taking the preset output power corresponding to the pure electric mode as the power generation power of the range extender; controlling the range extender to output the power generation power in the pure electric mode.

6. The range extender power control method of claim 5, wherein, The range extender power control method further comprises: when the residual power is less than the second preset power, limiting a maximum allowable output power of a generator according to the power generation power of the range extender.

7. The range extender power control method of claim 6, wherein, The step of limiting the maximum allowable output power of the generator according to the power generation power of the range extender comprises: when the power generation power of the range extender is greater than or equal to a first preset power generation power, limiting the maximum allowable output power of the generator to be less than or equal to a first preset output power; when the power generation power of the range extender is less than the first preset power generation power and greater than or equal to a second preset power generation power, limiting the maximum allowable output power of the generator to be less than a second preset output power; When the power generation of the range extender is less than the second preset power generation, the maximum allowable output power of the generator is less than a third preset output power, wherein the first preset power generation is greater than the second preset power generation, the first preset output power is greater than the second preset output power, and the second preset output power is greater than the third preset output power.

8. A range extender power control device, comprising: The range extender power control device comprises a memory and a processor, the memory stores a range extender power control program executable on the processor, and the range extender power control program, when executed by the processor, implements the steps of the range extender power control method according to any one of claims 1-7.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a range extender power control program, and the range extender power control program, when executed by a processor, implements the steps of the range extender power control method according to any one of claims 1-7.

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