Vehicle range extender control method, device, medium and range extender vehicle

Abstract

The present disclosure relates to a vehicle range extender control method, device, medium and range extender vehicle, comprising: determining a plurality of candidate power generation strategies of a range extender in a future trip of a vehicle; determining energy efficiency contribution information of each candidate power generation strategy, the energy efficiency contribution information being used to represent the relationship between cost and generated energy; determining a target power generation strategy according to the energy efficiency contribution information of each candidate power generation strategy, and controlling the range extender to operate according to the target power generation strategy. By calculating the energy efficiency contribution information of a plurality of candidate power generation strategies of the range extender in the future trip before the start of the future trip, determining the target power generation strategy and controlling the range extender to operate according to the target power generation strategy, the rationality of the control strategy for global optimization of the power generation power of the range extender can be improved, and the use cost of the vehicle can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle control, in particular, to a vehicle range extender control method, device, medium and range extended vehicle. BACKGROUND

[0002] A range extended electric vehicle (referred to as a range extended vehicle) is a vehicle that uses fuel to generate electric energy through a range extender and is driven by electric energy. The range extender is usually composed of an engine and a generator, which can provide electric energy in addition to the power battery, thereby increasing the driving range of the vehicle. In related scenarios, when calculating the power generation of the range extender, the lowest fuel consumption is taken as the target, which is not applicable to range extended electric vehicles with sufficient stored electric energy, and when calculating the power generation of the range extender, the influence of energy efficiency contribution on global control is not considered, thereby resulting in a lower rationality of the global optimization control strategy of the range extender power generation. SUMMARY

[0003] The purpose of the present disclosure is to provide a vehicle range extender control method, device, medium and range extended vehicle, by determining the energy consumption cost and energy efficiency power in the future trip, and then calculating the energy efficiency contribution information, and determining the power generation control strategy of the range extender according to the energy efficiency contribution information, which can improve the rationality of the global optimization control strategy of the range extender power generation and reduce the use cost of the vehicle.

[0004] To achieve the above-mentioned purpose, in a first aspect, the present disclosure provides a vehicle range extender control method, the method comprising:

[0005] determining a plurality of candidate power generation strategies of the range extender in a future trip of the vehicle;

[0006] determining energy efficiency contribution information of each of the candidate power generation strategies, the energy efficiency contribution information being used to represent the relationship between cost and generated energy;

[0007] determining a target power generation strategy according to the energy efficiency contribution information of each of the candidate power generation strategies, and controlling the range extender to operate according to the target power generation strategy.

[0008] Optionally, the determination of the energy efficiency contribution information of each of the candidate power generation strategies comprises:

[0009] determining the energy consumption cost and the energy efficiency power of each of the candidate power generation strategies;

[0010] determining the energy efficiency contribution information of each of the candidate power generation strategies according to the energy consumption cost and the energy efficiency power corresponding to each of the candidate power generation strategies.

[0011] Optionally, the determination of the energy efficiency power of each of the candidate power generation strategies comprises:

[0012] determining a power of the generated thermal energy of the candidate power generation strategy, the power of the generated thermal energy being a power of the thermal energy generated by the engine when the range extender is operated according to the candidate power generation strategy;

[0013] calculating a difference between the power of the generated thermal energy and a power of the air-conditioning heating thermal energy in the future trip;

[0014] determining the power of the generated thermal energy or the power of the air-conditioning heating thermal energy as an effective power of thermal energy according to the difference between the power of the generated thermal energy and the power of the air-conditioning heating thermal energy;

[0015] determining the power efficiency according to the total power of the candidate power generation strategy and the power of the generated thermal energy.

[0016] Optionally, before the determining the power efficiency according to the total power of the candidate power generation strategy and the power of the generated thermal energy, comprising:

[0017] estimating a load demand power and a driving demand power of the future trip, and taking a sum of the load demand power and the driving demand power as a trip consumed power generation;

[0018] when the difference between the total power of the candidate power generation strategy and the trip consumed power generation is less than or equal to 0, the determining the power efficiency according to the total power of the candidate power generation strategy and the power of the generated thermal energy is:

[0019] determining the power efficiency according to the total power of the candidate power generation strategy and the power of the generated thermal energy.

[0020] Optionally, the determining the power efficiency of each of the candidate power generation strategies further comprises:

[0021] estimating a load demand power and a driving demand power of the future trip, and taking a sum of the load demand power and the driving demand power as a trip consumed power generation;

[0022] when the difference between the total power of the candidate power generation strategy and the trip consumed power generation is greater than 0, the determining the power efficiency according to the total power of the candidate power generation strategy and the power of the generated thermal energy is:

[0023] calculating a storage loss power according to a preset power storage conversion efficiency and the difference;

[0024] calculating the power efficiency according to the total power of the candidate power generation strategy, the storage loss power and the effective power of thermal energy.

[0025] Optionally, the determining, according to the energy consumption cost and the energy efficiency power corresponding to each of the candidate power generation strategies, of energy efficiency contribution information of each of the candidate power generation strategies comprises:

[0026] For each of the candidate power generation strategies, a ratio of the energy consumption cost to the energy efficiency power of the candidate power generation strategy is calculated to obtain an energy efficiency contribution value of the candidate power generation strategy, and the energy efficiency contribution information comprises the energy efficiency contribution value.

[0027] Optionally, the candidate power generation strategy comprises a number of power generations in the future trip, a power generation time corresponding to each of the power generations, and a power generation power of each of the power generations.

[0028] Optionally, the number of power generations is determined according to a distance and / or a road condition of the future trip.

[0029] Optionally, the energy consumption cost comprises a fuel cost, and the determining of the energy consumption cost of each of the candidate power generation strategies comprises:

[0030] determining, according to fuel consumption corresponding to a total power generation power of the candidate power generation strategy and a fuel unit price, a fuel cost corresponding to the candidate power generation strategy.

[0031] Optionally, the determining, according to fuel consumption corresponding to a total power generation power of the candidate power generation strategy and a fuel unit price, of a fuel cost corresponding to the candidate power generation strategy comprises:

[0032] integrating a target calculation value of the range extender running in the candidate power generation strategy with respect to time to obtain an integral calculation result of fuel consumption corresponding to a total power generation power of the candidate power generation strategy, wherein the target calculation value is a quotient between a product of power generation power output by the range extender over time and specific fuel consumption of fuel used by the vehicle and a fuel density of the fuel;

[0033] taking a product between the fuel consumption and the fuel unit price as the fuel cost corresponding to the candidate power generation power.

[0034] In a second aspect, the present disclosure provides a vehicle range extender control device, the device comprising:

[0035] a first determining module configured to determine a plurality of candidate power generation strategies of a range extender of a vehicle in a future trip;

[0036] a second determining module configured to determine energy efficiency contribution information of each of the candidate power generation strategies, the energy efficiency contribution information being used to represent a cost-energy relationship;

[0037] The control module is configured to determine a target power generation strategy according to the energy efficiency contribution information of each of the candidate power generation strategies, and control the operation of the range extender according to the target power generation strategy.

[0038] Optionally, the second determining module is configured to:

[0039] determine the energy consumption cost and the energy efficiency power of each of the candidate power generation strategies;

[0040] determine the energy efficiency contribution information of each of the candidate power generation strategies according to the energy consumption cost and the energy efficiency power corresponding to each of the candidate power generation strategies.

[0041] Optionally, the second determining module is configured to:

[0042] determine the power generation thermal power of the candidate power generation strategy, the power generation thermal power being the power of the thermal energy generated by the engine when the range extender operates according to the candidate power generation strategy;

[0043] calculate a thermal power difference between the power generation thermal power and the air conditioning and heating thermal power in the future trip;

[0044] determine the power generation thermal power or the air conditioning and heating thermal power as the effective thermal power according to the thermal power difference;

[0045] determine the energy efficiency power according to the total power generation power of the candidate power generation strategy and the power generation thermal power.

[0046] Optionally, the second determining module is further configured to, before determining the energy efficiency power according to the total power generation power of the candidate power generation strategy and the power generation thermal power, estimate the load demand power and the driving demand power of the future trip, and take the sum of the load demand power and the driving demand power as the trip consumption power generation power; and,

[0047] when the difference between the total power generation power of the candidate power generation strategy and the trip consumption power generation power is less than or equal to 0, the determination of the energy efficiency power according to the total power generation power of the candidate power generation strategy and the power generation thermal power is:

[0048] determine the energy efficiency power according to the total power generation power of the candidate power generation strategy and the power generation thermal power.

[0049] Optionally, the second determining module is further configured to:

[0050] estimate the load demand power and the driving demand power of the future trip, and take the sum of the load demand power and the driving demand power as the trip consumption power generation power.

[0051] determining a difference between the total power generation of the candidate power generation strategy and the travel consumption power generation

[0052] when the difference is greater than 0, determining the energy efficiency power according to at least the total power generation of the candidate power generation strategy and the power generation thermal energy power is:

[0053] calculating a storage loss power according to a preset electric energy storage conversion efficiency and the difference;

[0054] calculating the energy efficiency power according to the total power generation of the candidate power generation strategy, the storage loss power and the effective thermal energy power.

[0055] Optionally, the second determining module is configured to calculate, for each of the candidate power generation strategies, a ratio of the energy consumption cost of the candidate power generation strategy to the energy efficiency power, to obtain an energy efficiency contribution value of the candidate power generation strategy, and the energy efficiency contribution information includes the energy efficiency contribution value.

[0056] Optionally, the candidate power generation strategy includes a number of power generations in the future travel, a power generation duration corresponding to each of the power generations, and a power generation power of each of the power generations.

[0057] Optionally, the number of power generations is determined according to a distance and / or a road condition of the future travel.

[0058] Optionally, the energy consumption cost includes a fuel cost, and the second determining module is configured to determine the fuel cost corresponding to the candidate power generation strategy according to a fuel consumption corresponding to the total power generation of the candidate power generation strategy and a fuel unit price.

[0059] Optionally, the second determining module is configured to integrate a target calculation value of the range extender when the range extender is operated in the candidate power generation strategy with respect to time, and an integration calculation result obtained by the integration is a fuel consumption corresponding to the total power generation of the candidate power generation strategy, wherein the target calculation value is a quotient between a product of a power generation power output by the range extender over time and a specific fuel consumption of fuel used by the vehicle, and a fuel density of the fuel.

[0060] The product between the fuel consumption and the fuel unit price is taken as the fuel cost corresponding to the candidate power generation power.

[0061] In a third aspect, the present disclosure provides a computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the steps of the method of any one of the first aspect.

[0062] In a fourth aspect, the present disclosure provides a range-extended vehicle, comprising a controller, the controller comprising a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method in any one of the first aspect.

[0063] By the above technical solution, by calculating the energy efficiency contribution information of the plurality of candidate power generation strategies of the range extender in the future trip before the start of the future trip, determining the target power generation strategy and controlling the range extender to operate according to the target power generation strategy, the rationality of the control strategy of the global optimization of the power generation power of the range extender can be improved, and the use cost of the vehicle is reduced.

[0064] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0065] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0066] Figure 1 is a flowchart of a vehicle range extender control method according to an exemplary embodiment;

[0067] Figure 2 is a flowchart of a method for implementing Figure 1 step S12 according to an exemplary embodiment;

[0068] Figure 3 is a flowchart of a method for implementing Figure 2 step S121 according to an exemplary embodiment;

[0069] Figure 4 is a block diagram of a vehicle range extender control device according to an exemplary embodiment;

[0070] Figure 5 is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0071] The exemplary embodiments will be described in detail hereinafter with reference to the attached drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0072] And, it is worth mentioning that, for the method embodiments provided by the present disclosure, in order to simply describe, they are all expressed as a combination of a series of actions, but those skilled in the art should know that the present disclosure is not limited by the order of the described actions. Secondly, those skilled in the art should know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the present disclosure.

[0073] Figure 1 is a flow chart of a vehicle range extender control method according to an exemplary embodiment, which can be applied to a range extender controller or a vehicle control unit (VCU), with reference to Figure 1 , the method comprises the following steps:

[0074] In step S11, a plurality of candidate power generation strategies of the range extender in the future journey of the vehicle are determined.

[0075] In a specific implementation scenario, the future journey can be obtained through navigation information, and a plurality of candidate power generation strategies of the range extender in the future journey of the vehicle can be determined according to road condition information in the future journey, such as slope information, driving speed information, and light use information.

[0076] For example, a plurality of candidate power generation strategies of the range extender in the future journey can be determined based on an optimization algorithm, and a plurality of candidate power generation strategies corresponding to the future journey can be determined from a plurality of preset range extender power generation strategies through an optimization algorithm such as hill climbing, simulated annealing, and genetic algorithm. In this way, a plurality of candidate power generation strategies can be selected from a large number of range extender power generation strategies, the calculation amount can be reduced, and the calculation efficiency can be improved.

[0077] In step S12, energy efficiency contribution information of each of the candidate power generation strategies is determined, and the energy efficiency contribution information is used to represent the relationship between cost and generated energy.

[0078] On the basis of the above embodiments, Figure 2 is a flow chart for implementing Figure 1 step S12, in step S12, the following steps are included.

[0079] In step S121, the energy consumption cost and the energy efficiency power generated by each of the candidate power generation strategies are determined.

[0080] The energy consumption cost is used to represent the cost corresponding to the energy consumption of the candidate power generation strategy, and the energy efficiency power is used to represent the power that can be actually provided to the vehicle under the condition of consuming the corresponding energy.

[0081] In an implementation manner, referring to Figure 3As shown, in step S121, determining the energy efficiency power generated by each of the candidate power generation strategies comprises the following steps:

[0082] In step S1211, determining the power generation thermal energy power of the candidate power generation strategy, the power generation thermal energy power being the power of the thermal energy generated by the engine when the range extender is operated according to the candidate power generation strategy.

[0083] The power generation thermal energy power refers to the thermal energy power that the range extender can provide to the heating air pipe, and needs to be subtracted from the original thermal energy power generated by the engine on the basis of the thermal energy power dissipated by the engine itself and the pipe.

[0084] In step S1212, calculating the thermal energy power difference between the power generation thermal energy power and the air conditioning heating thermal energy power in the future trip.

[0085] The air conditioning heating thermal energy power refers to the thermal energy power required by the air conditioning heating air pipe in the case that the air conditioning is in the heating mode. The air conditioning heating thermal energy power can be estimated according to the environmental temperature information and the season information in the future trip.

[0086] In step S1213, determining the power generation thermal energy power or the air conditioning heating thermal energy power as the effective thermal energy power according to the thermal energy power difference.

[0087] In the case that the thermal energy power difference is less than or equal to 0, it is indicated that the power of the thermal energy generated by the engine when the range extender is operated according to the candidate power generation strategy cannot meet the air conditioning heating demand, and the air conditioning compressor needs to be heated based on the power provided by the generator and / or the power provided by the battery pack. The thermal energy power corresponding to the thermal energy power difference is provided, and the power generation thermal energy power is determined as the effective thermal energy power.

[0088] In the case that the thermal energy power difference is greater than 0, it is indicated that the power of the thermal energy generated by the engine when the range extender is operated according to the candidate power generation strategy is greater than the air conditioning heating demand, and the air conditioning heating thermal energy power is determined as the effective thermal energy power. The thermal energy power corresponding to the thermal energy power difference will be dissipated to the air through the cooling method such as cooling liquid.

[0089] In step S1214, determining the energy efficiency power according to at least the total power generation power of the candidate power generation strategy and the power generation thermal energy power.

[0090] The total power generation power is calculated according to the number of power generations in the future trip, the power generation time corresponding to each power generation, and the power generation power of each time.

[0091] In specific implementation, the sum of the total power generation power and the power generation thermal energy power is determined as the energy efficiency power.

[0092] The above technical solution not only fully considers the energy efficiency power that the power generation power can bring, but also considers the actual utilization power of the heat energy power generated by the engine, so that the rationality of calculating the energy efficiency power is improved, the rationality of determining the control strategy of the power increaser power generation power global optimization is improved, and the use cost of the vehicle is reduced.

[0093] On the basis of the above embodiment, before step S1214, the load demand power and the drive demand power of the future trip are estimated, and the sum of the load demand power and the drive demand power is taken as the trip consumption power generation power.

[0094] The load demand power refers to the power generation power required to be provided to the load such as lamps, air conditioner compressors and the like for normal operation of the load during the power generation process of the power increaser. The drive demand power refers to the power generation power required to be provided to the drive motor for driving the vehicle to travel during the power generation process. The trip consumption power generation power represents the whole vehicle power consumed by the load and the drive motor jointly provided by the generator and the battery pack during the power generation process of the power increaser.

[0095] When the difference between the total power generation power of the candidate power generation strategy and the trip consumption power generation power is less than or equal to 0, the energy efficiency power is determined according to at least the total power generation power of the candidate power generation strategy and the power generation heat energy power.

[0096] The energy efficiency power is determined according to the total power generation power of the candidate power generation strategy and the power generation heat energy power.

[0097] In the case where the difference between the electric energy power is less than or equal to 0, it is indicated that the power generation power of the power increaser cannot meet the whole vehicle power, and the battery pack also needs to provide power to the load and / or the drive motor while the power increaser is running. That is, in this case, the power generation power of the power increaser is all used to provide power to the load and / or the drive motor, and no power generation power is stored in the battery pack.

[0098] On the basis of the above embodiment, before step S1214, the load demand power and the drive demand power of the future trip are estimated, and the sum of the load demand power and the drive demand power is taken as the trip consumption power generation power.

[0099] When the difference between the total power generation power of the candidate power generation strategy and the trip consumption power generation power is greater than 0, the energy efficiency power is determined according to at least the total power generation power of the candidate power generation strategy and the power generation heat energy power.

[0100] According to the preset electric energy storage conversion efficiency and the difference, the storage loss power is calculated.

[0101] The energy efficiency power is calculated according to the total power generation, the storage loss power and the effective thermal energy power of the candidate power generation strategy.

[0102] When the electric energy power difference is greater than 0, it indicates that the power generation of the range extender can not only meet the power of the whole vehicle, but also provide charging power to the battery pack while the range extender is running, and the electric energy power difference is the power generation of the charging power provided to the battery pack.

[0103] The storage loss power is the consumption power in the process of converting electric energy into chemical energy storage and then converting chemical energy into electric energy, which can be calculated by the product of the difference between the preset electric energy storage conversion efficiency and 1 and the storage power generation. The preset electric energy storage conversion efficiency can be 0.95. That is: storage loss power = (electric energy storage conversion efficiency-1)*(total power generation-travel consumption power generation).

[0104] Wherein, the sum of the power generation and the corresponding effective thermal energy power of each power generation is integrated to obtain the first integral sum of the total power generation and the effective thermal energy power, the second integral sum of the power generation rate and the travel consumption power generation is calculated, and the integral sum difference between the first integral sum and the second integral sum is taken as the energy efficiency power. That is:

[0105] Energy efficiency power = ∫(range extender power generation

[0106] +min(air conditioning heating thermal energy power, power generation thermal energy power))dt

[0107] +(electric energy storage conversion efficiency-1)

[0108] *max(0,∫(range extender power generation-travel consumption power generation)dt)

[0109] Wherein, the units of the range extender power generation, the air conditioning heating thermal energy power and the travel consumption power generation are all kilowatts.

[0110] By adopting the above technical solution, the influence of energy conversion loss on energy efficiency power calculation is considered in the power generation process if there is storage power generation, and the rationality of calculating energy efficiency power is further improved, and the rationality of determining the control strategy of global optimization of range extender power generation is further improved, and the use cost of the vehicle is further reduced.

[0111] In step S122, the energy efficiency contribution information of each candidate power generation strategy is determined according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy.

[0112] Specifically, a quotient of the energy efficiency power and the energy consumption cost is determined as an energy efficiency contribution information value of the candidate power generation strategy, and the energy efficiency contribution information includes the energy efficiency contribution information value.

[0113] On the basis of the above-mentioned embodiments, the energy consumption cost includes fuel cost, and in step S121, the energy consumption cost of each candidate power generation strategy is determined, including:

[0114] According to the fuel consumption corresponding to the total power generation of the candidate power generation strategy and the unit price of fuel, the fuel cost corresponding to the candidate power generation strategy is determined.

[0115] Wherein, the integral calculation result obtained by integrating the target calculation value of the range extender when the range extender is operated in the candidate power generation strategy with respect to time is the fuel consumption corresponding to the total power generation of the candidate power generation strategy, wherein the target calculation value is the quotient between the product of the power generation output by the range extender over time and the specific fuel consumption of the fuel used by the vehicle and the fuel density of the fuel;

[0116] The product of the fuel consumption and the unit price of fuel is taken as the fuel cost corresponding to the candidate power generation power. That is:

[0117]

[0118] Wherein, the specific fuel consumption, i.e. fuel consumption rate, refers to the fuel mass (in g) consumed by the engine per 1kw of effective power output in 1h. Different fuels have different fuel densities, and the fuel density also changes slightly with seasons and climate. The smaller the fuel specific gravity, the smaller the fuel density.

[0119] Then in step S122, the energy efficiency contribution information of each candidate power generation strategy is determined according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy, including: the energy efficiency contribution information value is determined according to the quotient of the energy efficiency power and the fuel cost corresponding to each candidate power generation strategy. That is: energy efficiency contribution information value = energy efficiency power / fuel cost.

[0120] In an embodiment, the energy consumption cost further includes charging cost, and the determination of the energy consumption cost generated by each candidate power generation strategy further includes:

[0121] According to the maximum additional power generation amount that the range extender can provide for the vehicle when the range extender is operated at the maximum power generation, and the total additional power generation amount that the range extender can provide for the vehicle when the range extender is operated according to each candidate power generation strategy, the required charging amount corresponding to each candidate power generation strategy is determined;

[0122] The charging cost is determined according to the required charging amount and the unit price of electricity.

[0123] In step S122, the energy efficiency contribution information of each candidate power generation strategy is determined according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy, including: determining the energy efficiency contribution value of each candidate power generation strategy according to the sum of the charging cost and the fuel cost corresponding to each candidate power generation strategy, and according to the quotient of the energy efficiency power and the sum of the cost.

[0124] In the case where the range extender does not store power when running in the candidate power generation strategy, the total amount of additional power generation is the amount of power generation obtained by integrating the power generation of the range extender when running in the candidate power generation strategy with respect to time.

[0125] In the case where the range extender stores power when running in the candidate power generation strategy, the additional power generation is the difference between the amount of power generation obtained by integrating the power generation of the range extender when running in the candidate power generation strategy with respect to time and the amount of power generation that can be provided by the stored power.

[0126] In the case where the range extender does not store power when running in the candidate power generation strategy, the total amount of additional power generation is the amount of power generation obtained by integrating the power generation of the range extender when running in the candidate power generation strategy with respect to time.

[0127]

[0128] The charging efficiency is related to the charging interface and the size of the charging current. For example, the charging efficiency is affected by the fast and slow charging interfaces, such as charging efficiency = 0.95.

[0129] It can be understood that the difference between the maximum additional power generation and the stored power corresponding to each power generation of the range extender is the required charging amount. The maximum additional power generation can be 5 kW.

[0130] In step S13, the target power generation strategy is determined according to the energy efficiency contribution information of each candidate power generation strategy, and the range extender is controlled to run according to the target power generation strategy.

[0131] Specifically, the candidate power generation strategy with the maximum energy efficiency contribution value is determined as the target power generation strategy.

[0132] By calculating the energy efficiency contribution information of multiple candidate power generation strategies of the range extender in the future trip before the trip starts, determining the target power generation strategy and controlling the range extender to run according to the target power generation strategy, the rationality of the control strategy for global optimization of the power generation of the range extender can be improved, and the use cost of the vehicle can be reduced.

[0133] On the basis of the above embodiment, the candidate power generation strategy includes the number of power generations in the future trip, the power generation time corresponding to each power generation, and the power generation power of each power generation.

[0134] On the basis of the above-mentioned embodiments, the number of power generation is determined according to the distance and / or road condition of the future trip. The road condition can include slope and energy recovery condition of the corresponding slope.

[0135] Based on the same inventive concept, the disclosure also provides a vehicle range extender control device, which can implement all or part of the steps of the vehicle range extender control method in the form of software, hardware or a combination of both. Figure 4 is a block diagram of a vehicle range extender control device 100 according to an exemplary embodiment, as shown in Figure 4 The device 100 includes a first determination module 110, a second determination module 120 and a control module 130.

[0136] The first determination module 110 is configured to determine a plurality of candidate power generation strategies of the range extender in the future trip of the vehicle.

[0137] The second determination module 120 is configured to determine energy efficiency contribution information of each of the candidate power generation strategies, the energy efficiency contribution information being used to represent the relationship between cost and generated energy.

[0138] The control module 130 is configured to determine a target power generation strategy according to the energy efficiency contribution information of each of the candidate power generation strategies, and control the range extender to operate according to the target power generation strategy.

[0139] The above-mentioned device can improve the rationality of the control strategy for global optimization of the power generation of the range extender, and reduce the use cost of the vehicle, by calculating the energy efficiency contribution information of a plurality of candidate power generation strategies of the range extender in the future trip before the start of the future trip, determining a target power generation strategy and controlling the range extender to operate according to the target power generation strategy.

[0140] Optionally, the second determination module 120 is configured to:

[0141] determine the energy consumption cost and energy efficiency power of each of the candidate power generation strategies;

[0142] determine the energy efficiency contribution information of each of the candidate power generation strategies according to the energy consumption cost and energy efficiency power corresponding to each of the candidate power generation strategies.

[0143] Optionally, the second determination module 120 is configured to:

[0144] determine the power generation thermal energy power of the candidate power generation strategy, the power generation thermal energy power being the power of the thermal energy generated by the engine when the range extender operates according to the candidate power generation strategy;

[0145] calculating a thermal power difference between the power of the generated thermal energy and the power of the air-conditioning heating thermal energy in the future trip;

[0146] determining the power of the generated thermal energy or the power of the air-conditioning heating thermal energy as the effective thermal power according to the thermal power difference;

[0147] determining the energy efficiency power according to at least the total power of the generated energy of the candidate power generation strategy and the power of the generated thermal energy.

[0148] Optionally, the second determining module 120 is further configured to: before determining the energy efficiency power according to at least the total power of the generated energy of the candidate power generation strategy and the power of the generated thermal energy, estimate a load demand power and a driving demand power of the future trip, and take a sum of the load demand power and the driving demand power as a trip consumption power generation power; and,

[0149] when the difference between the total power of the generated energy of the candidate power generation strategy and the trip consumption power generation power is less than or equal to 0, determining the energy efficiency power according to at least the total power of the generated energy of the candidate power generation strategy and the power of the generated thermal energy is:

[0150] determining the energy efficiency power according to the total power of the generated energy of the candidate power generation strategy and the power of the generated thermal energy.

[0151] Optionally, the second determining module 120 is further configured to:

[0152] estimate a load demand power and a driving demand power of the future trip, and take a sum of the load demand power and the driving demand power as a trip consumption power generation power;

[0153] when the difference between the total power of the generated energy of the candidate power generation strategy and the trip consumption power generation power is greater than 0, determining the energy efficiency power according to at least the total power of the generated energy of the candidate power generation strategy and the power of the generated thermal energy is:

[0154] calculating a storage loss power according to a preset power storage conversion efficiency and the difference;

[0155] calculating the energy efficiency power according to the total power of the generated energy of the candidate power generation strategy, the storage loss power and the effective thermal power.

[0156] Optionally, the second determining module 120 is configured to calculate, for each candidate power generation strategy, a ratio of the energy consumption cost of the candidate power generation strategy to the energy efficiency power, to obtain an energy efficiency contribution value of the candidate power generation strategy, and the energy efficiency contribution information includes the energy efficiency contribution value.

[0157] Optionally, the candidate power generation strategy comprises a number of power generations in the future trip, a power generation duration corresponding to each of the power generations, and a power generation power of each of the power generations.

[0158] Optionally, the number of power generations is determined according to a distance and / or a road condition of the future trip.

[0159] Optionally, the energy consumption cost comprises a fuel cost, and the second determining module is configured to determine the fuel cost corresponding to the candidate power generation strategy according to a fuel consumption corresponding to a total power generation power of the candidate power generation strategy and a fuel unit price.

[0160] Optionally, the second determining module 120 is configured to integrate a target calculation value of the range extender when the range extender is operated according to the candidate power generation strategy with respect to time, and an integral calculation result is a fuel consumption corresponding to a total power generation power of the candidate power generation strategy, wherein the target calculation value is a quotient between a product of a power generation power output by the range extender over time and a specific fuel consumption of fuel adopted by the vehicle and a fuel density of the fuel.

[0161] A product between the fuel consumption and the fuel unit price is taken as the fuel cost corresponding to the candidate power generation power.

[0162] As to the apparatus in the above-mentioned embodiments, the specific manners in which various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0163] In addition, it is worth noting that the modules in the above-mentioned embodiments can be independent devices or the same device in specific implementation, for example, the second determining module 120 and the control module 130 can be the same module or two modules, and the present disclosure does not limit this.

[0164] The present disclosure also provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the method of any one of the above-mentioned methods.

[0165] The present disclosure also provides a controller comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method of any one of the above-mentioned methods when executing the computer program.

[0166] The present disclosure also provides a range extended vehicle comprising the above-mentioned controller.

[0167] Figure 5 is a block diagram of an electronic device 700 according to an exemplary embodiment. The electronic device can be configured as a controller, such as Figure 5As shown, the electronic device 700 can include a processor 701, a memory 702. The electronic device 700 can further include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0168] The processor 701 is configured to control overall operations of the electronic device 700 to complete all or part of the steps of the vehicle range extender control method described above.

[0169] The memory 702 is configured to store various types of data to support operations of the electronic device 700, which can include, for example, instructions for operating any application or method on the electronic device 700, and application-related data, such as future trip information, navigation information, and the like. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic storage, a flash memory, a magnetic disk, or an optical disk.

[0170] The multimedia component 703 can include a screen and an audio component. The screen can be, for example, a touch screen, and the audio component is configured to output and / or input audio signals. For example, the audio component can include a microphone configured to receive external audio signals. The received audio signals can be further stored in the memory 702 or transmitted through the communication component 705. The audio component further includes at least one speaker configured to output audio signals.

[0171] The I / O interface 704 provides an interface between the processor 701 and other interface modules, which can be a keyboard, a mouse, a button, and the like. The buttons can be virtual buttons or physical buttons.

[0172] The communication component 705 is configured to perform wired or wireless communication between the electronic device 700 and other devices. The wireless communication, for example, Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or one or more combinations thereof, is not limited herein. Accordingly, the communication component 705 can include a Wi-Fi module, a Bluetooth module, an NFC module, etc.

[0173] In an exemplary embodiment, the electronic device 700 can be implemented by one or more Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor, or other electronic elements, for performing the vehicle range extender control method described above.

[0174] In another exemplary embodiment, a computer readable storage medium including program instructions is also provided, which, when executed by a processor, implements the steps of the vehicle range extender control method described above. For example, the computer readable storage medium can be the memory 702 described above including program instructions, which can be executed by the processor 701 of the electronic device 700 to complete the vehicle range extender control method described above.

[0175] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0176] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0177] In addition, any combination of various different embodiments of the present disclosure can also be made, as long as it does not deviate from the idea of the present disclosure, and it should also be considered as disclosed in the present disclosure.

Claims

1. A vehicle range extender control method, characterized by, The method comprises: determining, according to road condition information in a future trip, a plurality of candidate power generation strategies of a range extender in the future trip from preset power generation strategies of the range extender, wherein the road condition information comprises at least one of slope information, driving speed information and light use information, and the candidate power generation strategies comprise power generation times in the future trip, power generation time lengths corresponding to each power generation and power generation power of each time; determining energy efficiency contribution information of each candidate power generation strategy, the energy efficiency contribution information being used to represent a relationship between cost and generated energy; determining a target power generation strategy according to the energy efficiency contribution information of each candidate power generation strategy, and controlling the range extender to operate according to the target power generation strategy.

2. The method of claim 1, wherein, The determination of the energy efficiency contribution information of each candidate power generation strategy comprises: determining energy consumption cost and energy efficiency power of each candidate power generation strategy; determining the energy efficiency contribution information of each candidate power generation strategy according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy.

3. The method of claim 2, wherein, The determination of the energy efficiency power of each candidate power generation strategy comprises: determining power generation thermal power of the candidate power generation strategy, the power generation thermal power being power of thermal energy generated by an engine when the range extender operates according to the candidate power generation strategy; calculating a thermal power difference between the power generation thermal power and air conditioner heating thermal power in the future trip; determining the power generation thermal power or the air conditioner heating thermal power as effective thermal power according to the thermal power difference; determining the energy efficiency power according to at least the total power generation power of the candidate power generation strategy and the power generation thermal power.

4. The method of claim 3, wherein, Before the determination of the energy efficiency power according to at least the total power generation power of the candidate power generation strategy and the power generation thermal power, the method comprises: estimating load demand power and driving demand power of the future trip, and taking a sum of the load demand power and the driving demand power as trip consumption power generation power; when a difference between the total power generation power of the candidate power generation strategy and the trip consumption power generation power is less than or equal to 0, determining that the energy efficiency power is determined according to the total power generation power of the candidate power generation strategy and the power generation thermal power. The determination of the energy efficiency power of each candidate power generation strategy further comprises:

5. The method of claim 3, wherein, estimating load demand power and driving demand power of the future trip, and taking a sum of the load demand power and the driving demand power as trip consumption power generation power; when the difference between the total power generation power of the candidate power generation strategy and the trip consumption power generation power is greater than 0, determining that the energy efficiency power is determined according to a preset electric energy storage conversion efficiency and the difference; calculating storage loss power according to the total power generation power of the candidate power generation strategy, the storage loss power and the effective thermal power; and calculating the energy efficiency power according to the total power generation power of the candidate power generation strategy, the storage loss power and the effective thermal power. ​ 6. The method according to any one of claims 2-5, characterized in that, The energy efficiency contribution information of each candidate power generation strategy is determined according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy, and the energy efficiency contribution information includes: For each candidate power generation strategy, a ratio of the energy consumption cost to the energy efficiency power of the candidate power generation strategy is calculated to obtain an energy efficiency contribution value of the candidate power generation strategy, and the energy efficiency contribution information includes the energy efficiency contribution value.

7. The method of claim 1, wherein, The power generation frequency is determined according to the distance and / or road condition of the future trip.

8. The method of claim 2, wherein, The energy consumption cost includes fuel cost, and the energy consumption cost of each candidate power generation strategy is determined by: determining the fuel cost corresponding to the candidate power generation strategy according to the fuel consumption corresponding to the total power generation power of the candidate power generation strategy and the unit price of fuel.

9. The method of claim 8, wherein, The fuel cost corresponding to the candidate power generation strategy is determined according to the fuel consumption corresponding to the total power generation power of the candidate power generation strategy and the unit price of fuel, and the method includes: integrating a target calculation value of the range extender running in the candidate power generation strategy with respect to time to obtain an integral calculation result of the fuel consumption corresponding to the total power generation power of the candidate power generation strategy, wherein the target calculation value is a quotient of a product of the power generation power output by the range extender over time and the specific fuel consumption of the fuel used by the vehicle and a quotient of the fuel density of the fuel; the fuel cost corresponding to the candidate power generation strategy is determined by multiplying the fuel consumption by the unit price of fuel.

10. A vehicle range extender control device characterized by comprising: The device includes: A first determination module configured to determine, from preset range extender power generation strategies, a plurality of candidate power generation strategies of a range extender of a vehicle in a future trip according to road condition information in the future trip, wherein the road condition information includes at least one of the following: slope information, driving speed information, and light usage information, and the candidate power generation strategies include power generation frequencies in the future trip, power generation time lengths corresponding to each power generation, and power generation power of each power generation; A second determination module configured to determine energy efficiency contribution information of each candidate power generation strategy, wherein the energy efficiency contribution information is used to represent a cost-energy relationship; A control module configured to determine a target power generation strategy according to the energy efficiency contribution information of each candidate power generation strategy, and control the range extender to run according to the target power generation strategy.

11. The apparatus of claim 10, wherein, The second determination module is configured to: determine energy consumption cost and energy efficiency power of each candidate power generation strategy; determine energy efficiency contribution information of each candidate power generation strategy according to the energy consumption cost and the energy efficiency power corresponding to each candidate power generation strategy.

12. The apparatus of claim 11, wherein, The second determination module is configured to: determine power generation thermal power of the candidate power generation strategy, wherein the power generation thermal power is a power of thermal energy generated by an engine when the range extender runs according to the candidate power generation strategy; calculate a thermal power difference between the power generation thermal power and air conditioning heating thermal power in the future trip; determine the power generation thermal power or the air conditioning heating thermal power as effective thermal power according to the thermal power difference; determine the energy efficiency power according to at least the total power generation power of the candidate power generation strategy and the power generation thermal power.

13. A computer readable storage medium having stored thereon a computer program, characterized in that The computer program, which is executed by a processor, implements the steps of the method according to any one of claims 1 to 9.

14. A range extended vehicle characterized by, A controller comprising a memory and a processor, the memory having stored therein a computer program, wherein the processor, when executing the computer program, implements the steps of the method according to any one of claims 1 to 9.

Images