Vehicle range extender control method, system and vehicle terminal

Abstract

The present application relates to the field of range extender control technology and discloses a vehicle range extender control method, system, and vehicle terminal. The present application sets a first control mode for determining a first node from high-efficiency power nodes and a second control mode for determining a second node from range extender power nodes, with maximizing the duration of the first control mode within a preset time period as a strategy formulation goal. A control strategy that meets the target power generation is formulated based on the first control mode and the second control mode, thereby obtaining a target node according to the control strategy and controlling the range extender of a target vehicle to generate power through the target node, so that the vehicle range extender is in the high-efficiency range to the maximum extent possible, thereby improving the power generation efficiency of the range extender.

Description

Technical Field

[0001] The present invention relates to the field of range extender control technology, and in particular to a vehicle range extender control method, system and vehicle terminal. Background Art

[0002] In recent years, the electric vehicle industry has experienced rapid development, with more and more consumers tending to choose electric vehicles, among which extended-range electric vehicles are particularly popular. Extended-range vehicles cleverly combine the environmental characteristics of pure electric vehicles with the endurance advantages of fuel vehicles. Through the built-in range extender, thermal energy is efficiently converted into electrical energy, which in turn drives the motor to work. In this way, it not only retains the driving experience of electric vehicles, but also effectively alleviates the range anxiety problem commonly faced by pure electric vehicles.

[0003] Currently, in current extended-range electric vehicle technology, the range extender's power generation is not determined by a single factor, but is affected by both the range extender's speed and torque. Even at the same power generation, the range extender's power generation efficiency can vary significantly due to different combinations of speed and torque. However, current control strategies for range extenders are mostly simple, primarily adjusting based on vehicle speed, meaning that power generation efficiency increases accordingly as vehicle speed increases. This control method ignores whether the range extender's speed and torque are within its high-efficiency power generation range, thereby limiting the optimization of the vehicle's overall power generation efficiency and resulting in low energy utilization efficiency. Summary of the Invention

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a vehicle range extender control method, system and vehicle terminal to improve the power generation efficiency of the range extender.

[0006] The present application provides a vehicle range extender control method, comprising: pre-setting a first control mode and a second control mode, the first control mode comprising determining a first node from a high-efficiency power node, and the second control mode comprising determining a second node from a range extender power node, wherein the range extender power node is determined based on the range extender torque and / or the range extender speed, and the high-efficiency power node is a part of the range extender power node; obtaining a target power generation power corresponding to a target vehicle in a preset time period; taking maximizing the duration proportion of the first control mode in the preset time period as a strategy formulation target, formulating a control strategy that meets the target power generation power according to the first control mode and the second control mode; determining a target node according to the control strategy, so as to control the range extender of the target vehicle to generate electricity according to the target node, wherein the target node includes the first node and / or the second node.

[0007] In one embodiment of the present application, the target power generation corresponding to the target vehicle in the preset time period is obtained in the following manner: the current remaining power of the target vehicle is obtained, and the average energy consumption of the vehicle corresponding to the preset time period of the target vehicle is obtained; the preset target power is calculated based on the current remaining power to obtain the power required by the battery, and the time period length corresponding to the preset time period is calculated based on the average energy consumption of the vehicle to obtain the power required for driving, so as to determine the target power generation based on the battery required power and the power required for driving; the target power generation is calculated based on the time period length to obtain the target power generation.

[0008] In one embodiment of the present application, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and a control strategy that meets the target power generation is formulated based on the first control mode and the second control mode, including: if the target vehicle meets the first preset condition, maximizing the duration of the first control mode within the preset time period is used as a strategy formulation goal, and a control strategy that meets the target power generation is formulated based on the first control mode and the second control mode, wherein the high-speed state includes a real-time vehicle speed greater than or equal to a preset first vehicle speed threshold; if the target vehicle is in a low-speed state, a control strategy is formulated based on the second control mode, wherein the low-speed state includes a real-time vehicle speed less than the first vehicle speed threshold.

[0009] In one embodiment of the present application, if the control strategy only includes the first control mode, the target node is determined according to the control strategy, including: if the target vehicle meets the first preset condition, controlling the target vehicle to enter the first control mode in the control strategy; if the target vehicle is in a low-speed state, controlling the target vehicle to enter the second control mode.

[0010] In one embodiment of the present application, if the control strategy includes a first control mode and a second control mode, determining the target node according to the control strategy includes: in response to a first preset condition or a second preset condition, controlling the target vehicle to enter the first control mode in the control strategy, and counting the mode duration of the first control mode, wherein the first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets a preset duration threshold, and the second preset condition includes that the mode duration of the second control mode meets the duration ratio of the second control mode within a preset time period; in response to a third preset condition or a fourth preset condition, controlling the target vehicle to enter the second control mode in the control strategy, and counting the mode duration of the second control mode, wherein the third preset condition includes that the real-time vehicle speed is less than a preset second vehicle speed threshold, and the second vehicle speed threshold is less than or equal to the first vehicle speed threshold, and the fourth preset condition includes that the mode duration of the first control mode meets the duration ratio of the first control mode within a preset time period.

[0011] In one embodiment of the present application, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and formulating a control strategy that meets the target power generation power according to the first control mode and the second control mode, including: obtaining an expected vehicle speed corresponding to the preset time period; matching each of the range extender power nodes according to the expected vehicle speed and the target power generation to obtain a first reference node, wherein the first reference node is positively correlated with the expected vehicle speed and the target power generation; if the first reference node is less than or equal to the target power generation, formulating a control strategy according to the second control mode; if the first reference node is greater than the target power generation, matching each of the high-efficiency power nodes according to the expected vehicle speed and the target power generation to obtain a second reference node, wherein the second reference node is positively correlated with the expected vehicle speed and the target power generation; if the second reference node is less than or equal to the target power generation, maximizing the duration of the first control mode within the preset time period is used as the strategy formulation goal, and formulating a control strategy according to the first control mode and the second control mode; if the second reference node is greater than the target power generation, formulating a control strategy according to the first control mode.

[0012] In one embodiment of the present application, the method also includes at least one of the following: calculating the expected power generation according to the first reference node to obtain a first power generation duration, wherein if the first power generation duration is greater than or equal to the time period length, it is judged that the first reference node is less than or equal to the target power generation power, and if the first power generation duration is less than the time period length, it is judged that the first reference node is greater than the target power generation power; calculating the expected power generation according to the second reference node to obtain a second power generation duration, wherein if the second power generation duration is greater than or equal to the time period length, it is judged that the second reference node is less than or equal to the target power generation power, and if the second power generation duration is less than the time period length, it is judged that the second reference node is greater than the target power generation power.

[0013] In one embodiment of the present application, the target node is determined according to the control strategy, including: the first control mode includes matching from the high-efficiency power node according to the expected vehicle speed and the target power generation to obtain a first node, and using the first node as the target node, wherein the first node is positively correlated with the expected vehicle speed and the target power generation respectively; the second control mode includes matching from the range extender power node according to the real-time vehicle speed and the target power generation to obtain a second node, and using the second node as the target node, wherein the second node is positively correlated with the real-time vehicle speed and the target power generation respectively.

[0014] The present application provides a vehicle range extender control system, comprising: a setting module for setting a first control mode and a second control mode, the first control mode comprising determining a first node from a high-efficiency power node, and the second control mode comprising determining a second node from a range extender power node, wherein the range extender power node is determined based on the range extender torque and / or the range extender speed, and the high-efficiency power node is a part of the range extender power node; an acquisition module for acquiring a target power generation power corresponding to a target vehicle in a preset time period; a strategy module for formulating a control strategy that meets the target power generation power according to the first control mode and the second control mode, with maximizing the duration of the first control mode in the preset time period as a strategy formulation target; and a control module for determining a target node according to the control strategy, so as to control the range extender of the target vehicle to generate power according to the target node.

[0015] The present application provides a vehicle terminal, comprising: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the vehicle terminal performs the above method.

[0016] Beneficial effects of this application:

[0017] By setting a first control mode for determining a first node from a high-efficiency power node and a second control mode for determining a second node from a range extender power node, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation target. A control strategy that meets the target power generation is formulated based on the first and second control modes, thereby obtaining a target node based on the control strategy, and controlling the range extender of the target vehicle to generate power through the target node. In this way, a high-efficiency power node is determined from the range extender power node, and after obtaining the target power generation, a control strategy that meets the target power generation is formulated based on the first and second control modes, and the duration of the first control mode within the preset time period is maximized, thereby maximizing the duration of the vehicle range extender in the high-efficiency range, thereby improving the power generation efficiency of the range extender. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of a vehicle range extender control method in an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a universal characteristic curve in an embodiment of the present application;

[0020] Figure 3 This is a flow chart of a method for formulating a control strategy for a vehicle range extender in an embodiment of the present application;

[0021] Figure 4 This is a flow chart of a control strategy execution method in an embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the structure of a vehicle range extender control system in an embodiment of the present application;

[0023] Figure 6 It is a schematic structural diagram of a vehicle terminal in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and sub-samples in the embodiments can be combined with each other unless there is a conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0026] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring the embodiments of the present invention.

[0027] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0028] Unless otherwise stated, the term "plurality" means two or more.

[0029] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0030] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0031] Combine Figure 1 As shown, an embodiment of the present disclosure provides a vehicle range extender control method, including:

[0032] Step S101, presetting a first control mode and a second control mode;

[0033] Wherein, the first control mode includes determining a first node from high-efficiency power nodes;

[0034] wherein the second control mode includes determining a second node from the range extender power node;

[0035] wherein the range extender power node is determined based on the range extender torque and / or the range extender speed;

[0036] Among them, the high-efficiency power node is a part of the range extender power node;

[0037] Step S102, obtaining the target power generation corresponding to the target vehicle in a preset time period;

[0038] Step S103, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and formulating a control strategy that meets the target power generation according to the first control mode and the second control mode;

[0039] Step S104, determining a target node according to the control strategy, and controlling the range extender of the target vehicle to generate electricity according to the target node;

[0040] The target node includes the first node and / or the second node.

[0041] The vehicle range extender control method provided by the embodiment of the present disclosure sets a first control mode for determining a first node from a high-efficiency power node and a second control mode for determining a second node from a range extender power node. The strategy formulation objective is to maximize the duration of the first control mode within a preset time period. A control strategy that meets the target power generation is formulated based on the first and second control modes. The target node is then acquired based on the control strategy, and the range extender of the target vehicle is controlled to generate power through the target node. In this way, a high-efficiency power node is determined from the range extender power node, and after the target power generation is acquired, a control strategy that meets the target power generation is formulated based on the first and second control modes. The duration of the first control mode within the preset time period is maximized, thereby maximizing the duration of the first control mode within the preset time period. This allows the vehicle range extender to be in the high-efficiency range to the greatest extent possible, thereby improving the power generation efficiency of the range extender.

[0042] like Figure 2As shown, the embodiment of the present disclosure provides a universal characteristic curve, wherein the horizontal axis of the universal characteristic curve represents the speed of the range extender, the vertical axis of the universal characteristic curve represents the torque of the range extender, and the universal characteristic curve is used to represent the correspondence between the speed of the range extender, the torque of the range extender and the power of the range extender; in the universal characteristic curve, the power nodes of the range extender are set, including power node A, power node B, power node C and power node D; power node A is a high-efficiency power node, wherein its range extender speed and range extender torque both fall into the highest efficiency interval of the universal characteristic curve, indicating that power node A can ensure the high efficiency of the range extender; power node B is not a high-efficiency power node, wherein power node B and power node D are Point A is on the equal power curve 1, and the two have equal power. However, since power node B does not fall into the highest efficiency range, the power generation efficiency of power node B is lower than that of power node A, and the range extender speed of power node B is higher, resulting in higher noise. Power node C is not a high-efficiency power node. The power generation power of power node C is less than that of power node A. When the target vehicle is at a low speed, due to the low vehicle environmental noise, power node C is used as a low-power node to control the range extender to meet NVH. Power node D is a high-efficiency power node. Power node D is in the highest efficiency range, and power node D is on the equal power curve 2. The power generation power of power node D is higher than that of power node A.

[0043] Optionally, the target power generation power of the target vehicle corresponding to the preset time period is obtained in the following manner: the current remaining power of the target vehicle is obtained, and the average energy consumption of the target vehicle corresponding to the preset time period is obtained; the preset target power is calculated based on the current remaining power to obtain the power required by the battery, and the length of the time period corresponding to the preset time period is calculated based on the average energy consumption of the vehicle to obtain the power required for driving, so as to determine the target power generation according to the power required by the battery and the power required for driving; the target power generation is calculated based on the length of the time period to obtain the target power generation power.

[0044] In some embodiments, the VDC of the target vehicle obtains the average speed of the target vehicle on the road ahead through map navigation information, and uses the average speed as the expected speed; the expected speed is calculated according to the length of the road ahead to obtain a preset time period.

[0045] In some embodiments, the average energy consumption of the target vehicle during a preset time period is obtained through vehicle testing or historical driving records.

[0046] In some embodiments, the target power generation is calculated using formula (1):

[0047]

[0048] In formula (1), W 目标is the target power generation, target SOC is the preset target power, current SOC is the current remaining power, η is the conversion efficiency from battery to drive system, obtained through calibration, is the average energy consumption of the vehicle, t estimated The length of the time period corresponding to the preset time period.

[0049] In some embodiments, the target power generation is calculated using formula (2):

[0050]

[0051] In formula (2), is the target power generation.

[0052] Optionally, the target node is determined according to the control strategy, including: a first control mode includes matching from the high-efficiency power node according to the expected vehicle speed and the target power generation to obtain a first node, and using the first node as the target node, wherein the first node is positively correlated with the expected vehicle speed and the target power generation respectively; a second control mode includes matching from the range extender power node according to the real-time vehicle speed and the target power generation to obtain a second node, and using the second node as the target node, wherein the second node is positively correlated with the real-time vehicle speed and the target power generation respectively.

[0053] In some embodiments, a real-time vehicle speed is corresponded to 1-3 high-efficiency power nodes, as shown in Table 1, where the power generation power of power node A is less than the power generation power of power node D, and the power generation power of power node D is less than the power generation power of power node E.

[0054] Table 1

[0055]

[0056] In some embodiments, the first control mode is a single-node mode; a high-efficiency power node matching table is generated based on Table 1, as shown in Table 2, the first node is positively correlated with the expected vehicle speed and the target power generation power, respectively; based on the high-efficiency power node matching table, the first node is determined from the high-efficiency power nodes according to the expected vehicle speed and the target power generation power.

[0057] Table 2

[0058]

[0059]

[0060] In some embodiments, a real-time vehicle speed is mapped to a range extender power node, as shown in Table 3, wherein there is a positive correlation between the real-time vehicle speed and the range extender power node.

[0061] Table 3

[0062]

[0063] In some embodiments, the second control mode is a multi-node mode. A range extender power node matching table is generated based on Table 3. As shown in Table 4, the second node is positively correlated with the real-time vehicle speed and the target power generation power, respectively. Based on the range extender power node matching table, the second node is obtained by matching the range extender power nodes according to the real-time vehicle speed and the target power generation power.

[0064] Table 4

[0065]

[0066]

[0067] Optionally, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and a control strategy that meets the target power generation is formulated according to the first control mode and the second control mode, including: if the target vehicle meets a first preset condition, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and a control strategy that meets the target power generation is formulated according to the first control mode and the second control mode, wherein the first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets a preset duration threshold, and the high-speed state includes a real-time vehicle speed greater than or equal to a preset first vehicle speed threshold; if the target vehicle is in a low-speed state, a control strategy is formulated according to the second control mode, wherein the low-speed state includes a real-time vehicle speed less than the first vehicle speed threshold.

[0068] In some embodiments, the first vehicle speed threshold is 70-90 km / h (kilometers per hour), for example, the first vehicle speed threshold is 80 km / h.

[0069] In some embodiments, when the target vehicle is in a low-speed state, the vehicle environment noise is relatively small. If the target node matched by the first control mode and the second control mode has the problem of high speed, the noise is relatively large; therefore, when the target vehicle is in a high-speed state, the target node is matched according to the first control mode and the second control mode. When the target vehicle is in a low-speed state, the low-power target node is matched according to the second control mode to reduce the speed of the range extender and meet the NVH requirements.

[0070] Optionally, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal, and a control strategy that meets the target power generation is formulated according to the first control mode and the second control mode, including: obtaining the expected vehicle speed corresponding to the preset time period; matching the expected vehicle speed and the target power generation from each range extender power node to obtain a first reference node, wherein the first reference node is positively correlated with the expected vehicle speed and the target power generation, respectively; if the first reference node is less than or equal to the target power generation, formulating a control strategy according to the second control mode; if the first reference node is greater than the target power generation, matching the expected vehicle speed and the target power generation from the high-efficiency power node to obtain a second reference node, wherein the second reference node is positively correlated with the expected vehicle speed and the target power generation, respectively; if the second reference node is less than or equal to the target power generation, maximizing the duration of the first control mode within the preset time period is used as a strategy formulation goal, and formulating a control strategy according to the first control mode and the second control mode; if the second reference node is greater than the target power generation, formulating a control strategy according to the first control mode.

[0071] In some embodiments, if a control strategy is jointly formulated based on the first control mode and the second control mode, a mathematical model is established, and the maximum proportion of the duration of the first control mode within a preset time period is calculated based on the mathematical model, so that a control strategy is jointly formulated based on the first control mode and the second control mode, wherein the mathematical model is shown in formula (3):

[0072]

[0073] In formula (3), t1 is the target duration of the first control mode, t2 is the target duration of the second control mode, is the first reference node, P s The second reference node.

[0074] In some embodiments, the second reference node is used as the first node corresponding to the first control mode.

[0075] Combine Figure 3 As shown, an embodiment of the present disclosure provides a control strategy formulation method for a vehicle range extender, comprising:

[0076] Step S301, obtaining the target power generation and expected speed of the target vehicle corresponding to a preset time period;

[0077] Step S302 , matching the power nodes of each range extender according to the desired vehicle speed and the target generated power to obtain a first reference node;

[0078] Among them, the first reference node is positively correlated with the expected vehicle speed and the target power generation;

[0079] Step S303, determine whether the first reference node is less than or equal to the target power generation, if so, jump to step S304, if not, jump to step S305;

[0080] Step S304: formulate a control strategy according to the second control mode.

[0081] Step S305 , matching the high-efficiency power nodes according to the expected vehicle speed and the target power generation to obtain a second reference node;

[0082] Step S306, determine whether the second reference node is less than or equal to the target power generation, if so, jump to step S307, if not, jump to step S308;

[0083] Step S307, taking maximizing the duration of the first control mode within the preset time period as a strategy formulation goal, and formulating a control strategy based on the first control mode and the second control mode;

[0084] Step S308: formulating a control strategy according to the first control mode.

[0085] Optionally, the method also includes at least one of the following: calculating the expected power generation according to the first reference node to obtain a first power generation duration, wherein if the first power generation duration is greater than or equal to the time period length, it is judged that the first reference node is less than or equal to the target power generation power, and if the first power generation duration is less than the time period length, it is judged that the first reference node is greater than the target power generation power; calculating the expected power generation according to the second reference node to obtain a second power generation duration, wherein if the second power generation duration is greater than or equal to the time period length, it is judged that the second reference node is less than or equal to the target power generation power, and if the second power generation duration is less than the time period length, it is judged that the second reference node is greater than the target power generation power.

[0086] In some embodiments, the first power generation duration is calculated using formula (4):

[0087]

[0088] In formula (4), VDC_EstTime_Multipoint is the first power generation duration.

[0089] In some embodiments, if VDC_EstTime_Multipoint≥t estimated , it means that the first reference node is less than or equal to the target power generation. Since the power range represented by the first node is limited, if the first control mode is added to the control strategy, it may not meet the target power generation. It is necessary to formulate a control strategy based on the second control model. If VDC_EstTime_Multipoint<t estimated, it means that the first reference node is greater than the target power generation power. Therefore, the control strategy of adding the first control mode can meet the target power generation power.

[0090] In some embodiments, the second power generation duration is calculated using formula (5):

[0091]

[0092] In formula (5), VDC_EstTime_Singlepoint is the second power generation duration.

[0093] In some embodiments, if VDC_EstTime_Singlepoint≥t estimated , it means that the second reference node is less than or equal to the target power generation. Therefore, the control strategy formulated by the first control mode alone cannot meet the target power generation. Therefore, the control strategy is formulated according to the first control mode and the second control mode. If VDC_EstTime_Singlepoint<t estimated , it means that the second reference node is greater than the target power generation power. Therefore, the first control model alone can meet the target power generation power, and the control strategy is formulated based on the first control mode alone.

[0094] Optionally, if the control strategy only includes the first control mode, the target node is determined according to the control strategy, including: if the target vehicle meets the first preset condition, the target vehicle is controlled to enter the first control mode in the control strategy; if the target vehicle is in a low-speed state, the target vehicle is controlled to enter the second control mode.

[0095] In some embodiments, if the control strategy only includes the second control mode, based on the range extender power node matching table, the target node is obtained by matching the range extender power node according to the real-time vehicle speed and the target power generation power.

[0096] Optionally, if the control strategy includes a first control mode and a second control mode, the target node is determined according to the control strategy, including: in response to a first preset condition or a second preset condition, the target vehicle is controlled to enter the first control mode in the control strategy, and the mode duration of the first control mode is counted, wherein the first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets the preset duration threshold, and the second preset condition includes that the mode duration of the second control mode meets the duration ratio of the second control mode within the preset time period; in response to a third preset condition or a fourth preset condition, the target vehicle is controlled to enter the second control mode in the control strategy, and the mode duration of the second control mode is counted, wherein the third preset condition includes that the real-time vehicle speed is less than the preset second vehicle speed threshold, and the second vehicle speed threshold is less than or equal to the first vehicle speed threshold, and the fourth preset condition includes that the mode duration of the first control mode meets the duration ratio of the first control mode within the preset time period.

[0097] In some embodiments, the preset time threshold is 5 seconds, and the second vehicle speed threshold is 76 km / h.

[0098] In some embodiments, if the target vehicle meets the first preset condition, the target vehicle is controlled to enter the first control mode in the control strategy, and the mode duration of the first control mode is timed; if the target vehicle does not meet the first preset condition, the target vehicle is controlled to enter the second control mode in the control strategy, and the mode duration of the second control mode is timed; when the target vehicle is in the first control mode and the real-time vehicle speed is less than 76km / h, the target vehicle is controlled to enter the second control mode in the control strategy, and the mode duration of the second control mode is timed; if the duration of any mode meets the duration ratio in the control strategy, the control mode is switched.

[0099] Combine Figure 4 As shown, the embodiment of the present disclosure provides a control strategy execution method, including:

[0100] Step S401, obtaining a control strategy;

[0101] Step S402, determining whether the number of control modes in the control strategy is one, if so, skipping to step S403, if not, skipping to step S408;

[0102] Step S403, determining whether the control strategy includes the first control mode, if so, skipping to step S404, if not, skipping to step S407;

[0103] Step S404, determine whether the target vehicle is in a high-speed state, if so, jump to step S405, if not, jump to step S406;

[0104] Step S405 , obtaining the target node according to the first control mode in the control strategy, and jumping to step S404 .

[0105] Step S406: Obtain the target node according to the second control mode in the control strategy, and jump to step S404.

[0106] Step S407: Acquire the target node according to the second control mode in the control strategy.

[0107] Step S408, determining whether the first preset condition or the second preset condition is met, if so, skipping to step S409, if not, skipping to step S410;

[0108] The first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets a preset duration threshold;

[0109] The second preset condition includes that the mode duration of the second control mode satisfies the proportion of the duration of the second control mode within the preset time period.

[0110] Step S409: Obtain the target node according to the first control mode in the control strategy, calculate the mode duration, and then jump to step S408.

[0111] Step S410: Obtain the target node according to the second control mode in the control strategy, calculate the mode duration, and jump to step S408.

[0112] In some embodiments, maximizing the duration of the first control mode within a preset time period is used as a strategy formulation goal. After formulating a control strategy that meets the target power generation power according to the first control mode and the second control mode, the method also includes: in response to changes in the preset time period or target power generation power, updating the control strategy and resetting the mode duration of the first control mode and the mode duration of the second control mode; if the updated control strategy includes the first control mode, obtaining the current control mode of the target vehicle; if the current control mode is the first control mode, controlling the target vehicle to enter the first control mode in the control strategy; if the current control mode is the second control mode, when the target vehicle is in a high-speed state and the duration of the high-speed state meets the preset duration threshold, controlling the target vehicle to enter the first control mode in the control strategy.

[0113] In some embodiments, if the road section ahead of the target vehicle changes, the control strategy is updated and the mode duration is recalculated; if the target vehicle is in the first control mode when the control strategy is updated, and the updated control strategy includes the first control strategy, the first control mode is maintained until the real-time speed of the target vehicle is less than 76 km / h; if the target vehicle is in the second control mode when the control strategy is updated, and the updated control strategy includes the first control strategy, in response to the target vehicle meeting the first preset condition, the target vehicle is controlled to enter the first control strategy.

[0114] Combine Figure 5 As shown, an embodiment of the present disclosure provides a vehicle range extender control system, including a setting module 501 , an acquisition module 502 , a strategy module 503 and a control module 504 .

[0115] The setting module 501 is used to set a first control mode and a second control mode, wherein the first control mode includes determining a first node from a high-efficiency power node, and the second control mode includes determining a second node from a range extender power node, wherein the range extender power node is determined based on the range extender torque and / or the range extender speed, and the high-efficiency power node is a part of the range extender power node;

[0116] The acquisition module 502 is used to obtain the target power generation corresponding to the target vehicle in a preset time period;

[0117] The strategy module 503 is configured to maximize the duration of the first control mode within a preset time period as a strategy formulation goal, and formulate a control strategy that meets the target power generation according to the first control mode and the second control mode;

[0118] The control module 504 is used to determine the target node according to the control strategy, so as to control the range extender of the target vehicle to generate electricity according to the target node.

[0119] The vehicle range extender control system provided by the embodiment of the present disclosure is configured to determine a first control mode for a first node from a high-efficiency power node and a second control mode for a second node from a range extender power node. The strategy formulation objective is to maximize the duration of the first control mode within a preset time period. A control strategy that meets the target power generation is formulated based on the first and second control modes. The target node is then acquired based on the control strategy, and the range extender of the target vehicle is controlled to generate power through the target node. In this way, a high-efficiency power node is determined from the range extender power node, and after the target power generation is acquired, a control strategy that meets the target power generation is formulated based on the first and second control modes. The first control mode is then maximized within the preset time period, thereby maximizing the duration of the first control mode within the high-efficiency range of the vehicle range extender and improving the range extender's power generation efficiency.

[0120] An embodiment of the present disclosure further provides a vehicle terminal, comprising: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the vehicle terminal executes the above method.

[0121] Figure 6 The following is a schematic diagram showing the structure of a computer system of a vehicle terminal suitable for implementing the embodiment of the present application. Figure 6 The computer system 600 of the vehicle terminal shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0122] like Figure 6 As shown, the computer system 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage part 608 into the random access memory (RAM) 603, such as executing the method in the above embodiment. Various programs and data required for system operation are also stored in the RAM 603. The CPU 601, ROM 602 and RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0123] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, and the like; an output section 607 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 608 including a hard disk; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card or a modem. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. Removable media 611, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 610 as needed, so that computer programs read therefrom can be installed into the storage section 608 as needed.

[0124] The vehicle terminal disclosed in this embodiment includes a processor, a memory, a transceiver and a communication interface. The memory and the communication interface are connected to the processor and the transceiver and complete communication with each other. The memory is used to store computer programs, the communication interface is used to communicate, and the processor and the transceiver are used to run the computer program, so that the vehicle terminal executes each step of the above method.

[0125] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Parts and subsamples of some embodiments may be included in or replace parts and subsamples of other embodiments. Moreover, the terms used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of a stated subsample, whole, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other subsamples, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the statement "comprises a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0126] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. Technicians can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0127] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some sub-samples can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, the functional units in the embodiments of the present disclosure can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0128] The flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions marked in the boxes can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A vehicle range extender control method, characterized in that: include: presetting a first control mode and a second control mode, wherein the first control mode includes determining a first node from high-efficiency power nodes, and the second control mode includes determining a second node from range extender power nodes, wherein the range extender power node is determined based on the range extender torque and / or the range extender speed, and the high-efficiency power node is a portion of the range extender power nodes; Obtain the target power generation corresponding to the target vehicle in a preset time period; Taking maximizing the duration of the first control mode within a preset time period as a strategy formulation goal, a control strategy that meets the target power generation is formulated according to the first control mode and the second control mode; determining a target node according to the control strategy, so as to control the range extender of the target vehicle to generate electricity according to the target node, wherein the target node includes the first node and / or the second node; A control strategy that satisfies the target power generation power is formulated based on the first and second control modes, with maximizing the duration of the first control mode within a preset time period as a strategy formulation goal. The strategy includes: obtaining an expected vehicle speed corresponding to the preset time period; matching each of the range extender power nodes according to the expected vehicle speed and the target power generation power to obtain a first reference node, wherein the first reference node is positively correlated with the expected vehicle speed and the target power generation power, respectively; if the first reference node is less than or equal to the target power generation power, formulating a control strategy based on the second control mode; if the first reference node is greater than the target power generation power, matching each of the high-efficiency power nodes according to the expected vehicle speed and the target power generation power to obtain a second reference node, wherein the second reference node is positively correlated with the expected vehicle speed and the target power generation power, respectively; if the second reference node is less than or equal to the target power generation power, with maximizing the duration of the first control mode within the preset time period as a strategy formulation goal, formulating a control strategy based on the first and second control modes; if the second reference node is greater than the target power generation power, formulating a control strategy based on the first control mode; If the control strategy includes a first control mode and a second control mode, in response to a first preset condition or a second preset condition, the target vehicle is controlled to enter the first control mode in the control strategy, and the mode duration of the first control mode is counted, wherein the first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets a preset duration threshold, and the high-speed state includes that the real-time vehicle speed is greater than or equal to a preset first vehicle speed threshold, and the second preset condition includes that the mode duration of the second control mode meets the duration ratio of the second control mode within a preset time period; in response to a third preset condition or a fourth preset condition, the target vehicle is controlled to enter the second control mode in the control strategy, and the mode duration of the second control mode is counted, wherein the third preset condition includes that the real-time vehicle speed is less than the preset second vehicle speed threshold, and the second vehicle speed threshold is less than or equal to the first vehicle speed threshold, and the fourth preset condition includes that the mode duration of the first control mode meets the duration ratio of the first control mode within the preset time period.

2. The method according to claim 1, characterized in that The target power generation of the target vehicle in the preset time period is obtained by the following method: Obtaining the current remaining power of the target vehicle and obtaining the average energy consumption of the target vehicle corresponding to a preset time period; Calculating a preset target power level based on the current remaining power level to obtain a battery power requirement, and calculating a time period length corresponding to the preset time period based on the average energy consumption of the vehicle to obtain a driving power requirement, thereby determining a target power generation amount based on the battery power requirement and the driving power requirement; The target power generation amount is calculated according to the length of the time period to obtain the target power generation power.

3. The method according to claim 1, characterized in that Taking maximizing the duration of the first control mode within a preset time period as a strategy formulation goal, formulating a control strategy that meets the target power generation according to the first control mode and the second control mode includes: If the target vehicle meets the first preset condition, maximizing the duration of the first control mode within the preset time period is used as a strategy formulation goal, and formulating a control strategy that satisfies the first control mode and the second control mode; If the target vehicle is in a low-speed state, a control strategy is formulated according to the second control mode, wherein the low-speed state includes a real-time vehicle speed being less than the first vehicle speed threshold.

4. The method according to claim 3, characterized in that If the control strategy only includes the first control mode, it includes: If the target vehicle meets a first preset condition, controlling the target vehicle to enter a first control mode in the control strategy; If the target vehicle is in a low speed state, the target vehicle is controlled to enter a second control mode.

5. The method according to claim 1, wherein The method further comprises: Calculating the expected power generation according to the first reference node to obtain a first power generation duration, wherein if the first power generation duration is greater than or equal to the time period, determining that the first reference node is less than or equal to the target power generation; and if the first power generation duration is less than the time period, determining that the first reference node is greater than the target power generation; The expected power generation is calculated based on the second reference node to obtain a second power generation duration. If the second power generation duration is greater than or equal to the time period length, it is determined that the second reference node is less than or equal to the target power generation power. If the second power generation duration is less than the time period length, it is determined that the second reference node is greater than the target power generation power.

6. The method according to claim 1, characterized in that Determining a target node according to the control strategy includes: The first control mode includes matching the high-efficiency power nodes according to the desired vehicle speed and the target generated power to obtain a first node, and using the first node as a target node, wherein the first node is positively correlated with the desired vehicle speed and the target generated power respectively; The second control mode includes matching the range extender power node according to the real-time vehicle speed and the target power generation to obtain a second node, and using the second node as the target node, wherein the second node is positively correlated with the real-time vehicle speed and the target power generation, respectively.

7. A vehicle range extender control system, characterized in that: include: a setting module configured to set a first control mode and a second control mode, wherein the first control mode includes determining a first node from high-efficiency power nodes, and the second control mode includes determining a second node from range extender power nodes, wherein the range extender power nodes are determined based on the range extender torque and / or the range extender speed, and the high-efficiency power nodes are part of the range extender power nodes; An acquisition module is used to obtain the target power generation corresponding to the target vehicle in a preset time period; a strategy module, configured to formulate a control strategy that satisfies the target power generation according to the first control mode and the second control mode, taking maximizing the duration of the first control mode within a preset time period as a strategy formulation goal; a control module, configured to determine a target node according to the control strategy, so as to control the range extender of the target vehicle to generate electricity according to the target node; The strategy module formulates a control strategy that satisfies the target power generation power according to the first and second control modes, taking maximizing the duration of the first control mode within a preset time period as a strategy formulation goal, and obtains an expected vehicle speed corresponding to the preset time period in the following manner; matches each of the range extender power nodes according to the expected vehicle speed and the target power generation power to obtain a first reference node, wherein the first reference node is positively correlated with the expected vehicle speed and the target power generation power, respectively; if the first reference node is less than or equal to the target power generation power, formulates a control strategy according to the second control mode; if the first reference node is greater than the target power generation power, matches the high-efficiency power nodes according to the expected vehicle speed and the target power generation power to obtain a second reference node, wherein the second reference node is positively correlated with the expected vehicle speed and the target power generation power, respectively; if the second reference node is less than or equal to the target power generation power, maximizes the duration of the first control mode within the preset time period as a strategy formulation goal, and formulates a control strategy according to the first and second control modes; if the second reference node is greater than the target power generation power, formulates a control strategy according to the first control mode; If the control strategy includes a first control mode and a second control mode, the control module controls the target vehicle in the following manner: in response to a first preset condition or a second preset condition, the target vehicle is controlled to enter the first control mode in the control strategy, and the mode duration of the first control mode is counted, wherein the first preset condition includes that the target vehicle is in a high-speed state, and the duration of the high-speed state meets a preset duration threshold, and the high-speed state includes that the real-time vehicle speed is greater than or equal to a preset first vehicle speed threshold, and the second preset condition includes that the mode duration of the second control mode meets the duration ratio of the second control mode within a preset time period; in response to a third preset condition or a fourth preset condition, the target vehicle is controlled to enter the second control mode in the control strategy, and the mode duration of the second control mode is counted, wherein the third preset condition includes that the real-time vehicle speed is less than a preset second vehicle speed threshold, and the second vehicle speed threshold is less than or equal to the first vehicle speed threshold, and the fourth preset condition includes that the mode duration of the first control mode meets the duration ratio of the first control mode within a preset time period.

8. A vehicle terminal, characterized in that: include: processor and memory; The memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the vehicle terminal performs the method according to any one of claims 1 to 6.

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