Switching control method and device for power consumption and power maintenance stages of a vehicle

Abstract

The application provides a switching control method and device for power consumption and power maintenance stages of a vehicle, an electronic device and a storage medium. Firstly, after the current power proportion reaches an engine starting threshold, the vehicle is switched to engine series driving. Compared with the prior art, the engine starting threshold is not set, so that all threshold values are necessarily higher than the minimum SOC protection point proportion due to the configuration of a power balance point proportion lower than the minimum SOC protection point proportion, thereby forming three control states: 1, the SOC is full and is reduced to the power maintenance mode starting threshold, 2, the SOC is reduced from the power maintenance mode starting threshold to the engine starting threshold, and 3, from the engine starting threshold to the minimum SOC protection point threshold, so that the driving time of the power battery is prolonged to the above-mentioned 1 control state and 2 control state, and compared with the prior art, the scheme only adopted in the control state 1 has a longer endurance.

Description

Technical Field

[0001] This invention relates to the field of intelligent driving technology, specifically to a method, device, electronic device, and storage medium for switching control between the power consumption and power maintenance phases of a vehicle. Background Technology

[0002] A typical hybrid electric vehicle (HEV) is powered by two sources: an internal combustion engine and a battery. A generator converts mechanical energy into electrical energy, and both the internal combustion engine and the electric motor contribute to the driving force. Based on whether they can be externally charged, HEVs are mainly divided into two types: battery-sustaining HEVs and plug-in hybrid electric vehicles (PHEVs).

[0003] Charge-Sustaining HEVs (CS HEVs) refer to hybrid electric vehicles that cannot be connected to an external power grid for charging. Plug-in Hybrid Electric Vehicles (PHEVs) are hybrid electric vehicles that, in addition to charge-staining HEVs, can be connected to an external charging device. Currently, research and development on CD / CS phase division and control strategies typically begins with the FCT testing process. The Charge-Depleting Cycle refers to the cycle in which the state of charge of the on-board energy storage system gradually decreases, i.e., the CD phase cycle. The cycle in which the state of charge of the on-board energy storage system is maintained within a certain tolerance range, and multiple operating condition tests are performed, constitutes the Charge-Sustaining (CS) phase cycle. The initial state of the CD phase is that the plug-in hybrid electric vehicle's battery is initially at full SOC. Afterwards, the vehicle's battery energy is consumed, and when it falls below a certain SOC, it enters the CS phase, as detailed below:

[0004] When SOC > SOChigh, the battery releases electrical energy to ensure that SOC fluctuates within the range between SOChigh and SOClow. The vehicle controller may select one of the two operating states in Hybrid Drive: Hybrid Assist and Hybrid Engine Alone.

[0005] When SOC < SOClow, the battery cannot release electrical energy. In this case, the vehicle controller may select one of the two operating states in Hybrid Drive: Hybrid Charge and Hybrid Engine Alone.

[0006] When SOChigh > SOC > SOClow, the battery enters a cycle of discharging and charging, and the vehicle controller may cycle through two working states in Hybrid Drive: Hybrid Assist and Hybrid Charge.

[0007] It can be seen that the existing technology uses a single SOC threshold for switching between CS and CD states, resulting in a rigid switching mode that cannot flexibly cope with complex scenarios. Summary of the Invention

[0008] To address the problems in the prior art, this invention provides a method, device, electronic device, and storage medium for switching control between the power consumption and power maintenance phases of a vehicle. It aims to solve the shortcomings of the prior art, which uses a single SOC threshold for switching between CS and CD states, resulting in a rigid switching mode and an inability to flexibly cope with complex scenarios.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0010] The first aspect of this application provides a method for switching control between a vehicle's power consumption and power maintenance phases, including:

[0011] Obtain the current percentage of charge in the vehicle's power battery;

[0012] After the current battery percentage reaches the transmitter start threshold, the vehicle will be switched to engine series drive, where the engine start threshold is lower than the battery balance point percentage.

[0013] In a preferred embodiment, it further includes:

[0014] Under the series drive of the engine, if the current battery percentage is higher than the battery balance point percentage but lower than the battery hold-up mode start threshold, the series drive of the engine is maintained.

[0015] In a preferred embodiment, it further includes:

[0016] When the vehicle is powered by the battery, if the current battery percentage is lower than the battery consumption mode shutdown threshold, it will exit the battery consumption phase.

[0017] In a preferred embodiment, it further includes:

[0018] When the vehicle is powered by the battery, if the current battery percentage is lower than the battery maintenance mode activation threshold, it enters the battery maintenance phase.

[0019] In a preferred embodiment, if the vehicle is in an initial power-on state, the switching control method further includes:

[0020] Determine if the current battery percentage is lower than the preset minimum battery percentage. If it is not higher, control the vehicle to enter the power preservation mode.

[0021] In a preferred embodiment, it further includes:

[0022] Obtain information about the user's selected driving mode;

[0023] The engine start threshold is determined based on the preset correspondence between driving modes and the engine start threshold, according to the driving mode information selected by the user.

[0024] In a preferred embodiment, it further includes:

[0025] Acquire power demand data at different stages under various driving modes;

[0026] For each power demand data point, different engine start thresholds are set, and the pure electric range of the vehicle's power battery and the total range of the vehicle are calculated sequentially under that engine start threshold.

[0027] Based on the pure electric range and total range corresponding to different engine start thresholds under each power demand data, as well as the pure electric range weight and total range weight, the comprehensive range corresponding to each engine start threshold is generated.

[0028] For each driving mode, select the engine start threshold that corresponds to the highest overall range, and generate the preset correspondence based on the selected engine start threshold and the corresponding driving mode.

[0029] A second aspect of this application provides a switching control device for a vehicle's power consumption and power maintenance phases, comprising:

[0030] The acquisition module obtains the current percentage of battery charge in the vehicle.

[0031] The switching module switches the vehicle to engine series drive after the current battery percentage reaches the transmitter start threshold, where the engine start threshold is lower than the battery balance point percentage.

[0032] In another aspect, the present invention provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a switching control method for the power consumption and power maintenance phases of the vehicle.

[0033] In another aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for switching between a vehicle's power consumption and power maintenance phases.

[0034] As can be seen from the above technical solution, the vehicle power consumption and power maintenance phase switching control method, device, electronic device and storage medium provided by the present invention first switches the vehicle to engine series drive after the current power percentage reaches the transmitter start threshold. Compared with the prior art, which does not set an engine start threshold, the prior art needs to use engine series drive after entering the power maintenance phase. Therefore, this application configures a percentage lower than the power balance point, and all thresholds must be higher than the minimum SOC protection point percentage, thus forming three control states: 1. When the SOC is fully charged, it is reduced to the power maintenance mode start threshold; 2. The SOC is reduced from the power maintenance mode start threshold to the transmitter start threshold; 3. From the transmitter start threshold to the minimum SOC protection point threshold. Thus, the power battery driving time is extended to the above-mentioned control states 1 and 2. The prior art only uses control state 1. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a flowchart illustrating a method for switching control between the power consumption and power maintenance phases of a vehicle, according to an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of a scenario using existing technologies.

[0038] Figure 3 This is a schematic diagram of a scenario in an embodiment of this application.

[0039] Figure 4 This is a schematic diagram of the initial power-on mode in an embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of the vehicle operation after power-on in an embodiment of the present invention.

[0041] Figure 6 This is a schematic diagram of a control device for switching between power consumption and power maintenance phases in a vehicle.

[0042] Figure 7 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Currently, research and development on CD / CS phase division and control strategies typically begin with the FCT testing process. The Charge-Depleting Cycle refers to the cycle in which the state of charge (SOC) of the on-board energy storage system gradually decreases, i.e., the CD phase cycle. The on-board energy storage system's SOC is maintained within a certain tolerance range during multiple operating condition tests; this cycle constitutes the Charge-Sustaining (CS) phase cycle. The initial state of the CD phase is the plug-in hybrid electric vehicle's battery initially reaching full SOC. Afterward, the vehicle's battery energy is depleted, and when it falls below a certain SOC, it enters the CS phase, as detailed below:

[0045] When SOC > SOChigh, the battery releases electrical energy to ensure that SOC fluctuates within the range between SOChigh and SOClow. The vehicle controller may select one of the two operating states in Hybrid Drive: Hybrid Assist and Hybrid Engine Alone.

[0046] When SOC < SOClow, the battery cannot release electrical energy. In this case, the vehicle controller may select one of the two operating states in Hybrid Drive: Hybrid Charge and Hybrid Engine Alone.

[0047] When SOChigh > SOC > SOClow, the battery enters a cycle of discharging and charging, and the vehicle controller may cycle through two working states in Hybrid Drive: Hybrid Assist and Hybrid Charge.

[0048] It can be seen that the existing technology uses a single SOC threshold for switching between CS and CD states, resulting in a rigid switching mode that cannot flexibly cope with complex scenarios.

[0049] This application adds a third control state to the original two states by setting an additional control threshold. By comparing the thresholds corresponding to the three states, the pure electric drive mode can be extended. The core concept is as follows: after the current battery percentage reaches the generator start threshold, the vehicle is switched to engine series drive. The engine start threshold is lower than the battery balance point percentage. Compared to existing technologies that do not set an engine start threshold, which require engine series drive to be used after entering the battery maintenance phase, this application, by configuring a threshold lower than the battery balance point percentage, ensures that all thresholds are higher than the minimum SOC protection point percentage, thus forming three control states: 1. SOC decreases from the battery maintenance mode start threshold to the generator start threshold; 2. SOC decreases from the battery maintenance mode start threshold to the generator start threshold; 3. From the generator start threshold to the minimum SOC protection point threshold. This extends the battery drive time to control states 1 and 2. Existing technologies only use battery drive in control state 1. This application adds a battery drive time period, thereby improving the overall EV mode drive duration and EV range.

[0050] Combination Figure 1 As shown, the first aspect of this application provides a method for switching control between the power consumption and power maintenance phases of a vehicle, including:

[0051] S1: Obtain the current percentage of battery charge in the vehicle;

[0052] S2: After the current battery percentage reaches the transmitter start threshold, the vehicle is switched to engine series drive, where the engine start threshold is lower than the battery balance point percentage.

[0053] The present invention provides a method for switching control between the power consumption and power maintenance phases of a vehicle. First, after the current power percentage reaches the transmitter start threshold, the vehicle is switched to engine series drive. Compared with the prior art, which does not set an engine start threshold, the prior art requires the engine series drive to be used after entering the power maintenance phase. Therefore, this application configures a percentage lower than the power balance point, while all thresholds are necessarily higher than the minimum SOC protection point percentage, thus forming three control states: 1. When the SOC is fully charged, it is reduced to the power maintenance mode start threshold; 2. The SOC is reduced from the power maintenance mode start threshold to the transmitter start threshold; 3. From the transmitter start threshold to the minimum SOC protection point threshold. This extends the driving time of the power battery to the above-mentioned control states 1 and 2. The prior art only uses control state 1.

[0054] The following is combined with Figures 2 to 6 The embodiments of this application will be described in detail, wherein Figure 5This application illustrates a lane-changing diagram in an embodiment of the present application. Figure 6 A schematic diagram of the overall framework of this application is shown.

[0055] In this embodiment, the main body executing the switching control method for the vehicle's power consumption and power maintenance phases can be an in-vehicle device installed on the vehicle, such as a vehicle infotainment system, or a mobile terminal that communicates with the vehicle (e.g., via Bluetooth), such as a mobile phone or a portable laptop. Furthermore, this application also allows the vehicle to send relevant data to a cloud server via a wireless communication module, and the cloud server to execute the data and then transmit the results back to the vehicle for control. This application does not impose any restrictions on this.

[0056] like Figure 2 As shown, in the prior art, the state switching between CS and CD is determined by a single SOC threshold. When the SOC is lower than the battery hold-up mode start threshold, the engine starts; when the SOC is higher than the battery hold-up mode start threshold, EV drive is maintained.

[0057] like Figure 3 As shown, this application first configures a new threshold, namely the engine start threshold. The engine start threshold is lower than the percentage of the battery balance point. In addition, the engine start in this application is only started when the SOC reaches the engine start threshold, thus extending the duration of EV mode driving.

[0058] In a preferred embodiment, the method further includes: under the series drive of the engine, if the current battery percentage is higher than the battery balance point percentage but lower than the battery hold-up mode start threshold, the series drive of the engine is maintained.

[0059] In this embodiment, under the condition of engine series drive, that is Figure 3 Under the series drive of the engine, the SOC of the power battery shows a gradual upward trend. In this case, if the current power percentage is higher than the power balance point but lower than the power hold mode activation threshold, the series drive of the engine will still be maintained. Since the prior art does not add a new control threshold, it only judges whether it is lower than the power hold mode activation threshold. The prior art does not consider whether the power battery SOC is lower than the power balance point percentage. However, this application takes this situation into consideration and distinguishes between them. When it is lower than the power balance point percentage, this application is in CS charging mode. At this time, the engine charges the power battery faster and maintains an almost constant charging speed. When it is higher than the power balance point percentage, the charging speed is slowed down and it switches to the CS operation stage. This is more conducive to battery protection and extends battery life.

[0060] In a preferred embodiment, the method further includes: when the vehicle is powered by the battery, if the current battery percentage is lower than the battery consumption mode shutdown threshold, the vehicle exits the battery consumption phase.

[0061] In this embodiment, as Figure 3 As shown, in this embodiment, when the current battery percentage is lower than the battery consumption mode shutdown threshold, the battery consumption phase ends. That is, in this embodiment, the battery consumption phase is further extended, providing a basis for configuring a longer EV mode.

[0062] In a preferred embodiment, the method further includes: when the vehicle is powered by the power battery, if the current battery percentage is lower than the battery maintenance mode activation threshold, the vehicle enters the battery maintenance phase.

[0063] Furthermore, existing technologies can only control the switching between the power consumption and power maintenance phases after power-on completion, i.e., after the vehicle starts. This application can further control the switching between the power consumption and power maintenance phases during the initial power-on state. Specifically, if the vehicle is in the initial power-on state; the switching control method further includes:

[0064] Determine if the current battery percentage is lower than the preset minimum battery percentage. If it is not higher, control the vehicle to enter the power preservation mode.

[0065] In this embodiment, the entire process of switching control between the power consumption during the initial power-on state and the power maintenance phase is as follows: Figure 4 As shown, for ease of description, this application defines Threshold_4 as the power consumption mode shutdown threshold, which can generally be 28%, but can also be other percentages, and this application is not limited to this.

[0066] Furthermore, in this application embodiment, Threshold_1 is defined as the power retention mode start threshold, which is generally 25%, the power balance point percentage Target SOC, also known as the target SOC, is generally 23%, Threshold_2 is the transmitter start threshold, which can be 17% in this application, and Threshold_3 is the preset minimum power percentage, which is generally 15%.

[0067] like Figure 4As shown, during the initialization and power-on phase, this application first initializes and reads the current SOC, then determines whether SOC > Threshold_4. If yes, it enters EV drive mode, EV MODE STATE_2. If no, it determines whether Threshold_4 > SOC > Threshold_1. If yes, it enters CS MODE STATE_1, the battery holding mode. If no, it continues to determine whether Threshold_1 > SOC > Threshold_2. If yes, it enters engine series drive mode. If no, it continues to determine whether Threshold_2 > SOC > Threshold_3. If yes, it enters CS_Charging MODESTATE_0, the charging mode during the battery holding phase. If Threshold_3 > SOC, it enters the battery preservation mode.

[0068] like Figure 5 As shown, this application can also be used during the vehicle operation phase, such as... Figure 5 As shown, the vehicle's operation can be cyclically determined. Initially, the vehicle is in EV MODE STATE_2, i.e., battery-driven mode. Then, it checks if SOC > Threshold_2. If it is, it remains in EV MODE STATE_2; otherwise, it enters CS_Charging MODESTATE_0, i.e., charging mode is activated, switching to engine-driven mode. Next, it checks if SOC > Threshold_1. If it is, it enters battery hold mode (CS mode state_1); otherwise, it returns to charging mode. Finally, it checks if SOC > Threshold_4. If it is, it returns to power-driven mode; otherwise, it returns to battery hold mode.

[0069] In a preferred embodiment, it further includes:

[0070] Obtain information about the user's selected driving mode;

[0071] The engine start threshold is determined based on the preset correspondence between driving modes and the engine start threshold, according to the driving mode information selected by the user.

[0072] In this embodiment, each driving mode corresponds to a different engine start threshold. That is, compared to existing technologies, the switching threshold for each stage needs to remain fixed. However, this application adds an engine start threshold while keeping other thresholds constant. This engine start threshold can be flexibly changed based on the driving mode, thus matching various driving modes and achieving optimized range.

[0073] In a preferred embodiment, it further includes:

[0074] Acquire power demand data at different stages under various driving modes;

[0075] For each power demand data point, different engine start thresholds are set, and the pure electric range of the vehicle's power battery and the total range of the vehicle are calculated sequentially under that engine start threshold.

[0076] Based on the pure electric range and total range corresponding to different engine start thresholds under each power demand data, as well as the pure electric range weight and total range weight, the comprehensive range corresponding to each engine start threshold is generated.

[0077] For each driving mode, select the engine start threshold that corresponds to the highest overall range, and generate the preset correspondence based on the selected engine start threshold and the corresponding driving mode.

[0078] This embodiment specifically describes how to set the engine start threshold. That is, this application converts the engine-driven range and the pure electric range into weights, so that the different range capabilities of the two can be measured on the same dimension. Combining the power parameters under different power demand data, the optimal comprehensive range under each power demand is given. The engine start threshold obtained by combining the optimal comprehensive range can, on the one hand, not affect the use of EV mode, and on the other hand, maximize the use of EV mode.

[0079] A second aspect of this application provides a switching control device for a vehicle's power consumption and power maintenance phases, such as... Figure 6 As shown, it includes:

[0080] Module 1 retrieves the current percentage of battery charge in the vehicle's power battery.

[0081] Switching module 2 switches the vehicle to engine series drive after the current battery percentage reaches the transmitter start threshold, where the engine start threshold is lower than the battery balance point percentage.

[0082] As can be seen from the above embodiments, the vehicle power consumption and power maintenance phase switching control device provided by the present invention, through the configuration of an acquisition module, a switching module, and a vehicle automatic lane changing module, firstly switches the vehicle to engine series drive after the current power percentage reaches the transmitter start threshold. Compared with the prior art, which does not set an engine start threshold, the prior art needs to use engine series drive after entering the power maintenance phase. Therefore, the present application, by configuring a percentage lower than the power balance point, and since all thresholds must be higher than the minimum SOC protection point percentage, forms three control states: 1. When the SOC is fully charged, it is reduced to the power maintenance mode start threshold; 2. The SOC is reduced from the power maintenance mode start threshold to the transmitter start threshold; 3. From the transmitter start threshold to the minimum SOC protection point threshold. Thus, the power battery driving time is extended to the above-mentioned control states 1 and 2. The prior art only uses control state 1.

[0083] From a hardware perspective, in order to provide an embodiment of the electronic device for implementing all or part of the switching control method for the power consumption and power maintenance phases of the vehicle, the electronic device specifically includes the following:

[0084] The device comprises a processor, memory, a communications interface, and a bus; wherein the processor, memory, and communications interface communicate with each other via the bus; the communications interface is used to realize information transmission between servers, devices, distributed message middleware cluster devices, various databases, and user terminals, etc.; the electronic device can be a desktop computer, tablet computer, or mobile terminal, etc., and this embodiment is not limited to these. In this embodiment, the electronic device can be implemented with reference to the embodiments of the vehicle's power consumption and power maintenance phase switching control method and the vehicle's power consumption and power maintenance phase switching control device, the contents of which are incorporated herein, and repeated details will not be described again.

[0085] Figure 7 This is a schematic block diagram illustrating the system configuration of an electronic device 9600 according to an embodiment of the present invention. Figure 7 As shown, the electronic device 9600 may include a central processing unit 9100 and a memory 9140; the memory 9140 is coupled to the central processing unit 9100. It is worth noting that... Figure 7 This is an example; other types of structures can also be used to supplement or replace this structure to achieve telecommunications functions or other functions.

[0086] In one embodiment, the vehicle's power consumption and power maintenance phase switching control functions can be integrated into the central processing unit 9100.

[0087] In another embodiment, the switching control device for the vehicle's power consumption and power maintenance phases can be configured separately from the central processing unit 9100. For example, the switching control device for the vehicle's power consumption and power maintenance phases can be configured as a chip connected to the central processing unit 9100, and the switching control function for the vehicle's power consumption and power maintenance phases can be realized through the control of the central processing unit.

[0088] like Figure 7 As shown, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily need to include these components. Figure 7 All components shown; in addition, the electronic device 9600 may also include Figure 7 For components not shown, please refer to existing technology.

[0089] like Figure 7 As shown, the central processing unit 9100, sometimes also referred to as a controller or operating control, may include a microprocessor or other processor device and / or logic device, which receives inputs and controls the operation of various components of the electronic device 9600.

[0090] The memory 9140 may be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store the aforementioned failure-related information, and also store a program for executing that information. The central processing unit 9100 may execute the program stored in the memory 9140 to perform information storage or processing, etc.

[0091] Input unit 9120 provides input to central processing unit 9100. Input unit 9120 may be, for example, a keypad or touch input device. Power supply 9170 provides power to electronic device 9600. Display 9160 displays images and text. Display may be, for example, an LCD display, but is not limited thereto.

[0092] The memory 9140 can be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes referred to as EPROMs. The memory 9140 can also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142 for storing application programs and function programs or processes for executing the operation of the electronic device 9600 via the central processing unit 9100.

[0093] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for the electronic device's communication functions and / or for performing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0094] The communication module 9110 is a transmitter / receiver 9110 that transmits and receives signals via the antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processing unit 9100 to provide input signals and receive output signals, which can be the same as in a conventional mobile communication terminal.

[0095] Based on different communication technologies, multiple communication modules 9110 can be configured in the same electronic device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby realizing typical telecommunications functions. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor 9130 is coupled to a central processing unit 9100, enabling on-device recording via the microphone 9132 and on-device playback of stored sound via the speaker 9131.

[0096] Embodiments of the present invention also provide a computer-readable storage medium capable of implementing all steps of the switching control method for the power consumption and power maintenance phases of a vehicle, in which the execution subject can be a server, as described in the above embodiments. The computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the switching control method for the power consumption and power maintenance phases of a vehicle as described in the above embodiments.

[0097] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0098] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0099] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0100] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0101] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method for switching control between the power consumption and power maintenance phases of a vehicle, characterized in that, include: Obtain the current percentage of charge in the vehicle's power battery; After the current battery percentage reaches the transmitter start threshold, the vehicle will be switched to engine series drive, where the engine start threshold is lower than the battery balance point percentage. The switching control method includes three control states:

1. When the current power percentage (SOC) is at full charge, it is reduced to the power retention mode start threshold; 2. The SOC is reduced from the power retention mode start threshold to the transmitter start threshold; 3. The SOC is reduced from the transmitter start threshold to the lowest SOC protection point threshold. This extends the driving time of the power battery to the aforementioned control states 1 and 2. The switching control method is used during vehicle operation. The vehicle operation phase involves a cyclical judgment process: First, the vehicle is in battery-driven mode. Then, it checks if the current state of charge (SOC) of the vehicle's power battery is greater than the engine start threshold (Threshold_2). If it is, the vehicle remains in battery-driven mode; otherwise, it enters charging mode and switches to engine-driven mode. Next, it checks if the SOC is greater than the battery hold mode start threshold (Threshold_1). If it is, the vehicle enters battery hold mode; otherwise, it returns to charging mode. Finally, it checks if the SOC is greater than the battery consumption mode shutdown threshold (Threshold_4). If it is, the vehicle returns to battery-driven mode; otherwise, it returns to battery hold mode. The order of priority is: Threshold_4 > Threshold_1 > Threshold_2 > Threshold_3. Under the series drive of the engine, if the current battery percentage is higher than the battery balance point percentage but lower than the battery hold-up mode start threshold, the series drive of the engine is maintained.

2. The switching control method for the vehicle's power consumption and power maintenance phases according to claim 1, characterized in that, Also includes: When the vehicle is powered by the battery, if the current battery percentage is lower than the battery consumption mode shutdown threshold, it will exit the battery consumption phase.

3. The switching control method for the vehicle's power consumption and power maintenance phases according to claim 1, characterized in that, Also includes: When the vehicle is powered by the battery, if the current battery percentage is lower than the battery maintenance mode activation threshold, it enters the battery maintenance phase.

4. The switching control method for the vehicle's power consumption and power maintenance phases according to claim 1, characterized in that, If the vehicle is in the initial power-on state; the switching control method further includes: Determine if the current battery percentage is lower than the preset minimum battery percentage. If it is not higher, control the vehicle to enter the power preservation mode.

5. The switching control method for the vehicle's power consumption and power maintenance phases according to claim 1, characterized in that, Also includes: Obtain information about the user's selected driving mode; The engine start threshold is determined based on the preset correspondence between driving modes and the engine start threshold, according to the driving mode information selected by the user.

6. The switching control method for the vehicle's power consumption and power maintenance phases according to claim 5, characterized in that, Also includes: Acquire power demand data at different stages under various driving modes; For each power demand data point, different engine start thresholds are set, and the pure electric range of the vehicle's power battery and the total range of the vehicle are calculated sequentially under that engine start threshold. Based on the pure electric range and total range corresponding to different engine start thresholds under each power demand data, as well as the pure electric range weight and total range weight, the comprehensive range corresponding to each engine start threshold is generated. For each driving mode, select the engine start threshold that corresponds to the highest overall range, and generate the preset correspondence based on the selected engine start threshold and the corresponding driving mode.

7. A switching control device for a vehicle's power consumption and power maintenance phases, characterized in that, include: The acquisition module obtains the current percentage of battery charge in the vehicle. The switching module switches the vehicle to engine series drive after the current battery percentage reaches the transmitter start threshold, where the engine start threshold is lower than the battery balance point percentage. The switching control device includes three control states:

1. When the current power percentage (SOC) is at full charge, it is reduced to the power retention mode start threshold; 2. The SOC is reduced from the power retention mode start threshold to the transmitter start threshold; 3. The SOC is reduced from the transmitter start threshold to the lowest SOC protection point threshold. This extends the driving time of the power battery to the aforementioned control states 1 and 2. The switching control method is used during vehicle operation. During vehicle operation, the system can cyclically determine the following: First, the vehicle is in battery-driven mode. Then, it checks if the current state of charge (SOC) of the vehicle's power battery is greater than the engine start threshold (Threshold_2). If it is, the vehicle remains in battery-driven mode; otherwise, it enters charging mode and switches to engine-driven mode. Next, it checks if the SOC is greater than the battery hold mode start threshold (Threshold_1). If it is, the vehicle enters battery hold mode; otherwise, it returns to charging mode. Finally, it checks if the SOC is greater than the battery consumption mode shutdown threshold (Threshold_4). If it is, the vehicle returns to battery-driven mode; otherwise, it returns to battery hold mode. The order of thresholds is: Threshold_4 > Threshold_1 > Threshold_2 > Threshold_3. Under the series drive of the engine, if the current battery percentage is higher than the battery balance point percentage but lower than the battery hold-up mode start threshold, the series drive of the engine is maintained.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the switching control method for the power consumption and power maintenance phases of the vehicle as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the switching control method for the power consumption and power maintenance phases of the vehicle as described in any one of claims 1 to 6.

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