A shift control method and device, vehicle and storage medium

Abstract

The application discloses a gear shifting control method and device, a vehicle and a storage medium. The method comprises the following steps: during the driving of the vehicle, if a gear shifting request is detected when the whole vehicle temperature of the vehicle is less than a preset temperature threshold, the current gear positions of a main driving mechanism and an auxiliary driving mechanism are acquired respectively; when the current gear position of the main driving mechanism and the current gear position of the auxiliary driving mechanism are both non-empty, the whole vehicle driving power of the vehicle and the system driving power of an electric driving system are acquired; when the whole vehicle driving power and the system driving power satisfy a preset condition, a power compensation value is determined; wherein the preset condition is that the absolute value of the difference between the whole vehicle driving power and the system driving power is less than a preset threshold; and the current main driving power of the main driving mechanism and the current auxiliary driving power of the auxiliary driving mechanism are adjusted based on the power compensation value to control the auxiliary driving mechanism to perform a gear shifting operation. Through the above scheme, the effect of normal speed regulation and gear shifting of the driving system in a low temperature environment can be achieved.

Description

Technical Field

[0001] This invention relates to the field of automotive drive technology, and in particular to a shift control method, device, vehicle, and storage medium. Background Technology

[0002] In recent years, new energy technologies have developed rapidly in the automotive industry, and pure electric control systems are widely used in the automotive field. Currently, electric drive systems exist in various forms, including single-drive and multi-drive systems. Compared to single-drive systems, multi-drive systems offer advantages such as higher output power, no power interruption, and higher system efficiency. However, when electric vehicles are driven in low-temperature environments, gear shifting cannot be completed due to temperature variations, affecting the user's driving experience; currently, there is no good solution. Summary of the Invention

[0003] This invention provides a shift control method, device, vehicle, and storage medium to achieve normal speed regulation and shifting of the drive system in low-temperature environments, thereby improving the user's driving experience.

[0004] According to one aspect of the present invention, a shift control method is provided, the method comprising:

[0005] During the vehicle's operation, when the overall temperature of the vehicle is lower than a preset temperature threshold, if a gear shift request is detected, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained respectively.

[0006] When both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not empty, the vehicle's total drive power and the electric drive system's system drive power are obtained.

[0007] When the vehicle drive power and the system drive power meet a preset condition, a power compensation value is determined; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold.

[0008] The current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted based on the power compensation value to control the auxiliary drive mechanism to perform a gear shifting operation.

[0009] According to another aspect of the present invention, a shift control device is provided, the device comprising:

[0010] The current gear acquisition module is used to acquire the current gear of the main drive mechanism and the auxiliary drive mechanism respectively when the vehicle temperature is lower than a preset temperature threshold during the vehicle's operation and a gear shift request is detected.

[0011] The drive power acquisition module is used to acquire the vehicle's total drive power and the electric drive system's system drive power when both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not empty.

[0012] A power compensation value determination module is used to determine a power compensation value when the vehicle drive power and the system drive power meet a preset condition; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold.

[0013] The current drive power adjustment module is used to adjust the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value, so as to control the auxiliary drive mechanism to perform a gear shifting operation.

[0014] According to another aspect of the present invention, a vehicle is provided, the vehicle comprising:

[0015] At least one processor; and

[0016] A memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the shift control method according to any embodiment of the present invention.

[0018] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the shift control method according to any embodiment of the present invention.

[0019] In this embodiment of the invention, during vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, if a shift request is detected, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained to determine the actual driving state of the vehicle in a low-temperature environment. When both the current gears of the main drive mechanism and the auxiliary drive mechanism are not empty, the overall vehicle drive power and the system drive power of the electric drive system are obtained. This allows determination of whether the remaining power after satisfying the system drive power of the electric drive system meets the additional power required for speed adjustment of the auxiliary drive mechanism. When the overall vehicle drive power and the system drive power meet a preset condition, a power compensation value is determined to redistribute the overall vehicle drive power to meet the additional power required for speed adjustment of the auxiliary drive mechanism. The preset condition is that the absolute value of the difference between the overall vehicle drive power and the system drive power is less than a preset threshold. Based on the power compensation value, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted to control the auxiliary drive mechanism to perform shifting operations. Through the technical solution of this embodiment of the invention, the effect of normal speed adjustment and shifting of the drive system in a low-temperature environment can be achieved, improving the user's driving experience.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart of a shift control method provided according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a flowchart of a shift control method provided according to Embodiment 2 of the present invention;

[0024] Figure 3 This is a flowchart illustrating a method for determining whether an electric drive system enters a power limiting mode according to Embodiment 2 of the present invention.

[0025] Figure 4 This is a schematic diagram of a shift control device according to Embodiment 3 of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a vehicle that implements the gear shifting control method of this invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Example 1

[0030] Figure 1 This is a flowchart of a gear shifting control method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of changing gears in a vehicle. The method can be executed by a gear shifting control device, which can be implemented in hardware and / or software, and can be configured in the vehicle. Figure 1 As shown, the method includes:

[0031] S110. During vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, if a gear shift request is detected, the current gear of the main drive mechanism and the auxiliary drive mechanism are obtained respectively.

[0032] Vehicle temperature refers to the temperature inside the vehicle, including the interior air temperature and the temperatures of other components such as the engine, transmission, and tires. Vehicle temperature is affected by many factors, such as ambient temperature, vehicle speed, driving mode, and usage.

[0033] Vehicle temperature affects vehicle performance. For example, when an electric vehicle with a multi-drive system operates in a low-temperature environment, the battery discharge power drops sharply to the low-temperature battery discharge power, reducing the remaining charge and consequently decreasing the power delivered to the vehicle. Under these conditions, when the driver intends to accelerate and shift gears, sending a shift request to the multi-drive system, the primary drive mechanism is in drive mode, providing the required torque. However, due to the reduced remaining charge, the vehicle cannot provide the additional power needed for the auxiliary drive mechanism to adjust its speed. Consequently, the speed difference between the auxiliary drive mechanism and the engagement gear ring cannot reach the specified value, preventing the shift from being completed and limiting the vehicle's performance.

[0034] To address the above situation, this invention provides a gear shifting control method. Specifically, during vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, the vehicle is considered to be operating in a low-temperature environment. If a gear shifting request is detected at this time, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained respectively to determine the actual driving state of the vehicle in the low-temperature environment.

[0035] S120. When both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not neutral, obtain the vehicle's total drive power and the electric drive system's system drive power.

[0036] In this embodiment of the invention, after detecting a shift request and obtaining the current gears of the main drive mechanism and the auxiliary drive mechanism, if both the current gears of the main drive mechanism and the auxiliary drive mechanism are not empty, the vehicle needs to simultaneously provide the system drive power of the electric drive system and the additional power required for speed adjustment of the auxiliary drive mechanism. At this time, by obtaining the vehicle's total drive power and the system drive power of the electric drive system, it can be determined whether the remaining power after the total vehicle drive power meets the system drive power of the electric drive system meets the additional power required for speed adjustment of the auxiliary drive mechanism.

[0037] S130. When the vehicle drive power and the system drive power meet the preset conditions, determine the power compensation value; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold.

[0038] In this embodiment of the invention, after obtaining the vehicle's overall drive power and the electric drive system's system drive power, it can be determined whether the overall drive power and the system drive power meet preset conditions. The preset condition is that the absolute value of the difference between the overall drive power and the system drive power is less than a preset threshold. It can be understood that when the overall drive power and the system drive power meet the preset conditions, the absolute value of the difference between the overall drive power and the system drive power is less than the preset threshold, indicating that the overall drive power and the system drive power are close. That is, after the overall drive power meets the system drive power of the electric drive system, the remaining power is insufficient to meet the additional power required for the speed adjustment of the auxiliary drive mechanism. At this time, the electric drive system enters a power limiting mode, and a power compensation value needs to be determined to redistribute the overall drive power to meet the additional power required for the speed adjustment of the auxiliary drive mechanism.

[0039] S140. Adjust the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value, so as to control the auxiliary drive mechanism to perform a gear shifting operation.

[0040] In this embodiment of the invention, after determining the power compensation value, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism can be adjusted based on the power compensation value. This ensures that the overall vehicle drive power, after satisfying the current main drive power of the main drive mechanism, can also satisfy the current auxiliary drive power of the auxiliary drive mechanism, i.e., satisfy the auxiliary drive power required for speed regulation, and control the auxiliary drive mechanism to perform gear shifting operations. Therefore, the drive system can achieve normal speed regulation and gear shifting in low-temperature environments, improving the user's driving experience.

[0041] In this embodiment of the invention, during vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, if a shift request is detected, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained to determine the actual driving state of the vehicle in a low-temperature environment. When both the current gears of the main drive mechanism and the auxiliary drive mechanism are not empty, the overall vehicle drive power and the system drive power of the electric drive system are obtained. This allows determination of whether the remaining power after satisfying the system drive power of the electric drive system meets the additional power required for speed adjustment of the auxiliary drive mechanism. When the overall vehicle drive power and the system drive power meet a preset condition, a power compensation value is determined to redistribute the overall vehicle drive power to meet the additional power required for speed adjustment of the auxiliary drive mechanism. The preset condition is that the absolute value of the difference between the overall vehicle drive power and the system drive power is less than a preset threshold. Based on the power compensation value, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted to control the auxiliary drive mechanism to perform shifting operations. Through the technical solution of this embodiment of the invention, the effect of normal speed adjustment and shifting of the drive system in a low-temperature environment can be achieved, improving the user's driving experience.

[0042] Example 2

[0043] Figure 2 This is a flowchart of a shift control method provided in Embodiment 2 of the present invention. The embodiments of the present invention are optimized based on the above embodiments. Solutions not described in detail in the embodiments of the present invention are described in the above embodiments. Figure 2 As shown, the method includes:

[0044] S210. During vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, if a gear shift request is detected, the current gear of the main drive mechanism and the auxiliary drive mechanism are obtained respectively.

[0045] In this embodiment of the invention, when the overall temperature of the vehicle is lower than a preset temperature threshold during vehicle operation, the vehicle is considered to be driving in a low-temperature environment. If a gear shift request is detected at this time, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained respectively to determine the actual driving state of the vehicle in the low-temperature environment.

[0046] Specifically, if a shift request is detected, the current gear positions of the main drive mechanism and the auxiliary drive mechanism are obtained, including:

[0047] If a shift request is detected, determine whether the vehicle meets the low-temperature shift control conditions;

[0048] When it is determined that the vehicle meets the low-temperature shift control conditions, the current gear of the main drive mechanism and the auxiliary drive mechanism are obtained respectively.

[0049] It is understandable that vehicle performance will be affected in low-temperature environments, such as below zero degrees Celsius. Therefore, in this embodiment of the invention, after detecting a shift request, it is necessary to first determine whether the vehicle meets the low-temperature shift control conditions. Generally, determining whether a vehicle meets the low-temperature shift conditions requires consideration of multiple factors, such as the vehicle's basic parameters, the climate conditions of the region, and the specifications and models of specific components. When it is determined that the vehicle meets the low-temperature shift control conditions, the current gears of the main drive mechanism and the auxiliary drive mechanism are then obtained to ensure driving safety in low-temperature environments.

[0050] Specifically, determining whether a vehicle meets the low-temperature shift control conditions includes:

[0051] Obtain the vehicle's battery discharge power and remaining charge;

[0052] When the battery discharge power is less than the preset power threshold and the remaining charge is less than the preset charge threshold, the vehicle's output shaft speed, the vehicle's required torque, and the vehicle's system fault status are obtained.

[0053] When the vehicle meets the conditions for entering the next gear based on the output shaft speed and the required torque of the whole vehicle, and the system fault status is non-fault status, the vehicle meets the low temperature shift control conditions.

[0054] In this embodiment of the invention, it is necessary to obtain the battery discharge power and remaining charge of the vehicle under low-temperature conditions. When the battery discharge power is less than a preset power threshold and the remaining charge is less than a preset charge threshold, it indicates that the battery discharge power and remaining charge have been affected by the low temperature. At this time, the output shaft speed, the required torque of the vehicle, and the system fault status of the vehicle are obtained. Based on the output shaft speed and the required torque of the vehicle, it is determined whether the vehicle meets the conditions for entering the next gear. Only when the vehicle meets the conditions for entering the next gear and the system status is non-faulty, it is said that the vehicle is ready to shift gears in a low-temperature environment, that is, the vehicle meets the low-temperature shift control conditions.

[0055] S220. When both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not neutral, obtain the vehicle's total drive power and the electric drive system's system drive power.

[0056] S230. When the vehicle drive power and system drive power meet the preset conditions, obtain the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism and the third oil temperature of the auxiliary drive mechanism.

[0057] The preset condition is that the absolute value of the difference between the vehicle's drive power and the system's drive power is less than a preset threshold. When the vehicle's drive power and the system's drive power meet the preset condition, the electric drive system enters a power limiting mode. In this mode, the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism are acquired, and the power compensation value is determined based on these three temperatures.

[0058] For example, Figure 3 A flowchart illustrating the method for determining when an electric drive system enters a power-limiting mode is shown. As illustrated, when a shift request is detected, and both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not neutral, and the absolute value of the difference between the vehicle's drive power and the system's drive power is less than a preset threshold, the vehicle's electric drive system enters a power-limiting mode. In this mode, the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism are acquired.

[0059] S240. Calculate the average of the first oil temperature, the second oil temperature and the third oil temperature to obtain the target oil temperature.

[0060] In this embodiment of the invention, after obtaining the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism, the power compensation value can be determined based on these three temperatures. Specifically, the average of the first, second, and third oil temperatures needs to be calculated first to obtain the target oil temperature, and then the power compensation value is determined based on the target oil temperature. Therefore, the first, second, and third oil temperatures in the application scenario can be fully utilized in the determination of the target oil temperature, improving the accuracy and rationality of the target oil temperature determination.

[0061] S250, determine the power compensation value based on the target oil temperature.

[0062] In this embodiment of the invention, after obtaining the target oil temperature, the power compensation value can be determined based on the target oil temperature. Generally, there is a certain correspondence between power and oil temperature. The target power corresponding to the target oil temperature can be obtained, and the power compensation value between the current power and the target power can be determined. Optionally, the power compensation value can be determined by interpolation based on the target oil temperature and a preset calibrated power compensation value.

[0063] Specifically, the power compensation value is determined based on the target oil temperature, including:

[0064] Obtain the pre-set correspondence table between oil temperature and power compensation value;

[0065] The power compensation value is determined based on the target oil temperature and the corresponding relationship table.

[0066] In this embodiment of the invention, a correspondence between oil temperature and power compensation value can be preset, and a corresponding correspondence table can be created. After obtaining the target oil temperature, the target oil temperature can be compared with the correspondence table to determine the power compensation value, thereby redistributing the vehicle's drive power to meet the additional power required for speed adjustment of the auxiliary drive mechanism.

[0067] S260. Adjust the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value, so as to control the auxiliary drive mechanism to perform gear shifting operation.

[0068] In this embodiment of the invention, after determining the power compensation value, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted based on the power compensation value, and the overall vehicle drive power is redistributed to meet the additional power required for the speed adjustment of the auxiliary drive mechanism, so as to control the auxiliary drive mechanism to perform gear shifting operation.

[0069] Specifically, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted based on the power compensation value, including:

[0070] The driving power of the main drive power is adjusted to the target main drive power, and the driving power of the auxiliary drive power is adjusted to the target auxiliary drive power; where the target main drive power is the difference between the current main drive power and the power compensation value, and the target auxiliary drive power is the sum of the current auxiliary drive power and the power compensation value.

[0071] In this embodiment of the invention, the target main drive power is the difference between the current main drive power and the power compensation value, and the target auxiliary drive power is the sum of the current auxiliary drive power and the power compensation value. Therefore, adjusting the main drive power to the target main drive power and the auxiliary drive power to the target auxiliary drive power involves subtracting the power compensation value from the current main drive power and adding the power compensation value to the current auxiliary drive power. It can be understood that the adjusted target auxiliary drive power can meet the additional power required for speed regulation of the auxiliary drive mechanism. This allows for normal speed regulation and gear shifting of the drive system in low-temperature environments, improving the user's driving experience.

[0072] S270: Control the main drive mechanism to torque mode and control the auxiliary drive mechanism to enter free mode for disengagement operation.

[0073] In this invention, after controlling the auxiliary drive mechanism to perform a gear shifting operation, the main drive mechanism can be controlled to be in torque mode, and the auxiliary drive mechanism can be controlled to enter free mode to perform a disengagement operation. Optionally, various methods can be used to control the auxiliary drive mechanism to enter free mode, such as manual operation mechanisms, electronic control units, control panels on the vehicle control system, etc. The specific operation methods and precautions may vary depending on the vehicle model, manufacturer, region, etc.

[0074] S280. After the auxiliary drive mechanism is disengaged, the main drive mechanism is controlled to provide the required torque for the vehicle, and the auxiliary drive mechanism is controlled to enter the speed mode to adjust the vehicle speed based on the vehicle power.

[0075] In this embodiment of the invention, after the auxiliary drive mechanism disengages, the main drive mechanism can be controlled to provide the required torque for the vehicle, and the auxiliary drive mechanism can be controlled to enter a speed mode, running at a preset speed. This allows for speed adjustment based on the vehicle's overall power, improving energy utilization efficiency. It is important to note that when controlling the auxiliary drive mechanism, appropriate modes and parameters should be selected to avoid excessive noise, vibration, or energy consumption, and to ensure the equipment is in a safe and efficient working state.

[0076] In this embodiment of the invention, during vehicle operation, when the overall vehicle temperature is lower than a preset temperature threshold, if a gear shift request is detected, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained to determine the actual driving state of the vehicle in a low-temperature environment. When both the current gears of the main drive mechanism and the auxiliary drive mechanism are not empty, the overall vehicle drive power and the system drive power of the electric drive system are obtained. This allows determination of whether the remaining power after the overall vehicle drive power meets the system drive power of the electric drive system meets the additional power required for speed adjustment of the auxiliary drive mechanism. When the overall vehicle drive power and the system drive power meet preset conditions, the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism are obtained. The first, second, and third oil temperatures are then calculated. The average value is used to obtain the target oil temperature. This allows for the full utilization of the first, second, and third oil temperatures in the application scenario during the target oil temperature determination process, improving the accuracy and rationality of the target oil temperature determination. A power compensation value is determined based on the target oil temperature, thereby redistributing the vehicle's drive power to meet the additional power required for the auxiliary drive mechanism's speed adjustment. Based on the power compensation value, the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted to control the auxiliary drive mechanism's gear shifting operation. The main drive mechanism is controlled to be in torque mode, and the auxiliary drive mechanism is controlled to enter free mode for disengagement. After the auxiliary drive mechanism disengages, the main drive mechanism is controlled to provide the vehicle with the required torque, and the auxiliary drive mechanism is controlled to enter speed mode to adjust the vehicle's speed based on the overall vehicle power. Through the technical solution of this invention, the normal speed adjustment and gear shifting effect of the drive system can be achieved in low-temperature environments, improving the user's driving experience and increasing energy utilization efficiency.

[0077] Example 3

[0078] Figure 4 This is a schematic diagram of a shift control device provided in Embodiment 3 of the present invention. Figure 4 As shown, the device includes:

[0079] The current gear acquisition module 310 is used to acquire the current gear of the main drive mechanism and the auxiliary drive mechanism respectively when the vehicle temperature is lower than a preset temperature threshold during the vehicle's operation and a gear shift request is detected.

[0080] The drive power acquisition module 320 is used to acquire the vehicle's total drive power and the electric drive system's system drive power when both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not empty.

[0081] The power compensation value determination module 330 is used to determine a power compensation value when the vehicle drive power and the system drive power meet a preset condition; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold.

[0082] The current drive power adjustment module 340 is used to adjust the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value, so as to control the auxiliary drive mechanism to perform a gear shifting operation.

[0083] In this embodiment of the invention, the power compensation value determination module 330 includes:

[0084] The current oil temperature acquisition unit is used to acquire the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism when the vehicle drive power and the system drive power meet preset conditions.

[0085] The target oil temperature determination unit is used to calculate the average of the first oil temperature, the second oil temperature and the third oil temperature to obtain the target oil temperature;

[0086] A power compensation value determination unit is used to determine a power compensation value based on the target oil temperature.

[0087] Optionally, the power compensation value determination unit includes:

[0088] The correspondence table acquisition subunit is used to obtain the pre-set correspondence table between oil temperature and power compensation value;

[0089] The power compensation value determination subunit is used to determine the power compensation value based on the target oil temperature and the corresponding relationship table.

[0090] In this embodiment of the invention, the current drive power adjustment module 340 is specifically used for:

[0091] The driving power of the main drive power is adjusted to the target main drive power, and the driving power of the auxiliary drive power is adjusted to the target auxiliary drive power; wherein, the target main drive power is the difference between the current main drive power and the power compensation value, and the target auxiliary drive power is the sum of the current auxiliary drive power and the power compensation value.

[0092] In this embodiment of the invention, the current gear acquisition module 310 includes:

[0093] The low-temperature shift control condition determination unit is used to determine whether the vehicle meets the low-temperature shift control conditions if a shift request is detected.

[0094] The current gear acquisition unit is used to acquire the current gear of the main drive mechanism and the auxiliary drive mechanism respectively when it is determined that the vehicle meets the low temperature shift control conditions.

[0095] Optionally, the low-temperature shift control condition judgment unit is specifically used for:

[0096] Obtain the battery discharge power and remaining charge of the vehicle;

[0097] When the battery discharge power is less than a preset power threshold and the remaining power is less than a preset power threshold, the output shaft speed of the vehicle, the required torque of the vehicle, and the system fault status of the vehicle are obtained.

[0098] When the vehicle meets the conditions for entering the next gear based on the output shaft speed and the required torque of the vehicle, and the system fault state is a non-fault state, the vehicle meets the low-temperature shift control conditions.

[0099] Optionally, after controlling the auxiliary drive mechanism to perform a gear shifting operation, the device further includes:

[0100] The disengagement operation module is used to control the main drive mechanism to be in torque mode and to control the auxiliary drive mechanism to enter free mode to perform disengagement operation;

[0101] The speed adjustment module is used to control the main drive mechanism to provide the vehicle with the required torque after the auxiliary drive mechanism is disengaged, and to control the auxiliary drive mechanism to enter the speed mode so as to adjust the speed of the vehicle based on the vehicle power.

[0102] The shift control device provided in the embodiments of the present invention can execute the shift control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0103] Example 4

[0104] Figure 5 A schematic diagram of a vehicle 10, which can be used to implement embodiments of the present invention, is shown. The vehicle is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The vehicle can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0105] like Figure 5As shown, vehicle 10 includes at least one processor 11 and a memory, such as read-only memory (ROM) 12 and random access memory (RAM) 13, communicatively connected to at least one processor 11. The memory stores computer programs executable by at least one processor. Processor 11 can perform various appropriate actions and processes based on the computer program stored in ROM 12 or loaded from storage unit 18 into RAM 13. RAM 13 can also store various programs and data required for the operation of vehicle 10. Processor 11, ROM 12, and RAM 13 are interconnected via bus 14. Input / output (I / O) interface 15 is also connected to bus 14.

[0106] Multiple components in vehicle 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows vehicle 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0107] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as shift control methods.

[0108] In some embodiments, the shift control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on vehicle 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the shift control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the shift control method by any other suitable means (e.g., by means of firmware).

[0109] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0110] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0111] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0112] To provide interaction with the user, the systems and technologies described herein can be implemented in a vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the vehicle. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0113] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0114] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0115] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0116] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A gear shifting control method, characterized in that, Applied to a vehicle, wherein the vehicle's electric drive system includes a main drive mechanism and an auxiliary drive mechanism, the method includes: During the vehicle's operation, when the overall temperature of the vehicle is lower than a preset temperature threshold, if a gear shift request is detected, the current gears of the main drive mechanism and the auxiliary drive mechanism are obtained respectively. When both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not empty, the vehicle's total drive power and the electric drive system's system drive power are obtained. When the vehicle drive power and the system drive power meet a preset condition, a power compensation value is determined; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold. The current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism are adjusted based on the power compensation value to control the auxiliary drive mechanism to perform a gear shifting operation. When the vehicle drive power and the system drive power meet preset conditions, a power compensation value is determined, including: When the vehicle drive power and the system drive power meet the preset conditions, the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism are obtained. Calculate the average of the first oil temperature, the second oil temperature, and the third oil temperature to obtain the target oil temperature; The power compensation value is determined based on the target oil temperature; Adjusting the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value includes: The driving power of the main drive power is adjusted to the target main drive power, and the driving power of the auxiliary drive power is adjusted to the target auxiliary drive power; wherein, the target main drive power is the difference between the current main drive power and the power compensation value, and the target auxiliary drive power is the sum of the current auxiliary drive power and the power compensation value; If a shift request is detected, the current gear position of the main drive mechanism and the auxiliary drive mechanism are obtained respectively, including: If a shift request is detected, determine whether the vehicle meets the low-temperature shift control conditions; When it is determined that the vehicle meets the low-temperature shift control conditions, the current gear position of the main drive mechanism and the auxiliary drive mechanism are obtained respectively.

2. The method according to claim 1, characterized in that, Determining the power compensation value based on the target oil temperature includes: Obtain the pre-set correspondence table between oil temperature and power compensation value; The power compensation value is determined based on the target oil temperature and the corresponding relationship table.

3. The method according to claim 1, characterized in that, Determining that the vehicle meets the low-temperature shift control conditions includes: Obtain the battery discharge power and remaining charge of the vehicle; When the battery discharge power is less than a preset power threshold and the remaining power is less than a preset power threshold, the output shaft speed of the vehicle, the required torque of the vehicle, and the system fault status of the vehicle are obtained. When the vehicle meets the conditions for entering the next gear based on the output shaft speed and the required torque of the vehicle, and the system fault state is a non-fault state, the vehicle meets the low-temperature shift control conditions.

4. The method according to any one of claims 1-3, characterized in that, After controlling the auxiliary drive mechanism to perform the gear shifting operation, the following is also included: The main drive mechanism is controlled to be in torque mode, and the auxiliary drive mechanism is controlled to enter free mode to perform a disengagement operation; Once the auxiliary drive mechanism disengages, it controls the main drive mechanism to provide the required torque for the vehicle and controls the auxiliary drive mechanism to enter a speed mode to adjust the vehicle speed based on the vehicle's power.

5. A gear shifting control device, characterized in that, include: The current gear acquisition module is used to acquire the current gear of the main drive mechanism and the auxiliary drive mechanism respectively when the vehicle temperature is lower than a preset temperature threshold during vehicle operation and a gear shift request is detected. The drive power acquisition module is used to acquire the vehicle's total drive power and the electric drive system's system drive power when both the current gear of the main drive mechanism and the current gear of the auxiliary drive mechanism are not empty. A power compensation value determination module is used to determine a power compensation value when the vehicle drive power and the system drive power meet a preset condition; wherein, the preset condition is that the absolute value of the difference between the vehicle drive power and the system drive power is less than a preset threshold. The current drive power adjustment module is used to adjust the current main drive power of the main drive mechanism and the current auxiliary drive power of the auxiliary drive mechanism based on the power compensation value, so as to control the auxiliary drive mechanism to perform a gear shifting operation. The power compensation value determination module includes: The current oil temperature acquisition unit is used to acquire the first oil temperature of the electric drive system, the second oil temperature of the main drive mechanism, and the third oil temperature of the auxiliary drive mechanism when the vehicle drive power and the system drive power meet preset conditions. The target oil temperature determination unit is used to calculate the average of the first oil temperature, the second oil temperature and the third oil temperature to obtain the target oil temperature; A power compensation value determination unit is used to determine a power compensation value based on the target oil temperature. The current drive power adjustment module is specifically used for: The driving power of the main drive power is adjusted to the target main drive power, and the driving power of the auxiliary drive power is adjusted to the target auxiliary drive power; wherein, the target main drive power is the difference between the current main drive power and the power compensation value, and the target auxiliary drive power is the sum of the current auxiliary drive power and the power compensation value; The current gear acquisition module includes: The low-temperature shift control condition determination unit is used to determine whether the vehicle meets the low-temperature shift control conditions if a shift request is detected. The current gear acquisition unit is used to acquire the current gear of the main drive mechanism and the auxiliary drive mechanism respectively when it is determined that the vehicle meets the low temperature shift control conditions.

6. A vehicle, characterized in that, The vehicles include: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the shift control method according to any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the shift control method according to any one of claims 1-4.

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