Vehicle drive control method, device, apparatus, and storage medium

Abstract

The application discloses a vehicle driving control method, device, equipment and storage medium, and the method comprises the following steps: in the process that the range-extending vehicle runs in the pure electric mode, if the range-extending vehicle has a power supplement demand, the sustained discharge power of the power battery is determined; the current actual output power of the driving motor is acquired, and the time length that the current actual output power is greater than the sustained discharge power is determined; when the time length is greater than a preset time length threshold, the range extender is controlled to supplement the power of the driving motor. In the process that the range-extending vehicle runs in the pure electric mode, if the power battery cannot output sufficient power to the driving motor, the range extender is controlled to supplement the power of the driving motor, so that the driving motor outputs the torque to drive the vehicle to run, the technical problem that the range-extending vehicle is insufficient in power in the pure electric mode is solved, and the driving experience of the user is improved.

Description

Technical Field

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

[0002] Currently, the market for range-extended vehicles is expanding, and customers are placing higher demands on them. They require sufficient space, adequate carrying capacity, and excellent power and comfort. When the battery has enough charge, customers typically choose pure electric mode. However, if a user continuously demands high power in pure electric mode, the vehicle may experience insufficient power due to the output characteristics of the battery, thus failing to meet the user's driving needs. Summary of the Invention

[0003] The main objective of this invention is to provide a vehicle drive control method, device, equipment, and storage medium, which aims to solve the technical problem of insufficient vehicle power when range-extended vehicles are driven in pure electric mode in the prior art.

[0004] To achieve the above objectives, the present invention provides a vehicle drive control method, the method comprising the following steps:

[0005] If the range-extended vehicle needs power replenishment while driving in pure electric mode, the continuous discharge power of the power battery is determined.

[0006] Obtain the current actual output power of the drive motor, and determine the duration for which the current actual output power is continuously greater than the continuous discharge power;

[0007] When the duration exceeds a preset duration threshold, the range extender is controlled to supplement the power of the drive motor.

[0008] Optionally, if the range-extended vehicle has a power supplementation requirement, it includes:

[0009] Obtain the driving data of the range-extended vehicle;

[0010] When the driving data meets the preset power replenishment conditions, it is determined whether the actual output power of the drive motor is greater than the preset power threshold, wherein the preset power threshold is greater than the continuous discharge power of the power battery and less than the pulse discharge power of the power battery.

[0011] If so, it is determined that the range-extended vehicle has a power replenishment requirement.

[0012] Optionally, the driving data includes at least one of vehicle load, throttle opening, and vehicle acceleration;

[0013] Before determining whether the actual output power of the drive motor is greater than a preset power threshold when the driving data meets the preset power supplementation conditions, the process includes:

[0014] When the total vehicle load is greater than a preset load threshold, and / or the throttle opening is greater than a preset opening threshold within a preset judgment time, and / or the vehicle acceleration is greater than a preset acceleration, the driving data is determined to meet the preset power supplementation conditions.

[0015] Optionally, determining the continuous discharge power of the power battery includes:

[0016] Obtain the current remaining charge, cell temperature, and allowable discharge current of the power battery;

[0017] The continuous discharge power of the power battery is obtained by looking up a table based on the current remaining power, the cell temperature, and the allowable discharge current.

[0018] Optionally, after controlling the range extender to supplement the power of the drive motor when the duration exceeds a preset duration threshold, the method further includes:

[0019] If the range-extended vehicle meets the power replenishment withdrawal condition, the range extender will be controlled to stop replenishing power to the drive motor after a preset calibration period.

[0020] Optionally, before controlling the range extender to stop supplementing power to the drive motor after a preset calibration period if the range-extended vehicle meets the power supplementation withdrawal condition, the method further includes:

[0021] If the extended-range vehicle remains out of drive mode for a preset duration, and / or the current actual output power is less than a second preset power threshold, the extended-range vehicle is determined to meet the power replenishment exit condition.

[0022] Optionally, the preset duration threshold is less than the duration during which the power battery maintains the pulse discharge power.

[0023] Furthermore, to achieve the above objectives, the present invention also proposes a vehicle drive control device, the device comprising:

[0024] The determination module is used to determine the continuous discharge power of the power battery if the range-extended vehicle has a power replenishment requirement while it is driving in pure electric mode.

[0025] The acquisition module is used to acquire the current actual output power of the drive motor and determine the duration for which the current actual output power is continuously greater than the continuous discharge power;

[0026] The control module is used to control the range extender to supplement the power of the drive motor when the duration exceeds a preset duration threshold.

[0027] Furthermore, to achieve the above objectives, the present invention also proposes a vehicle drive control device, the device comprising: a memory, a processor, and a vehicle drive control program stored in the memory and executable on the processor, the vehicle drive control program being configured to implement the steps of the vehicle drive control method as described above.

[0028] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a vehicle drive control program, which, when executed by a processor, implements the steps of the vehicle drive control method described above.

[0029] This invention addresses the issue of insufficient power in range-extended vehicles operating in pure electric mode. If the vehicle requires additional power, it determines the continuous discharge power of the battery, obtains the current actual output power of the drive motor, and determines the duration for which this output power remains greater than the continuous discharge power. When this duration exceeds a preset threshold, the range extender is controlled to supplement the drive motor's power. This invention solves the technical problem of insufficient power in pure electric mode for range-extended vehicles, improving the user's driving experience. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the vehicle drive control device in the hardware operating environment involved in the embodiments of the present invention;

[0031] Figure 2 This is a flowchart illustrating an embodiment of the vehicle drive control method of the present invention;

[0032] Figure 3 This is a schematic diagram of a conventional scheme for a range-extended vehicle accelerating at full throttle under heavy load, according to an embodiment of the vehicle drive control method of the present invention.

[0033] Figure 4 This is a schematic diagram of a range-extended vehicle accelerating at full throttle under heavy load using the method of this application embodiment in one embodiment of the vehicle drive control method of the present invention;

[0034] Figure 5 This is a schematic flowchart of another embodiment of the vehicle drive control method of the present invention;

[0035] Figure 6 This is a structural block diagram of the first embodiment of the vehicle drive control device of the present invention.

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0038] Reference Figure 1 , Figure 1 This is a schematic diagram of the vehicle drive control device structure in the hardware operating environment involved in the embodiments of the present invention.

[0039] like Figure 1 As shown, the vehicle drive control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0040] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the vehicle drive control device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0041] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a vehicle drive control program.

[0042] exist Figure 1In the vehicle drive control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 can be set in the vehicle drive control device. The vehicle drive control device calls the vehicle drive control program stored in the memory 1005 through the processor 1001 and executes the vehicle drive control method provided in the embodiment of the present invention.

[0043] This invention provides a vehicle drive control method, referring to... Figure 2 , Figure 2 This is a flowchart illustrating an embodiment of the vehicle drive control method of the present invention.

[0044] In this embodiment, the vehicle drive control method includes the following steps:

[0045] Step S10: If the range-extended vehicle has a power replenishment requirement while driving in pure electric mode, the continuous discharge power of the power battery is determined.

[0046] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a vehicle controller, or an electronic device or vehicle drive control device capable of performing the above functions. The following uses a vehicle controller as an example to illustrate this embodiment and the subsequent embodiments.

[0047] In this embodiment, the range-extended vehicle includes range-extended light trucks, range-extended heavy trucks, range-extended cars, or other range-extended vehicles; this embodiment does not impose any limitations on these categories.

[0048] It is understandable that the power replenishment requirement can be the requirement for the range extender to output power to the drive motor; the continuous discharge power can be the power that the power battery can stably and continuously output to the drive motor; the continuous discharge power is determined by the characteristics of the power battery, and can be determined according to the battery parameters of the power battery.

[0049] It should be understood that the power supplementation requirement can be determined based on the driving conditions of the range-extended vehicle. For example, the driving conditions include at least one of the following conditions: the range-extended vehicle is driving under high load conditions, the acceleration of the range-extended vehicle is greater than the preset acceleration within the calibration period, etc. This embodiment does not impose any limitations on these conditions.

[0050] Step S20: Obtain the current actual output power of the drive motor and determine the duration for which the current actual output power is continuously greater than the continuous discharge power.

[0051] It should be noted that, due to the limitations of the power battery's output characteristics, the battery management system will first control the power battery to output power in pulses, and then switch to continuous discharge power output after the pulse discharge power output has been used for a certain duration.

[0052] It is understood that the current actual output power can be the power output by the drive motor used to drive the vehicle; timing can be started when the current actual output power is greater than the continuous discharge power, thereby determining the duration for which the current actual output power is greater than the continuous discharge power; in addition, if the current actual output power is less than the continuous discharge power during the timing process, the timing can be terminated, or the timing can be terminated after the current actual output power is less than the continuous discharge power for a certain period of time. This embodiment does not impose any restrictions here.

[0053] Step S30: When the duration exceeds a preset duration threshold, control the range extender to supplement the power of the drive motor.

[0054] It is understandable that the preset duration threshold can be a pre-set duration threshold used to determine whether to control the start of the range extender. The preset duration threshold can be determined based on the pulse discharge power duration of the power battery. The pulse discharge power duration can be the duration of the power battery outputting pulse discharge power. For example, the battery parameters of the power battery are obtained, the pulse discharge power duration is determined based on the battery parameters, and the preset duration threshold is determined based on the pulse discharge power duration.

[0055] It should be understood that when the duration for which the actual output power is continuously greater than the continuous discharge power exceeds a preset duration threshold, it can be determined that the power battery cannot meet the power demand of the drive motor. At this time, the range extender is activated to compensate the drive motor for power.

[0056] In this embodiment, for example, the range-extended vehicle is a range-extended light truck. The range-extended light truck operates in pure electric mode. If the user suddenly accelerates at a certain moment, and the vehicle's acceleration is greater than a preset acceleration, it is determined that the range-extended vehicle has a power supplementation requirement. The continuous discharge power of the power battery is determined based on the battery parameters, and the duration for which the current actual output power is continuously greater than the continuous discharge power is determined based on the timing duration. When this duration is greater than a preset duration threshold, it is determined that the continuous discharge power of the power battery cannot meet the user's acceleration requirement. The supplementary power is determined based on the current actual power requirement and the continuous discharge power. Based on the supplementary power, the range extender is controlled to generate electricity at a nearby power point to supplement the power of the drive motor, so that the drive torque output by the drive motor meets the power requirements of the entire vehicle, thereby meeting the user's acceleration requirement.

[0057] Furthermore, since the power battery can output pulsed discharge power for a certain duration, if the range extender is started when the current actual output power is greater than the continuous discharge power, the energy consumption of the vehicle will increase. If the range extender is started after the output of the power battery switches to continuous discharge power, the power demand of the whole vehicle cannot be met during the switching period. In order to meet the power demand of the whole vehicle while reducing the energy consumption of the vehicle, the preset duration threshold is less than the duration of the power battery in pulsed discharge power.

[0058] It is understandable that the holding time can be the duration during which the power battery continuously outputs pulsed discharge power. Setting a preset time threshold that is less than this holding time allows the range extender to supplement the drive motor with power before the power battery switches to continuous discharge power output, so as to meet the power demand of the vehicle. Specifically, a switching coefficient can be determined, and the holding time multiplied by the switching coefficient is used as the preset time threshold, where the switching coefficient is a number greater than 0 and less than 1.

[0059] In this embodiment of the application, for example: the power battery maintains the pulse discharge power for a duration of t1, the pulse discharge power of the power battery is P1, the continuous discharge power is P2, the current actual output power of the drive motor is P0, and the switching coefficient is 0.9. Then the preset duration threshold is 0.9t1. When the current actual output power is greater than the continuous discharge power, the timing is started. When the duration is greater than 0.9t1, the range extender is controlled to start. The supplementary power output by the range extender to the drive motor is determined to be P3 = P0 - P2. The power generation point of the range extender is determined according to P3, and the range extender is controlled to supplement the power of the drive motor with the power generation point.

[0060] In this embodiment, when a range-extended vehicle is operating in pure electric mode, if the vehicle requires additional power, the continuous discharge power of the power battery is determined; the current actual output power of the drive motor is obtained, and the duration for which the current actual output power is continuously greater than the continuous discharge power is determined; when the duration exceeds a preset threshold, the range extender is controlled to supplement the power of the drive motor. This embodiment, when a range-extended vehicle is operating in pure electric mode, if the vehicle requires additional power, determines that the current actual output power of the drive motor is continuously greater than the continuous discharge power of the power battery. If this duration exceeds a preset threshold, it indicates that the power battery's output capacity is limited and insufficient power can be supplied to the drive motor. In this case, the range extender is controlled to supplement the power of the drive motor so that the drive motor outputs torque to drive the vehicle. This solves the technical problem of insufficient power in range-extended vehicles in pure electric mode and improves the user's driving experience.

[0061] In some embodiments, the step of determining if the range-extended vehicle has a power replenishment requirement includes: acquiring driving data of the range-extended vehicle; when the driving data meets preset power replenishment conditions, determining whether the actual output power of the drive motor is greater than a preset power threshold, wherein the preset power threshold is greater than the continuous discharge power of the power battery and less than the pulse discharge power of the power battery; if so, determining that the range-extended vehicle has a power replenishment requirement.

[0062] It is understandable that the preset power replenishment condition can be a pre-set condition indicating whether the drive motor has a power replenishment requirement; the preset power threshold can be a power threshold determined based on the pulse discharge power and continuous discharge power of the power battery.

[0063] In this embodiment of the application, during the process of the range-extended vehicle driving in pure electric mode, the vehicle's driving data is acquired. When the driving data meets the preset power supplementation conditions, it is initially determined that the range-extended vehicle has a power supplementation requirement. Then, it is further determined whether the current actual output power of the drive motor is greater than the preset power threshold. If so, it is finally determined that the range-extended vehicle has a power supplementation requirement; otherwise, it is determined that the range-extended vehicle does not have a power supplementation requirement.

[0064] Furthermore, to prevent the range extender from starting when there is no power replenishment requirement, thereby affecting the user's driving experience, the driving data includes at least one of the vehicle load, throttle opening, and vehicle acceleration; before determining whether the actual output power of the drive motor is greater than a preset power threshold when the driving data meets the preset power replenishment conditions, the method includes: determining that the driving data meets the preset power replenishment conditions when the vehicle load is greater than a preset load threshold, and / or the throttle opening is greater than a preset opening threshold within a preset determination time, and / or the vehicle acceleration is greater than a preset acceleration.

[0065] It is understood that a preset load threshold can be set based on a specific scenario, such as according to vehicle type, vehicle usage scenario, etc.; the preset judgment time, preset opening threshold and preset acceleration can be set according to a specific scenario, and this embodiment does not impose any restrictions here.

[0066] In this embodiment of the application, for example, the vehicle controller determines the following conditions: (1) the vehicle load is greater than the preset load threshold; (2) the throttle opening is greater than 98% within 20 seconds; (3) the vehicle acceleration is greater than the acceleration threshold within 20 seconds; if any of the above conditions are met, the driving data is determined to meet the preset power supplementation conditions, and the vehicle controller continues to determine whether the current actual output power is greater than the preset power threshold. If so, the range-extended vehicle is determined to have a power supplementation requirement.

[0067] One example of how range-extended vehicles accelerate at full throttle under heavy load is used to illustrate this approach. Figure 3A schematic diagram of a traditional method for accelerating a range-extended vehicle under heavy load at full throttle. Figure 4 This is a schematic diagram illustrating the acceleration of a range-extended vehicle under heavy load and full throttle using the method described in this application; assuming the user desires a vehicle speed of 90 km / h and the pulse discharge power of the power battery is 160 kW, refer to... Figure 3 In traditional solutions, the power battery outputs pulsed discharge power for a certain period before switching to continuous discharge power. This decrease in battery output power leads to a drop in vehicle speed, resulting in a poor driving experience. (Refer to...) Figure 4 Using the method proposed in the embodiments of this application, the power battery first outputs peak discharge power, and the range extender is controlled to start before the power battery switches to continuous discharge power output, which can ensure that the vehicle speed is maintained at 90km / h.

[0068] This embodiment acquires the driving data of the range-extended vehicle; when the driving data meets the preset power replenishment conditions, it determines whether the actual output power of the drive motor is greater than a preset power threshold, which is greater than the continuous discharge power of the power battery and less than the pulse discharge power of the power battery; if so, it determines that the range-extended vehicle has a power replenishment requirement. This embodiment first determines whether the driving data meets the preset power replenishment conditions; if so, it continues to determine whether the actual output power of the drive motor is greater than the preset power threshold; if so, it determines that there is a power replenishment requirement, which can improve the accuracy of the power replenishment requirement determination, thereby preventing subsequent erroneous control of the range extender to start and improving the user's driving experience.

[0069] In some embodiments, determining the continuous discharge power of the power battery includes: acquiring the current remaining charge, cell temperature, and allowable discharge current of the power battery; and obtaining the continuous discharge power of the power battery by looking up a table based on the current remaining charge, the cell temperature, and the allowable discharge current.

[0070] Understandably, the correspondence between the remaining power capacity, cell temperature, and allowable discharge current of the power battery and the continuous discharge power of the power battery can be calibrated in advance to obtain a correspondence table. The corresponding continuous discharge power can then be found in the correspondence table based on the current remaining power capacity, cell temperature, and allowable discharge current of the power battery.

[0071] This embodiment obtains the current remaining charge, cell temperature, and allowable discharge current of the power battery; based on the current remaining charge, cell temperature, and allowable discharge current, the continuous discharge power of the power battery is obtained by looking up a table. This embodiment improves the accuracy of determining the continuous discharge power by looking up the table based on the current remaining charge, cell temperature, and allowable discharge current of the power battery, thereby improving the accuracy of the range extender start-up control.

[0072] In some embodiments, refer to Figure 5 After step S30, the method further includes:

[0073] Step S40: If the range-extended vehicle meets the power replenishment exit condition, then after a preset calibration time, control the range extender to stop replenishing power to the drive motor.

[0074] It is understood that the power replenishment exit condition can be a pre-set condition for controlling the range extender to stop replenishing power to the drive motor; the preset calibration duration can be set according to the specific scenario, such as setting the preset calibration duration to 3 seconds, 5 seconds, 10 seconds, etc., which is not limited in this embodiment.

[0075] In this embodiment, the vehicle controller determines whether the range-extended vehicle meets the power replenishment exit condition. If so, it starts timing and controls the range extender to stop replenishing power to the drive motor when the timing duration is greater than or equal to the preset calibration duration.

[0076] Furthermore, in order to accurately determine whether the range-extended vehicle meets the power supplement exit condition, before step S40, the method further includes: determining that the range-extended vehicle meets the power supplement exit condition when the duration of the range-extended vehicle exiting the drive mode is a preset duration and / or when the current actual output power is less than a second preset power threshold.

[0077] It is understandable that the second preset power threshold can be determined based on the preset power threshold, for example, by multiplying the preset power threshold by a coefficient greater than 0 and less than 1 to obtain the second preset power threshold.

[0078] In this embodiment of the application, for example, the preset power threshold is P4. During the process of the vehicle controller controlling the range extender to supplement the power of the drive motor, the following conditions are determined: (1) the range extender vehicle exits the drive mode and continues for a preset time; (2) the current actual output power is less than 0.8P4 and continues for a preset time. When the range extender vehicle meets at least one of the above conditions, the vehicle controller determines that the range extender vehicle meets the power supplement exit condition, and the vehicle controller controls the range extender to stop supplementing the power of the drive motor after a preset calibration time.

[0079] Because batteries from different manufacturers have different inconsistencies, inaccurate battery remaining power may lead to undervoltage of individual cells, which may affect the overall vehicle power performance. When the range-extended vehicle is driving in pure electric mode, the vehicle controller will continuously monitor the battery remaining power and the voltage of individual cells. When the battery remaining power is less than the preset power value and the voltage of individual cells is less than or equal to the preset voltage value within a preset time, the range extender will be controlled to generate electricity at the set power to improve the overall vehicle power performance.

[0080] In this embodiment, if the range-extended vehicle meets the power replenishment withdrawal condition, the range extender is controlled to stop replenishing power to the drive motor after a preset calibration period. This embodiment avoids the problem of failing to meet the vehicle's power requirements due to prematurely controlling the range extender to withdraw.

[0081] Furthermore, embodiments of the present invention also propose a storage medium storing a vehicle drive control program, wherein the vehicle drive control program, when executed by a processor, implements the steps of the vehicle drive control method described above.

[0082] Reference Figure 6 , Figure 6 This is a structural block diagram of the first embodiment of the vehicle drive control device of the present invention.

[0083] like Figure 6 As shown, the vehicle drive control device proposed in this embodiment of the invention includes:

[0084] The determination module 10 is used to determine the continuous discharge power of the power battery if the range-extended vehicle has a power replenishment requirement while it is driving in pure electric mode.

[0085] The acquisition module 20 is used to acquire the current actual output power of the drive motor and determine the duration for which the current actual output power is continuously greater than the continuous discharge power;

[0086] The control module 30 is used to control the range extender to supplement the power of the drive motor when the duration exceeds a preset duration threshold.

[0087] Furthermore, the preset duration threshold is less than the duration during which the power battery maintains the pulse discharge power.

[0088] In this embodiment, when a range-extended vehicle is operating in pure electric mode, if the vehicle requires additional power, the continuous discharge power of the power battery is determined; the current actual output power of the drive motor is obtained, and the duration for which the current actual output power is continuously greater than the continuous discharge power is determined; when the duration exceeds a preset threshold, the range extender is controlled to supplement the power of the drive motor. This embodiment, when a range-extended vehicle is operating in pure electric mode, if the vehicle requires additional power, determines that the current actual output power of the drive motor is continuously greater than the continuous discharge power of the power battery. If this duration exceeds a preset threshold, it indicates that the power battery's output capacity is limited and insufficient power can be supplied to the drive motor. In this case, the range extender is controlled to supplement the power of the drive motor so that the drive motor outputs torque to drive the vehicle. This solves the technical problem of insufficient power in range-extended vehicles in pure electric mode and improves the user's driving experience.

[0089] Based on the first embodiment of the vehicle drive control device of the present invention described above, a second embodiment of the vehicle drive control device of the present invention is proposed.

[0090] In this embodiment, the determining module 10 is further configured to acquire the driving data of the range-extended vehicle; when the driving data meets the preset power replenishment conditions, determine whether the actual output power of the drive motor is greater than the preset power threshold, wherein the preset power threshold is greater than the continuous discharge power of the power battery and less than the pulse discharge power of the power battery; if so, determine that the range-extended vehicle has a power replenishment requirement.

[0091] The determining module 10 is further configured to determine that the driving data meets the preset power supplementation conditions when the total vehicle load is greater than a preset load threshold, and / or the throttle opening is greater than a preset opening threshold within a preset judgment time, and / or the vehicle acceleration is greater than a preset acceleration. The driving data includes at least one of the total vehicle load, throttle opening and vehicle acceleration.

[0092] The determining module 10 is further configured to acquire the current remaining power, cell temperature and allowable discharge current of the power battery; and to obtain the continuous discharge power of the power battery by looking up a table based on the current remaining power, cell temperature and allowable discharge current.

[0093] The control module 30 is further configured to, if the range-extended vehicle meets the power replenishment exit condition, control the range extender to stop replenishing power to the drive motor after a preset calibration period.

[0094] The control module 30 is further configured to determine that the range-extended vehicle meets the power replenishment exit condition when the duration of the range-extended vehicle exiting the drive mode is continuously preset for a preset duration, and / or when the current actual output power is less than a second preset power threshold.

[0095] Other embodiments or specific implementations of the vehicle drive control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0096] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0097] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0098] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0099] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A vehicle drive control method characterized by comprising: The method comprises: during the process that the extended-range vehicle travels in the pure electric mode, if the extended-range vehicle has a power supplement demand, determining a continuous discharge power of the power battery; acquiring a current actual output power of the drive motor, and determining a time length during which the current actual output power continuously is greater than the continuous discharge power; when the time length is greater than a preset time length threshold, controlling the range extender to supplement power for the drive motor.

2. The method of claim 1, wherein, if the extended-range vehicle has a power supplement demand, the method comprises: acquiring travel data of the extended-range vehicle; when the travel data meets a preset power supplement condition, determining whether an actual output power of the drive motor is greater than a preset power threshold, the preset power threshold being greater than the continuous discharge power of the power battery and less than a pulse discharge power of the power battery; if yes, determining that the extended-range vehicle has a power supplement demand.

3. The method of claim 2, wherein, the travel data comprises at least one of vehicle load, accelerator opening degree and vehicle acceleration; before the step of determining whether the actual output power of the drive motor is greater than the preset power threshold when the travel data meets the preset power supplement condition, the method comprises: when the vehicle load is greater than a preset load threshold, and / or the accelerator opening degree is greater than a preset opening degree threshold within a preset judgment time length, and / or the vehicle acceleration is greater than a preset acceleration, determining that the travel data meets the preset power supplement condition.

4. The method according to any one of claims 1 to 3, characterized in that, the step of determining the continuous discharge power of the power battery comprises: acquiring a current residual capacity, a cell temperature and an allowable discharge current of the power battery; according to the current residual capacity, the cell temperature and the allowable discharge current, obtaining the continuous discharge power of the power battery through table lookup.

5. The method according to any one of claims 1 to 3, wherein after the step of, when the time length is greater than the preset time length threshold, controlling the range extender to supplement power for the drive motor, the method further comprises: if the extended-range vehicle meets a power supplement exit condition, delaying for a preset calibration time length and then controlling the range extender to stop supplementing power for the drive motor.

6. The method of claim 5, wherein, before the step of, if the extended-range vehicle meets a power supplement exit condition, delaying for a preset calibration time length and then controlling the range extender to stop supplementing power for the drive motor, the method further comprises: when a time length during which the extended-range vehicle exits the driving mode continuously is a preset time length, and / or the current actual output power is less than a second preset power threshold, determining that the extended-range vehicle meets the power supplement exit condition.

7. The method of any one of claims 1-3, wherein, the preset time length threshold is less than a holding time length of the power battery at the pulse discharge power.

8. A vehicle drive control device characterized by comprising: The device comprises: a determination module, configured to, during the process that the extended-range vehicle travels in the pure electric mode, if the extended-range vehicle has a power supplement demand, determine a continuous discharge power of the power battery; an acquisition module, configured to acquire a current actual output power of the drive motor, and determine a time length during which the current actual output power continuously is greater than the continuous discharge power; a control module, configured to, when the time length is greater than a preset time length threshold, control the range extender to supplement power for the drive motor.

9. A vehicle drive control apparatus characterized by comprising: The device includes a memory, a processor, and a vehicle drive control program stored on the memory and executable on the processor, the vehicle drive control program configured to implement the steps of the vehicle drive control method of any one of claims 1 to 7.

10. A storage medium, characterized by The storage medium has stored thereon a vehicle drive control program that, when executed by a processor, implements the steps of the vehicle drive control method of any one of claims 1 to 7.

Images