CN-121989710-A - Vehicle power takeoff control method and vehicle

Abstract

The invention discloses a vehicle power takeoff control method and a vehicle, wherein the vehicle power takeoff control method comprises the steps of obtaining a gear request signal, determining a target power takeoff mode according to the gear request signal, controlling a second power system to output vehicle driving force and controlling a first power system to output power takeoff power in the driving power takeoff mode, and controlling the second power system not to respond to vehicle driving force and controlling the first power system to output power takeoff power in the parking power takeoff mode. The method can realize flexible switching between the driving power take-off mode and the parking power take-off mode based on the gear request signal, improves the flexibility of vehicle power take-off control, simultaneously avoids the linear correlation between the driving speed of the vehicle and the output rotating speed of the power take-off device, and improves the operation adaptability of the vehicle under the driving power take-off field.

Inventors

• WU XIANGCHAO
• SUN WENJU
• GUO ZHI
• GUO CHEN

Assignees

• 北京福田戴姆勒汽车有限公司

Dates

Publication Date

20260508

Application Date

20260327

Claims (10)

1. 1. A vehicle power take-off control method, characterized in that a vehicle includes a first power system for outputting power of a power take-off and a second power system for outputting driving force of the vehicle, the vehicle power take-off control method comprising: Obtaining a gear request signal; determining a target power taking mode according to the gear request signal, wherein the target power taking mode is a driving power taking mode or a parking power taking mode; under the driving power taking mode, controlling the second power system to output vehicle driving force and controlling the first power system to output power of a power takeoff; and in the parking power taking mode, the second power system is controlled to not respond to the vehicle driving force output and the first power system is controlled to output power of a power taking device.
2. 2. The vehicle power take-off control method according to claim 1, characterized in that determining a target power take-off mode according to the gear request signal includes: When the gear request signal is a forward gear or a reverse gear, the target power take-off mode is the driving power take-off mode; And when the gear request signal is other gears except for a forward gear and a reverse gear, the target power take-off mode is the parking power take-off mode.
3. 3. The control method of a vehicle power take-off according to claim 2, characterized in that, The first power system comprises a first motor controller, a first motor, a first transmission and a power takeoff; the vehicle power take-off control method further includes: the first transmission is controlled to shift to neutral based on a neutral request command before the target power take-off mode is determined, and the first transmission is engaged with the power take-off based on a power take-off engagement request command.
4. 4. The control method of a vehicle power take-off according to claim 3, characterized in that, The second power system comprises a second motor controller, a second motor and a second transmission; the vehicle power take-off control method further includes: And when the first transmission is switched to neutral gear or the first transmission is engaged with the power take-off, controlling the second transmission to keep the original state.
5. 5. The vehicle power take-off control method according to claim 4, characterized in that the vehicle power take-off control method further comprises: And detecting the on operation of a power take-off switch of the power take-off to obtain the power take-off engagement request instruction.
6. 6. The vehicle power take-off control method according to claim 5, characterized in that the power take-off switch is responsive to the on operation when the vehicle is in a running state or a parking state.
7. 7. The vehicle power take-off control method according to claim 1, characterized in that the vehicle power take-off control method further comprises: And when the exit condition of the target force taking mode is met, controlling the vehicle to exit from the driving force taking mode or the parking force taking mode.
8. 8. The vehicle power take-off control method according to claim 7, wherein the exit condition includes at least one of detection of an off operation of a power take-off switch, reception of a vehicle failure signal, and a vehicle speed exceeding a preset threshold.
9. 9. A vehicle, characterized by comprising: the first power system comprises a first motor controller, a first motor, a first transmission and a power takeoff, and is used for outputting power of the power takeoff; a second power system including a second motor controller, a second motor, and a second transmission for outputting a vehicle driving force; The transmission controller is connected with the first motor controller and the second motor controller and is used for outputting a neutral gear request instruction and a power takeoff engagement request instruction; A power take-off switch for issuing the power take-off combining request instruction based on a turn-on operation or issuing a turn-off instruction of the first transmission and the power take-off based on a turn-off operation; the whole vehicle controller is respectively connected with the transmission controller, the force taking switch, the first motor controller and the second motor controller and is used for executing the vehicle force taking device control method of any one of claims 1-8.
10. 10. The vehicle of claim 9, characterized in that the vehicle further comprises: the instrument is connected with the whole vehicle controller and used for displaying gears of the first transmission and the second transmission; The accelerator pedal is connected with the whole vehicle controller and is used for receiving an acceleration request of a driver and providing vehicle speed information for the whole vehicle controller; And the power battery is connected with the first motor controller and the second motor controller and is used for providing electric energy for the first power system and the second power system.

Description

Vehicle power takeoff control method and vehicle Technical Field The invention relates to the technical field of vehicles, in particular to a vehicle power takeoff control method and a vehicle. Background The existing vehicle power takeoff control strategy mainly depends on a single power system, namely, one motor simultaneously provides driving force for the whole vehicle through a transmission and drives the power takeoff. In the parking power take-off mode, the vehicle is required to be stopped, and the power of the power take-off can be output after the transmission is in neutral gear and the parking brake is pulled up. When switching from the parking power take-off mode to the driving power take-off mode, the driver must manually exit the parking power take-off mode and press the driving power take-off switch, namely, the power take-off device and the transmission must be disconnected firstly and then are connected again based on the driving power take-off mode, and then the vehicle is started again, so that the driving power take-off mode can be entered. Therefore, switching between the parking power take-off mode and the running power take-off mode is complicated. Meanwhile, as only one power system is arranged, when the vehicle is driven to take power, the running speed of the vehicle is in linear correlation with the output rotating speed of the power takeoff, so that the power of the power takeoff is difficult to flexibly provide in the running process of the vehicle. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a vehicle power take-off control method, which can flexibly switch between a driving power take-off mode and a parking power take-off mode based on a gear request signal, thereby improving flexibility of vehicle power take-off control, avoiding linear correlation between a driving speed of a vehicle and an output rotation speed of the power take-off, and improving operation adaptability of the vehicle under a driving power take-off scene. A second object of the invention is to propose a vehicle. In order to achieve the above purpose, the vehicle power takeoff control method according to the first aspect of the embodiment of the invention comprises a first power system and a second power system, wherein the first power system is used for outputting power of a power takeoff, the second power system is used for outputting vehicle driving force, the vehicle power takeoff control method comprises the steps of obtaining a gear request signal, determining a target power takeoff mode according to the gear request signal, wherein the target power takeoff mode is a driving power takeoff mode or a parking power takeoff mode, controlling the second power system to output vehicle driving force and controlling the first power system to output power of the power takeoff, and controlling the second power system not to respond to vehicle driving force and controlling the first power system to output power of the power takeoff in the parking power takeoff mode. According to the vehicle power takeoff control method provided by the embodiment of the invention, the vehicle is provided with the first power system and the second power system respectively, so that the power takeoff output power and the driving force of the whole vehicle are functionally separated, wherein the first power system is used for driving the power takeoff, and the second power system is used for driving the vehicle. In the implementation process, the vehicle can realize quick switching between the driving power take-off mode and the parking power take-off mode by acquiring the gear request signal and determining the target power take-off mode according to the gear request signal, and the mode switching can be completed without complex operation of a driver. When the gear request signal corresponds to the parking power taking mode, the second power system stops responding to the vehicle driving force output, and the first power system continuously outputs the power of the power taking device. The independent control mode ensures that the power takeoff can independently output required power according to the first power system no matter whether the vehicle runs or not, thereby avoiding the limitation that the running speed of the vehicle and the output rotating speed of the power takeoff are in linear association under the traditional single power system, realizing the relative independence of the output of the power takeoff and the running state of the whole vehicle, and enabling the vehicle to flexibly adapt to different operation scenes of running power taking and parking power taking, and further improving the flexibility and operation adaptability of the power taking control of the vehicle. In some embodiments, the target power take-off mode is determined according to the gear request signal, wh