Vehicle and torque distribution method and device thereof

Abstract

The present invention discloses a vehicle and a torque distribution method and apparatus thereof, wherein the vehicle includes an engine, a first motor, and a second motor. The method comprises the following steps: obtaining a vehicle torque distribution mode and a required vehicle torque; obtaining an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor based on the vehicle torque distribution mode and the required vehicle torque; and controlling the engine, the first motor, and the second motor to provide corresponding output torques based on the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor. Thus, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are dynamically adjusted according to different vehicle torque distribution modes and required vehicle torques, thereby achieving torque distribution factors under various torque distribution modes, reducing vehicle energy consumption, and improving driving experience.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle torque distribution, and in particular to a vehicle torque distribution method, a vehicle torque distribution device and a vehicle. Background Art

[0002] Currently, driven by the government, the current vehicle control system has a relatively mature R&D system. However, with the development of hybrid and pure electric vehicle technologies, the dual-motor equal torque distribution strategy has certain problems. It cannot meet the requirements of reducing system energy consumption and improving driving comfort, which is not conducive to the economy and comfort of the overall operation of the vehicle.

[0003] For example, the vehicle driving torque control strategy of related technologies usually distributes torque through a common torque distribution strategy after obtaining the target torque based on the accelerator pedal and speed table in different driving modes. The torque distribution strategy is single, which is not conducive to reducing energy consumption and improving driving experience and comfort. Summary of the Invention

[0004] The present invention aims to at least partially address one of the technical problems in the related art. To this end, a first object of the present invention is to provide a vehicle torque distribution method that dynamically adjusts the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor based on different vehicle torque distribution modes and vehicle torque requirements, thereby achieving torque distribution under various torque distribution modes, reducing vehicle energy consumption, and improving driving experience.

[0005] A second object of the present invention is to provide a torque distribution device for a vehicle.

[0006] A third object of the present invention is to provide a vehicle.

[0007] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present invention proposes a torque distribution method for a vehicle, wherein the vehicle includes an engine, a first motor and a second motor, and the method includes the following steps: obtaining the vehicle's torque distribution mode and the vehicle's required torque; obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle's torque distribution mode and the vehicle's required torque; and controlling the engine, the first motor and the second motor to provide corresponding output torques according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor.

[0008] According to an embodiment of the present invention, a vehicle torque distribution method obtains a vehicle torque distribution mode and a required vehicle torque, and then determines an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor based on the vehicle torque distribution mode and the required vehicle torque. Furthermore, based on the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor, the method controls the engine, first motor, and second motor to provide corresponding output torques. Thus, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are dynamically adjusted according to different vehicle torque distribution modes and required vehicle torques, thereby enabling the allocation of torque distribution factors under various torque distribution modes, reducing vehicle energy consumption, and improving the driving experience.

[0009] In addition, the vehicle torque distribution method according to the above embodiment of the present invention may also have the following additional technical features:

[0010] According to one embodiment of the present invention, the torque distribution mode of the vehicle includes a gear shift state torque distribution mode, an energy recovery torque distribution mode, a power battery SOC balancing torque distribution mode and a normal torque distribution mode.

[0011] According to one embodiment of the present invention, when the torque distribution mode of the vehicle is the gear shifting state torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes: obtaining the vehicle gear shifting state; obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle gear shifting state and the vehicle required torque.

[0012] According to an embodiment of the present invention, the vehicle shifting state includes an engine shifting state and an engine not shifting state and a second motor shifting state.

[0013] According to one embodiment of the present invention, when the torque distribution mode of the vehicle is the energy recovery torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes: determining that the engine torque distribution factor is 0; obtaining the vehicle's required braking torque and the braking torque of the second motor; and obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor based on the vehicle's required braking torque and the braking torque of the second motor.

[0014] According to one embodiment of the present invention, when the torque distribution mode of the vehicle is the power battery SOC balancing torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes: obtaining the first motor torque, the second motor torque, the engine torque and the power battery SOC; obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle required torque, the first motor torque, the second motor torque, the engine torque and the power battery SOC.

[0015] According to one embodiment of the present invention, when the torque distribution mode of the vehicle is the ordinary torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes: obtaining the vehicle demand mode and the vehicle demand power; and obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle demand torque, the vehicle demand mode and the vehicle demand power.

[0016] According to one embodiment of the present invention, the vehicle demand mode includes a sports mode and an economic mode, and the vehicle demand power includes a peak power demand corresponding to the economic mode and a constant power demand corresponding to the economic mode.

[0017] To achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a torque distribution device for a vehicle, wherein the vehicle includes an engine, a first motor and a second motor, and the device includes: an acquisition module for acquiring the vehicle's torque distribution mode and the vehicle's required torque; a distribution module for acquiring the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle's torque distribution mode and the vehicle's required torque; and a control module for controlling the engine, the first motor and the second motor to provide corresponding output torques according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor.

[0018] According to an embodiment of the present invention, a vehicle torque distribution device uses an acquisition module to obtain a vehicle torque distribution mode and a required vehicle torque. A distribution module then uses the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor to determine the torque distribution of the engine, the first motor torque distribution factor, and the second motor torque distribution factor. Furthermore, a control module controls the engine, the first motor, and the second motor to provide corresponding output torques based on the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor. Thus, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are dynamically adjusted based on different vehicle torque distribution modes and required vehicle torques, thereby enabling the allocation of torque distribution factors under various torque distribution modes, reducing vehicle energy consumption, and improving the driving experience.

[0019] To achieve the above-mentioned purpose, a vehicle provided in an embodiment of the third aspect of the present invention includes the torque distribution device of the vehicle of the above-mentioned embodiment of the present invention.

[0020] According to the vehicle of the embodiment of the present invention, by adopting the torque distribution device of the above-mentioned vehicle, the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor can be dynamically adjusted according to different vehicle torque distribution modes and vehicle required torque, thereby realizing the distribution of torque distribution factors under multiple torque distribution modes, reducing the energy consumption of the whole vehicle, and improving the driving experience.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of a torque distribution method for a vehicle according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a process for allocating torque distribution factors in a gear shift state torque distribution mode according to a specific embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a process for allocating torque distribution factors in an energy recovery torque distribution mode according to a specific embodiment of the present invention;

[0025] Figure 4 1 is a flow chart of allocating torque distribution factors in a power battery SOC balanced torque distribution mode according to a specific embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a process for allocating torque distribution factors in a normal torque distribution mode according to a specific embodiment of the present invention;

[0027] Figure 6 is a block diagram of a torque distribution device for a vehicle according to an embodiment of the present invention;

[0028] Figure 7 is a block diagram of a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0030] A torque distribution method for a vehicle, a torque distribution method apparatus for a vehicle, and a vehicle according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0031] Specifically, the vehicle in the embodiment of the present invention includes a hybrid vehicle, which includes an engine, a first motor and a second motor, wherein the engine, the first motor and the second motor can all serve as power sources for the vehicle to provide power for the vehicle.

[0032] Figure 1 4 is a flow chart of a torque distribution method for a vehicle according to an embodiment of the present invention.

[0033] like Figure 1 As shown, the torque distribution method of a vehicle includes the following steps:

[0034] S101 , obtaining a vehicle torque distribution mode and a vehicle required torque.

[0035] Optionally, in some embodiments of the present invention, the vehicle's torque distribution mode may include a gear shift state torque distribution mode, an energy recovery torque distribution mode, a power battery SOC balancing torque distribution mode and a normal torque distribution mode, and the vehicle's required torque can be obtained by looking up the table based on the accelerator pedal opening and vehicle speed.

[0036] S102 , obtaining an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to a vehicle torque distribution mode and a vehicle required torque.

[0037] It can be understood that in some embodiments of the present invention, the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor can be obtained according to the vehicle's required torque and for different vehicle torque distribution modes, thereby realizing the distribution of torque distribution factors under multiple torque distribution modes.

[0038] S103 , according to the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor, respectively controlling the engine, the first motor, and the second motor to provide corresponding output torques.

[0039] It should be understood that in the above-described embodiment of the present invention, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor can be rationally allocated based on the vehicle's required torque, according to any of the following torque distribution modes: the shift state torque distribution mode, the energy recovery torque distribution mode, the power battery SOC balancing torque distribution mode, and the normal torque distribution mode. This allows the engine, first motor, and second motor to be controlled to provide corresponding output torques. This allows for the allocation of torque distribution factors under various torque distribution modes, reducing vehicle energy consumption and enhancing the driving experience.

[0040] The following describes various torque distribution modes of a vehicle in conjunction with various specific embodiments of the present invention.

[0041] Furthermore, when the vehicle's torque distribution mode is the gear shift state torque distribution mode, as shown in FIG. Figure 2 As shown, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes:

[0042] S201, obtaining the vehicle shifting status.

[0043] Alternatively, in some embodiments of the present invention, the vehicle shifting state may include an engine shifting state and an engine not shifting state and a second motor shifting state.

[0044] S202 , obtaining an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to a vehicle shifting state.

[0045] Specifically, in some embodiments of the present invention, when the vehicle shifting state is the engine shifting state, since the engine is in the shifting process, at this time, the engine torque distribution factor can be determined to be 0, the first motor torque distribution factor is 0, and the second motor torque distribution factor is 100, so that the engine and the first motor have no power output, and the power of the entire vehicle is output and driven by the second motor, so that while realizing the engine shifting, the second motor is used to output the power of the entire vehicle, thereby improving the stability of the entire vehicle, wherein the engine shifting process includes a torque reduction process and a torque recovery process. During the torque reduction process, the engine output torque and the first motor output torque are transitioned to the second motor for output. During the torque recovery process, the second motor output torque returns to the engine and the first motor output.

[0046] Also, when the engine is not shifting and the second motor is in the shifting state, since the second motor is in the shifting process, at this time, the engine torque distribution factor can be determined according to the vehicle's required torque and the engine speed. The first motor torque distribution factor is 100, and the second motor torque distribution factor is 0, so that the second motor has no power output, and the power of the entire vehicle is jointly output and driven by the engine and the first motor. Among them, the second motor shifting process includes a torque reduction process and a torque recovery process. During the torque reduction process, the torque output of the second motor is transferred to the output of the first motor. During the torque recovery process, the output torque of the first motor is returned to the engine and the second motor output.

[0047] It should be understood that in the above-mentioned embodiment of the present invention, the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor can be obtained according to different gear shifting states, and according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor, the engine, the first motor and the second motor are respectively controlled to provide corresponding output torques, thereby realizing the distribution of torque distribution factors in the gear shifting state torque distribution mode, reducing the energy consumption of the whole vehicle, and improving the driving experience.

[0048] Furthermore, when the vehicle's torque distribution mode is the energy recovery torque distribution mode, as Figure 3 As shown, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes:

[0049] S301: Determine that the engine torque distribution factor is 0.

[0050] It is understandable that in some embodiments of the present invention, when the vehicle is in an energy recovery state, the engine torque distribution factor may be determined to be 0, so that the engine has no power output, thereby reducing energy consumption.

[0051] S302 , obtaining the required braking torque of the vehicle and the braking torque of the second motor.

[0052] Specifically, in some embodiments of the present invention, the required braking torque of the vehicle may be obtained according to the brake pedal opening, and the braking torque of the second motor may be calibrated accordingly in advance according to the type of the second motor.

[0053] S303 : Obtain an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to the required braking torque of the vehicle and the braking torque of the second motor.

[0054] Specifically, in some embodiments of the present invention, when the vehicle's required braking torque is less than the braking torque of the second motor, it can be determined that the second motor can meet the vehicle's braking demand. At this time, the first motor's torque distribution factor can be determined to be 0, and the second motor's torque distribution factor can be determined to be 100, so that the second motor independently completes the vehicle's braking energy recovery. Moreover, when the vehicle's required braking torque is greater than the braking torque of the second motor, it can be determined that the second motor cannot meet the vehicle's braking demand. At this time, the first motor's torque distribution factor can be obtained by looking up the table based on the vehicle's required braking torque and the first motor's speed, and then the second motor's torque distribution factor can be determined based on the first motor's torque distribution factor, wherein the sum of the first motor's torque distribution factor and the second motor's torque distribution factor is 100, so that the first motor and the second motor jointly complete the vehicle's braking energy recovery.

[0055] It should be noted that in some embodiments of the present invention, when the engine is in a gear shifting state, the vehicle's braking energy recovery can be achieved through the second motor. That is, in the process of controlling the vehicle to recover energy, the user's gear shifting needs can also be met, thereby improving the user's driving experience.

[0056] It should be understood that in the above-mentioned embodiment of the present invention, the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor can be obtained according to different vehicle braking demand torques, and according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor, the engine, the first motor and the second motor are respectively controlled to provide corresponding output torques, thereby realizing the distribution of torque distribution factors in the energy recovery torque distribution mode, reducing the energy consumption of the whole vehicle, and improving the driving experience.

[0057] Furthermore, when the vehicle's torque distribution mode is the power battery SOC balanced torque distribution mode, as Figure 4 As shown, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes:

[0058] S401 , obtaining a first motor torque, a second motor torque, an engine torque, and a power battery SOC.

[0059] It is understandable that in some embodiments of the present invention, the first motor torque can be calibrated in advance according to the first motor model, the second motor torque can be calibrated according to the second motor model, and the engine torque can be calibrated according to the engine model.

[0060] S402 , obtaining an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to the vehicle required torque, the first motor torque, the second motor torque, the engine torque, and the power battery SOC.

[0061] Specifically, in some embodiments of the present invention, when the vehicle's torque distribution mode is the power battery SOC balancing torque distribution mode, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor may be obtained according to the following table:

[0062] Table 1 Relationship between torque distribution factor and high power battery SOC

[0063]

[0064]

[0065]

[0066] Specifically, in the above table, the first power threshold>the second power threshold>the third power threshold. For example, the first power threshold may be 70%, the second power threshold may be 40%, and the third power threshold may be 20%.

[0067] For example, it can be seen from Table 1 above that, for example, when the power battery SOC is greater than the first power threshold (70%) and the vehicle demand torque is less than the first motor torque, since the first motor can meet the vehicle torque demand, at this time, the engine torque distribution factor can be determined to be 0, and the first motor torque distribution factor is obtained by looking up the table according to the vehicle demand torque and the first motor speed, and the second motor torque distribution factor is obtained according to the first motor torque distribution factor, wherein the sum of the first motor torque distribution factor and the second motor torque distribution factor is 100, and the vehicle enters the pure electric mode, thereby reducing the energy consumption of the entire vehicle. Also, it can be seen from Table 2 above that, for example, when the power battery SOC is less than the third power threshold (20%), and the vehicle demand torque is greater than the engine torque, since the power battery SOC is too low, at this time, the engine torque distribution factor can be obtained according to the vehicle demand torque and the engine speed by looking up the table, and the first motor torque distribution factor is determined to be 0 and the second motor torque distribution factor is determined to be 0, and the vehicle enters the hybrid mode, thereby avoiding power battery depletion. Similarly, the corresponding engine torque distribution factor, first motor torque distribution factor and second motor torque distribution factor can be obtained based on Table 1 or Table 2 above according to different vehicle demand torque, first motor torque, second motor torque, engine torque and power battery SOC. To reduce redundancy, they will not be repeated here.

[0068] It should be understood that in the above-mentioned embodiments of the present invention, the corresponding engine torque distribution factor, first motor torque distribution factor and second motor torque distribution factor can be obtained according to different vehicle required torque, first motor torque, second motor torque, engine torque and power battery SOC, and according to the engine torque distribution factor, first motor torque distribution factor and second motor torque distribution factor, the engine, first motor and second motor are respectively controlled to provide corresponding output torque, thereby realizing the distribution of torque distribution factors in the power battery SOC balanced torque distribution mode, reducing the energy consumption of the whole vehicle, and improving the driving experience.

[0069] Furthermore, when the vehicle's torque distribution mode is the normal torque distribution mode, as Figure 5 As shown, obtaining the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor includes:

[0070] S501: Obtain a vehicle demand mode and a vehicle demand power.

[0071] Optionally, in some embodiments of the present invention, the vehicle demand mode may include a sports mode and an economic mode, and the vehicle demand power may include a peak power demand corresponding to the economic mode and a constant power demand corresponding to the economic mode.

[0072] S502 : Obtain an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to a vehicle required torque, a vehicle required mode, and a vehicle required power.

[0073] Specifically, in some embodiments of the present invention, if the vehicle demand mode is an economic mode and the vehicle demand torque is a creep or low torque request, the engine torque distribution factor can be determined to be 0, the first motor torque distribution factor can be 0, and the second motor torque distribution factor can be determined to be 100. At this time, the power of the entire vehicle is output and driven by the second motor, thereby reducing energy consumption. If the vehicle demand mode is an economic mode, the vehicle demand torque is not creep or a low torque request, and the vehicle demand power is a constant power demand, the engine can be controlled to operate in an output high-efficiency zone, and the output power of the first motor and the second motor can be limited below the continuous power curve. If the vehicle demand mode is an economic mode, the vehicle demand torque is not creep or a low torque request, and the vehicle demand power is not a constant power demand, the engine can be controlled to operate in an output high-efficiency zone, and dynamic output compensation can be performed through the second motor.

[0074] Furthermore, in some embodiments of the present invention, if the vehicle demand mode is a sport mode and the vehicle demand torque is a creep or low torque request, the engine torque distribution factor is determined to be 0, the first motor torque distribution factor is 0, and the second motor torque distribution factor is 100. At this time, the power of the entire vehicle is output and driven by the second motor, thereby reducing energy consumption. If the vehicle demand mode is a sport mode, the vehicle demand torque is not a creep or low torque request, and the vehicle demand power is a peak power demand, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are obtained according to the engine power peak, the first motor power peak, and the second motor power peak. For example, the engine torque distribution factor is obtained by looking up a table according to the engine power peak, the vehicle demand torque, and the engine speed, the first motor torque distribution factor is obtained by looking up a table according to the first motor power peak, the remaining demand torque, and the first motor speed, and the second motor torque distribution factor is obtained according to the second motor power peak and the first motor torque distribution factor. If the vehicle demand mode is a sport mode, the vehicle demand torque is not a creep or low torque request, and the vehicle demand power is not a peak power demand, the engine is controlled to operate in an output high-efficiency area, and dynamic output compensation is performed through the second motor.

[0075] It should be understood that in the above-mentioned embodiments of the present invention, the corresponding engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor can be obtained according to different vehicle required torques, vehicle required modes and vehicle required powers, and according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor, the engine, the first motor and the second motor are respectively controlled to provide corresponding output torques, thereby realizing the distribution of torque distribution factors in the normal torque distribution mode, reducing the energy consumption of the whole vehicle and improving the driving experience.

[0076] It should be noted that, in some embodiments of the present invention, when the vehicle simultaneously has a gear shifting state torque distribution demand, an energy recovery torque distribution demand, a power battery SOC balancing torque distribution demand and a normal torque distribution demand, the vehicle can enter a corresponding torque distribution mode according to the priority of the torque distribution mode, wherein the priority of the gear shifting state torque distribution mode is greater than the priority of the energy recovery torque distribution mode, the priority of the energy recovery torque distribution mode is greater than the power battery SOC balancing torque distribution mode, and the priority of the power battery SOC balancing torque distribution mode is greater than the normal torque distribution demand.

[0077] In summary, according to the vehicle torque distribution method of an embodiment of the present invention, a vehicle torque distribution mode and a required vehicle torque are obtained. Based on the vehicle torque distribution mode and the required vehicle torque, an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor are then determined. Furthermore, based on the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor, the engine, first motor, and second motor are controlled to provide corresponding output torques. Thus, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are dynamically adjusted according to different vehicle torque distribution modes and required vehicle torques, thereby achieving torque distribution factors under various torque distribution modes, reducing vehicle energy consumption, and improving the driving experience.

[0078] Figure 6 4 is a block diagram of a torque distribution device for a vehicle according to an embodiment of the present invention.

[0079] like Figure 6 As shown, the torque distribution device 100 of a vehicle includes: an acquisition module 10 , a distribution module 20 and a control module 30 .

[0080] Specifically, the acquisition module 10 is used to obtain the vehicle's torque distribution mode and the vehicle's required torque; the distribution module 20 is used to obtain the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle's torque distribution mode and the vehicle's required torque; the control module 30 is used to control the engine, the first motor and the second motor to provide corresponding output torques according to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor.

[0081] Furthermore, the vehicle's torque distribution mode includes a gear shift state torque distribution mode, an energy recovery torque distribution mode, a power battery SOC balancing torque distribution mode and a normal torque distribution mode.

[0082] Furthermore, when the vehicle's torque distribution mode is a gear shift state torque distribution mode, the distribution module 20 is also used to obtain the vehicle's gear shift state; and obtain the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor according to the vehicle's gear shift state and the vehicle's required torque.

[0083] Furthermore, the vehicle shifting state includes an engine shifting state and an engine not shifting state and a second motor shifting state.

[0084] Furthermore, when the vehicle's torque distribution mode is the energy recovery torque distribution mode, the distribution module 20 is also used to determine that the engine torque distribution factor is 0; obtain the vehicle's required braking torque and the braking torque of the second motor; and obtain the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor based on the vehicle's required braking torque and the second motor's braking torque.

[0085] Furthermore, when the vehicle's torque distribution mode is the power battery SOC balanced torque distribution mode, the distribution module 20 is also used to obtain the first motor torque, the second motor torque, the engine torque and the power battery SOC; and obtain the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to the vehicle's required torque, the first motor torque, the second motor torque, the engine torque and the power battery SOC.

[0086] Furthermore, when the vehicle's torque distribution mode is the normal torque distribution mode, the distribution module 20 is also used to obtain the vehicle demand mode and the vehicle demand power; and obtain the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor based on the vehicle demand torque, the vehicle demand mode and the vehicle demand power.

[0087] Furthermore, the vehicle demand mode includes a sports mode and an economic mode, and the vehicle demand power includes a peak power demand corresponding to the economic mode and a constant power demand corresponding to the economic mode.

[0088] It should be noted that the specific implementation of the vehicle torque distribution device 100 in the embodiment of the present invention corresponds one-to-one to the specific implementation of the vehicle torque distribution method in the aforementioned embodiment of the present invention, and will not be repeated here to reduce redundancy.

[0089] In summary, according to an embodiment of the present invention, the vehicle torque distribution device uses an acquisition module to obtain the vehicle's torque distribution mode and required vehicle torque. The distribution module then uses this to obtain the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor based on the vehicle's torque distribution mode and required vehicle torque. Furthermore, the control module uses this to control the engine, first motor, and second motor to provide corresponding output torques. Thus, the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are dynamically adjusted based on different vehicle torque distribution modes and required vehicle torques, thereby enabling the allocation of torque distribution factors under various torque distribution modes, reducing vehicle energy consumption, and improving the driving experience.

[0090] Figure 7 is a block diagram of a vehicle according to an embodiment of the present invention.

[0091] like Figure 7 As shown, a vehicle 1000 includes the vehicle torque distribution device 100 according to the embodiment of the present invention.

[0092] It should be noted that the specific implementation of the vehicle 1000 in the embodiment of the present invention can refer to the specific real-time implementation of the torque distribution device 100 of the vehicle in the embodiment of the present invention described above, and will not be repeated here to reduce redundancy.

[0093] In summary, the vehicle according to the embodiment of the present invention, by adopting the torque distribution device of the above-mentioned vehicle, can dynamically adjust the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor according to different vehicle torque distribution modes and vehicle required torque, thereby realizing the distribution of torque distribution factors under multiple torque distribution modes, reducing the energy consumption of the whole vehicle, and improving the driving experience.

[0094] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0095] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0096] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0097] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0098] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0099] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0100] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0101] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A torque distribution method for a vehicle, characterized in that: The vehicle includes an engine, a first motor, and a second motor, and the method includes the following steps: Obtaining a vehicle's torque distribution mode and a vehicle's required torque; Obtaining an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to the vehicle torque distribution mode and the vehicle required torque; According to the engine torque distribution factor, the first motor torque distribution factor and the second motor torque distribution factor, respectively controlling the engine, the first motor and the second motor to provide corresponding output torques; The vehicle's torque distribution mode includes a gear shift state torque distribution mode, an energy recovery torque distribution mode, a power battery SOC balancing torque distribution mode, and a normal torque distribution mode; The obtaining of the vehicle's torque distribution mode includes: When the vehicle simultaneously has a gear shifting state torque distribution demand, an energy recovery torque distribution demand, a power battery SOC balancing torque distribution demand and a normal torque distribution demand, the vehicle enters a corresponding torque distribution mode according to the priority of the torque distribution mode, wherein the priority of the gear shifting state torque distribution mode is greater than the priority of the energy recovery torque distribution mode, the priority of the energy recovery torque distribution mode is greater than the power battery SOC balancing torque distribution mode, and the priority of the power battery SOC balancing torque distribution mode is greater than the normal torque distribution demand.

2. The vehicle torque distribution method according to claim 1, characterized in that: When the torque distribution mode of the vehicle is the gear-shift state torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor includes: Get the vehicle shift status; The engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are obtained according to the vehicle shift state and the vehicle required torque.

3. The vehicle torque distribution method according to claim 2, characterized in that: The vehicle shifting state includes an engine shifting state and an engine not shifting state and a second motor shifting state.

4. The vehicle torque distribution method according to claim 1, characterized in that: When the torque distribution mode of the vehicle is the energy recovery torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor includes: Determining the engine torque distribution factor to be 0; obtaining a required braking torque of the vehicle and a braking torque of the second motor; The engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are obtained according to the vehicle required braking torque and the braking torque of the second motor.

5. The vehicle torque distribution method according to claim 1, characterized in that: When the torque distribution mode of the vehicle is the power battery SOC balancing torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor includes: Obtaining the first motor torque, the second motor torque, the engine torque, and the power battery SOC; The engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are obtained according to the vehicle required torque, the first motor torque, the second motor torque, the engine torque, and the power battery SOC.

6. The vehicle torque distribution method according to claim 1, characterized in that: When the torque distribution mode of the vehicle is the normal torque distribution mode, obtaining the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor includes: Obtaining a vehicle demand pattern and vehicle demand power; The engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor are obtained according to the vehicle demand torque, the vehicle demand mode, and the vehicle demand power.

7. The vehicle torque distribution method according to claim 6, characterized in that: The vehicle demand mode includes a sports mode and an economic mode, and the vehicle demand power includes a peak power demand corresponding to the sports mode and a constant power demand corresponding to the economic mode.

8. A torque distribution device for a vehicle, characterized in that: A vehicle includes an engine, a first motor, and a second motor, and the device includes: An acquisition module, configured to acquire a vehicle's torque distribution mode and a vehicle's required torque; a distribution module, configured to obtain an engine torque distribution factor, a first motor torque distribution factor, and a second motor torque distribution factor according to the vehicle torque distribution mode and the vehicle required torque; a control module, configured to control the engine, the first motor, and the second motor to provide corresponding output torques according to the engine torque distribution factor, the first motor torque distribution factor, and the second motor torque distribution factor; The vehicle's torque distribution mode includes a gear shift state torque distribution mode, an energy recovery torque distribution mode, a power battery SOC balancing torque distribution mode, and a normal torque distribution mode; The obtaining of the vehicle's torque distribution mode includes: When the vehicle simultaneously has a gear shifting state torque distribution demand, an energy recovery torque distribution demand, a power battery SOC balancing torque distribution demand and a normal torque distribution demand, the vehicle enters a corresponding torque distribution mode according to the priority of the torque distribution mode, wherein the priority of the gear shifting state torque distribution mode is greater than the priority of the energy recovery torque distribution mode, the priority of the energy recovery torque distribution mode is greater than the power battery SOC balancing torque distribution mode, and the priority of the power battery SOC balancing torque distribution mode is greater than the normal torque distribution demand.

9. A vehicle, characterized in that: The vehicle includes the vehicular torque distribution device according to claim 8 .

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