A method, device, electronic device and storage medium for determining vehicle electric power

Abstract

The present invention discloses a method, device, electronic device and storage medium for determining vehicle electric power, wherein the method comprises: determining a reference driving power and a reference recovery power corresponding to the target vehicle respectively according to the peak driving torque and peak recovery torque of the motor of the target vehicle; determining the driving power to be compared of the target vehicle under at least one working condition to be used, and determining the peak driving power of the motor corresponding to the target vehicle based on the driving power to be compared and each driving power to be compared; determining the recovery power to be compared of the target vehicle under at least one test working condition, and determining the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; and driving the target vehicle to travel based on the peak driving power and the peak recovery power of the motor. The problem of inaccurate determination of the motor power of the vehicle is solved, and the effect of accurately calculating the motor power of the vehicle is achieved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, device, electronic equipment and storage medium for determining vehicle electric power. Background Art

[0002] For hybrid vehicles, motor power includes motor drive power and motor recovery power, and motor drive power and motor recovery power are important parameters that affect the power and economy of the vehicle.

[0003] At present, different hybrid electric vehicles have different power system configuration schemes. When determining the motor power corresponding to the vehicle, it is usually calculated based on some inherent parameters of the motor body. However, the motor power obtained by this calculation method is not accurate enough, which affects the overall power and economy of the vehicle.

[0004] In order to accurately calculate the motor power of a hybrid vehicle, it is necessary to improve the method of determining the motor power of the vehicle. Summary of the invention

[0005] The present invention provides a method, device, electronic device and storage medium for determining the electric power of a vehicle, so as to solve the problem of inaccurate determination of the motor power of the vehicle.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining vehicle electric power, comprising:

[0007] According to the peak driving torque and peak recovery torque of the motor of the target vehicle, a reference driving power and a reference recovery power corresponding to the target vehicle respectively;

[0008] Determine the drive power to be compared of the target vehicle under at least one working condition to be used, and determine the peak drive power of the motor corresponding to the target vehicle based on the drive power to be referenced and each drive power to be compared; wherein the working condition to be used includes at least one of a maximum climbing condition, a preset slope condition, a driving condition corresponding to a preset vehicle speed, and a preset power mode condition;

[0009] Determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; wherein the test condition includes at least one of a system test condition and a test condition corresponding to overcoming friction of the engine of the target vehicle;

[0010] The target vehicle is driven to travel based on the peak driving power of the motor and the peak recovery power of the motor.

[0011] In a second aspect, an embodiment of the present invention further provides a vehicle electric power determination device, comprising:

[0012] A power determination module, configured to determine a reference driving power and a reference recovery power corresponding to the target vehicle according to a peak driving torque of the motor and a peak recovery torque of the motor of the target vehicle;

[0013] a peak driving power determination module, used to determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be referenced and each driving power to be compared; wherein the working condition to be used includes at least one of a maximum climbing working condition, a preset slope working condition, a driving working condition corresponding to a preset vehicle speed, and a preset power mode working condition;

[0014] a peak recovery power determination module, configured to determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; wherein the test condition includes at least one of a system test condition and a test condition corresponding to the engine of the target vehicle overcoming friction;

[0015] The vehicle driving module is used to drive the target vehicle based on the peak driving power of the motor and the peak recovery power of the motor.

[0016] In a third aspect, an embodiment of the present invention further provides an electronic device, including:

[0017] at least one processor; and

[0018] a memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle electric power determination method described in any embodiment of the present invention.

[0020] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle electric power determination method described in any embodiment of the present invention when executed.

[0021] The technical solution of this embodiment is to determine the reference driving power and reference recovery power corresponding to the target vehicle according to the peak driving torque and peak recovery torque of the motor of the target vehicle; determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be compared and each driving power to be compared; determine the recovery power to be compared of the target vehicle under at least one test working condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; and drive the target vehicle to travel based on the peak driving power and the peak recovery power of the motor. The problem of inaccurate determination of the motor power of the vehicle is solved, and the effect of accurately calculating the motor power of the vehicle is achieved.

[0022] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a flow chart of a method for determining vehicle electric power provided according to Embodiment 1 of the present invention;

[0025] Figure 2 is a structural schematic diagram of a power system provided according to Embodiment 2 of the present invention;

[0026] Figure 3 is a flow chart of a method for determining peak drive power of a motor provided according to Embodiment 2 of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of a vehicle electric power determination device provided according to Embodiment 3 of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of an electronic device for implementing the vehicle electric power determination method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0031] Embodiment 1

[0032] Figure 1 A flowchart of a vehicle electric power determination method is provided for embodiment 1 of the present invention. This embodiment is applicable to situations where the motor power of a vehicle is to be accurately calculated. The method can be executed by a vehicle electric power determination device, which can be implemented in the form of hardware and / or software. The vehicle electric power determination device can be configured in a computing device that can execute the vehicle electric power determination method.

[0033] like Figure 1 As shown, the method includes:

[0034] S110 : Calculate a reference driving power and a reference recovery power corresponding to the target vehicle according to the peak driving torque and the peak recovery torque of the motor of the target vehicle.

[0035] Among them, the target vehicle can be understood as a vehicle that needs to calculate the vehicle electric power. The target vehicle is subject to various resistances during driving, such as rolling resistance, air resistance, slope resistance and acceleration resistance. In order to overcome these resistances, the power system of the target vehicle is required to provide a certain driving force to the target vehicle to generate a corresponding driving torque, which is transmitted to the wheels through the transmission system of the target vehicle, thereby driving the target vehicle to travel. Among them, the driving force provided by the power system to the target vehicle is equal to the sum of all resistances. The peak driving torque of the motor can be understood as the maximum torque corresponding to the power system providing a certain driving force to the target vehicle. The peak recovery torque of the motor can be understood as the maximum torque that the motor can recover when converting kinetic energy into electrical energy during the braking process of the target vehicle. The reference driving power can be understood as the driving power determined based on the peak driving torque of the motor, and the reference recovery power can be understood as the recovery power determined based on the peak recovery torque of the motor.

[0036] Specifically, the peak driving torque of the motor and the peak recovery torque of the motor corresponding to the target vehicle are obtained, and based on corresponding calculation methods, the reference driving power corresponding to the peak driving torque of the motor and the reference recovery power corresponding to the peak recovery driving torque of the motor are respectively determined.

[0037] Optionally, the reference driving power and reference recovery power corresponding to the target vehicle respectively include: determining the reference driving power corresponding to the target vehicle based on the peak driving torque of the motor corresponding to the target vehicle, a preset motor speed and a first preset constant; determining the reference recovery power corresponding to the target vehicle based on the peak recovery torque of the motor corresponding to the target vehicle, a preset motor efficiency and a second preset constant.

[0038] Among them, the preset motor speed can be understood as the preset motor speed of the target vehicle, and the preset motor speed can be determined according to the actual situation. The preset motor efficiency can be understood as the preset motor efficiency of the target vehicle. The first preset constant can be understood as a fixed value used when calculating the reference driving power. The second preset constant can be understood as a fixed value used when calculating the reference recovery power. It should be noted that the first preset constant and the second preset constant can be equal or unequal, and are set according to the actual situation.

[0039] Specifically, when determining the driving power to be referenced, the peak driving torque of the motor corresponding to the motor of the target vehicle is obtained, the peak driving torque of the motor is multiplied by the preset motor speed, and the ratio of the obtained product result to the first preset constant is determined as the driving power to be referenced corresponding to the motor of the target vehicle. When determining the recovery power to be referenced, the peak recovery torque of the motor corresponding to the motor of the target vehicle is obtained, the peak recovery torque of the motor is multiplied by the motor speed to obtain a first product result of the two, and the motor efficiency of the target vehicle is multiplied by the second preset constant to obtain a second product result, and the ratio of the first product result to the second product result is determined as the recovery power to be referenced corresponding to the motor of the target vehicle.

[0040] Optionally, before determining the motor peak driving torque and motor peak recovery torque of the target vehicle, the method includes: determining the motor driving torque of the target vehicle under at least one working condition to be used based on a vehicle dynamics function; determining the maximum motor driving torque from each motor driving torque as the motor peak driving torque; and determining the motor peak recovery torque based on braking system characteristics corresponding to the target vehicle.

[0041] The working conditions to be used include a maximum climbing condition, a preset slope condition, and a driving condition corresponding to a preset vehicle speed, and different working conditions to be used correspond to different motor drive torques.

[0042] In the present technical solution, before the motor peak driving power and the motor peak recovery power are determined, the motor peak driving torque and the motor peak recovery torque corresponding to the motor of the target vehicle need to be determined. Specifically, when determining the motor peak driving power, it can be determined according to the vehicle dynamics function, and the vehicle dynamics function can be correspondingly deformed under different working conditions to be used, so as to better apply the vehicle dynamics function to the process of determining the motor peak driving power.

[0043] Exemplarily, when calculating the peak driving torque of the motor, if the working condition to be used is the maximum climbing condition, the first driving torque of the motor of the target vehicle under the maximum climbing condition can be determined according to the maximum climbing grade of the target vehicle and the initial vehicle speed of the target vehicle. If the working condition to be used is the preset slope condition, the second driving torque of the motor of the target vehicle under the preset slope condition can be determined according to the starting torque of the engine that overcomes the target vehicle when starting at the preset slope. If the working condition to be used is the driving condition corresponding to the preset vehicle speed, the third driving torque of the motor of the target vehicle under the driving condition corresponding to the preset vehicle speed can be calculated based on the starting torque of the engine at the preset speed, such as when the target vehicle is traveling at 60km / h, the starting torque of the engine determines the third driving torque. From the first driving torque, the second driving torque and the third driving torque, the maximum driving torque is selected as the peak driving torque of the motor corresponding to the target vehicle.

[0044] For example, when calculating the peak recovery torque of the motor, the peak recovery torque of the motor corresponding to the target vehicle may be calculated according to the maximum braking recovery of the braking system of the target vehicle.

[0045] S120: Determine a driving power to be compared of the target vehicle under at least one operating condition to be used, and determine a peak driving power of the motor corresponding to the target vehicle based on the driving power to be referenced and each driving power to be compared.

[0046] The driving power to be compared can be understood as the motor driving power determined based on different working conditions to be used, so as to determine the peak driving power of the motor corresponding to the motor of the target vehicle based on the driving power to be compared and the driving power to be referenced. The working conditions to be used include at least one of the maximum climbing working condition, the preset slope working condition, the driving working condition corresponding to the preset vehicle speed, and the preset power mode working condition.

[0047] Specifically, the target vehicle has different driving powers to be compared under different working conditions to be used, and the driving power determination methods adopted are also different. In order to facilitate the distinction of driving powers to be compared under different working conditions to be used, in the present technical solution, the motor driving powers of the target vehicle under different working conditions to be used are distinguished, such as, the driving power to be compared corresponding to the maximum climbing condition is used as the first driving power to be compared; the driving power to be compared corresponding to the preset slope condition is used as the second driving power to be compared; the driving power to be compared corresponding to the driving condition corresponding to the preset vehicle speed is used as the third driving power to be compared; the driving power to be compared corresponding to the preset power mode condition is used as the fourth driving power to be compared. After obtaining the driving power to be compared corresponding to the motor of the target vehicle under each working condition to be used, the peak driving power of the motor is determined.

[0048] Optionally, determine the driving power to be compared of the target vehicle under at least one operating condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be referenced and each driving power to be compared, including: obtaining the associated parameters to be used under each operating condition to be used of the target vehicle; based on the driving power determination function corresponding to each operating condition to be used, processing the associated parameters to be used of the corresponding operating condition to be used to obtain the driving power to be compared under the corresponding operating condition to be used; and determine the maximum driving power from the driving power to be referenced and each driving power to be compared as the peak driving power of the motor.

[0049] Among them, when calculating the driving power to be compared corresponding to different working conditions to be used, different vehicle parameters need to be used, that is, different working conditions to be used are associated with different vehicle parameters, and the associated parameters to be used can be understood as the vehicle parameters associated with the working condition to be used when calculating the driving power to be compared under the corresponding working condition to be used. The driving power determination function can be understood as a function for calculating the driving power to be compared based on the parameters to be used, and accordingly, the driving power determination functions used for different working conditions to be used are also different.

[0050] Specifically, the associated parameters to be used and the driving power determination function corresponding to each working condition to be used are determined, and the driving power is calculated for the corresponding associated parameters to be used based on the driving power determination function to obtain the driving power to be compared under the corresponding working condition to be used. Further, from each driving power to be compared, the maximum driving power is selected as the peak driving power of the motor.

[0051] Optionally, the operating condition to be used is a preset power mode condition, which includes a hybrid drive mode condition and an engine drive mode condition. The associated parameters to be used of the corresponding operating condition to be used are processed to obtain the driving power to be compared under the corresponding operating condition to be used, including: determining the hybrid driving power of the target vehicle in the hybrid driving mode; wherein the hybrid driving mode includes a motor driving mode and an engine driving mode; determining the engine driving power of the target vehicle in the engine driving mode; and determining the driving power to be used corresponding to the maximum speed of the target vehicle based on the difference between the hybrid driving power and the engine driving power.

[0052] In the present technical solution, the working condition to be used may include a preset power mode working condition, wherein the preset power mode working condition includes a hybrid drive mode working condition, i.e., the target vehicle uses both the motor drive mode and the engine drive mode to control the driving of the target vehicle, and also includes an engine drive mode working condition, i.e., the target vehicle uses only the engine drive mode to control the driving of the target vehicle. Accordingly, the motor drive power corresponding to the target vehicle in the hybrid drive mode is the hybrid drive power, and the motor drive power corresponding to the target vehicle in the engine drive mode is the engine drive power.

[0053] For example, when the target vehicle is in the hybrid driving mode, the hybrid driving power of the target vehicle can be determined according to the maximum vehicle speed, transmission coefficient, air resistance coefficient, frontal area and rolling resistance coefficient of the target vehicle. Specifically, the hybrid driving power of the target vehicle can be determined by the following formula:

[0054]

[0055] Among them, P 混动 represents the hybrid driving power of the target vehicle, η T represents the transmission coefficient, m represents the target vehicle weight, g represents gravity, f represents the rolling resistance coefficient, v h represents the maximum speed of the target vehicle in hybrid driving mode, C D represents the air resistance coefficient, and A represents the frontal area corresponding to the target vehicle.

[0056] For example, when the target vehicle is in the engine driving mode, the engine driving power of the target vehicle can be determined according to the maximum vehicle speed, transmission coefficient, air resistance coefficient, frontal area and rolling resistance coefficient of the target vehicle during stable driving. Specifically, the following formula can be used to determine the engine driving power of the target vehicle:

[0057]

[0058] Among them, P 发动机represents the engine driving power of the target vehicle, η T represents the transmission coefficient, m represents the target vehicle weight, g represents gravity, f represents the rolling resistance coefficient, v eng Indicates the maximum speed of the target vehicle in engine driving mode, C D represents the air resistance coefficient, and A represents the frontal area corresponding to the target vehicle.

[0059] Furthermore, according to the difference between the hybrid driving power and the engine driving power, the driving power to be used corresponding to the target vehicle at the highest vehicle speed can be obtained.

[0060] S130, determining the recovery power to be compared of the target vehicle under at least one test condition, and determining the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared.

[0061] The recovery power to be compared can be understood as the motor recovery power of the target vehicle under different test conditions. The test conditions include at least one of the system test conditions and the test conditions corresponding to the engine of the target vehicle overcoming friction.

[0062] It should be noted that the system test condition can be understood as the test condition corresponding to the braking system of the target vehicle, and the motor recovery power corresponding to the system test condition is the real-time recovery power of the motor. That is to say, the real-time recovery power of the motor corresponding to the target vehicle can be obtained based on the vehicle intelligent network system.

[0063] Specifically, the target vehicle has different driving powers to be compared under different test conditions, and the methods for determining the motor recovery power used are also different. In order to facilitate the distinction between driving powers to be compared under different test conditions, in the present technical solution, the motor recovery power of the target vehicle under different conditions to be used is distinguished, such as using the recovery power to be compared corresponding to the system test condition as the real-time motor recovery power, and using the motor recovery power corresponding to the test condition corresponding to the target vehicle's engine overcoming friction as the recovery power to be used. In other words, the recovery power to be compared of the target vehicle includes the real-time motor recovery power and the recovery power to be used, and the peak motor recovery power corresponding to the target vehicle is determined based on the target vehicle's reference recovery power and each recovery power to be compared.

[0064] Optionally, the recovery power to be compared includes the real-time recovery power of the motor and the recovery power to be used, and the recovery power to be compared of the target vehicle under at least one test condition is determined, and based on the recovery power to be referenced and each recovery power to be compared, the peak recovery power of the motor corresponding to the target vehicle is determined, including: determining the real-time recovery power of the motor of the target vehicle under the system test condition based on the motor recovery torque and the motor speed of the target vehicle; determining the recovery power to be used under the test condition corresponding to the engine of the target vehicle overcoming friction according to the braking recovery power and recoverable energy power corresponding to the target vehicle; and determining the maximum recovery power among the recovery power to be referenced, the real-time recovery power of the motor and the recovery power to be used as the peak recovery power of the motor corresponding to the target vehicle.

[0065] Specifically, after obtaining the motor recovery torque and multiplying it by the motor speed of the target vehicle to obtain the first product to be used, the preset constant and the motor efficiency of the target vehicle are multiplied to obtain the second product to be used, and the real-time recovery power of the motor corresponding to the target vehicle is determined based on the ratio of the first product to be used and the second product to be used. At the same time, the braking recovery power and recoverable energy of the target vehicle during the deceleration process are obtained, and the recovery power to be used of the target vehicle can be calculated. From the recovery power to be referenced, the real-time recovery power of the motor and the recovery power to be used, the maximum recovery power is determined as the peak recovery power of the motor of the target vehicle.

[0066] S140: Drive the target vehicle based on the peak driving power of the motor and the peak recovery power of the motor.

[0067] Specifically, the peak driving power of the motor and the peak recovery power of the motor are sent to the control system of the target vehicle, so that the control system calls a corresponding vehicle processing method and drives the target vehicle based on the vehicle processing method.

[0068] The vehicle handling mode can be understood as a mode of controlling the driving of the target vehicle based on the vehicle control system. Usually, the vehicle handling mode can be adjusted accordingly according to the peak driving power of the motor and the peak recovery power of the motor.

[0069] The technical solution of this embodiment is to determine the motor driving torque corresponding to the motor of the target vehicle under different working conditions to be used based on the motor peak driving torque and motor peak recovery torque of the target vehicle, and the reference driving power and reference recovery power corresponding to the target vehicle respectively, based on the vehicle dynamics function, and determine the maximum motor driving torque as the motor peak driving torque, so as to determine the motor peak driving power based on the motor peak driving torque, and at the same time, determine the motor peak recovery power corresponding to the motor of the target vehicle based on the braking system characteristics of the target vehicle, so as to determine the motor peak recovery power based on the motor peak recovery power. Determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the motor peak driving power corresponding to the target vehicle based on the reference driving power and each driving power to be compared, determine the motor driving power corresponding to the motor of the target vehicle under each corresponding working condition to be used through the to-be-used associated parameters associated with the working condition to be used and the corresponding driving power determination function, and determine the maximum motor driving power as the motor peak driving power. Determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared, and determine the maximum recovery power among the recovery power to be compared and the recovery power to be referenced under different test conditions as the peak recovery power of the motor. Drive the target vehicle to travel based on the peak driving power of the motor and the peak recovery power of the motor. The problem of inaccurate determination of the motor power of the vehicle is solved, and the effect of accurately calculating the motor power of the vehicle is achieved.

[0070] Embodiment 2

[0071] In a specific example, the power system structure of the target vehicle in the present technical solution is as follows: Figure 2 As shown in the figure, the power system is mainly composed of an engine, a motor, a power battery, a gearbox, a clutch, a drive shaft, etc. One side of the motor is connected to the engine through a clutch, and the other side of the motor is connected to the gearbox. Each component is controlled by its corresponding controller. The controllers involved are the engine control system (EMS, Engine Management System), vehicle controller (HCU, Hybrid Control Unit), motor controller (MCU, Motor Control Unit), battery management system (BMS, Battery Management System), gearbox controller (TCU, Transmission Control Unit), intelligent network system (INS, Intelligent Network System), etc. Different controllers communicate through the CAN network.

[0072] Based on the structure of the above power system, the technical solution can be used to determine the electric power of the target vehicle. During the driving process of the vehicle, the resistance it encounters includes rolling resistance F f , air resistance F w , Slope resistance F i and acceleration resistance F j etc., the driving force F of the target vehicle t Equal to the sum of the above resistances. Unlike traditional cars, the driving force F of new energy hybrid cars is t is the total torque T generated by the power source (combined engine and motor) AL The power is transmitted to the wheels through the transmission mechanism, thereby driving the target vehicle.

[0073] Among them, the dynamic equation of the vehicle can be expressed by the following formula:

[0074] F t =F f +F w +F i +F j

[0075] Among them, F t represents the driving force of the target vehicle, F f represents the rolling resistance of the target vehicle, F w represents the air resistance of the target vehicle, F i represents the slope resistance of the target vehicle on the slope road, F j Indicates the acceleration resistance of the target vehicle when accelerating.

[0076] Based on the above formula, we can deduce:

[0077]

[0078] Among them, i g represents the gearbox speed ratio of the target vehicle, i0 represents the main reducer speed ratio of the target vehicle, η T represents the powertrain efficiency of the target vehicle, r represents the wheel radius of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, C D represents the air resistance coefficient of the target vehicle, A represents the frontal area corresponding to the target vehicle, α represents the road slope of the road where the target vehicle is located, δ represents the rotational mass conversion coefficient of the target vehicle, and v represents the current speed of the target vehicle.

[0079] Taking the target vehicle as a hybrid vehicle as an example, multiply both sides of the above formula by the vehicle speed v in hybrid mode, and after unit conversion, the power balance equation of the hybrid vehicle can be obtained as shown below:

[0080]

[0081] Among them, η T represents the powertrain efficiency of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, v represents the current speed of the target vehicle, α represents the road slope of the road where the target vehicle is located, and C D represents the air resistance coefficient of the target vehicle, A represents the frontal area corresponding to the target vehicle, and δ represents the rotational mass conversion coefficient of the target vehicle.

[0082] Based on the above formula, the electric power of the target vehicle is determined by the present technical solution. Specifically, when determining the electric power of the target vehicle, it is necessary to determine it according to the peak drive power and peak recovery power of the motor of the target vehicle. The specific method for determining the peak drive power and peak recovery power of the motor is as follows.

[0083] It should be noted that in the present technical solution, the constants in all formulas are preset constants, which can be adjusted according to actual conditions. There is no specific restriction on the constants, and the preset constants in the present technical solution are only used as examples.

[0084] (1) Determine the peak drive power of the motor of the target vehicle

[0085] When determining the peak driving power of the motor of the target vehicle, it is necessary to first determine the peak driving torque of the motor of the target vehicle. Specifically, the peak driving torque of the motor can be determined based on the motor driving torque of the target vehicle under different road conditions. Figure 3 .

[0086] For example, let the maximum climbing gradient α of the target vehicle be max , the initial speed is v=0, and the first motor driving torque T of the target vehicle can be determined based on the following formula mDrv1 :

[0087]

[0088] Among them, T mDrv1 represents the first motor driving torque of the target vehicle, r represents the wheel radius of the target vehicle, i g represents the gearbox speed ratio of the target vehicle, i0 represents the main reducer speed ratio of the target vehicle, η T represents the powertrain efficiency of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, α max Indicates the maximum climbing grade of the target vehicle.

[0089] For example, the second motor driving torque of the target vehicle when starting the vehicle under a preset slope condition is determined. For example, the preset slope may be a 30% slope (corresponding to a slope of 16.5 degrees). The second motor driving torque T of the target vehicle may be determined based on the following formula: mDrv2 :

[0090] T mDrv2 =T α1 +T engST

[0091] Among them, T mDrv2 represents the second motor driving torque of the target vehicle, T α1 It represents the vehicle starting motor driving torque under the preset slope condition of the target vehicle, T engST Indicates the engine driving torque of the target vehicle.

[0092] For example, the third motor driving torque of the target vehicle at a preset vehicle speed is determined. For example, if the preset vehicle speed is 60 km / h (and considering overcoming the engine starting torque during the driving process of the target vehicle), the third motor driving torque T of the target vehicle can be determined based on the following formula: mDrv3 :

[0093] T mDrv3 =T v1 +T engST

[0094] Among them, T mDrv3 represents the third driving torque of the target vehicle, T v1 represents the motor drive torque of the target vehicle in pure motor drive mode at a preset speed; T engST Indicates the engine starting torque of the target vehicle.

[0095] After obtaining the first motor driving torque, the second motor driving torque and the third motor driving torque, the motor peak driving torque T of the target vehicle is determined based on the following formula: mDrv4 :

[0096] T mDrv4 =max(T mDrv1 , T mDrv2 , T mDrv3 )

[0097] Among them, T mDrv4 represents the peak driving torque of the motor of the target vehicle, T mDrv1 represents the first motor driving torque of the target vehicle, T mDrv2 represents the second motor driving torque of the target vehicle, T mDrv3 represents the third driving torque of the target vehicle, and max represents the maximum value in the function.

[0098] That is, from among the first motor driving torque, the second motor driving torque and the third motor driving torque, the largest motor driving torque is selected as the motor peak driving torque of the target vehicle.

[0099] For example, the reference driving power P of the target vehicle is determined according to the peak driving torque of the motor. mDrv , where the reference driving power can be determined according to the following formula:

[0100]

[0101] Among them, P mDrv Indicates the reference driving power of the target vehicle, N m Indicates the preset motor speed of the target vehicle, T mDrv4 Indicates the peak drive torque of the motor of the target vehicle.

[0102] In this technical solution, the first preset constant can be set to 9550.

[0103] For example, when determining the motor drive power of the target vehicle, it is also necessary to consider the rapid start of the engine, that is, the target vehicle overcomes the reverse drag friction torque of the engine (that is, the torque requirement when the engine is started). The reverse drag friction torque of the engine (that is, the engine starting torque T mentioned above) engST ) can be obtained by testing on a bench test (or a real vehicle rotating hub test). It is understandable that the reverse drag friction torque of the engine in a cold state is higher than that in a hot state. For example, the reverse drag torque of the engine in a cold state is 70Nm, and the reverse drag torque of the engine in a hot state is 55Nm. Other values ​​can be tested and calibrated according to the actual engine operating state. Specifically, the target vehicle can determine the first drive power to be used P1 of the target vehicle by the formula:

[0104]

[0105] Wherein, P1 represents the first driving power to be used by the target vehicle, I eng represents the rotational inertia of the engine rotating parts of the target vehicle, ω represents the angular velocity of the engine flywheel of the target vehicle, and Δt represents the time it takes for the starting engine of the target vehicle to reach the target speed.

[0106] Among them, the moment of inertia of the engine rotating parts of the target vehicle is eng It can be determined based on the following formula:

[0107]

[0108] Among them, T eng1 is the torque generated by the gas pressure during engine combustion, T engSTrepresents the engine starting torque of the target vehicle, I eng Indicates the moment of inertia of the target vehicle's engine rotating parts.

[0109] It should be noted that when the vehicle is stopped, since no combustion occurs, it can be considered that T eng1 =0, further deduction yields:

[0110]

[0111] Among them, T engST represents the engine starting torque of the target vehicle, I eng Indicates the moment of inertia of the target vehicle's engine rotating parts.

[0112] For example, when the target vehicle is in the maximum climbing condition, the maximum climbing gradient is α max , then the first driving power P2 to be compared of the target vehicle can be determined according to the vehicle in pure electric driving mode

[0113]

[0114] Wherein, P2 represents the first driving power of the target vehicle to be compared, η T represents the powertrain efficiency of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, v represents the current speed of the target vehicle, α max Indicates the maximum climbing grade of the target vehicle.

[0115] For example, if the vehicle starts at a climbing gradient α1 (such as a 30% slope, corresponding to α1=16.5 degrees), the second drive power to be compared of the target vehicle under the preset slope condition can be determined based on the following formula:

[0116]

[0117] Wherein, P3 represents the second driving power of the target vehicle to be compared, η T represents the transmission efficiency of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, v represents the current speed of the target vehicle, α1 represents the slope of the road where the target vehicle is located, and P1 represents the first drive power to be used by the target vehicle.

[0118] For example, suppose the target vehicle is traveling at a preset speed of 60 km / h in pure electric mode, that is, when the target vehicle is traveling on a flat road at a speed v1, that is, v = v1 = 60 km / h, at this time The slope is 0, and the power consumed when the engine is started is taken into consideration to determine the third driving power P4 of the target vehicle to be compared:

[0119]

[0120] Wherein, P4 represents the third driving power to be compared of the target vehicle, η T represents the powertrain efficiency of the target vehicle, m represents the weight of the target vehicle, g represents gravity, f represents the rolling resistance coefficient of the target vehicle, v1 represents the preset speed of the target vehicle, C D represents the air resistance coefficient of the target vehicle, A represents the frontal area corresponding to the target vehicle, and P1 represents the first driving power to be used of the target vehicle.

[0121] From P mDrv Among P1, P2, P3 and P4, the maximum motor driving power is selected as the motor peak driving power P5 of the target vehicle. For example, the motor peak driving power P5 can be determined based on the following formula:

[0122] P5=max(P mDrv , P2, P3, P4)

[0123] Among them, P5 represents the peak driving power of the motor of the target vehicle, P mDrv represents the reference driving power of the target vehicle, P2 represents the first driving power to be compared with the target vehicle, P3 represents the second driving power to be compared with the target vehicle, P4 represents the third driving power to be compared with the target vehicle, and max represents the maximum value in the function.

[0124] In addition, if the target vehicle is in hybrid driving mode, the impact of the target vehicle's driving mode on the motor driving power needs to be considered. That is, when the target vehicle is driving in hybrid driving mode, P5 is not the final peak motor driving power. It is also necessary to calculate the motor driving power P in hybrid driving mode. 混动 and the motor drive power P in engine drive mode 发动机 The larger motor driving power P8 is determined, and the motor peak driving power is determined based on P5 and P8.

[0125] Specifically, the target vehicle is in the engine-only driving mode, and the maximum speed is set to v eng (For example, 170 km / h, which is a known value), the maximum output power P of the vehicle can be calculated based on the maximum speed of the vehicle in the engine-only driving mode. 发动机 , that is, when the vehicle is in engine-only driving mode, with a maximum speed of v = v eng Steady driving, At this time, the road has no slope, α = 0, and the maximum output power P of the vehicle is calculated by the following formula: 发动机 , the target vehicle’s P 发动机 It can be determined based on the following formula:

[0126]

[0127] Among them, P 发动机 represents the engine driving power of the target vehicle, η T represents the transmission coefficient, m represents the target vehicle weight, g represents gravity, f represents the rolling resistance coefficient, v eng Indicates the maximum speed of the target vehicle in engine driving mode, C D represents the air resistance coefficient, and A represents the frontal area corresponding to the target vehicle.

[0128] For example, the target vehicle is in the hybrid combined driving mode, and the maximum speed is set to v h (For example, 200 km / h, this value is known), then the maximum output power P of the vehicle can be calculated based on the maximum speed of the vehicle in the hybrid combined drive mode. 混动 , that is, when the vehicle is in the combined driving mode (motor and engine jointly drive), at the maximum speed v = v h Steady driving, At this time, the road has no slope, α = 0, and the maximum output power P of the vehicle is calculated by the following formula: 混动 , the target vehicle’s P 混动 It can be determined based on the following formula:

[0129]

[0130] Among them, P 混动 represents the hybrid driving power of the target vehicle, η T represents the transmission coefficient, m represents the target vehicle weight, g represents gravity, f represents the rolling resistance coefficient, v h represents the maximum speed of the target vehicle in hybrid driving mode, C D represents the air resistance coefficient, and A represents the frontal area corresponding to the target vehicle.

[0131] By P 混动 and P 发动机 The difference between the two is used to calculate the motor drive power P8 required to meet the maximum vehicle speed:

[0132] P8=P 混动 -P 发动机

[0133] Among them, P 混动 represents the hybrid driving power of the target vehicle, P 发动机 P represents the engine driving power of the target vehicle, and P8 represents the motor driving power of the target vehicle in the motor driving mode.

[0134] The final motor peak drive power P9 is obtained by taking the larger value of P5 and P8 through the following formula:

[0135] P9=max(P5,P8)

[0136] Among them, P9 represents the peak driving power of the motor, max represents taking the maximum value of the function, P5 represents the motor driving power of the target vehicle to be compared, and P8 represents the motor driving power of the target vehicle in the motor driving mode.

[0137] (2) Determine the peak regenerative power of the motor of the target vehicle

[0138] When calculating the peak motor recovery power of the target vehicle, the maximum braking recovery deceleration a of the vehicle braking system is used. r (e.g. 2m / s 2 , which can be obtained or calibrated according to the characteristics of the braking system), the peak recovery torque T of the motor can be calculated r1 .

[0139] T r1 =(m×a r ×r×η T ) / i g i0

[0140] Among them, T r1 represents the peak regenerative torque of the motor of the target vehicle, m represents the weight of the target vehicle, and a r represents the maximum braking recovery deceleration of the target vehicle’s braking system, r represents the wheel radius of the target vehicle, and η T represents the powertrain efficiency of the target vehicle, i g represents the gearbox speed ratio of the target vehicle, and i0 represents the final reducer speed ratio of the target vehicle.

[0141] T r1 Multiply by the motor speed N m , divided by the motor efficiency η m , and then divided by the second preset constant to obtain the recovered power at the motor input end, that is, the reference recovered power P r1 , which can be determined according to the following formula:

[0142]

[0143] Among them, P r1 Indicates the target vehicle's reference recovery power, N m represents the preset speed of the motor of the target vehicle, η m represents the preset motor efficiency of the target vehicle, T r1 Indicates the peak regenerative torque of the motor.

[0144] Among them, 9549 in the above formula represents the second preset constant.

[0145] According to the big data analysis of the whole vehicle intelligent network system, the terminal equipment of the intelligent network system can collect and store the motor recovery torque and speed of the vehicle during a period of driving, and upload them to the cloud server, and then retrieve or receive the maximum motor recovery power (i.e., the real-time recovery power of the motor) sent by the intelligent network. Let the real-time recovery power of the motor be P r2 .

[0146] For standard test conditions, the test conditions are the relationship between vehicle speed and time.

[0147] By testing the vehicle on a straight road or on a rotating drum test bench, the maximum braking power under WLTC and NEDC conditions can be calculated. The recoverable power during the deceleration process of the vehicle is set as P r3 , braking power P r3 The calculation formula of vehicle speed v is

[0148]

[0149] Among them, P r3 represents the braking recovery power of the target vehicle, δ represents the rotational mass conversion coefficient of the target vehicle, m represents the weight of the target vehicle, v represents the current speed of the target vehicle, f represents the rolling resistance coefficient of the target vehicle, g represents gravity, and C D represents the air resistance coefficient of the target vehicle, and A represents the frontal area corresponding to the target vehicle.

[0150] In the process of braking energy recovery, in addition to the recoverable energy power, the engine friction torque must be overcome to do work. The recovery power to be used P is calculated by the following formula: r4 :

[0151]

[0152] Among them, P r4 represents the target vehicle's recovery power to be used, P r3 represents the braking recovery power of the target vehicle, T1 represents the time it takes for the target vehicle to overcome the engine friction torque, and n represents the engine speed of the target vehicle.

[0153] It should be noted that n in the above formula can be determined according to the following formula:

[0154]

[0155] Where n represents the engine speed of the target vehicle, v represents the current speed of the target vehicle, and i grepresents the gearbox speed ratio of the target vehicle, i0 represents the final reducer speed ratio of the target vehicle, and r represents the wheel radius of the target vehicle.

[0156] Further, based on the following formula from P r1 , P r2 and P r4 In the above example, determine the peak motor recovery power P r5 :

[0157] P r5 =max(P r1 ,P r2 ,P r4 )

[0158] Among them, P r5 represents the peak regenerative power of the motor of the target vehicle, P r1 represents the target vehicle's reference recovery power, P r2 represents the real-time recovery power of the motor of the target vehicle, P r4 represents the recovery power to be used by the target vehicle, and max represents the maximum value in the function.

[0159] After obtaining the motor peak driving power and the motor peak recovery power, the motor peak driving power and the motor peak recovery power are sent to the control system of the target vehicle to drive the target vehicle based on the control system of the target vehicle.

[0160] The technical solution of this embodiment is to determine the reference driving power and reference recovery power corresponding to the target vehicle according to the peak driving torque and peak recovery torque of the motor of the target vehicle; determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be compared and each driving power to be compared; determine the recovery power to be compared of the target vehicle under at least one test working condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; and drive the target vehicle to travel based on the peak driving power and the peak recovery power of the motor. The problem of inaccurate determination of the motor power of the vehicle is solved, and the effect of accurately calculating the motor power of the vehicle is achieved.

[0161] Embodiment 3

[0162] Figure 4 This is a schematic diagram of the structure of a vehicle electric power determination device provided in Embodiment 3 of the present invention. Figure 4 As shown, the device includes: a power determination module 210 , a peak driving power determination module 220 , a peak recovery power determination module 230 and a vehicle driving module 240 .

[0163] The power determination module 210 is used to determine the reference driving power and the reference recovery power corresponding to the target vehicle according to the peak driving torque and the peak recovery torque of the motor of the target vehicle;

[0164] The peak driving power determination module 220 is used to determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be referenced and each driving power to be compared; wherein the working condition to be used includes at least one of a maximum climbing working condition, a preset slope working condition, a driving working condition corresponding to a preset vehicle speed, and a preset power mode working condition;

[0165] The peak recovery power determination module 230 is used to determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the reference recovery power and each recovery power to be compared; wherein the test condition includes at least one of a system test condition and a test condition corresponding to the engine of the target vehicle overcoming friction;

[0166] The vehicle driving module 240 is used to drive the target vehicle based on the peak driving power of the motor and the peak recovery power of the motor.

[0167] The technical solution of this embodiment is to determine the reference driving power and reference recovery power corresponding to the target vehicle according to the peak driving torque and peak recovery torque of the motor of the target vehicle; determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be compared and each driving power to be compared; determine the recovery power to be compared of the target vehicle under at least one test working condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; and drive the target vehicle to travel based on the peak driving power and the peak recovery power of the motor. The problem of inaccurate determination of the motor power of the vehicle is solved, and the effect of accurately calculating the motor power of the vehicle is achieved.

[0168] Optionally, the vehicle electric power determination device further includes: a motor drive torque determination module, configured to determine the motor drive torque of the target vehicle under at least one to-be-used operating condition based on a vehicle dynamics function before determining the motor peak drive torque and the motor peak recovery torque of the target vehicle;

[0169] A motor peak driving torque determination module, used to determine the maximum motor driving torque from each motor driving torque as the motor peak driving torque;

[0170] The motor peak recovery torque determination module is used to determine the motor peak recovery torque according to the braking system characteristics corresponding to the target vehicle.

[0171] Optionally, the power determination module includes: a reference driving power determination unit, configured to determine the reference driving power corresponding to the target vehicle based on a peak driving torque of the motor corresponding to the target vehicle, a preset motor speed, and a first preset constant;

[0172] The reference recovery power determination unit is used to determine the reference recovery power corresponding to the target vehicle based on the motor peak recovery torque corresponding to the target vehicle, the preset motor efficiency and the second preset constant.

[0173] Optionally, the peak driving power determination module includes: a to-be-used associated parameter acquisition unit, used to acquire the to-be-used associated parameters of the target vehicle under each to-be-used working condition;

[0174] A drive power determination unit to be compared, used to process the associated parameters to be used of the corresponding working condition to be used based on the drive power determination function corresponding to each working condition to be used, so as to obtain the drive power to be compared under the corresponding working condition to be used;

[0175] The motor peak driving power determination unit is used to determine the maximum driving power from the driving powers to be referenced and the driving powers to be compared as the motor peak driving power.

[0176] Optionally, the peak driving power determination module includes: a hybrid driving power determination subunit, used to determine the hybrid driving power of the target vehicle in a hybrid driving mode; wherein the hybrid driving mode includes a motor driving mode and an engine driving mode;

[0177] an engine driving power determination subunit, for determining the engine driving power of the target vehicle in the engine driving mode;

[0178] The drive power to be used determining subunit is used to determine the drive power to be used corresponding to the target maximum vehicle speed based on the difference between the hybrid drive power and the engine drive power.

[0179] Optionally, the peak recovery power determination module includes: a motor real-time recovery power determination unit, for determining the motor real-time recovery power of the target vehicle under a preset test condition based on the motor recovery torque and the engine speed of the target vehicle;

[0180] A recovery power determination unit to be used, used to determine the recovery power to be used under a test condition corresponding to the engine of the target vehicle overcoming friction according to the braking recovery power and recoverable energy power corresponding to the target vehicle;

[0181] The motor peak recovery power determination unit is used to determine the maximum recovery power among the reference recovery power, the motor real-time recovery power and the recovery power to be used as the motor peak recovery power corresponding to the target vehicle.

[0182] Optionally, a vehicle drive module is used to send the motor peak drive power and the motor peak recovery power to the control system of the target vehicle, so that the control system calls a corresponding vehicle processing method and drives the target vehicle based on the target vehicle processing method.

[0183] The vehicle electric power determination device provided in the embodiment of the present invention can execute the vehicle electric power determination method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0184] Embodiment 4

[0185] Figure 5 A schematic diagram of the structure of an electronic device 10 of an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0186] like Figure 5 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0187] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0188] The processor 11 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a vehicle electric power determination method.

[0189] In some embodiments, the vehicle electric power determination method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the vehicle electric power determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the vehicle electric power determination method in any other appropriate manner (e.g., by means of firmware).

[0190] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0191] The computer programs for implementing the vehicle electric power determination method of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0192] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0193] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0194] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0195] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0196] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0197] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining vehicle electric power, characterized in that: include: According to the peak driving torque and peak recovery torque of the motor of the target vehicle, respectively calculating and determining the reference driving power and reference recovery power corresponding to the target vehicle; The peak driving torque of the motor is the corresponding maximum torque provided by the motor to the transmission system when the power system provides driving force to the target vehicle; the peak recovery torque of the motor is the maximum torque that can be recovered by the motor when converting kinetic energy into electrical energy during the braking process of the target vehicle; Determine the drive power to be compared of the target vehicle under at least one working condition to be used, and determine the peak drive power of the motor corresponding to the target vehicle based on the drive power to be referenced and each drive power to be compared; wherein the working condition to be used includes at least one of a maximum climbing condition, a preset slope condition, a driving condition corresponding to a preset vehicle speed, and a preset power mode condition; the drive power to be compared is the drive power of the motor determined under different working conditions to be used; the peak drive power of the motor is the maximum drive power determined from the drive power to be referenced and each drive power to be compared; Determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; wherein the test condition includes at least one of a system test condition and a test condition corresponding to the engine of the target vehicle overcoming friction; the recovery power to be compared is the recovery power of the motor of the target vehicle under different test conditions; the peak recovery power of the motor is the maximum recovery power determined from the recovery power to be referenced and each recovery power to be compared; The target vehicle is driven to travel based on the motor peak driving power and the motor peak recovery power.

2. The method according to claim 1, characterized in that Before the step of determining the peak driving torque of the motor and the peak recovery torque of the motor of the target vehicle, the method includes: Determining a motor drive torque of the target vehicle under the at least one operating condition to be used based on a vehicle dynamics function; From the driving torques of the motors, determining the maximum driving torque of the motor as the peak driving torque of the motor; The peak regenerative torque of the motor is determined according to the braking system characteristics corresponding to the target vehicle.

3. The method according to claim 1, characterized in that The respectively calculating and determining the reference driving power and the reference recovery power corresponding to the target vehicle comprises: Determining a reference driving power corresponding to the target vehicle based on a peak driving torque of the motor corresponding to the target vehicle, a preset motor speed, and a first preset constant; The reference recovery power corresponding to the target vehicle is determined based on the peak recovery torque of the motor corresponding to the target vehicle, a preset motor efficiency, and a second preset constant.

4. The method according to claim 1, characterized in that: The determining of the drive power to be compared of the target vehicle under at least one working condition to be used, and determining the peak drive power of the motor corresponding to the target vehicle based on the drive power to be referenced and each drive power to be compared, comprises: Obtaining the associated parameters to be used under each working condition to be used of the target vehicle; Based on the driving power determination function corresponding to each working condition to be used, the to-be-used associated parameter of the corresponding working condition to be used is processed to obtain the to-be-compared driving power under the corresponding working condition to be used; From the driving powers to be referenced and compared, a maximum driving power is determined as the peak driving power of the motor.

5. The method according to claim 4, characterized in that The working condition to be used is the preset power mode working condition, and the preset power mode working condition includes a hybrid drive mode working condition and an engine drive mode working condition. The processing of the associated parameters to be used of the corresponding working condition to be used to obtain the driving power to be compared under the corresponding working condition to be used includes: Determining a hybrid driving power of the target vehicle in a hybrid driving mode; wherein the hybrid driving mode includes a motor driving mode and an engine driving mode; determining an engine drive power of the target vehicle in an engine drive mode; Based on the difference between the hybrid driving power and the engine driving power, the driving power to be used corresponding to the maximum vehicle speed of the target vehicle is determined; wherein the maximum vehicle speed is the maximum vehicle speed of the target vehicle when it is running stably.

6. The method according to claim 1, characterized in that The recovery power to be compared includes the real-time recovery power of the motor and the recovery power to be used. The determining of the recovery power to be compared of the target vehicle under at least one test condition, and determining the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared, includes: Determining the real-time motor recovery power of the target vehicle under the system test condition based on the motor recovery torque and the motor speed of the target vehicle; Determine the recovery power to be used under the test condition corresponding to the engine of the target vehicle overcoming the friction force according to the braking recovery power and the recoverable energy power corresponding to the target vehicle; The maximum regenerative power among the reference regenerative power, the motor real-time regenerative power and the regenerative power to be used is determined as the motor peak regenerative power corresponding to the target vehicle.

7. The method according to claim 1, characterized in that The driving of the target vehicle based on the peak driving power of the motor and the peak recovery power of the motor includes: The motor peak driving power and the motor peak recovery power are sent to the control system of the target vehicle, so that the control system calls a corresponding vehicle processing method and drives the target vehicle based on the vehicle processing method.

8. A vehicle electric power determination device, characterized in that: include: A power determination module, configured to calculate and determine a reference driving power and a reference recovery power corresponding to the target vehicle according to a peak driving torque of the motor and a peak recovery torque of the motor of the target vehicle; The peak driving torque of the motor is the corresponding maximum torque provided by the motor to the transmission system when the power system provides driving force to the target vehicle; the peak recovery torque of the motor is the maximum torque that can be recovered by the motor when converting kinetic energy into electrical energy during the braking process of the target vehicle; A peak driving power determination module is used to determine the driving power to be compared of the target vehicle under at least one working condition to be used, and determine the peak driving power of the motor corresponding to the target vehicle based on the driving power to be referenced and each driving power to be compared; wherein the working condition to be used includes at least one of a maximum climbing condition, a preset slope condition, a driving condition corresponding to a preset vehicle speed, and a preset power mode condition; the driving power to be compared is the driving power of the motor determined under different working conditions to be used; the peak driving power of the motor is the maximum driving power determined from the driving power to be referenced and each driving power to be compared; A peak recovery power determination module is used to determine the recovery power to be compared of the target vehicle under at least one test condition, and determine the peak recovery power of the motor corresponding to the target vehicle based on the recovery power to be referenced and each recovery power to be compared; wherein the test condition includes a system test condition and at least one of the test conditions corresponding to the engine of the target vehicle overcoming friction; the recovery power to be compared is the recovery power of the motor of the target vehicle under different test conditions; the peak recovery power of the motor is the maximum recovery power determined from the recovery power to be referenced and each recovery power to be compared; The vehicle driving module is used to drive the target vehicle based on the peak driving power of the motor and the peak recovery power of the motor.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the vehicle electric power determination method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle electric power determination method according to any one of claims 1 to 7 when executed.

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