Power control method and device applied to hybrid vehicle, equipment and medium

Abstract

The application discloses a power control method and device applied to a hybrid vehicle, equipment and a medium, and the method comprises the following steps: acquiring driving information of a target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode; determining maximum driving motor power and maximum power generation power according to the target vehicle power information, and determining maximum discharge power based on the maximum driving power, the maximum power generation power and vehicle-mounted electric appliance power; determining the maximum driving power based on the maximum discharge power and engine maximum power, and adjusting the driving power of the target vehicle according to the maximum driving power. Based on the technical scheme, the maximum driving power is calculated according to the vehicle parameters, the driving power of the hybrid vehicle is adjusted based on the maximum driving power, and the technical effect of improving the safety performance of the vehicle is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle control, and in particular to a power control method and device applied to a hybrid vehicle, equipment and a medium. BACKGROUND

[0002] With the rapid development of the automobile industry, in order to ensure the safe operation of the vehicle, the running mode of the vehicle is often intelligently controlled according to the vehicle power, thereby ensuring the safety of the vehicle during driving and avoiding safety hazards caused by dangerous operation.

[0003] However, since the existing power control method is based on the power of the traditional single-energy vehicle for vehicle control, it cannot achieve precise control of the hybrid vehicle, thereby reducing the safety of the vehicle during driving. SUMMARY

[0004] The present application provides a power control method, device, equipment and medium applied to a hybrid vehicle, which determines the maximum driving power and adjusts the driving power of the hybrid vehicle based on the maximum driving power, thereby achieving the technical effect of improving the safety of the vehicle.

[0005] In a first aspect, the present application provides a power control method applied to a hybrid vehicle, which comprises:

[0006] obtaining driving information of a target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode;

[0007] wherein the driving information includes at least one of maximum running speed, maximum running slope and vehicle acceleration duration;

[0008] determining the maximum driving motor power and the maximum power generation power according to the target vehicle power information, and determining the maximum discharge power based on the maximum driving power, the maximum power generation power and the vehicle-mounted electric appliance power;

[0009] determining the maximum driving power based on the maximum discharge power and the maximum engine power, and adjusting the driving power of the target vehicle according to the maximum driving power.

[0010] In a second aspect, the present application further provides a power control device applied to a hybrid vehicle, which comprises:

[0011] a driving information acquisition module for obtaining driving information of a target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode;

[0012] The driving information includes at least one of a maximum running speed, a maximum running slope and a vehicle acceleration duration.

[0013] The power determination module is configured to determine a maximum driving motor power and a maximum power generation power according to the target vehicle power information, and determine a maximum discharging power based on the maximum driving power, the maximum power generation power and a vehicle power consumption.

[0014] The power control module is configured to determine a maximum driving power based on the maximum discharging power and an engine maximum power, and adjust a running power of the target vehicle according to the maximum driving power.

[0015] In a third aspect, an electronic device is provided, and the electronic device comprises:

[0016] at least one processor; and

[0017] a memory connected with the at least one processor; wherein

[0018] 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 execute the power control method for a hybrid vehicle according to any one of the embodiments of the present application.

[0019] In a fourth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores computer instructions for enabling a processor to implement the power control method for a hybrid vehicle according to any one of the embodiments of the present application.

[0020] The technical solution of the embodiments of the present application obtains driving information of a target vehicle in different driving modes, calculates target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in a current driving mode, determines a maximum driving motor power and a maximum power generation power according to the target vehicle power information, determines a maximum discharging power based on the maximum driving power, the maximum power generation power and a vehicle power consumption, determines a maximum driving power based on the maximum discharging power and an engine maximum power, and adjusts a running power of the target vehicle according to the maximum driving power. Based on the above technical solution, the maximum driving power is calculated according to vehicle parameters, the running power of the hybrid vehicle is adjusted based on the maximum driving power, and the technical effect of improving the safety performance of the vehicle is achieved.

[0021] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Figure 1 A flowchart of a power control method applied to a hybrid vehicle is provided for the embodiments of the present application.

[0024] Figure 2 A power system schematic diagram of a hybrid vehicle is provided for the embodiments of the present application.

[0025] Figure 3 A flowchart of a power control method applied to a hybrid vehicle is provided for the embodiments of the present application.

[0026] Figure 4 A structural block diagram of a power control device applied to a hybrid vehicle is provided for the embodiments of the present application.

[0027] Figure 5 A structural schematic diagram of an electronic device is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort should be within the scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment one

[0031] Figure 1 A flowchart of a power control method applied to a hybrid vehicle is provided for an embodiment of the present application. The embodiment can be applied to determine the maximum driving power of a vehicle according to driving information of the vehicle in different driving modes, and adjust the driving power of the vehicle according to the maximum driving power. The method can be executed by a power control device applied to a hybrid vehicle. The power control device applied to a hybrid vehicle can be implemented in the form of hardware and / or software. The device can be configured in an electronic device, which can be a PC, a server, or a vehicle-mounted computer, etc.

[0032] As shown in Figure 1 , the method comprises:

[0033] S110, obtaining driving information of a target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode.

[0034] The driving mode can be the power mode of the target vehicle, such as engine driving, electric driving, or hybrid driving. The target vehicle can be understood as a vehicle for which the maximum driving power needs to be determined. It should be noted that the power configuration of different vehicles can be different, so different vehicles correspond to different maximum powers. The driving information includes at least one of the maximum running speed, the maximum running slope, and the vehicle acceleration duration. The maximum running speed can be the highest speed that the target vehicle can reach in the current driving mode. Correspondingly, the maximum running slope can be the maximum slope that the target vehicle can run in the current driving mode. The vehicle acceleration duration can be understood as the time required for the vehicle to accelerate to a target speed. The target speed can be a pre-set speed threshold, for example, the target speed can be set to 100 km / h. The target vehicle power information can be understood as the relevant power information of the vehicle.

[0035] It should be noted that, since the hybrid vehicle is different from the traditional vehicle in terms of structure, it is necessary to determine the corresponding vehicle power information based on the driving information in different driving modes, as Figure 2As shown, the hybrid vehicle provided by the embodiment of the present application is mainly composed of a driving motor, an engine, a generator, a power battery, a transmission coupling mechanism and a clutch, etc. The double motors refer to the driving motor and the generator, and each assembly component is controlled by its corresponding controller and strategy algorithm development. The related controllers involved include a hybrid controller (HCU, Hybrid Control Unit), a motor controller (MCU, Motor Control Unit), an engine control system (EMS, Engine Management System), a generator controller (GCU, Generator Control Unit), a battery management system (BMS, Battery Management System), a vehicle-mounted T-Box (T-Box, telematics box), etc. These controllers communicate with each other through CAN network signals.

[0036] Specifically, the driving information of the target vehicle in different driving modes is acquired in advance, for example, the driving information of the target vehicle in different driving modes can be queried from the database of the server through the vehicle-mounted T-Box, or the driving information of the target vehicle in different driving modes is pre-stored in the internal memory of the vehicle, and then the driving information of the target vehicle in different driving modes is acquired from the memory when needed. After the driving information of the target vehicle in different driving modes is acquired, the power information of the target vehicle corresponding to the driving information is calculated according to the driving information of the target vehicle in different driving modes. For example, the maximum speed power can be calculated based on the maximum running speed in the engine driving mode, and the driving motor power can be calculated based on the maximum running speed in the electric driving mode.

[0037] On the basis of the above technical scheme, before the driving information of the target vehicle in different driving modes is acquired, the vehicle information of the target vehicle is also acquired, so as to determine the vehicle power information corresponding to the driving information based on the vehicle information of the target vehicle, the driving information and the power equation.

[0038] The vehicle information can be target vehicle related parameter information, such as target vehicle overall vehicle mass, full load mass, and resistance coefficient parameters. The vehicle information of the target vehicle includes transmission gear ratio, main reducer gear ratio, drive train efficiency, wheel radius, target vehicle mass, and target vehicle rotational mass conversion coefficient. The transmission gear ratio can be understood as the ratio of the rotational speed between the two transmission mechanisms before and after the transmission device in the automobile drive train. The transmission gear ratio directly affects the torque and rotational speed of the vehicle. The main reducer gear ratio can be the gear transmission ratio of the main reducer in the automobile drive axle, which is equal to the rotational angular velocity ratio of the drive shaft and the rotational angular velocity of the axle shaft, or the ratio of their rotational speeds. For example, the main reducer with a main reduction ratio of 2 rotates twice at the input end and only once at the output end. The drive train efficiency can be understood as the ratio of the output energy of the vehicle transmission mechanism to the input energy.

[0039] Specifically, before determining the corresponding vehicle power information according to the driving information of the target vehicle under different driving modes, the vehicle information of the target vehicle needs to be obtained, and then the corresponding power information is determined based on the vehicle information, the driving information of the target vehicle under different driving modes, and the power equation. For example, the related data of the target vehicle can be pre-stored in the corresponding database. When the related power needs to be calculated, the vehicle information of the target vehicle is retrieved. It should be noted that the vehicle information of the target vehicle is determined during the design process of the vehicle. When the power information of the target vehicle needs to be calculated, the related data can be retrieved from the pre-stored data.

[0040] On the basis of the above technical solution, the power equation is:

[0041] The P L is the target vehicle power information, the i g is the transmission gear ratio, the i0 is the main reducer gear ratio, the η T is the drive train efficiency, the r is the wheel radius, the m is the target vehicle mass, the f is the rolling resistance coefficient, the C is the air resistance coefficient, the A is the windward area, the a is the road slope, the d is the automobile rotational mass conversion coefficient, and the v is the target vehicle speed.

[0042] Specifically, the resistance received by the vehicle during driving includes rolling resistance F f , air resistance F w , slope resistance F i , and acceleration resistance F j . The driving force of the vehicle is equal to the sum of the above various resistances. Unlike traditional vehicles, the driving force F t of the hybrid vehicle is the total torque T generated by the power source (comprehensive engine and driving motor)L The power equation of the hybrid vehicle can be obtained by multiplying the form speed of the target vehicle on both sides of the dynamics equation t = F f + F w + F i + F j The further dynamics equation can be obtained by bringing the vehicle information of the target vehicle into the dynamics equation The power equation of the hybrid vehicle can be obtained by multiplying the form speed of the target vehicle on both sides of the dynamics equation

[0043] On the basis of the above technical solution, the driving information of the target vehicle in different driving modes is obtained, and the target vehicle power information corresponding to the driving information is calculated based on the driving information of the target vehicle in the current driving mode, comprising: obtaining the maximum running speed and the maximum running slope of the target vehicle in the engine driving mode; determining the corresponding maximum speed power and maximum climbing power based on the maximum running speed and the maximum running slope of the target vehicle; determining the maximum engine power based on the maximum speed power and the maximum climbing power.

[0044] The engine driving mode can be a driving mode in which only the engine provides driving force for the vehicle. The maximum speed power can be understood as the engine output power when the vehicle runs at the maximum speed in the engine driving mode. Correspondingly, the maximum climbing power can be understood as the engine output power when the vehicle runs at the maximum running slope in the engine driving mode. The engine maximum power information can be the maximum output power of the engine.

[0045] Specifically, when the vehicle is in the engine driving mode, let the maximum vehicle speed be v e-max If the maximum running speed of the target vehicle in the engine driving mode is 160km / h, the maximum power P eng1-max of the engine can be calculated according to the maximum vehicle speed in the engine driving mode. e-max When the vehicle runs at the maximum speed v = v eng1-max , Further, when the vehicle is in the engine driving mode, let the maximum climbing slope of the vehicle be α max , the maximum climbing power P eng2-max can be calculated according to the maximum running slope of the vehicle in the engine driving mode. When the target vehicle runs at the maximum climbing slope at the vehicle speed v 1, Substitute the above data into the power equation to obtain Further, after obtaining the maximum speed power and the maximum climbing power of the target vehicle, the maximum of the two maximum powers is taken as the engine maximum power information P eng3-max , P eng3-max = max(P eng1-max , P eng2-max )

[0046] On the basis of the above technical solution, the driving information of the target vehicle in different driving modes is obtained, and the target vehicle power information corresponding to the driving information is calculated based on the driving information of the target vehicle in the current driving mode, comprising: obtaining the maximum running speed of the target vehicle in the electric driving mode; determining the corresponding driving motor power based on the maximum running speed of the target vehicle in the electric driving mode.

[0047] Among them, the electric driving mode can be a driving mode in which the driving motor provides driving for the target vehicle. The motor power information can be understood as the driving motor power of the target vehicle running at the maximum running speed in the electric driving mode.

[0048] Specifically, when the vehicle is in the electric driving mode, the maximum running speed in the electric driving mode is obtained as v m-max , for example, it can be 80km / h, then the maximum power P mot1-max of the driving motor can be calculated according to the maximum running speed of the target vehicle in the electric driving mode, that is, when the target vehicle runs at the highest speed v=v m-max in the electric driving mode, at this time and at this time the road has no slope, α=0, the above data is brought into the power equation to obtain the motor power information P mot1-max ,

[0049] On the basis of the above technical solution, the driving information of the target vehicle in different driving modes is obtained, and the target vehicle power information corresponding to the driving information is calculated based on the driving information of the target vehicle in the current driving mode, comprising: obtaining the maximum running speed of the target vehicle in the hybrid driving mode and the vehicle acceleration time; determining the maximum running speed power and the acceleration power based on the maximum running speed of the target vehicle in the hybrid driving mode and the vehicle acceleration time.

[0050] The mixed driving mode can be a driving mode in which the engine and the driving motor simultaneously provide driving force for the target vehicle. The vehicle acceleration time can be understood as the time required for the vehicle to accelerate to a preset speed, for example, the time required for the vehicle to accelerate from 0 to 100 km / h is the hundred-kilometer acceleration time. The maximum running speed power can be understood as the driving power of the target vehicle when running at the maximum running speed in the mixed driving mode. Correspondingly, the acceleration power can be the driving power of the target vehicle when accelerating to the preset speed in the mixed driving mode.

[0051] Specifically, when the target vehicle is in the mixed driving mode, the highest speed of the target vehicle is v h-max , for example, 200 km / h, the maximum running speed power P sys-max of the vehicle can be calculated according to the highest speed of the target vehicle in the mixed driving mode, that is, when the target vehicle is in the mixed driving mode and travels at the highest speed v = v h-max , at this time , and at this time the road has no slope and a = 0, the above data is substituted into the power equation to obtain the maximum output power P sys-max of the vehicle. It should be noted that the mixed driving mode can provide more sufficient driving force for the vehicle, so the maximum running speed in the mixed driving mode is greater than the maximum running speed in the engine driving mode, and the maximum running speed in the engine driving mode is greater than the maximum running speed in the electric driving mode, that is, v h-max > v e-max > v m-max . Further, according to the vehicle acceleration time of the target vehicle in the mixed driving mode, that is, the time required for the vehicle to accelerate from 0 to a preset speed, assuming that the preset speed v d = 100 km / h, the acceleration power P veh-max is obtained by substituting the above data into the power equation. It should be noted that d is a rotational mass conversion coefficient, for example, it can be taken as 1, t is the vehicle acceleration time, which has been obtained in the design process of the vehicle, for example, the hundred-kilometer acceleration time of the target vehicle can be 8 s, and x is a fitting coefficient, for example, it can be set to 0.5.

[0052] S120, according to the target vehicle power information, determine the maximum driving motor power and the maximum power generation power, and determine the maximum discharge power based on the maximum driving motor power, the maximum power generation power and the vehicle-mounted electrical appliance power.

[0053] The maximum driving motor power can be the maximum output power of the motor determined by synthesizing the power information of the vehicle in different modes. The maximum power generation can be understood as the maximum power generation of the generator in the hybrid vehicle. The vehicle-mounted electrical appliances can be electrical equipment provided in the target vehicle, such as a driving recorder, a car audio, a seat heater, a car refrigerator, and the like. Since the vehicle-mounted electrical appliances need to be powered by the power battery when working, the power of the vehicle-mounted electrical appliances needs to be obtained. The maximum discharge power can be the maximum power when the power battery is discharged.

[0054] Specifically, the maximum driving motor power and the maximum generator power of the target vehicle are determined according to the power information of the target vehicle, and then the maximum discharge power of the power battery can be determined according to the maximum driving motor power, the maximum generator power, and the power of all vehicle-mounted electrical appliances in the vehicle. For example, the maximum driving motor power P m-peak , that is, the maximum driving motor power P m-peak = max(P mot1-max , P sys-max -P eng3-max , P veh-max -P eng3-max ), and then the maximum discharge power is determined according to the maximum driving motor power, the maximum generator power, and the power of the vehicle-mounted electrical appliances.

[0055] It should be noted that in order to ensure that the maximum generator power can be correctly obtained, before determining the maximum driving motor power and the maximum generator power according to the vehicle power information, the energy conversion efficiency information corresponding to the power battery, the generator, the driving motor, and the engine of the target vehicle is obtained, and the theoretical discharge power of the target vehicle is determined based on the energy conversion efficiency information, so as to determine the maximum discharge power based on the theoretical discharge power.

[0056] The power battery can be a power supply for providing power source for the driving motor. The generator can be understood as a mechanical device for converting other forms of energy into electrical energy. Correspondingly, the driving motor can be understood as a device for converting electrical energy into mechanical energy. The energy conversion efficiency can be the ratio of each device in the target vehicle when performing energy conversion. For example, the energy conversion efficiency of the generator can be the ratio of other energy and the electrical energy obtained after conversion, and the energy conversion efficiency of the engine can be the ratio of the heat equivalent of the effective power of the engine and the heat content of the fuel consumed per unit time. The theoretical discharge power can be the theoretical maximum discharge power of the power battery in the target vehicle.

[0057] Specifically, according to the characteristics of the hybrid vehicle, the energy conversion efficiency information of each vehicle device needs to be obtained before the maximum discharge power of the power battery is obtained, the sum of the maximum output powers of the power battery and the generator needs to meet the maximum power requirement of the driving motor, and the maximum generator power can be obtained based on this It should be noted that the maximum generator power is obtained by the engine power output to the generator end to generate electricity, so Further, the maximum generator power η b is the efficiency of the power battery, η g is the efficiency of the generator, η m is the efficiency of the driving motor, and η eng is the efficiency of the engine, is the theoretical discharge power of the power battery. Therefore, after obtaining the theoretical discharge power of the power battery , the theoretical discharge power of the power battery is subtracted from the vehicle power P VehACC , and the maximum discharge power of the power battery is obtained.That is

[0058] S130, based on the maximum discharge power and the engine maximum power information, determining the maximum driving power, and adjusting the driving power of the target vehicle according to the maximum driving power.

[0059] The maximum driving power can be the maximum power that the power system of the hybrid vehicle can provide during operation. The driving power can be the actual power of the target vehicle during driving.

[0060] Specifically, the maximum discharge power and the engine maximum power information P eng3-max are superimposed to obtain the maximum driving power P SysDrv of the hybrid system, that is After obtaining the maximum driving power P SysDrv , the driving power of the target vehicle can be adjusted in real time based on the maximum driving power P SysDrv , or the vehicle driver can be prompted. For example, when the driver needs to overtake, the system judges that the required driving power is greater than the maximum driving power P SysDrv , and prompts the driver that the vehicle power cannot support this overtaking operation.

[0061] On the basis of the above technical solutions, the technical solutions provided by the present embodiment can be further described in combination with Figure 3 , as shown in Figure 3

[0062] Get the maximum speed power: Calculate the maximum engine power when running at the highest vehicle speed in engine-only drive mode;

[0063] Get the maximum climbing power: Calculate the maximum engine power when running at the maximum climbing degree in engine-only drive mode;

[0064] Get the engine maximum power information: Get the engine maximum power information by taking the maximum of the above two engine maximum powers;

[0065] Get the motor power information: Calculate the motor power information when running at the highest vehicle speed in electric drive mode;

[0066] Get the maximum running speed power: Calculate the maximum running speed power when running at the highest vehicle speed in hybrid joint drive mode;

[0067] Get the acceleration power: Calculate the acceleration power that meets the vehicle 100km acceleration time requirement in hybrid joint drive mode;

[0068] Get the maximum drive motor power: Based on the above power information, calculate the maximum drive motor power through the corresponding algorithm;

[0069] Get the maximum power generation: Based on the engine power output, calculate the maximum power generation of the generator;

[0070] Get the theoretical discharge power: Calculate the theoretical discharge power of the power battery according to the maximum drive power of the drive motor and the maximum power generation of the generator;

[0071] Get the maximum discharge power: Subtract the power consumed by the vehicle accessories from the theoretical discharge power of the power battery to get the final maximum discharge power of the power battery;

[0072] Get the maximum drive power: Superimpose the maximum engine power and the maximum discharge power to get the maximum drive power of the hybrid system, and adjust the vehicle's driving power based on the maximum drive power.

[0073] The technical scheme of the embodiment of the present application obtains driving information of a target vehicle in different driving modes, calculates target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode, determines maximum driving motor power and maximum power generation based on the target vehicle power information, determines maximum discharge power based on the maximum driving power, the maximum power generation and power of on-board electrical appliances, determines maximum driving power based on the maximum discharge power and the maximum driving motor power, and adjusts driving power of the target vehicle based on the maximum driving power. Based on the above technical scheme, maximum driving power is calculated based on vehicle parameters, driving power of a hybrid vehicle is adjusted based on the maximum driving power, and the technical effect of improving safety performance of the vehicle is achieved.

[0074] Embodiment two

[0075] Figure 4 A structural block diagram of a power control device applied to a hybrid vehicle is provided in the embodiment of the present application. The device comprises a driving information acquisition module 410, a discharge power determination module 420 and a power control module 430.

[0076] The driving information acquisition module 410 is configured to obtain driving information of a target vehicle in different driving modes, and calculate target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode.

[0077] The driving information comprises at least one of maximum running speed, maximum running slope and vehicle acceleration duration.

[0078] The discharge power determination module 420 is configured to determine maximum driving motor power and maximum power generation based on the target vehicle power information, and determine maximum discharge power based on the maximum driving power, the maximum power generation and power of on-board electrical appliances.

[0079] The power control module 430 is configured to determine maximum driving power based on the maximum discharge power and the maximum driving motor power, and adjust driving power of the target vehicle based on the maximum driving power.

[0080] On the basis of the above technical scheme, the device further comprises:

[0081] The vehicle information acquisition module is configured to obtain vehicle information of the target vehicle, so as to determine vehicle power information corresponding to the driving information based on the vehicle information of the target vehicle, the driving information and a power equation. The vehicle information of the target vehicle comprises gear ratio, main reducer speed ratio, drive train efficiency, wheel radius, target vehicle mass and target vehicle rotational mass conversion coefficient.

[0082] On the basis of the above technical solutions, the power equation is:

[0083] The P L is the target vehicle power information, the i g is a transmission gear ratio, the i0 is a main reducer gear ratio, the η T is a drive train efficiency, the r is a wheel radius, the m is a target vehicle mass, the f is a rolling resistance coefficient, the C is an air resistance coefficient, the A is a windward area, the α is a road slope, the δ is an automobile rotating mass conversion coefficient, and the v is a target vehicle driving speed.

[0084] On the basis of the above technical solutions, the driving information acquisition module is configured to acquire a maximum running speed and a maximum running slope of the target vehicle in an engine driving mode; determine a corresponding maximum speed power and a maximum climbing power based on the maximum running speed and the maximum running slope of the target vehicle; and determine an engine maximum power based on the maximum speed power and the maximum climbing power.

[0085] On the basis of the above technical solutions, the driving information acquisition module is configured to acquire a maximum running speed of the target vehicle in an electric power driving mode; determine a corresponding motor power

[0086] On the basis of the above technical solutions, the driving information acquisition module is configured to acquire a maximum running speed and a vehicle acceleration time of the target vehicle in a hybrid driving mode; and determine a maximum running speed power and an acceleration power based on the maximum running speed and the vehicle acceleration time of the target vehicle in the hybrid driving mode.

[0087] On the basis of the above technical solutions, the discharging power determination module comprises:

[0088] An efficiency information acquisition unit is configured to acquire energy conversion efficiency information corresponding to a power battery, a generator, a driving motor, and an engine of the target vehicle; determine a theoretical discharging power of the target vehicle based on the energy conversion efficiency information; and determine the maximum discharging power based on the theoretical discharging power.

[0089] The technical scheme of the embodiment of the present application obtains the driving information of the target vehicle under different driving modes, calculates the target vehicle power information corresponding to the driving information based on the driving information of the target vehicle under the current driving mode, determines the maximum driving motor power and the maximum power generation power based on the target vehicle power information, determines the maximum discharge power based on the maximum driving power, the maximum power generation power and the power of the on-board electrical appliances, determines the maximum driving power based on the maximum discharge power and the maximum driving motor power, and adjusts the driving power of the target vehicle based on the maximum driving power. Based on the above technical scheme, the maximum driving power is calculated based on the vehicle parameters, the driving power of the hybrid vehicle is adjusted based on the maximum driving power, and the technical effect of improving the safety performance of the vehicle is achieved.

[0090] The power control device applied to the hybrid vehicle provided in the embodiments of the present application can execute the power control method applied to the hybrid vehicle provided in any of the embodiments of the present application, and has the function modules and beneficial effects corresponding to the execution method.

[0091] It should be noted that each unit and module included in the above device is only divided according to the function logic, but is not limited to the above division, as long as the corresponding function can be realized; in addition, the specific name of each functional unit is only for the convenience of mutual differentiation, and does not limit the protection scope of the embodiments of the present disclosure.

[0092] Embodiment three

[0093] Figure 5 A structural schematic diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0094] As Figure 5As shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., communicatively connected to the at least one processor 11, where the memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. 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.

[0095] Various 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, a speaker, etc., a storage unit 18, such as a magnetic 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.

[0096] The processor 11 can be various general and / or special-purpose 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 special-purpose 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 performs various methods and processes described above, such as the power control method applied to a hybrid vehicle.

[0097] In some embodiments, the power control method applied to a hybrid vehicle can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto 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 power control method applied to a hybrid vehicle described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the power control method applied to a hybrid vehicle by any other appropriate means, such as by means of firmware.

[0098] The various embodiments of the systems and techniques described above can be implemented in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0099] Computer programs used to implement the processes of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program

[0100] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store computer programs for use by or in connection with an instruction execution system, apparatus, or device. Computer-readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium will include one or more lines of electrical connections, portable computer disks, hard disk drives, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or Flash memory), optical fibers, portable compact disc read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0101] To provide for interaction with a user, the systems and techniques described here can 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 a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0102] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can 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.

[0103] The computer system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server is generally established using computer programs running on the respective computers and having a client-server relationship to each other. A server can 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 large management difficulty and weak business scalability in traditional physical host and VPS service.

[0104] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in sequence, or executed in a different order, as long as the desired results of the present disclosure are achieved, and the present disclosure is not limited herein.

[0105] The specific embodiments described above are not intended to be limiting, and persons skilled in the art will appreciate that various modifications, combinations, sub-combinations and alternatives can be made to the specific embodiments without departing from the spirit and principles of the disclosure. Accordingly, the disclosure is not limited to the specific embodiments described above, but only by the scope of the appended claims.

Claims

1. A power control method applied to a hybrid vehicle, characterized by, The method comprises: obtaining driving information of the target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode; wherein the driving information comprises at least one of maximum running speed, maximum running slope and vehicle acceleration duration; determining maximum driving motor power and maximum power generation power based on the target vehicle power information, and determining maximum discharge power based on the maximum driving motor power, the maximum power generation power and vehicle electrical appliance power; determining maximum driving power based on the maximum discharge power and engine maximum power, and adjusting the driving power of the target vehicle according to the maximum driving power; before the step of determining the maximum driving motor power and the maximum power generation power based on the vehicle power information, the method further comprises: obtaining energy conversion efficiency information corresponding to the power battery, the generator, the driving motor and the engine of the target vehicle; determining theoretical discharge power of the target vehicle based on the energy conversion efficiency information, so as to determine the maximum discharge power based on the theoretical discharge power, The theoretical discharge power is obtained by a calculation equation, and the calculation equation is: wherein, is the efficiency of the power battery, is the efficiency of the generator, is the efficiency of the driving motor, is the theoretical discharge power of the power battery, is the maximum generator power, is the maximum driving motor power.

2. The method of claim 1, wherein, before the step of obtaining the driving information of the target vehicle in different driving modes, the method further comprises: obtaining vehicle information of the target vehicle, so as to determine vehicle power information corresponding to the driving information based on the vehicle information of the target vehicle, the driving information and a power equation; wherein the vehicle information of the target vehicle comprises gearbox speed ratio, main reducer speed ratio, drive train efficiency, wheel radius, target vehicle mass and target vehicle rotational mass conversion coefficient.

3. The method of claim 2, wherein, The power equation is: ； Among them, the The target vehicle power information, the For the gearbox ratio, the The main reducer speed ratio, the The transmission system efficiency is given by r, where r is the wheel radius and m is the target vehicle mass. Where C is the rolling resistance coefficient, A is the air resistance coefficient, and C is the frontal area. For the road slope, the aforementioned The vehicle rotational mass conversion factor is the coefficient described above. The target vehicle's speed.

4. The method of claim 1, wherein, The step of obtaining the driving information of the target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode, comprises: obtaining maximum running speed and maximum running slope of the target vehicle in the engine driving mode; determining corresponding maximum speed power and maximum climbing power based on the maximum running speed and the maximum running slope of the target vehicle; determining the engine maximum power based on the maximum speed power and the maximum climbing power.

5. The method of claim 1, wherein, The step of obtaining the driving information of the target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode, comprises: obtaining maximum running speed of the target vehicle in the electric driving mode; determining corresponding driving motor power based on the maximum running speed of the target vehicle in the electric driving mode.

6. The method of claim 1, wherein, The step of obtaining the driving information of the target vehicle in different driving modes, and calculating target vehicle power information corresponding to the driving information based on the driving information of the target vehicle in the current driving mode, comprises: obtaining maximum running speed and vehicle acceleration time of the target vehicle in the hybrid driving mode; determining maximum running speed power and acceleration power based on the maximum running speed and the vehicle acceleration duration of the target vehicle in the hybrid driving mode.

7. A power control device applied to a hybrid vehicle, characterized by, The method comprises: The drive information acquisition module is configured to acquire drive information of the target vehicle in different drive modes, and calculate target vehicle power information corresponding to the drive information based on the drive information of the target vehicle in a current drive mode. The drive information includes at least one of a maximum running speed, a maximum running slope, and a vehicle acceleration duration. The discharging power determination module is configured to determine a maximum drive motor power and a maximum power generation power based on the target vehicle power information, and determine a maximum discharging power based on the maximum drive motor power, the maximum power generation power, and a vehicle-mounted electric appliance power. The power control module is configured to determine a maximum drive power based on the maximum discharging power and an engine maximum power, and adjust a driving power of the target vehicle according to the maximum drive power. The discharging power determination module includes: An efficiency information acquisition unit is configured to acquire energy conversion efficiency information corresponding to a power battery, a generator, a drive motor and an engine of the target vehicle; determine a theoretical discharge power of the target vehicle based on the energy conversion efficiency information, so as to determine the maximum discharge power based on the theoretical discharge power; wherein the theoretical discharge power is obtained by a calculation equation, and the calculation equation is: wherein, ηb is the efficiency of the power battery, ηg is the efficiency of the generator, ηm is the efficiency of the drive motor, Pb is the theoretical discharge power of the power battery, Pg is the maximum generator power, Pm is the maximum drive motor power.

8. An electronic device, comprising: The electronic device includes: one or more processors; and a memory connected with the at least one processor in communication; 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 execute the power control method for a hybrid vehicle according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the power control method for a hybrid vehicle according to any one of claims 1-6 when executed.

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