Control method and device of electric vehicle, readable storage medium and electric vehicle

Abstract

The invention discloses a control method and device of an electric vehicle, a readable storage medium and the electric vehicle, and relates to the technical field of new energy vehicles. The control method of the electric vehicle comprises the following steps: obtaining the whole vehicle electric power of the electric vehicle, and obtaining the electric quantity ratio between a first battery and a second battery; determining a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the electric power of the whole vehicle and the electric quantity ratio; determining a first target power and a second target power according to the electric power of the whole vehicle, the electric quantity ratio, the first preset power and the second preset power; output powers of the first battery and the second battery are respectively set as a first target power and a second target power. The accuracy of the output power of the first battery and the second battery is ensured, the situation of sudden power change of the first battery and the second battery is avoided, and the service life of the first battery and the second battery is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a control method and device for an electric vehicle, a readable storage medium and an electric vehicle. Background Art

[0002] At present, new energy vehicles have dual front and rear power batteries. During the driving process of new energy vehicles, the output power of the dual front and rear power batteries needs to be controlled separately to ensure that the output power of the dual front and rear power batteries can meet the power consumption of the entire vehicle. However, the existing control methods of electric vehicles have technical problems such as inaccurate adjustment of battery output power. Summary of the invention

[0003] The embodiments of the present application provide a control method, a device, a readable storage medium and an electric vehicle for an electric vehicle, which are used to solve technical problems such as inaccurate adjustment of battery output power in the prior art.

[0004] In a first aspect of an embodiment of the present application, a control method for an electric vehicle is provided. The control method for an electric vehicle includes:

[0005] Obtaining the whole vehicle power consumption of the electric vehicle, and obtaining the power ratio between the first battery and the second battery;

[0006] Determine a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and power ratio;

[0007] Determine a first target power and a second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power;

[0008] The output powers of the first battery and the second battery are set to the first target power and the second target power, respectively.

[0009] In this embodiment, the whole vehicle power consumption of the electric vehicle is obtained, wherein the electric vehicle refers to a vehicle that uses an on-board power supply as a power source, drives the wheels with an electric motor, and complies with various requirements of road traffic and safety regulations. The whole vehicle power consumption is the total power to ensure the normal operation of the electric vehicle.

[0010] Exemplarily, the electric vehicle may be a special electric vehicle, which may include a plurality of batteries as a power source.

[0011] The electric vehicle comprises a first battery and a second battery, and the first battery and the second battery are power sources of the electric vehicle.

[0012] Exemplarily, the first battery may be a front power battery of an electric vehicle.

[0013] Exemplarily, the second battery may be a rear power battery of an electric vehicle.

[0014] A power ratio between the first battery and the second battery is obtained, wherein the power ratio represents a proportion of the power of the first battery to that of the second battery.

[0015] Data processing is performed on the vehicle power consumption and power ratio to obtain a first preset power corresponding to the first battery and a second preset power corresponding to the second battery, wherein the first preset power is a preset discharge power corresponding to the first battery, and the second preset power is a preset discharge power corresponding to the second battery.

[0016] Exemplarily, the first preset power is the steady-state discharge power corresponding to the first battery.

[0017] Exemplarily, the second preset power is the steady-state discharge power corresponding to the second battery.

[0018] Data processing is performed on the vehicle power consumption, power ratio, first preset power and second preset power to obtain a first target power corresponding to the first battery and a second target power corresponding to the second battery, wherein the first target power is the target power corresponding to the first battery and the second target power is the target power corresponding to the second battery.

[0019] Exemplarily, the first target power may be a target output power corresponding to the first battery.

[0020] Exemplarily, the second target power may be a target output power corresponding to the second battery.

[0021] The output power of the first battery is set as the first target power, and the output power of the second battery is set as the second target power.

[0022] Exemplarily, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power to meet the entire vehicle power consumption of the electric vehicle.

[0023] It should be noted that, based on data such as the vehicle's power consumption, power ratio, first preset power and second preset power, the first target power corresponding to the first battery and the second target power corresponding to the second battery are respectively determined, thereby ensuring the data accuracy of the first target power and the second target power. At the same time, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery.

[0024] The control method of the electric vehicle in the present embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery according to data such as the whole vehicle power consumption, the power ratio, the first preset power and the second preset power, respectively, thereby ensuring the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the working life of the first battery and the second battery.

[0025] In some embodiments, determining the first target power and the second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power includes:

[0026] Get the preset time point;

[0027] Respectively obtain a first historical power of the first battery at a preset time point and a second historical power of the second battery at a preset time point;

[0028] Determine a first power difference corresponding to the first battery and a second power difference corresponding to the second battery according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power;

[0029] A first target power and a second target power are determined according to the first power difference, the second power difference, the first historical power, the second historical power and the whole vehicle power.

[0030] In some embodiments, determining a first power difference corresponding to the first battery and a second power difference corresponding to the second battery according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power includes:

[0031] Calculate the difference between the first preset power and the first historical power to obtain a third power difference, and calculate the difference between the second preset power and the second historical power to obtain a fourth power difference;

[0032] determining a fifth power difference corresponding to the first battery according to the third power difference and the power ratio;

[0033] determining a sixth power difference corresponding to the second battery according to the third power difference, the fourth power difference and the power ratio;

[0034] Acquire a first maximum discharge power of the first battery and a second maximum discharge power of the second battery;

[0035] determining a seventh power difference corresponding to the second battery according to the first maximum discharge power, the second maximum discharge power and the power ratio;

[0036] determining an eighth power difference corresponding to the first battery according to the seventh power difference and the power ratio;

[0037] Determining a first power difference value according to the fifth power difference value and the eighth power difference value;

[0038] A second power difference value is determined according to the sixth power difference value and the seventh power difference value.

[0039] In some embodiments, determining the first target power and the second target power according to the first power difference, the second power difference, the first historical power, the second historical power and the vehicle power consumption includes:

[0040] Determining a first target power according to the first power difference and the first historical power;

[0041] A second target power is determined according to the second power difference and the second historical power.

[0042] In some embodiments, after determining the second target power according to the second power difference and the second historical power, the method further includes:

[0043] Determining a third target power according to the first target power, the second target power and the vehicle power consumption;

[0044] The output power of the supercapacitor is set to a third target power.

[0045] In some embodiments, obtaining the whole vehicle power consumption of the electric vehicle includes:

[0046] Obtaining a motor torque, a motor speed, and a motor quantity of at least one drive motor;

[0047] The electrical power consumption of the whole vehicle is determined based on the motor torque, motor speed and number of motors.

[0048] In some embodiments, obtaining a power ratio between the first battery and the second battery includes:

[0049] Detecting the real-time power level of the first battery to obtain a first power level;

[0050] Detecting the real-time power level of the second battery to obtain a second power level;

[0051] The ratio of the first electric quantity to the second electric quantity is calculated to obtain an electric quantity ratio.

[0052] In some embodiments, determining a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and power ratio includes:

[0053] Determine a first coefficient and a second coefficient according to the power ratio;

[0054] Determining a first preset power according to the first coefficient and the electric power consumption of the whole vehicle;

[0055] The second preset power is determined according to the second coefficient and the electrical power consumption of the entire vehicle.

[0056] According to a second aspect of an embodiment of the present application, a control device for an electric vehicle is provided. The control device for an electric vehicle includes:

[0057] An acquisition unit, used to acquire the whole vehicle power consumption of the electric vehicle and acquire the power ratio between the first battery and the second battery;

[0058] A processing unit, configured to determine a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and the power ratio;

[0059] The processing unit is further used to determine the first target power and the second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power;

[0060] The control unit is used to set the output power of the first battery and the second battery to the first target power and the second target power respectively.

[0061] In a third aspect of the embodiments of the present application, another electric vehicle control device is provided, comprising a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the electric vehicle control method in any of the above embodiments are implemented. Therefore, the electric vehicle control device has all the beneficial effects of the electric vehicle control method in any of the above embodiments, which will not be described in detail here.

[0062] In a fourth aspect of the embodiments of the present application, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the electric vehicle control method in any of the above embodiments are implemented. Therefore, the readable storage medium has all the beneficial effects of the electric vehicle control method in any of the above embodiments, which will not be repeated here.

[0063] According to a fifth aspect of the present invention, an electric vehicle is proposed, comprising: a control device for the electric vehicle as defined in the second aspect above, or the control device for the electric vehicle as defined in the third aspect above, and / or a readable storage medium as defined in the fourth aspect above, and thus having all the beneficial technical effects of the control device for the electric vehicle as defined in the second aspect above, or the control device for the electric vehicle as defined in the third aspect above, and / or the readable storage medium as defined in the fourth aspect above, which will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0065] Figure 1 A flow chart of a control method for an electric vehicle provided in an embodiment of the present application;

[0066] Figure 2 A functional module block diagram of a control device for an electric vehicle provided in an embodiment of the present application;

[0067] Figure 3 This is a structural block diagram of the control device of the electric vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0068] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0069] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0070] In some embodiments, Figure 1 A flow chart of a control method for an electric vehicle provided in an embodiment of the present application, such as Figure 1 As shown, a control method for an electric vehicle is proposed, and the control method for the electric vehicle includes:

[0071] Step S101, obtaining the whole vehicle power consumption of the electric vehicle, and obtaining the power ratio between the first battery and the second battery.

[0072] In this embodiment, the whole vehicle power consumption of the electric vehicle is obtained, wherein the electric vehicle refers to a vehicle that uses an on-board power supply as a power source, drives the wheels with an electric motor, and complies with various requirements of road traffic and safety regulations. The whole vehicle power consumption is the total power to ensure the normal operation of the electric vehicle.

[0073] Exemplarily, the electric vehicle may be a special electric vehicle, which may include a plurality of batteries as a power source.

[0074] The electric vehicle comprises a first battery and a second battery, and the first battery and the second battery are power sources of the electric vehicle.

[0075] Exemplarily, the first battery may be a front power battery of an electric vehicle.

[0076] Exemplarily, the second battery may be a rear power battery of an electric vehicle.

[0077] A power ratio between the first battery and the second battery is obtained, wherein the power ratio represents a proportion of the power of the first battery to that of the second battery.

[0078] Step S102, determining a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and the power ratio.

[0079] Data processing is performed on the vehicle power consumption and power ratio to obtain a first preset power corresponding to the first battery and a second preset power corresponding to the second battery, wherein the first preset power is a preset discharge power corresponding to the first battery, and the second preset power is a preset discharge power corresponding to the second battery.

[0080] Exemplarily, the first preset power is the steady-state discharge power corresponding to the first battery.

[0081] Exemplarily, the second preset power is the steady-state discharge power corresponding to the second battery.

[0082] Step S103, determining a first target power and a second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power.

[0083] Data processing is performed on the vehicle power consumption, power ratio, first preset power and second preset power to obtain a first target power corresponding to the first battery and a second target power corresponding to the second battery, wherein the first target power is the target power corresponding to the first battery and the second target power is the target power corresponding to the second battery.

[0084] Exemplarily, the first target power may be a target output power corresponding to the first battery.

[0085] Exemplarily, the second target power may be a target output power corresponding to the second battery.

[0086] Step S104: setting the output powers of the first battery and the second battery to the first target power and the second target power respectively.

[0087] The output power of the first battery is set as the first target power, and the output power of the second battery is set as the second target power.

[0088] Exemplarily, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power to meet the entire vehicle power consumption of the electric vehicle.

[0089] It should be noted that, based on data such as the vehicle's power consumption, power ratio, first preset power and second preset power, the first target power corresponding to the first battery and the second target power corresponding to the second battery are respectively determined, thereby ensuring the data accuracy of the first target power and the second target power. At the same time, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery.

[0090] The control method of the electric vehicle in the present embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery according to data such as the whole vehicle power consumption, the power ratio, the first preset power and the second preset power, respectively, thereby ensuring the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the working life of the first battery and the second battery.

[0091] In some embodiments, a control method for an electric vehicle is proposed, which determines a first target power and a second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power, including:

[0092] Step S201, obtaining a preset time point.

[0093] In this embodiment, a preset time point is acquired, wherein the preset time point is a preset power setting time point.

[0094] Exemplarily, the preset time point may be a time point at which the first battery output power is set in history.

[0095] Exemplarily, the preset time point may be a time point at which the second battery output power is set in history.

[0096] Exemplarily, the preset time point may be a time point at which the output power of the first battery and the second battery are set simultaneously in history.

[0097] Step S202 , respectively obtaining a first historical power of the first battery at a preset time point and a second historical power of the second battery at a preset time point.

[0098] A first historical power of a first battery at a preset time point is obtained, and a second historical power of a second battery at a preset time point is obtained, wherein the first historical power is the output power set for the first battery at the preset time point, and the second historical power is the output power set for the second battery at the preset time point.

[0099] Exemplarily, the preset time point may be the last set time of the first battery and the second battery, the first historical power is the output power of the first battery at the last set time, and the second historical power is the output power of the second battery at the last set time.

[0100] Step S203, determining a first power difference corresponding to the first battery and a second power difference corresponding to the second battery according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power.

[0101] Data processing is performed on the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power to obtain a first power difference corresponding to the first battery and a second power difference corresponding to the second battery, wherein the first power difference represents the power change amplitude of the first battery, and the second power difference represents the power change amplitude of the second battery.

[0102] Exemplarily, the first power difference value may represent a discharge power difference of the first battery.

[0103] Exemplarily, the second power difference value may represent a discharge power difference of the second battery.

[0104] Step S204, determining a first target power and a second target power according to the first power difference, the second power difference, the first historical power, the second historical power and the whole vehicle power.

[0105] Data processing is performed on the first power difference, the second power difference, the first historical power, the second historical power and the whole vehicle power consumption to obtain the first target power and the second target power.

[0106] The control method of the electric vehicle in the present embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery according to data such as the first power difference, the second power difference, the first historical power, the second historical power and the whole vehicle power consumption, respectively, thereby ensuring the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the service life of the first battery and the second battery.

[0107] In some embodiments, a control method for an electric vehicle is proposed, which determines a first power difference corresponding to a first battery and a second power difference corresponding to a second battery according to a power ratio, a first preset power, a second preset power, a first historical power, and a second historical power, including:

[0108] Step S301, calculating the difference between the first preset power and the first historical power to obtain a third power difference, and calculating the difference between the second preset power and the second historical power to obtain a fourth power difference.

[0109] In this embodiment, a difference between the first preset power and the first historical power is determined to obtain a third power difference, wherein the third power difference represents a difference between the first preset power and the first historical power.

[0110] A difference between the second preset power and the second historical power is determined to obtain a fourth power difference, wherein the fourth power difference represents a difference between the second preset power and the second historical power.

[0111] Exemplarily, the third power difference value may specifically be a real-time difference in discharge power of the front power battery.

[0112] Exemplarily, the fourth power difference value may specifically be a real-time difference in discharge power of the rear power battery.

[0113] Exemplarily, the calculation formulas for the third power difference and the fourth power difference are:

[0114]

[0115] Where ΔP f is the third power difference, ΔP r is the fourth power difference, P1 f is the first preset power, P1 r is the second preset power, P(k-1) f is the first historical power, P(k-1) r is the second historical power, and k represents a preset time point.

[0116] Step S302: determining a fifth power difference corresponding to the first battery according to the third power difference and the power ratio.

[0117] Data processing is performed on the third power difference and the power ratio to obtain a fifth power difference corresponding to the first battery.

[0118] Exemplarily, the fifth power difference value may be the first discharge power difference of the front power battery.

[0119] Step S303: determining a sixth power difference corresponding to the second battery according to the third power difference, the fourth power difference and the power ratio.

[0120] Data processing is performed on the third power difference, the fourth power difference and the power ratio to obtain a sixth power difference corresponding to the second battery.

[0121] Exemplarily, the sixth power difference may be the first discharge power difference of the rear power battery.

[0122] Exemplarily, the calculation formulas for the fifth power difference and the sixth power difference are:

[0123]

[0124] Among them, ΔP1 f is the fifth power difference, ΔP1 r is the sixth power difference, β is the power ratio, ΔP f is the third power difference, ΔP r is the fourth power difference.

[0125] Step S304: acquiring a first maximum discharge power of the first battery and a second maximum discharge power of the second battery.

[0126] A first maximum discharge power of the first battery and a second maximum discharge power of the second battery are obtained, wherein the first maximum discharge power is the maximum value of the discharge power of the first battery, and the second maximum discharge power is the maximum value of the discharge power of the second battery.

[0127] Exemplarily, the first maximum discharge power may be a discharge power limit value of the front power battery.

[0128] Exemplarily, the second maximum discharge power may be a discharge power limit value of the rear power battery.

[0129] Step S305: determining a seventh power difference corresponding to the second battery according to the first maximum discharge power, the second maximum discharge power and the power ratio.

[0130] Data processing is performed on the first maximum discharge power, the second maximum discharge power, and the power ratio to obtain a seventh power difference corresponding to the second battery.

[0131] Exemplarily, the seventh power difference value may represent a second discharge power difference of the rear power battery.

[0132] Step S306: Determine an eighth power difference corresponding to the first battery according to the seventh power difference and the power ratio.

[0133] The seventh power difference and the power ratio are processed to obtain an eighth power difference corresponding to the first battery.

[0134] Exemplarily, the eighth power difference value may represent the second discharge power difference of the front power battery.

[0135] Exemplarily, the calculation formulas for the seventh power difference and the eighth power difference are:

[0136]

[0137] Among them, ΔP2 f is the eighth power difference, ΔP2 r is the seventh power difference, β is the power ratio, ΔP fmax is the first maximum discharge power, ΔP rmax is the second maximum discharge power.

[0138] Step S307: determining a first power difference value according to the fifth power difference value and the eighth power difference value.

[0139] Data processing is performed on the fifth power difference value and the eighth power difference value to obtain a first power difference value.

[0140] Step S308: Determine a second power difference value according to the sixth power difference value and the seventh power difference value.

[0141] Data processing is performed on the sixth power difference value and the seventh power difference value to obtain a second power difference value.

[0142] Exemplarily, the second discharge power difference of the front power battery is equal to the smaller value of the first discharge power difference of the front power battery and the second discharge power difference of the front power battery; the second discharge power difference of the rear power battery is equal to the smaller value of the first discharge power difference of the rear power battery and the second discharge power difference of the rear power battery.

[0143] Exemplarily, the calculation formula of the first power difference and the second power difference is:

[0144]

[0145] Among them, ΔP3 fis the first power difference, ΔP3 r is the second power difference, ΔP2 f is the eighth power difference, ΔP2 r is the seventh power difference, ΔP1 f is the fifth power difference, ΔP1 r is the sixth power difference.

[0146] The control method of the electric vehicle in the present embodiment ensures the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power, and sets the output power of the second battery to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the working life of the first battery and the second battery.

[0147] In some embodiments, a control method for an electric vehicle is proposed, which determines a first target power and a second target power according to a first power difference, a second power difference, a first historical power, a second historical power and the whole vehicle power, including:

[0148] Step S401: determining a first target power according to a first power difference and a first historical power.

[0149] In this embodiment, data processing is performed on the first power difference and the first historical power to obtain the first target power of the first battery.

[0150] Step S402: Determine a second target power according to the second power difference and the second historical power.

[0151] Data processing is performed on the second power difference and the second historical power to obtain a second target power of the second battery.

[0152] The control method of the electric vehicle in this embodiment sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery and avoiding power fluctuations of the first battery and the second battery.

[0153] In some embodiments, a control method for an electric vehicle is provided. After determining a second target power according to a second power difference and a second historical power, the method further includes:

[0154] Step S501, determining a third target power according to the first target power, the second target power and the whole vehicle power consumption.

[0155] In this embodiment, the electric vehicle further includes a supercapacitor, which is used to supplement the output power of the first battery and the second battery.

[0156] Exemplarily, the supercapacitor, the first battery and the second battery are in parallel structure.

[0157] Data processing is performed on the first target power, the second target power and the electric power of the whole vehicle to obtain a third target power of the supercapacitor, wherein the third target power is a target output power of the supercapacitor.

[0158] Step S502: setting the output power of the supercapacitor to a third target power.

[0159] The output power of the supercapacitor is set to the third target power to supplement the output power of the first battery and the second battery to meet the entire vehicle power consumption of the electric vehicle.

[0160] Exemplarily, the calculation formulas for the first target power, the second target power, and the third target power are:

[0161]

[0162] Among them, k represents the current time, P(k) f is the first target power, P(k) r is the second target power, P(k) c is the third target power, P(k-1) f is the first historical power, P(k-1)r is the second historical power, ΔP3 f is the first power difference, ΔP3 r is the second power difference, s(ΔP f ) and s(ΔP r ) is the positive and negative sign, P 总 The electrical power of the whole vehicle.

[0163] If P(k) f is greater than or equal to 0, then s(ΔP f ) is equal to 1, if P(k) f is less than 0, then s(ΔP f ) is equal to -1; if P(k) r is greater than or equal to 0, then s(ΔP r ) is equal to 1, if P(k) r is less than 0, then s(ΔP r ) is equal to -1.

[0164] The control method of the electric vehicle in this embodiment obtains the third target power of the supercapacitor by processing the first target power, the second target power and the whole vehicle power consumption, and sets the output power of the supercapacitor to the third target power to supplement the output power of the first battery and the second battery to meet the whole vehicle power consumption of the electric vehicle, thereby improving the operating stability of the electric vehicle.

[0165] In some embodiments, a control method of an electric vehicle is proposed to obtain the whole vehicle power of the electric vehicle, including:

[0166] Step S601, obtaining the motor torque, motor speed and number of motors of at least one driving motor.

[0167] In this embodiment, the electric vehicle also includes at least one drive motor, which is used to drive the electric vehicle to operate, and the motor torque, motor speed and number of motors of at least one drive motor are obtained, wherein the motor torque is the torque parameter of the drive motor, and the motor speed is the speed parameter of the drive motor.

[0168] Exemplarily, an electric vehicle may include two drive motors.

[0169] Step S602, determining the electric power consumption of the entire vehicle according to the motor torque, motor speed and number of motors.

[0170] The motor torque, motor speed and number of motors are processed to obtain the whole vehicle power consumption of the electric vehicle.

[0171] For example, the calculation formula of the vehicle power consumption is:

[0172]

[0173] Among them, P 总 is the vehicle power consumption, n is the number of motors, T i represents the motor torque of the i-th drive motor, w i Represents the motor speed of the i-th drive motor.

[0174] The control method of the electric vehicle in this embodiment obtains the whole vehicle power consumption of the electric vehicle by processing the data of the motor torque, motor speed and number of motors, thereby ensuring the accuracy of the data of the whole vehicle power consumption.

[0175] In some embodiments, a control method of an electric vehicle is provided, and a power ratio between a first battery and a second battery is obtained, including:

[0176] Step S701, detecting the real-time power level of a first battery to obtain a first power level;

[0177] Step S702, detecting the real-time power level of the second battery to obtain a second power level;

[0178] Step S703, calculating the ratio of the first power quantity to the second power quantity to obtain a power quantity ratio.

[0179] In this embodiment, the real-time power of the first battery is detected to obtain the first power, and the real-time power of the second battery is detected to obtain the second power, wherein the first power represents the real-time power of the first battery and the second power represents the real-time power of the second battery.

[0180] Exemplarily, the first power level may be specifically 89%.

[0181] Exemplarily, the second power level may be specifically 87%.

[0182] The ratio of the first electric quantity to the second electric quantity is calculated to obtain an electric quantity ratio.

[0183] Exemplarily, the power ratio value may represent the instantaneous ratio of the discharge power of the front and rear power batteries.

[0184] Exemplarily, the calculation formula of the power ratio is:

[0185]

[0186] Among them, β is the power ratio, Soc f For the first power, Soc r The second electric quantity.

[0187] The control method of the electric vehicle in this embodiment obtains the power ratio by calculating the ratio of the first power and the second power, thereby ensuring the data accuracy of the power ratio.

[0188] In some embodiments, a control method for an electric vehicle is proposed, which determines a first preset power corresponding to a first battery and a second preset power corresponding to a second battery according to the vehicle power consumption and power ratio, including:

[0189] Step S801, determining a first coefficient and a second coefficient according to the power ratio;

[0190] Step S802, determining a first preset power according to the first coefficient and the electric power consumption of the whole vehicle;

[0191] Step S803, determining a second preset power according to the second coefficient and the electric power consumption of the entire vehicle.

[0192] In this embodiment, the first coefficient and the second coefficient are determined according to the power ratio, wherein the first coefficient and the second coefficient are calculation coefficients.

[0193] The first preset power is determined according to the first coefficient and the electric power of the whole vehicle, and the second preset power is determined according to the second coefficient and the electric power of the whole vehicle.

[0194] Exemplarily, the calculation formulas for the first preset power and the second preset power are:

[0195]

[0196] Among them, β is the power ratio, P 总 P1 is the vehicle power consumption, f is the first preset power, P1 r is the second preset power.

[0197] The control method of the electric vehicle in this embodiment determines the first preset power according to the first coefficient and the power consumption of the whole vehicle, and then determines the second preset power according to the second coefficient and the power consumption of the whole vehicle, thereby ensuring the data accuracy of the first preset power and the second preset power.

[0198] In some embodiments, Figure 2 The functional module block diagram of the control device of the electric vehicle provided in the embodiment of the present application is as follows: Figure 2 As shown, in an embodiment of the present application, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle includes:

[0199] An acquisition unit 902 is used to acquire the whole vehicle power consumption of the electric vehicle and acquire the power ratio between the first battery and the second battery;

[0200] The processing unit 904 is used to determine a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and the power ratio;

[0201] The processing unit 904 is further configured to determine the first target power and the second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power;

[0202] The control unit 906 is used to set the output power of the first battery and the second battery to the first target power and the second target power respectively.

[0203] In this embodiment, the acquisition unit 902 acquires the whole vehicle power consumption of the electric vehicle, wherein the electric vehicle refers to a vehicle that uses an on-board power supply as power, drives the wheels with an electric motor, and complies with various requirements of road traffic and safety regulations. The whole vehicle power consumption is the total power to ensure the normal operation of the electric vehicle.

[0204] Exemplarily, the electric vehicle may be a special electric vehicle, which may include a plurality of batteries as a power source.

[0205] The electric vehicle comprises a first battery and a second battery, and the first battery and the second battery are power sources of the electric vehicle.

[0206] Exemplarily, the first battery may be a front power battery of an electric vehicle.

[0207] Exemplarily, the second battery may be a rear power battery of an electric vehicle.

[0208] The acquisition unit 902 acquires a power ratio between the first battery and the second battery, wherein the power ratio represents a proportion of the power of the first battery to that of the second battery.

[0209] The processing unit 904 performs data processing on the vehicle power consumption and power ratio, and obtains a first preset power corresponding to the first battery and a second preset power corresponding to the second battery, respectively, wherein the first preset power is a preset discharge power corresponding to the first battery, and the second preset power is a preset discharge power corresponding to the second battery.

[0210] Exemplarily, the first preset power is the steady-state discharge power corresponding to the first battery.

[0211] Exemplarily, the second preset power is the steady-state discharge power corresponding to the second battery.

[0212] The processing unit 904 processes the vehicle power consumption, power ratio, first preset power and second preset power to obtain a first target power corresponding to the first battery and a second target power corresponding to the second battery, wherein the first target power is the target power corresponding to the first battery and the second target power is the target power corresponding to the second battery.

[0213] Exemplarily, the first target power may be a target output power corresponding to the first battery.

[0214] Exemplarily, the second target power may be a target output power corresponding to the second battery.

[0215] The control unit 906 sets the output power of the first battery as the first target power, and sets the output power of the second battery as the second target power.

[0216] Exemplarily, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power to meet the entire vehicle power consumption of the electric vehicle.

[0217] It should be noted that, based on data such as the vehicle's power consumption, power ratio, first preset power and second preset power, the first target power corresponding to the first battery and the second target power corresponding to the second battery are respectively determined, thereby ensuring the data accuracy of the first target power and the second target power. At the same time, the output power of the first battery is set to the first target power, and the output power of the second battery is set to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery.

[0218] The control device 900 of the electric vehicle in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery according to data such as the power consumption of the entire vehicle, the power ratio, the first preset power and the second preset power, respectively, thereby ensuring the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the service life of the first battery and the second battery.

[0219] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0220] The processing unit 904 is further used to obtain a preset time point;

[0221] The processing unit 904 is further configured to respectively obtain a first historical power of the first battery at a preset time point and a second historical power of the second battery at a preset time point;

[0222] The processing unit 904 is further configured to determine a first power difference corresponding to the first battery and a second power difference corresponding to the second battery according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power;

[0223] The processing unit 904 is further configured to determine a first target power and a second target power according to the first power difference, the second power difference, the first historical power, the second historical power and the vehicle power consumption.

[0224] The control device 900 of the electric vehicle in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery according to data such as the first power difference, the second power difference, the first historical power, the second historical power and the power consumption of the whole vehicle, thereby ensuring the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the service life of the first battery and the second battery.

[0225] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0226] The processing unit 904 is further configured to calculate a difference between the first preset power and the first historical power to obtain a third power difference, and calculate a difference between the second preset power and the second historical power to obtain a fourth power difference;

[0227] The processing unit 904 is further configured to determine a fifth power difference corresponding to the first battery according to the third power difference and the power ratio;

[0228] The processing unit 904 is further configured to determine a sixth power difference corresponding to the second battery according to the third power difference, the fourth power difference and the power ratio;

[0229] The processing unit 904 is further configured to obtain a first maximum discharge power of the first battery and a second maximum discharge power of the second battery;

[0230] The processing unit 904 is further configured to determine a seventh power difference corresponding to the second battery according to the first maximum discharge power, the second maximum discharge power and the power ratio;

[0231] The processing unit 904 is further configured to determine an eighth power difference corresponding to the first battery according to the seventh power difference and the power ratio;

[0232] The processing unit 904 is further configured to determine a first power difference value according to the fifth power difference value and the eighth power difference value;

[0233] The processing unit 904 is further configured to determine a second power difference value according to the sixth power difference value and the seventh power difference value.

[0234] The control device 900 of the electric vehicle in this embodiment ensures the data accuracy of the first target power and the second target power, and then sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output powers of the first battery and the second battery, avoiding power mutations in the first battery and the second battery, and delaying the working life of the first battery and the second battery.

[0235] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0236] The processing unit 904 is further configured to determine a first target power according to the first power difference and the first historical power;

[0237] The processing unit 904 is further configured to determine a second target power according to the second power difference and the second historical power.

[0238] The control device 900 of the electric vehicle in this embodiment sets the output power of the first battery to the first target power and the output power of the second battery to the second target power, thereby ensuring the accuracy of the output power of the first battery and the second battery and avoiding power fluctuations of the first battery and the second battery.

[0239] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0240] The processing unit 904 is further configured to determine a third target power according to the first target power, the second target power and the vehicle power consumption;

[0241] The processing unit 904 is further configured to set the output power of the supercapacitor to a third target power.

[0242] The control device 900 of the electric vehicle in this embodiment obtains the third target power of the supercapacitor by processing the first target power, the second target power and the whole vehicle power consumption, and sets the output power of the supercapacitor to the third target power to supplement the output power of the first battery and the second battery to meet the whole vehicle power consumption of the electric vehicle, thereby improving the operating stability of the electric vehicle.

[0243] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0244] The processing unit 904 is further used to obtain the motor torque, motor speed and number of motors of at least one driving motor;

[0245] The processing unit 904 is also used to determine the electric power consumption of the entire vehicle according to the motor torque, motor speed and number of motors.

[0246] The control device 900 of the electric vehicle in this embodiment obtains the whole vehicle power consumption of the electric vehicle by performing data processing on the motor torque, motor speed and number of motors, thereby ensuring the data accuracy of the whole vehicle power consumption.

[0247] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0248] The processing unit 904 is further used to detect the real-time power level of the first battery to obtain the first power level;

[0249] The processing unit 904 is further used to detect the real-time power level of the second battery to obtain the second power level;

[0250] The processing unit 904 is further configured to calculate a ratio of the first power level to the second power level to obtain a power level ratio.

[0251] The control device 900 of the electric vehicle in this embodiment obtains the power ratio by calculating the ratio of the first power and the second power, thereby ensuring the data accuracy of the power ratio.

[0252] In some embodiments, a control device 900 of an electric vehicle is provided, and the control device 900 of the electric vehicle further includes:

[0253] The processing unit 904 is further configured to determine a first coefficient and a second coefficient according to the power ratio;

[0254] The processing unit 904 is further configured to determine a first preset power according to the first coefficient and the electric power consumption of the entire vehicle;

[0255] The processing unit 904 is further used to determine the second preset power according to the second coefficient and the electric power consumption of the whole vehicle.

[0256] The control device 900 of the electric vehicle in this embodiment determines the first preset power according to the first coefficient and the power consumption of the whole vehicle, and then determines the second preset power according to the second coefficient and the power consumption of the whole vehicle, thereby ensuring the data accuracy of the first preset power and the second preset power.

[0257] In some embodiments, Figure 3 The structural block diagram of the control device of the electric vehicle provided in the embodiment of the present application is as follows: Figure 3 As shown, a control device 1000 for an electric vehicle is proposed, and the control device 1000 for an electric vehicle includes a processor 1002 and a memory 1004. The memory 1004 stores a computer program, and when the computer program is executed by the processor 1002, the steps of the control method for an electric vehicle in any of the above embodiments are implemented. Therefore, the control device 1000 for an electric vehicle has all the beneficial effects of the control method for an electric vehicle in any of the above embodiments, which will not be described in detail here.

[0258] In some embodiments, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the electric vehicle control method in any of the above embodiments are implemented, thereby having all the beneficial technical effects of the electric vehicle control method in any of the above embodiments.

[0259] In one embodiment of the present application, an electric vehicle is proposed, comprising: a control device of the electric vehicle as in any of the above embodiments, and / or a readable storage medium as in any of the above embodiments, and thus having all the beneficial technical effects of the control device of the electric vehicle as in any of the above embodiments, and / or the readable storage medium as in any of the above embodiments, which will not be elaborated herein.

[0260] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0261] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0262] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0263] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0264] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0265] An embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes a process of a control method for an electric vehicle.

[0266] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0267] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0268] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0269] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0270] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0271] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0272] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0273] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0274] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A control method for an electric vehicle, characterized in that: The electric vehicle comprises a first battery and a second battery, and the method comprises: Obtaining the whole vehicle power consumption of the electric vehicle, and obtaining the power ratio between the first battery and the second battery; Determining a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and the power ratio; Determining a first target power and a second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power; The output powers of the first battery and the second battery are set as the first target power and the second target power, respectively.

2. The method according to claim 1, characterized in that The determining the first target power and the second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power includes: Get the preset time point; Respectively acquiring a first historical power of the first battery at the preset time point and a second historical power of the second battery at the preset time point; Determine a first power difference corresponding to the first battery and a second power difference corresponding to the second battery according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power; The first target power and the second target power are determined according to the first power difference, the second power difference, the first historical power, the second historical power and the whole vehicle electric power.

3. The method according to claim 2, characterized in that The determining, according to the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power, a first power difference corresponding to the first battery and a second power difference corresponding to the second battery includes: Calculate the difference between the first preset power and the first historical power to obtain a third power difference, and calculate the difference between the second preset power and the second historical power to obtain a fourth power difference; determining a fifth power difference corresponding to the first battery according to the third power difference and the power ratio; determining a sixth power difference corresponding to the second battery according to the third power difference, the fourth power difference and the power ratio; Acquire a first maximum discharge power of the first battery and a second maximum discharge power of the second battery; determining a seventh power difference corresponding to the second battery according to the first maximum discharge power, the second maximum discharge power and the power ratio; determining an eighth power difference corresponding to the first battery according to the seventh power difference and the power ratio; Determining the first power difference value according to the fifth power difference value and the eighth power difference value; The second power difference is determined according to the sixth power difference and the seventh power difference.

4. The method according to claim 2, characterized in that: The determining the first target power and the second target power according to the first power difference, the second power difference, the first historical power, the second historical power and the vehicle power consumption includes: Determining the first target power according to the first power difference and the first historical power; The second target power is determined according to the second power difference and the second historical power.

5. The method according to claim 4, characterized in that The electric vehicle further includes a supercapacitor, and the supercapacitor is used to supplement the output power of the first battery and the second battery. After determining the second target power according to the second power difference and the second historical power, the method further includes: Determining a third target power according to the first target power, the second target power and the vehicle power consumption; The output power of the supercapacitor is set to the third target power.

6. The method according to any one of claims 1 to 5, characterized in that The electric vehicle further includes at least one driving motor, and the step of obtaining the whole vehicle power consumption of the electric vehicle includes: Obtaining a motor torque, a motor speed, and a motor quantity of at least one of the drive motors; The electric power consumption of the entire vehicle is determined according to the motor torque, the motor speed and the number of motors.

7. The method according to any one of claims 1 to 5, characterized in that The obtaining the power ratio between the first battery and the second battery includes: Detecting the real-time power level of the first battery to obtain a first power level; Detecting the real-time power level of the second battery to obtain a second power level; The ratio of the first power amount to the second power amount is calculated to obtain the power amount ratio.

8. The method according to any one of claims 1 to 5, characterized in that The determining, according to the vehicle power consumption and the power ratio, a first preset power corresponding to the first battery and a second preset power corresponding to the second battery, comprises: Determining a first coefficient and a second coefficient according to the power ratio; Determining the first preset power according to the first coefficient and the whole vehicle power consumption; The second preset power is determined according to the second coefficient and the whole vehicle electrical power.

9. A control device for an electric vehicle, characterized in that: The electric vehicle comprises a first battery and a second battery, and the device comprises: An acquisition unit, used for acquiring the whole vehicle power consumption of the electric vehicle and acquiring the power ratio between the first battery and the second battery; a processing unit, configured to determine a first preset power corresponding to the first battery and a second preset power corresponding to the second battery according to the vehicle power consumption and the power ratio; The processing unit is further configured to determine a first target power and a second target power according to the vehicle power consumption, the power ratio, the first preset power and the second preset power; A control unit is used to set the output power of the first battery and the second battery to the first target power and the second target power respectively.

10. A control device for an electric vehicle, characterized in that: include: processor; A memory, wherein a program or instruction is stored in the memory, and when the processor executes the program or instruction in the memory, the steps of the control method of the electric vehicle as claimed in any one of claims 1 to 8 are implemented.

11. A readable storage medium, characterized in that: The readable storage medium stores a program or an instruction, and when the program or the instruction is executed by the processor, the steps of the control method of the electric vehicle as described in any one of claims 1 to 8 are implemented.

12. An electric vehicle, characterized in that: include: The control device of the electric vehicle as claimed in claim 9 or 10; and / or The readable storage medium as claimed in claim 11.

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