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

Abstract

The application 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: acquiring the whole-vehicle power consumption of the electric vehicle, and acquiring the power ratio between a first battery and a second battery; determining the first preset power corresponding to the first battery and the second preset power corresponding to the second battery according to the whole-vehicle power consumption and the power ratio; determining the first target power and the second target power according to the whole-vehicle power consumption, the power ratio, the first preset power and the second preset power; and setting the output power of the first battery and the second battery as the first target power and the second target power respectively. The accuracy of the output power of the first battery and the second battery is ensured, the power mutation of the first battery and the second battery is avoided, and the working life of the first battery and the second battery is delayed.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, and in particular to a control method, device, readable storage medium, and electric vehicle for electric vehicles. Background Technology

[0002] Currently, new energy vehicles typically employ a dual-battery configuration, with one battery at the front and one at the rear. During operation, the output power of these batteries needs to be controlled separately to ensure it meets the vehicle's overall power consumption. However, existing electric vehicle control methods suffer from technical issues such as inaccurate battery output power adjustment. Summary of the Invention

[0003] This application provides a control method, apparatus, readable storage medium, and electric vehicle for electric vehicles, which solves technical problems such as inaccurate adjustment of battery output power in the prior art.

[0004] A first aspect of this application provides a control method for an electric vehicle, the control method comprising:

[0005] Obtain the total power consumption of the electric vehicle and the power ratio between the first battery and the second battery;

[0006] Based on the ratio of total vehicle power consumption to battery capacity, determine the first preset power corresponding to the first battery and the second preset power corresponding to the second battery.

[0007] The first target power and the second target power are determined based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power.

[0008] The output power 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 total power consumption of the electric vehicle is obtained. The electric vehicle refers to a vehicle that is powered by an on-board power source, drives the wheels with an electric motor, and meets all requirements of road traffic and safety regulations. The total power consumption is the total power required to ensure the normal operation of the electric vehicle.

[0010] For example, an electric vehicle can be a special electric vehicle, which may include multiple batteries as a power source.

[0011] An electric vehicle consists of a first battery and a second battery, which serve as the power source for the electric vehicle.

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

[0013] For example, the second battery can be the rear power battery of an electric vehicle.

[0014] Obtain the power ratio between the first battery and the second battery, where the power ratio represents the proportion of power of the first battery and the second battery.

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

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

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

[0018] Data processing is performed on the vehicle's total power consumption, power ratio, first preset power, and second preset power to obtain the first target power corresponding to the first battery and the 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] For example, the first target power can be the target output power corresponding to the first battery.

[0020] For example, the second target power can be the target output power corresponding to the second battery.

[0021] 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.

[0022] For example, the output power of the first battery is set to a first target power, and the output power of the second battery is set to a second target power to meet the total power consumption of the electric vehicle.

[0023] It should be noted that, based on data such as the vehicle's total 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 determined respectively, ensuring the accuracy of the first target power and the second target power data. At the same time, 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, ensuring the accuracy of the output power of the first battery and the second battery.

[0024] The electric vehicle control method in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery based on data such as the vehicle's total power consumption, power ratio, first preset power, and second preset power. This ensures the accuracy of the first and second target power data. Then, 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. This ensures the accuracy of the output power of the first and second batteries and avoids sudden power changes in the first and second batteries, thus preventing delays in their service life.

[0025] In some embodiments, determining the first target power and the second target power based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power includes:

[0026] Get the preset time point;

[0027] The first historical power of the first battery at a preset time point and the second historical power of the second battery at a preset time point are obtained respectively.

[0028] Based on the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power, determine the first power difference corresponding to the first battery and the second power difference corresponding to the second battery.

[0029] The first target power and the second target power are determined based on the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption.

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

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

[0032] Based on the third power difference and the energy ratio, determine the fifth power difference corresponding to the first battery;

[0033] Based on the third power difference, the fourth power difference, and the energy ratio, determine the sixth power difference corresponding to the second battery;

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

[0035] The seventh power difference corresponding to the second battery is determined based on the first maximum discharge power, the second maximum discharge power, and the charge ratio.

[0036] Based on the seventh power difference and the energy ratio, determine the eighth power difference corresponding to the first battery;

[0037] The first power difference is determined based on the fifth power difference and the eighth power difference;

[0038] The second power difference is determined based on the sixth and seventh power differences.

[0039] In some embodiments, determining a first target power and a second target power based on a first power difference, a second power difference, a first historical power, a second historical power, and the vehicle's total electrical power consumption includes:

[0040] The first target power is determined based on the first power difference and the first historical power.

[0041] The second target power is determined based on the second power difference and the second historical power.

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

[0043] The third target power is determined based on the first target power, the second target power, and the total vehicle power consumption;

[0044] Set the output power of the supercapacitor to the third target power.

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

[0046] Obtain the motor torque, motor speed, and number of motors for at least one drive motor;

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

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

[0049] Detect the real-time charge level of the first battery to obtain the initial charge level;

[0050] The real-time charge level of the second battery is detected to obtain the second charge level;

[0051] Calculate the ratio of the first and second energy levels to obtain the energy 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 based on the ratio of total vehicle power consumption to battery capacity includes:

[0053] Based on the electricity ratio, determine the first and second coefficients;

[0054] The first preset power is determined based on the first coefficient and the total power consumption of the vehicle;

[0055] The second preset power is determined based on the second coefficient and the total power consumption of the vehicle.

[0056] A second aspect of this application provides a control device for an electric vehicle, the control device comprising:

[0057] The acquisition unit is used to acquire the total power consumption of the electric vehicle and to acquire the power ratio between the first battery and the second battery.

[0058] The processing unit is used to determine the first preset power corresponding to the first battery and the second preset power corresponding to the second battery based on the ratio of the total vehicle power consumption to the battery capacity.

[0059] The processing unit is also used to determine the first target power and the second target power based on the vehicle's total 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] A third aspect of this application provides another control device for an electric vehicle, including a processor and a memory. The memory stores a computer program, which, when executed by the processor, implements the steps of the electric vehicle control method as described in any of the above embodiments. Therefore, this electric vehicle control device possesses all the beneficial effects of the electric vehicle control method in any of the above embodiments, which will not be elaborated further here.

[0062] A fourth aspect of this application provides a readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the electric vehicle control method as described in any of the above embodiments. Therefore, this readable storage medium possesses all the beneficial effects of the electric vehicle control method in any of the above embodiments, which will not be elaborated further here.

[0063] According to a fifth aspect of the present invention, an electric vehicle is provided, comprising: a control device for an electric vehicle as defined in the second aspect above, or a control device for an electric vehicle as defined in the third aspect above, and / or a readable storage medium as defined in the fourth aspect above, thus having all the beneficial technical effects of the control device for an electric vehicle as defined in the second aspect above, or the control device for an 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 further here. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 A flowchart of a control method for an electric vehicle provided in an embodiment of this application;

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

[0067] Figure 3 This is a structural block diagram of the control device for an electric vehicle provided in an embodiment of this application. Detailed Implementation

[0068] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to 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 document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.

[0070] In some embodiments, Figure 1 A flowchart of the electric vehicle control method provided in the embodiments of this application is shown below. Figure 1 As shown, a control method for electric vehicles is proposed, which includes:

[0071] Step S101: Obtain the total power consumption of the electric vehicle and the power ratio between the first battery and the second battery.

[0072] In this embodiment, the total power consumption of the electric vehicle is obtained. The electric vehicle refers to a vehicle that is powered by an on-board power source, drives the wheels with an electric motor, and meets all requirements of road traffic and safety regulations. The total power consumption is the total power required to ensure the normal operation of the electric vehicle.

[0073] For example, an electric vehicle can be a special electric vehicle, which may include multiple batteries as a power source.

[0074] An electric vehicle consists of a first battery and a second battery, which serve as the power source for the electric vehicle.

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

[0076] For example, the second battery can be the rear power battery of an electric vehicle.

[0077] Obtain the power ratio between the first battery and the second battery, where the power ratio represents the proportion of power of the first battery and the second battery.

[0078] Step S102: Determine the first preset power corresponding to the first battery and the second preset power corresponding to the second battery based on the ratio of the total vehicle power consumption to the battery capacity.

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

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

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

[0082] Step S103: Determine the first target power and the second target power based on the vehicle's total power consumption, power ratio, first preset power, and second preset power.

[0083] Data processing is performed on the vehicle's total power consumption, power ratio, first preset power, and second preset power to obtain the first target power corresponding to the first battery and the 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] For example, the first target power can be the target output power corresponding to the first battery.

[0085] For example, the second target power can be the target output power corresponding to the second battery.

[0086] Step S104: Set the output power 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 to the first target power, and the output power of the second battery is set to the second target power.

[0088] For example, the output power of the first battery is set to a first target power, and the output power of the second battery is set to a second target power to meet the total power consumption of the electric vehicle.

[0089] It should be noted that, based on data such as the vehicle's total 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 determined respectively, ensuring the accuracy of the first target power and the second target power data. At the same time, 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, ensuring the accuracy of the output power of the first battery and the second battery.

[0090] The electric vehicle control method in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery based on data such as the vehicle's total power consumption, power ratio, first preset power, and second preset power. This ensures the accuracy of the first and second target power data. Then, 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. This ensures the accuracy of the output power of the first and second batteries and avoids sudden power changes in the first and second batteries, thus preventing delays in their service life.

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

[0092] Step S201: Obtain the preset time point.

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

[0094] For example, the preset time point can be a historical time point when the first battery output power was set.

[0095] For example, the preset time point can be a historical time point when the output power of the second battery was set.

[0096] For example, the preset time point can be a historical time point when the output power of the first battery and the second battery are set simultaneously.

[0097] Step S202: Obtain the first historical power of the first battery at a preset time point and the second historical power of the second battery at a preset time point.

[0098] The system obtains the first historical power of the first battery at a preset time point and the second historical power of the second battery at a preset time point, wherein the first historical power is the output power of the first battery set at the preset time point and the second historical power is the output power of the second battery set at the preset time point.

[0099] For example, the preset time point can be the previous set time of the first battery and the second battery, the first historical power is the output power of the first battery at the previous set time, and the second historical power is the output power of the second battery at the previous set time.

[0100] Step S203: Based on the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power, determine the first power difference corresponding to the first battery and the second power difference corresponding to the second battery.

[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 the first power difference value corresponding to the first battery and the second power difference value corresponding to the second battery. The first power difference value represents the power change range of the first battery, and the second power difference value represents the power change range of the second battery.

[0102] For example, the first power difference may be a power difference representing the discharge power of the first battery.

[0103] For example, the second power difference may be a difference in the discharge power of the second battery.

[0104] Step S204: Determine the first target power and the second target power based on the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption.

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

[0106] The electric vehicle control method in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery based on data such as the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption. This ensures the accuracy of the first and second target power data. Then, 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. This ensures the accuracy of the output power of the first and second batteries, avoids sudden power changes in the first and second batteries, and prevents delays in the working life of the first and second batteries.

[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 based on a battery ratio, a first preset power, a second preset power, a first historical power, and a second historical power, including:

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

[0109] In this embodiment, the 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 the difference between the first preset power and the first historical power.

[0110] The difference between the second preset power and the second historical power is determined to obtain the fourth power difference, where the fourth power difference represents the difference between the second preset power and the second historical power.

[0111] For example, the third power difference can be specifically the real-time difference in discharge power of the front power battery.

[0112] For example, the fourth power difference can be specifically the real-time difference in discharge power of the rear power battery.

[0113] For example, the formulas for calculating the third power difference and the fourth power difference are as follows:

[0114]

[0115] Wherein, ΔP f The third power difference, ΔP r The fourth power difference, P1 f P1 is the first preset power. r Let P(k-1) be the second preset power. f The first historical power, P(k-1) r The second historical power is represented by k, which indicates the preset time point.

[0116] Step S302: Determine the fifth power difference corresponding to the first battery based on the third power difference and the power ratio.

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

[0118] For example, the fifth power difference can be the first discharge power difference of the front power battery.

[0119] Step S303: Determine the sixth power difference corresponding to the second battery based on the third power difference, the fourth power difference, and the energy ratio.

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

[0121] For example, the sixth power difference can be the first discharge power difference of the subsequent power battery.

[0122] For example, the formulas for calculating the fifth power difference and the sixth power difference are as follows:

[0123]

[0124] Wherein, ΔP1 f The fifth power difference, ΔP1 r The sixth power difference, β is the energy ratio, and ΔP f The third power difference, ΔP r This is the fourth power difference.

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

[0126] Obtain the first maximum discharge power of the first battery and the second maximum discharge power of the second battery, 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] For example, the first maximum discharge power can be the discharge power limit value of the front power battery.

[0128] For example, the second maximum discharge power can be the discharge power limit value of the rear power battery.

[0129] Step S305: Determine the seventh power difference corresponding to the second battery based on the first maximum discharge power, the second maximum discharge power, and the charge ratio.

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

[0131] For example, the seventh power difference can represent the second discharge power difference of the subsequent power battery.

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

[0133] Data processing was performed on the seventh power difference and the energy ratio to obtain the eighth power difference corresponding to the first battery.

[0134] For example, the eighth power difference can represent the second discharge power difference of the front power battery.

[0135] For example, the formulas for calculating the seventh power difference and the eighth power difference are as follows:

[0136]

[0137] Wherein, ΔP2 f The eighth power difference, ΔP2 r The seventh power difference, β is the energy ratio, and ΔP fmax The first maximum discharge power, ΔP rmax This is the second maximum discharge power.

[0138] Step S307: Determine the first power difference based on the fifth power difference and the eighth power difference.

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

[0140] Step S308: Determine the second power difference based on the sixth power difference and the seventh power difference.

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

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

[0143] For example, the formulas for calculating the first power difference and the second power difference are as follows:

[0144]

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

[0146] The electric vehicle control method in this embodiment ensures the accuracy of the first target power and the second target power data. Then, 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. This ensures the accuracy of the output power of the first battery and the second battery, avoids sudden power changes in the first battery and the second battery, and prevents delays in 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 based on a first power difference, a second power difference, a first historical power, a second historical power, and the vehicle's total electrical power consumption, including:

[0148] Step S401: Determine the first target power based on the first power difference and the first historical power.

[0149] In this embodiment, the first power difference and the first historical power are processed to obtain the first target power of the first battery.

[0150] Step S402: Determine the second target power based on the second power difference and the second historical power.

[0151] The second target power of the second battery is obtained by processing the second power difference and the second historical power.

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

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

[0154] Step S501: Determine the third target power based on the first target power, the second target power, and the total vehicle power consumption.

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

[0156] For example, the supercapacitor is connected in parallel with the first battery and the second battery.

[0157] Data processing is performed on the first target power, the second target power, and the vehicle's electrical power to obtain the third target power of the supercapacitor, where the third target power is the target output power of the supercapacitor.

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

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

[0160] For example, the formulas for calculating the first target power, the second target power, and the third target power are as follows:

[0161]

[0162] Where k represents the current time, P(k) f Let P(k) be the first target power. r Let P(k) be the second target power. c For the third target power, P(k-1) f P(k-1)r is the first historical power, P(k-1)r is the second historical power, and ΔP3 is the third historical power. f The first power difference, ΔP3 r The second power difference, s(ΔP) f ) and s(ΔP r ) represents the positive or negative sign, P 总 This refers to the total electrical power consumption of the vehicle.

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

[0164] The electric vehicle control method in this embodiment obtains a third target power for the supercapacitor by processing the data of the first target power, the second target power, and the total vehicle power consumption. The output power of the supercapacitor is set as the third target power to supplement the output power of the first battery and the second battery, thereby meeting the total vehicle power consumption of the electric vehicle and improving the operational stability of the electric vehicle.

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

[0166] Step S601: Obtain the motor torque, motor speed, and number of motors of at least one drive motor.

[0167] In this embodiment, the electric vehicle further includes at least one drive motor, which is used to drive the electric vehicle to run. The motor torque, motor speed, and number of motors of the 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] For example, an electric vehicle may include two drive motors.

[0169] Step S602: Determine the total power consumption of the vehicle based on the motor torque, motor speed, and number of motors.

[0170] Data processing is performed on motor torque, motor speed, and number of motors to obtain the total power consumption of the electric vehicle.

[0171] For example, the formula for calculating the total electrical power consumption of a vehicle is as follows:

[0172]

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

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

[0175] In some embodiments, a control method for an electric vehicle is proposed, which obtains the charge ratio between a first battery and a second battery, including:

[0176] Step S701: Detect the real-time power level of the first battery and obtain the first power level;

[0177] Step S702: Detect the real-time power level of the second battery and obtain the second power level;

[0178] Step S703: Calculate the ratio of the first power consumption to the second power consumption to obtain the power consumption ratio.

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

[0180] For example, the first battery level can be specifically 89%.

[0181] For example, the second battery level could be specifically 87%.

[0182] Calculate the ratio of the first and second energy levels to obtain the energy ratio.

[0183] For example, the energy ratio can represent the instantaneous ratio of the discharge power of the front and rear power batteries.

[0184] For example, the formula for calculating the power ratio is:

[0185]

[0186] Where β is the energy ratio, and Soc f For the first charge, SoC r This is the second charge.

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

[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 based on the ratio of total vehicle power consumption to battery capacity, including:

[0189] Step S801: Determine the first coefficient and the second coefficient based on the power ratio;

[0190] Step S802: Determine the first preset power based on the first coefficient and the total power consumption of the vehicle;

[0191] Step S803: Determine the second preset power based on the second coefficient and the total vehicle power consumption.

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

[0193] The first preset power is determined based on the first coefficient and the total power consumption of the vehicle, and the second preset power is determined based on the second coefficient and the total power consumption of the vehicle.

[0194] For example, the formulas for calculating the first preset power and the second preset power are as follows:

[0195]

[0196] Where β is the energy ratio, P 总 P1 represents the total electrical power consumption of the vehicle. f P1 is the first preset power. r This is the second preset power.

[0197] The electric vehicle control method in this embodiment determines a first preset power based on a first coefficient and the total vehicle power consumption, and then determines a second preset power based on a second coefficient and the total vehicle power consumption, thus ensuring the accuracy of the data for the first and second preset powers.

[0198] In some embodiments, Figure 2 A functional block diagram of the control device for an electric vehicle provided in the embodiments of this application, such as... Figure 2 As shown, an embodiment of this application provides a control device 900 for an electric vehicle, the control device 900 for an electric vehicle including:

[0199] The acquisition unit 902 is used to acquire the total power consumption of the electric vehicle and to acquire the power ratio between the first battery and the second battery.

[0200] The processing unit 904 is used to determine the first preset power corresponding to the first battery and the second preset power corresponding to the second battery based on the ratio of the total vehicle power consumption to the battery capacity.

[0201] The processing unit 904 is also used to determine the first target power and the second target power based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power;

[0202] 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 total power consumption of the electric vehicle. The electric vehicle refers to a vehicle that is powered by an on-board power source and drives the wheels with an electric motor, and meets all requirements of road traffic and safety regulations. The total power consumption is the total power required to ensure the normal operation of the electric vehicle.

[0204] For example, an electric vehicle can be a special electric vehicle, which may include multiple batteries as a power source.

[0205] An electric vehicle consists of a first battery and a second battery, which serve as the power source for the electric vehicle.

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

[0207] For example, the second battery can be the rear power battery of an electric vehicle.

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

[0209] The processing unit 904 performs data processing on the ratio of the vehicle's electrical power consumption and the amount of electricity, and obtains the first preset power corresponding to the first battery and the second preset power corresponding to the second battery, wherein the first preset power is the preset discharge power corresponding to the first battery and the second preset power is the preset discharge power corresponding to the second battery.

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

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

[0212] The processing unit 904 processes the vehicle's power consumption, power ratio, first preset power, and second preset power to obtain the first target power corresponding to the first battery and the 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] For example, the first target power can be the target output power corresponding to the first battery.

[0214] For example, the second target power can be the target output power corresponding to the second battery.

[0215] The control unit 906 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.

[0216] For example, the output power of the first battery is set to a first target power, and the output power of the second battery is set to a second target power to meet the total power consumption of the electric vehicle.

[0217] It should be noted that, based on data such as the vehicle's total 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 determined respectively, ensuring the accuracy of the first target power and the second target power data. At the same time, 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, ensuring the accuracy of the output power of the first battery and the second battery.

[0218] The electric vehicle control device 900 in this embodiment determines the first target power corresponding to the first battery and the second target power corresponding to the second battery based on data such as the total vehicle power consumption, power ratio, first preset power and second preset power, ensuring the accuracy of the first target power and second target power data. Then, 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, ensuring the accuracy of the output power of the first battery and the second battery, avoiding sudden power changes in the first battery and the second battery, and delaying the working life of the first battery and the second battery.

[0219] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

[0220] Processing unit 904 is also used to obtain a preset time point;

[0221] The processing unit 904 is also configured to acquire the first historical power of the first battery at a preset time point and the second historical power of the second battery at a preset time point, respectively.

[0222] Processing unit 904 is also used to determine a first power difference corresponding to the first battery and a second power difference corresponding to the second battery based on the power ratio, a first preset power, a second preset power, a first historical power and a second historical power.

[0223] The processing unit 904 is also configured to determine the first target power and the second target power based on the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption.

[0224] In this embodiment, the electric vehicle control device 900 determines the first target power corresponding to the first battery and the second target power corresponding to the second battery based on data such as the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption. This ensures the accuracy of the first and second target power data. Then, 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. This ensures the accuracy of the output power of the first and second batteries, avoids sudden power changes in the first and second batteries, and prevents delays in the working life of the first and second batteries.

[0225] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

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

[0227] The processing unit 904 is also used to determine the fifth power difference corresponding to the first battery based on the third power difference and the power ratio;

[0228] The processing unit 904 is also used to determine the sixth power difference corresponding to the second battery based on the third power difference, the fourth power difference, and the charge ratio.

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

[0230] The processing unit 904 is also configured to determine the seventh power difference value corresponding to the second battery based on the first maximum discharge power, the second maximum discharge power and the charge ratio;

[0231] The processing unit 904 is also used to determine the eighth power difference corresponding to the first battery based on the seventh power difference and the power ratio;

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

[0233] The processing unit 904 is also configured to determine the second power difference based on the sixth power difference and the seventh power difference.

[0234] The electric vehicle control device 900 in this embodiment ensures the accuracy of the first target power and the second target power data. Then, it 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, thus ensuring the accuracy of the output power of the first battery and the second battery and avoiding sudden power changes in the first battery and the second battery, which would delay the working life of the first battery and the second battery.

[0235] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

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

[0237] The processing unit 904 is also configured to determine the second target power based on the second power difference and the second historical power.

[0238] In this embodiment, the electric vehicle control device 900 sets the output power of the first battery to a first target power and the output power of the second battery to a second target power, ensuring the accuracy of the output power of the first and second batteries and avoiding power fluctuations between the first and second batteries.

[0239] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

[0240] The processing unit 904 is also configured to determine a third target power based on the first target power, the second target power, and the total vehicle power consumption;

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

[0242] In this embodiment, the electric vehicle control device 900 processes data of the first target power, the second target power, and the total vehicle power consumption to obtain the third target power of the supercapacitor. The output power of the supercapacitor is set as the third target power to supplement the output power of the first battery and the second battery, thereby meeting the total vehicle power consumption of the electric vehicle and improving the operational stability of the electric vehicle.

[0243] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

[0244] The processing unit 904 is also used to acquire the motor torque, motor speed and number of motors of at least one drive motor;

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

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

[0247] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

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

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

[0250] The processing unit 904 is also used to calculate the ratio of the first power level and the second power level to obtain the power ratio.

[0251] In this embodiment, the electric vehicle control device 900 calculates the ratio of the first battery charge to the second battery charge to obtain the battery charge ratio, thus ensuring the accuracy of the battery charge ratio data.

[0252] In some embodiments, a control device 900 for an electric vehicle is provided, the control device 900 for the electric vehicle further comprising:

[0253] The processing unit 904 is also used to determine the first coefficient and the second coefficient based on the power ratio;

[0254] The processing unit 904 is also used to determine the first preset power based on the first coefficient and the total power consumption of the vehicle;

[0255] The processing unit 904 is also used to determine the second preset power based on the second coefficient and the total power consumption of the vehicle.

[0256] In this embodiment, the electric vehicle control device 900 determines a first preset power based on a first coefficient and the total vehicle power consumption, and then determines a second preset power based on a second coefficient and the total vehicle power consumption, thus ensuring the accuracy of the data for the first and second preset powers.

[0257] In some embodiments, Figure 3 A structural block diagram of the control device for an electric vehicle provided in the embodiments of this application is shown below. Figure 3 As shown, a control device 1000 for an electric vehicle is proposed. The control device 1000 includes a processor 1002 and a memory 1004. The memory 1004 stores a computer program, which, when executed by the processor 1002, implements the steps of the electric vehicle control method as described in any of the above embodiments. Therefore, the electric vehicle control device 1000 possesses all the beneficial effects of the electric vehicle control method in any of the above embodiments, which will not be elaborated further here.

[0258] In some embodiments, a readable storage medium is provided having a program stored thereon, which, when executed by a processor, implements the steps of the electric vehicle control method as described in any of the above embodiments, and thus has all the beneficial technical effects of the electric vehicle control method described in any of the above embodiments.

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

[0260] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0261] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.

[0262] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0263] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0264] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0265] This application also provides a computer program product including computer software instructions that, when executed on a processing device, cause the processing device to execute a process of a control method for an electric vehicle.

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

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

[0268] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

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

[0270] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0271] If the integrated unit is implemented as 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 this application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0272] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0273] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.

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

Claims

1. A control method for an electric vehicle, characterized in that, The electric vehicle includes a first battery and a second battery, and the method includes: Obtain the total power consumption of the electric vehicle and the power ratio between the first battery and the second battery; Based on the vehicle's total power consumption and the power ratio, determine the first preset power corresponding to the first battery and the second preset power corresponding to the second battery; Based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power, determine the first target power and the second target power; The output power of the first battery and the second battery are respectively set to the first target power and the second target power; The step of determining the first target power and the second target power based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power includes: Get the preset time point; The first historical power of the first battery at the preset time point and the second historical power of the second battery at the preset time point are respectively obtained; Based on the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power, determine the first power difference corresponding to the first battery and the second power difference corresponding to the second battery; The first target power and the second target power are determined based on the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption. The step of determining the first power difference corresponding to the first battery and the second power difference corresponding to the second battery based on the power ratio, the first preset power, the second preset power, the first historical power, and the second historical power includes: Calculate the difference between the first preset power and the first historical power to obtain the third power difference, and calculate the difference between the second preset power and the second historical power to obtain the fourth power difference; Based on the third power difference and the power ratio, the fifth power difference corresponding to the first battery is determined; Based on the third power difference, the fourth power difference, and the power ratio, determine the sixth power difference corresponding to the second battery; Obtain the first maximum discharge power of the first battery and the second maximum discharge power of the second battery; The seventh power difference corresponding to the second battery is determined based on the first maximum discharge power, the second maximum discharge power, and the charge ratio. Based on the seventh power difference and the power ratio, determine the eighth power difference corresponding to the first battery; The first power difference is determined based on the fifth power difference and the eighth power difference; The second power difference is determined based on the sixth power difference and the seventh power difference.

2. The method according to claim 1, characterized in that, The step of determining the first target power and the second target power based on the first power difference, the second power difference, the first historical power, the second historical power, and the total vehicle power consumption includes: The first target power is determined based on the first power difference and the first historical power. The second target power is determined based on the second power difference and the second historical power.

3. The method according to claim 2, characterized in that, The electric vehicle also includes a supercapacitor used to supplement the output power of the first battery and the second battery. After determining the second target power based on the second power difference and the second historical power, the method further includes: The third target power is determined based on the first target power, the second target power, and the total vehicle power consumption; The output power of the supercapacitor is set to the third target power.

4. The method according to any one of claims 1 to 3, characterized in that, The electric vehicle further includes at least one drive motor, and the step of obtaining the total power consumption of the electric vehicle includes: Obtain the motor torque, motor speed, and number of motors of at least one of the drive motors; The total power consumption of the vehicle is determined based on the motor torque, the motor speed, and the number of motors.

5. The method according to any one of claims 1 to 3, characterized in that, The step of obtaining the capacity ratio between the first battery and the second battery includes: The real-time charge level of the first battery is detected to obtain the first charge level; The real-time charge level of the second battery is detected to obtain the second charge level; Calculate the ratio of the first power consumption to the second power consumption to obtain the power consumption ratio.

6. The method according to any one of claims 1 to 3, characterized in that, The step of determining the first preset power corresponding to the first battery and the second preset power corresponding to the second battery based on the ratio of the total vehicle power consumption to the battery capacity includes: Based on the stated power ratio, determine the first coefficient and the second coefficient; The first preset power is determined based on the first coefficient and the total power consumption of the vehicle; The second preset power is determined based on the second coefficient and the total power consumption of the vehicle.

7. A control device for an electric vehicle, characterized in that, The control device is used to implement the steps of the control method for an electric vehicle as described in any one of claims 1 to 6, the electric vehicle comprising a first battery and a second battery, the device comprising: The acquisition unit is used to acquire the total power consumption of the electric vehicle and to acquire the power ratio between the first battery and the second battery. The processing unit is configured to determine a first preset power corresponding to the first battery and a second preset power corresponding to the second battery based on the ratio of the total vehicle power consumption to the power consumption; The processing unit is further configured to determine a first target power and a second target power based on the vehicle's total power consumption, the power ratio, the first preset power, and the second preset power; The control unit is configured to set the output power of the first battery and the second battery to the first target power and the second target power, respectively.

8. A control device for an electric vehicle, characterized in that, include: processor; A memory containing programs or instructions, wherein a processor, when executing the programs or instructions in the memory, implements the steps of the electric vehicle control method as described in any one of claims 1 to 6.

9. A readable storage medium, characterized in that, A program or instructions are stored on a readable storage medium, which, when executed by a processor, implement the steps of the control method for an electric vehicle as described in any one of claims 1 to 6.

10. An electric vehicle, characterized in that, include: The control device for an electric vehicle as described in claim 7 or 8; and / or The readable storage medium as described in claim 9.

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