Method, device and vehicle for determining target SOC under series power generation conditions

Abstract

The present application provides a method, device and vehicle for determining the target SOC under a series power generation condition. The method includes: obtaining the current SOC of the power battery of the vehicle, and according to the current SOC of the power battery, looking up a table to determine the basic value of the target SOC of the power battery; obtaining the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle; according to the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle, by looking up a table, determining the correction value of the target SOC of the power battery; according to the correction value of the target SOC of the power battery, correcting the basic value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery. The present application can correct the target SOC, ensure that the engine operating point is within the optimal operating range, and improve the power and economy of the vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device and vehicle for determining a target SOC under a series power generation condition. Background Art

[0002] When a hybrid vehicle is in series power generation mode, the engine will charge the power battery through the generator, and the engine operating point can be adjusted by changing the power generation power so that the engine operating point is always within the optimal operating range.

[0003] At present, the power generation is usually adjusted by the target SOC (State of Charge) of the power battery, and the target SOC of the power battery is usually determined based on the relevant information of the power battery. However, the target SOC determined by this method cannot ensure that the engine operating point is within the optimal operating range, which affects the power and economy of the vehicle. Summary of the invention

[0004] The present application provides a method, device and vehicle for determining a target SOC under a series power generation condition, so as to solve the problem that the target SOC determined by the prior art cannot ensure that the engine operating point is within the optimal operating range, thus affecting the power and economy of the vehicle.

[0005] In a first aspect, the present application provides a method for determining a target SOC under a series power generation condition, comprising:

[0006] Obtaining the current SOC of the vehicle's power battery, and determining a basic value of the target SOC of the power battery by looking up the table according to the current SOC of the power battery;

[0007] Acquire at least one of current driving information of the vehicle, atmospheric pressure of the current environment of the vehicle, and slope of the current road surface of the vehicle;

[0008] Determining a correction value of a target SOC of the power battery by looking up a table according to at least one of current driving information of the vehicle, current atmospheric pressure of the vehicle's environment, and a slope of a road surface on which the vehicle is currently located;

[0009] According to the correction value of the target SOC of the power battery, the basic value of the target SOC of the power battery is corrected to obtain a final value of the target SOC of the power battery.

[0010] In a possible implementation, the correction value of the target SOC of the power battery is determined by looking up a table according to at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle, including:

[0011] If the current driving information of the vehicle is obtained, a first correction amount of the target SOC of the power battery is determined by looking up the table according to the current driving information of the vehicle;

[0012] If the atmospheric pressure of the current environment of the vehicle is obtained, a second correction amount of the target SOC of the power battery is determined by looking up the table according to the atmospheric pressure of the current environment of the vehicle;

[0013] If the slope of the road surface on which the vehicle is currently located is obtained, a third correction amount of the target SOC of the power battery is determined by looking up a table according to the slope of the road surface on which the vehicle is currently located;

[0014] The first correction amount, the second correction amount and the third correction amount are summed to obtain a correction value of the target SOC of the power battery.

[0015] In one possible implementation, the current driving information of the vehicle includes at least one of a current driving mode of the vehicle, a current speed of the vehicle, and a power currently consumed by a high-voltage accessory of the vehicle;

[0016] According to the current driving information of the vehicle, a first correction amount of the target SOC of the power battery is determined by looking up a table, including:

[0017] If the current driving mode of the vehicle is obtained, a first SOC compensation amount corresponding to the current driving mode of the vehicle is determined according to a first preset table; the first preset table stores a correspondence between the driving mode and the first SOC compensation amount;

[0018] If the current speed of the vehicle is obtained, the second SOC compensation amount corresponding to the current speed of the vehicle is determined according to a second preset table; the second preset table stores the corresponding relationship between the vehicle speed and the second SOC compensation amount;

[0019] If the power currently consumed by the high-voltage accessory of the vehicle is obtained, a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessory of the vehicle is determined according to a third preset table; the third preset table stores a correspondence between the power consumed by the high-voltage accessory and the third SOC compensation amount;

[0020] The first correction amount of the target SOC of the power battery is obtained by summing a first SOC compensation amount corresponding to the current driving mode of the vehicle, a second SOC compensation amount corresponding to the current speed of the vehicle, and a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle.

[0021] In a possible implementation, according to the atmospheric pressure of the current environment of the vehicle, the second correction amount of the target SOC of the power battery is determined by looking up a table, including:

[0022] According to a fourth preset table, a fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle is determined as a second correction amount of the target SOC of the power battery; the fourth preset table stores a correspondence between the atmospheric pressure and the fourth SOC compensation amount.

[0023] In a possible implementation, the current driving information of the vehicle includes the current speed of the vehicle;

[0024] According to the slope of the current road surface on which the vehicle is located, a third correction amount of the target SOC of the power battery is determined by looking up a table, including:

[0025] According to the fifth preset table, the fifth SOC compensation amount corresponding to the current slope of the vehicle's road surface and the current vehicle speed is determined as the third correction amount of the target SOC of the power battery; the fifth preset table stores the correspondence between the road slope, vehicle speed and the fifth SOC compensation amount.

[0026] In a possible implementation, after the basic value of the target SOC of the power battery is corrected according to the corrected value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery, the method for determining the target SOC under the series power generation condition further includes:

[0027] If the target SOC value input by the user is detected, the final value of the target SOC of the power battery is compared with the target SOC value input by the user;

[0028] If the final value of the target SOC of the power battery is less than the target SOC value input by the user, the final value of the target SOC of the power battery is updated to the target SOC value input by the user.

[0029] In a possible implementation, according to the current SOC of the power battery, a basic value of the target SOC of the power battery is determined by looking up a table, including:

[0030] Obtain the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself;

[0031] According to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself, a basic value of the target SOC of the power battery is determined by looking up a table.

[0032] In a second aspect, the present application provides a device for determining a target SOC under a series power generation condition, comprising:

[0033] A basic value determination module, used to obtain the current SOC of the power battery of the vehicle, and determine the basic value of the target SOC of the power battery by looking up the table according to the current SOC of the power battery;

[0034] An acquisition module, used to acquire at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle;

[0035] A correction value determination module, used to determine the correction value of the target SOC of the power battery by looking up a table according to at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface on which the vehicle is located;

[0036] The final value determination module is used to correct the basic value of the target SOC of the power battery according to the correction value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery.

[0037] In a possible implementation, the correction value determination module is specifically used to:

[0038] If the current driving information of the vehicle is obtained, a first correction amount of the target SOC of the power battery is determined by looking up the table according to the current driving information of the vehicle;

[0039] If the atmospheric pressure of the current environment of the vehicle is obtained, a second correction amount of the target SOC of the power battery is determined by looking up the table according to the atmospheric pressure of the current environment of the vehicle;

[0040] If the slope of the road surface on which the vehicle is currently located is obtained, a third correction amount of the target SOC of the power battery is determined by looking up a table according to the slope of the road surface on which the vehicle is currently located;

[0041] The first correction amount, the second correction amount and the third correction amount are summed to obtain a correction value of the target SOC of the power battery.

[0042] In one possible implementation, the current driving information of the vehicle includes at least one of a current driving mode of the vehicle, a current speed of the vehicle, and a power currently consumed by a high-voltage accessory of the vehicle;

[0043] The correction value determination module is specifically used for:

[0044] If the current driving mode of the vehicle is obtained, a first SOC compensation amount corresponding to the current driving mode of the vehicle is determined according to a first preset table; the first preset table stores a correspondence between the driving mode and the first SOC compensation amount;

[0045] If the current speed of the vehicle is obtained, the second SOC compensation amount corresponding to the current speed of the vehicle is determined according to a second preset table; the second preset table stores the corresponding relationship between the vehicle speed and the second SOC compensation amount;

[0046] If the power currently consumed by the high-voltage accessory of the vehicle is obtained, a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessory of the vehicle is determined according to a third preset table; the third preset table stores a correspondence between the power consumed by the high-voltage accessory and the third SOC compensation amount;

[0047] The first correction amount of the target SOC of the power battery is obtained by summing a first SOC compensation amount corresponding to the current driving mode of the vehicle, a second SOC compensation amount corresponding to the current speed of the vehicle, and a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle.

[0048] In a possible implementation, the correction value determination module is specifically used to:

[0049] According to a fourth preset table, a fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle is determined as a second correction amount of the target SOC of the power battery; the fourth preset table stores a correspondence between the atmospheric pressure and the fourth SOC compensation amount.

[0050] In a possible implementation, the current driving information of the vehicle includes the current speed of the vehicle;

[0051] The correction value determination module is specifically used for:

[0052] According to the fifth preset table, the fifth SOC compensation amount corresponding to the current slope of the vehicle's road surface and the current vehicle speed is determined as the third correction amount of the target SOC of the power battery; the fifth preset table stores the correspondence between the road slope, vehicle speed and the fifth SOC compensation amount.

[0053] In a possible implementation, the target SOC determination device under the series power generation condition further includes:

[0054] The user-defined module is used to compare the final value of the target SOC of the power battery with the target SOC value input by the user if the target SOC value input by the user is detected; if the final value of the target SOC of the power battery is less than the target SOC value input by the user, the final value of the target SOC of the power battery is updated to the target SOC value input by the user.

[0055] In a possible implementation, the basic value determination module is specifically used to:

[0056] Obtain the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself;

[0057] According to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself, a basic value of the target SOC of the power battery is determined by looking up a table.

[0058] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method for determining the target SOC under the series power generation condition as described in the first aspect or any possible implementation of the first aspect are implemented.

[0059] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising the electronic device as described in the third aspect.

[0060] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the method for determining the target SOC under the series power generation condition as described in the first aspect or any possible implementation method of the first aspect.

[0061] The embodiments of the present application provide a method, device and vehicle for determining a target SOC under a series power generation condition. The basic value of the target SOC of the power battery is determined by table lookup based on the current SOC of the power battery. The correction value of the target SOC of the power battery is determined by table lookup based on the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface on which the vehicle is located. The basic value of the target SOC of the power battery is corrected by the correction value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery. The target SOC can be corrected according to the actual driving information of the vehicle, the atmospheric pressure of the actual environment of the vehicle and the slope of the actual road surface on which the vehicle is located, to ensure that the target SOC meets the actual operation requirements of the vehicle, thereby ensuring that the engine operating point is within the optimal operating range, thereby improving the power and economy of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0063] Figure 1 is a flow chart of the target SOC determination method under the series power generation condition provided by the embodiment of the present application;

[0064] Figure 2 is a schematic structural diagram of a target SOC determination device under a series power generation condition provided by an embodiment of the present application;

[0065] Figure 3It is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0067] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0068] See also Figure 1 , which shows a flow chart of the target SOC determination method under the series power generation condition provided by the embodiment of the present application. The execution subject of the method may be an electronic device, and the electronic device may be a vehicle controller of the vehicle. The method is described in detail as follows:

[0069] In S101 , the current SOC of the power battery of the vehicle is acquired, and according to the current SOC of the power battery, a basic value of the target SOC of the power battery is determined by table lookup.

[0070] The vehicle's power battery can provide power for the vehicle. The target SOC of the power battery can be used to adjust the power generation of the vehicle under series power generation conditions, thereby adjusting the engine load point.

[0071] In this embodiment, when the vehicle is in a series power generation condition, the current SOC of the power battery can be obtained through the battery management system (BMS), and the basic value of the target SOC of the power battery can be determined by looking up the table. The basic value of the target SOC of the power battery is only a basic value of the target SOC of the power battery, and the value needs to be corrected to obtain the final value of the target SOC of the power battery.

[0072] In some embodiments, the above S101 may include:

[0073] Obtain the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself;

[0074] According to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself, a basic value of the target SOC of the power battery is determined by looking up a table.

[0075] In this embodiment, the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself may be respectively obtained through the corresponding environment temperature sensor and battery temperature sensor.

[0076] By querying the table corresponding to the basic value, the basic value of the target SOC of the power battery corresponding to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself can be obtained. Among them, the table corresponding to the basic value stores the corresponding relationship between the SOC of the power battery, the temperature of the environment in which the power battery is located, the temperature of the power battery itself, and the basic value of the target SOC. The table corresponding to the basic value can be calibrated in advance.

[0077] In S102, at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle is obtained.

[0078] The current driving information of the vehicle may indicate the actual driving state of the current vehicle, and may include at least one of the current driving mode of the vehicle, the current speed of the vehicle, and the power currently consumed by the high-voltage accessories of the vehicle. The high-voltage accessories of the vehicle refer to high-voltage components other than components that ensure the main functions of the vehicle (driving functions, etc.), for example, electric air conditioning and electric heating that ensure the comfort of the cockpit.

[0079] The atmospheric pressure of the vehicle's current environment may represent characteristics of the vehicle's actual current environment.

[0080] The slope of the current road surface on which the vehicle is located may represent the characteristics of the actual road surface on which the vehicle is currently located.

[0081] In S103, a correction value of the target SOC of the power battery is determined by table lookup according to at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment, and the slope of the current road surface on which the vehicle is located.

[0082] According to actual needs, this embodiment may only consider any one of the current driving information of the vehicle, the atmospheric pressure of the current environment, and the slope of the current road surface on which the vehicle is located, or may comprehensively consider any two of the current driving information of the vehicle, the atmospheric pressure of the current environment, and the slope of the current road surface on which the vehicle is located, or may comprehensively consider the current driving information of the vehicle, the atmospheric pressure of the current environment, and the slope of the current road surface on which the vehicle is located, and use a table lookup method to obtain a correction value of the target SOC of the power battery, thereby correcting the basic value of the target SOC of the power battery through the correction value, so that the final target SOC value is more accurate.

[0083] In some embodiments, the above S103 may include:

[0084] If the current driving information of the vehicle is obtained, a first correction amount of the target SOC of the power battery is determined by looking up the table according to the current driving information of the vehicle;

[0085] If the atmospheric pressure of the current environment of the vehicle is obtained, a second correction amount of the target SOC of the power battery is determined by looking up the table according to the atmospheric pressure of the current environment of the vehicle;

[0086] If the slope of the road surface on which the vehicle is currently located is obtained, a third correction amount of the target SOC of the power battery is determined by looking up a table according to the slope of the road surface on which the vehicle is currently located;

[0087] The first correction amount, the second correction amount and the third correction amount are summed to obtain a correction value of the target SOC of the power battery.

[0088] Among them, if the current driving information of the vehicle is not obtained, the first correction amount is 0; if the atmospheric pressure of the current environment of the vehicle is not obtained, the second correction amount is 0; if the slope of the current road surface of the vehicle is not obtained, the third correction amount is 0.

[0089] This embodiment targets at least one of the three types of information, namely, the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle. If the corresponding information has been obtained, a table lookup method is used to obtain the correction amounts corresponding to the three types of information, namely, the first correction amount, the second correction amount, and the third correction amount; if the corresponding information has not been obtained, the correction amount corresponding to the unobtained information is 0. The first correction amount, the second correction amount, and the third correction amount are summed to obtain the correction value of the target SOC of the power battery.

[0090] In some embodiments, the current driving information of the vehicle includes at least one of a current driving mode of the vehicle, a current speed of the vehicle, and a power currently consumed by a high-voltage accessory of the vehicle;

[0091] The above-mentioned method of determining the first correction amount of the target SOC of the power battery by looking up a table based on the current driving information of the vehicle includes:

[0092] If the current driving mode of the vehicle is obtained, a first SOC compensation amount corresponding to the current driving mode of the vehicle is determined according to a first preset table; the first preset table stores a correspondence between the driving mode and the first SOC compensation amount;

[0093] If the current speed of the vehicle is obtained, the second SOC compensation amount corresponding to the current speed of the vehicle is determined according to a second preset table; the second preset table stores the corresponding relationship between the vehicle speed and the second SOC compensation amount;

[0094] If the power currently consumed by the high-voltage accessory of the vehicle is obtained, a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessory of the vehicle is determined according to a third preset table; the third preset table stores a correspondence between the power consumed by the high-voltage accessory and the third SOC compensation amount;

[0095] The first correction amount of the target SOC of the power battery is obtained by summing a first SOC compensation amount corresponding to the current driving mode of the vehicle, a second SOC compensation amount corresponding to the current speed of the vehicle, and a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle.

[0096] Among them, if the current driving mode of the vehicle is not obtained, the first SOC compensation amount corresponding to the current driving mode of the vehicle is not 0; if the current speed of the vehicle is not obtained, the second SOC compensation amount corresponding to the current speed of the vehicle is 0; if the current power consumed by the high-voltage accessories of the vehicle is not obtained, the third SOC compensation amount corresponding to the current power consumed by the high-voltage accessories of the vehicle is 0.

[0097] The first preset table stores the correspondence between the driving mode and the first SOC compensation amount, and the first preset table can be obtained by pre-calibration. The first SOC compensation amount corresponding to the current driving mode of the vehicle can be obtained by querying the first preset table.

[0098] The relationship between the driving mode and the target SOC is that when the vehicle is in a driving mode with low demand for driving torque, the target SOC value needs to be increased to increase the power generation, thereby increasing the engine operating point and storing more electricity to meet the subsequent high power demand conditions. Exemplarily, the first preset table can be shown in Table 1. For driving modes not specified in the table, the corresponding first SOC compensation amount can be considered to be 0.

[0099] Table 1 The first preset table

[0100] Driving Mode Sport mode Snow Mode Mud Mode Sand Mode First SOC compensation amount (%) 3 5 5 5

[0101] The second preset table stores the correspondence between the vehicle speed and the second SOC compensation amount, and the second preset table can be obtained by pre-calibration. The second SOC compensation amount corresponding to the current vehicle speed can be obtained by querying the second preset table.

[0102] The relationship between the vehicle speed and the target SOC is that when the vehicle speed is high, the target SOC value needs to be increased to increase the power generation, thereby increasing the engine operating point, so that the battery can store more electricity under high vehicle speed conditions to meet the low vehicle speed. The vehicle can travel purely on electricity. Exemplarily, the second preset table can be shown in Table 2. The higher the vehicle speed, the greater the second SOC compensation amount.

[0103] Table 2 Second preset table

[0104]

[0105] The third preset table stores the correspondence between the power consumption of the high-voltage accessories and the third SOC compensation amount, and the third preset table can be obtained by pre-calibration. By querying the third preset table, the third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle can be obtained.

[0106] The relationship between the power consumption of the high-voltage accessories and the target SOC is that since the high-voltage accessories consume the power of the power battery when working, the power consumption of the high-voltage accessories needs to be considered when calculating the value of the target SOC. Exemplarily, the third preset table can be shown in Table 3. The higher the power consumption of the high-voltage accessories, the greater the third SOC compensation amount. When the power consumption of the high-voltage accessories reaches a certain value, the third SOC compensation amount no longer changes.

[0107] Table 3 The third preset table

[0108] Power consumption of high voltage accessories (kw) 0 1 2 3 4 5 6 7 Third SOC compensation amount (%) 0 0 1.5 2 2.5 3 3 3

[0109] The first SOC compensation amount corresponding to the vehicle's current driving mode, the second SOC compensation amount corresponding to the vehicle's current speed, and the third SOC compensation amount corresponding to the power currently consumed by the vehicle's high-voltage accessories are added together to obtain a first correction amount of the target SOC of the power battery, that is, the correction amount of the target SOC corresponding to the vehicle's current driving information.

[0110] In some embodiments, the second correction value of the target SOC of the power battery is determined by looking up a table according to the atmospheric pressure of the current environment of the vehicle, including:

[0111] According to a fourth preset table, a fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle is determined as a second correction amount of the target SOC of the power battery; the fourth preset table stores a correspondence between the atmospheric pressure and the fourth SOC compensation amount.

[0112] The fourth preset table stores the correspondence between the atmospheric pressure and the fourth SOC compensation amount, and the fourth preset table can be obtained by pre-calibration. By querying the fourth preset table, the fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle can be obtained, and the fourth SOC compensation amount is the second correction amount of the target SOC of the power battery.

[0113] The relationship between atmospheric pressure and target SOC is that when the vehicle is in an environment with low atmospheric pressure such as a plateau, the engine operating point is low due to the influence of atmospheric pressure, and the target SOC value needs to be increased to improve the engine operating point and ensure the driving performance of the vehicle. Exemplarily, the fourth preset table can be shown in Table 4. The lower the atmospheric pressure, the greater the fourth SOC compensation amount. When the atmospheric pressure drops to a certain value, the fourth SOC compensation amount no longer changes.

[0114] Table 4 Fourth preset table

[0115] Atmospheric pressure (kPa) 50 60 70 80 90 100 110 120 Fourth SOC compensation amount (%) 3.5 3.5 3.5 2.5 2 0 0 0

[0116] In some embodiments, the current driving information of the vehicle includes the current speed of the vehicle;

[0117] The above-mentioned method of determining the third correction amount of the target SOC of the power battery by looking up a table according to the slope of the current road surface on which the vehicle is located includes:

[0118] According to the fifth preset table, the fifth SOC compensation amount corresponding to the current slope of the vehicle's road surface and the current vehicle speed is determined as the third correction amount of the target SOC of the power battery; the fifth preset table stores the correspondence between the road slope, vehicle speed and the fifth SOC compensation amount.

[0119] In this embodiment, when considering the effect of the road slope on the target SOC of the power battery, the current speed of the vehicle in the current driving information of the vehicle is obtained by default, so that the effect of the vehicle speed and the road slope on the target SOC of the power battery can be comprehensively considered.

[0120] The fifth preset table stores the correspondence between the road slope, the vehicle speed and the fifth SOC compensation amount, and the fifth preset table can be obtained by pre-calibration. By querying the fifth preset table, the fifth SOC compensation amount corresponding to the current road slope of the vehicle and the current vehicle speed of the vehicle can be obtained, and the fifth SOC compensation amount is the third correction amount of the target SOC of the power battery.

[0121] The relationship between the road slope and the target SOC is that when the slope is large, the target SOC value needs to be increased to increase the engine operating point and provide more driving power for the motor to ensure the climbing function. When considering the road slope factor, the vehicle speed must also be considered. When the vehicle speed is fixed, the greater the road slope, the greater the fifth SOC compensation amount. When the road slope is fixed, if it is uphill, the greater the vehicle speed, the greater the fifth SOC compensation amount. When the vehicle speed reaches a certain value (for example, 30km / h), the fifth SOC compensation amount no longer changes; if it is downhill, the greater the vehicle speed, the smaller the fifth SOC compensation amount. When the vehicle speed reaches a certain value (for example, 30km / h), the fifth SOC compensation amount no longer changes. The road slope is greater than 0, which is an uphill slope, and the road slope is less than 0, which is a downhill slope. Exemplarily, the fifth preset table can be shown in Table 5, in which X is the vehicle speed (km / h), Y is the road slope (°), and Z is the fifth SOC compensation amount (%).

[0122] Table 5 Fifth preset table

[0123]

[0124] In S104 , the basic value of the target SOC of the power battery is corrected according to the correction value of the target SOC of the power battery to obtain a final value of the target SOC of the power battery.

[0125] The basic value of the target SOC of the power battery and the corrected value of the target SOC of the power battery are added to obtain the final value of the target SOC of the power battery.

[0126] The power generation power under the corresponding series power generation condition can be obtained by the final value of the target SOC of the power battery. Specifically, the power generation power corresponding to the final value of the target SOC of the power battery can be obtained by looking up a table, or the corresponding power generation power can be obtained by looking up a table by the difference between the final value of the target SOC of the power battery and the current SOC of the power battery.

[0127] In some embodiments, after S104, the target SOC determination method under the series power generation condition further includes:

[0128] If the target SOC value input by the user is detected, the final value of the target SOC of the power battery is compared with the target SOC value input by the user;

[0129] If the final value of the target SOC of the power battery is less than the target SOC value input by the user, the final value of the target SOC of the power battery is updated to the target SOC value input by the user.

[0130] This embodiment provides a function of user-defined target SOC. If the user customizes the target SOC value, that is, the target SOC value input by the user is detected, the final value of the target SOC of the power battery is compared with the target SOC value input by the user. If the final value of the target SOC of the power battery is less than the target SOC value input by the user, the final value of the target SOC of the power battery is updated to the target SOC value input by the user; if the final value of the target SOC of the power battery is not less than the target SOC value input by the user, the final value of the target SOC of the power battery is kept unchanged, thereby ensuring that the final value of the target SOC is not lower than the user's customized value, and fully considering the user's wishes.

[0131] The target SOC determination method under the series power generation condition provided in this embodiment can be applied to hybrid vehicles, and can also be applied to other applicable vehicles, without specific limitation here.

[0132] This embodiment determines the basic value of the target SOC of the power battery by table lookup through the current SOC of the power battery, determines the correction value of the target SOC of the power battery by table lookup through at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle, corrects the basic value of the target SOC of the power battery by the correction value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery, and can correct the target SOC according to the actual driving information of the vehicle, the actual environment information of the vehicle and the actual road surface information of the vehicle to ensure that the target SOC meets the actual operation requirements of the vehicle, thereby ensuring that the engine operating point is within the optimal operating range, thereby improving the power and economy of the vehicle.

[0133] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0134] The following is an embodiment of the device of the present application. For details not described in detail, please refer to the corresponding method embodiment described above.

[0135] Figure 2 The structure diagram of the target SOC determination device under the series power generation condition provided by the embodiment of the present application is shown. For the convenience of explanation, only the part related to the embodiment of the present application is shown, which is described in detail as follows:

[0136] like Figure 2 As shown, the target SOC determination device 30 under the series power generation condition includes: a basic value determination module 31, an acquisition module 32, a correction value determination module 33 and a final value determination module 34.

[0137] The basic value determination module 31 is used to obtain the current SOC of the power battery of the vehicle, and determine the basic value of the target SOC of the power battery by looking up the table according to the current SOC of the power battery;

[0138] An acquisition module 32, used to acquire at least one of the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle;

[0139] A correction value determination module 33, configured to determine a correction value of a target SOC of the power battery by looking up a table according to at least one of current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface on which the vehicle is located;

[0140] The final value determination module 34 is used to correct the basic value of the target SOC of the power battery according to the corrected value of the target SOC of the power battery to obtain the final value of the target SOC of the power battery.

[0141] In the embodiment of the present application, a basic value determination module is used to determine a basic value of a target SOC of a power battery by table lookup according to a current SOC of the power battery. A correction value determination module is used to determine a correction value of the target SOC of the power battery by table lookup according to at least one of current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle. A final value determination module is used to correct the basic value of the target SOC of the power battery according to the correction value of the target SOC of the power battery to obtain a final value of the target SOC of the power battery. The target SOC can be corrected according to actual driving information of the vehicle, information about the actual environment of the vehicle, and information about the actual road surface of the vehicle to ensure that the target SOC meets the actual operating requirements of the vehicle, thereby ensuring that the engine operating point is within the optimal operating range, thereby improving the power and economy of the vehicle.

[0142] In a possible implementation, the correction value determination module 33 is specifically used to:

[0143] If the current driving information of the vehicle is obtained, a first correction amount of the target SOC of the power battery is determined by looking up the table according to the current driving information of the vehicle;

[0144] If the atmospheric pressure of the current environment of the vehicle is obtained, a second correction amount of the target SOC of the power battery is determined by looking up the table according to the atmospheric pressure of the current environment of the vehicle;

[0145] If the slope of the road surface on which the vehicle is currently located is obtained, a third correction amount of the target SOC of the power battery is determined by looking up a table according to the slope of the road surface on which the vehicle is currently located;

[0146] The first correction amount, the second correction amount and the third correction amount are summed to obtain a correction value of the target SOC of the power battery.

[0147] In one possible implementation, the current driving information of the vehicle includes at least one of a current driving mode of the vehicle, a current speed of the vehicle, and a power currently consumed by a high-voltage accessory of the vehicle;

[0148] The correction value determination module 33 is specifically used for:

[0149] If the current driving mode of the vehicle is obtained, a first SOC compensation amount corresponding to the current driving mode of the vehicle is determined according to a first preset table; the first preset table stores a correspondence between the driving mode and the first SOC compensation amount;

[0150] If the current speed of the vehicle is obtained, the second SOC compensation amount corresponding to the current speed of the vehicle is determined according to a second preset table; the second preset table stores the corresponding relationship between the vehicle speed and the second SOC compensation amount;

[0151] If the power currently consumed by the high-voltage accessory of the vehicle is obtained, a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessory of the vehicle is determined according to a third preset table; the third preset table stores a correspondence between the power consumed by the high-voltage accessory and the third SOC compensation amount;

[0152] The first correction amount of the target SOC of the power battery is obtained by summing a first SOC compensation amount corresponding to the current driving mode of the vehicle, a second SOC compensation amount corresponding to the current speed of the vehicle, and a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle.

[0153] In a possible implementation, the correction value determination module 33 is specifically used to:

[0154] According to a fourth preset table, a fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle is determined as a second correction amount of the target SOC of the power battery; the fourth preset table stores a correspondence between the atmospheric pressure and the fourth SOC compensation amount.

[0155] In a possible implementation, the current driving information of the vehicle includes the current speed of the vehicle;

[0156] The correction value determination module 33 is specifically used for:

[0157] According to the fifth preset table, the fifth SOC compensation amount corresponding to the current slope of the vehicle's road surface and the current vehicle speed is determined as the third correction amount of the target SOC of the power battery; the fifth preset table stores the correspondence between the road slope, vehicle speed and the fifth SOC compensation amount.

[0158] In a possible implementation, the target SOC determination device under the series power generation condition further includes: a user-defined module.

[0159] The user-defined module is used to compare the final value of the target SOC of the power battery with the target SOC value input by the user if the target SOC value input by the user is detected; if the final value of the target SOC of the power battery is less than the target SOC value input by the user, the final value of the target SOC of the power battery is updated to the target SOC value input by the user.

[0160] In a possible implementation, the basic value determination module 31 is specifically used to:

[0161] Obtain the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself;

[0162] According to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself, a basic value of the target SOC of the power battery is determined by looking up a table.

[0163] The present application also provides a computer program product having a program code, which, when executed in a corresponding processor, controller, computing device or electronic device, performs the steps in any of the above-mentioned target SOC determination method embodiments under the series power generation condition, for example: Figure 1 S101 to S104 shown. Those skilled in the art will appreciate that the methods and devices proposed in the embodiments of the present application can be implemented in various forms of hardware, software, firmware, a dedicated processor or a combination thereof. A dedicated processor may include an application specific integrated circuit (ASIC), a reduced instruction set computer (RISC) and / or a field programmable gate array (FPGA). The proposed method and device are preferably implemented as a combination of hardware and software. The software is preferably installed on a program storage device as an application. It is typically based on a machine with a computer platform having hardware, such as one or more central processing units (CPUs), random access memories (RAMs) and one or more input / output (I / O) interfaces. An operating system is typically also installed on the computer platform. The various processes and functions described herein may be part of an application, or a portion thereof may be executed by an operating system.

[0164] Figure 3 Schematic diagram of an electronic device provided in an embodiment of the present application. Figure 3As shown, the electronic device 4 of this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, the steps in the above-mentioned target SOC determination method embodiments under each series power generation condition are implemented, for example Figure 1 Alternatively, when the processor 40 executes the computer program 42, the functions of each module / unit in the above-mentioned device embodiments are realized, for example, Figure 2 Functionality of the modules / units 31 to 34 shown.

[0165] Exemplarily, the computer program 42 may be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to complete / implement the solution provided by the present application. The one or more modules / units may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program 42 in the electronic device 4. For example, the computer program 42 may be divided into Figure 2 Modules / units 31 to 34 are shown.

[0166] The electronic device 4 may be a vehicle controller or other device. The electronic device 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 3 It is only an example of the electronic device 4 and does not constitute a limitation of the electronic device 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0167] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0168] The memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used to store the computer program and other programs and data required by the electronic device. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0169] Corresponding to the above-mentioned electronic device, an embodiment of the present application further provides a vehicle, comprising the above-mentioned electronic device, which has the same beneficial effects as the above-mentioned electronic device.

[0170] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0171] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0172] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0173] In the embodiments provided in the present application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0174] 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.

[0175] 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.

[0176] If the integrated module / 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 present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the target SOC determination method embodiment under each series power generation condition can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practices in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practices, computer-readable media does not include electrical carrier signals and telecommunication signals.

[0177] In addition, the embodiments shown in the drawings of the present application or the features of the various embodiments mentioned in this specification are not necessarily understood as independent embodiments. Instead, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments not described in words or with reference to the drawings.

[0178] The embodiments described above 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, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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, and should all be included in the protection scope of the present application.

Claims

1. A method for determining a target SOC under a series power generation condition, characterized in that: include: Acquiring a current SOC of a power battery of the vehicle, and determining a basic value of a target SOC of the power battery by looking up a table according to the current SOC of the power battery; the target SOC of the power battery is used to adjust the power generation power of the vehicle under a series power generation condition; Acquiring current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle, and the slope of the current road surface of the vehicle; determining a correction value of the target SOC of the power battery by looking up a table according to the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle; the correction value of the target SOC of the power battery includes a first correction value corresponding to the current driving information of the vehicle, a second correction value corresponding to the atmospheric pressure of the current environment of the vehicle and a third correction value corresponding to the slope of the current road surface of the vehicle; Correcting a basic value of the target SOC of the power battery according to the corrected value of the target SOC of the power battery to obtain a final value of the target SOC of the power battery; If the target SOC value input by the user is detected, comparing the final value of the target SOC of the power battery with the target SOC value input by the user; If the final value of the target SOC of the power battery is less than the target SOC value input by the user, updating the final value of the target SOC of the power battery to the target SOC value input by the user; Wherein, determining the basic value of the target SOC of the power battery by looking up a table according to the current SOC of the power battery includes: Acquiring the temperature of the environment in which the power battery is currently located and the current temperature of the power battery itself; The basic value of the target SOC of the power battery is determined by looking up a table according to the current SOC of the power battery, the temperature of the environment in which the power battery is currently located, and the current temperature of the power battery itself.

2. The method for determining the target SOC under the series power generation condition according to claim 1, characterized in that: The determining the correction value of the target SOC of the power battery by looking up a table according to the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle includes: If the current driving information of the vehicle is obtained, determining a first correction amount of the target SOC of the power battery by looking up the table according to the current driving information of the vehicle; If the atmospheric pressure of the current environment of the vehicle is obtained, determining a second correction amount of the target SOC of the power battery by looking up the table according to the atmospheric pressure of the current environment of the vehicle; If the slope of the road surface on which the vehicle is currently located is obtained, a third correction amount of the target SOC of the power battery is determined by looking up a table according to the slope of the road surface on which the vehicle is currently located; The first correction amount, the second correction amount and the third correction amount are summed to obtain a correction value of the target SOC of the power battery.

3. The method for determining the target SOC under the series power generation condition according to claim 2, characterized in that: The current driving information of the vehicle includes at least one of a current driving mode of the vehicle, a current speed of the vehicle, and a power currently consumed by a high-voltage accessory of the vehicle; The determining, according to the current driving information of the vehicle, a first correction amount of the target SOC of the power battery by table lookup includes: If the current driving mode of the vehicle is acquired, determining a first SOC compensation amount corresponding to the current driving mode of the vehicle according to a first preset table; the first preset table stores a correspondence between the driving mode and the first SOC compensation amount; If the current speed of the vehicle is obtained, a second SOC compensation amount corresponding to the current speed of the vehicle is determined according to a second preset table; the second preset table stores a correspondence between the vehicle speed and the second SOC compensation amount; If the power currently consumed by the high-voltage accessory of the vehicle is obtained, a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessory of the vehicle is determined according to a third preset table; the third preset table stores a correspondence between the power consumed by the high-voltage accessory and the third SOC compensation amount; A first correction amount of the target SOC of the power battery is obtained by summing a first SOC compensation amount corresponding to the current driving mode of the vehicle, a second SOC compensation amount corresponding to the current speed of the vehicle, and a third SOC compensation amount corresponding to the power currently consumed by the high-voltage accessories of the vehicle.

4. The method for determining the target SOC under the series power generation condition according to claim 2, characterized in that: The determining, according to the atmospheric pressure of the current environment of the vehicle, the second correction amount of the target SOC of the power battery by looking up a table, comprises: According to a fourth preset table, a fourth SOC compensation amount corresponding to the atmospheric pressure of the current environment of the vehicle is determined as a second correction amount of the target SOC of the power battery; the fourth preset table stores a correspondence between the atmospheric pressure and the fourth SOC compensation amount.

5. The method for determining the target SOC under the series power generation condition according to claim 2, characterized in that: The current driving information of the vehicle includes the current speed of the vehicle; The determining, according to the slope of the current road surface of the vehicle, by table lookup, the third correction amount of the target SOC of the power battery comprises: According to the fifth preset table, the fifth SOC compensation amount corresponding to the current slope of the road surface of the vehicle and the current vehicle speed of the vehicle is determined as the third correction amount of the target SOC of the power battery; the fifth preset table stores the correspondence between the road surface slope, the vehicle speed and the fifth SOC compensation amount.

6. A device for determining target SOC under series power generation conditions, characterized in that: include: A basic value determination module, used to obtain the current SOC of the power battery of the vehicle, and determine the basic value of the target SOC of the power battery by looking up the table according to the current SOC of the power battery; the target SOC of the power battery is used to adjust the power generation power of the vehicle under the series power generation condition; An acquisition module, used to acquire the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface of the vehicle; a correction value determination module, configured to determine the correction value of the target SOC of the power battery by table lookup according to the current driving information of the vehicle, the atmospheric pressure of the current environment of the vehicle and the slope of the current road surface on which the vehicle is located; the correction value of the target SOC of the power battery includes a first correction value corresponding to the current driving information of the vehicle, a second correction value corresponding to the atmospheric pressure of the current environment of the vehicle and a third correction value corresponding to the slope of the current road surface on which the vehicle is located; a final value determination module, configured to correct a basic value of the target SOC of the power battery according to a correction value of the target SOC of the power battery, so as to obtain a final value of the target SOC of the power battery; A user-defined module, configured to compare a final value of the target SOC of the power battery with the target SOC value input by the user if a target SOC value input by the user is detected; If the final value of the target SOC of the power battery is less than the target SOC value input by the user, updating the final value of the target SOC of the power battery to the target SOC value input by the user; Among them, the basic value determination module is specifically used to: obtain the temperature of the current environment of the power battery and the current temperature of the power battery itself; determine the basic value of the target SOC of the power battery by looking up a table according to the current SOC of the power battery, the temperature of the current environment of the power battery and the current temperature of the power battery itself.

7. A vehicle, comprising an electronic device, the electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for determining the target SOC under the series power generation condition as described in any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for determining the target SOC under the series power generation condition as described in any one of claims 1 to 5 above are implemented.

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