Vehicle battery control method and vehicle

Abstract

The invention provides a vehicle battery control method and a vehicle, and relates to the technical field of power batteries. The method comprises the following steps: acquiring battery parameters of a power battery in a vehicle, mileage parameters of the vehicle and a power type; determining a battery health state of the power battery based on the battery parameter, the mileage parameter and the power type; and controlling the operation of the power battery based on the battery health state. Based on the scheme, the SOH accuracy of the power battery can be improved, so that the safe operation of the power battery is ensured.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and more particularly to a control method for a vehicle battery and a vehicle in the field of power battery technology. Background Technology

[0002] The State of Health (SOH) of a vehicle's power battery is closely related to its safe operation. Deviations in the SOH will adversely affect the battery's safe operation. Therefore, ensuring the accuracy of the SOH is crucial for the safe operation of the power battery.

[0003] Therefore, improving the accuracy of the State of Health (SOH) of power batteries is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a control method for a vehicle battery and a vehicle, which can improve the accuracy of the State of Harmony (SOH) of the power battery to ensure the safe operation of the power battery.

[0005] In a first aspect, this application provides a method for controlling a vehicle battery, the method comprising: Obtain the battery parameters of the vehicle's power battery, the vehicle's mileage parameters, and the power type; The battery health status of the power battery is determined based on battery parameters, driving range parameters, and power type. The operation of the power battery is controlled based on the battery's health status.

[0006] In this embodiment, when the battery parameters, vehicle mileage parameters, and power type of the power battery in the vehicle are obtained, the battery health status of the power battery can be determined by combining these parameters, allowing for control of the power battery's operation. This embodiment determines the power battery health status using these parameters, considering the influence of the power battery, vehicle mileage, and power type, thus providing a more comprehensive assessment and improving the accuracy of the battery health status determination. Consequently, controlling the power battery's operation with a more accurate battery health status is more accurate and safer.

[0007] In conjunction with the first aspect, in certain implementations of the first aspect, the determination of the battery health status based on battery parameters, driving range parameters, and power type includes: Based on battery parameters, driving range parameters, and power type, the target throughput of the power battery is determined, where the target throughput represents the total amount of electricity transferred by the power battery. Determine the battery health status based on the target throughput.

[0008] In this embodiment, the total throughput (i.e., target throughput) of the power battery is first determined by the battery parameters of the power battery, the driving range parameters of the vehicle, and the power type. Then, the battery health status of the power battery is determined by the total throughput of the power battery. The battery parameters of the power battery, the driving range parameters of the vehicle, and the power type are quantified by the total throughput of the power battery, which further improves the accuracy of the battery health status of the power battery.

[0009] Combining the first aspect and the above-described implementation methods, in some implementation methods of the first aspect, the determination of the target throughput of the power battery based on battery parameters, driving range parameters, and power type includes: Based on battery parameters, determine whether the power battery is faulty; Under the condition that the power battery is fault-free and the driving range parameters are valid, the first throughput of the power battery when the vehicle is in motion is determined based on the battery parameters, driving range parameters and power type. Based on the driving range parameters, determine the second throughput of the power battery outside of vehicle driving. The sum of the first throughput and the second throughput is determined as the target throughput.

[0010] In this embodiment, the throughput of the power battery is determined only when the power battery is fault-free and the mileage parameters are valid. This avoids the problem of deviation in the determined throughput of the power battery when the power battery is faulty and / or the mileage parameters are invalid, and further improves the accuracy of the battery health status.

[0011] Furthermore, when determining the throughput of the power battery, the throughput corresponding to the power battery during vehicle operation and the throughput corresponding to the power battery outside of vehicle operation are taken into consideration, that is, the output and output of the power battery during driving and the throughput of the power battery when not driving, which is more comprehensive and further improves the accuracy of the power battery health status.

[0012] In conjunction with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the determination of the first throughput of the power battery during vehicle operation based on battery parameters, driving range parameters, and power type includes: The total output capacity of the power battery is determined based on the driving range parameters and power type. Based on battery parameters, driving range parameters, and power type, determine the total input capacity of the power battery; The sum of the total output power and the total input power is determined as the first throughput.

[0013] In this embodiment of the application, when determining the throughput of the power battery during driving, the output and input power of the power battery during vehicle operation are taken into account, which is more comprehensive and thus further improves the accuracy of the battery health status of the power battery.

[0014] In conjunction with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the aforementioned mileage parameter includes the vehicle's total mileage, and the determination of the total output capacity of the power battery based on the mileage parameter and the power type includes: Based on the power type, determine the pure electric driving range and hybrid driving range in the total driving range; Determine the first output capacity of the power battery corresponding to the pure electric driving range, and determine the second output capacity of the power battery corresponding to the hybrid driving range; The sum of the first output power and the second output power is determined as the total output power.

[0015] In this embodiment, the pure electric driving range and hybrid driving range in the total driving range of the vehicle are distinguished by the power type. The output power of the power battery under the pure electric driving range and the output power of the power battery under the hybrid driving range are determined respectively. This is a more comprehensive approach, thereby further improving the accuracy of the battery health status of the power battery.

[0016] In conjunction with the first aspect and the above-described implementation methods, in some implementation methods of the first aspect, the determination of the pure electric driving range and hybrid driving range in the total driving range based on the power type includes: When the power type is pure electric, the total driving range is determined as the pure electric driving range; When the power type is hybrid, the pure electric driving range and hybrid driving range in the total driving range are determined based on the preset proportions included in the driving range parameters. The preset proportions represent the allocation ratio of pure electric driving range and hybrid driving range in the total driving range.

[0017] In this embodiment, the pure electric driving range and hybrid driving range in the total driving range of the vehicle are distinguished by the power type. The pure electric driving range and hybrid driving range may differ depending on the power type, thereby improving the accuracy of the pure electric driving range and hybrid driving range in the total driving range. Furthermore, based on the more accurate pure electric driving range and hybrid driving range in the total driving range of the vehicle, the accuracy of the battery health status of the power battery is further improved.

[0018] Optionally, the preset percentage represents the proportion of pure electric driving range, hybrid driving range, and fuel driving range in the total driving range.

[0019] In conjunction with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the aforementioned mileage parameters include the total mileage of the vehicle, the aforementioned battery parameters include the rated capacity and full-charge range of the power battery, and the aforementioned determination of the total input capacity of the power battery based on the battery parameters, mileage parameters, and power type includes: When the power type is pure electric, the number of cycles of the power battery is determined based on the total driving range and the range on a full charge. When the power type is hybrid, the number of cycles of the power battery is determined based on the pure electric driving range, hybrid driving range and full charge range in the total driving range; The total input power is determined by multiplying the number of cycles by the rated power.

[0020] In this embodiment, the cycle count of the power battery corresponding to the power type is determined by the power type, making the determined cycle count of the power battery more accurate. Furthermore, based on the more accurate cycle count of the power battery, the accuracy of the battery health status is further improved.

[0021] In conjunction with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the aforementioned battery parameters also include the current state, voltage state, and temperature state of the power battery. The determination of whether a power battery is faulty based on these battery parameters includes: If the current state, voltage state, and temperature state are all detected to be valid, it is determined that the power battery is fault-free. If the current status, voltage status, and / or temperature status are all invalid, it is determined that the power battery is faulty.

[0022] In this embodiment, when determining whether a power battery is faulty, the influence of three dimensions—current state, voltage state, and temperature state—is considered, providing a more comprehensive assessment and thus improving the accuracy of the result regarding whether the power battery is faulty. Furthermore, based on the improved accuracy of the result regarding whether the power battery is faulty, the accuracy of the battery health status is further improved.

[0023] In conjunction with the first aspect and the above implementations, in some implementations of the first aspect, before determining the battery health state based on the target throughput, the method further includes: Determine the difference between the target throughput and the third throughput, where the third throughput represents the throughput of the power battery stored in the vehicle; If the difference is greater than or equal to the first preset threshold and the third throughput is less than or equal to the second preset threshold, the battery health status is determined based on the target throughput, wherein the first preset threshold is greater than the second preset threshold.

[0024] In this embodiment of the application, when the difference between the target throughput and the third throughput of the power battery is greater than or equal to the first preset threshold, and the third throughput is less than or equal to the second preset threshold, it indicates that the deviation between the target throughput and the third throughput is too large, while the third throughput is small. This may be due to the failure of the third throughput, that is, the third throughput stored in the vehicle is unreliable. At this time, the execution condition of determining the battery health status based on the target throughput is met, ensuring the effectiveness of determining the battery health status based on the target throughput.

[0025] Secondly, this application provides a control device for a vehicle battery, the device comprising: The acquisition module is used to acquire the battery parameters of the power battery in the vehicle, the vehicle's driving range parameters, and the power type; The processing module is used to determine the battery health status of the power battery based on battery parameters, driving range parameters, and power type; and to control the operation of the power battery based on the battery health status.

[0026] Thirdly, this application provides a controller, including a storage module and a processing module. The storage module is used to store executable program code, and the processing module is used to call and run the executable program code from the storage module, causing the controller to execute the methods in the first aspect or any possible implementation of the first aspect.

[0027] Fourthly, this application provides a vehicle including a memory and a processor. The memory is used to store executable program code, and the processor is used to call and run the executable program code from the memory, causing the vehicle to perform the methods described in the first aspect or any possible implementation thereof.

[0028] Fifthly, this application provides a computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method described in the first aspect or any possible implementation thereof.

[0029] Sixthly, this application provides a computer-readable storage medium storing computer program code that, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a scenario illustrating the vehicle battery control method provided in an embodiment of this application; Figure 2 This is a schematic flowchart of a vehicle battery control method provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the vehicle battery control device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the controller provided in an embodiment of this application; Figure 5 This is a schematic diagram of the vehicle structure provided in the embodiments of this application. Detailed Implementation

[0031] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0032] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] To effectively reduce environmental pollution and operating costs caused by traditional gasoline-powered vehicles, new energy vehicles are being gradually popularized among users. New energy vehicles are generally equipped with power batteries, which serve as one of their driving energy sources. The State of Health (SOH) of the power battery is closely related to its safe operation; any deviation in SOH will adversely affect its safe operation. Therefore, to ensure the safe operation of the power battery, the accuracy of the SOH must be ensured. Furthermore, with an accurate SOH, the operating performance of the power battery can be guaranteed, preventing weak battery performance from reducing the driving range of the new energy vehicle, thus ensuring its driving range.

[0034] For example, the main reasons for the deviation in SOH (State of Health) are at least one of the following: replacement of the Battery Management System (BMS) controller or failure of non-volatile memory (NVM) storage. Specifically, after replacing the BMS controller, the new BMS controller cannot retain the SOH and battery throughput stored in the old BMS controller. The battery's SOH of 100 becomes invalid, and the default SOH will be set to 100, even though the actual SOH of the battery is lower than 100, resulting in an inflated SOH. Similarly, if the NVM storage fails, the stored battery SOH becomes unreliable. The default SOH of 100 will also be set to 100, leading to an inflated SOH. Generally, the State of Health (SOH) of a power battery can be represented by a range of 0 to 100. 100 indicates that the power battery is undamaged and in excellent health; 0 indicates that the power battery is severely damaged and in extremely poor health. In other words, the higher the SOH of the power battery, the better its health and the less damage it is.

[0035] In this context, "new energy vehicles" (which can be simply referred to as "vehicles") can refer to vehicles whose power unit includes a drive motor, not just those that include an engine. That is, the power unit (also called the "drive unit") of a new energy vehicle can be a drive motor, or a drive motor and an engine. Examples include pure electric vehicles and hybrid electric vehicles. A pure electric vehicle's power unit is a drive motor, and its power type is pure electric power; the drive motor can directly drive the vehicle's wheels. A hybrid electric vehicle's power unit is an engine and / or a drive motor. Hybrid electric vehicles can include parallel hybrid electric vehicles and series hybrid electric vehicles. A parallel hybrid electric vehicle's power unit is an engine and / or a drive motor, and its power type is parallel hybrid; the drive motor and engine are connected in parallel, and both the engine and / or the drive motor can directly drive the vehicle's wheels. A series hybrid electric vehicle's power unit is an engine and a drive motor, and its power type is series hybrid; the drive motor and engine are connected in series, the engine cannot directly drive the vehicle's wheels, but the drive motor can directly drive the vehicle's wheels. Parallel hybrid vehicles can include hybrid electric vehicles (HEVs), such as plug-in hybrid electric vehicles (PHEVs); series hybrid vehicles can include extended-range electric vehicles (EREVs).

[0036] Figure 1 This is a schematic diagram of a scenario for the vehicle battery control method provided in an embodiment of this application.

[0037] For example, such as Figure 1 As shown, Figure 1 The system includes vehicle 101, which contains power battery 102. When the BMS controller in vehicle 101 is replaced, the default SOH of the power battery will be 100, resulting in a higher SOH and a deviation.

[0038] In view of this, this application proposes a vehicle battery control method and a vehicle. Through the embodiments of this application, a more accurate battery health status of the power battery is determined by jointly using the battery parameters of the power battery, the vehicle's mileage parameters, and the power type. Controlling the operation of the power battery with a more accurate battery health status is also more accurate and safer.

[0039] The following is combined with Figure 2 The control method for vehicle batteries provided in the embodiments of this application will be described in detail.

[0040] Figure 2 This is a flowchart illustrating a vehicle battery control method provided in an embodiment of this application. The method can be implemented by a vehicle (e.g., Figure 1 The vehicle 101 in the vehicle executes the command, or the controller in the vehicle executes the command.

[0041] For example, such as Figure 2 As shown, the method 200 includes the following implementation process: S210 obtains the battery parameters of the power battery in the vehicle, the vehicle's driving range parameters, and the power type.

[0042] For example, when the vehicle is detected to be powered on, in order to avoid deviations in the State of Health (SOH) of the power battery, the battery parameters of the power battery, the vehicle's mileage parameters, and the vehicle's power type can be obtained.

[0043] For example, when the vehicle detects that it is powered on, the vehicle can automatically trigger an operation instruction for the power battery. Upon detecting the operation instruction for the power battery, the vehicle can respond to the instruction and obtain the power battery parameters, the vehicle's mileage parameters, and the vehicle's power type. It should be understood that the power battery operation instruction is used to instruct the power battery to operate.

[0044] The battery parameters of a power battery may include at least one of the following: rated capacity, full-charge range, current state, voltage state, and temperature state. The rated capacity represents the maximum amount of electricity the power battery can store, and it is related to the battery model; different models have different rated capacities. The full-charge range represents the total distance the power battery can travel from a fully charged state (100% remaining capacity) to a fully discharged state (0% remaining capacity). The current state can be either valid or invalid. A valid current state indicates that the battery current is normal and there are no current-related faults, such as short circuits or open circuits. An invalid current state indicates an abnormal current and a current-related fault. For example, if the charging and discharging current can be detected normally during charging and discharging, the current state is valid; conversely, if no charging or discharging current is detected, the current state is invalid. The voltage status can be either valid or invalid. A valid voltage status indicates that the battery voltage is normal and there are no voltage-related faults, such as short circuits or open circuits. An invalid voltage status indicates that the battery voltage is abnormal and there is a voltage-related fault. For example, if the charging and discharging voltage can be detected normally during battery charging and discharging, the voltage status is valid; conversely, if no charging and discharging voltage is detected, the voltage status is invalid. Similarly, the temperature status can also be either valid or invalid. A valid temperature status indicates that the battery's temperature sensing device is functioning correctly and can detect the battery temperature normally, without affecting the battery's normal operation. An invalid temperature status indicates that the battery's temperature sensing device is faulty and cannot detect the battery temperature normally, which may affect the battery's normal operation.

[0045] The vehicle's mileage parameter can include the total mileage the vehicle has traveled up to the current moment. This total mileage is typically stored in the vehicle's infotainment software to prevent data loss. However, since the State of Harmony (SOH) of the battery is generally variable and stored in the Network Virtual Machine (NVM), it may become invalid. Furthermore, the vehicle's powertrain type can be either pure electric or hybrid.

[0046] S220 determines the battery health status of the power battery based on battery parameters, driving range parameters, and power type.

[0047] For example, the current state of equilibrium (SOH) of the power battery can be determined by the rated capacity of the power battery, the range on a full charge, the state of current, the state of voltage, the state of temperature, the total mileage of the vehicle, and the power type of the vehicle.

[0048] S230 controls the operation of the power battery based on the battery's health status.

[0049] For example, the power battery's electrical energy output can be controlled by the current State of Health (SOH) of the power battery. The power battery's electrical energy output can include output quantity and / or output charge intensity.

[0050] In such Figure 2 In method 200, when the battery parameters, vehicle mileage parameters, and power type of the power battery in the vehicle are obtained, the battery health status of the power battery can be determined by combining these parameters, allowing for control of the power battery's operation. This embodiment of the application determines the power battery health status by using the battery parameters, vehicle mileage parameters, and power type, thus taking into account the influence of three dimensions: power battery, vehicle mileage, and power type. This more comprehensive approach improves the accuracy of the determined battery health status. Consequently, controlling the operation of the power battery with a more accurate battery health status is more accurate and safer.

[0051] For example, when the vehicle's battery management system (BMS) is replaced or its storage fails, the obtained State of Health (SOH) of the power battery may be too high, making it impossible to obtain a valid SOH. Therefore, in this embodiment, when the vehicle's BMS is replaced or its storage fails, a more accurate SOH of the power battery is determined by the battery parameters, vehicle mileage parameters, and power type. It should be understood that if the vehicle's BMS is not replaced or its storage is valid, the SOH of the power battery is not invalid and is relatively accurate. The SOH stored in the BMS can still be used as the standard, and the operation of the power battery can be directly controlled using the SOH stored in the BMS. In other words, this embodiment determines the SOH of the power battery only when the vehicle's BMS is replaced or its storage fails, using the battery parameters, vehicle mileage parameters, and power type.

[0052] It should be noted that S210~S230 above is a simplified description of the vehicle battery control method provided in the embodiments of this application. The following will further elaborate on... Figure 2 The specific implementation methods shown in the embodiments are described in detail below: When executing S220, the above-mentioned determination of the battery health status based on battery parameters, driving range parameters, and power type includes: determining the target throughput of the power battery based on battery parameters, driving range parameters, and power type; and determining the battery health status based on the target throughput.

[0053] The target throughput represents the total amount of electricity transferred by the power battery, measured in kilowatt-hours (kWh). The total amount of electricity transferred by the power battery can be represented as the cumulative amount of electricity output and input, i.e., the total amount of electricity transferred = the total amount of electricity output + the total amount of electricity input. For example, if the total amount of electricity output by the power battery is 100 kWh and the total amount of electricity input is 120 kWh, then the total amount of electricity transferred by the power battery = 100 kWh + 120 kWh = 220 kWh.

[0054] For example, the target throughput of the power battery can be determined by the rated capacity of the power battery, the range on a full charge, the state of current, the state of voltage, the state of temperature, the total driving range of the vehicle, and the power type of the vehicle.

[0055] The rated capacity of a power battery determines its operating time or driving range. The rated capacity and driving range are positively correlated, and the rated capacity can be obtained from the battery's rated capacity and rated voltage. For example, when the rated capacity of a power battery is measured in ampere-hours (Ah) and the rated voltage in volts (V), the rated capacity of the power battery = rated capacity × rated voltage ÷ 1000. For instance, a power battery with a rated capacity of 100Ah and a rated voltage of 12V corresponds to a rated capacity of 1.2kWh.

[0056] For example, in a preset relationship, the State of Harmony (SOH) of the power battery corresponding to the target throughput can be determined by the target throughput of the power battery. The preset relationship can represent the correspondence between the power battery's throughput and its SOH. The preset relationship can be represented in at least one of the following formats: table, relationship diagram, etc. Table 1 provides an example illustration of the preset relationship: Table 1

[0057] In Table 1, when the throughput of the power battery is A, the corresponding SOH of the power battery is 95%. When the throughput of the power battery is B, the corresponding SOH of the power battery is 82%. When the throughput of the power battery is C, the corresponding SOH of the power battery is 70%.

[0058] In this embodiment, the total throughput (i.e., target throughput) of the power battery is first determined by the battery parameters of the power battery, the driving range parameters of the vehicle, and the power type. Then, the battery health status of the power battery is determined by the total throughput of the power battery. The battery parameters of the power battery, the driving range parameters of the vehicle, and the power type are quantified by the total throughput of the power battery, which further improves the accuracy of the battery health status of the power battery.

[0059] In one implementation, before determining the battery health status based on the target throughput, the difference between the target throughput and the third throughput is determined; if the difference is greater than or equal to a first preset threshold and the third throughput is less than or equal to a second preset threshold, the battery health status is determined based on the target throughput.

[0060] The third throughput refers to the throughput of the power battery stored in the vehicle. This third throughput may fail or may still be effective.

[0061] For example, since the third throughput stored in the vehicle may fail or deviate, it is necessary to determine whether the third throughput has failed by using the difference between the target throughput and the third throughput, as well as the magnitude of the third throughput.

[0062] Specifically, the third throughput of vehicle storage is first obtained from NVM, and then the difference between the target throughput and the third throughput is calculated. The third throughput is then used to determine whether it has failed.

[0063] If the difference is greater than or equal to the first preset threshold, and the third throughput is less than or equal to the second preset threshold, it indicates that the deviation between the target throughput and the third throughput is too large, while the third throughput is relatively small. This may be due to the failure of the third throughput, meaning that the third throughput stored in the vehicle is unreliable. There may be a situation where the vehicle's battery management system has been replaced or the battery management system storage has failed. In this case, the execution conditions for determining the battery health status based on the target throughput are met, and this can be recorded as an identifier value "1". Therefore, the first throughput needs to be corrected. When the difference is greater than or equal to the first preset threshold, and the third throughput is less than or equal to the second preset threshold, the target throughput can be used instead of the first throughput, and the above-mentioned determination of the battery health status based on the target throughput can be performed.

[0064] If the difference is less than the first preset threshold and / or the third throughput is greater than the second preset threshold, it indicates that the deviation between the target throughput and the third throughput is small, while the third throughput is large. The third throughput is not invalid and is relatively accurate, meaning the vehicle's stored third throughput is reliable. Generally, there is no situation where the vehicle's battery management system has been replaced or the battery management system storage has failed. Therefore, the execution conditions for determining battery health status based on the target throughput are not met, and this can be recorded as a flag value of "0". Thus, there is no need to correct the first throughput. When the difference is less than the first preset threshold and / or the third throughput is greater than the second preset threshold, the target throughput is not used to replace the first throughput, and the above-mentioned determination of battery health status based on the target throughput is not executed. Furthermore, this third throughput can be used to control the operation of the power battery.

[0065] The first preset threshold is greater than the second preset threshold. The first preset threshold represents the lowest safe threshold for determining whether the deviation between the target throughput and the third throughput is too large, for example, 3000kWh or 2000kWh, which is not limited in this embodiment. The second preset threshold represents the highest safe threshold for determining whether the third throughput is too small, for example, 10kWh or 12kWh, which is not limited in this embodiment. In other words, the first preset threshold is significantly greater than the second preset threshold.

[0066] In this embodiment of the application, when the difference between the target throughput and the third throughput of the power battery is greater than or equal to the first preset threshold, and the third throughput is less than or equal to the second preset threshold, it indicates that the deviation between the target throughput and the third throughput is too large, while the third throughput is small. This may be due to the failure of the third throughput, that is, the third throughput stored in the vehicle is unreliable. At this time, the execution condition of determining the battery health status based on the target throughput is met, ensuring the effectiveness of determining the battery health status based on the target throughput.

[0067] In one implementation, determining the target throughput of the power battery based on battery parameters, mileage parameters, and power type includes: determining whether the power battery is faulty based on battery parameters; if the power battery is fault-free and the mileage parameters are valid, determining a first throughput of the power battery when the vehicle is in motion based on battery parameters, mileage parameters, and power type; determining a second throughput of the power battery when the vehicle is not in motion based on mileage parameters; and determining the sum of the first throughput and the second throughput as the target throughput.

[0068] Optionally, the above-mentioned determination of whether the power battery is faulty based on battery parameters includes: determining that the power battery is fault-free when the current state, voltage state, and temperature state are all valid; and determining that the power battery is faulty when the current state, voltage state, and / or temperature state are all invalid.

[0069] In this context, "no fault in the power battery" means that the power battery currently has no hardware faults and is operating normally. "Fault in the power battery" means that the power battery currently has hardware faults and cannot operate normally.

[0070] In this embodiment, when determining whether a power battery is faulty, the influence of three dimensions—current state, voltage state, and temperature state—is considered, providing a more comprehensive assessment and thus improving the accuracy of the result regarding whether the power battery is faulty. Furthermore, based on the improved accuracy of the result regarding whether the power battery is faulty, the accuracy of the battery health status is further improved.

[0071] For example, assuming the power battery has no hardware faults and the mileage parameters are valid (i.e., the mileage parameters are true), the throughput of the power battery required for the total mileage traveled by the vehicle is determined based on the power battery's rated capacity and full-charge range, the vehicle's total mileage, and power type (this can be referred to as the "first throughput"). Furthermore, based on the vehicle's total mileage, the additional throughput of the power battery required for the vehicle to travel that total mileage, excluding actual driving, is determined (this can be referred to as the "second throughput"). That is, the first throughput is the throughput of the power battery when the vehicle is driving, and the second throughput is the throughput of the power battery when the vehicle is not driving, such as the throughput of the power battery when the vehicle is parked, the air conditioning is on, and the battery is discharging externally.

[0072] For example, if the total driving range of a vehicle is 5000 km, the first throughput is the throughput of the power battery required for driving 5000 km, and the second throughput is the throughput of the power battery required for driving 5000 km, such as the throughput of the power battery when the vehicle is parked and the air conditioner is turned on.

[0073] For example, when calculating the second throughput, the unit throughput of the power battery excluding driving can be obtained first when the vehicle travels the total driving mileage, and the second throughput can be determined by the unit throughput of the power battery excluding driving when the vehicle travels the total driving mileage and the total driving mileage; specifically, the product of the unit throughput of the power battery excluding driving when the vehicle travels the total driving mileage and the total driving mileage is used as the second throughput, and the total driving mileage of the vehicle is used as the metric for calculating the second throughput.

[0074] It should be noted that the battery throughput per unit volume (excluding driving) when the vehicle has traveled this total mileage can be written into the vehicle's infotainment software to prevent data loss. The vehicle's mileage parameter can include the battery throughput per unit volume (excluding driving) when the vehicle has traveled this total mileage. Specifically, the battery throughput per unit volume (excluding driving) when the vehicle has traveled this total mileage can be the average of the battery throughput per unit volume across multiple trips. For example, if the battery throughput per unit volume is 12 kWh on the first trip and 18 kWh on the second trip, then the average of 12 kWh and 18 kWh, 15 kWh, is determined as the battery throughput per unit volume (excluding driving) when the vehicle has traveled this total mileage.

[0075] For example, in the event of a hardware fault in the power battery and / or an invalid mileage parameter (i.e., a false mileage parameter), a reminder message can be output to the user in the vehicle to alert them to the power battery malfunction and / or the potential deviation in the power battery's State of Health (SOH), prompting the user to have the power battery inspected and repaired promptly. The reminder message can be output in at least one of the following methods: voice reminder, text reminder, image reminder, or light reminder.

[0076] In this embodiment, the power battery throughput is determined only when the power battery is fault-free and the mileage parameters are valid. This avoids the problem of deviations in the determined power battery throughput when the power battery is faulty and / or the mileage parameters are invalid, thus further improving the accuracy of the power battery health status. Furthermore, the determination of the power battery throughput considers both the throughput during vehicle operation and the throughput outside of vehicle operation—that is, the power battery's throughput during driving and its throughput when not driving—providing a more comprehensive assessment and further enhancing the accuracy of the power battery health status.

[0077] Furthermore, the above-mentioned determination of the first throughput of the power battery when the vehicle is in motion based on battery parameters, mileage parameters, and power type includes: determining the total output capacity of the power battery based on mileage parameters and power type; determining the total input capacity of the power battery based on battery parameters, mileage parameters, and power type; and determining the sum of the total output capacity and the total input capacity as the first throughput.

[0078] For example, the total amount of electricity required by the power battery to drive the vehicle when it travels that total mileage is determined by the vehicle's total mileage and power type, i.e., the total output power of the power battery.

[0079] For example, the total amount of power battery input required for the vehicle to travel that total mileage is determined by the rated capacity of the power battery, the full-charge range, and the total driving range of the vehicle.

[0080] In this embodiment of the application, when determining the throughput of the power battery during driving, the output and input power of the power battery during vehicle operation are taken into account, which is more comprehensive and thus further improves the accuracy of the battery health status of the power battery.

[0081] Furthermore, the above-mentioned determination of the total output capacity of the power battery based on the driving mileage parameters and power type includes: determining the pure electric driving mileage and hybrid driving mileage in the total driving mileage based on the power type; determining the first output capacity of the power battery corresponding to the pure electric driving mileage, and determining the second output capacity of the power battery corresponding to the hybrid driving mileage; and determining the sum of the first output capacity and the second output capacity as the total output capacity.

[0082] Optionally, the above determination of the pure electric driving range and hybrid driving range in the total driving range based on the power type includes: determining the total driving range as pure electric driving range when the power type is pure electric; and determining the pure electric driving range and hybrid driving range in the total driving range based on a preset proportion included in the driving range parameters when the power type is hybrid.

[0083] For example, if the vehicle's powertrain is pure electric, it means the vehicle is driven by a drive motor, not an engine, and the power source is the battery. Therefore, it can be determined that the vehicle's total driving range is all pure electric driving range, and there is no hybrid driving range. Pure electric driving range can represent the driving range of the vehicle using only pure electric power.

[0084] The preset percentage represents the proportion of pure electric driving range and hybrid driving range in the total driving range of the vehicle. Specifically, it is the proportion of pure electric driving range, hybrid driving range, and fuel driving range in the total driving range of the vehicle. For example, the proportion of pure electric driving range, hybrid driving range, and fuel driving range in the total driving range of the vehicle is 3:6:1, or 4:6:0. The preset percentage can be obtained through sample statistics, and this application embodiment does not limit it. Fuel driving range can represent the driving range of the vehicle when it only uses fuel.

[0085] For example, in the case of a hybrid vehicle, the total driving range may include pure electric driving range, hybrid driving range, and / or fuel driving range. Furthermore, since the pure electric driving range and hybrid driving range are related to the drive motor, they affect the throughput of the power battery. Therefore, it is necessary to determine the pure electric driving range and hybrid driving range within the total driving range. Specifically, firstly, the proportions corresponding to pure electric driving range and hybrid driving range in the total driving range are determined by preset proportions. Then, using the proportions corresponding to pure electric driving range and the total driving range, the pure electric driving range is determined; specifically, the product of the proportions corresponding to pure electric driving range and the total driving range is determined as the pure electric driving range. Similarly, using the proportions corresponding to hybrid driving range and the total driving range, the hybrid driving range is determined; specifically, the product of the proportions corresponding to hybrid driving range and the total driving range is determined as the hybrid driving range.

[0086] For example, when the vehicle's power type is a parallel hybrid system, the pure electric driving range and hybrid driving range in the total driving range are determined by a first preset ratio. Alternatively, when the vehicle's power type is a series hybrid system, the pure electric driving range and hybrid driving range in the total driving range are determined by a second preset ratio.

[0087] It should be understood that since parallel hybrid vehicles can operate in pure electric, hybrid, or gasoline modes, the first preset ratio represents the proportion of pure electric, hybrid, and gasoline driving mileage in the vehicle's total driving range. For example, the first preset ratio is 3:6:1. Since series hybrid vehicles can operate in pure electric or hybrid modes and generally do not operate in gasoline mode, the second preset ratio represents the proportion of pure electric and hybrid driving mileage in the vehicle's total driving range. In this case, the proportion of gasoline driving mileage is 0. For example, the second preset ratio is 4:6:0. The first and second preset ratios can be obtained through sample statistics, and this application embodiment does not limit this. Furthermore, the preset ratio can be either the first or the second preset ratio, and the first and second preset ratios can be the same or different; this application embodiment does not limit this.

[0088] Assuming the vehicle's total mileage is 5000km and the preset ratio is 3:6:1, then the pure electric mileage accounts for 3 / 10 and the hybrid mileage accounts for 6 / 10. Therefore, the pure electric mileage in the total mileage is calculated to be 5000×3 / 10=1500km, and the hybrid mileage in the total mileage is calculated to be 5000×6 / 10=3000km.

[0089] Assuming the vehicle's total mileage is 5000km and the preset ratio is 4:6:0, then the pure electric mileage accounts for 4 / 10 and the hybrid mileage accounts for 6 / 10. Therefore, the pure electric mileage in the total mileage is calculated to be 5000×4 / 10=2000km, and the hybrid mileage in the total mileage is calculated to be 5000×6 / 10=3000km.

[0090] In this embodiment, the pure electric driving range and hybrid driving range in the total driving range of the vehicle are distinguished by the power type. The pure electric driving range and hybrid driving range may differ depending on the power type, thereby improving the accuracy of the pure electric driving range and hybrid driving range in the total driving range. Furthermore, based on the more accurate pure electric driving range and hybrid driving range in the total driving range of the vehicle, the accuracy of the battery health status of the power battery is further improved.

[0091] For example, when determining the pure electric driving range within the vehicle's total driving range, the unit output power of the power battery during pure electric driving can be obtained, and the cumulative output power of the power battery during pure electric driving (which can be referred to as the "first output power") can be determined by combining the unit output power of the power battery during pure electric driving with the pure electric driving range; specifically, the product of the unit output power of the power battery during pure electric driving and the pure electric driving range is determined as the cumulative output power of the power battery during pure electric driving. Similarly, when determining the hybrid driving range within the vehicle's total driving range, the unit output power of the power battery during hybrid driving can be obtained, and the cumulative output power of the power battery during hybrid driving can be determined by combining the unit output power of the power battery during hybrid driving and the hybrid driving range (which can be referred to as the "second output power"); specifically, the product of the unit output power of the power battery during hybrid driving and the hybrid driving range is determined as the cumulative output power of the power battery during hybrid driving.

[0092] Optionally, when the total driving range of the vehicle is all pure electric driving range, the product of the unit output capacity of the power battery during pure electric driving and the total driving range can be determined as the first output capacity. In this case, since there is no hybrid driving range, the second output capacity can be determined to be 0. The total output capacity of the power battery = first output capacity + 0.

[0093] Optionally, when the total driving range of the vehicle is all hybrid driving range, the product of the unit output capacity of the power battery during hybrid driving and the total driving range can be determined as the second output capacity. In this case, since there is no pure electric driving range, the first output capacity can be determined to be 0. The total output capacity of the power battery = second output capacity + 0.

[0094] Optionally, when the total driving range of the vehicle includes both pure electric driving range and hybrid driving range, the product of the unit output capacity of the power battery during pure electric driving and the pure electric driving range in the total driving range can be determined as the first output capacity, and the product of the unit output capacity of the power battery during hybrid driving and the hybrid driving range in the total driving range can be determined as the second output capacity. The total output capacity of the power battery = first output capacity + second output capacity.

[0095] It should be noted that the preset percentage, first preset percentage, second preset percentage, unit output capacity of the power battery when the vehicle is driving purely electric, and unit output capacity of the power battery when the vehicle is driving in hybrid mode can be programmed into the vehicle's infotainment software to prevent malfunctions. The vehicle's mileage parameters can include the preset percentage, first preset percentage, second preset percentage, unit output capacity of the power battery when the vehicle is driving purely electric, and unit output capacity of the power battery when the vehicle is driving in hybrid mode. Specifically, the unit output capacity of the power battery when the vehicle is driving purely electric can be the average of the unit output capacity of the power battery during multiple pure electric driving cycles. For example, if the vehicle has two pure electric driving cycles, and the unit output capacity of the power battery is 10 kWh during the first cycle and 12 kWh during the second cycle, then the average of 10 kWh and 12 kWh, 11 kWh, is determined as the unit output capacity of the power battery when the vehicle is driving purely electric. When a vehicle is driving in a hybrid mode, the unit output capacity of the power battery can be the average of the unit output capacity of the power battery during multiple hybrid driving cycles. For example, if the power battery has a unit output capacity of 8 kWh during the first hybrid driving cycle and 10 kWh during the second hybrid driving cycle, then the average of 8 kWh and 10 kWh, which is 9 kWh, is determined as the unit output capacity of the power battery during hybrid driving.

[0096] In this embodiment, the pure electric driving range and hybrid driving range in the total driving range of the vehicle are distinguished by the power type. The output power of the power battery under the pure electric driving range and the output power of the power battery under the hybrid driving range are determined respectively. This is a more comprehensive approach, thereby further improving the accuracy of the battery health status of the power battery.

[0097] In one implementation, determining the total input capacity of the power battery based on battery parameters, driving range parameters, and power type includes: determining the number of cycles of the power battery based on the total driving range and the full-charge range when the power type is pure electric; determining the number of cycles of the power battery based on the pure electric driving range, hybrid driving range, and full-charge range in the total driving range when the power type is hybrid; and determining the total input capacity by multiplying the number of cycles by the rated capacity.

[0098] For example, when a vehicle's power type is pure electric, the total driving range is all pure electric driving range, and the vehicle's power comes solely from the battery. To determine the input power required by the battery for the vehicle to travel its pure electric driving range, the ratio of the pure electric driving range to the fully charged range can be defined as the battery's cycle count (also known as "charging cycle count" or "equivalent cycle count"). This is because the vehicle's operation is powered by the battery, and the ratio of the total driving range to the fully charged range determines how many times the battery needs to be charged to meet the power requirements for the vehicle's total driving range. Multiplying this cycle count by the battery's rated capacity gives the total charging power required by the battery for the total driving range (i.e., the total input power). The battery cycle count represents the number of complete charge-discharge cycles from fully charged to completely discharged and back to fully charged.

[0099] For example, when the vehicle's power type is hybrid, the number of cycles of the power battery is determined by the pure electric driving range, the driving range driven by the drive motor in the hybrid driving range, and the full charge range in the total driving range of the vehicle.

[0100] Specifically, when the vehicle's power type is hybrid, the pure electric driving range and hybrid driving range within the vehicle's total driving range are first determined. The ratio of the pure electric driving range to the fully charged range (referred to as the "first ratio") is then calculated. Next, using a preset ratio, the driving range using the drive motor within the hybrid driving range is determined, and the ratio of this driving range to the fully charged range is calculated (referred to as the "second ratio"). This is because the driving range using the drive motor is powered by the battery, and by using the ratio of this ratio, it's possible to determine how many times the battery needs to be charged to provide the necessary power for the driving range using the drive motor. The sum of the first and second ratios is determined as the battery cycle count. Alternatively, the ratio of the sum of the pure electric driving range and the hybrid driving range using the drive motor to the fully charged range is also determined as the battery cycle count.

[0101] The preset ratio represents the allocation ratio of the vehicle's driving range using the engine to the hybrid driving range using the electric motor. For example, the allocation ratio of the hybrid driving range using the engine to the hybrid driving range using the electric motor is 3:7 or 2:8. The preset ratio can be obtained through sample statistics, and this application embodiment does not limit this. The preset ratio can be written into the vehicle's infotainment software to avoid failure. The vehicle's driving range parameters may include the preset ratio.

[0102] For example, when the vehicle's power type is hybrid, the proportion of the hybrid driving range driven by the engine and the proportion of the hybrid driving range driven by the electric motor are first determined by a preset ratio. Then, the engine-driven driving range is determined by using the proportion of engine-driven driving range and the hybrid driving range; specifically, the product of the proportion of engine-driven driving range and the hybrid driving range is determined as the engine-driven driving range. Similarly, the electric motor-driven driving range is determined by using the proportion of electric motor-driven driving range and the hybrid driving range; specifically, the product of the proportion of electric motor-driven driving range and the hybrid driving range is determined as the electric motor-driven driving range.

[0103] Assuming the vehicle's hybrid driving range is 2000km and the preset ratio is 2:8, then the proportion of driving range using the engine is 2 / 10, and the proportion of driving range using the drive motor is 8 / 10. Therefore, the hybrid driving range using the engine is calculated to be 2000 × 2 / 10 = 400km, and the hybrid driving range using the drive motor is calculated to be 2000 × 8 / 10 = 1600km.

[0104] In this embodiment, the cycle count of the power battery corresponding to the power type is determined by the power type, making the determined cycle count of the power battery more accurate. Furthermore, based on the more accurate cycle count of the power battery, the accuracy of the battery health status is further improved.

[0105] Optionally, when the vehicle's power type is pure electric, the target throughput of the power battery (which may be referred to as "alternative cumulative throughput") can be illustrated by formula (1).

[0106]

[0107] In formula (1), ET1 represents the target throughput of the power battery when the vehicle's power type is pure electric power, S represents the total driving range of the vehicle, α represents the unit output power of the power battery when the vehicle is driving in pure electric mode, L represents the full-charge range of the power battery, RC represents the rated power of the power battery, and β represents the unit throughput of the power battery excluding driving when the vehicle travels the total driving range.

[0108] Optionally, when the vehicle's power type is a parallel hybrid, the target throughput of the power battery can be illustrated by formula (2).

[0109]

[0110] In formula (2), ET2 represents the target throughput of the power battery when the vehicle's power type is parallel hybrid, S represents the total driving range of the vehicle, α represents the unit output power of the power battery when the vehicle is driving in pure electric mode, L represents the full-charge range of the power battery, RC represents the rated capacity of the power battery, β represents the unit throughput of the power battery when the vehicle travels the total driving range excluding driving, γ represents the proportion of pure electric driving range in the total driving range of the vehicle, δ represents the unit output power of the power battery when the vehicle is driving in hybrid mode, and ε represents the proportion of hybrid driving range in the total driving range of the vehicle. The percentage of mileage driven by the drive motor.

[0111] Optionally, γ is less than or equal to ε, such that the throughput of the power battery in the hybrid driving range of the vehicle's total driving range is less than or equal to the throughput of the power battery in the pure electric driving range, in order to avoid the final target throughput being too high and to improve the accuracy of the target throughput.

[0112] Optionally, when the vehicle's power type is a series hybrid, the target throughput of the power battery can be illustrated by formula (3).

[0113]

[0114] In formula (3), ET3 represents the target throughput of the power battery when the vehicle's power type is series hybrid, S represents the total driving range of the vehicle, δ represents the unit throughput of the power battery when the vehicle is driving in hybrid mode, and η represents the unit throughput of the power battery other than driving when the vehicle travels the total driving range. Alternatively, ET3 = S × δ, ignoring the throughput of the power battery that is not driving during the total driving range, because the throughput of the power battery that is not driving in a series hybrid vehicle is extremely small and can be ignored, and has basically no impact on the SOH of the power battery.

[0115] In summary, this method determines the battery health status not by relying on stored battery health information within the vehicle, but by using battery parameters, vehicle mileage parameters, and power type. This comprehensive approach considers the influence of three dimensions—battery size, vehicle mileage, and power type—resulting in a more accurate and reliable assessment of battery health. Consequently, controlling battery operation based on a more accurate battery health status is more precise and safer.

[0116] It should be understood that the above examples are provided to help those skilled in the art understand the embodiments of this application, and are not intended to limit the embodiments of this application to the specific values ​​or scenarios exemplified. Those skilled in the art can obviously make various equivalent modifications or variations based on the above examples, and such modifications or variations also fall within the scope of the embodiments of this application.

[0117] The above text combined Figures 1 to 2 The control method for a vehicle battery provided in the embodiments of this application is described in detail below; the following will be combined with Figure 3 and Figure 5 The apparatus embodiments of this application are described in detail below. It should be understood that the apparatus in the embodiments of this application can perform the various methods described in the foregoing embodiments of this application, that is, the specific working processes of the various products described below can be referred to the corresponding processes in the foregoing method embodiments.

[0118] Figure 3 This is a schematic diagram of the structure of the vehicle battery control device provided in the embodiments of this application.

[0119] For example, such as Figure 3 As shown, the device 300 includes: The acquisition module 310 is used to acquire the battery parameters of the power battery in the vehicle, the vehicle's driving range parameters, and the power type. The processing module 320 is used to determine the battery health status of the power battery based on battery parameters, driving range parameters and power type; and to control the operation of the power battery based on the battery health status.

[0120] In one possible implementation, the processing module 320 is specifically used for: Based on battery parameters, driving range parameters, and power type, the target throughput of the power battery is determined, where the target throughput represents the total amount of electricity transferred by the power battery. Determine the battery health status based on the target throughput.

[0121] In one possible implementation, the processing module 320 is specifically used for: Based on battery parameters, determine whether the power battery is faulty; Under the condition that the power battery is fault-free and the driving range parameters are valid, the first throughput of the power battery when the vehicle is in motion is determined based on the battery parameters, driving range parameters and power type. Based on the driving range parameters, determine the second throughput of the power battery outside of vehicle driving. The sum of the first throughput and the second throughput is determined as the target throughput.

[0122] In one possible implementation, the processing module 320 is specifically used for: The total output capacity of the power battery is determined based on the driving range parameters and power type. Based on battery parameters, driving range parameters, and power type, determine the total input capacity of the power battery; The sum of the total output power and the total input power is determined as the first throughput.

[0123] In one possible implementation, the processing module 320 is specifically used for: Based on the power type, determine the pure electric driving range and hybrid driving range in the total driving range; Determine the first output capacity of the power battery corresponding to the pure electric driving range, and determine the second output capacity of the power battery corresponding to the hybrid driving range; The sum of the first output power and the second output power is determined as the total output power.

[0124] In one possible implementation, the processing module 320 is specifically used for: When the power type is pure electric, the total driving range is determined as the pure electric driving range; When the power type is hybrid, the pure electric driving range and hybrid driving range in the total driving range are determined based on the preset proportions included in the driving range parameters. The preset proportions represent the allocation ratio of pure electric driving range and hybrid driving range in the total driving range.

[0125] In one possible implementation, the processing module 320 is specifically used for: When the power type is pure electric, the number of cycles of the power battery is determined based on the total driving range and the range on a full charge. When the power type is hybrid, the number of cycles of the power battery is determined based on the pure electric driving range, hybrid driving range and full charge range in the total driving range; The total input power is determined by multiplying the number of cycles by the rated power.

[0126] In one possible implementation, the processing module 320 is specifically used for: If the current state, voltage state, and temperature state are all detected to be valid, it is determined that the power battery is fault-free. If the current status, voltage status, and / or temperature status are all invalid, it is determined that the power battery is faulty.

[0127] In one possible implementation, the processing module 320 is further used for: Determine the difference between the target throughput and the third throughput, where the third throughput represents the throughput of the power battery stored in the vehicle; If the difference is greater than or equal to the first preset threshold and the third throughput is less than or equal to the second preset threshold, the battery health status is determined based on the target throughput, wherein the first preset threshold is greater than the second preset threshold.

[0128] It should be noted that the aforementioned device 300 is embodied in the form of a functional module. The term "module" here can be implemented in software and / or hardware, without specific limitations.

[0129] For example, a "module" can be a software program, hardware circuit, or a combination of both that implements the above functions. Hardware circuits may include application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or combined processors) and memory for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functions.

[0130] Therefore, the modules of the various examples described in the embodiments of this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0131] Figure 4 This is a schematic diagram of the controller provided in the embodiments of this application.

[0132] For example, such as Figure 4 As shown, the vehicle includes a controller 400, which includes a storage module 410 and a processing module 420. The storage module 410 stores executable program code 4101, and the processing module 420 is used to call and execute the executable program code 4101 to perform a vehicle battery control method.

[0133] Figure 5 This is a schematic diagram of the vehicle structure provided in the embodiments of this application.

[0134] For example, such as Figure 5 As shown, the vehicle 500 includes a memory 510 and a processor 520. The memory 510 stores executable program code 5101, and the processor 520 is used to call and execute the executable program code 5101 to perform a vehicle battery control method.

[0135] This application can divide the vehicle into functional modules based on the above method example. For example, each module can correspond to a separate function module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0136] When each functional module is divided according to its corresponding function, the vehicle may include: an acquisition module and a processing module, etc. It should be noted that all relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0137] The vehicle provided in this application is used to execute the above-described vehicle battery control method, and thus can achieve the same effect as the above-described implementation method.

[0138] When using integrated units, the vehicle may include a processing module and a storage module. The processing module is used to control and manage the vehicle's movements. The storage module is used to support the vehicle in executing relevant program code and data.

[0139] The processing module may be a processor or a controller, which can implement or execute various exemplary logic blocks, modules, and circuits shown in conjunction with the disclosure of this application. The processor may also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and microprocessors, etc., and the storage module may be a memory.

[0140] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described in the foregoing embodiments. The computer-readable storage medium may include, but is not limited to, any type of disk, including floppy disks, optical disks, DVDs (Digital Video Discs), CD-ROMs (Compact Disc Read-Only Memory), microdrives, magneto-optical disks, ROMs (Read-Only Memory), RAMs (Random Access Memory), EPROMs (Erasable Programmable Read-Only Memory), EEPROMs (Electrically Erasable Programmable Read Only Memory), DRAMs (Dynamic Random Access Memory), VRAMs (Video Random Access Memory), flash memory devices, magnetic cards or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0141] This application also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned related steps to implement a vehicle battery control method as described in the above embodiments.

[0142] In addition, the vehicle provided in the embodiments of this application may specifically be a chip, component or module. The vehicle may include a connected processor and a memory. The memory is used to store instructions. When the vehicle is running, the processor may call and execute the instructions to make the chip execute a vehicle battery control method in the above embodiments.

[0143] The vehicle, computer-readable storage medium, computer program product or chip provided in this application are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0144] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0145] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or 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 device, 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; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0146] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for controlling a vehicle battery, characterized in that, The method includes: Obtain the battery parameters of the power battery in the vehicle, the vehicle's driving range parameters, and the power type; Based on the battery parameters, the driving range parameters, and the power type, determine the battery health status of the power battery; The operation of the power battery is controlled based on the battery's health status.

2. The method according to claim 1, characterized in that, Determining the battery health status of the power battery based on the battery parameters, the driving range parameters, and the power type includes: Based on the battery parameters, the driving range parameters, and the power type, the target throughput of the power battery is determined, wherein the target throughput represents the total amount of electricity transmitted by the power battery; The battery health status is determined based on the target throughput.

3. The method according to claim 2, characterized in that, Determining the target throughput of the power battery based on the battery parameters, the driving range parameters, and the power type includes: Based on the battery parameters, determine whether the power battery has a fault; If the power battery is fault-free and the driving range parameter is valid, the first throughput of the power battery when the vehicle is in motion is determined based on the battery parameter, the driving range parameter and the power type. Based on the driving mileage parameters, determine the second throughput of the power battery outside of the vehicle's driving range; The sum of the first throughput and the second throughput is determined as the target throughput.

4. The method according to claim 3, characterized in that, The step of determining the first throughput of the power battery when the vehicle is in motion, based on the battery parameters, the driving range parameters, and the power type, includes: Based on the driving mileage parameters and the power type, the total output capacity of the power battery is determined; Based on the battery parameters, the driving range parameters, and the power type, the total input capacity of the power battery is determined; The sum of the total output power and the total input power is determined as the first throughput.

5. The method according to claim 4, characterized in that, The mileage parameter includes the total mileage of the vehicle. Determining the total output capacity of the power battery based on the mileage parameter and the power type includes: Based on the power type, determine the pure electric driving range and the hybrid driving range in the total driving range; Determine the first output capacity of the power battery corresponding to the pure electric driving range, and determine the second output capacity of the power battery corresponding to the hybrid driving range; The sum of the first output power and the second output power is determined as the total output power.

6. The method according to claim 5, characterized in that, The determination of the pure electric driving range and hybrid driving range in the total driving range based on the power type includes: When the power type is pure electric, the total driving range is determined to be the pure electric driving range; When the power type is hybrid, the pure electric driving range and the hybrid driving range in the total driving range are determined based on the preset proportion included in the driving range parameters, wherein the preset proportion represents the allocation ratio of the pure electric driving range and the hybrid driving range in the total driving range.

7. The method according to claim 4, characterized in that, The driving range parameter includes the total driving range of the vehicle, and the battery parameter includes the rated capacity and full-charge range of the power battery. Determining the total input capacity of the power battery based on the battery parameter, the driving range parameter, and the power type includes: When the power type is pure electric, the number of cycles of the power battery is determined based on the total driving mileage and the full charge range; When the power type is hybrid, the number of cycles of the power battery is determined based on the pure electric driving range, hybrid driving range and full charge range in the total driving range; The total input power is determined by multiplying the number of cycles by the rated power.

8. The method according to any one of claims 3 to 7, characterized in that, The battery parameters also include the current state, voltage state, and temperature state of the power battery. Determining whether the power battery is faulty based on these battery parameters includes: If the current state, the voltage state, and the temperature state are all detected to be valid, it is determined that the power battery is fault-free. If the current state is found to be invalid, the voltage state is found to be invalid, and / or the temperature state is found to be invalid, it is determined that the power battery is faulty.

9. The method according to any one of claims 2 to 7, characterized in that, Before determining the battery health status based on the target throughput, the method further includes: Determine the difference between the target throughput and the third throughput, wherein the third throughput represents the throughput of the power battery stored in the vehicle; If the difference is greater than or equal to a first preset threshold and the third throughput is less than or equal to a second preset threshold, the battery health status is determined based on the target throughput, wherein the first preset threshold is greater than the second preset threshold.

10. A vehicle, characterized in that, The vehicles include: Memory, used to store executable program code; A processor for calling and running the executable program code from the memory, causing the vehicle to perform the method as described in any one of claims 1 to 9.

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