Charging method of vehicle and vehicle

Abstract

The invention discloses a vehicle charging method and a vehicle, and belongs to the technical field of vehicles. By adopting the technical scheme provided by the embodiment of the invention, under the condition that the hybrid vehicle is in the running state, the required power of the hybrid vehicle is obtained, so that the sum of the power provided by the engine and the power provided by the motor is determined. Target charging parameters for controlling the engine and motor are determined based on the demand power, engine parameters, and power battery parameters, or based on power battery parameters. And controlling the engine and the motor of the hybrid vehicle based on the target charging parameter and the required power, so as to slow down the capacity attenuation of the power battery on the premise of meeting the required power, prolong the service life of the power battery as much as possible, and improve the user experience.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more particularly, to a vehicle charging method and a vehicle in the field of vehicle technology. Background Art

[0002] With the development of vehicle technology, more and more vehicles will use at least two power sources to drive the vehicle. For example, hybrid vehicles equipped with both an engine and an electric motor are becoming increasingly popular among users due to their economy and power smoothness.

[0003] In related technologies, hybrid vehicles have smaller power batteries and cycle more quickly than pure electric vehicles, resulting in a faster reduction in their battery life. However, for short-distance commuting, users often configure their hybrid vehicles to pure electric mode, essentially driving them as pure electric vehicles. This rapid reduction in battery life requires users to charge their hybrid vehicles more frequently, resulting in a poor user experience.

[0004] Therefore, how to extend the service life of hybrid vehicle power batteries is a research hotspot. Summary of the Invention

[0005] The embodiments of the present application provide a vehicle charging method and a vehicle, which can extend the service life of the power battery of a hybrid vehicle. The technical solution is as follows:

[0006] In one aspect, a method for charging a vehicle is provided, the method comprising:

[0007] When a power battery of the vehicle is in a charging state, obtaining a charging parameter set corresponding to a charging mode of the power battery, or obtaining power battery parameters of the power battery, where the vehicle is a hybrid vehicle;

[0008] determining a target charging parameter of the power battery based on the charging parameter set, or determining a target charging parameter of the power battery based on a power battery parameter of the power battery, wherein the target charging parameter is a charging parameter for extending the service life of the power battery of the vehicle;

[0009] The power battery is charged based on the target charging parameter.

[0010] In a possible implementation, when the power battery of the vehicle is in a charging state, obtaining a charging parameter set corresponding to a charging mode of the power battery includes:

[0011] When the power battery of the vehicle is in a charging state, obtaining engine operating parameters or charging port parameters of the vehicle;

[0012] Determining a charging method for the power battery based on the engine operating parameters or charging port parameters;

[0013] Obtain a charging parameter set corresponding to the charging mode.

[0014] In one possible implementation, determining the charging mode of the power battery based on the engine operating parameters or charging port parameters includes:

[0015] When the engine operating parameter indicates that the engine of the vehicle is in an operating state, or when the charging port parameter indicates that the vehicle is not connected to a charging pile, determining the charging mode of the power battery to be internal charging;

[0016] When the engine operating parameter indicates that the engine of the vehicle is not in an operating state, or when the charging port parameter indicates that the vehicle is connected to a charging pile, the charging mode of the power battery is determined to be external charging.

[0017] In a possible implementation, obtaining a charging parameter set corresponding to the charging mode includes:

[0018] When the charging mode is internal charging, obtaining the current engine charging power of the vehicle engine and the optimal charging power range of the power battery, where the optimal charging power range is the charging power range with the longest service life of the power battery;

[0019] When the charging mode is external charging, obtaining the maximum charging power of the charging pile and the optimal charging power range;

[0020] The charging parameter set includes one of the current engine charging power and the maximum charging power and the optimal charging power range.

[0021] In a possible implementation, determining the target charging parameter of the power battery based on the charging parameter set includes:

[0022] When the charging parameter set includes the current engine charging power of the vehicle and the optimal charging power range of the power battery, the smaller of the current engine charging power and an upper limit of the optimal charging power range is determined as the target charging parameter, and the optimal charging power range is the charging power range that maximizes the service life of the power battery.

[0023] When the charging parameter set includes the maximum charging power of the charging pile and the optimal charging power range of the power battery, the smaller of the maximum charging power and the upper limit of the optimal charging power range is determined as the target charging parameter.

[0024] In a possible implementation, the power battery parameters include battery temperature and battery charging current, and the method further includes:

[0025] When the battery temperature is not within the optimal battery temperature range, adjusting the determined target charging parameter to a first charging parameter, where the first charging parameter is used to adjust the charging power of the power battery to a preset value;

[0026] Alternatively, when the battery charging current is greater than or equal to a preset charging current, the determined target charging parameter is adjusted to a second charging parameter, wherein the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current, and the preset charging current is associated with the battery temperature.

[0027] In a possible implementation, the power battery parameter includes a battery temperature, a battery charging current, or a battery charging power, and determining a target charging parameter of the power battery based on the power battery parameter includes:

[0028] If the battery temperature is not within the optimal battery temperature range, determining the target charging parameter as a first charging parameter, wherein the optimal battery temperature range is a battery temperature range in which the service life of the power battery is longest, and the first charging parameter is used to adjust the charging power of the power battery to a preset value;

[0029] Alternatively, when the battery charging current is greater than or equal to a preset charging current, the target charging parameter is determined as a second charging parameter, the preset charging current is associated with the battery temperature, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current.

[0030] In one possible implementation, the method further includes:

[0031] When the battery temperature is not within the optimal battery temperature range, a temperature control instruction is sent to the thermal management system of the power battery, wherein the temperature control instruction is used to instruct the thermal management system to adjust the battery temperature of the power battery to the optimal battery temperature range.

[0032] In one possible implementation, the power battery parameters include battery temperature, current SOC, and cycle characteristics, and the method for determining the optimal charging power range includes:

[0033] Obtaining the ambient temperature of the environment in which the vehicle is located;

[0034] determining a first charging power and a second charging power based on the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature, the first charging power being less than the second charging power;

[0035] The first charging power is used as the lower limit of the interval, and the second charging power is used as the upper limit of the interval to obtain the optimal charging power interval.

[0036] In one aspect, a vehicle charging device is provided, the device comprising:

[0037] an acquisition module, configured to, when a power battery of a vehicle is in a charging state, acquire a charging parameter set corresponding to a charging mode of the power battery, or acquire power battery parameters of the power battery, where the vehicle is a hybrid vehicle;

[0038] a target charging parameter determination module, configured to determine a target charging parameter of the power battery based on the charging parameter set, or to determine a target charging parameter of the power battery based on a power battery parameter of the power battery, wherein the target charging parameter is a charging parameter for extending the service life of the power battery of the vehicle;

[0039] A charging module is used to charge the power battery based on the target charging parameters.

[0040] In one possible embodiment, the acquisition module is used to obtain the engine operating parameters or charging port parameters of the vehicle when the vehicle's power battery is in a charging state; determine the charging method of the power battery based on the engine operating parameters or charging port parameters; and obtain a charging parameter set corresponding to the charging method.

[0041] In one possible implementation, the acquisition module is configured to determine the charging mode of the power battery as internal charging when the engine operating parameters indicate that the engine of the vehicle is in working condition, or when the charging port parameters indicate that the vehicle is not connected to a charging pile; and to determine the charging mode of the power battery as external charging when the engine operating parameters indicate that the engine of the vehicle is not in working condition, or when the charging port parameters indicate that the vehicle is connected to a charging pile.

[0042] In one possible embodiment, the acquisition module is used to obtain the current engine charging power of the vehicle's engine and the optimal charging power range of the power battery when the charging method is internal charging, and the optimal charging power range is the charging power range with the longest service life of the power battery; when the charging method is external charging, the maximum charging power of the charging pile and the optimal charging power range are obtained; wherein the charging parameter set includes one of the current engine charging power and the maximum charging power and the optimal charging power range.

[0043] In one possible embodiment, the target charging parameter determination module is used to determine the smaller of the current engine charging power and the upper limit of the optimal charging power range as the target charging parameter when the charging parameter set includes the current engine charging power of the vehicle and the optimal charging power range of the power battery, and the optimal charging power range is the charging power range with the longest service life of the power battery; when the charging parameter set includes the maximum charging power of the charging pile and the optimal charging power range of the power battery, the smaller of the maximum charging power and the upper limit of the optimal charging power range is determined as the target charging parameter.

[0044] In one possible embodiment, the power battery parameters include battery temperature and battery charging current. The target charging parameter determination module is further used to, when the battery temperature is not within the optimal battery temperature range, adjust the determined target charging parameter to a first charging parameter, where the first charging parameter is used to adjust the charging power of the power battery to a preset value; or, when the battery charging current is greater than or equal to a preset charging current, adjust the determined target charging parameter to a second charging parameter, where the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current, where the preset charging current is associated with the battery temperature.

[0045] In one possible embodiment, the power battery parameter includes a battery temperature, a battery charging current, or a battery charging power. The target charging parameter determination module is configured to, when the battery temperature is not within an optimal battery temperature range, determine the target charging parameter as a first charging parameter, where the optimal battery temperature range is the battery temperature range with the longest service life of the power battery. The first charging parameter is used to adjust the charging power of the power battery to a preset value; or, when the battery charging current is greater than or equal to a preset charging current, determine the target charging parameter as a second charging parameter, where the preset charging current is associated with the battery temperature, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current.

[0046] In a possible embodiment, the device further includes a temperature control module for sending a temperature control instruction to the thermal management system of the power battery when the battery temperature is not within the optimal battery temperature range, wherein the temperature control instruction is used to instruct the thermal management system to adjust the battery temperature of the power battery to the optimal battery temperature range.

[0047] In one possible implementation, the power battery parameters include battery temperature, current SOC, and cycle characteristics, and the method for determining the optimal charging power range includes:

[0048] Obtaining the ambient temperature of the environment in which the vehicle is located;

[0049] determining a first charging power and a second charging power based on the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature, the first charging power being less than the second charging power;

[0050] The first charging power is used as the lower limit of the interval, and the second charging power is used as the upper limit of the interval to obtain the optimal charging power interval.

[0051] On the one hand, a vehicle is provided, comprising one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the program code is loaded and executed by the one or more processors to implement the operations performed by the charging method of the vehicle.

[0052] On the one hand, a computer-readable storage medium is provided, in which at least one program code is stored. The program code is loaded and executed by a processor to implement the operations performed by the vehicle charging method.

[0053] Using the technical solutions provided in the embodiments of this application, while a hybrid vehicle is in a charging state, a charging parameter set corresponding to the power battery's charging method or power battery parameters are obtained. Based on the obtained charging parameter set or power battery parameters, target charging parameters are determined. These target charging parameters match the charging parameter set or power battery parameters and are used to extend the service life of the power battery. Charging the power battery using these target charging parameters can slow down the capacity decay of the power battery, maximize the service life of the power battery, and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a schematic diagram of an implementation environment of a vehicle charging method provided in an embodiment of the present application;

[0055] Figure 2 This is a flow chart of a vehicle charging method provided in an embodiment of the present application;

[0056] Figure 3 is a flow chart of another vehicle charging method provided in an embodiment of the present application;

[0057] Figure 4 This is a flow chart of another vehicle charging method provided in an embodiment of the present application;

[0058] Figure 5 This is a schematic structural diagram of a vehicle charging device provided in an embodiment of the present application;

[0059] Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The following will clearly and thoroughly describe the technical solutions in this application in conjunction with the accompanying drawings. In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more than two.

[0061] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features reflected. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features.

[0062] Hybrid vehicles: Hybrid vehicles are vehicles that use two or more power sources to drive the vehicle. Common classifications are as follows:

[0063] 1. Hybrid Electric Vehicle (HEV): Usually uses a traditional internal combustion engine (diesel or gasoline engine) and an electric motor as the power source. Some engines are modified to use other alternative fuels, such as compressed natural gas, propane and ethanol fuel.

[0064] 2. Plug-in Hybrid Electric Vehicle (PHEV): A plug-in hybrid electric vehicle (PHEV) uses a combination of fuel and plug-in electricity to propel the vehicle. The combined operation of the engine and electric motor can be switched according to different driving conditions, effectively increasing their utilization, significantly boosting vehicle power, and reducing energy consumption.

[0065] 3. Extended-Range Electric Vehicle (EREV): Utilizes a reversible transmission between the engine and electric motor and battery energy to allow the vehicle to be driven by the internal combustion engine like a normal car when needed while the battery is charging and extending the range.

[0066] 4. Mild hybrid vehicles: Generally use pure electric power to start, without much vibration and noise; when accelerating, the motor can provide additional propulsion energy, thereby reducing the burden on the engine and achieving the purpose of fuel saving; when braking, the mild hybrid power system will also recover excess energy to charge its own battery, further achieving energy conservation and emission reduction.

[0067] Demand power: The power required from the vehicle. Generally speaking, this refers to the sum of the power required from the vehicle's engine and electric motor. The demand power is usually determined based on user operation. For example, if a user presses the accelerator pedal deeply, indicating that the user wants the vehicle to accelerate, the demand power is relatively high.

[0068] Engine economic power range: the power range corresponding to the area with good engine fuel economy in the universal characteristic diagram.

[0069] Universal characteristic diagram: The universal characteristic diagram uses the speed as the horizontal axis and the torque or mean effective pressure as the vertical axis. Many equal fuel consumption rate curves and equal power curves are drawn on the diagram to form the universal characteristics of the engine.

[0070] Optimal charging power range for power batteries: High-power charging of power batteries will cause the service life of the power batteries to decrease rapidly. The optimal charging power range includes multiple charging powers, and the power battery can obtain a longer service life by charging at these multiple charging powers.

[0071] In related art, when a hybrid vehicle's power battery is charging, the highest possible charging power is typically used to replenish energy as quickly as possible. However, charging the power battery at high power causes the battery to heat up rapidly. This increased temperature accelerates the decomposition of the power battery's electrolyte and the corrosion of the positive and negative electrode materials, leading to a rapid reduction in the power battery's service life and a rapid decrease in its capacity.

[0072] By adopting the embodiments of the present application, the life of the power battery can be increased by limiting the charging power of the power battery, thereby slowing down the capacity attenuation of the power battery and improving the user experience.

[0073] The following describes the implementation environment of the embodiment of the present application. Figure 1 The implementation environment of the vehicle charging method provided in the embodiment of the present application includes an on-board terminal 101, a hybrid controller 102, and a battery management system 103.

[0074] The vehicle-mounted terminal 101 is a terminal installed on the vehicle and is used to obtain vehicle-related data and process the obtained data to form control instructions. These control instructions are used to control the hybrid controller 102 or the battery management system 103 to control the charging power of the power battery. The vehicle-mounted terminal 101 is electrically connected to the hybrid controller 102 and the battery management system 103, and data can be exchanged between the vehicle-mounted terminal 101, the hybrid controller 102 and the battery management system 103.

[0075] The hybrid controller 102 is used to control the engine and electric motor. In this embodiment of the present application, the hybrid controller 102 can control the output power of the engine and the output power of the electric motor, thereby indirectly controlling the output power of the power battery. The battery management system 103 is used to collect parameters related to the power battery and manage the status of the power battery.

[0076] After introducing the implementation environment of the embodiments of this application, the following describes the application scenarios of the technical solutions provided by the embodiments of this application. The technical solutions provided by the embodiments of this application can be applied to hybrid vehicles, which can be any of the above-mentioned hybrid electric vehicles, plug-in hybrid electric vehicles, extended-range hybrid electric vehicles, and mild hybrid electric vehicles. Of course, with the development of science and technology, other types of hybrid vehicles may also appear, and the technical solutions provided by the embodiments of this application are also applicable to other types of hybrid vehicles.

[0077] By adopting the technical solutions provided in the embodiments of this application, it is possible to combine the charging parameter set corresponding to the vehicle's power battery charging method, or to use the power battery parameters to determine target charging parameters. The target charging parameters are charging parameters used to extend the service life of the power battery. Charging the power battery using the target charging parameters can slow down the capacity decay of the power battery and extend the service life of the power battery.

[0078] After introducing the implementation environment and application scenarios of the embodiments of the present application, the technical solutions provided by the embodiments of the present application are introduced below. Figure 2 Taking the execution subject as a vehicle-mounted terminal as an example, the method includes the following steps.

[0079] 201. When the power battery of the vehicle is in a charging state, the vehicle-mounted terminal obtains a charging parameter set corresponding to the charging method of the power battery, or obtains power battery parameters of the power battery, and the vehicle is a hybrid vehicle.

[0080] Among them, in the embodiment of the present application, when the power battery is in a charging state, the vehicle may be in a driving state or in a power-off state. Accordingly, the driving state and the power-off state of the vehicle correspond to different charging methods respectively. The charging methods of the power battery include internal charging and external charging. Internal charging refers to charging the power battery by the vehicle's engine, and external charging refers to charging the power battery by a charging pile. When the vehicle is in a driving state, the charging method of the power battery is internal charging; when the vehicle is in a power-off state, the charging method of the power battery is external charging. The charging parameter set includes multiple parameters related to power battery charging, and the types of parameters in the charging parameter set are different under different charging methods. The power battery parameters are used to represent the battery status and battery properties of the power battery. The battery status is used to describe the working state of the power battery. For example, the battery temperature, battery charging current and battery charging power belong to the battery status; the battery properties are closely related to the electrode type and electrolyte type of the power battery. For example, the optimal charging power range of the power battery belongs to the battery properties.

[0081] 202. The vehicle-mounted terminal determines the target charging parameters of the power battery based on the charging parameter set, or determines the target charging parameters of the power battery based on the power battery parameters of the power battery, where the target charging parameters are charging parameters used to extend the service life of the power battery of the vehicle.

[0082] The target charging parameter is a parameter used to charge the power battery. For example, the target charging parameter can be charging power or charging current, which is not limited in the embodiments of the present application. Extending the service life of the vehicle's power battery does not mean increasing the service life based on the original service life of the power battery, but rather maximizing the service life of the power battery to be as close as possible to the theoretical maximum service life of the power battery. In other words, extending the service life means that after adopting the technical solution provided in the embodiments of the present application, the service life of the power battery is longer than before adopting the technical solution provided in the embodiments of the present application.

[0083] 203. The vehicle-mounted terminal charges the power battery based on the target charging parameter.

[0084] Using the technical solutions provided in the embodiments of this application, while a hybrid vehicle is in a charging state, a charging parameter set corresponding to the power battery's charging method or power battery parameters are obtained. Based on the obtained charging parameter set or power battery parameters, target charging parameters are determined. These target charging parameters match the charging parameter set or power battery parameters and are used to extend the service life of the power battery. Charging the power battery using these target charging parameters can slow down the capacity decay of the power battery, maximize the service life of the power battery, and enhance the user experience.

[0085] It should be noted that the above steps 201-203 are a brief description of the vehicle charging method provided in the embodiment of the present application. The following will combine some examples to provide a more detailed description of the vehicle charging method provided in the embodiment of the present application. Figure 3 Taking the execution subject as a vehicle-mounted terminal as an example, the method includes the following steps.

[0086] 301. When the power battery of a vehicle is in a charging state, the vehicle-mounted terminal obtains a charging parameter set corresponding to the charging method of the power battery, and the vehicle is a hybrid vehicle.

[0087] Among them, in the embodiment of the present application, when the power battery is in a charging state, the vehicle may be in a driving state or in a power-off state. Accordingly, the driving state and the power-off state of the vehicle correspond to different charging methods, respectively. The charging methods of the power battery include internal charging and external charging. Internal charging refers to charging the power battery by the vehicle's engine, and external charging refers to charging the power battery by a charging pile. When the vehicle is in a driving state, the charging method of the power battery is internal charging, that is, the power battery is charged by the internal engine. When the vehicle is in a power-off state, the charging method of the power battery is external charging, that is, the power battery is charged by an external charging pile. The charging parameter set includes a plurality of parameters related to power battery charging, and the types of parameters in the charging parameter set are different under different charging methods.

[0088] In one possible implementation, when a vehicle's power battery is in a charging state, the onboard terminal obtains the vehicle's engine operating parameters or charging port parameters. Based on the engine operating parameters or charging port parameters, the onboard terminal determines a charging method for the power battery and obtains a charging parameter set corresponding to the charging method.

[0089] Among them, the engine operating parameters are used to indicate the working state of the engine, for example, the engine operating parameters are used to indicate whether the engine is running. The charging port parameters are used to indicate whether the charging port of the vehicle is connected to the charging pile. In some embodiments, the on-board terminal determines whether the power battery is in a charging state based on the charging flag of the power battery, and the charging flag of the power battery is provided by the battery management system of the vehicle. When the charging flag is the first flag, the on-board terminal determines that the power battery is in a charging state; when the charging flag is the second flag or the third flag, the on-board terminal determines that the power battery is not in a charging state. The first flag is assigned by the battery management system when there is a charging current; the second flag is assigned by the battery management system when there is a discharging current; the third flag is assigned by the battery management system when there is neither a charging current nor a discharging current.

[0090] In this embodiment, when the vehicle is in a charging state, the vehicle's engine operating parameters or charging port parameters are obtained and used to determine the power battery charging mode. The determined charging mode is highly accurate. Based on the determined charging mode, the corresponding charging parameter set is obtained.

[0091] In order to explain the above embodiment more clearly, the above embodiment will be described in several parts below.

[0092] Part 1: When the vehicle's power battery is in a charging state, the vehicle-mounted terminal obtains the vehicle's engine operating parameters or charging port parameters.

[0093] In one possible implementation, when the vehicle's power battery is in a charging state, the vehicle-mounted terminal obtains the engine operating parameters through the vehicle's hybrid controller. Alternatively, the vehicle-mounted terminal obtains the charging port parameters of the vehicle's charging port through the vehicle's charging controller.

[0094] Among them, the hybrid controller can control the vehicle's engine and electric motor. The hybrid controller is connected to multiple sensors on the engine and electric motor, and can obtain parameters related to the engine and electric motor through these multiple sensors. The engine operating parameters are among the parameters obtained related to the engine. The charging controller belongs to the vehicle's battery management system and is used to manage the charging process of the power battery. The charging controller is connected to the charging port. When the charging port is not connected to a charging pile, the charging controller collects the charging port voltage level as a first voltage level. When the charging port is connected to a charging pile, the charging controller collects the charging port voltage level as a second voltage level. The first and second levels are different. The charging controller can use the collected voltage level to determine whether the charging port is connected to a charging pile, thereby generating the corresponding charging port parameters.

[0095] In this embodiment, when the power battery is in a charging state, the engine operating parameters are obtained through the hybrid controller, or the charging port parameters are obtained through the charging controller. The acquisition efficiency of the engine operating parameters and the charging port parameters is high.

[0096] In the second part, the vehicle terminal determines the charging method of the power battery based on the engine operating parameters or charging port parameters.

[0097] In one possible implementation, when the engine operating parameter indicates that the vehicle's engine is in operation, or when the charging port parameter indicates that the vehicle is not connected to a charging pile, the on-board terminal determines the charging mode of the power battery as internal charging. When the engine operating parameter indicates that the vehicle's engine is not in operation, or when the charging port parameter indicates that the vehicle is connected to a charging pile, the on-board terminal determines the charging mode of the power battery as external charging.

[0098] Among them, when the power battery is in a charging state and the engine is in a working state, it means that the engine, not the charging pile, is currently providing energy to charge the power battery, so it is internal charging. In addition, when the power battery is in a charging state and the vehicle is not connected to a charging pile, it also means that the engine, not the charging pile, is currently providing energy to charge the power battery, so it is internal charging. When the power battery is in a charging state and the engine is not in a working state, it means that the charging pile, not the engine, is currently providing energy to charge the power battery, so it is external charging. In addition, when the power battery is in a charging state and the vehicle is connected to a charging pile, it means that the charging pile, not the engine, is currently providing energy to charge the power battery, so it is external charging.

[0099] In this embodiment, the charging mode of the power battery is determined using the engine operating parameters or the charging port parameters, and the charging mode is determined more efficiently.

[0100] Part 3: The vehicle terminal obtains the charging parameter set corresponding to the charging method.

[0101] In one possible implementation, if the charging method is internal charging, the vehicle terminal obtains the current engine charging power of the vehicle's engine and the optimal charging power range of the power battery. The optimal charging power range is the charging power range that maximizes the service life of the power battery. If the charging method is external charging, the vehicle terminal obtains the maximum charging power of the charging pile and the optimal charging power range.

[0102] Among them, the charging parameter set includes one of the current engine charging power and the maximum charging power and the optimal charging power range. The engine charging power is the difference between the engine output power and the vehicle's required power. The optimal charging power range of the power battery is provided by the power battery manufacturer and is not limited in this embodiment of the present application. Accordingly, the current engine charging power and the optimal charging power range of the power battery are the charging parameter set corresponding to internal charging, and the maximum charging power and the optimal charging power range are the charging parameter set corresponding to external charging.

[0103] In this implementation, a charging parameter set corresponding to the charging mode can be obtained, and the efficiency of obtaining the charging parameter set is high.

[0104] For example, if the charging method is internal charging, the vehicle terminal obtains the vehicle's current required torque and the engine's current output power. The vehicle terminal subtracts the current output power from the current required torque to obtain the engine's current engine charging power. The vehicle terminal uses the charging controller to determine the optimal charging power range for the power battery. If the charging method is external charging, the vehicle terminal's charging controller obtains the maximum charging power of the charging pile and the optimal charging power range.

[0105] Among them, when the charging method is internal charging, the on-board terminal can use the current output power of the engine and the current required torque of the vehicle to determine the engine charging power, and the accuracy of the engine charging power is relatively high. The optimal charging power range of the power battery is stored in the charging controller, and the on-board terminal can directly obtain the optimal charging power range from the charging controller. Of course, in addition to being stored in the charging controller, the optimal charging power range can also be stored in other hardware, and the embodiments of the present application do not limit this. When the charging method is internal charging, the charging controller will communicate with the charging pile, and the charging pile will send the charging pile information to the charging controller. The charging pile information includes the maximum charging power of the charging pile. In related technologies, the charging controller will control the charging pile to charge the power battery based on the charging pile information. Therefore, the on-board terminal can obtain the maximum charging power of the charging pile from the charging controller.

[0106] It should be noted that the technical solution provided in the embodiments of this application is executed after the user turns on target mode. For example, in response to a target mode on-screen instruction, the vehicle terminal begins executing step 301 above. Target mode prioritizes protecting the power battery, and is also known as "mild mode." Of course, the user can turn target mode on or off through the vehicle screen.

[0107] 302. The vehicle-mounted terminal determines a target charging parameter of the power battery based on the charging parameter set, where the target charging parameter is a charging parameter used to extend the service life of the power battery of the vehicle.

[0108] Among them, the target charging parameter is a parameter used to charge the power battery. For example, the target charging parameter can be the charging power or the charging current, which is not limited in the embodiment of the present application. Extending the service life of the power battery of the vehicle does not mean increasing the service life on the basis of the original service life of the power battery, but making the service life of the power battery as close as possible to the theoretical maximum service life of the power battery. In other words, extending the service life means that after adopting the technical solution provided by the embodiment of the present application, the service life of the power battery is longer than before adopting the technical solution provided by the embodiment of the present application. To put it another way, the target charging parameter can be a charging parameter that reduces the attenuation rate of the power battery, or a charging parameter that optimizes the service life of the power battery. As long as the purpose of using a certain charging parameter is to extend the service life of the power battery, it falls within the range of the above-mentioned target charging parameter.

[0109] In one possible implementation, if the charging parameter set includes the vehicle's current engine charging power and the optimal charging power range of the power battery, the onboard terminal determines the smaller of the current engine charging power and the upper limit of the optimal charging power range as the target charging parameter. The optimal charging power range is the charging power range that maximizes the service life of the power battery. If the charging parameter set includes the maximum charging power of the charging pile and the optimal charging power range of the power battery, the onboard terminal determines the smaller of the maximum charging power and the upper limit of the optimal charging power range as the target charging parameter.

[0110] The charging parameter set includes the vehicle's current engine charging power and the optimal charging power range for the power battery, indicating that the charging method is internal charging. The upper limit of the optimal charging power range is the maximum charging power that maximizes the power battery's service life. Determining the target charging parameter as the smaller of the current engine charging power and the upper limit of the optimal charging power range ensures that the charging power of the power battery does not exceed the maximum charging power that maximizes the power battery's service life, thereby protecting the power battery. In this case, the target charging parameter is the first target charging power (the smaller of the current engine charging power and the upper limit of the optimal charging power range). The charging parameter set includes the maximum charging power of the charging pile and the optimal charging power range for the power battery, indicating that the charging method is external charging. Determining the smaller of the maximum charging power and the upper limit of the optimal charging power range ensures that the charging power of the power battery does not exceed the maximum charging power that maximizes the power battery's service life, thereby protecting the power battery. In this case, the target charging parameter is the second target charging power (the smaller of the maximum charging power and the upper limit of the optimal charging power range).

[0111] In this embodiment, a charging parameter set is used to determine the target charging parameter. The determination method is to determine the smaller charging power in the charging parameter set as the target charging parameter, thereby avoiding charging the power battery with excessive charging power and extending the service life of the power battery.

[0112] In some embodiments, after determining the target charging parameters based on the above implementation, the vehicle terminal can also perform the following steps.

[0113] In a possible implementation, when the battery temperature is not within the optimal battery temperature range, the vehicle-mounted terminal adjusts the determined target charging parameter to a first charging parameter, which is used to adjust the charging power of the power battery to a preset value.

[0114] Among them, the battery temperature is not in the optimal battery temperature range, including the battery temperature being greater than the upper limit of the optimal battery temperature range and the battery temperature being less than the lower limit of the optimal battery temperature range. The decay rate of the service life of the power battery is slower when charging within the optimal battery temperature range. Correspondingly, the decay rate of the service life of the power battery is faster when charging outside the optimal battery temperature range. Therefore, when the power battery is not within the optimal battery temperature range, the determined target charging parameter is adjusted to the first charging parameter, so that the power battery stops charging, forming temperature protection for the power battery and extending the service life of the power battery. Generally speaking, the optimal battery temperature range is provided by the manufacturer of the power battery. If the manufacturer does not provide it, the optimal battery temperature range is set by the technician according to the actual situation, and the embodiments of the present application do not limit this. In some embodiments, the preset value is 0.

[0115] Under this embodiment, after determining the target charging parameters, it is also possible to determine whether the determined target charging parameters need to be adjusted based on the battery temperature. That is, by determining whether the battery temperature is within the optimal battery temperature range of the power battery, it is determined whether the target charging parameters need to be adjusted to the first charging parameters, thereby further protecting the power battery and extending the service life of the power battery.

[0116] In one possible embodiment, when the battery charging current is greater than or equal to a preset charging current, the vehicle-mounted terminal adjusts the determined target charging parameter to a second charging parameter, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current, and the preset charging current is associated with the battery temperature.

[0117] Among them, when the battery charging current of the power battery is less than the preset charging current, the decay rate of the service life of the power battery is slower. Correspondingly, when the battery charging current of the power battery is greater than or equal to the preset charging current, the decay rate of the service life of the power battery is faster. Therefore, when the battery charging current of the power battery is greater than or equal to the preset charging current, the determined target charging parameter is adjusted to the second charging parameter to reduce the battery charging current when the power battery is charged, thereby forming a battery charging current protection for the power battery and extending the service life of the power battery. The preset charging current is associated with the battery temperature, which means that the preset charging current is determined based on the battery temperature. Generally speaking, the preset charging current is provided by the manufacturer of the power battery. If the manufacturer does not provide it, the preset charging current is set by the technician according to the actual situation. The embodiments of the present application are not limited to this.

[0118] The following describes a method for determining the preset charging current based on the battery temperature.

[0119] In some embodiments, the vehicle-mounted terminal substitutes the battery temperature into the second relationship data to obtain the preset charging current.

[0120] The second relationship data is used to represent the corresponding relationship between the battery temperature and the preset charging current. The second relationship data is a relationship function, and the second relationship data is obtained by fitting based on multiple battery temperatures and the preset charging current corresponding to each battery temperature.

[0121] In this embodiment, after determining the target charging parameters, it is also possible to determine whether the determined target charging parameters need to be adjusted based on the battery charging current. That is, by determining that the battery charging current is less than the preset charging current, it is determined whether the target charging parameters need to be adjusted to the second charging parameters, thereby further protecting the power battery and extending the service life of the power battery.

[0122] In addition, when the battery temperature of the power battery is not within the optimal battery temperature range, the vehicle-mounted terminal can also perform the following steps.

[0123] In one possible implementation, when the battery temperature is not within the optimal battery temperature range, the on-board terminal sends a temperature control instruction to the thermal management system of the power battery, and the temperature control instruction is used to instruct the thermal management system to adjust the battery temperature of the power battery to the optimal battery temperature range.

[0124] The following describes a method for determining the optimal charging power range in the above embodiment.

[0125] In one possible implementation, the power battery parameters include battery temperature, current SOC, and cycle characteristics. The vehicle-mounted terminal obtains the ambient temperature of the vehicle's environment. Based on the battery temperature, current SOC, cycle characteristics, and ambient temperature, the vehicle-mounted terminal determines a first charging power and a second charging power, where the first charging power is less than the second charging power. The vehicle-mounted terminal uses the first charging power as the lower limit of the interval and the second charging power as the upper limit of the interval to obtain the optimal charging power interval.

[0126] Among them, the cycle characteristics are used to describe the charging characteristics of the power battery. For example, the cycle characteristics include the capacity attenuation rate of the power battery when charged at different charging powers at different battery temperatures, and the capacity attenuation rate when charged at different SOCs and different battery temperatures. The cycle characteristics are provided by the manufacturer of the power battery.

[0127] In this embodiment, the battery temperature, current SOC, cycle characteristics and ambient temperature of the power battery are used to determine the optimal charging power range, and the optimal charging power range is more closely matched with the actual situation of the power battery.

[0128] For example, the vehicle terminal obtains the engine's intake air temperature through a temperature sensor at the engine's intake manifold and determines the intake air temperature as the ambient temperature. The vehicle terminal inputs the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature into a charging power interval determination model. The charging power interval determination model then extracts features from the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature to obtain interval prediction features. The vehicle terminal then fully connects and normalizes the interval prediction features using the charging power interval determination model to obtain the first charging power and the second charging power, thereby obtaining the optimal charging power interval.

[0129] 303. The vehicle-mounted terminal charges the power battery based on the target charging parameter.

[0130] In a possible implementation, the vehicle-mounted terminal uses the battery charging power or battery charging current indicated by the target charging parameter to charge the power battery.

[0131] For example, when the charging mode is internal charging, the on-board terminal controls the output power of the engine based on the target charging parameter to adjust the battery charging power or battery charging current used by the engine to charge the drive battery to the battery charging power or battery charging current indicated by the target charging parameter. When the charging mode is external charging, the on-board terminal controls the charging power of the charging pile based on the target charging parameter to adjust the battery charging power or battery charging current used by the charging pile to charge the drive battery to the battery charging power or battery charging current indicated by the target charging parameter.

[0132] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described in detail here.

[0133] Using the technical solutions provided in the embodiments of this application, a charging parameter set corresponding to the power battery's charging method is obtained while the hybrid vehicle is in the charging state. Based on the obtained charging parameter set, a target charging parameter is determined. This target charging parameter matches the charging parameter set or the power battery parameters and is used to extend the power battery's service life. Charging the power battery using this target charging parameter can slow down the power battery's capacity decay, maximize the power battery's service life, and enhance the user experience.

[0134] In addition to the above steps 301-303, the present embodiment also provides another method for charging a vehicle, see Figure 4 Taking the execution subject as a vehicle-mounted terminal as an example, the method includes the following steps.

[0135] 401. The vehicle-mounted terminal obtains power battery parameters of the power battery, and the vehicle is a hybrid vehicle.

[0136] Power battery parameters represent the battery status and battery properties. Battery status describes the operating state of a power battery. Examples include battery temperature, battery charging current, and battery charging power. Battery properties are closely related to the battery's electrode and electrolyte types. For example, the optimal charging power range is a battery property.

[0137] In a possible implementation, the vehicle-mounted terminal obtains the battery parameters of the power battery through the vehicle's battery management system.

[0138] It should be noted that the technical solution provided in the embodiments of this application is executed after the user turns on target mode. For example, in response to a target mode on-screen instruction, the vehicle terminal begins executing step 401 above. Target mode prioritizes protecting the power battery, and is also known as "mild mode." Of course, the user can turn target mode on or off through the vehicle screen.

[0139] 402. The vehicle-mounted terminal determines a target charging parameter of the power battery based on the power battery parameters of the power battery. The target charging parameter is a charging parameter used to extend the service life of the power battery of the vehicle.

[0140] In a possible embodiment, the power battery parameter includes battery temperature, battery charging current or battery charging power. When the battery temperature is not within the optimal battery temperature range, the vehicle terminal determines the target charging parameter as the first charging parameter. The optimal battery temperature range is the battery temperature range with the longest service life of the power battery. The first charging parameter is used to adjust the charging power of the power battery to a preset value.

[0141] The battery temperature not being within the optimal battery temperature range includes the battery temperature being greater than the upper limit of the optimal battery temperature range and the battery temperature being less than the lower limit of the optimal battery temperature range. When charging within the optimal battery temperature range, the service life of the power battery decays more slowly. Correspondingly, when charging outside the optimal battery temperature range, the service life of the power battery decays more rapidly. Therefore, when the power battery is not within the optimal battery temperature range, the target charging parameter is directly determined as the first charging parameter, causing the power battery to stop charging, thereby no longer outputting power to the electric motor. This provides temperature protection for the power battery and extends its service life.

[0142] In this embodiment, whether the target charging parameter needs to be determined as the first charging parameter is determined by determining whether the battery temperature is within the optimal battery temperature range of the power battery, thereby protecting the power battery when the battery temperature is too high or too low (not within the optimal battery temperature range) and extending the service life of the power battery.

[0143] Another implementation of the above step 402 is described below.

[0144] In one possible embodiment, the power battery parameter includes a battery charging current. When the battery charging current is greater than or equal to a preset charging current, the vehicle terminal determines the target charging parameter as a second charging parameter. The preset charging current is associated with the battery temperature, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current.

[0145] Among them, when the battery charging current of the power battery is less than the preset charging current, the decay rate of the service life of the power battery is slower. Correspondingly, when the battery charging current of the power battery is greater than or equal to the preset charging current, the decay rate of the service life of the power battery is faster. Therefore, when the battery charging current of the power battery is greater than or equal to the preset charging current, the target charging parameter is directly determined as the first charging parameter, so that the power battery reduces the charging current, forms temperature protection for the power battery, and extends the service life of the power battery.

[0146] In this embodiment, whether the target charging parameter needs to be determined as the first charging parameter is determined by determining whether the charging current is greater than or equal to the preset charging current, thereby protecting the power battery when the charging current is too high and extending the service life of the power battery.

[0147] 403. The vehicle-mounted terminal charges the power battery based on the target charging parameter.

[0148] In a possible implementation, the vehicle-mounted terminal uses the battery charging power or battery charging current indicated by the target charging parameter to charge the power battery.

[0149] For example, when the charging mode is internal charging, the on-board terminal controls the output power of the engine based on the target charging parameter to adjust the battery charging power or battery charging current used by the engine to charge the drive battery to the battery charging power or battery charging current indicated by the target charging parameter. When the charging mode is external charging, the on-board terminal controls the charging power of the charging pile based on the target charging parameter to adjust the battery charging power or battery charging current used by the charging pile to charge the drive battery to the battery charging power or battery charging current indicated by the target charging parameter.

[0150] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described in detail here.

[0151] Using the technical solutions provided in the embodiments of this application, power battery parameters are acquired while a hybrid vehicle is charging. Target charging parameters are determined based on the acquired power battery parameters. These target charging parameters match the charging parameter set or power battery parameters and are used to extend the service life of the power battery. Charging the power battery using these target charging parameters can mitigate capacity degradation, maximize the service life of the power battery, and enhance the user experience.

[0152] Figure 5 This is a schematic diagram of the structure of a vehicle charging device provided in an embodiment of the present application, see Figure 5 The device includes: an acquisition module 501, a target charging parameter determination module 502 and a charging module 503.

[0153] The acquisition module 501 is used to acquire a charging parameter set corresponding to the charging mode of the power battery when the power battery of the vehicle is in a charging state, or to acquire power battery parameters of the power battery, if the vehicle is a hybrid vehicle.

[0154] The target charging parameter determination module 502 is used to determine the target charging parameters of the power battery based on the charging parameter set, or to determine the target charging parameters of the power battery based on the power battery parameters of the power battery. The target charging parameters are charging parameters used to extend the service life of the power battery of the vehicle.

[0155] The charging module 503 is configured to charge the power battery based on the target charging parameter.

[0156] In one possible implementation, the acquisition module 501 is configured to acquire engine operating parameters or charging port parameters of the vehicle when the vehicle's power battery is in a charging state. Based on the engine operating parameters or charging port parameters, the module determines a charging mode for the power battery and acquires a charging parameter set corresponding to the charging mode.

[0157] In one possible implementation, the acquisition module 501 is configured to determine the charging mode of the power battery as internal charging when the engine operating parameter indicates that the vehicle's engine is in an operating state, or when the charging port parameter indicates that the vehicle is not connected to a charging pile. If the engine operating parameter indicates that the vehicle's engine is not in an operating state, or when the charging port parameter indicates that the vehicle is connected to a charging pile, determine the charging mode of the power battery as external charging.

[0158] In one possible implementation, the acquisition module 501 is configured to, when the charging mode is internal charging, obtain the current engine charging power of the vehicle's engine and the optimal charging power range of the power battery. The optimal charging power range is the charging power range that maximizes the service life of the power battery. When the charging mode is external charging, the maximum charging power of the charging pile and the optimal charging power range are obtained. The charging parameter set includes one of the current engine charging power and the maximum charging power, as well as the optimal charging power range.

[0159] In one possible implementation, the target charging parameter determination module 502 is configured to, when the charging parameter set includes the vehicle's current engine charging power and the power battery's optimal charging power range, determine the smaller of the current engine charging power and an upper limit of the optimal charging power range as the target charging parameter, where the optimal charging power range is the charging power range that maximizes the power battery's service life. When the charging parameter set includes the maximum charging power of the charging pile and the power battery's optimal charging power range, determine the smaller of the maximum charging power and an upper limit of the optimal charging power range as the target charging parameter.

[0160] In one possible implementation, the power battery parameters include battery temperature and battery charging current. The target charging parameter determination module 502 is further configured to, if the battery temperature is not within the optimal battery temperature range, adjust the determined target charging parameter to a first charging parameter, where the first charging parameter is used to adjust the charging power of the power battery to a preset value. Alternatively, if the battery charging current is greater than or equal to a preset charging current, adjust the determined target charging parameter to a second charging parameter, where the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current, where the preset charging current is associated with the battery temperature.

[0161] In one possible implementation, the power battery parameter includes a battery temperature, a battery charging current, or a battery charging power. The target charging parameter determination module 502 is configured to, if the battery temperature is not within an optimal battery temperature range, determine the target charging parameter as a first charging parameter, wherein the optimal battery temperature range is the battery temperature range with the longest service life of the power battery, and the first charging parameter is used to adjust the charging power of the power battery to a preset value. Alternatively, if the battery charging current is greater than or equal to a preset charging current, the target charging parameter is determined as a second charging parameter, wherein the preset charging current is associated with the battery temperature, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current.

[0162] In a possible embodiment, the device also includes a temperature control module for sending a temperature control instruction to the thermal management system of the power battery when the battery temperature is not within the optimal battery temperature range. The temperature control instruction is used to instruct the thermal management system to adjust the battery temperature of the power battery to the optimal battery temperature range.

[0163] In one possible implementation, the power battery parameters include battery temperature, current SOC, and cycle characteristics, and the method for determining the optimal charging power range includes:

[0164] Get the ambient temperature of the vehicle's environment.

[0165] A first charging power and a second charging power are determined based on the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature, wherein the first charging power is less than the second charging power.

[0166] The first charging power is used as the lower limit of the interval, and the second charging power is used as the upper limit of the interval to obtain the optimal charging power interval.

[0167] It should be noted that the vehicle charging device provided in the above embodiment is merely an example of the division of the aforementioned functional modules when charging a vehicle. In actual applications, the aforementioned functions can be assigned to different functional modules as needed, that is, the internal structure of the computer device can be divided into different functional modules to complete all or part of the functions described above. Furthermore, the vehicle charging device provided in the above embodiment and the vehicle charging method embodiment are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0168] Using the technical solution provided in the embodiments of this application, the hybrid vehicle's required power is obtained while the vehicle is in motion, thereby determining the total power required from the engine and electric motor. Target charging parameters for controlling the engine and electric motor are determined based on the required power, engine parameters, and power battery parameters, or based on the power battery parameters. The hybrid vehicle's engine and electric motor are controlled based on the target charging parameters and the required power to mitigate power battery capacity degradation, maximize the power battery's service life, and enhance the user experience while still meeting the required power.

[0169] The embodiment of the present application also provides a vehicle, Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0170] Typically, the vehicle 600 includes one or more processors 601 and one or more memories 602 .

[0171] The processor 601 may include one or more processing cores, such as a 4-core processor, a 6-core processor, etc. The processor 601 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor 601 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 601 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 601 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0172] The memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices and flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 602 is used to store at least one computer program, which is executed by the processor 601 to implement the vehicle charging method provided in the method embodiment of the present application.

[0173] Those skilled in the art will understand that Figure 6 The structure shown in the figure does not constitute a limitation on the vehicle 600, and the vehicle 600 may include more or fewer components than shown in the figure, or combine certain components, or adopt a different component arrangement.

[0174] In addition, the device provided in the embodiments of the present application may specifically be a chip, component or module, and the chip may include a connected processor and memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a vehicle charging method provided in the above embodiment.

[0175] This embodiment also provides a computer-readable storage medium, which stores computer program code. When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement a vehicle charging method provided in the above embodiment.

[0176] This embodiment also provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the above-mentioned related steps to implement the vehicle charging method provided in the above embodiment.

[0177] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0178] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by 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.

[0179] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, 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.

[0180] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A vehicle charging method, characterized in that: The method comprises: When a power battery of the vehicle is in a charging state, obtaining a charging parameter set corresponding to a charging mode of the power battery, or obtaining power battery parameters of the power battery, where the vehicle is a hybrid vehicle; determining a target charging parameter of the power battery based on the charging parameter set, or determining a target charging parameter of the power battery based on a power battery parameter of the power battery, wherein the target charging parameter is a charging parameter for extending the service life of the power battery of the vehicle; The power battery is charged based on the target charging parameter.

2. The method according to claim 1, characterized in that When the power battery of the vehicle is in a charging state, obtaining a charging parameter set corresponding to the charging mode of the power battery includes: When the power battery of the vehicle is in a charging state, obtaining engine operating parameters or charging port parameters of the vehicle; Determining a charging method for the power battery based on the engine operating parameters or charging port parameters; Obtain a charging parameter set corresponding to the charging mode.

3. The method according to claim 2, characterized in that The determining of the charging mode of the power battery based on the engine operating parameters or the charging port parameters includes: When the engine operating parameter indicates that the engine of the vehicle is in an operating state, or when the charging port parameter indicates that the vehicle is not connected to a charging pile, determining the charging mode of the power battery to be internal charging; When the engine operating parameter indicates that the engine of the vehicle is not in an operating state, or when the charging port parameter indicates that the vehicle is connected to a charging pile, the charging mode of the power battery is determined to be external charging.

4. The method according to claim 3, characterized in that The acquiring of a charging parameter set corresponding to the charging mode includes: When the charging mode is internal charging, obtaining the current engine charging power of the vehicle engine and the optimal charging power range of the power battery, where the optimal charging power range is the charging power range with the longest service life of the power battery; When the charging mode is external charging, obtaining the maximum charging power of the charging pile and the optimal charging power range; The charging parameter set includes one of the current engine charging power and the maximum charging power and the optimal charging power range.

5. The method according to claim 1, wherein The determining, based on the charging parameter set, a target charging parameter of the power battery includes: When the charging parameter set includes the current engine charging power of the vehicle and the optimal charging power range of the power battery, the smaller of the current engine charging power and an upper limit of the optimal charging power range is determined as the target charging parameter, and the optimal charging power range is the charging power range that maximizes the service life of the power battery. When the charging parameter set includes the maximum charging power of the charging pile and the optimal charging power range of the power battery, the smaller of the maximum charging power and the upper limit of the optimal charging power range is determined as the target charging parameter.

6. The method according to claim 5, characterized in that The power battery parameters include battery temperature and battery charging current. The method further includes: When the battery temperature is not within the optimal battery temperature range, adjusting the determined target charging parameter to a first charging parameter, where the first charging parameter is used to adjust the charging power of the power battery to a preset value; Alternatively, when the battery charging current is greater than or equal to a preset charging current, the determined target charging parameter is adjusted to a second charging parameter, wherein the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current, and the preset charging current is associated with the battery temperature.

7. The method according to claim 1, characterized in that The power battery parameters include battery temperature, battery charging current, or battery charging power. Determining the target charging parameters of the power battery based on the power battery parameters includes: If the battery temperature is not within the optimal battery temperature range, determining the target charging parameter as a first charging parameter, wherein the optimal battery temperature range is a battery temperature range in which the service life of the power battery is longest, and the first charging parameter is used to adjust the charging power of the power battery to a preset value; Alternatively, when the battery charging current is greater than or equal to a preset charging current, the target charging parameter is determined as a second charging parameter, the preset charging current is associated with the battery temperature, and the second charging parameter is used to reduce the battery charging current of the power battery to less than the preset charging current.

8. The method according to claim 6 or 7, characterized in that The method further comprises: When the battery temperature is not within the optimal battery temperature range, a temperature control instruction is sent to the thermal management system of the power battery, wherein the temperature control instruction is used to instruct the thermal management system to adjust the battery temperature of the power battery to the optimal battery temperature range.

9. The method according to claim 5, characterized in that The power battery parameters include battery temperature, current SOC, and cycle characteristics. The method for determining the optimal charging power range includes: Obtaining the ambient temperature of the environment in which the vehicle is located; determining a first charging power and a second charging power based on the battery temperature, the current SOC, the cycle characteristics, and the ambient temperature, the first charging power being less than the second charging power; The first charging power is used as the lower limit of the interval, and the second charging power is used as the upper limit of the interval to obtain the optimal charging power interval.

10. A vehicle, characterized in that: The vehicle comprises: a memory for storing executable program code; A processor, configured to call and run the executable program code from the memory, so that the vehicle executes the vehicle charging method according to any one of claims 1 to 9.

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