Vehicle charging control methods, devices, equipment and media

Abstract

This application discloses a charging control method, device, equipment, and medium for a vehicle, relating to the field of charging control technology. The method includes: during the charging process of a target vehicle's battery, acquiring first battery state information of the target vehicle's power battery and charging connection state information of the target vehicle, the charging connection state information indicating the connection status between the target vehicle's charging port and an external charging device; determining a target charging power for the battery based on the power supply capacity indicated by the first battery state information and the charging connection state information; and charging the battery at the target charging power. This method, when charging the battery through the power battery, avoids the negative impact on the battery health caused by the power battery being continuously over-discharged when the power battery's charge is too low, thus protecting the power battery and extending its lifespan during charging.

Description

Technical Field

[0001] This application relates to the field of charging control technology, and in particular to a charging control method, device, equipment and medium for a vehicle. Background Technology

[0002] With increasing global emphasis on environmental protection and sustainable development, the new energy vehicle industry has experienced rapid growth.

[0003] The charging method for batteries in new energy vehicles differs significantly from that of traditional vehicles. Traditional vehicles rely on internal combustion engines and fuel systems, while new energy vehicles rely on battery and electric motor systems. In new energy vehicles, when only the power battery is operational, the alternator is not working, and the power battery charges the rechargeable battery.

[0004] However, when the power battery continuously charges the storage battery, it can easily affect the battery health of the power battery itself. Summary of the Invention

[0005] This application provides a method, apparatus, device, and medium for controlling the charging of a vehicle. The technical solution is as follows:

[0006] On the one hand, a charging control method for a vehicle is provided, the method comprising:

[0007] During the charging process of the target vehicle's power battery to the storage battery, the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle are obtained. The charging connection status information is used to indicate the connection status between the target vehicle's charging port and the external charging device.

[0008] Based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information, the target charging power corresponding to the storage battery is determined.

[0009] The power battery is controlled to charge the storage battery at the target charging power.

[0010] On the other hand, a charging control device for a vehicle is provided, the device comprising:

[0011] The acquisition module is used to acquire the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle during the charging process of the target vehicle's power battery to the storage battery. The charging connection status information is used to indicate the connection status between the target vehicle's charging port and the external charging device.

[0012] The determination module is used to determine the target charging power corresponding to the storage battery based on the power supply capability of the power battery indicated by the first battery status information and the charging connection status information;

[0013] The control module is used to control the power battery to charge the storage battery at the target charging power.

[0014] On the other hand, an in-vehicle device is provided, the in-vehicle device including a processor and a memory, the memory storing at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least one program, the code set or instruction set being loaded and executed by the processor to implement the vehicle charging control method as described in any of the embodiments of this application above.

[0015] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction, at least one program, code set, or instruction set is stored therein, wherein the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by a processor to implement the vehicle charging control method as described in any of the embodiments of this application above.

[0016] On the other hand, a computer program product or computer program is provided, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the vehicle charging control method described in any of the above embodiments.

[0017] The technical solution provided in this application includes at least the following beneficial effects:

[0018] When the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power for the storage battery based on the first battery state information of the power battery and the connection status with the external charging equipment. This avoids the power battery being in an over-discharged state when the power battery is charging the storage battery, thus preventing the negative impact on the battery health caused by the power battery being too low. This protects the power battery and extends its battery life when charging the storage battery. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application;

[0021] Figure 2 This is a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application;

[0022] Figure 3 This is a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application;

[0023] Figure 4 This is a schematic diagram of a system providing charging functionality according to an exemplary embodiment of this application;

[0024] Figure 5 This is a structural block diagram of a vehicle charging control device provided in an exemplary embodiment of this application;

[0025] Figure 6 This is a structural block diagram of an in-vehicle device provided in an exemplary embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0027] Please refer to Figure 1 The document illustrates a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application. In this embodiment, the method is described as being executed by the on-board equipment of the target vehicle. The method includes the following steps 101 to 103.

[0028] Step 101: During the charging process of the target vehicle's power battery to the storage battery, obtain the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle.

[0029] Optionally, the target vehicle can be an internal combustion engine vehicle (ICEV), an electric vehicle (EV), a hybrid electric vehicle, a plug-in hybrid electric vehicle (PHEV), a range-extended electric vehicle (REEV), a fuel cell electric vehicle (FCEV), a mild hybrid electric vehicle (MHV), etc., and is not limited here.

[0030] Indicatively, the target vehicle is equipped with onboard equipment, which is an electronic device in the target vehicle used to provide functions and services. Optionally, the onboard equipment can exchange and communicate data with various devices and electronic components of the vehicle itself; optionally, the onboard equipment can connect to the Internet through vehicle-to-everything (V2X) communication to realize data exchange and communication between vehicles, between vehicles and infrastructure, and between vehicles and user equipment.

[0031] This illustration shows the target vehicle equipped with a storage battery and a power battery. The storage battery, also known as a starter battery, functions to start the internal combustion engine and provide power to the vehicle's lighting, ignition system, and onboard electronics. The storage battery is charged via engine charging and power battery charging. Engine charging involves the alternator directly charging the battery via belt drive while the engine is running. Power battery charging occurs when the engine is not running, with the power battery charging the storage battery. The power battery provides the primary or auxiliary driving force to the target vehicle; that is, the power battery drives the target vehicle through an electric motor.

[0032] In this embodiment of the application, the target vehicle provides a charging control function for the battery through an on-board device. The charging control function is used to control the charging power, charging voltage, charging time, etc. of the battery in the target vehicle during the charging process.

[0033] In some embodiments, when the generator of the target vehicle is not running and the battery of the target vehicle is in a state of waiting to be charged or in the process of charging, the above-mentioned charging control function provides charging control for the battery.

[0034] Optionally, the first battery state information of the power battery includes at least one of the following: State of Charge (SOC) information, discharge power, temperature status information, and charge / discharge status information. The SOC information indicates the amount of charge stored in the power battery. In some embodiments, the ratio between the remaining charge and the rated capacity of the power battery is used as the SOC information, for example, SOC 100% or SOC 50%. The discharge power indicates the available discharge power that the power battery can provide with its current remaining charge. The temperature status information indicates the battery temperature status. Optionally, the battery temperature includes at least one of the following: cell temperature, battery module temperature, battery pack temperature, battery surface temperature, connection point temperature, battery ambient temperature, and system coolant temperature. The charge / discharge status information indicates whether the power battery is in a charging state or a de-energized state, wherein the de-energized state indicates that the vehicle battery has stopped charging.

[0035] The charging connection status information of the target vehicle is used to indicate the connection status between the target vehicle's charging port and the external charging device. The external charging device is any device that can provide power output to the target vehicle, such as a home charging station, a public charging station, or a fast-charging station.

[0036] In some embodiments, the charging connection status information of the target vehicle includes at least one of the connection status between the target vehicle and the fast charging gun and the connection status between the target vehicle and the slow charging gun.

[0037] Step 102: Determine the target charging power of the battery based on the power supply capacity indicated by the first battery status information and the charging connection status information.

[0038] In this embodiment of the application, the current state of the power battery is determined to have the power supply capability to charge the storage battery based on the first battery state information and the charging connection state information.

[0039] In some embodiments, when the first battery state information matches the first condition, and / or the charging connection state information matches the second condition, the first charging power is determined as the target charging power; otherwise, the second charging power is determined as the target charging power. The first charging power is a low charging power, and the second charging power is a normal charging power, that is, the first charging power is lower than the second charging power. In one example, the first charging power is 0.

[0040] Optionally, the first battery state information and the first condition matching can be implemented as at least one of the following:

[0041] 1. When the first battery status information includes power status information, if the first remaining power indicated by the power status information is less than or equal to the first power threshold, it is determined that the first battery status information matches the first condition.

[0042] 2. When the first battery status information includes discharge power, and when the discharge power is less than or equal to the preset discharge power, the first battery status information and the first condition are determined to match. The preset discharge power is the minimum discharge power set by the power battery at the factory.

[0043] 3. When the first battery status information includes the temperature status information of the power battery, and the temperature status information indicates that the battery temperature of the power battery is higher than the specified temperature threshold, it is determined that the first battery status information matches the first condition.

[0044] 4. When the first battery status information includes charging / discharging status information, and when the charging / discharging status information indicates that the power battery is in a power-off state, the first battery status information and the first condition are determined to match.

[0045] Optionally, the charging connection status information and the second condition matching can be implemented as at least one of the following:

[0046] 1. When the charging status information indicates that the target vehicle is not connected to the fast charging gun, determine that the charging connection status information and the second condition match.

[0047] 2. When the charging status information indicates that the target vehicle is not connected to the slow charging gun, determine that the charging connection status information and the second condition match.

[0048] Step 103: Control the power battery to charge the storage battery with the target charging power.

[0049] In this embodiment of the application, the power battery charges the storage battery with a target charging power determined based on the first battery state information and the charging connection state information.

[0050] In some embodiments, the charging process of the battery is controlled by a charging distribution unit (CDU) in the target vehicle. Specifically, a target charging power is indicated to the charging distribution unit, which then controls the charging power of the power battery when charging the battery. In one example, when the target charging power is 0, the charging distribution unit controls the power battery to stop charging the battery.

[0051] In summary, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power for the storage battery based on the first battery state information of the power battery and the connection status with the external charging equipment. This avoids the power battery being in an over-discharged state when the power battery is charging the storage battery, thus preventing the negative impact on the battery's health caused by the power battery being too low and continuously over-discharged. This protects the power battery and extends its battery life during the charging process.

[0052] In some optional embodiments, the charging power of the battery is determined based on the operating state of the target vehicle's power battery and whether the target vehicle is connected to an external charging device. For illustrative examples, please refer to [reference needed]. Figure 2 The diagram illustrates a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application, the method including steps 201 to 205.

[0053] Step 201: During the charging process of the target vehicle's power battery to the storage battery, obtain the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle.

[0054] Optionally, the target vehicle can be an internal combustion engine driven vehicle, an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, a range-extended electric vehicle, a fuel cell electric vehicle, a mild hybrid vehicle, etc., without limitation.

[0055] This illustration shows the target vehicle equipped with a storage battery and a power battery. The storage battery, also known as a starter battery, functions to start the internal combustion engine and provide power to the vehicle's lighting, ignition system, and onboard electronics. The storage battery is charged via engine charging and power battery charging. Engine charging involves the alternator directly charging the battery via belt drive while the engine is running. Power battery charging occurs when the engine is not running, with the power battery charging the storage battery. The power battery provides the primary or auxiliary driving force to the target vehicle; that is, the power battery drives the target vehicle through an electric motor.

[0056] In this embodiment of the application, the target vehicle provides a charging control function for the battery through an on-board device. The charging control function is used to control the charging power, charging voltage, charging time, etc. of the battery in the target vehicle during the charging process.

[0057] In some embodiments, when the generator of the target vehicle is not running and the battery of the target vehicle is in a state of waiting to be charged or in the process of charging, the above-mentioned charging control function provides charging control for the battery.

[0058] Optionally, the first battery state information of the power battery includes at least one of the following: power battery state of charge information, discharge power, power battery temperature state information, and charge / discharge state information.

[0059] The charging connection status information of the target vehicle is used to indicate the connection status between the target vehicle's charging port and the external charging device. The external charging device is any device that can provide power output to the target vehicle, such as a home charging station, a public charging station, or a fast-charging station.

[0060] In some embodiments, the charging connection status information of the target vehicle includes at least one of the connection status between the target vehicle and the fast charging gun and the connection status between the target vehicle and the slow charging gun.

[0061] Step 202: Determine the operating status of the power battery based on the first battery status information.

[0062] In this embodiment, the operating states of the power battery include a normal state and a pre-over-discharge state. The normal state indicates that the power battery can normally provide its discharge function; that is, under the battery state indicated by the first battery state information, the power battery can complete its normal discharge function. The pre-over-discharge state indicates that the power battery is about to exceed the corresponding safe discharge voltage lower limit.

[0063] In some embodiments, when the first battery status information includes charge status information, the operating state of the power battery is determined to be a pre-over-discharge state when the first remaining charge indicated by the charge status information is less than or equal to a first charge threshold. In one example, the first charge threshold is 0.

[0064] In some embodiments, when the first battery state information includes discharge power, if the discharge power is less than or equal to a preset discharge power, the operating state of the power battery is determined to be a pre-over-discharge state, wherein the preset discharge power is the minimum discharge power set by the factory for the power battery.

[0065] In some embodiments, the operating state of the power battery is determined based on both the first remaining charge and the discharge power. Illustratively, the first remaining charge of the power battery is determined based on the first battery state information; the corresponding discharge power of the power battery is determined based on the first battery state information; a preset discharge power corresponding to the power battery is obtained, wherein the preset discharge power is the minimum discharge power set at the factory of the power battery; if the first remaining charge is lower than or equal to a first charge threshold and the discharge power is lower than or equal to the preset discharge power, the operating state of the power battery is determined to be a pre-over-discharge state; if the first remaining charge is higher than the first charge threshold and / or the discharge power is higher than the preset discharge power, the operating state of the power battery is determined to be a normal state. That is, if both the first remaining charge and the discharge power simultaneously meet the threshold conditions, the operating state of the power battery is determined to be in a pre-over-discharge state.

[0066] Step 203: When the power battery is in the pre-over-discharge state and the charging connection status information indicates that the target vehicle's charging port is not connected to an external charging device, the first charging power is taken as the target charging power.

[0067] In this embodiment of the application, when the working state of the power battery is pre-over-discharged and the charging connection status information indicates that the charging port of the target vehicle is not connected to an external charging device, it is determined that the current state of the power battery is not suitable for discharging to charge the battery. Therefore, the first charging power is used as the target charging power, wherein the first charging power is a low charging power. In one example, the first charging power is 0.

[0068] In some embodiments, the charging connection status information of the target vehicle includes the connection status of the target vehicle with the fast charging gun and the connection status with the slow charging gun. When the working state of the power battery is pre-over-discharged and the target vehicle is not connected to the fast charging gun or the slow charging gun, the first charging power is used as the target charging power.

[0069] In some embodiments, when the first battery state information includes the temperature state information of the power battery, the target charging power corresponding to the battery is determined based on the temperature state information. Illustratively, when the temperature state information indicates that the battery temperature of the power battery is higher than a specified temperature threshold, the first charging power is determined as the target charging power.

[0070] Step 204: If the power battery is in normal working condition and / or the charging connection status information indicates that the target vehicle's charging port is connected to an external charging device, the second charging power is used as the target charging power.

[0071] In this embodiment of the application, when the working state of the power battery is normal, or when the charging connection status information indicates that the target vehicle has been connected to an external charging device, it is determined that the power battery has the conditions to discharge to charge the storage battery. Therefore, the second charging power is used as the target charging power, wherein the second charging power is the normal charging power.

[0072] In some embodiments, when the first battery state information further includes the temperature state information of the power battery, after determining that the charging connection state information indicates that the charging port of the target vehicle is connected to an external charging device, the target charging power is further determined based on the temperature state information of the power battery. Illustratively, when it is determined that the charging connection state information indicates that the charging port of the target vehicle is connected to an external charging device, the temperature state information of the power battery is obtained. When the temperature state information indicates that the battery temperature of the power battery is higher than a specified temperature threshold, the first charging power is determined as the target charging power. When the temperature state information indicates that the battery temperature of the power battery is lower than or equal to the specified temperature threshold, the second charging power is determined as the target charging power.

[0073] Step 205: Control the power battery to charge the storage battery with the target charging power.

[0074] In this embodiment of the application, the power battery charges the storage battery with a target charging power determined based on the first battery state information and the charging connection state information.

[0075] Specifically, when the power battery is in a pre-over-discharge state and the charging connection status information indicates that the target vehicle's charging port is not connected to an external charging device, the battery is charged with a first charging power; when the power battery is in a normal state and / or the charging connection status information indicates that the target vehicle's charging port is connected to an external charging device, the battery is charged with a second charging power.

[0076] In some embodiments, the charging process of the battery is controlled by a charging distribution unit (CDU) in the target vehicle. Specifically, a target charging power is indicated to the charging distribution unit, which then controls the charging power of the power battery when charging the battery. In one example, when the target charging power is 0, the charging distribution unit controls the power battery to stop charging the battery.

[0077] In summary, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power for the storage battery based on the first battery state information of the power battery and the connection status with the external charging equipment. This avoids the power battery being in an over-discharged state when the power battery is charging the storage battery, thus preventing the negative impact on the battery's health caused by the power battery being too low and continuously over-discharged. This protects the power battery and extends its battery life during the charging process.

[0078] In some optional embodiments, when charging the battery, in addition to charging control based on a determined target charging power, a corresponding target charging voltage is also determined based on the battery's second battery state information, so as to jointly control the charging process of the battery with the target charging power. (Illustrative example, such as...) Figure 3 As shown, a flowchart of a vehicle charging control method provided in an exemplary embodiment of this application is illustrated, the method including steps 301 to 304.

[0079] Step 301: During the charging process of the target vehicle's power battery to the storage battery, acquire the first battery status information of the target vehicle's power battery, the charging connection status information of the target vehicle, and the second battery status information of the storage battery.

[0080] Optionally, the target vehicle can be an internal combustion engine driven vehicle, an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, a range-extended electric vehicle, a fuel cell electric vehicle, a mild hybrid vehicle, etc., without limitation.

[0081] This illustration shows the target vehicle equipped with a storage battery and a power battery. The storage battery, also known as a starter battery, functions to start the internal combustion engine and provide power to the vehicle's lighting, ignition system, and onboard electronics. The storage battery is charged via engine charging and power battery charging. Engine charging involves the alternator directly charging the battery via belt drive while the engine is running. Power battery charging occurs when the engine is not running, with the power battery charging the storage battery. The power battery provides the primary or auxiliary driving force to the target vehicle; that is, the power battery drives the target vehicle through an electric motor.

[0082] In this embodiment of the application, the target vehicle provides a charging control function for the battery through an on-board device. The charging control function is used to control the charging power, charging voltage, charging time, etc. of the battery in the target vehicle during the charging process.

[0083] In some embodiments, when the generator of the target vehicle is not running and the battery of the target vehicle is in a state of waiting to be charged or in the process of charging, the above-mentioned charging control function provides charging control for the battery.

[0084] Optionally, the first battery state information of the power battery includes at least one of the following: power battery state of charge information, discharge power, power battery temperature state information, and charge / discharge state information.

[0085] Optionally, the second battery status information of the battery includes at least one of the battery's charge status information and battery's temperature status information.

[0086] The charging connection status information of the target vehicle is used to indicate the connection status between the target vehicle's charging port and the external charging device. The external charging device is any device that can provide power output to the target vehicle, such as a home charging station, a public charging station, or a fast-charging station.

[0087] In some embodiments, the charging connection status information of the target vehicle includes at least one of the connection status between the target vehicle and the fast charging gun and the connection status between the target vehicle and the slow charging gun.

[0088] Step 302: Based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information, determine the target charging power corresponding to the battery.

[0089] In this embodiment of the application, the current state of the power battery is determined to have the power supply capability to charge the storage battery based on the first battery state information and the charging connection state information.

[0090] In some embodiments, when the first battery state information matches the first condition, and / or the charging connection state information matches the second condition, the first charging power is determined as the target charging power; otherwise, the second charging power is determined as the target charging power. The first charging power is a low charging power, and the second charging power is a normal charging power, that is, the first charging power is lower than the second charging power. In one example, the first charging power is 0.

[0091] In some embodiments, the operating state of the power battery is determined based on the first battery state information; when the operating state of the power battery is in a pre-over-discharge state and the charging connection status information indicates that the charging port of the target vehicle is not connected to an external charging device, the first charging power is used as the target charging power; when the operating state of the power battery is in a normal state and / or the charging connection status information indicates that the charging port of the target vehicle is connected to an external charging device, the second charging power is used as the target charging power.

[0092] Step 303: Obtain the target charging voltage corresponding to the battery based on the second battery status information.

[0093] In this embodiment of the application, the charging voltage when charging the battery is determined by the second battery state information of the battery, so as to use an appropriate charging voltage to avoid damage to the battery during the charging process.

[0094] In some embodiments, the second battery status information includes the second remaining battery capacity, i.e., the target charging voltage is determined based on the second remaining battery capacity. Illustratively, when the second remaining battery capacity reaches a second capacity threshold, the first charging voltage is used as the target charging voltage; when the second remaining battery capacity is below the second capacity threshold, the second charging voltage is used as the target charging voltage; wherein the first charging voltage is lower than the second charging voltage, for example, the first charging voltage is a low-voltage charging voltage, and the second charging voltage is a normal charging voltage. In one example, the second capacity threshold is 100%, and the first charging voltage is 0, i.e., when the battery is detected to be fully charged, the charging voltage is controlled to be 0 to avoid overcharging and damage to the battery, thereby improving battery life.

[0095] In some embodiments, the second battery status information includes the battery temperature, i.e., the target charging voltage is determined based on the battery temperature. Illustratively, when the battery temperature reaches a preset temperature threshold, a third charging voltage is used as the target charging voltage; when the battery temperature is below the preset temperature threshold, a fourth charging voltage is used as the target charging voltage; wherein the third charging voltage is lower than the fourth charging voltage, for example, the third charging voltage is a low-voltage charging voltage, and the fourth charging voltage is a normal charging voltage.

[0096] In some embodiments, the second battery status information includes the second remaining charge of the battery and the battery temperature of the battery. The target charging voltage is determined by the Energy Efficiency Management (EEM) system installed in the target vehicle based on the second remaining charge and the battery temperature.

[0097] In some embodiments, artificial intelligence (AI) technology is introduced to determine the target charging voltage through a pre-trained voltage prediction model. Illustratively, the second battery state information includes the battery's remaining charge and battery temperature. The remaining charge and temperature are input into the pre-trained voltage prediction model, which predicts a voltage distribution including the target charging voltage. This voltage distribution includes a target charging voltage that matches the battery's remaining charge and temperature, and multiple candidate charging voltages within a preset period after charging at the target charging voltage. The voltage distribution indicates the appropriate charging voltage change under the influence of changes in battery charge and temperature after charging at the target charging voltage. The power battery is then controlled to charge the battery based on the voltage distribution and the target charging power. In other words, the voltage distribution predicted by the voltage prediction model is used to control the battery charging process during future charging periods, ensuring that the charging voltage matches the battery's charge and temperature during charging, preventing overcharging and overheating, and thus improving battery life.

[0098] Optionally, the voltage prediction model described above can be implemented using neural network models such as Convolutional Neural Networks (CNN), Feedforward Neural Network (FNN), Residual Network (ResNet), and Transformer, without any specific limitations.

[0099] Step 304: Control the power battery to charge the storage battery based on the target charging voltage and target charging power.

[0100] In this embodiment of the application, the power battery charges the storage battery with a target charging power determined based on the first battery state information and the charging connection state information, and a target charging voltage determined based on the second battery state information.

[0101] In some embodiments, the charging process of the battery is controlled by a charging distribution unit (CDU) in the target vehicle. Specifically, a target charging power and a target charging voltage are indicated to the charging distribution unit. The charging distribution unit controls the charging power of the power battery when charging the battery based on the received target charging power, and controls the charging voltage of the power battery when charging the battery based on the received target charging voltage. In one example, when the target charging power is 0, the charging distribution unit controls the power battery to stop charging the battery; in another example, when the target charging voltage is 0, the charging distribution unit controls the power battery to stop charging the battery.

[0102] In summary, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power for the storage battery based on the first battery state information of the power battery and the connection status with the external charging equipment. This avoids the power battery being in an over-discharged state when the power battery is charging the storage battery, thus preventing the negative impact on the battery's health caused by the power battery being too low and continuously over-discharged. This protects the power battery and extends its battery life during the charging process.

[0103] In this embodiment of the application, the target charging voltage for charging the battery is determined based on the second battery state information of the battery, thereby avoiding the problem of overcharging the battery when the battery is already fully charged, or the problem of reducing the charging safety of the battery by continuously charging the battery when the battery temperature is too high. This protects the battery and extends its battery life when charging.

[0104] As an illustration, the onboard equipment providing charging control functions for the battery is implemented as an example of the Powertrain Domain Control System (PDCS) in the target vehicle. For example... Figure 4 As shown, the system 400 for providing charging functionality for the target vehicle's battery includes the following electronic components in the target vehicle:

[0105] The following components are included: Electronic Battery Sensor (EBS) 410, FrontLeft Zone Control Unit (FLZCU) 420, Battery Management System (BMS) 430, Powertrain Domain Control System (PDCS) 440, and Charging Control Unit (CDU) 450.

[0106] The EBS410 calculates the battery status based on the detected current, voltage, and temperature, thereby obtaining secondary battery status information (e.g., the battery's second remaining charge, SOC).

[0107] The FLZCU420 integrates and controls various electronic and electrical components in the left front area of ​​the target vehicle, and collects data from various sensors in the area. In this embodiment, its function is to receive the second battery status information (including battery temperature and battery SOC) from the EBS410, and calculate the target charging voltage corresponding to the battery based on the internal EEM software.

[0108] The BMS430 monitors and manages the operating status of the vehicle's power battery, ensuring battery pack safety, extending battery life, and optimizing battery performance. In this embodiment, its function is to transmit the first battery state information (including battery SOC and discharge power) and charging connection status information to the PDCS440 via the Controller Area Network (CAN).

[0109] The PDCS440 is responsible for coordinating and controlling the operation of the entire powertrain system, including the engine (for hybrid vehicles), electric motor, BMS430, transmission, and energy recovery system. In this embodiment, it receives charging connection status information from CDU450, and first battery status information and charging connection status information from BMS430. After determining the target charging power, the PDCS440 transmits the signal to CDU450, while simultaneously forwarding the target charging voltage from FLZCU420.

[0110] The CDU450 is responsible for managing and controlling the charging process of the vehicle battery. In this embodiment, its function is to receive the target low-voltage and target charging power signals from the PDCS440 and execute the charging operation on the battery according to the signals.

[0111] Specifically, the process by which System 400 provides charging control for the battery includes:

[0112] Step 1: The EBS410 detects and transmits the battery status.

[0113] To illustrate, the EBS410 calculates the second battery status information (including battery temperature and battery SOC) based on the detected battery current, voltage, and temperature, and transmits the second battery status information to the FLZCU420 via the CAN network.

[0114] Step 2: FLZCU420 makes a decision on the target charging voltage and sends it.

[0115] To illustrate, the FLZCU420 receives the second battery status information (including battery temperature and battery SOC) from the EBS410, calculates the target charging voltage based on its internal EEM software, and then transmits the target charging voltage signal to the PDCS440 via the CAN network.

[0116] Step 3: The BMS430 detects and sends the fast charging gun connection status signal and the first battery status information of the power battery.

[0117] To illustrate, the BMS430 sends the monitored fast charging gun connection status signal and the first battery status information of the power battery (including the power battery's SOC and available discharge power) to the PDCS440.

[0118] Step 4: CDU450 sends a connection signal for the slow charging gun to PDCS440.

[0119] The CDU450 transmits the monitored slow charging gun interface connection status signal to the PDCS440 via the CAN network.

[0120] Step 5: The PDCS440 makes a decision on the target charging power and sends the target charging power and forwarded target charging voltage to the CDU450, which includes the following sub-steps.

[0121] Sub-step 1: PDCS440 forwards the target charging voltage to CDU450.

[0122] Sub-step 2: The PDCS440 determines whether the current working state of the power battery is available based on the first battery status information sent by the BMS430. When the SOC of the power battery is 0 and the available discharge power of the power battery is less than the minimum power set by the OEM, the PDCS440 determines that the power battery is about to be over-discharged, that is, the current working state of the power battery is unavailable.

[0123] In sub-step 3, the PDCS440 determines whether the vehicle is currently receiving external electrical energy based on the connection status signals of the fast charging gun sent by the BMS430 and the slow charging gun sent by the CDU450.

[0124] In sub-step 4, the PDCS440 determines whether to limit the charging power of the CDU450 based on the working status of the power battery and the connection status of the charging port. If the fast / slow charging guns are not connected, the SOC of the power battery is 0, and the available discharge power of the power battery is less than the minimum power set by the OEM, then the target charging power sent by the PDCS440 to the CDU450 is limited to 0 to prevent the power battery from being over-discharged. In other operating conditions, the PDCS440 does not limit the target charging power of the CDU450.

[0125] Step 6: CDU450 receives the target charging voltage and target charging power sent by PDCS440 and executes the action.

[0126] To illustrate, after receiving the target charging voltage and target charging power from the PDCS440, the CDU450 controls the power battery to charge the storage battery according to the target charging voltage and target charging power.

[0127] It should be noted that this application may display prompt interfaces, pop-ups, or output voice prompts before and during the collection of user data. These prompt interfaces, pop-ups, or voice prompts are used to inform the user that their data is being collected. This ensures that the application only begins the steps for collecting user data after receiving confirmation from the user regarding the prompt interface or pop-up; otherwise (i.e., without user confirmation), the steps for collecting user data end, meaning no user data is collected. In other words, all user data collected in this application is collected with the user's consent and authorization, and the collection, use, and processing of related user data must comply with the relevant laws, regulations, and standards of the relevant countries and regions.

[0128] Please refer to Figure 5 It illustrates a structural block diagram of a vehicle charging control device provided in an exemplary embodiment of this application, the device including the following modules:

[0129] The acquisition module 510 is used to acquire the first battery status information of the power battery of the target vehicle and the charging connection status information of the target vehicle during the charging process of the power battery of the target vehicle to the storage battery. The charging connection status information is used to indicate the connection status between the charging port of the target vehicle and the external charging device.

[0130] The determining module 520 is used to determine the target charging power corresponding to the storage battery based on the power supply capability of the power battery indicated by the first battery status information and the charging connection status information;

[0131] The control module 530 is used to control the power battery to charge the storage battery at the target charging power.

[0132] In some optional embodiments, the determining module 520 is further configured to determine the operating state of the power battery based on the first battery state information, the operating state including a normal state and a pre-over-discharge state, the pre-over-discharge state being used to indicate that the power battery is about to exceed the corresponding safe discharge voltage lower limit.

[0133] The determining module 520 is further configured to use the first charging power as the target charging power when the working state of the power battery is the pre-over-discharge state and the charging connection status information indicates that the charging port of the target vehicle is not connected to the external charging device.

[0134] The determining module 520 is further configured to use the second charging power as the target charging power when the working state of the power battery is the normal state and / or the charging connection status information indicates that the charging port of the target vehicle has been connected to the external charging device.

[0135] Wherein, the first charging power is less than the second charging power.

[0136] In some optional embodiments, the determining module 520 is further configured to determine the first remaining charge of the power battery based on the first battery state information;

[0137] The determining module 520 is further configured to determine the discharge power corresponding to the power battery based on the first battery state information;

[0138] The acquisition module 510 is also used to acquire the preset discharge power corresponding to the power battery, wherein the preset discharge power is the minimum discharge power set by the factory for the power battery.

[0139] The determining module 520 is further configured to determine the operating state of the power battery as the pre-over-discharge state when the first remaining power is lower than or equal to the first power threshold and the discharge power is lower than or equal to the preset discharge power.

[0140] The determining module 520 is further configured to determine the working state of the power battery as the normal state when the first remaining power is higher than the first power threshold and / or the discharge power is higher than the preset discharge power.

[0141] In some optional embodiments, the acquisition module 510 is further configured to acquire second battery status information of the storage battery;

[0142] The determining module 520 is further configured to obtain the target charging voltage corresponding to the battery based on the second battery state information;

[0143] The control module 530 is also used to control the power battery to charge the storage battery based on the target charging voltage and the target charging power.

[0144] In some optional embodiments, the second battery status information includes the second remaining charge of the battery;

[0145] The determining module 520 is further configured to use the first charging voltage as the target charging voltage when the second remaining power reaches the second power threshold.

[0146] The determining module 520 is further configured to use the second charging voltage as the target charging voltage when the second remaining power is lower than the second power threshold.

[0147] Wherein, the first charging voltage is lower than the second charging voltage.

[0148] In some optional embodiments, the second battery status information includes the battery temperature of the battery;

[0149] The determining module 520 is further configured to use a third charging voltage as the target charging voltage when the battery temperature reaches a preset temperature threshold.

[0150] The determining module 520 is further configured to use a fourth charging voltage as the target charging voltage when the battery temperature is lower than the preset temperature threshold.

[0151] The third charging voltage is lower than the fourth charging voltage.

[0152] In some optional embodiments, the second battery status information includes the second remaining charge of the battery and the battery temperature;

[0153] The determining module 520 is further configured to input the second remaining power and the battery temperature into a pre-trained voltage prediction model, and predict a voltage distribution including the target charging voltage through the voltage prediction model. The voltage distribution includes a target charging voltage that matches the battery with the second remaining power and the battery temperature, and multiple candidate charging voltages within a preset period after charging at the target charging voltage. The voltage distribution is used to indicate the appropriate charging voltage change under the influence of changes in the battery's power and temperature after charging at the target charging voltage.

[0154] The control module 530 is also used to control the power battery to charge the storage battery based on the voltage distribution and the target charging power.

[0155] In summary, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power for the storage battery based on the first battery state information of the power battery and the connection status with the external charging equipment. This avoids the power battery being in an over-discharged state when the power battery is charging the storage battery, thus preventing the negative impact on the battery's health caused by the power battery being too low and continuously over-discharged. This protects the power battery and extends its battery life during the charging process.

[0156] It should be noted that the vehicle charging control device provided in the above embodiments is only an example of the division of the above functional modules. 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. In addition, the vehicle charging control device and the vehicle charging control method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0157] Figure 6 A structural block diagram of an in-vehicle device 600 provided in an exemplary embodiment of this application is shown.

[0158] Typically, the vehicle-mounted device 600 includes a processor 601 and a memory 602.

[0159] Processor 601 may include one or more processing cores, such as a quad-core processor, an octa-core processor, etc. Processor 601 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). Processor 601 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 601 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 601 may also include an Artificial Intelligence (AI) processor, which is used to handle computational operations related to machine learning.

[0160] 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 or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 602 are used to store at least one instruction, which is executed by the processor 601 to implement the vehicle charging control method provided in the method embodiments of this application.

[0161] Indicatively, the vehicle-mounted device 600 also includes other components 603, as will be understood by those skilled in the art. Figure 6 The structure shown does not constitute a limitation on the vehicle-mounted device 600, and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0162] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. This program can be stored in a computer-readable storage medium, which may be a computer-readable storage medium included in the memory described in the above embodiments; or it may be a standalone computer-readable storage medium not assembled into the terminal. The computer-readable storage medium stores at least one instruction, at least one program segment, a code set, or an instruction set. The at least one instruction, the at least one program segment, the code set, or the instruction set is loaded and executed by the processor to implement any of the vehicle charging control methods described in the above embodiments.

[0163] Optionally, the computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), solid-state drives (SSDs), or optical discs, etc. The random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM). The sequence numbers of the embodiments in this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0164] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0165] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A charging control method for a vehicle, characterized in that, The method includes: During the charging process of the target vehicle's power battery to the storage battery, the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle are obtained. The charging connection status information is used to indicate the connection status between the target vehicle's charging port and the external charging device. The first remaining charge of the power battery is determined based on the first battery status information; The discharge power of the power battery is determined based on the first battery status information. Obtain the preset discharge power corresponding to the power battery, wherein the preset discharge power is the minimum discharge power set by the factory for the power battery; When the first remaining charge is lower than or equal to the first charge threshold and the discharge power is lower than or equal to the preset discharge power, the operating state of the power battery is determined to be a pre-over-discharge state. The pre-over-discharge state is used to indicate that the power battery is about to exceed the corresponding safe discharge voltage lower limit. If the remaining charge is higher than the first charge threshold and / or the discharge power is higher than the preset discharge power, the working state of the power battery is determined to be normal. When the power battery is in the pre-over-discharge state and the charging connection status information indicates that the charging port of the target vehicle is not connected to the external charging device, the first charging power is taken as the target charging power. When the power battery is in the normal operating state, and / or the charging connection status information indicates that the charging port of the target vehicle is connected to the external charging device, the second charging power is used as the target charging power; wherein, the first charging power is less than the second charging power; Obtain the second battery status information of the battery, which includes the second remaining charge of the battery and the battery temperature; The second remaining charge and the battery temperature are input into a pre-trained voltage prediction model. The voltage prediction model predicts a voltage distribution including a target charging voltage. The voltage distribution includes a target charging voltage that matches the battery with the second remaining charge and the battery temperature, as well as multiple candidate charging voltages within a preset period after charging at the target charging voltage. The voltage distribution is used to indicate the appropriate charging voltage change under the influence of changes in the battery's charge and temperature after charging at the target charging voltage. The power battery is controlled to charge the storage battery based on the voltage distribution and the target charging power.

2. The method according to claim 1, characterized in that, The method further includes: When the second remaining power reaches the second power threshold, the first charging voltage is used as the target charging voltage; If the remaining power is lower than the second power threshold, the second charging voltage shall be used as the target charging voltage. Wherein, the first charging voltage is lower than the second charging voltage.

3. The method according to claim 1, characterized in that, The method further includes: When the battery temperature reaches a preset temperature threshold, the third charging voltage is used as the target charging voltage. If the battery temperature is lower than the preset temperature threshold, the fourth charging voltage is used as the target charging voltage. The third charging voltage is lower than the fourth charging voltage.

4. A vehicle charging control device, characterized in that, The device includes: The acquisition module is used to acquire the first battery status information of the target vehicle's power battery and the charging connection status information of the target vehicle during the charging process of the target vehicle's power battery to the storage battery. The charging connection status information is used to indicate the connection status between the target vehicle's charging port and the external charging device. The determination module is used to determine the first remaining charge of the power battery based on the first battery state information; The determining module is further configured to determine the discharge power corresponding to the power battery based on the first battery state information; The acquisition module is further configured to acquire the preset discharge power corresponding to the power battery, wherein the preset discharge power is the minimum discharge power set by the power battery at the factory. The determining module is further configured to determine that the operating state of the power battery is a pre-over-discharge state when the first remaining power is lower than or equal to the first power threshold and the discharge power is lower than or equal to the preset discharge power. The pre-over-discharge state is used to indicate that the power battery is about to exceed the corresponding safe discharge voltage lower limit. The determining module is further configured to determine that the working state of the power battery is normal when the first remaining power is higher than the first power threshold and / or the discharge power is higher than the preset discharge power. The determining module is further configured to use the first charging power as the target charging power when the working state of the power battery is the pre-over-discharge state and the charging connection status information indicates that the charging port of the target vehicle is not connected to the external charging device. The determining module is further configured to use the second charging power as the target charging power when the working state of the power battery is the normal state and / or the charging connection status information indicates that the charging port of the target vehicle has been connected to the external charging device; wherein the first charging power is less than the second charging power. The acquisition module is further configured to acquire the second battery status information of the battery, the second battery status information including the second remaining charge of the battery and the battery temperature of the battery; The determining module is further configured to input the second remaining charge and the battery temperature into a pre-trained voltage prediction model, and predict a voltage distribution including a target charging voltage through the voltage prediction model. The voltage distribution includes a target charging voltage that matches the battery with the second remaining charge and the battery temperature, and multiple candidate charging voltages within a preset period after charging at the target charging voltage. The voltage distribution is used to indicate the appropriate charging voltage change under the influence of changes in the battery's charge and temperature after charging at the target charging voltage. The control module is used to control the power battery to charge the storage battery based on the voltage distribution and the target charging power.

5. A vehicle-mounted device, characterized in that, The on-board device includes a processor and a memory, the memory storing at least one program, which is loaded and executed by the processor to implement the vehicle charging control method as described in any one of claims 1 to 4.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to implement the charging control method for a vehicle as described in any one of claims 1 to 4.

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