Charging control method and device of vehicle, equipment and medium

Abstract

The invention discloses a vehicle charging control method and device, equipment and a medium, and relates to the technical field of charging control. The method comprises the steps that in the charging process of a storage battery of a target vehicle, first battery state information of a power battery of the target vehicle and charging connection state information of the target vehicle are obtained, and the charging connection state information is used for indicating the connection state of a charging port of the target vehicle and external charging equipment; determining target charging power corresponding to the storage battery based on the power supply capability of the power battery indicated by the first battery state information and the charging connection state information; and charging the storage battery with the target charging power. According to the method, when the storage battery is charged through the power battery, under the condition that the electric quantity of the power battery is too low, the power battery is prevented from being continuously in an over-discharge state to generate negative effects on the health of the power battery, the power battery is protected when the storage battery is charged, and the service life of the power battery is prolonged.

Description

Technical Field

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

[0002] With the world's increasing attention to environmental protection and sustainable development, the new energy vehicle industry has developed rapidly.

[0003] The way that batteries are charged in new energy vehicles is significantly different from that in traditional vehicles. Traditional vehicles rely on internal combustion engines and fuel systems, while new energy vehicles rely on batteries and motor systems. In new energy vehicles, when only the power battery is working, the power battery charges the battery because the generator is not working.

[0004] However, when the power battery continues to charge the storage battery, it is easy to affect the battery health of the power battery itself. Summary of the invention

[0005] The embodiment of the present application provides a vehicle charging control method, device, equipment and medium. The technical solution is as follows:

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

[0007] During the charging process of the power battery of the target vehicle to the storage battery, obtaining first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle, wherein 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;

[0008] determining a target charging power corresponding to the storage battery based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information;

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

[0010] In another aspect, a charging control device for a vehicle is provided, the device comprising:

[0011] An acquisition module, used to acquire first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle during the charging process of the power battery of the target vehicle to the storage battery, wherein 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;

[0012] a determination module, configured to determine a target charging power corresponding to the storage battery based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information;

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

[0014] On the other hand, a vehicle-mounted device is provided, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement a vehicle charging control method as described in any of the above-mentioned embodiments of the present application.

[0015] On the other hand, a computer-readable storage medium is provided, in which at least one instruction, at least one program, a code set or an instruction set is stored. 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 a vehicle charging control method as described in any of the above-mentioned embodiments of the present application.

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

[0017] The technical solution provided by 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 when charging the storage battery based on the first battery status information of the power battery and the connection status with the external charging device, so as to avoid the situation where the power battery is too low when charging the storage battery through the power battery, and avoid the negative impact on the health of the power battery caused by the power battery being in an over-discharge state for a long time, thereby protecting the power battery when charging the storage battery and extending the battery life of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application;

[0021] Figure 2 is a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application;

[0022] Figure 3 is a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application;

[0023] Figure 4 is a schematic diagram of a system for providing a charging function provided by an exemplary embodiment of the present application;

[0024] Figure 5 is a structural block diagram of a vehicle charging control device provided by an exemplary embodiment of the present application;

[0025] Figure 6 It is a structural block diagram of a vehicle-mounted device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0027] Please refer to Figure 1 , which shows a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application. In the embodiment of the present application, the method is illustrated by taking the method being executed by an on-board device of a target vehicle as an example. The method includes the following steps 101 to 103.

[0028] Step 101 : during the process of charging the storage battery by the power battery of the target vehicle, first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle are obtained.

[0029] Optionally, the target vehicle can be implemented as an internal combustion engine vehicle (Internal Combustion Engine Vehicles, ICEV), electric vehicles (Electric Vehicles, EV), hybrid vehicles, plug-in hybrid electric vehicles (Plug-in Hybrid Electric Vehicles, PHEV), range-extended electric vehicles (Range-Extended Electric Vehicles, REEV), fuel cell electric vehicles (Fuel Cell Electric Vehicles, FCEV), mild hybrid vehicles (Mild Hybrid Vehicles, MHV), etc., without limitation here.

[0030] Schematically, the target vehicle is equipped with an on-board device, which is an electronic device in the target vehicle used to provide functions and services. Optionally, the on-board device can exchange data and communicate with various devices and electronic components of the vehicle itself; optionally, the on-board device can connect to the Internet through the Internet of Vehicles to achieve data exchange and communication between vehicles, between vehicles and infrastructure, and between vehicles and user devices.

[0031] Schematically, the target vehicle is equipped with a storage battery and a power battery. The storage battery is also called a starting battery. The functions of the storage battery include starting the internal combustion engine, providing power for the vehicle's lighting, ignition system, and on-board electronic equipment, etc. The charging methods of the storage battery include engine charging and power battery charging. Among them, the engine charging is the direct charging of the generator through the belt drive when the engine is running, and the power battery charging is the charging of the storage battery by the power battery when the engine is not running. The power battery is a battery used to provide the main or auxiliary driving force for the target vehicle, that is, the power battery drives the target vehicle to travel through the motor.

[0032] In an embodiment of the present application, the target vehicle provides a charging control function for the battery through an on-board device, wherein 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 to be charged or in the charging process, the charging control function provides charging control for the battery.

[0034] Optionally, the first battery status information of the power battery includes at least one of the power battery's state of charge (SOC) information, discharge power, power battery temperature status information, and charging and power-off status information. Among them, the power status information is used to indicate the amount of power stored in the power battery. In some embodiments, the ratio between the remaining power of the power battery and the rated capacity is used as the power status information of the power battery, for example, SOC100%, SOC50%. The discharge power is used to indicate the available discharge power that the power battery can provide under the current remaining power. The temperature status information is used to indicate the state of the battery temperature of the power battery. Optionally, the above-mentioned battery temperature includes at least one of the power battery cell temperature, battery module temperature, battery pack temperature, battery surface temperature, connection point temperature, battery ambient temperature, and system coolant temperature. The charging and power-off status information is used to indicate that the power battery is in a charging state or a power-off state, wherein the power-off state is used to indicate the state in which the vehicle battery stops charging.

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

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

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

[0038] In the embodiment of the present application, whether the current state of the power battery has the power supply capability to charge the storage battery is determined according to the first battery state information and the charging connection state information.

[0039] In some embodiments, when the first battery status information matches the first condition, and / or the charging connection status 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, wherein 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 status information and the first condition matching may be implemented as at least one of the following:

[0041] 1. When the first battery status information includes power status information, when a first remaining power indicated by the power status information is less than or equal to a 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, when the discharge power is less than or equal to a preset discharge power, it is determined that the first battery status information matches the first condition, wherein the preset discharge power is the minimum discharge power set by the power battery before leaving the factory.

[0043] 3. When the first battery status information includes temperature status information of the power battery, when the temperature status information indicates that the battery temperature of the power battery is higher than a 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 and power-off status information, and when the charging and power-off status information indicates that the power battery is in a power-off state, it is determined that the first battery status information matches the first condition.

[0045] Optionally, the matching of the charging connection state information and the second condition may 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, it is determined that the charging connection status information matches the second condition.

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

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

[0049] In the embodiment of the present application, the power battery is controlled to charge the storage battery at a target charging power determined based on the first battery status information and the charging connection status information.

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

[0051] To sum up, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power when charging the storage battery based on the first battery status information of the power battery and the connection status with the external charging device, so as to avoid the situation where the power battery is too low when charging the storage battery through the power battery, and avoid the negative impact on the health of the power battery caused by the power battery being in an over-discharge state for a long time, thereby protecting the power battery when charging the storage battery and extending the battery life of the power battery.

[0052] In some optional embodiments, the charging power of the battery is determined based on the operating state of the power battery of the target vehicle and whether the target vehicle is connected to an external charging device. For example, please refer to Figure 2 , which shows a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application, the method comprising steps 201 to 205.

[0053] Step 201 : during the charging process of the power battery of the target vehicle to the storage battery, first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle are obtained.

[0054] Optionally, the target vehicle may be realized as an internal combustion engine driven vehicle, an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, an extended range electric vehicle, a fuel cell electric vehicle, a mild hybrid vehicle, etc., which is not limited here.

[0055] Schematically, the target vehicle is equipped with a storage battery and a power battery. The storage battery is also called a starting battery. The functions of the storage battery include starting the internal combustion engine, providing power for the vehicle's lighting, ignition system, and on-board electronic equipment, etc. The charging methods of the storage battery include engine charging and power battery charging. Among them, the engine charging is the direct charging of the generator through the belt drive when the engine is running, and the power battery charging is the charging of the storage battery by the power battery when the engine is not running. The power battery is a battery used to provide the main or auxiliary driving force for the target vehicle, that is, the power battery drives the target vehicle to travel through the motor.

[0056] In an embodiment of the present application, the target vehicle provides a charging control function for the battery through an on-board device, wherein 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 to be charged or in the charging process, the charging control function provides charging control for the battery.

[0058] Optionally, the first battery status information of the power battery includes at least one of power status information, discharge power, temperature status information of the power battery, and charging and disconnecting status information of the power battery.

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

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

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

[0062] In the embodiment of the present application, the working state of the power battery includes a normal state and a pre-over-discharge state. The normal state is used to indicate that the power battery can provide a discharge function normally, that is, under the battery state indicated by the first battery state information of the power battery, the power battery can complete a normal discharge function; the pre-over-discharge state is used to indicate that the power battery is about to exceed the corresponding lower limit of the safe discharge voltage.

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

[0064] In some embodiments, when the first battery status information includes discharge power, when the discharge power is less than or equal to a preset discharge power, the working 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 power battery before leaving the factory.

[0065] In some embodiments, the working state of the power battery is determined based on the first remaining power and the discharge power of the power battery. Indicatively, the first remaining power of the power battery is determined based on the first battery status information; the discharge power corresponding to the power battery is determined based on the first battery status information; the preset discharge power corresponding to the power battery is obtained, wherein the preset discharge power is the minimum discharge power set by the power battery before leaving the factory; 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 working state of the power battery is determined to be a pre-over-discharge 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, the working state of the power battery is determined to be a normal state. That is, when the first remaining power and the discharge power meet the threshold conditions at the same time, it is determined that the working state of the power battery is in a pre-over-discharge state.

[0066] Step 203: When the working state of the power battery is a pre-over-discharge state and the charging connection state 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.

[0067] In an embodiment of the present application, when the working state of the power battery is a pre-over-discharge state, and the charging connection state 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 discharge 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 between the target vehicle and a fast charging gun and a slow charging gun. When the working state of the power battery is a pre-over-discharge state and the target vehicle is not connected to a fast charging gun and a slow charging gun, the first charging power is used as the target charging power.

[0069] In some embodiments, when the first battery status information includes temperature status information of the power battery, the target charging power corresponding to the battery is determined based on the temperature status information. Schematically, when the temperature status 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: when the working state of the power battery is normal and / or the charging connection state 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.

[0071] In an embodiment of the present application, when the operating state of the power battery is normal, or the charging connection state information indicates that the target vehicle is connected to an external charging device, it is determined that the power battery is ready 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 a normal charging power.

[0072] In some embodiments, when the first battery status information also includes temperature status information of the power battery, after determining that the charging connection status information indicates that the charging port of the target vehicle has been connected to an external charging device, the target charging power is further determined based on the temperature status information of the power battery. In an exemplary manner, when it is determined that the charging connection status information indicates that the charging port of the target vehicle has been connected to an external charging device, the temperature status information of the power battery is obtained, and when the temperature status 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, and when the temperature status 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 , controlling the power battery to charge the storage battery at the target charging power.

[0074] In the embodiment of the present application, the power battery is controlled to charge the storage battery at a target charging power determined based on the first battery status information and the charging connection status information.

[0075] Specifically, when the working state of the power battery is 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 battery is charged with a first charging power; when the working state of the power battery is 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 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, that is, the target charging power is indicated to the charging control unit, and the charging control unit controls the charging power of the power battery when charging the battery according to the received target charging power. In one example, when the target charging power is 0, the charging control unit controls the power battery to stop charging the battery.

[0077] To sum up, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power when charging the storage battery based on the first battery status information of the power battery and the connection status with the external charging device, so as to avoid the situation where the power battery is too low when charging the storage battery through the power battery, and avoid the negative impact on the health of the power battery caused by the power battery being in an over-discharge state for a long time, thereby protecting the power battery when charging the storage battery and extending the battery life of the power battery.

[0078] In some optional embodiments, when charging the battery, in addition to performing charging control based on the determined target charging power, a corresponding target charging voltage is also determined based on the second battery status information of the battery, so as to control the charging process of the battery together with the target charging power. Figure 3 As shown, it shows a flow chart of a vehicle charging control method provided by an exemplary embodiment of the present application, and the method includes steps 301 to 304.

[0079] Step 301 , during the charging process of the power battery of the target vehicle to the storage battery, first battery status information of the power battery of the target vehicle, charging connection status information of the target vehicle, and second battery status information of the storage battery are obtained.

[0080] Optionally, the target vehicle may be realized as an internal combustion engine driven vehicle, an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, an extended range electric vehicle, a fuel cell electric vehicle, a mild hybrid vehicle, etc., which is not limited here.

[0081] Schematically, the target vehicle is equipped with a storage battery and a power battery. The storage battery is also called a starting battery. The functions of the storage battery include starting the internal combustion engine, providing power for the vehicle's lighting, ignition system, and on-board electronic equipment, etc. The charging methods of the storage battery include engine charging and power battery charging. Among them, the engine charging is the direct charging of the generator through the belt drive when the engine is running, and the power battery charging is the charging of the storage battery by the power battery when the engine is not running. The power battery is a battery used to provide the main or auxiliary driving force for the target vehicle, that is, the power battery drives the target vehicle to travel through the motor.

[0082] In an embodiment of the present application, the target vehicle provides a charging control function for the battery through an on-board device, wherein 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 to be charged or in the charging process, the charging control function provides charging control for the battery.

[0084] Optionally, the first battery status information of the power battery includes at least one of power status information, discharge power, temperature status information of the power battery, and charging and disconnecting status information of the power battery.

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

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

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

[0088] Step 302: Determine a target charging power corresponding to the storage battery based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information.

[0089] In the embodiment of the present application, whether the current state of the power battery has the power supply capability to charge the storage battery is determined according to the first battery state information and the charging connection state information.

[0090] In some embodiments, when the first battery status information matches the first condition, and / or the charging connection status 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, wherein 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 first battery status information; when the operating state of the power battery is 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 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: Acquire a target charging voltage corresponding to the battery based on the second battery status information.

[0093] In the embodiment of the present application, the charging voltage when charging the battery is determined by the second battery status information of the battery, so that a suitable charging voltage is used to avoid damage to the battery during the charging process.

[0094] In some embodiments, the second battery status information includes the second remaining power of the battery, that is, the target charging voltage is determined according to the second remaining power. Schematically, when the second remaining power reaches the second power threshold, the first charging voltage is used as the target charging voltage; when the second remaining power is lower than the second power threshold, the second charging voltage is used as the target charging voltage; wherein the first charging voltage is lower than the second charging voltage, exemplarily, 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 power threshold is 100%, and the first charging voltage is 0, that is, when it is detected that the battery is fully charged, the charging voltage is controlled to 0 to avoid damage to the battery caused by overcharging the battery and improve the battery life of the battery.

[0095] In some embodiments, the second battery status information includes the battery temperature of the battery, that is, the target charging voltage is determined according to the battery temperature of the battery. Schematically, when the battery temperature reaches a preset temperature threshold, the third charging voltage is used as the target charging voltage; when the battery temperature is lower than the preset temperature threshold, the fourth charging voltage is used as the target charging voltage; wherein the third charging voltage is lower than the fourth charging voltage, exemplarily, 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 a second remaining power of the battery and a battery temperature of the battery, and an Energy Efficiency Management (EEM) loaded on the target vehicle determines the target charging voltage based on the second remaining power and the battery temperature of the battery.

[0097] In some embodiments, artificial intelligence (AI) technology is introduced to determine the target charging voltage through a pre-trained voltage prediction model. Schematically, the second battery state information includes the second remaining power of the battery and the battery temperature of the battery. The second remaining power and the battery temperature are input into the pre-trained voltage prediction model, and the voltage distribution including the target charging voltage is predicted by the voltage prediction model, wherein the voltage distribution includes the target charging voltage of the battery matching the second remaining power and the battery temperature, and a plurality of candidate charging voltages within a preset period after charging at the target charging voltage, and the voltage distribution is used to indicate the change of the appropriate charging voltage under the influence of the power change and temperature change of the battery after charging at the target charging voltage; the power battery is controlled to charge the battery based on the voltage distribution and the target charging power. That is, the voltage distribution predicted by the voltage prediction model controls the charging process of the battery according to the voltage distribution in the future charging period, so that the charging voltage can match the power and temperature of the battery during the charging process, avoid overcharging and overheating of the battery, and thus improve the battery life of the battery.

[0098] Optionally, the above voltage prediction model can be implemented by neural network models such as convolutional neural networks (CNN), feedforward neural networks (FNN), residual networks (ResNet), transformers, etc., which are not specifically limited here.

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

[0100] In the embodiment of the present application, the power battery is controlled to charge the storage battery with a target charging power determined based on the first battery status information and the charging connection status information, and a target charging voltage determined based on the second battery status information.

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

[0102] To sum up, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power when charging the storage battery based on the first battery status information of the power battery and the connection status with the external charging device, so as to avoid the situation where the power battery is too low when charging the storage battery through the power battery, and avoid the negative impact on the health of the power battery caused by the power battery being in an over-discharge state for a long time, thereby protecting the power battery when charging the storage battery and extending the battery life of the power battery.

[0103] In an embodiment of the present application, a target charging voltage when charging the battery is determined based on the second battery status information of the battery, thereby avoiding the problem of overcharging the battery when the battery is fully charged, or the problem of reduced battery charging safety caused by continuing to charge the battery when the battery temperature is too high, thereby protecting the battery when charging and extending the battery life.

[0104] Schematically, the vehicle-mounted device that provides charging control function for the battery is implemented as a powertrain domain control system (PDCS) in the target vehicle as an example. Figure 4 As shown, the system 400 for providing a charging function for a battery in a target vehicle includes the following electronic components in the target vehicle:

[0105] Electronic Battery Sensor (EBS) 410, Front Left Zone Control Unit (FLZCU) 420, Battery Management System (BMS) 430, Powertrain Domain Control System (PDCS) 440, Charging Control Unit (CDU) 450.

[0106] The function of the EBS 410 is to calculate the state of the battery based on the detected current, voltage and temperature of the battery, so as to obtain the second battery state information of the battery (for example, the second remaining power SOC of the battery, etc.).

[0107] The function of FLZCU420 is to integrate and control various electronic and electrical components in the left front area of ​​the target vehicle and collect data from various sensors in the area. In the embodiment of the present application, the function is to receive the second battery status information (including battery temperature and battery SOC) sent by EBS410 and calculate the target charging voltage corresponding to the battery according to the internal EEM software.

[0108] The BMS 430 is used to monitor and manage the working status of the vehicle power battery, ensure the safety of the battery pack, extend the battery life and optimize the battery performance. In the embodiment of the present application, the BMS 430 transmits the first battery status information (including the power battery SOC and discharge power) and the charging connection status information of the power battery to the PDCS 440 through the controller area network (CAN).

[0109] The role of PDCS440 is to coordinate and control the operation of the entire power system, including the engine (for hybrid vehicles), motor, BMS430, gearbox, and energy recovery system. In the embodiment of the present application, the role is to receive the charging connection status information sent by CDU450, the first battery status information and charging connection status information sent by BMS430. After PDCS440 determines the target charging power, it transmits the signal to CDU450 and forwards the target charging voltage sent by FLZCU420.

[0110] The CDU 450 is responsible for managing and controlling the charging process of the vehicle battery. In the embodiment of the present application, the CDU 450 receives the target charging low voltage and target charging power signals sent by the PDCS 440 and performs the charging operation on the battery according to the signals.

[0111] Specifically, the process of the system 400 providing charging control for the battery includes:

[0112] Step 1: EBS 410 detects and sends the battery status.

[0113] Illustratively, the EBS 410 calculates the second battery status information (including the battery temperature and the battery SOC) of the battery based on the detected current, voltage and temperature of the battery, and transmits the second battery status information to the FLZCU 420 through the CAN network.

[0114] Step 2: FLZCU420 decides and sends the target charging voltage.

[0115] Illustratively, FLZCU 420 receives the second battery status information (including battery temperature and battery SOC) sent by EBS 410 , calculates the target charging voltage according to the internal EEM software, and then transmits the target charging voltage signal to PDCS 440 via the CAN network.

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

[0117] Illustratively, the BMS 430 sends the monitored connection status signal of the fast charging gun and the first battery status information of the power battery (including the SOC and available discharge power of the power battery) to the PDCS 440 .

[0118] Step 4: CDU 450 sends a connection signal of the slow charging gun to PDCS 440.

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

[0120] Step 5: PDCS 440 makes a decision on the target charging power, and sends the target charging power and forwards the target charging voltage to CDU 450, which specifically includes the following sub-steps.

[0121] Sub-step 1 : PDCS 440 forwards the target charging voltage to CDU 450 .

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

[0123] Sub-step 3, PDCS440 determines whether the vehicle currently has external power input based on the connection status signal of the fast charging gun sent by BMS430 and the connection status signal of the slow charging gun sent by CDU450.

[0124] In sub-step 4, PDCS440 decides whether to limit the charging power of CDU450 based on the working status of the power battery and the connection status of the charging port. If the fast / slow charging gun is 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, the target charging power sent by PDCS440 to CDU450 is limited to 0 to prevent over-discharge of the power battery. In other operating scenarios, PDCS440 does not limit the target charging power of CDU450.

[0125] Step 6: CDU 450 receives the target charging voltage and target charging power sent by PDCS 440 and performs actions.

[0126] Illustratively, after receiving the target charging voltage and target charging power sent by PDCS 440 , CDU 450 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 before collecting relevant data of users and during the process of collecting relevant data of users, this application can display a prompt interface, pop-up window or output voice prompt information, and the prompt interface, pop-up window or voice prompt information is used to prompt the user that its relevant data is currently being collected, so that this application only starts to execute the relevant steps of obtaining relevant data of users after obtaining the confirmation operation issued by the user to the prompt interface or pop-up window, otherwise (that is, when the confirmation operation issued by the user to the prompt interface or pop-up window is not obtained), the relevant steps of obtaining relevant data of users are terminated, that is, the relevant data of users are not obtained. In other words, all user data collected by this application are collected with the consent and authorization of the user, and the collection, use and processing of relevant user data need to comply with the relevant laws, regulations and standards of relevant countries and regions.

[0128] Please refer to Figure 5 , which shows a structural block diagram of a vehicle charging control device provided by an exemplary embodiment of the present application, the device includes the following modules:

[0129] An acquisition module 510 is used to acquire first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle during the charging process of the power battery of the target vehicle to the storage battery, wherein 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] a determination module 520, configured to determine a target charging power corresponding to the storage battery based on the power supply capacity 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 determination module 520 is further used to determine the working state of the power battery based on the first battery state information, the working 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 lower limit of the safe discharge voltage;

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

[0134] The determination module 520 is further configured to use the second charging power as the target charging power when the operating state of the power battery is the normal state and / or the charging connection state information indicates that the charging port of the target vehicle is connected to the external charging device;

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

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

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

[0138] The acquisition module 510 is further used to acquire a preset discharge power corresponding to the power battery, where the preset discharge power is the minimum discharge power set by the power battery before leaving the factory;

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

[0140] The determination module 520 is further configured to determine that the operating state of the power battery is 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 used to acquire second battery status information of the battery;

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

[0143] The control module 530 is further configured 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 a second remaining power 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 a 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 a battery temperature of the battery;

[0149] The determining module 520 is further configured to use the 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 the fourth charging voltage as the target charging voltage when the battery temperature is lower than the preset temperature threshold;

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

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

[0153] The determination 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, wherein the voltage distribution includes a target charging voltage of the battery that matches the second remaining power and the battery temperature, and a plurality of candidate charging voltages within a preset period of time after charging at the target charging voltage, wherein the voltage distribution is used to indicate a change in the appropriate charging voltage under the influence of a change in power and a change in temperature of the battery after charging at the target charging voltage;

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

[0155] To sum up, when the generator is not running and the power battery is charging the storage battery, the target vehicle determines the target charging power when charging the storage battery based on the first battery status information of the power battery and the connection status with the external charging device, so as to avoid the situation where the power battery is too low when charging the storage battery through the power battery, and avoid the negative impact on the health of the power battery caused by the power battery being in an over-discharge state for a long time, thereby protecting the power battery when charging the storage battery and extending the battery life of the power battery.

[0156] It should be noted that the vehicle charging control device provided in the above embodiment is only illustrated by 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 is divided into different functional modules to complete all or part of the functions described above. In addition, the vehicle charging control device provided in the above embodiment and the vehicle charging control method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0157] Figure 6 A structural block diagram of a vehicle-mounted device 600 provided by an exemplary embodiment of the present application is shown.

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

[0159] The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 601 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). 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 central processing unit (CPU); 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 graphics processing unit (GPU), 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 artificial intelligence (AI) processor, which is used to process computing 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 a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, 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 instruction, which is used to be executed by the processor 601 to implement the vehicle charging control method provided in the method embodiment of the present application.

[0161] Illustratively, the vehicle-mounted device 600 further includes other components 603, which can be understood by those skilled in the art. Figure 6 The structure shown in the figure does not constitute a limitation on the vehicle-mounted device 600, and may include more or fewer components than shown in the figure, or combine certain components, or adopt a different component arrangement.

[0162] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, which can be a computer-readable storage medium contained in the memory in the above embodiments; or it can be a computer-readable storage medium that exists independently and is not assembled in the terminal. The computer-readable storage medium stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, the at least one program, the code set or instruction set is loaded and executed by the processor to implement the vehicle charging control method described in any of the above embodiments.

[0163] Optionally, the computer readable storage medium may include: a read-only memory (ROM), a random access memory (RAM), a solid state drive (SSD), or an optical disk. Among them, the random access memory may include a resistance random access memory (ReRAM) and a dynamic random access memory (DRAM). The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0164] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

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

Claims

1. A vehicle charging control method, characterized in that: The method comprises: During the charging process of the power battery of the target vehicle to the storage battery, obtaining first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle, wherein 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; determining a target charging power corresponding to the storage battery based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information; The power battery is controlled to charge the storage battery at the target charging power.

2. The method according to claim 1, characterized in that The determining, based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information, a target charging power corresponding to the storage battery includes: determining the working state of the power battery based on the first battery state information, the working 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 a corresponding lower limit of a safe discharge voltage; When the working state of the power battery is the pre-over-discharge state and the charging connection state information indicates that the charging port of the target vehicle is not connected to the external charging device, using the first charging power as the target charging power; When the working state of the power battery is the normal state, and / or the charging connection state 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; The first charging power is less than the second charging power.

3. The method according to claim 2, characterized in that The determining the working state of the power battery based on the first battery state information includes: determining a first remaining power of the power battery based on the first battery status information; Determining a discharge power corresponding to the power battery based on the first battery status information; Obtaining a preset discharge power corresponding to the power battery, where the preset discharge power is the minimum discharge power set by the power battery before leaving the factory; When the first remaining power is lower than or equal to a first power threshold, and the discharge power is lower than or equal to the preset discharge power, determining that the working state of the power battery is the pre-over-discharge 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, it is determined that the operating state of the power battery is the normal state.

4. The method according to any one of claims 1 to 3, characterized in that: The controlling the power battery to charge the storage battery at the target charging power includes: Acquiring second battery status information of the battery; acquiring a target charging voltage corresponding to the battery based on the second battery status information; The power battery is controlled to charge the storage battery based on the target charging voltage and the target charging power.

5. The method according to claim 4, characterized in that The second battery status information includes a second remaining power of the battery; The acquiring a target charging voltage corresponding to the battery based on the second battery status information includes: When the second remaining power reaches a second power threshold, using the first charging voltage as the target charging voltage; When the second remaining power is lower than the second power threshold, using the second charging voltage as the target charging voltage; Wherein, the first charging voltage is lower than the second charging voltage.

6. The method according to claim 4, characterized in that The second battery status information includes a battery temperature of the battery; The acquiring a target charging voltage corresponding to the battery based on the second battery status information includes: When the battery temperature reaches a preset temperature threshold, using a third charging voltage as the target charging voltage; When the battery temperature is lower than the preset temperature threshold, using a fourth charging voltage as the target charging voltage; Wherein, the third charging voltage is lower than the fourth charging voltage.

7. The method according to claim 4, characterized in that The second battery status information includes a second remaining power of the battery and a battery temperature of the battery; The acquiring a target charging voltage corresponding to the battery based on the second battery status information includes: Inputting the second remaining power and the battery temperature into a pre-trained voltage prediction model, and predicting a voltage distribution including the target charging voltage through the voltage prediction model, wherein the voltage distribution includes a target charging voltage of the battery that matches the second remaining power and the battery temperature, and a plurality of candidate charging voltages within a preset period of time after charging at the target charging voltage, wherein the voltage distribution is used to indicate a suitable charging voltage change under the influence of a power change and a temperature change of the battery after charging at the target charging voltage; The controlling the power battery to charge the storage battery based on the target charging voltage and the target charging power includes: The power battery is controlled to charge the storage battery based on the voltage distribution and the target charging power.

8. A vehicle charging control device, characterized in that: The device comprises: An acquisition module, used to acquire first battery status information of the power battery of the target vehicle and charging connection status information of the target vehicle during the charging process of the power battery of the target vehicle to the storage battery, wherein 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; a determination module, configured to determine a target charging power corresponding to the storage battery based on the power supply capacity of the power battery indicated by the first battery status information and the charging connection status information; A control module is used to control the power battery to charge the storage battery at the target charging power.

9. A vehicle-mounted device, characterized in that: The vehicle-mounted device includes a processor and a memory, wherein the memory stores at least one program, and the at least one program is loaded and executed by the processor to implement the vehicle charging control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: At least one program code is stored in the computer-readable storage medium, and the program code is loaded and executed by the processor to implement the vehicle charging control method as described in any one of claims 1 to 7.

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