CN112744102A - Vehicle charging control method and device, vehicle and storage medium - Google Patents
Vehicle charging control method and device, vehicle and storage medium Download PDFInfo
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- CN112744102A CN112744102A CN202110194170.8A CN202110194170A CN112744102A CN 112744102 A CN112744102 A CN 112744102A CN 202110194170 A CN202110194170 A CN 202110194170A CN 112744102 A CN112744102 A CN 112744102A
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- power supply
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- mounted charger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The embodiment of the application discloses vehicle charging control method, its characterized in that for charging for the vehicle, the vehicle includes on-vehicle machine and the battery that charges, on-vehicle machine that charges is used for doing the battery charges, the rifle that charges respectively with the socket with on-vehicle machine that charges is connected, does on-vehicle machine power supply, the method includes: when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket, wherein the socket is used for supplying power to the charging gun; determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. By acquiring the power supply capacity parameter of the socket and adjusting the charging parameter of the vehicle-mounted charger according to the power supply capacity parameter, the current power supply line can be protected, and the charging safety of the vehicle in different power line environments is improved.
Description
Technical Field
The present disclosure relates to the field of electric vehicle charging technologies, and more particularly, to a vehicle charging control method and apparatus, a vehicle, and a storage medium.
Background
With the aggravation of the problem of energy shortage and the problem of environmental pollution, electric vehicles have received much attention as new energy vehicles. In order to conveniently supplement energy, the electric automobile can be charged by using a socket of commercial power through a portable charging gun. However, when the power supply capacity of the power line and the socket in the charging place is unknown, the use of the charging gun is dangerous, and even the situation that the line or the socket is burnt due to overheating occurs. Therefore, how to realize safe charging of the electric vehicle under different power line environments is a problem which needs to be solved urgently at present.
Disclosure of Invention
In view of the above problems, the present application proposes a vehicle charge control method, device, vehicle, and storage medium.
In a first aspect, an embodiment of the present application provides a method, for charging a vehicle, where the vehicle includes a vehicle-mounted charger and a battery, the vehicle-mounted charger is used for charging the battery, a charging gun is connected to the vehicle-mounted charger and a socket respectively, and the vehicle-mounted charger supplies power, and the method includes: when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket, wherein the socket is used for supplying power to the charging gun; determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
In a second aspect, an embodiment of the present application provides a vehicle charging control device, for charge for the vehicle, the vehicle includes on-vehicle machine and the battery that charges, on-vehicle machine that charges is used for doing the battery charges, the rifle that charges respectively with the socket with on-vehicle machine that charges is connected, does on-vehicle machine power supply, the device includes: the socket parameter acquisition module is used for acquiring the maximum power supply parameter of the socket when the vehicle-mounted charger is successfully connected with the charging gun, wherein the socket is used for supplying power to the charging gun; the charging parameter determining module is used for determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter; and the charging control module is used for controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
In a third aspect, an embodiment of the present application provides a vehicle, including: one or more processors; a memory; one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the vehicle charging control method described above.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, where a program code is stored, where the program code is called by a processor to execute the vehicle charging control method.
The embodiment of the application discloses a vehicle charging control method, a vehicle charging control device, a vehicle and a storage medium, wherein the vehicle charging control method is used for charging the vehicle, the vehicle comprises a vehicle-mounted charger and a battery, the vehicle-mounted charger is used for charging the battery, a charging gun is respectively connected with a socket and the vehicle-mounted charger and supplies power to the vehicle-mounted charger, and the method comprises the following steps: when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of a socket, wherein the socket is used for supplying power to the charging gun; determining a target charging parameter of a vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. By acquiring the power supply capacity parameter of the socket and adjusting the charging parameter of the vehicle-mounted charger according to the power supply capacity parameter, the current charging circuit can be protected, and the charging safety of the vehicle in different power line environments is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a flowchart of a method for controlling charging of a vehicle according to an embodiment of the present application.
Fig. 2 shows a flowchart of a method for controlling charging of a vehicle according to another embodiment of the present application.
Fig. 3 shows a flowchart of a method for controlling charging of a vehicle according to another embodiment of the present application.
Fig. 4 shows a flowchart of a method for controlling charging of a vehicle according to still another embodiment of the present application.
Fig. 5 shows a flowchart of a method after step S450 in fig. 4 according to an embodiment of the present application.
Fig. 6 shows a block schematic diagram of a vehicle charging control device according to an embodiment of the present application.
FIG. 7 shows a block diagram of a vehicle according to an embodiment of the present application.
Fig. 8 shows a block diagram of a computer-readable storage medium for executing a vehicle charge control method according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Charging of an electric vehicle generally refers to a process of transferring electric energy to a battery of the electric vehicle in a controlled manner, and the input electric energy may be derived from an alternating current power source or a direct current power source. Compare in the electric pile that charges that uses fixed setting, use portable rifle that charges can charge for electric automobile through the socket of commercial power, do not receive the restriction in place of charging, convenient to use and the cost is lower. However, the power of the portable charging gun is usually fixed, or only a fixed gear is adjustable, and the portable charging gun is used for charging, so that the dependence on the line environment is large. Due to different regions and different power grids, the power supply capacity of the socket is different, wherein the power supply capacity can be the maximum output current or the maximum output power and the like. Because the vehicle-mounted charger needs to be charged through the charging gun connection socket, the line environment for charging the vehicle is different, and a power supply line is the most uncontrollable part in a portable charging scene. The use scene of the existing portable charging gun can not judge the power supply capacity of a circuit or a socket generally, and the charging safety can not be ensured.
The inventor of the application invests in research and development, and finds that in the process of charging by using the portable charging gun, the vehicle-mounted charger needs to be controlled to convert alternating current electric energy input by the portable charging gun into direct current electric energy acceptable by a battery, so that electric energy is provided for the battery of the electric automobile. That is to say, the vehicle is charged by the portable charger through a charging link composed of the socket, the portable charging gun and the vehicle-mounted charger, and the charging power on the whole charging link can be limited by adjusting the charging parameters of the vehicle-mounted charger, so that a safer charging process is realized. The inventor of the application provides a vehicle charging control method, a vehicle charging control device, a vehicle and a storage medium in the embodiment of the application on the basis of the method, and when a vehicle-mounted charger is successfully connected with a charging gun, the maximum power supply parameter of a socket is obtained; determining a target charging parameter of a vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. By acquiring the power supply capacity parameter of the socket and adjusting the charging parameter of the vehicle-mounted charger according to the power supply capacity parameter, the current charging circuit can be protected, and the charging safety of the vehicle in different power line environments is improved.
The vehicle charge control method provided by the present application will be described below with reference to specific embodiments. The vehicle charging control method provided by the embodiment of the application can be used for a vehicle. The vehicle may include an electric vehicle, a hybrid vehicle, and the like that need to be charged. The vehicle can include a vehicle-mounted charger and a battery, wherein the vehicle-mounted charger is used for charging the battery, and the charging gun is respectively connected with the socket and the vehicle-mounted charger and supplies power to the vehicle-mounted charger. Here, the type and function of the vehicle are not particularly limited.
In some embodiments, the vehicle may further include a human-machine interaction system that may communicate data with the charging control system. A user can input specified charging parameters at an intelligent terminal provided with a human-computer interaction system to control vehicle charging, and the human-computer interaction system can also acquire and display relevant information of vehicle charging to the user. The intelligent terminal can be a display screen of a central control of a vehicle, and can also be equipment such as a smart phone.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for controlling charging of a vehicle according to an embodiment of the present disclosure. As will be explained in detail below with respect to the embodiment shown in fig. 1, the method may specifically include the following steps:
step S110: and when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket.
When the charging gun is connected with the vehicle-mounted charger, the connection state of the vehicle-mounted charger and the charging gun can be judged through the charging control guide circuit. Specifically, whether the charging gun and the vehicle-mounted charger are physically connected or not can be confirmed by controlling the voltage change of the detection point on the guidance circuit. It can be understood that, when the charging gun is successfully connected with the socket and the vehicle-mounted charger, the vehicle-mounted charger is switched from a standby state to an awake state, that is, the vehicle-mounted charger can be used for supplying power to the battery. The socket is used for supplying power to the charging gun, the charging gun is used for supplying power to the vehicle-mounted charger, and the vehicle-mounted charger can be used for charging the battery, namely the socket, the charging gun, the vehicle-mounted charger and the battery can form a charging link. If the connection is not successful, an error signal is returned to prompt the user that the connection is abnormal; and if the connection is successful, acquiring the maximum power supply parameter of the socket.
Wherein the maximum power supply parameter of the receptacle is operable to characterize the ability of the receptacle to supply power to the load. In particular, the maximum power supply parameter may be at least one of a maximum current, a maximum voltage, and a maximum power that the outlet is capable of outputting. The maximum power supply parameter of the socket is related to the power grid connected with the socket, the type of the socket and the like. For example, the maximum supply parameters of three-phase and two-phase electrical outlets may be different, the maximum supply parameters of outlets connected to different regional grids may be different, and the maximum supply parameters of the same outlet at different times may also be different due to grid fluctuations.
In some embodiments, a communication module may be provided on the vehicle, and the vehicle may communicate with the receptacle through the communication module. It will be appreciated that the receptacle may also be provided with a communication module, based on which the maximum power supply parameters of the receptacle are transmitted. Specifically, the vehicle and the socket may communicate through one or more of Power Line Carrier (PLC), Wireless Fidelity (WIFI), ZigBee, bluetooth, hotspot, and the like. Alternatively, the vehicle and the outlet may communicate directly or through a server.
As one approach, when the vehicle-mounted charger is successfully connected with the charging gun, the receptacle may actively send information containing the maximum power supply parameter to the vehicle, so that the vehicle acquires the maximum power supply parameter of the receptacle when receiving the information. Alternatively, when the vehicle-mounted charger is successfully connected to the charging gun, the vehicle may send request information to the outlet, the request information requesting to obtain the maximum power supply parameter of the outlet, and the outlet may send information including the maximum power supply parameter to the vehicle in response to the request information.
In some embodiments, when the on-board charger is successfully connected with the charging gun, the vehicle and the receptacle establish power carrier communication based on the power line; the power carrier signal sent by the socket can be obtained, wherein the power carrier signal is a signal generated by the socket according to the maximum power supply parameter of the socket; the power carrier signal is identified to obtain maximum power supply parameters for the receptacle. Specifically, please refer to the following embodiments.
Step S120: and determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter.
The target charging parameters are parameters required by the vehicle-mounted charger to charge the battery. The target charging parameter may be a maximum charging power, a maximum charging voltage, a maximum charging current, and the like of the vehicle-mounted charger. As one way, the target charging parameter may be a charging parameter for limiting the output power of the vehicle-mounted charger, that is, a parameter for charging the battery by the vehicle-mounted charger outputting the direct current. Alternatively, the target charging parameter may be a charging parameter for limiting the input power of the vehicle-mounted charger, that is, a parameter of the input ac power that can be accepted by the vehicle-mounted charger.
It is understood that the maximum power supply parameter and the target charging parameter may be the same or different dimensional parameters. For example, the maximum power supply parameter may be the maximum power that the outlet can output, and the target charging parameter may be the maximum power that the vehicle-mounted charger outputs when charging. For another example, the maximum power supply parameter may be the maximum power that the socket can output, and the target charging parameter may be the maximum current that the vehicle-mounted charger outputs when charging.
In some embodiments, the maximum power supply parameter of the charging gun may also be obtained, and the maximum power supply parameter of the power supply line is determined according to the maximum power supply parameter of the charging gun and the maximum power supply parameter of the socket, that is, the maximum power supply parameter of the power supply line obtained by considering the power supply capacities of the two devices, i.e., the maximum power supply parameter of the socket and the charging gun, and then the target charging parameter of the vehicle-mounted charger is determined according to the maximum power supply parameter of the power supply line.
In some embodiments, a specified charging parameter input by a user due to a terminal device connected to the vehicle or a human-computer interface on the vehicle may also be obtained, where the specified charging parameter may be a maximum charging power or a maximum charging current, or a charging parameter obtained according to an input charging time, a charging mode, or the like. The target charging parameter corresponding to the maximum power supply parameter may be compared with the specified charging parameter, and the power supply parameter having a smaller demand for power supply capacity may be used as the target power supply parameter.
In some embodiments, a maximum supply power of the charging gun may be obtained; determining the maximum power supply power of a power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun; the maximum charging power of the vehicle-mounted charger is determined based on the maximum power supply power of the power supply line, and the maximum charging power is used for limiting the power of the vehicle-mounted charger when the vehicle-mounted charger charges the battery. Specifically, please refer to the following embodiments.
Step S130: and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
The vehicle-mounted charger can adjust the load of the charger according to the target charging parameter, so that the actual power supply parameter of the socket is not larger than the maximum power supply parameter in the process that the socket supplies power to the adjusted vehicle-mounted charger. And then can guarantee the charging process, the socket uses under the safe state, improves the security of charging. It is understood that in the case of charging a vehicle, current flows from the socket to the charging gun and then to the vehicle charger via the charging gun and then to the battery on the charging link. That is, the actual power supply parameters of the socket and the charging gun during the charging process are limited by the vehicle-mounted charger. Therefore, the actual power supply parameter of the socket can be limited not to be larger than the maximum power supply parameter by adjusting the charging parameter of the vehicle-mounted charger.
Specifically, the vehicle-mounted charger can convert alternating current input by the charging gun into direct current for charging the battery in the charging process. Specifically, the vehicle-mounted charger rectifies input alternating current through the input rectifying module, then the power factor correcting module corrects the power factor, stable direct current bus voltage is formed after filtering, then power conversion is performed through the power module, and after output filtering, direct current is output to charge the battery.
Therefore, the actual charging parameters during the charging process can be matched with the target charging parameters by adjusting the power module based on the target charging parameters. For example, the charging power can be adjusted by controlling the on/off of an Insulated Gate Bipolar Transistor (IGBT) inside the vehicle charger by Pulse Width Modulation (PWM). For example, the charging power, charging voltage, and current can be controlled by PWM to control the on/off of its internal IGBT. The vehicle-mounted charger has the advantage of continuous adjustability when adjusting the power, and can ensure that the charging power can be adjusted more optimally under the condition of safety in different use scenes and different power line environments.
In some embodiments, Battery information of a Battery Management System (BMS) may also be acquired, the BMS may perform collection, analysis, and judgment on the state of the Battery, and the charging parameter of the vehicle-mounted charger may be dynamically adjusted according to the Battery information during the charging process. That is, the charging parameter of the vehicle-mounted charger may be simultaneously affected by both the maximum power supply parameter of the outlet and the battery information of the BMS. It can be understood that, of the maximum charging parameter and the charging parameter corresponding to the battery information, the charging parameter having a smaller demand for the power supply capability of the power supply device may be used as the target charging parameter.
In some embodiments, the power supply condition can be detected in real time, and when the charge cut-off condition is met, the vehicle-mounted charger is controlled to stop charging. The charge cut-off condition may be a total voltage of the battery pack, a maximum voltage of the battery cell, a charge current, and the like. For example, near the full charge state, the voltage is constant, the current is gradually decreased, and when the current decreases below a set threshold, the charging process ends. Alternatively, a control instruction may be sent to the power supply device such as a charging gun or a socket, and the control instruction is used to control the power supply device to stop supplying power.
In some embodiments, the state information of the socket is acquired in real time during the charging process, and if the abnormal state of the socket is determined according to the state information, the vehicle-mounted charger is controlled to stop charging. Wherein the state information of the socket comprises at least one of real-time output current information and temperature information. Optionally, a current threshold may be set, and when the charging current of the vehicle-mounted charger is greater than the current threshold, the state information of the socket is obtained in real time in the charging process. Therefore, the safety of the power supply equipment side is improved when the vehicle is charged with high current.
Specifically, the socket can be provided with a functional module corresponding to the state information, and after the state information is acquired through the functional module, the socket can transmit the state information to the vehicle-mounted charger in real time through the communication module, so that the vehicle-mounted charger can know the real-time power supply condition of the socket. For example, the socket and the vehicle-mounted charger may be provided with PLC modules, the socket may program the status information through the PLC modules to obtain a PLC signal including the status information, and transmit the PLC signal to the vehicle-mounted charger through a power line, and the vehicle-mounted charger recognizes the PLC signal through the PLC modules to acquire the status information of the socket.
Further, a charging stop condition corresponding to the status information may be preset, wherein the charging stop condition is used for representing that there may be a safety risk in the continuous power supply of the socket. And after the state information of the socket is acquired, if the state information is judged to meet the charging stop condition, controlling the vehicle-mounted charger to stop charging. Alternatively, a power supply stop instruction may be sent to the outlet. For example, when the temperature information included in the safety state is greater than a preset temperature threshold value, which indicates that the socket may overheat after continuing charging, the charging is stopped.
According to the embodiment of the application, when the vehicle-mounted charger is successfully connected with the charging gun, the maximum power supply parameter of the socket is obtained; determining a target charging parameter of a vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. The power supply capacity parameters of the socket are obtained, and the charging parameters of the vehicle-mounted charger are adjusted according to the power supply capacity parameters, so that the power on a power supply line is limited, the current power supply line can be protected, and the charging safety of a vehicle in different power line environments is improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method of controlling charging of a vehicle according to an embodiment of the present application. As will be explained in detail below with respect to the embodiment shown in fig. 2, the method may specifically include the following steps:
step S210: and when the vehicle-mounted charger is successfully connected with the charging gun, acquiring a power carrier signal sent by the socket.
The socket and the vehicle-mounted charger can be provided with PLC modules, the socket can program the maximum power supply parameters of the socket through the PLC modules so as to generate a PLC signal containing the power supply capacity of the socket, and the PLC signal is sent to the vehicle-mounted charger through a power line. Specifically, the PLC module may collect data related to power supply, and then generate a maximum power supply parameter through a programming program, thereby generating a PLC signal.
As one way, the power carrier signal sent by the socket may be acquired before the vehicle-mounted charger starts charging, that is, during the configuration stage of the charging parameters of the vehicle-mounted charger. Optionally, in the charging process of the vehicle-mounted charger, the power carrier signal sent by the socket may be obtained in real time, so as to obtain the maximum power supply parameter of the socket in real time.
Step S220: the power carrier signal is identified to obtain maximum power supply parameters for the receptacle.
The vehicle-mounted charger can be provided with a PLC module, and the PLC module can identify a PLC signal to obtain the maximum power supply parameter of the socket after acquiring a power carrier signal. The PLC communication can transmit a signal by a carrier method using a power line without laying a dedicated cable again, and can perform communication using an original power line when a vehicle is charged, and can realize stable communication even without a network.
Step S230: and determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter.
Step S240: and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
The vehicle charging control method provided in this embodiment may include the same or similar steps as those in the above embodiments, and for the execution of the same or similar steps, reference may be made to the foregoing description, and the description is not repeated.
According to the embodiment of the application, when the vehicle-mounted charger is successfully connected with the charging gun, a power carrier signal sent by the socket is acquired; identifying a power carrier signal to obtain a maximum power supply parameter of the socket; determining a target charging parameter of a vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. The power line carrier communication is carried out between the vehicle-mounted charger and the socket through the power line, reliable and stable communication can be carried out under the condition that network signals are weak or no signals exist, the maximum power supply parameters of the socket are obtained based on original power line transmission information during charging under the condition that no circuit is added, and then the charging parameters of the vehicle-mounted charger are adjusted, so that safe charging can be achieved when the vehicle uses the sockets with different maximum power supply parameters.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method of controlling charging of a vehicle according to an embodiment of the present application. As will be explained in detail below with respect to the embodiment shown in fig. 3, the method may specifically include the following steps:
step S310: and when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket.
Wherein the maximum power supply parameter may comprise a maximum power supply of the socket.
Step S320: and acquiring the maximum power supply power of the charging gun.
The vehicle-mounted charger can obtain PWM signals sent by the charging gun, wherein the PWM signals are used for representing the power supply capacity of the charging gun, and the PWM signals with different duty ratios correspond to different power supply capacities of the charging gun. Specifically, the vehicle-mounted charger may obtain the maximum power supply power of the charging gun by detecting a PWM duty signal of the CP port of the portable charging gun. Alternatively, the maximum supply current of the charging gun may also be obtained by a PWM signal.
Step S330: and determining the maximum power supply power of the power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun.
The power supply line is a line on the side of the power supply equipment consisting of the socket and the charging gun, and current sequentially passes through the socket and the charging gun and then is input into the vehicle-mounted charger. Therefore, the maximum power supply of the power supply line can be determined after the maximum power supply of the socket and the maximum power supply of the charging gun are acquired. Alternatively, the maximum power of the power supply line or the like may also be determined according to the maximum power supply current of the outlet or the charging gun.
In some embodiments, if the maximum power supply of the outlet is less than the maximum power supply of the charging gun, determining the maximum power supply of the outlet as the maximum power supply of the power supply line; and if the maximum power supply power of the socket is larger than or equal to the maximum power supply power of the charging gun, determining the maximum power supply power of the charging gun as the maximum power supply power of the power supply line.
Step S340: and determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line.
The maximum charging power is used for limiting the power of the vehicle-mounted charger when the vehicle-mounted charger charges the battery. It can be understood that, when the vehicle-mounted charger outputs the input alternating current as the direct current, although there is a conversion relationship between the input alternating current and the output direct current, the input power and the output power are the same. Therefore, the maximum charging power of the vehicle-mounted charger can be determined based on the maximum power of the power supply line. Optionally, the maximum charging power may be the maximum input power of the vehicle-mounted charger, and may also be the output power of the vehicle-mounted charger.
Due to the portable charging guns currently used for electric vehicles, the maximum power is generally fixed, for example, the maximum charging current of 8A, 10A, 13A, 16A, 32A and the like. For a portable charging gun, less power is adjustable, less support is adjustable, and only two types of adjustable power are supported, so that the flexibility is poor; and such adjustable portable charging guns tend to be more expensive. Due to this non-adjustable characteristic, the charging gun may become unsafe or even unusable in some application scenarios. In some emergency situations, such as insufficient vehicle endurance, when the power line and the socket interface do not meet the safety requirements of the current portable charging gun in the temporarily found charging place, the charging gun is very dangerous to use and even cannot be used due to overheating faults.
Therefore, when the portable charging gun is used for charging, the target charging parameters of the vehicle-mounted charger can be determined by acquiring the maximum power supply power of the socket and the charging gun, namely the maximum charging power is limited, so that the safety of the power supply equipment side is improved. Carry out power control through on-vehicle machine that charges, can avoid carrying out the cost-push of adjusting to the rifle that charges, can be applicable to the rifle that charges of different brands, different power. In addition, the maximum power of the vehicle-mounted charger can be automatically obtained according to the maximum power of the power supply line, so that the vehicle-mounted charger is adjusted to limit the power of the whole power supply line, a user does not need to perform complex operation, and the risk caused by the fact that the power of the charging gun is adjusted due to negligence of forgetting of the user can be avoided.
Step S350: and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
The vehicle charging control method provided in this embodiment may include the same or similar steps as those in the above embodiments, and for the execution of the same or similar steps, reference may be made to the foregoing description, and the description is not repeated.
According to the embodiment of the application, when the vehicle-mounted charger is successfully connected with the charging gun, the maximum power supply parameter of the socket is obtained; acquiring the maximum power supply power of a charging gun; determining the maximum power supply power of a power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun; determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line, wherein the maximum charging power is used for limiting the power of the vehicle-mounted charger when the vehicle-mounted charger charges a battery; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. Because the power supply capacity of the power supply line outside the automobile is influenced by the charging gun and the socket, the power supply capacity of the power supply line can be more accurately obtained by obtaining the maximum power supply power of the charging gun, and then the maximum charging power of the vehicle-mounted charger in the current power supply line can be more accurately determined, so that better charging is realized. And because the vehicle-mounted charger can continuously adjust the power, the charging efficiency can be improved while the charging safety is ensured under different use scenes and power supply lines.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method of controlling charging of a vehicle according to an embodiment of the present application. As will be explained in detail below with respect to the embodiment shown in fig. 4, the method may specifically include the following steps:
step S410: and when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket.
Step S420: and acquiring the maximum power supply power of the charging gun.
Step S430: and determining the maximum power supply power of the power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun.
Step S440: and determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line.
Step S450: and determining the maximum output current of the vehicle-mounted charger according to the maximum charging power of the vehicle-mounted charger.
The vehicle-mounted charger can convert alternating current input by the charging gun into direct current for charging the battery in the charging process, and the maximum output current of the vehicle-mounted charger can be determined according to the maximum charging power. The maximum output current can be used for limiting the direct current output to the battery by the vehicle-mounted charger.
In some embodiments, step S450 may further include steps S451 to S453. Referring to fig. 5, fig. 5 is a flowchart illustrating step S450 in fig. 4 according to an exemplary embodiment of the present application, where after step S450, the method may further include:
step S451: and acquiring battery information sent by a battery management system.
The Battery Management System (BMS) can be used for monitoring the service state of the battery all the time and sending a charging parameter message containing battery information to the vehicle-mounted charger. The battery information may include a state of charge (SOC), a voltage requirement, a current requirement, a charging mode, a battery temperature, and the like. The battery information may be transmitted from the BMS to the vehicle-mounted charger at the time of charge initialization or may be transmitted to the vehicle-mounted charger in real time during the charging process.
Step S452: and determining the reference output current of the vehicle-mounted charger according to the battery information.
The vehicle-mounted charger may determine a reference output current of the vehicle-mounted charger by analyzing the acquired battery information, where the reference output current may be a direct current limit output by the vehicle-mounted charger when the vehicle-mounted charger charges the battery, that is, a maximum output current that the vehicle-mounted charger can output determined according to the battery information.
As one way, the reference output current of the onboard charger may be determined based on a state of power (SOP) algorithm that trades off multiple factors of battery information. It can be understood that the reference output current may be determined by the vehicle-mounted charger according to the battery information sent by the BMS, or the BMS may obtain the reference output current according to the battery information and then send the reference output current to the vehicle-mounted charger.
Step S453: and if the reference output current is smaller than the maximum output current, updating the maximum output current to the reference output current.
When the reference output current is less than the maximum output current, if charging is performed at the maximum output current, although the charging current can ensure that the charging line power supply device side is safe, the battery may be damaged by exceeding the input current required by the battery. Therefore, the maximum output current can be updated to the reference output current, thereby simultaneously realizing the safety of the power supply equipment input into the vehicle-mounted charger and the safety of the charging link output from the vehicle-mounted charger to the battery.
Step S460: and controlling the vehicle-mounted charger to charge the battery based on the maximum output current.
The maximum output current can be the current output to the battery equipment by the vehicle-mounted charger, and the output current of the vehicle-mounted charger can be controlled not to be larger than the maximum output current in the charging process, so that the current output by a socket and a charging gun on a power supply line can be limited by limiting the output current of the vehicle-mounted charger, the actual working power on the power supply line is not larger than the maximum power supply power on the power supply line, and the power on the whole charging link is limited to be kept in a safe range.
The vehicle charging control method provided in this embodiment may include the same or similar steps as those in the above embodiments, and for the execution of the same or similar steps, reference may be made to the foregoing description, and the description is not repeated.
According to the embodiment of the application, when the vehicle-mounted charger is successfully connected with the charging gun, the maximum power supply parameter of the socket is obtained; acquiring the maximum power supply power of a charging gun; determining the maximum power supply power of a power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun; determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line, wherein the maximum charging power is used for limiting the power of the vehicle-mounted charger when the vehicle-mounted charger charges a battery; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. Because the power supply capacity of the power supply line outside the automobile is influenced by the charging gun and the socket, the power supply capacity of the power supply line can be more accurately obtained by obtaining the maximum power supply power of the charging gun, and then the maximum charging power of the vehicle-mounted charger in the current power supply line can be more accurately determined, so that better charging is realized, and the charging efficiency is improved while the charging safety is ensured.
Referring to fig. 6, fig. 6 is a block diagram of a vehicle charging control apparatus 500 according to an embodiment of the present application, where the apparatus is configured to charge a vehicle, the vehicle includes a vehicle-mounted charger and a battery, the vehicle-mounted charger is configured to charge the battery, a charging gun is respectively connected to a socket and the vehicle-mounted charger to supply power to the vehicle-mounted charger, and the vehicle charging control apparatus 500 includes:
a socket parameter obtaining module 510, configured to obtain a maximum power supply parameter of the socket when the vehicle-mounted charger is successfully connected to the charging gun.
Further, when the vehicle-mounted charger is successfully connected to the charging gun, the vehicle-mounted charger and the socket establish power carrier communication based on a power line, and the socket parameter obtaining module 510 may include a signal obtaining sub-module and a signal identifying sub-module, where:
the signal acquisition module is used for acquiring a power carrier signal sent by the socket, wherein the power carrier signal is a signal generated by the socket according to the maximum power supply parameter of the socket.
A signal identification submodule for identifying the power carrier signal to obtain the maximum power supply parameter of the receptacle.
A charging parameter determining module 520, configured to determine a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter.
Further, the charging parameter determination module 520 may include a charging gun power obtaining sub-module, a power supply line power determination sub-module, and a maximum charging power determination sub-module. Wherein the content of the first and second substances,
and the charging gun power acquisition submodule is used for acquiring the maximum power supply power of the charging gun.
The power supply line power determining submodule is used for determining the maximum power supply power of a power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun.
Further, the power supply line power determination submodule may include a first determination unit and a second determination unit, wherein:
the first determining unit is configured to determine the maximum power supply power of the socket as the maximum power supply power of the power supply line if the maximum power supply power of the socket is smaller than the maximum power supply power of the charging gun.
The second determining unit is configured to determine the maximum power supply power of the charging gun as the maximum power supply power of the power supply line if the maximum power supply power of the socket is greater than or equal to the maximum power supply power of the charging gun.
The maximum charging power determining submodule is used for determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line, and the maximum charging power is used for limiting the power of the vehicle-mounted charger when the vehicle-mounted charger charges the battery.
And a charging control module 530, configured to control the vehicle-mounted charger to charge the battery based on the target charging parameter.
Further, the charging control module 530 may include a status information obtaining sub-module and a charging stopping sub-module, wherein:
the state information acquisition submodule is used for acquiring state information of the socket in real time in the charging process, and the state information comprises at least one of real-time output current information and temperature information.
And the charging stopping submodule is used for controlling the vehicle-mounted charger to stop charging if the state of the socket is judged to be abnormal according to the state information.
Further, the charging control module 530 may include a maximum current determination sub-module and a charging control sub-module, wherein:
the maximum current determination submodule is used for determining the maximum output current of the vehicle-mounted charger according to the maximum charging power of the vehicle-mounted charger, and the maximum output current is used for limiting the direct current output by the vehicle-mounted charger when the vehicle-mounted charger charges the battery;
and the charging control submodule is used for controlling the vehicle-mounted charger to charge the battery based on the maximum output current.
Further, the vehicle includes a battery management system, and after determining the maximum output current of the vehicle-mounted charger according to the maximum charging power of the vehicle-mounted charger, the charging control submodule may further include a battery information obtaining unit, a reference current determining unit, and a maximum current updating unit, where:
the battery information acquisition unit is used for acquiring the battery information sent by the battery management system, wherein the socket is used for supplying power to the charging gun.
And the reference current determining unit is used for determining the reference output current of the vehicle-mounted charger according to the battery information.
The maximum current updating unit is configured to update the maximum output current to the reference output current if the reference output current is smaller than the maximum output current.
It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working process of the vehicle charging control apparatus 500 described above may refer to the corresponding process in the foregoing embodiment of the vehicle charging control method, and will not be described herein again.
Referring to fig. 7, a block diagram of a vehicle 600 according to an embodiment of the present disclosure is shown. The vehicle 600 of the present application may include one or more of the following components: a processor 610, a memory 620, and one or more applications, wherein the one or more applications may be stored in the memory 620 and configured to be executed by the one or more processors 610, the one or more programs configured to perform the methods as described in the aforementioned method embodiments.
The processor 610 may include one or more processing cores. The processor 610 interfaces with various components within the vehicle 600 using various interfaces and wires to perform various functions of the vehicle 600 and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 620 and invoking data stored in the memory 620. Alternatively, the processor 610 may be implemented in hardware using at least one of Digital Signal Processing (DSP), field-programmable gate array (FPGA), and Programmable Logic Array (PLA). The processor 610 may integrate one or more of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing display content; the modem is used to handle wireless communications. It is understood that the modem may not be integrated into the processor 610, but may be implemented by a communication chip.
The memory 620 may include a Random Access Memory (RAM) or a read-only memory (ROM). The memory 620 may be used to store instructions, programs, code sets, or instruction sets. The memory 620 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like. The storage data area may also store data created during use of the vehicle 600 (e.g., phone books, audio-visual data, chat log data), and the like.
Referring to fig. 8, a block diagram of a computer-readable storage medium according to an embodiment of the present disclosure is shown. The computer-readable storage medium 700 has stored therein program code that can be invoked by a processor to perform the methods described in the method embodiments above.
The computer-readable storage medium 700 may be an electronic memory such as a flash memory, an electrically-erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a hard disk, or a ROM. Alternatively, the computer-readable storage medium 800 includes a non-volatile computer-readable storage medium. The computer readable storage medium 700 has storage space for a program medium 710 for performing any of the method steps of the method described above. The program code can be read from or written to one or more computer program products. The program medium 710 may be compressed, for example, in a suitable form.
To sum up, the embodiment of the application discloses a vehicle charging control method, a device, a system and a vehicle, the method is used for charging the vehicle, the vehicle comprises a vehicle-mounted charger and a battery, the vehicle-mounted charger is used for charging the battery, a charging gun is respectively connected with a socket and the vehicle-mounted charger and supplies power to the vehicle-mounted charger, and the method comprises the following steps: when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket, wherein the socket is used for supplying power to the charging gun; determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter; and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter. By acquiring the power supply capacity parameter of the socket and adjusting the charging parameter of the vehicle-mounted charger according to the power supply capacity parameter, the current power supply line can be protected, and the charging safety of the vehicle in different power line environments is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A vehicle charging control method is characterized by being used for charging a vehicle, wherein the vehicle comprises a vehicle-mounted charger and a battery, the vehicle-mounted charger is used for charging the battery, a charging gun is respectively connected with a socket and the vehicle-mounted charger and supplies power to the vehicle-mounted charger, and the method comprises the following steps:
when the vehicle-mounted charger is successfully connected with the charging gun, acquiring the maximum power supply parameter of the socket, wherein the socket is used for supplying power to the charging gun;
determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter;
and controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
2. The method according to claim 1, characterized in that when the vehicle-mounted charger is successfully connected with the charging gun, the vehicle-mounted charger and the socket establish power carrier communication based on a power line;
the acquiring of the maximum power supply parameter of the socket includes:
acquiring a power carrier signal sent by the socket, wherein the power carrier signal is a signal generated by the socket according to the maximum power supply parameter of the socket;
identifying the power carrier signal to obtain the maximum power supply parameter of the receptacle.
3. The method of claim 1, wherein the controlling the on-board charger to charge the battery based on the target charging parameter comprises:
acquiring state information of the socket in real time in a charging process, wherein the state information comprises at least one of real-time output current information and temperature information;
and if the abnormal state of the socket is judged according to the state information, controlling the vehicle-mounted charger to stop charging.
4. The method according to any one of claims 1 to 3, wherein the maximum power supply parameter comprises a maximum power supply, the target charging parameter comprises a maximum charging power, and the determining the target charging parameter of the onboard charger according to the maximum power supply parameter comprises:
acquiring the maximum power supply power of the charging gun;
determining the maximum power supply power of a power supply line according to the maximum power supply power of the socket and the maximum power supply power of the charging gun;
and determining the maximum charging power of the vehicle-mounted charger based on the maximum power supply power of the power supply line, wherein the maximum charging power is used for limiting the power of the vehicle-mounted charger when the battery is charged.
5. The method of claim 4, wherein determining a maximum charging power of a power supply line from the maximum supply power of the receptacle and the maximum supply power of the charging gun comprises:
determining the maximum power supply power of the socket as the maximum power supply power of the power supply line if the maximum power supply power of the socket is less than the maximum power supply power of the charging gun;
determining the maximum power supply power of the charging gun as the maximum power supply power of the power supply line if the maximum power supply power of the socket is greater than or equal to the maximum power supply power of the charging gun.
6. The method of claim 4, wherein the controlling the onboard charger to charge the battery based on the target charging parameter comprises:
determining the maximum output current of the vehicle-mounted charger according to the maximum charging power of the vehicle-mounted charger, wherein the maximum output current is used for limiting the direct current output by the vehicle-mounted charger when the vehicle-mounted charger charges the battery;
and controlling the vehicle-mounted charger to charge the battery based on the maximum output current.
7. The method of claim 6, wherein the vehicle comprises a battery management system, and after determining the maximum output current of the onboard charger according to the maximum power supply power of the power supply line, the method further comprises:
acquiring battery information sent by the battery management system;
determining the reference output current of the vehicle-mounted charger according to the battery information;
and if the reference output current is smaller than the maximum output current, updating the maximum output current to the reference output current.
8. The utility model provides a vehicle charge control device, its characterized in that for charging for the vehicle, the vehicle includes on-vehicle machine and the battery that charges, on-vehicle machine that charges is used for the battery charges, the rifle that charges respectively with the socket with on-vehicle machine that charges is connected, for on-vehicle machine that charges supplies power, the device includes:
the socket parameter acquisition module is used for acquiring the maximum power supply parameter of the socket when the vehicle-mounted charger is successfully connected with the charging gun, wherein the socket is used for supplying power to the charging gun;
the charging parameter determining module is used for determining a target charging parameter of the vehicle-mounted charger according to the maximum power supply parameter;
and the charging control module is used for controlling the vehicle-mounted charger to charge the battery based on the target charging parameter.
9. A vehicle, characterized by comprising:
one or more processors;
a memory;
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the vehicle charging control method of any of claims 1-7.
10. A computer-readable storage medium having stored therein program code that is invokable by a processor to perform the vehicle charge control method according to any one of claims 1 to 7.
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