Wireless charging method, vehicle charging equipment, vehicle and storage medium

Abstract

The invention discloses a wireless charging method, vehicle charging equipment, a vehicle and a storage medium, and relates to the technical field of wireless charging. The wireless charging method is applied to vehicle charging equipment, and comprises the following steps: identifying an indication message sent by a ground charging controller through a vehicle controller when a vehicle reaches a preset charging range, and determining the coupling degree of the vehicle controller and the ground charging controller based on the indication message; sending a wireless charging instruction to a battery management system through the vehicle controller under the condition that the coupling degree meets a preset coupling degree condition; a charging mode is updated based on the wireless charging instruction through the battery management system, the battery temperature and the battery charge state are determined, and charging limiting conditions are determined according to the battery temperature and the battery charge state; through the vehicle controller, the charging limiting condition and the charging mode are received, the vehicle is wirelessly charged based on the charging limiting condition and the wireless charging mode, and automatic wireless charging of the vehicle is achieved.

Description

Technical Field

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

[0002] Wireless Charging for Vehicles is a technology that achieves wireless power transmission through electromagnetic field coupling or electromagnetic wave transmission, without the need for traditional charging cables. Its application scenarios in the field of new energy vehicles are becoming increasingly widespread.

[0003] In existing technology, after parking, unmanned vehicles require human intervention to plug in the charging plug. This requires human intervention, requiring both the plug-in and the unplug after full charging, increasing operating costs. Therefore, achieving automatic charging for unmanned vehicles has become a pressing issue. Summary of the Invention

[0004] The present invention provides a wireless charging method, vehicle charging equipment, a vehicle and a storage medium to solve the problem in the prior art that unmanned vehicles cannot be automatically charged.

[0005] According to one aspect of the present invention, a wireless charging method is provided, wherein a vehicle charging device includes at least a vehicle controller and a battery management system, and the method includes:

[0006] When the vehicle reaches a preset charging range, the vehicle controller identifies an instruction message sent by the ground charge controller, and determines the coupling degree between the vehicle controller and the ground charge controller based on the instruction message;

[0007] sending, by the vehicle controller, a wireless charging instruction to a battery management system when the coupling degree satisfies a preset coupling degree condition;

[0008] updating, by the battery management system, a charging mode based on the wireless charging instruction, determining a battery temperature and a battery state of charge, and determining a charging restriction condition according to the battery temperature and the battery state of charge;

[0009] The vehicle controller receives the charging restriction condition and the charging mode, and wirelessly charges the vehicle based on the charging restriction condition and the wireless charging mode.

[0010] According to another aspect of the present invention, there is provided a vehicle charging device, the vehicle charging device comprising at least a vehicle controller and a battery management system;

[0011] The vehicle controller is configured to identify an instruction message sent by a ground charge controller when the vehicle reaches a preset charging range, and determine a coupling degree between the vehicle controller and the ground charge controller based on the instruction message;

[0012] The vehicle controller is configured to send a wireless charging instruction to a battery management system when the coupling degree satisfies a preset coupling degree condition;

[0013] the battery management system being configured to update a charging mode based on the wireless charging instruction, determine a battery temperature and a battery state of charge, and determine a charging restriction condition according to the battery temperature and the battery state of charge;

[0014] The vehicle controller is configured to receive the charging restriction condition and the charging mode, and perform wireless charging on the vehicle based on the charging restriction condition and the wireless charging mode.

[0015] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement a wireless charging method according to any embodiment of the present invention when executed.

[0016] The technical solution of the embodiment of the present invention is to use the vehicle controller to identify the indication message sent by the ground charging controller when the vehicle reaches the preset charging range, determine the coupling degree between the vehicle controller and the ground charging controller based on the indication message, and send a wireless charging instruction to the battery management system through the vehicle controller when the coupling degree meets the preset coupling degree condition. The battery management system updates the charging mode based on the wireless charging instruction, determines the battery temperature and battery state of charge, and determines the charging restriction conditions according to the battery temperature and battery state of charge. The charging restriction conditions and charging mode are received through the vehicle controller, and the vehicle is wirelessly charged based on the charging restriction conditions and the wireless charging mode, thereby realizing automatic wireless charging of the vehicle, avoiding the problem of human intervention for charging after the unmanned vehicle is parked, and reducing customer operating costs.

[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a flow chart of a wireless charging method provided according to the first embodiment of the present invention;

[0020] Figure 2 is a structural diagram of the relationship between a wireless charging system and a vehicle provided according to the first embodiment of the present invention;

[0021] Figure 3 This is a flow chart of a wireless charging method provided according to the second embodiment of the present invention;

[0022] Figure 4 This is a flow chart of a wireless charging method provided according to the third embodiment of the present invention;

[0023] Figure 5 This is a structural diagram of a vehicle charging device provided according to a fourth embodiment of the present invention;

[0024] Figure 6 is a structural diagram of another vehicle charging system provided according to a fourth embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a vehicle that implements a wireless charging method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Example 1

[0029] Figure 1This is a flow chart of a wireless charging method provided according to the first embodiment of the present invention. This embodiment is applicable to the case of automatic wireless charging of vehicles (such as unmanned vehicles). The method can be executed by a vehicle charging system. The vehicle charging device includes at least a vehicle controller and a battery management system. The vehicle charging device can be installed in the vehicle. Figure 1 As shown, the method includes:

[0030] S110. When the vehicle reaches a preset charging range, the vehicle controller identifies an instruction message sent by the ground charging controller, and determines a coupling degree between the vehicle controller and the ground charging controller based on the instruction message.

[0031] Among them, the vehicle controller can be used to coordinate and manage the operation of various systems of the vehicle. In the actual operation process, the vehicle controller may include a central domain controller and an on-board charging controller. Among them, the central domain controller, that is, the vehicle CDCU (Central Domain Controller), can be responsible for integrating and managing the information and control logic of multiple subsystems. The on-board charging controller can be a receiving controller for receiving signals from the ground charging controller. The on-board charging controller and the receiving ground charging controller can form a wireless charging system for wireless charging of vehicles. Generally speaking, the ground charging controller can be kept on for a long time to facilitate the vehicle to automatically connect to the wireless charger. In one embodiment, Figure 2 1 is a structural diagram showing the relationship between a wireless charging system and a vehicle according to the first embodiment of the present invention. Figure 2 As shown, the wireless charging system includes an onboard charging controller and a ground-based charging controller. The onboard charging controller includes an onboard receiving controller and receiving coil, while the ground-based charging controller includes a ground-based transmitting controller and transmitting coil. The onboard charging controller is connected to the vehicle's power battery. Generally, the onboard charging controller can be installed inside the vehicle.

[0032] The preset charging range refers to a pre-set range used to determine whether to enter the wireless charging process. In actual operation, the preset charging range can be customized by business personnel based on the functions of the wireless charging system or the wireless charging requirements. The indication message refers to a message used to indicate that the vehicle has reached the preset charging range. The indication message can be generated by the ground charging controller. The coupling degree refers to the degree of association between the on-board charging controller and the ground charging controller. It can be used to indicate the degree of error between the vehicle's parking position and the target position. The greater the coupling degree, the smaller the error degree. It can also be the degree of coupling between the receiving coil and the transmitting coil. The coupling degree can be automatically determined by the ground charging controller.

[0033] In an embodiment, the vehicle controller can identify an indication message from the ground charge controller when the vehicle reaches a preset charging range. If an indication message from the ground charge controller of the wireless charging system is identified, the coupling degree between the vehicle controller and the ground charge controller detected by the ground charge controller can be determined. In actual operation, when the vehicle reaches the preset charging range, the stimulus sent by the ground charge controller can wake up the on-board charge controller, which in turn powers up the entire vehicle to wake up the central domain controller and battery management system. The central domain controller executes the high-voltage process and begins to identify whether an indication message is present. If an indication message from the ground charge controller is identified, an instruction can be sent to the on-board charge controller to detect the coupling degree between the on-board charge controller and the ground charge controller, thereby determining the coupling degree between the on-board charge controller and the ground charge controller as the coupling degree between the vehicle controller and the ground charge controller.

[0034] S120 : Sending a wireless charging instruction to a battery management system via a vehicle controller when the coupling degree satisfies a preset coupling degree condition.

[0035] Among them, the Battery Management System (BMS) is a core component that is crucial in battery application scenarios. The battery management system can monitor the voltage, current, temperature, battery state of charge, SOH (State of Charge, SOC) and other parameters of each battery to provide a basis for management decisions. Among them, the preset coupling degree conditions include: the coupling degree is greater than the preset coupling degree threshold. The preset coupling degree threshold can be understood as a pre-set critical value for judging the coupling degree situation. For example, the preset coupling degree threshold may include but is not limited to 1 and 2. The wireless charging instruction refers to the instruction information used to instruct the battery management system to enter the wireless charging state. In actual operation, the wireless charging instruction can be in the form of a message.

[0036] In an embodiment, when the coupling degree is greater than a preset coupling degree threshold, a wireless charging instruction may be generated by the vehicle controller and sent to the battery management system. In actual operation, the wireless charging instruction may be executed by a central domain controller in the vehicle controller.

[0037] S130 , updating the charging mode based on the wireless charging instruction through the battery management system, determining the battery temperature and the battery state of charge, and determining the charging restriction condition according to the battery temperature and the battery state of charge.

[0038] Among them, the charging mode refers to the current charging form of the battery management system. For example, the charging mode may include but is not limited to wireless charging mode and disconnected. The battery state of charge is the core parameter used to measure the remaining battery power, usually expressed as a percentage. Charging restriction conditions refer to the conditions that control the charging process so that the charging voltage and current are always kept within a safe range. In actual operation, the charging restriction conditions may include the maximum charging voltage and the maximum charging current. The maximum charging voltage refers to the highest charging voltage that can be safely applied to the battery, and the maximum charging current refers to the maximum current allowed to pass through the battery during charging.

[0039] In an embodiment, the charging mode can be updated by the battery management system according to the wireless charging instruction. Generally speaking, the charging mode can be updated to the wireless charging mode. The battery temperature and the battery state of charge are detected, and the maximum limit charging voltage and the maximum limit charging current are determined as charging restriction conditions according to the battery temperature and the battery state of charge. In actual operation, the maximum limit charging voltage and the maximum limit charging current can be related to the battery temperature and the battery state of charge, and the maximum limit charging voltage and the maximum limit charging current can be determined according to the battery temperature and the battery state of charge by a specific calculation method; or alternatively, the relationship between the battery temperature and the battery state of charge and the maximum limit charging voltage and the maximum limit charging current can be pre-stored, and the corresponding maximum limit charging voltage and the maximum limit charging current can be extracted according to the battery temperature and the battery state of charge as the charging restriction conditions.

[0040] S140 : Receive, through a vehicle controller, a charging restriction condition and a charging mode, and wirelessly charge the vehicle based on the charging restriction condition and the wireless charging mode.

[0041] In an embodiment, the vehicle controller can receive charging restrictions and charging mode sent by the battery management system. When the charging mode is wireless charging mode, the output voltage and current meet the charging restrictions, and the vehicle is wirelessly charged. In actual operation, this can be executed by the onboard charging controller in the vehicle controller.

[0042] In an embodiment of the present invention, when the vehicle reaches a preset charging range, the vehicle controller identifies the indication message sent by the ground charging controller, determines the coupling degree between the vehicle controller and the ground charging controller based on the indication message, and sends a wireless charging instruction to the battery management system through the vehicle controller when the coupling degree meets the preset coupling degree condition. The battery management system updates the charging mode based on the wireless charging instruction, determines the battery temperature and the battery state of charge, determines the charging restriction conditions according to the battery temperature and the battery state of charge, receives the charging restriction conditions and the charging mode through the vehicle controller, and wirelessly charges the vehicle based on the charging restriction conditions and the wireless charging mode, thereby realizing automatic wireless charging of the vehicle, avoiding the problem of human intervention for charging after the unmanned vehicle is parked, and reducing customer operating costs.

[0043] In one embodiment, after receiving the charging restriction condition and the charging mode through the vehicle-mounted charging controller and wirelessly charging the vehicle based on the charging restriction condition and the wireless charging mode, the method further includes:

[0044] The battery management system determines the charging status after identifying the end-of-charging condition, feeds the charging status back to the central domain controller, and adjusts the maximum allowable charging voltage and maximum allowable charging current in the charging restriction conditions to zero;

[0045] Generate a charge stop instruction based on the charging status through the central domain controller and send the charge stop instruction to the battery management system;

[0046] Update the charging mode based on the charging stop instruction through the battery management system;

[0047] Through the on-board charging controller, when it is detected that the charging mode meets the preset conditions and / or there is a charger failure, wireless charging of the vehicle is stopped.

[0048] The charging status includes charging completion and charging failure. The preset condition may be that the charging mode is not connected.

[0049] In an embodiment, after the charging end condition is identified by the battery management system, the charging state can be determined according to the charging end condition. The charging state may include charging completion or charging failure, and the charging state will be fed back to the central domain controller, and the charging restriction conditions will be adjusted to adjust the maximum allowable charging voltage and the maximum allowable charging current to zero. After receiving the charging state, the central domain controller can generate a charging stop instruction to instruct the battery management system to stop charging, and send the charging stop instruction to the battery management system. After receiving the charging stop instruction, the battery management system updates the charging mode to disconnected to ensure the safety of the vehicle. Through the on-board charging controller, when it is detected that the charging mode is disconnected and / or there is a charger failure, the wireless charging of the vehicle is stopped, and the vehicle automatically stops charging, without the need for manual intervention to pull out the gun after full charge, thereby improving the user experience.

[0050] In one embodiment, before updating the charging mode based on the wireless charging instruction, determining the battery temperature and the battery state of charge, and determining the charging restriction condition according to the battery temperature and the battery state of charge through the battery management system, the method further includes:

[0051] Through the battery management system, the battery fault is detected, the power-on command sent by the central domain controller in the vehicle controller is received, and the closed state of the high-voltage relay is detected when the battery fault is not faulty and the power-on command is present;

[0052] Through the battery management system, when all closed states are closed, a wireless charging instruction sent by the battery management system is received.

[0053] The power-on instruction refers to instruction information generated by the central domain controller for instructing the battery management system to power on.

[0054] In an embodiment, the battery management system can detect battery failures and receive power-on commands from the central domain controller in the vehicle controller. If the battery failure is not a fault and a power-on command is received, the closed state of each high-voltage relay can be detected. If all relays are closed, wireless charging commands from the battery management system can be received, enabling data exchange between the battery management system and the central domain controller, ensuring safe charging of the unmanned vehicle.

[0055] Example 2

[0056] Figure 3 This is a flow chart of a wireless charging method provided according to the second embodiment of the present invention. This embodiment is based on the above embodiment to further optimize and expand, and can be combined with various optional technical solutions in the above embodiment. Figure 3 As shown, the method includes:

[0057] S210. When the vehicle reaches a preset charging range, the on-board charging controller in the vehicle controller receives an instruction message sent by the ground charging controller and sends the instruction message to the central domain controller in the vehicle controller.

[0058] In an embodiment, the onboard charging controller in the vehicle controller can receive an instruction message sent by the ground charging controller when the vehicle reaches a preset charging range. At the same time, the onboard charging controller can send the instruction message to the central domain controller in the vehicle controller.

[0059] S220. When it is determined that there is an indication message, the central domain controller extracts the coupling degree between the onboard charging controller and the ground charging controller determined by the onboard charging controller.

[0060] In an embodiment, when the indication message is identified, an instruction for detecting the coupling degree may be sent to the onboard charging controller to obtain the coupling degree between the onboard charging controller and the ground charging controller determined by the onboard charging controller.

[0061] S230. When it is determined that the coupling degree is greater than a preset coupling degree threshold, the central domain controller in the vehicle controller sends a wireless charging instruction to the battery management system.

[0062] S240 , using the battery management system, updating the charging mode to the wireless charging mode based on the wireless charging instruction, and collecting the battery temperature and battery state of charge.

[0063] In an embodiment, after the battery management system receives the wireless charging instruction, the battery management system can change the charging mode to the wireless charging mode, so that the battery management system enters the wireless charging state. The current battery temperature can be collected by the temperature sensor, and the battery state of charge can be collected by the battery management system.

[0064] S250. Determine, by the battery management system, a maximum allowable charging voltage and a maximum allowable charging current corresponding to the battery temperature and the battery state of charge in a preset mapping table based on the battery temperature and the battery state of charge, and use the maximum allowable charging voltage and the maximum allowable charging current as charging restriction conditions.

[0065] The preset mapping table is a pre-set table that describes the mapping relationship between battery temperature and battery state of charge, and the maximum allowable charging voltage and maximum allowable charging current. In actual operation, the maximum allowable charging voltage and maximum allowable charging current corresponding to each battery temperature and battery state of charge may be unique.

[0066] In an embodiment, the battery management system may match the maximum allowable charging voltage and the maximum allowable charging current associated with the battery temperature and the battery state of charge in a preset mapping table, and use the maximum allowable charging voltage and the maximum allowable charging current as charging restriction conditions.

[0067] S260: Receive charging restriction conditions and a charging mode through the vehicle-mounted controller, and wirelessly charge the vehicle based on the charging restriction conditions and the wireless charging mode.

[0068] In an embodiment of the present invention, when the vehicle reaches a preset charging range, the on-board charging controller in the vehicle controller receives an instruction message sent by the ground charging controller, and sends the instruction message to the central domain controller in the vehicle controller. When the central domain controller determines that there is an instruction message, it extracts the coupling degree between the on-board charging controller and the ground charging controller determined by the on-board charging controller. When the central domain controller in the vehicle controller determines that the coupling degree is greater than a preset coupling degree threshold, it sends a wireless charging instruction to the battery management system, thereby realizing automatic judgment on whether the vehicle meets the automatic charging conditions; and the battery management system updates the charging mode to the wireless charging mode based on the wireless charging instruction. In wireless charging mode, the battery temperature and battery state of charge are collected, and the maximum allowable charging voltage and the maximum allowable charging current corresponding to the battery temperature and the battery state of charge are determined in a preset mapping table through the battery management system based on the battery temperature and the battery state of charge, and the maximum allowable charging voltage and the maximum allowable charging current are used as charging restriction conditions. The charging restriction conditions and the charging mode are received through the vehicle charging controller, and the vehicle is wirelessly charged based on the charging restriction conditions and the wireless charging mode, so as to determine the maximum allowable charging voltage and the maximum allowable charging current according to the battery temperature and the battery state of charge, and ensure that the vehicle is automatically wirelessly charged within the maximum allowable charging voltage and the maximum allowable charging current.

[0069] Example 3

[0070] Figure 4 This is a flow chart of a wireless charging method provided according to the third embodiment of the present invention. This embodiment is based on the above embodiment and takes the vehicle CDCU as the central domain controller as an example to further illustrate a wireless charging method. Figure 4 As shown, the method includes:

[0071] Step 1. Turn on the vehicle key.

[0072] Step 2: Wake up the CDCU and BMS, and the wireless charging system wakes up and performs self-test.

[0073] Step 3: CDCU performs the high voltage process.

[0074] Step 4: CDCU sends a power-on instruction to BMS.

[0075] Step 5: The BMS wakes up for self-test and sends the self-test completion status.

[0076] Step 6: The BMS determines whether it has received the CDCU power-on command and there is no fault. If so, it executes step 7; if not, it returns to step 5.

[0077] Step 7: BMS executes the high-voltage process on the main circuit.

[0078] Step 8: The BMS determines whether all high-voltage relays are closed. If so, it goes to step 9; otherwise, it goes to step 10.

[0079] Step 9: BMS feeds back the relay status and enters discharge mode.

[0080] Step 10: Determine if high voltage application fails.

[0081] Step 11: CDCU enters high voltage state.

[0082] Step 12: The CDCU determines whether the wireless charging module message is recognized. If not, the process returns to step 11; if so, the process proceeds to step 13.

[0083] Step 13: The CDCU sends a command to the wireless charging system to start detecting the coupling degree.

[0084] Step 14: The wireless charging system determines the coupling degree and feeds back the coupling degree status.

[0085] Step 15: CDCU receives and determines whether the coupling state is greater than 1. If so, proceed to step 16; otherwise, return to step 11.

[0086] Step 16: CDCU sends wireless charging instructions to BMS.

[0087] Step 17: The BMS determines whether it has received a wireless charging instruction. If so, it proceeds to step 18; if not, it returns to step 9.

[0088] Step 18: The BMS feedback indicates that the charging mode is wireless charging mode and the charging gun connection status is wireless.

[0089] Step 19: The BMS determines whether the charging circuit relay is closed. If so, the process proceeds to step 20; if not, the process proceeds to step 21.

[0090] Step 20: The BMS sends the maximum allowable charging voltage and the maximum allowable charging current to the wireless charging system.

[0091] Step 21: The BMS waits for the charging circuit to close.

[0092] Step 22: The BMS sends a charging enable signal to the wireless charging system.

[0093] Step 23: The wireless charging system determines whether the charging enable signal and the maximum allowable charging voltage and the maximum allowable charging current are received. If so, the system proceeds to step 24; otherwise, the system proceeds to step 25.

[0094] Step 24: Output charging voltage and current.

[0095] Step 25: Do not output the charging voltage and current, and return to step 14.

[0096] Step 26: BMS corresponds to the charging mode and charging process.

[0097] Specifically, when the BMS detects that the actual charging current is greater than or equal to 2A, the charging status is fed back as charging.

[0098] Step 27: The BMS determines whether the conditions for exiting charging (including full charge or failure) are met. If so, the process proceeds to step 28; otherwise, the process returns to step 26.

[0099] Step 28: The BMS feedbacks the charging status as charging completion or fault, and sets the charging enable, charging allowable voltage, and current limit to 0.

[0100] Step 29: The CDCU determines whether the BMS charging status is complete or a charging error is detected. If so, the process proceeds to step 30; if not, the process returns to step 16.

[0101] Step 30: CDCU sends a wireless charging instruction to BMS, which is set to 0 and stops wireless charging.

[0102] Step 31 : The BMS determines whether it has received a stop charging instruction from the CDCU. If so, the process proceeds to step 32 ; otherwise, the process returns to step 28 .

[0103] Step 32: The BMS feedback indicates that the charging mode is not charging and the charging gun connection status is not connected.

[0104] Step 33: The wireless charging system determines whether the charging exit condition (BMS active stop or charger failure stop) is met. If so, the process proceeds to step 34; if not, the process returns to step 24.

[0105] Step 34: Stop charging and report the charging status and fault.

[0106] Among them, when the vehicle reaches the charging range, the wireless charging pile sends a small stimulus to wake up the wireless charging vehicle-mounted end. The awakened end: the charging range refers to the relative position of the center points of the transmitting and receiving coils, and the relative position is the maximum offset.

[0107] In this embodiment, the entire vehicle is equipped with a wireless charging system, combined with the upper-level autonomous driving system, and a corresponding wireless charging strategy is formulated to enable unmanned charging of the entire vehicle. Compared with unmanned charging with automatic plug-in charging, this is cheaper and has a higher charging success rate.

[0108] Example 4

[0109] Figure 5 FIG. 1 is a structural diagram of a vehicle charging device according to a fourth embodiment of the present invention. Figure 5 As shown, the vehicle charging system includes: a vehicle controller 51 and a battery management system 52 .

[0110] The vehicle controller 51 is configured to identify the instruction message sent by the ground charge controller and determine the coupling degree between the vehicle controller and the ground charge controller based on the instruction message;

[0111] The vehicle controller 51 is configured to send a wireless charging instruction to the battery management system when the coupling degree satisfies a preset coupling degree condition;

[0112] a battery management system 52 for updating a charging mode based on the wireless charging instruction, determining a battery temperature and a battery state of charge, and determining a charging restriction condition according to the battery temperature and the battery state of charge;

[0113] The vehicle controller 51 is configured to receive a charging restriction condition and a charging mode, and perform wireless charging on the vehicle based on the charging restriction condition and the wireless charging mode.

[0114] The technical solution of the embodiment of the present invention is to use the vehicle controller to identify the indication message sent by the ground charging controller when the vehicle reaches the preset charging range, determine the coupling degree between the vehicle controller and the ground charging controller based on the indication message, and send a wireless charging instruction to the battery management system through the vehicle controller when the coupling degree meets the preset coupling degree condition. The battery management system updates the charging mode based on the wireless charging instruction, determines the battery temperature and battery state of charge, and determines the charging restriction conditions according to the battery temperature and battery state of charge. The charging restriction conditions and charging mode are received through the vehicle controller, and the vehicle is wirelessly charged based on the charging restriction conditions and the wireless charging mode, thereby realizing automatic wireless charging of the vehicle, avoiding the problem of human intervention for charging after the unmanned vehicle is parked, and reducing customer operating costs.

[0115] In one embodiment, Figure 6 FIG. 1 is a structural diagram of another vehicle charging system provided according to the fourth embodiment of the present invention. Figure 6 As shown, the vehicle controller includes: a central domain controller 511 and an on-board charging controller 512.

[0116] In one embodiment, it further includes:

[0117] The battery management system 52 is configured to determine the charging state after identifying the charging end condition, feed the charging state back to the central domain controller, and adjust the maximum allowable charging voltage and maximum allowable charging current in the charging restriction condition to zero;

[0118] The central domain controller 511 is configured to generate a charge stop instruction based on the charging status and send the charge stop instruction to the battery management system; wherein the charging status includes charging completion and charging failure;

[0119] a battery management system 52 for updating a charging mode based on a charge stop instruction;

[0120] The on-board charging controller 512 is used to stop wireless charging of the vehicle when it is detected that the charging mode meets the preset conditions and / or there is a charger failure.

[0121] In one embodiment, it further includes:

[0122] The battery management system 52 is used to detect battery faults, receive a power-on command sent by the central domain controller in the vehicle controller, and detect the closed state of the high-voltage relay if the battery fault is not faulty and the power-on command exists;

[0123] The battery management system 52 is configured to receive a wireless charging instruction sent by the central domain controller when all closed states are closed.

[0124] In one embodiment, it further includes:

[0125] The onboard charging controller 512 in the vehicle controller 51 is configured to receive an instruction message sent by the ground charging controller when the vehicle reaches a preset charging range, and send the instruction message to the central domain controller in the vehicle controller;

[0126] The central domain controller 511 is configured to extract the coupling degree between the onboard charging controller and the ground charging controller determined by the onboard charging controller when it is determined that the indication message exists.

[0127] In one embodiment, it further includes:

[0128] The central domain controller 511 in the vehicle controller 51 is configured to send a wireless charging instruction to the battery management system when it is determined that the coupling degree is greater than a preset coupling degree threshold.

[0129] In one embodiment, it further includes:

[0130] A battery management system 52 is configured to update the charging mode to the wireless charging mode based on the wireless charging instruction and collect battery temperature and battery state of charge;

[0131] The battery management system 52 is used to determine the maximum allowable charging voltage and maximum allowable charging current corresponding to the battery temperature and the battery state of charge in a preset mapping table based on the battery temperature and the battery state of charge, and use the maximum allowable charging voltage and maximum allowable charging current as charging restriction conditions.

[0132] A wireless charging device provided in an embodiment of the present invention can execute a wireless charging method provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0133] Example 5

[0134] Figure 7 is a schematic diagram of the structure of a vehicle that implements a wireless charging method according to an embodiment of the present invention. The vehicle is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The vehicle may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0135] like Figure 7 As shown, vehicle 10 includes at least one processor 11 and memory, such as read-only memory (ROM) 12 and random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor, and processor 11 can perform various appropriate actions and processes based on the computer programs stored in ROM 12 or loaded from storage unit 18 into RAM 13. RAM 13 can also store various programs and data required for the operation of vehicle 10. Processor 11, ROM 12, and RAM 13 are interconnected via bus 14. An input / output (I / O) interface 15 is also connected to bus 14.

[0136] Various components in the vehicle 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the vehicle 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0137] The processor 11 can be various general-purpose and / or specialized processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a wireless charging method.

[0138] In some embodiments, a wireless charging method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on vehicle 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of a wireless charging method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform a wireless charging method in any other suitable manner (e.g., via firmware).

[0139] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system comprising at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0140] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0141] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0142] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0143] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0144] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0145] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0146] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A wireless charging method, characterized in that: Applied to a vehicle charging device, the vehicle charging device includes at least a vehicle controller and a battery management system, the method comprising: When the vehicle reaches a preset charging range, the vehicle controller identifies an instruction message sent by the ground charging controller, and determines the coupling degree between the vehicle controller and the ground charging controller based on the instruction message; sending, by the vehicle controller, a wireless charging instruction to a battery management system when the coupling degree satisfies a preset coupling degree condition; updating, by the battery management system, a charging mode based on the wireless charging instruction, determining a battery temperature and a battery state of charge, and determining a charging restriction condition according to the battery temperature and the battery state of charge; The vehicle controller receives the charging restriction condition and the charging mode, and wirelessly charges the vehicle based on the charging restriction condition and the wireless charging mode.

2. The method according to claim 1, characterized in that The vehicle controller includes: a central domain controller and an on-board charging controller.

3. The method according to claim 2, characterized in that After receiving the charging restriction condition and the charging mode through the vehicle controller and wirelessly charging the vehicle based on the charging restriction condition and the wireless charging mode, the method further includes: After identifying the charging end condition, the battery management system determines the charging state, feeds back the charging state to the central domain controller, and adjusts the maximum allowable charging voltage and the maximum allowable charging current in the charging restriction condition to zero; generating, by the central domain controller, a charge stop instruction based on the charging status, and sending the charge stop instruction to the battery management system; wherein the charging status includes charging completion and charging failure; updating the charging mode based on the charging stop instruction by the battery management system; The on-board charging controller stops wireless charging of the vehicle when it is detected that the charging mode meets a preset condition and / or a charger failure occurs.

4. The method according to claim 1, wherein Before updating the charging mode based on the wireless charging instruction, determining the battery temperature and the battery state of charge, and determining the charging restriction condition according to the battery temperature and the battery state of charge by the battery management system, the method further includes: Detecting a battery fault through the battery management system, receiving a power-on instruction sent by the central domain controller in the vehicle controller, and detecting a closed state of a high-voltage relay when the battery fault is not faulty and the power-on instruction is present; Through the battery management system, when the closed states are all closed, a wireless charging instruction sent by the central domain controller is received.

5. The method according to claim 1, wherein The step of identifying, by the vehicle controller, an instruction message sent by a ground charge controller when the vehicle reaches a preset charging range, and determining a degree of coupling between the vehicle controller and the ground charge controller based on the instruction message includes: When the vehicle reaches a preset charging range, the onboard charging controller in the vehicle controller receives an instruction message sent by the ground charging controller and sends the instruction message to the central domain controller in the vehicle controller; When it is determined that the indication message exists, the central domain controller extracts the coupling degree between the on-board charging controller and the ground charging controller determined by the on-board charging controller.

6. The method according to claim 1, characterized in that The method of sending a wireless charging instruction to a battery management system by the vehicle controller when the coupling degree satisfies a preset coupling degree condition includes: When it is determined that the coupling degree is greater than a preset coupling degree threshold, a wireless charging instruction is sent to a battery management system through the central domain controller in the vehicle controller.

7. The method according to claim 1, characterized in that The updating of the charging mode based on the wireless charging instruction, determining the battery temperature and the battery state of charge, and determining the charging restriction condition according to the battery temperature and the battery state of charge include: By means of the battery management system, the charging mode is updated to the wireless charging mode based on the wireless charging instruction, and the battery temperature and battery state of charge are collected; The battery management system determines the maximum allowable charging voltage and the maximum allowable charging current corresponding to the battery temperature and the battery state of charge in a preset mapping table based on the battery temperature and the battery state of charge, and uses the maximum allowable charging voltage and the maximum allowable charging current as charging restriction conditions.

8. A vehicle charging device, wherein the vehicle charging system comprises at least a vehicle controller and a battery management system; The vehicle controller is configured to identify an instruction message sent by a ground charge controller when the vehicle reaches a preset charging range, and determine a coupling degree between the vehicle controller and the ground charge controller based on the instruction message; The vehicle controller is configured to send a wireless charging instruction to a battery management system when the coupling degree satisfies a preset coupling degree condition; the battery management system being configured to update a charging mode based on the wireless charging instruction, determine a battery temperature and a battery state of charge, and determine a charging restriction condition according to the battery temperature and the battery state of charge; The vehicle controller is configured to receive the charging restriction condition and the charging mode, and perform wireless charging on the vehicle based on the charging restriction condition and the wireless charging mode.

9. A vehicle, characterized in that: The vehicle comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so as to enable the at least one processor to perform a wireless charging method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement a wireless charging method according to any one of claims 1 to 7 when executed.

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