Wireless charging device, method and system and vehicle

Abstract

The invention provides a wireless charging device, method and system and a vehicle, and the device comprises a wireless transmitting coil which is used for transmitting electric energy to a wireless charging receiving device; the wireless transmitting control module is connected with the wireless transmitting coil, and the wireless transmitting control module is used for detecting a quality factor value of the wireless transmitting coil and determining a power loss value; and the main control module is connected with the wireless transmitting control module and the wireless transmitting coil, and is used for determining that foreign matters exist in the charging area and controlling the wireless transmitting coil to stop transmitting electric energy when the quality factor value of the wireless transmitting coil is smaller than a first preset value and the power loss value is greater than or equal to a second preset value. Whether foreign matters exist in a charging area is determined through double detection of the quality factor value and the power loss value of the wireless transmitting coil, and the foreign matters can be rapidly and accurately detected; the sensitivity is high, and small-size metal foreign matters can be detected; and the foreign matter can be detected in time before the temperature rises due to the foreign matter.

Description

Technical Field

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

[0002] In-vehicle wireless charging solutions are generally based on the principle of electromagnetic induction. The alternating magnetic field generated by the transmitting coil integrated on the center console of the car causes an induced current to appear on the receiving coil, allowing the wireless charging device and the charging equipment to communicate and charge. During the wireless charging process, since the transmitting coil transmits energy through near-field induction, if the foreign object (Foreign Object Detection, FOD) inductively coupled to the transmitting coil is a foreign object that cannot be inductively charged (mostly metal), the foreign object will absorb part or all of the energy sent by the transmitting coil and cause heating, which may cause safety hazards in serious cases.

[0003] In the process of conceiving and implementing this application, the inventors found that there are at least the following problems: the accuracy of detecting foreign objects by Q value scanning in the existing solution is not high. Due to interference from environmental factors, the Q value detection method has a low sensitivity to non-metallic foreign objects and cannot accurately detect foreign objects, which may cause safety hazards in serious cases. It is crucial for the wireless charging device to accurately and quickly detect whether there is a foreign object in the effective transmission area of ​​its transmitting coil to ensure safety during the wireless charging process.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the invention

[0005] The present application provides a wireless charging device, method, system and vehicle to solve the problem that the foreign object detection method in the existing solution has low sensitivity and cannot accurately detect foreign objects.

[0006] In a first aspect, the present application provides a wireless charging device, comprising:

[0007] A wireless transmitting coil, used to transmit electrical energy to a wireless charging receiving device;

[0008] A wireless transmission control module, the wireless transmission control module is connected to the wireless transmission coil, and the wireless transmission control module is used to detect the quality factor value of the wireless transmission coil and determine the power loss value;

[0009] The main control module is connected to the wireless transmission control module and the wireless transmission coil, and is used to determine that there is a foreign object in the charging area when the quality factor value of the wireless transmission coil is less than a first preset value and the power loss value is greater than or equal to a second preset value, and control the wireless transmission coil to stop transmitting electrical energy.

[0010] In one embodiment, the main control module is further used to determine that there is a charging device in the charging area when the quality factor value of the wireless transmitting coil is greater than a third preset value, and use the wireless transmitting coil to charge the charging device;

[0011] The third preset value is greater than the first preset value.

[0012] In one of the embodiments, the main control module includes a protocol storage unit and an encryption and decryption authentication unit;

[0013] The encryption and decryption authentication unit is used to authenticate the charging device;

[0014] The protocol storage unit stores multiple charging protocols. The main control module is used to determine whether there is a target protocol corresponding to the identification code among the multiple charging protocols according to the identification code of the charging device. If the target protocol exists and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module, so that the wireless transmission control module controls the wireless transmission coil to transmit electrical energy according to the charging control instruction and the target protocol.

[0015] In one of the embodiments, the wireless transmitting coil includes an NFC coil and a wireless communication coil, and the wireless transmitting control module includes a coil gating unit;

[0016] The coil gating unit is connected to the main control module, the NFC coil and the wireless communication coil, and is used to control one of the NFC coil and the wireless communication coil to communicate with the charging device.

[0017] In one embodiment, there is at least one wireless communication coil; the coil gating unit includes a wireless communication coil gating unit and an NFC coil gating unit;

[0018] The main control module is used to generate an NFC control instruction according to the status information of the charging device, and the wireless communication coil gating unit is used to receive the NFC control instruction sent by the main control module, and control the NFC coil to communicate with the charging device according to the NFC control instruction;

[0019] The main control module is used to generate wireless communication control instructions according to the status information of the charging device. The wireless communication coil selection unit is used to receive the wireless communication control instructions sent by the main control module, and determine the target wireless communication coil from at least one wireless communication coil according to the wireless communication control instructions, and control the target wireless communication coil to communicate with the charging device.

[0020] In one of the embodiments, when there are multiple wireless communication coils, the wireless communication coil selection unit is used to cyclically select the multiple wireless communication coils according to the wireless communication control instruction, and determine the wireless communication coil with the largest signal strength as the target wireless communication coil, and control the target wireless communication coil to connect with the charging device.

[0021] In one of the embodiments, the wireless charging device further includes a power module, and the wireless transmission control module includes a wireless charging power unit;

[0022] The power module is connected to the main control module and the wireless transmission control module, and is used to supply power to the main control module and the wireless transmission control module;

[0023] The main control module is used to generate a control signal based on the charging protocol;

[0024] The wireless charging power unit is used to output corresponding power to the wireless transmitting coil according to the control signal of the main control module.

[0025] In one of the embodiments, the wireless transmission control module further includes a wireless charging driving unit, and the wireless charging driving unit is connected to the wireless charging power unit and the main control module;

[0026] The main control module is used to generate a control signal based on the charging protocol;

[0027] The wireless charging driving unit is used to generate a driving signal according to the control signal, and the driving signal is used to control the wireless charging power unit to output corresponding power.

[0028] In a second aspect, the present application further provides a wireless charging system, comprising a vehicle main control module and any of the above-mentioned wireless charging devices, wherein the vehicle main control module is connected to the wireless charging device; the wireless charging device comprises a first communication unit, and the vehicle main control module comprises a second communication unit.

[0029] The wireless charging device is used to obtain status information of the charging device and send the status information to the second communication unit through the first communication unit. The second communication unit is used to receive the status information, and the vehicle main control module starts the heat dissipation device according to the status information.

[0030] In a third aspect, the present application also provides a vehicle, comprising the wireless charging system as described above.

[0031] In a fourth aspect, the present application further provides a wireless charging method, the method comprising:

[0032] Obtaining the quality factor value of the wireless transmitting coil and determining the power loss value;

[0033] If the quality factor value of the wireless transmitting coil is less than the first preset value, and the power loss value of the wireless transmitting coil is greater than or equal to the second preset value, it is determined that there is a foreign object in the charging area, and the wireless transmitting coil is controlled to stop transmitting electrical energy.

[0034] In one embodiment, the method includes:

[0035] If the quality factor value of the wireless transmitting coil is greater than a third preset value, it is determined that there is a charging device in the charging area;

[0036] Use the wireless transmitting coil to charge the charging device.

[0037] In one embodiment, after charging the charging device using the wireless transmitting coil, the method further includes:

[0038] Get the status information of the charging device;

[0039] The wireless transmitting coil or the heat dissipation device is controlled according to the status information.

[0040] In one embodiment, the state information includes a power loss value; and controlling the wireless transmitting coil or the heat dissipation device according to the state information includes:

[0041] If the power loss value is greater than or equal to the second preset value, the wireless transmitting coil is controlled to stop transmitting electrical energy.

[0042] In one embodiment, the state information further includes temperature; and controlling the wireless transmitting coil or the heat dissipation device according to the state information further includes:

[0043] If the power loss value is less than the second preset value and the temperature is greater than or equal to the fourth preset value, the heat dissipation device is activated to dissipate heat from the charging device.

[0044] In one embodiment, before charging the charging device using the wireless transmitting coil, the method further includes:

[0045] Obtain the identification code of the charging device and authenticate the charging device;

[0046] Determine whether there is a target protocol corresponding to the identification code among the multiple charging protocols;

[0047] If there is a target protocol corresponding to the identification code and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electrical energy according to the target protocol.

[0048] In one embodiment, the method further comprises:

[0049] If there is no target protocol corresponding to the identification code, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electrical energy according to the wireless charging standard protocol.

[0050] In one embodiment, the wireless transmitting coil includes an NFC coil and a wireless communication coil; charging a charging device using the wireless transmitting coil includes:

[0051] One of the NFC coil and the wireless communication coil is controlled to charge the charging device.

[0052] In one embodiment, there is at least one wireless communication coil; and controlling one of the NFC coil and the wireless communication coil to charge the charging device comprises:

[0053] Generate NFC control instructions based on the status information of the charging device to control the NFC coil to communicate with the charging device; or

[0054] Generate wireless communication control instructions based on the status information of the charging device to control the wireless communication coil to communicate with the charging device.

[0055] In one of the embodiments, an NFC control instruction is generated according to the status information of the charging device to control the NFC coil to communicate with the charging device, specifically including: determining that the charging device has an NFC function;

[0056] Generate an NFC control instruction according to the NFC function of the charging device, and according to the NFC control instruction, turn on the NFC coil gating unit and establish NFC communication with the charging device;

[0057] Receive a charging request from a charging device and control the NFC coil to charge the charging device according to the charging request.

[0058] In one embodiment, a wireless communication control instruction is generated according to the status information of the charging device to control the wireless communication coil to communicate with the charging device, specifically including:

[0059] Confirming that the charging device has a wireless charging function, generating a wireless communication control instruction according to the status information of the charging device, and determining a target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction;

[0060] Control the target wireless communication coil to establish charging communication with the charging device;

[0061] Receive a charging request from a charging device and control the target wireless communication coil to charge the charging device according to the charging request.

[0062] In one embodiment, determining a target wireless communication coil from at least one wireless communication coil according to a wireless communication control instruction specifically includes:

[0063] Cyclic connection of the wireless communication coil according to the wireless communication control instruction;

[0064] The wireless communication coil with the greatest signal strength is confirmed to be the target wireless communication coil.

[0065] The present application provides a wireless charging device, including: a wireless transmitting coil, used to transmit electric energy to a wireless charging receiving device; a wireless transmitting control module, the wireless transmitting control module is connected to the wireless transmitting coil, and the wireless transmitting control module is used to detect the quality factor value of the wireless transmitting coil and determine the power loss value; a main control module, connected to the wireless transmitting control module and the wireless transmitting coil, used to determine that there is a foreign object in the charging area when the quality factor value of the wireless transmitting coil is less than a first preset value and the power loss value is greater than or equal to a second preset value, and control the wireless transmitting coil to stop transmitting electric energy. The present application determines whether there is a foreign object in the charging area by dual detection of detecting the quality factor value of the wireless transmitting coil and determining the power loss value, and can detect foreign objects quickly and accurately; it has high sensitivity and can detect small-sized metal foreign objects; secondly, it can detect foreign objects in time before the foreign objects cause the temperature to rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0067] Figure 1 A schematic diagram of the structure of a wireless charging device provided in one embodiment of the present application;

[0068] Figure 2 A schematic diagram of the structure of a wireless charging device provided in one embodiment of the present application;

[0069] Figure 3 A schematic diagram of the structure of a wireless charging panel provided in one embodiment of the present application;

[0070] Figure 4 A schematic diagram of the structure of a wireless charging panel provided in another embodiment of the present application;

[0071] Figure 5 A schematic diagram of the structure of a wireless charging device provided in one embodiment of the present application;

[0072] Figure 6 A schematic diagram of the structure of a wireless charging system provided in one embodiment of the present application;

[0073] Figure 7 A flowchart of a wireless charging method provided in one embodiment of the present application;

[0074] Figure 8 A flowchart of a wireless charging method is provided for an embodiment of the present application;

[0075] Fig. 9 A flowchart of a wireless charging method provided in accordance with an embodiment of the present application.

[0076] Reference numerals:

[0077] 110, main control module; 120, wireless transmission control module; 121, detection unit; 122, coil gating unit; 130, wireless transmission coil.

[0078] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0079] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0080] In the process of conceiving and implementing this application, the inventors found that there are at least the following problems: the accuracy of detecting foreign objects by Q value scanning in the existing solution is not high. Due to interference from environmental factors, the Q value detection method has a low sensitivity to non-metallic foreign objects and cannot accurately detect foreign objects, which may cause safety hazards in serious cases. It is crucial for the wireless charging device to accurately and quickly detect whether there is a foreign object in the effective transmission area of ​​its transmitting coil to ensure safety during the wireless charging process.

[0081] Based on the above problems, the present application provides a wireless charging device, such as Figure 1 As shown, Figure 1 A schematic diagram of the structure of a wireless charging device provided in an embodiment of the present application, the device includes:

[0082] A wireless transmitting coil, used to transmit electric energy to a wireless charging receiving device; a wireless transmitting control module, the wireless transmitting control module is connected to the wireless transmitting coil, and the wireless transmitting control module is used to detect the quality factor value of the wireless transmitting coil and determine the power loss value; a main control module, connected to the wireless transmitting control module and the wireless transmitting coil, used to determine that there is a foreign object in the charging area when the quality factor value of the wireless transmitting coil is less than a first preset value and the power loss value is greater than or equal to a second preset value, and control the wireless transmitting coil to stop transmitting electric energy.

[0083] The present application determines whether there is foreign matter in the charging area by dual detection of the quality factor value (Q value) and the power loss value of the wireless transmitting coil 130. Compared with the single Q value detection in the prior art, it can detect foreign matter quickly and accurately; it has high sensitivity and can detect small-sized metal foreign matter; secondly, by detecting the power loss value, foreign matter can be detected in time before the foreign matter causes the temperature to rise.

[0084] In one embodiment, the wireless transmission control module 120 includes a detection unit 121 for detecting a quality factor value of the wireless transmission coil 130 .

[0085] The present application uses the detection unit 121 to detect the quality factor value (Q value) and power loss value of the wireless transmitting coil 130 to determine whether there is a foreign object in the charging area. Compared with the single Q value detection in the prior art, it can detect foreign objects quickly and accurately; it has high sensitivity and can detect small-sized metal foreign objects; secondly, by detecting the power loss value, foreign objects can be detected in time before the foreign objects cause the temperature to rise.

[0086] In one embodiment, the main control module 110 is further used to determine that there is a charging device in the charging area when the quality factor value of the wireless transmitting coil 130 is greater than a third preset value, and use the wireless transmitting coil to charge the charging device; wherein the third preset value is greater than the first preset value.

[0087] The present application can accurately detect foreign objects and the presence of charging devices through the quality factor value of the wireless transmitting coil 130.

[0088] The charging area is the effective transmission range of the wireless transmitting coil 130, and can also be understood as the area of ​​the wireless charging panel. The quality factor value (i.e., Q value) detection of the wireless transmitting coil 130 is to identify the mobile phones, wearable devices, metal foreign objects, NFC (near field communication) cards, bank cards, etc. that the user may place in the charging area, and feedback to the terminal device after identification, such as feedback to the wireless charging device and the car machine, and the objects placed in the charging area of ​​the car wireless charger are detected through Q value feedback. It can be understood that the Q value of the NFC card < the Q value of the mobile phone < the Q value of the metal foreign object, and the type of objects placed in the charging area of ​​the wireless charging device is judged according to the size of the Q value of different objects.

[0089] The power loss value of the wireless transmitting coil 130 is detected. If there is a foreign object in the charging area, it will lead to an increase in eddy current loss, a change in magnetic field distribution, and possible electromagnetic interference. The power loss calculation includes the original resistance loss, magnetic loss, and eddy current loss caused by metal foreign objects. Therefore, it is also possible to determine whether there is a foreign object in the charging area by detecting the power loss value of the wireless transmitting coil 130.

[0090] Specifically, the second preset value is that the power loss value of the wireless transmitting coil 130 is greater than the second preset value, and the second preset value may be a range value, which is not limited in this application. The presence of foreign matter in the charging area will cause the temperature of the wireless charging device to rise. Therefore, when the quality factor value of the wireless transmitting coil 130 is less than the first preset value, and the power loss value of the wireless transmitting coil 130 is greater than the second preset value, it is considered that there is a foreign matter in the charging area, and the main control module 110 controls the wireless transmitting coil 130 to stop charging. If the wireless charging device has an alarm device and / or a display device, an alarm may be issued and / or the presence of foreign matter on the wireless transmitting coil 130 may be displayed on the display device, or the type of foreign matter on the charging area may be further displayed on the display device, which is not limited in this application. By detecting the quality factor value and the power loss value of the wireless transmitting coil 130 for dual identification, the items on the charging area can be detected quickly and accurately; secondly, by detecting the power loss value of the wireless transmitting coil 130, non-metallic foreign matter and small-sized metal foreign matter can be detected, with high sensitivity, and the detection of the power loss value can also detect the presence of foreign matter in time before the temperature rises.

[0091] The third preset value is greater than the first preset value. Since the quality factor values ​​of the foreign object and the charging device are different, it can be determined whether the charging area is a charging device or a foreign object by the quality factor value.

[0092] In one embodiment, the main control module 110 includes a protocol storage unit and an encryption and decryption authentication unit; the encryption and decryption authentication unit is used to authenticate the charging device; the protocol storage unit stores multiple charging protocols, and the main control module is used to determine whether there is a target protocol corresponding to the identification code in the multiple charging protocols according to the identification code of the charging device. If the target protocol exists and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module, so that the wireless transmission control module controls the wireless transmitting coil to transmit electrical energy according to the target protocol according to the charging control instruction.

[0093] The wireless charging device of the present application includes a protocol storage unit and an encryption and decryption authentication unit, which can be matched with charging devices of various charging protocols. At the same time, no additional dedicated hardware unit is required to support private wireless fast charging protocols. It has high scalability and strong compatibility. Secondly, the encryption and decryption authentication unit can complete the private wireless fast charging protocol and ensure the data security of the wireless charging device and the charging equipment.

[0094] Specifically, the protocol storage unit can support wireless fast charging of charging devices of different brands by writing multiple IP private fast charging protocols. At the same time, built-in public protocols such as QI (global universal wireless charging standard) wireless charging, NFC (Near Field Communication) wireless charging, and NFC communication meet different working modes. The encryption and decryption authentication unit is used to authenticate the user of the charging device in order to normally enable the private wireless fast charging protocol and vehicle power-on functions, ensuring the safety of wireless charging and the security of user data information.

[0095] In one embodiment, if Figure 2 As shown, Figure 2 A schematic diagram of the structure of a wireless charging device provided in one embodiment of the present application. The wireless transmitting coil includes an NFC coil and a wireless communication coil, and the wireless transmitting control module includes a coil gating unit; the coil gating unit is connected to the main control module, and the NFC coil and the wireless communication coil are connected, and is used to control one of the NFC coil and the wireless communication coil to communicate with the charging device.

[0096] Specifically, controlling one of the NFC coil and the wireless communication coil to communicate with the charging device includes one of the NFC coil and the wireless communication coil communicating or charging with the charging device.

[0097] In one of the embodiments, there is at least one wireless communication coil; the coil gating unit includes a wireless communication coil gating unit and an NFC coil gating unit; the main control module is used to generate an NFC control instruction according to the status information of the charging device, and the wireless communication coil gating unit is used to receive the NFC control instruction sent by the main control module, and control the NFC coil to be connected to the charging device according to the NFC control instruction; the main control module is used to generate a wireless communication control instruction according to the status information of the charging device, and the wireless communication coil gating unit is used to receive the wireless communication control instruction sent by the main control module, and determine the target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction, and control the target wireless communication coil to be connected to the charging device.

[0098] The wireless transmitting coil 130 in the present application can adapt to different types of charging devices and support NFC and wireless charging functions.

[0099] In one of the embodiments, when there are multiple wireless communication coils, the wireless communication coil selection unit is used to cyclically select the multiple wireless communication coils according to the wireless communication control instruction, and determine the wireless communication coil with the largest signal strength as the target wireless communication coil, and control the target wireless communication coil to connect with the charging device.

[0100] The wireless transmitting coil in this application can adapt to different types of charging devices and support NFC and wireless charging functions. Secondly, the setting of the position of the wireless communication coil can select the wireless communication coil with the largest signal strength according to the position of the receiving coil of the charging device, thereby improving the charging efficiency and high compatibility.

[0101] The wireless transmitting coil 130 of the present application includes an NFC coil and a wireless communication coil. The NFC coil and / or the wireless communication coil can be selected according to the type of charging device, supporting NFC charging and wireless charging, thereby establishing communication and / or transmitting energy, and has high compatibility.

[0102] like Figure 3 As shown, Figure 3 A schematic diagram of the structure of a wireless charging panel provided for an embodiment of the present application. The wireless transmitting coil 130 includes an NFC coil, a first wireless communication coil, a second wireless communication coil and a third wireless communication coil. The first wireless communication coil, the second wireless communication coil and the third wireless communication coil are respectively located at different positions of the wireless charging panel, and the first wireless communication coil, the second wireless communication coil and the third wireless communication coil may overlap or not overlap. The NFC coil can realize two functions, charging and communication. At the same time, only one coil enters the working mode, that is, only one coil performs energy transmission or communication functions, performs NFC charging or communication or performs wireless protocol charging or communication, and determines the working coil of the wireless transmitting coil 130 according to the instructions of the main control module 110. The wireless transmitting coil 130 in the present application can adapt to different types of charging devices, support NFC and wireless charging functions, and secondly, the setting of the wireless communication coil position can select the wireless communication coil with the largest signal strength according to the position of the receiving coil of the charging device, thereby improving the charging efficiency and having high compatibility.

[0103] like Figure 4 As shown, Figure 4 A schematic diagram of the structure of a wireless charging panel provided in another embodiment of the present application. The wireless charging panel includes a wireless transmitting coil 130, an air outlet and heat dissipation port, a wireless charging device stopper port, and an NFC small device stopper port, wherein the wireless transmitting coil 130 includes at least one wireless communication coil and an NFC coil. Figure 4In the provided embodiment, there are a total of six wireless communication coils, which are grouped in groups of three to form a wireless dual charging solution with switchable working coils. There are two air outlets and heat dissipation vents, which are arranged below each group of wireless charging panels. The wind direction can cover the entire contact surface of the charging device upward, cool the charging device during the charging process, and improve the charging efficiency. The wireless charging panel is a flat panel for placing or fixing the charging device. The limit port of the wireless charging device can prevent the charging device being charged from sliding from one side panel to the other side panel or staying between the two side panels, which plays a role in limiting or fixing the charging device and avoiding movement during charging that affects the charging efficiency. The NFC small device convex stop is placed above one side of the wireless charging panel, which is used to fix or limit a small charging device with NFC function, so that it can stably complete the NFC wireless charging and communication process. Figure 4 The convex stop position is the preferred convex stop position, which coincides with the convex height and position of the camera module behind the charging device. It improves the heat dissipation efficiency without reducing the charging stability of the device and also plays a role in fixing the limit.

[0104] The NFC coil is placed above the wireless charging panel on one side and is used for communication and charging of charging devices with NFC function. In addition, when the wireless charging device is on the vehicle, the NFC coil can also be used by the charging device to verify the owner's information to complete the vehicle power-on or connect to the vehicle's main control Bluetooth through the NFC auxiliary charging device.

[0105] In one embodiment, if Figure 5 As shown, Figure 5 A schematic diagram of the structure of a wireless charging device provided in an embodiment of the present application. The coil gating unit 122 includes a wireless communication coil gating unit and an NFC coil gating unit;

[0106] The wireless communication coil gating unit is used to receive the NFC control instruction of the main control module 110 and gating the NFC coil according to the NFC control instruction;

[0107] The wireless communication coil selection unit is used to receive the wireless communication control instruction of the main control module 110, cyclically connect the wireless communication coil according to the wireless communication control instruction, and select the wireless communication coil with the largest signal strength.

[0108] The coil selection unit 122 in the present application selects the NFC coil and the wireless communication coil according to the type of charging device, and is compatible with multiple types of charging devices; secondly, at least one wireless communication coil is set, and the wireless charging device can select the wireless communication coil with the largest signal strength according to the location of the charging device, so that the receiving coil of the charging device is matched with the wireless communication coil, thereby improving the charging efficiency.

[0109] Specifically, the main control module 110 will turn on the NFC coil and the wireless communication coil in turn to determine the type of charging device. If the charging device is an NFC device, the main control module 110 will issue an NFC control instruction to turn on the NFC coil. If the feedback information of the charging device is a request for charging, the main control module 110 will select the low impedance circuit, at which time the Q value of the energy transmission circuit increases, and the charging efficiency is improved; if the feedback information of the charging device is communication, the high impedance circuit will be selected, at which time the Q value of the energy transmission circuit decreases, and the communication efficiency is improved; if the charging device is a wireless charging device, the main control module 110 will issue a wireless communication control instruction, if there are multiple wireless communication coils, turn on the wireless communication coils in turn, confirm the wireless communication coil with the strongest signal strength, and use the wireless communication coil with the strongest signal strength to transmit energy to the charging device; if the charging device is a combination of NFC and wireless charging, the main control module 110 will first turn on the NFC coil, process the short interactive NFC communication, complete the authentication or activation operation, and then turn on the wireless communication coil. Through the wireless communication coil, a long interaction can be achieved, and a wireless charging function with higher efficiency energy transmission can be achieved.

[0110] In one embodiment, the wireless charging device also includes a power supply module, and the wireless transmission control module 120 includes a wireless charging power unit; the power supply module is connected to the main control module 110 and the wireless transmission control module 120, and is used to supply power to the main control module 110 and the wireless transmission control module 120; the main control module is used to generate a control signal based on the charging protocol; the wireless charging power unit is used to output corresponding power to the wireless transmitting coil according to the control signal of the main control module.

[0111] In one of the embodiments, the wireless transmission control module also includes a wireless charging drive unit, which is connected to the wireless charging power unit and the main control module; the main control module is used to generate a control signal based on the charging protocol; the wireless charging drive unit is used to generate a drive signal according to the control signal, and the drive signal is used to control the wireless charging power unit to output corresponding power.

[0112] In the present application, the power module provides power to the wireless transmission control module 120 and the main control module 110 , and the wireless charging power unit controls the wireless transmission coil 130 to stop transmitting energy and outputs power to the wireless transmission coil 130 .

[0113] The present application also provides a wireless charging system, including a vehicle main control module and any of the above-mentioned wireless charging devices, the vehicle main control module is connected to the wireless charging device; the wireless charging device includes a first communication unit, the vehicle main control module includes a second communication unit, the wireless charging device is used to obtain status information of the charging device, and send the status information to the second communication unit through the first communication unit, the second communication unit is used to receive the status information, and the vehicle main control module starts the heat dissipation device according to the status information.

[0114] In one embodiment, the heat dissipation device includes an air conditioner and / or a fan.

[0115] In the present application, the vehicle main control module is connected to the wireless charging device. The vehicle main control module can control the opening of the heat dissipation device by receiving the feedback signal of the charging device, thereby assisting in reducing the temperature of the charging device and improving the charging efficiency of the wireless charging.

[0116] like Figure 6 As shown, Figure 6 A schematic diagram of the structure of a wireless charging system provided for one embodiment of the present application. The vehicle main control module includes: a CAN communication unit B and a Bluetooth communication unit A. The CAN communication unit B of the vehicle main control communicates with the CAN communication unit A of the main control module 110 in the wireless charging device to exchange Bluetooth pairing information, and then sends the matching information to the Bluetooth communication unit A to achieve fast Bluetooth pairing or switching of pairing objects. The CAN communication unit B and the CAN communication unit A can also communicate and exchange demodulated charging device status information. The vehicle main control module determines whether the vehicle compressor air conditioner intervenes in the work assistance and / or the cooling fan completes the heat dissipation based on the status information of the charging device. The Bluetooth communication unit A receives the Bluetooth pairing information sent by the CAN communication unit B in the charging device to complete the wireless connection with the Bluetooth communication unit B in the charging device.

[0117] Among them, the charging device includes: a Bluetooth communication unit B, a near-field communication unit B and a wireless charging unit. The pairing information of the Bluetooth communication unit B is input into the near-field communication unit A in the wireless charging device after the near-field communication unit B sends a carrier signal to the modulation and demodulation unit in the wireless charging device. The differential signal data of the charging device is analyzed by the near-field communication unit A and transmitted to the main control module 110, and then sent to the vehicle main control module through the CAN communication unit A of the main control module 110, so that the Bluetooth communication unit B handshakes and connects the Bluetooth communication unit A of the vehicle main control module to realize functions such as hands-free phone, music streaming, and data synchronization. The near-field communication unit B establishes NFC communication with the near-field communication unit A to realize functions such as NFC owner authentication vehicle power-on, Bluetooth pairing information auxiliary transmission and reception, and NFC device wireless charging and energy replenishment. The wireless charging unit establishes communication with the main control module 110 through a certain carrier frequency, and after the user verifies, the charging protocol to be executed is determined to start wireless charging of the charging device.

[0118] In one embodiment, the main control module 110 also includes a CAN communication unit A and a logic core and timer unit. The CAN communication unit A is used for data exchange between the main control module 110 and the vehicle main control module. During the heat dissipation process of wireless charging, the status information of the charging device is transmitted to the vehicle main control module through the near-field communication unit B of the charging device and the near-field communication unit A in the wireless transmission control module 120. When the temperature of the charging device exceeds the threshold, the vehicle main control module is notified to turn on the vehicle air-conditioning compressor to assist in cooling; during the Bluetooth interconnection process with the charging device, the pairing information transmitted by the near-field communication unit B of the charging device is sent to the vehicle main control module through the CAN communication unit. The logic core and timer unit are responsible for the processing of the receiving and sending information of the main control module 110 in the wireless charging device and the output configuration of the PWM control instruction. It outputs appropriate FAN_PWM signals, Vout_PWM signals, IP_Comu signals, Drive0_PWM signals, selection instruction signals, and verification information according to different working mode status information and protocol requirements. The FAN_PWM signal is obtained by configuring the logic core and the timer unit to output the PWM control wave of the temperature of the associated charging device by configuring the timer 1, and is used to control the speed of the cooling fan; the Vout_PWM signal is obtained by configuring the logic core and the timer unit to output the PWM control wave of the associated protocol voltage requirement by configuring the timer 2, and is used to control the synchronous buck-boost conversion unit to output a suitable voltage signal; the IP_Comu signal is a power IC mode control signal, which is used for the main control module 110 to issue constant current, constant voltage and other power control instructions to the wireless charging power unit. The Drive0_PWM signal is obtained by configuring the logic core and the timer unit to output the PWM control wave of the associated protocol power requirement by configuring the timer 3, and is used to control the wireless charging power unit to output a suitable AC signal.

[0119] The present application also provides a vehicle, comprising the above-mentioned wireless charging system.

[0120] The present application also provides a wireless charging method, such as Figure 7 As shown, Figure 7 This is a flowchart of a wireless charging method provided in an embodiment of the present application. The method comprises the following steps:

[0121] Step S102, obtaining a quality factor value of the wireless transmitting coil and determining a power loss value;

[0122] Specifically, the quality factor value (i.e., Q value) can provide feedback on the objects placed in the charging area of ​​the vehicle-mounted wireless charger. It is understandable that the Q value of the NFC card is less than the Q value of the mobile phone and less than the Q value of the metal foreign object. The type of object placed in the charging area of ​​the wireless charging device can be determined based on the Q value of different objects.

[0123] If there are foreign objects and charging equipment in the charging area, the power loss value of the wireless transmitting coil 130 will be different. When there are foreign objects in the charging area, the eddy current loss will increase, causing the wireless charging device to heat up. Therefore, the presence of foreign objects in the charging area can be determined by detecting the power loss value. The power loss value can be obtained by the difference between the transmission power of the wireless transmitting coil and the receiving power of the charging device.

[0124] Step S104: If the quality factor value of the wireless transmitting coil is less than the first preset value, and the power loss value of the wireless transmitting coil is greater than or equal to the second preset value, it is determined that there is a foreign object in the charging area, and the wireless transmitting coil is controlled to stop transmitting electrical energy.

[0125] Specifically, the second preset value is that the power loss value of the wireless transmitting coil 130 is greater than the second preset value. The second preset value can be a range value, which is not limited in this application. The presence of foreign matter in the charging area will cause the temperature of the wireless charging device to rise. Therefore, when the quality factor value of the wireless transmitting coil 130 is less than the first preset value, and the power loss value of the wireless transmitting coil 130 is greater than or equal to the second preset value, it is considered that there is a foreign matter in the charging area, and the main control module 110 controls the wireless transmitting coil 130 to stop charging.

[0126] The present application determines whether there is a foreign object on the wireless transmitting coil 130 by obtaining the quality factor value and the power loss value of the wireless transmitting coil 130 for dual detection. Compared with the single Q value detection in the prior art, the foreign object can be detected quickly and accurately; it has high sensitivity and can detect small-sized metal foreign objects; secondly, by detecting the power loss value, the foreign object can be detected in time before the foreign object causes the temperature to rise.

[0127] In one embodiment, if Figure 8 As shown, Figure 8 A flowchart of a wireless charging method is provided for an embodiment of the present application, and the method includes the following steps:

[0128] Step S802: if the quality factor value of the wireless transmitting coil is greater than a third preset value, it is determined that there is a charging device in the charging area;

[0129] Step S804: Use the wireless transmitting coil to charge the charging device.

[0130] Specifically, the third preset value is greater than the first preset value. If the quality factor value of the wireless transmitting coil 130 is greater than the third preset value, it can be understood that when the quality factor value of the wireless transmitting coil 130 is greater than the third preset value, there is a charging device in the charging area. If the quality factor value of the wireless transmitting coil is greater than the third preset value and greater than the first preset value, the wireless charging system is in a standby state.

[0131] The present application determines the presence of the charging device by obtaining the quality factor value of the wireless transmitting coil 130 , and the wireless charging apparatus and the charging device perform wireless charging according to the charging requirements of the charging device.

[0132] In one embodiment, after step S804, the method further includes the following steps:

[0133] Get the status information of the charging device;

[0134] The wireless transmitting coil or the heat dissipation device is controlled according to the status information.

[0135] In one embodiment, the state information includes a power loss value; and controlling the wireless transmitting coil or the heat dissipation device according to the state information includes:

[0136] If the power loss value is greater than or equal to the second preset value, the wireless transmitting coil is controlled to stop transmitting electrical energy.

[0137] In one embodiment, the state information further includes temperature; the wireless transmitting coil or the heat dissipation device is controlled according to the state information, and the method further includes:

[0138] If the power loss value is less than the second preset value and the temperature is greater than or equal to the fourth preset value, the heat dissipation device is activated to dissipate heat from the charging device.

[0139] Specifically, the power loss between the wireless transmitting coil 130 and the wireless receiving coil of the charging device is calculated. The power loss between the wireless transmitting coil 130 and the wireless receiving coil mainly involves transmission efficiency, coupling coefficient, coil resistance loss, magnetic loss, etc.

[0140] In one embodiment, the method further comprises:

[0141] If the power loss value is greater than the second preset value, it is determined that there is a foreign object or abnormal heating between the wireless transmitting coil 130 and the charging device; and the wireless charging is stopped.

[0142] Specifically, if the power loss value is greater than the second preset value, that is, when the power loss value is greater than the second preset value, it is determined that there is a foreign object or abnormal heating between the wireless transmitting coil 130 and the charging device, and the main control module 110 controls the wireless transmitting coil 130 to stop charging. The second preset value is determined according to actual conditions and is not limited in this application.

[0143] When the charging device is wirelessly charging, the present application calculates the power loss value of wireless charging, that is, the difference between the power transmitted by the wireless transmitting coil 130 and the power received by the charging device, and determines the presence of foreign matter or abnormal heating between the wireless transmitting coil 130 and the charging device based on the comparison between the power loss value and the second preset value. The foreign matter or abnormal heating can be detected in time to protect the safety of the charging device.

[0144] Specifically, the status information of the charging device is communicated with the wireless charging device through the near field communication unit. If the temperature of the charging device is greater than or equal to the fourth preset value, the temperature of the charging device rises during the charging process, and the main control module 110 of the wireless charging device notifies the vehicle main control module to start the fan or air conditioner to cool down, thereby improving the wireless charging efficiency. The fourth preset value can be determined according to actual conditions. For example, the fourth preset condition can be that the temperature of the charging device is greater than or equal to 37 degrees Celsius, and the vehicle main control module starts the fan or the vehicle air conditioner to cool down.

[0145] The present application detects the temperature of the charging device, and the vehicle main control module interacts with the charging device, so that the vehicle main control module can start the heat dissipation device to dissipate heat according to the temperature of the charging device, thereby reducing the temperature of the charging device and the wireless charging device and improving the charging efficiency.

[0146] In one of the embodiments, if the temperature of the charging device is less than a fourth preset value, the status information of the charging device is received to check whether the charging of the charging device is completed. If charging is completed, charging is stopped; if charging is not completed, the status information of the charging device continues to be received.

[0147] In one embodiment, before charging the charging device using the wireless transmitting coil, the method further includes:

[0148] Obtain the identification code of the charging device and authenticate the charging device;

[0149] Determine whether there is a target protocol corresponding to the identification code among the multiple charging protocols;

[0150] If there is a target protocol corresponding to the identification code and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electrical energy according to the target protocol.

[0151] Specifically, when communicating with the charging device for verification, if the charging device identification code is the IPA of the protocol storage unit in the wireless charging device, and the authentication is successful through the key matching of the encryption and decryption authentication unit, that is, it is determined that the target protocol corresponding to the identification code exists in multiple charging protocols and the charging device is authenticated, then the wireless charging master controls the power output of the wireless charging power unit according to the IPA protocol requirements in the protocol storage unit in the wireless charging device, thereby realizing efficient protocol wireless charging of the charging device; if the charging device identification code is the IPB of the protocol storage unit in the wireless charging device, and the authentication is successful through the key matching of the encryption and decryption authentication unit, that is, it is determined that the target protocol corresponding to the identification code exists in multiple charging protocols and the charging device is authenticated, then the wireless charging master controls the power output of the wireless charging power unit according to the IPB protocol requirements of the protocol storage unit in the wireless charging device, thereby realizing efficient protocol wireless charging of the charging device.

[0152] In one embodiment, the method further comprises:

[0153] If there is no target protocol corresponding to the identification code, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electrical energy according to the wireless charging standard protocol.

[0154] Specifically, the wireless charging standard protocol is an open, global wireless charging standard designed to ensure interoperability between devices of different brands and models. If the wireless charging device does not integrate the private fast charging protocol corresponding to the charging device, a universal QI (according to the global universal wireless charging standard) wireless fast charging is established for charging.

[0155] In one embodiment, the wireless transmitting coil includes an NFC coil and a wireless communication coil; charging a charging device using the wireless transmitting coil includes:

[0156] One of the NFC coil and the wireless communication coil is controlled to charge the charging device.

[0157] In one embodiment, there is at least one wireless communication coil; and controlling one of the NFC coil and the wireless communication coil to charge the charging device comprises:

[0158] Generate NFC control instructions based on the status information of the charging device to control the NFC coil to communicate with the charging device; or

[0159] Generate wireless communication control instructions based on the status information of the charging device to control the wireless communication coil to communicate with the charging device.

[0160] In one of the embodiments, an NFC control instruction is generated according to the status information of the charging device to control the NFC coil to communicate with the charging device, specifically including: determining that the charging device has an NFC function;

[0161] Generate an NFC control instruction according to the NFC function of the charging device, and according to the NFC control instruction, turn on the NFC coil gating unit and establish NFC communication with the charging device;

[0162] Receive a charging request from a charging device and control the NFC coil to charge the charging device according to the charging request.

[0163] The wireless charging device of the present application can establish communication and charging with the charging device according to the type of the charging device. If the charging device has an NFC function, the wireless charging device can establish NFC communication and NFC charging with the charging device. It has high compatibility and can match different types of charging devices.

[0164] In one embodiment, a wireless communication control instruction is generated according to the status information of the charging device to control the wireless communication coil to communicate with the charging device, specifically including:

[0165] Confirming that the charging device has a wireless charging function, generating a wireless communication control instruction according to the status information of the charging device, and determining a target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction;

[0166] Control the target wireless communication coil to establish charging communication with the charging device;

[0167] Receive a charging request from a charging device and control the target wireless communication coil to charge the charging device according to the charging request.

[0168] Specifically, it is determined that the charging device has a wireless charging function, that is, the charging device is a device with wireless charging, and the wireless communication coil is cyclically selected and determined by the wireless communication coil selection unit, and the wireless charging process is entered after the wireless communication coil is determined.

[0169] In one embodiment, determining a target wireless communication coil from at least one wireless communication coil according to a wireless communication control instruction specifically includes:

[0170] Cyclic connection of the wireless communication coil according to the wireless communication control instruction;

[0171] The wireless communication coil with the greatest signal strength is confirmed to be the target wireless communication coil.

[0172] The wireless charging device of the present application can establish communication and charging with the charging device according to the type of the charging device. If the charging device does not have the NFC function and only has the wireless charging function, the wireless charging device can establish wireless communication and wireless charging with the charging device. It has high compatibility and can match different types of charging devices. Secondly, it can match according to the position of the receiving coil of the charging device, select the wireless communication coil with the largest signal strength, and improve the efficiency of wireless charging.

[0173] Specifically, Fig. 9 As shown, Fig. 9 This is a flowchart of a wireless charging method provided in an embodiment of the present application. An NFC control instruction is generated according to the status information of the charging device, that is, the charging device is confirmed to be an NFC device (that is, it has NFC function) or a combination of NFC and wireless charging device through communication between the charging device and the wireless charging device. The main control module 110 first sends an NFC control instruction to turn on the NFC coil, and the wireless charging device establishes NFC communication with the charging device. If the vehicle is in the anti-theft mode and the power is off at this time, the charging device and the vehicle-mounted main control module 110 perform key verification communication to confirm the identity of the owner. If the key verification passes, the charging device is an authorized device, and the vehicle is powered on; if the verification fails, the vehicle main control module continues to send verification power-on requests in a loop; after the vehicle is powered on successfully, if the charging device is a device with wireless charging, the wireless communication coil is determined by the wireless communication coil selection unit in a loop, and the wireless charging process is entered after the wireless communication coil is determined. If the charging device is an independent NFC device, the Bluetooth connection judgment process is entered; if the vehicle itself is in the power-on state, after the wireless charging device and the charging device establish NFC communication, the vehicle main control module Bluetooth connection request is polled. If the charging device has a Bluetooth peripheral and is in the on state, the main control module 110 of the wireless charging device and the charging device will continue to exchange data quickly through NFC. After the main control module 110 of the wireless charging device receives the Bluetooth verification pairing information from the charging device, it transmits it to the vehicle main control module via the CAN communication unit to complete the pairing of the vehicle main control module and the charging device Bluetooth, and realizes functions such as hands-free phone, music streaming, and data synchronization; if the charging device is a device with wireless charging, the wireless communication coil is determined by the wireless communication coil selection unit through cyclic selection, and the wireless charging process is entered after the wireless communication coil is determined. If the charging device is an independent NFC device, that is, it only has an NFC coil, it enters the NFC charging request; the main control module 110 of the wireless charging device continues to communicate with the charging device in NFC, and the charging device sends an NFC charging request to the main control module 110. After the protocol verification, it is established that the NFC charging follows the wireless charging specification, and the wireless charging device continues to collect the modulation status information fed back by the charging device to ensure charging safety.

[0174] The present application provides a vehicle, comprising: a memory and a processor, wherein a circuit control program is stored in the memory, and when the circuit control program is executed by the processor, the steps of any of the above-mentioned wireless charging methods are implemented.

[0175] An embodiment of the present application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the wireless charging method in any of the above embodiments are implemented.

[0176] In the embodiments of the smart terminal and storage medium provided in the present application, all technical features of any of the above-mentioned display method embodiments may be included, and the expanded and explained contents of the specification are basically the same as those of the embodiments of the above-mentioned methods, and will not be repeated here.

[0177] The embodiment of the present application further provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, the computer executes the methods in the above various possible implementation modes.

[0178] An embodiment of the present application also provides a chip, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip executes the methods in various possible implementation modes as described above.

[0179] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0180] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A wireless charging device, characterized in that: include: A wireless transmitting coil (130), used for transmitting electric energy to a wireless charging receiving device; A wireless transmission control module (120), the wireless transmission control module (120) being connected to the wireless transmission coil (130), the wireless transmission control module (120) being used to detect a quality factor value of the wireless transmission coil (130) and determine a power loss value; A main control module (110) is connected to the wireless transmission control module (120) and the wireless transmission coil (130) and is used to determine that a foreign object exists in the charging area and control the wireless transmission coil (130) to stop transmitting electric energy when the quality factor value of the wireless transmission coil (130) is less than a first preset value and the power loss value is greater than or equal to a second preset value.

2. The wireless charging device according to claim 1, characterized in that: The main control module is also used to determine that there is a charging device in the charging area when the quality factor value of the wireless transmitting coil (130) is greater than a third preset value, and to charge the charging device using the wireless transmitting coil; Wherein, the third preset value is greater than the first preset value.

3. The wireless charging device according to claim 1, characterized in that: The main control module includes a protocol storage unit and an encryption and decryption authentication unit; The encryption and decryption authentication unit is used to authenticate the charging device; The protocol storage unit stores multiple charging protocols. The main control module is used to determine whether there is a target protocol corresponding to the identification code among the multiple charging protocols according to the identification code of the charging device. If the target protocol exists and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module, so that the wireless transmission control module controls the wireless transmitting coil to transmit electric energy according to the target protocol according to the charging control instruction.

4. The wireless charging device according to claim 1, characterized in that: The wireless transmission coil (130) comprises an NFC coil and a wireless communication coil, and the wireless transmission control module (120) comprises a coil gating unit; The coil gating unit is connected to the main control module, the NFC coil and the wireless communication coil, and is used to control one of the NFC coil and the wireless communication coil to communicate with a charging device.

5. The wireless charging device according to claim 4, characterized in that: The number of the wireless communication coil is at least one; the coil gating unit (122) comprises a wireless communication coil gating unit and an NFC coil gating unit; The main control module (110) is used to generate an NFC control instruction according to the status information of the charging device, and the wireless communication coil gating unit is used to receive the NFC control instruction sent by the main control module (110), and control the NFC coil to communicate with the charging device according to the NFC control instruction; The main control module (110) is used to generate a wireless communication control instruction according to the status information of the charging device, and the wireless communication coil selection unit is used to receive the wireless communication control instruction sent by the main control module (110), and determine a target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction, and control the target wireless communication coil to communicate with the charging device.

6. The wireless charging device according to claim 5, characterized in that: When there are multiple wireless communication coils, the wireless communication coil selection unit is used to cyclically select the multiple wireless communication coils according to the wireless communication control instruction, and determine the wireless communication coil with the largest signal strength as the target wireless communication coil, and control the target wireless communication coil to connect with the charging device.

7. The wireless charging device according to claim 2, characterized in that: The wireless charging device also includes a power supply module, and the wireless transmission control module (120) includes a wireless charging power unit; The power supply module is connected to the main control module (110) and the wireless transmission control module (120) and is used to supply power to the main control module (110) and the wireless transmission control module (120); The main control module (110) is used to generate a control signal based on a charging protocol; The wireless charging power unit is used to output corresponding power to the wireless transmitting coil (130) according to a control signal of the main control module (110).

8. The wireless charging device according to claim 7, characterized in that: The wireless transmission control module (120) further comprises a wireless charging driving unit, wherein the wireless charging driving unit is connected to the wireless charging power unit and the main control module (110); The main control module (110) is used to generate a control signal based on a charging protocol; The wireless charging driving unit is used to generate a driving signal according to the control signal, and the driving signal is used to control the wireless charging power unit to output corresponding power.

9. A wireless charging system, characterized in that: It comprises a vehicle main control module and a wireless charging device according to any one of claims 1 to 8, wherein the vehicle main control module is connected to the wireless charging device; the wireless charging device comprises a first communication unit, and the vehicle main control module comprises a second communication unit; The wireless charging device is used to obtain status information of the charging equipment and send the status information to the second communication unit through the first communication unit. The second communication unit is used to receive the status information. The vehicle main control module starts the heat dissipation device according to the status information.

10. A vehicle, characterized in that: Comprising the wireless charging system as claimed in claim 9.

11. A wireless charging method, characterized in that: The method comprises: Obtaining the quality factor value of the wireless transmitting coil and determining the power loss value; If the quality factor value of the wireless transmitting coil is less than a first preset value, and the power loss value of the wireless transmitting coil is greater than or equal to a second preset value, it is determined that there is a foreign object in the charging area, and the wireless transmitting coil is controlled to stop transmitting electrical energy.

12. The wireless charging method according to claim 11, characterized in that: The method comprises: If the quality factor value of the wireless transmitting coil is greater than a third preset value, it is determined that there is a charging device in the charging area; The wireless transmitting coil is used to charge the charging device.

13. The wireless charging method according to claim 12, characterized in that: After charging the charging device using the wireless transmitting coil, the method further includes: Acquiring status information of the charging device; The wireless transmitting coil or the heat dissipation device is controlled according to the status information.

14. The wireless charging method according to claim 13, characterized in that: The state information includes a power loss value; and controlling the wireless transmitting coil or the heat dissipation device according to the state information includes: If the power loss value is greater than or equal to a second preset value, the wireless transmitting coil is controlled to stop transmitting electrical energy.

15. The wireless charging method according to claim 14, characterized in that: The state information also includes temperature; and controlling the wireless transmitting coil or the heat dissipation device according to the state information further includes: If the power loss value is less than the second preset value and the temperature is greater than or equal to a fourth preset value, the heat dissipation device is activated to dissipate heat from the charging device.

16. The wireless charging method according to claim 12, characterized in that: Before charging the charging device using the wireless transmitting coil, the method further includes: Obtaining an identification code of the charging device and authenticating the charging device; Determining whether a target protocol corresponding to the identification code exists among multiple charging protocols; If the target protocol corresponding to the identification code exists and the charging device is authenticated, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electric energy according to the target protocol.

17. The wireless charging method according to claim 16, characterized in that: The method further comprises: If the target protocol corresponding to the identification code does not exist, a charging control instruction is sent to the wireless transmission control module to control the wireless transmission coil to transmit electric energy according to the wireless charging standard protocol.

18. The wireless charging method according to claim 12, characterized in that: The wireless transmitting coil includes an NFC coil and a wireless communication coil; the method of charging the charging device by using the wireless transmitting coil includes: Controlling one of the NFC coil and the wireless communication coil to charge the charging device.

19. The wireless charging method according to claim 18, characterized in that: The number of the wireless communication coil is at least one; and the step of controlling one of the NFC coil and the wireless communication coil to charge the charging device includes: Generate an NFC control instruction according to the status information of the charging device to control the NFC coil to communicate with the charging device; or A wireless communication control instruction is generated according to the status information of the charging device to control the wireless communication coil to communicate with the charging device.

20. The wireless charging method according to claim 19, characterized in that: Generate an NFC control instruction according to the status information of the charging device to control the NFC coil to communicate with the charging device, specifically including: determining that the charging device has an NFC function; Generate an NFC control instruction according to the NFC function of the charging device, and turn on the NFC coil gating unit according to the NFC control instruction and establish NFC communication with the charging device; A charging request from the charging device is received and, according to the charging request, the NFC coil is controlled to charge the charging device.

21. The wireless charging method according to claim 19, characterized in that: Generate a wireless communication control instruction according to the status information of the charging device to control the wireless communication coil to communicate with the charging device, specifically including: confirming that the charging device has a wireless charging function, generating a wireless communication control instruction according to the state information of the charging device, and determining a target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction; Controlling the target wireless communication coil to establish charging communication with the charging device; A charging request from the charging device is received and the target wireless communication coil is controlled according to the charging request to charge the charging device.

22. The wireless charging method according to claim 21, characterized in that: Determining a target wireless communication coil from at least one wireless communication coil according to the wireless communication control instruction specifically includes: Cyclic switching on the wireless communication coil according to the wireless communication control instruction; The wireless communication coil with the largest signal strength is confirmed to be the target wireless communication coil.

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