Wearable device charging device and cellular communication system

Abstract

The utility model provides a wearable device charging device and a cellular communication system. The wearable equipment charging device comprises a data transmission interface; the processor is connected with the data transmission interface; the cellular communication module is connected with the processor and is used for accessing a cellular network to carry out cellular communication; the processor is also used for receiving data of the cellular communication module in a cellular communication process or sending data to the cellular communication module; the data transmission interface is further used for being connected with an intelligent device through a data line, and the processor is further used for responding to access of the intelligent device through the data transmission interface. Data of the cellular communication module in the cellular communication process is forwarded to the intelligent equipment through the data line, and data sent by the intelligent equipment is sent to the cellular communication module through the data line. The wearable equipment charging device can enable the intelligent equipment to indirectly access a cellular network for cellular communication.

Description

Technical Field

[0001] The present application relates to the field of wearable devices, and in particular to a wearable device charging device and a cellular communication system. Background Art

[0002] Smart devices such as mobile phones can achieve cellular communication through their configured SIM (Subscriber Identity Module) cards and cellular modules. However, in some special circumstances, smart devices cannot achieve cellular communication, for example, due to arrears, cellular module abnormalities, or the absence of a SIM card in the device. Therefore, there is an urgent need for a device that can provide cellular communication for smart devices under special circumstances.

[0003] Some wearable devices and their storage devices are usually carried by users due to their portability. The storage devices of some wearable devices are charging devices for the wearable devices. For example, due to the small size of TWS (Ture Wireless Stereo, true wireless headphones), a corresponding charging box is usually configured so that the TWS can be placed in the charging box for charging and storage.

[0004] Currently, charging devices for wearable devices generally do not have a structure that enables smart devices to achieve cellular communication. Utility Model Content

[0005] In view of this, the present application aims to provide a wearable device charging apparatus and system, so as to provide a portable device that can enable smart devices to achieve cellular communication.

[0006] In a first aspect, an embodiment of the present application provides a wearable device charging device, comprising: a data transmission interface; a power module and a charging module, the charging module being connected to the power module and the data transmission interface respectively, the data transmission interface being used to access an external power supply to charge the power module through the charging module and the external power supply, and the charging module being further used to connect to a wearable device to obtain electrical energy from the power module to charge the wearable device; a processor being connected to the data transmission interface; a cellular communication module being connected to the processor and being used to access a cellular network for cellular communication; the processor being further used to receive data from the cellular communication module during cellular communication, or to send data to the cellular communication module; the data transmission interface being further used to connect to a smart device via a data line, and the processor being further used to forward data from the cellular communication module during cellular communication to the smart device via the data line and to send data sent by the smart device to the cellular communication module in response to access by the smart device through the data transmission interface, so that the smart device can indirectly access the cellular network.

[0007] Charging devices for wearable devices are typically small and portable. In the embodiments of the present application, the wearable device charging device can charge the wearable device through a data transmission interface, a power module, and a charging module. By reusing the data transmission interface, the charging device can be connected to a data line and connected to a smart device via the data line. A processor and a cellular communication module are provided within the charging device, allowing the charging device to access a cellular network for communication. Data during cellular communication can then be received by the smart device or sent to the cellular module through the processor, data transmission interface, and data line forwarding. This allows the smart device to access the cellular network for communication through the wearable device charging device, meeting the need for cellular network communication when the smart device itself cannot access the cellular network.

[0008] In one embodiment, the wearable device is a true wireless headset, and the wearable device charging device is a charging box of the true wireless headset.

[0009] True wireless earphones are usually placed in a charging box for storage and charging. Generally, if a user carries true wireless earphones, they usually carry a charging box. Since true wireless earphones are small in size, the charging box is also small in size, making it easy to carry. In the embodiment of the present application, the charging box of the true wireless earphones realizes the function of a wearable device charging device. Since the true wireless earphones and the charging box are easy to carry, it is convenient for the smart device used by the user to access the cellular network in more scenarios.

[0010] In one embodiment, the data transmission interface is a Type-C (a universal serial bus interface form factor standard) interface.

[0011] Different ports can be set in the type-c interface to realize the multiplexing of charging and data transmission. At present, the type-c interface is widely used. For example, the interface of most smart devices such as mobile phones and tablets is the type-c interface. Therefore, in the embodiment of the present application, the type-c interface is used as the data transmission port of the wearable device charging device, which has greater applicability and can meet the needs of more devices to access the cellular network.

[0012] In one embodiment, the cellular communication type supported by the cellular communication module includes at least one of 2G communication, 3G communication, 4G communication, and 5G communication.

[0013] In the embodiments of the present application, the wearable device charging device can be used as a supplementary method to enable smart devices to access the cellular network in some special cases. 4G communication or 5G communication can be selected based on communication speed requirements, or 2G communication or 3G communication can be selected based on power consumption requirements. The scope of application can also be increased to allow more devices to access the cellular network and multiple combinations of 2G communication, 3G communication, 4G communication, and 5G communication can be set. In addition, it can also be configured according to other requirements, such as cost, personalized customization, etc. The above are only examples and should not be considered as limitations of this application.

[0014] In one embodiment, the wearable device charging device also includes: a short-range wireless communication module, which is connected to the processor; the short-range wireless communication module is used to perform short-range wireless communication with the smart device; the processor is also used to respond to the access of the smart device through the short-range wireless communication module, forward the data of the cellular communication module during the cellular communication process to the smart device through the short-range wireless communication module, and send the data sent by the smart device to the cellular communication module, so that the smart device can indirectly access the cellular network.

[0015] In the embodiments of the present application, a short-range wireless communication module can also be used to connect to a smart device. The short-range wireless communication module and the processor can also forward cellular communication data, allowing the smart device to indirectly access the cellular network. Compared to connecting through a data transmission interface, wireless connection is simpler and does not require a data cable connection, making it easier to carry. At the same time, the wearable device charging device can also connect to the wearable device through the short-range wireless communication module to control the wearable device or forward data from the wearable device.

[0016] In one embodiment, the short-range wireless communication module may include a Bluetooth module.

[0017] Compared to other short-range wireless communications, Bluetooth communication has the characteristic of low power consumption, which helps to reduce the power consumption of smart devices for cellular communication through wearable device charging devices.

[0018] In one embodiment, the Bluetooth module supports at least one of classic Bluetooth, low-power Bluetooth, and Bluetooth low-power audio.

[0019] In one embodiment, the short-range wireless communication module includes a WIFI (Wireless Fidelity) module.

[0020] In an embodiment of the present application, the short-range wireless communication module of the wearable device charging apparatus further includes a WIFI module, so that the smart device can access the cellular network via WIFI, thereby expanding the scope of use of the wearable device charging apparatus.

[0021] In a second aspect, an embodiment of the present application provides a cellular communication system, comprising: a wearable device charging device as described in any one of the first aspects; a smart device, wherein the smart device is connected to the data transmission interface of the wearable device charging device via a data cable; the wearable device charging device is also used to enable the smart device to indirectly access the cellular network based on the data transmission interface, the processor and the cellular communication module in response to the smart device accessing the data transmission interface.

[0022] In one embodiment, the cellular communication system further includes: a true wireless headset; and the wearable device charging device is a charging box for the true wireless headset. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A structural block diagram of a wearable device charging apparatus provided in one embodiment of the present application;

[0025] Figure 2 A schematic diagram of a first communication relationship provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a charging box for a true wireless headset provided in one embodiment of the present application;

[0027] Figure 4 A schematic diagram of a second communication relationship provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a cellular communication system structure and its communication is provided in an embodiment of the present application.

[0029] Icons: wearable device charging device 100; data transmission interface 110; charging module 120; first contact 121; second contact 122; power module 130; processor 140; cellular communication module 150; short-range wireless communication module 160; smart device 200; wearable device 300; cellular communication system 400; cellular base station 500. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] First, the embodiment of the present application provides a wearable device charging device 100. Figure 1 , Figure 1 This is a structural block diagram of a wearable device charging apparatus 100 provided in one embodiment of the present application. The wearable device charging apparatus 100 includes: a data transmission interface 110, a power module 130, a charging module 120, a processor 140 and a cellular communication module 150.

[0032] The data transmission interface 110 is used to connect to a power cord. The charging module 120 is connected to the data transmission interface 110, and the charging module 120 is also connected to the power module 130. After the data transmission interface 110 is connected to an external power source via the power cord, the charging module 120 can obtain power from the external power source to charge the power module 130, and the power module 130 can store power. At the same time, the charging module 120 is also used to connect to the wearable device 300, and can obtain power from the power module 130 to charge the wearable device 300.

[0033] The data transmission interface 110 , the power module 130 and the charging module 120 may refer to the structures of various existing charging devices or use existing structures, which will not be elaborated here.

[0034] In an embodiment of the present application, the wearable device charging apparatus 100 further includes a processor 140 and a cellular communication module 150, the cellular communication module 150 being connected to the processor 140, and the processor 140 being connected to the data transmission interface 110. The processor 140 may be one or more processors, and is not limited thereto.

[0035] In this embodiment, the cellular communication module 150 is configured with a SIM card or an eSIM (embedded-SIM) for accessing a cellular network for cellular communication. The processor 140 can be used to receive data from the cellular communication module 150 during the cellular communication process, or to send data to the cellular communication module 150.

[0036] At the same time, in an embodiment of the present application, the data transmission interface 110 can be connected to the smart device 200 via a data line, and the processor 140 can respond to the access of the smart device 200 through the data transmission interface 110 by forwarding the data of the cellular communication module 150 during the cellular communication process to the smart device 200 via the data line and sending the data sent by the smart device 200 to the cellular communication module 150, so that the smart device 200 can indirectly access the cellular network and realize cellular communication.

[0037] In this embodiment, the processor 140 and the cellular module in the wearable device charging apparatus 100 can serve as an intermediate device to assist the smart device 200 in implementing cellular functions, so that the smart device 200 can indirectly perform cellular communication based on the processor 140 and the cellular module in the wearable device charging apparatus 100.

[0038] In an embodiment of the present application, the processor 140 is used to forward data during cellular communication. In an embodiment of the present application, the data transmission interface 110 includes multiple ports, such as a data transmission port and a charging port. The processor 140 can determine whether the data transmission interface 110 has data line access by detecting whether the data transmission port is connected or whether a corresponding indication signal is received, or configure a corresponding detection circuit on the data transmission interface 110 to detect whether the data transmission interface 110 has data line access, and then generate a corresponding trigger signal to control data forwarding to the cellular module. The specific procedures of the above process can be implemented using existing programs or existing circuits.

[0039] See also Figure 2 , Figure 2 This is a schematic diagram of a first communication relationship provided in an embodiment of the present application. In this embodiment, the data transmission link can be represented as: smart device 200, wearable device charging device 100, and cellular base station 500. The wearable device charging device 100 serves as a transfer device. Through the wearable device charging device 100, the smart device 200 can indirectly access the cellular network for cellular communication in some special circumstances.

[0040] For example, when the smart device 200 is in arrears, the wearable device charging device 100 can be used to indirectly access the cellular network to handle some urgent matters. For another example, the wearable device charging device 100 can be used as a testing tool to test whether the cellular module of the smart device 200 itself or the current cellular communication environment is normal. For another example, a tablet computer or a new mobile phone placed at home may not be equipped with a SIM card. The wearable device charging device 100 can be used to access the cellular network for dial-up calls. The above is only an example. The actual application scenario can be selected by the user according to needs and will not be expanded here.

[0041] In the embodiment of the present application, the smart device 200 is a mobile phone, a tablet computer, etc. The wearable device 300 can be smart glasses, wireless headphones, a smart watch, a wristband, etc.

[0042] In one embodiment of the present application, the wearable device 300 may be a true wireless headset, and the wearable device charging device 100 may be a charging box for the true wireless headset. The true wireless headset may be any of in-ear headsets, semi-in-ear headsets, and open-ear headsets, without limitation.

[0043] See also Figure 3 , Figure 3 Schematic diagram of a charging box for a true wireless headset provided in one embodiment of the present application. In this embodiment, the true wireless headset includes a first headset and a second headset (or a left headset and a right headset), and the first headset and the second headset each include a contact for charging, and the contact members of the first headset and the second headset are generally arranged at the bottom of their respective headsets (the bottom of the ear handle). The charging box includes a first contact member 121 and a second contact member 122, and the first contact member 121 and the second contact member 122 are respectively connected to the charging module 120, and the first contact member 121 and the second contact member 122 are respectively arranged at the bottom of different accommodating cavities in the charging bin, and the accommodating cavities are used to accommodate the first headset and the second headset, and the first contact member 121 is configured to contact with the contact member of the first headset, and the second contact member 122 is configured to contact with the contact member of the second headset, thereby charging the first headset and the second headset. The above structure can refer to the existing true wireless charging headset and charging box, and will not be expanded here.

[0044] The size of true wireless earphones is small. In order to facilitate storage, true wireless earphones are usually placed in a charging box to reduce the possibility of loss. Therefore, when users carry true wireless earphones, they usually carry the charging box corresponding to the true wireless earphones together. At the same time, the size of the charging box corresponding to the true wireless earphones is also small, which is easy to carry. Based on this feature, a processor 140 and a cellular module are set in the charging box of the true wireless earphones, which is convenient for users to carry with them, so that when necessary, they can take out the wearable device charging device 100 to enable the smart device 200 to indirectly access the cellular network.

[0045] There are many types of data transmission interface 110. In the embodiment of the present application, the data transmission interface 110 is a Type-C interface.

[0046] Currently, the Type-C interface has been widely used. The interfaces of various smart devices 200 and various wearable devices 300 generally use the Type-C interface. For example, the interface of a mobile phone and the charging interface of a true wireless headset are all Type-C interfaces. Therefore, in the embodiment of the present application, the Type-C interface is selected as the data transmission interface 110. It has better versatility, can be adapted and connected to more devices, is more convenient to use, and reduces the need for users to carry adapter cables or adapters.

[0047] In other embodiments of the present application, other types of interfaces may be configured, and the charging port and the data transmission port may not be set in the same interface (ie, two interfaces are set), which is not limited here.

[0048] In an embodiment of the present application, the cellular communication types supported by the cellular communication module 150 include at least one of 2G (2-Generation wireless telephone technology, second-generation mobile phone communication technology specifications) communication, 3G (3rd-Generation, third-generation mobile communication technology) communication, 4G (the 4th generation mobile communication technology, fourth-generation mobile communication technology) communication, and 5G (5th-Generation Mobile Communication Technology, fifth-generation mobile communication technology) communication.

[0049] The configuration of the above-mentioned cellular communication module 150 can be configured according to actual needs. For example, if the wearable device charging device 100 is used as a means to access the cellular network in an emergency, when the signal transmission speed requirements are low and the battery life requirements are high, 2G communication or 3G communication with lower power consumption can be configured. If the cellular communication module 150 is used as a device specifically for enabling a smart device 200 without a SIM card to indirectly access the cellular network, when there are certain requirements for transmission speed, 4G communication or 5G communication can be configured. For another example, some smart devices 200 support a limited number of cellular communication types. For example, some smart devices 200 only support 2G communication, 3G communication, and 4G communication, but not 5G communication. Therefore, in order to adapt to more devices, the cellular communication types supported by the cellular communication module 150 can include multiple types of 2G communication, 3G communication, 4G communication, and 5G communication.

[0050] Currently, the LTE (Long Term Evolution) protocol is widely used in 4G communications, for example, cat-1, cat-4 and other communication protocols in LTE. Therefore, in the embodiment of the present application, the cellular communication module 150 can at least support the LTE protocol.

[0051] In an embodiment of the present application, the wearable device charging apparatus 100 further includes: a short-range wireless communication module 160 , which is connected to the processor 140 .

[0052] As mentioned above, the wearable device charging apparatus 100 can be connected to the wearable device 300 through the short-range wireless communication module 160. For example, a true wireless earphone is connected to the charging box through short-range wireless communication.

[0053] See also Figure 4 , Figure 4 This is a schematic diagram of a second communication relationship provided by an embodiment of the present application. In this embodiment, the wearable device charging device 100 can also access the cellular network (i.e., directly access the cellular network), and the smart device 200 can also access the cellular network. As a result, the smart device 200 and the wearable device charging device 100 can achieve long-distance wireless communication to transmit data through forwarding of the cellular base station / cell. Furthermore, due to the short-range wireless communication between the wearable device 300 and the wearable device charging device 100, the audio data (such as music, call data) transmitted by the smart device 200 can be played through the wearable device 300. It should be distinguished from the aforementioned embodiment. In this embodiment, the cellular base station is used as a transfer device, while in the aforementioned embodiment, the wearable device charging device 100 is used as a transfer device.

[0054] For example, in one embodiment, the mobile phone (smart device 200) and the charging box (wearable device charging device 100) are connected to the cellular network at the same time. The mobile phone can send audio data to the charging box through the cellular network, and the charging box can forward the audio data to the true wireless earphones for playback through short-range wireless communication. At the same time, the gestures or voice performed by the user on the true wireless earphones can be converted into corresponding instructions and transmitted to the mobile phone through the cellular network, so that the mobile phone can perform corresponding actions, such as making calls, switching songs, etc. Thus, when the user goes to exercise (such as running, fitness, swimming, etc.) or goes out for a short time, he can only carry earphones and charging box without carrying a mobile phone, and can listen to music, make calls, etc. In this embodiment, the eSIM card used by the charging box can be the same as the eSIM number of the smart device 200 used by the user.

[0055] In the embodiments of the present application, the short-range wireless communication module 160 may include a Bluetooth module. On the one hand, wearable devices 300, such as true wireless earphones, are typically equipped with a Bluetooth module. Therefore, configuring the wearable device charging apparatus 100 with a Bluetooth module eliminates the need for configuring other modules in the true wireless earphones to achieve an adaptive connection. On the other hand, Bluetooth has low power consumption, which helps improve the battery life of the wearable device charging apparatus 100.

[0056] In this embodiment, the Bluetooth module can support at least one Bluetooth protocol among classic Bluetooth, low-power Bluetooth, and Bluetooth low-power audio, and can be configured according to the Bluetooth protocols supported by the wearable device 300 and the smart device 200.

[0057] In some embodiments of the present application, the processor 140 is connected to the short-range wireless communication module 160, and the wearable device charging device 100 can also be connected to the smart device 200 through the short-range wireless communication module 160. The processor 140 can respond to the access of the smart device 200 through the short-range wireless communication module 160, forward the data of the cellular communication module 150 during the cellular communication process to the smart device 200 through the short-range wireless communication module 160, and send the data sent by the smart device 200 to the cellular communication module 150, so that the smart device 200 can indirectly access the cellular network for cellular communication.

[0058] Both the short-range wireless communication module 160 and the data transmission interface 110 can transmit data. Therefore, in the embodiment of the present application, the short-range wireless communication module 160 can also be used to connect the smart device 200 to the wearable device charging device 100, and the forwarding of the short-range wireless communication module 160 enables the smart device 200 to indirectly access the cellular network. Compared with the previous embodiment, the only difference is that the short-range wireless communication module 160 is used here to forward data for cellular communication, while the previous content is to forward data through the data transmission interface 110 and the data line. The communication method in this scenario can be referred to Figure 2 The aforementioned contents related to forwarding through the data transmission interface 110 will not be expanded here.

[0059] In one embodiment of the present application, the short-range wireless communication module 160 may further include a WIFI module, so that the wearable device charging apparatus 100 and the smart device 200 can be connected via WIFI. In this embodiment, the wearable device 300 may also be configured with a WIFI module, and the wearable device 300 and the wearable device charging apparatus 100 can be connected via WIFI communication.

[0060] Through the WIFI module, more communication methods can be provided to enable the smart device 200 to communicate with the charging device of the guest device, so that the smart device 200 can indirectly access the cellular network and expand the scope of application.

[0061] Based on the same utility model concept, the present application embodiment also provides a cellular communication system 400, see Figure 5 , Figure 5 A cellular communication system 400 is provided in an embodiment of the present application. The cellular communication system 400 includes: a wearable device charging apparatus 100 and a smart device 200.

[0062] In an embodiment of the present application, the smart device 200 can be connected to the data transmission interface 110 of the wearable device charging apparatus 100 via a data cable. The wearable device charging apparatus 100 is further configured to, in response to the smart device 200 accessing the data transmission interface 110, enable the smart device 200 to access the cellular network for cellular communication based on the data transmission interface 110, the processor 140, and the cellular communication module 150.

[0063] In another embodiment of the present application, the smart device 200 itself accesses the cellular network, the wearable device charging apparatus 100 accesses the cellular network, and the smart device 200 and the wearable device charging apparatus 100 are communicatively connected via the cellular network to transmit data via the cellular network.

[0064] In one embodiment of the present application, the cellular communication system 400 may further include a wearable device 300 , and the wearable device 300 is respectively connected to the wearable device charging apparatus 100 and the smart device 200 via the short-range cellular communication module 150 .

[0065] The functions implemented by the cellular communication system 400 can be referred to the description of the wearable device charging apparatus 100 mentioned above, which will not be elaborated here.

[0066] In the embodiments provided in this application, it should be understood that the disclosed devices may also be implemented in other ways. The functional modules in the various embodiments of this application may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0067] The above embodiments can be freely combined without conflict, and the embodiments obtained by the combination are included in the protection scope of this application.

[0068] The above detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in the present application without creative effort shall fall within the scope of protection of the present application.

[0069] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0070] It should also be noted that, in the description of this application, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean an electrical connection; it can mean a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0071] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A wearable device charging device, characterized in that: include: Data transmission interface; A power module and a charging module, the charging module being connected to the power module and the data transmission interface respectively, the data transmission interface being used to access an external power source so as to charge the power module through the charging module and the external power source, and the charging module being further used to connect to a wearable device so as to obtain electrical energy from the power module to charge the wearable device; a processor connected to the data transmission interface; a cellular communication module, connected to the processor, for accessing a cellular network for cellular communication; the processor is further configured to receive data from the cellular communication module during cellular communication, or to send data to the cellular communication module; The data transmission interface is also used to connect to the smart device via a data line, and the processor is also used to forward the data of the cellular communication module during the cellular communication process to the smart device via the data line in response to the access of the smart device through the data transmission interface, and send the data sent by the smart device to the cellular communication module, so that the smart device can indirectly access the cellular network.

2. The wearable device charging device according to claim 1, characterized in that: The wearable device is a true wireless headset, and the wearable device charging device is a charging box for the true wireless headset.

3. The wearable device charging device according to claim 2, characterized in that: The data transmission interface is a type-c interface.

4. The wearable device charging device according to claim 1, wherein: The cellular communication type supported by the cellular communication module includes at least one of 2G communication, 3G communication, 4G communication, and 5G communication.

5. The wearable device charging device according to any one of claims 1 to 4, characterized in that: The wearable device charging apparatus further includes: a short-range wireless communication module, wherein the short-range wireless communication module is connected to the processor; The short-range wireless communication module is used to perform short-range wireless communication with the smart device; The processor is further configured to, in response to access by the smart device through the short-range wireless communication module, forward data of the cellular communication module during cellular communication to the smart device through the short-range wireless communication module and send data sent by the smart device to the cellular communication module, so that the smart device can indirectly access the cellular network.

6. The wearable device charging device according to claim 5, characterized in that: The short-range wireless communication module includes a Bluetooth module.

7. The wearable device charging device according to claim 6, characterized in that: The Bluetooth module supports at least one of classic Bluetooth, low-power Bluetooth, and Bluetooth low-power audio.

8. The wearable device charging device according to claim 5, characterized in that: The short-range wireless communication module includes a WIFI module.

9. A cellular communication system, characterized in that: include: The wearable device charging device according to any one of claims 1 to 8; A smart device connected to the data transmission interface of the wearable device charging device via a data cable; The wearable device charging apparatus is further configured to enable the smart device to indirectly access a cellular network based on the data transmission interface, the processor, and the cellular communication module in response to the smart device accessing the data transmission interface.

10. The cellular communication system according to claim 9, wherein: The cellular communication system further includes: a true wireless headset; The wearable device charging device is a charging box for true wireless headphones.

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