CN217883427U - Bluetooth device and shared charging equipment - Google Patents

Abstract

The utility model relates to a bluetooth module and sharing battery charging outfit, bluetooth module include treater, radio frequency impedance matching circuit and radio frequency antenna, the radio frequency antenna passes through radio frequency impedance matching circuit with the treater is connected, wherein, the treater is used for sending or receiving radio frequency signal, radio frequency impedance matching circuit is used for the basis impedance matching is carried out to radio frequency antenna's internal resistance. Through the method and the device, the technical problem that the Bluetooth transmission efficiency is not high in the related technology is solved, the working state of the radio frequency antenna is guaranteed, the quality of radio frequency signals is improved, and the efficiency and the stability of Bluetooth transmission are further improved.

Description

Bluetooth device and shared charging equipment

Technical Field

The present application relates to the field of wireless transmission, and in particular, to a bluetooth device and a shared charging apparatus.

Background

With the popularization of mobile devices, the use requirements, application scenarios and functions of mobile power supplies are increasing, and the design of mobile power supply charging devices is becoming more and more complex.

In order to reduce the hardware cost of the mobile power supply charging equipment, in the prior art, an interaction signal is output between different modules in a wireless transmission mode. The Bluetooth transmission mode has the characteristics of stability, high efficiency, simple authentication and the like, and is widely applied to local wireless transmission scenes. Meanwhile, in order to further reduce hardware cost, in the prior art, a bluetooth transmission function is integrated into a processor having a computing function. However, in this scheme, the processor directly interacts with the rf antenna in the bluetooth module, and is not optimized for the rf antenna, which results in that the rf antenna cannot work in the best state, and further results in low efficiency of bluetooth transmission. Aiming at the technical problem of low Bluetooth transmission efficiency in the related technology, no effective solution is provided at present.

SUMMERY OF THE UTILITY MODEL

In this embodiment, a bluetooth device and a shared charging device are provided to solve the problem of low bluetooth transmission efficiency in the related art.

In a first aspect, the present embodiment provides a bluetooth device, where the bluetooth device includes a processor, a radio frequency impedance matching circuit, and a radio frequency antenna, where the radio frequency antenna is connected to the processor through the radio frequency impedance matching circuit, where the processor is configured to send or receive a radio frequency signal, and the radio frequency impedance matching circuit is configured to perform impedance matching according to an internal resistance of the radio frequency antenna.

In some embodiments, the rf impedance matching circuit includes a first rf impedance matching circuit and a second rf impedance matching circuit, the first rf impedance matching circuit is connected to the second rf impedance matching circuit, and the processor is connected to the rf antenna sequentially through the first rf impedance matching circuit and the second rf impedance matching circuit.

In some embodiments, the first rf impedance matching circuit includes a first capacitor and a first resistor, the second rf impedance matching circuit includes a second capacitor and a second resistor, the processor is connected to one end of the first capacitor and one end of the first resistor, the other end of the first capacitor is grounded, the other end of the first resistor is connected to one end of the second capacitor and one end of the second resistor, the other end of the second capacitor is grounded, and the other end of the second resistor is connected to the rf antenna.

In some embodiments, the rf impedance matching circuit further includes a third capacitor, one end of the third capacitor is connected to the second resistor and the rf antenna, and the other end of the third capacitor is grounded.

In some embodiments, the bluetooth device further comprises a clock source and a clock impedance matching circuit, wherein the clock source is connected with the processor through the clock impedance matching circuit.

In some embodiments, the clock impedance matching circuit includes a third resistor, a fourth capacitor, and a fifth capacitor, the first port and the second port of the clock source are respectively connected to the ports corresponding to the processors, the third resistor is respectively connected to the first port and the second port, one end of the fourth capacitor is connected to the first port and the third resistor, the other end of the fourth capacitor is grounded, one end of the fifth capacitor is connected to the second port and the third resistor, and the other end of the fifth capacitor is grounded.

In some of these embodiments, the bluetooth module further comprises a power circuit coupled to the processor.

In some embodiments, the power circuit further includes a first power source, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, and a tenth capacitor, one end of each of the sixth capacitor, the seventh capacitor, and the eighth capacitor is connected to the first power source and the processor, the other end of each of the sixth capacitor, the seventh capacitor, and the eighth capacitor is connected to the ground, one end of each of the ninth capacitor and the tenth capacitor is connected to the processor, and the other end of each of the ninth capacitor and the tenth capacitor is connected to the ground.

In some embodiments, the bluetooth device further includes a second power supply, a fourth resistor, and an eleventh capacitor, the fourth resistor is connected to the second power supply, the eleventh capacitor, and the processor, the eleventh capacitor is further connected to the processor, and the other end of the eleventh capacitor is grounded.

In a second aspect, the present embodiment provides a shared charging apparatus, which includes a battery compartment module, a control module, and a power module, where the control module and the power module communicate with each other through the bluetooth device according to any one of the first aspect.

Compared with the related art, the bluetooth module provided in the present embodiment includes: the radio frequency antenna is connected with the processor through the radio frequency impedance matching circuit, wherein the processor is used for sending or receiving radio frequency signals, and the radio frequency impedance matching circuit is used for carrying out impedance matching according to the internal resistance of the radio frequency antenna. The radio frequency impedance matching circuit is arranged between the processor and the radio frequency antenna, so that the impedance of a circuit where the radio frequency antenna is located is matched with the internal resistance of the radio frequency antenna, the radio frequency antenna works in the optimal power state, the technical problem that the Bluetooth transmission efficiency is not high in the related technology is solved, the working state of the radio frequency antenna is guaranteed, the quality of radio frequency signals is improved, and the efficiency and the stability of Bluetooth transmission are improved.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a bluetooth device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 9 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 10 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention;

fig. 11 is a schematic structural diagram of a shared charging device according to an embodiment of the present invention.

Detailed Description

For a clearer understanding of the objects, technical solutions and advantages of the present application, reference is made to the following description and accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein shall have the same general meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of this application do not denote a limitation of quantity, either in the singular or the plural. The terms "comprises," "comprising," "has," "having," and any variations thereof, as referred to in this application, are intended to cover non-exclusive inclusions; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or modules, but may include other steps or modules (elements) not listed or inherent to such process, method, article, or apparatus. Reference in this application to "connected," "coupled," and the like is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference to "a plurality" in this application means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. In general, the character "/" indicates a relationship in which the objects associated before and after are an "or". The terms "first," "second," "third," and the like in this application are used for distinguishing between similar items and not necessarily for describing a particular sequential or chronological order.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a bluetooth device according to an embodiment of the present invention.

In one embodiment, the bluetooth device includes a processor 10, a radio frequency impedance matching circuit 30, and a radio frequency antenna 20, wherein the radio frequency antenna 20 is connected to the processor 10 through the radio frequency impedance matching circuit 30, the processor 10 is configured to transmit or receive radio frequency signals, and the radio frequency impedance matching circuit 30 is configured to perform impedance matching according to an internal resistance of the radio frequency antenna 20.

Illustratively, the processor 10 is configured to transmit radio frequency signals to the radio frequency antenna 20, or receive radio frequency signals transmitted by the radio frequency antenna 20. The processor 10 refers to a computing unit with an operation function, and includes but is not limited to a single chip microcomputer, an FPGA programmable logic controller, and the like. The processor 10 is connected with other modules of the bluetooth apparatus for implementing signal processing, analysis and control.

Specifically, the processor 10 integrates functions of a microcontroller, bluetooth pairing, protocol stack, radio frequency transceiver control, data storage, and the like, and has pins such as input/output, circuit bus, asynchronous transceiver transmitter, and the like for controlling different modules of the bluetooth device.

Illustratively, the rf antenna 20 is connected to the processor 10 through the rf impedance matching circuit 30, and is configured to transmit electromagnetic radiation according to instructions of the processor 10, and to receive electromagnetic radiation and transmit signals to the processor 10.

Illustratively, a radio frequency impedance matching circuit 30 is disposed between the radio frequency antenna 20 and the processor 10, and is configured to set its own impedance according to the internal resistance of the radio frequency antenna 20, so as to perform impedance matching on the radio frequency antenna 20, and ensure that the radio frequency antenna 20 operates in an optimal operating state. The impedance matching means that the impedance of the rf impedance matching circuit 30 is matched with the internal resistance of the rf antenna 20, so as to ensure that the circuit is in the maximum output power state. For example, for a pure resistor circuit, when the resistance of the load resistor is equal to the internal resistance of the excitation source, the circuit is in the maximum output power state. Based on the radio frequency impedance matching circuit 30, high quality transmission of radio frequency signals can be ensured.

Specifically, during the signal transmission between the processor 10 and the rf antenna 20, since there is a reactance component between the load impedance of the rf impedance matching circuit 30 and the internal impedance of the rf antenna 20, a certain relationship needs to be satisfied to ensure the working state of the rf antenna 20. For example, when the load impedance of the rf impedance matching circuit 30 is equal to the internal impedance of the rf antenna 20, that is, the load impedance and the modulus and the argument of the internal impedance are equal, the rf impedance matching circuit 30 may obtain a voltage signal without distortion; when the load impedance of the rf impedance matching circuit 30 is equal to the conjugate value of the internal resistance of the rf antenna 20, i.e. the load impedance is equal to the modulus of the internal resistance and the sum of the argument is zero, the rf impedance matching circuit 30 can obtain the maximum power.

The bluetooth device in this embodiment includes a processor, a radio frequency impedance matching circuit, and a radio frequency antenna, where the radio frequency antenna is connected to the processor through the radio frequency impedance matching circuit, the processor is configured to send or receive a radio frequency signal, and the radio frequency impedance matching circuit is configured to perform impedance matching according to an internal resistance of the radio frequency antenna. The radio frequency impedance matching circuit is arranged between the processor and the radio frequency antenna, so that the impedance of a circuit where the radio frequency antenna is located is matched with the internal resistance of the radio frequency antenna, the radio frequency antenna can work in the optimal power state, the technical problem that the Bluetooth transmission efficiency is not high in the related technology is solved, the working state of the radio frequency antenna is guaranteed, the quality of radio frequency signals is improved, and the efficiency and the stability of Bluetooth transmission are improved.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

In another embodiment, the rf impedance matching circuit 30 includes a first rf impedance matching circuit 31 and a second rf impedance matching circuit 32, the first rf impedance matching circuit 31 is connected to the second rf impedance matching circuit 32, and the processor 10 is connected to the rf antenna 20 sequentially through the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32.

Illustratively, the rf impedance matching circuit 30 is composed of a first rf impedance matching circuit 31 and a second rf impedance matching circuit 32, which together perform impedance matching on the rf antenna 20. The load resistance of the first rf impedance matching circuit 31 and/or the second rf impedance matching circuit 32 is adjusted to make the circuit in the maximum output state.

In the present embodiment, the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 perform impedance matching on the rf antenna 20, so that the adjustment range of the overall load impedance is wider and the adjustment mode is more flexible, thereby improving the impedance matching efficiency of the rf antenna 20.

Please refer to fig. 3, fig. 3 is a schematic structural diagram of a bluetooth module according to another embodiment of the present invention.

In another embodiment, the first rf impedance matching circuit 31 includes a first capacitor C1 and a first resistor R1, the second rf impedance matching circuit 32 includes a second capacitor C2 and a second resistor R2, the processor 10 is connected to one end of the first capacitor C1 and one end of the first resistor R1, the other end of the first capacitor C1 is grounded, the other end of the first resistor R1 is connected to one end of the second capacitor C2 and one end of the second resistor R2, the other end of the second capacitor C2 is grounded, and the other end of the second resistor R2 is connected to the rf antenna 20.

In this embodiment, for example, the first resistor R1 and the first capacitor C1 form a first rf impedance matching circuit 31, the second resistor R2 and the second capacitor C2 form a second rf impedance matching circuit 32, the resistors of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 are adjusted based on the resistances of the first resistor R1 and the second resistor R2, and the reactances of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 are adjusted based on the first capacitor C1 and the second capacitor C2.

It can be understood that, since the rf signal in the rf antenna circuit is an ac signal, the capacitor may block the rf signal during transmission of the rf signal, i.e. the capacitor has a reactance. The reactance of the capacitor is related to the frequency of the rf signal, which causes a phase change of the rf antenna circuit based on a change in the frequency of the rf signal.

Specifically, based on the first resistor R1 and the second resistor R2, the real parts of the load impedances of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 can be adjusted respectively; based on the first capacitor C1 and the second capacitor C2, imaginary components of the load impedances of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 can be adjusted, respectively.

Specifically, the first capacitor C1 and the second capacitor C2 are also used for isolating a direct current portion of the radio frequency signal.

It should be noted that the technical means for adjusting the reactance of the rf impedance matching circuit 30 based on the capacitance in the present embodiment is only an example, and the reactance of the rf impedance matching circuit 30 may also be adjusted based on an electronic component that acts as a barrier to an ac signal, such as an inductance.

In this embodiment, the resistance components in the load impedances of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 are adjusted by the first resistor R1 and the second resistor R2, and the reactance components of the load impedances of the first rf impedance matching circuit 31 and the second rf impedance matching circuit 32 are adjusted based on the first capacitor C1 and the second capacitor C2, so as to match the rf antenna 20, the circuit structure is simple, and the parameters of the first resistor R1, the second resistor R2, the first capacitor C1 and the second capacitor C2 are easy to control, thereby reducing the hardware cost of the bluetooth device.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

In another embodiment, the rf impedance matching circuit 30 further includes a third capacitor C3, one end of the third capacitor C3 is connected to the second resistor R2 and the rf antenna 20, and the other end is grounded.

Illustratively, a third capacitor C3 is further disposed in the radio frequency impedance matching circuit 30, and the first capacitor C1, the second capacitor C2, and the third capacitor C3 can all be used to adjust the reactance of the radio frequency impedance matching circuit 30.

In particular, the third capacitor C3 may also be used to isolate a dc portion of the rf signal.

In this embodiment, the third capacitor C3 is additionally provided, so that the flexibility of reactance adjustment of the radio frequency impedance matching circuit 30 is further improved, and the impedance matching efficiency of the radio frequency antenna 20 is improved.

Please refer to fig. 5, fig. 5 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

In another embodiment, the bluetooth device further comprises a clock source 40 and a clock impedance matching circuit 50, wherein the clock source 40 is connected to the processor 10 through the clock impedance matching circuit 50.

Illustratively, the bluetooth device further includes a clock source 40, the clock source 40 is connected to the processor 10 for providing a frequency-stable and level-matched square-wave pulse clock signal to the processor 10, and the clock source 40 generally includes a positive feedback oscillation circuit composed of a quartz crystal oscillator and a nand gate. In one implementation, the square-wave pulse clock signal of clock source 40 has a frequency of 16MHz.

Illustratively, a clock impedance matching circuit 50 is further disposed between the clock source 40 and the processor 10, and is configured to set its own impedance according to the internal resistance of the clock source 40, so as to perform impedance matching on the clock source 40, and ensure that the clock source 40 operates in an optimal operating state. The impedance matching of the clock source 40 refers to adjusting the impedance of the clock impedance matching circuit 50 to make the impedance match with the internal resistance of the clock source 40, so as to ensure that the clock source circuit is in the maximum output power state. Based on the clock impedance matching circuit 50, high-quality transmission of the clock signal can be ensured, and the frequency error of the clock signal can be reduced.

In this embodiment, the clock impedance matching circuit 50 ensures that the clock source circuit works in the maximum output power state, and ensures the accuracy of the clock signal received by the processor 10, thereby improving the accuracy of the processor 10 in controlling other modules.

Please refer to fig. 6, fig. 6 is a schematic structural diagram of a bluetooth module according to another embodiment of the present invention.

In another embodiment, the clock impedance matching circuit 50 includes a third resistor R3, a fourth capacitor C4 and a fifth capacitor C5, the first port and the second port of the clock source 40 are respectively connected to corresponding ports of the processor 10, the third resistor R3 is respectively connected to the first port and the second port, one end of the fourth capacitor C4 is connected to the first port and the third resistor R3, the other end is grounded, one end of the fifth capacitor is connected to the second port and the third resistor R3, and the other end is grounded.

Illustratively, the third resistor R3, the fourth capacitor C4 and the fifth capacitor C5 constitute a clock impedance matching circuit 50, the resistance of the clock impedance matching circuit 50, i.e., the real part of the load impedance, is adjusted based on the third resistor R3, and the reactance of the clock impedance matching circuit 50, i.e., the imaginary part of the load impedance, is adjusted based on the fourth capacitor C4 and the fifth capacitor C5, thereby implementing the load impedance adjustment of the clock impedance matching circuit 50.

In particular, the fourth capacitor C4 and the fifth capacitor C5 are also used for isolating the dc part of the clock signal.

It should be noted that the technical means for adjusting the reactance of the clock impedance matching circuit 50 based on the capacitance in the present embodiment is only an example, and the reactance of the clock impedance matching circuit 50 may also be adjusted based on an electronic component that acts as a barrier to an alternating current signal, such as an inductance.

In this embodiment, the clock impedance matching circuit 50 formed by the third resistor R3, the fourth capacitor C4 and the fifth capacitor C5 is used to perform impedance matching on the clock source 40, the circuit structure is simple, and the parameters of the third resistor R3, the fourth capacitor C4 and the fifth capacitor C5 are easy to control, so that the hardware cost of the bluetooth device is reduced.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

In another embodiment, the bluetooth module further comprises a power circuit 60, the power circuit 60 being connected to the processor 10.

A power circuit 60 is also illustratively provided in the bluetooth module for powering the processor 10.

Please refer to fig. 8, fig. 8 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

In another embodiment, the power circuit 60 further includes a first power source V1, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, and a tenth capacitor C10, wherein one end of each of the sixth capacitor C6, the seventh capacitor C7, and the eighth capacitor C8 is connected to the first power source V1 and the processor 10, the other end is connected to ground, one end of each of the ninth capacitor C9 and the tenth capacitor C10 is connected to the processor 10, and the other end is connected to ground.

Illustratively, the first power supply V1 is used to power the processor 10. Preferably, the first power supply V1 is a dc power supply.

Illustratively, the processor 10 includes a plurality of input pins, wherein the first power supply V1 may be directly connected to at least one pin for powering different modules of the processor 10, or for powering the processor 10 in a time-sharing manner; the first power source V1 may be connected to the processor 10 through the ninth capacitor C9 and the tenth capacitor C10, and the output electric signal of the first power source V1 may be filtered based on the ninth capacitor C9 and the tenth capacitor C10.

Illustratively, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8 are disposed between different input pins of the processor 10, for isolating signals between the different input pins.

This embodiment is through setting up a plurality of electric capacities between first power V1 and treater 10, guarantees that different input pins have different input signal of telecommunication to keep apart the input signal of telecommunication of different input pins through a plurality of electric capacities, thereby increased treater 10's input mode, need not to set up independent power respectively to different pins, thereby reduced bluetooth module's hardware cost.

Please refer to fig. 9, fig. 9 is a schematic structural diagram of a bluetooth module according to another embodiment of the present invention.

In another embodiment, the bluetooth device further includes a second power source V2, a fourth resistor R4, and an eleventh capacitor C11, the fourth resistor R4 is connected to the second power source V2, the eleventh capacitor C11, and the processor 10, the eleventh capacitor C11 is further connected to the processor 10, and the other end of the eleventh capacitor C11 is grounded.

Illustratively, the second power supply V2, the fourth resistor R4 and the eleventh capacitor C11 constitute a reset circuit, the second power supply V2 is configured to output an electrical signal, and the fourth resistor R4 and the eleventh capacitor C11 form an RC circuit, and are configured to process the output electrical signal to obtain an input level of the processor 10, and the processor 10 receives the level in a power-on stage to complete reset.

In the embodiment, the reset circuit formed by the second power supply V2, the fourth resistor R4 and the eleventh capacitor C11 is used to reset the processor 10, so that the structure is simple and the efficiency of operating the processor 10 is improved.

In another embodiment, the radio frequency antenna 20 comprises an on-board radio frequency antenna.

Illustratively, the rf antenna 20 is an on-board rf antenna, i.e., the rf antenna 20 is disposed directly with the PCB board without the use of a separate assembly antenna.

This embodiment sets up radio frequency antenna 20 to on-board radio frequency antenna, simple to operate and not fragile, need not to assemble the antenna alone to the hardware cost of bluetooth device has been reduced.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a bluetooth device according to another embodiment of the present invention.

The utility model also discloses a bluetooth device of including above embodiment, relevant structure and connected mode have been explained in above embodiment, and this embodiment is no longer repeated.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a shared charging device according to an embodiment of the present invention.

In another embodiment, a shared charging apparatus comprises a battery compartment module, a control module, and a power module, the control module and the power module communicating through the bluetooth device of any of the above embodiments.

Illustratively, the shared charging device is composed of a camera 100, a screen group 200, a front panel 300, a base assembly 400, and the like, wherein the front panel 300 is provided with a plurality of battery compartment modules for placing power modules, and a control module is arranged inside the shared charging device for controlling the shared charging device.

Exemplarily, the control module is wirelessly connected with the power module through a built-in bluetooth device, the power module sends parameter information such as a serial number, temperature, electric quantity, voltage and the like of the power module to the control module based on a wireless transmission channel, and the control module analyzes the parameter information and sends a control instruction to the power module through the wireless transmission channel, so as to manage the power module.

In one specific embodiment, the control module comprises a master control module and a plurality of slave control modules, the master control module is wirelessly connected with the plurality of slave control modules through a bluetooth device, each slave control module is wirelessly connected with at least one power supply module through the bluetooth device, the slave control modules acquire parameter information of the power supply modules through a wireless transmission channel and send the parameter information to the master control module, the master control module collects the parameter information and sends a control instruction to the slave control modules through the wireless transmission channel, and therefore unified control over the shared charging equipment is achieved.

In this embodiment, the control module and the power module communicate with each other through the bluetooth device, so that communication cables of the shared charging device are reduced, the structural design is simplified, and the material cost and the production cost of the shared charging device are reduced.

It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be derived by a person skilled in the art from the examples provided herein without any inventive step, shall fall within the scope of protection of the present application.

It is obvious that the drawings are only examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application can be applied to other similar cases according to the drawings without creative efforts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

The term "embodiment" is used herein to mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly or implicitly understood by one of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the patent protection. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. The Bluetooth device is characterized by comprising a processor, a radio frequency impedance matching circuit and a radio frequency antenna, wherein the radio frequency antenna is connected with the processor through the radio frequency impedance matching circuit, the processor is used for sending or receiving radio frequency signals, and the radio frequency impedance matching circuit is used for carrying out impedance matching according to the internal resistance of the radio frequency antenna.

2. The bluetooth device according to claim 1, wherein the rf impedance matching circuit comprises a first rf impedance matching circuit and a second rf impedance matching circuit, the first rf impedance matching circuit is connected to the second rf impedance matching circuit, and the processor is connected to the rf antenna sequentially through the first rf impedance matching circuit and the second rf impedance matching circuit.

3. The bluetooth device according to claim 2, wherein the first rf impedance matching circuit includes a first capacitor and a first resistor, the second rf impedance matching circuit includes a second capacitor and a second resistor, the processor is connected to one end of the first capacitor and one end of the first resistor, the other end of the first capacitor is grounded, the other end of the first resistor is connected to one end of the second capacitor and one end of the second resistor, the other end of the second capacitor is grounded, and the other end of the second resistor is connected to the rf antenna.

4. The bluetooth device according to claim 3, wherein the rf impedance matching circuit further comprises a third capacitor, one end of the third capacitor is connected to the second resistor and the rf antenna, and the other end of the third capacitor is grounded.

5. The bluetooth device according to claim 1, wherein the bluetooth device further comprises a clock source and a clock impedance matching circuit, the clock source being connected to the processor through the clock impedance matching circuit.

6. The bluetooth device according to claim 5, wherein the clock impedance matching circuit comprises a third resistor, a fourth capacitor and a fifth capacitor, the first port and the second port of the clock source are respectively connected to the corresponding ports of the processor, the third resistor is respectively connected to the first port and the second port, one end of the fourth capacitor is connected to the first port and the third resistor, the other end of the fourth capacitor is grounded, one end of the fifth capacitor is connected to the second port and the third resistor, and the other end of the fifth capacitor is grounded.

7. The bluetooth device according to claim 1, further comprising a power circuit, the power circuit being connected to the processor.

8. The bluetooth device according to claim 7, wherein the power circuit further comprises a first power source, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a tenth capacitor, one end of each of the sixth capacitor, the seventh capacitor and the eighth capacitor is connected to the first power source and the processor, the other end of each of the sixth capacitor, the seventh capacitor and the eighth capacitor is connected to ground, one end of each of the ninth capacitor and the tenth capacitor is connected to the processor, and the other end of each of the ninth capacitor and the tenth capacitor is connected to ground.

9. The bluetooth device according to claim 1, wherein the bluetooth device further comprises a second power supply, a fourth resistor, and an eleventh capacitor, the fourth resistor is connected to the second power supply, the eleventh capacitor, and the processor, the eleventh capacitor is further connected to the processor, and the other end of the eleventh capacitor is grounded.

10. A shared charging apparatus, comprising a battery compartment module, a control module, and a power module, wherein the control module and the power module communicate via the bluetooth device according to any one of claims 1-9.

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