Protocol conversion device capable of being used for wireless charging

Abstract

The utility model relates to a protocol conversion device for wireless charging, which is characterized in that a permanent magnet is arranged on the outer side wall of a shell, the permanent magnet is used for adsorbing an electromagnetic wave transmitting device, a receiving coil is accommodated in an inner cavity of the shell, the receiving coil is used for receiving alternating electromagnetic waves transmitted by the electromagnetic wave transmitting device, and the receiving coil is electrically connected with a protocol identification circuit. The protocol identification circuit is arranged in an inner cavity of the shell, the protocol identification circuit is electrically connected with a receiving circuit, the receiving circuit is arranged in the inner cavity of the shell, and the conversion device of the charging protocol based on the protocol identification circuit enables various charging devices to be compatible with private communication protocols of the hearing aid, so that the hearing aid can be charged; therefore, the use convenience of the user is greatly improved. When the wireless charging hearing aid is charged, a large-size charging box does not need to be carried, and the wireless charging hearing aid is convenient to use. The wireless charging hearing aid can be compatible with various charging devices, such as a reverse charging mobile phone, a charging seat and the like, and the wireless charging hearing aid has the characteristics of convenience and compatibility.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a protocol conversion device that can be used for wireless charging. Background Art

[0002] Existing wireless charging hearing aids need to be charged with the help of the charging box (transmitter) provided by the manufacturer. The charging box is large and inconvenient to carry when going out. At the same time, technicians have noticed that some devices with wireless charging transmission functions, such as reverse wireless charging mobile phones, wireless charging bases, etc., can perform charging functions. Because these devices with wireless charging transmission functions use the QI charging protocol due to their size, power consumption or cost, they cannot communicate with the private charging protocol used by hearing aids. This greatly reduces the convenience of external charging of devices with wireless charging transmission functions.

[0003] Therefore, it is necessary to propose a protocol conversion device that can be used for wireless charging, aiming at the disadvantage that traditional devices with wireless charging transmission function cannot perform charging tasks for private communication protocol devices due to different communication protocols. Utility Model Content

[0004] Based on this, it is necessary to propose a protocol conversion device that can be used for wireless charging, in order to address the disadvantage that traditional devices with wireless charging transmission functions cannot perform charging tasks on private communication protocol devices due to different communication protocols.

[0005] The utility model provides a protocol conversion device that can be used for wireless charging, comprising:

[0006] A shell, wherein the outer wall of the shell is provided with a permanent magnet, the permanent magnet is used to adsorb the electromagnetic wave transmitting device, and the inner cavity of the shell accommodates a receiving coil, the receiving coil is used to receive the alternating electromagnetic wave transmitted by the electromagnetic wave transmitting device;

[0007] The receiving coil is electrically connected to a protocol identification circuit, which is arranged in the inner cavity of the shell. The protocol identification circuit is electrically connected to a receiving circuit, which is arranged in the inner cavity of the shell. The receiving circuit is provided with a plurality of electrodes, and a preset portion of each electrode extends out of the shell. The electrode is externally connected to a hearing aid, and the permanent magnet and the electrode are respectively arranged on mutually parallel side walls of the shell.

[0008] Preferably, the permanent magnet is annular, and the diameter of the permanent magnet is greater than or equal to 40 times the thickness of the permanent magnet.

[0009] Preferably, the projection of the receiving coil along the central axis of the permanent magnet is within the inner ring range of the permanent magnet.

[0010] Preferably, the number of coils of the receiving coil is greater than or equal to 1.5 times the number of coils of the electromagnetic wave transmitting device and less than or equal to 3 times the number of coils of the electromagnetic wave transmitting device.

[0011] Preferably, the protocol identification circuit includes an analog-to-digital circuit, a filtering circuit and a control circuit, the analog-to-digital circuit is electrically connected to the receiving coil, the analog-to-digital circuit is electrically connected to the filtering circuit, the filtering circuit is electrically connected to the control circuit, the control circuit is electrically connected to the analog-to-digital circuit, and the filtering circuit is electrically connected to the receiving circuit.

[0012] Preferably, the control circuit includes an inductive reactance measurement circuit, a current regulation comparator, a clock circuit and a PWM modulation circuit, the inductive reactance measurement circuit is electrically connected to the filter circuit, the inductive reactance measurement circuit is electrically connected to the current regulation comparator, the clock circuit is electrically connected to the current regulation comparator, the clock circuit is electrically connected to the PWM modulation circuit, and the PWM modulation circuit is electrically connected to the analog-to-digital circuit.

[0013] Preferably, the analog-to-digital circuit includes a first N-type MOS transistor, a second N-type MOS transistor, an AND gate and a NOT gate, the input end of the AND gate and the input end of the NOT gate are both electrically connected to the PWM modulation circuit, the gate of the first N-type MOS transistor is electrically connected to the output end of the AND gate, and the gate of the second N-type MOS transistor is electrically connected to the output end of the NOT gate.

[0014] Preferably, the drain of the first N-type MOS transistor is electrically connected to the receiving coil, the source of the first N-type MOS transistor is electrically connected to the drain of the second N-type MOS transistor, and the source of the second N-type MOS transistor is grounded.

[0015] Preferably, the filtering circuit includes an inductor, a resistor and a capacitor, the source of the first N-type MOS tube is electrically connected to one end of the inductor, the source of the first N-type MOS tube is electrically connected to one end of the resistor, the other end of the inductor is electrically connected to the receiving circuit, the capacitor is electrically connected to the link between the resistor and the receiving circuit, and the inductive reactance measurement circuit is electrically connected to the plates of the capacitor respectively.

[0016] Preferably, parameters of the capacitor, the inductor and the resistor are all adjustable.

[0017] Technical advantages of this utility model:

[0018] 1. The charging protocol conversion device based on the protocol identification circuit makes various charging devices compatible with the hearing aid's private communication protocol, so that the hearing aid can be charged, which will greatly improve the convenience of user use. When charging the wireless charging hearing aid, there is no need to carry a large charging box, which is convenient to use. The wireless charging hearing aid can be compatible with various charging devices, such as reverse charging mobile phones, charging docks, etc., with the characteristics of convenience and compatibility.

[0019] 2. By using permanent magnets, magnetic attraction can be achieved, and the transmitting device and the charging protocol conversion device can be brought close to each other, thereby improving the recognition efficiency and energy transfer efficiency, and having the characteristics of high efficiency.

[0020] 3. With the charging protocol converter, users do not need to worry about different charging devices being incompatible with hearing aids, which provides certain conveniences. The transmitter and the charging protocol converter can be connected by magnetic attraction, making the distance between the devices closer and the connection more secure. The hearing aid is charged by connecting the receiving device through metal contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The drawings and descriptions of the exemplary embodiments of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 A schematic diagram of the structure of a protocol conversion device that can be used for wireless charging provided by an embodiment of the utility model.

[0023] Figure 2 A cross-sectional schematic diagram of a protocol conversion device that can be used for wireless charging provided by an embodiment of the utility model.

[0024] Figure 3 A schematic diagram of the structure of a protocol identification circuit of a protocol conversion device that can be used for wireless charging provided by an embodiment of the utility model.

[0025] Figure 4 A schematic diagram of the structure of a control circuit of a protocol conversion device that can be used for wireless charging provided by an embodiment of the utility model.

[0026] Figure 5 A schematic diagram of the structure of a protocol identification circuit of a protocol conversion device that can be used for wireless charging provided by an embodiment of the utility model.

[0027] Reference numerals:

[0028] Shell 1; permanent magnet 2; receiving coil 3; protocol identification circuit 4; analog-to-digital circuit 41; first N-type MOS transistor 411; second N-type MOS transistor 412; AND gate 413; NOT gate 414; filter circuit 42; inductor 421; resistor 422; capacitor 423; control circuit 43; inductive reactance measurement circuit 431; current regulation comparator 432; clock circuit 433; PWM modulation circuit 434; receiving circuit 5; electrode 51. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The utility model provides a protocol conversion device which can be used for wireless charging.

[0031] like Figures 1 to 5 As shown, in one embodiment of the utility model, a protocol conversion device that can be used for wireless charging includes a shell 1, the outer wall of the shell 1 is provided with a permanent magnet 2, the permanent magnet 2 is used to adsorb an electromagnetic wave transmitting device, the inner cavity of the shell 1 accommodates a receiving coil 3, the receiving coil 3 is used to receive the alternating electromagnetic waves sent by the electromagnetic wave transmitting device, the receiving coil 3 is electrically connected to a protocol identification circuit 4, the protocol identification circuit 4 is arranged in the inner cavity of the shell 1, the protocol identification circuit 4 is electrically connected to a receiving circuit 5, the receiving circuit 5 is arranged in the inner cavity of the shell 1, the receiving circuit 5 is provided with a plurality of electrodes 51, a preset portion of each electrode 51 extends out of the shell 1, the electrode 51 is externally connected to a hearing aid, and the permanent magnet 2 and the electrode 51 are respectively arranged on the mutually parallel side walls of the shell 1.

[0032] The permanent magnet 2 is an annular body, and the diameter of the permanent magnet 2 is greater than or equal to 40 times the thickness of the permanent magnet 2. The projection of the receiving coil 3 along the central axis of the permanent magnet 2 is located in the inner ring range of the permanent magnet 2. The number of coils of the receiving coil 3 is greater than or equal to 1.5 times the number of coils of the electromagnetic wave transmitting device and less than or equal to 3 times the number of coils of the electromagnetic wave transmitting device.

[0033] The present embodiment relates to a protocol conversion device that can be used for wireless charging. The charging protocol conversion device based on the protocol identification circuit 4 enables various charging devices to be compatible with the hearing aid's private communication protocol, so that the hearing aid can be charged, which will greatly improve the convenience of user use. When charging the wireless charging hearing aid, there is no need to carry a large charging box, which is convenient to use. The wireless charging hearing aid can be compatible with various charging devices, such as reverse charging mobile phones, charging stands, etc., and has the characteristics of convenience and compatibility. The permanent magnet 2 used can achieve magnetic attraction, and can bring the transmitting device and the charging protocol conversion device close to each other, improve the recognition efficiency and energy transfer efficiency, and has the characteristics of high efficiency.

[0034] The transmitting device can be any wireless charging transmitting device, such as a mobile phone with reverse charging function, a charging box, etc. When the user is at home, he can choose a hearing aid charging box, and when going out, there is no need to carry a charging box, and can use a mobile phone or other device with reverse charging function to charge. Because there is a charging protocol conversion device, there is no need to worry about the problem that different charging devices are incompatible with hearing aids, which provides certain convenience for users. The transmitting device and the charging protocol conversion device can be in magnetic contact, so that the distance between the devices is closer and the connection is more secure. The hearing aid is charged by connecting the receiving device through metal contacts.

[0035] Receiving circuit 5, receiving coil 3 and protocol identification circuit 4. When working, protocol identification circuit 4 identifies different charging protocols, and then controls receiving circuit 5 to work and converts to the charging protocol used for hearing aid charging. Receiving coil 3 receives energy from transmitting coil through magnetic field coupling, thereby charging the subsequent device.

[0036] The working principle of the protocol identification circuit 4 is to modulate and filter the alternating current of different frequencies generated by the alternating magnetic fields of different frequencies acting on the receiving coil 3, so as to realize the input of direct current to the subsequent power consumption unit, thereby realizing the applicability of chargers with different protocols.

[0037] like Figures 1 to 4As shown, in one embodiment of the utility model, a protocol conversion device that can be used for wireless charging includes a shell 1, the outer wall of the shell 1 is provided with a permanent magnet 2, the permanent magnet 2 is used to adsorb an electromagnetic wave transmitting device, the inner cavity of the shell 1 accommodates a receiving coil 3, the receiving coil 3 is used to receive the alternating electromagnetic waves sent by the electromagnetic wave transmitting device, the receiving coil 3 is electrically connected to a protocol identification circuit 4, the protocol identification circuit 4 is arranged in the inner cavity of the shell 1, the protocol identification circuit 4 is electrically connected to a receiving circuit 5, the receiving circuit 5 is arranged in the inner cavity of the shell 1, the receiving circuit 5 is provided with a plurality of electrodes 51, a preset portion of each electrode 51 extends out of the shell 1, the electrode 51 is externally connected to a hearing aid, and the permanent magnet 2 and the electrode 51 are respectively arranged on the mutually parallel side walls of the shell 1.

[0038] The protocol identification circuit 4 includes an analog-to-digital circuit 41, a filter circuit 42 and a control circuit 43. The analog-to-digital circuit 41 is electrically connected to the receiving coil 3, the analog-to-digital circuit 41 is electrically connected to the filter circuit 42, the filter circuit 42 is electrically connected to the control circuit 43, the control circuit 43 is electrically connected to the analog-to-digital circuit 41, and the filter circuit 42 is electrically connected to the receiving circuit 5.

[0039] The control circuit 43 includes an inductive reactance measurement circuit 431, a current regulation comparator 432, a clock circuit 433 and a PWM modulation circuit 434. The inductive reactance measurement circuit 431 is electrically connected to the filter circuit 42, the inductive reactance measurement circuit 431 is electrically connected to the current regulation comparator 432, the clock circuit 433 is electrically connected to the current regulation comparator 432, the clock circuit 433 is electrically connected to the PWM modulation circuit 434, and the PWM modulation circuit 434 is electrically connected to the analog-to-digital circuit 41.

[0040] The analog-to-digital circuit 41 includes a first N-type MOS transistor 411, a second N-type MOS transistor 412, an AND gate 413 and a NOT gate 414. The input end of the AND gate 413 and the input end of the NOT gate 414 are both electrically connected to the PWM modulation circuit 434. The gate of the first N-type MOS transistor 411 is electrically connected to the output end of the AND gate 413, and the gate of the second N-type MOS transistor 412 is electrically connected to the output end of the NOT gate 414. The drain of the first N-type MOS transistor 411 is electrically connected to the receiving coil 3, the source of the first N-type MOS transistor 411 is electrically connected to the drain of the second N-type MOS transistor 412, and the source of the second N-type MOS transistor 412 is grounded.

[0041] The filter circuit 42 includes an inductor 421, a resistor 422 and a capacitor 423. The source of the first N-type MOS transistor 411 is electrically connected to one end of the inductor 421, the source of the first N-type MOS transistor 411 is electrically connected to one end of the resistor 422, the other end of the inductor 421 is electrically connected to the receiving circuit 5, the capacitor 423 is electrically connected to the link between the resistor 422 and the receiving circuit 5, and the inductive reactance measurement circuit 431 is electrically connected to the plates of the capacitor 423. The parameters of the capacitor 423, the inductor 421 and the resistor 422 are all adjustable.

[0042] The present embodiment relates to a protocol conversion device that can be used for wireless charging. The analog-to-digital circuit 41 mainly includes a first N-type MOS tube 411, a second N-type MOS tube 412, an AND gate 413, and a NOT gate 414. The first N-type MOS tube 411, the second N-type MOS tube 412, the AND gate 413, and the NOT gate 414 actually form a push-pull circuit. After receiving the PWM signal of the control circuit 43, the push-pull circuit can convert the analog quantity into a switch quantity.

[0043] The control circuit 43 includes an inductive reactance measurement circuit 431, a current regulation comparator 432, a clock circuit 433 and a PWM modulation circuit 434. The inductive reactance measurement circuit 431 detects the voltage and current processed by the filter circuit 42, and performs negative feedback regulation to make the current regulation comparator 432 output a control level to realize the duty cycle adjustment of the PWM modulation circuit 434 by the clock circuit 433. The PWM modulation circuit 434 outputs a PWM signal corresponding to the duty cycle to the push-pull circuit, optimizes the conversion process of analog quantity into switching quantity, and thereby realizes the adaptation of different charging protocols.

[0044] While the analog-to-digital circuit 41 and the control circuit 43 are operating, the filter circuit 42 performs filtering and rectification on the switch quantity. In fact, the filter circuit 42 includes an inductor 421, a resistor 422 and a capacitor 423, which form an LC filter circuit 42 and an RC filter circuit 42, which can adjust the current and voltage frequency bands that match the hearing aid, thereby achieving the adaptation of different charging protocols. It is worth mentioning that the capacitor 423 also provides a sampling current for the inductive reactance measurement circuit 431.

[0045] In order to improve the adaptability of the wireless charging protocol, the parameters of the capacitor 423, the inductor 421 and the resistor 422 can be adjusted.

[0046] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A protocol conversion device that can be used for wireless charging, characterized in that: include: A shell (1), wherein the outer wall of the shell (1) is provided with a permanent magnet (2), the permanent magnet (2) is used to adsorb the electromagnetic wave transmitting device, and the inner cavity of the shell (1) accommodates a receiving coil (3), the receiving coil (3) is used to receive the alternating electromagnetic waves transmitted by the electromagnetic wave transmitting device; The receiving coil (3) is electrically connected to a protocol identification circuit (4), and the protocol identification circuit (4) is arranged in the inner cavity of the shell (1). The protocol identification circuit (4) is electrically connected to a receiving circuit (5), and the receiving circuit (5) is arranged in the inner cavity of the shell (1). The receiving circuit (5) is provided with a plurality of electrodes (51), and a preset portion of each electrode (51) extends out of the shell (1). The electrode (51) is externally connected to a hearing aid. The permanent magnet (2) and the electrode (51) are respectively arranged on mutually parallel side walls of the shell (1).

2. The protocol conversion device for wireless charging according to claim 1, characterized in that: The permanent magnet (2) is an annular body, and the diameter of the permanent magnet (2) is greater than or equal to 40 times the thickness of the permanent magnet (2).

3. The protocol conversion device for wireless charging according to claim 2, characterized in that: The projection of the receiving coil (3) along the central axis of the permanent magnet (2) is located within the inner ring range of the permanent magnet (2).

4. The protocol conversion device for wireless charging according to claim 3, characterized in that: The number of coils of the receiving coil (3) is greater than or equal to 1.5 times the number of coils of the electromagnetic wave transmitting device and less than or equal to 3 times the number of coils of the electromagnetic wave transmitting device.

5. The protocol conversion device for wireless charging according to claim 4, characterized in that: The protocol identification circuit (4) comprises an analog-to-digital circuit (41), a filter circuit (42) and a control circuit (43); the analog-to-digital circuit (41) is electrically connected to the receiving coil (3); the analog-to-digital circuit (41) is electrically connected to the filter circuit (42); the filter circuit (42) is electrically connected to the control circuit (43); the control circuit (43) is electrically connected to the analog-to-digital circuit (41); and the filter circuit (42) is electrically connected to the receiving circuit (5).

6. The protocol conversion device for wireless charging according to claim 5, characterized in that: The control circuit (43) comprises an inductive reactance measurement circuit (431), a current regulation comparator (432), a clock circuit (433) and a PWM modulation circuit (434); the inductive reactance measurement circuit (431) is electrically connected to the filter circuit (42); the inductive reactance measurement circuit (431) is electrically connected to the current regulation comparator (432); the clock circuit (433) is electrically connected to the current regulation comparator (432); the clock circuit (433) is electrically connected to the PWM modulation circuit (434); and the PWM modulation circuit (434) is electrically connected to the analog-to-digital conversion circuit (41).

7. The protocol conversion device for wireless charging according to claim 6, characterized in that: The analog-to-digital circuit (41) comprises a first N-type MOS transistor (411), a second N-type MOS transistor (412), an AND gate (413) and a NOT gate (414); the input end of the AND gate (413) and the input end of the NOT gate (414) are both electrically connected to the PWM modulation circuit (434); the gate of the first N-type MOS transistor (411) is electrically connected to the output end of the AND gate (413); and the gate of the second N-type MOS transistor (412) is electrically connected to the output end of the NOT gate (414).

8. The protocol conversion device for wireless charging according to claim 7, characterized in that: The drain of the first N-type MOS transistor (411) is electrically connected to the receiving coil (3), the source of the first N-type MOS transistor (411) is electrically connected to the drain of the second N-type MOS transistor (412), and the source of the second N-type MOS transistor (412) is grounded.

9. The protocol conversion device for wireless charging according to claim 8, characterized in that: The filter circuit (42) comprises an inductor (421), a resistor (422) and a capacitor (423); the source of the first N-type MOS transistor (411) is electrically connected to one end of the inductor (421); the source of the first N-type MOS transistor (411) is electrically connected to one end of the resistor (422); the other end of the inductor (421) is electrically connected to the receiving circuit (5); the capacitor (423) is electrically connected to the link between the resistor (422) and the receiving circuit (5); and the inductive reactance measurement circuit (431) is electrically connected to the plates of the capacitor (423).

10. The protocol conversion device for wireless charging according to claim 9, characterized in that: The parameters of the capacitor (423), the inductor (421) and the resistor (422) are all adjustable.

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