Wireless charging assembly and charging equipment

Abstract

The utility model discloses a wireless charging assembly and charging equipment, and the wireless charging assembly comprises a charging pedestal which is installed below an installed object, and is internally provided with a first mainboard and a first coil electrically connected with the first mainboard; the transfer pad is mounted above the mounted object, an electromagnetic induction coil and a signal conversion circuit electrically connected with the electromagnetic induction coil are arranged in the transfer pad, and the signal conversion circuit is used for enhancing an electric signal converted by the electromagnetic induction coil; wherein the first coil and the electromagnetic induction coil transmit energy through electromagnetic coupling. The charging device comprises a second main board and a second coil electrically connected with the second main board, and the second coil is used for transmitting energy with the electromagnetic induction coil of the wireless charging assembly through electromagnetic coupling. According to the utility model, through the design of the transfer pad, distance attenuation is effectively compensated, the receiving distance of charging is prolonged, and stable charging and state communication can be realized in a large range.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless charging technical field especially wireless charging assembly and charging equipment. BACKGROUND

[0002] The development of wireless charging technology provides a convenient solution for electronic device power supply, however, the traditional magnetic attraction type wireless charging device still has significant limitations in practical application. The existing technology such as magnetic attraction type wireless charging device has realized near distance high efficiency charging, but when the charging distance is slightly far or in a complex electromagnetic environment, its performance decreases obviously. Specifically, the traditional scheme relies on the principle of close coupling electromagnetic induction, the charging efficiency decreases exponentially with the increase of distance, when there is a gap or misalignment between the charging device and the charging base, the magnetic field strength decreases cubically with the distance, and the charging efficiency decreases obviously.

[0003] At the same time, in the environment where there are other electronic devices interference or multi metal objects, the communication quality and foreign matter detection reliability of the system are greatly reduced, and the charging interruption or power instability often occurs. Although the existing improved scheme such as increasing the size of the coil or improving the working frequency can partially alleviate these problems, it often brings new problems such as device size increase, cost increase or compatibility reduction.

[0004] Therefore, there is an urgent need for a wireless charging scheme that can maintain stable charging performance and communication quality in a larger range. SUMMARY

[0005] In order to solve the above-mentioned defects existing in the prior art, the utility model provides wireless charging assembly and charging equipment.

[0006] The utility model employs the technical scheme that designs wireless charging assembly for charging device wireless charging. Wireless charging assembly includes: charging base, it is installed in the below of being installed thing, the first mainboard and the first coil that are equipped with with the first mainboard electrical connection in the charging base;Transfer pad, it is installed in the above of being installed thing, the electromagnetic induction coil and the signal conversion circuit that are equipped with with the electromagnetic induction coil electrical connection in the transfer pad, signal conversion circuit is used for enhancing the electric signal that electromagnetic induction coil conversion;Wherein, the first coil and the electromagnetic induction coil pass through electromagnetic coupling transmission energy.

[0007] Further, the signal conversion circuit includes: an amplification circuit for amplifying the electric signal converted by the electromagnetic induction coil and outputting an amplified signal; a filter circuit for filtering out noise of the amplified signal and outputting a pure signal; and a modulation circuit for modulating the pure signal and driving the electromagnetic induction coil to regenerate an electromagnetic signal.

[0008] Further, the charging base is provided with a first magnetic separation sheet separated between the first mainboard and the first coil.

[0009] Further, the transfer pad is internally provided with a lower magnet ring for positioning the charging device, and the lower magnet ring is aligned with the center of the electromagnetic induction coil.

[0010] Further, the first main board is a high-power transmitting board supporting a maximum of 24W and a 30mm distance output.

[0011] In some embodiments of the utility model, the installed object is a desktop, and the transfer pad is a silica gel pad.

[0012] The utility model also provides a charging device, comprising: a second main board and a second coil electrically connected with the second main board, and the second coil is used for transmitting energy with the electromagnetic induction coil of the wireless charging assembly through electromagnetic coupling.

[0013] Further, the charging device is internally provided with a second magnetic separation sheet separated between the second main board and the second coil.

[0014] Further, the charging device is internally provided with an upper magnet ring, and the upper magnet ring is aligned with the center of the electromagnetic induction coil, and the upper magnet ring is used for mutual attraction with the lower magnet ring of the wireless charging assembly.

[0015] Further, the charging device is provided with a recessed part for mounting the second main board and the second coil, and the outer side of the recessed part is covered with a protective pad.

[0016] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0017] 1. The electromagnetic induction coil inside the transfer pad can concentrate the alternating magnetic field of the transmitting end and the communication signal emitted by the transmitting end, the signal conversion circuit enhances the signal, and then the signal is transmitted to the receiving end coil through the electromagnetic induction coil, effectively prolongs the receiving distance of charging, and ensures that stable charging and state communication can be realized in a larger range;

[0018] 2. The magnetic separation sheet is designed between the main board and the coil, effectively isolating the electromagnetic effect between the circuit and the external device, preventing electromagnetic interference from affecting the normal charging process, and improving the charging efficiency and safety;

[0019] 3. The magnet rings that are mutually attracted are designed in the transfer pad and the charging device, the stability and reliability of the magnetic attraction connection are improved, and the charging failure and communication interruption problems caused by unstable or misaligned magnetic attraction are reduced. DRAWINGS

[0020] The utility model will be described in detail in combination with embodiments and drawings, in which:

[0021] Figure 1 is a three-dimensional schematic view of the utility model carrier structure;

[0022] Figure 2It is the exploded schematic view of the utility model carrier structure;

[0023] BRIEF DESCRIPTION OF DRAWINGS: 100, charging base; 200, transfer pad; 300, charging equipment; 1, charging bottom shell; 2, first mainboard; 3, first magnetic isolation sheet; 4, light guide; 5, first coil; 6, charging surface cover; 7, electromagnetic induction coil; 8, lower magnet ring; 9, transfer pad; 10, protection pad; 11, upper magnet ring; 12, second magnetic isolation sheet; 13, second coil. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0025] The wireless charging assembly provided by the utility model is used for wireless charging of charging equipment, and realizes long-distance and high-efficiency wireless charging through innovative magnetic circuit design and energy transmission architecture.

[0026] As shown in Figure 1 , 2 The wireless charging assembly comprises a charging base 100 and a transfer pad 200, the charging base 100 is installed below the installed object, and the transfer pad 200 is installed above the installed object, so that the surface of the installed object is more flat and beautiful, and in a common application scenario, the installed object is a desktop. The charging base 100 is internally provided with a first mainboard 2 and a first coil 5 electrically connected with the first mainboard 2, the transfer pad 200 is internally provided with an electromagnetic induction coil 7 and a signal conversion circuit electrically connected with the electromagnetic induction coil 7, the first coil 5 and the electromagnetic induction coil 7 transmit energy through electromagnetic coupling, the electromagnetic induction coil 7 converts electromagnetic signals into electric signals, the signal conversion circuit enhances the electric signals, and then the electromagnetic induction coil 7 emits the electric signals to a receiving end coil.

[0027] The first mainboard 2 preferably adopts a high-power emission plate, supports a maximum output of 24W, and the effective transmission distance can reach 30mm, and is suitable for charging of large-capacity equipment such as tablet computers and notebook computers. In actual application, a high-power emission plate already available on the market can be selected, and the high-power output significantly improves the charging speed compared with a traditional 5W / 15W scheme.

[0028] The design of the transfer pad effectively compensates for distance attenuation, prolongs the receiving distance of charging, and ensures that stable charging and state communication can be realized within a larger range.

[0029] Specifically, the signal conversion circuit comprises: an amplification circuit for amplifying the electric signal converted by the electromagnetic induction coil 7 and outputting an amplified signal; a filter circuit for filtering noise of the amplified signal and outputting a pure signal; and a modulation circuit for modulating the pure signal and driving the electromagnetic induction coil 7 to regenerate an electromagnetic signal. The signal processing sequence is that the electromagnetic induction coil 7 converts the received electromagnetic signal into an electric signal, the amplification circuit, the filter circuit, the modulation circuit, and the electromagnetic induction coil 7 emits an electromagnetic signal. The amplification processing of the amplification circuit is the basis of signal enhancement, but the amplification circuit will amplify both the signal and the noise, and the out-of-band interference must be suppressed by the filter circuit, otherwise the modulation circuit may be triggered by noise.

[0030] It should be noted that the amplification circuit, the filter circuit and the modulation circuit can adopt existing circuits and have corresponding functions, and the focus of the utility model is to apply the signal conversion circuit in the relay pad, rather than to improve the circuit structure in the signal conversion circuit.

[0031] In some embodiments of the utility model, the charging base 100 is provided with a first magnetic separation sheet 3 separated between the first main board 2 and the first coil 5, the first magnetic separation sheet 3 is made of ferrite material, and the main function is to shield the interference of the main board electronic element on the magnetic field, avoid energy loss, and guide the magnetic field to the direction of the relay pad 200 to improve the coupling coefficient.

[0032] As an optimization, the relay pad 200 is provided with a lower magnetic coil 8 for positioning the charging device 300, the lower magnetic coil 8 is aligned with the center of the electromagnetic induction coil 7, and the main function of the lower magnetic coil 8 is to form a magnetic attraction positioning with the upper magnetic coil 11 of the charging device 300 to ensure accurate alignment of the coils, and to enhance the magnetic field focusing and reduce the edge magnetic leakage. In addition, the relay pad 200 is designed as a silica gel pad, which not only ensures wear resistance but also has good buffering effect, effectively protecting the surface of the device.

[0033] As shown in Figure 1 , 2 The utility model also provides a charging device 300 which is charged by the above wireless charging assembly. The charging device 300 comprises: a second main board and a second coil 13 electrically connected with the second main board, the second coil 13 is used for transmitting energy through electromagnetic coupling with the electromagnetic induction coil 7 of the relay pad 200, and the electromagnetic induction coil 7 converts the electromagnetic signal into an electric signal.

[0034] In some embodiments of the utility model, the charging device 300 is provided with a second magnetic separation sheet 12 separated between the second main board and the second coil 13, the function of the second magnetic separation sheet 12 is similar to that of the first magnetic separation sheet 3, which effectively prevents the circuit on the second main board from being interfered by the alternating magnetic field, reduces the eddy current loss, and the second magnetic separation sheet 12 can also guide the magnetic field to concentrate and improve the coupling coefficient.

[0035] As the optimization, the charging device 300 is provided with the upper magnet ring 11, the upper magnet ring 11 is aligned with the center of the electromagnetic induction coil 7, and the upper magnet ring 11 and the lower magnet ring 8 of the transfer pad 200 are arranged in a polarity symmetry mode, so that the "foolproof" precise alignment is realized, the user does not need to deliberately adjust the position of the device to achieve the best charging effect, and the device sliding is effectively prevented, and the stability of the charging process is ensured.

[0036] The charging device 300 is also provided with a recess for mounting the second main plate and the second coil 13, and the outer side of the recess is covered with a protective pad 10, which can be a high-anti-silk silica gel pad. The high-anti-silk silica gel pad can effectively prevent small foreign matters such as hair, fibers and metal scraps from entering the recess through its dense structure and anti-static property. In the traditional design, these foreign matters can be stuck between the coil and the main plate, causing local short circuit or magnetic field distortion, and the design is widely applicable to different application environments.

[0037] Taking the charging of the charging device 300 by the charging base 100 as an example, the first coil 5 driven by the first main plate 2 of the charging base 100 emits electromagnetic signals, the electromagnetic induction coil 7 of the transfer pad 200 receives the electromagnetic signals emitted by the first coil 5, the electromagnetic induction coil 7 converts the electromagnetic signals into electric signals, the signal conversion circuit enhances the electric signals, and then the electromagnetic induction coil 7 emits the electric signals to the second coil 13 of the charging device. The second coil 13 of the charging device 300 inducts electric energy and charges the battery after rectification. During the whole process, the automatic adsorption function of the upper and lower magnet rings ensures the coaxial alignment of the three-terminal coil, so that the coupling coefficient is kept at a high level, and the charging efficiency is greatly improved.

[0038] Compared with the traditional scheme, the utility model has significant improvement in effective distance, maximum power and alignment tolerance. This kind of high-power emission plate combined with the three-stage design of the magnetic attraction type transfer pad and the magnetic isolation optimization successfully solves the efficiency and stability problem of long-distance wireless charging, and is particularly suitable for various application scenarios such as smart home, vehicle-mounted and industrial equipment power supply.

[0039] It should be noted that the terms used above are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model. When the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, devices, components and / or their combinations exist. The order of actions, steps, etc. in the devices and methods shown in the specification is not limited to the order shown, as long as the output of the previous process is not used in the subsequent process. The similar order of words used for convenience of description does not mean that the order must be implemented.

[0040] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as falling within the scope of the present description. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like-numbers and letters on the figures identify like items, and thus, once an item is defined in one figure, it should not require further discussion in subsequent figures.

[0041] The above merely provides the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wireless charging component for wirelessly charging a charging device; characterized in that, The wireless charging component includes: A charging base is installed below the object being installed, and the charging base contains a first main board and a first coil electrically connected to the first main board. A transfer pad is installed above the object to be installed. The transfer pad contains an electromagnetic induction coil and a signal conversion circuit electrically connected to the electromagnetic induction coil. The signal conversion circuit is used to enhance the electrical signal converted by the electromagnetic induction coil. The first coil and the electromagnetic induction coil transmit energy through electromagnetic coupling.

2. The wireless charging component according to claim 1, characterized in that, The signal conversion circuit includes: An amplifier circuit is used to amplify the electrical signal converted by the electromagnetic induction coil and output an amplified signal; A filtering circuit is used to filter out noise from the amplified signal and output a clean signal; A modulation circuit is used to modulate the pure signal and drive the electromagnetic induction coil to regenerate the electromagnetic signal.

3. The wireless charging component according to claim 1, characterized in that, The charging base is provided with a first magnetic shielding sheet that separates the first motherboard and the first coil.

4. The wireless charging component according to claim 1, characterized in that, The transfer pad is provided with a lower magnet ring for positioning the charging device, and the lower magnet ring is aligned with the center of the electromagnetic induction coil.

5. The wireless charging component according to claim 1, characterized in that, The first motherboard is a high-power transmitter board that supports output of up to 24W at a distance of 30mm.

6. The wireless charging component according to claim 1, characterized in that, The object to be installed is a desktop, and the transfer pad is a silicone pad.

7. A charging device, characterized in that, include: A second motherboard and a second coil electrically connected to the second motherboard, the second coil being used to transfer energy via electromagnetic coupling with the electromagnetic induction coil of the wireless charging component.

8. The charging device according to claim 7, characterized in that, The charging device is provided with a second magnetic shielding sheet separating the second motherboard and the second coil.

9. The charging device according to claim 7, characterized in that, The charging device is provided with an upper magnet ring, which is aligned with the center of the electromagnetic induction coil. The upper magnet ring is used to attract each other with the lower magnet ring of the wireless charging component.

10. The charging device according to claim 7, characterized in that, The charging device has a recess for mounting the second motherboard and the second coil, and the outside of the recess is covered with a protective pad.

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