Non-contact wireless charger

Abstract

The invention relates to the technical field of wireless charging, in particular to a non-contact wireless charger. Comprising a base and a transmitting end, the transmitting end is fixed to the center of the top of the base, a transmitting coil is arranged on the transmitting end, the transmitting coil is a biorthogonal coil, the biorthogonal coil comprises a coil X and a coil Y, the normal vector of the coil X is parallel to the X axis, the normal vector of the coil Y is parallel to the Y axis, and the coil X and the coil Y are perpendicular to each other. According to the non-contact wireless charger provided by the invention, through the two mutually orthogonal coils, decoupling of an electromagnetic field of the transmitting coil is realized, a uniformly distributed orthogonal magnetic field environment is provided, equipment in the environment can be freely and wirelessly charged, and the charger can perform omnibearing charging in a wireless mode; and the space flexibility is high.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to a contactless wireless charger. Background Art

[0002] As the application market scale of portable consumer electronic products such as smartphones and wearable devices continues to grow, supporting wireless charging terminal products are also emerging in an endless stream, showing the characteristics of diversified application scenarios and gradually increasing power transmission levels to meet users' demand for convenient battery charging.

[0003] So far, most wireless chargers have planar charging coils, and energy can only flow and transfer in one direction, requiring the device being charged to be aligned in the specified direction. When the receiving angle deviates, the energy transmission efficiency drops sharply, resulting in the user being unable to charge the battery freely and efficiently during operation. The energy transmission of the wireless charger system is relatively divergent, and is greatly affected by the angle offset and distance change of the transmitting and receiving coils. As a result, the wireless charging terminal products on the market currently have low spatial freedom of wireless power transmission, small transmission range, poor anti-drift capability, small charging range, and a transmitter can only power one receiver load at the same time.

[0004] To this end, a contactless wireless charger is designed to provide another technical solution to the above technical problem. Summary of the invention

[0005] Based on this, it is necessary to provide a non-contact wireless charger to solve the technical problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A contactless wireless charger comprises a base and a transmitting end, wherein the transmitting end is fixed at the center of the top of the base, and a transmitting coil is arranged on the transmitting end, wherein the transmitting coil is a dual orthogonal coil, and the dual orthogonal coil comprises a coil X and a coil Y, wherein the normal vector of the coil X is parallel to the X-axis, the normal vector of the coil Y is parallel to the Y-axis, and the coil X and the coil Y are perpendicular to each other.

[0008] As a preferred implementation of the contactless wireless charger provided by the present invention, a charging control circuit is provided on the base.

[0009] As a preferred implementation of the contactless wireless charger provided by the present invention, the number of turns of the dual orthogonal coils is consistent.

[0010] As a preferred implementation of the contactless wireless charger provided by the present invention, the synthetic magnetic vector of the transmitting end can always remain perpendicular to the receiving coil during the entire cycle.

[0011] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0012] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects:

[0013] A contactless wireless charger provided by the present invention is composed of two mutually orthogonal coils, which realizes the decoupling of the electromagnetic field of the transmitting coil and provides a uniformly distributed orthogonal magnetic field environment. Devices in this environment can be freely wirelessly charged, and the charger can be fully charged in a wireless manner. It has high spatial flexibility and can better meet the power demand of the device. It has the characteristics of omnidirectional, wide range and high degree of freedom, and better makes up for the shortcomings of existing wireless power transmission technology such as single transmission angle, short transmission range and weak anti-drift ability.

[0014] 2. In the present invention, no matter where the charging object is placed on the charger, the power receiving coil in the charging object and the magnetic flux generated by the transmitting end maintain the charging coil and the magnetic flux density orthogonal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] In the figure: 1. Base; 2. Transmitter. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0021] 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, further definition and explanation thereof is not required in subsequent drawings.

[0022] Embodiment 1

[0023] Reference Figure 1 A contactless wireless charger comprises a base 1 and a transmitting end 2, wherein the transmitting end 2 is fixed at the top center of the base 1, a charging control circuit is arranged on the base 1, and a transmitting coil is arranged on the transmitting end 2, wherein the transmitting coil is a dual orthogonal coil, so that the magnetic field can be decoupled by working as the transmitting coil of the dual orthogonal coil; the dual orthogonal coils have the same number of turns and are used to generate an omnidirectional uniformly distributed spatial magnetic field;

[0024] In this embodiment, the charging control circuit is a charging control circuit of an existing mature wireless charger.

[0025] The dual orthogonal coil includes a coil X and a coil Y, the normal vector of the coil X is parallel to the X-axis, the normal vector of the coil Y is parallel to the Y-axis, and the coil X and the coil Y are perpendicular to each other, so that they can be orthogonal in space, and the decoupling of the magnetic field is realized. There is no mutual inductance between the two transmitting coils. The synthetic magnetic vector of the transmitting end 2 can always remain perpendicular to the receiving coil during the entire cycle, and its amplitude undergoes a cosine transformation with ωt, and the spatial position remains unchanged. The synthetic magnetic vector presents a standing wave characteristic in space, which is equivalent to an omnidirectional distribution of the spatial magnetic field.

[0026] The use process of a contactless wireless charger provided by the present invention is as follows: by locking the position and angle of the receiving coil and controlling the current amplitude of the dual orthogonal coils, the magnetic vector is always perpendicular to the plane of the receiving coil, and full-cycle wireless power transmission is achieved. Therefore, no matter where the charging object is placed in the charger, the charging coil and the receiving coil in the charging object always maintain orthogonal magnetic flux density, and the charging efficiency is prevented from being reduced through inductive coupling.

[0027] Embodiment 2

[0028] A contactless wireless charger, its specific application scenarios are as follows:

[0029] Drones operating in dangerous industrial environments, robotic arms operating on assembly lines, and logistics robots working around the clock, etc.;

[0030] In the field of implantable medical electronics, it mainly includes medical microsphere endoscopes, artificial hearts, cochlear implants, etc. The general power demand of this type of medical equipment is very small, about tens of microwatts to several watts. This technology can ensure that the medical equipment works uninterruptedly in the human body, which can not only shorten the treatment time, but also alleviate the pain of patients during the medical process to a certain extent. Therefore, this technology is a relatively ideal power supply solution for medical equipment;

[0031] It is of great significance to promote the "tailless" of household appliances such as TVs, smart kitchen appliances and smart speakers. In the process of daily use, the power transmission process of electrical equipment is not limited by specific space and angle, and can be transmitted wirelessly in real time according to the needs of the equipment. To a certain extent, it effectively realizes the intelligence, convenience and humanization of the smart home power system;

[0032] When applied to the commercial office field, it can not only make the charging of office equipment such as smartphones, tablets, and voice recorders synchronize with work, thus improving the office efficiency of personnel. At the same time, the products applied by this technology are small in size and light in weight, which is easy to install and hide in commercial office places, solving the problems of house wiring and landscape damage, and also helping to save space resources and improve the neatness and aesthetics of the office area;

[0033] In the field of underwater detection, there are roughly two power supply solutions for underwater vehicles. The first is wired charging, which mostly uses a wet plug interface. The wet plug interface has problems such as wear, short life, and leakage during use, which is not conducive to the requirements of charging safety, and wired charging equipment is expensive. Secondly, wireless power transmission has strict requirements on location. It is difficult for underwater vehicle devices to always remain relatively still with respect to the charging target underwater, and its transmission efficiency is not ideal. Compared with traditional power supply solutions, the advantage is reflected in the contactless wireless charger, which can power multiple loads at the same time and has relatively stable transmission power.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A contactless wireless charger, characterized in that: The invention comprises a base (1) and a transmitting end (2), wherein the transmitting end (2) is fixed at the center position of the top of the base (1), and a transmitting coil is arranged on the transmitting end (2), wherein the transmitting coil is a dual orthogonal coil, and the dual orthogonal coil comprises a coil X and a coil Y, wherein the normal vector of the coil X is parallel to the X-axis, the normal vector of the coil Y is parallel to the Y-axis, and the coil X and the coil Y are perpendicular to each other.

2. A contactless wireless charger according to claim 1, characterized in that: The base (1) is provided with a charging control circuit.

3. A contactless wireless charger according to claim 1, characterized in that: The numbers of turns of the dual orthogonal coils are consistent.

4. A contactless wireless charger according to claim 1, characterized in that: The synthetic magnetic vector of the transmitting end (2) can always remain perpendicular to the receiving coil during the entire cycle.

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