阅读说明：本技术 一种自动授电垫 (Automatic power supply pad ) 是由 郝利静 王海滨 钱茂冬 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种自动授电垫,包括基垫、电极控制模块和至少两个电极,其中,所述电极设置在所述基垫的表面,任意两个相邻所述电极之间相互不导通；所述电极控制模块的输入端与电源连接,输出端分别与每个所述电极连接；进行授电时,受电装置接触所述基垫的表面,使所述受电装置的不同受电触点与至少两个所述电极导通,所述电极控制模块在与所述受电触点接触的所述电极间施加电压,形成向所述受电装置授予电能的电流回路。本发明提供了一种可方便、有效地为可移动设备供电、充电的接触式授电装置。(The invention discloses an automatic power supply pad, which comprises a base pad, an electrode control module and at least two electrodes, wherein the electrodes are arranged on the surface of the base pad, and any two adjacent electrodes are not conducted with each other; the input end of the electrode control module is connected with a power supply, and the output end of the electrode control module is respectively connected with each electrode; when power is supplied, a power receiving device is contacted with the surface of the base pad, different power receiving contacts of the power receiving device are conducted with at least two electrodes, and the electrode control module applies voltage between the electrodes contacted with the power receiving contacts to form a current loop for supplying power to the power receiving device. The invention provides a contact type power supply device which can conveniently and effectively supply power and charge mobile equipment.)

1. An automatic power supply pad is characterized by comprising a base pad, an electrode control module and at least two electrodes, wherein,

the electrodes are arranged on the surface of the base pad, and any two adjacent electrodes are not conducted with each other;

the input end of the electrode control module is connected with a power supply, and the output end of the electrode control module is respectively connected with each electrode;

when power is supplied, a power receiving device is contacted with the surface of the base pad, different power receiving contacts of the power receiving device are conducted with at least two electrodes, and the electrode control module applies voltage between the electrodes contacted with the power receiving contacts to form a current loop for supplying power to the power receiving device.

2. The auto-energizing pad according to claim 1, wherein the electrode control module applies power or signal voltages of different polarity, amplitude, phase, frequency, waveform or impedance to adjacent electrodes.

3. The auto-energizing pad according to claim 1, wherein the powered device further comprises a plurality of feedback contacts, the electrode receives feedback from the powered device through the contacted feedback contacts for sensing the voltage status actually obtained by the powered device, the physical location of the powered device, and information and data of the powered device.

4. The automatic feeding pad as claimed in any one of claims 1 to 3, wherein said electrode is a copper foil electrode, an aluminum foil electrode, a gold foil electrode, a silver foil electrode, a carbon film electrode or a graphite electrode.

5. An automatic current-feeding pad according to any one of claims 1 to 3, wherein said electrode is polygonal, elliptical and/or circular.

6. The automatic feeding pad as claimed in any one of claims 1 to 3, wherein a groove, a groove or an insulating material is provided as a partition between any two of said electrodes which are not electrically connected to each other.

7. An automatic energization mat according to any one of claims 1 to 3, characterized in that the surface of said electrodes is flat, rough or provided with holes, slits, protrusions and/or recesses.

8. The automatic feeding pad as claimed in any one of claims 1 to 3, wherein the surface of said electrode is coated with gold plating, gold immersion, silver plating, nickel plating, tin-sprayed layer or carbon film.

9. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein the base pad is a rigid or flexible circuit board, mat, film or coil made of a base material of resin, plastic, paper, glass fiber, chemical fiber, plant fiber, copper, aluminum or alloy.

10. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein a plurality of light emitting devices are provided on the base pad.

11. The automatic feeding pad as claimed in any one of claims 1 to 3, wherein a plurality of through holes are formed on said base pad, and an external light emitting means can radiate light to the surface of said base pad through said through holes.

12. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein a corner, bottom, surface or edge of said base pad is provided with a plurality of connectors.

13. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein the bottom of said base pad is provided with an adhering, restraining or locking means.

14. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein said electrode is provided on the first surface and/or the second surface of said base pad.

15. The automatic power feeding pad as claimed in any one of claims 1 to 3, wherein the power receiving device is a mobile device.

16. The automatic power-on pad of claim 15, wherein the movable device comprises a handheld communication terminal, a portable computer, a battery-powered toy, a robot, an electric vehicle, and an unmanned aerial vehicle.

Technical Field

The invention relates to the technical field of power supply and charging, in particular to an automatic power supply pad.

Background

In recent years, mobile devices such as robots, electric vehicles, and unmanned aerial vehicles have been widely used. The movable equipment is mainly powered by energy storage elements such as cables or rechargeable batteries, super capacitors and the like: when the cable is used for supplying power, the position and the moving distance of the movable equipment are limited; when energy storage elements such as a rechargeable battery and a super capacitor are used for supplying power, after the energy stored by the energy storage elements is used up, the movable equipment can continue to work by supplementing electric energy.

The traditional charging mode is divided into off-line charging and on-line charging: the energy storage element of the movable equipment is usually manually dismounted during offline charging, and the energy storage element is remounted after charging, so that the labor cost is high, and the automation degree is low; on-line charging allows the device to be charged without removing the energy storage element of the mobile device, which may even be operated (charging + power supply) while charging, but such a method requires providing a contact or non-contact charging and power supply device for the mobile device to transfer power from the power source to the mobile device. Contact-type online charging and power supply device charging usually requires a plug, a socket and other devices to be connected with a battery/power circuit of the movable equipment, and accordingly, the power supply can be connected and disconnected only by manually plugging and unplugging the plug, or the power supply can be connected through a contact, an electrode and the like only after the movable equipment is accurately positioned and fixed. A non-contact online charging device (e.g., a wireless charging device) with low positioning requirement and no need of conductive contact has generally low efficiency, and a powered device and the charging device generate heat more seriously, which wastes energy and is easy to shorten the life of the device and a battery or cause charging obstacles.

Disclosure of Invention

The invention aims to provide a contact type power supply device which can conveniently and effectively supply power and charge mobile equipment.

In order to solve the above problems, the present invention provides an automatic power feeding pad, comprising a base pad, an electrode control module and at least two electrodes, wherein the electrodes are disposed on the surface of the base pad, and any two adjacent electrodes are not conducted with each other; the input end of the electrode control module is connected with a power supply, and the output end of the electrode control module is respectively connected with each electrode; when power is supplied, a power receiving device is contacted with the surface of the base pad, different power receiving contacts of the power receiving device are conducted with at least two electrodes, and the electrode control module applies voltage between the electrodes contacted with the power receiving contacts to form a current loop for supplying power to the power receiving device.

Preferably, the electrode control module applies power or signal voltages of different polarity, amplitude, phase, frequency, waveform or impedance to adjacent electrodes.

Preferably, the powered device further comprises a plurality of feedback contacts, and the electrode receives feedback from the powered device through the contacted feedback contacts, and is used for sensing the voltage state actually obtained by the powered device, the physical position of the powered device and information and data of the powered device.

Preferably, the electrode is a copper foil electrode, an aluminum foil electrode, a gold foil electrode, a silver foil electrode, a carbon film electrode, or a graphite electrode.

Preferably, the electrodes are polygonal, elliptical and/or circular.

Preferably, a trench, a groove or an insulating material is arranged between any two electrodes which are not mutually conducted to form a separation.

Preferably, the surface of the electrode is flat, rough or provided with holes, slits, protrusions and/or depressions.

Preferably, the surface of the electrode is coated with a gold plating layer, a gold immersion layer, a silver plating layer, a nickel plating layer, a tin spray layer or a carbon film.

Preferably, the base pad is a rigid or flexible circuit board, mat, film or coil made of resin, plastic, paper, fiberglass, chemical fiber, plant fiber, copper, aluminum or alloy as a base material.

Preferably, a plurality of light emitting devices are disposed on the substrate.

Preferably, the base pad is provided with a plurality of through holes, and the external light emitting device can radiate light to the surface of the base pad through the through holes.

Preferably, the corners, bottom, surface or edges of the base pad are provided with connectors.

Preferably, the bottom of the base pad is provided with a sticking, limiting or locking device.

Preferably, the electrode is disposed on the first surface and/or the second surface of the base pad.

Preferably, the power receiving device is a mobile device.

Preferably, the mobile device includes a handheld communication terminal, a portable computer, a battery-powered toy, a robot, an electric vehicle, and an unmanned aerial vehicle.

Compared with the prior art, the invention has the following technical effects:

1. the automatic power supply pad provided by the embodiment of the invention automatically contacts with a plurality of power receiving contacts of the power receiving device through a large number of electrodes to conveniently and efficiently supply power and charge the mobile equipment, has extremely low requirements on the position and orientation of the power receiving device, does not need a cable, and does not need to manually remove a battery or plug and unplug a plug.

2. The automatic power supply pad disclosed by the embodiment of the invention reduces the contact resistance and improves the capability of reliable contact between the power receiving equipment and the power supply equipment by using various means such as flexible materials, rough surfaces, holes/slits/convex-concave structures, surface gold plating/gold deposition/silver plating/nickel plating treatment and the like, and can effectively compensate the received voltage drop caused by the contact resistance through the contact of the feedback electrode and the feedback contact of the power receiving device, thereby achieving the expected power supply, charging capability and time effectiveness.

3. The automatic electricity-feeding pad provided by the embodiment of the invention has the advantages of simple structure, light weight, low cost and certain environment tolerance capabilities of rain prevention, corrosion resistance, oxidation resistance and the like; the two sides of the automatic electricity-feeding pad can be simultaneously provided with electrodes with the same shape and layout, when one side of the automatic electricity-feeding pad is reduced in performance or cannot be used due to mechanical damage, pollution and the like, the other side of the automatic electricity-feeding pad can be overturned for use, and the automatic electricity-feeding pad can continuously work, and is high in usability and reliability.

4. The automatic power-on pad provided by the embodiment of the invention can realize multiple functions of power supply, charging, positioning, illumination, indication, identification, display, communication and the like, is easy to recognize, position and connect by the mobile equipment, and can quickly and reliably complete the preset function.

5. The automatic power supply pad in the embodiment of the invention adopts a modularized and expandable design, a plurality of smaller power supply pads with regular shapes can be connected with each other through the connector, and the smaller power supply pads can be easily and freely combined and spliced into the automatic power supply pad with larger area and any shape for various devices without individually customizing the power supply pad with a specific shape and enough area for each device with different sizes and sizes.

6. The automatic electricity-donating pad provided by the embodiment of the invention can be adhered, attached and locked on the surfaces of various existing objects, and if the base pad is made of flexible materials, the automatic electricity-donating pad can be folded, curled and coiled, is easy to store, carry and protect, and is convenient and quick to use, place, position, unfold, deploy, move and fix.

7. The automatic power supply pad provided by the embodiment of the invention has the advantages that the electrodes with different shapes and layouts can be arranged on two surfaces of the automatic power supply pad, the power supply can be completed by selecting one surface with better performance and effect according to the type and the characteristics of the power receiving device, the pad has two purposes, the application range is wide, and the adaptability is strong.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:

FIG. 1 is a top view of the surface of a base pad when the current feed pad is designed with a honeycomb electrode according to an embodiment of the present invention;

FIG. 2 is a top view of the surface of a base pad when the current feeding pad is designed with a matrix electrode according to an embodiment of the present invention;

fig. 3 is a schematic diagram of two exemplary shapes of a power receiving device and exemplary distribution designs of power receiving contacts thereof according to an embodiment of the invention;

FIG. 4 is a schematic diagram of various possible relative positions of the power receiving contact and the honeycomb-shaped power feeding electrode when contacting and feeding power according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of a circuit principle of the embodiment of the present invention in which the power receiving contact and the honeycomb-shaped power feeding electrode contact to feed power;

FIG. 6 is a schematic diagram of various possible relative positions of the power receiving contact and the matrix-shaped power transmitting electrode when the power receiving contact and the matrix-shaped power transmitting electrode are in contact for power transmission according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of a circuit principle of the contact between the power receiving contact and the matrix-shaped power receiving electrode for power transmission according to the embodiment of the present invention;

FIG. 8 is a schematic diagram of the voltage waveform of the power supply when the honeycomb-shaped electricity feeding electrode is adopted in the embodiment of the invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, which are used to describe embodiments of the present invention, and to provide detailed embodiments and specific operation procedures, but the scope of the present invention is not limited to the following embodiments, and those skilled in the art can modify and color the present invention without changing the spirit and content of the present invention.

The invention discloses an automatic power supply pad which is a contact type power supply device capable of conveniently and effectively supplying power and charging for a power receiving device.

Referring to fig. 1 and 2, an auto-energizing pad includes a base pad 2, an electrode control module (not shown in the figure), and a plurality of electrodes 1 in a honeycomb or matrix shape, wherein the electrodes 1 are disposed on a surface of the base pad 2, and any two adjacent electrodes 1 in the electrodes 1 are not electrically connected to each other; the electrode control module is arranged on the base pad 2 or externally connected with the base pad, the input end of the electrode control module is connected with a power supply, and the output end of the electrode control module is respectively connected with each electrode 1; referring to fig. 8, when the honeycomb-shaped electrode is adopted, the electrode control module enables any two adjacent electrodes to have different ac voltage phases, and there are three different voltage phases in total, and the difference between the three voltage phases is 120 degrees, so that the electrode control module is suitable for supplying and charging power to a high-power three-phase ac device or a dc device requiring high contact reliability; when the matrix electrodes are adopted, the electrode control module enables any two adjacent electrodes to have two alternating current or direct current voltages (also can be understood as two voltages with 180-degree phase difference) with different positive and negative polarities at any moment, and the electrode control module is suitable for supplying and charging common single-phase alternating current or direct current equipment.

In this embodiment, the electrodes 1 may be disposed on the first surface and/or the second surface of the base pad 2, the first surface and the second surface are two opposite surfaces of the base pad 2, the first surface and the second surface may be disposed with the electrodes 1 having the same shape and layout, or disposed with the electrodes 1 having different shapes and layouts, or only one surface is disposed with the electrodes 1, and the same surface may also be mixed with the electrodes 1 having different shapes and distributions by regions; it should be understood that the number and arrangement of the electrodes 1 shown in the drawings are only an illustration, and any other number and arrangement of the electrodes may be provided according to the requirement of the practical application.

When power is supplied, after the power receiving device 3 moves into an area above the automatic power supply pad (specifically, after the power receiving device 3 is located on a certain surface of the base pad 2 provided with the electrode), the power receiving device 3 makes different power receiving contacts 31 on the power receiving device contact with at least two electrodes 1 with different polarities or phases by using self gravity or electric and magnetic attraction between the power receiving device and the automatic power supply pad, the electrode control module applies voltage between the electrodes 1 in contact with the power receiving contacts 31 to form a current loop for supplying power to the power receiving device 3, and the automatic power supply pad supplies power to the power receiving device 3 and/or charges a power storage element (such as a battery, a capacitor and the like) carried by the power receiving device 3.

In this embodiment, the power receiving device 3 may be a portable communication terminal, a portable computer, a battery-powered toy, a robot, an electric vehicle, an unmanned aerial vehicle, and other mobile devices, and the power receiving contact 31 may be disposed at the bottom/back of the power receiving communication terminal, a housing of the computer, a surface of the toy, a foot of the robot, a roller of the vehicle, an undercarriage of the unmanned aerial vehicle, and other positions, as shown in fig. 3, 4, and 6, the power receiving device 3 may include 6 to 9 power receiving contacts 31, and cover and contact about 2 to 9 power transmitting electrodes 1, and of course, according to actual application needs, other numbers of power receiving contacts 31 or other shapes and arranged power receiving contacts 31 may be designed to better cover and contact electrodes 1 with different numbers, areas, shapes, and arrangements; referring to fig. 4 to 7, after the power receiving device 3 enters the automatic power feeding pad area, the power receiving device 3 includes at least two power receiving contacts 31 contacting the electrodes 1, and a distance length between two power receiving contacts 31 farthest from among the at least two power receiving contacts 31 is greater than a sum of a distance between any two points on any one electrode 1 of the at least two electrodes 1 and an electrode pitch, so that when designing shapes, structures, and arrangements of the power receiving device 3, the power receiving contacts 31, and the power feeding electrodes 1, it is required to satisfy: the distance length between the two farthest power receiving contacts 31 in all the power receiving contacts 31 contacted with the automatic power transmission pad is greater than the sum of the distance between any two points on any one of the electrodes 1 and the electrode distance, so that after the power receiving device 3 moves to the surface of the automatic power transmission pad from any direction at any angle, at least two power receiving contacts 31 are contacted with two electrodes 1 to form a current loop for transmitting power to the power receiving device 3, and more power receiving contacts can be used for improving the probability that the power receiving contacts 31 are contacted with more different electrodes, increasing the number of the current loops, reducing the contact resistance and increasing the power transmission current capacity; at the same time, care should also be taken to limit the contact surface of the single power receiving contact 31 of the power receiving device 3 with the electrodes 1 from spanning the electrode pitch, so that the single power receiving contact 31 cannot contact multiple electrodes 1 simultaneously, and cannot cause a short circuit.

The electrode control module performs global planning on the polarity, phase, amplitude, frequency, waveform and impedance distribution of all the electrodes 1 on the automatic power supply pad in advance according to the shape, structure and distribution of the electrodes 1 so as to maximize the number and probability that the power receiving contact 31 is contacted with the electrodes 1 with different polarities, phases, amplitudes, frequencies, waveforms and impedances to form a current loop for supplying power to the power receiving device 3;

as a possible embodiment, please refer to fig. 4 to 7, the electrode control module controls to apply power sources or signal voltages with different polarities, amplitudes, phases, frequencies, waveforms, and impedances to the adjacent electrodes 1, so that the power receiving device 3 can obtain the voltage difference between the adjacent electrodes 1 as long as it contacts any two adjacent electrodes 1, thereby forming a power supply, charging, or signal current loop; the electrode control module can provide the optimal power supply condition by simply connecting a common direct current power supply or an industrial standard three-phase alternating current power supply to different electrodes according to the planned polarity and phase distribution interval; the power receiving contact 31 can always contact two or more adjacent electrodes with different polarities and phases at any relative position, and forms one or more power supply, charging or signal current loops.

It is understood that the electrode control module may also control the application of other power sources or signal voltages with different polarities, amplitudes, phases, frequencies, waveforms, impedances to different electrodes 1 according to other preset rules, and may often change with time; for how the electrode control module specifically controls the power supply or signal voltage applying different polarities, amplitudes, phases, frequencies, waveforms and impedances to the adjacent electrodes 1, reference may be made to the prior art, which is not described herein again.

As a possible embodiment, when the electrode 1 is not applied with the power voltage, the electrode 1 can receive the feedback from the power receiving device 3 through the feedback contact of the contacted power receiving device 3 for sensing the power voltage status actually obtained by the power receiving device 3, and when the voltage is lower than the predetermined working and charging voltage, the electrode control module can suitably increase the voltage supplied to the power feeding electrode to compensate the voltage drop caused by the indirect contact resistance between the electrode 1 and the contact 31. When a certain electrode 1 is not controlled by the electrode control module to apply power voltage, the electrode 1 may also receive feedback from the power receiving device 3 through a feedback contact of the contacted power receiving device 3, so as to sense the position state information of the contact of the power receiving device 3 relative to the electrode 1 (for example, a certain voltage indicates that the power receiving device 3 exists at the position of the electrode); one or more pieces of such position state information may be used to determine the position of the power receiving device 3, and may also be used to describe the power receiving area, the direction and the moving direction occupied by the power receiving device, similar to the method of sensing the position, number, motion and gesture of a human finger by a touch screen.

Similarly, in the power supplying process, the power receiving device 3 may also transmit its own power information or other data to the automatic power supplying pad through the electrode 1 contacted by the power receiving device or its adjacent antenna by wired communication such as a feedback contact or other wireless communication methods, and when the battery is full or no longer needs to supply power, the automatic power supplying pad may be requested to disconnect the power supply or reduce the power supply.

Similarly, the signal current loop formed by the contact between the electrode 1 and the feedback contact 31 of the power receiving device 3 (normally with a relatively weak current for information transmission) may also be used to transmit the physical positions of the electrode 1 and the power transmitting device, the relative position (of a large number of other electrodes), the size, the orientation, and the physical position of the automatic power transmitting pad to the power receiving device 3, relative to position marks, sizes, orientations, moving directions and the like (of a large number of other electrodes), accurate positioning information is provided for the power receiving device 3 to calibrate the position of the power receiving device 3, or accurate information of the electrode 1 contacted by the contact 31 of the power receiving device 3 and the whole automatic power feeding pad to which the electrode belongs is provided for applying power supply current (generally stronger for power supply and charging) to the power receiving device 3 through the same contact or different contacts, so that power feeding safety is better guaranteed, and power feeding is reliably and automatically completed.

The current magnitude of the current loop formed after the electrode 1 contacts the feedback contact 31 of the powered device 3 can be influenced and controlled by the powered device 3 or the electrode control module, so the time sequence characteristics of the current loop (such as binary coding formed by intermittent current pulses) can also be used for knowing the information of the nature, type, model, identity, required power receiving voltage, power receiving current, power receiving time length and the like of the powered device 3; the power receiving device 3 may be used as an information source power supply electrode control module or an external device to obtain data and information such as a power supply state, a charging state, a voltage tolerance limit, a current tolerance limit, internal parameters, and files from the power receiving device 3, or to send data and information to the power receiving device 3 (for example, to send the type, model, identity, power transmission capability, operation mode, voltage and current state, and the like of an automatic power transmission pad to the power receiving device 3), so that the power receiving device 3 can automatically select an optimal power transmission mode and process, or be used for the power receiving device 3 to communicate with an automatic power transmission pad or an external device connected with the automatic power transmission pad.

As a possible example, the electrode 1 is a copper foil electrode, a gold foil electrode, a silver foil electrode, or a carbon film electrode. These electrodes have good electrical conductivity and/or are ductile and resistant to corrosion.

As a possible embodiment, the electrode 1 has a polygonal shape (including a rectangle, a square, a diamond, a hexagon, etc., and corners of the polygonal shape may have an arc shape), an oval shape (including a circle), and/or a circle. The electrode shape is generally selected to be easy to splice, combine, expand, control, diagnose, maintain and to ensure a small and consistent electrode spacing to minimize the probability of contact entering the non-conductive region between the electrodes.

As a possible embodiment, a trench, groove or insulating material is provided as a separation between any two electrodes 1. It can be understood that the distance between the two power receiving contacts 31 farthest from each other among the power receiving contacts 31 should be longer than the sum of the distance between any two points on any one electrode 1 of the at least two electrodes 1 and the separation distance of the groove, groove or insulating material disposed between the electrodes 1, so as to increase the probability of at least bringing the two power receiving contacts 31 into contact with two different electrodes 1, and form as many current loops as possible.

As a possible embodiment, the surface of the electrode 1 is designed to be rough or provided with a plurality of holes, slits, protrusions and/or recesses, which can increase the contact area between the electrode 1 and the power receiving contact 31, reduce the contact resistance, improve the contact reliability, and increase the current capacity of the electrode.

As a possible example, the surface of the electrode 1 is coated with gold plating, gold immersion, silver plating, or nickel plating to reduce contact resistance, enhance mechanical strength and conductivity of the electrode, prevent corrosion oxidation in the environment, or damage due to repeated multiple contacts.

As a possible example, the base pad 2 is a rigid or flexible circuit board, mat, film or coil made of resin, plastic, paper, fiberglass, chemical fiber, plant fiber, copper, aluminum or alloy as a base material. The flexible printed circuit board material with soft texture is adopted for manufacturing, or the soft material is arranged on the lower portion of the base pad in a cushioning mode, so that impact on the automatic power feeding pad generated when a power receiving device such as an unmanned aerial vehicle and the like falls to the surface of the automatic power feeding pad can be well buffered, depression is conveniently formed when the power receiving contact 31 of the power receiving device 3 presses the automatic power feeding pad, the contact area between the power receiving contact 31 and the electrode 1 is enlarged, and the contact resistance is reduced; the power receiving contact 31 of the power receiving device 3 is usually located at the bottom of the power receiving device 3, so as to facilitate the power receiving device 3 to reliably contact with the electrode 1 of the auto-energizing pad by its own weight,

as a possible embodiment, the edges and/or the surface of the base pad 2 are provided with several light emitting devices of the same or different colors. The light emitting device can be used for illumination of the automatic power feeding pad and the power receiving device 3 or creating an environmental atmosphere, and the light emitting state, color, brightness, distribution, frequency, duty ratio, timing sequence and the like of the light emitting device can be used as a mark for the power receiving device 3 to identify the existence, position, orientation, area, property, type, model, power feeding capability and the like of the automatic power feeding pad, and the intelligent automatic power feeding pad can even utilize the light emitting device to realize optical communication with the power receiving device 3.

As a possible embodiment, the base pad 2 is provided with a plurality of through holes through which an external light emitting device radiates light to the surface of the base pad 2. Similarly, the external light emitting device can perform functions like lighting, atmosphere creation, signage, communication, and the like of the aforementioned light emitting device.

As a possible embodiment, the corners, bottom, surface or edges of the base pad 2 are provided with connectors, and a plurality of the automatic power supply pads can be connected with each other through the connectors, freely combined and spliced into automatic power supply pads with larger area and arbitrary shape.

As a possible embodiment, the bottom of the base pad 2 is provided with an adhering, limiting or locking device, and the base pad can be attached to the surface of a solid structure through the adhering, limiting or locking device, so that the base pad is convenient to place, position, move and fix when in use. Wherein, the sticking device is usually adhesive sticker, magic tape, magnetic tape, etc., the limiting device is usually a groove, a tenon, a mortise, a bulge, a dent, etc., and the locking device is usually a pin, a nail, a thread/bolt, a clip, a buckle, etc.

The automatic power feeding pad has extremely low requirements on the position and the orientation of the power receiving device 3 in the using process, the power receiving contact 31 of the power receiving device 3 is easy to contact with two or more than two electrodes 1 to form a power feeding loop, and the power feeding pad has the advantages of simple structure, light weight and low cost. If the flexible material is adopted for manufacturing, the flexible material can be curled, coiled and folded so as to be convenient for being accommodated into a small-volume container and carried, and the protection and the fast unfolding and the arrangement when the flexible material is not used and is needed are also facilitated.

The disclosure above is only one specific embodiment of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.