CN209844624U - Wireless power supply device and kitchen electrical equipment - Google Patents

Abstract

The embodiment of the utility model relates to the wireless power supply field discloses a wireless power supply device and kitchen electrical equipment, and this wireless power supply device is through coiling receiving coil on an insulating skeleton, sets up supplementary magnetizer and guides and assemble the magnetic line of force that the electric current of alternation produced in the receiving coil, and the supplementary magnetic flux of getting electric coil through the inside change magnetic flux production induced electromotive force of this supplementary magnetic conduction strip of coiling produces in order to provide the electric energy on the supplementary magnetizer. The wireless power supply device is simple in structure and capable of isolating and outputting high-voltage electricity and low-voltage electricity, so that power is supplied to a high-voltage load and a low-voltage load respectively, the wireless power supply device does not need to specially set corresponding positions of the auxiliary power taking coil and the transmitting coil, and the wireless power supply device and the transmitting host are high in tolerance of bit offset.

Description

Wireless power supply device and kitchen electrical equipment

Technical Field

The utility model relates to a wireless power supply field, in particular to wireless power supply device and kitchen electrical equipment.

Background

At present, most wireless power supply appliances in the market adopt a single receiving coil to meet the load electric energy of the wireless receiving appliances and the electric energy demand of an auxiliary power supply, although only one receiving coil is used in the mode, in the normal working process of transmitting the wireless energy to the wireless appliances, because of self-compensation of a receiving coil resonance system or response delay of a transmitting end control system, the receiving resonance system outputs higher voltage, which can easily cause the damage of a chip or a filtering electrolytic capacitor in a low-voltage system. In order to avoid the damage of circuit elements in a low-voltage system caused by overhigh voltage stress due to the high voltage output by the receiving system, a wireless power supply is also provided in the market, and the wireless power supply adopts independent transmitting and receiving small coils to meet the requirement of taking power by a low-voltage control system of an electric appliance for receiving electric energy.

In implementing the present invention, the inventors found that there are at least the following problems in the above related art: the method for outputting the low voltage by adopting the independent small transmitting coil and the independent small receiving coil has the advantages of complex circuit and higher cost, generally requires that the receiving position and the transmitting position are kept fixed for a long time, and has lower tolerance on the position offset of the wireless power supply device and the transmitting host machine due to the smaller volume of the small transmitting coil and the small receiving coil.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect of prior art, the utility model aims at providing a simple structure just can independently export low pressure and highly compressed wireless power supply unit and kitchen electrical equipment respectively.

The utility model aims at realizing through the following technical scheme:

in order to solve the above technical problem, in a first aspect, the embodiment of the present invention provides a wireless power supply device, including:

an insulating framework;

the receiving coil is wound in the insulating framework and used for coupling energy and providing power supply for a load;

the auxiliary magnetizer is used for converging and guiding magnetic lines of force of magnetic induction lines generated by the receiving coil;

and the auxiliary power taking coil is wound on the auxiliary magnetizer and is used for coupling the magnetic lines guided and converged by the auxiliary magnetizer to generate an induction power supply.

Optionally, the auxiliary magnetic conductor is disposed perpendicular to a winding direction or a winding tangent direction of the receiving coil.

Optionally, the insulating frame is in a shape of a disk, one surface of the insulating frame is provided with the receiving coil, and the other surface of the insulating frame is uniformly provided with at least one auxiliary magnetizer.

Optionally, the method further comprises:

the high-voltage power supply circuit is connected with the receiving coil and used for providing power supply for a high-voltage load;

and the low-voltage power supply circuit is connected with the auxiliary power taking coil and is used for providing a power supply for a low-voltage load.

Optionally, the high voltage supply circuit comprises:

the first rectifying and filtering circuit is connected with the receiving coil;

and the sampling circuit is connected with the first rectifying and filtering circuit.

Optionally, the low voltage power supply circuit comprises:

the second rectification filter circuit is connected with the auxiliary power taking coil;

and the voltage reduction circuit is connected with the second rectification filter circuit.

Optionally, the low-voltage power supply circuit further includes a voltage stabilizing circuit, and the voltage stabilizing circuit is connected to the voltage reducing circuit.

Optionally, the wireless power supply device further includes a controller, and the controller is connected to the voltage stabilizing circuit.

Optionally, the wireless power supply device further includes a wireless communication module, and the wireless communication module is connected to the controller.

In order to solve the above technical problem, in a second aspect, the embodiment of the present invention provides an electrical kitchen appliance, including: the wireless power supply device comprises a transmitting host and the wireless power supply device as described in the first aspect, wherein the transmitting host is provided with a transmitting coil, and the transmitting coil is coupled with a receiving coil in the wireless power supply device.

Compared with the prior art, the beneficial effects of the utility model are that: different from the prior art, the embodiment of the present invention provides a wireless power supply device; the wireless power supply device is characterized in that a receiving coil is wound on an insulating framework, an auxiliary magnetizer is arranged to increase the magnetic permeability of the receiving coil, gather and guide magnetic lines generated by alternating current in the receiving coil, and then an auxiliary power taking coil is wound on the auxiliary magnetizer to generate induced electromotive force through the changed magnetic flux inside the auxiliary magnetic conducting strip so as to provide electric energy. The wireless power supply device is simple in structure and capable of isolating and outputting high-voltage electricity and low-voltage electricity, so that power is supplied to a high-voltage load and a low-voltage load respectively, the wireless power supply device does not need to specially set corresponding positions of the auxiliary power taking coil and the transmitting coil, and the wireless power supply device and the transmitting host are high in tolerance of bit offset.

Drawings

One or more embodiments are illustrated by the accompanying figures in the drawings that correspond thereto and are not to be construed as limiting the embodiments, wherein elements/modules and steps having the same reference numerals are represented by like elements/modules and steps, unless otherwise specified, and the drawings are not to scale.

Fig. 1 is a schematic block diagram of a wireless power supply apparatus provided in a first embodiment of the present invention;

fig. 2 is a schematic overall structure diagram of a wireless power supply device according to a first embodiment of the present invention;

FIG. 3 is a schematic top view of the wireless power unit provided in FIG. 2;

fig. 4 is a schematic block diagram of a wireless power supply apparatus provided in a first embodiment of the present invention;

fig. 5 is a schematic block diagram of a wireless power supply apparatus provided in a first embodiment of the present invention;

fig. 6 is a schematic block diagram of an electrical kitchen appliance according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It should be noted that, if not conflicted, the various features of the embodiments of the invention can be combined with each other and are within the scope of protection of the present application. In addition, although the functional blocks are divided in the device diagram, in some cases, the blocks may be divided differently from those in the device.

Specifically, the embodiments of the present invention will be further explained with reference to the drawings.

Example one

Referring to fig. 1, an embodiment of the present invention provides a wireless power supply device 100, including: the electromagnetic induction receiving coil comprises an insulating framework 110, a receiving coil L1, an auxiliary magnetizer 120 and an auxiliary power taking coil L2, wherein the auxiliary power taking coil L2 obtains electric energy from the receiving coil L1 according to the magnetic conduction effect of the auxiliary magnetizer 120.

The wireless power supply device 100 is a device that can couple magnetic energy and convert the magnetic energy into electric energy, so as to provide sufficient electric energy for a high-voltage system and a low-voltage system. For example, when the wireless power supply apparatus 100 is installed in a wall-breaking machine, the high-voltage system may be a heating apparatus or a motor load in the wall-breaking machine, and the low-voltage system may be a low-voltage control system in the wall-breaking machine. The high voltage system and the low voltage system are determined by the internal structure of the wireless power supply device 100, and the high voltage system and the low voltage system may be a system or a device capable of converting electric energy output by the wireless power supply device 100 into electric energy of another power/voltage, or may be a system or a device capable of converting electric energy into other energy such as thermal energy, optical energy, chemical energy, and the like. The wireless power supply device 100 may be any electronic device capable of obtaining energy through electromagnetic induction of the receiving coil L1, and may be any electronic device capable of supplying power to a high-voltage system and a low-voltage system in an appliance. For example, the electronic device can be a wall breaking machine, a chef machine, an electric cooker, an electric warming oven, a coffee machine and the like which can convert magnetic energy into electric energy. Specifically, whether to adopt and how to adopt the wireless power supply apparatus 100 can be considered according to the actual situation of the electronic device, and the present invention is not limited to the limitations of the embodiments of the present invention.

Insulating skeleton 110 is the skeleton that an insulating material made for the isolation and be used for the installation receiving coil L1 with supplementary electric coil L2 of getting avoids the contact to lead to direct conduction current. The insulating skeleton 110 is made of a high temperature resistant, non-deformable insulating and non-conductive material, such as bakelite or nylon plastic. The shape of the insulating frame 110 can be set according to the installation position and the installation relationship of the receiving coil L1 and the auxiliary power-taking coil L2 on the insulating frame 110. Specifically, the concrete material and the shape that insulating skeleton 110 adopted can set up according to actual need, need not be restricted to the utility model discloses the injeciton of embodiment.

The receiving coil L1 is used to couple energy and provide power to a load. In the embodiment of the present invention, the receiving coil L1 is wound in the insulating frame 110, and the receiving coil L1 is used for coupling the energy from the transmitting coil and transferring the energy to the load and the auxiliary power-taking coil L2. Specifically, the receiving coil L1 is wound on the insulating frame 110 in an annular shape, and the receiving coil L1 is finally in a flat wire disk shape, and the receiving coil L1 is attached to the insulating frame 110. In other embodiments, the installation position of the receiving coil L1, the winding manner, the overall shape of the coil, the diameter of the coil, the cross-sectional shape and area of the coil, the material used, the attaching manner on the insulating frame 110, and the like can be set according to actual needs, and need not be restricted by the embodiments of the present invention.

The auxiliary magnetizer 120 converges and guides the magnetic lines generated by the receiving coil L1. In the embodiment of the present invention, the auxiliary magnetizer 120 can enhance the magnetic permeability of the receiving coil L1, and converge and guide the magnetic force line generated by the receiving coil L1, so that the auxiliary power coil L2 can be coupled to obtain more energy. The auxiliary magnetizer 120 and the receiving coil L1 are arranged in an insulating and isolating way through the insulating framework 110. The auxiliary magnetizers 120 are uniformly arranged on one surface of the insulating framework 110 far away from the receiving coil L1. In the embodiment of the utility model provides an in, supplementary magnetizer 120's material is soft-magnetic, and what transmission host computer and household electrical appliances wireless power supply transmitter were used commonly more is manganese zinc ferrite, because it has high magnetic conductivity, low magnetic loss, higher saturation magnetic induction intensity and curie temperature, and its main function assembles and guides the magnetic line of force. In other embodiments, the position of the auxiliary magnetizer 120, the position relationship between the receiving coil L1 and the insulating frame 110, the size, shape, and material of the auxiliary magnetizer 120 may be set according to actual needs, and need not be limited by the embodiments of the present invention.

The auxiliary power-taking coil L2 is wound around the auxiliary magnetizer 120 and used for coupling magnetic lines guided and converged by the auxiliary magnetizer to generate an induction power supply. The embodiment of the utility model provides an in, supplementary magnetizer 120 gathers and guides the magnetic line that adds receiving coil L1 production behind receiving coil L1's magnetic permeability, supplementary getting electric coil L2 recoupling guide and the magnetic line of force after assembling produce a great magnetic flux change in the supplementary electric coil L2 to produce induced electromotive force, and then can export electric energy. The inductance of the auxiliary power taking coil L2 can be adjusted by simply adjusting the number of winding turns of the auxiliary power taking coil L2, so that different voltage and power requirements of low-voltage loads are met, and the requirements of various different electric appliance auxiliary power sources/low-voltage systems on power taking are met. The surface of the auxiliary power taking coil L2 is also provided with an insulating coating which can avoid being connected with the receiving coil L1 or the auxiliary magnetizer 120. In other some embodiments, the auxiliary power-taking coil L2 can be set according to actual needs, such as the setting position, the winding mode, the overall shape of the coil, the diameter of the coil, the cross sectional shape and the area of the coil, the adopted material, the winding mode and the number of turns on the auxiliary magnetizer 120, and the like, and does not need to be restricted to the embodiment of the present invention.

The embodiment of the utility model provides a wireless power supply device 100; this wireless power supply unit 100 sets up the auxiliary magnetizer 120 through coiling receiving coil L1 on an insulating skeleton 110 and guides and assembles the magnetic line of force that receiving coil L1 produced to through coiling auxiliary getting electric coil L2 on auxiliary magnetizer 120 and thus obtain induction power according to the coupling, this wireless power supply unit 100 simple structure, can keep apart output high voltage and low-voltage electricity, thereby give high-voltage load and low-voltage load power supply respectively, and this wireless power supply unit 100 does not need to set up the relevant position of auxiliary getting electric coil L1 and transmitting coil specially, the offset tolerance is higher.

Specifically, in some embodiments, embodiments of the present invention provide a wireless power supply apparatus 100 as shown in fig. 2 and 3. The wireless power supply device 100 further includes a receiving coil output line T1 and an auxiliary power-taking coil output line T2. The receiving coil output line T1 has one end connected to the receiving coil L1 and the other end connected to a high voltage load. One end of the auxiliary power-taking coil output line T2 is connected to the auxiliary power-taking coil L2, and the other end of the auxiliary power-taking coil output line T2 is connected to a low-voltage load.

The insulating frame 110 is disc-shaped, one surface of the insulating frame 110 is provided with the receiving coil L1, and the other surface is provided with at least one auxiliary magnetizer 120 in uniform arrangement. The auxiliary magnetizer 120 is disposed perpendicular to the winding direction or the winding tangent direction of the receiving coil L1. In the embodiment of the present invention, the receiving coil L1 is wound on one surface of the insulating frame 110, and the other surface of the insulating frame 110 is parallel to the radial direction of the receiving coil L1, and the auxiliary magnetizer 120 is disposed thereon. The auxiliary magnetizer 120 is arranged along the winding direction or the winding tangential direction of the receiving coil L1, and can guide and converge the magnetic force lines of the receiving coil L1 to the maximum extent, so that the auxiliary power taking coil L2 can induce and acquire more potential energy. Therefore, in some special application scenarios, the auxiliary magnetic conductor 120 may also have a certain angular offset from the winding direction or the winding tangent direction of the receiving coil L1, and need not be restricted by the embodiments of the present invention. In addition, in some other embodiments, the insulating frame 110 may also be provided with a groove for installing the auxiliary magnetic conductor 120, so as to better fix the auxiliary magnetic conductor 120.

In the embodiment of the present invention, the insulating frame 110 is a fan blade type frame whose periphery is provided with a fixing frame M, specifically, the number of "fan blades" is 8, the center orientation the one side of the receiving coil L1 is sunken to form a circular truncated cone type protrusion for winding the receiving coil L1, the laminating is provided with 8 on the other side the auxiliary magnetizer 120, and one of them is wound with the auxiliary electricity-taking coil L2. 8 supplementary magnetizer 120 all is perpendicular to receiving coil L1's radius sets up, just receiving coil L1 and 8 supplementary magnetizer 120 all laminates on the two sides of insulating skeleton 110. The periphery of the fixing frame M further extends outward to form four protrusions M1, and the four protrusions M1 are provided with screw holes for fixing the insulating framework 110 on the wireless power supply device 100 or the corresponding kitchen electrical equipment.

In other some embodiments, the specific shape, size, and material of the insulating frame 110, the number, arrangement mode, and arrangement position and direction of the auxiliary magnetizer 120, the auxiliary magnetizer 120 and the receiving coil L1 are in the fixing mode on the insulating frame 110, the winding shape, size, and winding mode of the receiving coil L1, the winding shape, size, and winding mode of the auxiliary power taking coil L2 can be set according to actual conditions, and do not need to be restricted by the embodiment of the present invention.

In some embodiments, referring to fig. 4 and 5, the wireless power supply apparatus 100 further includes: a high voltage supply circuit 130 and a low voltage supply circuit 140. The high voltage power supply circuit 130 and the low voltage power supply circuit 140 are respectively used for supplying power to a subsequent high voltage system and a subsequent low voltage system. The high-voltage system is usually a high-voltage load or a high-power load and needs to output high-voltage electric energy for power supply; the low-voltage system is generally a control system and needs to output low-voltage electric energy for power supply.

The high voltage power supply circuit 130 is connected to the receiving coil L1, and is used for supplying power to the high voltage load 160. The high-voltage power supply circuit 140 specifically includes: a first rectifying-filtering circuit 131 and a sampling circuit 132. The first rectifying and filtering circuit 131 is connected to the receiving coil L1 for eliminating noise and rectifying. The sampling circuit 132 is connected to the first rectifying and filtering circuit 131, and is configured to sample the rectified and filtered current and voltage provided by the receiving coil L1.

The embodiment of the utility model provides an in first rectification filter circuit 131 with receiving coil L1 can adopt the electronic component and the circuit structure that can carry out rectification filter and voltage current sampling commonly used among the prior art, also can add the use after the adaptability is reformed transform according to actual need, does not do not explain in detail here, can be right according to actual conditions first rectification filter circuit 131 with receiving coil L1's electronic component and circuit structure set up, need not be restricted to the utility model discloses the injecing of embodiment.

The low-voltage power supply circuit 140 is connected to the auxiliary power-taking coil L2, and is configured to provide power for the low-voltage load 150. The low voltage power supply circuit 140 specifically includes: a second rectifying and smoothing circuit 141, a voltage reducing circuit 142 and a voltage stabilizing circuit 143. The second rectifying and filtering circuit 141 is connected to the auxiliary power coil L2, and is configured to eliminate noise and rectify the noise. The voltage reducing circuit 142 is connected to the second rectifying and filtering circuit 141, and is configured to further adjust the voltage output by the auxiliary power taking coil L2 to a voltage required by the low-voltage load 150. The voltage stabilizing circuit 143 is connected to the voltage reducing circuit 142, and is configured to provide a stable voltage and current for the low-voltage load 150.

The embodiment of the utility model provides an in the second rectification filter circuit 141 step-down circuit 142 with voltage stabilizing circuit 143 can adopt the electronic component and the circuit structure that can carry out rectification filter, step-down and steady voltage commonly used among the prior art, also can add the use after the adaptability is reformed transform according to actual need, do not do detailed description here, can be right according to actual conditions second rectification filter circuit 141 step-down circuit 142 with voltage stabilizing circuit 143's electronic component and circuit structure set up, need not be restricted by mud in the utility model discloses a injecing.

In the embodiment of the present invention, the wireless power supply device 100 further includes a controller 151 and a wireless communication module 152. Specifically, the controller 151 and the wireless communication module 152 are internal modules of the low voltage load 150. Specifically, the low-voltage load 150 in the wireless power supply device 100 specifically includes: a controller 151 and a wireless communication module 152. The controller 151 is connected to the voltage stabilizing circuit 143, and the wireless communication module 152 is connected to the controller 151.

At least a microprocessor or a microcomputer with computing power is required to be disposed in the controller 151. The microprocessor or the microcomputer may be a plurality of microprocessors or microcomputers having a calculating function provided in the low voltage load 150, or may be an independently provided microprocessor or microcomputer, and the microprocessor or the microcomputer is connected to the voltage stabilizing circuit 143, the wireless communication module 152, the sampling circuit 132, and the control switch 161, respectively, to drive the voltage stabilizing circuit 143, the wireless communication module 152, the sampling circuit 132, and the control switch 161. The microprocessor or microcomputer can be used to set various parameters, obtain various parameters, store various parameters, receive various information, process various information, and send various information and instructions. The controller 151 is also provided therein with a storage medium storing a plurality of executable instructions and programs for data processing of the controller 151. The controller 151 may be a small one-chip microcomputer. In other embodiments, the specific model of the microprocessor or the microcomputer in the controller 151 may be set according to the actual requirement of the controller 151 for the data processing capability, and the specific circuit structure in the controller 151 may be set according to the actual requirement, which is not limited by the embodiments of the present invention.

The wireless communication module 152 is connected to the controller 151, and is configured to send the operating state data and receive a control command. The wireless communication module 152 is further configured to perform a wireless communication connection with an external device, where the external device is a device other than the wireless power supply device 100. For example, a communication module that establishes a wireless communication connection with the wireless communication module 152 may be provided on the transmitting host that supplies power to the receiving coil L1, so as to implement data transmission. Alternatively, a wireless module or a wireless function capable of performing wireless communication with the wireless communication module 152 is provided in a mobile terminal or a server, and the wireless communication module 152 and the mobile terminal or the server can perform data transmission. Specifically, a certain communication protocol is disposed in the wireless communication module 152, and for example, the communication protocol may be a bluetooth communication protocol, a WiFi communication protocol, or the like. In other embodiments, the physical devices and the communication protocols specifically adopted by the wireless communication module 152 can be set according to actual needs, and need not be limited by the embodiments of the present invention.

In the embodiment of the present invention, the high voltage load 160 in the wireless power supply device 100 specifically includes: a control switch 161, a motor 162 and a heating plate 163. The control switch 161 is connected to the motor 162 and the heating plate 163, and the control switch 161 is further connected to the sampling circuit 132. In other embodiments, the high voltage load 160 may be provided with only one or more motors 162 or one or more heat generating plates 163, or may be provided with one or more motors 162 and one or more heat generating plates 163.

The control switch 161 is connected between the sampling circuit 132 and the motor 162 and the heating plate 163. The control switch 161 is used to control the on/off of the high voltage load 160 in the wireless power supply device 100. The control switch 161 may be a purely mechanical switch that is turned on when heating is desired by the user and off when heating is not desired. The control switch 161 may also be an electronic switch combined with intelligent control, in which case, the control switch 161 may be connected to the controller 151, and when the controller 151 receives a control command or detects that the wireless power supply apparatus 100 is in an abnormal state and sends out a control command, the control switch 161 is turned on or off. The control switch 161 may be two switches respectively connected to the motor 162 and the heat generating plate 163, and respectively controls the power of the motor 162 and the heat generating plate 163 to be turned on and off. The control switch 161 may also be a switch, and controls the power of the motor 162 and the heating plate 163 to be turned on and off. In other embodiments, the specific type of the control switch 161 can be set according to actual conditions, and the present invention is not limited to the embodiments of the present invention.

Furthermore, in the embodiment of the present invention, the sampling circuit 132 and the control switch 161 are all connected to the controller 151, the controller 151 can monitor the working current and the working voltage of the high voltage load 160 in real time, and when the high voltage load 160 is in an abnormal state, the control switch 161 is controlled to be turned off, so as to turn off the power supply of the motor 162 and/or the heating plate 163, thereby realizing protection. In other embodiments, the sampling circuit 132 may also be two circuits respectively disposed between the control switch 161 and the motor 162 and between the control switch 161 and the heat-generating plate 163, and the controller 151 is respectively connected to the two sampling circuits so as to respectively monitor the current and voltage input to the motor 162 and the heat-generating plate 163, and thus control the control switch 161 to turn off the power supply of the motor 162 and/or the heat-generating plate 163 when an abnormal condition occurs.

The motor 162 is capable of generating a driving torque as a power source for an electric appliance or various machines, and the motor 162 is used to drive a mechanical device in the high voltage load 160. The motor 162 can be brush motor, also can be brushless motor, can be the motor for the drive, also can be the motor for the control, specifically, motor 162 is which kind of motor, and adopts what model can set up according to actual need, need not be restricted to the utility model discloses the injecion of embodiment.

The heating plate 163 may be used to generate a heating source to provide heat for the heating body to be heated. For example, the heating plate 163 may be a resistance wire, a quartz heating tube, a PTC, or the like. Specifically, the heating plate 163 may be attached to the inner side or the outer side of the heated appliance or the pot body, the heating plate 163 may be disposed inside the heated appliance or the pot body, and the heating plate 163 may also be wound around the heated appliance or the pot body. For example, in the electric cooker, the heating plate can be spirally wound outside the inner container of the electric cooker. In some embodiments, for example, when the heated device is a liquid conductor or a gaseous conductor, the heat generating plate 163 may be disposed inside the heating body. In addition, the placement position of the heating plate 163 in the wireless power supply device 100 needs to be aligned with the position of the heated utensil or pot. The heating plate 163 may be in the form of a flat disk, or may be in the form of a regular or irregular spiral. In other embodiments, the heating plate 163 is disposed at a position. The material etc. of the overall shape of winding, coil, the diameter size of coil, the cross sectional shape and the area of coil, adoption can set up according to actual need, need not be restricted to the utility model discloses the injeciton.

Example two

Referring to fig. 6, an embodiment of the present invention provides an electrical kitchen appliance 200, including: the wireless power supply device 100 according to the first embodiment comprises a transmitting host 210 and the wireless power supply device 100 according to the first embodiment, wherein the transmitting host 210 is provided with a transmitting coil L3, and the transmitting coil L3 is coupled with a receiving coil L1 in the wireless power supply device 100. The transmitting host 210 further includes a control module 220, and the control module 220 is connected to the commercial power and the transmitting coil L3 respectively.

It should be noted that, since the wireless power supply apparatus 100 in the present embodiment is based on the same inventive concept as the wireless power supply apparatus 100 provided in the first embodiment, the corresponding content in the first embodiment is also applicable to the present embodiment, and is not described in detail herein.

The transmitting host 210 may be a device provided independently from the wireless power supply device 100, or may be a device provided integrally with the wireless power supply device 100. For example, when designing a tailless kitchen appliance, the transmitting host 210 and the wireless power supply device 100 need to be separately disposed in two physical devices. The two physical devices may be placed separately or together. The two solid devices can be attached together on the surface or can be installed into a whole through mutually nested shells. The host launcher 210 with when wireless power supply unit 100 separately sets up in two entity devices, can realize the tailless of kitchen electricity, it can be safer to use, it is more convenient to accomodate and move, and kitchen table top can avoid more mixed and disorderly power cords to bring the hidden danger. In other embodiments, the setting position, the installation method, and the like of the transmitting host 210 can be set according to actual situations, and need not be limited by the embodiments of the present invention.

The transmitting coil L3 is coupled with the receiving coil L1 in the wireless power supply 100, and the transmitting coil L3 is also connected to the control module 220. The transmitting coil L3 is used to convert the high-voltage ac output by the control module 220 into magnetic energy, and provide a high-frequency alternating electromagnetic field, so that the receiving coil L1 can couple an ac sinusoidal voltage of kilohertz. Specifically, the shape of the transmitting coil L3 generally needs to be matched with the shape of the receiving coil L1, so as to improve the mutual inductance between the two coils, and further improve the efficiency of electric energy transmission and the transmission power under the condition of the same volume of the coils. For example, when the transmitting coil L3 is a flat coil disc, the receiving coil L1 should also be a flat coil disc, and the placing positions of the transmitting coil L3 and the receiving coil L1 need to be aligned in front. In other embodiments, the setting position of the transmitting coil L3, the winding manner, the overall shape of the coil, the diameter of the coil, the cross-sectional shape and area of the coil, the adopted material, etc. may be set according to actual needs, and need not be restricted to the embodiments of the present invention.

The control module 220 may be provided therein with a low voltage power supply circuit, a microprocessor or microcomputer with computing capability, a rectifying and filtering circuit, and a resonant sampling controller. One end of the low-voltage power supply circuit is connected with a mains supply, and the other end of the low-voltage power supply circuit is connected with the microprocessor or the microcomputer to supply power for the microprocessor or the microcomputer. Rectifier filter circuit one end with the commercial power is connected, the other end with transmitting coil L3 connects, transmitting coil L3's the other end with resonance sampling controller connects, resonance sampling controller with microprocessor or microcomputer connect. The microcontroller controls the resonance controller according to information such as current and voltage phases fed back by the resonance sampling controller, so that the control of the alternating electromagnetic field generated by the transmitting coil L3 is realized, and the commercial power is converted into stable alternating current power required by the transmitting coil L3.

The microprocessor or microcomputer can be used to set various parameters, obtain various parameters, store various parameters, receive various information, process various information, and send various information and instructions. The control module 220 is further provided therein with a storage medium, which stores a plurality of executable instructions and programs for data processing of the control module 220. The control module 220 may be a small single-chip microcomputer. In other embodiments, the specific model of the microprocessor or the microcomputer in the control module 220 may be set according to the actual requirement of the control module 220 for the data processing capability, and the specific circuit structure in the control module 220 may be set according to the actual requirement without being restricted by the embodiments of the present invention.

The control module 220 may be provided therein with a wireless module capable of communicating with the wireless communication module 152 and the outside. Specifically, the wireless module and the wireless communication module 152 perform wireless communication to obtain the operating status data of the wireless power supply apparatus 100. Or, a wireless module or a wireless function capable of performing wireless communication with the wireless module is arranged in a mobile terminal or a server, so that data transmission with the mobile terminal or the server is realized. Specifically, a certain communication protocol is provided in the wireless module, and may be, for example, a bluetooth communication protocol, a WiFi communication protocol, or the like. In some other embodiments, the physical device and the communication protocol specifically adopted by the wireless module can be set according to actual needs, and need not be restricted to the embodiments of the present invention. The wireless module can process, receive and transmit instructions and data from the wireless communication module 152 to the outside, and the wireless module can receive and transmit instructions and data from the outside.

The embodiment of the utility model provides a kitchen electrical equipment 200; the wireless power supply device 100 and the control module 220 are arranged in the kitchen electrical equipment 200, the kitchen electrical equipment 200 can convert alternating current mains supply into magnetic energy through the transmitting host 210, the magnetic energy is converted into high voltage and low voltage respectively through the receiving coil L1 and the auxiliary power taking coil L2, and then the high voltage load 160 and the low voltage load 150 are supplied with power respectively, the kitchen electrical equipment 200 does not need to specially set corresponding positions of the auxiliary power taking coil L2 and the transmitting coil L3, and the bit offset tolerance of the wireless power supply device 100 and the transmitting host 210 is high.

The embodiment of the utility model provides a wireless power supply unit and kitchen electrical equipment, this wireless power supply unit sets up in this kitchen electrical equipment; the wireless power supply device is characterized in that a receiving coil is wound on an insulating framework, an auxiliary magnetizer is arranged to guide and gather magnetic lines generated by alternating current in the receiving coil, and an auxiliary power taking coil is wound on the auxiliary magnetizer to generate induced electromotive force through the magnetic flux changing inside the auxiliary magnetic conducting strip so as to provide electric energy. The wireless power supply device is simple in structure and capable of isolating and outputting high-voltage electricity and low-voltage electricity, so that power is supplied to a high-voltage load and a low-voltage load respectively, the wireless power supply device does not need to specially set corresponding positions of the auxiliary power taking coil and the transmitting coil, and the wireless power supply device and the transmitting host are high in tolerance of bit offset.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or technical features in areas thereof may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its various embodiments.

Claims (10)

1. A wireless power supply apparatus, comprising:

an insulating framework;

the receiving coil is wound in the insulating framework and used for coupling energy and providing power supply for a load;

the auxiliary magnetizer is used for guiding and converging the magnetic lines generated by the receiving coil;

and the auxiliary power taking coil is wound on the auxiliary magnetizer and is used for coupling the magnetic lines guided and converged by the auxiliary magnetizer to generate an induction power supply.

2. The wireless power supply device according to claim 1, wherein the auxiliary magnetic conductor is disposed perpendicular to a winding direction or a winding tangent direction of the receiving coil.

3. The wireless power supply device according to claim 2, wherein the insulating frame has a disk shape, one surface of the insulating frame is provided with the receiving coil, and the other surface of the insulating frame is provided with at least one auxiliary magnetizer in a uniform arrangement.

4. The wireless power supply apparatus according to any one of claims 1 to 3, further comprising:

the high-voltage power supply circuit is connected with the receiving coil and used for providing power supply for a high-voltage load;

and the low-voltage power supply circuit is connected with the auxiliary power taking coil and is used for providing a power supply for a low-voltage load.

5. The wireless power supply apparatus according to claim 4,

the high voltage power supply circuit includes:

the first rectifying and filtering circuit is connected with the receiving coil;

and the sampling circuit is connected with the first rectifying and filtering circuit.

6. The wireless power supply apparatus according to claim 4,

the low voltage power supply circuit includes:

the second rectification filter circuit is connected with the auxiliary power taking coil;

and the voltage reduction circuit is connected with the second rectification filter circuit.

7. The wireless power supply apparatus according to claim 6,

the low-voltage power supply circuit further comprises a voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the voltage reducing circuit.

8. The wireless power supply apparatus according to claim 7,

the wireless power supply device further comprises a controller, and the controller is connected with the voltage stabilizing circuit.

9. The wireless power supply apparatus according to claim 8,

the wireless power supply device further comprises a wireless communication module, and the wireless communication module is connected with the controller.

10. A kitchen electrical appliance, comprising: the wireless power supply device of any one of claims 1-9 and a transmitting master, the transmitting master being provided with a transmitting coil, the transmitting coil being coupled with a receiving coil in the wireless power supply device.