The utility model content
The purpose of this utility model is to provide a kind of wireless charging system, utilizes the mode of wireless charging to charge for portable electronic device, changes the law of electric charges that electronic installation and charger interface must mate.
The technical solution of the utility model is as follows:
A kind of wireless charging system comprises electric supply installation and power device, wherein,
Described electric supply installation comprises power supply linkage unit, frequency adjustment unit and the main coil unit that connects successively; Described power device comprises functional unit, voltage regulation unit and the inferior coil unit that connects successively;
The power connector unit of described electric supply installation is connected described electric supply installation with power supply, the electric current that receives is sent to described frequency adjustment unit; Described frequency adjustment unit is the electric current of the alternation of characteristic frequency with the current conversion that receives, and sends to described main coil unit; The electric current of the alternation of characteristic frequency produces the magnetic field that changes with characteristic frequency in the described main coil unit;
The inferior coil unit of described power device produces the induced current of alternation in the alternating magnetic field of described main coil unit, described voltage regulation unit sends to the power supply circuits or the rechargeable battery of described functional unit with the operating voltage of power device after with the induced current rectifying and wave-filtering.
Compared with prior art, the utility model provides a kind of wireless charging system.Electric supply installation in the wireless charging system comprises the main line figure unit that can produce alternating magnetic field, and the power device of wireless charging system comprises the inferior coil unit of the alternating current of can inducting in the magnetic field that the main coil unit changes; Electric supply installation of the present utility model and power device are realized the transmission of electric energy by electromagnetic induction, do not need specific interface just can realize the supply of electric energy between electric supply installation and the power device, abandoned prior art electric supply installation and power device must could be realized power supply after Interface Matching drawback; And electric supply installation of the present utility model can be the different power device power supply of operating voltage, highly versatile; Electric supply installation of the utility model just can be powered for various power devices, and is for the user has saved the fund of buying multiple electric supply installation, convenient for users to use.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
The wireless charging system that the utility model provides as shown in Figure 1, comprises electric supply installation 100 and power device 200; Described electric supply installation 100 comprises power supply linkage unit 110, frequency adjustment unit 120 and the main coil unit 130 that connects successively; Described power device 200 comprise successively the functional unit 210 that connects, voltage regulation unit 220 and inferior coil unit 230; Described main coil unit 130 produces alternating magnetic fields, described coil unit 230 produces the induced current of alternation in described main coil 113 alternating magnetic fields, described voltage regulation unit 220 with the induced current rectifying and wave-filtering after, be described functional unit 210 power supplies with the operating voltage of power device.Electric supply installation 100 described in the utility model and power device 200 are realized the wireless transmission of electric energy by the electromagnetic induction between described main coil unit 130 and the inferior coil unit 230.
Power device 200 described in the utility model can be various electronic installations such as mobile phone, MP3, video player, PDA, digital camera, shaver, notebook computer, described electronic installation can also comprise chargeable rechargeable battery, described rechargeable battery can be lithium ion battery, Ni-MH battery, nickel-cadmium cell, oxide cell or the like, and the voltage of rechargeable battery has 1.2V, 2V, 3.0V, 3.75V or the like to have nothing in common with each other.
Described functional unit 210 is different and different according to power device 200, and with respect to mobile phone, described functional unit 210 is exactly that mobile phone signal is collected and transmitting element; With respect to MP3, described functional unit 210 is exactly an audio playing unit, repeats no more here.Described functional unit 210 can also comprise chargeable rechargeable battery.
The voltage regulation unit 220 of power device 200 described in the utility model is converted to required voltage and the direct current of described functional unit 210 work with the alternating current on the inferior coil unit 230.Described voltage regulation unit 220 can directly be described functional unit 210 power supplies, also the electric current after the voltage stabilizing can be flowed to the rechargeable battery in the described functional unit 210, is the charging of the rechargeable battery in the described functional unit 210.Described voltage regulation unit 220 can comprise rectification module and/or filtration module, and whole voltage regulation unit can be set to thin chip, and this technology is a prior art.
Described time coil unit 230 comprises time coil 231, can also comprise second magnetic core 232; If described coil unit 230 comprises second magnetic core 232, described time coil 231 is wrapped on described second magnetic core 232; Described coil 231 is used for obtaining alternating current at alternating magnetic field by the electromagnetic induction effect, and described second magnetic core 232 can improve the electromagnetic induction efficient of described coil 231.Described time coil 231 can be FPCB, PCB, coil and ferrite, is shaped as circle, quadrangle or polygon.
First embodiment of power device 200 described in the utility model, as shown in Figure 2, the voltage regulation unit of described power device 200 and 220 and time coil unit 230 be arranged on the thin slice 240 that insulating material makes.240 carryings of described thin slice described around inferior coil 231 and the voltage regulation unit 220 of thin chip type, two power supply connectors 233 are drawn by described voltage regulation unit 220 in the two ends of described coil 231.Described thin slice 240 also can a load-carrying ring around inferior coil 231, described voltage regulation unit 220 is arranged on the functional unit 210.
Described coil 231 and voltage regulation unit 220 are arranged on the thin slice 240 that insulating material makes, this has just constituted the main wireless charging parts of described power device 200, just the wireless charging parts can be made into sheet type, be easy to like this be installed on the functional unit of existing power device, can easily the power device of wired charging be upgraded to the power device of wireless charging.Described thin slice 240 can be by screw on described power device 200.
Described thin slice 240 can be a pad pasting, described pad pasting and time coil back to the surface on adhesive sticker is set, make described coil 231 stick on the surface of described power device 200 or the surface of described power device 200 rechargeable batteries by adhesive sticker.Described two power supply connectors 233 can be connected in the supply line of power device 200 or on the charging terminal of rechargeable battery.
Described coil 231 can be around the home individual layer multiturn coil on the pad pasting plane, as shown in Figure 2.Described coil 231 also can be on described pad pasting 210 around the home the multilayer multiturn coil or the coil of three-dimensional spiral surrounding, as shown in Figure 3.It is a plurality of that described in the utility model coil 231 can also have, and is tiled in respectively by serial or parallel connection on the surface of described pad pasting 230, as shown in Figure 4.
Described second magnetic core 232 is set on the pad pasting described in the utility model, and described coil 231 has following several around the mode of described second magnetic core 232.At first, described second magnetic core 232 can be arranged on the described pad pasting by the individual layer multiturn, and described time coil 231 is wrapped on described second magnetic core 232, as shown in Figure 5 with spiral.Secondly, if described pad pasting is a strip, described second magnetic core 232 can be set to corresponding strip thin slice, and described time coil 231 is wrapped on described strip thin slice second magnetic core 232, as shown in Figure 6.
Voltage regulation unit 220 and time coil unit 230 in the power device 200 described in the utility model can be arranged on the pad pasting, pad pasting thickness is little, and conveniently pad pasting 210 is arranged on the surface of power device 200 and the surface of power device 200 rechargeable batteries, if particularly on the pad pasting 210 adhesive sticker is set, just the pad pasting that has time coil can easily be attached to the surface of power device or rechargeable battery, conveniently on existing power device, increase the parts that are used for wireless charging.
The described power supply linkage unit 110 of electric supply installation 100 described in the utility model is used for connecting with power supply, and the power supply of described electric supply installation 100 can be direct current, alternating current, can be dry cell, rechargeable battery, solar cell, and concrete form does not limit.Described power connector unit 110 is connected described electric supply installation 100 with power supply, further described power supply linkage unit can comprise rectification module and/or filtration module.Described power supply linkage unit 110 can carry out rectification and/or filtering to source current, and the electric current after will handling sends to described frequency adjustment unit 120.Described frequency adjustment unit 120 is the electric current of characteristic frequency with the current conversion that receives and sends to described main coil unit 130.What described frequency adjustment unit 120 was concrete can comprise PWM controller or oscillating circuit.Described main coil unit 130 comprises main coil 131, and the electric current with the characteristic frequency alternation in the described main coil 131 produces the magnetic field that changes with characteristic frequency.
Electric supply installation 100 described in the utility model comprises the shell 140 that is used to carry described power device 200, be provided with in the described shell 140 around multiturn main coil 131, as shown in Figure 7.First kind of embodiment of main coils 131 in the described shell 140, described main coil 311 perpendicular to the transverse cross-section parallel of the magnetic line of force in the surface that described shell 140 is placed described power device 200, as shown in Figure 7.Among first kind of embodiment, the power device 200 that is provided with time coil 231 is placed on described shell 330 places on the surface of described power device, described coil 231 and described main coil 311 are parallel to each other perpendicular to magnetic line of force cross section.
Second kind of embodiment of main coil 131 in the described shell 140, can groove be set on the surface that described shell 140 is placed described power device, as described in Figure 8, the groove of described shell 140 is positioned at described main coil 131 inside, the described power device 200 that has time coil 231 is positioned in the groove of described shell 140, the parallel axes of described coil 231 and described main coil 131 can improve the electromagnetic induction efficient of described coil 231 and main coil 131.
The third embodiment of main coil 131 in the described shell 140, described main coil unit 130 also comprises first magnetic core 132, described main coil 131 is looped around on described first magnetic core 132.Described first magnetic core 132 can be the toroidal core with opening, as shown in Figure 9, the surface that described shell 140 is placed power device 200 is provided with and the suitable groove of described toroidal core 132 openings, the described power device 200 that has time coil 231 pad pastings is positioned in the groove of described shell 140, the inferior coil 231 of power device 200 is positioned on the flux path of toroidal core, be in described first magnetic core 132 the alternation magnetic power perpendicular to the cross section of described coil 231, to improve the efficient of described main coil 131 and time coil 231 electromagnetic induction.
The principle of described main coil 131 that has first magnetic core 132 and described inferior coil 231 electromagnetic induction that have second magnetic core 232 as shown in figure 10, the two ends of the two ends of described first magnetic core 132 and described second magnetic core 232 are in contact with one another, make two magnetic cores form a common magnetic core, described common magnetic core is as the medium of magnetic line of force closed magnetic loop, described coil 231 is positioned at the scope of described main coil 131 alternating magnetic fields, and the high magnetic conductivity of magnetic core improves electromagnetic induction efficient between described main coil 131 and the inferior coil 231.Described main coil 131 can use twisted wire, the mode of main coil 131 spiral surroundings can be the spiral of rule close around, also can be disorderly around, around mode do not limit.
Wireless charging system of the present utility model, feed the electric current that changes with characteristic frequency by the main coil in electric supply installation, main coil produces alternating magnetic fields, and the inferior coil on the wireless charging system power device pad pasting is arranged in the electric current that the main coil alternating magnetic fields can produce alternation; Inferior coil on the described power device sticks on the surface of power device surface or power device rechargeable battery by the adhesive sticker on the pad pasting, and being convenient to existing power device increases the wireless charging parts; The inferior coil of power device is placed with the alternating magnetic field scope of electric supply installation is interior and just can be charged, electric supply installation charges to power device and is not subjected to the restriction of special interface, be not subjected to the different restriction of power device operating voltage, an electric supply installation can be a plurality of different power devices power supplies or charging, easy to use, versatility is good.
Should be understood that above-mentioned statement at the utility model preferred embodiment is comparatively detailed, can not therefore think the restriction to the utility model scope of patent protection, scope of patent protection of the present utility model should be as the criterion with claims.