TWM510005U - Wireless charging device - Google Patents

Abstract

A wireless charging device is disclosed and includes a main body, at least one thin-film transmitter coil assembly, at least one transmission module, a shielding device, a carrying unit and a control unit. The thin-film transmitter coil assembly is disposed in the main body and includes at least one antenna for transmitting an electromagnetic wave with at least one frequency. The transmission module is electrically connected with the thin-film transmitter coil assembly and a power source for receiving electric energy and providing AC signal to the thin-film transmitter coil assembly. The shielding device is configured to cover at least portion of the antenna of the thin-film transmitter coil assembly for suppressing divergence of the electromagnetic wave. The carrying unit carries at least one powered device to be loaded into or removed out from a receiving space of the main body. The control unit is electrically connected with the transmission module and controls the operation of the transmission module according to whether the powered device is loaded into the receiving space by the carrying unit.

Description

Wireless charging device 【0001】

The present invention relates to a wireless charging device, and more particularly to a wireless charging device that can automatically perform a wireless charging operation when the power receiving device is loaded on the body thereof and can suppress electromagnetic wave leakage.

【0002】

Various portable electronic devices, such as mobile phones and tablet computers, have been widely used in daily life. In order to provide the power required for the operation of the portable electronic device, the internal battery of the charger must be charged by the charger. Since the wireless charging device can be applied to various use environments and is not limited by the power cord, it is convenient for the user to perform charging applications, and thus the wireless charging device has been gradually developed to replace the use of the wired charger.

[0003]

Wireless charging, also known as inductive charging or non-contact charging, provides energy from a power supply device to a powered device by wireless means. At present, the wireless charging technology is generally divided into three camps, the Wireless Power Consortium (WPC), the Power Matters Alliance (PMA), and the Wireless Power Alliance A4WP (Alliance For Wireless Power), among which WPC, The A4WP alliance is the mainstream, and the wireless charging method uses magnetic induction (low frequency) and magnetic resonance (high frequency) technologies. The magnetic induction mode can only be used for short-distance transmission and the power-receiving device needs to be attached to the power supply device. The power conversion efficiency is high, but it is difficult to realize charging of multiple power-receiving devices at the same time. Magnetic resonance is to let the transmitting end and the receiving end reach a certain resonance frequency, so that both sides can form a magnetic resonance phenomenon, and the energy transmission is achieved in this way. Compared with the magnetic induction method, the magnetic resonance method can realize charging over a long distance.

[0004]

Fig. 1 is a diagram showing a conventional wireless charging device for wirelessly charging a power receiving device. As shown in FIG. 1, the wireless charging device 11 wirelessly transmits energy to the power receiving device 12. Generally, the coil component of the wireless charging device 11 usually uses a multi-core copper wire coil and the copper wire coil is placed on the hard iron. The oxy-magnetic oxide substrate is mounted in the plate-shaped casing, and the power receiving device 12 can be charged only outside one of the wireless charging devices 11. The wireless charging device 11 further has a switching element 13 that allows the wireless charging device 11 to charge or stop charging the power receiving device 12 by manually switching the switching element 13 in an on and off state. However, the conventional wireless charging device 11 needs to manually switch the switching element 13 to start the wireless charging operation, and cannot automatically perform the charging operation when the power receiving device 12 is placed in the charging area, thereby causing inconvenience in use. In addition, the conventional wireless charging device 11 cannot ensure that the charging operation is started when the power receiving device 12 is placed in the effective charging area, which will cause loss of energy. Furthermore, the electromagnetic wave emitted by the coil component of the conventional wireless charging device 11 is diverged to the periphery, which may cause the user to be injured by electromagnetic waves, especially the high-energy electromagnetic wave emission requirement applied to the high-watt power receiving device, and the wireless charging device 11 The charging efficiency cannot be effectively raised

[0005]

In addition, when the wireless charging device 11 is placed in the vehicle body, since the power receiving device 12 placed above the wireless charging device 11 is in an open space, the vehicle body may sway during driving, causing the power receiving device 12 to slip, thereby causing the power receiving device. 12 damaged. Furthermore, the electromagnetic waves emitted by the coil components of the wireless charging device 11 are diverged to the periphery, which may cause the user to be damaged by electromagnetic waves, and the charging efficiency of the wireless charging device 11 cannot be effectively improved.

[0006]

In addition, due to the different technologies used in the existing wireless charging devices, the coupling frequency of the coil components and the circuit design of the transmitting end are also different, resulting in incompatibility of the respective specifications of the products and incapability of sharing the components. Due to the incompatibility factor, the wireless charging device cannot use the same coil component and circuit component, so that various portable electronic devices need to use various customized wireless charging devices, which reduces the advantages and versatility of the wireless charging device. And it is not possible to wirelessly charge a plurality of power receiving devices using different wireless charging technologies with a single wireless charging device.

【0007】

The purpose of the present invention is to provide a wireless charging device that can automatically perform a wireless charging operation when the power receiving device is loaded into the body thereof, can suppress electromagnetic wave divergence to reduce electromagnetic wave damage to the user, and can concentrate electromagnetic waves to a charging area to one Or a plurality of power receiving devices perform non-contact charging, and the electromagnetic wave amount is enhanced to improve the charging performance.

[0008]

Another object of the present invention is to provide a wireless charging device that can be adapted for use in a vehicle body, which can emit electromagnetic waves of more than one different frequency, and has an accommodation space for one or more electromagnetic waves that can receive the same frequency or different frequencies. The power receiving device is placed, and the one or more power receiving devices can be wirelessly charged simultaneously or time-divisionally and effectively in the accommodating space, which can increase versatility and convenience of use.

【0009】

Another object of the present invention is to provide a wireless charging device that can adaptively or selectively switch between wireless charging using magnetic resonance coupling or magnetic induction, and achieve the aforementioned effects.

[0010]

In order to achieve the above object, a preferred embodiment of the present invention provides a wireless charging device for wirelessly charging one or more power receiving devices. The wireless charging device includes a body, at least one set of transmitting thin film coil elements, at least one set of transmitting modules, a shielding element, a loading unit, and a control unit. The body has an accommodation space and an opening. The transmitting film coil component is disposed in the body and includes at least one antenna to be configured to emit electromagnetic waves of a specific frequency or a plurality of different frequencies. The transmitting module is electrically connected between the transmitting film coil component and the power source to receive the power provided by the power source and provide an alternating current signal to the transmitting film coil component. The shielding component is attached to the outer surface of the body or disposed in the body and at least partially covers the antenna of the transmitting film coil component to block electromagnetic waves from divulging outside the body. The loading unit is disposed in the accommodating space of the body, and is configured to carry the power receiving device and move the power receiving device into or out of the accommodating space of the body. The control unit is electrically connected to the transmitting module, and controls the operation of the transmitting module according to whether the carrying unit moves the power receiving device into the receiving space.

[0034]

11‧‧‧Wireless charging device
12‧‧‧Power-receiving device
13‧‧‧Switching elements
2‧‧‧Wireless charging system
3‧‧‧Wireless charging device
4, 4'‧‧‧Power-receiving devices
5‧‧‧Power supply
6‧‧‧ body
30‧‧‧Ontology
31‧‧‧Transmitting film coil components
32‧‧‧Transmission module
33‧‧‧Shielding components
34‧‧‧Loading unit
35‧‧‧Control unit
36‧‧‧Drive unit
37‧‧‧Sensor unit
38‧‧‧Protective layer
391‧‧‧First switching circuit
392‧‧‧Second switching circuit
301‧‧‧ accommodating space
302‧‧‧ openings
311‧‧‧Flexible substrate
311a‧‧‧ first side
311b‧‧‧ second side
312‧‧‧ oscillating antenna
313‧‧‧Resonant antenna
313a‧‧‧ first end
313b‧‧‧ second end
316‧‧‧ capacitor
321‧‧‧Power conversion circuit
322‧‧‧Oscillator
323‧‧‧Power Amplifier
324‧‧‧Filter circuit
333‧‧‧ Grid unit
334, 335‧‧‧Metal microwire
4a, 4a'‧‧‧ Wireless Charging Receiver
4b, 4b'‧‧‧ load
41, 41'‧‧‧ Receiving film coil components
42, 42'‧‧‧ receiving module
43‧‧‧Connector
421‧‧‧Filter circuit
422‧‧‧Rectifier circuit
423‧‧‧ Voltage regulator circuit
424‧‧‧DC voltage adjustment circuit
61‧‧‧ accommodating slots
C ₁₁ , C ₁₂ ‧ ‧ first capacitor
C ₂₁ , C ₂₂ ‧ ‧ second capacitor
S ₁₁ , S ₁₂ ‧‧‧ first switching element
S ₂₁ , S ₂₂ ‧‧‧ second switching element
S1‧‧‧ control signal
D‧‧‧ spacing
P ₁ ‧‧‧ first position
P ₂ ‧‧‧second position

[0011]

Fig. 1 is a diagram showing a conventional wireless charging device for wirelessly charging a power receiving device.
Figure 2 is a schematic structural view of the wireless charging system of the present invention.
Fig. 3 is a schematic diagram showing the structure of the wireless charging device shown in Fig. 2.
Fig. 4 is a schematic view showing the structure of the power receiving device shown in Fig. 2.
Fig. 5A is a cross-sectional view of the wireless charging device shown in Fig. 3 on the wall thereof.
Fig. 5B is a view showing the relationship between the transmitting film coil element and the shielding member of Fig. 5A.
Fig. 6A is a cross-sectional view showing another variation of the wireless charging device of the present invention in a wall thereof.
Fig. 6B is a view showing the relationship between the transmitting film coil component of Fig. 6A and the shield member.
Fig. 7A is a cross-sectional view showing another variation of the wireless charging device of the present invention in a wall thereof.
Fig. 7B is a view showing the relationship between the transmitting film coil component and the shielding member of Fig. 7A.
Fig. 8 is a schematic structural view showing an example of a shield member shown in Fig. 2.
Figure 9 is a circuit block diagram of a transmitting module of the wireless charging device shown in Figure 3.
Fig. 10 is a circuit block diagram of a receiving module of the power receiving device shown in Fig. 4.
Fig. 11 is a view showing the structure of an example of the power receiving apparatus of Fig. 4.
Figure 12 is a block diagram showing a circuit of a variation of the wireless charging system of the present invention.
Fig. 13 is a view showing the structure of a first application example of the wireless charging device of the present invention.
Fig. 14 is a view showing the structure of a second application example of the wireless charging device of the present invention.
Fig. 15 is a view showing the structure of a third application example of the wireless charging device of the present invention.
Fig. 16 is a view showing the structure of a fourth application example of the wireless charging device of the present invention.

[0012]

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and drawings are intended to be illustrative and not limiting.

[0013]

2 is a schematic structural view of a wireless charging system of the present invention, FIG. 3 is a schematic structural view of the wireless charging device shown in FIG. 2, and FIG. 4 is a schematic structural view of the power receiving device shown in FIG. 2, FIG. 5A Figure 3 is a cross-sectional view of the wireless charging device shown in Figure 3, and Figure 5B is a view showing the relationship between the transmitting film coil component and the shielding member of Figure 5A. As shown in Figures 2, 3, 4, 5A and 5B, the wireless charging system 2 of the present invention includes a wireless charging device 3 and at least one power receiving device 4, wherein the wireless charging device 3 is connected to a power source 5 (such as but not limited to an AC Mains, either external or built-in battery cells, and can emit electromagnetic waves of a specific (single) frequency or broadband (multiple different frequencies) (such as, but not limited to, electromagnetic waves with a frequency range of 60 Hz to 300 GHz) to utilize magnetic The resonant (high frequency) or magnetic induction (low frequency) mode wirelessly charges one or more powered devices 4 (such as, but not limited to, mobile phones, tablets, electrical products) that receive electromagnetic waves of the same or different frequencies.

[0014]

The wireless charging device 3 of the present invention comprises a body 30, at least one set of transmitting film coil elements 31, at least one set of transmitting modules 32, shielding elements 33, a loading unit 34 and a control unit 35. The body 30 is a housing having an accommodation space 301, an opening 302, and a wall 303. The accommodating space 301 of the body 30 is configured as a charging area, and can accommodate one or a plurality of power receiving devices 4 for wireless charging. Each of the set of transmitting film coil elements 31 is disposed in the body 30 and located in the wall 303, and is electrically connected to the corresponding transmitting module 32. The transmitting film coil element 31 is configured as a transmitting end of the wireless charging device 3. The transmitting module 32 is electrically connected between the power source 5 and the corresponding transmitting film coil component 31 to receive the power provided by the power source 5 and generate an alternating current signal to the corresponding transmitting film coil component 31. The shielding member 33 is at least partially attached to the outer surface of the wall body 303 of the body 30, and at least partially encloses the transmitting film coil member 31, whereby the electromagnetic waves blocking the transmitting film coil member 31 are diverged outwardly, and The electromagnetic waves may be concentrated toward the accommodating space 301 of the body 30 to wirelessly charge one or a plurality of power receiving devices 4 accommodated in the accommodating space 301. The loading unit 34 is disposed in the accommodating space 302 of the main body 30 and is configured to carry the power receiving device 4 and move the power receiving device 4 to the first position P ₁ or the second position P ₂ , that is, the power receiving device 4 is moved into the body 30 . The accommodating space 301 (ie, the first position P ₁ ) or the accommodating space 301 of the body 30 (ie, the second position P ₂ ). The control unit 35 is electrically connected to the transmitting module 32, and controls the operation of the transmitting module 32 according to whether the power receiving device 4 moves the power receiving device 4 into the receiving space 301 of the body 30.

[0015]

In some embodiments, the wireless charging device 3 further includes a driving unit 36 disposed inside the body 30 and electrically connected to the loading unit 34 and the control unit 35. The driving unit 36 drives the loading unit 34 to operate according to the control of the control unit 35, so that the loading unit 34 automatically moves into the accommodating space 301 of the body 30 (ie, the first position P ₁ ) or moves out of the receiving space of the body 30. 301 (ie, the second position P ₂ ). In other embodiments, the wireless charging device 3 can also omit the driving unit 36, and the loading unit 34 can be moved into the accommodating space 301 of the body 30 (ie, the first position P ₁ ) or removed according to the pushing and pulling force of the user. The housing 30 houses the space 301 (ie, the second position P ₂ ).

[0016]

In some embodiments, the wireless charging device 3 further includes a sensing unit 37 electrically connected to the control unit 35. The sensing unit 37 can sense whether the loading unit 34 carries the power receiving unit 4 and transfers it to the accommodating space 301 of the body 30 (ie, the first position P ₁ ), and accordingly sends a sensing signal to the control unit 35. When the detail, when the sensing unit 37 sense the carrier shift unit 34 carries the power receiving device 4 and the power receiving device 4 is transferred to the accommodating space of the body 30 of the 301 (i.e., a first position P _1), the sensing unit 37 emits REPRESENTATIVE The sensing signal can be sent to the control unit 35. The control unit 35 sends the control signal S1 to the transmitting module 32 according to the sensing signal, so that the operation of the transmitting module 32 can be performed. In this case, the transmitting film coil element 31 of the wireless charging device 3 emits electromagnetic waves, so that the wireless charging device 3 can be automatically activated to wirelessly charge the power receiving device 4. In addition, when the sensing unit 37 senses that the loading unit 34 does not carry the power receiving device 4, the loading unit 34 does not transfer the power receiving device 4 to the accommodating space 301 of the body 30 (ie, not at the first position P ₁ ), or shifts the load. When the unit 34 moves the power receiving device 4 out of the accommodating space 301 of the body 30 (ie, moves to the second position P ₂ ), the sensing unit 37 sends a sensing signal representing the disable to the control unit 35, and the control unit 35 according to the sensing. The signal sends a control signal S1 to the transmitting module 32 to stop the operation of the transmitting module 32. In this case, the transmitting film coil element 31 of the wireless charging device 3 does not emit electromagnetic waves, so that the wireless charging operation is not performed and the energy loss can be reduced. In some embodiments, the sensing unit 37 can be, but is not limited to, a mechanical trigger sensor, an optical sensor, or a pressure sensor.

[0017]

In one embodiment, the wireless charging device 3 includes a set of transmitting film coil elements 31 and a set of transmitting modules 32, whereby the wireless charging device 3 can emit electromagnetic waves of a specific frequency to wirelessly charge the power receiving device 4. In other embodiments, the wireless charging device 3 includes a multi-array transmitting film coil component 31 and a multi-array transmitting module 32, wherein each of the transmitting thin film coil components 31 is electrically connected to a corresponding transmitting module 32. The wireless charging device 3 can emit electromagnetic waves of a specific frequency or a plurality of different frequencies to wirelessly charge one or more power receiving devices 4 that can receive electromagnetic waves of the same frequency or different frequencies simultaneously or time-divisionally.

[0018]

In this embodiment, each set of the transmitting film coil elements 31 is flexible and disposed in the wall 303 of the body 30. The transmitting film coil component 31 includes a flexible substrate 311, a oscillating antenna 312, and a resonant antenna 313. The oscillating antenna 312 and the resonant antenna 313 are disposed on opposite sides of the flexible substrate 311. In detail, the flexible substrate 311 has a first surface. The first surface 311a and the second surface 311b are opposite to each other, and the oscillating antenna 312 and the resonant antenna 313 are respectively disposed on the first surface 311a and the second surface 311b of the flexible substrate 311. The two ends of the resonant antenna 313 (ie, the first end 313a and the second end 313b) are connected to one or more capacitors 316, and the two ends of the oscillating antenna 312 are connected to the transmitting module 32. When the wireless charging device 3 passes an AC signal to the oscillating antenna 312 of the transmitting film coil component 31 via its transmitting module 32, the oscillating antenna 312 is coupled to the resonant antenna 313, and the electromagnetic wave and the received power are transmitted at a specific frequency. The receiving film coil component 41 of the wireless charging receiver 4a of the device 4 is coupled, and the power is outputted to the load 4b via the receiving module 42 (as shown in FIG. 4) to wirelessly charge the power receiving device 4.

[0019]

In some embodiments, as shown in FIGS. 5A and 5B, the wireless charging device 3 further includes a protective layer 38 that is at least partially attached to the outer surface of the shielding member 33 to protect the shielding member 33. In some embodiments, the protective layer 38 may be composed of a protective coating, which may be selected from the group consisting of epoxy resin, acrylic silicone rubber, polyurethane rubber, ethylene-vinyl acetate copolymer rubber, polyamide rubber, rubber rubber. , polyolefin adhesive, moisture-curing polyurethane adhesive or silicone rubber, and not limited to this.

[0020]

In the present embodiment, as shown in the second, fifth, and fifth embodiments, the wireless charging device 3 includes the resonant antenna 313 and the flexible substrate 311 in sequence from the accommodating space 301 of the body 30 to the outer surface of the wall 303. The oscillating antenna 312, the shielding element 33, and the protective layer 38 are provided. In other words, the transmitting film coil component 31 is disposed in the wall 303, and the resonant antenna 313 is adjacent to the accommodating space 301. The flexible substrate 311 is located between the resonant antenna 313 and the oscillating antenna 312. The oscillating antenna 312 is adjacent to the oscillating antenna 312. The outer surface of the wall 303 is located between the resonant antenna 313 and the shielding member 33. The shielding member 33 is attached to the outer surface of the wall 303 and at least partially covers the resonant antenna 313 of the transmitting film coil element 31 and the oscillating antenna 312. In the present embodiment, as shown in FIG. 8, the shielding member 33 is a metal mesh film, which is suitable for blocking electromagnetic waves of higher frequencies to diverge outward, for example, blocking the first specific frequency or higher (for example, The electromagnetic wave of 6 MHz or more is diverging outward. The metal mesh film is made of a metal or metal composite material, wherein the metal or metal composite material is selected from the group consisting of copper, gold, silver, aluminum, tungsten, chromium, titanium, indium, tin, nickel, iron or at least two thereof. The metal compound composed of the above is not limited thereto. The metal mesh film has a grid pattern including a plurality of grid cells 333, wherein two adjacent but non-contiguous metal microwires 334, 335 of each grid cell 333 have a pitch d, the pitch d is smaller than the wavelength of the electromagnetic wave emitted from the thin film coil unit 31. In other embodiments, the shielding member 33 is a magnetic conductive film made of a soft magnetic material such as, but not limited to, ferrite, zinc-nickel ferrite (NiZn), zinc ferromanganese. The oxygen (MgZn) or the iron-bismuth aluminum alloy is formed of a bonding material, and is suitable for blocking the electromagnetic wave of a lower frequency to diverge outward, for example, blocking between the first specific frequency and the second specific frequency (for example, between 60 Hz and 20 MHz) The electromagnetic waves between the two are diverging outward. In other embodiments, the shielding element 33 is a composite film that combines a metal mesh film with a magnetically permeable film to block electromagnetic waves that diverge outward in all frequency ranges (eg, between 60 Hz and 300 GHz).

[0021]

In some embodiments, the first surface 311a and the second surface 311b of the flexible substrate 311 respectively include a bonding layer (not shown), and the oscillating antenna 312 and the resonant antenna 313 are respectively conductive materials and have a bonding layer thereof. The first surface 311a and the second surface 311b of the flexible substrate 311 are disposed. The bonding layer may be a light curing, thermal curing or other bonding material having curing characteristics, and other bonding materials having curing characteristics may be, but not limited to, an ethylene-vinyl acetate copolymer system. Glue, polyamide adhesive, rubber adhesive, polyolefin adhesive or moisture hardened polyurethane adhesive. In some embodiments, the bonding layer may be mixed with a magnetic material in addition to the above-mentioned cured bonding material, wherein the magnetic material may be, for example, but not limited to, ferromagnetic particles mixed in the cured bonding material. In other embodiments, the flexible substrate 311 can be replaced by the aforementioned bonding layer.

[0022]

In some embodiments, the material of the flexible substrate 311 may be selected from the group consisting of polyethylene terephthalate (PET), thin glass, polyethylene naphthalate (PEN), and polyether (Polyethersulfone). , PES), polymethylmethacrylat (PMMA), polyimide (Polyimide, PI) or polycarbonate (Polycarbonate, PC), and not limited thereto. In some embodiments, the oscillating antenna 312 and the resonant antenna 313 can be, but are not limited to, a single loop or a multi-loop antenna, and the shape of the loop includes, but is not limited to, a circle, an ellipse, or a rectangle. The oscillating antenna 312 and the resonant antenna 313 are respectively made of a conductive material, wherein the conductive material may be selected from silver (Ag), copper (Cu), gold (Au), aluminum (Al), tin (Sn) or graphene. And not limited to this.

[0023]

Fig. 6A is a cross-sectional view showing another embodiment of the wireless charging device of the present invention in a wall thereof, and Fig. 6B is a view showing a relationship between the transmitting film coil member and the shielding member of Fig. 6A. In some embodiments, as shown in FIGS. 6A and 6B, the transmitting film coil component 31 further includes a first protective layer 314 and a second protective layer in addition to the flexible substrate 311, the oscillating antenna 312, and the resonant antenna 313. 315, wherein the first protection layer 314 and the second protection layer 315 respectively cover the oscillating antenna 312 and the resonant antenna 313, that is, the first protection layer 314 and the second protection layer 315 are respectively located in the oscillating antenna 312 and the resonant antenna 313. Outside. In some embodiments, the shielding element 33 can be disposed in the body 30 and located within the wall 303 and between the oscillating antenna 312 of the transmitting film coil component 31 and the first protective layer 314. Alternatively, as shown in FIGS. 7A and 7B, the shielding member 33 may also be disposed in the body 30 and located in the wall 303 and on the outer side of the first protective layer 314 of the transmitting film coil member 31. In this embodiment, the materials of the first protective layer 314 and the second protective layer 315 may be the same as the foregoing protective layer 38, and details are not described herein again.

[0024]

In some embodiments, as shown in FIG. 9, the wireless charging device 3 includes one or more sets of transmitting modules 32, wherein each set of transmitting modules 32 is electrically connected to the corresponding transmitting film coil component 31, and A power conversion circuit 321, an oscillator 322, a power amplifier 323, and a filter circuit 324 are included. The power conversion circuit 321 is electrically connected to the power source 5 and is connected to the oscillator 322 and the power amplifier 323. Further, the power conversion circuit 321 is further electrically connected to the control unit 35 to receive the control signal S1 sent by the control unit 35. The power conversion circuit 321 can be operated or stopped according to the control of the control unit 35. When enabled, the power conversion circuit 321 can convert and supply power provided by the power source 5 to the oscillator 322 and the power amplifier 323. In some embodiments, the power conversion circuit 321 includes a DC-DC converter, an AC-AC converter, and/or a DC-AC converter. The oscillator 322 is variably outputting an AC signal of a specific frequency, the power amplifier 323 is configured to amplify the AC signal of the specific frequency, and the filter circuit 324 is configured to filter the harmonics of the AC signal and the unnecessary frequency portion. Thereby, it is output to the oscillating antenna 312 of the corresponding transmitting film coil element 31.

[0025]

In the present embodiment, as shown in FIGS. 2 and 4, each of the power receiving devices 4 includes a wireless charging receiver 4a and a load 4b, wherein the wireless charging receiver 4a and the load 4b can be structurally separable. The device can be integrated into a single device. For example, the wireless charging receiver 4a of the power receiving device 4 can be a wireless charging receiving pad, and the load 4b can be a mobile phone without a wireless charging function. By electrically connecting the wireless charging receiving pad to the mobile phone, the wireless charging receiving pad can be wirelessly connected. The charging function of the phone can achieve wireless charging. In another embodiment, the wireless charging receiver 4a can also be integrated into the interior of the housing of the load 4b (eg, a mobile phone).

[0026]

In some embodiments, the wireless charging receiver 4a of each power receiving device 4 includes a receiving film coil component 41 and a receiving module 42, wherein the receiving film coil component 41 includes a flexible substrate, a oscillating antenna, and a resonant antenna, wherein the resonant antenna Connect one or more capacitors at both ends. The structure, material and function of the flexible substrate, the oscillating antenna and the resonant antenna of the receiving film coil component 41 and the flexible substrate 311, the oscillating antenna 312 and the resonant antenna 313 of the transmitting film coil component 31 shown in FIGS. 5A and 5B, respectively The structure, materials and functions are the same and will not be described here. In other embodiments, the receiving film coil component 41 further includes a first protective layer and a second protective layer, in addition to the flexible substrate, the oscillating antenna and the resonant antenna, wherein the structure of the receiving film coil component 41 is The structure and material of the material of the emissive film coil member 31 shown in Figs. 6A and 6B or Figs. 7A and 7B are similar, and will not be described herein. In the present embodiment, the receiving film coil component 41 is coupled to the transmitting film coil component 31 to thereby receive the energy transmitted by the transmitting film coil component 31 of the wireless charging device 3 by means of magnetic resonance or magnetic induction. In other words, when the power receiving device 4 is loaded into the accommodating space 301 of the wireless charging device 3 to cause the wireless charging device 3 to automatically start operating, the transmitting film coil component 31 of the wireless charging device 3 emits a higher frequency electromagnetic wave (for example, but not limited to 6.78 MHz). When the receiving film coil component 41 of the power receiving device 4 is the same frequency and receives the electromagnetic wave, the energy can be transmitted from the transmitting film coil component 31 of the wireless charging device 3 to the receiving film coil component of the wireless charging receiver 4a by the magnetic resonance method. 41. In other embodiments, when the power receiving device 4 is loaded into the accommodating space 301 of the wireless charging device 3 to cause the wireless charging device 3 to automatically start operating, the transmitting film coil component 31 of the wireless charging device 3 emits electromagnetic waves of a lower frequency (for example, When the electromagnetic wave is received by the receiving film coil component 41 of the power receiving device 4, the energy can be transmitted from the transmitting film coil component 31 of the wireless charging device 3 to the receiving film coil component 41 of the wireless charging receiver 4a by magnetic induction. Since the shielding member 33 can block the electromagnetic waves emitted from the transmitting thin film coil member 31 from being diverged outward, the electromagnetic wave energy can be concentrated to the accommodating space 301, whereby the charging efficiency can be improved.

[0027]

Fig. 10 is a circuit block diagram of a receiving module of the power receiving device shown in Fig. 4. In some embodiments, as shown in Figures 2, 4, and 10, the wireless charging receiver 4a includes one or more sets of receiving modules 42, wherein each set of receiving modules 42 includes a filtering circuit 421, a rectifying circuit 422, The voltage stabilizing circuit 423 and the DC voltage adjusting circuit 424. The filter circuit 421 is electrically connected to the resonant antenna of the receiving thin film coil component 41 and filters the harmonics of the alternating current signal output from the resonant antenna of the receiving thin film coil component 41. The rectifier circuit 422 is electrically connected to the filter circuit 421 and the voltage stabilization circuit 423 to be configured to convert the AC signal into a DC power source. The voltage stabilizing circuit 423 is electrically connected to the rectifying circuit 422 and the DC voltage adjusting circuit 424 to stabilize the DC power source at a rated voltage value. The DC voltage adjusting circuit 424 is electrically connected to the voltage stabilizing circuit 423 and the load 4b to voltage-adjust (for example, boost) the DC power source to a voltage required by the load 4b, and to supply power to the load 4b, for example, to charge a battery of the mobile phone. .

[0028]

Fig. 11 is a view showing the structure of an exemplary embodiment of the power receiving apparatus of Fig. 4. As shown in Figures 2, 4 and 11, the power receiving device 4 includes a wireless charging receiver 4a and a load 4b, wherein the wireless charging receiver 4a of the power receiving device 4 can be a wireless charging receiving pad, and the load 4b can be a wireless charging function. Mobile phone. When the connector 43 of the wireless charging receiver 4a (ie, the wireless charging receiving pad) is electrically connected to the corresponding connector of the load 4b (ie, the mobile phone), the receiving film coil component 41 and the receiving module 42 are received by the wireless charging receiver 4a. The energy transmitted by the transmitting film coil component 31 of the wireless charging device 3 can be received, so that the mobile phone without the wireless charging function can achieve wireless charging.

[0029]

Figure 12 is a block diagram showing a circuit of a variation of the wireless charging system of the present invention. In this embodiment, the wireless charging system 2 of the present invention includes a wireless charging device 3 and one or more power receiving devices 4, 4', wherein the wireless charging device 3 can be based on the wireless charging receivers 4a, 4a of the power receiving devices 4, 4' The specification and characteristics are adaptively or selectively switched using magnetic resonance or magnetic induction to wirelessly charge the loads 4b, 4b' of the power receiving devices 4, 4'. In this embodiment, the wireless charging device 3 comprises a thin film coil emitting element 31, transmission module 32, the control unit 35, a first switching circuit 391, second switching circuit 392, a plurality of first capacitors C _11, C ₁₂ and a plurality of The second capacitors C ₂₁ , C ₂₂ , wherein the structures, functions and principles of the transmitting film coil component 31 and the transmitting module 32 are similar to those of the previous embodiment, and the receiving film coil components 41, 41 ′ and the receiving modules 42 , 42 ′ The structure, function and principle are the same as those of the previous embodiment, and details are not described herein again. A plurality of first capacitors C ₁₁ and C ₁₂ are respectively connected in parallel with a oscillating antenna (not shown) of the transmitting thin film coil element 31, and a plurality of first capacitors C ₁₁ and C ₁₂ are connected in parallel to each other to be connected and received. The receiving film coil elements 41, 41' of the devices 4, 4' are coupled. The plurality of second capacitors C ₂₁ and C ₂₂ are respectively connected in series with the output terminal of the transmitting module 32 and the oscillating antenna (not shown) of the transmitting film coil component 31, and the plurality of second capacitors C ₂₁ and C ₂₂ are connected to each other. Parallel connections are coupled to the transmit module 32 for filtering to improve charging quality. The first switching circuit 391 includes a plurality of first switching elements S ₁₁ , S ₁₂ , and each of the first switching elements S ₁₁ , S ₁₂ is connected in series with a corresponding first capacitor C ₁₁ , C ₁₂ . The second switching circuit 392 includes a plurality of second switching elements S ₂₁ , S ₂₂ , and each of the second switching elements S ₂₁ , S ₂₂ is connected in series with a corresponding second capacitor C ₂₁ , C ₂₂ . The control unit 35 is electrically connected to the plurality of first switching elements S ₁₁ , S _{12 of the} first switching circuit 391 and the plurality of second switching elements S ₂₁ , S _{22 of the} second switching circuit 392 , and Correspondingly generating a control signal according to the sensing signal of the wireless charging technology used by the wireless charging receivers 4a, 4a' of the power receiving device 4, 4' to control the plurality of first switching elements S of the first switching circuit 391 ₁₁ , S ₁₂ and the switching of the switching and blocking of the plurality of second switching elements S ₂₁ , S ₂₂ of the second switching circuit 392 , thereby enabling the wireless charging device 3 to be based on the wireless charging receiver of the power receiving device 4 , 4 ′ The specifications and characteristics of 4a, 4a' are adaptively or selectively switched to wirelessly charge the loads 4b, 4b' of the power receiving devices 4, 4' by means of magnetic resonance or magnetic induction.

[0030]

In the present embodiment, the operating frequency of the wireless charging device 3 and the power receiving device 4, 4' during operation can be calculated according to the following formula (1):

Fa=1/{2π(L _a C _a ) ^1/2 }= 1/{2π(L _b C _b ) ^1/2 }= f _b (1)

Where f _a and f _b are the operating frequencies of the wireless charging receivers 4a, 4a' of the wireless charging device 3 and the power receiving devices 4, 4', respectively, and C _a is the capacitance of the first capacitors C ₁₁ and C ₁₂ of the wireless charging device 3 The value, L _a is the inductance value on the oscillating antenna of the transmitting film coil component 31, C _b is the capacitance value of the third capacitor C ₃ , C _{3 '} of the power receiving device 4, 4', and L _b is the receiving film coil component 41. The inductance value of the 41's starting antenna. For example, the capacitance values of the first capacitors C ₁₁ and C ₁₂ of the wireless charging device 3 may be 0.5 μF and 0.1 nF, respectively, and the inductance L on the oscillating antenna of the transmitting film coil component 31 is 5 μH. When the capacitance value of the third capacitor C ₃ of the power receiving device 4 is 0.5 μF, and the inductance L ₃ of the oscillating antenna of the receiving film coil component 41 is 5 μH, the control unit 35 of the wireless charging device 3 issues a control signal to the first The switching circuit 391 and the second switching circuit 392 turn on the first switching element S ₁₁ and the second switching element S ₂₁ and turn off the first switching element S ₁₂ and the second switching element S ₂₂ , whereby the wireless charging device 3 can Switching selects the first capacitor C ₁₁ (capacitance value is also 0.5 μF), and the inductance value L on the oscillating antenna of the transmitting film coil component 31 is also 5 μH, so that the wireless charging device 3 and the wireless charging receiver 4a of the power receiving device 4 The working frequency is 100KHz, so that the electromagnetic wave of the lower frequency can be wirelessly charged by the magnetic induction method. When the capacitance value of the third capacitor C _{3 ′} of the power receiving device 4 ′ is 0.1 nF, and the inductance value L _{3 ′} on the oscillating antenna of the receiving film coil component 41 _′ is 5 μH, the control unit 35 of the wireless charging device 3 issues Controlling the signal to the first switching circuit 391 and the second switching circuit 392 to turn on the first switching element S ₁₂ and the second switching element S ₂₂ , and turn off the first switching element S ₁₁ and the second switching element S ₂₁ , thereby turning off the first switching element S ₁₁ and the second switching element S ₂₁ The wireless charging device 3 can switch between the first capacitor C ₁₂ (the capacitance value is also 0.1 nF), and the inductance L on the oscillating antenna 311 of the transmitting film coil component 31 is also 5 μH, so that the wireless charging device 3 and the power receiving device 4 ′ The operating frequency of the wireless charging receiver 4a' is 6.78 MHz, whereby the higher frequency electromagnetic waves can be wirelessly charged by the magnetic resonance method. It should be noted that the foregoing operating frequency is merely an example, and the technology of the present invention is not limited to the value of the aforementioned operating frequency.

[0031]

In some embodiments, as shown in FIG. 13, the wireless charging device 3 of the present invention can be installed in a receiving slot 61 of a vehicle body 6 to facilitate wireless charging of the power receiving device 4 by the user. In some embodiments, as shown in FIGS. 3 and 14, the carrier unit 34 of the wireless charging device 3 may be a tray type loading unit 34a, and the tray type loading unit 34a may first carry the power receiving unit 4, and The power receiving device 4 is transferred to the accommodating space 301 of the body 30 via the opening 302 for wireless charging, or the power receiving device 4 is removed from the accommodating space 301 of the body 30 and released by the opening 302 after the required charging operation is completed. In some embodiments, as shown in FIGS. 3 and 15, the load-carrying unit 34 of the wireless charging device 3 can be a suction-type loading unit 34b, and the suction-type loading unit 34b can receive power input into the opening 302. The device 4 is taken up, and the power receiving device 4 is transferred to the accommodating space 301 of the body 30 for wireless charging, or the power receiving device 4 is removed from the accommodating space 301 of the body 30 and released by the opening 302 after the required charging operation is completed. . In some embodiments, as shown in FIGS. 3 and 16, the load-carrying unit 34 of the wireless charging device 3 can be a cassette-type loading unit 34c, and the card-type loading unit 34c can first carry the power-receiving device 4 And the power receiving device 4 is transferred to the accommodating space 301 of the body 30 via the opening 302 for wireless charging, or after the required charging operation is completed, the power receiving device 4 is removed from the accommodating space 301 of the body 30 and released by the opening 302. Out.

[0032]

In summary, the present invention provides a wireless charging device that can automatically perform a wireless charging operation when the power receiving device is loaded into the body thereof, can suppress electromagnetic wave divergence to reduce electromagnetic wave damage to the user, and can concentrate electromagnetic waves to a charging area. Non-contact charging of one or more powered devices, and enhancing the amount of electromagnetic waves to improve charging performance. The wireless charging device of the present invention can be adapted for use in a vehicle body, and can emit electromagnetic waves of more than one different frequency, and has an accommodating space for one or more power receiving devices capable of receiving electromagnetic waves of the same frequency or different frequencies, and can ensure The one or more power receiving devices can wirelessly charge simultaneously or time-divisionally and effectively in the accommodating space, which can increase versatility and convenience of use. In addition, the wireless charging device of the present invention can adaptively or selectively switch between wireless charging using magnetic resonance coupling or magnetic induction, and the foregoing effects can be achieved.

[0033]

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

3‧‧‧Wireless charging device

5‧‧‧Power supply

31‧‧‧Transmitting film coil components

32‧‧‧Transmission module

34‧‧‧Loading unit

35‧‧‧Control unit

36‧‧‧Drive unit

37‧‧‧Sensor unit

301‧‧‧ accommodating space

302‧‧‧ openings

S1‧‧‧ control signal

P ₁ ‧‧‧ first position

P ₂ ‧‧‧second position

Claims (1)

A wireless charging device for wirelessly charging one or more power receiving devices, the wireless charging device comprising:
a body having an accommodation space and an opening;
At least one set of transmitting film coil elements disposed in the body and including at least one antenna for transmitting electromagnetic waves of a specific frequency or a plurality of different frequencies, and wirelessly charging the one or more power receiving devices;
At least one set of transmitting modules electrically connected between the transmitting film coil component and a power source to receive the power provided by the power source and provide an alternating current signal to the transmitting film coil component;
a shield member attached to an outer surface of the body or disposed in the body and at least partially covering the antenna of the transmitting film coil component to block the electromagnetic wave from being diverged to the outside of the body;
a loading unit disposed in the accommodating space of the body, and configured to carry the power receiving device and move the power receiving device into or out of the accommodating space of the body; and a control unit electrically connected to the transmitting The module controls the operation of the transmitting module according to whether the power receiving device moves the power receiving device into the receiving space.
2. The wireless charging device of claim 1, further comprising a sensing unit electrically connected to the control unit and configured to sense whether the loading unit carries the power receiving device and the power receiving device Transfer to the accommodating space of the body.
3. The wireless charging device of claim 2, wherein the sensing unit senses that the loading unit carries the power receiving device and transfers the power receiving device to the receiving space of the body, the sensing The unit sends a sensing signal to the control unit, and the control unit sends a control signal to the transmitting module according to the sensing signal to enable the operation of the transmitting module.
4. The wireless charging device of claim 2, wherein when the sensing unit senses that the loading unit does not carry the power receiving device, the loading unit does not load the power receiving device into the body. When the space, or the loading unit moves the power receiving device out of the accommodating space of the body, the sensing unit sends a sensing signal representing the disable to the control unit, and the control unit sends a control according to the sensing signal. Signal to the transmitting module to stop the operation of the transmitting module.
5. The wireless charging device of claim 1, further comprising a driving unit electrically connected to the control unit and the loading unit to drive the loading unit to operate according to control of the control unit .
6. The wireless charging device of claim 1, wherein each of the set of the transmitting film coil components comprises a flexible substrate, a resonant antenna, and a resonant antenna, the oscillating antenna and the resonant antenna being located in the flexible The two opposite sides of the substrate receive the alternating current signal, the two ends of the resonant antenna are connected to one or more capacitors, and the resonant antenna is coupled to the vibrating antenna to emit the electromagnetic wave.
7. The wireless charging device of claim 6, wherein each of the set of the transmitting film coil components further comprises:
a first protective layer covering the oscillating antenna; and a second protective layer covering the resonant antenna;
The shielding component is attached to one of the first protective layers or disposed between the first protective layer and the vibrating antenna.
8. The wireless charging device of claim 1, wherein the shielding element comprises a metal mesh film, a magnetically permeable film, or a combination thereof.
9. The wireless charging device of claim 8, wherein the metal mesh film material is selected from the group consisting of copper, gold, silver, aluminum, tungsten, chromium, titanium, indium, tin, nickel, iron or a metal composite composed of at least two or more, and the magnetic conductive film comprises a soft magnetic material, which is composed of ferrite, zinc-nickel ferrite, zinc-manganese ferrite or iron-iron-aluminum alloy and a bonding material Composition.
10. The wireless charging device of claim 1, further comprising a protective layer covering at least partially the shielding element.
11. The wireless charging device of claim 1, wherein the transmitting module comprises:
a power conversion circuit electrically connected to the power source and converting the power provided by the power source;
An oscillator coupled to the power conversion circuit and variably outputting the alternating signal of a specific frequency;
A power amplifier is coupled to the oscillator and the power conversion circuit and configured to amplify the AC signal; and a filter circuit coupled to the power amplifier and configured to filter the AC signal.
12. The wireless charging device of claim 1, wherein the loading unit is a tray type loading unit, a suction type loading unit or a cassette loading unit.
13. The wireless charging device of claim 1, wherein the system is installed in a receiving slot of a vehicle body.