WO2016105629A1 - Wireless power transmitting coil disposed around a protruding magnetic component - Google Patents

Wireless power transmitting coil disposed around a protruding magnetic component Download PDF

Info

Publication number
WO2016105629A1
WO2016105629A1 PCT/US2015/054823 US2015054823W WO2016105629A1 WO 2016105629 A1 WO2016105629 A1 WO 2016105629A1 US 2015054823 W US2015054823 W US 2015054823W WO 2016105629 A1 WO2016105629 A1 WO 2016105629A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless power
magnetic component
protruding magnetic
protruding
charged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/054823
Other languages
French (fr)
Inventor
Shahar PORAT
Gennady Goltman
Sergey Sofer
Oleg Pogorelik
Avi PRIEV
Songnan Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intel Corp
Original Assignee
Intel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Priority to CN201580062154.6A priority Critical patent/CN107112770B/en
Priority to EP15873869.0A priority patent/EP3238318B1/en
Priority to TW104138533A priority patent/TWI590560B/en
Publication of WO2016105629A1 publication Critical patent/WO2016105629A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction

Definitions

  • This disclosure relates generally to techniques for wireless charging. Specifically, this disclosure relates to wireless power transmitting coil formed in around a protruding magnetic component.
  • a basic wireless charging system may include a wireless power transmitter unit (PTU) and a wireless power receiving unit (PRU).
  • PTU wireless power transmitter unit
  • PRU wireless power receiving unit
  • a PTU may include a transmit (Tx) coil
  • a PRU may include receive (Rx) coil.
  • Magnetic resonance wireless charging may employ a magnetic coupling between the Tx coil and the Rx coil.
  • wireless charging systems may be implemented as charging systems for the wearable devices as opposed, or even in addition, to traditional wired charging systems.
  • wearable computing devices vary in shape and size making it challenging to find designs wherein wearable computing devices can be charged.
  • FIG. 1 is block diagram of a PTU to provide power to a PRU, wherein a magnetic component protrudes from the PTU;
  • FIG. 2 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component
  • Fig. 3 is an illustration of a perspective view of a wireless power transmitting coil and a non-linear protruding magnetic component
  • FIG. 4 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to receive a wireless propagation device;
  • FIG. 5 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to include multiple wireless power transmitting coils;
  • FIG. 6 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to provide power to multiple devices to be charged;
  • Fig. 7 is a flow diagram of a method for forming a device for wireless charging.
  • the present disclosure relates generally to techniques for wireless charging.
  • the techniques described herein include a wireless power transmitting coil of a charging device and a protruding magnetic component.
  • the wireless power transmitting (Tx) coil is wrapped around at least a portion of the protruding magnetic component.
  • turns of the wireless power Tx coil may be wrapped around the protruding magnetic component, wherein each turn of the Tx coil follows an entire perimeter of a cross section of the protruding magnetic component.
  • the protruding magnetic component may be hung from a wall, or otherwise disposed to receive electrically chargeable devices, such as a smart watch having a wireless power receiving (Rx) coil formed in a loop of the smart watch.
  • the techniques described herein include a power propagation device, such as a hanger, that includes a passive wireless power circuit configured to receive power from the wireless power Tx coil and provide that power to a wearable device, such as a shirt to be hung on the hanger and having a wireless power Rx coil of its own.
  • a power propagation device such as a hanger
  • a wearable device such as a shirt to be hung on the hanger and having a wireless power Rx coil of its own.
  • Hanging a smart watch or a chargeable shirt may be a natural behavior, thereby increasing simplicity and ease of use during wireless charging of these types of devices.
  • a wireless power Rx coil may be a component in a power receiving unit (PRU), while a wireless power Tx coil may be a component in a power transmitting unit (PTU), as discussed in more detail below.
  • a wireless power Rx coil may be a component in a power receiving unit (PRU)
  • a wireless power Tx coil may be a component in a power transmitting unit (PTU), as discussed in more detail below.
  • FIG. 1 is block diagram of a PTU to provide power to a PRU, wherein a magnetic component protrudes from the PTU.
  • a PTU 102 may couple to a PRU 104 via magnetic inductive coupling between resonators 106, and108, as indicated by the arrow 1 1 0.
  • the resonator 106 may be referred to herein as a Tx coil 106 of the PTU 102.
  • the resonator 108 may be referred to herein as a Rx coil 108 of the PRU 104.
  • the Tx coil 106 may be formed around a magnetic component 1 1 1 protruding from the PTU 1 02.
  • the protruding magnetic component 1 1 1 may be a hook, a bar, a pin, or any type of protrusion configured to receive a looped portion of wireless Rx coil, such as the Rx coil 1 08.
  • the protruding magnetic component 1 1 1 may be a ferromagnetic material, such as iron, nickel-zinc, manganese zinc, or a compound alloy, and may receive a device having at least a looped portion. Such a device is indicated by the dashed circle 1 12, and examples of such devices are discussed in more detail below.
  • the device 1 12 may be hung on the protruding magnetic component 1 1 1 .
  • the protruding magnetic component 1 1 1 may be configured to receive an Rx coil, such as the Rx coil 108 of the PRU 104, within a loop of the Rx coil.
  • the loop of the Rx coil 108 may be non-concentric with an axis associated with the protruding magnetic component 1 1 1 .
  • This arrangement may enable the protruding magnetic component 1 1 1 including the Tx coil 106 to be aligned with the Rx coil 108, and provide a more efficient inductive coupling as a magnetic flux of a field associated with the Tx coil 106 may be closer to the Rx coil 108.
  • the protruding magnetic component 1 1 1 may be configured to receive other types of devices, such as a power propagation device configured to pass power from the Tx coil 106 to chargeable device, such as a wearable computing device, as discussed in more detail below in regard to Fig. 4.
  • a power propagation device configured to pass power from the Tx coil 106 to chargeable device, such as a wearable computing device, as discussed in more detail below in regard to Fig. 4.
  • the protruding magnetic component 1 1 1 is illustrated in Fig. 1 as protruding from the PTU 102, in some cases the protruding magnetic component 1 1 1 may include one or more components of the PTU 102. Further, it is contemplated that the PRU 102 may be disposed within the protruding magnetic component 1 1 1 in as components become smaller in the future.
  • the Rx coil 108 may be embedded in the device having at least a looped portion, as indicated at 1 12.
  • the device 1 12 may be a wearable device, such as a smart watch, smart bracelet, smart necklace, smart glasses, a power propagating device, and the like.
  • the loop of the device 1 12 may be a result of a shape of the device 1 1 2.
  • the PRU 104 may include a controller 1 14 configured to detect current received at the Rx coil 108 resulting from an inductive coupling between the Tx coil 106, the protruding magnetic component 1 1 1 , and the Rx coil 108.
  • the controller 1 14 may be configured to initiate a wireless data broadcast indicating a resonant frequency of the Rx coil 108.
  • the wireless data transmission component may be Bluetooth Low Energy (BLE) module 1 16 in some cases.
  • BLE Bluetooth Low Energy
  • the wireless data transmission component may be integrated as operations of the controller 1 14, a load modulation circuit 1 1 8, a direct current to direct current (DC2DC) converter 1 20, or any combination thereof, wherein the data transmission may be indicated by patterns in the load modulation.
  • DC2DC direct current to direct current
  • the DC2DC converter 120 provides a DC output to a battery 124, or another current/power consuming component.
  • the DC2DC converter 120 may convert DC received as a result of the inductive coupling of the Tx coil 106, the protruding magnetic component 1 1 1 , the Rx coil 108, and the rectifier 122.
  • the PTU 102 may include a BLE module 1 26 configured to
  • the PTU 102 may also include a current sensor 128, a controller 130, a power amplifier 132, a DC2DC converter 134, an oscillator 1 36, and a matching network 138.
  • the current sensor 128 may be an ampere meter, a volt meter, or any other meter configured to sense load variations occurring due to inductive coupling between the PTU 102 and another object, such as the PRU 104.
  • the current sensor 128 may provide an indication of load change to a controller 130 of the PTU 102.
  • the controller 1 30 may power on the power amplifier 1 32 configured to receive direct current (DC) from the DC2DC converter 134, and to amplify and oscillate the current.
  • An oscillator 1 36 may oscillate the power provided at a given frequency and a matching network 138 may be used to match the amplified oscillation provided to the resonator 106 of the PTU 102.
  • Fig. 1 The block diagram of Fig. 1 is not intended to indicate that the PTU 102 and/or the PRU 104 are to include all of the components shown in Fig. 1 . Further, the PTU 1 02 and/or the PRU 104 may include any number of additional components not shown in Fig. 1 , depending on the details of the specific implementation.
  • Fig. 2 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component.
  • a wireless power Rx coil such as the Tx coil 1 06 of Fig. 1
  • a protruding magnetic component such as the protruding magnetic component 1 1 1 of Fig. 1
  • a charger 202 may include one or more components of the PTU 102 of Fig.
  • the charger 202 may provide an alternating current to the TX coil 106.
  • the current may result in a magnetic field, indicated at the dashed circles 204, having a magnetic flux.
  • the magnetic flux may move through an Rx coil, such as the Rx coil 108 of Fig. 1 .
  • the Rx coil 108 may be embedded in a wearable device 206.
  • Fig. 1 The Rx coil 108 may be embedded in a wearable device 206.
  • the wearable device 206 may be an example of the device 1 12 discussed above.
  • the wearable device 206 is hung on the protruding magnetic component 1 1 1 .
  • This example further illustrates how the protruding magnetic component 1 1 1 is configured to receive the wearable device 206 such that the Rx coil 108 is not-concentric with an axis of the protruding magnetic component.
  • This aspect enables a more efficient wireless power transfer for various sizes of wearable devices as the turns of the Rx coil 108 are closer to the magnetic field 204, than if the Rx coil 1 08 was concentric to the axis of the protruding magnetic component 1 1 1 .
  • Fig. 3 is an illustration of a perspective view of a wireless power transmitting coil and a non-linear protruding magnetic component. Similar to Fig. 2, a wireless power TX coil, such as the Tx coil 106 of Fig. 1 , may be disposed around a protruding magnetic component, such as the protruding magnetic component 1 1 1 of Fig. 1 . However, in this example, the protruding magnetic component 1 1 1 is formed a non-linear shape. This formation may provide various benefits. First, the protruding magnetic component 1 1 1 may be used as a hook, rather than a linear rod, thereby securing the wearable device 206 to the protruding magnetic component 1 1 1 .
  • non-linear formation of the protruding magnetic component 1 1 1 may direct a magnetic field 302 associated with current flow through the TX coil 106 from the charger 202.
  • a directed current flow may increase the magnetic field in a direction towards the Rx coil 1 08, rather than towards a center of the wearable device 206.
  • Fig. 4 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to receive a wireless propagation device.
  • a device including a power propagating device generally indicated at 402 may be hung from the protruding magnetic component 1 1 1 .
  • the power propagating device 402, in this example, is a hanger to hold a wearable device, generally indicated at 404.
  • wearable device 404 is a shirt, having a battery and a wireless power receiving coil, such as the battery 1 24 and Rx coil 108 of Fig. 1 .
  • the power propagating device 402 may couple to the Tx coil 106 at an Rx coil 406 of the power propagating device 402, through magnetic flux of the magnetic fields 204 discussed above in regard to Fig. 2.
  • the Rx coil 406 may be coupled to a Tx coil 408 of the power propagating device 402.
  • a magnetic flux of the fields 410 may be received at the RX coil 108 of the wearable device 404.
  • the wearable device 404 may include multiple RX coils including the RX coil 108 formed around a shoulder area of the wearable device 404, as well as RX coils (not shown) formed around arm areas of the wearable device 404. Further, in some cases, the wearable device 404 may include other wearable devices indicated at 41 2.
  • the other wearable devices 412 may be smart buttons, for example, communicatively coupled to receive power from the battery 124, in some cases.
  • the other wearable devices 41 2 may also be coupled to the Tx coil 408 of the power propagating device 402. In this example, the other wearable devices 412 may be include their own Rx coils, such as the Rx coil 108.
  • the Rx coil 406 and the Tx coil 408 may be referred to as a passive power repeater circuit.
  • the power propagating device 402 may include additional passive power repeater circuits. Additional power circuits may generate a phase shift such that load increases and decreases are reflected to the PTU 102. In this case, a constant current source implementation may be achieved providing more power to devices to be charged as their associated loads are presented.
  • the wearable device 404 may be an example of the device 1 12 discussed above.
  • the wearable device 404 is hung on the protruding magnetic component 1 1 1 via a hanger having a passive power circuit. This aspect, as well as any other aspect discussed herein, may increase ease of use for charging wearable devices.
  • Fig. 5 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to include multiple wireless power transmitting coils.
  • the Tx coil 106 is one of multiple Tx coils, including Tx coils 502 and 504, disposed around the protruding magnetic component 1 1 1 .
  • multiple coils, including Tx coil 1 06, 502, and 504 may enable the protruding magnetic element 1 1 1 to receive multiple components including the wearable device 206 and the wearable device 404 discussed above in regard to Figs. 2-4.
  • Each of the Tx coils 106, 502, and 504 may emit a magnetic field, as indicated at 204, 506, and 508, respectively, as current propagates through each the Tx coils 106, 502, and 504.
  • the power propagation device 402 may propagate power to the wearable device 404.
  • the Tx coil 408 may be implemented along a vertical portion of a hanger as well as horizontal, or arm portions of the hanger.
  • Fig. 6 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to provide power to multiple devices to be charged.
  • the Tx coil 1 06 may be integrated with a planar surface of the charger 202.
  • Rx coils 602 and 604 may receive power from the Tx coil 106.
  • the Rx coils 602 and 604 may be components of a PRU, such as the PRU 104 of Fig. 1 .
  • Simultaneous charging of a smart watch 606 may occur by placing the smart watch on the protruding magnetic component 1 1 1 .
  • Fig. 7 is a flow diagram of a method for forming a device for wireless charging.
  • the method 700 may include forming a wireless power transmitting coil configured to propagate current provided from a charging device, the current propagation is to generate a magnetic field at block 702.
  • a protruding magnetic component is formed.
  • the wireless power transmitting coil is disposed around the protruding magnetic component.
  • forming the protruding magnetic component comprises forming the protruding magnetic component in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component maybe formed as hook.
  • forming the protruding magnetic component comprises forming the protruding magnetic component protruding from the charging device.
  • the protruding magnetic component is configured to receive a device to be charged having a looped shape in a non-concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically.
  • the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • method 700 may include forming a power propagation device having a looped portion. The protruding magnetic component is configured to receive the power propagation device comprising by hanging the looped portion on the protruding magnetic component.
  • the wireless power transmitting coil is a first wireless power transmitting coil.
  • Forming the power propagation device may include forming a first wireless power receiving coil configured to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current.
  • Forming the power propagation device may also include forming a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the method may further include forming a device to be charged, wherein forming the power propagation device comprises configuring the power propagation device to receive the device to be charged by hanging the device to be charged on the power propagation device.
  • Forming the device to be charged may include forming a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
  • Forming the power propagation device may include forming a hanger to be hung on the protruding magnetic component.
  • the device to be charged may include a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the method 700 may further include forming one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component.
  • Example 1 includes an apparatus for wireless charging.
  • the apparatus includes a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
  • the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
  • the wireless power transmitting coil may be a first wireless power transmitting coil
  • the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current.
  • the power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
  • the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
  • the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 1 is contemplated.
  • Example 2 includes a method for wireless charging.
  • the method includes forming a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and forming a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
  • the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
  • the wireless power transmitting coil may be a first wireless power transmitting coil
  • the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current.
  • the power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
  • the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
  • the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 2 is contemplated.
  • Example 3 includes a system for wireless charging.
  • the system includes a charging device, a wireless power transmitting coil configured to propagate current provided from the charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
  • the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
  • the wireless power transmitting coil may be a first wireless power transmitting coil
  • the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current.
  • the power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
  • the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
  • the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the system may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 3 is contemplated.
  • Example 4 includes a method for wireless charging.
  • the method includes forming a means for wireless power transmitting configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and forming a protruding magnetic component, wherein the means for wireless power transmitting is disposed around the protruding magnetic component.
  • the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
  • the means for wireless power transmitting may be a first means for wireless power transmitting, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first means for wireless power transmitting, wherein receiving the magnetic flux generates a current.
  • the power propagation component may also include a second means for wireless power transmitting configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
  • the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second means for wireless power transmitting of the power propagation device.
  • the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 4 is contemplated.
  • Example 5 includes a system for wireless charging.
  • the system includes a charging device, a means for wireless power transmitting configured to propagate current provided from the charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the means for wireless power transmitting is disposed around the protruding magnetic component.
  • the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field.
  • the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component.
  • the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
  • the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
  • the means for wireless power transmitting may be a first means for wireless power transmitting, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first means for wireless power transmitting, wherein receiving the magnetic flux generates a current.
  • the power propagation component may also include a second means for wireless power transmitting configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
  • the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
  • the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second means for wireless power transmitting of the power propagation device.
  • the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
  • the wireless power receiving coil is a first wireless power receiving coil.
  • the system may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 5 is contemplated.
  • the elements in some cases may each have a same reference number or a different reference number to suggest that the elements represented could be different and/or similar.
  • an element may be flexible enough to have different implementations and work with some or all of the systems shown or described herein.
  • the various elements shown in the figures may be the same or different. Which one is referred to as a first element and which is called a second element is arbitrary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Techniques for wireless charging in a system, method, and apparatus are described herein. For example, the apparatus includes a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field. The apparatus includes a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.

Description

WIRELESS POWER TRANSMITTING COIL DISPOSED AROUND A
PROTRUDING MAGNETIC COMPONENT
Cross Reference to Related Application
[0001] The present application claims the benefit of the filing date of U.S. Patent Application No. 14/580,594, filed December 23, 2014, which is incorporated herein by reference.
Technical Field
[0002] This disclosure relates generally to techniques for wireless charging. Specifically, this disclosure relates to wireless power transmitting coil formed in around a protruding magnetic component.
Background Art
[0003] A basic wireless charging system may include a wireless power transmitter unit (PTU) and a wireless power receiving unit (PRU). For example, a PTU may include a transmit (Tx) coil, and a PRU may include receive (Rx) coil. Magnetic resonance wireless charging may employ a magnetic coupling between the Tx coil and the Rx coil. As wearable computing devices become increasingly popular, wireless charging systems may be implemented as charging systems for the wearable devices as opposed, or even in addition, to traditional wired charging systems. However, in many cases, wearable computing devices vary in shape and size making it challenging to find designs wherein wearable computing devices can be charged.
Brief Description of the Drawings
[0004] Fig. 1 is block diagram of a PTU to provide power to a PRU, wherein a magnetic component protrudes from the PTU;
[0005] Fig. 2 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component; [0006] Fig. 3 is an illustration of a perspective view of a wireless power transmitting coil and a non-linear protruding magnetic component;
[0007] Fig. 4 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to receive a wireless propagation device;
[0008] Fig. 5 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to include multiple wireless power transmitting coils;
[0009] Fig. 6 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to provide power to multiple devices to be charged; and
[0010] Fig. 7 is a flow diagram of a method for forming a device for wireless charging.
[0011 ] The same numbers are used throughout the disclosure and the figures to reference like components and features. Numbers in the 100 series refer to features originally found in Fig. 1 ; numbers in the 200 series refer to features originally found in Fig. 2; and so on.
Description of the Aspects
[0012] The present disclosure relates generally to techniques for wireless charging. Specifically, the techniques described herein include a wireless power transmitting coil of a charging device and a protruding magnetic component. In some cases, the wireless power transmitting (Tx) coil is wrapped around at least a portion of the protruding magnetic component. For example, turns of the wireless power Tx coil may be wrapped around the protruding magnetic component, wherein each turn of the Tx coil follows an entire perimeter of a cross section of the protruding magnetic component. In this scenario, the protruding magnetic component may be hung from a wall, or otherwise disposed to receive electrically chargeable devices, such as a smart watch having a wireless power receiving (Rx) coil formed in a loop of the smart watch. Further, the techniques described herein include a power propagation device, such as a hanger, that includes a passive wireless power circuit configured to receive power from the wireless power Tx coil and provide that power to a wearable device, such as a shirt to be hung on the hanger and having a wireless power Rx coil of its own. Hanging a smart watch or a chargeable shirt may be a natural behavior, thereby increasing simplicity and ease of use during wireless charging of these types of devices.
[0013] In some cases, the techniques discussed herein may be implemented using a wireless charging standard protocol, such as the specification provided by Alliance For Wireless Power (A4WP) version 1 .2.1 , May 07, 2014. A wireless power Rx coil may be a component in a power receiving unit (PRU), while a wireless power Tx coil may be a component in a power transmitting unit (PTU), as discussed in more detail below.
[0014] Fig. 1 is block diagram of a PTU to provide power to a PRU, wherein a magnetic component protrudes from the PTU. A PTU 102 may couple to a PRU 104 via magnetic inductive coupling between resonators 106, and108, as indicated by the arrow 1 1 0. The resonator 106 may be referred to herein as a Tx coil 106 of the PTU 102. The resonator 108 may be referred to herein as a Rx coil 108 of the PRU 104.
[0015] As discussed above, the Tx coil 106 may be formed around a magnetic component 1 1 1 protruding from the PTU 1 02. The protruding magnetic component 1 1 1 may be a hook, a bar, a pin, or any type of protrusion configured to receive a looped portion of wireless Rx coil, such as the Rx coil 1 08. For example, the protruding magnetic component 1 1 1 may be a ferromagnetic material, such as iron, nickel-zinc, manganese zinc, or a compound alloy, and may receive a device having at least a looped portion. Such a device is indicated by the dashed circle 1 12, and examples of such devices are discussed in more detail below. In some cases, the device 1 12 may be hung on the protruding magnetic component 1 1 1 . Further, in some cases, the protruding magnetic component 1 1 1 may be configured to receive an Rx coil, such as the Rx coil 108 of the PRU 104, within a loop of the Rx coil. In this scenario, the loop of the Rx coil 108 may be non-concentric with an axis associated with the protruding magnetic component 1 1 1 . This arrangement may enable the protruding magnetic component 1 1 1 including the Tx coil 106 to be aligned with the Rx coil 108, and provide a more efficient inductive coupling as a magnetic flux of a field associated with the Tx coil 106 may be closer to the Rx coil 108. Further, in some cases, the protruding magnetic component 1 1 1 may be configured to receive other types of devices, such as a power propagation device configured to pass power from the Tx coil 106 to chargeable device, such as a wearable computing device, as discussed in more detail below in regard to Fig. 4. Although the protruding magnetic component 1 1 1 is illustrated in Fig. 1 as protruding from the PTU 102, in some cases the protruding magnetic component 1 1 1 may include one or more components of the PTU 102. Further, it is contemplated that the PRU 102 may be disposed within the protruding magnetic component 1 1 1 in as components become smaller in the future.
[0016] As discussed above, the Rx coil 108, as well as other components of discussed below, may be embedded in the device having at least a looped portion, as indicated at 1 12. The device 1 12 may be a wearable device, such as a smart watch, smart bracelet, smart necklace, smart glasses, a power propagating device, and the like. As illustrated and discussed in more detail below, the loop of the device 1 12 may be a result of a shape of the device 1 1 2.
[0017] The PRU 104 may include a controller 1 14 configured to detect current received at the Rx coil 108 resulting from an inductive coupling between the Tx coil 106, the protruding magnetic component 1 1 1 , and the Rx coil 108. In some cases, the controller 1 14 may be configured to initiate a wireless data broadcast indicating a resonant frequency of the Rx coil 108.
[0018] The wireless data transmission component may be Bluetooth Low Energy (BLE) module 1 16 in some cases. In some cases, the wireless data transmission component may be integrated as operations of the controller 1 14, a load modulation circuit 1 1 8, a direct current to direct current (DC2DC) converter 1 20, or any combination thereof, wherein the data transmission may be indicated by patterns in the load modulation.
[0019] As illustrated in Fig. 1 , the DC2DC converter 120 provides a DC output to a battery 124, or another current/power consuming component. The DC2DC converter 120 may convert DC received as a result of the inductive coupling of the Tx coil 106, the protruding magnetic component 1 1 1 , the Rx coil 108, and the rectifier 122.
[0020] The PTU 102 may include a BLE module 1 26 configured to
communicate with the BLE module 1 16. The PTU 102 may also include a current sensor 128, a controller 130, a power amplifier 132, a DC2DC converter 134, an oscillator 1 36, and a matching network 138. The current sensor 128 may be an ampere meter, a volt meter, or any other meter configured to sense load variations occurring due to inductive coupling between the PTU 102 and another object, such as the PRU 104. The current sensor 128 may provide an indication of load change to a controller 130 of the PTU 102. The controller 1 30 may power on the power amplifier 1 32 configured to receive direct current (DC) from the DC2DC converter 134, and to amplify and oscillate the current. An oscillator 1 36 may oscillate the power provided at a given frequency and a matching network 138 may be used to match the amplified oscillation provided to the resonator 106 of the PTU 102.
[0021] The block diagram of Fig. 1 is not intended to indicate that the PTU 102 and/or the PRU 104 are to include all of the components shown in Fig. 1 . Further, the PTU 1 02 and/or the PRU 104 may include any number of additional components not shown in Fig. 1 , depending on the details of the specific implementation.
[0022] Fig. 2 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component. As discussed above, a wireless power Rx coil, such as the Tx coil 1 06 of Fig. 1 , may be disposed around a protruding magnetic component, such as the protruding magnetic component 1 1 1 of Fig. 1 . A charger 202 may include one or more components of the PTU 102 of Fig.
1 . In any event, the charger 202 may provide an alternating current to the TX coil 106. The current may result in a magnetic field, indicated at the dashed circles 204, having a magnetic flux.
[0023] The magnetic flux may move through an Rx coil, such as the Rx coil 108 of Fig. 1 . The Rx coil 108 may be embedded in a wearable device 206. In Fig.
2, the wearable device 206 may be an example of the device 1 12 discussed above. In this example, the wearable device 206 is hung on the protruding magnetic component 1 1 1 . This example further illustrates how the protruding magnetic component 1 1 1 is configured to receive the wearable device 206 such that the Rx coil 108 is not-concentric with an axis of the protruding magnetic component. This aspect enables a more efficient wireless power transfer for various sizes of wearable devices as the turns of the Rx coil 108 are closer to the magnetic field 204, than if the Rx coil 1 08 was concentric to the axis of the protruding magnetic component 1 1 1 .
[0024] Fig. 3 is an illustration of a perspective view of a wireless power transmitting coil and a non-linear protruding magnetic component. Similar to Fig. 2, a wireless power TX coil, such as the Tx coil 106 of Fig. 1 , may be disposed around a protruding magnetic component, such as the protruding magnetic component 1 1 1 of Fig. 1 . However, in this example, the protruding magnetic component 1 1 1 is formed a non-linear shape. This formation may provide various benefits. First, the protruding magnetic component 1 1 1 may be used as a hook, rather than a linear rod, thereby securing the wearable device 206 to the protruding magnetic component 1 1 1 . Further, the non-linear formation of the protruding magnetic component 1 1 1 may direct a magnetic field 302 associated with current flow through the TX coil 106 from the charger 202. A directed current flow may increase the magnetic field in a direction towards the Rx coil 1 08, rather than towards a center of the wearable device 206.
[0025] Fig. 4 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to receive a wireless propagation device. As discussed above, a device including a power propagating device, generally indicated at 402, may be hung from the protruding magnetic component 1 1 1 . The power propagating device 402, in this example, is a hanger to hold a wearable device, generally indicated at 404. As illustrated in Fig. 4, wearable device 404 is a shirt, having a battery and a wireless power receiving coil, such as the battery 1 24 and Rx coil 108 of Fig. 1 . Rather than directly hanging the wearable device 404 on the protruding magnetic component 1 1 1 , the power propagating device 402 may couple to the Tx coil 106 at an Rx coil 406 of the power propagating device 402, through magnetic flux of the magnetic fields 204 discussed above in regard to Fig. 2. [0026] The Rx coil 406 may be coupled to a Tx coil 408 of the power propagating device 402. The magnetic fields of the Tx coil 408, generally indicated by the dashed circles 410. A magnetic flux of the fields 410 may be received at the RX coil 108 of the wearable device 404. In some cases, the wearable device 404 may include multiple RX coils including the RX coil 108 formed around a shoulder area of the wearable device 404, as well as RX coils (not shown) formed around arm areas of the wearable device 404. Further, in some cases, the wearable device 404 may include other wearable devices indicated at 41 2. The other wearable devices 412 may be smart buttons, for example, communicatively coupled to receive power from the battery 124, in some cases. The other wearable devices 41 2 may also be coupled to the Tx coil 408 of the power propagating device 402. In this example, the other wearable devices 412 may be include their own Rx coils, such as the Rx coil 108.
[0027] The Rx coil 406 and the Tx coil 408 may be referred to as a passive power repeater circuit. In example, the power propagating device 402 may include additional passive power repeater circuits. Additional power circuits may generate a phase shift such that load increases and decreases are reflected to the PTU 102. In this case, a constant current source implementation may be achieved providing more power to devices to be charged as their associated loads are presented.
[0028] In Fig. 4, the wearable device 404 may be an example of the device 1 12 discussed above. In this example, the wearable device 404 is hung on the protruding magnetic component 1 1 1 via a hanger having a passive power circuit. This aspect, as well as any other aspect discussed herein, may increase ease of use for charging wearable devices.
[0029] Fig. 5 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to include multiple wireless power transmitting coils. In some cases, the Tx coil 106 is one of multiple Tx coils, including Tx coils 502 and 504, disposed around the protruding magnetic component 1 1 1 . As illustrated in Fig. 5, multiple coils, including Tx coil 1 06, 502, and 504, may enable the protruding magnetic element 1 1 1 to receive multiple components including the wearable device 206 and the wearable device 404 discussed above in regard to Figs. 2-4. Each of the Tx coils 106, 502, and 504, may emit a magnetic field, as indicated at 204, 506, and 508, respectively, as current propagates through each the Tx coils 106, 502, and 504. As discussed in regard to Fig. 4 above, the power propagation device 402 may propagate power to the wearable device 404. In some embodiments, the Tx coil 408 may be implemented along a vertical portion of a hanger as well as horizontal, or arm portions of the hanger.
[0030] Fig. 6 is an illustration of a perspective view of a wireless power transmitting coil and a protruding magnetic component configured to provide power to multiple devices to be charged. In some cases, the Tx coil 1 06 may be integrated with a planar surface of the charger 202. As illustrated in Fig. 6, Rx coils 602 and 604 may receive power from the Tx coil 106. The Rx coils 602 and 604 may be components of a PRU, such as the PRU 104 of Fig. 1 . Simultaneous charging of a smart watch 606 may occur by placing the smart watch on the protruding magnetic component 1 1 1 .
[0031] Fig. 7 is a flow diagram of a method for forming a device for wireless charging. The method 700 may include forming a wireless power transmitting coil configured to propagate current provided from a charging device, the current propagation is to generate a magnetic field at block 702. At block 704, a protruding magnetic component is formed. At 706, the wireless power transmitting coil is disposed around the protruding magnetic component.
[0032] In some cases, forming the protruding magnetic component comprises forming the protruding magnetic component in a non-linear shape to guide a direction of the generated magnetic field. For example, the protruding magnetic component maybe formed as hook.
[0033] In some cases, forming the protruding magnetic component comprises forming the protruding magnetic component protruding from the charging device. In this case, the protruding magnetic component is configured to receive a device to be charged having a looped shape in a non-concentric disposition to an axis of the protruding magnetic component. [0034] In some cases, the protruding magnetic component is configured to be hung vertically. In this case, the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component. Further, method 700 may include forming a power propagation device having a looped portion. The protruding magnetic component is configured to receive the power propagation device comprising by hanging the looped portion on the protruding magnetic component.
[0035] In some cases, the wireless power transmitting coil is a first wireless power transmitting coil. Forming the power propagation device may include forming a first wireless power receiving coil configured to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current. Forming the power propagation device may also include forming a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In this scenario, the method may further include forming a device to be charged, wherein forming the power propagation device comprises configuring the power propagation device to receive the device to be charged by hanging the device to be charged on the power propagation device. Forming the device to be charged may include forming a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device. Forming the power propagation device may include forming a hanger to be hung on the protruding magnetic component. The device to be charged may include a wearable device comprising one or more additional devices to be charged.
[0036] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The method 700 may further include forming one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component.
[0037] Not all components, features, structures, characteristics, etc. described and illustrated herein need be included in a particular aspect or aspects. If the specification states a component, feature, structure, or characteristic "may", "might", "can" or "could" be included, for example, that particular component, feature, structure, or characteristic is not required to be included. If the specification or claim refers to "a" or "an" element, that does not mean there is only one of the element. If the specification or claims refer to "an additional" element, that does not preclude there being more than one of the additional element.
[0038] Example 1 includes an apparatus for wireless charging. In this example, the apparatus includes a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
[0039] In Example 1 , the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field. In some cases, the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component. In some cases, the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
[0040] In some cases, the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component. The wireless power transmitting coil may be a first wireless power transmitting coil, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current. The power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In some cases, the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device. In some cases, the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device. In some cases, the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
[0041] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 1 is contemplated.
[0042] Example 2 includes a method for wireless charging. In this example, the method includes forming a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and forming a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
[0043] In Example 2, the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field. In some cases, the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component. In some cases, the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
[0044] In some cases, the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component. The wireless power transmitting coil may be a first wireless power transmitting coil, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current. The power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In some cases, the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device. In some cases, the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device. In some cases, the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
[0045] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 2 is contemplated.
[0046] Example 3 includes a system for wireless charging. In this example, the system includes a charging device, a wireless power transmitting coil configured to propagate current provided from the charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
[0047] In Example 3, the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field. In some cases, the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component. In some cases, the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
[0048] In some cases, the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component. The wireless power transmitting coil may be a first wireless power transmitting coil, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current. The power propagation component may also include a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In some cases, the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device. In some cases, the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device. In some cases, the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
[0049] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The system may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 3 is contemplated.
[0050] Example 4 includes a method for wireless charging. In this example, the method includes forming a means for wireless power transmitting configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field, and forming a protruding magnetic component, wherein the means for wireless power transmitting is disposed around the protruding magnetic component.
[0051] In Example 4, the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field. In some cases, the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component. In some cases, the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
[0052] In some cases, the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component. The means for wireless power transmitting may be a first means for wireless power transmitting, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first means for wireless power transmitting, wherein receiving the magnetic flux generates a current. The power propagation component may also include a second means for wireless power transmitting configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In some cases, the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device. In some cases, the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second means for wireless power transmitting of the power propagation device. In some cases, the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
[0053] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The apparatus may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 4 is contemplated.
[0054] Example 5 includes a system for wireless charging. In this example, the system includes a charging device, a means for wireless power transmitting configured to propagate current provided from the charging device, wherein the current propagation is to generate a magnetic field, and a protruding magnetic component, wherein the means for wireless power transmitting is disposed around the protruding magnetic component.
[0055] In Example 5, the protruding magnetic component may be formed in a non-linear shape to guide a direction of the generated magnetic field. In some cases, the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non- concentric disposition to an axis of the protruding magnetic component. In some cases, the protruding magnetic component is configured to be hung vertically, and the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
[0056] In some cases, the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component. The means for wireless power transmitting may be a first means for wireless power transmitting, and the power propagation device includes a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first means for wireless power transmitting, wherein receiving the magnetic flux generates a current. The power propagation component may also include a second means for wireless power transmitting configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current. In some cases, the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device. In some cases, the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second means for wireless power transmitting of the power propagation device. In some cases, the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
[0057] In some cases, the wireless power receiving coil is a first wireless power receiving coil. The system may further include one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component. Further, any combination of the cases discussed above in regard to Example 5 is contemplated.
[0058] It is to be noted that, although some aspects have been described in reference to particular implementations, other implementations are possible according to some aspects. Additionally, the arrangement and/or order of circuit elements or other features illustrated in the drawings and/or described herein need not be arranged in the particular way illustrated and described. Many other arrangements are possible according to some aspects.
[0059] In each system shown in a figure, the elements in some cases may each have a same reference number or a different reference number to suggest that the elements represented could be different and/or similar. However, an element may be flexible enough to have different implementations and work with some or all of the systems shown or described herein. The various elements shown in the figures may be the same or different. Which one is referred to as a first element and which is called a second element is arbitrary.
[0060] It is to be understood that specifics in the aforementioned examples may be used anywhere in one or more aspects. For instance, all optional features of the computing device described above may also be implemented with respect to either of the methods or the computer-readable medium described herein.
Furthermore, although flow diagrams and/or state diagrams may have been used herein to describe aspects, the techniques are not limited to those diagrams or to corresponding descriptions herein. For example, flow need not move through each illustrated box or state or in exactly the same order as illustrated and described herein.
[0061] The present techniques are not restricted to the particular details listed herein. Indeed, those skilled in the art having the benefit of this disclosure will appreciate that many other variations from the foregoing description and drawings may be made within the scope of the present techniques. Accordingly, it is the following claims including any amendments thereto that define the scope of the present techniques.

Claims

Claims What is claimed is:
1 . An apparatus for wireless charging, comprising:
a wireless power transmitting coil configured to propagate current provided from a charging device, wherein the current propagation is to generate a magnetic field; and
a protruding magnetic component, wherein the wireless power transmitting coil is disposed around the protruding magnetic component.
2. The apparatus of claim 1 , wherein the protruding magnetic component is formed in a non-linear shape to guide a direction of the generated magnetic field.
3. The apparatus of any combination of claims 1 -2, wherein the protruding magnetic component protrudes from the charging device and is configured to receive a device to be charged having a looped shape in a non-concentric disposition to an axis of the protruding magnetic component.
4. The apparatus of any combination of claims 1 -2, wherein the protruding magnetic component is configured to be hung vertically, and wherein the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
5. The apparatus of any combination of claims 1 -2, wherein the protruding magnetic component is configured to be hung vertically, and wherein the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component.
6. The apparatus of claim 5, wherein the wireless power transmitting coil is a first wireless power transmitting coil, the power propagation device comprising: a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current;
a second wireless power transmitting coil to receive the current from the first wireless power receiving coil, and to generate a magnetic field having a magnetic flux based, in part, on the received current.
7. The apparatus of claim 6, wherein the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
8. The apparatus of claim 7, wherein the device to be charged comprises a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
9. The apparatus of claim 8, wherein the power propagation device comprises a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
10. The apparatus of any combination of claims 1 -2, wherein the wireless power receiving coil is a first wireless power receiving coil, the apparatus further comprising one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component.
1 1 . A method for wireless charging, the method comprising:
forming a wireless power transmitting coil configured to propagate current provided from a charging device, the current propagation is to generate a magnetic field; and
forming a protruding magnetic component; and disposing the wireless power transmitting coil around the protruding magnetic component.
12. The method of claim 1 1 , wherein forming the protruding magnetic component comprises forming the protruding magnetic component in a non-linear shape to guide a direction of the generated magnetic field.
13. The method of any combination of claims 1 1 -12, wherein forming the protruding magnetic component comprises forming the protruding magnetic component protruding from the charging device, and wherein the protruding magnetic component is configured to receive a device to be charged having a looped shape in a non-concentric disposition to an axis of the protruding magnetic component.
14. The method of any combination of claims 1 1 -12, wherein the protruding magnetic component is configured to be hung vertically, and wherein the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component.
15. The method of any combination of claims 1 1 -12, wherein the protruding magnetic component is configured to be hung vertically, the method comprising forming a power propagation device having a looped portion, and wherein the protruding magnetic component is configured to receive the power propagation device comprising by hanging the looped portion on the protruding magnetic component.
16. The method of claim 15, wherein the wireless power transmitting coil is a first wireless power transmitting coil, wherein forming the power propagation device comprises: forming a first wireless power receiving coil configured to receive a magnetic flux of the magnetic field from the first wireless power transmitting coil, wherein receiving the magnetic flux generates a current; forming a second wireless power transmitting coil configured to receive the current from the first wireless power receiving coil, and configured to generate a magnetic field having a magnetic flux based, in part, on the received current.
17. The method of claim 16, further comprising forming a device to be charged, wherein forming the power propagation device comprises configuring the power propagation device to receive the device to be charged by hanging the device to be charged on the power propagation device.
18. The method of claim 17, wherein forming the device to be charged comprises forming a second wireless power receiving coil to receive the magnetic flux from the second wireless power transmitting coil of the power propagation device.
19. The method of claim 18, wherein forming the power propagation device comprises forming a hanger to be hung on the protruding magnetic component, and wherein the device to be charged comprises a wearable device comprising one or more additional devices to be charged.
20. The method of any combination of claims 1 1 -12, wherein the wireless power receiving coil is a first wireless power receiving coil, the method further comprising forming one or more additional wireless power receiving coil including at least a second wireless power receiving coil disposed around the protruding magnetic component.
21 . A system for wireless charging, comprising: a means for wireless power transmitting configured to propagate current provided from a charging device, the current propagation is to generate a magnetic field; and
a protruding magnetic component, wherein the means for wireless power transmitting is disposed around the protruding magnetic component.
22. The system of claim 21 , wherein the protruding magnetic component is formed in a non-linear shape to guide a direction of the generated magnetic field, and wherein the protruding magnetic component protrudes from the charging device, wherein the protruding magnetic component is configured to be hung vertically, and wherein the protruding magnetic component is configured to receive a device to be charged having a looped shape by hanging the device to be charged on the protruding magnetic component in a non-concentric disposition to an axis of the protruding magnetic component.
23. The system of any combination of claims 21 -22, wherein the protruding magnetic component is configured to be hung vertically, and wherein the protruding magnetic component is configured to receive a power propagation device comprising a looped portion by hanging the looped portion on the protruding magnetic component, and wherein wireless the power transmitting coil is a first means for wireless power transmitting, the power propagation device comprising:
a first wireless power receiving coil to receive a magnetic flux of the magnetic field from the first means for wireless power transmitting, wherein receiving the magnetic flux generates a current;
a second means for wireless power transmitting to receive the current from the first wireless power receiving coil, and to generate a magnetic field having a magnetic flux based, in part, on the received current, and wherein the power propagation device is configured to receive a device to be charged by hanging the device to be charged on the power propagation device.
24. The system of claim 23, wherein the device to be charged comprises a second wireless power receiving coil of a wearable device, wherein:
the second wireless power receiving coil is configured to receive the magnetic flux from the second means for wireless power transmitting of the power propagation device;
the power propagation device comprises a hanger to be hung on the
protruding magnetic component; and
wearable device comprises one or more additional devices to be charged.
25. The system of any combination of claims 21 -22, wherein the first wireless power receiving coil and the second means for wireless power transmitting are components of a first passive power circuit, the power propagation device further comprising a second power passive circuit, wherein a load impedance decrease generates an increase in power and current provided by a power amplifier of the charging device.
PCT/US2015/054823 2014-12-23 2015-10-09 Wireless power transmitting coil disposed around a protruding magnetic component Ceased WO2016105629A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580062154.6A CN107112770B (en) 2014-12-23 2015-10-09 Wireless power transmitting coils arranged around protruding magnetic components
EP15873869.0A EP3238318B1 (en) 2014-12-23 2015-10-09 Wireless power transmitting coil disposed around a protruding magnetic component
TW104138533A TWI590560B (en) 2014-12-23 2015-11-20 Apparatus, method and system for wireless charging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/580,594 2014-12-23
US14/580,594 US20160181851A1 (en) 2014-12-23 2014-12-23 Wireless power transmitting coil disposed around a protruding magnetic component

Publications (1)

Publication Number Publication Date
WO2016105629A1 true WO2016105629A1 (en) 2016-06-30

Family

ID=56130578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/054823 Ceased WO2016105629A1 (en) 2014-12-23 2015-10-09 Wireless power transmitting coil disposed around a protruding magnetic component

Country Status (5)

Country Link
US (1) US20160181851A1 (en)
EP (1) EP3238318B1 (en)
CN (1) CN107112770B (en)
TW (1) TWI590560B (en)
WO (1) WO2016105629A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10110018B2 (en) 2014-12-23 2018-10-23 Intel Corporation Wireless power repeating
US20160352133A1 (en) 2015-05-26 2016-12-01 Intel Corporation Wireless power transmitting coil disposed at an input device
WO2017099771A1 (en) * 2015-12-10 2017-06-15 Intel Corporation Enclosure to recharge smart-charging clothing
US10797504B2 (en) * 2016-05-19 2020-10-06 Motorola Solutions, Inc. System, method and device for wireless power transfer
WO2018000298A1 (en) * 2016-06-30 2018-01-04 Intel Corporation Computing system with external wireless charging coil
US10958089B2 (en) * 2016-11-15 2021-03-23 The Prophet Corporation Wearable device charger
USD847089S1 (en) 2016-11-15 2019-04-30 The Prophet Corporation Base station for charging wristband devices
CN109149724A (en) * 2018-10-22 2019-01-04 广州吻吻科技有限公司 A kind of wireless charger
US11183861B2 (en) * 2019-10-25 2021-11-23 Robert Charles DeMaio External watch battery and charging device
US20230134920A1 (en) * 2021-08-02 2023-05-04 Plume Design, Inc. Portable electronic charging case with a compact design and advanced functionality

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130015244A (en) * 2011-08-02 2013-02-13 엘지전자 주식회사 Electronic device capable of being wirelessly charged
US20140008995A1 (en) * 2012-07-05 2014-01-09 Panasonic Corporation Wireless power transmission system, power transmitting device, and power receiving device
KR20140095918A (en) * 2013-01-25 2014-08-04 (주)이노타임 Mounted device for wireless charging
US20140265555A1 (en) * 2013-03-15 2014-09-18 Witricity Corporation Series relayed wireless power transfer in a vehicle
JP2014180166A (en) * 2013-03-15 2014-09-25 Toshiba Corp Resonator and radio power transmission device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3157825B2 (en) * 1990-11-19 2001-04-16 アロカ株式会社 Wireless radiation detector
US7263388B2 (en) * 2001-06-29 2007-08-28 Nokia Corporation Charging system for portable equipment
JP3708911B2 (en) * 2002-07-05 2005-10-19 株式会社イトーキ Suspension device and load hanger
US7408324B2 (en) * 2004-10-27 2008-08-05 Access Business Group International Llc Implement rack and system for energizing implements
US7193474B2 (en) * 2004-11-02 2007-03-20 Skyworks Solutions, Inc. Current limit circuit for power amplifiers
JP2009253762A (en) * 2008-04-08 2009-10-29 Sony Corp Radio communication device, wireless communication system, radio communication method and program
JP2010014531A (en) * 2008-07-03 2010-01-21 Fujifilm Corp Electronic device system and image information acquisition method
US9013141B2 (en) * 2009-04-28 2015-04-21 Qualcomm Incorporated Parasitic devices for wireless power transfer
JP5387201B2 (en) * 2009-07-23 2014-01-15 ソニー株式会社 Non-contact power feeding system, non-contact relay device, non-contact power receiving device, and non-contact power feeding method
US8427101B2 (en) * 2009-11-18 2013-04-23 Nokia Corporation Wireless energy repeater
KR101912163B1 (en) * 2012-02-27 2018-10-26 삼성전자주식회사 Method of modulation and demodulation for nano communication,and receiver device using the method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130015244A (en) * 2011-08-02 2013-02-13 엘지전자 주식회사 Electronic device capable of being wirelessly charged
US20140008995A1 (en) * 2012-07-05 2014-01-09 Panasonic Corporation Wireless power transmission system, power transmitting device, and power receiving device
KR20140095918A (en) * 2013-01-25 2014-08-04 (주)이노타임 Mounted device for wireless charging
US20140265555A1 (en) * 2013-03-15 2014-09-18 Witricity Corporation Series relayed wireless power transfer in a vehicle
JP2014180166A (en) * 2013-03-15 2014-09-25 Toshiba Corp Resonator and radio power transmission device

Also Published As

Publication number Publication date
EP3238318A4 (en) 2018-08-15
TWI590560B (en) 2017-07-01
CN107112770B (en) 2020-09-01
CN107112770A (en) 2017-08-29
US20160181851A1 (en) 2016-06-23
EP3238318A1 (en) 2017-11-01
EP3238318B1 (en) 2019-09-04
TW201637318A (en) 2016-10-16

Similar Documents

Publication Publication Date Title
EP3238318B1 (en) Wireless power transmitting coil disposed around a protruding magnetic component
US10110018B2 (en) Wireless power repeating
EP3238221B1 (en) Wireless power receiving coil along a loop of a device
US10644514B2 (en) Resonant power transfer systems with protective algorithm
JP5573190B2 (en) Wireless power supply system
US10656185B2 (en) Planar differential current pickup for wireless power transmission
US20160352133A1 (en) Wireless power transmitting coil disposed at an input device
CN106961168A (en) Shielding of Wireless Power Transmitters
US20160322854A1 (en) Wearable receive coils for wireless power transfer with no electrical contact
EP3350899B1 (en) Methods and apparatus utilizing multi-filar alignment assistance in wireless power transfer applications
US11114884B2 (en) Sensing coil system
Sahany et al. Optimal air-gap of a magnetic resonant inductive link for maximum wireless power transfer
HK1242053A1 (en) System, apparatus and method for facilitating wireless charging of battery-powered devices

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15873869

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2015873869

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE