WO2019070294A1 - Dispositifs de charge sans fil - Google Patents

Dispositifs de charge sans fil Download PDF

Info

Publication number
WO2019070294A1
WO2019070294A1 PCT/US2017/055594 US2017055594W WO2019070294A1 WO 2019070294 A1 WO2019070294 A1 WO 2019070294A1 US 2017055594 W US2017055594 W US 2017055594W WO 2019070294 A1 WO2019070294 A1 WO 2019070294A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
wireless charging
charging device
disposed
transmitting coil
Prior art date
Application number
PCT/US2017/055594
Other languages
English (en)
Inventor
Chien-Ting Lin
Chi-Hao Chang
Kuan-Ting Wu
Original Assignee
Hewlett-Packard Development Company, L.P.
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 Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2017/055594 priority Critical patent/WO2019070294A1/fr
Publication of WO2019070294A1 publication Critical patent/WO2019070294A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/16—Water cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • 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—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries

Definitions

  • Electronic devices such as mobile phones, headphones, tablets, and/or laptops, etc. may utilize rechargeable batteries to provide power to the electronic device.
  • a battery of an electronic device may be wireiessly charged.
  • a wireless charging pad may wireiessly charge a rechargeable battery of an electronic device positioned on and/or near the wireless charging pad.
  • Figure 1 illustrates an example of a wireless charging device consistent with the disclosure.
  • Figure 2 illustrates an example of a wireless charging device consistent with the disclosure.
  • Figure 3 illustrates a perspective view of an example of a wireless charging device consistent with the disclosure.
  • Figure 4 is a schematic illustration of an example of a system including a wireless charging device consistent with the disclosure.
  • Figure 5 illustrates an example of a wireless charging device consistent with the disclosure. Detailed Description
  • An electronic device such as a mobile phone, headphones, a tablet, and/or a laptop, among other types of electronic device can include a battery.
  • the battery can be a rechargeable battery.
  • the rechargeable battery may be wirelessiy charged by a wireless charging device.
  • wireless charging devices refer to electronic devices that can wirelessiy charge a rechargeable battery of an electronic device.
  • Wirelessiy charging i.e., wireless charging, wirelessiy charge
  • wireless charging refers to charging a battery of an electronic device in the absence of a wired connection between the electronic device and a source of power external to the electronic device that provides power to charge the rechargeable battery.
  • a wireless charging device may wirelessiy charge a battery of an electronic device positioned on and/or near the wireless charging device.
  • a wireless charging device may include a power transmitting coil and wireless charging support circuitry.
  • the power transmitting coil may transmit power (e.g., inductively) to a battery of an electronic device, while the wireless charging support circuitry may provide functions to the wireless charging device but itself is not directly utilized for the transmission of power from the wireless charging device to the battery of the electronic device.
  • the transmission of power from the wireless charging device to an electronic device can cause the wireless charging device and the electronic device to increase in temperature, increasing temperatures of a wireless charging device may reduce the charging performance of the wireless charging device. For example, the wireless charging device may decrease in efficiency, charging speed, etc.
  • a wireless charging device may include a combination of thermal conductive plastic, heat dissipating metals, and a liquid such as a high specific heat capacity liquid to improve the charging speed and efficiency of wireless charging as compared to other approaches such as those that do not employ a liquid. That is, the combination of thermal conductive plastic, heat dissipating metals, and liquid (e.g., high specific heat capacity liquid) in a wireless charging device may resolves hot spot issues and/or extend the life of the wireless charging device.
  • Figure 1 illustrates an example of a wireless charging device 100 consistent with the disclosure.
  • the wireless charging device 100 may be used in conjunction with a variety of electronic devices such as mobile phones, headphones, tablets, and/or laptops, etc.
  • the wireless charging device 100 can include a first housing 102, a power transmitting coil 104, and a second housing 106.
  • the first housing 102 can have an internal volume defined by a top surface 108, a plurality of side surfaces 1 10, and a bottom surface 1 12.
  • the top surface 108 can be comprised of thermal conductive plastic with a thermal conductivity of higher than 3 watts per meter-kelvin (W/m-K).
  • the top surface 108 can be comprised of electric insulation plastic with an electrical resistivity of higher than 10 ohm-meters (Q m).
  • the top surface 108 can be substantially coplanar with the bottom surface 1 12. As used herein, being substantially coplanar refers to being on (in terms of degree) the same or similar plane but being spaced apart from the other surface.
  • the bottom surface 1 12 can be comprised out of thermal conductive plastic with a thermal conductivity higher than 3 watts per meter- kelvin (W/m-K).
  • the top surface 108 can be comprised of electric insulation plastic with an electrical resistivity higher than 10 ohm-meters (Q m).
  • the bottom surface 1 12 can be comprised of a heat dissipating metal formed of aluminum, silver, magnesium, copper, or combinations thereof, in some examples, a bottom surface 1 12 comprised of heat dissipating metal can cause the heat produced by the wireless charging device to dissipate or release into the environment, in various examples, the bottom surface 1 12 can be substantially coplanar with the top surface 108,
  • the first housing 102 can include four side surfaces 1 10 extending from a top surface 108 or the bottom surface 1 12 in a direction towards the other of the top surface 108 or bottom surface 1 12.
  • side surfaces 1 10 can include any surface that extends from the top surface 108 or the bottom surface 1 12 in a direction towards the other of the top surface 108 or bottom surface 1 12.
  • the wireless charging device 100 can include an individual side surface 1 10 or more side surfaces 1 10 extending from a top surface 108 or the bottom surface 1 12 in a direction towards the other of the top surface 108 or bottom surface 1 12,
  • the side surfaces 1 10 can be comprised of a heat dissipating metal formed of aluminum, silver, magnesium, copper, or combinations thereof. In some examples, the side surfaces 1 10 can extending from a top surface 108 or the bottom surface 1 12 in a direction towards the other of the top surface 108 or bottom surface 1 12. In some examples, side surfaces 1 10 comprised of heat dissipating metal can cause the heat produced by the wireless charging device to dissipate or release into the environment.
  • the first housing 102 can form an exterior surface of the wireless charging device 100.
  • the power transmitting coil 104 can be disposed in the first housing 102.
  • the power transmitting coil 104 can be entirely disposed within the first housing 102. That is, while the power transmitting coil 104 is illustrated as visible in Figure 1 , it is understood that, in various examples, the power transmitting coil 04 is disposed within the first housing 102 and not visible to an end user of the wireless charging device 100 (unless the housing were formed of a material that is transparent/semi-transparent).
  • the power transmitting coil 104 can be a resonator coil.
  • a resonator coil refers to equipment that can wireiessiy transmit power. Examples of resonator coils include a wire coil and/or a printed circuit board coil.
  • the power transmitting coil 104 can include a soienoidai wire, among other suitable types of power transmitting coils 104 to wireless transmit power to an electronic device.
  • the second housing 106 can be disposed within the first housing 102.
  • the second housing 106 can be entirely disposed within the first housing 102. That is, while the second housing 106 is illustrated as visible in Figure 1 , it is understood that, in various examples, the second housing 106 is disposed within the first housing 102 and not visible to an end user of the wireless charging device 100 (unless the housing were formed of a material that is transparent/semi-transparent).
  • the second housing 106 can form a cavity 107 within which liquid can be disposed.
  • the second housing 106 can occupy from 40 to 90% of the internal volume of the first housing 102, All individual values and subranges from 40 to 90% volume are included and disclosed herein.
  • the second housing 106 can occupy an internal volume of the first housing 102 ranging from a lower limit of 40, 50, 60, 70, or 80% volume to an upper limit of 45, 55, 65, 75, 85, or 90% volume.
  • the second housing 106 can occupy an internal volume of the first housing 102 from 40 to 90% volume, or in the alternative, from 40 to 60% volume, or in the alternative from 60 to 90% volume, or in the alternative from 50 to 80% volume.
  • FIG. 2 illustrates an example of a wireless charging device 200 consistent with the disclosure.
  • the wireless charging device 200 may be used in conjunction with a variety of electronic devices such as mobile phones, headphones, tablets, and/or laptops, etc.
  • the wireless charging device 200 can include a first housing 202, a power transmitting coil 204, and a second housing 206.
  • the first housing 202 can have an internal volume defined by a top surface 208, side surfaces 210, and a bottom surface 212.
  • the top surface 208 can be substantially coplanar with the bottom surface 212.
  • the first housing 202 can include four side surfaces 210 extending from a top surface 208 or the bottom surface 212 in a direction towards the other of the top surface 208 or bottom surface 212.
  • the wireless charging device 200 can include an individual side surface 210 or more side surfaces 210 extending from a top surface 208 or the bottom surface 212 in a direction towards the other of the top surface 208 or bottom surface 212.
  • the first housing 202 can form an exterior surface of the wireless charging device 200.
  • the power transmitting coil 204 can be disposed in the first housing 202.
  • the power transmitting coil 204 can be entirely disposed within the first housing 202. That is, while the power transmitting coil 204 is illustrated as visible in Figure 2, it is understood that, in various examples, the power transmitting coil 204 is disposed within the first housing 202 and not visible to an end user of the wireless charging device 200.
  • the second housing 206 can be disposed within the first housing 202.
  • the second housing 206 can be entirely disposed within the first housing 202. That is, while the second housing 206 is illustrated as visible in Figure 2, it is understood that, in various examples, the second housing 206 is disposed within the first housing 202 and not visible to an end user of the wireless charging device 200.
  • the second housing 206 can form a cavity 207 within which liquid can be disposed, in some examples, the second housing 206 can occupy from 40 to 90% of the internal volume of the first housing 202.
  • the first housing 202 can include an opening 2 8 to communicate liquid (or transfer liquid in and out of the wireless charging device 200).
  • the second housing 206 can include an opening 216 to communicate liquid (or transfer liquid in and out of the wireless charging device 200).
  • the opening 216 can be coupled to the opening 218.
  • a seal 220 can be used to close the opening 216 and the opening 218.
  • FIG 3 illustrates a perspective view of an example of a wireless charging device 300 consistent with the disclosure.
  • the wireless charging device 300 is a perspective view of wireless charging device 100 taken along the line 101 as described herein with respect to Figure 1.
  • the wireless charging device 300 may be used in conjunction with a variety of electronic devices such as mobile phones, headphones, tablets, and/or laptops, etc.
  • the wireless charging device 300 can include a first housing 302, a power transmitting coil 304, and a second housing 306.
  • the first housing 302 can have an internal volume defined by a top surface 308, side surfaces 310, and a bottom surface 312.
  • the first housing 302 can form an exterior surface of the wireless charging device 300.
  • the power transmitting coil 304 can be disposed in the first housing 302.
  • the power transmitting coil 304 can be entirely disposed within the first housing 302. That is, while the power transmitting coil 304 is illustrated as visible in Figure 3, if is understood that, in various examples, the power transmitting coil 304 is disposed within the first housing 302 and not visible to an end user of the wireless charging device 300.
  • the second housing 306 can be disposed within the first housing 302.
  • the second housing 306 can be entirely disposed within the first housing 302. That is, while the second housing 306 is illustrated as visible in Figure 3, it is understood that, in various examples, the second housing 306 is disposed within the first housing 302 and not visible to an end user of the wireless charging device 300.
  • the second housing 306 can form a cavity 307 within which liquid can be disposed, in some examples, the second housing 306 can occupy from 40 to 90% of the internal volume of the first housing 302.
  • the wireless charging device 300 displays the vertical (along the 399 axis) stacking or layering of the internal volume of the first housing 302.
  • the top surface 308 can comprises the first layer of the wireless charging device 300.
  • the second housing 306 can comprises the second layer of the wireless charging device 300.
  • the second housing 306 can be adjacent to the top surface 308 comprising the first layer of the wireless charging device 300.
  • the power transmitting coil 304 can comprises the third layer of the wireless charging device 300.
  • the power transmitting coil 304 can be adjacent to the second housing 306 comprising the second layer of the wireless charging device 300.
  • the bottom surface 312 can comprises the fourth layer of the wireless charging device 300.
  • the bottom surface 312 can be adjacent to the power transmitting coil 304 comprising the third layer of the wireless charging device 300.
  • the stacking arrangement of the wireless device 300 can allow the second housing 306, forming a cavity 307 within which liquid can be disposed, to be positioned between the power transmitting coil 304 and the top surface 308.
  • the wireless device 300 can have an electronic device positioned on and/or near the top surface 308.
  • FIG. 4 is a schematic illustration of an example of a system including a wireless charging device 400 consistent with the disclosure.
  • the system 428 can include a power cord 424 that is coupled to the wireless charging device 400,
  • the system 428 can include power supply 426 that can power the wireless charging device 400.
  • the system 428 can include a power supply 426 coupled to a power cord 424 coupled to a wireless charging device 400.
  • FIG. 5 illustrates an example of a wireless charging device 500 consistent with the disclosure.
  • the wireless charging device 500 may be used in conjunction with a variety of electronic devices such as mobile phones, headphones, tablets, and/or laptops, etc.
  • the wireless charging device 500 can include a first housing 502, a power transmitting coil 504, a second housing 506, and a power interconnect 522.
  • the first housing 502 can have an internal volume defined by a top surface 508, side surfaces 510, and a bottom surface 512.
  • the top surface 508 can be substantially coplanar with the bottom surface 512.
  • the first housing 502 can include four side surfaces 510 extending from a top surface 508 or the bottom surface 512 in a direction towards the other of the top surface 508 or bottom surface 512.
  • the wireless charging device 500 can include an individual side surface 510 or more side surfaces 510 extending from a top surface 508 or the bottom surface 512 in a direction towards the other of the top surface 508 or bottom surface 512.
  • the first housing 502 is coupled to a power
  • the power interconnect 522 can be located on any surface of the first housing 502. That is, while the power interconnect 522 is illustrated as being coupled to the side surface 510 in Figure 5, it is understood that, in various examples, the power interconnect 522 can be coupled to the top surface 508, the bottom surface 512, or any side surface 510 of the first housing 502. in some examples, a power cord 524 can be detached from the wireless charging device 500. In various examples, the power cord 524 can be coupled to the power interconnect 522,
  • the first housing 502 can form an exterior surface of the wireless charging device 500.
  • the power transmitting coil 504 can be disposed in the first housing 502.
  • the power transmitting coil 504 can be entirely disposed within the first housing 502. That is, while the power transmitting coil 504 is iliustrated as visible in Figure 5, it is understood that, in various examples, the power transmitting coil 504 is disposed within the first housing 502 and not visible to an end user of the wireless charging device 500,
  • the second housing 506 can be disposed within the first housing 502.
  • the second housing 506 can be entirely disposed within the first housing 502. That is, while the second housing 506 is illustrated as visible in Figure 5, it is understood that, in various examples, the second housing 506 is disposed within the first housing 502 and not visible to an end user of the wireless charging device 500.
  • the second housing 506 can occupy from 40 to 90% of the internal volume of the first housing 502.
  • the second housing 506 can form a cavity 507 within which liquid can be disposed.
  • a liquid 514 can be disposed in the second housing 506.
  • the liquid 514 disposed in the cavity 507 of the second housing 506 can be a high specific heat capacity liquid with a specific heat capacity higher than 4.0 kilojoules per kilogram- Kelvin (kj/Kg - K).
  • a number of an element and/or feature can refer to one or more of such elements and/or features. Further still, while some elements are designated as a “top” or a “bottom” those in the art will recognize that such elements may correspond to other relative terms or possible orientations in some applications in order to practice the examples of this disclosure.

Landscapes

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

Abstract

Les exemples donnés dans la présente invention concernent des dispositifs de charge sans fil. Par exemple, un dispositif de charge sans fil peut comprendre un premier boîtier, une bobine de transmission d'énergie disposée dans le premier boîtier, et un second boîtier disposé dans le premier boîtier à proximité de la bobine de transmission d'énergie, le second boîtier comprenant une cavité servant à recevoir un liquide.
PCT/US2017/055594 2017-10-06 2017-10-06 Dispositifs de charge sans fil WO2019070294A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2017/055594 WO2019070294A1 (fr) 2017-10-06 2017-10-06 Dispositifs de charge sans fil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2017/055594 WO2019070294A1 (fr) 2017-10-06 2017-10-06 Dispositifs de charge sans fil

Publications (1)

Publication Number Publication Date
WO2019070294A1 true WO2019070294A1 (fr) 2019-04-11

Family

ID=65995261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/055594 WO2019070294A1 (fr) 2017-10-06 2017-10-06 Dispositifs de charge sans fil

Country Status (1)

Country Link
WO (1) WO2019070294A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108048A1 (fr) * 2008-02-27 2009-09-03 Delft University Of Technology Chargeur électrique pour accumulateur ou batterie
US20120001496A1 (en) * 2010-06-30 2012-01-05 Panasonic Corporation Wireless power transfer system and power transmitting/receiving device with heat dissipation structure
US20150280483A1 (en) * 2014-03-26 2015-10-01 Apple Inc. Temperature management for inductive charging systems
US20160349795A1 (en) * 2012-05-04 2016-12-01 Jpmorgan Chase Bank, N.A. System and method for mobile device docking station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108048A1 (fr) * 2008-02-27 2009-09-03 Delft University Of Technology Chargeur électrique pour accumulateur ou batterie
US20120001496A1 (en) * 2010-06-30 2012-01-05 Panasonic Corporation Wireless power transfer system and power transmitting/receiving device with heat dissipation structure
US20160349795A1 (en) * 2012-05-04 2016-12-01 Jpmorgan Chase Bank, N.A. System and method for mobile device docking station
US20150280483A1 (en) * 2014-03-26 2015-10-01 Apple Inc. Temperature management for inductive charging systems

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