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WO2016144119A1 - Émetteur/récepteur de charge sans fil du type mince - Google Patents

Émetteur/récepteur de charge sans fil du type mince Download PDF

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Publication number
WO2016144119A1
WO2016144119A1 PCT/KR2016/002413 KR2016002413W WO2016144119A1 WO 2016144119 A1 WO2016144119 A1 WO 2016144119A1 KR 2016002413 W KR2016002413 W KR 2016002413W WO 2016144119 A1 WO2016144119 A1 WO 2016144119A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
wireless charging
slim
charging transceiver
transceiver
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/KR2016/002413
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English (en)
Korean (ko)
Inventor
김재범
방성우
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.)
Pincraft Engineering Inc
Original Assignee
Pincraft Engineering Inc
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 Pincraft Engineering Inc filed Critical Pincraft Engineering Inc
Publication of WO2016144119A1 publication Critical patent/WO2016144119A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H02J4/25—
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils

Definitions

  • the present invention relates to a slim type wireless charging transceiver, and in more detail, the wireless charging transceiver, the transmitter, the coil portion coated coil, magnetic sheet is stacked up / down; A control unit disposed on the side of the coil unit; And an injection unit formed on at least an outer circumferential surface of the control unit, wherein the coil forms a plurality of unit coils in a twisted state, and the receiver provides a slim wireless charging transceiver having a symmetrical structure with the transmitter.
  • portable electronic devices such as smartphones are equipped with a rechargeable secondary battery as a battery.
  • a separate charging device for providing electrical energy to a battery of a portable electronic device using a domestic commercial power source is required.
  • the feature phone In the past, the feature phone, the previous generation of smartphones, was charged for two to three days or more if it was recharged, and when it was adopted as a large battery, it was possible to use it for close to one week.
  • the complexity of devices and the increasing number of components have increased the power demands required to drive each component. Therefore, the capacity expansion technology of the battery to maintain the power state of the smart phone for a sufficient time in response to this power demand has become important, its development must be accompanied by the essential.
  • wired chargers can be installed and used in customer service at stores, but due to the necessity of power connection, the limitation of the length of the wire, and the limitation of the charger mounting place, there is a certain degree of generalization to customers.
  • the charging device can be charged only by a wire, but with the development of technology, a wireless charging transceiver has been developed in recent years and is widely used. The limitations listed can be greatly alleviated.
  • Wireless charging is basically performed by using electromagnetic induction of the coil.
  • the magnetic flux passing through the coil inside the charging target device for example, the mobile phone
  • changes, the voltage and current are generated accordingly, and the mobile phone is charged. It is possibly converted.
  • the transformer is to transfer the magnetic field using the iron core, whereas the wireless charger has a problem that the efficiency is very low because the air is transferred to the medium. Therefore, it is necessary to secure close distance because the magnetic field strength is considerably weakened even if the device to be charged such as a charger and a mobile phone is slightly dropped in distance.
  • such a wireless charging device has a function to greatly reduce the constraints on the installation place as described above. That is, there is an advantage that can be installed in any place where the charging target device can be placed wireless charging receiver. For example, if a wireless charging receiver is installed in a table of a coffee shop, the table itself becomes a table having a wireless charging function. This is the maximum application of the advantage of the magnetic transmission method.
  • Wireless charging technology converts power into wireless power and sends the wireless power from the wireless charging transmitter and transmitter to the power unit of the DUT (Device Under Test). It is divided into a wireless charging receiver.
  • the basic structure of the conventional wireless charging transmitter 1 includes a control unit 50 for converting wired power to wireless power, a coil unit 10 for transmitting / receiving wireless power, and an induction method.
  • the wireless charging transceiver Since the wireless charging transceiver has been developed and integrated directly into a miniaturized product, a lot of miniaturization design technology has been advanced. However, since the classical coil method of the wireless charging transceiver has been standardized, there is a big limitation in the miniaturization of the structure.
  • the research on the wireless charging transceiver has been required to slim the product at least within the range of maintaining the coil method, and further, the development of a wireless charging transceiver capable of improving the function as a transceiver is urgently needed.
  • an object of the present invention is to place the metallic plate at the bottom of the coil portion and optionally the bottom of the control portion so that radiation driven by the coil is directed in the opposite direction of the metallic plate.
  • an object of the present invention is to place the metallic plate at the bottom of the coil portion and optionally the bottom of the control portion so that radiation driven by the coil is directed in the opposite direction of the metallic plate.
  • Another object of the present invention is to enhance the durability and reliability of the product in spite of the thin thickness by reinforcing the problem of the mechanical properties caused by thinning the thickness of the wireless charging transceiver through the metallic plate.
  • Another object of the present invention is to minimize the influence of the coil unit on the control unit by reducing the contact area of the coil unit and the control unit, thus improving the operating efficiency of the control unit.
  • another object of the present invention is to deepen the slimming level of the wireless charging transceiver by performing an insert injection process together with a metallic plate and the like when forming the coil, film, etc. as necessary.
  • another object of the present invention is to further reduce the thickness by placing the control portion directly on the side of the coil portion and the ejection portion constituting the thickness of the transceiver, without having to directly participate in forming the thickness of the wireless charging transceiver. By minimizing the spacing between the coils formed in each of the power transmission to minimize the loss.
  • another object of the present invention is to provide a wireless charging transceiver that realizes a thin thickness while further enhancing the efficiency and strength in terms of electromagnetic radiation by the coil by further strengthening the magnetic properties of the metallic plate.
  • another object of the present invention is to provide a slim wireless charging transceiver that can further reduce the loss caused by the injection portion during power transmission and double the efficiency of power transmission by excluding the formation of the injection portion locally relative to the coil portion.
  • another object of the present invention is to provide a slim wireless charging transceiver that can minimize the scope of the replacement part only because the coil unit can be replaced simply, apart from the control unit in case of failure of the coil unit.
  • another object of the present invention is to use a coated coil, without installing the coil on the substrate, but a very fine coil can be used after the twist to give a plurality of coils, coil for electrospinning It is to provide a slim wireless charging transceiver with better radiation characteristics by increasing the cross-sectional area of the overall.
  • another object of the present invention is to provide a slim wireless charging transceiver that can further reduce the thickness as a whole by placing the coil on a magnetic material without installing on a substrate.
  • another object of the present invention is to form a groove in a portion of the magnetic body on which the coil is mounted, by providing a groove on the traveling path of the both ends of the coil when both ends of the coil and the control unit is connected, overlapping the coil when there is no groove It is to provide a slim wireless charging transceiver that can further reduce the thickness of the charger because it does not become thick in the interval.
  • the present invention provides a wireless charging transceiver, wherein the transmitter comprises: a coil part in which a coated coil and a magnetic sheet are stacked up and down; A control unit disposed on the side of the coil unit; And an injection unit formed on at least an outer circumferential surface of the control unit, wherein the coil forms a plurality of unit coils in a twisted state, and the receiver provides a slim wireless charging transceiver having a symmetrical structure with the transmitter.
  • the magnetic sheet is preferably made of ferrite, amorphous metal, soft magnetic material or ferromagnetic material.
  • the metallic plate is preferably made of sus (SUS), phosphor bronze, aluminum, gold, silver or copper.
  • the metallic plate is coated, deposited or painted with magnetic material.
  • the magnetic material is an amorphous metal.
  • the metallic plate is preferably manufactured by insert injection together with the injection portion.
  • the control unit may be disposed side by side on one side of the coil unit, or formed in a form surrounding the outer circumferential portion of the coil unit.
  • the upper exterior portion for sealing the upper portion of the coil portion preferably further includes.
  • the upper exterior portion is preferably a film to be attached, a coating by painting or vapor deposition, or an insert injection molding.
  • the film is preferably made of PC (Polycarbonate), PI (Polyimide) or PET (Polyethylene Terephtalate).
  • the injection molded product extends further to the lower surface of the metallic plate.
  • the coil is preferably formed by insert injection on the magnetic sheet or below the upper exterior portion.
  • the metallic plate may be installed to extend to the lower end of the control unit, or the metallic plate may be separately installed at the lower end of the control unit.
  • the magnetic sheet is provided with a groove portion, and both ends connected to the control portion of the coated coil pass through the groove portion.
  • the radiation driven by the coil is maximized in the opposite direction of the metallic plate, and thus the effect of increasing the power efficiency of the wireless charging transceiver is more effective. It is expected.
  • the present invention is expected to have the effect of improving the durability and reliability of the product despite the thin thickness by reinforcing through the metallic plate the problem of mechanical properties caused by thinning the thickness of the wireless charging transceiver through the metal plate. .
  • the present invention is expected to have an effect of making the wireless charging transceiver thinner by performing an insert injection process when forming coils, films, and the like as necessary.
  • the present invention does not directly participate in forming the thickness of the wireless charging transceiver, but substantially thinner by placing the side of the coil portion and the ejection portion constituting the thickness of the transceiver, and from there between the coils respectively formed in the transmitter and receiver By minimizing the gap, the effect of minimizing the transmission loss of power is expected.
  • the present invention is expected to further enhance the magnetic properties, the effect of achieving a thin thickness while enhancing the efficiency in terms of electromagnetic radiation is expected.
  • the present invention is expected to have an effect of reducing the loss in power transmission and improve the efficiency by eliminating the formation of the injection portion for the coil portion.
  • the present invention is expected to have an effect that can minimize the scope of the replacement parts only because the coil unit can be replaced simply, apart from the control unit when the coil unit is defective.
  • the present invention does not install the coil of the coil portion on the substrate, it uses a coated one, but can be used after the production of a strand by giving a very small number of twisted coils, the overall cross-sectional area of the coil for electrospinning The effect is expected to increase so that the radiation property is better.
  • the present invention is expected to have the effect of further reducing the thickness as a whole by placing the coil on the magnetic body without installing on the substrate.
  • the present invention forms a groove in a portion of the magnetic body on which the coil is mounted, by providing a groove in the traveling path of both ends of the coil when both ends of the coil and the control unit is connected, the thickness in the overlap section of the coil in the absence of the groove Since the thickening can be prevented, an effect that can further reduce the thickness of the charger is expected.
  • FIG. 1 is a schematic diagram illustrating a conventional wireless charging transmitter
  • FIG. 2 is a schematic diagram illustrating a transceiver according to a preferred embodiment of the present invention
  • FIG. 3 is a schematic diagram illustrating another transmitter according to a preferred embodiment of the present invention.
  • FIG. 4 is a schematic diagram illustrating an example of a transmitter according to a preferred embodiment of the present invention.
  • FIG. 5 is a plan view showing the configuration of the control unit according to an embodiment of the present invention.
  • FIG. 6 is a plan view of a magnetic sheet provided with a groove portion according to an exemplary embodiment of the present invention.
  • FIG. 7 is a bottom view of FIG. 6.
  • FIG. 8 is a cross-sectional view of FIG. 6.
  • FIG. 2 is a schematic diagram illustrating a transceiver in accordance with a preferred embodiment of the present invention.
  • the wireless charging transceiver of the present invention includes a transmitter 100 connected to an AC power source through an adapter 150 and a receiver 200 wirelessly supplied with power to the transmitter 100.
  • 200 is connected to a power storage, that is, a battery B of an electronic device (DUT), charges the battery, and supplies driving energy of the electronic device.
  • a power storage that is, a battery B of an electronic device (DUT)
  • the transmitter, the coil 111, the magnetic sheet 113 and the metallic plate 115 is a coil unit 110 is stacked up / down; A control unit 130 disposed on the side of the coil unit 110; And an injection unit 120 formed on at least an outer circumferential surface of the control unit 130 or 130.
  • the receiver 200 forms a symmetrical structure with the transmitter 100.
  • the coil 111 is covered and is raised on the magnetic sheet 113 as it is. That is, it does not need a separate substrate for supporting the coil 111, in particular, although not shown, the coil 111 is manufactured in a state in which a plurality of unit coil strands having a fine thickness are twisted with each other Because of this, the coil cross-sectional area for radiation is large, and therefore the radiation characteristic is better.
  • the control unit 130 is in the most basic form, but is present on the side of the coil unit 110, and does not have a substrate (for example, a separate substrate) to support it separately below. This is because the separate description is opposed to implementing the slim type wireless charger pursued by the present invention. That is, only the control unit 130 exists on the side of the coil unit 110.
  • the metallic plate 115 is installed to extend to the lower region of the control unit 130, or by separately installing the metallic plate on the lower end of the control unit 130, up to the control unit 130 with the external device It is possible to shield, it is easy to give the mechanical, mechanical protection function of the control unit 130.
  • the arrangement position of the coil unit 110 and the control unit 130 is arranged in a cross-sectional parallel relationship forms a feature of the present invention.
  • the injection part 120 is formed at least on the outer circumferential surface of the control part 130, the formation of such an injection part 120 is not necessarily required under the coil 111 part, and thus the injection part 120 is provided.
  • the formation of the injection part 120 for the protection of the control part 130 is conventionally in addition to the coil part 110 and the control part 130 when the coil part 110 and the control part 130 are disposed up and down.
  • the coil unit 110 since the control unit 130 is disposed at the side, the coil unit 110 may not require the formation of the injection unit 120, so that the injection unit 120 may be used. By avoiding the formation of), the overall thickness of the radio transceiver can be reduced.
  • the moving distance of the power radiated by the coil 111 is shortened, and thus, power loss can be reduced and smooth power transmission is possible.
  • the transceivers 100 and 200 include a transmitter 100 connected to an AC power source through an adapter 150 and a receiver 200 that is wirelessly supplied with power to the transmitter 100.
  • the battery B is connected to the battery B of an electronic device (DUT) to charge the battery B and supply driving energy to the electronic device.
  • DUT electronic device
  • Each of the transmitter 100 and the receiver 200 includes a control unit 130 and a coil unit 110. As shown in FIG. Therefore, redundant description is omitted, and only the transmitter 100 will be described below with reference to the drawings.
  • FIG. 3 is a schematic diagram illustrating a transmitter according to a preferred embodiment of the present invention.
  • the transmitter 100 includes a coil 111, a ferrite sheet 113 as a magnetic sheet, and a sus frame 115 as a metallic plate.
  • Coil unit 110 arranged in a stack up / down, disposed on the side of the coil unit 110, may be arranged side by side, may be arranged to surround the coil unit, a control unit provided with a PCB 131 130, optionally applied, the film 140 is attached to the upper portion of the coil unit 110; And an injection part 120 which is selectively applied and is molded in an area other than the upper part of the coil part 110.
  • the magnetic sheet and the metallic plate are named as general words, but the ferrite sheet and the sus frame are expressed by one embodiment, and thus, may be replaced with other materials as described below. do.
  • the coil 111 is for wireless transmission, and the ferrite sheet 113 transmits power to the upper portion, and serves to maximize the directionality of the magnetic field generated by the coil by blocking power leakage to the lower portion.
  • the sus frame 115 is also for improving the directionality of electromagnetic waves generated by the coil.
  • the ferrite sheet 113 may be replaced with another material as long as it has magnetic properties. That is, since the amorphous metal, soft magnetic material, or ferromagnetic material may be used as the material, the material of the sheet is not limited to only ferrite.
  • the sus frame 115 is a metallic plate, and is installed to build the reliability of the product by reinforcing the rigidity of the device as well as the above function, if the material is given such a function is not necessarily limited thereto. Therefore, the sus frame 115 may be made of a material that replaces phosphor bronze, gold, silver, copper or aluminum.
  • the ferrite sheet 113 and sus frame 115 will have a common function in improving the radiation efficiency which is a very important concept in the field of wireless power transmission.
  • the magnet to the sus frame 115 may be further coupled to the magnetic material or further coating the magnetic material over some or all of it, which further doubles the efficiency of power transmission for wireless charging It is expected to be able to perform.
  • the method of providing the magnet to the sus frame 115 is preferably a coating, which is to configure the thickness of the sus frame 115 as thin as possible, and thus the sus frame (by coating a amorphous metal or the like) 115).
  • the amorphous metal as described above, it is preferable to apply, for example, an amorphous metal and a ferrite sheet, which is a heterogeneous material, as the magnetic sheet.
  • using an amorphous metal as a magnetic sheet, and coating the amorphous metal in order to add more magnetism to the sus frame 115 is to coat the amorphous metal on the sus frame 115 in a double, which is excluded from the process It is not.
  • the ferrite sheet 113 is coupled to the coil unit 110 and the metallic plate 115 by lamination, whereas the amorphous metal that replaces the ferrite sheet 113 may be coated by the coil unit ( Since it is formed on the lower portion of the 110 or the upper portion of the metallic plate 115, the method of forming the laminated structure may vary slightly depending on the material.
  • the injection part 120 of the present invention is formed by the insert injection method using the coil part 110 and the control part 130 as a parent. It is also possible to exclude the formation of the injection part with respect to the coil part 110 in part or all.
  • the insert injection method when used, injection of a coating form is possible, and thus, the thickness of the product itself may be more slim.
  • Such insert injection is also possible for insert injection having only the sus frame 115 as a matrix. That is, it is also possible to form the injection part here by using the sus frame 115 as an insert. In particular, the injection unit 120 is formed only on the opposite side to the coil direction of the sus frame 115, it is possible to use the insert injection method.
  • the injection unit 120 may be formed on only one surface of the coil unit.
  • the injection unit 120 may be excluded from the coil unit 110.
  • the coil part 110 may or may not form the injection part 120 locally or overall. If the formation of the injection part 120 is excluded from the coil part 110, the injection part 120 is provided only in the control part 130, and the control part 130 requires the external protection means so that the coil part 110 may be used. Even if the formation of the injection unit 120 is excluded, the control unit 130 must be provided with the injection unit 120.
  • the present invention has the advantage of smooth power transmission with the receiver 200 by excluding the injection unit 120 from the coil unit 110 which is a direct means of power transmission. That is, in the related art, the injection unit 120 must be provided over the entire apparatus, and thus, the overall thickness becomes thick, so that there is a limit of the transmission / reception performance. Since the adhesion state between the transmitter 100 and the receiver 200 is maintained to the maximum with the film 140 interposed therebetween, the effect of power transmission may be doubled.
  • the film 140 functions as an upper exterior part to seal the upper part of the coil part. Therefore, the material and shape of the upper exterior portion need not necessarily be a film, but if the thickness of the radio transceiver is to be slimmer, the shape of the film is preferable to other bulk inclusions.
  • the film 140 is attached to the upper portion of the coil unit 110 of the transmitter 100 or the receiver 200, it is preferably a PC Flim (Polycarbonate film).
  • PC Flim Polycarbonate film
  • PI Polyimide
  • PET Polyethylene Terephtalate
  • the film may be formed by various methods such as the insert method, the painting method, the coating method, the deposition method, as well as the method of attachment as described above. Therefore, the formation method of the film 140 should not be limited separately.
  • the coil unit 110 may be manufactured as an independent module first. A detailed description thereof will be described with reference to FIG. 4.
  • FIG. 4 is a schematic diagram illustrating an example of a transmitter according to an exemplary embodiment of the present invention.
  • the transmitter 100 uses the first injection unit 121 to form the coil unit 110 as a mother, and the control unit 130 disposed on the side of the coil unit 110 as a parent. 130, the second injection unit 123 is formed to wrap as if wrapped, wherein the first injection unit 121 and the second injection unit 123 are preferably formed by insert injection.
  • the coil unit 110 can be modularized, and thus, at least when the coil unit 110 is defective, an economic effect that can minimize the scope of replacement. You can expect. That is, in the related art, when an error of the coil unit 110 or the control unit 130 occurs, all components have a laminated structure, but all have to be replaced, but according to the present invention, any one of the parallel structures may be replaced because of the parallel coupling relationship. It may be possible to. Therefore, the economics of device maintenance are expected.
  • FIG. 5 is a plan view showing the configuration of the control unit according to an embodiment of the present invention.
  • control unit of the present invention may be installed side by side on one side of the coil unit (a), in particular, it is possible to be installed radially around the coil unit (b).
  • both of these embodiments have commonality in providing a control unit on the side of the coil unit, and the configuration of the two embodiments is only slightly different.
  • FIG. 6 is a plan view of a magnetic sheet provided with a groove part according to an exemplary embodiment of the present invention
  • FIG. 7 is a rear view of FIG. 6
  • FIG. 8 is a sectional view of FIG. 6.
  • the wireless charger according to the present invention may prevent rigidity by imparting rigidity to the housing 160 except for the metal plate.
  • Groove portions 150-1 and 150-2 are processed in a portion of the magnetic sheet 113, and both ends 111-1 and 111-2 of the coil 111 provided on the magnetic sheet 113 are disposed on the side surfaces thereof.
  • the control unit 130 When connected to the control unit 130 is provided, via the grooves (150-1, 150-2).
  • the grooves 150-1 and 150-2 are absent, the thickness of the wireless charger may be thickened by the overlap between the ends 111-1 and 111-2 of the coil and the coil 111. have.

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

Abstract

La présente invention porte sur un émetteur/récepteur de charge sans fil du type mince, et plus précisément sur un émetteur/récepteur de charge sans fil du type mince présentant : un émetteur qui comprend une partie bobine dans laquelle une bobine revêtue et une feuille de substance magnétique sont empilées et agencées verticalement, une partie de commande agencée sur le côté de la partie bobine, et une partie d'injection formée sur au moins la surface circonférentielle extérieure de la partie de commande, la bobine formant un état dans lequel une pluralité de bobines unitaires sont torsadées ; et un récepteur possède une structure symétrique à celle de l'émetteur. La présente invention peut amincir une structure en couches par injection d'insert d'un émetteur à titre de dispositif parent, ce qui permet d'améliorer la compétitivité d'un produit et, également, de s'attendre à un effet de transmission d'énergie plus régulier par élimination d'une partie d'injection d'une partie bobine.
PCT/KR2016/002413 2015-03-10 2016-03-10 Émetteur/récepteur de charge sans fil du type mince Ceased WO2016144119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0033175 2015-03-10
KR1020150033175A KR101659397B1 (ko) 2015-03-10 2015-03-10 슬림형 무선 충전 송수신기

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WO2016144119A1 true WO2016144119A1 (fr) 2016-09-15

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WO2022166221A1 (fr) * 2021-02-03 2022-08-11 华为技术有限公司 Module de bobine, structure d'encapsulation de bobine et dispositif de charge sans fil

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