WO2024010306A1 - 사출형 자기장 차폐부재 및 이를 포함하는 무선전력 수신모듈 - Google Patents
사출형 자기장 차폐부재 및 이를 포함하는 무선전력 수신모듈 Download PDFInfo
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- WO2024010306A1 WO2024010306A1 PCT/KR2023/009320 KR2023009320W WO2024010306A1 WO 2024010306 A1 WO2024010306 A1 WO 2024010306A1 KR 2023009320 W KR2023009320 W KR 2023009320W WO 2024010306 A1 WO2024010306 A1 WO 2024010306A1
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- Prior art keywords
- base portion
- wireless power
- blocking portion
- blocking
- magnetic field
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- 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
- H01F1/0315—Ferrites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
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- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
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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
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- 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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Definitions
- the present invention relates to an injection-type magnetic field shielding member and a wireless power reception module including the same.
- Wireless power transmission technology does not require a separate wired cable when charging, providing greater user convenience. Accordingly, wireless power transmission technology is widely used as a method for charging batteries in various electronic devices.
- Battery charging using such wireless power transmission can satisfy the required charging efficiency only when the wireless power transmission module and wireless power reception module are aligned with each other.
- each of the wireless power transmission module and wireless power reception module places a permanent magnet for alignment on the central part of the antenna. Accordingly, the wireless power transmission module and the wireless power reception module can maintain alignment with each other using the direct current magnetic field generated from the permanent magnet for alignment.
- the shielding member applied to each of the wireless power transmission module and wireless power reception module forms a receiving groove to accommodate the antenna, thereby reducing the influence of permanent magnets.
- the part that defines the receiving groove and surrounds the side of the antenna has no choice but to protrude at a certain height from the plate-shaped part.
- the shielding member is made of highly brittle sintered ferrite, the portion that protrudes from the plate-shaped portion at a certain height to define the receiving groove and surround the side of the antenna is bound to be very vulnerable to external shock.
- each of the wireless power transmission module and wireless power reception module to which the above-described shielding member is applied cannot pass quality certification. There is.
- the shielding member including the receiving groove is made of a sintered ferrite material
- the part that protrudes at a certain height from the plate-shaped part to define the receiving groove is not only smaller in size than the plate-shaped part, but also has a very thin thickness of 3 mm or less. Because of this, deformation such as distortion may occur during the sintering process.
- the receiving groove formed in the shielding member has a size different from the initial design, so there is a limit to the tolerance.
- the present invention was developed in consideration of the above points, and provides an injection-type magnetic field shielding member that can improve the problem of the protruding portion being damaged by impact even if the shielding member includes a protruding portion, and a wireless power reception including the same.
- the purpose is to provide modules.
- the present invention includes a base portion including a placement hole formed through the center portion to have a predetermined area; a ring-shaped first blocking portion that protrudes from the base portion at a certain height along the edge of the placement hole; and an antenna receiving portion defined by one surface of the first blocking portion and one surface of the base portion and formed on one surface of the base portion along the circumferential direction of the first blocking portion, wherein the base portion and the first blocking portion are formed of ferrite powder.
- Provides an injection-type magnetic field shielding member that is integrally formed through injection molding using any one of sandust or nano-crystal grain alloy powder.
- the antenna accommodating part may be formed with a bottom surface inclined at a certain angle.
- the injection-type magnetic field shielding member may further include a ring-shaped second blocking portion that protrudes from the base portion at a certain height in the same direction as the first blocking portion along the edge of the base portion, and the base portion.
- the first blocking portion and the second blocking portion may be formed integrally through injection molding using any one material of ferrite powder, sandust, or nano-crystal grain alloy powder.
- the width of the first blocking portion may be the same as that of the second blocking portion or may be formed to have a wider width than the width of the second blocking portion.
- the protrusion height of the first blocking portion protruding from one surface of the base portion is the same as the protruding height of the second blocking portion protruding from one surface of the base portion or is greater than the protruding height of the second blocking portion protruding from one surface of the base portion. It can be formed to have any size.
- the placement hole may be a space for accommodating permanent magnets for alignment.
- the present invention includes a wireless power reception antenna for receiving wireless power; A permanent magnet for alignment disposed in the center of the wireless power reception antenna; and a shielding member for shielding the magnetic field, wherein the shielding member may be the above-described injection-type magnetic field shielding member, the wireless power receiving antenna may be disposed in the antenna receiving portion, and the permanent magnet for alignment may be disposed in the antenna receiving portion. It can be placed in the placement hole.
- the quality certification problem can be solved by improving the problem of the protruding part being damaged by impact.
- FIG. 1 is a diagram showing an injection-type magnetic field shielding member according to an embodiment of the present invention.
- Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
- Figure 3 is a diagram showing a modified example of Figure 2;
- Figure 4 is a diagram showing an injection-type magnetic field shielding member according to another embodiment of the present invention.
- Figure 5 is a cross-sectional view in the direction B-B of Figure 4.
- Figure 6 is a diagram showing a modified example of Figure 5;
- Figure 7 is a diagram showing a wireless power reception module to which the injection-type magnetic field shielding member of Figure 2 is applied;
- Figure 8 is a diagram showing a wireless power reception module to which the injection-type magnetic field shielding member of Figure 3 is applied;
- Figure 9 is a diagram showing a wireless power reception module to which the injection-type magnetic field shielding member of Figure 5 is applied;
- Figure 10 is a diagram showing a wireless power reception module to which the injection-type magnetic field shielding member of Figure 6 is applied.
- FIG. 11 is a diagram showing the arrangement relationship between the wireless power reception module and the wireless power transmission module of FIG. 10.
- the top surface used in the present specification and claims may refer to the surface viewed from the top with respect to FIG. 1, the bottom surface may refer to the surface viewed from the bottom with respect to FIG. 1, and the sides and sides refer to FIG. 2. It can refer to the side viewed from the left or right side.
- the thickness direction and height direction used in the present specification and claims may mean a direction parallel to the upper surface direction from the upper surface to the lower surface or from the lower surface to the upper surface direction based on FIG. 1, and the width direction is from left to right based on FIG. 2. Alternatively, it may mean a direction parallel to the right to left direction.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention have the material of sintered ferrite. By improving brittleness, damage due to external shock can be prevented.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention are superior to the sintered ferrite when compared to conventional shielding members made of sintered ferrite such as Mn-Zn ferrite or Ni-Zn ferrite. Since it can be implemented at a relatively low cost, production costs can be reduced and price competitiveness can be secured.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention are resistant to the direct current magnetic field generated from the alignment permanent magnet 320 even if the alignment permanent magnet 320 is disposed on the center side. Deterioration in antenna performance can be prevented.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention accommodate the base portion 110, the first blocking portion 120, and the antenna as shown in FIGS. 1 to 6. It may include unit 130.
- the base unit 110 shields the magnetic field generated from a wireless power transmission antenna such as a wireless power transmission antenna (see 510 in FIG. 11) or a wireless power reception antenna (see 310 in FIG. 7) and directs it in the desired direction.
- a wireless power transmission antenna such as a wireless power transmission antenna (see 510 in FIG. 11) or a wireless power reception antenna (see 310 in FIG. 7)
- a wireless power transmission antenna see 510 in FIG. 11
- a wireless power reception antenna see 310 in FIG. 7
- the antenna for wireless power transmission may be a flat coil in which a conductive member is wound multiple times along one direction, and the conductive member may be a known Litz wire.
- the base portion 110 may be made of a magnetic material.
- the base portion 110 may be formed using any one of ferrite powder, sandust, or nano-crystal alloy powder.
- the ferrite powder may be sintered, and the sandust or nano-crystal grain alloy powder may be heat-treated.
- the base portion 110 may include a placement hole 112 for placing the permanent magnet 320 for alignment.
- the permanent magnet 320 for alignment is provided in a ring shape when the magnetic field shielding member (100, 100', 200, 200') according to an embodiment of the present invention is applied to the wireless power receiving module (300, 300', 400, 400'). It may be, but is not limited to this, and may be provided in the shape of a disk or cylinder.
- the placement hole 112 may be formed to penetrate the base portion 110 to a predetermined area.
- the permanent magnet 320 for alignment can be inserted into the placement hole 112, and the permanent magnet 320 for alignment is a permanent magnet for alignment provided in another module corresponding to the wireless power transmission (see Fig. Through interaction with (see 520 of 11), the other modules can be aligned into position.
- the first blocking portion 120 may protrude from the base portion 110 at a certain height along the edge of the placement hole 112.
- the first blocking portion 120 may be provided in a ring shape that protrudes from one surface of the base portion 110 so as to surround the circumference of the placement hole 112.
- the first blocking portion 120 may be made of a magnetic material.
- the first blocking portion 120 may be formed using any one of ferrite powder, sandust, or nano-crystal alloy powder.
- the ferrite powder may be sintered, and the sandust or nano-crystal grain alloy powder may be heat-treated.
- the first blocking portion 120 can serve as a blocking wall that blocks the direct current magnetic field generated from the permanent magnet 320 for alignment inserted into the placement hole 112.
- the injection-type magnetic field shielding members 100, 100', 200, and 200' maintain the first blocking portion 120 even if the alignment permanent magnet 320 is inserted into the placement hole 112. Through this, the magnetic field generated from the alignment permanent magnet 320 can be shielded.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention do not use the alignment permanent magnet 320 even if the alignment permanent magnet 320 is inserted into the placement hole 112. It is possible to prevent performance degradation of the antenna for wireless power transmission due to the direct current magnetic field generated from the device.
- the first blocking portion 120 may be formed integrally with the base portion 110.
- the first blocking portion 120 and the base portion 110 may be formed integrally through injection molding using any one material of ferrite powder, sandust, or nano-crystal grain alloy powder.
- the first blocking part 120 and the base part 110 may be made of the same material, and the first blocking part 120 and the base part 110 may be made of ferrite powder, sandust, or nano-crystal grain alloy. After mixing any one of the powder materials and the binder, it can be formed as a single piece through pressure molding using a mold.
- the binder may include a mixture of nylon, PPS, etc.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention have improved brittleness because the sintering process is omitted, and the brittleness can be improved during the sintering process. It is possible to fundamentally prevent deformation problems such as distortion that may occur.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention are raised at a certain height from the base portion 110 to shield the direct current magnetic field generated from the alignment permanent magnet 320. Even if the protruding first blocking portion 120 is included, the problem of the first blocking portion 120 protruding from the base portion 110 being damaged by impact can be improved. Through this, the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention can solve quality certification problems caused by damage.
- the first blocking portion 120 and the base portion 110 are integrally formed through pressure molding using a mold. , it is possible to fundamentally prevent deformation problems such as distortion that may occur during the sintering process or heat treatment process. Through this, the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention can significantly reduce the possibility of tolerance occurring due to deformation.
- the antenna accommodating part 130 may be formed on one surface of the base part 110.
- the antenna receiving portion 130 is connected to one surface of the first blocking portion 120 and It may be defined by one side of the base portion 110, and may be formed on one side of the base portion 110 along the circumferential direction of the first blocking portion 120, which is formed in a ring shape.
- the antenna accommodating part 130 may be defined by the upper surface of the base part 110 and the side surface of the first blocking part 120 with reference to FIG. 2, and the antenna accommodating part 130 is It may be formed on the upper surface of the base portion 110 along the outer peripheral surface of the first blocking portion 120.
- Such an antenna accommodating portion 130 may be a space where an antenna for wireless power transmission is placed, and may accommodate the thickness of the antenna for wireless power transmission.
- the coil body of the flat coil may be disposed in the antenna accommodating portion 130, and The thickness of the flat coil disposed in the antenna accommodating part 130 can be accommodated by the protrusion height h1 of the first blocking part.
- the protrusion height (h1) of the first blocking portion which protrudes at a certain height from one surface of the base portion 110, may be equal to or greater than the thickness of the planar coil.
- the direct current magnetic field generated from the permanent magnet 320 for alignment is By being blocked through the first blocking unit 120, performance degradation of the planar coil due to the direct current magnetic field can be prevented.
- the injection-type magnetic field shielding members 200 and 200' protrude at a certain height from the base portion 110 along the edge of the placement hole 112, as shown in FIGS. 4 to 6.
- a ring-shaped second ring-shaped protrusion is formed at a certain height from the base portion 110 in the same direction as the first blocking portion 120 along the edge of the base portion 110. It may further include a blocking portion 140.
- the antenna receiving portion 130 formed on one surface of the base portion 110 may be formed in the shape of a groove with an open top.
- the antenna receiving part 130 is the first blocking part 130. It may be defined by one side of the first blocking portion 120, one side of the base portion 110, and one side of the second blocking portion 140, and the first blocking portion 120 and the second blocking portion are formed in a ring shape. It may be formed on one side of the base portion 110 to be located between the secondary blocking portions 140.
- the antenna accommodating part 130 is formed by the upper surface of the base part 110, the outer surface of the first blocking part 120, and the inner surface of the second blocking part 140 with reference to FIG. 5. It may be defined, and the antenna receiving portion 130 is formed on the upper surface of the base portion 110 along the outer peripheral surface of the first blocking portion 120 and the inner peripheral surface of the second blocking portion 140. It can be.
- the inner edge of the flat coil may be wrapped around the outer peripheral surface of the first blocking part 120, and the flat coil The outer border may be wrapped around the inner circumferential surface of the second blocking portion 140.
- the second blocking part 140 may be made of a magnetic material like the base part 110 and the first blocking part 120.
- the second blocking portion 140 may be formed using any one of ferrite powder, sandust, or nano-crystal alloy powder.
- the ferrite powder may be sintered, and the sandust or nano-crystal grain alloy powder may be heat-treated.
- the second blocking part 140 can shield the magnetic field like the base part 110 and the first blocking part 120.
- the second blocking portion 140 may be formed integrally with the base portion 110.
- the second blocking portion 140 and the base portion 110 may be formed integrally through injection molding using any one of ferrite powder, sandust, or nano-crystal grain alloy powder.
- first blocking part 120, the second blocking part 140, and the base part 110 may be made of the same material, and the first blocking part 120, the second blocking part 140 And the base portion 110 may be formed integrally by mixing any one of ferrite powder, sandust, or nano-crystal grain alloy powder with a binder and then press molding using a mold.
- the binder may include a mixture of nylon, PPS, etc.
- the injection-type magnetic field shielding members 200 and 200' may have improved brittleness since the sintering process is omitted, and the brittleness that may occur during the sintering process can be improved. Deformation problems such as distortion can be prevented at the source.
- the injection-type magnetic field shielding members 200 and 200' according to an embodiment of the present invention have the first blocking portion 120 and the second blocking portion 140, respectively, protruding from the base portion 110 at a certain height. Even if it is included, the problem of the first blocking part 120 and the second blocking part 140 protruding from the base part 110 being damaged by impact can be improved. Through this, the injection-type magnetic field shielding members 200 and 200' according to an embodiment of the present invention can solve quality certification problems caused by damage.
- the injection-type magnetic field shielding members 200 and 200' according to an embodiment of the present invention include the first blocking portion 120. Since the second blocking portion 140 and the base portion 110 are formed as one body through pressure molding using a mold, deformation problems such as distortion that may occur during the sintering process or heat treatment process can be fundamentally prevented. Through this, the injection-type magnetic field shielding members 200 and 200' according to an embodiment of the present invention can significantly reduce the possibility of tolerance occurring due to deformation.
- the injection-type magnetic field shielding members 200 and 200' according to an embodiment of the present invention are manufactured using a mold even if the antenna accommodating part 130 has a complex shape, such as an approximately ' ⁇ '-shaped cross section with an open top. Since it can be formed as a single piece through pressure molding, the possibility of tolerances occurring can be significantly reduced by preventing deformation problems such as distortion that may occur during the sintering or heat treatment process.
- each of the first blocking portion 120 and the second blocking portion 140 may be formed in a ring shape having a closed loop shape as described above, and the first blocking portion 120 may be formed as the second blocking portion. It may be provided to have a relatively smaller size than the unit 140.
- the width (t1) of the first blocking part is the same as the width (t2) of the second blocking part or is provided to have a wider width than the width (t2) of the second blocking part. It can be, and the protrusion height (h1) of the first blocking part protruding from one surface of the base part 110 is the same as the protruding height (h2) of the second blocking part protruding from one surface of the base part 110. It may be formed to have a size larger than the protrusion height h2 of the second blocking portion protruding from one surface of the base portion 110.
- the bottom surface 132 of the antenna accommodating part may be formed as a horizontal surface, or may be formed as an inclined surface inclined at a certain angle. .
- the base part ( 110) may be formed to be inclined so that the thickness is thinner.
- the wireless power transmission antenna disposed along the slope of the antenna accommodating portion 130 Can be arranged so that the central portion has a convex shape on one side.
- the wireless power transmission antenna can further increase the concentration of the magnetic field by changing the shape of the central portion to be convex, thereby improving wireless power transmission efficiency.
- injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention may be implemented as a wireless power transmission module.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') may be implemented as wireless power reception modules (300, 300', 400, and 400') as shown in FIGS. 7 to 10, , the wireless power receiving modules (300, 300', 400, 400') can be applied to a smart watch.
- the wireless power reception modules 300, 300', 400, and 400' include a wireless power reception antenna 310 for receiving wireless power, a permanent magnet 320 for alignment disposed in the center of the wireless power reception antenna 310, and It may include a shielding member for shielding a magnetic field, and the shielding member may be the injection-type magnetic field shielding member (100, 100', 200, or 200') described above.
- the wireless power reception antenna 310 may be a flat coil disposed in the antenna receiving portion 130, and the alignment permanent magnet 320 is provided in a ring shape to form the placement hole 112. can be placed in
- the planar coil may be a conductive member having a certain length wound multiple times in a clockwise or counterclockwise direction to form a coil body, and the coil body may include a hollow portion formed with a predetermined area in the center.
- the coil body may be formed of a single layer or multiple layers.
- the conductive member forming the coil body of the planar coil may be composed of a plurality of wires having a predetermined wire diameter, and the surface of the plurality of wires may be insulated with a coating material having insulating properties, The plurality of wires may be twisted together along the length direction or may be arranged parallel to each other along one direction.
- the wireless power reception modules 300, 300', 400, and 400' can receive wireless power transmitted from a wireless power transmission module provided in a wireless charger for a wearable such as a smart watch, as shown in FIG. 11.
- the planar coil has a central portion convex upward. can be formed.
- the wireless power transmission module includes a wireless power transmission antenna 510 provided as a flat coil, a permanent magnet 520 for alignment disposed in the center of the wireless power transmission antenna 510, and a magnetic field to shield the magnetic field. It may include a shielding member 530 for, and the wireless power transmission antenna 510 has a central portion convex downward with respect to FIG. 11 so that it can face the wireless power reception antenna 310 at a regular interval. It can be provided.
- the wireless power transmission antenna 510 may be a flat coil in which a conductive member is wound multiple times in one direction, and the flat coil has a conductive member having a certain length wound multiple times in a clockwise or counterclockwise direction. It may be formed to form a coil body.
- the coil body may include a hollow portion formed with a predetermined area in the center, and the coil body may be formed as a single layer or multiple layers.
- the conductive member forming the coil body of the planar coil may be composed of a plurality of wires having a predetermined wire diameter, and the surface of the plurality of wires may be insulated with a coating material having insulating properties, The plurality of wires may be twisted together along the length direction or may be arranged parallel to each other along one direction.
- the wireless power transmitted from the wireless power transmission antenna 510 can be smoothly transmitted toward the wireless power reception antenna 310 disposed on the inclined surface.
- the injection-type magnetic field shielding members (100, 100', 200, and 200') according to an embodiment of the present invention have been described as being applied to the wireless power receiving modules (300, 300', 400, and 400'), the wireless power receiving antenna 310 When replaced with a wireless power transmission antenna, the wireless power reception modules 300, 300', 400, and 400' described above may be implemented as wireless power transmission modules built into a wireless charger.
- the wireless power reception antenna 310 disposed in the antenna accommodating part 130 is described as being provided as a flat coil, but it is not limited to this and may be provided as an antenna pattern formed on a circuit board. there is.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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Abstract
Description
Claims (12)
- 중앙부에 소정면적을 갖도록 관통형성되는 배치공을 포함하는 베이스부;상기 배치공의 테두리를 따라 상기 베이스부로부터 일정높이 돌출형성되는 링형상의 제1차단부; 및상기 제1차단부의 일면과 상기 베이스부의 일면에 의해 규정되고 상기 제1차단부의 둘레방향을 따라 상기 베이스부의 일면에 형성되는 안테나 수용부;를 포함하고,상기 베이스부 및 제1차단부는 페라이트 분말, 샌더스트 또는 나노 결정립 합금 분말 중 어느 하나의 재질을 이용하여 사출성형을 통해 일체로 형성된 것인 사출형 자기장 차폐부재.
- 제1항에 있어서,상기 안테나 수용부는 바닥면이 일정각도 기울어지는 경사면으로 형성되는 사출형 자기장 차폐부재.
- 제1항에 있어서,상기 사출형 자기장 차폐부재는,상기 베이스부의 테두리를 따라 상기 제1차단부와 동일한 방향으로 상기 베이스부로부터 일정높이 돌출형성되는 링형상의 제2차단부를 더 포함하고,상기 베이스부, 제1차단부 및 제2차단부는 페라이트 분말, 샌더스트 또는 나노 결정립 합금 분말 중 어느 하나의 재질을 이용하여 사출성형을 통해 일체로 형성된 것인 사출형 자기장 차폐부재.
- 제3항에 있어서,상기 제1차단부의 폭은 상기 제2차단부의 폭과 동일하거나 상기 제2차단부의 폭보다 더 넓은 폭을 갖도록 형성되는 사출형 자기장 차폐부재.
- 제3항에 있어서,상기 베이스부의 일면으로부터 돌출되는 상기 제1차단부의 돌출높이는 상기 베이스부의 일면으로부터 돌출되는 상기 제2차단부의 돌출높이와 동일하거나 상기 베이스부의 일면으로부터 돌출되는 상기 제2차단부의 돌출높이보다 더 큰 크기를 갖도록 형성되는 사출형 자기장 차폐부재.
- 제1항에 있어서,상기 배치공은 정렬용 영구자석을 수용하기 위한 공간인 사출형 자기장 차폐부재.
- 무선전력을 수신하기 위한 무선전력 수신 안테나;상기 무선전력 수신 안테나의 중앙부에 배치되는 정렬용 영구자석; 및자기장을 차폐하기 위한 차폐부재;를 포함하고,상기 차폐부재는,상기 정렬용 영구자석이 배치될 수 있도록 중앙부에 관통형성되는 배치공을 포함하는 베이스부;상기 배치공의 테두리를 따라 상기 베이스부로부터 일정높이 돌출형성되는 링형상의 제1차단부; 및상기 제1차단부의 일면과 상기 베이스부의 일면에 의해 규정되고 상기 무선전력 수신 안테나가 수용될 수 있도록 상기 제1차단부의 둘레방향을 따라 상기 베이스부의 일면에 형성되는 안테나 수용부;를 포함하며,상기 베이스부 및 제1차단부는 페라이트 분말, 샌더스트 또는 나노 결정립 합금 분말 중 어느 하나의 재질을 이용하여 사출성형을 통해 일체로 형성된 것인 무선전력 수신모듈.
- 제7항에 있어서,상기 안테나 수용부는 바닥면이 일정각도 기울어지는 경사면으로 형성되는 무선전력 수신모듈.
- 제7항에 있어서,상기 차폐부재는,상기 베이스부의 테두리를 따라 상기 제1차단부와 동일한 방향으로 상기 베이스부로부터 일정높이 돌출형성되는 링형상의 제2차단부를 더 포함하고,상기 베이스부, 제1차단부 및 제2차단부는 페라이트 분말, 샌더스트 또는 나노 결정립 합금 분말 중 어느 하나의 재질을 이용하여 사출성형을 통해 일체로 형성된 것인 무선전력 수신모듈.
- 제9항에 있어서,상기 제1차단부의 폭은 상기 제2차단부의 폭과 동일하거나 상기 제2차단부의 폭보다 더 넓은 폭을 갖도록 형성되는 무선전력 수신모듈.
- 제9항에 있어서,상기 베이스부의 일면으로부터 돌출되는 상기 제1차단부의 돌출높이는 상기 베이스부의 일면으로부터 돌출되는 상기 제2차단부의 돌출높이와 동일하거나 상기 베이스부의 일면으로부터 돌출되는 상기 제2차단부의 돌출높이보다 더 큰 크기를 갖도록 형성되는 무선전력 수신모듈.
- 제7항에 있어서,상기 배치공은 정렬용 영구자석을 수용하기 위한 공간인 무선전력 수신모듈.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/992,561 US20260018332A1 (en) | 2022-07-08 | 2023-07-03 | Injection-molding-type magnetic field shielding member and wireless power reception module comprising same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0084281 | 2022-07-08 | ||
| KR1020220084281A KR20240007419A (ko) | 2022-07-08 | 2022-07-08 | 사출형 자기장 차폐부재 및 이를 포함하는 무선전력 수신모듈 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024010306A1 true WO2024010306A1 (ko) | 2024-01-11 |
Family
ID=89453795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/009320 Ceased WO2024010306A1 (ko) | 2022-07-08 | 2023-07-03 | 사출형 자기장 차폐부재 및 이를 포함하는 무선전력 수신모듈 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20260018332A1 (ko) |
| KR (1) | KR20240007419A (ko) |
| WO (1) | WO2024010306A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130015719A1 (en) * | 2011-07-14 | 2013-01-17 | Chun-Kil Jung | Core assembly for wireless power transmitting device and wireless power transmitting device having the same |
| KR20170018677A (ko) * | 2015-08-10 | 2017-02-20 | 주식회사 아모센스 | 차량용 무선충전 송신모듈 |
| KR20170137494A (ko) * | 2016-06-03 | 2017-12-13 | 엘지이노텍 주식회사 | 무선 전력 송신기 |
| KR20180038281A (ko) * | 2016-10-06 | 2018-04-16 | 엘지이노텍 주식회사 | 무선 충전을 위한 코일 블록 및 그것의 제조 방법 |
| KR20210121567A (ko) * | 2020-03-30 | 2021-10-08 | 니덱모빌리티코리아 주식회사 | 일체형 베이스를 갖는 차량용 무선 충전 장치 |
-
2022
- 2022-07-08 KR KR1020220084281A patent/KR20240007419A/ko not_active Ceased
-
2023
- 2023-07-03 WO PCT/KR2023/009320 patent/WO2024010306A1/ko not_active Ceased
- 2023-07-03 US US18/992,561 patent/US20260018332A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130015719A1 (en) * | 2011-07-14 | 2013-01-17 | Chun-Kil Jung | Core assembly for wireless power transmitting device and wireless power transmitting device having the same |
| KR20170018677A (ko) * | 2015-08-10 | 2017-02-20 | 주식회사 아모센스 | 차량용 무선충전 송신모듈 |
| KR20170137494A (ko) * | 2016-06-03 | 2017-12-13 | 엘지이노텍 주식회사 | 무선 전력 송신기 |
| KR20180038281A (ko) * | 2016-10-06 | 2018-04-16 | 엘지이노텍 주식회사 | 무선 충전을 위한 코일 블록 및 그것의 제조 방법 |
| KR20210121567A (ko) * | 2020-03-30 | 2021-10-08 | 니덱모빌리티코리아 주식회사 | 일체형 베이스를 갖는 차량용 무선 충전 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240007419A (ko) | 2024-01-16 |
| US20260018332A1 (en) | 2026-01-15 |
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