CN211529758U - A hexagon receiving coil for unmanned aerial vehicle is wireless to be charged - Google Patents
A hexagon receiving coil for unmanned aerial vehicle is wireless to be charged Download PDFInfo
- Publication number
- CN211529758U CN211529758U CN201922182561.9U CN201922182561U CN211529758U CN 211529758 U CN211529758 U CN 211529758U CN 201922182561 U CN201922182561 U CN 201922182561U CN 211529758 U CN211529758 U CN 211529758U
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- hexagon
- coil
- receiving coil
- unmanned aerial
- aerial vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a hexagon receiving coil for unmanned aerial vehicle wireless charging, it includes hexagon receiving coil body, the fixed strip, the magnetic core, hexagon coil and shielding layer, hexagon receiving coil body inside is provided with the symmetric center point, be provided with the inner ring between hexagon receiving coil body and the symmetric center point, hexagon receiving coil body outside is provided with the outer loop, be provided with hexagon coil on the hexagon receiving coil body, hexagon coil coiling is fixed on hexagon receiving coil body, hexagon coil's outer loop and inner ring central line junction are provided with the fixed strip, the fixed strip passes through the glue adhesion on hexagon coil, evenly be provided with a plurality of magnetic core on the hexagon coil, the magnetic core top is provided with the shielding layer, the shielding layer is arranged in the magnetic core top, hug closely the unmanned aerial vehicle chassis; the utility model has the advantages of effectively reduce coil weight, reduce the coil volume, use more nimble light, high efficiency, high power.
Description
Technical Field
The utility model belongs to the technical field of unmanned aerial vehicle is wireless to charge, concretely relates to a hexagon receiving coil that is used for unmanned aerial vehicle wireless to charge.
Background
Due to the limitation of load bearing capacity, the unmanned aerial vehicle has limited carrying battery capacity, insufficient cruising ability and limited cruising range, and becomes one of bottleneck problems limiting the further development of the unmanned aerial vehicle; at present, the charging of the unmanned aerial vehicle mainly depends on a mode of manually plugging and unplugging a plug, the mode reduces the operation range of the unmanned aerial vehicle, and the unmanned aerial vehicle cannot get rid of the human action in the charging process even if a relay charging station is used for supplying electric energy to the unmanned aerial vehicle; the unmanned aerial vehicle needs to be charged frequently, so that a charging technology which is efficient, rapid, safe and reliable is an important means for popularization of the unmanned aerial vehicle; compared with the traditional wired charging mode, the wireless power supply technology is safer and more flexible, and is an important trend for the development of future unmanned aerial vehicles; the coil is one of important components in an unmanned aerial vehicle wireless charging system, and the design performance of the coil directly influences key indexes such as transmission distance, transmission power and transmission efficiency of wireless charging; the existing unmanned aerial vehicle wireless charging system mostly adopts a circular receiving coil, and the receiving efficiency, the volume, the weight and other aspects of the existing unmanned aerial vehicle wireless charging system cannot well meet the requirement of high-power wireless quick charging of the unmanned aerial vehicle; therefore, it is very necessary to provide a hexagonal receiving coil for wireless charging of an unmanned aerial vehicle, which effectively reduces the weight and volume of the coil, is more flexible and portable to use, and has high efficiency and high power.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, and provide an effective reduction coil weight, reduce the coil volume, use the hexagon receiving coil who is used for the wireless charging of unmanned aerial vehicle more nimble light, high efficiency, high power.
The purpose of the utility model is realized like this: a hexagonal receiving coil for wireless charging of an unmanned aerial vehicle comprises a hexagonal receiving coil body, a fixing strip, magnetic cores, a hexagonal coil and a shielding layer, wherein the hexagonal receiving coil body comprises an inner ring, an outer ring and a symmetrical central point, the symmetrical central point is arranged inside the hexagonal receiving coil body, the inner ring is arranged between the hexagonal receiving coil body and the symmetrical central point, the outer ring is arranged outside the hexagonal receiving coil body, the hexagonal coil is arranged on the hexagonal receiving coil body, the hexagonal coil is wound and fixed on the hexagonal receiving coil body, the fixing strip is arranged at the central line connecting part of the outer ring and the inner ring of the hexagonal coil, the fixing strip is adhered to the hexagonal coil through glue, and the hexagonal coil is uniformly provided with a plurality of magnetic cores, the magnetic core top be provided with the shielding layer, the shielding layer arrange the magnetic core top in, hug closely the unmanned aerial vehicle chassis.
The number of the fixing strips is 6, and the fixing strips are placed along the middle lines of the opposite sides of the hexagonal coils.
The diameter of a wire adopted by the hexagonal coil is 4.6mm, the turn-to-turn distance between two adjacent turns is 0mm, the number of wound turns is 20 turns, the right angle line of the inner ring regular hexagon is 170mm, and the right angle line of the outer ring hexagon is 330 mm.
The hexagonal coil is internally provided with a regular hexagon with the size equal to that of the inner ring, and the hexagonal coil is externally provided with a hexagon with the size equal to that of the outer ring and obtained after chamfering.
The magnetic cores are made of ferrite materials and are cuboid, and the number of the magnetic cores is 12.
The shielding layer is an aluminum plate shielding layer, and the thickness of the shielding layer is 0.56 mm.
The utility model has the advantages that: the utility model discloses a hexagon receiving coil body, fixed strip, magnetic core, hexagon coil and shielding layer, the inner ring of hexagon coil is regular hexagon, and the outer loop is the hexagon through the chamfer processing, and its stacked structure is by supreme being down in proper order: the fixing strip, the hexagonal coil, the magnetic core and the shielding layer, the shielding layer at the uppermost layer is tightly attached to the chassis of the unmanned aerial vehicle, and the utility model is a hexagonal receiving coil designed by the utility model, the receiving efficiency can reach 96.5 percent at most, the receiving efficiency is effectively improved, the shielding layer is arranged above the magnetic core and is tightly attached to the chassis of the unmanned aerial vehicle, the functions of reducing eddy current, reducing magnetic leakage and the like are achieved, the high-efficiency and high-power work of the wireless charging system is ensured, and the shielding layer adopts the aluminum plate shielding layer, which can effectively reduce the weight by 26 percent and is more flexible and portable to use, the unmanned aerial vehicle has very remarkable advantages in the application occasion of high-power wireless quick charging of the unmanned aerial vehicle, in addition, the shape of the unmanned aerial vehicle can be designed according to the chassis of the unmanned aerial vehicle, the unmanned aerial vehicle is more humanized, the unmanned aerial vehicle can be suitable for the chassis of the unmanned aerial vehicle with various models, and the universality and the practicability of the utility model are improved; the utility model has the advantages of effectively reduce coil weight, reduce the coil volume, use more nimble light, high efficiency, high power.
Drawings
Fig. 1 is the utility model relates to an initial structure schematic diagram that is used for wireless hexagon receiving coil who charges of unmanned aerial vehicle.
Fig. 2 is the utility model relates to a local structure enlarges the schematic diagram for wireless hexagon receiving coil who charges of unmanned aerial vehicle.
Fig. 3 is the utility model relates to an outer loop chamfer method schematic diagram that is used for wireless hexagon receiving coil who charges of unmanned aerial vehicle.
Fig. 4 is the utility model relates to a structure schematic diagram after the coiling shaping of hexagon receiving coil for unmanned aerial vehicle is wireless to be charged.
Fig. 5 is the utility model relates to a crosssectional side view cascade diagram that is used for wireless hexagon receiving coil who charges of unmanned aerial vehicle.
In the figure: 1. hexagonal receiving coil body 101, inner ring 102, outer ring 103, center of symmetry 201, first block 202, second block 203, line segment 204, perpendicular 205, arc 301, hexagonal coil 302, fixed bar 303, magnetic core 304, shielding layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-5, a hexagonal receiving coil for wireless charging of an unmanned aerial vehicle comprises a hexagonal receiving coil body 1, a fixing strip 302, a magnetic core 303, a hexagonal coil 301 and a shielding layer 304, wherein the hexagonal receiving coil body 1 comprises an inner ring 101, an outer ring 102 and a symmetrical center 103, the symmetrical center 103 is arranged inside the hexagonal receiving coil body 1, the inner ring 101 is arranged between the hexagonal receiving coil body 1 and the symmetrical center 103, the outer ring 102 is arranged outside the hexagonal receiving coil body 1, the hexagonal coil 301 is arranged on the hexagonal receiving coil body 1, the hexagonal coil 301 is wound and fixed on the hexagonal receiving coil body 1, the fixing strip 302 is arranged at the connection position of the outer ring 102 of the hexagonal coil 301 and the center line of the inner ring 101, and the fixing strip 302 is adhered to the hexagonal coil 301 through glue, hexagonal coil 301 on evenly be provided with a plurality of magnetic core 303, magnetic core 303 top be provided with shielding layer 304, shielding layer 304 arrange magnetic core 303 top in, hug closely the unmanned aerial vehicle chassis.
The utility model discloses a hexagon receiving coil body 1, fixed strip 302, magnetic core 303, hexagon coil 301 and shielding layer 304, hexagon coil 301's inner ring 101 is regular hexagon, and outer loop 102 is the hexagon through the chamfer processing, and its stacked structure is by supreme being in proper order down: the fixing strip 302, the hexagonal coil 301, the magnetic core 303 and the shielding layer 304, the shielding layer 304 at the uppermost layer is tightly attached to the chassis of the unmanned aerial vehicle, and the hexagonal receiving coil designed by the utility model benefits from scientific structural design, the receiving efficiency can reach 96.5 percent at most, the receiving efficiency is effectively improved, the shielding layer 304 is arranged above the magnetic core 303 and is tightly attached to the chassis of the unmanned aerial vehicle, the effects of reducing eddy current, reducing magnetic leakage and the like are achieved, the high-efficiency and high-power work of the wireless charging system is ensured, moreover, the shielding layer 304 adopts an aluminum plate shielding layer, which can effectively reduce the weight by 26 percent, is more flexible and portable to use, the unmanned aerial vehicle has very remarkable advantages in the application occasion of high-power wireless quick charging of the unmanned aerial vehicle, in addition, the shape of the unmanned aerial vehicle can be designed according to the chassis of the unmanned aerial vehicle, the unmanned aerial vehicle is more humanized, the unmanned aerial vehicle can be suitable for the chassis of the unmanned aerial vehicle with various models, and the universality and the practicability of the utility model are improved; the utility model has the advantages of effectively reduce coil weight, reduce the coil volume, use more nimble light, high efficiency, high power.
Example 2
As shown in fig. 1-5, a hexagonal receiving coil for wireless charging of an unmanned aerial vehicle comprises a hexagonal receiving coil body 1, a fixing strip 302, a magnetic core 303, a hexagonal coil 301 and a shielding layer 304, wherein the hexagonal receiving coil body 1 comprises an inner ring 101, an outer ring 102 and a symmetrical center 103, the symmetrical center 103 is arranged inside the hexagonal receiving coil body 1, the inner ring 101 is arranged between the hexagonal receiving coil body 1 and the symmetrical center 103, the outer ring 102 is arranged outside the hexagonal receiving coil body 1, the hexagonal coil 301 is arranged on the hexagonal receiving coil body 1, the hexagonal coil 301 is wound and fixed on the hexagonal receiving coil body 1, the fixing strip 302 is arranged at the connection position of the outer ring 102 of the hexagonal coil 301 and the center line of the inner ring 101, and the fixing strip 302 is adhered to the hexagonal coil 301 through glue, hexagonal coil 301 on evenly be provided with a plurality of magnetic core 303, magnetic core 303 top be provided with shielding layer 304, shielding layer 304 arrange magnetic core 303 top in, hug closely the unmanned aerial vehicle chassis.
For better effect, the number of the fixing strips 302 is 6, the fixing strips are placed along the middle lines of the opposite sides of the hexagonal coil 301, and the fixing strips 302 are adhered to the hexagonal coil 301 through glue, so that the effect of fixing the hexagonal coil 301 is achieved.
For better effect, the diameter of the wire adopted by the hexagonal coil 301 is 4.6mm, the turn-to-turn distance between two adjacent turns is 0mm, the number of wound turns is 20, the right angle of the regular hexagon of the inner ring 101 is 170mm, the right angle of the hexagon of the outer ring 102 is 330mm, and when the coil is wound, the inner ring 101 starts to wind the outer ring 102; the first ring takes a symmetrical point 103 of the coil structure as a central point, and a regular hexagon inner ring is wound according to the set diameter of the inner ring 101; from the second turn, gradually winding a regular hexagon towards the outer ring 102 according to the requirement of the turn-to-turn distance between two adjacent turns; specifically as shown in fig. 2, fig. 2 is an enlarged schematic diagram of a local structure of hexagon receiving coil body 1 for unmanned aerial vehicle wireless charging, wherein W is the wire diameter that the coiling was used, S is the turn-to-turn distance between two adjacent turns, can adjust according to the practical application demand, when the coiling is to being close outer loop 102, for avoiding appearing the closed angle of outer loop 102, make the coil structure more balanced simultaneously, firm, carry out unified chamfer processing to outer loop 102 during the coil coiling, the coil need be coiled at the chamfer within range.
For better effect, the inside of the hexagonal coil 301 is a regular hexagon with the size equal to that of the inner ring 101, and the outside is a hexagon with the size equal to that of the outer ring 102 obtained after chamfering, as shown in fig. 3, fig. 3 is a schematic diagram of an outer ring 102 chamfering method for a hexagonal receiving coil for wireless charging of an unmanned aerial vehicle, a vertex of the upper left corner of the square 201 coincides with a vertex angle of the inner ring 101 of the hexagonal coil 301, the upper side of the square is flush with a perpendicular line (a dotted line in the drawing) from the vertex of the inner ring 101 of the hexagonal coil 301 to a corresponding side of the outer ring 102, and the square 201 rotates upwards by 60 degrees around the vertex of the upper; taking the vertex angle of the inner ring 101 as a starting point, and making a straight line along the bottom edge direction of the block 202 to obtain a line segment 203 vertical to the bottom edge of the outer ring 102; considering that each turn is not a regular hexagon when the coil is wound, when drawing the arc 205 of the arc sector, the following method is adopted: taking the position of the coil of the second turn as a starting point, namely, translating the top point of the inner ring 101 to the right (S + w), and making a straight line vertical to the upper side of the block 201 upwards to intersect with the block 202 at a point A; taking a as a starting point, a perpendicular line 204 is drawn to the bottom right side of the outer ring 102, a vertex is taken as a, and the arc 205 is drawn by taking the line segments 203 and 204 as radii, so that the outer ring 102 of the hexagonal coil 301 can be chamfered.
For better effect, the magnetic core 303 is made of ferrite material, and has a cuboid shape, the number of the magnetic core 303 is 12, the ferrite generally refers to a composite oxide of iron group and one or more other appropriate metal elements, belongs to a semiconductor, and is used as a magnetic medium, the magnetic core 303 is made of ferrite material, and can obtain better magnetic conduction effect, the magnetic core 303 is a cuboid-shaped magnetic core, and is dispersedly placed on a coil according to ampere's law after ignoring displacement current, so that magnetic leakage is effectively reduced, and the mutual inductance of the coil is increased, the 12 cuboid-shaped magnetic cores 303 are placed on the hexagonal coil 301, and the placing mode is as follows: the six magnetic cores 303 are placed on six edges of the hexagonal coil 301, and long edges of the six magnetic cores are perpendicular to the six edges of the hexagonal coil respectively; in addition, six magnetic cores 303 are arranged between the chamfer of the outer ring 102 and the vertex of the inner ring 101 of the coil, and the long sides of the six magnetic cores are perpendicular to the diagonal lines of the hexagonal coil 301 respectively, so that the transmission efficiency and the transmission power can be effectively improved.
For better effect, shielding layer 304 be aluminum plate shielding layer, thickness is 0.56mm, shielding layer 304 adopts aluminum plate shielding layer, thickness is 0.56mm, be twice aluminium material skin degree of depth, can be when guaranteeing better shielding effect, can also reduce volume and weight, shielding layer 304 can also reduce the eddy current loss that high frequency magnetic field produced on the unmanned aerial vehicle chassis, in order to promote receiving coil's receiving efficiency, magnetic core 303 top is arranged in to shielding layer 304, hug closely the unmanned aerial vehicle chassis, play and reduce the vortex, reduce effects such as magnetic leakage, its shape can design according to the unmanned aerial vehicle chassis, more have the hommization, the practicality is higher.
The utility model discloses a hexagon receiving coil body 1, fixed strip 302, magnetic core 303, hexagon coil 301 and shielding layer 304, hexagon coil 301's inner ring 101 is regular hexagon, and outer loop 102 is the hexagon through the chamfer processing, and its stacked structure is by supreme being in proper order down: the fixing strip 302, the hexagonal coil 301, the magnetic core 303 and the shielding layer 304, the shielding layer 304 at the uppermost layer is tightly attached to the chassis of the unmanned aerial vehicle, and the hexagonal receiving coil designed by the utility model benefits from scientific structural design, the receiving efficiency can reach 96.5 percent at most, the receiving efficiency is effectively improved, the shielding layer 304 is arranged above the magnetic core 303 and is tightly attached to the chassis of the unmanned aerial vehicle, the effects of reducing eddy current, reducing magnetic leakage and the like are achieved, the high-efficiency and high-power work of the wireless charging system is ensured, moreover, the shielding layer 304 adopts an aluminum plate shielding layer, which can effectively reduce the weight by 26 percent, is more flexible and portable to use, the unmanned aerial vehicle has very remarkable advantages in the application occasion of high-power wireless quick charging of the unmanned aerial vehicle, in addition, the shape of the unmanned aerial vehicle can be designed according to the chassis of the unmanned aerial vehicle, the unmanned aerial vehicle is more humanized, the unmanned aerial vehicle can be suitable for the chassis of the unmanned aerial vehicle with various models, and the universality and the practicability of the utility model are improved; the utility model has the advantages of effectively reduce coil weight, reduce the coil volume, use more nimble light, high efficiency, high power.
Claims (6)
1. The utility model provides a hexagon receiving coil for unmanned aerial vehicle is wireless charges, it includes hexagon receiving coil body, fixed strip, magnetic core, hexagon coil and shielding layer, its characterized in that: the hexagon receiving coil body include inner ring, outer loop and symmetric center point, hexagon receiving coil body inside be provided with symmetric center point, hexagon receiving coil body and symmetric center point between be provided with the inner ring, hexagon receiving coil body outside be provided with the outer loop, hexagon receiving coil body on be provided with the hexagon coil, the hexagon coil coiling fix on hexagon receiving coil body, the outer loop of hexagon coil and inner ring central line junction be provided with the fixed strip, the fixed strip pass through the glue adhesion on the hexagon coil, the hexagon coil on evenly be provided with a plurality of magnetic core, magnetic core top be provided with the shielding layer, the shielding layer arrange the magnetic core top in, hug closely the unmanned aerial vehicle chassis.
2. The hexagonal receiving coil for the wireless charging of the unmanned aerial vehicle as claimed in claim 1, wherein: the number of the fixing strips is 6, and the fixing strips are placed along the middle lines of the opposite sides of the hexagonal coils.
3. The hexagonal receiving coil for the wireless charging of the unmanned aerial vehicle as claimed in claim 1, wherein: the diameter of a wire adopted by the hexagonal coil is 4.6mm, the turn-to-turn distance between two adjacent turns is 0mm, the number of wound turns is 20 turns, the right angle line of the inner ring regular hexagon is 170mm, and the right angle line of the outer ring hexagon is 330 mm.
4. The hexagonal receiving coil for the wireless charging of the unmanned aerial vehicle as claimed in claim 1, wherein: the hexagonal coil is internally provided with a regular hexagon with the size equal to that of the inner ring, and the hexagonal coil is externally provided with a hexagon with the size equal to that of the outer ring and obtained after chamfering.
5. The hexagonal receiving coil for the wireless charging of the unmanned aerial vehicle as claimed in claim 1, wherein: the magnetic cores are made of ferrite materials and are cuboid, and the number of the magnetic cores is 12.
6. The hexagonal receiving coil for the wireless charging of the unmanned aerial vehicle as claimed in claim 1, wherein: the shielding layer is an aluminum plate shielding layer, and the thickness of the shielding layer is 0.56 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182561.9U CN211529758U (en) | 2019-12-09 | 2019-12-09 | A hexagon receiving coil for unmanned aerial vehicle is wireless to be charged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182561.9U CN211529758U (en) | 2019-12-09 | 2019-12-09 | A hexagon receiving coil for unmanned aerial vehicle is wireless to be charged |
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| Publication Number | Publication Date |
|---|---|
| CN211529758U true CN211529758U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182561.9U Expired - Fee Related CN211529758U (en) | 2019-12-09 | 2019-12-09 | A hexagon receiving coil for unmanned aerial vehicle is wireless to be charged |
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| CN (1) | CN211529758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060021A (en) * | 2021-03-11 | 2021-07-02 | 国网电力科学研究院武汉南瑞有限责任公司 | Unmanned aerial vehicle wireless charging platform transmitting and receiving coil equipment |
-
2019
- 2019-12-09 CN CN201922182561.9U patent/CN211529758U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060021A (en) * | 2021-03-11 | 2021-07-02 | 国网电力科学研究院武汉南瑞有限责任公司 | Unmanned aerial vehicle wireless charging platform transmitting and receiving coil equipment |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 Termination date: 20211209 |