CN217607565U - Radio transmission device - Google Patents
Radio transmission device Download PDFInfo
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- CN217607565U CN217607565U CN202220866964.4U CN202220866964U CN217607565U CN 217607565 U CN217607565 U CN 217607565U CN 202220866964 U CN202220866964 U CN 202220866964U CN 217607565 U CN217607565 U CN 217607565U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 61
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- 238000001514 detection method Methods 0.000 claims description 37
- 238000005516 engineering process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
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- 230000005674 electromagnetic induction Effects 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 3
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- 230000010365 information processing Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model relates to a radio transmission technical field particularly, relates to a radio transmission device. The radio transmission device comprises a transmitting device and a receiving device; the transmitting device comprises an input circuit, a transmitting capacitor and a magnetic resonance transmitting coil; the magnetic resonance transmitting coil is connected with a transmitting circuit, and a transmitting capacitor is connected with the magnetic resonance transmitting coil in series; the receiving device comprises a magnetic resonance receiving coil and a rectifying circuit, the magnetic resonance receiving coil is communicated with the rectifying circuit, the magnetic resonance receiving coil is used for receiving an alternating magnetic field generated by the magnetic resonance transmitting coil and generating magnetic resonance accumulated energy, the rectifying circuit is used for rectifying the magnetic resonance accumulated energy and then supplying the rectified energy to a load for use, and the magnetic resonance transmitting coil and the magnetic resonance receiving coil have the same resonance frequency; the transmitting coil is a planar winding annular structure. The utility model discloses can effectively improve radio device's transmission efficiency.
Description
Technical Field
The utility model relates to a radio transmission technical field particularly, relates to a radio transmission device.
Background
In recent years, wireless power transmission technology has been rapidly developed and increasingly applied to various electronic devices. As a technology for transmitting energy through an electromagnetic field or an electromagnetic wave, there are three types of mature technologies at present: first, electromagnetic induction technology; second, radio wave technology; and, third, magnetic resonance techniques. The principle of the electromagnetic induction technology is that a transmitting-end coil transmits electric energy by an alternating current of a certain frequency, and a receiving-end coil generates a current by the electric energy through electromagnetic induction, thereby transferring the electric energy from a transmitting end to a receiving end. The principle of the radio wave technology is that a transmitting end transmits microwave energy into the air, and a receiving end collects the microwave energy, thereby transferring electric energy from the transmitting end to the receiving end. The principle of the magnetic resonance technology is to make a transmitting end antenna and a receiving end antenna operating at the same frequency generate magnetic resonance at the specific frequency, so as to transfer electric energy from the transmitting end to the receiving end.
Among the three techniques, the electromagnetic induction technique, although it is highly efficient, requires the transmitting end coil and the receiving end coil to be accurately aligned, has a small working range, and is liable to generate eddy current heat from a foreign metal, thus posing a safety problem. In addition, although the radio wave technology has a long transmission distance and a large operable range, it has a very low efficiency and a small transmission power, and has a serious radiation problem. Compared with the two wireless power transmission technologies, the magnetic resonance technology is improved and balanced.
How to make the efficiency of magnetic resonance wireless transmission better is the subject of further research in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a radio transmission device, it can further improve magnetic resonance wireless transmission's efficiency.
The embodiment of the utility model is realized like this:
the utility model provides a radio transmission device, which comprises a transmitting device and a receiving device;
the transmitting device comprises an input circuit, a transmitting capacitor and a magnetic resonance transmitting coil;
the magnetic resonance transmitting coil is connected with the transmitting capacitor, and the transmitting capacitor is connected with the magnetic resonance transmitting coil in series;
the receiving device comprises a magnetic resonance receiving coil and a rectifying circuit, the magnetic resonance receiving coil is communicated with the rectifying circuit, the magnetic resonance receiving coil is used for receiving an alternating magnetic field generated by the magnetic resonance transmitting coil and generating magnetic resonance accumulated energy, the rectifying circuit is used for rectifying the magnetic resonance accumulated energy and then supplying the rectified energy to a load for use, and the magnetic resonance transmitting coil and the magnetic resonance receiving coil have the same resonance frequency;
the transmitting coil is of a planar winding annular structure.
Preferably, the magnetic resonance transmit coil and the magnetic resonance receive coil have the same diameter.
Preferably, the magnetic resonance transmitting coil includes a main transmitting coil and an auxiliary transmitting coil, the auxiliary transmitting coil and the main transmitting coil share one coil, and the auxiliary transmitting coil and the main transmitting coil are in a self-coupling and coil structure.
Preferably, the magnetic resonance transmitting coil further comprises a magnetic sheet and a magnetic column, the magnetic sheet is arranged at the bottom of the main transmitting coil, and the magnetic column is arranged at the center of the main transmitting coil.
Preferably, the magnetic resonance receiving coil comprises a main receiving coil and an auxiliary receiving coil, the main receiving coil and the auxiliary receiving coil share one coil, and the auxiliary receiving coil and the main receiving coil are in a self-coupling and coil structure.
Preferably, the receiving device further comprises a pulse power unit, and the pulse power unit is connected with the rectifying circuit.
Preferably, the number of the receiving devices is plural, and the plural receiving devices are arranged in series.
Preferably, the transmitting device is further connected with a foreign matter detection device for detecting foreign matters.
Preferably, the foreign object detection device comprises a control circuit, a power amplifier matching impedance network, a resonant network and a transmitting antenna which are connected in sequence;
the control circuit is connected with the input circuit.
Preferably, the foreign object detection device and the transmission device have different resonant frequencies.
The embodiment of the utility model provides a beneficial effect is:
through input circuit, transmitting capacitor and magnetic resonance transmitting coil, through with magnetic resonance receiving coil and rectifier circuit constitution receiving arrangement, and set up the transmitting coil as the annular structure of plane coiling, can effectively improve radio device's transmission efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a radio transmission device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second radio transmission device according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a usage state of a magnetic resonance transmitting coil in a second radio transmission apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a usage state of a magnetic resonance receiving coil in a second radio transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pulse power device of a wireless transmission device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a third structure of a radio transmission device according to an embodiment of the present invention.
An icon: 1-an input circuit; 2-a transmission capacitance; 3-a magnetic resonance transmit coil; 4-a magnetic resonance receive coil; 5, a rectification circuit; 6-a power coil; 7-a load coil; 8-high frequency high power supply; 9-a transmitting device; 10-a receiving device; 11-load.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The utility model provides a radio transmission device, as shown in fig. 1 and fig. 2, which comprises a transmitting device 9 and a receiving device 10; the transmitting device 9 comprises an input circuit 1, a transmitting capacitor 2 and a magnetic resonance transmitting coil 3; the magnetic resonance transmitting coil 3 is connected with the transmitting capacitor 2, and the transmitting capacitor 2 is connected with the magnetic resonance transmitting coil 3 in series; the receiving device 10 comprises a magnetic resonance receiving coil 4 and a rectifying circuit 5, the magnetic resonance receiving coil 4 is communicated with the rectifying circuit 5, the magnetic resonance receiving coil 4 is used for receiving the alternating magnetic field generated by the magnetic resonance transmitting coil 3 and generating magnetic resonance accumulated energy, the rectifying circuit 5 is used for supplying the magnetic resonance accumulated energy to a load 11 for use after rectification, and the magnetic resonance transmitting coil 3 and the magnetic resonance receiving coil 4 have the same resonance frequency; the transmitting coil 3 is a planar winding annular structure.
Preferably, the magnetic resonance transmit coil 3 and the magnetic resonance receive coil 4 have the same diameter.
Preferably, the magnetic resonance transmitting coil 3 includes a main transmitting coil and an auxiliary transmitting coil, the auxiliary transmitting coil and the main transmitting coil share one coil, and the auxiliary transmitting coil and the main transmitting coil are in a self-coupling and coil structure.
Preferably, the magnetic resonance transmitting coil 3 further comprises a magnetic sheet and a magnetic column, the magnetic sheet is arranged at the bottom of the main transmitting coil, and the magnetic column is arranged at the center of the main transmitting coil.
Preferably, the magnetic resonance receiving coil 4 includes a main receiving coil and an auxiliary receiving coil, the main receiving coil and the auxiliary receiving coil share one coil, and the auxiliary receiving coil and the main receiving coil are in a self-coupling and coil structure.
Preferably, the receiving device 10 further comprises a pulse power unit, and the pulse power unit is connected with the rectifying circuit 5.
Preferably, the number of the receiving devices 10 is plural, and the plural receiving devices 10 are arranged in series.
Fig. 5 is a schematic structural diagram of a repetition frequency pulse power device based on a magnetic resonance wireless power transmission device.
The system comprises a high-frequency high-power supply 8, a transmitting device 9, a plurality of receiving devices 10, a receiving power supply and a load 11. Specifically, the device further comprises a rectifying capacitor and a pulse power unit. The high-frequency high-power supply 8 is connected with the transmitting device 9, and the space between the transmitting device 9 and the receiving device 10 is magnetic isolation; the receiving device 10 is connected with the rectifying capacitor; the rectifying capacitor is connected with the pulse power unit; a plurality of pulse power units are connected in series; the two outermost pulse power units of the series-connected pulse power units are connected to the load 11.
Fig. 3 is a schematic diagram of the usage state of the magnetic resonance transmitting coil 3 of the repetition frequency pulse power device based on the magnetic resonance wireless power transmission of the present invention. The magnetic resonance transmitting coil 3 is magnetically and magnetically coupled with the power coil 6 in space.
Fig. 4 is a schematic diagram of a using state of the receiving device 10 of the repetition frequency pulse power device based on magnetic resonance wireless power transmission of the present invention. The magnetic resonance receiving coil 4 is magnetically coupled in space with the load coil 7.
When the utility model works, firstly, the high-frequency high-power supply 8 outputs high-frequency current to the power coil 6 of the transmitting device 9, and the power coil 6 of the transmitting device 9 transfers energy to the magnetic resonance transmitting coil 3 of the transmitting device 9 in space through magnetic induction coupling; electromagnetic wave energy emitted by the magnetic resonance transmitting coil 3 of the transmitting device 9 is coupled to the magnetic resonance receiving coil 4 of the receiving device 10 in space magnetic resonance, and energy of the magnetic resonance receiving coil 4 of the receiving device 10 is coupled to the load coil 7 of the receiving device 10 through space magnetic induction; the electric energy of the load coil 7 of the receiving device 10 is rectified into direct current to the rectifying capacitor; secondly, the direct current of the rectifying capacitor directly supplies power to each pulse power unit; the series connected pulse power cells form a high voltage output to the load 11.
The utility model discloses an adopt the mode of magnetic resonance coupling to transmit energy and keep apart each level pulse power unit, the design is unique, ingenious, simple structure.
In this embodiment, the pulse power unit is a fixed MAX pulse power.
Preferably, a foreign matter detection device is further connected to the emitting device 9 for detecting foreign matters.
Specifically, as shown in fig. 6, the foreign object detection apparatus includes a control circuit, a power amplifier matching impedance network, a resonant network, and a transmitting antenna, which are connected in sequence; the control circuit is connected with the input circuit 1.
Wherein the resonance frequency of the foreign object detection device is different from the resonance frequency of the emission device 9.
Specifically, in the present embodiment, the transmitting device 9 is configured to perform wireless power transmission according to the detection result of the foreign object detection device, so as to supply power to the load 11.
In the embodiment of the present invention, the emitting device 9 and the foreign object detecting device adopt different operating frequencies.
The two systems adopt different working frequencies, so that the two systems can work simultaneously, the real-time detection of foreign matters and the timely protection of the transmitting capacitor 2 are realized, and the two systems adopt different working frequencies, so that the interference of the two systems to each other is very small, and the normal work of each other cannot be influenced.
In the embodiment of the present invention, the control circuit is used for detecting whether the transmitting device 9 has a foreign object; the power amplifier is used for amplifying the power of the radio energy and converting the energy into radio frequency energy; the matching impedance network is used for performing impedance transformation and matching the output impedance of the power amplifier to the input impedance of the transmitting resonant network; the transmitting resonant network and the transmitting antenna form an LC series-parallel resonant circuit and are used for adjusting the working frequency of the foreign matter detection device;
the transmitting antenna is used for transmitting radio frequency energy to a space where the transmitting antenna is located.
The energy is converted into radio frequency energy from DC through a transmitting power amplifier, impedance matching is carried out through a second matching impedance network, the radio frequency energy is transmitted to a transmitting resonant network and a transmitting antenna to be transmitted to a space near the transmitting antenna, parameters such as impedance, current and the like of the system can be greatly changed when foreign matters exist in an electromagnetic field space transmitted by the transmitting antenna, parameter circuits such as impedance Zin, input current detection and the like in the foreign matter detection device transmit collected values back to a control circuit to judge whether foreign matters exist in the system, and the control circuit controls the on-off of the transmitting device 9 according to the judged result. The power amplifier is used for amplifying a small signal into a high-power signal, the impedance matching network is used for matching the output impedance of the power amplifier to the input impedance of the transmitting resonant network, and the transmitting resonant network and the transmitting coil form an LC series-parallel resonant circuit.
The embodiment of the utility model provides an in, whether the concrete method that control circuit detected to have the foreign matter does: judging whether the return loss, impedance Zin and the parameter change value of the input current of the foreign matter detection device exceed a set threshold value by using a control circuit, if so, judging that foreign matters exist in the transmitting device 9, and disconnecting the power supply of the transmitting device 9 by using the input circuit 1; otherwise, no foreign matter exists in the transmitting device 9, and the input circuit 1 is used for starting the transmitting device 9 to work.
When foreign matters exist in the electromagnetic field space emitted by the transmitting antenna, parameters such as impedance Zin, input current and the like of the foreign matter detection device can be caused to change violently, each parameter detection circuit in the foreign matter detection device transmits the value back to the control circuit to judge whether foreign matters exist in the system, and the control circuit controls the on-off of the transmitting device 9 according to the judged result.
The input circuit 1 and the control circuit are not limited to two separate circuits, i.e., the control transmitting means 9 and the foreign object detecting means may share the same control circuit or two circuits that can communicate bidirectionally; the emitting device 9 and the foreign matter detection device share the control circuit, so that time delay of information processing and information transmission can be reduced, the emitting capacitor 2 of the emitting device 9 can be protected at the first time when the foreign matter is detected, and the purpose of foreign matter detection is better achieved.
In the embodiment of the present invention, as shown in fig. 2, the work flow of the present invention is as follows: when the whole circuit is powered on, the foreign matter detection device starts to work, when the value acquired by the circuit of the foreign matter detection device exceeds the range of a preset value, the foreign matter detection device judges that foreign matter exists in the system, the input circuit 1 does not start the power supply of the transmitting device 9, the foreign matter detection device continues to detect until the system judges that foreign matter does not exist, if the system judges that foreign matter does not exist, the control circuit starts the power supply of the transmitting device 9, the transmitting device 9 starts to work normally, the foreign matter detection device also works, if the foreign matter detection device judges that foreign matter exists, the transmitting device 9 is powered off and returns to the initial state, otherwise, the transmitting device 9 enters a scanning state, if the foreign matter detection device judges that foreign matter exists, the transmitting device 9 is powered off and returns to the initial state, otherwise, the wireless power transmission system enters a normal working state, if the foreign matter detection device judges that foreign matter exists, the transmitting device 9 is powered off and returns to the initial state, otherwise, the foreign matter detection device detects whether foreign matter exists.
The foreign matter detection device works prior to the transmitting device 9, when the control circuit judges that no foreign matter exists in the foreign matter detection device, the transmitting device 9 starts to work, the foreign matter detection device can detect the foreign matter in three states of non-working state, low-power scanning state and normal charging state of the transmitting device 9, namely, the foreign matter detection device starts to work when the whole system starts to be powered on until the power supply of the whole system is disconnected.
The structure and the size of the transmitting antenna used for the foreign matter detection device in the embodiment are not fixed, but the parameters such as impedance Zin, input current and the like in a circuit can be greatly changed no matter the foreign matter is at any position in the transmitting antenna when the foreign matter exists in the system all the time, and the changed quantities caused by the foreign matter at any position in the transmitting antenna are close to each other.
The utility model discloses a theory of operation and process do: the utility model needs to monitor whether foreign matters exist in the wireless charging system in real time, and based on two systems with different working frequencies, the two systems work simultaneously; the two systems have different functions, one for wireless power transmission and the other for foreign object detection.
The utility model provides an emitter 9 and foreign matter detection device share same control circuit or use two control system that can two-way communication, are favorable to reducing information processing and information transmission's time delay, can protect wireless power transmission system's transmission electric capacity 2 the very first time when detecting the foreign matter, reach the purpose that the foreign matter detected better.
The utility model discloses an emitter 9 and foreign matter detection device adopt different operating frequency respectively, therefore two systems can the simultaneous working, accomplish the real-time detection to the foreign matter and to the timely protection of transmission electric capacity 2, and two systems are very little to interference each other, can not influence normal work each other.
The utility model discloses a constitute transmitting device 9 with input circuit 1, transmission electric capacity 2 and magnetic resonance transmitting coil 3, through constituting receiving device 10 with magnetic resonance receiving coil 4 and rectifier circuit 5, and set up the transmitting coil as the annular structure of plane coiling, can effectively improve radio device's transmission efficiency.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A radio transmission apparatus, comprising a transmitting apparatus and a receiving apparatus;
the transmitting device comprises an input circuit, a transmitting capacitor and a magnetic resonance transmitting coil;
the magnetic resonance transmitting coil is connected with the transmitting capacitor, and the transmitting capacitor is connected with the magnetic resonance transmitting coil in series;
the receiving device comprises a magnetic resonance receiving coil and a rectifying circuit, the magnetic resonance receiving coil is communicated with the rectifying circuit, the magnetic resonance receiving coil is used for receiving an alternating magnetic field generated by the magnetic resonance transmitting coil and generating magnetic resonance accumulated energy, the rectifying circuit is used for rectifying the magnetic resonance accumulated energy and then supplying the rectified energy to a load for use, and the magnetic resonance transmitting coil and the magnetic resonance receiving coil have the same resonance frequency;
the transmitting coil is of a planar winding annular structure.
2. The radio transmission apparatus according to claim 1, wherein the magnetic resonance transmit coil and the magnetic resonance receive coil have the same diameter.
3. The radio transmission apparatus according to claim 1, wherein the magnetic resonance transmission coil includes a main transmission coil and an auxiliary transmission coil, the auxiliary transmission coil shares one coil with the main transmission coil, and the auxiliary transmission coil and the main transmission coil are in a self-coupled and coil structure.
4. The radio transmission device according to claim 3, wherein the magnetic resonance transmission coil further includes a magnetic sheet and a magnetic pillar, the magnetic sheet being disposed at a bottom of the main transmission coil, the magnetic pillar being disposed at a center of the main transmission coil.
5. The radio transmission apparatus according to claim 3, wherein the magnetic resonance receive coil includes a primary receive coil and an auxiliary receive coil, the primary receive coil and the auxiliary receive coil share one coil, and the auxiliary receive coil and the primary receive coil are in a self-coupled and coil configuration.
6. The radio transmission apparatus according to claim 1, wherein the reception apparatus further comprises a pulse power unit, and the pulse power unit is connected to the rectifier circuit.
7. The radio transmission apparatus according to claim 6, wherein the number of the reception apparatuses is plural, and plural reception apparatuses are arranged in series.
8. The radio transmission apparatus according to claim 1, wherein a foreign object detection means is further connected to the transmitting means for detecting a foreign object.
9. The radio transmission apparatus according to claim 8, wherein the foreign object detection means includes a control circuit, a power amplifier matching impedance network, a resonance network, and a transmission antenna connected in this order;
the control circuit is connected with the input circuit.
10. The radio transmission apparatus according to claim 8, wherein the foreign object detection means and the transmission means have different resonance frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220866964.4U CN217607565U (en) | 2022-04-14 | 2022-04-14 | Radio transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220866964.4U CN217607565U (en) | 2022-04-14 | 2022-04-14 | Radio transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217607565U true CN217607565U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220866964.4U Expired - Fee Related CN217607565U (en) | 2022-04-14 | 2022-04-14 | Radio transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217607565U (en) |
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2022
- 2022-04-14 CN CN202220866964.4U patent/CN217607565U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |