CN204497855U - Current-collecting device and power transmission device - Google Patents
Current-collecting device and power transmission device Download PDFInfo
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- CN204497855U CN204497855U CN201390000686.3U CN201390000686U CN204497855U CN 204497855 U CN204497855 U CN 204497855U CN 201390000686 U CN201390000686 U CN 201390000686U CN 204497855 U CN204497855 U CN 204497855U
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- power transmission
- current
- transformer
- collecting device
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 58
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000009499 grossing Methods 0.000 abstract description 9
- 238000004804 winding Methods 0.000 description 19
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model proposes a kind of current-collecting device and power transmission device.In this current-collecting device, active electrode (E3) and Passive electrode (E4) are applied to the high frequency voltage of the 200kHz transmitted from power transmission device (10).A step-down transformer (24) has the characteristic of the nearby resonance at 200kHz, makes the high frequency voltage step-down applied active electrode (E3) and Passive electrode (E4).Secondary step-down transformer (26) makes by a step-down transformer (24) by the further step-down of the high frequency voltage of step-down.Rectifier smoothing circuit (28) is to level and smooth based on being carried out rectification by secondary step-down transformer (26) by the electric current of the high frequency voltage of step-down.The output of rectifier smoothing circuit (28) is supplied to load (22) via output terminal Vout.According to the utility model, can obtain high by electrical efficiency.In addition, due to the alternating voltage that transmits from power transmission device by the 1st pressure unit and the 2nd pressure unit by periodically step-down.The specification of each step-down means can be relaxed thus, the low level of each step-down means can be sought.
Description
Technical field
The utility model relates to current-collecting device, particularly has the current-collecting device of the function of powered alternating voltage step-down.
The utility model also relates to power transmission device, particularly has the power transmission device of the function of being boosted by the alternating voltage of power transmission.
Background technology
The Wireless power transmission system of existing field coupled mode is disclosed in patent documentation 1.Within the system, the high frequency voltage generative circuit being arranged on power transmission device generates the high frequency voltage of such as 100kHz ~ number 10MHz.The booster circuit that high frequency voltage is being formed by step-up transformer and inductor generated is boosted.The Passive electrode of power transmission device and active electrode and be arranged on Passive electrode and the active electrode field coupled of current-collecting device, the high frequency voltage of boosting is transferred to current-collecting device via these electrodes.The reduction voltage circuit formed by step-down transformer and inductor is set at current-collecting device.By the high frequency voltage that field coupled is transmitted, after being fallen by this reduction voltage circuit, be supplied to secondary cell through over commutation smoothing circuit.
Look-ahead technique document
Patent documentation
Patent documentation 1:JP JP 2012-29548 publication
The summary of utility model
The problem that utility model will solve
But if the specification of strict regulations step-up transformer and step-down transformer (particularly, proof voltage, inductance value, Q value), then the low level of these transformers even miniaturization of system module become difficulty.As a result, be difficult to system to be built in the such mobile device of the strict portable telephone of small form factor requirements, smart mobile phone.In addition, especially in the transformer using winding, to also utilize step-up transformer and step-down transformer at humorous center of percussion, be then difficult to select the situation drawing the transformer obtaining the specification (proof voltage, Q value, size, cost etc.) meeting all needs.
Utility model content
For this reason, main purpose of the present utility model is to provide remarkable by electrical efficiency and can be miniaturized current-collecting device.
Other object of the present utility model is to provide power transmission efficiency remarkable and the power transmission device that energy is miniaturized.
For solving the means of problem
Follow current-collecting device of the present utility model (20: reference number suitable in embodiment, identical below) to possess: powered electrode (E3, E4), it is applied in the alternating voltage of the set frequency transmitted from power transmission device (10); 1st pressure unit, it has the characteristic of the nearby resonance in set frequency, makes the alternating voltage step-down (24,30,32) applied powered electrode; 2nd pressure unit, it makes by the alternating voltage step-down of the 1st pressure unit step-down (26,30,40); Rectification smooth unit (28), it is level and smooth that it carries out rectification to the electric current based on the alternating voltage by the 2nd pressure unit step-down; And providing unit, its output by rectification smooth unit (Vout) is supplied to load (22).
Preferably, power transmission device possesses the power transmission electrode (E1, E2) being applied in alternating voltage, and powered electrode is equivalent to the electrode be coupled with power transmission Electrode Field.
Preferably, the 1st pressure unit comprises the 1st piezoelectric transformer (30).
Preferably, the 1st pressure unit comprises the multiple inductors (L3, L4) be mutually connected in series and the capacitor (C2) be connected in parallel with a part for multiple inductor.
Preferably, the 2nd pressure unit comprises the 2nd piezoelectric transformer (40).
Follow power transmission device of the present utility model (10) to possess: generation unit (12), it generates the alternating voltage of set frequency; 1st boosting unit (14), it makes the alternating voltage boosting generated from generation unit; 2nd boosting unit (16), it has the characteristic of the nearby resonance in set frequency, and the alternating voltage boosted by the 1st boosting unit is boosted; With power transmission electrode (E1, E2), it is applied in the alternating voltage boosted by the 2nd boosting unit.
The effect of utility model
According to the utility model, represent set frequency from the alternating voltage of power transmission device transmission, owing to the 1st pressure unit of the alternating voltage applied powered electrode step-down to be had the characteristic of the nearby resonance in set frequency, because physical efficiency obtains high by electrical efficiency.In addition, due to the alternating voltage that transmits from power transmission device by the 1st pressure unit and the 2nd pressure unit by periodically step-down.The specification of each step-down means can be relaxed thus, the low level of each step-down means can be sought.
Particularly, because the output voltage of the 1st pressure unit can be higher, therefore can suppress the output current of the 1st pressure unit, the low level of the 1st pressure unit can be sought thus.In addition, due to the withstand voltage properties not needing requirement high in the 2nd pressure unit, the low level of the 2nd pressure unit therefore can be sought thus.The result of the low level of each step-down means, achieves the miniaturization of current-collecting device.
According to the utility model, the alternating voltage generated from AC power represents set frequency, owing to exporting the characteristic the 2nd boosting unit of the alternating voltage that power transmission electrode applies to the nearby resonance in set frequency, therefore can obtain high power transmission efficiency.In addition, the alternating voltage generated from AC power is periodically boosted by the 1st boosting unit and the 2nd boosting unit.The specification of each boosting unit can be relaxed thus, the low level of each boosting unit can be sought.
Particularly, at the withstand voltage properties that the 1st boosting unit does not need requirement high, the low level of the 1st boosting unit can be sought thus.In addition, because the input voltage of the 2nd boosting unit is higher, therefore can suppress the input current of the 2nd boosting unit, the low level of the 2nd boosting unit can be sought thus.The result of the low level of each boosting unit, achieves the miniaturization of current-collecting device.
Above-mentioned object of the present utility model, other object, feature and advantage can become more clear from the detailed description of the following embodiment of carrying out with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the block diagram of an example of the formation representing electrical power transmission system.
Fig. 2 is the block diagram of other example of the formation representing electrical power transmission system.
Fig. 3 is the block diagram of formation other example again representing electrical power transmission system.
Fig. 4 is the block diagram of formation another example again representing electrical power transmission system.
Fig. 5 is the block diagram of other example of the formation representing electrical power transmission system.
Embodiment
With reference to figure 1, the electrical power transmission system of the present embodiment possesses power transmission device 10 and current-collecting device 20.Power transmission device 10 is formed by the active electrode E1 of high frequency voltage generative circuit 12 and step-up transformer 14 and field coupled and Passive electrode E2.In addition, current-collecting device 20 is formed by field coupled d active electrode E3 and Passive electrode E4, step-down transformer 24, secondary step-down transformer 26 and a rectifier smoothing circuit 28.
In power transmission device 10, high frequency voltage generative circuit 12 generates the high frequency voltage (alternating voltage) of 200kHz.One side's output of high frequency voltage generative circuit 12 and the opposing party's output are connected with one end of primary winding L1 and the other end of forming step-up transformer 14 respectively.The secondary coil L2 forming step-up transformer 14 has the winding number of the winding number being greater than primary winding L1.One end of secondary coil L2 is connected with active electrode E1, and the other end of secondary coil L2 is connected with Passive electrode E2.
In current-collecting device 20, step-down transformer 24 has the coil L3 that one end is connected with active electrode E3.The other end of coil L3 is connected with one end of coil L4, and the other end of coil L4 is connected with Passive electrode E4.Capacitor C2 and coil L4 is connected in parallel, and forms resonant circuit together with coil L3 and L4.
At this, the winding number of coil L3 and winding diameter are adjusted to respectively " 500 " and " 0.1mm ", the winding number of coil L4 and winding diameter are adjusted to respectively " 50 " and " 0.2mm ".Further, being 15mm × 6mm × 5mm (being highly 5mm) by the adjusted size of coil L3, is 10mm × 10mm × 5mm (being highly 5mm) by the adjusted size of coil L4.In addition, the electric capacity of adjustment capacitor C2, makes the resonance frequency of described resonant circuit represent frequency near 200kHz.
Secondary step-down transformer 26 is formed by primary winding L5 and secondary coil L6.Primary winding L5 and secondary coil L6 is formed by the pattern on substrate.The winding number of primary winding L5 and pattern width are adjusted to respectively " 25 " and " 0.5mm ", the winding number of secondary coil L6 and pattern width are adjusted to respectively " 5 " and " 1.0mm ".And then, be 20mm × 20mm × 5mm (being highly 5mm) by the adjusted size of secondary step-down transformer 26.
One end of primary winding L5 is connected with one end of coil L4, and the other end of primary winding L5 is connected with the other end of coil L4.One end of secondary coil L6 is connected with the anode of diode D1 and the negative electrode of diode D3 forming rectifier smoothing circuit 28.In addition, the other end of secondary coil L6 is connected with the anode of diode D2 and the negative electrode of diode D4 forming rectifier smoothing circuit 28.
In rectifier smoothing circuit 28, the negative electrode of diode D1 and D2 is connected with one end of capacitor C1, and the anode of diode D3 and D4 is connected with the other end of capacitor C1.The load 22 of secondary cell etc. is set in parallel with capacitor C1.
Therefore, the high frequency voltage generated from high frequency voltage generative circuit 12 boosts after-applied to active electrode E1 and Passive electrode E2 at boosted transformer 14.By field coupled, excite by the high frequency voltage based on the high frequency voltage so applied at the active electrode E3 of current-collecting device 20 and Passive electrode E4.
The high frequency voltage excited by a step-down transformer 24 and secondary step-down transformer 26 by periodically step-down.The high frequency voltage of step-down by diode D1 ~ D4 by full-wave rectification, the voltage of rectification by capacitor C1 by smoothly.Via output terminal Vout, load 22 is provided to the electric current of the direct voltage based on so generation.
The high frequency voltage transmitted from power transmission device 10 as known from above explanation represents the frequency of 200kHz, and a step-down transformer 24, owing to having the characteristic of the nearby resonance at 200kHz, therefore can obtain high by electrical efficiency.In addition, the high frequency voltage transmitted from power transmission device 10 by a step-down transformer 24 and secondary step-down transformer 26 by periodically step-down.A step-down transformer 24 and the respective specification (proof voltage, inductance value, Q value) of secondary step-down transformer 26 can be relaxed thus, the low level of a step-down transformer 24 and secondary step-down transformer 26 can be realized.
Particularly, because the output voltage of a step-down transformer 24 can be higher compared with the situation with single transformer pressure-reducing, therefore can suppress the output current of a step-down transformer 24, the low level of a step-down transformer 24 can be sought thus.In addition, due to the withstand voltage properties not needing requirement high at secondary step-down transformer 26, and then need not be mode of resonance, therefore can realize the low level of secondary step-down transformer 26.So make the result of a step-down transformer 24 and secondary step-down transformer 26 low level, achieve the miniaturization of current-collecting device 20.In addition, mode of resonance owing to not needing secondary step-down transformer, therefore using the transformer that coupling is strong, leakage inductance is little, when changing the condition in resonant circuit portion not significantly, easily coordinating load specification to select the step-down transformer being most suitable for system.
With reference to figure 2, because the electrical power transmission system of other embodiment is except step-down transformer 24 this point of replacing current-collecting device 20 with veneer piezoelectric transformer 30, all the other are all identical with the electrical power transmission system shown in Fig. 1, therefore omit illustrating for the part repeated as far as possible.
Veneer piezoelectric transformer 30 has single electrode E5 at secondary side, has 2 electrode E6 and E7 at primary side.In the present embodiment, owing to using veneer piezoelectric transformer 30 in order to step-down, therefore the electrode E5 of secondary side is connected with active electrode E3, and electrode E6 and E7 of primary side is connected with one end of the primary winding L5 of formation secondary step-down transformer 26 and the other end.Electrode E7 is also connected with Passive electrode E4.
In addition, the resonance frequency of veneer piezoelectric transformer 30 is set near 200kHz.And then, be 10mm × 25mm × 3mm (being highly 3mm) by the adjusted size of veneer piezoelectric transformer 30.In addition, highly will allow and can transmit the electric power of 10W degree by the veneer piezoelectric transformer 30 of 3mm degree.
In veneer piezoelectric transformer 30, owing to being difficult to guarantee larger by step-down ratio, therefore veneer piezoelectric transformer 30 rests on the level high frequency voltage transmitted from power transmission device 10 being depressured to 1/2 ~ 1/5 degree.But, the proof voltage of secondary step-down transformer 26 can be made lower by arranging veneer piezoelectric transformer 30, the low level of secondary step-down transformer 26 can be realized.The size of veneer piezoelectric transformer 30, due to as described above, therefore achieves the miniaturization of current-collecting device 20 in the same manner as Fig. 1 embodiment.
With reference to figure 3, due to the electrical power transmission system of other embodiment again, except by the veneer piezoelectric transformer 30 shown in Fig. 2 with except reduction voltage circuit 32 this point had with the element of its equivalence, all the other are all identical with the electrical power transmission system shown in Fig. 2, therefore for repeat part omit the description as far as possible.
Reduction voltage circuit 32 has capacitor C3, and this capacitor C3 has the one end be connected with active electrode E3 and the other end be connected with Passive electrode E4.One end of capacitor C3 is connected with one end of capacitor C4, and the other end of capacitor C4 is connected with one end of capacitor C5 via coil L7.The other end of capacitor C5 is connected with the other end of capacitor C3.The primary winding L5 and the capacitor C5 that form secondary step-down transformer 26 are connected in parallel.
By the electric capacity of adjustment capacitor C3 ~ C5 and the inductance of coil L7, the resonance frequency of reduction voltage circuit 32 is adjusted near 200kHz.In addition, the high frequency voltage transmitted from power transmission circuit 10 is by coil L7 and by step-down.In the present embodiment, also same with Fig. 1 embodiment, achieve the miniaturization of current-collecting device 20.
With reference to figure 4, because the electrical power transmission system of another other embodiment is again except replacing except this point by the above-mentioned veneer piezoelectric transformer 40 of the secondary step-down transformer 26 of current-collecting device 20, all the other are all identical with the electrical power transmission system shown in Fig. 1, therefore omit illustrating for the part repeated as far as possible.
Veneer piezoelectric transformer 40 has single electrode E5 at secondary side, has 2 electrode E6 and E7 at primary side.Owing to also using veneer piezoelectric transformer 40 in order to step-down in the present embodiment, therefore the electrode E5 of secondary side is connected with one end of capacitor C2, the electrode E6 of primary side is connected with the negative electrode of the anode of diode D1 and diode D3, and the electrode E7 of primary side is connected with the negative electrode of the anode of diode D2 and diode D4.
In addition, in the present embodiment, do not need the resonance frequency of veneer piezoelectric transformer 40 to be set near 200kHz.In addition, between electrode E6 and E7 of primary side, add the inductor L8 for obtaining impedance matching between veneer piezoelectric transformer 40 and rectifier smoothing circuit 28.
In the present embodiment, same as described above, the low level of a step-down transformer 24 and veneer piezoelectric transformer 40 can be realized, realize the miniaturization of current-collecting device 20.
With reference to figure 5, the electrical power transmission system of other embodiment is except adding secondary booster transformer 16, saving from current-collecting device 20 except step-down transformer 24 this point at power transmission device 10, all the other are all identical with the electrical power transmission system shown in Fig. 1, therefore omit illustrating for the part repeated as far as possible.
In power transmission circuit 10, secondary booster transformer 16 has capacitor C6.One end of capacitor C6 and the other end are connected with one end of the secondary coil L2 of a formation step-up transformer 14 and the other end respectively.One end of coil L9 and the other end are connected with one end of capacitor C6 and the other end respectively.One end of coil L10 is connected with one end of coil L9, and the other end of coil L10 is connected with active electrode E1.Passive electrode E2 is connected with the other end of coil L9.
Capacitor C6 forms resonant circuit together with coil L9 and L10.In addition, the electric capacity of adjustment capacitor C6, makes resonance frequency represent frequency near 200kHz.
On the other hand, in parasite power supplier 20, the one end and the other end that form the primary winding L5 of step-down transformer 26 are connected with active electrode E3 and Passive electrode E4.
In this embodiment, also represent the frequency of 200kHz from the high frequency voltage of high frequency voltage generative circuit 12 output, because secondary booster transformer 16 has the characteristic of the nearby resonance at 200kHz, therefore can obtain high power transmission efficiency.In addition, high frequency voltage is periodically boosted by a step-up transformer 14 and secondary booster transformer 16.The specification of a step-up transformer 14 and secondary booster transformer 16 can be relaxed thus, the low level of a step-up transformer 14 and secondary booster transformer 16 can be sought.
Particularly, due to the withstand voltage properties not needing requirement high at step-up transformer 14, and then also need not be mode of resonance, therefore can seek the low level of a step-up transformer 14.In addition, because the input voltage of secondary booster transformer 16 is higher, therefore can suppress the input current of secondary booster transformer 16, the low level of secondary booster transformer 16 can be sought thus.The result of the low level of a step-up transformer 14 and secondary booster transformer 16, achieves the miniaturization of power transmission device 10.In addition, owing to not needing a step-up transformer to be mode of resonance, therefore using the transformer that coupling is strong, leakage inductance is little, when changing the condition in resonant circuit portion not significantly, easily coordinating the specification of power supply to select the step-up transformer of the system that is most suitable for.
In addition, in these embodiments, only the transformer of any one party of power transmission device 10 and current-collecting device 20 is set to secondary and forms, but also the transformer of power transmission device 10 and current-collecting device 20 liang of sides can be set to secondary and form.
The explanation of label
10 power transmission devices
14 step-up transformers
16 secondary booster transformers
20 current-collecting devices
24, No. 32 step-down transformers
No. 26 2 step-down transformers
28 rectifier smoothing circuits
30 veneer piezoelectric transformers.
Claims (8)
1. a current-collecting device, possesses:
Powered electrode, it is applied in the alternating voltage of the set frequency transmitted by field coupled from power transmission device;
1st pressure unit, it has the characteristic of the nearby resonance in described set frequency, makes the alternating voltage step-down applied described powered electrode;
2nd pressure unit, it makes the alternating voltage step-down by described 1st pressure unit step-down;
Rectification smooth unit, it is level and smooth that it carries out rectification to the electric current based on the alternating voltage by described 2nd pressure unit step-down; With
Load, it is provided the output of described rectification smooth unit.
2. current-collecting device according to claim 1, wherein,
Described power transmission device possesses: the power transmission electrode being applied in described alternating voltage,
Described powered electrode is equivalent to the electrode be coupled with described power transmission Electrode Field.
3. current-collecting device according to claim 1 and 2, wherein,
Described 1st pressure unit comprises the 1st piezoelectric transformer.
4. current-collecting device according to claim 1 and 2, wherein,
Described 1st pressure unit comprises: the multiple inductor be mutually connected in series and the capacitor be connected in parallel with a part for described multiple inductor.
5. current-collecting device according to claim 1 and 2, wherein,
Described 2nd pressure unit comprises the 2nd piezoelectric transformer.
6. current-collecting device according to claim 3, wherein,
Described 2nd pressure unit comprises the 2nd piezoelectric transformer.
7. current-collecting device according to claim 4, wherein,
Described 2nd pressure unit comprises the 2nd piezoelectric transformer.
8. a power transmission device, possesses:
Generation unit, it generates the alternating voltage of set frequency;
1st boosting unit, it makes the alternating voltage boosting generated from described generation unit;
2nd boosting unit, it has the characteristic of the nearby resonance in described set frequency, and the alternating voltage boosted by described 1st boosting unit is boosted; With
Power transmission electrode, it is applied in the alternating voltage boosted by described 2nd boosting unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-014878 | 2013-01-29 | ||
| JP2013014878 | 2013-01-29 | ||
| PCT/JP2013/078380 WO2014119059A1 (en) | 2013-01-29 | 2013-10-18 | Power-reception device and power-transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497855U true CN204497855U (en) | 2015-07-22 |
Family
ID=51261795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201390000686.3U Expired - Lifetime CN204497855U (en) | 2013-01-29 | 2013-10-18 | Current-collecting device and power transmission device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2014119059A1 (en) |
| CN (1) | CN204497855U (en) |
| WO (1) | WO2014119059A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0934571A (en) * | 1995-07-24 | 1997-02-07 | Toyo Electric Mfg Co Ltd | Stationary power conversion device |
| JP2000270543A (en) * | 1999-03-19 | 2000-09-29 | Toko Inc | Inverter circuit using a piezoelectric transformer |
| JP2007028812A (en) * | 2005-07-19 | 2007-02-01 | Nissan Motor Co Ltd | Power supply unit |
| WO2012157012A1 (en) * | 2011-05-13 | 2012-11-22 | Murata Manufacturing Co., Ltd. | Power transmitting device, power receiving device, and power transmission system |
-
2013
- 2013-10-18 WO PCT/JP2013/078380 patent/WO2014119059A1/en active Application Filing
- 2013-10-18 CN CN201390000686.3U patent/CN204497855U/en not_active Expired - Lifetime
- 2013-10-18 JP JP2014559493A patent/JPWO2014119059A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2014119059A1 (en) | 2017-01-26 |
| WO2014119059A1 (en) | 2014-08-07 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150722 |