CN107069912A - A kind of USB interface-based adaptive quick-charging circuit - Google Patents
A kind of USB interface-based adaptive quick-charging circuit Download PDFInfo
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- CN107069912A CN107069912A CN201710263747.XA CN201710263747A CN107069912A CN 107069912 A CN107069912 A CN 107069912A CN 201710263747 A CN201710263747 A CN 201710263747A CN 107069912 A CN107069912 A CN 107069912A
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 22
- 230000001360 synchronised effect Effects 0.000 claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000004146 energy storage Methods 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 2
- 206010064063 CHARGE syndrome Diseases 0.000 claims 1
- 102100038215 Chromodomain-helicase-DNA-binding protein 7 Human genes 0.000 claims 1
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- 238000000034 method Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The USB interface-based adaptive quick-charging circuit of quick charge is realized the invention discloses a kind of method using communication, including rectification input circuit, input filter circuit, Switching Power Supply control chip, transformer, rectifying output circuit, output filter circuit, feedback circuit, synchronous voltage control circuit, and fast charge protocol control circuit, the power output end of rectifying output circuit is connected with the power input of synchronous voltage control circuit, the charging output end of synchronous voltage control circuit controls the power end of circuit with fast charge protocol, the feedback output end of fast charge protocol control circuit is connected with the feedback end of the synchronous voltage control circuit；The drain electrode of Switching Power Supply control chip is connected by reversed peak protection circuit with the power output end of rectification input circuit, and the start end of Switching Power Supply control chip is connected to the power output end of rectification input circuit by start-up circuit.The quick-charging circuit can be widely used in USB interface intelligent terminal.
Description
Technical field
The present invention relates to a kind of adaptive charging circuit, more particularly to one kind are USB interface-based adaptive quick
Charging circuit.
Background technology
It is well known that the power consumption of smart electronicses product is all very severe, by taking smart mobile phone as an example, often full of once electric, lead to
It can only be used two days or so in the case of often, what is had daily will even charge.And the mark of the battery in traditional intelligence electronic product
Voltage is claimed all to be not quite similar, thus each smart electronicses product is equipped with a special charger, so allows for every family
Each household has unnumbered charger, because these chargers are not again general, using being inconvenient, is brought to user endless
It is worried；Meanwhile, it also result in the waste of a large amount of social resources.
The content of the invention
The technical problems to be solved by the invention are：There is provided it is a kind of using communicate method come realize quick charge based on
The adaptive quick-charging circuit of USB interface.
In order to solve the above technical problems, the technical solution adopted in the present invention is：It is a kind of USB interface-based adaptive fast
Fast charging circuit, including：Rectification input circuit, input filter circuit, Switching Power Supply control chip, transformer, rectification output electricity
Road, output filter circuit and feedback circuit, synchronous voltage control circuit and fast charge protocol control circuit, the rectification output
The power output end of circuit is connected with the power input of synchronous voltage control circuit, the charging output of synchronous voltage control circuit
Hold and control the power end of circuit, the power end of USB interface to be connected with the fast charge protocol, fast charge protocol control circuit
Feedback output end and synchronous voltage control circuit feedback end be connected, a pair of the signal ends and fast charge protocol of USB interface
The respective end of circuit fast charge protocol control circuit is controlled to be connected；Described transformer include one group of primary coil, one group
Secondary coil and one group of feedback coil, described feedback circuit include：Optocoupler, one way conducting device and reference voltage circuit,
The anode of optocoupler is connected by a benchmark current-limiting resistance with the power output end of the rectifying output circuit, the negative electrode of optocoupler with
The output end of reference voltage circuit is connected, and the colelctor electrode of optocoupler is connected with the negative pole of one way conducting device, one way conducting device
Positive pole is connected with the respective end of feedback coil, and the other end ground connection of feedback coil, emitter stage and the Switching Power Supply of optocoupler control electricity
The control end on road is connected, and the drain electrode of Switching Power Supply control chip passes through reversed peak protection circuit and the power supply of rectification input circuit
Output end is connected, and the source ground of Switching Power Supply control chip, the start end of Switching Power Supply control chip is connected by start-up circuit
To the power output end of rectification input circuit；Described reversed peak protection circuit includes：Reversed peak protective resistance, reverse peak
Value protection electric capacity and reversed peak protection diode, it is corresponding after reversed peak protective resistance is in parallel with reversed peak protection electric capacity
One end is connected to the power output end of input rectification circuit, and the other end is connected with the negative pole of the reversed peak protection diode, instead
It is connected to the positive pole of peak value protection diode with the drain electrode of Switching Power Supply control chip.
As a kind of preferred scheme, in described USB interface-based adaptive quick-charging circuit, described is quick
Charge protocol control circuit includes：Fast charge protocol control chip and its peripheral circuit, fast charge protocol control chip
Control end is connected with power end, and the peripheral circuit of fast charge protocol control chip includes：String is located at fast charge protocol control
Filling control current-limiting resistance soon, the upper divider resistance of control filled soon and control is filled soon between the power end and USB interface power end of chip
The lower divider resistance of system, fills control one end of upper divider resistance after one end of the lower divider resistance of control is connected and quick with filling soon soon
The feedback output end of charge protocol control chip is connected, and the other end of the upper divider resistance of control and the power end of USB interface are filled soon
It is connected, the other end ground connection of the lower divider resistance of control is filled soon.
It is used as a kind of preferred scheme, in described USB interface-based adaptive quick-charging circuit, described synchronization
Voltage control circuit includes：Synchronous voltage control chip and its peripheral circuit, a pair of switches node of synchronous voltage control chip
And connect, the peripheral circuit of synchronous voltage control chip includes：It is arranged on a pair of switches node and the institute of synchronous voltage control chip
State the energy storage inductor between the power end of USB interface, be arranged between the current limliting end of synchronous voltage control chip and earth terminal
Voltage control current-limiting resistance, the frequency setting being arranged between the set of frequency end of synchronous voltage control chip and earth terminal electricity
Resistance.
It is used as a kind of preferred scheme, in described USB interface-based adaptive quick-charging circuit, described rectification
Output circuit includes：At least two in parallel output commutation diodes and in parallel with this at least two output commutation diode
Resistance capaciting absorpting circuit.
It is used as a kind of preferred scheme, in described USB interface-based adaptive quick-charging circuit, described benchmark
Potential circuit includes：Divider resistance and the nonpolarity filtered electrical of benchmark under divider resistance, benchmark on controllable accurate source of stable pressure, benchmark
Hold, the anode tap ground connection of controllable accurate source of stable pressure, the one of the nonpolarity filter capacitor of cathode terminal and benchmark of controllable accurate source of stable pressure
End, which is connected on the negative electrode of optocoupler, the other end and benchmark of the nonpolarity filter capacitor of control end and benchmark of controllable accurate source of stable pressure, to be divided
One end of divider resistance is connected under one end of piezoresistance, benchmark, the other end of divider resistance and rectifying output circuit on benchmark
Power output end is connected, the other end ground connection of divider resistance under benchmark.
As a kind of preferred scheme, in described USB interface-based adaptive quick-charging circuit, the rectification is defeated
Enter string in the input circuit of circuit and be provided with fuse；Be parallel between a pair of ac input ends of rectification input circuit one it is pressure-sensitive
Voltage.
The beneficial effects of the invention are as follows：Quick-charging circuit of the present invention, employs two-stage voltage-stabilized power supply structure, the
One-level voltage-stabilized power supply provides a burning voltage for second level voltage-stabilized power supply, and it is synchronous that second level voltage-stabilized power supply employs DC-DC
Voltage control chip, the synchronous voltage control chip is engaged with fast charge protocol control circuit, can be achieved based on a certain logical
Interrogate the quick charge of the smart electronicses product for being connected to USB interface of agreement.The structure of above-mentioned quick-charging circuit is very tight
Gather, wherein employ uniqueness feedback circuit, reversed peak protection circuit, reference voltage circuit, additionally use resistance-capacitance absorption electricity
Road so that the work of whole quick-charging circuit is highly stable reliable.
Brief description of the drawings
Fig. 1 is the electric theory structure schematic diagram of adaptive quick-charging circuit of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the USB interface-based adaptive quick-charging circuit of one kind of the present invention is described in detail
Specific embodiment.
As shown in figure 1, USB interface-based adaptive quick-charging circuit of the present invention, including：It is defeated as rectification
The rectifier bridge D1 that enters the model MB6S of circuit, the input filter circuit C1 being made up of 33UF/400V electrochemical capacitor, by model
For the Switching Power Supply control chip IC1 of TOP254 compositions, comprising primary coil (1,3 windings in figure), secondary coil (in figure
A, B winding) and the transformer T of feedback coil (4,5 windings in figure), the output that is made up of 330UF/16V electrochemical capacitor filter
Wave circuit C8 and feedback circuit and rectifying output circuit, synchronous voltage control circuit (also referred to as DC-DC voltage conversion circuits)
Circuit is controlled with fast charge protocol, a kind of concrete structure of the synchronous voltage control circuit includes：Model HX1314G's
Synchronous voltage control chip IC 4 and its peripheral circuit, a pair of switches node SW (5,6 pin) of synchronous voltage control chip IC 4 is simultaneously
Connect, the peripheral circuit of synchronous voltage control chip IC 4 includes：It is arranged on a pair of switches node of synchronous voltage control chip IC 4
5A47UHs of the SW (5,6 pin) between USB interface J power end VDD energy storage inductor L, it is arranged on synchronous voltage control chip
Resistance between IC4 current limliting end (3 pin) ILIT and earth terminal GND (7,8 pin) is 82K voltage control current-limiting resistance R10, set
Put set of frequency end RT (2 pin) the frequency setting electricity that resistance is 1M between earth terminal GND in synchronous voltage control chip IC 4
Hinder R9；A kind of concrete structure of the fast charge protocol control circuit includes：Model FP6601Q fast charge protocol control
Coremaking piece IC5 and its peripheral circuit, the fast charge protocol control chip IC5 control ends QC_EN (4 pin) and power end VDD (5
Pin) it is connected, fast charge protocol control chip IC5 peripheral circuit includes：String is located at fast charge protocol control chip IC5
Power end VDD and USB interface J power end VDD between resistance be that filling soon for 2.2K controls the current-limiting resistance R13, resistance to be
Filling soon for 100K controls divider resistance R11 and resistance to fill the lower divider resistance R12 of control soon for 30K, and the upper partial pressure of control is filled soon
Resistance R11 one end is connected rear, with fast charge protocol control chip IC5 with filling the lower divider resistance R12 of control one end soon
Feedback output end FBO (3 pin) is connected, and the power end VDD phases of the upper divider resistance R11 of the control other end and USB interface J are filled soon
Even, the lower divider resistance R12 of control other end ground connection is filled soon；A kind of concrete structure of the rectifying output circuit includes：Model
What the output commutation diode D4 and D5 for SB1045L and the resistance R5 and 1nF/200V by 47 Europe mother electric capacity C7 was constituted
Resistance capaciting absorpting circuit, resistance R5 one end is connected with electric capacity C7 one end, output commutation diode D4 positive pole and output rectification
Diode D5 positive pole is connected after being connected with the resistance R5 other end, output commutation diode D4 negative pole and output rectification two pole
Pipe D5 negative pole is connected after being connected with the electric capacity C7 other end；A kind of concrete structure of the feedback circuit includes：Model
PC817 optocoupler IC2, as one way conducting device model RF106 diode D3 and by model TL431 can
Control precision voltage regulator IC3, resistance be under the benchmark that divider resistance R7, resistance are 51K on 200K benchmark divider resistance R8 and
The reference voltage circuit that the 47nF/50V nonpolarity filter capacitor C9 of benchmark is constituted, controllable accurate source of stable pressure IC3 anode termination
Ground, the controllable accurate source of stable pressure IC3 nonpolarity filter capacitor C9 of cathode terminal and benchmark one end is connected to optocoupler IC2 negative electrode, can
Control one of divider resistance R7 on precision voltage regulator IC3 control end and the nonpolarity filter capacitor C9 of the benchmark other end and benchmark
Divider resistance R8 one end is connected under end, benchmark, and the divider resistance R7 other end and the power supply of rectifying output circuit are defeated on benchmark
Go out the i.e. VDD12V in end to be connected, divider resistance R8 other end ground connection under benchmark；The anode of the optocoupler IC2 passes through 200 Europe
Female benchmark current-limiting resistance R6 is that VDD12V is connected with the power output end of the rectifying output circuit, optocoupler IC2 colelctor electrode
It is connected with diode D3 negative pole, diode D3 positive pole is connected with the respective end of feedback coil, another termination of feedback coil
Ground, optocoupler IC2 emitter stage with control end be connected, Switching Power Supply control chip IC1 drain electrode passes through reversed peak protection electricity
Road is connected with rectifier bridge D1 power output end V+, Switching Power Supply control chip IC1 source ground, Switching Power Supply control chip
IC1 start end is connected to rectifier bridge D1 by the resistance R1 and R2 that two resistances being serially connected as start-up circuit are 2M
Power output end V+；Described reversed peak protection circuit includes：It is formed in parallel by resistance R3 and R4 that resistance is 200K
Reversed peak protective resistance (resistance R3 and R4 parallel connection can improve reliability), 103/1000V reversed peak protection electric capacity C2
With model M7 reversed peak protection diode D2, phase after reversed peak protective resistance is in parallel with reversed peak protection electric capacity C2
The one end answered is connected to rectifier bridge D1 power output end V+, after reversed peak protective resistance is in parallel with reversed peak protection electric capacity C2
The other end be connected with the negative pole of the reversed peak protection diode D2, reversed peak protection diode D2 positive pole and switch
Power supply control chip IC1 drain electrode is connected；The power output end VDD12V of the rectifying output circuit and synchronous voltage control electricity
Road IC4 power input VIN (4 pin) is connected, the charging output end of synchronous voltage control circuit be energy storage inductor L output ends with
USB interface J power end VDD is connected, fast charge protocol control chip IC5 feedback output end FBO and synchronous voltage control
The feedback end FB of chip IC 4 is connected, USB interface J signal end D+ and D-with fast charge protocol control chip IC5 D+ and
D- is accordingly connected one by one；In the present embodiment, string is provided with fuse F1 in the input circuit of the rectifier bridge D1；Rectifier bridge D1
Model 10D471 pressure sensitive voltage MOV is parallel between a pair of ac input end AC on road.
In summary, only presently preferred embodiments of the present invention, not for limiting the scope that the present invention is implemented, it is all according to
The equivalent changes and modifications that shape, construction, feature and spirit described in scope of the invention as claimed are made, all should be included in this
In the right of invention.
Claims (6)
1. a kind of USB interface-based adaptive quick-charging circuit, including：Rectification input circuit, input filter circuit, switch
Power supply control chip, transformer, rectifying output circuit, output filter circuit and feedback circuit, it is characterised in that：Described is adaptive
Inductive charging circuit also includes：Synchronous voltage control circuit and fast charge protocol control circuit, the electricity of the rectifying output circuit
The power input of source output terminal and synchronous voltage control circuit is connected, the charging output end of synchronous voltage control circuit with it is described
Power end, the power end of USB interface of fast charge protocol control circuit are connected, and the feedback of fast charge protocol control circuit is defeated
Go out end with the feedback end of synchronous voltage control circuit to be connected, a pair of signal ends and the fast charge protocol of USB interface control circuit
The respective end of fast charge protocol control circuit is connected；Described transformer includes one group of primary coil, one group of secondary coil
With one group of feedback coil, described feedback circuit includes：Optocoupler, feedback diode and reference voltage circuit, the anode of optocoupler
It is connected by a benchmark current-limiting resistance with the power output end of the rectifying output circuit, negative electrode and the reference voltage electricity of optocoupler
The output end on road is connected, and the colelctor electrode of optocoupler is connected with the negative pole of feedback diode, the positive pole and feedback coil of feedback diode
Respective end be connected, the other end of feedback coil ground connection, the emitter stage of optocoupler is connected with the control end of switching power source control circuit,
The drain electrode of Switching Power Supply control chip is connected by reversed peak protection circuit with the power output end of rectification input circuit, switch
The source ground of power supply control chip, the start end of Switching Power Supply control chip is connected to rectification input circuit by start-up circuit
Power output end；Described reversed peak protection circuit includes：Reversed peak protective resistance, reversed peak protect electric capacity and reverse
Peak value protection diode, corresponding one end is connected to input rectifying after reversed peak protective resistance is in parallel with reversed peak protection electric capacity
The power output end of circuit, the other end is connected with the negative pole of the reversed peak protection diode, reversed peak protection diode
Positive pole be connected with the drain electrode of Switching Power Supply control chip.
2. the USB interface-based adaptive quick-charging circuit of one kind according to claim 1, it is characterised in that：It is described
Fast charge protocol control circuit include：Fast charge protocol control chip and its peripheral circuit, fast charge protocol control
The control end of chip is connected with power end, and the peripheral circuit of fast charge protocol control chip includes：String is located at quick charge association
Discuss between the power end and USB interface power end of control chip filling control current-limiting resistance soon, fill the upper divider resistance of control soon and
Fill the lower divider resistance of control soon, one end of the upper divider resistance of control is filled soon and fill soon the lower divider resistance of control one end be connected it is rear,
It is connected with the feedback output end of fast charge protocol control chip, the other end and USB interface of control upper divider resistance is filled soon
Power end is connected, and the other end ground connection of the lower divider resistance of control is filled soon.
3. the USB interface-based adaptive quick-charging circuit of one kind according to claim 1, it is characterised in that：It is described
Synchronous voltage control circuit include：Synchronous voltage control chip and its peripheral circuit, the one of synchronous voltage control chip are split
Artis simultaneously connects, and the peripheral circuit of synchronous voltage control chip includes：It is arranged on a pair of switches section of synchronous voltage control chip
Point with the energy storage inductor between the power end of the USB interface, be arranged on current limliting end and the earth terminal of synchronous voltage control chip
Between voltage control current-limiting resistance, the frequency that is arranged between the set of frequency end of synchronous voltage control chip and earth terminal sets
Determine resistance.
4. the USB interface-based adaptive quick-charging circuit of one kind according to claim 1, it is characterised in that：It is described
Rectifying output circuit include：At least two in parallel output commutation diodes and with this at least two output rectifications two pole
Pipe resistance capaciting absorpting circuit in parallel.
5. the USB interface-based adaptive quick-charging circuit of one kind according to claim 1, it is characterised in that：It is described
Reference voltage circuit include：Divider resistance and the nonpolarity filter of benchmark under divider resistance, benchmark on controllable accurate source of stable pressure, benchmark
Ripple electric capacity, the anode tap ground connection of controllable accurate source of stable pressure, the nonpolarity filter capacitor of cathode terminal and benchmark of controllable accurate source of stable pressure
One end be connected to the negative electrode of the optocoupler, the other end of the nonpolarity filter capacitor of control end and benchmark of controllable accurate source of stable pressure with
One end of divider resistance is connected under one end of divider resistance, benchmark on benchmark, and the other end of divider resistance and rectification are defeated on benchmark
The power output end for going out circuit is connected, the other end ground connection of divider resistance under benchmark.
6. the USB interface-based adaptive quick-charging circuit of one kind according to any one of claim 1 to 5, it is special
Levy and be：String is provided with fuse in the input circuit of the rectification input circuit；A pair of ac input ends of rectification input circuit
Between be parallel with a pressure sensitive voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263747.XA CN107069912A (en) | 2017-04-21 | 2017-04-21 | A kind of USB interface-based adaptive quick-charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263747.XA CN107069912A (en) | 2017-04-21 | 2017-04-21 | A kind of USB interface-based adaptive quick-charging circuit |
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| Publication Number | Publication Date |
|---|---|
| CN107069912A true CN107069912A (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710263747.XA Pending CN107069912A (en) | 2017-04-21 | 2017-04-21 | A kind of USB interface-based adaptive quick-charging circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361254A (en) * | 2018-12-22 | 2019-02-19 | 东莞市壹带电源科技有限公司 | Intelligent charger and mobile power source one full of the quick charger automatically shut down |
| CN109494820A (en) * | 2017-09-11 | 2019-03-19 | 深圳市源尤电源科技有限公司 | A kind of USB output fast charge protocol-compliant circuit |
| CN112310755A (en) * | 2020-06-23 | 2021-02-02 | 神州融安科技（北京）有限公司 | Charging data transmission circuit, magnetic suction seat and charging data line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2794009Y (en) * | 2005-04-20 | 2006-07-05 | 冯晓科 | Charger of mobile power supply |
| CN205944661U (en) * | 2016-08-30 | 2017-02-08 | 浙江摩乐科技有限公司 | Double -H groove weld SB quick charge socket |
-
2017
- 2017-04-21 CN CN201710263747.XA patent/CN107069912A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2794009Y (en) * | 2005-04-20 | 2006-07-05 | 冯晓科 | Charger of mobile power supply |
| CN205944661U (en) * | 2016-08-30 | 2017-02-08 | 浙江摩乐科技有限公司 | Double -H groove weld SB quick charge socket |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494820A (en) * | 2017-09-11 | 2019-03-19 | 深圳市源尤电源科技有限公司 | A kind of USB output fast charge protocol-compliant circuit |
| CN109494820B (en) * | 2017-09-11 | 2022-09-06 | 深圳市源尤电源科技有限公司 | USB output quick charging protocol compatible circuit |
| CN109361254A (en) * | 2018-12-22 | 2019-02-19 | 东莞市壹带电源科技有限公司 | Intelligent charger and mobile power source one full of the quick charger automatically shut down |
| CN112310755A (en) * | 2020-06-23 | 2021-02-02 | 神州融安科技（北京）有限公司 | Charging data transmission circuit, magnetic suction seat and charging data line |
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Address after: Zhangjiagang City People's road Tangqiao town Suzhou City, Jiangsu province 215611 Zhangjiagang City Bai Ruipu Electric Technology Co. Ltd. Applicant after: Jiangsu bairuipu Intelligent Technology Co.,Ltd. Address before: Zhangjiagang City People's road Tangqiao town Suzhou City, Jiangsu province 215611 Zhangjiagang City Bai Ruipu Electric Technology Co. Ltd. Applicant before: ZHANGJIAGANG CITY BAREP ELECTRICAL TECHNOLOGY Co.,Ltd. |
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Address after: 215615 bairuipu, no.6, Xionghua Road, Tangqiao town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant after: Jiangsu bairuipu Intelligent Technology Co.,Ltd. Address before: Zhangjiagang City People's road Tangqiao town Suzhou City, Jiangsu province 215611 Zhangjiagang City Bai Ruipu Electric Technology Co. Ltd. Applicant before: Jiangsu bairuipu Intelligent Technology Co.,Ltd. |
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Application publication date: 20170818 |