CN110880630A - Battery pack, charging heat dissipation control method thereof and charger - Google Patents
Battery pack, charging heat dissipation control method thereof and charger Download PDFInfo
- Publication number
- CN110880630A CN110880630A CN201911187869.0A CN201911187869A CN110880630A CN 110880630 A CN110880630 A CN 110880630A CN 201911187869 A CN201911187869 A CN 201911187869A CN 110880630 A CN110880630 A CN 110880630A
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- battery pack
- charger
- charging
- fan
- air outlet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery pack, a charging and heat dissipation control method thereof and a charger, and belongs to the technical field of batteries. The battery pack is provided with a heat dissipation air duct, an air inlet and an air outlet, the two ends of the heat dissipation air duct are respectively connected with the air inlet and the air outlet, the battery pack is provided with window hiding devices at the air inlet and the air outlet, and when the window hiding devices are opened, the corresponding air inlets and the corresponding air outlets are opened; the charger is internally provided with a fan, the charger is provided with a fan air outlet corresponding to the position of the fan, and the position of the fan air outlet corresponds to the position of the air inlet of the battery pack. According to the battery pack, the fan of the charger is used for dissipating heat inside the battery pack in the charging process, so that the safety of the battery pack in the charging process is effectively guaranteed, the performance of the battery pack is effectively protected, the service life of the battery pack is prolonged, the air inlet and the air outlet are hidden when the battery pack is not charged, and dust and sundries are effectively reduced and prevented from entering the battery pack.
Description
Technical Field
The present invention relates to the field of battery technology, and more particularly, to a battery pack, a charging and heat dissipation control method thereof, and a charger.
Background
When the existing various rechargeable battery packs are charged, because the internal electric core, the connecting wires, the contact points, various electronic components and other links have impedance, the battery packs can generate heat in the charging process, the performance of the battery packs can be reduced when the battery packs generate heat seriously, the service life of the battery packs is shortened, and even fire disasters can be caused.
Disclosure of Invention
The invention aims to provide a battery pack, a charging heat dissipation control method thereof and a charger, and solves the technical problems that the battery pack can be degraded in performance, shortened in service life and even possibly cause fire when heated seriously in the charging process.
The technical purpose of the invention is realized by the following technical scheme:
according to one aspect of the present invention, a battery pack is provided, wherein a heat dissipation air duct is disposed inside the battery pack, the battery pack is provided with an air inlet and an air outlet, two ends of the heat dissipation air duct are respectively connected to the air inlet and the air outlet, the battery pack is provided with window hiding devices at the air inlet and the air outlet, and when the window hiding devices are opened, the corresponding air inlet and the corresponding air outlet are opened.
Preferably, the window hiding device comprises a baffle plate which is rotatably connected, and the baffle plate can be rotated to be opened and closed.
As further optimization, the one end of baffle is equipped with the baffle pivot that is used for rotating the connection, be equipped with the torsional spring in the baffle pivot, when the baffle rotates to realize opening, the torsional spring produces elastic deformation.
As a further optimization, the window hiding device further comprises a reset auxiliary device, the reset auxiliary device comprises a reset spring, one end of the reset spring is fixed on the baffle, and the other end of the reset spring is fixed in the battery pack.
As further optimization, the window hiding device further comprises a reset auxiliary device, the reset auxiliary device comprises a reset hook which is connected in a rotating mode, one end of the reset hook is provided with a reset rotating shaft which is used for being connected in a rotating mode, the other end of the reset hook hooks the baffle, the reset rotating shaft is provided with a reset torsion spring which is used for driving the reset hook to rotate, reset and drive the baffle to rotate, reset and close.
According to another aspect of the present invention, there is provided a charging and heat dissipation control method for a battery pack, including the following steps:
detecting that a charger is inserted, wherein the charger makes the air inlet and the air outlet opened after being inserted;
performing protocol pairing with the charger;
and after the pairing is successful, starting charging until the charging is completed, wherein in the charging process, the fan of the charger keeps blowing, and the inside of the battery pack is blown to dissipate heat.
As a further optimization, after the pairing is successful, starting charging until the charging is completed includes:
and judging whether charging is needed or not, if not, feeding back to the charger and stopping interaction with the charger, and if so, starting charging until charging is completed.
According to another aspect of the present invention, there is provided a charging and heat dissipation control method for a battery pack, including the steps of:
detecting that a charger has been inserted;
performing protocol pairing with the charger;
after the pairing is successful, the air inlet and the air outlet are opened, the charging is started until the charging is completed, and in the charging process, the fan of the charger keeps blowing to blow and dissipate the heat of the interior of the battery pack.
According to another aspect of the present invention, a fan is disposed inside the charger, and a fan outlet is disposed at a position corresponding to the fan, where the position of the fan outlet corresponds to the position of the air inlet of the battery pack.
According to still another aspect of the present invention, there is provided a battery pack charging heat dissipation control method, including the steps of:
detecting that a battery pack has been inserted;
performing protocol pairing with the battery pack;
after the pairing is successful, the power supply and the fan are started to charge until the charging is completed, and in the charging process, the fan keeps blowing to blow and dissipate heat of the interior of the battery pack.
In conclusion, the invention has the following beneficial effects: according to the battery pack, the fan of the charger is used for dissipating heat inside the battery pack in the charging process, so that the safety of the battery pack in the charging process is effectively guaranteed, the performance of the battery pack is effectively protected, the service life of the battery pack is prolonged, the air inlet and the air outlet are hidden when the battery pack is not charged, and dust and sundries are effectively reduced and prevented from entering the battery pack.
Drawings
Fig. 1 is a schematic structural view of a part of the structure of a battery pack in the first embodiment;
FIG. 2 is a schematic view showing a partial structure of a battery pack and a partial structure of a charger according to the first embodiment;
fig. 3 is a flowchart illustrating a method for controlling charging and heat dissipation of a battery pack according to a first embodiment;
fig. 4 is a flowchart illustrating a battery pack charging heat dissipation control method of a charger according to an embodiment;
fig. 5 is a flowchart illustrating a charging and heat dissipation control method of a battery pack according to a second embodiment.
In the figure: 1. a battery pack; 11. an air inlet; 12. an air outlet; 13. a socket; 21. a baffle plate; 22. a reset hook; 3. a charger; 31. an air outlet of the fan; 32. and (7) pushing the block.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1, the present embodiment discloses a battery pack 1, wherein a heat dissipation air duct is disposed inside the battery pack 1, and the heat dissipation air duct passes through various internal heating electronic components, such as a power field effect transistor, as many as possible without affecting the normal use inside the battery pack. The battery pack 1 is provided with an air inlet 11 and an air outlet 12, and two ends of the heat dissipation air duct are respectively connected with the air inlet 11 and the air outlet 12. This group battery 1 all is equipped with the window and hides the device in air intake department 11 and air outlet 12 department, hides the device and closes when the window, and corresponding air intake 11 and air outlet 12 close, and when the window hides the device and opens, corresponding air intake 11 and air outlet 12 open. As shown in fig. 2, this embodiment further discloses a charger 3 configured with the battery pack 1, a fan is disposed inside the charger 3, a fan outlet 31 is disposed at a position of the charger 3 corresponding to the fan, and the position of the fan outlet 31 corresponds to the position of the air inlet 11 of the battery pack 1. After the charger 3 is inserted into the battery pack 1, the fan outlet 31 is aligned with the air inlet 11 of the battery pack 1. When charging is performed, after the charger 3 is inserted into the battery pack 1, the window hiding device of the battery pack 1 is opened, and in the charging process, the fan inside the charger 3 is turned on, and the air blown out from the fan air outlet 31 by the fan inside the charger 3 enters the heat dissipation air duct inside the battery pack 1 from the air inlet 11 of the battery pack 1 and then is blown out from the air outlet 12 of the battery pack 1, so that the heat inside the battery pack 1 is taken away. It should be noted that the battery pack 1 may be a battery pack 1 that cannot be attached to the device or cannot be easily detached for charging, or may be a battery pack 1 that is detachable. In the battery pack 1 in this embodiment, the fan of the charger 3 is used to dissipate heat inside the battery pack 1 during charging, so that safety of the battery pack 1 during charging is effectively ensured, the performance of the battery pack 1 is effectively protected, the service life of the battery pack 1 is prolonged, the air inlet 11 and the air outlet 12 are hidden when the battery pack is not charged, and dust and sundries are effectively reduced and prevented from entering the battery pack 1.
The window hiding device can be a structure which is controlled by the battery pack to realize automatic opening, and can also be a structure which is manually opened by a tool or other modes. As shown in fig. 1 and 2, in the present embodiment, the window hiding device includes a baffle 21 rotatably connected, and the baffle 21 is rotatable to open and close the corresponding air inlet 11 and air outlet 12. One end of the baffle 21 is provided with a baffle rotating shaft for rotating connection, and the baffle rotating shaft is provided with a torsion spring. When the baffle 21 rotates to be opened, the torsion spring generates elastic deformation, and the elastic force generated by the elastic deformation of the torsion spring can drive the baffle 21 to rotate and reset so as to be closed. As further optimization, the window hiding device further comprises a reset auxiliary device, the reset auxiliary device comprises a reset hook 22 which is rotatably connected, one end of the reset hook 22 is provided with a reset rotating shaft which is rotatably connected, and the other end of the reset hook 22 hooks the baffle 21. The reset rotating shaft is provided with a reset torsion spring which is used for driving the reset hook 22 to rotate and reset and driving the baffle 21 to rotate and reset to realize closing. The charger 3 matched with the battery pack 1 is provided with two push blocks 32, the battery pack 1 is provided with two sockets 13, the positions of the sockets 13 correspond to the positions of the baffle 21 and the reset hook 22, and the positions of the push blocks 32 correspond to the positions of the sockets 13. When the charger 3 is inserted into the battery pack 1, the two pushing blocks 32 are inserted corresponding to the two sockets 13 respectively, and push the corresponding reset hooks 22 to rotate respectively, the baffle 21 is driven by the reset hooks 22 to rotate to open the corresponding air inlet 11 and air outlet 12, and the torsion spring and the reset torsion spring both generate elastic deformation; when the charger 3 is pulled out of the battery pack 1, the elasticity generated by the torsion spring and the reset torsion spring pushes the baffle 21 and the reset hook 22 to rotate and reset to close. It should be noted that, in other embodiments, the auxiliary return device may only include a return spring, one end of the return spring is fixed on the baffle 21, and the other end of the return spring is fixed inside the battery pack 1, and the baffle 21 rotates to enable the return spring to generate elastic deformation when opening.
The present embodiment also discloses the above method for controlling charging and heat dissipation of the battery pack 1, which is shown in fig. 3, and the method includes the following steps:
in step S10, it is detected that the charger 3 is inserted, and the charger 3 is inserted such that the air inlet and the air outlet are opened.
Specifically, after the charger 3 is inserted, the battery pack 1 may detect that the charger is inserted through a mechanical or electronic detection device disposed in a charging socket of the battery pack 1, and the charger 3 opens the air inlet 11 and the air outlet 12 of the battery pack 1 through two push blocks 32 on the charger 3 during the insertion process.
In step S20, protocol pairing is performed with the charger 3.
Specifically, the battery pack 1 and the charger 3 are better matched, protocols matched with each other are stored in the battery pack 1 and the charger 3 respectively, and if the battery pack 1 and the charger 3 can be successfully matched, the matched battery pack 1 and the matched charger 3 are indicated; if the pairing is not successful, it indicates that the battery pack 1 and the charger 3 are not matched, and the subsequent charging operation is not performed.
Step S30, after the pairing is successful, charging is started until the charging is completed, and in the charging process, the fan of the charger 3 keeps blowing air to blow air to dissipate heat inside the battery pack 1.
Specifically, after the battery pack 1 and the charger 3 are successfully paired, the charger 3 starts to charge the battery pack 1 until charging is completed, and in the charging process, the fan of the charger 3 starts to blow air inside the battery pack 1 for heat dissipation. As an optimization, the step S30 specifically includes: and after the pairing is successful, judging whether charging is needed, if not, feeding back to the charger 3 and stopping interaction with the charger 3, and if so, starting charging until the charging is finished. The situation that the electric quantity of the battery pack 1 is sufficient can be effectively avoided by judging the charging requirement, the battery pack 1 is continuously charged, energy waste is caused, and certain potential safety hazards are generated.
The embodiment also discloses a battery pack charging and heat dissipation control method of the charger 3, which includes the following steps:
in step S100, it is detected that the battery pack 1 has been inserted.
Specifically, a mechanical or electronic detection means for detecting whether the charger 3 is inserted into the battery pack 1 may be provided on the charging plug of the charger 3 or in another suitable place.
Step S200, performing protocol pairing with the battery pack 1.
Specifically, the battery pack 1 and the charger 3 are better matched, protocols matched with each other are stored in the battery pack 1 and the charger 3 respectively, and if the battery pack 1 and the charger 3 can be successfully matched, the matched battery pack 1 and the matched charger 3 are indicated; if the pairing is not successful, it indicates that the battery pack 1 and the charger 3 are not matched, and the subsequent charging operation is not performed.
And step S300, after the pairing is successful, starting the power supply and the fan, starting charging until the charging is completed, wherein the fan keeps blowing in the charging process, and the inside of the battery pack 1 is blown and cooled.
Specifically, after the protocol pairing of the battery pack 1 and the charger 3 is successful, the charger 3 starts the power supply and the fan to charge the battery pack 1 until the charging of the battery pack is completed, and in the charging process, the fan inside the charger 3 keeps blowing to dissipate heat inside the battery pack 1. As an optimization, the step S300 specifically includes: after the pairing is successful, feedback information about whether the battery pack 1 needs to be charged is received, if not, the interaction with the battery pack 1 is stopped, and if so, a power supply and a fan are started to start charging until the charging is completed.
Example two
The difference between this embodiment and the first embodiment is: the embodiment discloses a charging and heat dissipation control method of a battery pack, which is used for realizing automatic opening and closing of a window hiding device under the control of the battery pack, and as shown in fig. 5, the control method comprises the following steps:
in step S1000, it is detected that a charger is inserted.
Step S2000, performing protocol pairing with the charger.
And step S3000, after the pairing is successful, opening the air inlet and the air outlet, starting charging until the charging is completed, wherein in the charging process, the fan of the charger keeps blowing, and the inside of the battery pack is blown and cooled.
As an optimization, step S3000 specifically includes: and after the pairing is successful, judging whether charging is needed, if not, feeding back to the charger and stopping interaction with the charger, and if so, starting the power supply and the fan to charge until the charging is finished.
The above specific embodiments are merely illustrative of the present invention, and are not restrictive, and those skilled in the art can modify the above embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present invention.
Claims (10)
1. A battery pack, characterized in that: the battery pack is internally provided with a heat dissipation air duct, the battery pack is provided with an air inlet and an air outlet, two ends of the heat dissipation air duct are respectively connected with the air inlet and the air outlet, the battery pack is provided with a window hiding device at the air inlet and the air outlet, and when the window hiding device is opened, the corresponding air inlet and the corresponding air outlet are opened.
2. The battery pack according to claim 1, characterized in that: the window hiding device comprises a baffle which is rotatably connected, and the baffle can be rotated to be opened and closed.
3. The battery pack according to claim 2, characterized in that: the one end of baffle is equipped with the baffle pivot that is used for rotating the connection, be equipped with the torsional spring in the baffle pivot, when the baffle rotates to realize opening, the torsional spring produces elastic deformation.
4. The battery pack according to claim 2 or 3, characterized in that: the window hiding device further comprises a resetting auxiliary device, the resetting auxiliary device comprises a resetting spring, one end of the resetting spring is fixed on the baffle, and the other end of the resetting spring is fixed in the battery pack.
5. The battery pack according to claim 2 or 3, characterized in that: the window hiding device further comprises a resetting auxiliary device, the resetting auxiliary device comprises a resetting hook which is connected in a rotating mode, one end of the resetting hook is provided with a resetting rotating shaft which is used for rotating to connect, the other end of the resetting hook hooks the baffle, the resetting rotating shaft is provided with a reset torsion spring which is used for driving the resetting hook to rotate to reset and drive the baffle to rotate to reset and realize closing.
6. A charging heat dissipation control method for a battery pack according to claim 1, characterized in that: the method comprises the following steps:
detecting that a charger is inserted, wherein the charger makes the air inlet and the air outlet opened after being inserted;
performing protocol pairing with the charger;
and after the pairing is successful, starting charging until the charging is completed, wherein in the charging process, the fan of the charger keeps blowing, and the inside of the battery pack is blown to dissipate heat.
7. The charging and heat dissipation control method according to claim 6, wherein: after the pairing is successful, starting charging until the charging is completed comprises:
and judging whether charging is needed or not, if not, feeding back to the charger and stopping interaction with the charger, and if so, starting charging until charging is completed.
8. A charging heat dissipation control method for a battery pack according to claim 1, characterized in that: the method comprises the following steps:
detecting that a charger has been inserted;
performing protocol pairing with the charger;
after the pairing is successful, the air inlet and the air outlet are opened, the charging is started until the charging is completed, and in the charging process, the fan of the charger keeps blowing to blow and dissipate the heat of the interior of the battery pack.
9. A charger, characterized by: the charger is internally provided with a fan, the charger is provided with a fan air outlet at the position corresponding to the fan, and the position of the fan air outlet corresponds to the position of the air inlet of the battery pack as claimed in claim 1.
10. A battery pack charging and heat dissipation control method is characterized in that: the method comprises the following steps:
detecting that a battery pack has been inserted;
performing protocol pairing with the battery pack;
after the pairing is successful, the power supply and the fan are started to charge until the charging is completed, and in the charging process, the fan keeps blowing to blow and dissipate heat of the interior of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187869.0A CN110880630B (en) | 2019-11-28 | 2019-11-28 | Battery pack, charging heat dissipation control method thereof and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187869.0A CN110880630B (en) | 2019-11-28 | 2019-11-28 | Battery pack, charging heat dissipation control method thereof and charger |
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| Publication Number | Publication Date |
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| CN110880630A true CN110880630A (en) | 2020-03-13 |
| CN110880630B CN110880630B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911187869.0A Active CN110880630B (en) | 2019-11-28 | 2019-11-28 | Battery pack, charging heat dissipation control method thereof and charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11670808B2 (en) | 2019-12-03 | 2023-06-06 | Milwaukee Electric Tool Corporation | Charger and charger system |
| CN117254566A (en) * | 2023-11-14 | 2023-12-19 | 深圳市安仕新能源科技有限公司 | Battery charging device with heat dissipation function for battery |
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| JP2007236028A (en) * | 2006-02-27 | 2007-09-13 | Matsushita Electric Works Ltd | Charging apparatus and charger set equipped with it |
| CN203883234U (en) * | 2014-06-07 | 2014-10-15 | 温州佳居电气有限公司 | Switching socket with dust-proof function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11670808B2 (en) | 2019-12-03 | 2023-06-06 | Milwaukee Electric Tool Corporation | Charger and charger system |
| US12015130B2 (en) | 2019-12-03 | 2024-06-18 | Milwaukee Electric Tool Corporation | Charger and charger system |
| CN117254566A (en) * | 2023-11-14 | 2023-12-19 | 深圳市安仕新能源科技有限公司 | Battery charging device with heat dissipation function for battery |
| CN117254566B (en) * | 2023-11-14 | 2024-03-26 | 深圳市安仕新能源科技有限公司 | Battery charging device with heat dissipation function for battery |
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| CN110880630B (en) | 2021-08-31 |
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| CP02 | Change in the address of a patent holder |
Address after: 518000 Room 401, block D, building 7, Shenzhen International Innovation Valley, Dashi 1st Road, Xili community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: JUXING TECHNOLOGY (SHENZHEN) Co.,Ltd. Address before: 518000 building 101, building R3b, Gaoxin industrial village, No.018, Gaoxin South 7th Road, community, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: JUXING TECHNOLOGY (SHENZHEN) Co.,Ltd. |