CN108091801A - A kind of single battery of hexagonal honeycomb structure - Google Patents
A kind of single battery of hexagonal honeycomb structure Download PDFInfo
- Publication number
- CN108091801A CN108091801A CN201711397381.1A CN201711397381A CN108091801A CN 108091801 A CN108091801 A CN 108091801A CN 201711397381 A CN201711397381 A CN 201711397381A CN 108091801 A CN108091801 A CN 108091801A
- Authority
- CN
- China
- Prior art keywords
- battery
- heat management
- honeycomb structure
- hexagonal honeycomb
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 6
- 229920006335 epoxy glue Polymers 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000013517 stratification Methods 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/6567—Liquids
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention discloses a kind of single battery of hexagonal honeycomb structure, including at least one battery, battery tray and heat management pipe, mounting groove is set in the battery tray, the battery is installed in the mounting groove of the battery tray.Offer to install the placing groove of heat management pipe in the battery tray side, the battery through the placing groove and is clamped in the mounting groove by the heat management pipe.The present invention has the following advantages：The single battery of hexagonal honeycomb structure can be combined with chassis or floor structure, and certain strength and stiffness can be ensured simultaneously by saving vehicle space；Using the deck design of stratification, can power supply be connected and be managed system and be combined, while ensure being effectively isolated between strong and weak electricity；Battery pack is presented with the battery module of structuring, and the various chassis that can be suitable for different structure is first-class.
Description
【Technical field】
Cell system field more particularly to a kind of list of hexagonal honeycomb structure the present invention relates to New-energy electric vehicle
Body battery.
【Background technology】
Domestic and international batteries of electric automobile packet system at present, can be mainly divided into two major classes：(1) battery case type；The type
Mainly according to complete vehicle structure, a set of babinet corresponding with complete vehicle structure is designed, and battery is positioned in the babinet so that electricity
Pond can be fixed in battery case, while the functions such as monitoring and management for realizing battery performance.China's many Large Electric vapour at present
Vehicle is mostly using this structure.When using this battery pack, need to pay the utmost attention to reserve for it among entire vehicle design to put
Space, i.e. entire vehicle design need to coordinate battery pack structure to carry out.(2) complete vehicle structure compatible type；The type considers that battery is not take up
Vehicle space, directly by some structure divisions of vehicle directly as the direction of battery system.Such as produce LEAF battery pack structure sides daily
Formula, the space for directly placing vehicle bottom plate as battery.The design of this mode combination complete vehicle structure, by battery pack structure with it is whole
Vehicle part or a few part-structures, which combine, to be designed, and has both ensured that vehicle has certain space that uses, while also really
The diversity of battery accommodating structure is protected.
And the mentality of designing of batteries of electric automobile bag is to design a set of babinet being adapted therewith according to complete vehicle structure mostly,
Between complete vehicle structure and battery pack independently of each other, vehicle overall space, which cannot efficiently use, to be caused to be compressed using space, and
Thus battery accommodating structure leads to problems such as to occur that battery pack design cost is high, assembling mode is complicated with respect to unification.
【The content of the invention】
It is an object of the invention to solve the problems, such as that above-mentioned technology exists, a kind of six sides mutually compatible with complete vehicle structure are designed
The single battery of shape honeycomb to realize the design variation of batteries of electric automobile bag, efficiently using vehicle space, makes vehicle knot
Structure lightweight.
To achieve these goals, the technical solution adopted by the present invention is：A kind of single battery of hexagonal honeycomb structure,
Including at least one battery, battery tray and heat management pipe, mounting groove is set in the battery tray, the battery is installed on the battery
In the mounting groove of seat.Offer to install the placing groove of heat management pipe in the battery tray side, the heat management pipe passes through
The battery is simultaneously clamped in the mounting groove by the placing groove.
Preferably, the mounting groove at least places two batteries, and the battery tray is compared with centrosymmetric both sides
Portion sets to place the placing groove of heat management pipe, and the heat management pipe is installed in the placing groove and is clamped on battery described
In mounting groove.
Preferably, heat management pipe pipeline made of aluminium alloy, to be flat, pipe ends are provided with coolant and connect
Mouthful.
Preferably, it is additionally provided with heat conduction epoxy glue between the heat management pipe and the battery.
Preferably, the heat management is the pipeline made of aluminium alloy, is flat, pipeline wall thickness 1mm, outside pipeline
Footpath overall width is 10mm.
Preferably, the single battery of the hexagonal honeycomb structure is described as cellular battery pack system component units
Cellular battery pack system includes bottom plate, battery pack and cover board, sets to install the honeycomb slot of battery pack, institute on the bottom plate
It states battery pack and is installed on formation honeycomb arrangement in the honeycomb slot.The cover board is placed on the top of the battery pack, by described in
Battery pack is pressed in the honeycomb slot；The heat management pipe sequentially passes through the placing groove of several adjacent battery packs.
Preferably, the cover board includes cover layer, light current layer, forceful electric power layer and shielded layer, and the light current layer is arranged on described
Between cover layer and the forceful electric power layer, the shielded layer is arranged between the forceful electric power layer and the battery.
Preferably, it is provided with temperature sensor in the honeycomb slot.
Compared with prior art, the present invention has the following advantages：The single battery of hexagonal honeycomb structure can realize electronic vapour
Vehicle battery pack design variation, efficiently using vehicle space and making complete vehicle structure lightweight, while can ensure certain intensity and
Rigidity；Battery pack is presented with the battery system module of structuring, can be suitable on the various chassis of different structure；It sets
The mixing liquid that filling can freeze inside heat management pipe and heat management pipe radiates for battery, after avoiding battery because using fever
It can not radiate and shorten the working life in time.
【Description of the drawings】
Fig. 1 is a kind of structure diagram of the single battery of hexagonal honeycomb structure of the present invention；
Fig. 2 is the structure diagram of battery tray in a kind of single battery of hexagonal honeycomb structure of the present invention；
Fig. 3 is the top view of battery tray in a kind of single battery of hexagonal honeycomb structure of the present invention；
Fig. 4 is the main view for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
Figure；
Fig. 5 is the left view for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
Figure；
Fig. 6 is the vertical view for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
Figure；
Fig. 7 is the cover board for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
The structure diagram of middle cover flaggy；
Fig. 8 is the cover board for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
The structure diagram of middle forceful electric power layer；
Fig. 9 is the cover board for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
The structure diagram of middle light current layer；
Figure 10 is the lid for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
The structure diagram of shielded layer in plate；
Figure 11 is the bee for the cellular battery pack system being made of a kind of single battery of hexagonal honeycomb structure of the present invention
The structure diagram of nest shape bottom.
【Specific embodiment】
A kind of single battery of hexagonal honeycomb structure of the present invention is carried out below in conjunction with the drawings and specific embodiments detailed
Explanation.
A kind of single battery of hexagonal honeycomb structure, as shown in Figs. 1-3, including at least one battery 2, battery tray 1
With heat management pipe 3, mounting groove is set in the battery tray 1, the battery 2 is installed in the mounting groove of the battery tray 1.Described
1 side of battery tray offers to install the placing groove 12 of heat management pipe 3, and the heat management pipe 3 passes through the placing groove 12 simultaneously
The battery 2 is clamped in the mounting groove, the heat management pipe 3 is contacted with 1 surface of battery, is radiated for battery,
Avoid battery because use fever after can not radiate in time due to shorten the working life.Installation is more than two described in the mounting groove
Battery 2, more than two battery formation connect in parallel or in series.The battery 2 can be rectangular cell, and rectangular cell has
The connection of entire battery pack can be completed by series connection for the features such as volume and capacity are larger, energy density is higher.Compared to other classes
The battery of type, having the advantages that on vehicle that usage quantity is less, management is more convenient etc. has.The rectangular cell is preferably lithium ion
Battery.The single battery of hexagonal honeycomb structure realizes batteries of electric automobile bag as cellular battery pack system component units
Design variation efficiently utilizes vehicle space and makes complete vehicle structure lightweight, can be suitable for the various bottom of different structure
Disk；Cellular battery system is fixed on above vehicle chassis or vehicle bottom plate, can mutually be tied with chassis or floor structure
It closes, certain strength and stiffness can be ensured simultaneously by saving vehicle space.
The mounting groove at least places two batteries 2, and the battery tray 1 is set compared with centrosymmetric both sides
For placing the placing groove 12 of heat management pipe 3, the placing groove 12 can also be set compared with centrosymmetric side two-by-two respectively
4 are equipped with, package heat dissipation can be carried out to battery, improves heat dissipation effect.The heat management pipe 3 is installed in the placing groove 12 simultaneously
In battery 2 is clamped in the mounting groove, heat management pipe 3 is contacted with each battery, battery is made to radiate faster more balanced.
The heat management pipe 3 can be the pipeline made of aluminium alloy, and to be flat, pipeline wall thickness is 1mm or so, is managed
Road outer diameter overall width is 10mm or so.Pipe ends are provided with coolant connection 31, by the coolant connection 31 to pipeline
Filling coolant in inside uses the longevity for battery with battery-heating, to be avoided to shorten because can not radiate in time after using fever due to
Life.The coolant is liquid water and ethylene glycol mixture body, is preferably 50% liquid water and the mixing of 50% ethylene glycol, ensures system
Cold effect.
Heat conduction epoxy glue is additionally provided between the heat management pipe 3 and the battery 2, the heat conduction epoxy glue has heat conduction
The features such as performance is good, thermal shock resistance is strong, use temperature range is wide and electrical insulation capability is excellent, while can also protect the battery from
The abrasion of aluminium-alloy pipe.
As shown in Fig. 4-11, the cellular battery pack system includes bottom plate 6, battery pack and cover board 4, on the bottom plate 6
Setting is for installing the honeycomb slot 61 of battery pack, and the battery pack, which is installed in the honeycomb slot 61, forms honeycomb arrangement, institute
The top that cover board 4 is placed on the battery pack is stated, the battery pack is pressed in the honeycomb slot 61.The shape of the honeycomb slot 61
Shape matches with the battery pack shape, forms stable mounting structure.Preferably, the cross section of the honeycomb slot 61 is six sides
Shape, 1 shape of battery tray of the battery pack is also the hexagonal shape to match with the honeycomb slot 61, forms stable assembling
Structure is not likely to produce loosening or rotation.The heat management pipe 3 sequentially passes through the placing groove of several adjacent battery packs
12, for radiating to battery.The heat management pipe 3 along formed honeycomb arrangement adjacent cell bag placing groove 12 into
Row bending installation, to improve heat dissipation effect.
The cover board 4 includes cover layer 411, light current layer 412, forceful electric power layer 413 and shielded layer 414, and the light current layer 412 is set
It puts between the cover layer 411 and the forceful electric power layer 413, the shielded layer 414 is arranged on the forceful electric power layer 413 and the electricity
Between pond 2, forceful electric power link and the effect of vulnerabilities scan (functions such as including battery management) are primarily served；Using the one of stratification
Body designs, and power supply can be connected and be managed system and be combined, while ensure being effectively isolated between cover board and battery.Wherein, institute
State the correlation function that light current layer 412 is mainly responsible for battery management system；The forceful electric power layer 413 be mainly responsible for general supply charging and
Input, the shielded layer 414 is used to avoid battery and forceful electric power layer contacts directly, and avoids the occurrence of the accidents such as battery short circuit.
The cover layer 411 is provided with battery forceful electric power interface (positive pole 42 and power cathode 43), data monitoring interface
44th, for the screw hole 41 of fixing Battery case and for ensureing each single cell terminal post and cover board corresponding position touch-safe
Insulation sleeve 5, the insulation sleeve 5 are mounted on the pole of battery.Temperature sensor 62 is provided in the honeycomb slot 61, is used for
Monitor temperature.
As described above, is only presently preferred embodiments of the present invention, when the scope implemented of the present invention cannot be limited with this,
The simple equivalent changes and modifications made generally according to scope of the present invention patent and invention description content, all still belongs to this hair
In the range of bright patent covers.
Claims (5)
1. a kind of single battery of hexagonal honeycomb structure, it is characterised in that：Including at least one battery, battery tray and heat management
It manages, sets mounting groove in the battery tray, the battery is installed in the mounting groove of the battery tray, is opened in the battery tray side
Equipped with for installing the placing groove of heat management pipe, the heat management pipe is clamped on described through the placing groove and by the battery
In mounting groove.
2. a kind of single battery of hexagonal honeycomb structure according to claim 1, it is characterised in that：The mounting groove is minimum
Two batteries are placed, the battery tray sets to place the placement of heat management pipe compared with centrosymmetric both sides
Slot, the heat management pipe are installed in the placing groove and battery are clamped in the mounting groove.
3. a kind of single battery of hexagonal honeycomb structure according to claim 2, it is characterised in that：The heat management pipe
The pipeline made of aluminium alloy, to be flat, pipe ends are provided with coolant connection.
4. a kind of single battery of hexagonal honeycomb structure according to claim 1, it is characterised in that：The heat management pipe
Heat conduction epoxy glue is additionally provided between the battery.
5. a kind of single battery of hexagonal honeycomb structure according to claim 4, it is characterised in that：The heat management be by
Pipeline made of aluminium alloy, is flat, pipeline wall thickness 1mm, and outer diameter tube overall width is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397381.1A CN108091801B (en) | 2017-12-21 | 2017-12-21 | Monomer battery with hexagonal honeycomb structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397381.1A CN108091801B (en) | 2017-12-21 | 2017-12-21 | Monomer battery with hexagonal honeycomb structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108091801A true CN108091801A (en) | 2018-05-29 |
| CN108091801B CN108091801B (en) | 2024-04-19 |
Family
ID=62178045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397381.1A Active CN108091801B (en) | 2017-12-21 | 2017-12-21 | Monomer battery with hexagonal honeycomb structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108091801B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676410A (en) * | 2019-10-12 | 2020-01-10 | 北京理工大学 | A lightweight multifunctional structure for laminate polymer battery module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005285456A (en) * | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | Power supply apparatus |
| JP2011049013A (en) * | 2009-08-26 | 2011-03-10 | Sanyo Electric Co Ltd | Battery pack |
| JP2012243535A (en) * | 2011-05-18 | 2012-12-10 | Sanyo Electric Co Ltd | Battery pack |
| CN104319431A (en) * | 2014-10-17 | 2015-01-28 | 广东亿纬赛恩斯新能源系统有限公司 | Battery module and cooling method thereof |
| CN104916880A (en) * | 2015-06-18 | 2015-09-16 | 安徽江淮松芝空调有限公司 | Water cooling device for electric vehicle batteries |
| JP2016207569A (en) * | 2015-04-27 | 2016-12-08 | パナソニックＩｐマネジメント株式会社 | Battery holder and battery pack having the same |
| CN106374163A (en) * | 2016-11-07 | 2017-02-01 | 珠海格力电器股份有限公司 | Thermal management system for batteries |
| CN206210865U (en) * | 2016-08-10 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN106921006A (en) * | 2017-04-24 | 2017-07-04 | 西安科技大学 | A kind of battery thermostat and system |
| DE102016206463A1 (en) * | 2016-04-18 | 2017-10-19 | Bayerische Motoren Werke Aktiengesellschaft | SUPPORT FOR BATTERY CELLS, BATTERY MODULE, STORAGE BATTERY AND VEHICLE |
| CN207834386U (en) * | 2017-12-21 | 2018-09-07 | 广东技术师范学院 | A kind of single battery of hexagonal honeycomb structure |
-
2017
- 2017-12-21 CN CN201711397381.1A patent/CN108091801B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005285456A (en) * | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | Power supply apparatus |
| JP2011049013A (en) * | 2009-08-26 | 2011-03-10 | Sanyo Electric Co Ltd | Battery pack |
| JP2012243535A (en) * | 2011-05-18 | 2012-12-10 | Sanyo Electric Co Ltd | Battery pack |
| CN104319431A (en) * | 2014-10-17 | 2015-01-28 | 广东亿纬赛恩斯新能源系统有限公司 | Battery module and cooling method thereof |
| JP2016207569A (en) * | 2015-04-27 | 2016-12-08 | パナソニックＩｐマネジメント株式会社 | Battery holder and battery pack having the same |
| CN104916880A (en) * | 2015-06-18 | 2015-09-16 | 安徽江淮松芝空调有限公司 | Water cooling device for electric vehicle batteries |
| DE102016206463A1 (en) * | 2016-04-18 | 2017-10-19 | Bayerische Motoren Werke Aktiengesellschaft | SUPPORT FOR BATTERY CELLS, BATTERY MODULE, STORAGE BATTERY AND VEHICLE |
| CN206210865U (en) * | 2016-08-10 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of electric automobile chassis structure |
| CN106374163A (en) * | 2016-11-07 | 2017-02-01 | 珠海格力电器股份有限公司 | Thermal management system for batteries |
| CN106921006A (en) * | 2017-04-24 | 2017-07-04 | 西安科技大学 | A kind of battery thermostat and system |
| CN207834386U (en) * | 2017-12-21 | 2018-09-07 | 广东技术师范学院 | A kind of single battery of hexagonal honeycomb structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676410A (en) * | 2019-10-12 | 2020-01-10 | 北京理工大学 | A lightweight multifunctional structure for laminate polymer battery module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108091801B (en) | 2024-04-19 |
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Address after: No. 293, Zhongshan Avenue West, Tianhe District, Guangzhou, Guangdong 510630 Patentee after: GUANGDONG POLYTECHNIC NORMAL University Country or region after: China Address before: 510000, No. 576 Shilongkou West Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG POLYTECHNIC NORMAL University Country or region before: China |