CN109671901A - The apparatus for baking of electrodes of lithium-ion batteries - Google Patents
The apparatus for baking of electrodes of lithium-ion batteries Download PDFInfo
- Publication number
- CN109671901A CN109671901A CN201710955257.6A CN201710955257A CN109671901A CN 109671901 A CN109671901 A CN 109671901A CN 201710955257 A CN201710955257 A CN 201710955257A CN 109671901 A CN109671901 A CN 109671901A
- Authority
- CN
- China
- Prior art keywords
- roller
- pole piece
- drained
- casing
- degree
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract 12
- 238000000034 method Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明公开了锂离子电池极片的烘烤装置，其两侧分别设置辊压机和收卷机，其包括壳体、设置在所述壳体内的加热组件、上排过度辊以及下排过度辊，所述上排过度辊和下排过度辊错位设置并且分别位于壳体内的上下两侧；本发明极片经辊压机进入壳体的加热组件中，呈蛇形穿过上排过度辊以及下排过度辊进行烘烤，最后经收卷机进行收卷，在烘烤的过程中，一上一下能更好的释放极片因烘烤产生的应力。
The invention discloses a baking device for a pole piece of a lithium ion battery. A roller press and a winder are respectively arranged on both sides of the device. The device includes a casing, a heating assembly arranged in the casing, an upper row of transition rollers and a lower row of transition rollers. The upper row of transition rollers and the lower row of transition rollers are dislocated and located on the upper and lower sides of the casing respectively; the pole piece of the present invention enters the heating assembly of the casing through the roller press, and passes through the upper row of transition rollers in a serpentine shape. And the lower row of excessive rollers are baked, and finally rolled by the winder. During the baking process, one up and down can better release the stress of the pole pieces caused by baking.
Description
Technical field
The invention belongs to technical field of lithium-ion battery, and in particular to the apparatus for baking of electrodes of lithium-ion batteries.
Background technique
Moisture control is most important in lithium ion battery manufacturing process, it is therefore desirable to toast to raw material.
Pole piece is the important component of lithium ion battery, plays critical effect, battery to the properties of battery
The superiority and inferiority of pole piece directly determines the quality of battery, and apparatus for baking is the important setting for guaranteeing quality of battery pole piece, existing baking
Device pole piece when toasting pole piece is in stationary state, be easy to cause pole piece stress excessive and toasts non-uniform problem.
Summary of the invention
The object of the present invention is to provide the apparatus for baking of electrodes of lithium-ion batteries, by above degree of being drained through roller and under degree of being drained through
Mutual cooperation between roller toasts the serpentine-like heating component that passes through of pole piece, solves existing apparatus for baking and pole piece is caused to answer
Power is excessive and toasts non-uniform problem.
The technical scheme adopted by the invention is that roll-in is respectively set in the apparatus for baking of electrodes of lithium-ion batteries, two sides
Machine and winder comprising shell, setting the intracorporal heating component of the shell, on degree of being drained through roller and under degree of being drained through roller, institute
Degree of being drained through roller degree of being drained through roller under is stated to shift to install and be located at the intracorporal two sides up and down of shell.
The features of the present invention also characterized in that
The heating component includes at least two pipelines being set side by side, it is described on roller in degree of being drained through roller it is respectively arranged
The pipeline inner top, it is described under roller in degree of being drained through roller be separately positioned between two adjacent pipelines forming region just
Lower section.
The heating component further comprises the lower steam channel for being passed through steam to pipeline inside, and the lower steam is logical
Under road is located at below degree of being drained through roller.
The heating component further comprises for being passed through described in the upper steam channel of steam between the adjacent pipeline
Upper steam channel is located above above degree of being drained through roller.
It further comprise temperature sensor and temperature indicator, the temperature sensor is arranged in shell and is at least arranged
Two, the temperature indicator is arranged in hull outside, and the temperature sensor is connected with temperature indicator.
It further comprise the first support roller and the second support roller, first support roller is arranged in shell close to roll squeezer
Side, second support roller be arranged in shell close to winder side.
The lower steam channel and upper steam channel all extend to outside shell.
The part that the lower steam channel and upper steam channel extend to outside shell is provided with valve.
The shell two sides are provided with the first notch penetrated for pole piece and the second notch being pierced by for pole piece, described
The setting of first support roller is arranged in the first indentation, there, second support roller in the second indentation, there.
Compared with prior art, serpentine-like in the use of the present invention, pole piece enters in the heating component of shell through roll squeezer
Across above degree of being drained through roller and under degree of being drained through roller toasted, last rolling machine is wound, during baking, on one
The stress that pole piece is generated by baking once can be preferably discharged, pole piece rebounds inconsistent problem after improving roll-in, can make pole piece
Before assembly carry out effectively uniformly rebound, reduce pole piece after mounting and chemical conversion when pole piece rebound thickness, effectively increase pole piece
The consistency of thickness.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the apparatus for baking that the embodiment of the present invention 1 provides electrodes of lithium-ion batteries；
Fig. 2 is the structural schematic diagram for the apparatus for baking that the embodiment of the present invention 2 provides electrodes of lithium-ion batteries；
Fig. 3 is the structural schematic diagram for the apparatus for baking that the embodiment of the present invention 3 provides electrodes of lithium-ion batteries；
Fig. 4 is the structural schematic diagram for the apparatus for baking that the embodiment of the present invention 4 provides electrodes of lithium-ion batteries.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention 1 provides the apparatus for baking of electrodes of lithium-ion batteries, as shown in Figure 1, roller is respectively set in its two sides
Press 1 and winder 2, which is characterized in that it include shell 3, the heating component being arranged in shell 34, on degree of being drained through roller 5 with
Degree of being drained through roller 6 under and, above degree of the being drained through roller 6 under of degree of being drained through roller 5 shifts to install and is located at the two sides up and down in shell 3,
In this way, pole piece through roll squeezer 1 enter shell 3 heating component 4 in, it is serpentine-like pass through above degree of being drained through roller 5 and under degree of being drained through roller 6
It is toasted, last rolling machine 2 is wound.
It further comprise temperature sensor 7 and temperature indicator 8, temperature sensor 7 is arranged in shell 3 and is at least arranged
Two, the setting of temperature indicator 8 is in 3 outside of shell, and temperature sensor 7 and temperature indicator 8 connect, in this way, temperature sensor 7
Temperature in real-time monitoring shell 3, and by temperature display on temperature indicator 8.
It further comprise the first support roller 9 and the second support roller 10, the first support roller 9 is arranged in shell 3 close to roll-in
The side in shell 3 close to winder 2 is arranged in the side of machine 1, the second support roller 10, in this way, passing through the first support roller 9 and the
Two support rollers 10 avoid pole piece and directly connect and damage to pole piece with roll squeezer 1 and winder 2.
On degree of being drained through roller 5 and under degree of being drained through roller 6 include at least two rollers, in this way, pole piece is through above degree of being drained through roller 5 and lower row
Excessive roller 6 is toasted, and can preferably discharge pole piece one on the other because toasting the stress generated one on the other.
The embodiment of the present invention 2 provides the apparatus for baking of another electrodes of lithium-ion batteries, as shown in Fig. 2, its two sides is distinguished
Roll squeezer 1 and winder 2 are set, which is characterized in that it include shell 3, the heating component being arranged in shell 34, on degree of being drained through
Roller 5 and under degree of being drained through roller 6, above degree of being drained through roller 5 and under degree of being drained through roller 6 shift to install and be located in shell 3 up and down
Two sides, in this way, pole piece through roll squeezer 1 enter shell 3 heating component 4 in, it is serpentine-like pass through above degree of being drained through roller 5 and under be drained through
Degree roller 6 is toasted, and last rolling machine 2 is wound.
It further comprise temperature sensor 7 and temperature indicator 8, temperature sensor 7 is arranged in shell 3 and is at least arranged
Two, the setting of temperature indicator 8 is in 3 outside of shell, and temperature sensor 7 and temperature indicator 8 connect, in this way, temperature sensor 7
Temperature in real-time monitoring shell 3, and by temperature display on temperature indicator 8.
It further comprise the first support roller 9 and the second support roller 10, the first support roller 9 is arranged in shell 3 close to roll-in
The side in shell 3 close to winder 2 is arranged in the side of machine 1, the second support roller 10, in this way, passing through the first support roller 9 and the
Two support rollers 10 avoid pole piece and directly connect and damage to pole piece with roll squeezer 1 and winder 2.
On degree of being drained through roller 5 and under degree of being drained through roller 6 include at least two rollers, in this way, pole piece is through above degree of being drained through roller 5 and lower row
Excessive roller 6 is toasted, and can preferably discharge the stress that pole piece is generated by baking one on the other.
Heating component 4 includes at least two pipelines 41 being set side by side, above the respectively arranged pipeline of roller in degree of being drained through roller 5
41 inner tops, under roller in degree of being drained through roller 6 be separately positioned on the underface of forming region between two adjacent channels 41, in this way,
Some roller under pole piece successively passes through in degree of being drained through roller 6, on some roller in degree of being drained through roller 5, under some in degree of being drained through roller 6
Roller so recycles, and in the same pipeline 41 one on the other, preferably releases the stress of pole piece generation.
The embodiment of the present invention 3 provides the apparatus for baking of another electrodes of lithium-ion batteries, as shown in figure 3, its two sides is distinguished
Roll squeezer 1 and winder 2 are set, which is characterized in that it include shell 3, the heating component being arranged in shell 34, on degree of being drained through
Roller 5 and under degree of being drained through roller 6, above degree of being drained through roller 5 and under degree of being drained through roller 6 shift to install and be located in shell 3 up and down
Two sides, in this way, pole piece through roll squeezer 1 enter shell 3 heating component 4 in, it is serpentine-like pass through above degree of being drained through roller 5 and under be drained through
Degree roller 6 is toasted, and last rolling machine 2 is wound.
It further comprise temperature sensor 7 and temperature indicator 8, temperature sensor 7 is arranged in shell 3 and is at least arranged
Two, the setting of temperature indicator 8 is in 3 outside of shell, and temperature sensor 7 and temperature indicator 8 connect, in this way, temperature sensor 7
Temperature in real-time monitoring shell 3, and by temperature display on temperature indicator 8.
It further comprise the first support roller 9 and the second support roller 10, the first support roller 9 is arranged in shell 3 close to roll-in
The side in shell 3 close to winder 2 is arranged in the side of machine 1, the second support roller 10, in this way, passing through the first support roller 9 and the
Two support rollers 10 avoid pole piece and directly connect and damage to pole piece with roll squeezer 1 and winder 2.
On degree of being drained through roller 5 and under degree of being drained through roller 6 include at least two rollers, in this way, pole piece is through above degree of being drained through roller 5 and lower row
Excessive roller 6 is toasted, and can preferably discharge the stress that pole piece is generated by baking one on the other.
Heating component 4 includes at least two pipelines 41 being set side by side, above the respectively arranged pipeline of roller in degree of being drained through roller 5
41 inner tops, under roller in degree of being drained through roller 6 be separately positioned on the underface of forming region between two adjacent channels 41, in this way,
Some roller under pole piece successively passes through in degree of being drained through roller 6, on some roller in degree of being drained through roller 5, under some in degree of being drained through roller 6
Roller so recycles, and in the same pipeline 41 one on the other, preferably releases the stress of pole piece generation.
Heating component 4 further comprises for the lower steam channel 42 for being passed through steam inside pipeline 41, lower steam channel
42 be located under the lower section of degree of being drained through roller 6, in this way, steam is discharged into inside pipeline 41 by lower steam channel 42, by steam to pole
Piece is toasted, and has better cured effect.
The embodiment of the present invention 4 provides the apparatus for baking of another electrodes of lithium-ion batteries, as shown in figure 4, its two sides is distinguished
Roll squeezer 1 and winder 2 are set, which is characterized in that it include shell 3, the heating component being arranged in shell 34, on degree of being drained through
Roller 5 and under degree of being drained through roller 6, above degree of being drained through roller 5 and under degree of being drained through roller 6 shift to install and be located in shell 3 up and down
Two sides, in this way, pole piece through roll squeezer 1 enter shell 3 heating component 4 in, it is serpentine-like pass through above degree of being drained through roller 5 and under be drained through
Degree roller 6 is toasted, and last rolling machine 2 is wound.
On degree of being drained through roller 5 and under degree of being drained through roller 6 shift to install expression: above first roller in degree of being drained through roller 5 and second
Roller is set side by side, then down in degree of being drained through roller 6 corresponding roller be arranged between first roller and second roller in degree of being drained through roller 5
The lower end in gap.
It further comprise temperature sensor 7 and temperature indicator 8, temperature sensor 7 is arranged in shell 3 and is at least arranged
Two, the setting of temperature indicator 8 is in 3 outside of shell, and temperature sensor 7 and temperature indicator 8 connect, in this way, temperature sensor 7
Temperature in real-time monitoring shell 3, and by temperature display on temperature indicator 8.
It further comprise the first support roller 9 and the second support roller 10, the first support roller 9 is arranged in shell 3 close to roll-in
The side in shell 3 close to winder 2 is arranged in the side of machine 1, the second support roller 10, in this way, passing through the first support roller 9 and the
Two support rollers 10 avoid pole piece and directly connect and damage to pole piece with roll squeezer 1 and winder 2.
On degree of being drained through roller 5 and under degree of being drained through roller 6 include at least two rollers, in this way, pole piece is through above degree of being drained through roller 5 and lower row
Excessive roller 6 is toasted, and can preferably discharge the stress that pole piece is generated by baking one on the other.
Heating component 4 includes at least two pipelines 41 being set side by side, above the respectively arranged pipeline of roller in degree of being drained through roller 5
41 inner tops, under roller in degree of being drained through roller 6 be separately positioned on the underface of forming region between two adjacent channels 41, in this way,
Some roller under pole piece successively passes through in degree of being drained through roller 6, on some roller in degree of being drained through roller 5, under some in degree of being drained through roller 6
Roller so recycles, and in the same pipeline 41 one on the other, preferably releases the stress of pole piece generation.
Heating component 4 further comprises for the lower steam channel 42 for being passed through steam inside pipeline 41, lower steam channel
42 be located under the lower section of degree of being drained through roller 6, heating component 4 further comprises for the upper steam for being passed through steam between adjacent channel 41
Steam channel 43 is located above 5 top of degree of being drained through roller on channel 43, in this way, will be steamed by lower steam channel 42 and upper steam channel 43
Vapour is discharged between 41 inside of pipeline and pipeline 41, is toasted by steam to pole piece, has better cured effect, separately
Outside, it is passed through steam simultaneously up and down, makes to toast more uniform.
Lower steam channel 42 and upper steam channel 43 all extend to outside shell 3, lower steam channel 42 and upper steam channel 43
The part extended to outside shell 3 is provided with valve 421, in this way, controlling the intake of steam by valve 421 to guarantee to heat
The temperature of component 4.
3 two sides of shell are provided with the first notch 31 penetrated for pole piece and the second notch 32 being pierced by for pole piece, and
One support roller 9 is arranged at the first notch 31, and the second support roller 10 is arranged at the second notch 32, in this way, passing through the first notch
31 are connected to roll squeezer 1, winder 2 and shell 3 with the second notch 32, unreeling, toast and winding convenient for pole piece.
In addition, the invention also includes temperature control unit, the temperature control unit respectively with temperature indicator 8 and valve
Temperature in shell 3 is transferred to temperature control unit by 421 connections, temperature indicator 8, and temperature control unit is according to the temperature
Turning on or off for control valve 421, realizes temperature automatic control, improves efficiency, has saved cost.
The course of work: as shown in phantom in Figure 4, pole piece successively enters through roll squeezer 1, the first notch 31, the first support roller 9
In heating component 4, in heating component 4, some roller under successively passing through in degree of being drained through roller 6, on some roller in degree of being drained through roller 5,
Under some roller in degree of being drained through roller 6, so recycle, it is serpentine-like to pass through all heating components 4 and toasted, most afterwards through the second support
Roller 10 and the second notch 32 are pierced by shell 3, are wound by winder 2, wherein during baking, will pass through regulating valve
Door 421 by temperature control between 90-180 DEG C, temperature sensor 7 detect the intracorporal temperature of shell and be reflected in real time temperature show
Show that it on 8, is just observed with staff to decide whether to turn on or off valve 421.
Compared with prior art, serpentine-like in the use of the present invention, pole piece enters in the heating component of shell through roll squeezer
Across above degree of being drained through roller and under degree of being drained through roller toasted, last rolling machine is wound, during baking, on one
The stress that pole piece is generated by baking once can be preferably discharged, pole piece rebounds inconsistent problem after improving roll-in, can make pole piece
Before assembly carry out effectively uniformly rebound, reduce pole piece after mounting and chemical conversion when pole piece rebound thickness, effectively increase pole piece
The consistency of thickness.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955257.6A CN109671901B (en) | 2017-10-13 | 2017-10-13 | Baking device for lithium ion battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710955257.6A CN109671901B (en) | 2017-10-13 | 2017-10-13 | Baking device for lithium ion battery pole piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109671901A true CN109671901A (en) | 2019-04-23 |
| CN109671901B CN109671901B (en) | 2023-12-01 |
Family
ID=66138995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710955257.6A Active CN109671901B (en) | 2017-10-13 | 2017-10-13 | Baking device for lithium ion battery pole piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109671901B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206073623U (en) * | 2016-10-08 | 2017-04-05 | 威海三合永新能源科技有限公司 | A kind of apparatus for baking during the roll-in for super-capacitor pole piece |
| CN206464157U (en) * | 2017-01-23 | 2017-09-05 | 合肥国轩高科动力能源有限公司 | Lithium battery pole piece coating machine |
| CN207441853U (en) * | 2017-10-13 | 2018-06-01 | 银隆新能源股份有限公司 | A kind of apparatus for baking of electrodes of lithium-ion batteries |
-
2017
- 2017-10-13 CN CN201710955257.6A patent/CN109671901B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206073623U (en) * | 2016-10-08 | 2017-04-05 | 威海三合永新能源科技有限公司 | A kind of apparatus for baking during the roll-in for super-capacitor pole piece |
| CN206464157U (en) * | 2017-01-23 | 2017-09-05 | 合肥国轩高科动力能源有限公司 | Lithium battery pole piece coating machine |
| CN207441853U (en) * | 2017-10-13 | 2018-06-01 | 银隆新能源股份有限公司 | A kind of apparatus for baking of electrodes of lithium-ion batteries |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109671901B (en) | 2023-12-01 |
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Address after: 16 Jinhu Road, Sanzao Town, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Gree titanium new energy Co.,Ltd. Country or region after: China Address before: No. 16 Jinhu Road, Jinwan District, Zhuhai City, Guangdong Province Patentee before: YINLONG ENERGY Co.,Ltd. Country or region before: China |
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