CN105914324A - Consumer battery diaphragm - Google Patents
Consumer battery diaphragm Download PDFInfo
- Publication number
- CN105914324A CN105914324A CN201610302346.6A CN201610302346A CN105914324A CN 105914324 A CN105914324 A CN 105914324A CN 201610302346 A CN201610302346 A CN 201610302346A CN 105914324 A CN105914324 A CN 105914324A
- Authority
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- China
- Prior art keywords
- battery diaphragm
- phase change
- glass fibre
- modified layer
- preparation
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- 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.)
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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
Abstract
The invention provides a consumer battery diaphragm. The consumer battery diaphragm comprises a base layer (1) and a modification layer (2) arranged on the surface of the base layer (1), wherein the base layer (1) is a glass fiber and polyvinyl alcohol fiber composite layer; the modification layer (2) comprises a polypropylene material matrix (3) as well as porous alumina ultrafine powder (4), ceramic particles (5) and phase change microspheres (5) which are dispersed in the polypropylene material matrix (3). The battery diaphragm has the advantages of simple process, high liquid absorption amount, great surface area, high porosity, small aperture, high chemical purity, fewer harmful impurities and safety in use.
Description
Technical field
The present invention be more particularly directed to a kind of consumer battery diaphragm, belong to battery material technical field.
Background technology
Battery separator paper is as separating positive pole and the diaphragm material of negative pole in battery, Main Function is to prevent positive negative electricity in battery
The most directly contact and short-circuit, and can allow the ion in electrolyte passes freely through between both positive and negative polarity and electronics can not freely be worn
Crossing, among the various piece of composition battery, diaphragm material plays the important and pivotal role, and its performance determines battery
Interfacial structure, internal resistance etc., directly affect the characteristics such as the capacity of battery, cycle performance.The barrier film of excellent performance is to raising
The combination property of battery has important effect.
At present, battery diaphragm is mainly polyalkene diaphragm, and it has sufficiently small aperture and can effectively prevent inside battery short
Road, and there is preferable uniformity, the charge-discharge performance of battery can be effectively ensured.But in application process, if battery
Owing to internal short-circuit or overcharge etc. causes thermal runaway, internal temperature of battery raises rapidly, and polyolefin film is at high temperature
(higher than 170 DEG C) cannot ensure its integrity, makes positive and negative pole material occurrence of large-area contact, causes battery explosion,
Safety to battery constitutes a threat to.Particularly in lithium-ion-power cell, the design of the high-power discharge and recharge of Large Copacity is wanted
Barrier film is asked to have more preferable resistance to elevated temperatures.It addition, polyalkene diaphragm breathability is poor, it is impossible to meet battery very well quick
The needs of discharge and recharge, affect the service life cycle of battery.
Summary of the invention
Technical problem: in order to solve the defect of prior art, the invention provides a kind of consumer battery diaphragm.
Technical scheme: the consumer battery diaphragm of one that the present invention provides, including
Basic unit (1), described basic unit (1) is glass fibre and vinal composite bed；
It is located at the modified layer (2) on basic unit (1) surface；Described modified layer (2) include polypropylene material matrix (3) and
Woelm Alumina superfines (4), ceramic particle (5) and the phase change microsphere being scattered in polypropylene material matrix (3)
(5)；
Described phase change microsphere (5) is made up of the component of following weight portion: chlorinated paraffin 40-60 part, glyceryl monostearate
1-2 part, dodecylbenzene sodium sulfonate 1-3 part, ethylene glycol terephthalate 8-12 part, 2-acrylamido-2-methyl
Propane sulfonic acid 4-6 part, dimethylamino ethyl acrylate 4-6 part, p-phthalic acid 1-3 part, graphite 1-3 part, titanium dioxide
Silicon 2-4 part, sal glauberi 20-40 part, ammonium sulfate 10-20 part, sodium bisulfate 5-10 part, carborundum 1-3 part,
Silicon nitride 1-3 part, gelatin 20-30 part；
The mass ratio of described Woelm Alumina superfines (4), ceramic particle (5) and phase change microsphere (5) is (2-4):
10:(1-3).
As improvement, glass fibre is with vinal composite bed, and glass fibre with the mass ratio of polyvinyl alcohol is
(1-3):1。
Present invention also offers the preparation method of a kind of consumer battery diaphragm, comprise the following steps:
(1) under conditions of pH1-2, adding glass fibre dispersion, continuous stirring prevents wadding poly-；Add polyvinyl alcohol
Fiber, dispersed with stirring is uniform, obtains composite fibre slurry；Composite fibre slurry is caused wet web, then wet web is entered
Row dried, obtains glass fibre and vinal composite bed；
(2) preparation of phase change microsphere: by graphite, silicon dioxide, sal glauberi, ammonium sulfate, sodium bisulfate, carbonization
Silicon, silicon nitride mix, and add in the water of 3-5 times of quality and dissolve, obtain mixed aqueous solution；Heating chlorinated paraffin extremely melts,
It is sequentially added into glyceryl monostearate, dodecylbenzene sodium sulfonate, ethylene glycol terephthalate, 2-acrylamido-2-
Methyl propane sulfonic acid, dimethylamino ethyl acrylate, p-phthalic acid, stir 20-40min, obtain organic mixture；Will be molten
The organic mixture melted adds in the mixed aqueous solution of temperature 70-90 DEG C, obtains oil hydrosol；Above-mentioned oil hydrosol is poured into
In the brine ice that temperature is-20 DEG C～10 DEG C, sieve, obtain phase change microsphere；
(3) preparation of modified layer: Woelm Alumina superfines, ceramic particle and phase change microsphere are mixed, adds melted
Polypropylene material in, stir 5-15min, obtain modified layer material；
(4) the modified layer material of step (3) is coated on glass fibre and vinal composite bed, must disappear
Take class battery diaphragm.
In step (3), the mass ratio of described high molecular polymer and deionized water is 0.5～30:100, the temperature of heating in water bath
Degree is 25～95 DEG C, and the time of heating in water bath is 2～12 hours.
Beneficial effect: battery diaphragm technique of the present invention is simple, liquid absorption is high, surface area is big, porosity is high, aperture is little,
Chemical purity is high, objectionable impurities is few, uses safety.
The present invention is by glass fiber applications in the manufacture of battery separator paper, and the battery diaphragm of production, its performance will be better than
General battery separator paper, as liquid absorption is higher, faster, hydrophilic is more preferable for rate of liquid aspiration, and in their entire life
Keep the pick up that it is high；Simultaneously as fibreglass diaphragm has surface area greatly, porosity is high, and aperture is little, chemistry
Purity is high, and objectionable impurities is few, and the feature such as extraordinary acid resistance, non-oxidizability and little resistance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the consumer battery diaphragm of the present invention.
Detailed description of the invention
Embodiment 1
Consumer battery diaphragm, is shown in Fig. 1, including
Basic unit 1, described basic unit 1 is glass fibre and vinal composite bed；
It is located at the modified layer 2 on basic unit 1 surface；Described modified layer 2 includes polypropylene material matrix 3 and is scattered in poly-third
Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 in alkene material matrix 3；
Described phase change microsphere 5 is made up of the component of following weight portion: chlorinated paraffin 40 parts, glyceryl monostearate 2 parts,
Dodecylbenzene sodium sulfonate 1 part, ethylene glycol terephthalate 12 parts, 2-acrylamide-2-methylpro panesulfonic acid 4 parts,
Dimethylamino ethyl acrylate 6 parts, p-phthalic acid 1 part, 3 parts of graphite, silicon dioxide 2 parts, sal glauberi 20
Part, 10 parts of ammonium sulfate, sodium bisulfate 10 parts, carborundum 3 parts, silicon nitride 1 part, 20 parts of gelatin；
The mass ratio of described Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 is 2:10:3.
The preparation method of the consumer battery diaphragm of above-mentioned kind, comprises the following steps:
(1) under conditions of pH1-2, adding glass fibre dispersion, continuous stirring prevents wadding poly-；Add polyethylene
Alcohol fiber, dispersed with stirring is uniform, obtains composite fibre slurry；Composite fibre slurry is caused wet web, then by wet web
It is dried process, obtains glass fibre and vinal composite bed；Glass fibre and the quality of vinal
Ratio is 3:1；
(2) preparation of phase change microsphere: by graphite, silicon dioxide, sal glauberi, ammonium sulfate, sodium bisulfate, carbonization
Silicon, silicon nitride mix, and add in the water of 3 times of quality and dissolve, obtain mixed aqueous solution；Heating chlorinated paraffin, to melting, depends on
Secondary addition glyceryl monostearate, dodecylbenzene sodium sulfonate, ethylene glycol terephthalate, 2-acrylamido-2-
Methyl propane sulfonic acid, dimethylamino ethyl acrylate, p-phthalic acid, stir 20min, obtain organic mixture；Will be melted
Organic mixture add temperature 90 DEG C mixed aqueous solution in, obtain oil hydrosol；Above-mentioned oil hydrosol is poured into temperature
It is in the brine ice of 10 DEG C, sieves, obtain phase change microsphere；
(3) preparation of modified layer: Woelm Alumina superfines, ceramic particle and phase change microsphere are mixed, adds melted
Polypropylene material in, stir 5min, obtain modified layer material；Described high molecular polymer and the mass ratio of deionized water
For 0.5:100, the temperature of heating in water bath is 25 DEG C, and the time of heating in water bath is 2 hours；
(4) the modified layer material of step (2) is coated on glass fibre and vinal composite bed, must disappear
Take class battery diaphragm.
Embodiment 2
Consumer battery diaphragm, is shown in Fig. 1, including
Basic unit 1, described basic unit 1 is glass fibre and vinal composite bed；
It is located at the modified layer 2 on basic unit 1 surface；Described modified layer 2 includes polypropylene material matrix 3 and is scattered in poly-third
Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 in alkene material matrix 3；
Described phase change microsphere 5 is made up of the component of following weight portion: chlorinated paraffin 60 parts, glyceryl monostearate 1 part,
Dodecylbenzene sodium sulfonate 3 parts, ethylene glycol terephthalate 8 parts, 2-acrylamide-2-methylpro panesulfonic acid 6 parts,
Dimethylamino ethyl acrylate 4 parts, p-phthalic acid 3 parts, 1 part of graphite, silicon dioxide 4 parts, sal glauberi 40
Part, 20 parts of ammonium sulfate, sodium bisulfate 5 parts, carborundum 1 part, silicon nitride 3 parts, 30 parts of gelatin；
The mass ratio of described Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 is 4:10:1.
The preparation method of the consumer battery diaphragm of above-mentioned kind, comprises the following steps:
(1) under conditions of pH1-2, adding glass fibre dispersion, continuous stirring prevents wadding poly-；Add polyethylene
Alcohol fiber, dispersed with stirring is uniform, obtains composite fibre slurry；Composite fibre slurry is caused wet web, then by wet web
It is dried process, obtains glass fibre and vinal composite bed；Glass fibre and the quality of vinal
Ratio is 1:1；
(2) preparation of phase change microsphere: by graphite, silicon dioxide, sal glauberi, ammonium sulfate, sodium bisulfate, carbonization
Silicon, silicon nitride mix, and add in the water of 5 times of quality and dissolve, obtain mixed aqueous solution；Heating chlorinated paraffin, to melting, depends on
Secondary addition glyceryl monostearate, dodecylbenzene sodium sulfonate, ethylene glycol terephthalate, 2-acrylamido-2-
Methyl propane sulfonic acid, dimethylamino ethyl acrylate, p-phthalic acid, stir 40min, obtain organic mixture；Will be melted
Organic mixture add temperature 70 C mixed aqueous solution in, obtain oil hydrosol；Above-mentioned oil hydrosol is poured into temperature
For in the brine ice of-20 DEG C, sieve, obtain phase change microsphere；
(3) preparation of modified layer: Woelm Alumina superfines, ceramic particle and phase change microsphere are mixed, adds melted
Polypropylene material in, stir 15min, obtain modified layer material；Described high molecular polymer and the mass ratio of deionized water
For 30:100, the temperature of heating in water bath is 95 DEG C, and the time of heating in water bath is 12 hours；
(4) the modified layer material of step (3) is coated on glass fibre and vinal composite bed, must disappear
Take class battery diaphragm.
Embodiment 3
Consumer battery diaphragm, is shown in Fig. 1, including
Basic unit 1, described basic unit 1 is glass fibre and vinal composite bed；
It is located at the modified layer 2 on basic unit 1 surface；Described modified layer 2 includes polypropylene material matrix 3 and is scattered in poly-third
Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 in alkene material matrix 3；
Described phase change microsphere 5 is made up of the component of following weight portion: chlorinated paraffin 50 parts, glyceryl monostearate 1.5 parts,
Dodecylbenzene sodium sulfonate 2 parts, ethylene glycol terephthalate 10 parts, 2-acrylamide-2-methylpro panesulfonic acid 5 parts,
Dimethylamino ethyl acrylate 5 parts, p-phthalic acid 2 parts, 2 parts of graphite, silicon dioxide 3 parts, sal glauberi 30
Part, 15 parts of ammonium sulfate, sodium bisulfate 8 parts, carborundum 2 parts, silicon nitride 2 parts, 25 parts of gelatin；
The mass ratio of described Woelm Alumina superfines 4, ceramic particle 5 and phase change microsphere 5 is 3:10:2.
The preparation method of above-mentioned consumer battery diaphragm, comprises the following steps:
(1) under conditions of pH1-2, adding glass fibre dispersion, continuous stirring prevents wadding poly-；Add polyethylene
Alcohol fiber, dispersed with stirring is uniform, obtains composite fibre slurry；Composite fibre slurry is caused wet web, then by wet web
It is dried process, obtains glass fibre and vinal composite bed；Glass fibre and the quality of vinal
Ratio is 2:1；
(2) preparation of phase change microsphere: by graphite, silicon dioxide, sal glauberi, ammonium sulfate, sodium bisulfate, carbonization
Silicon, silicon nitride mix, and add in the water of 4 times of quality and dissolve, obtain mixed aqueous solution；Heating chlorinated paraffin, to melting, depends on
Secondary addition glyceryl monostearate, dodecylbenzene sodium sulfonate, ethylene glycol terephthalate, 2-acrylamido-2-
Methyl propane sulfonic acid, dimethylamino ethyl acrylate, p-phthalic acid, stir 30min, obtain organic mixture；Will be melted
Organic mixture add temperature 80 DEG C mixed aqueous solution in, obtain oil hydrosol；Above-mentioned oil hydrosol is poured into temperature
For in the brine ice of-10 DEG C, sieve, obtain phase change microsphere；
(3) preparation of modified layer: Woelm Alumina superfines, ceramic particle and phase change microsphere are mixed, adds melted
Polypropylene material in, stir 10min, obtain modified layer material；In step (2), described high molecular polymer and going
The mass ratio of ionized water is 15:100, and the temperature of heating in water bath is 65 DEG C, and the time of heating in water bath is 6 hours；
(4) the modified layer material of step (3) is coated on glass fibre and vinal composite bed, must disappear
Take class battery diaphragm.
The consumer battery diaphragm performance that testing example 1 to 3 prepares, the results are shown in Table 1.
The consumer battery diaphragm performance that table 1 embodiment 1 to 3 prepares
By the test result of table 1 it can be seen that the vertical and horizontal thermal contraction of battery diaphragm of the present invention is significantly less than comparative example
In commercial battery barrier film, illustrate that the hot property of battery diaphragm of the present invention improves a lot；The imbibition of battery diaphragm of the present invention
Rate is much higher than commercial battery barrier film.
Claims (4)
1. a consumer battery diaphragm, it is characterised in that: include
Basic unit (1), described basic unit (1) is glass fibre and vinal composite bed；
It is located at the modified layer (2) on basic unit (1) surface；Described modified layer (2) include polypropylene material matrix (3) and
Woelm Alumina superfines (4), ceramic particle (5) and the phase transformation being scattered in polypropylene material matrix (3)
Microsphere (5)；
Described phase change microsphere (5) is made up of the component of following weight portion: chlorinated paraffin 40-60 part, glyceryl monostearate
1-2 part, dodecylbenzene sodium sulfonate 1-3 part, ethylene glycol terephthalate 8-12 part, 2-acrylamido-2-
Methyl propane sulfonic acid 4-6 part, dimethylamino ethyl acrylate 4-6 part, p-phthalic acid 1-3 part, graphite 1-3 part,
Silicon dioxide 2-4 part, sal glauberi 20-40 part, ammonium sulfate 10-20 part, sodium bisulfate 5-10 part, carbonization
Silicon 1-3 part, silicon nitride 1-3 part, gelatin 20-30 part；
The mass ratio of described Woelm Alumina superfines (4), ceramic particle (5) and phase change microsphere (5) is (2-4):
10:(1-3).
The preparation method of a kind of consumer battery diaphragm the most according to claim 1, it is characterised in that: glass fibre with
In vinal composite bed, glass fibre is (1-3) with the mass ratio of polyvinyl alcohol: 1.
3. the preparation method of a kind of consumer battery diaphragm described in claim 1 or 2, it is characterised in that: include following step
Rapid:
(1) under conditions of pH1-2, adding glass fibre dispersion, continuous stirring prevents wadding poly-；Add polyvinyl alcohol
Fiber, dispersed with stirring is uniform, obtains composite fibre slurry；Composite fibre slurry is caused wet web, then by l Water Paper
Width is dried process, obtains glass fibre and vinal composite bed；
(2) preparation of phase change microsphere: by graphite, silicon dioxide, sal glauberi, ammonium sulfate, sodium bisulfate, carbonization
Silicon, silicon nitride mix, and add in the water of 3-5 times of quality and dissolve, obtain mixed aqueous solution；Heating chlorinated paraffin is to melting
Change, be sequentially added into glyceryl monostearate, dodecylbenzene sodium sulfonate, ethylene glycol terephthalate, 2-propylene
Amide groups-2-methyl propane sulfonic acid, dimethylamino ethyl acrylate, p-phthalic acid, stir 20-40min, obtain organic
Mixture；Melted organic mixture is added in the mixed aqueous solution of temperature 70-90 DEG C, obtain oil hydrosol；By upper
State oil hydrosol to be poured in the brine ice that temperature is-20 DEG C～10 DEG C, sieve, obtain phase change microsphere；
(3) preparation of modified layer: Woelm Alumina superfines, ceramic particle and phase change microsphere are mixed, adds melted
Polypropylene material in, stir 5-15min, obtain modified layer material；
(4) the modified layer material of step (3) is coated on glass fibre and vinal composite bed, must disappear
Take class battery diaphragm.
The preparation method of a kind of consumer battery diaphragm the most according to claim 3, it is characterised in that: in step (2),
The mass ratio of described high molecular polymer and deionized water is 0.5～30:100, and the temperature of heating in water bath is 25～95 DEG C,
The time of heating in water bath is 2～12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302346.6A CN105914324B (en) | 2016-05-09 | 2016-05-09 | A kind of consumer battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302346.6A CN105914324B (en) | 2016-05-09 | 2016-05-09 | A kind of consumer battery diaphragm |
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| Publication Number | Publication Date |
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| CN105914324A true CN105914324A (en) | 2016-08-31 |
| CN105914324B CN105914324B (en) | 2018-07-10 |
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| CN201610302346.6A Active CN105914324B (en) | 2016-05-09 | 2016-05-09 | A kind of consumer battery diaphragm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994191A (en) * | 2017-11-15 | 2018-05-04 | 江苏华富储能新技术股份有限公司 | A kind of AGM partition plates for lead accumulator containing phase-changing energy storage material |
| CN113278310A (en) * | 2021-04-30 | 2021-08-20 | 惠州锂威新能源科技有限公司 | Composite ceramic particle and preparation method and application thereof |
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| CN103199209A (en) * | 2013-04-01 | 2013-07-10 | 中国海诚工程科技股份有限公司 | Non-woven ceramic membrane with excellent closed-pore performance for lithium ion battery and technology |
| CN105355824A (en) * | 2015-12-11 | 2016-02-24 | 北京新能源汽车股份有限公司 | Power battery diaphragm and preparation method thereof as well as power battery comprising power battery diaphragm |
| CN105514324A (en) * | 2016-02-02 | 2016-04-20 | 山东泰鹏环保材料股份有限公司 | PET non-woven cloth-based composite lithium ion battery diaphragm with nano aperture and preparation method of PET non-woven cloth-based composite lithium ion battery diaphragm |
-
2016
- 2016-05-09 CN CN201610302346.6A patent/CN105914324B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199209A (en) * | 2013-04-01 | 2013-07-10 | 中国海诚工程科技股份有限公司 | Non-woven ceramic membrane with excellent closed-pore performance for lithium ion battery and technology |
| CN105355824A (en) * | 2015-12-11 | 2016-02-24 | 北京新能源汽车股份有限公司 | Power battery diaphragm and preparation method thereof as well as power battery comprising power battery diaphragm |
| CN105514324A (en) * | 2016-02-02 | 2016-04-20 | 山东泰鹏环保材料股份有限公司 | PET non-woven cloth-based composite lithium ion battery diaphragm with nano aperture and preparation method of PET non-woven cloth-based composite lithium ion battery diaphragm |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994191A (en) * | 2017-11-15 | 2018-05-04 | 江苏华富储能新技术股份有限公司 | A kind of AGM partition plates for lead accumulator containing phase-changing energy storage material |
| CN113278310A (en) * | 2021-04-30 | 2021-08-20 | 惠州锂威新能源科技有限公司 | Composite ceramic particle and preparation method and application thereof |
| CN113278310B (en) * | 2021-04-30 | 2022-06-17 | 惠州锂威新能源科技有限公司 | Composite ceramic particle and preparation method and application thereof |
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| CN105914324B (en) | 2018-07-10 |
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Effective date of registration: 20190619 Address after: 225600 Dongting Lake Road Science and Technology Venture Center A2, Gaoyou Economic Development Zone, Yangzhou City, Jiangsu Province Co-patentee after: Jiangsu Huafu Storage New Technology Co., Ltd. Patentee after: Huafu (Jiangsu) Lithium Electricity New Technology Co., Ltd. Address before: 225600 Gaoyou Gaoyou Battery Industrial Park, Gaoyou Economic Development Zone, Yangzhou, Jiangsu Patentee before: Jiangsu Huafu Storage New Technology Co., Ltd. |
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