CN106910872B - A kind of positive plate of lead storage battery and preparation method thereof - Google Patents
A kind of positive plate of lead storage battery and preparation method thereof Download PDFInfo
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- CN106910872B CN106910872B CN201710047585.6A CN201710047585A CN106910872B CN 106910872 B CN106910872 B CN 106910872B CN 201710047585 A CN201710047585 A CN 201710047585A CN 106910872 B CN106910872 B CN 106910872B
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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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
- H01M10/06—Lead-acid accumulators
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
- H01M4/20—Processes of manufacture of pasted electrodes
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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- Manufacturing & Machinery (AREA)
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- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of positive plate of lead storage battery and preparation method thereof, belong to lead storage battery technical field.The lead plaster raw material of the positive plate includes lead powder, additive, water and sulfuric acid, the additive includes antimony oxide and stannous sulfate, the preparation of lead plaster is divided into two parts completion by the present invention, the additive of first part includes antimony oxide and stannous sulfate, it controls reaction temperature and is not more than 50 DEG C, prepare the first lead plaster containing 3BS, second part does not include above two additive, 80~85 DEG C of reaction temperature of control, prepare the second lead plaster containing 4BS, physical mixed is carried out again, so that containing a effective amount of 3BS and 4BS in anode diachylon simultaneously, performance of the battery in the early stage in terms of capacity and battery life is promoted simultaneously.The present invention avoids the conversion of 4BS and further increasing for partial size using the lead plaster mixing of medium temperature and curing process, effectively controls the partial size and content of 4BS in lead plaster, guarantees battery with two side terminals.
Description
Technical field
The present invention relates to lead storage battery technical fields, and in particular to a kind of positive plate of lead storage battery and preparation method thereof.
Background technique
Last decade is the stage of Chinese electric bicycle fast development, and electric bicycle ownership is at 200,000,000 or more so far,
Battery of electric bicycle has become one of most important application of lead storage battery.In lead storage battery production process, mixing paste conduct
The critical process of battery process, the quality of quality directly affect the service life and battery initial stage of the performance of battery, especially battery
Performance, and the initial performance of battery and battery life are directly related to the use demand of lead storage battery consumer.
With the continuous development of lead storage battery technology, the technology of preparing of the critical materials lead plaster of lead storage battery is manufactured also not
It is disconnected to update.The service life of power battery is the key factor of battery lead plaster design, and after using Pb-Ca-Sn-Al alloy, the longevity of battery
Life is shortened, and in order to increase the deeper cavity service life of battery, generally adds Sb in positive plate lead plaster2O3Or SnSO4, main purpose
It is to overcome non-antimony effect, improves the cycle life of battery.
In order to further increase the service life of battery, common way is formed by high temperature/cured high temperature when closing cream
The 4BS of certain content, to enhance the skeleton of positive active material to improve the service life of battery.But due to above two addition
Which kind of mode no matter the presence of agent use, 4BS skeleton be hardly formed in positive active material, cannot play and further increase
The purpose of battery life.
The patent document that Authorization Notice No. is 103762358 B of CN disclose a kind of lead-acid accumulator anode diachylon and
Preparation method, in anode diachylon add 4BS crystal seed, while use high temperature mixing paste technology (mixing paste temperature be maintained at 70 DEG C with
On time be not less than 5min), more promote 4BS play crystal seed effect, generate a large amount of 4BS, improve the recycling of battery
Service life.Traditional positive mixing paste temperature is controlled at 68 DEG C or so, temperature determine 3BS in the anode diachylon after solidifying and
The content of 4BS, mixing paste temperature are more than 70 DEG C and mainly generate 4BS, mainly generate 3BS lower than 60 DEG C, wherein 4BS determines battery
Service life, 3BS determines the performance of battery, the battery made using the temperature provided in the prior art still have compared with
Big defect.
The patent document that for another example application publication number is 106129357 A of CN is also disclosing a kind of addition 4BS crystal seed just
Pole lead paste formula, since the 4BS is generated after lead sulfate mud is mixed with lead oxide powder in the ball mill by collecting plate coating process
Grinding is made, and gives free rein to heat up in process of lapping, there is a problem of what the partial size of 4BS was difficult to control；In addition in mixing paste process temperature
Degree control is improved to 70-75 DEG C, promotes the increase of 4BS, and maximum temperature is improved to 68-70 DEG C in solidification process, the partial size of 4BS into
One step increases and is difficult to control, big 4BS easy to form, influences the effect and battery with two side terminals of chemical conversion.
Summary of the invention
The present invention provides a kind of preparation methods of positive plate of lead storage battery, overcome the positive plate activity of prior art preparation
The partial size of 4BS and content are difficult to control in substance, thus the problem of influencing battery performance.
A kind of preparation method of positive plate of lead storage battery, the lead plaster raw material of the positive plate include lead powder, additive, water and
Sulfuric acid, the additive include antimony oxide and stannous sulfate,
The preparation method comprises the following steps:
(1) in addition to antimony oxide and stannous sulfate, it is divided into two parts after remaining additive is mixed, and in first part
Middle addition whole antimony oxide and stannous sulfate, are not added in the second portion；
(2) by after part lead powder and first part's additives dry blended, add water-wet mixed, finally plus sulfuric acid is stirred to react, control
Reaction temperature is not more than 50 DEG C, obtains the first lead plaster；
(3) by after remaining lead powder and second part additives dry blended, add water-wet mixed, finally plus sulfuric acid is stirred to react, control
80~85 DEG C of reaction temperature, obtain the second lead plaster；
(4) the first lead plaster and the second lead plaster are mixed, obtains anode diachylon；
(5) coated plate, solidification, the cured temperature are no more than 55 DEG C.
The preparation of lead plaster is divided into two parts completion by the present invention, and first part is by lead powder and contains antimony oxide and sulfuric acid Asia
The additive and system of tin, while the reaction temperature no more than 50 DEG C is controlled, the first lead plaster is obtained, main group of the first lead plaster becomes
Tribasic lead sulfate crystals phase (3BS).Second part controls 80~85 DEG C of reaction temperature, becomes four alkali formulas to obtain main group
Second lead plaster of lead sulfate crystal phase (4BS) participates in not including antimony oxide and sulfuric acid in lead plaster and the additive of system at this time
Stannous is to overcome both additives to influence the defect that four basic lead sulphates are formed.
The present invention mixes the first lead plaster and the second lead plaster under conditions of relative low temperature, both contains in the anode diachylon of acquisition
There are the stannous sulfate and antimony oxide that can overcome non-antimony effect, while there is 3BS and 4BS, has not only improved the service life of battery, but also
It can guarantee the capacity at initial stage.Preferably, mixed temperature is 50-60 DEG C in step (4).
The present invention uses the mixing of medium temperature lead plaster and curing process no more than 55 DEG C, avoids occurring because of high temperature (being greater than 70 DEG C)
Lead to the conversion of 4BS and the further growth of 4BS partial size, the content of 3BS and 4BS in positive plate can be effectively controlled, and then guarantee
Initial capacity and battery life after the lead storage battery of subsequent preparation.The present invention accomplishes that activity substance content is controllable in positive plate,
Guarantee the consistency of battery performance.
By percentage to the quality, the component of positive plate lead paste of the present invention includes are as follows: antimony oxide 0.05%-0.5%, sulphur
Sour stannous 0.05%-0.5%, fiber 0.07%, water 12%, sulfuric acid 4%-6%, remaining is lead powder.
In order to guarantee the uniformity of lead plaster raw material mixing and the convenience of operation, in addition to antimony oxide and stannous sulfate,
The raw material proportioning of first lead plaster and the second lead plaster is identical, and identical as total lead plaster proportion.Preferably, step (2) and (3)
In, in addition to antimony oxide and stannous sulfate, lead powder and remaining additive, water, the ratio of sulfuric acid mixing are identical.
Mixing paste process is differentiated in acid adding speed and temperature control in step (2) and (3), preferably, in step
(2) in, water is added in lead powder mixture in 2-5min, stirs 2-3min；Sulfuric acid adds in 10-15min, mixing paste
Maximum temperature control is at 50 DEG C hereinafter, the control of temperature can pass through the speed of acid adding and the water-cooling system of paste mixing machine and air-cooled system
In step (3), water is added in lead powder mixture in 2-5min for system control, stirs 2-3min；Sulfuric acid adds in 2-5min
It is complete, reach highest temperature between 80-85 DEG C, and keep the temperature between 10-20 minutes by vacuum paste mixing machine, makes
3BS is converted to 4BS, and control 4BS crystal grain length within 30 microns.
Preferably, the specific gravity of the sulfuric acid is 1.3~1.4.
Studies have shown that four basic lead sulphates that vacuum mixing paste generates make the utilization rate of positive active material reach 58%, far
Much higher than the positive electrode active material utilization of traditional mixing paste.Vacuum mixing paste can significantly improve accumulator capacity and extend electric power storage
The pond service life.Preferably, preparing the second lead plaster under conditions of vacuum degree is 400~700mbar, vacuum is spent in step (3)
The low temperature that can make lead plaster reduces, and can not achieve conversion of the 3BS to 4BS.More preferably, the vacuum degree is 483.7mbar
In order to avoid 4BS excessive grain is grown up, preferably, the time being stirred to react is 10~20min in step (3).
The time is controlled, mainly controls the crystallite dimension of 4BS, the time is longer, and the crystallite dimension of 4BS is bigger, but excessive crystallite dimension
It is difficult to convert when pole plate can be made to be melted into, more preferably, the time being stirred to react is 10min in step (3).Item is prepared above-mentioned
After the mass percentage content of 4BS is 50~75%, 10min in the second lead plaster obtained under part, the numerical value of vacuum degree is reduced, is made
The temperature of lead plaster is reduced to 50 DEG C.
In step (2), the time being stirred to react is 3~5min.
The ratio of 4BS and 3BS affects the performance of lead plaster, and the crystal structure of 4BS and 3BS are slightly different, and passes through research hair
Existing, 4BS ratio 3BS generates stronger and longer acicular crystal, and interlaced, constitutes the skeleton of active material, Ke Yizeng
Big plate strength extends the service life cycle of battery, however excessive 3BS can make lead plaster structure excessively loose, hole
Excessive, lead plaster is easy to fall off when use.Preferably, the first lead plaster and the second lead plaster are in step (4) with 1~10:1 of mass ratio
Mixing.5~10min is mixed under the conditions of 50~60 DEG C of temperature.More preferably, the first lead plaster and the second lead plaster are with mass ratio 1:1
Mixing.
The present invention provides the positive plate of lead storage battery that the preparation method is prepared.Positive plate of lead storage battery of the present invention
So that battery life is significantly increased.
It is that the present invention has the utility model has the advantages that
(1) preparation of lead plaster is divided into two parts completion by the present invention, is prepared respectively containing the sulfuric acid Asia for overcoming non-antimony effect
First lead plaster of tin and antimony oxide and 3BS and the second lead plaster containing 4BS, then physical mixed is carried out, so that in anode diachylon
Contain a effective amount of 3BS and 4BS simultaneously, while promoting performance of the battery in the early stage in terms of capacity and battery life.
(2) present invention controls temperature and vacuum degree during the preparation process, obtains the 4BS of uniform particle sizes, physical mixed means
On the basis of keeping particle size, the additive amount of 4BS is improved, is conducive to improve battery life.
(3) present invention avoids the conversion of 4BS and the further increasing of partial size using the lead plaster mixing of medium temperature and curing process
Add, effectively control the partial size and content of 4BS in lead plaster, guarantees battery with two side terminals.
Detailed description of the invention
Fig. 1 is the SEM figure that 4BS lead plaster is made in embodiment 1.
Fig. 2 schemes for the SEM of positive plate lead paste obtained in embodiment 1.
Fig. 3 is the SEM figure of lead plaster made from comparative example 1.
Specific embodiment
For a better understanding of the present invention, below with reference to embodiment, the invention will be further described.
Embodiment 1
It chooses two different lead plasters and mixes, mixed ratio is 1:10, and the comparison that the service life is carried out after assembled battery is real
It tests, carries out following experiments.
The production of A high-content 4BS lead plaster
100Kg lead powder is added in vaccum mixing machine first, 70g fiber is added in lead powder, after doing stirring 3 minutes, is added
It 12 liters of water, is stirred for 3 minutes, then acid adding, sour specific gravity are that 1.4 acid adding amounts are 10kg, the angle of acid adding mouth is adjusted, acid adding
Time controlled at 5 minutes, and set highest temperature as 80 DEG C, set the vacuum degree of vaccum mixing machine in 483.8mbar, then
It is kept for 10 minutes during being stirred for, material is thus formed contents in the lead plaster of 50%4BS, controls the time at 10 minutes, keeps away
The excessive grain for exempting from 4BS is grown up.The product of formation is placed under scanning electron microscope and observes, as shown in Figure 1.
B contains additive Sb2O3Or SnSO4The production of lead plaster
1000Kg lead powder is added in common paste mixing machine, the Sb of 700g fiber and 1Kg is added2O3With the SnSO of 1Kg4, do
It is 5 minutes mixed, the water of 120Kg is added, adding the water time is 5 minutes, adds 1.4 sulfuric acid of 100Kg, acid adding speed is controlled,
It is added in 15min, controls the temperature of lead plaster at 50 DEG C hereinafter, stirring 3 minutes after adding acid.
The mixing of two kinds of lead plasters of C
The lead plaster of above-mentioned vaccum mixing machine is transferred in common paste mixing machine, and is stirred for 10 minutes, keeps two kinds of lead plasters mixed
Close uniformly, material is thus formed 4BS content 5% and the lead plaster containing stannous sulfate and antimony oxide, lead plaster obtained set
In it is electric under the microscope, as shown in Fig. 2, wherein 4BS uniform particle sizes, but content is lower.
The coated plate of D mixing lead plaster solidifies and battery assembly
Mixed lead plaster carries out coated plate with the grid of 20Ah battery, solidifies under the conditions of 55 DEG C, scoreboard, battery assembly and electricity
Performance detection is carried out after the chemical conversion of pond.
The system of the charge and discharge of circulating battery is as follows: 12V20Ah battery constant pressure 14.7V, current limliting 10A charging 4 hours, with
10A current discharge to 10.2V, upon discharging between when reaching 96 minutes, the condition as battery end of life.It the results are shown in Table 1.
Embodiment 2
It chooses two different lead plasters and mixes, mixed ratio is 1:1, and the comparison that the service life is carried out after assembled battery is real
It tests, carries out following experiments.
The production of A high-content 4BS lead plaster.
100Kg lead powder is added in vaccum mixing machine first, 70g fiber is added in lead powder, after doing stirring 3 minutes, is added
It 12 liters of water, is stirred for 3 minutes, then acid adding, sour specific gravity are that 1.4 acid adding amounts are 10kg, the angle of acid adding mouth is adjusted, acid adding
Time controlled at 5 minutes, and set highest temperature as 80 degree, set the vacuum degree of vaccum mixing machine in 483.7mbar, then
It is kept for 10 minutes during being stirred for, material is thus formed contents in the lead plaster of 50%4BS, controls the time at 10 minutes, keeps away
The excessive grain for exempting from 4BS is grown up.
B contains additive Sb2O3Or SnSO4The production of lead plaster
100Kg lead powder is added in common paste mixing machine, the Sb of 70g fiber and 0.1Kg is added2O3With the SnSO of 0.1Kg4,
Dry-mixed 5 minutes, the water of 12Kg is added, adding the water time is 5 minutes, adds 1.4 sulfuric acid of 10Kg, controls acid adding speed, makes
The temperature of lead plaster is controlled at 50 degree hereinafter, stirring 3 minutes after adding acid.
The mixing of two kinds of lead plasters of C
The lead plaster of above-mentioned vaccum mixing machine is transferred in common paste mixing machine, and is stirred for 10 minutes, keeps two kinds of lead plasters mixed
It closes uniformly, material is thus formed 4BS contents 25% and the lead plaster containing stannous sulfate and antimony oxide.
The coated plate of D mixing lead plaster solidifies and battery assembly
Mixed lead plaster carries out coated plate with the grid of 20Ah battery, solidifies under the conditions of 55 DEG C, scoreboard, battery assembly and electricity
Performance detection is carried out after the chemical conversion of pond.
The system of the charge and discharge of circulating battery is as follows: 12V20Ah battery constant pressure 14.7V, current limliting 10A charging 4 hours, with
10A current discharge to 10.2V, upon discharging between when reaching 96 minutes, as the condition of battery end of life, the results are shown in Table 1.
Comparative example 1
According to the charge ratio of embodiment 1, lead powder, fiber, Sb are added in common paste mixing machine2O3And SnSO4, dry-mixed 5 points
Water is added in clock, and adding the water time is 5 minutes, adds the sulfuric acid that specific gravity is 1.4, controls and adds in acid adding speed 15min, adds
It is stirred after acid, lead plaster is made, lead plaster is placed in electric microscopic observation, as shown in figure 3, almost all is made of 3BS in lead plaster, almost
4BS is not observed.
Lead plaster obtained carries out coated plate, solidifies under the conditions of 75 DEG C, scoreboard, carries out performance inspection after battery assembly and Battery formation
It surveys.Detection method the results are shown in Table 1 with embodiment 1.
The experimental result of 1. battery contrast test of table
| Battery size | Embodiment 1 | Embodiment 2 | Comparative example 1 |
| Room temperature capacity | 128 minutes | 125 minutes | 130 minutes |
| Cycle-index | 325 | 452 | 280 |
Find out from the above, the initial capacity of the battery prepared after using two kinds of lead plasters to mix with 1:10 has 2 minutes
It reduces, the service life of battery is increased to 325 times from 280 times, and the ratio of raising is 16%, and the service life of battery increases obvious.
The initial capacity of the battery prepared after using two kinds of lead plasters to mix with 1:1 has a reduction in 5 minutes, service life of battery from
It is increased to 452 times for 280 times, the ratio of raising is 61%, and the service life of battery increases considerably.
Claims (9)
1. a kind of preparation method of positive plate of lead storage battery, the lead plaster raw material of the positive plate includes lead powder, additive, water and sulphur
Acid, the additive include antimony oxide and stannous sulfate,
It is characterized in that, the preparation method comprises the following steps:
(1) in addition to antimony oxide and stannous sulfate, it is divided into two parts after remaining additive is mixed, and add in the first portion
Add whole antimony oxide and stannous sulfate, does not add in the second portion；
(2) by after part lead powder and first part's additives dry blended, add water-wet mixed, finally plus sulfuric acid is stirred to react, control reaction
Temperature is not more than 50 DEG C, obtains the first lead plaster；
(3) by after remaining lead powder and second part additives dry blended, add water-wet mixed, finally plus sulfuric acid is stirred to react, control reaction
80~85 DEG C of temperature, vacuum degree is 400~700mbar, obtains the second lead plaster；
(4) the first lead plaster and the second lead plaster are mixed, obtains anode diachylon；
(5) coated plate, solidification, the cured temperature are no more than 55 DEG C.
2. preparation method as described in claim 1, which is characterized in that in step (2) and (3), remove antimony oxide and sulfuric acid
Outside stannous, lead powder and remaining additive, water, the ratio of sulfuric acid mixing are identical.
3. preparation method as claimed in claim 2, which is characterized in that in step (2), it is mixed that water is added to lead powder in 2-5min
It closes in object, mixes 2-3min；Sulfuric acid adds in 10-15min.
4. preparation method as claimed in claim 3, which is characterized in that in step (3), it is mixed that water is added to lead powder in 2-5min
It closes in object, mixes 2-3min；Sulfuric acid adds in 2-5min.
5. preparation method as described in claim 1, which is characterized in that in step (3), time for being stirred to react is 10~
20min。
6. preparation method as described in claim 1, which is characterized in that in step (2), the time being stirred to react is 3~5min.
7. preparation method as described in claim 1, which is characterized in that in step (4), the first lead plaster and the second lead plaster are with quality
It is mixed than 1~10:1.
8. preparation method as claimed in claim 7, which is characterized in that mix 5~10min under the conditions of 50~60 DEG C of temperature.
9. a kind of positive plate of lead storage battery being prepared by any one of the claim 1-8 preparation method.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107732161B (en) * | 2017-09-20 | 2020-05-29 | 超威电源集团有限公司 | Lead storage battery pole plate manufacturing method for reducing powder falling rate of pole plate surface |
| CN108550804A (en) * | 2018-03-21 | 2018-09-18 | 孟婷婷 | A kind of lead-acid accumulator anode diachylon containing rare earth red lead |
| CN108832080A (en) * | 2018-05-23 | 2018-11-16 | 超威电源有限公司 | A kind of lead-acid accumulator negative pole lead paste and preparation method thereof |
| CN109273716B (en) * | 2018-08-16 | 2020-04-03 | 天能电池集团股份有限公司 | Long-life lead storage battery and preparation method thereof |
| CN110247024B (en) * | 2019-05-06 | 2020-12-25 | 天能电池集团股份有限公司 | Storage battery pole plate lead paste formula and preparation method of storage battery pole plate |
| CN110364770B (en) * | 2019-06-21 | 2021-02-19 | 天能电池集团股份有限公司 | Lead storage battery capable of overcoming early capacity fading and preparation method thereof |
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| CN103762358A (en) * | 2014-01-10 | 2014-04-30 | 江苏苏中电池科技发展有限公司 | Positive lead plaster for lead-acid storage battery and preparation method of positive lead plaster |
| CN106129357A (en) * | 2016-07-14 | 2016-11-16 | 安徽轰达电源有限公司 | The solid lead carbon battery lead plaster of deep glue-type spy |
| CN106299257A (en) * | 2016-08-24 | 2017-01-04 | 天能电池集团（安徽）有限公司 | A kind of high temperature and the method for cream |
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| CN102683651A (en) * | 2012-05-28 | 2012-09-19 | 江苏超威电源有限公司 | Intermittent sectional quick solidification method for cadmium-free internal formation storage battery |
| CN103762358A (en) * | 2014-01-10 | 2014-04-30 | 江苏苏中电池科技发展有限公司 | Positive lead plaster for lead-acid storage battery and preparation method of positive lead plaster |
| CN106129357A (en) * | 2016-07-14 | 2016-11-16 | 安徽轰达电源有限公司 | The solid lead carbon battery lead plaster of deep glue-type spy |
| CN106299257A (en) * | 2016-08-24 | 2017-01-04 | 天能电池集团（安徽）有限公司 | A kind of high temperature and the method for cream |
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