CN106684311A - Cylindrical lithium battery oily system electrode sheet drying method - Google Patents
Cylindrical lithium battery oily system electrode sheet drying method Download PDFInfo
- Publication number
- CN106684311A CN106684311A CN201510745291.1A CN201510745291A CN106684311A CN 106684311 A CN106684311 A CN 106684311A CN 201510745291 A CN201510745291 A CN 201510745291A CN 106684311 A CN106684311 A CN 106684311A
- Authority
- CN
- China
- Prior art keywords
- electrode sheet
- drying means
- lithium battery
- air
- vacuum oven
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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
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of 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
Abstract
The invention discloses a cylindrical lithium battery oily system electrode sheet drying method, which comprises a positive electrode sheet drying method and a negative electrode sheet drying method, wherein the positive electrode sheet drying method comprises: 1, low temperature air drying, and 2, high temperature vacuum drying, and the negative electrode sheet drying method comprises: 1, low temperature air drying, and 2, high temperature vacuum drying. According to the present invention, the process of the cylindrical lithium battery oily system electrode sheet drying method is simple, the low temperature air surface shaping and vacuum two-stage high-temperature baking is used so as to ensure the uniform drying and complete the shaping, and finally the dried product is taken out at the room temperature so as not to cause the surface wrinkle.
Description
Technical field
Present invention relates particularly to a kind of cylindrical lithium battery oleaginous system pole piece drying means, belongs to lithium battery
Preparing technical field.
Background technology
Cylindrical lithium ion battery is divided into LiFePO4, cobalt acid lithium, LiMn2O4, the mixing of cobalt manganese, ternary material
The different systems of material, shell is divided into two kinds of box hat and polymer, and different materials system battery has different excellent
Point；Main based on box hat cylinder ferric phosphate lithium cell in prior art, lithium iron battery shows as capacity
High, the good charge-discharge performance of high, output voltage, output voltage stabilization, can heavy-current discharge,
Safety in electrochemically stable performance, use, will not be because of misoperations such as overcharge, overdischarge and short circuits
And cause burning or explode, it is operating temperature range width, environmentally friendly；It is widely used in Solar lamp
On tool, lamp for lawn, the standby energy, electric tool, toy models；Existing cylindrical lithium ion
In cell production process, need to prepare positive plate and negative plate；Wherein, pole piece after coating, is needed
Dry, in prior art drying course, even if the film being coated with using relatively low temperature still can some volumes
Song, if the time of shortening, is dried again not thorough enough；Existing solution curling problem is realized by roll-in,
But it easily easily causes pole piece damage.
The content of the invention
(1) technical problem to be solved
To solve the above problems, the present invention proposes a kind of cylindrical lithium battery oleaginous system pole piece drying side
Method, operation is fairly simple, and the pole piece quality of production is high.
(2) technical scheme
The cylindrical lithium battery oleaginous system pole piece drying means of the present invention, methods described is dry including positive plate
Drying method and negative plate drying means；
The positive plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 60 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 122 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h；
The negative plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 50 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 102 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h.
Wherein, the initial preheating temperature of the vacuum oven is not less than 50 DEG C.
(3) beneficial effect
The present invention compared with prior art, the present invention cylindrical lithium battery oleaginous system pole piece drying side
Method, operation is fairly simple, using the sizing of Cryogenic air surface and vacuum two-part high-temperature baking, it is ensured that
Its drying is more uniform, and completes sizing；Finally, take out at room temperature, do not result in surface folding.
Specific embodiment
A kind of cylindrical lithium battery oleaginous system pole piece drying means, methods described includes positive plate drying side
Method and negative plate drying means；
The positive plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 60 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 122 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h；
The negative plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 50 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 102 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h.
Wherein, the initial preheating temperature of the vacuum oven is not less than 50 DEG C.
The present invention cylindrical lithium battery oleaginous system pole piece drying means, Cryogenic air be dried, be
Have under air entry condition and dried, it is ensured that pole piece is shaped, and is then cooled to slightly above room temperature
Afterwards, then under air condition, vacuum oven is delivered to；Its close room temperature and be complete in atmosphere drying,
Surface folding is not resulted in, vacuum high-temperature baking is then carried out, is toasted using two-part, it is ensured that its baking
It is dry more uniform, and complete sizing；Finally, take out at room temperature, do not result in surface folding, take
Shaped using pressing plate after going out.
Embodiment described above is only that the preferred embodiment of the present invention is described, not right
The spirit and scope of the present invention are defined.On the premise of without departing from design concept of the present invention, ability
Various modifications and improvement that domain ordinary person makes to technical scheme, all should drop into this
Bright protection domain, the technology contents that the present invention is claimed all are documented in claims
In.
Claims (2)
1. a kind of cylindrical lithium battery oleaginous system pole piece drying means, it is characterised in that：Methods described
Including positive plate drying means and negative plate drying means；
The positive plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 60 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 122 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h；
The negative plate drying means comprises the steps：The first step, Cryogenic air is dried, by air
Baking box is preheated to 40 DEG C, then coating is delivered into air ovens, and rises to 50 DEG C with 2 DEG C/min speed
Afterwards, 1h is toasted, is then cooled to higher than room temperature be less than 5 DEG C；Second step, high-temperature vacuum is dried, will
Vacuum oven is delivered in the above-mentioned coating for completing Cryogenic air drying, and is vacuumized, and is risen to 10 DEG C/min
2h is incubated after 90 DEG C；Then it is incubated 5h after rising to 102 DEG C with 10 DEG C/min；Then in vacuum oven
Cooling is stood, is taken out after it reaches room temperature, be positioned over compacting under pressing plate and be not less than 1h.
2. cylindrical lithium battery oleaginous system pole piece drying means according to claim 1, it is special
Levy and be：The initial preheating temperature of the vacuum oven is not less than 50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510745291.1A CN106684311A (en) | 2015-11-05 | 2015-11-05 | Cylindrical lithium battery oily system electrode sheet drying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510745291.1A CN106684311A (en) | 2015-11-05 | 2015-11-05 | Cylindrical lithium battery oily system electrode sheet drying method |
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| CN106684311A true CN106684311A (en) | 2017-05-17 |
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| CN201510745291.1A Pending CN106684311A (en) | 2015-11-05 | 2015-11-05 | Cylindrical lithium battery oily system electrode sheet drying method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091937A (en) * | 2017-12-04 | 2018-05-29 | 广州市融成锂能锂电池有限公司 | The pole piece drying means and high multiplying power lithium ion battery of a kind of high multiplying power lithium ion battery |
| CN111403689A (en) * | 2020-03-31 | 2020-07-10 | 上海电气集团股份有限公司 | Baking method for oil-type negative electrode plate of lithium ion battery |
| CN111729012A (en) * | 2020-07-22 | 2020-10-02 | 桂林医学院 | Composition for controlling fat accumulation in fat cells based on active ingredients of dried orange peel |
-
2015
- 2015-11-05 CN CN201510745291.1A patent/CN106684311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091937A (en) * | 2017-12-04 | 2018-05-29 | 广州市融成锂能锂电池有限公司 | The pole piece drying means and high multiplying power lithium ion battery of a kind of high multiplying power lithium ion battery |
| CN111403689A (en) * | 2020-03-31 | 2020-07-10 | 上海电气集团股份有限公司 | Baking method for oil-type negative electrode plate of lithium ion battery |
| CN111729012A (en) * | 2020-07-22 | 2020-10-02 | 桂林医学院 | Composition for controlling fat accumulation in fat cells based on active ingredients of dried orange peel |
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Application publication date: 20170517 |