CN110749161A - Lithium battery core drying process - Google Patents
Lithium battery core drying process Download PDFInfo
- Publication number
- CN110749161A CN110749161A CN201810811398.5A CN201810811398A CN110749161A CN 110749161 A CN110749161 A CN 110749161A CN 201810811398 A CN201810811398 A CN 201810811398A CN 110749161 A CN110749161 A CN 110749161A
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- Prior art keywords
- lithium battery
- heating
- battery cell
- heating plate
- sealed cavity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
- F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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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- 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
Abstract
The invention discloses a lithium battery core drying process, which comprises the following steps: horizontally placing a heating plate; placing a lithium battery cell on the heating plate, and enabling the largest surface of the outer surface of the lithium battery cell to be in contact with the heating plate under the action of gravity; stacking another heating plate above the heating plates to enable the lithium battery cell to be located between the heating plates; repeating the second step and the third step for a first preset number of times to enable the lithium battery cores to be arranged between the adjacent heating plates; to stacking together the hot plate is switched on and is generated heat, toasts lithium cell electricity core. The invention has the advantages of high production efficiency, high product qualification rate and energy conservation.
Description
Technical Field
The invention relates to the technical field of lithium battery cell drying, in particular to a lithium battery cell drying process.
Background
At present, the lithium ion battery industry at home and abroad has a good development prospect, and the lithium ion battery is generally applied to portable electrical appliances such as a portable computer, a camera and mobile communication due to the unique performance advantages of the lithium ion battery. The high-capacity lithium ion battery developed at present is widely applied to the aspects of electric automobiles, artificial satellites, aerospace and energy storage. With the shortage of energy and the environmental pressure of the world. Lithium ion batteries are now widely used in the electric vehicle industry, particularly in the presence of lithium iron phosphate batteries, which further promotes the development and application of the lithium battery industry. In order to ensure high quality of the lithium battery, the production environment of each process in the production process of the lithium battery needs to be strictly controlled. In the production process of the lithium battery, drying equipment is required to be adopted to carry out heating and drying treatment on the battery shell, the pole piece, the pole coil and the battery core.
The existing lithium battery core drying process comprises the following steps: firstly, vertically placing a plurality of lithium battery cells into a plurality of clamps, and then placing the lithium battery cells together with the clamps into a sealed cavity for drying. The anchor clamps that chinese patent publication that patent application number is 201620348214.2 can be seen to current anchor clamps, it includes the heating chamber, the heating chamber is bottom plate and curb plate and fixed plate enclose the top open-ended cavity that closes and form, curb plate and fixed plate set up respectively in the offside of bottom plate, parallel arrangement has a plurality of slip guide arms between the fixed plate, be on a parallel with the fixed plate between the fixed plate and be provided with a plurality of vertical hot plates of placing, the lateral wall of hot plate is equipped with the mounting hole, be fixed with the connecting piece through the mounting hole, the connecting piece on the adjacent hot plate is through the mutual interlock of the recess of symmetry setting, be equipped with the through-hole on the fixed plate, be equipped with adjusting nut on. Wherein, in the space is placed to the lithium cell electricity core of in order to facilitate inserting lithium cell electricity core between the hot plate, be formed with the activity space that supplies the hot plate to remove between fixed plate and the hot plate to when needs put into lithium cell electricity core between the hot plate, pull open interval between the hot plate is putting into lithium cell electricity core in the space between the hot plate.
The existing lithium battery core drying process has the following defects: firstly, when the lithium battery cell is placed between the heating plates, the space between the heating plates needs to be firstly pulled open, then the lithium battery cell is placed in the space between the heating plates, and then the heating plates are moved to enable the adjacent heating plates to be clamped on the lithium battery cell, so that when the size of the lithium battery cell is different, if the height of the small lithium battery cell is smaller than that of the heating plates, the lithium battery cell is not convenient to take and place, the production efficiency is low, the heating plates are not easy to clamp in place, the lithium battery cell and the heating plates are easy to be attached and not tight, and in addition, if the height of the large lithium battery cell is higher than that of the heating plates, the lithium battery cell is not uniformly; secondly, because the movable space for the heating plate to move is formed between the fixing plate and the heating plate, when the clamp is placed in the sealing cavity, the movable space occupies a part of the space of the sealing cavity, so that the space of the sealing cavity is wasted, and the production efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lithium battery core drying process with high production efficiency.
In order to solve the technical problem, the invention discloses a lithium battery core drying process, which comprises the following steps:
s1, horizontally placing a heating plate;
s2, placing a lithium battery cell on the heating plate, and enabling the largest surface of the outer surface of the lithium battery cell to be in contact with the heating plate under the action of gravity;
s3, another heating plate is stacked above the heating plates, and the lithium battery cell is located between the heating plates;
s4, repeating the step S2 and the step S3 for the first preset times to enable the lithium battery electric cores to be arranged between the adjacent heating plates;
and S5, heating and baking the stacked lithium battery cells.
Preferably, before the step S5, the method further includes: and detecting the heating plate to judge whether the electric heating wire of the heating plate is conducted.
Preferably, the step S5 specifically includes: placing the stacked heating plates in a sealed cavity, heating through the heating plates, and baking the stacked lithium battery cells;
the pair the hot plate detects to judge whether the heating wire of hot plate switches on includes: after the heating plates stacked together are placed in the sealed cavity, the sealed cavity detects the heating plates so as to judge whether the electric heating wires of the heating plates are conducted.
Preferably, after the step S5, the method further includes: and after the baking is finished, detecting the heating plate to judge whether the electric heating wire of the heating plate is conducted or not.
Preferably, before the step S5, the method further includes: and detecting whether the temperature of the heating plate is in a preset temperature range.
Preferably, the lithium battery cell drying process further includes: and scanning the code of each heating plate to obtain the code information, and sending the code information to a central control device.
Preferably, a spacer is disposed between adjacent heating plates.
Preferably, the step S5 further includes: and during heating, exhausting the sealed cavity, then inflating the sealed cavity, and circularly exhausting and inflating for a second preset time.
Preferably, the step S5 specifically includes: placing the stacked heating plates in a sealed cavity to bake the lithium battery cell;
the method further comprises the following steps after the step S5: after drying, firstly filling dry gas into the sealed cavity, and then taking out the heating plate in the sealed cavity.
Preferably, after the step S5, the method further includes: and cooling the lithium battery cell and the heating plate in the sealed cavity.
The lithium battery core drying process has the following beneficial effects: the lithium battery cell drying process comprises the following steps: step S1, horizontally placing a heating plate; step S2, placing a lithium battery cell on the heating plate, and enabling the largest surface of the outer surface of the lithium battery cell to be in contact with the heating plate under the action of gravity; step S3, another heating plate is stacked above the heating plates, so that the lithium battery cell is positioned between the heating plates; step S4, repeating the step S2 and the step S3 for a first preset number of times, so that the lithium battery cells are arranged between every two adjacent heating plates; and S5, heating and baking the stacked lithium battery electric cores. Because place lithium cell electricity core tiling on the hot plate, be convenient for get the absorption of putting the material instrument through sucking disc etc. therefore be convenient for get put the lithium cell electricity core of variation in size, production efficiency is high, when having avoided lithium cell electricity core to put vertically, so that press from both sides easily and hinder or scrape the problem of colored lithium cell electricity core through the manipulator centre gripping. The lithium battery cell is attached to the heating plate through the self gravity, and the heating plate is used as a weight bearing object, so that the heat conduction is better, the heat conduction is uniform, the product qualification rate is high, the contact area between the lithium battery cell and the heating plate is large, and the production efficiency is further improved; in addition, the number of the heating plates can be increased or decreased according to the number of the lithium battery cores, so that resource waste is avoided well, and energy is saved.
Drawings
Fig. 1 is a flow chart of a lithium battery cell drying process of the present invention;
fig. 2 is a schematic structural diagram of a plurality of heating plates stacked together in a lithium battery cell drying process according to the present invention;
fig. 3 is a schematic structural diagram of a lithium battery cell drying process according to the present invention, in which a plurality of heating plates are stacked together and a lithium battery cell is placed.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention.
Referring to fig. 1 to 3, the present invention discloses a lithium battery cell drying process, which includes the following steps:
s1, horizontally placing the heating plate 1;
the heating plate 1 may be horizontally placed on a support, or the heating plate 1 may be directly placed on a sealed cavity, which is not particularly limited herein. In the embodiment, in order to improve the efficiency of installing the lithium battery cell 2, the heating plate 1 is horizontally placed on a support through a robot.
S2, placing a lithium battery cell 2 on the heating plate 1, and enabling the largest surface of the outer surface of the lithium battery cell 2 to be in contact with the heating plate 1 under the action of gravity;
S3, stacking another heating plate 1 above the heating plates 1, so that the lithium battery cell 2 is located between the heating plates 1;
adjacent the quantity of lithium cell between the hot plate 1 can set up as required, and the hot plate 1 lid that is located the lithium cell top is established and is located on the hot plate 1 of the below of lithium cell electricity core 2, the hot plate 1 that is located the lithium cell top can with the contact of lithium cell electricity core 2 of this hot plate 1 below, also can not contact, does not do specific limit here. For the different lithium battery electric core 2 of adaptation thickness, be located the lithium cell top hot plate 1 and the lithium battery electric core 2 interval preset distance of this hot plate 1 below. It is understood that, in an embodiment, the thicknesses of the lithium battery cells 2 are the same, and after the step S3, the method further includes: adjust the distance between the hot plate 1, make the hot plate 1 of lithium cell electricity core 2 top and the hot plate 1 of below all with lithium cell electricity core 2 contacts. Thus, the drying efficiency can be improved. Preferably, a spacer (shown in the drawing) is disposed between adjacent heating plates 1 to space the heating plates 1 apart by a predetermined distance. It is understood that the spacer and the heating plate 1 may be integrally formed or detachably connected, and are not limited in this respect.
S4, repeating the step S2 and the step S3 for a first preset number of times, so that the lithium battery electric cores 2 are arranged between the adjacent heating plates 1;
every can place a plurality of lithium cell electricity cores 2 on the hot plate 1, lithium cell electricity core 2 that is located on same hot plate 1 forms the one deck, the number of piles of hot plate 1 with the number of piles of lithium cell electricity core 2 can set up as required, promptly first preset number of times can set up as required, does not do specific limitation here, for example, it can be 4 layers, 5 layers or 6 layers etc..
And S5, heating and baking the stacked lithium battery cells 2.
It is understood that the heating plates 1 stacked together may be placed in a sealed cavity or a baking room for baking, and thus, the baking environment is not particularly limited herein. In this embodiment, will stack together hot plate 1 is placed in the sealed cavity, through hot plate 1 generates heat, to stack together lithium battery electricity core 2 toasts, and its is small, therefore toasts efficiently.
Preferably, before the step S5, the method further includes: and detecting the heating plate 1 to judge whether the electric heating wire of the heating plate 1 is conducted. Therefore, the problem of uneven heating caused by the damage of the heating circuit in the heating plate 1 can be better avoided. And if the circuit path of the heating plate 1 is not conducted, taking out the heating plate 1. The heating plate 1 may be detected by a voltmeter or an ammeter, or may be detected by other detection devices, which is not limited herein. In an embodiment, a universal meter is connected to the power supply connector of the heating plate 1 to detect the resistance of the heating wire, so that when the resistance of the heating wire is within a preset range, it can be determined that the heating wire of the heating plate 1 is conducted, otherwise, the heating wire is not conducted. It can be understood that both ends of the heating wire of the heating plate 1 are electrically connected to the power connector.
Preferably, the step S5 specifically includes: placing the stacked heating plate 1 in a sealed cavity, supplying power to the stacked heating plate 1 through the sealed cavity, generating heat through the heating plate 1, and baking the stacked lithium battery cell 2;
the detecting whether the circuit path of the heating plate 1 is conducted includes: after the heating plate 1 stacked together is placed in the sealed cavity, the sealed cavity detects the heating plate 1 to judge whether the electric heating wire of the heating plate 1 is conducted. Because the heating plate 1 is detected through the sealed cavity, no additional detection equipment is needed, so that the production efficiency is high, and the production cost is low.
Wherein, be provided with on the hot plate 1 with the power connector that the heating wire links to each other, be provided with guiding mechanism and with the power connector of power connector adaptation in the sealed cavity. After the stacked heating plates 1 are placed in the sealed cavity, a detection circuit of the sealed cavity is electrically connected with the heating wires through the power supply connector and the power connector, and then whether the resistance of the heating wires is in a preset range is detected, so that whether the heating wires of the heating plates are conducted is judged. When the switch is not switched on, the prompt can be carried out through characters, voice or indicator lights and the like. The step S5 further includes: the heating plates 1 stacked together are guided into the sealed cavity by the guide mechanism in the sealed cavity. Therefore, the power supply connector is convenient to align with the power supply connector, and the production efficiency is improved.
Preferably, the step S5 further includes: the heating plate 1 which is stacked together is placed in a sealed cavity through a robot, when the heating plate 1 is placed at a preset position, the heating plate 1 triggers the sealed cavity, so that a placement in-place signal of the sealed cavity is sent to the robot, and the robot is released from being connected with the heating plate 1 according to the placement in-place signal. Thereby better ensuring that the heating plate 1 is put in place.
Preferably, after the step S5, the method further includes: after the baking is finished, the heating plate 1 is detected to judge whether the heating wire of the heating plate 1 is conducted. Therefore, the problem of uneven heating caused by the damage of a heating circuit in the heating plate 1 in the heating process can be better avoided, defective products can be better screened out, and the safety of the products in terminal use can be improved.
Preferably, before the step S5, the method further includes: and detecting whether the temperature of the heating plate 1 is in a preset temperature range. By detecting the temperature of the heating plate 1, it is possible to further detect whether the heating plate 1 is abnormal. It is understood that the temperature detecting means for detecting the temperature of the heating plate 1 may be selected according to the needs, and is not particularly limited herein.
Preferably, the lithium battery cell drying process further includes: scanning the code of each heating plate 1 to obtain the code information, and sending the code information to a central control device. Collect the management through central control device to 2 products of lithium cell electricity core to can manage and control the yields or the defective products of product. In this embodiment, the robot that carries the heating plates 1 scans the code of each heating plate 1 to acquire the code information, and transmits the code information to a central control device, so that the production efficiency is high.
Preferably, the lithium battery cell 2 includes a sample cell and a genuine cell. That is to say, a part of the sample cells and a plurality of genuine cells are placed in the heating plate 1, so that when the baked lithium battery cells 2 are detected to be qualified, whether the genuine cells are qualified is obtained by detecting whether the sample cells are qualified, and thus waste can be well avoided. It is understood that the sample cell is a lithium battery cell 2 having non-functional defects such as scratches on the outer surface of the core of the lithium battery. The certified product battery cell is the lithium battery cell 2 with the outer surface meeting the preset appearance standard.
Preferably, the step S5 further includes: and during heating, exhausting the sealed cavity, then inflating the sealed cavity, and circularly exhausting and inflating for a second preset time. That is, ventilation is continuously performed during the drying process, so that the drying efficiency can be improved. The gas to be filled is preferably an inert gas, and the inert gas may be hydrogen, helium or the like. For cost reduction, the gas charge is more preferably nitrogen. It is understood that the second preset number of times may be set as needed, and is not particularly limited herein.
Specifically, the steps of pumping air into the sealed cavity during heating, then inflating the sealed cavity, and circularly pumping air and inflating air for a second preset time include the following steps:
A. heating the inside of the sealed cavity through a heating plate to enable the temperature of the sealed cavity to rise to a first temperature, wherein the first temperature is higher than 85 ℃;
B. vacuumizing the sealed cavity, and reducing the pressure in the sealed cavity to below 10Pa within 1 minute;
C. stopping vacuumizing, filling dry inert gas with the first temperature into the sealed cavity, and increasing the pressure in the sealed cavity to more than 3000Pa within 1 minute;
D. stopping filling the inert gas, standing for 1 to 2 minutes, and rapidly and uniformly heating the lithium battery cell 2 to the first temperature under the combined action of the internal and external thermal fields;
E. repeating the steps B to D;
F. after the lithium battery cell 2 is baked for 30 to 60 minutes, the heating plate stops heating.
The drying method can improve the production efficiency, improve the product yield and save energy.
Preferably, after the step S5, the method further includes: after the drying is finished, firstly, the dried gas is filled into the sealed cavity, and then the heating plate 1 in the sealed cavity is taken out. Thus, the dryness of the lithium battery cell 2 is better ensured. Specifically, in this embodiment, the dry inert gas with the first temperature is filled into the sealed cavity, the humidity of the dry inert gas is less than 0.1%, the pressure in the sealed cavity is increased to 105Pa or more within 1 minute, and then the heating plate 1 in the sealed cavity is taken out. Therefore, the production efficiency is high, and the product yield is improved.
Preferably, after the step S5, the method further includes: and cooling the lithium battery cell 2 and the heating plate 1 in the sealed cavity. It is understood that the cooling may be performed directly in the sealed cavity, or the lithium battery cell 2 may be cooled by a cooling box after being taken out from the sealed cavity, which is not limited herein. Specifically, the lithium battery core 2 and the heating plate 1 are cooled in an environment with a dew point of less than-50 ℃ and a temperature of 25 ℃, and the process is completed when the temperature of the battery is reduced to about 50 ℃.
In summary, the drying process for the lithium battery cell 2 includes the following steps: s1, horizontally placing the heating plate 1; s2, placing a lithium battery cell 2 on the heating plate 1, and enabling the largest surface of the outer surface of the lithium battery cell 2 to be in contact with the heating plate 1 under the action of gravity; s3, stacking another heating plate 1 above the heating plates 1, so that the lithium battery cell 2 is located between the heating plates 1; s4, repeating the step S2 and the step S3 for a first preset number of times, so that the lithium battery electric cores 2 are arranged between the adjacent heating plates 1; and S5, baking the heating plate 1 stacked together. Because place lithium battery cell 2 tiling promptly on hot plate 1, be convenient for get the absorption of putting the material instrument through sucking disc etc. therefore be convenient for get and put lithium battery cell 2 of variation in size, production efficiency is high, when having avoided lithium battery cell 2 to put vertically, so that press from both sides easily or scrape the problem of colored lithium battery cell 2 through the manipulator centre gripping. The lithium battery cell 2 is attached to the heating plate 1 through self gravity, and the heating plate 1 serves as a weight bearing object, so that the heat conduction is good, the heat conduction is uniform, the product qualification rate is high, the contact area between the lithium battery cell 2 and the heating plate 1 is large, and the production efficiency is further improved; in addition, the number of the heating plates 1 can be increased or decreased according to the number of the lithium battery electric cores 2, so that resource waste is avoided better, and energy is saved.
The above detailed description is provided for the lithium battery cell drying process provided by the present invention, and the principle and the implementation of the present invention are explained in the present document by using specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, the present disclosure is only an embodiment of the present disclosure, and not intended to limit the scope of the present disclosure, and all equivalent structures or equivalent flow transformations made by using the present disclosure and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present disclosure, and should not be construed as limiting the present disclosure.
Claims (10)
1. A lithium battery cell drying process is characterized by comprising the following steps:
s1, horizontally placing a heating plate;
s2, placing a lithium battery cell on the heating plate, and enabling the largest surface of the outer surface of the lithium battery cell to be in contact with the heating plate under the action of gravity;
s3, another heating plate is stacked above the heating plates, and the lithium battery cell is located between the heating plates;
s4, repeating the step S2 and the step S3 for the first preset times to enable the lithium battery electric cores to be arranged between the adjacent heating plates;
and S5, heating and baking the stacked lithium battery cells.
2. The lithium battery cell drying process of claim 1, further comprising, before the step S5: and detecting the heating plate to judge whether the electric heating wire of the heating plate is conducted.
3. The lithium battery cell drying process of claim 2, wherein the step S5 specifically includes: placing the stacked heating plates in a sealed cavity, heating through the heating plates, and baking the stacked lithium battery cells;
the pair the hot plate detects to judge whether the heating wire of hot plate switches on includes: after the heating plates stacked together are placed in the sealed cavity, the sealed cavity detects the heating plates so as to judge whether the electric heating wires of the heating plates are conducted.
4. The lithium battery cell drying process of any one of claims 1 to 3, further comprising, after the step S5: and after the baking is finished, detecting the heating plate to judge whether the electric heating wire of the heating plate is conducted or not.
5. The lithium battery cell drying process of any one of claims 1 to 3, further comprising, before the step S5: and detecting whether the temperature of the heating plate is in a preset temperature range.
6. The lithium battery cell drying process of any one of claims 1 to 3, further comprising: and scanning the code of each heating plate to obtain the code information, and sending the code information to a central control device.
7. The lithium battery cell drying process of any one of claims 1 to 3, wherein a spacer is arranged between adjacent heating plates.
8. The lithium battery cell drying process of claim 3, wherein the step S5 further comprises: and during heating, exhausting the sealed cavity, then inflating the sealed cavity, and circularly exhausting and inflating for a second preset time.
9. The lithium battery cell drying process of claim 1 or 2, wherein the step S5 specifically includes: and placing the stacked heating plates in a sealed cavity to bake the lithium battery cell.
The method further comprises the following steps after the step S5: after drying, firstly filling dry gas into the sealed cavity, and then taking out the heating plate in the sealed cavity.
10. The lithium battery cell drying process of claim 3, further comprising, after the step S5: and cooling the lithium battery cell and the heating plate in the sealed cavity.
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| CN201810811398.5A CN110749161A (en) | 2018-07-23 | 2018-07-23 | Lithium battery core drying process |
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| CN201810811398.5A CN110749161A (en) | 2018-07-23 | 2018-07-23 | Lithium battery core drying process |
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| CN107655296A (en) * | 2017-10-10 | 2018-02-02 | 深圳市大成精密设备有限公司 | A kind of material containing car for possessing separate type dynamic heat contact system |
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| CN201266002Y (en) * | 2008-06-24 | 2009-07-01 | 石家庄开发区纪元电气有限公司 | High-frequency vacuum timber dryer |
| CN103954104A (en) * | 2014-04-30 | 2014-07-30 | 深圳市瑞盛科技有限公司 | Drying oven |
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