CN219923560U - Lithium battery coating oven capable of preventing curling - Google Patents

Lithium battery coating oven capable of preventing curling Download PDF

Info

Publication number
CN219923560U
CN219923560U CN202321041851.1U CN202321041851U CN219923560U CN 219923560 U CN219923560 U CN 219923560U CN 202321041851 U CN202321041851 U CN 202321041851U CN 219923560 U CN219923560 U CN 219923560U
Authority
CN
China
Prior art keywords
oven
lithium battery
coater roller
heat insulation
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321041851.1U
Other languages
Chinese (zh)
Inventor
李道仲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Center Power Tech Co Ltd
Original Assignee
Shenzhen Center Power Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Center Power Tech Co Ltd filed Critical Shenzhen Center Power Tech Co Ltd
Priority to CN202321041851.1U priority Critical patent/CN219923560U/en
Application granted granted Critical
Publication of CN219923560U publication Critical patent/CN219923560U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Landscapes

  • Battery Electrode And Active Subsutance (AREA)

Abstract

The utility model relates to a lithium battery coating oven capable of preventing curling, which is suitable for polar curling and comprises a coater roller assembly, a plurality of support rollers and a plurality of oven bodies; the coater roller assembly comprises a first coater roller and a second coater roller, and a plurality of sections of oven bodies are arranged between the first coater roller and the second coater roller; the support rollers are arranged in the oven body and are in one-to-one correspondence with the oven body; a heat insulation plate is arranged between two adjacent oven bodies; each oven body comprises a plurality of partition areas partitioned by a plurality of heat insulation baffles, each heat insulation baffle is arranged in parallel, and each heat insulation baffle is perpendicular to the heat insulation plate. The utility model can independently adjust the temperature and the air frequency of different dividing regions, realize accurate adjustment of the air frequency and the temperature, and solve the phenomena of baking and hemming and bulging of the high-surface-density pole coil, thereby meeting the requirements of actual use.

Description

Lithium battery coating oven capable of preventing curling
Technical Field
The utility model relates to the technical field of batteries, in particular to a lithium battery coating oven capable of preventing curling.
Background
The lithium ion battery has the characteristics of high voltage, high specific energy and long service life, and has wide application in industries such as new energy vehicles, energy storage, portable electronic equipment and the like. Lithium ion batteries are used as secondary batteries, and work is mainly realized by means of lithium ions moving between a positive electrode and a negative electrode, namely, in the charging process, lithium ions are deintercalated and intercalated from the positive electrode to the negative electrode through an electrolyte, and in the discharging process, lithium ions are deintercalated and intercalated from the negative electrode to the positive electrode. In order to obtain a lithium ion battery with high performance and high interface quality, the prior process is particularly important.
At present, the lithium ion battery basically follows the process of slurry preparation and assembly after coating, and the coating is used as the first step of the process pole piece, so that the effect is important.
CN215656186U provides a lithium battery coating oven capable of avoiding the curling phenomenon caused by overdrying, but its function is limited to preventing the curling phenomenon caused by overdrying at the time of stopping. In the coating process, the pole piece with high surface density is baked, and the two lugs on the two sides of the pole roll are rolled up due to the stress difference caused by the difference of the water evaporation rates of the edge and the center. Meanwhile, the phenomenon of edge bulging caused by the difference of the water evaporation rates of the centers of the pole pieces also seriously affects the production of the pole pieces of the lithium battery and the performance of the subsequent battery core, and the serious edge bulging can cause uncontrollable problems such as the decline of the lithium precipitation cycle performance and the like, so that the practical use requirement is difficult to meet.
Disclosure of Invention
Based on the above, the embodiment of the utility model provides a lithium battery coating oven capable of preventing curling, which aims to solve the technical problems of the phenomena of curling and edge bulging of the existing high-surface-density pole piece baking pole piece. The utility model has simple structure, can effectively solve the problems of pole roll curling, edge bulging and the like of the high-surface-density pole piece baking, and well meets the requirements of actual use.
In order to achieve the above-mentioned purpose, an embodiment of the present utility model provides a lithium battery coating oven for preventing curling, which is suitable for pole curling, and includes a coater roller assembly, a plurality of support rollers and a multi-section oven body;
the coater roller assembly comprises a first coater roller and a second coater roller, and a plurality of sections of oven bodies are arranged between the first coater roller and the second coater roller; the support rollers are arranged in the oven body and are in one-to-one correspondence with the oven body;
a heat insulation plate is arranged between two adjacent oven bodies; each oven body comprises a plurality of partition areas partitioned by a plurality of heat insulation baffles, each heat insulation baffle is arranged in parallel, and each heat insulation baffle is perpendicular to the heat insulation plate.
As a preferred embodiment, the first coater roller and the second coater roller are symmetrically arranged; the support roller is arranged at the geometric center of the oven body. Like this for the backing roll can be fine for extremely rolling up and provide support, and the backing roll can apply the power to both sides to extremely rolling up simultaneously for extremely rolling up both sides and can be flattened, thereby effectively prevent extremely rolling up the condition of curling and drum limit.
As a preferable embodiment, the pole roll is arranged in the middle of the oven body, one end of the pole roll is arranged on the first coater roller, and the other end of the pole roll is arranged on the second coater roller; the pole roll is arranged on the supporting roller.
As a preferred embodiment, the height of the backup roll is greater than the height of the applicator roll assembly.
As a preferred implementation mode, the top of each partition area is provided with an air outlet communicated with the hot air duct, and the air outlets are arranged in one-to-one correspondence with the hot air duct. Therefore, the air outlet of each divided area is independently connected with different hot air channels, so that the baking temperatures of different divided areas can be independently controlled according to the actual use requirement.
As a preferable implementation mode, the bottom of each partition area is provided with an air inlet communicated with the hot air duct, and the air inlet is correspondingly arranged with the hot air duct. Therefore, the air inlets of each divided area are independently connected with different hot air channels, so that the baking temperatures of different divided areas can be independently controlled according to the actual use requirement.
As a preferred embodiment, a temperature sensor and an air frequency sensor are disposed in each of the divided regions. Therefore, in each oven body, the temperature and the air frequency of each divided area can be independently regulated, and the temperature and the air frequency of different divided areas can be accurately controlled for slurry coating with different surface densities and solid contents, so that the coating effect of the pole piece is well optimized, and the curling and edge-bulging conditions are improved.
As a preferred embodiment, each oven body comprises three dividing regions divided by two heat insulation baffles; the support roller is disposed on a middle divided region of the three divided regions.
According to the utility model, the oven body is divided into a plurality of divided areas, and the hot air duct, the temperature sensor and the air frequency sensor are respectively arranged in each divided area, so that the temperature and the air frequency of different divided areas can be independently regulated, the air frequency and the temperature can be accurately regulated, and the phenomenon of rolling up of two sides of a pole roll caused by the difference of the water evaporation rates of the edge and the center of a pole piece can be improved; meanwhile, the uncontrollable problems of lithium battery pole piece production, subsequent battery cell circulation lithium precipitation and the like due to the influence of edge bulging can be solved. The utility model has simple structure and can solve the problem of high surface density (larger than20g/cm 2 ) The phenomenon of baking and curling the pole coil can be used as a universal product for production and use.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram showing a front structure of a lithium battery coating oven for preventing curling according to an embodiment of the present utility model;
fig. 2 is a schematic top view of the anti-hemming lithium battery coating oven of fig. 1.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
At present, in the coating process, the pole piece with high surface density is baked, and the two side lugs of the pole roll are rolled up due to the stress difference caused by the difference of the evaporation rates of the edge and the center water. Meanwhile, the phenomenon of edge bulging caused by the difference of the water evaporation rates of the centers of the pole pieces also seriously affects the production of the pole pieces of the lithium battery and the performance of the subsequent battery core, and the serious edge bulging can cause uncontrollable problems such as the decline of the lithium precipitation cycle performance and the like, so that the practical use requirement is difficult to meet. Based on the above, the present utility model provides a lithium battery coating oven for preventing curling to solve the above technical problems.
Specifically, as shown in fig. 1 to 2, the embodiment of the present utility model provides a lithium battery coating oven for preventing curling, which is suitable for pole coil 10, and comprises a coater roller assembly 20, a plurality of support rollers 30 and a multi-section oven body 40;
the coater roller assembly 20 comprises a first coater roller 21 and a second coater roller 22, and a plurality of sections of the oven body 40 are arranged between the first coater roller 21 and the second coater roller 22; the support rollers 30 are arranged in the oven body 40, and the support rollers 30 are arranged in one-to-one correspondence with the oven body 40;
a heat insulation plate 50 is arranged between two adjacent oven bodies 40; each oven body 40 includes a plurality of dividing regions 42 divided by a plurality of heat insulation baffles 41, each heat insulation baffle 41 is disposed parallel to each other, and each heat insulation baffle 41 is disposed perpendicular to the heat insulation plate 50.
As a preferred embodiment, the first coater roller 21 and the second coater roller 22 are symmetrically disposed; the support roller 30 is disposed at the geometric center of the oven body 40. In this way, the support roller 30 can well provide support for the pole coil 10, and meanwhile, the support roller 30 can apply force to two sides of the pole coil 10, so that two sides of the pole coil 10 can be flattened, and the situation that the pole coil 10 is curled and hemmed is effectively prevented.
As a preferred embodiment, the pole roll 10 is disposed in the middle of the oven body 40, and one end of the pole roll 10 is disposed on the first coater roller 21, and the other end is disposed on the second coater roller 22; the pole roll 10 is arranged on the support roller 30.
In the embodiment of the present utility model, the oven body 40 is divided into an upper oven body portion and a lower oven body portion which are disposed in a matching manner, and the pole roll 10 is disposed between the upper oven body portion and the lower oven body portion. Therefore, hot air in the hot air duct is diffused onto the pole coil from bottom to top in the partition area, and flows out from the air outlet of the partition area after baking the pole coil.
As a preferred embodiment, the height of the backup roll 30 is greater than the height of the applicator roll assembly 20. In this way, the support roller 30 can be made to provide good support for the pole roll 10 while ensuring that the support roller 30 can apply a sideways force to the pole roll 10 so that the two sides of the pole roll 10 can be flattened.
As a preferred embodiment, an air outlet 421 is disposed at the top of each of the dividing regions 42 and is in communication with a hot air duct (not shown), and the air outlets 421 are disposed in one-to-one correspondence with the hot air ducts. In this way, the air outlet 421 of each divided area 42 is individually connected with different hot air channels, so as to individually control the baking temperatures of different divided areas 42 according to the actual use requirement.
As a preferred embodiment, an air inlet 422 is disposed at the bottom of each of the divided areas 42 and is in communication with the hot air duct, and the air inlet 422 is disposed corresponding to the hot air duct. In this way, the air inlet 422 of each divided area 42 is individually connected with different hot air channels, so that the baking temperatures of different divided areas 42 can be individually controlled according to the actual use requirement.
As a preferred embodiment, a temperature sensor (not shown) and an air frequency sensor (not shown) are disposed in each of the divided regions 42. In this way, in each oven body 40, the temperature and the air frequency of each divided area 42 can be independently adjusted, and for slurry coating with different surface densities and solid contents, the temperature and the air frequency of different divided areas 42 can be accurately controlled, so that the coating effect of the pole piece is well optimized, and the curling and the edge-bulging conditions are improved.
As a preferred embodiment, each of the oven bodies 40 comprises three dividing regions 42 divided by two heat insulating baffles 41; the support roller 30 is disposed on the middle divided region of the three divided regions 42.
According to the utility model, the oven body is divided into a plurality of divided areas, and the hot air duct, the temperature sensor and the air frequency sensor are respectively arranged in each divided area, so that the temperature and the air frequency of different divided areas can be independently regulated, the air frequency and the temperature can be accurately regulated, and the phenomenon of rolling up of two sides of a pole roll caused by the difference of the water evaporation rates of the edge and the center of a pole piece can be improved; at the same time alsoThe problem that lithium battery pole pieces are uncontrollable in production, subsequent battery cell circulation lithium precipitation and the like due to the influence of edge bulging can be solved. The utility model has simple structure and can solve the problem of high surface density (more than 20 g/cm) 2 ) The phenomenon of baking and curling the pole coil can be used as a universal product for production and use.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (8)

1. A lithium battery coating oven capable of preventing curling is characterized by being suitable for polar curling and comprising a coater roller assembly, a plurality of support rollers and a plurality of oven bodies;
the coater roller assembly comprises a first coater roller and a second coater roller, and a plurality of sections of oven bodies are arranged between the first coater roller and the second coater roller; the support rollers are arranged in the oven body and are in one-to-one correspondence with the oven body;
a heat insulation plate is arranged between two adjacent oven bodies; each oven body comprises a plurality of partition areas partitioned by a plurality of heat insulation baffles, each heat insulation baffle is arranged in parallel, and each heat insulation baffle is perpendicular to the heat insulation plate.
2. The anti-hemming lithium battery coating oven of claim 1 wherein the first coater roller and the second coater roller are symmetrically disposed; the support roller is arranged at the geometric center of the oven body.
3. The anti-hemming lithium battery coating oven of claim 2 wherein the pole roll is disposed in the middle of the oven body with one end of the pole roll disposed on the first coater roller and the other end disposed on the second coater roller; the pole roll is arranged on the supporting roller.
4. A hemming-prevented lithium battery coating oven according to claim 3 wherein the height of the support roller is greater than the height of the coater roller assembly.
5. The hemming-preventing lithium battery coating oven according to claim 1, wherein an air outlet communicated with a hot air duct is formed in the top of each of the divided areas, and the air outlets are arranged in one-to-one correspondence with the hot air duct.
6. The hemming-preventing lithium battery coating oven according to claim 5, wherein an air inlet communicating with the hot air duct is provided at the bottom of each of the divided regions, the air inlet being provided corresponding to the hot air duct.
7. The anti-hemming lithium battery coating oven of claim 1 wherein a temperature sensor and an air frequency sensor are disposed within each of the partitioned areas.
8. The hemming-prevented lithium battery coating oven of claim 1 wherein each oven body comprises three divided regions divided by two heat shield plates; the support roller is disposed on a middle divided region of the three divided regions.
CN202321041851.1U 2023-05-04 2023-05-04 Lithium battery coating oven capable of preventing curling Active CN219923560U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321041851.1U CN219923560U (en) 2023-05-04 2023-05-04 Lithium battery coating oven capable of preventing curling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321041851.1U CN219923560U (en) 2023-05-04 2023-05-04 Lithium battery coating oven capable of preventing curling

Publications (1)

Publication Number Publication Date
CN219923560U true CN219923560U (en) 2023-10-31

Family

ID=88486240

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321041851.1U Active CN219923560U (en) 2023-05-04 2023-05-04 Lithium battery coating oven capable of preventing curling

Country Status (1)

Country Link
CN (1) CN219923560U (en)

Similar Documents

Publication Publication Date Title
CN216120370U (en) Secondary battery's electric core and secondary battery
CN111816838A (en) Lithium ion battery positive plate and preparation method thereof and lithium ion battery
CN111540910A (en) Pole piece, battery core and battery
CN218360299U (en) Coating back roll assembly and coating system
WO2023138109A1 (en) Lithium-ion battery and power apparatus
CN113555522B (en) Pole piece and battery
CN219923560U (en) Lithium battery coating oven capable of preventing curling
CN214411250U (en) Negative pole piece and battery
EP4227621A1 (en) Drying device and electrode plate manufacturing apparatus
CN218482273U (en) Current collector, electrode and battery thereof
EP4279186A1 (en) Air discharge apparatus and drying device
CN115036587B (en) Single battery, battery pack and electric equipment
CN216719994U (en) Pole piece preparation mould, battery pole piece and battery
WO2023240482A1 (en) Electrode plate and manufacturing method therefor, electrode assembly, secondary battery, and electric apparatus
CN217405463U (en) Battery cell and battery module
CN211605265U (en) Low internal resistance lithium battery pole piece and cylindrical lithium battery
CN220253273U (en) Pole piece, battery core and lithium ion battery
CN220474664U (en) Foil, pole piece, battery cell, battery module and battery pack
CN220569731U (en) Negative electrode piece, lithium ion battery and electrochemical device
CN115881890B (en) Winding core, preparation method thereof and battery
CN220895544U (en) Electrode plate and lithium ion battery
CN218286814U (en) Concave-convex stripe pole piece rolling device
CN219393471U (en) Electrode assembly and battery
CN219642869U (en) Current collector, pole piece, battery cell, battery pack and electric equipment
CN112736275B (en) Winding equipment and positive pole piece processing method

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant