CN212339909U - Winding drum for drying pole roll of lithium ion power battery - Google Patents
Winding drum for drying pole roll of lithium ion power battery Download PDFInfo
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- CN212339909U CN212339909U CN202020819742.8U CN202020819742U CN212339909U CN 212339909 U CN212339909 U CN 212339909U CN 202020819742 U CN202020819742 U CN 202020819742U CN 212339909 U CN212339909 U CN 212339909U
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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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Abstract
The utility model discloses a winding drum for drying a lithium ion power battery pole roll, which is of a metal-plastic composite structure and comprises a metal drum and a wear-resistant plastic drum, wherein the outer diameter of the metal drum is not less than 200 mm; the wear-resistant plastic cylinder is embedded and fixed in the metal cylinder. The utility model discloses a dry drying effect that can guarantee the pole piece with the reel of lithium ion power battery pole book, improve the quality of pole piece, the security is good.
Description
Technical Field
The utility model belongs to the technical field of the dry technique of lithium ion power battery utmost point book and specifically relates to a dry reel of using of lithium ion power battery utmost point book is related to.
Background
At present, two preparation processes of laminated power battery pole pieces are mainly adopted, namely gap coating → continuous rolling → continuous slitting → die cutting → pole piece drying → laminating, and continuous coating → continuous rolling → continuous slitting → continuous baking of pole rolls → die cutting → laminating. The first process mainly has the following problems: firstly, the gap coating efficiency is low, and potential safety hazards exist when the head and the tail are thinned; secondly, rolling and extending are large, and capacity loss is large; thirdly, cutting a plurality of strips to increase the risk of edge burrs; fourthly, the die cutting efficiency is low; fifthly, the drying efficiency of the pole piece is low, and the utilization rate of equipment is low; the second process mainly has the following problems: firstly, the consistency of baking moisture of the polar roll is poor due to the fact that a plastic winding drum is adopted for winding; secondly, metal scraps are rubbed off from the interior of the winding drum due to the winding of the metal winding drum, so that the product safety is influenced; and thirdly, after the small-inner-diameter winding drum is subjected to die cutting, the pole piece is arched, and the pole piece sucker is easy to drop and scrap during lamination.
Patent CN209567672U discloses a winding drum capable of reducing wrinkling, and a certain improvement explanation is provided for pole piece rolling wrinkling; but can not meet the requirement of high-temperature baking of the pole roll.
Patent CN 208736060U discloses a polar coil drying device, six surfaces in an oven are heated simultaneously, a polar coil reel is heated, and a metal reel is selected as a reel; although the reel heating is increased, the potential safety hazard caused by metal friction powder falling brought by using a pure metal reel is not considered, and the influence of the size of the reel diameter on subsequent processing is not considered.
Patent CN 206160649U discloses a coil drying device, which focuses on the design of the oven working mode, and mentions the use of large-size reel; but no further description is made regarding moisture consistency and drying efficiency of the roll use; the actual production faces the productivity pressure, and the drying efficiency of the pole roll is higher.
At present, the winding drum for drying the pole roll of the lithium ion power battery comprises an engineering plastic winding drum and a metal winding drum. The engineering plastic winding drum has the problems that when the winding radius exceeds 300mm due to poor thermal conductivity, the temperature difference exists between the inner layer and the outer layer of the winding drum in the same baking process, the actually measured moisture is different, and the baking requirement cannot be met; the metal winding drum is adopted, and the problem that the inner wall is easy to rub off metal chips in the cutting, winding and carrying processes, so that the safety is influenced exists. In addition, above-mentioned two kinds of reels all have and are close to the inside pole piece crookedness of book core more big, lead to inside pole piece cross cutting back arching serious, influence the problem that the lamination used.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a lithium ion power battery utmost point rolls up drying reel, can guarantee the drying effect of pole piece, improves the quality of pole piece, and the security is good.
According to the utility model discloses lithium ion power battery utmost point rolls up dry reel of using, lithium ion power battery utmost point rolls up dry reel of using is metal-plastic composite structure, include:
the outer diameter of the metal cylinder is not less than 200 mm;
the wear-resistant plastic cylinder is embedded and fixed in the metal cylinder.
According to the winding drum for drying the lithium ion power battery pole roll, which is provided by the embodiment of the utility model, the winding drum for drying the lithium ion power battery pole roll is of a metal-plastic composite structure, and the wear-resistant plastic cylinder is embedded in the metal cylinder, so that the wear-resistant plastic cylinder can prevent the potential safety hazard caused by the friction of the metal powder during the processes of slitting, use, turnover, baking, die cutting, winding up, winding down and carrying of the drying winding drum, and effectively avoid the pollution of metal dust to the pole piece; the metal cylinder can ensure the consistency of heat conduction in the winding core, improve the heat conduction efficiency and avoid the inconsistent water content of the pole piece caused by uneven heat conduction; the metal cylinder is a large-size winding cylinder with the outer diameter not less than 200mm, so that the bending degree of the inner layer pole piece during winding can be effectively relieved, and the warping of the pole piece after die cutting forming is further improved. To sum up, the utility model discloses the dry drying effect of pole piece can be guaranteed to the dry reel of lithium ion power battery pole book, improves the quality of pole piece, and the security is good.
According to one embodiment of the utility model, a plurality of through grooves are arranged on the outer peripheral surface of the wear-resistant plastic cylinder and are distributed at intervals in the circumferential direction; the inner peripheral wall of the metal cylinder is provided with a plurality of boss plates which are distributed at intervals in the circumferential direction; the inner ends of the plurality of boss plates are correspondingly and fittingly embedded in the plurality of through grooves one by one, and the annular space between the inner peripheral wall of the metal cylinder and the outer peripheral wall of the wear-resistant plastic cylinder is partitioned into a plurality of first through holes by the plurality of boss plates.
According to a further embodiment of the present invention, the plurality of through grooves are evenly spaced in the circumferential direction; the plurality of boss plates are evenly spaced in the circumferential direction.
According to a further embodiment of the present invention, the number of through slots is 4-20, correspondingly, the number of boss plates is 4-20.
According to the utility model discloses further embodiment, logical groove is the dovetail.
According to a further embodiment of the present invention, the inner diameter of the wear-resistant plastic cylinder is 76mm to 152mm, and the wall thickness of the wear-resistant plastic cylinder is 8mm to 15 mm.
According to an embodiment of the present invention, the metal cylinder includes an outer metal cylinder, an inner metal cylinder and a support plate, the inner metal cylinder is located in the outer metal cylinder, the inner metal cylinder is spaced from the outer metal cylinder and supported and fixed by the support plates, and the support plates separate an annular space between an inner peripheral wall of the outer metal cylinder and an outer peripheral wall of the inner metal cylinder into a plurality of second through holes; the wear-resistant plastic cylinder is embedded in the inner metal cylinder.
According to the utility model discloses further embodiment, metal section of thick bamboo is integrative casting formed part.
According to the utility model discloses further embodiment, wear-resisting plastic cylinder with still adopt the fix with screw between the interior metal cylinder.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a winding drum for drying a lithium ion power battery pole roll according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a metal tube of a winding drum for drying a lithium ion power battery pole roll according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a wear-resistant plastic tube of a winding drum for drying a lithium ion power battery pole roll according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a lithium ion power battery pole roll drying reel according to another embodiment of the present invention.
Fig. 5 is a schematic structural view of a metal tube of a winding drum for drying a lithium ion power battery pole roll according to another embodiment of the present invention.
Reference numerals:
lithium ion power battery pole roll drying drum 1000
Wear-resistant plastic cylinder 2 through groove 21
First through hole 3
Second through hole 4
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
The following describes the lithium ion power battery pole roll drying drum 1000 according to an embodiment of the present invention with reference to fig. 1 to 5.
As shown in fig. 1 to 5, according to the winding drum 1000 for drying a lithium ion power battery pole roll of the embodiment of the present invention, the winding drum 1000 for drying a lithium ion power battery pole roll is a metal-plastic composite structure, and includes a metal cylinder 1 and a wear-resistant plastic cylinder 2, and the outer diameter of the metal cylinder 1 is not less than 200 mm; the wear-resistant plastic cylinder 2 is embedded in the metal cylinder 1.
According to the utility model discloses dry reel 1000 of lithium ion power battery pole roll, dry reel 1000 of lithium ion power battery pole roll is metal-plastic composite structure, inlays wear-resisting plastic cylinder 2 in metal cylinder 1, and wear-resisting plastic cylinder 2 can prevent that dry reel from cutting use, turnover, toast, cross cutting, roll up, roll down and carrying in-process rubs off metal powder and causes the potential safety hazard, effectively stops the pollution of metal dust to the pole piece; the metal cylinder 1 can ensure the consistency of heat conduction in the winding core, improve the heat conduction efficiency and avoid the inconsistent water content of the pole piece caused by uneven heat conduction; the metal cylinder 1 is a large-size winding cylinder with the outer diameter not less than 200mm, so that the bending degree of the inner layer pole piece during winding can be effectively relieved, and the warping of the pole piece after die cutting forming is further improved. To sum up, the utility model discloses the dry drying effect of pole piece can be guaranteed to lithium ion power battery pole book drying reel 1000, improves the quality of pole piece, and the security is good.
As shown in fig. 1 to 3, according to an embodiment of the present invention, a plurality of through grooves 21 are formed on the outer circumferential surface of the wear-resistant plastic cylinder 2, and the plurality of through grooves 21 are distributed at intervals in the circumferential direction; the inner peripheral wall of the metal cylinder 1 is provided with a plurality of boss plates 11, and the plurality of boss plates 11 are arranged in the radial direction and are distributed at intervals in the circumferential direction; the inner ends of the boss plates 11 are correspondingly and fittingly embedded in the through grooves 21, and the annular space between the inner peripheral wall of the metal cylinder 1 and the outer peripheral wall of the wear-resistant plastic cylinder 2 is partitioned into the first through holes 3 by the boss plates 11. It can be understood that, through inlaying the inner one-to-one adaptation ground of a plurality of boss board 11 in a plurality of logical grooves 21, can be with conveniently inlaying wear-resisting plastic cylinder 2 in metal cylinder 1, it is fixed reliable, a plurality of boss board 11 separate into a plurality of first through-holes 3 with the annular space between the internal perisporium of metal cylinder 1 and the periphery wall of wear-resisting plastic cylinder 2, first through-hole 3 helps the hot-blast in the oven to pass through, the heat conduction efficiency is improved, be favorable to thermal conduction and dispersion, can effectively guarantee the uniformity of stoving temperature.
According to a further embodiment of the present invention, the plurality of through grooves 21 are evenly spaced in the circumferential direction; the boss plates 11 are evenly spaced in the circumferential direction. Therefore, the winding drum 1000 for drying the pole roll of the lithium ion power battery is reasonable in structure, and the consistency of the baking temperature is further ensured.
According to a further embodiment of the present invention, the number of through slots 21 is 4-20, correspondingly, the number of boss plates 11 is 4-20. It is understood that the number of the through slots 21 may be 4, 8 (as shown in fig. 1 to 3), 12 or 20, and correspondingly, the number of the boss plates 11 may be 4, 8, 12 or 20, so that the wear-resistant plastic cylinder 2 and the metal cylinder 1 are firmly fixed and have good structural support strength, and the number of the through slots 21 and the number of the boss plates 11 are selected according to actual needs.
According to the utility model discloses further embodiment, logical groove 21 is the dovetail. Therefore, the boss plate 11 and the through groove 21 can be firmly embedded, the abrasion-resistant plastic cylinder 2 and the metal cylinder 1 are prevented from shifting, and the safety is good.
According to a further embodiment of the present invention, the inner diameter of the wear-resistant plastic cylinder 2 is 76mm to 152mm, and the wall thickness of the wear-resistant plastic cylinder 2 is 8mm to 15 mm. Specifically, the inner diameter of the wear-resistant plastic cylinder 2 may be 76mm, 114mm or 152mm, the wall thickness of the wear-resistant plastic cylinder 2 may be 8mm, 11mm or 15mm, and the inner diameter of the wear-resistant plastic cylinder 2 and the wall thickness of the wear-resistant plastic cylinder 2 are selected according to actual needs.
As shown in fig. 4 and 5, according to another embodiment of the present invention, the metal cylinder 1 includes an outer metal cylinder 12, an inner metal cylinder 13 and a support plate 14, the inner metal cylinder 13 is located in the outer metal cylinder 12, the inner metal cylinder 13 is spaced from the outer metal cylinder 12 and is supported and fixed by the plurality of support plates 14, the plurality of support plates 14 partition an annular space between an inner circumferential wall of the outer metal cylinder 12 and an outer circumferential wall of the inner metal cylinder 13 into a plurality of second through holes 4; the wear-resistant plastic cylinder 2 is embedded in the inner metal cylinder 13. It can be understood that the metal cylinder 1 can ensure the consistency of heat conduction inside the winding core, improve the heat conduction efficiency, avoid the inconsistency of moisture of the pole piece caused by uneven heat conduction, and the second through holes 4 are beneficial to the passing of hot air in the oven, improve the heat conduction efficiency, be beneficial to the heat conduction and dispersion, and can effectively ensure the consistency of the baking temperature; the wear-resistant plastic cylinder 2 is embedded in the inner metal cylinder 13, so that potential safety hazards caused by the friction of metal powder during the processes of slitting, using, transferring, baking, die cutting, coiling, uncoiling and carrying of the winding drum can be prevented, the pollution of metal dust to the pole piece is effectively avoided,
according to a further embodiment of the invention, the metal cylinder 1 is an integrally cast part. Thus, the metal cylinder 1 is simple to manufacture and convenient to process.
According to a further embodiment of the present invention, the wear-resistant plastic cylinder 2 and the inner metal cylinder 13 are fixed by screws. It can be understood that the wear-resistant plastic cylinder 2 and the inner metal cylinder 13 are reliably fixed by the screws, and the wear-resistant plastic cylinder 2 and the metal cylinder 1 can be prevented from being displaced in the working process to influence the normal work.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a dry reel of using of lithium ion power battery pole book which characterized in that, dry reel of using of lithium ion power battery pole book is metal-plastic composite construction, includes:
the outer diameter of the metal cylinder is not less than 200 mm;
the wear-resistant plastic cylinder is embedded and fixed in the metal cylinder.
2. The winding drum for drying the pole roll of the lithium-ion power battery as claimed in claim 1, wherein a plurality of through grooves are formed in the outer circumferential surface of the wear-resistant plastic drum, and the through grooves are distributed at intervals in the circumferential direction; the inner peripheral wall of the metal cylinder is provided with a plurality of boss plates which are distributed at intervals in the circumferential direction; the inner ends of the plurality of boss plates are correspondingly and fittingly embedded in the plurality of through grooves one by one, and the annular space between the inner peripheral wall of the metal cylinder and the outer peripheral wall of the wear-resistant plastic cylinder is partitioned into a plurality of first through holes by the plurality of boss plates.
3. The winding drum for drying a lithium ion power battery pole roll according to claim 2, wherein the plurality of through grooves are uniformly spaced in a circumferential direction; the plurality of boss plates are evenly spaced in the circumferential direction.
4. The lithium-ion power battery pole roll drying reel as claimed in claim 2, wherein the number of the through grooves is 4-20, and correspondingly, the number of the boss plates is 4-20.
5. The lithium ion power battery pole roll drying drum as claimed in claim 2, wherein the through groove is a dovetail groove.
6. The winding drum for drying the pole roll of the lithium-ion power battery as claimed in claim 2, wherein the inner diameter of the wear-resistant plastic drum is 76 mm-152 mm, and the wall thickness of the wear-resistant plastic drum is 8 mm-15 mm.
7. The winding drum for drying the pole roll of the lithium-ion power battery as claimed in claim 1, wherein the metal drum comprises an outer metal drum, an inner metal drum and a support plate, the inner metal drum is positioned in the outer metal drum, the inner metal drum and the outer metal drum are spaced apart from each other and supported and fixed by a plurality of support plates, and the plurality of support plates divide an annular space between the inner peripheral wall of the outer metal drum and the outer peripheral wall of the inner metal drum into a plurality of second through holes; the wear-resistant plastic cylinder is embedded in the inner metal cylinder.
8. The lithium ion power battery pole winding drying reel of claim 7, wherein the metal tube is an integrally cast molding piece.
9. The lithium ion power battery pole roll drying reel as claimed in claim 7, wherein the wear-resistant plastic tube and the inner metal tube are fixed by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020819742.8U CN212339909U (en) | 2020-05-15 | 2020-05-15 | Winding drum for drying pole roll of lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020819742.8U CN212339909U (en) | 2020-05-15 | 2020-05-15 | Winding drum for drying pole roll of lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212339909U true CN212339909U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020819742.8U Expired - Fee Related CN212339909U (en) | 2020-05-15 | 2020-05-15 | Winding drum for drying pole roll of lithium ion power battery |
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| CN (1) | CN212339909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357878A (en) * | 2021-05-31 | 2021-09-07 | 浙江超恒动力科技有限公司 | Battery cell dewatering method |
| CN113432380A (en) * | 2021-06-04 | 2021-09-24 | 昆山聚创新能源科技有限公司 | Pole roll baking method and pole roll baking carrier |
-
2020
- 2020-05-15 CN CN202020819742.8U patent/CN212339909U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357878A (en) * | 2021-05-31 | 2021-09-07 | 浙江超恒动力科技有限公司 | Battery cell dewatering method |
| CN113357878B (en) * | 2021-05-31 | 2022-05-24 | 浙江超恒动力科技有限公司 | Battery cell dewatering method |
| CN113432380A (en) * | 2021-06-04 | 2021-09-24 | 昆山聚创新能源科技有限公司 | Pole roll baking method and pole roll baking carrier |
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Granted publication date: 20210112 Termination date: 20210515 |