CN215236887U - Roller passing mechanism and pole piece processing equipment - Google Patents
Roller passing mechanism and pole piece processing equipment Download PDFInfo
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- CN215236887U CN215236887U CN202121039496.5U CN202121039496U CN215236887U CN 215236887 U CN215236887 U CN 215236887U CN 202121039496 U CN202121039496 U CN 202121039496U CN 215236887 U CN215236887 U CN 215236887U
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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 application discloses cross roller mechanism and pole piece processing equipment. The utility model provides a cross roller mechanism and be used for conveying the pole piece that has main part and utmost point ear, including interior roller and outer roller, outer roller cover is located outside the roller, and with interior roller rotation connection, the outer roller includes conveying part and dodges the portion, conveying part all is the cylindric with dodge the portion, the radius of dodging the portion is less than the radius of conveying part, conveying part can laminate with the main part, with the conveying pole piece, dodge the portion and can dodge utmost point ear, dodge the circumferencial direction of portion and seted up the absorption hole, the cross roller mechanism of this application can make utmost point ear to the direction emergence elastic deformation of dodging the portion towards the orientation, can avoid utmost point ear to take place to stick up and turn over the book to the direction of keeping away from dodging the portion, thereby avoid taking place fracture or tear in the pole piece data send process, the pole piece processing equipment that has the above-mentioned roller mechanism can improve the performance of pole piece.
Description
Technical Field
The application relates to the field of battery pole piece production equipment, in particular to a roller passing mechanism and pole piece processing equipment.
Background
In the field of lithium ion batteries, a tab is one of indispensable structures of the lithium ion batteries, the tab plays a role of a bridge for outputting lithium ion energy to the outside, and the performance and safety of the lithium battery are obviously influenced by the electric conductivity, the heat conductivity, the mechanical strength and the like of the tab. In the field of high energy density power batteries, batteries with a multi-tab structure are the most common structure. In the production process of multi-tab battery, can cut the utmost point ear, cut the utmost point piece, at high-speed coiling in-process, because the utmost point ear material is copper foil or the aluminium foil that thickness is less than 20 microns, the texture is soft, easy atress warp, utmost point ear when the rolling with unreel the in-process roller, receive the tension of roller and the resistance of air, very easily can lead to utmost point ear to rise to stick up and turn over a book, it can appear damaged and tearing with the utmost point ear of turning over a book in further production process to rise to stick up, seriously influence electric conductive property and the security performance of battery.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a roll mechanism, which can effectively reduce the situation that the pole lug part is raised or folded in the transmission process of the pole piece.
The application still provides a pole piece processing equipment who has above-mentioned roller mechanism of crossing.
According to the roller mechanism of the first aspect embodiment of this application for conveying the pole piece that has main part and ear of a pole, its characterized in that includes:
an inner roll shaft;
the outer roller is sleeved outside the inner roller shaft and is in rotating connection with the inner roller shaft, the outer roller comprises a conveying part and an avoiding part, the radius of the avoiding part is smaller than that of the conveying part, the conveying part can be attached to the main body part to convey the pole piece, and the avoiding part can avoid the pole lug part; the circumference direction of the avoiding part is provided with an adsorption hole.
According to the roller mechanism of the embodiment of the application, at least the following beneficial effects are achieved: because the radius of dodging the portion is less than the radius of transfer portion, consequently, at the in-process that the pole piece conveyed, dodge the portion not with utmost point ear portion contact, can not exert the holding power for utmost point ear portion, consequently, can effectually avoid utmost point ear portion to taking place the perk and turn over the book to the direction of keeping away from dodging the portion. In addition, set up in the adsorption hole of dodging the portion and can also provide the adsorption affinity to utmost point ear, can make utmost point ear can take place elastic deformation to the surface direction of dodging the portion towards, can be more one-step avoid utmost point ear to take place the perk and turn over the book to the direction of keeping away from dodging the portion, the adsorption hole can also be with crossing the metal dust that the roller in-process produced and inhale away to avoid the dust to fall on the utmost point piece, influence the performance of pole piece, and then influence the security performance of battery.
According to some embodiments of the application, follow the axis direction of dodging the portion is provided with more than two the adsorption hole, every row the adsorption hole all follows the circumferencial direction equipartition setting of dodging the portion.
According to some embodiments of the present application, the inner roller shaft is a hollow shaft for communicating the adsorption hole with an external vacuum apparatus.
According to some embodiments of the present application, the transfer portion and the avoidance portion are of a unitary structure.
According to some embodiments of the application, the transition portion is connected to the bypass portion by a chamfer transition.
According to some embodiments of the application, a difference between a radius of the avoidance portion and a radius of the conveying portion is less than or equal to 2 mm.
According to some embodiments of the application, dodge the portion and be used for through the adsorption hole adsorbs utmost point ear portion is kept away from the one end of main part, the chamfer is used for keeping away from the root of utmost point ear portion.
According to the second aspect embodiment of the application, the pole piece processing equipment comprises the roll passing mechanism of the first aspect embodiment.
According to some embodiments of the present application, the pole piece processing apparatus is a pole piece winding apparatus, comprising,
the first unwinding mechanism is used for releasing the positive pole piece;
the second unwinding mechanism is used for releasing the negative pole piece;
the membrane unwinding mechanism is used for releasing the membrane;
the winding needle is used for winding the positive pole piece, the negative pole piece and the diaphragm;
the roller passing mechanisms are arranged between the first unwinding mechanism and the winding needle and between the second unwinding mechanism and the winding needle.
According to some embodiments of the present application, the pole piece processing equipment is tab cutting equipment or pole piece slitting equipment.
Additional aspects and advantages of the present application 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 present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic diagram illustrating a state of pole pieces conveyed by a roller mechanism in an embodiment of the present application;
FIG. 2 is another angle structure diagram of FIG. 1;
FIG. 3 is a cross-sectional view of a roller mechanism in an embodiment of the present application;
FIG. 4 is an enlarged view taken at I in FIG. 3;
FIG. 5 is a schematic view of a pole piece winding apparatus according to an embodiment of the present application.
Reference numerals:
the conveying part 121 of the inner roller shaft 110 and the outer roller 120 of the roller mechanism 100 is provided with an avoiding part 122 and a suction hole 123 and a chamfer 124;
the first unwinding mechanism 300 and the second unwinding mechanism 400 wind the needle 500.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," 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 present application. 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.
The following describes a roller passing mechanism 100 according to an embodiment of the first aspect of the present application with reference to the drawings.
Specifically, as shown in fig. 1 and fig. 2, the pole piece 200 of the present application is a multi-tab pole piece, and includes a main body portion 210 and a plurality of pole tab portions 220 connected to the main body portion 210, where the plurality of pole tabs 220 are arranged at intervals along a length direction of the pole piece 200.
As shown in fig. 3, the roller passing mechanism 100 includes an inner roller shaft 110 and an outer roller 120, the outer roller 120 is sleeved outside the inner roller shaft 110, and the outer roller 120 is rotatably connected to the inner roller shaft 110 through a bearing. The outer roller 120 includes a conveying portion 121 and a relief portion 122, both the conveying portion 121 and the relief portion 122 have a cylindrical structure, and the relief portion 122 is provided in close proximity to one end of the conveying portion 121. The main body portion 210 of the pole piece 200 is attached to the surface of the conveying portion 121 of the outer roller 120, the tab portion 220 of the pole piece 200 corresponds to the escape portion 122 of the outer roller 120, and the radius of the escape portion 122 is smaller than that of the conveying portion 121, so that the tab portion 220 is suspended from the escape portion 122, that is, the escape portion 122 does not contact the tab portion 220. During the transportation of the pole piece 200, the main body portion 210 of the pole piece 200 is attached to the surface of the transportation portion 121 of the outer roller 120, and the outer roller 120 rotates relative to the inner roller shaft 110, thereby reducing the friction between the outer roller 120 and the main body portion 210 of the pole piece 200. Because pole lug 220 is suspended relative to avoiding portion 122 in the process of pole piece 200 conveying, avoiding portion 122 does not contact pole lug 220 and does not generate a supporting force for pole lug 220 in the process of pole piece 200 conveying, so that it can be avoided that pole lug 220 is bent towards the direction far away from outer roller 120 due to the centrifugal force of outer roller 120 under the condition that the rotating speed of outer roller 120 is high. In addition, the circumferential direction of the avoiding portion 122 is provided with the plurality of adsorption holes 123, the adsorption holes 123 are communicated with an external vacuum pump, so that the avoiding portion 122 can become a negative pressure adsorption device, the avoiding portion 122 can provide adsorption force for the tab portion 220 corresponding to the avoiding portion 122, the tab portion 220 can bend towards the avoiding portion 122 and elastically deform, further, the movement of the tab portion 220 towards the direction away from the avoiding portion 122 can be inhibited, after the pole piece 200 moves along the moving direction, the tab portion 220 is no longer under the action of the adsorption force of the avoiding portion 122, and the tab portion 220 can be restored to be flush with the main body portion 210. When the pole piece 200 is in the process of passing the roller, metal dust generated by collision or friction can be sucked away by the air flow through the adsorption hole 123, and the influence of the splashing of the metal dust on the performance of the pole piece 200 in the process of passing the roller by the pole piece 200 can be reduced.
In order to make the tab portion 220 receive uniform adsorption force, in some specific embodiments, two or more rows of the adsorption holes 123 are disposed along the axial direction of the avoiding portion 122, and each row of the adsorption holes 123 is uniformly distributed along the circumferential direction of the avoiding portion 122. Specifically, as shown in fig. 3, a plurality of rows of the adsorption holes 123 are provided along the axial direction of the avoiding portion 122, the number of rows of the adsorption holes 123 is set according to the length of the avoiding portion 122, and each row of the adsorption holes 123 is uniformly distributed along the circumferential direction of the avoiding portion 122. The adsorption holes 123 are formed in the above mode, so that the pole lugs 220 of different specifications (the distance between the adjacent pole lug parts 220 of the pole lugs 200 of different specifications is different) can be subjected to uniform adsorption force in the conveying process, and the influence on the performance of the pole lugs 200 caused by the fact that the pole lugs are bent or torn due to uneven stress of the pole lugs 220 is reduced.
In some embodiments of the present application, the inner roller shaft 110 is a hollow shaft, and the inner roller shaft 110 is used to communicate the plurality of suction holes 123 with an external vacuum device. Specifically, the right end of the inner roller shaft 110 is connected to an external vacuum device (not shown). The external vacuum device may be a small vacuum pump; or a vacuum pipe of a factory, and the right end of the inner roll shaft 110 is connected with the vacuum pipe of the factory through a hose. Through the above arrangement mode, when the external vacuum equipment starts to work, the tab part 220 of the pole piece 200 receives the adsorption force, and the tab part 220 elastically deforms towards the avoiding part 122 under the action of the adsorption force, so that the tab part 220 can be prevented from bending towards the direction away from the avoiding part 122.
In some embodiments of the present application, the transmitting portion 121 and the avoiding portion 122 are of an integral structure, and an annular groove may be formed on the left side of the outer roller 120 (i.e., at a position corresponding to the pole ear portion 220 of the pole piece 200) by milling in the circumferential direction, and the annular groove is the avoiding portion 122, so that the avoiding portion 122 and the transmitting portion 121 are of an integral structure.
In some embodiments of the present application, the transmitting portion 121 and the avoiding portion 122 are transitionally connected by a chamfer 124. Specifically, as shown in fig. 3 and 4, the avoiding portion 122 is disposed at the left end of the conveying portion 121, and an edge of the left end portion of the conveying portion 121 is provided with a chamfer 124, that is, the right end portion of the avoiding portion 122 and the left end portion of the conveying portion 121 are structurally and transitionally connected through the chamfer 124. The chamfer 124 keeps a small distance from the main body part 210 of the pole piece 200, the left end part of the transmission part 121 does not apply stress to the main body part 210 of the pole piece 200 in the process that the pole piece 200 passes through the roller, and the main body part 210 and the chamfer 124 do not have stress concentration at the corresponding position of the main body part 210 and the chamfer 124 in the process that the outer roller 120 rotates at high speed, so that the possibility that the main body part 210 is cut or punctured by the edge of the end part of the transmission part 121 can be effectively reduced, the safety of the pole piece 200 in the transmission process can be improved, and the structural integrity of the pole piece 200 is further ensured. The chamfer 124 may be a chamfered configuration as shown in fig. 3, it being understood that the chamfer 124 may also be a radiused configuration.
In some embodiments of the present application, the radius of the bypass portion 122 differs from the radius of the transmitting portion 121 by less than or equal to 2 mm. The difference between the radius of the avoiding part 122 and the radius of the conveying part 121 is less than or equal to 2 mm. If the radius difference between the avoiding portion 122 and the transmitting portion 121 is too large, and the size of the chamfer 124 is correspondingly increased, accordingly, the area of the transmitting portion 121 supporting the main body portion 210 becomes smaller, correspondingly, the area of the main body portion 210 in suspension becomes larger, the main body portion 210 is not sufficiently supported, and the main body portion 210 may sag under the action of gravity, so that the main body portion 210 in suspension may wrinkle or tear, and the performance of the pole piece 200 may be affected. When the difference between the radius of the avoiding portion 122 and the radius of the transmitting portion 121 is less than or equal to 2mm and the transmitting portion 121 and the avoiding portion 122 are transitionally connected through the chamfer 124, the avoiding portion 122 can avoid the pole ear portion 220 and simultaneously enable the transmitting portion 121 to have a sufficient area to support the main body portion 210, and can avoid the end portion of the transmitting portion 121 from cutting or puncturing the main body portion 210, so that the structural integrity or safety of the pole piece 200 can be improved in the transmitting process of the pole piece 200.
In some embodiments of the present disclosure, the avoiding portion 122 is used for absorbing an end of the pole ear portion 220 far away from the main body portion 210 through the absorbing hole 123, and the chamfer 124 is used for avoiding a root of the pole ear portion 220.
Specifically, as shown in fig. 3 and 4, when the one end that main part 210 was kept away from to utmost point ear part 220 was adsorbed by adsorption hole 123, the root of utmost point ear part 220 was unsettled and is located the top of chamfer 124, thereby avoid the root of utmost point ear part to excessively buckle in the position of chamfer 124, guarantee that utmost point ear part 220 dodges portion 122 and takes place elastic deformation towards under the effect of adsorption force, after pole piece 200 removed along the tape transport direction, utmost point ear part 220 department no longer received dodge portion 122 effect of adsorption force, thereby utmost point ear part 220 can resume and keep flushing with main part 210.
According to the second aspect of the application, the pole piece processing equipment comprises the roller passing mechanism of the first aspect of the application. By arranging the roller mechanism 100 in the pole piece processing equipment, the performance of the pole piece can be improved in the processing process of the pole piece.
In some embodiments of the present application, the pole piece processing apparatus is a pole piece winding apparatus, configured to wind a pole piece, as shown in fig. 5, and includes a first unwinding mechanism 300, a second unwinding mechanism 400, and a diaphragm unwinding mechanism (not shown in the figure), where a pole piece 200 released by the first unwinding mechanism 300 is a positive pole piece, a pole piece 200 released by the second unwinding mechanism 400 is a negative pole piece, and the diaphragm unwinding mechanism is configured to release a diaphragm; the positive pole piece, the negative pole piece and the diaphragm are wound together under the action of the winding needle 500 to form a winding core structure, and in the winding core structure, the diaphragm is located between the positive pole piece and the negative pole piece. In order to enable the tab portions 220 to be bent or torn in the process of transmitting the positive and negative electrode plates, the roller passing mechanisms 100 are respectively arranged between the first unwinding mechanism 300 and the winding needle 500 and between the second unwinding mechanism 400 and the winding needle 500. 3 roller passing mechanisms 100 are arranged between the first unreeling mechanism 300 and the reeling needle 500, and 3 roller passing mechanisms 100 are arranged between the second unreeling mechanism 400 and the reeling needle 500. It is understood that the number of the roller mechanisms 100 can be set according to actual requirements. Through the above setting mode, can avoid taking place to buckle or tear and then can improve the performance of rolling up core structure among the pole piece data send process.
In some embodiments of the present application, the pole piece processing equipment is tab cutting equipment or pole piece slitting equipment. Through set up roller mechanism 100 in utmost point ear cutting equipment or pole piece cutting equipment and convey the pole piece, can avoid the pole ear portion of pole piece to take place to buckle or tear at the in-process of conveying, and then improve the quality of pole piece.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. Roller mechanism for the transmission has the pole piece of main part and utmost point ear portion, its characterized in that includes:
an inner roll shaft;
the outer roller is sleeved outside the inner roller shaft and is in rotating connection with the inner roller shaft, the outer roller comprises a conveying part and an avoiding part, the conveying part and the avoiding part are cylindrical, the radius of the avoiding part is smaller than that of the conveying part, the conveying part can be attached to the main body part to convey the pole piece, and the avoiding part can avoid the pole lug part; the circumference direction of the avoiding part is provided with an adsorption hole.
2. A roller mechanism according to claim 1, wherein: follow the axis direction of dodging the portion is provided with more than two the adsorption holes, every row the adsorption holes all follows the circumferencial direction equipartition setting of dodging the portion.
3. A roller mechanism according to claim 1, wherein the inner roller shaft is a hollow shaft, and the inner roller shaft is used for communicating the adsorption hole with an external vacuum device.
4. A roller mechanism according to claim 1, wherein the conveying portion and the avoiding portion are of an integral structure.
5. A roller mechanism according to claim 4, wherein the conveying portion and the avoiding portion are in transition connection through a chamfer.
6. A roller mechanism according to claim 5, wherein the radius of the avoiding portion differs from the radius of the conveying portion by less than or equal to 2 mm.
7. A roller mechanism according to claim 5, wherein the avoiding portion is used for adsorbing one end, far away from the main body portion, of the pole lug portion through the adsorption hole, and the chamfer is used for avoiding the root of the pole lug portion.
8. Pole piece processing equipment, characterized by, includes the roller mechanism of any one of claims 1 to 7.
9. The pole piece processing apparatus of claim 8, wherein the pole piece processing apparatus is a pole piece winding apparatus comprising,
the first unwinding mechanism is used for releasing the positive pole piece;
the second unwinding mechanism is used for releasing the negative pole piece;
the membrane unwinding mechanism is used for releasing the membrane;
the winding needle is used for winding the positive pole piece, the negative pole piece and the diaphragm;
the roller passing mechanisms are arranged between the first unwinding mechanism and the winding needle and between the second unwinding mechanism and the winding needle.
10. The pole piece processing equipment of claim 8, wherein the pole piece processing equipment is tab cutting equipment or pole piece slitting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121039496.5U CN215236887U (en) | 2021-05-14 | 2021-05-14 | Roller passing mechanism and pole piece processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121039496.5U CN215236887U (en) | 2021-05-14 | 2021-05-14 | Roller passing mechanism and pole piece processing equipment |
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| Publication Number | Publication Date |
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| CN215236887U true CN215236887U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121039496.5U Active CN215236887U (en) | 2021-05-14 | 2021-05-14 | Roller passing mechanism and pole piece processing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137724A1 (en) * | 2022-01-21 | 2023-07-27 | 宁德时代新能源科技股份有限公司 | Electrode plate conveying mechanism and electrode plate formation system |
-
2021
- 2021-05-14 CN CN202121039496.5U patent/CN215236887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137724A1 (en) * | 2022-01-21 | 2023-07-27 | 宁德时代新能源科技股份有限公司 | Electrode plate conveying mechanism and electrode plate formation system |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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