CN217858013U - Lithium battery pole piece calendering device and pole piece blank area calendering assembly thereof - Google Patents
Lithium battery pole piece calendering device and pole piece blank area calendering assembly thereof Download PDFInfo
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- CN217858013U CN217858013U CN202221147745.7U CN202221147745U CN217858013U CN 217858013 U CN217858013 U CN 217858013U CN 202221147745 U CN202221147745 U CN 202221147745U CN 217858013 U CN217858013 U CN 217858013U
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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 relates to a lithium battery pole piece calendering device and pole piece blank area calendering component thereof in the technical field of battery core preparation, which comprises two groups of calendering rollers with the same structure, wherein each calendering roller comprises a roller and a wheel tooth; the gear teeth are in a ring structure formed by sequentially connecting a plurality of same teeth, the intervals of the teeth on the gear teeth are equal, the tooth surfaces of the teeth are arc surfaces, and the gear teeth are sleeved on the roller; the two groups of calendering rollers are arranged in a manner that the teeth are mutually meshed, and a lithium battery pole piece blank area passes through the two groups of teeth and extends through the mutual meshing of the two groups of teeth. The utility model discloses a calendering mode replaces traditional tensile mode to reduce the atress that utmost point ear remained white district for it reaches the extension effect to stay white district under the less tensile condition of use, has solved the technical problem in frequent disconnected area.
Description
Technical Field
The utility model relates to an electricity core preparation technical field specifically, relates to a lithium battery pole piece calendering device and pole piece blank area calendering subassembly thereof.
Background
The lithium battery pole piece is firstly subjected to a homogenate procedure to prepare slurry meeting the process requirements, and then subjected to a coating procedure. The extrusion type probe is used for spraying the extrusion type probe on the surface of an aluminum foil current collector, a coating pole coil is prepared after drying of an oven, the porosity of a pole piece is large at the moment, so that the energy density of a battery is further improved by compacting through a rolling procedure, but the coating area extends in the rolling process, the aluminum foil current collector does not extend and can generate root wrinkles, the current common process for avoiding the defects is a ping process and an IHA process for eliminating stress on the current collector in the rolling process, and the synchronous extension of the current collector is ensured.
However, when the aluminum foil current collector needs to be extended more, abnormal tape breakage frequently occurs in the production process due to factors such as excessive tension applied to the electrode plate, poor compatibility with the aluminum foil current collector and the like in the production process by adopting the process, and the direct cost loss caused by single abnormal tape breakage is about 100 ten thousand. Therefore, the problem of belt breakage when the aluminum foil current collector needs to be extended more is a technical problem to be solved urgently.
Through the search of the prior art, the patent of the utility model discloses a lithium battery pole piece rolling device with patent publication number CN212708163U, which comprises a non-coating area magnetic induction heating mechanism, a non-coating area rolling mechanism, a preheating roll, a hot roll and a non-coating area stretching mechanism which are sequentially arranged between an unreeling mechanism and a reeling mechanism; the magnetic induction heating mechanism of the non-coating area is used for rapidly heating the foil material of the non-coating area of the pole piece through electromagnetic induction; the non-coating area rolling mechanism is used for rolling the heated non-coating area foil of the pole piece; the preheating roller is used for preheating a coating area and a non-coating area of the pole piece; the hot roller is used for carrying out hot rolling on the film coating area and the non-film coating area of the preheated pole piece; and the non-coating area stretching mechanism is used for stretching the non-coating area foil of the pole piece after hot rolling so as to enable the coating area and the non-coating area to be consistent in extension, thereby eliminating the wrinkles of the pole piece. The utility model discloses a technique still has above-mentioned technical problem.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a lithium battery pole piece calendering device and pole piece blank area calendering subassembly thereof.
According to the utility model provides a lithium battery pole piece blank area calendering assembly, which comprises two groups of calendering rollers with the same structure, wherein each calendering roller comprises a roller and a gear tooth;
the gear teeth are in a ring structure formed by sequentially connecting a plurality of same teeth, the intervals of the teeth on the gear teeth are equal, the tooth surfaces of the teeth are arc surfaces, and the gear teeth are sleeved on the roller;
the two groups of calendering rollers are arranged in a mode that the teeth are mutually meshed, and a lithium battery pole piece blank area passes through the two groups of teeth and extends through the mutual meshing of the two groups of teeth.
In some embodiments, the number of the gear teeth installed on the drum is 1 or more.
In some embodiments, the material of the gear teeth is alloy steel or tungsten steel, and the surface of the gear teeth is provided with a wear-resistant coating.
In some embodiments, the surface of the teeth is polished, and the surface roughness of the teeth is less than or equal to Ra0.02.
In some embodiments, the gear teeth are fixedly connected to the drum in an engagement manner.
In some embodiments, the drum is a hollow cylinder, and the cavity of the drum is sleeved with a heating roller.
In some embodiments, the material of the drum is copper, a copper alloy, or an aluminum alloy.
In some embodiments, the heated roller is an electromagnetically heated roller.
In some embodiments, the roller and the heating roller are integrally connected by gluing.
The utility model also provides a lithium battery pole piece calendering device, which adopts the lithium battery pole piece blank area calendering component, and also comprises a roller mechanism and a tension swing roller mechanism, wherein two groups of calendering rollers are arranged between the roller mechanism and the tension swing roller mechanism;
the lithium battery pole piece sequentially passes through the roller mechanism, the lithium battery pole piece blank area calendering assembly and the tension swing roller mechanism.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a calendering mode replaces traditional tensile mode to reduce the atress that utmost point ear remained white district for it reaches the extension effect to stay white district under the less tensile condition of use, has solved the technical problem in frequent disconnected area.
2. The utility model discloses a the teeth of a cogwheel fasten on the cylinder with the mode of scarf joint for the teeth of a cogwheel does not have mutual aversion with the cylinder when keeping white district to lithium battery pole piece and carrying out the calendering action, ensures to keep the calendering effect in white district to lithium battery pole piece.
3. The utility model discloses a set up the warming mill in the calendering gyro wheel for centre gripping lithium battery sheet's calendering gyro wheel can effectively reduce lithium battery sheet's water content under the heat transfer of warming mill, thereby further reduces the problem that the battery performance that leads to because of water content is too high among the lithium battery sheet descends.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a structural diagram of the assembling relationship of the calendering components in the blank area of the lithium battery pole piece of the present invention;
fig. 2 is the utility model discloses lithium battery pole piece calendering device's mechanism layout.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Example 1
The utility model provides a lithium-ion battery pole piece leaves white district and rolls subassembly, as shown in fig. 1-2, mainly include two sets of the same structure's calendering gyro wheel 1 and constitute, its calendering gyro wheel mainly includes cylinder 11 and installs the teeth of a cogwheel 12 on cylinder 11. The gear teeth 12 are annular bodies formed by sequentially connecting a plurality of teeth 121 at equal intervals, the number of the teeth 121 can be 8, 10, 12, and the like, and the tooth surface of each tooth 121 is a circular arc surface. The number of the gear teeth 12 installed on the drum 11 may be 1, or 2 or more, and the specific design is mainly performed according to the model of the actual production, for example, if there are one or two, one or three, and one or four production models of the existing mainstream production, the number of the gear teeth 12 required is 1, 2, and 3 corresponding to the mainstream production model.
The assembly mode of the lithium battery pole piece calendering component is as follows: two sets of calendering gyro wheels 1 are relative and carry out the mode butt joint of interlock through two sets of teeth 121 about with, lithium-ion battery pole piece leaves white district when passing through two sets of calendering gyro wheels 1, pivoted cylinder 11 drives teeth of a cogwheel 12 and rotates, the interlock action through two sets of teeth 121 makes lithium-ion battery pole piece leave white district by the calendering extension, and then replace traditional tensile mode with the calendering mode and reduce the atress that utmost point ear left white district, make and leave white district and reach the extension effect under the less tensile condition of use, the technical problem of frequent disconnected area has been solved.
Preferably, the material of the gear teeth 12 is preferably a high-strength metal material such as alloy steel, tungsten steel, etc., and the gear teeth 12 made of the high-strength metal material can ensure the rolling effect of the blank area of the lithium battery pole piece by preventing excessive deformation when the teeth 121 are engaged with each other. Furthermore, the surface of the gear teeth 12 is provided with a wear-resistant coating to reduce wear when the teeth 121 are engaged, further, the surface of the teeth 121 is polished, and the surface roughness of the polished teeth 121 is less than or equal to ra0.02 to reduce wear of a blank area of the lithium battery pole piece.
Further, the teeth of a cogwheel 12 is fastened on the cylinder 11 with the mode of part embedding, and the tooth root 122 of the teeth of a cogwheel 12 imbeds within the barrel surface of cylinder 11 promptly for the teeth of a cogwheel 12 can keep synchronous with cylinder 11, and then makes the teeth of a cogwheel 12 and cylinder 11 do not have mutual aversion when carrying out the calendering action to the lithium-ion battery pole piece blank region through the teeth of a cogwheel 12, ensures the calendering effect to the lithium-ion battery pole piece blank region.
Example 2
as shown in fig. 1-2, the drum 11 is hollow, and the heating roller 13 is sleeved in the hollow drum 11, and the heating roller 13 is preferably an electromagnetic heating roller, so as to provide uniform heating function. Further, the material of the drum 11 is preferably a hard metal material having high thermal conductivity such as copper, a copper alloy, or an aluminum alloy. Preferably, the inner circumferential surface of the drum 11 and the outer circumferential surface of the heating roller 13 are bonded into an integral structure by coating a layer of adhesive, and particularly preferably, the drum 11 and the heating roller 13 are bonded by a high-temperature adhesive, so that not only can the tightness between the drum 11 and the heating roller 13 in the operation process be ensured, but also the disassembly and the maintenance are convenient by the characteristic of high-temperature adhesive that the high-temperature adhesive is easily soluble in water. The device is arranged in such a way that the water content in the lithium battery pole piece can be further reduced after passing through the device so as to avoid the influence of the water content in the lithium battery pole piece on the battery performance.
Example 3
The embodiment 3 is a lithium battery pole piece rolling device formed on the basis of the embodiment 1 or the embodiment 2, and adopts the lithium battery pole piece blank area rolling assembly described in the embodiment 1 or the embodiment 2, and further includes a roller mechanism 2 and a tension swing roller mechanism 3.
As shown in fig. 1-2, a lithium battery pole piece blank area calendering assembly formed by two sets of calendering rollers 1 is arranged between a roller mechanism 2 and a tension swing roller mechanism 3, and a lithium battery pole piece passes through the roller mechanism 2, the lithium battery pole piece blank area calendering assembly and the tension swing roller mechanism 3 in sequence. Because the lithium battery pole piece blank area calendering component is positioned behind the roller mechanism 2 and in front of the tension swing roller mechanism 3, the lithium battery pole piece passes through the roller mechanism 2 to roll the lithium battery pole piece in a coating area to generate extension and simultaneously block front end tension, and the glue roller 4 positioned behind the tension swing roller mechanism 3 blocks rear end tension, namely, the tension separation effect is realized through the roller mechanism and the glue roller, so that the tension is applied by the tension swing roller mechanism 3 when the pole piece blank area runs to the lithium battery pole piece blank area calendering component formed by the two groups of calendering rollers 1, and the lithium battery pole piece blank area calendering component can ensure that a better extension effect is obtained through a tooth meshing mode on the premise of balancing tension in the stage, namely, a smaller force is used for achieving the same extension effect.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing descriptions have been directed to embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the essential spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The lithium battery pole piece blank area calendering assembly is characterized by comprising two groups of calendering rollers (1) with the same structure, wherein each calendering roller (1) comprises a roller (11) and a gear tooth (12);
the gear teeth (12) are formed by sequentially connecting a plurality of same teeth (121) into an annular structure, the intervals of the teeth (121) on the gear teeth (12) are equal, the tooth surface of each tooth (121) is an arc surface, and the gear teeth (12) are sleeved on the roller (11);
the two groups of rolling rollers (1) are arranged in a manner that the teeth (121) are mutually meshed, and a lithium battery pole piece blank area passes through the two groups of gear teeth (12) and extends through the mutual meshing of the two groups of teeth (121).
2. The lithium battery pole piece blank space calendering assembly of claim 1, wherein the number of the gear teeth (12) installed on the drum (11) is 1 or more.
3. The lithium battery pole piece blank area rolling assembly according to claim 2, wherein the material of the gear teeth (12) is alloy steel or tungsten steel, and the surface of the gear teeth (12) is provided with a wear-resistant coating.
4. The lithium battery pole piece blank area calendering assembly according to claim 2, wherein the surface of the teeth (121) is polished, and the roughness of the surface of the teeth (121) is less than or equal to Ra0.02.
5. The lithium battery pole piece blank area calendering assembly of claim 2, wherein the gear teeth (12) are fixedly connected to the roller (11) in a scarf joint manner.
6. The lithium battery pole piece blank area calendering assembly of any one of the claims 1 to 5, wherein the roller (11) is a hollow cylinder, and a heating roller (13) is sleeved on a cavity of the roller (11).
7. The lithium battery pole piece blank space calendering assembly of claim 6, wherein the material of the roller (11) is copper, copper alloy or aluminum alloy.
8. The lithium battery pole piece blank space calendering assembly of claim 6, wherein the heated roller (13) is an electromagnetic heated roller.
9. The lithium battery pole piece blank area calendering assembly of claim 6, wherein the roller (11) and the heating roller (13) are connected into a whole by gluing.
10. A lithium battery pole piece calendering device, which is characterized in that the lithium battery pole piece blank area calendering component of any one of claims 1 to 9 is adopted, and the lithium battery pole piece blank area calendering device further comprises a roller mechanism (2) and a tension swing roller mechanism (3), wherein two groups of calendering rollers (1) are arranged between the roller mechanism (2) and the tension swing roller mechanism (3);
the lithium battery pole piece sequentially passes through the roller mechanism (2), the blank area calendering component of the lithium battery pole piece and the tension swing roller mechanism (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221147745.7U CN217858013U (en) | 2022-05-13 | 2022-05-13 | Lithium battery pole piece calendering device and pole piece blank area calendering assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221147745.7U CN217858013U (en) | 2022-05-13 | 2022-05-13 | Lithium battery pole piece calendering device and pole piece blank area calendering assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217858013U true CN217858013U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221147745.7U Active CN217858013U (en) | 2022-05-13 | 2022-05-13 | Lithium battery pole piece calendering device and pole piece blank area calendering assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217858013U (en) |
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2022
- 2022-05-13 CN CN202221147745.7U patent/CN217858013U/en active Active
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