Drying device and coating equipment

Abstract

The utility model discloses a drying device and coating equipment, the drying device comprises a light source assembly and a shading assembly, the light source assembly is used for emitting light beams, and the light beams are used for irradiating a material belt to dry the material belt; the shading assembly comprises a shading piece and a driving unit, and the shading piece is used for shading a part of light beams; the driving unit is used for driving the shading piece to move so as to adjust the irradiation range of the light beam on the material belt. The drying device can dry the pole pieces with different widths, and is higher in compatibility.

Description

TECHNICAL FIELD

[0001] The present application relates to the coating technical field, and in particular to a drying device and a coating equipment. BACKGROUND

[0002] In the production process of the lithium battery pole piece, the pole piece needs to be coated first, and then dried in an oven. In the drying process, if the pole piece is not effectively dried, part of the water and solvent will remain on the pole piece, and the material coated on the pole piece has the risk of cracking and falling off, and the lithium battery made of such pole piece is prone to failure.

[0003] At present, laser baking pole piece is gradually emerging, and laser baking has the characteristics of fast baking speed, stable baking quality and uniform heating. In the related technology, the coating area of the pole piece is baked by laser. However, the existing drying device cannot complete the drying task of pole pieces with different widths due to unreasonable structure design. CONTENT OF THE INVENTION

[0004] Therefore, the present application provides a drying device which can dry pole pieces with different widths and has stronger compatibility.

[0005] The present application also provides a coating equipment with the above drying device.

[0006] The drying device according to the first aspect of the present application comprises:

[0007] A light source assembly is configured to emit a light beam, and the light beam is configured to irradiate a material belt to dry the material belt.

[0008] A light shielding assembly comprises a light shielding member and a driving unit, wherein the light shielding member is configured to shield a part of the light beam, and the driving unit is configured to drive the light shielding member to move to adjust an irradiation range of the light beam on the material belt.

[0009] The drying device according to the present application has at least the following beneficial effects: when the drying device needs to dry pole pieces (one kind of material belt) with different widths, the driving unit drives the light shielding member to move to adjust the irradiation range of the light beam on the pole piece, that is, the light beam can be adjusted to the coating area of the new pole piece, the light beam can heat and dry the coating area of the new pole piece, and the drying device can dry pole pieces with different widths, and has stronger compatibility.

[0010] According to some embodiments of the present application, the light shielding member is provided with two light shielding members, the driving unit is configured to drive the two light shielding members to move towards each other to reduce the irradiation range, and the driving unit is also configured to drive the two light shielding members to move away from each other to expand the irradiation range.

[0011] According to some embodiments of the present application, the conveying direction of the material tape is the first direction, one light source assembly and one light shielding assembly form a working group, and two or more working groups are provided, and the two or more working groups are arranged at intervals along the first direction.

[0012] According to some embodiments of the present application, the surface of the light shielding member includes two or more reflection surfaces for reflecting the light beams, and the included angle between at least two reflection surfaces is greater than zero.

[0013] According to some embodiments of the present application, the light shielding assembly further includes:

[0014] a first cooling assembly for cooling the light shielding member.

[0015] According to some embodiments of the present application, further including:

[0016] a second cooling assembly for cooling the material tape after being dried by the light source assembly.

[0017] According to some embodiments of the present application, the second cooling assembly includes:

[0018] a wind knife for blowing cooling gas towards the material tape, the temperature of the cooling gas being lower than the temperature of the material tape after being dried by the light source assembly.

[0019] According to some embodiments of the present application, the light source assembly includes at least one of a light emitting diode, an infrared lamp tube, a microwave generator, and a laser.

[0020] According to some embodiments of the present application, further including:

[0021] a winding-off assembly for winding off the material tape.

[0022] According to the second aspect of the embodiments of the present application, the coating device includes:

[0023] the drying device described above;

[0024] a coating device for producing the material tape.

[0025] According to the coating device of the embodiments of the present application, at least the following beneficial effects are achieved: by using the drying device described above, the compatibility of the coating device for different widths of the pole piece is improved.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0028] Figure 1 This is a perspective view of the drying apparatus according to the first embodiment of this application;

[0029] Figure 2 for Figure 1 Right view of the drying unit;

[0030] Figure 3 for Figure 1 Front view of the drying unit;

[0031] Figure 4 for Figure 1 A perspective view of the shielding components of the drying unit;

[0032] Figure 5 for Figure 4 A magnified view of a portion of region I;

[0033] Figure 6 This is a cross-sectional view of the shielding member of the drying apparatus according to the second embodiment of this application;

[0034] Figure 7 for Figure 1 A three-dimensional view of the light source assembly of the drying device;

[0035] Figure 8 This is a schematic diagram of a drying apparatus according to a third embodiment of this application;

[0036] Figure 9 This is a schematic diagram of a coating apparatus according to an embodiment of this application.

[0037] Reference numerals: light source assembly 100, beam 110, laser head 120, shaping assembly 130, focusing assembly 140;

[0038] Material strip 200, electrode sheet 210;

[0039] The light-shielding assembly 300, the driving unit 310, the reflective surface 311, the cooling channel 312, the light-shielding component 320, and the first cooling assembly 330 are included.

[0040] Temperature sensor 400;

[0041] Frame 510, second cooling assembly 520, air knife 521;

[0042] Unwinding assembly 610, coating device 620. Detailed Implementation

[0043] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below are exemplary and are for the purpose of explaining the present application only, and should not be understood as limiting the present application.

[0044] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number itself, above, below, etc. are understood as not including the number itself. If it is described as first, second, etc. is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0046] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0047] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] It should be noted that the drying device of the following embodiments of the present application is taken as the pole piece 210 as the drying object. However, the drying device of the embodiments of the present application can dry the material belt 200, which is not limited to the pole piece 210, but also can be an optical film, a thin film solar cell or an ink belt, etc.

[0049] Referring to Figure 1 and Figure 2 It should be noted that Figure 1 and Figure 2The double-dot-dashed line in the figure indicates the boundary of the light beam 110, i.e. the irradiation area of the light beam 110 when not blocked. The drying device according to the first aspect of the present application comprises a light source assembly 100 and a light blocking assembly 300. The light source assembly 100 is configured to emit a light beam 110, and the light beam 110 is configured to irradiate the pole piece 210 to dry the pole piece 210. The light blocking assembly 300 comprises a light blocking member 320 and a driving unit 310, and the light blocking member 320 is configured to block a part of the light beam 110. The driving unit 310 is configured to drive the light blocking member 320 to move, so as to adjust the irradiation range of the light beam 110 on the pole piece 210.

[0050] The drying device according to the present application has at least the following beneficial effects: when the drying device needs to dry pole pieces 210 of different widths, the driving unit 310 drives the light blocking member 320 to move, so as to adjust the irradiation range of the light beam 110 on the pole piece 210, i.e. the light beam 110 can be readjusted to the coating area of a new pole piece 210, the light beam 110 can heat and dry the coating area of the new pole piece 210 in a targeted manner, and the drying device can dry pole pieces 210 of different widths, so the compatibility of the drying device is stronger.

[0051] It should be noted that the light spot formed by the light beam 110 is usually rectangular.

[0052] Specifically, the driving unit 310 can comprise one of a linear motor, an air cylinder, an oil cylinder, a motor-driven screw nut mechanism, a motor-driven gear rack mechanism, a motor-driven crank slider mechanism, a motor-driven synchronous pulley synchronous belt mechanism, and a motor-driven sprocket chain mechanism.

[0053] Specifically, to install the light source assembly 100 and the light blocking assembly 300, the drying device further comprises a rack 510, and the light source assembly 100 and the light blocking assembly 300 are both installed on the rack 510.

[0054] Referring to Figure 1 and Figure 3 In some embodiments of the present application, the light blocking member 320 is provided in two, and the driving unit 310 is configured to drive the two light blocking members 320 to move towards each other to reduce the irradiation range. The driving unit 310 is further configured to drive the two light blocking members 320 to move away from each other to expand the irradiation range.

[0055] By providing two light blocking members 320, the light on the opposite sides of the light beam 110 can be blocked, so that when drying pole pieces 210 of different widths, the light beam 110 can irradiate the coating area of a new pole piece 210, but not the tab area of the pole piece 210.

[0056] It should be noted that when the light shielding piece 320 is provided with two, the driving unit 310 can be correspondingly provided with two, and the two driving units 310 respectively drive the two light shielding pieces 320, so that the position adjustment of the light shielding piece 320 is more flexible, and the driving unit 310 is not easy to block the light beam 110.

[0057] In addition, when the light shielding piece 320 is provided with two, the driving unit 310 can also be provided with one, for example, two nut seats threadedly matched with the same lead screw are used to respectively drive the two light shielding pieces 320.

[0058] Referring to Figure 2 In some embodiments of the present application, the conveying direction of the pole piece 210 is the first direction (refer to Figure 2 , for example, the first direction is the backward direction), one light source assembly 100 and one light shielding assembly 300 form a working group, the working group is provided with two or more, and the two or more working groups are arranged at intervals along the first direction.

[0059] By arranging two or more working groups, the pole piece 210 can be sequentially heated (for example, preheated first and then heated to the target temperature), and the drying effect of the pole piece 210 is better. In addition, when the pole piece 210 is conveyed at a high speed, the drying device can heat the pole piece 210 multiple times, the drying effect of the pole piece 210 is guaranteed, and the production efficiency of the pole piece 210 is also higher.

[0060] It should be noted that in order to improve the drying effect, the two surfaces of the pole piece 210 can be respectively provided with working groups, so that the two surfaces of the pole piece 210 are uniformly heated, and the drying effect is better.

[0061] Referring to Figure 3 In some embodiments of the present application, the drying device further comprises a temperature sensor 400, and the temperature sensor 400 is used to detect the temperature of the pole piece 210 during heating and after heating by the light source assembly 100, so that the power of the light source assembly 100 can be adjusted in real time, and the drying temperature of the pole piece 210 is more controllable. Specifically, the temperature sensor 400 can be one of an infrared camera, an infrared thermal imager and a thermocouple.

[0062] When the two surfaces of the pole piece 210 can be respectively provided with working groups, the temperature sensor 400 can be provided with multiple, so as to respectively detect the temperature of the two sides of the pole piece 210.

[0063] Referring to Figures 4 to 6 In some embodiments of the present application, the surface of the light shielding piece 320 comprises two or more reflecting surfaces 311, the reflecting surface 311 is used to reflect the light beam 110, and the included angle between at least two reflecting surfaces 311 is greater than zero.

[0064] By setting two or more reflecting surfaces 311, the included angle between at least two reflecting surfaces 311 is greater than zero, the light beam 110 can be reflected to different directions, thereby reducing the probability that the light beam 110 reflected by the light shielding piece 320 is concentrated on a certain position to heat, and the safety of the drying device is higher.

[0065] Specifically, referring to Figure 5 , the reflecting surface 311 is an inclined surface with an acute angle with the horizontal plane, the included angle between adjacent two inclined surfaces is an acute angle, the length direction of the inclined surface is arranged along the left-right direction, and a plurality of inclined surfaces are arranged in the front-rear direction, thereby forming the upper surface of the light shielding piece 320. Referring to Figure 6 , the reflecting surface 311 is an arc-shaped convex surface, the convex surface extends along the left-right direction, and a plurality of convex surfaces are arranged in the front-rear direction, thereby forming the upper surface of the light shielding piece 320.

[0066] Referring to Figure 6 , in some embodiments of the present application, the light shielding assembly 300 further comprises a first cooling assembly 330, and the first cooling assembly 330 is used to cool the light shielding piece 320.

[0067] By cooling the light shielding piece 320 through the first cooling assembly 330, the probability of overheating of the light shielding piece 320 can be reduced, and the service life of the light shielding piece 320 is longer.

[0068] Specifically, the first cooling assembly 330 can be one of a liquid cooling system, a semiconductor cooler and an air cooler. When the first cooling assembly 330 uses a liquid cooling system, a cooling channel 312 can be formed in the light shielding piece 320, the liquid cooling system guides the cooling medium into the cooling channel 312, and the cooling medium absorbs the heat of the light shielding piece 320 and then flows out of the cooling channel 312. The cooling medium that has absorbed the heat of the light shielding piece 320 is cooled again and then enters the cooling channel 312 again, thereby performing cyclic cooling on the light shielding piece 320.

[0069] Referring to Figure 2 , in some embodiments of the present application, the drying device further comprises a second cooling assembly 520, and the second cooling assembly 520 is used to cool the pole piece 210 after being dried by the light source assembly 100.

[0070] By increasing the second cooling assembly 520, the dried pole piece 210 can be quickly cooled, and the probability of material performance degradation of the pole piece 210 due to high temperature is lower.

[0071] Referring to Figure 2 , in the improvement scheme of the above-mentioned embodiments, the second cooling assembly 520 comprises an air knife 521, and the air knife 521 is used to blow cooling gas towards the pole piece 210, and the temperature of the cooling gas is lower than the temperature of the pole piece 210 after being dried by the light source assembly 100.

[0072] By cooling the pole piece 210 with the cooling gas, the cooling gas can be in full contact with the pole piece 210, and the cooling effect is good. In addition, the cooling gas is in soft contact with the pole piece 210, and is not easy to cause damage to the pole piece 210, which is conducive to protecting the pole piece 210

[0073] In another embodiment, the second cooling assembly 520 can also include a water cooling assembly or a roller pressing cooling assembly.

[0074] In some embodiments of the present application, the light source assembly 100 includes at least one of a light-emitting diode, an infrared lamp tube, a microwave generator, and a laser.

[0075] The light-emitting diode, the infrared lamp tube, the microwave generator, and the laser can all heat the pole piece 210, and are easy to obtain and have low equipment cost. Among them, the laser is a more preferred embodiment, and the laser can quickly and accurately heat the pole piece 210.

[0076] Referring to Figure 7 , some embodiments of the present application, the light source assembly 100 includes a laser, and the laser includes a laser head 120, a shaping assembly 130, and a focusing assembly 140. The shaping assembly 130 usually includes a double convex lens and a double concave lens, and the focusing assembly 140 usually includes a focusing mirror.

[0077] Referring to Figure 8 , according to some embodiments of the present application, the drying device further includes an unwinding assembly 610, and the unwinding assembly 610 is used to unwind the pole piece 210.

[0078] By adding the unwinding assembly 610, the drying device can unwind and bake the pole piece 210 wound into a roll, the function of the drying device is more abundant, and the application range of the drying device is wider.

[0079] Specifically, the unwinding assembly 610 includes an unwinding wheel and a motor, and the motor drives the unwinding wheel to rotate, so as to release the pole piece 210 wound on the unwinding wheel.

[0080] According to the coating device of the second aspect of the present application, the coating device includes a drying device and a coating device 620, and the coating device 620 is used to produce the pole piece 210.

[0081] According to the coating device of the present application, at least the following beneficial effects are obtained: by using the above-mentioned drying device, it is conducive to improving the compatibility of the coating device for pole pieces 210 of different widths.

[0082] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Drying apparatus, characterized in that Comprising: a light source assembly for emitting a light beam, the light beam for irradiating a material tape to dry the material tape; a light shielding assembly including a light shielding member and a driving unit, the light shielding member for shielding a part of the light beam; the driving unit for driving the light shielding member to move to adjust an irradiation range of the light beam on the material tape.

2. The drying apparatus according to claim 1, wherein The light shielding member is provided with two, the driving unit for driving the two light shielding members to approach each other to reduce the irradiation range; the driving unit is also used for driving the two light shielding members to move away from each other to expand the irradiation range.

3. The drying apparatus according to claim 1, wherein The conveying direction of the material tape is the first direction, one light source assembly and one light shielding assembly are an operating group, the operating group is provided with two or more, two or more operating groups are arranged along the first direction.

4. The drying apparatus according to claim 1, wherein The surface of the light shielding member includes two or more reflecting surfaces, the reflecting surfaces are used for reflecting the light beam, and the included angle between at least two reflecting surfaces is greater than zero.

5. The drying apparatus according to claim 1, wherein The light shielding assembly further comprises: a first cooling assembly for cooling the light shielding member.

6. The drying apparatus of claim 1, wherein Further comprising: a second cooling assembly for cooling the material tape dried by the light source assembly.

7. The drying apparatus according to claim 6, wherein The second cooling assembly comprises: an air knife for blowing cooling gas towards the material tape, the temperature of the cooling gas is less than the temperature of the material tape dried by the light source assembly.

8. The drying apparatus of claim 1, wherein, The light source assembly includes at least one of a light emitting diode, an infrared lamp tube, a microwave generator and a laser.

9. The drying apparatus according to any one of claims 1 to 8, characterized in that, Further comprising: a unwinding assembly for unwinding the material tape.

10. Coating apparatus, characterized in that Comprising: the drying device of any one of claims 1 to 8; a coating device for producing the material tape.

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