CN219356801U - Pole piece drying equipment - Google Patents

Abstract

The application provides a pole piece drying equipment, pole piece drying equipment include microwave output device and microwave dehydrating unit, and microwave dehydrating unit includes the exhaust tube, and the exhaust tube includes air inlet and fender flow board, and the air inlet is located the circumference lateral wall of exhaust tube, and the fender flow board distributes in the below of air inlet to accept the inside condensation drip of exhaust tube. The exhaust tube is through the vapor that the air inlet extraction stoving in-process produced, and the fender flow board can block the water droplet that condenses and drip under the action of gravity to avoid the water droplet to fall back to external environment from the air inlet, pole piece drying equipment can avoid the water droplet whereabouts of condensation, thereby improves the quality that the pole piece was dried.

Description

Pole piece drying equipment

Technical Field

The application relates to the field of microwave drying, in particular to pole piece drying equipment.

Background

In the manufacturing process of the lithium battery, the surface of the pole piece is required to be coated with slurry, and then the pole piece is dried to form a coating layer. In order to improve drying efficiency, the prior pole piece drying equipment generally dries the pole piece in a hot air drying mode, and in some existing schemes, a microwave output device is integrated in the pole piece drying equipment, and drying of the pole piece is quickened through microwave heating.

After the microwave heating is added, a large amount of water vapor can be generated in the microwave environment in the drying process, in order to improve the discharging effect of the water vapor, the water vapor can be extracted by arranging a dehumidifying device on the pole piece path, but partial water vapor is likely to condense in the dehumidifying device, and liquid drops formed by the water vapor are likely to fall back on the pole piece from the air inlet, so that the pole piece is possibly damaged.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides pole piece drying equipment, and pole piece drying equipment can improve the quality of pole piece stoving.

According to the pole piece drying equipment provided by the application, the device comprises a microwave output device and a microwave dehumidification device, the microwave dehumidification device comprises an exhaust pipe, the exhaust pipe comprises an air inlet and a flow baffle, the air inlet is positioned on the circumferential side wall of the exhaust pipe, and the flow baffle is distributed below the air inlet so as to receive liquid drops of condensation drops in the exhaust pipe.

According to the pole piece drying equipment provided by the application, the pole piece drying equipment has at least the following technical effects: the pole piece drying equipment is used for drying the pole piece, firstly, the microwave output device can generate microwaves, thereby heating the moisture in the pole piece, promoting the evaporation of the moisture, the exhaust tube can block the water drops which are condensed and drop down under the action of gravity through the water vapor generated in the air inlet extraction drying process, thereby avoiding the water drops from the air inlet to drop back to the external environment, and the pole piece drying equipment can avoid the condensed water drops to drop back, thereby improving the quality of pole piece drying.

According to some embodiments of the application, the baffle extends from the edge of the air inlet to the interior of the extraction duct.

According to some embodiments of the present application, the circumferential side wall of the exhaust tube includes a first arc section and a second arc section, the diameter of the first arc section is smaller than that of the second arc section, a first end of the first arc section is connected with a first end of the second arc section, a second end of the first arc section extends into a concave position of the second arc section and forms the air inlet with a second end of the second arc section, and a second end of the second arc section forms the baffle.

According to some embodiments of the application, the microwave dehumidifying device comprises an exhaust fan, the exhaust pipe comprises an air outlet, the air outlet is located at one end of the exhaust pipe along the axial direction, and the air outlet is connected with the exhaust fan.

According to some embodiments of the application, the microwave output device comprises a waveguide assembly, the exhaust tube is located at one side of the waveguide assembly, and the air inlet is oriented towards the waveguide assembly.

According to some embodiments of the present application, the pole piece drying device includes a pole piece fixture, the pole piece fixture and the waveguide assembly are oppositely disposed in a first direction, the waveguide assembly being movable in the first direction to be closer to or farther from the pole piece fixture.

According to some embodiments of the present application, the pole piece fixing device comprises a bearing assembly, the bearing assembly comprises a fixing table and a clamping plate, the fixing table is used for bearing the pole piece, and the clamping plate is used for pressing the edge of the pole piece.

According to some embodiments of the application, the pole piece fixing device comprises a second driving assembly, the bearing assembly is mounted on the second driving assembly, and the second driving assembly is used for driving the bearing assembly to move along a second direction.

According to some embodiments of the present application, the pole piece drying device comprises a drying oven, the drying oven forms a drying chamber, the pole piece fixing device, the microwave output device and the exhaust tube are located in the drying chamber, the drying oven comprises a door, and the door is used for closing or opening the drying chamber.

According to some embodiments of the application, the waveguide assembly includes waveguide slits spaced apart along a third direction along which the axis of the extraction tube extends and the air inlet extends.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

fig. 1 is a schematic view of a partial structure of a pole piece drying apparatus according to an embodiment of the present application;

FIG. 2 is a schematic view of a microwave dehumidifying apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view of the structure of an exhaust tube according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a pole piece drying device according to an embodiment of the present application.

Reference numerals:

exhaust tube 110, air inlet 111, first arc segment 112, second arc segment 113, exhaust fan 120,

A waveguide assembly 210, a first drive assembly 220, a mounting bracket 230,

A bearing assembly 310, a fixing table 311, a clamping plate 312, a second driving assembly 320,

And an oven 400.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring 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 should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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 explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.

According to the microwave dehumidification device provided by the application, the microwave dehumidification device comprises the exhaust pipe 110, the exhaust pipe 110 comprises the air inlet 111 and the flow baffle, the air inlet 111 is positioned on the circumferential side wall of the exhaust pipe 110, and the flow baffle is distributed below the air inlet 111 so as to receive liquid drops condensed and dropped in the exhaust pipe.

The microwave dehumidification device is used for sucking water vapor, for example, the microwave dehumidification device can be used for pole piece drying equipment, and the water vapor evaporated during pole piece drying is sucked. Generally, the water vapor entering the exhaust pipe 110 is discharged out of the exhaust pipe 110 along with the air flow, but is influenced by factors such as excessive water content of the air, excessive temperature difference between the pipe wall of the exhaust pipe 110 and the water vapor, etc., the water vapor in the exhaust pipe 110 may condense on the pipe wall to form a water film, if the condensation speed is too high, water droplets may be collected and drop from the pipe wall, and the water droplets may fall back on the surface of the articles to be dried from the air inlet, so that the drying quality is affected.

According to the microwave dehumidification device that this application provided, through setting up the fender flow board, the fender flow board can block the water droplet that condenses and drip under the action of gravity to avoid the water droplet to fall back to external environment from the air inlet, microwave dehumidification device can avoid the water droplet whereabouts of condensation.

The application provides a pole piece drying equipment uses the microwave dehydrating unit that this application provided to avoid the water droplet in the pole piece stoving process to fall back, avoid because the water droplet leads to the pole piece quality impaired on the pole piece, improve the pole piece yield of stoving process. The pole piece drying equipment further comprises a microwave output device for generating microwaves.

Referring to the embodiment of fig. 1, the microwave output device includes a waveguide assembly 210, and the exhaust pipe 110 is located at one side of the waveguide assembly 210, and the air inlet is directed toward the waveguide assembly 210. In fig. 1, the waveguide tube assembly 210 faces the pole piece located below, microwaves emitted by the waveguide tube 210 are absorbed by water in the pole piece, the energy of the microwaves is converted into heat energy by vibration friction of water molecules, so that the temperature is quickly raised and evaporated, the microwaves can penetrate through the pole piece, meanwhile, the surface and the water in the pole piece are heated, the pole piece is uniformly heated, and vapor evaporated and raised on the pole piece can be efficiently absorbed by the exhaust tube 110 located at the side, so that drying of the pole piece is accelerated.

It will be appreciated that the baffle may be designed in a variety of ways, and in some embodiments, the baffle extends from the edge of the intake port 111 toward the interior of the extraction tube 110. For example, referring to the embodiment of fig. 2, the circumferential sidewall of the exhaust tube 110 includes a first arc segment 112 and a second arc segment 113, the first arc segment 112 having a smaller diameter than the second arc segment 113, a first end of the first arc segment being connected to a first end of the second arc segment, a second end of the first arc segment extending into the recess of the second arc segment and forming the air inlet with the second end of the second arc segment, the second end of the second arc segment forming the baffle. Specifically, referring to fig. 3, the axis of the air suction pipe 110 is along the horizontal direction, when the water drops at the air inlet fall under the action of gravity, the water drops fall on the baffle plate first, and then are discharged through the suction action of the air suction pipe 110, and the second end of the first circular arc section 112 extends towards the direction of the second circular arc section 113, and because the diameters of the first circular arc section 112 and the second circular arc section 113 are different, the second end of the first circular arc section 112 can be blocked above the air inlet 111 and the baffle plate, and the concave surface of the first circular arc section 112 or the water drops above the first circular arc section 112 can fall in the upper surface of the first circular arc section 112 under the action of gravity, but do not directly enter the air inlet 111, i.e. the second end of the first circular arc section 112 can also form another baffle plate positioned on the water drop baffle plate, so as to further improve the anti-dripping effect. In addition, the first arc section 112 and the second arc section 113 form the exhaust pipe 110 into a volute-shaped air passage, which is helpful for sucking water films and water drops on the inner wall of the exhaust pipe 110.

Returning to fig. 2, in some embodiments, the microwave dehumidification device includes an exhaust fan 120, and the exhaust tube 110 includes an air outlet at one axial end of the exhaust tube 110, where the air outlet is connected to the exhaust fan 120. The exhaust fan 120 generates an air flow along the axial direction of the exhaust pipe 110, and simultaneously extracts water vapor, a water film on the inner wall of the exhaust pipe 110 and water drops.

In some embodiments, the pole piece drying device includes a pole piece fixture, the pole piece fixture and the waveguide assembly 210 being oppositely disposed in a first direction. In fig. 1, the first direction is the up-down direction, the pole piece fixing device is located below the waveguide tube assembly 210, and the pole piece is horizontally placed on the pole piece fixing device, so that uniform drying of each area of the pole piece is facilitated. In some embodiments, the waveguide assembly 210 is movable in a first direction toward and away from the pole piece fixture to adjust the intensity of the microwaves to adaptively control the drying rate of the pole piece. Referring to fig. 1, the microwave output device further includes a first driving assembly 220 and a mounting frame 230, the first driving assembly 220 is mounted on the mounting frame 230, the waveguide assembly 210 is mounted on the first driving assembly 220, and the first driving assembly 220 drives the waveguide assembly 210 to move.

In some embodiments, the pole piece drying apparatus is used in a lamination process, the pole piece to be dried is provided in sheet form, and thus the pole piece fixing device comprises a carrier assembly 310, the carrier assembly 310 comprising a fixing table 311 and a clamping plate 312, the fixing table 311 being used to carry the pole piece, the clamping plate 312 being used to press against an edge of the pole piece, the carrier assembly 310 being further movable in some embodiments in a second direction. In fig. 1, the second direction refers to the left-right direction, on one hand, the bearing assembly 310 can move to avoid the waveguide tube 210 assembly, so as to facilitate loading and unloading of the pole piece, and on the other hand, each part of the pole piece is dried sequentially under the waveguide tube assembly 210, so that the size of the pole piece which can be dried by the pole piece drying device is increased on the premise that no more waveguide tube assemblies 210 are added. Referring to fig. 1, the pole piece fixing device further includes a second driving assembly 320, the bearing assembly 310 is mounted on the second driving assembly 320, and the second driving assembly 320 drives the bearing assembly 310 to move.

The first and second driving units 220 and 320 may use a single axis robot, a screw slider mechanism, a linear motor, etc., which are commonly used in the art.

In some embodiments, pole piece drying apparatus includes an oven 400, the oven 400 forming a drying chamber, pole piece fixtures, microwave output devices, and an exhaust tube 110 being located within the drying chamber, the oven 400 including a door for closing or opening the drying chamber. The pole piece drying equipment with the openable and closable box door is suitable for the battery core manufactured by a lamination process, in the lamination process, a material belt is cut into single pole pieces, then the pole pieces and the diaphragms are stacked together to form the battery core, the single pole pieces can be put into the oven 400 for drying after being coated, and the box door is closed during drying, so that heat loss is reduced on one hand, and microwave leakage is avoided on the other hand, and the human health is influenced. Referring to the embodiment of fig. 4, the box door is located on the movement path of the bearing assembly, and the size of the box door corresponds to that of the bearing assembly, and when loading and unloading, the bearing assembly can extend out of the drying chamber from the box door, so that an operator can conveniently perform loading and unloading operations.

It will be appreciated that the oven door of oven 400 is hidden from view in the embodiment of fig. 4 in order to facilitate the internal state of oven 400.

In some embodiments, waveguide assembly 210 includes waveguide slots spaced apart along a third direction, with the axis of extraction tube 110 along the third direction and air inlet 111 extending along the third direction.

The pole piece drying device provided according to the present application will be described in detail with reference to fig. 1 to 4 in a specific embodiment. It is to be understood that the following description is exemplary only and is not intended to limit the application to the details of the present application. The present embodiment may also be replaced by or combined with the above-described corresponding technical features.

The pole piece drying equipment comprises an oven 400, a microwave dehumidification device, a microwave output device and a pole piece fixing device.

Referring to fig. 4, the oven 400 forms a drying chamber, and the oven 400 includes a door capable of closing or opening the drying chamber 400.

Referring to fig. 1 and 4, the pole piece fixing device is located at the bottom of the drying chamber, and the pole piece fixing device includes a second driving member 320 and a bearing assembly 310, the mounting height of the bearing assembly 310 corresponds to the door, the width of the door in the left-right direction is greater than that of the bearing assembly in the left-right direction, and the second driving member 320 can drive the bearing assembly 310 to move in the front-rear direction and can drive the bearing assembly 310 to move in and out from the door. The bearing assembly 310 comprises a fixing table 311, the pole piece is placed on the fixing table 311, the bearing assembly 310 further comprises a clamping plate 312, and the clamping plate 312 is matched with the fixing table 311 to press and fix the pole piece.

Referring to fig. 1, the microwave output device includes a waveguide assembly 210, the waveguide assembly 210 has waveguide slits spaced apart in a left-right direction, the waveguide slits extend in the left-right direction, the waveguide slits are disposed opposite to a pole piece fixing device in an up-down direction, the microwave output device further includes a mounting frame 230 and a first driving assembly 220, the mounting frame 230 is designed in a gantry type, the first driving assembly 220 is mounted on the mounting frame 230, the waveguide assembly 210 is mounted on the first driving assembly 230, and the first driving assembly 230 can drive the waveguide assembly 210 to approach or depart from the pole piece fixing device in the up-down direction.

Referring to fig. 1 and 2, the microwave dehumidifying apparatus includes an exhaust fan 120 and an exhaust pipe 110, the exhaust fan 120 is located outside the oven 400, one end of the exhaust pipe 110 is installed on the exhaust fan 120, the other end of the exhaust pipe 110 is inserted into the drying chamber 400, the axis of the exhaust pipe 110 is along the left and right direction, and the exhaust pipe 110 is located at one side of the microwave output apparatus. The circumferential side wall of the exhaust tube 110 comprises a first arc section 112 and a second arc section 113, the diameter of the first arc section 112 is smaller than that of the second arc section 113, an air inlet 111 is formed between the first arc section 112 and the second arc section 113, the air inlet 111 extends along the left-right direction, the air inlet 111 faces the waveguide tube assembly 210, the end part of the first arc section 112 extends towards the direction of the second arc section 113, and the first arc section 112 and the second arc section 113 respectively form a flow blocking plate above and below the air inlet 111.

According to the pole piece drying equipment disclosed by the embodiment of the application, by adopting the above design, at least some functions can be realized: through setting up the fender flow board, the fender flow board can block the water droplet that condenses and drip under the action of gravity to avoid the water droplet to fall back to external environment from the air inlet, pole piece drying equipment can avoid the water droplet fall back of pole piece stoving in-process, avoids because the water droplet to drop and lead to the pole piece quality impaired on the pole piece, improves the pole piece yield of stoving process.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A pole piece drying apparatus, comprising:

a microwave output device;

the microwave dehumidification device comprises an exhaust pipe, wherein the exhaust pipe comprises an air inlet and a flow baffle, the air inlet is positioned on the circumferential side wall of the exhaust pipe, and the flow baffle is distributed below the air inlet so as to receive liquid drops condensed and dropped in the exhaust pipe.

2. The pole piece drying apparatus of claim 1, wherein: the baffle plate extends from the edge of the air inlet to the interior of the exhaust pipe.

3. The pole piece drying apparatus of claim 2, wherein: the circumferential side wall of the exhaust tube comprises a first circular arc section and a second circular arc section, the diameter of the first circular arc section is smaller than that of the second circular arc section, the first end part of the first circular arc section is connected with the first end part of the second circular arc section, the second end part of the first circular arc section extends into the concave position of the second circular arc section and forms the air inlet with the second end part of the second circular arc section, and the second end part of the second circular arc section forms the flow baffle.

4. The pole piece drying apparatus of claim 1, wherein: the microwave dehumidifying device comprises an exhaust fan, the exhaust pipe comprises an air outlet, the air outlet is positioned at one end of the exhaust pipe along the axial direction, and the air outlet is connected with the exhaust fan.

5. The pole piece drying apparatus according to any one of claims 1 to 4, wherein: the microwave output device comprises a waveguide tube assembly, the exhaust tube is positioned on one side of the waveguide tube assembly, and the air inlet faces the waveguide tube assembly.

6. The pole piece drying apparatus of claim 5, wherein: the pole piece drying equipment comprises a pole piece fixing device, the pole piece fixing device and the waveguide tube assembly are oppositely arranged in a first direction, and the waveguide tube assembly can move along the first direction to be close to or far away from the pole piece fixing device.

7. The pole piece drying apparatus of claim 6, wherein: the pole piece fixing device comprises a bearing assembly, the bearing assembly comprises a fixing table and a clamping plate, the fixing table is used for bearing the pole piece, and the clamping plate is used for pressing the edge of the pole piece.

8. The pole piece drying apparatus of claim 7, wherein: the pole piece fixing device comprises a second driving assembly, the bearing assembly is installed on the second driving assembly, and the second driving assembly is used for driving the bearing assembly to move along a second direction.

9. The pole piece drying apparatus of claim 7, wherein: the pole piece drying equipment comprises a drying oven, the drying oven forms a drying chamber, the pole piece fixing device, the microwave output device and the exhaust tube are positioned in the drying chamber, the drying oven comprises a box door, and the box door is used for closing or opening the drying chamber.

10. The pole piece drying apparatus of claim 6, wherein: the waveguide assembly comprises waveguide slits which are arranged at intervals along a third direction, the axis of the exhaust pipe is along the third direction, and the air inlet extends along the third direction.