Coating oven with pole piece fixing mechanism

Abstract

The utility model discloses a coating oven with a pole piece fixing mechanism, which relates to the field of lithium battery production and comprises a lower oven body, an upper oven body and an air knife, the air knife is fixedly mounted on the inner sides of the lower oven body and the upper oven body, and a stabilizing component is fixedly mounted on the inner sides of the lower oven body and the upper oven body. And heat exchange assemblies are fixedly mounted in the lower box body and the upper box body correspondingly. When the coating machine is shut down accidentally, the lower stroke air cylinder is controlled to drive the lower supporting frame to move upwards to be higher than an air knife to stably support a pole piece, and meanwhile the upper stroke air cylinder is controlled to drive the upper stabilizing frame to move downwards, so that the upper stabilizing roller installed on the upper installation lug plate at the bottom of the upper stabilizing frame moves downwards to be attached to the top of the pole piece. The upper stabilizing roller corresponds to the lower supporting roller in position, so that the pole piece is limited, the suspended pole piece is supported, the tension of the pole piece is reduced, and the hemming phenomenon caused by over-drying is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery production, concretely relates to a coating oven with pole piece fixing mechanism. BACKGROUND

[0002] Lithium ion battery can be widely applied to digital products, electric vehicles and energy storage fields due to the advantages of high energy density, large output power, long cycle life, wide working temperature range, environmental protection and the like. In the process of manufacturing the electrode of the lithium battery, negative electrode ingredients or positive electrode ingredients need to be coated, so that the material of the electrode is evenly coated on the pole piece, and then the pole piece is wound.

[0003] The existing extrusion type coating machine has rollers in the front several sections of the oven, and adopts a suspension mode in the rear several sections. The pole piece floats in the oven, and the edge of the pole piece is dried first during baking. When the solvent in the middle of the pole piece is also evaporated, the edge of the pole piece has been over-baked. However, when the coating stops, the over-baked pole piece will be rolled up due to long-time baking and the lack of roller support in the rear several sections of the oven. After the pole piece is rolled up, it is easy to be broken, which affects the production of the lithium battery pole piece and the performance of the subsequent battery cell. SUMMARY

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is as follows:

[0005] A coating oven with a pole piece fixing mechanism, comprising a lower box body, an upper box body and an air knife, the air knife is fixedly installed on the inner side of the lower box body and the upper box body, a stabilizing assembly is fixedly installed on the inner side of the lower box body and the upper box body, a heat exchange assembly is fixedly installed on the inner side of the lower box body and the upper box body respectively, the stabilizing assembly comprises a fixed sleeve fixedly installed on the front and rear sides of the lower box body and the upper box body, a lower stroke cylinder located on the outer side of the lower box body and an upper stroke cylinder located on the outer side of the upper box body are fixedly installed on the inner side of the fixed sleeve, an upper stabilizing frame is fixedly installed on the inner side of the upper stroke cylinder, a lower supporting frame is fixedly installed on the inner side of the lower stroke cylinder, an upper mounting ear plate is fixedly connected to the inner side of the upper stabilizing frame, a lower mounting ear plate is fixedly connected to the inner side of the lower supporting frame, an upper stabilizing roller is movably hinged to the inner side of the upper mounting ear plate, and a lower supporting roller is movably hinged to the inner side of the lower mounting ear plate.

[0006] The further improvement of the technical scheme of the utility model is that the heat exchange assembly comprises a spacer plate, the spacer plate is fixedly installed equidistantly in the interior of the lower box body and the upper box body, equidistantly arranged mounting seats are fixedly installed in the interior of the lower box body and the upper box body, heating pipes are fixedly installed on the inner side of the mounting seats, a controller is fixedly installed on the outer side of the lower box body and the upper box body, and wires are fixedly connected between the controller and the mounting seats.

[0007] The further improvement in the technical scheme of the utility model lies in that the upper stabilizing roller and the lower supporting roller are arranged in a staggered manner.

[0008] The further improvement in the technical scheme of the utility model lies in that the position of the upper stabilizing roller corresponds to the position of the lower supporting roller.

[0009] The further improvement in the technical scheme of the utility model lies in that the position of the heating pipe corresponds to the position of the air knife.

[0010] The further improvement in the technical scheme of the utility model lies in that a plurality of spacing plates are arranged, and the plurality of spacing plates divide the lower box body and the upper box body into a plurality of areas.

[0011] The further improvement in the technical scheme of the utility model lies in that the heating pipe is controlled by the spacing plate.

[0012] The further improvement in the technical scheme of the utility model lies in that the lower box body and the upper box body are fixedly connected with air supply pipelines which are in communication with the plurality of areas.

[0013] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0014] 1. The coating oven with the pole piece fixing mechanism is provided, when the coating machine is unexpectedly stopped, the lower supporting frame is driven to move upward by the lower stroke cylinder, the upper stabilizing frame is driven to move downward by the upper stroke cylinder, the upper stabilizing roller on the upper stabilizing frame bottom is installed on the ear plate, the upper stabilizing roller is correspondingly arranged with the lower supporting roller, the pole piece is limited, the pole piece is supported, the tension of the pole piece is reduced, and the curling phenomenon is avoided.

[0015] 2. The coating oven with the pole piece fixing mechanism is provided, the spacing plate is arranged in the lower box body and the upper box body, the air knife is arranged in the plurality of areas, the heating pipe is arranged on the mounting seat, the heating pipe is controlled by the controller, the heating temperature of the heating pipe in each area is controlled by the controller, the temperature in each area is controlled, the air frequency and the temperature are accurately adjusted, and the curling phenomenon of the pole piece is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the coating oven with the pole piece fixing mechanism.

[0017] Figure 2 It is an installation structure schematic view of the air knife.

[0018] Figure 3 It is the structure schematic view of the upstroke cylinder of the utility model;

[0019] Figure 4 It is the structure schematic view of the downstroke cylinder of the utility model;

[0020] Figure 5 It is the structure schematic view of the heat exchange assembly of the utility model.

[0021] In the drawing: 1, lower box body; 2, upper box body; 3, air knife; 4, stabilizing assembly; 41, fixed sleeve; 42, downstroke cylinder; 43, upstroke cylinder; 44, upper stabilizing frame; 45, lower supporting frame; 46, upper mounting ear plate; 47, lower mounting ear plate; 48, upper stabilizing roller; 49, lower supporting roller; 5, heat exchange assembly; 51, spacing plate; 52, mounting seat; 53, heating pipe; 54, controller; 55, wiring; 6, air supply pipeline. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail as follows:

[0023] As Figures 1 to 5 shown, the utility model provides a coating oven with pole piece fixing mechanism, including lower box body 1, upper box body 2 and air knife 3, air knife 3 is fixedly installed in the inside of lower box body 1 and upper box body 2, the inside of lower box body 1 and upper box body 2 is fixedly installed with stabilizing assembly 4, and the inside of lower box body 1 and upper box body 2 is fixedly installed with heat exchange assembly 5 respectively, stabilizing assembly 4 includes fixed sleeve 41 fixedly installed in the front and rear sides of lower box body 1 and upper box body 2, and the inside of fixed sleeve 41 is fixedly installed with downstroke cylinder 42 located at the outside of lower box body 1 and upstroke cylinder 43 located at the outside of upper box body 2 respectively, the inside of upstroke cylinder 43 is fixedly installed with upper stabilizing frame 44, the inside of downstroke cylinder 42 is fixedly installed with lower supporting frame 45, the inside of upper stabilizing frame 44 is fixedly connected with upper mounting ear plate 46, the inside of lower supporting frame 45 is fixedly connected with lower mounting ear plate 47, the inside of upper mounting ear plate 46 is swingingly hinged with upper stabilizing roller 48, and the inside of lower mounting ear plate 47 is swingingly hinged with lower supporting roller 49.

[0024] When the coating machine appears unexpected stop, by controlling downstroke cylinder 42 to drive lower supporting frame 45 to move up and be higher than air knife 3, provides stable support to pole piece, simultaneously by controlling upstroke cylinder 43 to drive upper stabilizing frame 44 to move down, makes upper stabilizing frame 44 bottom upper mounting ear plate 46 installed upper stabilizing roller 48 move down and be in place on the top of pole piece, by upper stabilizing roller 48 and lower supporting roller 49 position correspondence, thereby pole piece is positioned, provides support to the pole piece in midair, reduces the tension of pole piece itself, avoids the occurrence of curling phenomenon due to overbaking.

[0025] As Figure 5As shown, the heat exchange assembly 5 includes a partition plate 51 fixedly installed equidistantly in the interiors of the lower box body 1 and the upper box body 2, equidistantly arranged mounting seats 52 are fixedly installed in the interiors of the lower box body 1 and the upper box body 2, heating pipes 53 are fixedly installed on the inner sides of the mounting seats 52, a controller 54 is fixedly installed on the outer sides of the lower box body 1 and the upper box body 2, and wiring 55 is fixedly connected between the controller 54 and the mounting seats 52.

[0026] The partition plate 51 is divided into multiple areas in the interiors of the lower box body 1 and the upper box body 2, and the mounting seats 52 and the heating pipes 53 are correspondingly arranged in the multiple areas, the heating pipes 53 on the mounting seats 52 are controlled by the controller 54 to heat, the heating temperature of the heating pipes 53 in each area is controlled by the controller 54, the temperature in each area is correspondingly adjusted, the air frequency and the temperature are accurately adjusted, and the phenomenon of the edges of the pole piece being rolled up is improved.

[0027] As shown in Figures 2 to 4 , the upper stabilizing roller 48 and the lower supporting roller 49 are arranged in a staggered manner with the air knife 3.

[0028] The upper stabilizing roller 48 is arranged above the lower supporting roller 49.

[0029] The upper stabilizing roller 48 and the lower supporting roller 49 arranged in a staggered manner with the air knife 3 provide support for the pole piece through the lower supporting roller 49 when the machine is stopped without affecting the normal operation of the air knife 3, and the side edges of the pole piece are limited by the upper stabilizing roller 48 arranged above, thereby providing support for the pole piece in suspension and reducing the tension of the pole piece itself to avoid the edge rolling phenomenon caused by over-baking.

[0030] As shown in Figure 5 , the positions of the heating pipes 53 correspond to the positions of the air knife 3.

[0031] The positions of the heating pipes 53 correspond to the positions of the air knife 3, so that the air heated by the heating pipes 53 is blown out from the air knife 3 to dry the pole piece.

[0032] As shown in Figure 2 and Figure 5 , the partition plate 51 is provided in multiple numbers, and the multiple partition plates 51 divide the interiors of the lower box body 1 and the upper box body 2 into multiple areas.

[0033] The heating pipes 53 are controlled in areas divided by the partition plate 51.

[0034] The outer sides of the lower box body 1 and the upper box body 2 are fixedly communicated with air supply pipelines 6 respectively communicated with the multiple areas.

[0035] The air ducts in the lower housing 1 and the upper housing 2 are divided into multiple areas by the partition plate 51, and the temperature is independently controlled by the heating tubes 53 located in the multiple areas. Temperature sensors corresponding to multiple temperature areas are set in the electrode area between the lower housing 1 and the upper housing 2 to monitor the temperature, thereby improving the phenomenon of the electrode rolls curling up on both sides due to the difference in the evaporation rate of moisture at the edge and center of the electrode.

[0036] The working principle of this coating oven with an electrode fixing mechanism will be explained in detail below.

[0037] like Figures 1 to 5 As shown, the electrode sheet passes through a material passage formed between the lower housing 1 and the upper housing 2 from one side to the other. A partition plate 51 divides the lower housing 1 and upper housing 2 into multiple areas, and mounting bases 52 and heating tubes 53 are correspondingly installed with air knives 3 within these areas. Air is supplied to the lower housing 1 and upper housing 2 via an external air supply duct 6 connected to the multiple areas. The heating tubes 53 on the mounting base 52 are heated by a controller 54. The mounting base 52 is connected to the controller 54 via wiring 55. The controller 54 controls the heating temperature of the heating tubes 53 in each area, thereby regulating the temperature in each area. The hot air passes through the air knives 3. The air is blown onto the electrode sheet for drying. When the coating machine stops unexpectedly, the lower support frame 45 is moved upward by the lower stroke cylinder 42 to provide stable support for the electrode sheet above the air knife 3. At the same time, the upper stabilizer 44 is moved downward by the upper stroke cylinder 43, so that the upper stabilizing roller 48 installed on the upper ear plate 46 at the bottom of the upper stabilizer 44 moves downward and fits against the top of the electrode sheet. The upper stabilizing roller 48 and the lower support roller 49 are aligned to limit the side of the electrode sheet, provide support for the suspended electrode sheet, reduce the tension of the electrode sheet itself, and avoid the edge curling caused by over-drying. After the machine returns to normal, the lower stroke cylinder 42 and the upper stroke cylinder 43 retract to make the electrode sheet float between the air knife 3 again.

[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A coating oven with electrode tab fixing mechanism comprising a lower cabinet (1), an upper cabinet (2) and an air knife (3), characterized in that: The air knife (3) is fixedly installed on the inner side of the lower box body (1) and the upper box body (2), the inner side of the lower box body (1) and the upper box body (2) is fixedly installed with a stabilizing assembly (4), and the inner side of the lower box body (1) and the upper box body (2) is fixedly installed with a heat exchange assembly (5); The stabilizing assembly (4) comprises a fixed sleeve (41) fixedly installed on the front and rear sides of the lower box body (1) and the upper box body (2), the inner side of the fixed sleeve (41) is fixedly installed with a lower stroke air cylinder (42) located on the outer side of the lower box body (1) and an upper stroke air cylinder (43) located on the outer side of the upper box body (2), the inner side of the upper stroke air cylinder (43) is fixedly installed with an upper stabilizing frame (44), the inner side of the lower stroke air cylinder (42) is fixedly installed with a lower supporting frame (45), the inner side of the upper stabilizing frame (44) is fixedly connected with an upper mounting ear plate (46), the inner side of the lower supporting frame (45) is fixedly connected with a lower mounting ear plate (47), the inner side of the upper mounting ear plate (46) is movably hinged with an upper stabilizing roller (48), and the inner side of the lower mounting ear plate (47) is movably hinged with a lower supporting roller (49).

2. The coating oven with electrode fixing mechanism according to claim 1, characterized in that: The heat exchange assembly (5) comprises a partition plate (51), the partition plate (51) is equidistantly fixedly installed in the lower box body (1) and the upper box body (2), the inner side of the lower box body (1) and the upper box body (2) is fixedly installed with equidistantly arranged mounting seats (52), the inner side of the mounting seat (52) is fixedly installed with a heating pipe (53), the outer side of the lower box body (1) and the upper box body (2) is fixedly installed with a controller (54), and the controller (54) and the mounting seat (52) are fixedly connected with a wire (55).

3. The coating oven with electrode fixing mechanism according to claim 1, characterized in that: The upper stabilizing roller (48) and the lower supporting roller (49) are arranged in a staggered manner with the air knife (3).

4. A coating oven with electrode fixing mechanism according to claim 3, characterized in that: The position of the upper stabilizing roller (48) corresponds to the position of the lower supporting roller (49) directly above.

5. The coating oven with electrode fixing mechanism according to claim 2, characterized in that: The position of the heating pipe (53) corresponds to the position of the air knife (3).

6. A coating oven with electrode fixing mechanism according to claim 2, characterized in that: The partition plate (51) is provided with a plurality of partition plates (51), and the plurality of partition plates (51) separate the lower box body (1) and the upper box body (2) into a plurality of areas.

7. A coating oven with electrode fixing mechanism according to claim 6, characterized in that: The heating pipe (53) is divided into areas by the partition plate (51).

8. A coating oven with electrode fixing mechanism according to claim 6, characterized in that: The outer side of the lower box body (1) and the upper box body (2) is fixedly communicated with a supply air pipeline (6) respectively communicated with a plurality of areas.

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