Hot air drying system for new energy lithium battery

Abstract

The hot air drying system for the new energy lithium battery comprises a hot air drying box body, exhaust holes are formed in the bottom of the hot air drying box body, a transverse air injection pipeline is arranged at the top of an inner cavity of the hot air drying box body, and air nozzles are evenly installed at the bottom of the air injection pipeline. An air inlet of the air spraying pipeline is connected with an air supply unit through a guide pipe, and the air supply unit is connected with an air heating unit through a guide pipe. Therefore, the hot drying air is used for hot drying of the lithium battery, the hot drying efficiency of the lithium battery is greatly improved, the drying period can be shortened, and then the drying energy consumption is reduced. And hot air sprayed to the lithium battery is recovered, so that heat is recovered and reused, and the energy consumption is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery drying, in particular to a hot air drying system for new energy lithium batteries. Background Technique

[0002] In the production process of lithium-ion batteries, it is necessary to perform high-temperature drying on materials. Among them, coating drying is a key link in the whole production of lithium-ion batteries, and its purpose is to evenly coat the positive and negative materials on the copper and aluminum foil substrates. It can be said that the coating process determines the uniformity and quality of the battery materials, and plays a decisive role in the performance and cycle life of the battery.

[0003] The lithium-ion battery coating drying heating process is one of the key steps in the battery manufacturing process, which directly affects the performance and production efficiency of the battery; coating drying is mainly to remove the organic solvents in the slurry coated on the current collector, so that the battery materials are cured, thereby forming a stable electrode structure.

[0004] The traditional coating drying process usually uses an electric heater to heat the air, but this method has problems such as high energy consumption and low drying efficiency. Content of the Utility Model

[0005] In view of the problems existing in a hot air drying system for new energy lithium batteries, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a hot air drying system for new energy lithium batteries, which solves the problems that the traditional coating drying process usually uses an electric heater to heat the air, but this method has high energy consumption and low drying efficiency.

[0007] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0008] A hot air drying system for new energy lithium batteries, including a hot air drying box body, an exhaust hole is provided at the bottom of the hot air drying box body, a jet pipe is provided at the top of the inner cavity of the hot air drying box body, jet nozzles are evenly installed at the bottom of the jet pipe, the air inlet of the jet pipe is connected to a gas supply unit through a conduit, the gas supply unit is connected to an air heating unit through a conduit, and the air heating unit is connected to an air drying unit through a conduit.

[0009] As a preferred scheme of a hot air drying system for new energy lithium batteries according to the present utility model, wherein: a box door is hinged to the open end of the hot air drying box body, a plurality of partition plates are arranged at equal distances in the inner cavity of the hot air drying box body, and ventilation holes are opened at equal distances on the partition plates.

[0010] As a preferred embodiment of the hot air drying system for new energy lithium batteries according to the present utility model, the following is provided: The air supply unit is provided as a blower or an air pump. The output end of the air supply unit is butt-jointed with a first conduit by means of a flange. One end of the first conduit away from the air supply unit is butt-jointed with a second conduit by means of a flange. One end of the second conduit away from the first conduit is butt-jointed with the air inlet of the jet pipe.

[0011] As a preferred embodiment of the hot air drying system for new energy lithium batteries according to the present utility model, the following is provided: The air heating unit includes an air heating box. Heating wires are arranged in the inner cavity of the air heating box. The top opening of the air heating box is covered with a sealing cover. The first air outlet interface of the air heating box is butt-jointed with the input end of the air supply unit by means of a flange.

[0012] As a preferred embodiment of the hot air drying system for new energy lithium batteries according to the present utility model, the following is provided: The air drying unit includes a hollow cylinder with one end open. A waterproof and breathable membrane is arranged in the inner cavity of the cylinder. The open end of the cylinder is threadedly connected with a fixing ring. The second air outlet interface of the cylinder is butt-jointed with the air inlet interface of the air heating box.

[0013] As a preferred embodiment of the hot air drying system for new energy lithium batteries according to the present utility model, the following is provided: A support ring is fixedly installed in the inner cavity of the cylinder. The waterproof and breathable membrane is arranged between the support ring and the fixing ring.

[0014] As a preferred embodiment of the hot air drying system for new energy lithium batteries according to the present utility model, the following is provided: An exhaust interface is provided at the exhaust hole. The inner wall of the through hole of the fixing ring is fixedly connected with an intake ring. The intake ring is provided with a return interface. A conduit is connected between the return interface and the exhaust interface.

[0015] Compared with the prior art:

[0016] 1. By providing an air drying unit to filter the moisture in the air, and then heating the dry air through the air heating unit, so as to use the hot dry air to thermally dry the lithium battery, thereby greatly improving the thermal drying efficiency of the lithium battery and being able to shorten the drying cycle and thus reduce the drying energy consumption;

[0017] 2. By recycling the hot air sprayed onto the lithium battery, the heat is recycled and reused, thereby further reducing the energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram provided for Embodiment 1 of the present utility model;

[0019] Figure 2For Embodiment 1 of the present utility model Figure 1 Cross-sectional view;

[0020] Figure 3 For Embodiment 1 of the present utility model Figure 2 Explosion diagram of the air drying unit in

[0021] Figure 4 Structural schematic diagram for Embodiment 2 of the present utility model.

[0022] In the figure: hot air drying box body 1, box door 2, second conduit 3, first conduit 4, air heating box 5, first air outlet interface 51, air inlet interface 52, sealing cover 53, cylinder 6, second air outlet interface 61, fixing ring 7, air inlet ring 71, return interface 711, waterproof breathable membrane 8, support ring 9, exhaust hole 10, jet pipe 11, air supply unit 12, partition board 13. Specific embodiments

[0023] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] The present utility model provides a hot air drying system for new energy lithium batteries. Please refer to Figures 1-3 , which includes a hot air drying box body 1. An exhaust hole 10 is provided at the bottom of the hot air drying box body 1. A jet pipe 11 is provided at the top of the inner cavity of the hot air drying box body 1. Jets are evenly installed at the bottom of the jet pipe 11. The air inlet of the jet pipe 11 is connected to an air supply unit 12 through a conduit. The air supply unit is connected to an air heating unit through a conduit, and the air heating unit is connected to an air drying unit through a conduit.

[0026] The open end of the hot air drying box body 1 is hinged with a box door 2 through a hinge. A plurality of partition boards 13 are equidistantly arranged in the inner cavity of the hot air drying box body 1, and ventilation holes are equidistantly opened on the partition boards 13.

[0027] The air supply unit 12 is configured as a blower or an air pump. The output end of the air supply unit 12 is butt-jointed with a first conduit 4 in a flange manner. One end of the first conduit 4 away from the air supply unit 12 is butt-jointed with a second conduit 3 in a flange manner. One end of the second conduit 3 away from the first conduit 4 is butt-jointed with the air inlet of the jet pipe 11.

[0028] The air heating unit includes an air heating box 5. A heating wire is arranged in the inner cavity of the air heating box 5. The top opening of the air heating box 5 is covered with a sealing cover 53. The first air outlet interface 51 of the air heating box 5 is docked with the input end of the air supply unit 12 in a flange plate manner; the air heated by the air heating box 5 after being dried by the air drying unit is used to heat the lithium battery housing and the internal structure for drying.

[0029] The air drying unit includes a hollow cylinder 6 with one end open. A waterproof breathable membrane 8 is arranged in the inner cavity of the cylinder 6. The open end of the cylinder 6 is threadedly connected with a fixing ring 7. The second air outlet interface 61 of the cylinder 6 is docked with the air inlet interface 52 of the air heating box 5; the water vapor in the air is filtered through the waterproof breathable membrane 8, so as to use the dry air for drying. The drying efficiency is lower, and the drying energy consumption can be effectively reduced.

[0030] A support ring 9 is fixedly installed in the inner cavity of the cylinder 6. The waterproof breathable membrane 8 is arranged between the support ring 9 and the fixing ring 7. At this time, the fixing ring 7 is tightened, so that the fixing ring 7 and the support ring 9 jointly clamp the edge of the waterproof breathable membrane 8.

[0031] During specific use, open the box door 2, place each lithium battery or its accessories that need to be heated and dried on the partition board 13, start the air supply unit 12, so as to draw the outside air into the cylinder 6. The water vapor in the air is filtered by the waterproof breathable membrane 8, and the dry air enters the air heating box 5 to be heated. Then, the hot dry air enters the jet pipe 11 through the first conduit 4 and the second conduit 3. Then, the hot dry air is sprayed onto the lithium battery through the jet head to achieve the purpose of hot drying the lithium battery.

[0032] Embodiment 2:

[0033] Refer to the appendix Figure 4 , which is different from Embodiment 1 in that: an exhaust interface 14 is provided at the exhaust hole 10. The inner wall of the through hole of the fixing ring 7 is fixedly connected with an intake ring 71. A return interface 711 is provided on the intake ring 71. The return interface 711 and the exhaust interface 14 are connected by a conduit.

[0034] During specific use, open the box door 2, place each lithium battery or its accessories that need to be heated and dried on the partition board 13, start the air supply unit 12, so as to draw the outside air into the cylinder 6. The water vapor in the air is filtered by the waterproof breathable membrane 8, and the dry air enters the air heating box 5 to be heated. Then, the hot dry air enters the jet pipe 14 through the first conduit 4 and the second conduit 3. Then, the hot dry air is sprayed onto the lithium battery through the jet head to achieve the purpose of hot drying the lithium battery;

[0035] The hot air discharged through the exhaust hole 10 re-enters the cylinder 6 through the conduit, thereby achieving a certain degree of heat recovery and reuse.

[0036] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any manner. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hot air drying system for new energy lithium batteries, comprising a hot air drying box body (1), an exhaust hole (10) is arranged at the bottom of the hot air drying box body (1), a jet pipe (11) is arranged at the top of the inner cavity of the hot air drying box body (1), and jet nozzles are uniformly installed at the bottom of the jet pipe (11), characterized in that: The air inlet of the jet pipe (11) is connected to a gas supply unit (12) through a conduit. The gas supply unit is connected to an air heating unit through a conduit, and the air heating unit is connected to an air drying unit through a conduit.

2. The hot air drying system for new energy lithium batteries according to claim 1, wherein A box door (2) is hinged to the open end of the hot air drying box body (1) through a hinge. A plurality of partition plates (13) are equidistantly arranged in the inner cavity of the hot air drying box body (1), and ventilation holes are equidistantly formed in the partition plates (13).

3. The hot air drying system for new energy lithium batteries according to claim 1, characterized in that, The gas supply unit (12) is set as a blower or an air pump. The output end of the gas supply unit (12) is butted with a first conduit (4) in a flange manner. One end of the first conduit (4) far away from the gas supply unit (12) is butted with a second conduit (3) in a flange manner. One end of the second conduit (3) far away from the first conduit (4) is butted with the air inlet of the jet pipe (11).

4. A hot air drying system for new energy lithium batteries according to claim 2 or 3, characterized in that, The air heating unit includes an air heating box (5). Heating wires are arranged in the inner cavity of the air heating box (5). The top opening of the air heating box (5) is covered with a sealing cover (53). The first air outlet interface (51) of the air heating box (5) is butted with the input end of the gas supply unit (12) in a flange manner.

5. The hot air drying system for new energy lithium batteries according to claim 4, wherein, The air drying unit includes a hollow cylinder (6) with one end open. A waterproof breathable membrane (8) is arranged in the inner cavity of the cylinder (6). A fixing ring (7) is threadedly connected to the open end of the cylinder (6). The second air outlet interface (61) of the cylinder (6) is butted with the air inlet interface (52) of the air heating box (5).

6. The hot air drying system for new energy lithium batteries according to claim 5, characterized in that, A support ring (9) is fixedly installed in the inner cavity of the cylinder (6). The waterproof breathable membrane (8) is arranged between the support ring (9) and the fixing ring (7).

7. A hot air drying system for new energy lithium batteries according to claim 5 or 6, characterized in that, An exhaust interface (14) is provided at the exhaust hole (10). The inner wall of the through hole of the fixing ring (7) is fixedly connected with an intake ring (71). A return interface (711) is provided on the intake ring (71). The return interface (711) and the exhaust interface (14) are connected through a conduit.

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