Tunnel type baking unit capable of rapidly balancing pressure between adjacent boxes and baking line of tunnel type baking unit

Abstract

The invention provides a tunnel type baking unit capable of rapidly balancing pressure between adjacent boxes and a baking line of the tunnel type baking unit. The baking unit comprises two work boxes at a minimum. A protection cover and a two-door transmission valve are arranged between the two work boxes. A first sealing door seals a box opening of the first work box, a second sealing door seals a box opening of the second work box, a first sealing ring is arranged between the first sealing door and the first work box, and a second sealing ring is arranged between the second sealing door and the second work box. The tunnel type baking unit further comprises a pipe, and valves are connected into the pipe in series. When the first work box, the protective cover and the second box body are required to be communicated and pressure differences exist between the first work box, the protective cover and the second work box, the valves are firstly opened, the internal space of the first work box, the internal space of the protective cover and the internal space of the second work box are communicated, the pressure differences among the first work box, the protective cover and the second work box are zero, and then the two-door transmission valve is opened. The tunnel type baking unit has the advantages of being simple in structure and high in drying efficiency.

Description

technical field [0001] The invention relates to a tunnel-type baking unit, in particular to a tunnel-type baking unit and its baking line which can quickly balance the pressure between adjacent boxes for baking lithium-ion battery pole pieces or lithium-ion batteries. . Background technique [0002] In the manufacturing process of lithium-ion battery pole pieces or lithium-ion batteries, it is necessary to deeply dry the lithium-ion battery pole pieces or lithium-ion batteries. The most common drying equipment is the internal circulation single box oven, which first puts the baked lithium-ion battery pole piece or lithium-ion battery into the vacuum oven, then seals the vacuum oven, Under normal pressure, first heat the baked object in the box and raise the temperature. When the temperature in the box reaches the requirement, vacuumize the box to remove moisture under the condition of heat preservation. When lithium-ion battery pole pieces or lithium-ion batteries After th...

AI Technical Summary

Problems solved by technology

However, the above-mentioned two adjacent boxes often have a pressure difference due to different environments, so that it is easy to make when the first airtight door and the second airtight door are respectively away from the respective adjacent boxes and rise, the The first sealing ring on the first airtight door or the second sealing ring on the second airtight door falls off, and once the first sealing ring or the second sealing ring falls off, since the sealing between the boxes is complete, the operation It is difficult for personnel to go in and take out the sealing ring; and to take a step back, even if you can go in, you need to remove the box on the entire baking line, and then go in to get it, but in this way, you need to stop baking, and the lithium-ion battery In the manufacturing process of pole pieces or lithium-ion batteries, the entire process is an assembly line. Not only the baking process must be stopped, but other processes also need to be stopped to cooperate, which greatly affects the progress and efficiency of baking; although some people try to Set pressure sensors in adjacent boxes respectively, calculate the pressure difference between adjacent boxes, and then boost the pressure of the box with low pressure to reduce the pressure difference between the two boxes, but because the adjacent boxes The pressure difference between the body is relatively small, because the first sealing door and the second sealing door are relatively large, it is easy to cause the first sealing ring and the second sealing ring to fall off, and because the pressure difference itself is not large, so the regulation Not only is it slow, but it is also very difficult

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