Pole piece drying oven

Abstract

External environment air is conveyed into an air inlet pipeline through an air inlet, meanwhile, hot air is conveyed into the air inlet pipeline through a temperature control pipeline, the hot air and the external environment air are mixed, so that air with the appropriate temperature exists in an air supply pipeline, and an exhaust fan is used for guaranteeing the air speed of the air supply pipeline. The two air supply outlets are used for conveying air with proper temperature to the two negative pressure parts respectively, and the air temperature is equivalent to the internal temperature of the drying oven main body, so that when the negative pressure parts absorb an evaporation solvent, the evaporation solvent is not easy to condense at the pole piece inlet and the pole piece outlet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the lithium battery pole piece drying field, concretely relates to a pole piece oven. BACKGROUND

[0002] In the production and manufacturing process of lithium battery, the pole piece and the diaphragm need to be heated and dried after coating by an oven; the internal space of the oven is connected in series and communicated, in order to prevent the solvent from leaking to the external environment of the oven, generally, the first and last sections of the oven are provided with negative pressure cavities, the negative pressure cavities are used for sucking to ensure that the first and last sections of the oven maintain a negative pressure state and prevent the evaporated solvent (water vapor, NMP, etc.) from leaking to the environment. In the prior art, the negative pressure cavities will extract the air from the external environment, the temperature is low, and the oven adopts a total air inlet and total air outlet structure, the solvent is discharged from the last section of the oven, and the evaporated solvent will accumulate in the last section of the oven, so that the last section of the oven has a high solvent concentration and is prone to condensation at the tail. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a pole piece oven which can solve the problem that the solvent of the tail section of the existing oven is prone to condensation.

[0004] The utility model discloses a technical scheme that solves the technical problem: providing a pole piece oven, comprising an oven main body, two negative pressure parts and two air supply devices, the oven main body is provided with a pole piece inlet and a pole piece outlet, the two negative pressure parts are used for forming negative pressure at the pole piece inlet and the pole piece outlet respectively.

[0005] The air supply device comprises an air inlet pipeline, an air extractor and an air supply pipeline, one end of the air inlet pipeline is provided with an air inlet, the other end of the air inlet pipeline is connected with the air extractor, the air inlet pipeline is communicated with a temperature control pipeline, the temperature control pipeline is used for conveying hot air, one end of the air supply pipeline is connected with the air extractor, and the other end of the air supply pipeline is provided with an air outlet; the two air outlets are used for supplying air to the two negative pressure parts respectively.

[0006] As a further improvement of the above technical scheme, the oven main body is further provided with a lampshade, the lampshade is communicated with an air inlet pipeline and an air outlet pipeline, and the air outlet pipeline is communicated with the temperature control pipeline.

[0007] As a further improvement of the above technical scheme, the air inlet pipeline and the temperature control pipeline are provided with an air temperature control part, and the air temperature control part is used for controlling the air volume of the air inlet pipeline input to the air extractor and the air volume of the temperature control pipeline input to the air extractor.

[0008] As a further improvement of the above technical scheme, a temperature sensor is arranged on the air supply pipeline, and the output end of the temperature sensor is electrically connected with the input end of the air temperature control part.

[0009] As a further improvement of the above technical solution, the wind temperature control member comprises a linkage air valve, which is connected with the air inlet pipe and the temperature control pipe.

[0010] As a further improvement of the above technical solution, the air inlet pipe is provided with a detachable reserved pipe, which is located between the temperature control pipe and the air extractor, and is used for placing a heating bag.

[0011] As a further improvement of the above technical solution, the air supply pipe is connected with an air supply valve, which is used for controlling the air outlet volume of the air supply port.

[0012] As a further improvement of the above technical solution, the air supply port is connected with a wind cover, which is conical.

[0013] As a further improvement of the above technical solution, the temperature control pipe, the air inlet pipe and the air supply pipe are all square.

[0014] As a further improvement of the above technical solution, the oven body is further provided with an oven exhaust pipe, and the two negative pressure members are both connected with negative pressure exhaust pipes, and the oven exhaust pipe and the two negative pressure exhaust pipes are all communicated.

[0015] The beneficial effects of the present application are as follows: the external environment air is delivered into the air inlet pipe through the air inlet port, at the same time, the temperature control pipe delivers hot air into the air inlet pipe, the hot air and the external environment air are mixed, so that the air supply pipe has air with appropriate temperature, the air extractor is used for ensuring the air speed of the air supply pipe, the two air supply ports deliver air with appropriate temperature to the two negative pressure members respectively, and the air temperature is equivalent to the internal temperature of the oven body, so that when the negative pressure member absorbs the evaporated solvent, the evaporated solvent is not easy to condense at the pole piece inlet and the pole piece outlet. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and examples.

[0017] Figure 1 is a structural schematic view of the air supply device provided by the preferred embodiment of the present application.

[0018] Reference signs: 1, air inlet pipe, 2, air extractor, 3, air supply pipe, 4, object placing table;

[0019] 11, air inlet port, 12, temperature control pipe, 13, wind temperature control member, 14, reserved pipe, 31, air supply port, 32, temperature sensor, 33, air supply valve;

[0020] 131, linkage air valve, 311, wind cover. DETAILED DESCRIPTION

[0021] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and other embodiments obtained by the skilled in the art without creative labor based on the embodiments of the utility model all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent are not single component direct connection, but can be composed of better connection structure by adding or reducing connection auxiliary parts according to the specific implementation situation, such as fixed connection / fixed installation, which can be selected according to the needs, such as screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and the like, such as detachable connection, which can be selected according to the needs, such as screw connection, bolt connection, threaded connection, buckle connection, mortise and tenon connection, magic tape connection and the like. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0022] The utility model discloses an electrode plate oven, including oven main part, two negative pressure spare and two air supply device, oven main part is provided with electrode plate entrance and electrode plate export, and the electrode plate is transported to electrode plate export through electrode plate entrance and passes through oven main part and carries out drying, two negative pressure spare is used for forming negative pressure at electrode plate entrance and electrode plate export respectively, to suck the solvent of evaporation.

[0023] Please see Figure 1 , and the air supply device includes an air inlet pipeline 1, an air extractor 2, an air supply pipeline 3, and a placement table 4. The air extractor 2 is placed on the placement table 4, and the placement table 4 is used to provide support for the air extractor 2. The air extractor 2 is used to ensure the air speed of the air supply pipeline 3, so that there is a stable air output in the air supply pipeline 3.

[0024] Specifically, one end of the air inlet pipeline 1 is provided with an air inlet 11, and the other end of the air inlet pipeline 1 is connected with the air extractor 2. The air inlet pipeline 1 is communicated with a temperature control pipeline 12, which is used to convey hot air. One end of the air supply pipeline 3 is connected with the air extractor 2, and the other end of the air supply pipeline 3 is provided with an air outlet 31. Two air outlets 31 are used to supply air to two negative pressure devices respectively. Through the air inlet 11, the external environment air is conveyed into the air inlet pipeline 1. At the same time, the temperature control pipeline 12 conveys hot air to the air inlet pipeline 1. The hot air and the external environment air are mixed, so that the air in the air supply pipeline 3 has a suitable temperature. Through the two air outlets 31, the air with a suitable temperature is conveyed to the two negative pressure devices respectively, and the air temperature is equivalent to the internal temperature of the oven main body. Therefore, when the negative pressure device sucks the evaporated solvent, the evaporated solvent is not easy to condense at the electrode plate inlet and the electrode plate outlet.

[0025] The oven body is further provided with a lampshade, the lampshade is communicated with an air inlet pipeline and an air outlet pipeline, and the air outlet pipeline is communicated with the temperature control pipeline 12. During the drying of the pole piece, the lampshade needs to be cooled by cooling air due to the heating and temperature rise. The cooling air is input into the lampshade through the air inlet pipeline, the temperature of the cooling air rises after passing through the lampshade, and the cooling air is input into the temperature control pipeline 12 through the air outlet pipeline, so that the cooling air is used twice, which is beneficial to reduce the heating cost, avoid waste of heat and save energy.

[0026] Further, the air temperature control member 13 is arranged between the air inlet pipeline 1 and the temperature control pipeline 12, the air temperature control member 13 is used for controlling the air volume of the air inlet pipeline 1 input into the air extractor 2 and the air volume of the temperature control pipeline 12 input into the air extractor 2, the temperature sensor 32 is arranged on the air supply pipeline 3, the output end of the temperature sensor 32 is electrically connected with the input end of the air temperature control member 13, the temperature sensor 32 monitors the air temperature in the air supply pipeline 3 in real time, when the air temperature measured by the temperature sensor 32 deviates from the actual required air temperature, the temperature sensor 32 sends a signal to the air temperature control member 13, the air temperature control member 13 controls the air volume of the air inlet pipeline 1 and the temperature control pipeline 12, adjusts the proportion of the high-temperature air and the low-temperature air, so that the air temperature in the air supply pipeline 3 reaches the actual required temperature.

[0027] The air inlet pipeline 1 is provided with a detachable reserved pipeline 14, the reserved pipeline 14 is located between the temperature control pipeline 12 and the air extractor 2, and the reserved pipeline 14 is used for placing a heating bag. When the temperature of the on-site heat source is insufficient, the reserved pipeline 14 can be detached from the air inlet pipeline 1, a heating bag is placed in the reserved pipeline 14, and then the reserved pipeline 14 with the heating bag is installed on the air inlet pipeline 1. The heating bag can be supplemented to heat, so as to ensure the temperature of the output hot air.

[0028] The air supply pipeline 3 is connected with an air supply valve 33, the air supply valve 33 is used for controlling the air volume of the air supply port 31, and the air volume of the air supply port 31 is adapted to the negative pressure of the negative pressure member.

[0029] The air temperature control member 13 comprises a linkage air valve 131, the linkage air valve 131 is connected with the air inlet pipeline 1 and the temperature control pipeline 12, and the linkage air valve 131 can control the air volume of the low-temperature air in the air inlet pipeline 1 and the air volume of the high-temperature air in the temperature control pipeline 12 at the same time, so that the proportion of the two belongs to a suitable range.

[0030] The air supply port 31 is connected with a wind cover 311, the wind cover 311 is conical, and the conical wind cover 311 is more conducive to the outward delivery of the hot air in the air supply pipeline 3.

[0031] The temperature control pipeline 12, the air inlet pipeline 1 and the air supply pipeline 3 are all square, the square air pipeline is simple to manufacture and convenient to install, the required raw materials are relatively less, and meanwhile the square air pipeline can be conveniently adapted to other building structures.

[0032] The oven body of the pole piece oven is further provided with an oven exhaust pipe, the two negative pressure pieces are both connected with negative pressure exhaust pipes, and the oven exhaust pipe and the two negative pressure exhaust pipes are communicated. The two negative pressure pieces ensure that the pole piece inlet and the pole piece outlet are both in a negative pressure state, and the evaporated solvent is concentrated and delivered into the oven exhaust pipe through the two negative pressure exhaust pipes, so that the evaporated solvent is concentrated and collected through the oven exhaust pipe, and leakage of the evaporated solvent into the environment is prevented.

[0033] The above is a specific description of the preferred embodiment of the utility model, but the utility model creation is not limited to the described embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A pole piece oven characterized by: The oven body is provided with a pole piece inlet and a pole piece outlet, two negative pressure pieces are respectively used to form negative pressure at the pole piece inlet and the pole piece outlet; The air supply device comprises an air inlet pipeline, an air extractor and an air supply pipeline, one end of the air inlet pipeline is provided with an air inlet, the other end of the air inlet pipeline is connected with the air extractor, the air inlet pipeline is communicated with a temperature control pipeline, the temperature control pipeline is used for conveying hot air, one end of the air supply pipeline is connected with the air extractor, and the other end of the air supply pipeline is provided with an air outlet; two air outlets are respectively used to supply air to two negative pressure pieces.

2. The pole piece oven of claim 1, wherein: The oven body is further provided with a lampshade, the lampshade is communicated with an air inlet pipeline and an air outlet pipeline, and the air outlet pipeline is communicated with the temperature control pipeline.

3. The pole piece oven of claim 1, wherein: The air inlet pipeline and the temperature control pipeline are provided with an air temperature control piece, which is used to control the air volume of the air inlet pipeline input to the air extractor and the air volume of the temperature control pipeline input to the air extractor.

4. The pole piece oven of claim 3, wherein: The air supply pipeline is provided with a temperature sensor, and the output end of the temperature sensor is electrically connected with the input end of the air temperature control piece.

5. The pole piece oven of claim 3, wherein: The air temperature control piece comprises a linkage air valve, and the linkage air valve is connected with the air inlet pipeline and the temperature control pipeline.

6. The pole piece oven of claim 1, wherein: The air inlet pipeline is provided with a detachable reserved pipeline, the reserved pipeline is located between the temperature control pipeline and the air extractor, and the reserved pipeline is used to place a heating bag.

7. The pole piece oven of claim 1, wherein: The air supply pipeline is connected with an air supply air valve, and the air supply air valve is used to control the air outlet volume of the air outlet.

8. The pole piece oven of claim 1, wherein: The air outlet is connected with an air cover, and the air cover is conical.

9. The pole piece oven of claim 1, wherein: The temperature control pipeline, the air inlet pipeline and the air supply pipeline are all square.

10. The pole piece oven of any one of claims 1-9, wherein: The oven body is further provided with an oven exhaust pipeline, two negative pressure exhaust pipelines are connected with the two negative pressure pieces, and the oven exhaust pipeline and the two negative pressure exhaust pipelines are communicated.

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