Anode material packaging room capable of preventing gas replacement

Abstract

The utility model discloses a positive electrode material packaging room for preventing gas replacement, which comprises a packaging room, a buffer room and a gas source assembly, the buffer room is communicated with the packaging room through a first door body, and the buffer room is also provided with a second door body communicated with the outside; and the air source assembly is connected with the buffer room, and the air source assembly is used for conveying pure compressed air into the buffer room. Compressed air is conveyed into the buffer room, so that the buffer room is isolated from external wet air, gas replacement cannot be carried out, and it is guaranteed that the dew point of air in the packaging room is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of battery material production, in particular to a packaging room for a positive electrode material that prevents gas replacement. Background Art

[0002] Due to the unique crystal structure of the battery positive electrode material, it is extremely easy to absorb water, and the water content of its products also affects the product quality; therefore, in the packaging link, the dew point requirement for the environment in the packaging room is extremely strict, and the dew point needs to reach below -40° under normal pressure before packaging can be carried out.

[0003] Patent CN109599556A discloses a production system for battery positive electrode materials, which includes a main reaction kettle, a clarification tank, a secondary reaction kettle, an aging tank, a slurry circulation pump, a solid-liquid separation system, a drying system and a packaging system. The top of the main reaction kettle is provided with a first feed pipe, a second feed pipe and a third feed pipe; the first feed pipe, the second feed pipe and the third feed pipe are respectively connected to a main raw material salt solution preparation tank, an alkali solution preparation tank and an ammonia water preparation tank. The bottom of the main reaction kettle is connected to the top of the aging tank through a discharge pipe. The bottom of the aging tank is connected to the solid-liquid separation system through an aging discharge pipe. The solid-liquid separation system, the drying system and the packaging system are sequentially connected through a material pipeline; the overflow pipeline of the main reaction kettle is connected to the clarification tank; the overflow port of the clarification tank is connected to the secondary reactor through a clear liquid pipe. The bottom of the secondary reaction kettle and the bottom of the clarification tank are refluxed to the top of the main reaction kettle through a slurry circulation pump.

[0004] The packaging system of the above prior art will cause the dew point of the packaging room to fluctuate when materials enter and exit, affecting the quality of the positive electrode material. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a packaging room for a positive electrode material that prevents gas replacement, so as to solve the technical problem that the packaging system in the prior art will cause the dew point of the packaging room to fluctuate when materials enter and exit, affecting the quality of the positive electrode material.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a packaging room for a positive electrode material that prevents gas replacement, including:

[0008] A packaging room;

[0009] A buffer room, the buffer room is communicated with the packaging room through a first door body, and the buffer room is also provided with a second door body communicating with the outside; and

[0010] A gas source assembly, the gas source assembly is connected to the buffer room, and the gas source assembly is used to transport pure compressed air into the buffer room.

[0011] In some embodiments, the dew point of the compressed air is -60 °C, and the pressure of the compressed gas is 0.78 Mpa.

[0012] In some embodiments, the gas source assembly includes a gas source, a gas supply pipeline, and a valve. One end of the gas supply pipeline is connected to the gas source, and the other end of the gas supply pipeline extends into the buffer room. The valve is arranged on the gas supply pipeline to control the opening and closing of the gas supply pipeline.

[0013] In some embodiments, the gas supply pipeline includes a main pipeline and a plurality of branch pipelines. The main pipeline is connected to the gas source, and the plurality of branch pipelines are arranged at intervals. One end of each branch pipeline is connected to the main pipeline, and the other end of the branch pipeline extends into the buffer room. Among them, the valve is arranged on the main pipeline.

[0014] In some embodiments, a filtering device is further provided at one end of each branch pipeline extending into the buffer room.

[0015] In some embodiments, there are two gas supply pipelines, and the two gas supply pipelines are respectively located on opposite sides of the buffer room. Correspondingly, there are two valves, and the two valves are respectively arranged on the two gas supply pipelines.

[0016] In some embodiments, the valve includes an electromagnetic valve.

[0017] In some embodiments, the packaging room for the positive electrode material to prevent gas replacement further includes a detection device. The detection device is arranged on the wall of the buffer room and is used to detect the pressure difference between the buffer room and the outside.

[0018] In some embodiments, the detection device includes a differential pressure gauge.

[0019] In some embodiments, the second door body is an electric lifting door, and the electric lifting door, the differential pressure gauge, and the electromagnetic valve of the gas source assembly are electrically connected.

[0020] Compared with the prior art, the present utility model provides a packaging room for a cathode material that prevents gas replacement. The buffer room is communicated with the packaging room through a first door body. The buffer room is also provided with a second door body communicating with the outside world. The gas source assembly is connected to the buffer room. The gas source assembly is used to transport pure compressed air into the buffer room. Specifically, when materials enter the packaging room, the first door body and the second door body are closed. Subsequently, pure compressed air is transported into the buffer room through the gas source assembly. When the positive pressure in the buffer room reaches 20 Pa compared with the outside world, the second door body is opened, and the materials are sent into the buffer room. The second door body is closed, the first door body is opened, and finally the materials are transported to the packaging room. By transporting compressed air into the buffer room, the buffer room is isolated from the humid air outside, and gas replacement cannot occur, ensuring the stability of the dew point of the air in the packaging room.

[0021] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and to be implemented in accordance with the content of the description, the preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings. The specific implementation manners of the present utility model are given in detail by the following embodiments and their accompanying drawings. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of an embodiment of a packaging room for a cathode material that prevents gas replacement provided by the present utility model.

[0023] Description of the Reference Numerals:

[0024] 1 - Packaging room, 2 - Buffer room, 3 - First door body, 4 - Second door body, 5 - Gas source assembly, 51 - Main pipeline, 52 - Branch pipeline, 53 - Valve. Specific Embodiment

[0025] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In order to solve the technical problem that the dew point of the packaging room fluctuates when materials enter and exit in the prior art packaging system, which affects the quality of the cathode material, the present utility model provides a packaging room for a cathode material that prevents gas replacement, which can isolate the buffer room from the humid air outside, prevent gas replacement, and ensure the stability of the dew point of the air in the packaging room.

[0027] Please refer to Figure 1 , Figure 1 is a schematic structural diagram of a packaging room for a cathode material that prevents gas replacement in an embodiment of the present utility model.

[0028] The utility model provides a cathode material packaging room for preventing gas replacement, which includes a packaging room 1, a buffer room 2 and a gas source assembly 5. The buffer room 2 is communicated with the packaging room 1 through a first door 3, and the buffer room 2 is also provided with a second door 4 communicating with the outside world; the gas source assembly 5 is connected with the buffer room 2, and the gas source assembly 5 is used to convey pure compressed air into the buffer room 2.

[0029] In this embodiment, the buffer room 2 is communicated with the packaging room 1 through the first door 3, the buffer room 2 is also provided with the second door 4 communicating with the outside world, the gas source assembly 5 is connected with the buffer room 2, and the gas source assembly 5 is used to convey pure compressed air into the buffer room 2. Specifically, when materials enter the packaging room 1, the first door 3 and the second door 4 are closed, and then pure compressed air is conveyed into the buffer room 2 through the gas source assembly 5. When the buffer room 2 reaches a positive pressure of 20 Pa with the outside world, the second door 4 is opened, the materials are sent into the buffer room 2, the second door 4 is closed, the first door is opened, and finally the materials are conveyed into the packaging room 1. By conveying compressed air into the buffer room 2, the buffer room 2 is isolated from the external humid air, and gas replacement cannot be carried out, ensuring the stability of the dew point of the air in the packaging room 1.

[0030] In one embodiment, the dew point of the compressed air is -60 °, and the pressure of the compressed gas is 0.78 Mpa.

[0031] In this embodiment, the dew point requirement for the environment in the packaging room 1 is extremely strict, and the dew point needs to reach -40 ° under normal pressure. In order to ensure the environmental stability of the packaging room 1, the dew point of the compressed air conveyed into the buffer room 2 is -60 °, and when the buffer room 2 reaches a positive pressure of 20 Pa with the outside world, opening the second door 4 has a better isolation effect. Therefore, the pressure of the compressed gas is set to 0.78 Mpa.

[0032] In one embodiment, the gas source assembly 5 includes a gas source, a gas supply pipeline and a valve 53. One end of the gas supply pipeline is connected to the gas source, the other end of the gas supply pipeline extends into the buffer room 2, and the valve 53 is arranged on the gas supply pipeline to control the opening and closing of the gas supply pipeline.

[0033] In this embodiment, the gas source is used to provide compressed gas. The gas supply pipeline connects the gas source and the buffer room 2. The valve 53 is arranged on the gas supply pipeline to control the gas transportation. Specifically, in use, first open the valve 53, and the gas source transports compressed air into the buffer room 2 through the gas supply pipeline to ensure that the air pressure in the buffer room 2 is greater than the external air pressure, isolating the buffer room 2 from the external humid air and avoiding gas replacement.

[0034] It should be noted that the gas source is set to provide compressed air with a dew point of -60°. This is prior art and will not be elaborated here.

[0035] In one embodiment, the gas supply pipeline includes a main pipeline 51 and a plurality of branch pipelines 52. The main pipeline 51 is connected to the gas source, and the plurality of branch pipelines 52 are arranged at intervals. One end of each branch pipeline 52 is connected to the main pipeline 51, and the other end of the branch pipeline 52 extends into the buffer room 2. Among them, the valve 53 is arranged on the main pipeline 51.

[0036] In this embodiment, in order to improve the gas transportation efficiency and ensure that the compressed gas can quickly fill the buffer room 2, the gas supply pipeline includes a main pipeline 51 and a plurality of branch pipelines 52. The main pipeline 51 is located beside the buffer room 2. The main pipeline 51 is respectively connected to the gas source and the branch pipelines 52. One end of the branch pipeline 52 extends into the buffer room 2. The plurality of branch pipelines 52 are arranged at intervals along the length direction of the buffer room 2. Using the plurality of branch pipelines 52 to transport compressed air into the buffer room 2 simultaneously can quickly fill the buffer room 2, save time, and ensure the efficiency of material transfer.

[0037] In one embodiment, a filtering device is further arranged at one end of each branch pipeline 52 extending into the buffer room 2.

[0038] In this embodiment, the gas source assembly 5 only works during material transfer. In order to prevent foreign objects from entering the branch pipeline 52 and causing blockage when it is not working, a filtering device is further arranged at one end of the branch pipeline 52 extending into the buffer room 2. By setting the filtering device, foreign objects can be effectively prevented from entering the branch pipeline 52.

[0039] Specifically, the filtering device is a filter mesh.

[0040] In one embodiment, there are two gas supply pipelines, and the two gas supply pipelines are respectively located on opposite sides of the buffer room 2. Correspondingly, there are two valves 53, and the two valves 53 are respectively arranged on the two gas supply pipelines.

[0041] In this embodiment, in order to improve the gas delivery efficiency, gas supply pipelines are provided on both opposite sides of the buffer room 2.

[0042] In one embodiment, the valve 53 includes an electromagnetic valve.

[0043] In one embodiment, the positive electrode material packaging room for preventing gas displacement further includes a detection device, the detection device is arranged on the wall of the buffer room 2, and the detection device is used to detect the pressure difference between the buffer room 2 and the outside.

[0044] In this embodiment, when the pressure difference between the buffer room 2 and the outside reaches a positive pressure of 20 Pa, it has a good isolation effect. In order to be able to detect the pressure difference between the buffer room 2 and the outside in real time, a detection device is also provided. Through the detection device, the pressure difference between the buffer room 2 and the outside can be detected in real time, which is convenient for the operator to open the second door body 4 in time.

[0045] In one embodiment, the detection device includes a differential pressure gauge.

[0046] In this embodiment, the detection device is a differential pressure gauge. Through the differential pressure gauge, the pressure difference between the buffer room 2 and the outside can be detected in real time, which is convenient for the operator to control the second door body 4 in real time.

[0047] It should be noted that the differential pressure gauge is a prior art and will not be elaborated here.

[0048] In another embodiment, the detection device includes a first pressure gauge and a second pressure gauge. The first pressure gauge is arranged inside the buffer room 2, and the second pressure gauge is arranged outside the buffer room 2. The first pressure gauge can detect the air pressure inside the buffer room 2, and the second pressure gauge can detect the air pressure outside. By using the first pressure gauge and the second pressure gauge in cooperation, the pressure difference between the buffer room 2 and the outside can also be detected.

[0049] In one embodiment, the second door body 4 is an electric lifting door, and the electric lifting door, the differential pressure gauge and the electromagnetic valve of the gas source assembly 5 are electrically connected.

[0050] In this embodiment, the electric lifting door includes a control switch and an electric lifting door body. The control switch is electrically connected to the motor of the electric lifting door body and is used to control the operation of the motor, so as to open or close the electric lifting door body. The control switch is also electrically connected to the differential pressure gauge and the solenoid valve, and the control switch is also electrically interlocked with the differential pressure gauge and the solenoid valve. That is, when the button of the control switch is pressed, the solenoid valve is opened first, and compressed air fills the entire buffer room 2 through the air supply pipeline. When the buffer room 2 reaches a positive pressure of 20 Pa with the outside world, the differential pressure gauge closes the circuit, thereby controlling the motor to operate to open the electric lifting door body.

[0051] For a better understanding of the present invention, the following is a detailed description of the technical solution of the present invention in conjunction with Figure 1 the present invention:

[0052] When the second door body 4 needs to be opened, when the button of the control switch is pressed, the solenoid valve is opened first, and compressed air fills the entire buffer room 2 through the air supply pipeline. When the buffer room 2 reaches a positive pressure of 20 Pa with the outside world, the differential pressure gauge closes the circuit, thereby controlling the motor to operate to open the electric lifting door body. When the second door body 4 needs to be opened as required, the buffer room 2 is first filled with compressed air with a dew point of -60 °, so that the buffer room 2 maintains a positive pressure of 20 Pa with the outside world, and then the second door body 4 is opened, so that the buffer room 2 is isolated from the humid air outside and gas replacement cannot be carried out, ensuring the stability of the dew point of the air in the packaging room 1.

[0053] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A positive electrode material packaging room for preventing gas replacement, characterized in that: It includes: Packing room; A buffer room, the buffer room is connected to the packaging room through a first door body, and the buffer room is also provided with a second door body connected to the outside; as well as An air source component is connected to the buffer room, and is used to transport pure compressed air into the buffer room.

2. The positive electrode material packaging room for preventing gas replacement according to claim 1, characterized in that: The dew point of the compressed air is -60°, and the pressure of the compressed air is 0.78 MPa.

3. The positive electrode material packaging room for preventing gas replacement according to claim 1, characterized in that: The gas source assembly includes a gas source, a gas supply pipeline and a valve. One end of the gas supply pipeline is connected to the gas source, and the other end of the gas supply pipeline extends into the buffer room. The valve is arranged on the gas supply pipeline to control the opening and closing of the gas supply pipeline.

4. The positive electrode material packaging room for preventing gas replacement according to claim 3, characterized in that: The gas supply pipeline includes a main pipeline and multiple branch pipelines, the main pipeline is connected to the gas source, and the multiple branch pipelines are arranged at intervals. One end of each branch pipeline is connected to the main pipeline, and the other end of the branch pipeline extends into the buffer room, wherein the valve is arranged on the main pipeline.

5. The positive electrode material packaging room for preventing gas replacement according to claim 4, characterized in that: One end of each branch pipe extending into the buffer room is also provided with a filtering device.

6. The positive electrode material packaging room for preventing gas replacement according to claim 3, characterized in that: There are two air supply pipelines, which are respectively located on two opposite sides of the buffer room. Correspondingly, there are two valves, which are respectively arranged on the two air supply pipelines.

7. The positive electrode material packaging room for preventing gas replacement according to claim 3, characterized in that: The valve comprises a solenoid valve.

8. The positive electrode material packaging room for preventing gas replacement according to claim 1, characterized in that: The positive electrode material packaging room for preventing gas replacement also includes a detection device, which is arranged on the wall of the buffer room and is used to detect the pressure difference between the buffer room and the outside world.

9. The positive electrode material packaging room for preventing gas replacement according to claim 8, characterized in that: The detection device comprises a differential pressure gauge.

10. The positive electrode material packaging room for preventing gas replacement according to claim 9, characterized in that: The second door body is an electric lifting door, and the electric lifting door, the pressure difference gauge and the solenoid valve of the air source assembly are electrically connected.

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