A lithium battery dual-return servo valve

Abstract

This utility model relates to the field of valve technology, and in particular to a lithium battery dual reflux servo valve, including a reflux valve, a first feed valve, and a second feed valve. Each of the reflux valve, the first feed valve, and the second feed valve includes a valve body with a valve core inside. The first feed valve and the second feed valve are distributed on both sides of the reflux valve and connected by a pipe. Each of the reflux valve, the first feed valve, and the second feed valve is connected to a servo motor and controlled to open and close by the servo motor. The front ends of the first feed valve and the second feed valve are connected to a reflux pipe and have a reflux port. The front end of the reflux valve is connected to a pipe and has a feed port. The top of the reflux valve has a discharge port. This lithium battery dual reflux servo valve adopts dual reflux channels, with each gap size corresponding to one reflux channel. The opening and closing time of each channel is controlled by a servo motor, thereby achieving different gap sizes, making control simpler and greatly reducing the difficulty of debugging.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a lithium battery dual reflux servo valve. Background Technology

[0002] In the feeding system of lithium battery intermittent coating equipment, the return valve is a key component. Its main function is to precisely control the slurry flow rate, stabilize the slurry pressure, and prevent slurry sedimentation and solidification. Currently, the industry uses a single return valve design. As the most critical coating process affecting battery performance, the quality of coating directly impacts battery capacity. The return valve controls the coating length and the thickness at both ends of the coating process, playing a crucial role in the overall coating quality. Existing pneumatic gap coating valves are difficult to adjust for different coating thicknesses and lengths, and also struggle to achieve the required coating thickness reduction precision at the beginning and end of the coating process, thus affecting coating quality. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lithium battery dual reflux servo valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A lithium battery dual reflux servo valve is designed, comprising a reflux valve, a first feed valve, and a second feed valve. Each of the reflux valve, the first feed valve, and the second feed valve includes a valve body, in which a valve core is disposed. The first feed valve and the second feed valve are distributed on both sides of the reflux valve and connected by a pipe. Each of the reflux valve, the first feed valve, and the second feed valve is connected to a servo motor and controlled to open and close by the servo motor. The front ends of the first feed valve and the second feed valve are connected to a reflux pipe and are provided with a reflux port. The front end of the reflux valve is connected to a pipe and is provided with a feed port. The top of the reflux valve is provided with a discharge port.

[0006] Preferably, the servo motor is fitted with a housing.

[0007] Preferably, the top of the first feed valve and the second feed valve are connected to the first pressure sensor interface and the second pressure sensor interface, respectively, and the first pressure sensor interface and the second pressure sensor interface are connected to the first controller and the second controller, respectively.

[0008] Preferably, a pair of diaphragm valves are provided on the reflux pipe, and the pair of diaphragm valves are distributed on both sides of the first feed valve and the second feed valve.

[0009] The present invention proposes a lithium battery dual reflux servo valve, which has the following advantages: by adding a reflux channel, there are two reflux channels. One reflux channel is used for the first gap, and the other reflux channel is used for the second gap. The opening and closing time of each channel is controlled by a servo motor, thereby achieving different gap sizes. One gap size corresponds to one reflux channel, which makes the control of the entire servo valve simpler and greatly reduces the debugging difficulty. Attached Figure Description

[0010] Figure 1 This is an isometric view of a lithium battery dual reflux servo valve proposed in this utility model;

[0011] Figure 2 This is a top view of a lithium battery dual reflux servo valve proposed in this utility model;

[0012] Figure 3 This is a front view of a lithium battery dual reflux servo valve proposed in this utility model;

[0013] Figure 4 This is a side view of a lithium battery dual reflux servo valve proposed in this utility model;

[0014] Figure 5 AA cross-sectional view of a lithium battery dual reflux servo valve proposed in this utility model;

[0015] In the diagram: 1 return port, 2 feed port, 3 discharge port, 4 diaphragm valve, 5 first pressure sensor interface, 6 second pressure sensor interface, 7 servo motor, 8 housing, 9 valve body, 10 valve core, 11 return valve, 12 first feed valve, 13 second feed valve, 14 first controller, 15 second controller, 16 return pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1A lithium battery dual reflux servo valve includes a reflux valve 11, a first feed valve 12, and a second feed valve 13. Each of the reflux valve 11, the first feed valve 12, and the second feed valve 13 includes a valve body 9, in which a valve core 10 is disposed. The first feed valve 12 and the second feed valve 13 are distributed on both sides of the reflux valve 11 and connected by a pipe. Each of the reflux valve 11, the first feed valve 12, and the second feed valve 13 is connected to a servo motor 7 and controlled to open and close by the servo motor 7. The front ends of the first feed valve 12 and the second feed valve 13 are connected to a reflux pipe 16 and are provided with a reflux port 1. The front end of the reflux valve 11 is connected to a pipe and is provided with a feed port 2. The top of the reflux valve 11 is provided with a discharge port 3, which is connected to the lithium battery coating die head.

[0018] Reference Figure 2 The servo motor 7 is covered by a housing 8, which is used to protect the three servo motors 7.

[0019] Reference Figure 1 , 3 The top of the first feed valve 12 and the second feed valve 13 are connected to the first pressure sensor interface 5 and the second pressure sensor interface 6, respectively. The first pressure sensor interface 5 and the second pressure sensor interface 6 are respectively connected to the first controller 14 and the second controller 15. The first controller 14 and the second controller 15 are used to receive the pressure information of the lithium battery slurry inside the pipeline fed back by the first pressure sensor interface 5 and the second pressure sensor interface 6. According to the set pressure threshold, the first controller 14 and the second controller 15 realize the automatic control of the opening and closing of the first feed valve 12 and the second feed valve 13.

[0020] Reference Figure 4 A pair of diaphragm valves 4 are provided on the return pipe 16. The pair of diaphragm valves 4 are distributed on both sides of the first feed valve 12 and the second feed valve 13. The diaphragm valves 4 are used to manually control the flow rate or opening and closing of the return pipe 16 on both sides of the return port 1.

[0021] Working principle: The lithium battery coating slurry enters the reflux valve 11 through the feed port 2. Compared with the existing single reflux valve, a reflux channel is added to the original servo coating valve during the battery extrusion die coating stage to realize the process of two different gaps in gap coating. Two reflux channels are set on both sides of the reflux valve 11, namely the first feed valve 12 and the second feed valve 13. When the diaphragm valve 4 on the reflux port 1 side is closed, the lithium battery slurry is discharged from the other side. At this time, the servo motor 7 on the same side controls the opening and closing of the valve. The time interval between the opening and closing of the valve is the coating gap size. When the diaphragm valve 4 on the other side is closed, the lithium battery slurry is discharged from the other side. Since the working frequency of the three servo motors 7 is manually set to different frequencies, the frequency of the slurry discharged from the reflux port 1 is different, thereby realizing different gap sizes. Each gap size corresponds to one reflux channel. The opening and closing time of each channel is controlled by a servo motor, thereby realizing different gap sizes, making the control simpler and greatly reducing the difficulty of adjusting the coating gap.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lithium battery double reflux servo valve, comprising a reflux valve (11), a first feed valve (12), a second feed valve (13), characterized in that, The reflux valve (11), the first feed valve (12), and the second feed valve (13) all include a valve body (9), and a valve core (10) is provided in the valve body (9). The first feed valve (12) and the second feed valve (13) are distributed on both sides of the reflux valve (11) and connected by a pipe. The reflux valve (11), the first feed valve (12), and the second feed valve (13) are all connected to a servo motor (7) and controlled to open and close by the servo motor (7). The front end of the first feed valve (12) and the second feed valve (13) are connected through a reflux pipe (16) and a return port (1) is provided. The front end of the reflux valve (11) is connected to a pipe and a feed port (2) is provided. The top of the reflux valve (11) is provided with a discharge port (3).

2. The lithium battery dual return servo valve of claim 1, wherein, The servo motor (7) is covered with a housing (8).

3. The lithium battery dual return servo valve of claim 1, wherein, The top of the first feed valve (12) and the second feed valve (13) are connected to the first pressure sensor interface (5) and the second pressure sensor interface (6), respectively. The first pressure sensor interface (5) and the second pressure sensor interface (6) are connected to the first controller (14) and the second controller (15), respectively.

4. The lithium battery dual return servo valve of claim 1, wherein, A pair of diaphragm valves (4) are provided on the return pipe (16), and the pair of diaphragm valves (4) are distributed on both sides of the first feed valve (12) and the second feed valve (13).

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