Feeding system and coater
By setting different inlet and outlet ports on the top and side walls of the coating die and using a gear pump to drive the slurry circulation, the problem of slurry settling inside the coating die was solved, the coating accuracy and uniformity were improved, and the coating time was shortened.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEICHAI POWER CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-10
Smart Images
Figure CN224475221U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, specifically to a feeding system and a coating machine. Background Technology
[0002] A coating machine presses battery slurry through the slits of a coating die and transfers it onto the foil. The feeding system in a coating machine typically uses an injection pump to deliver slurry from a slurry tank to the coating die. Currently, when coating is required, the slurry is pressed out of the slits of the coating die; when coating is not required, the slurry input from the inlet of the coating die is output through the outlet and flows back into the slurry pipe. In related technologies, both the inlet and outlet of the coating die are located on the top wall of the coating die. This means that the conveying direction of the slurry needs to be adjusted 180° from the inlet to the outlet, creating a flow dead zone. This means the slurry is prone to severe settling during the reversal process, thus affecting the coating accuracy of the coating die. Utility Model Content
[0003] To address the aforementioned technical problems, embodiments of this application provide a feeding system and a coating machine that can improve the problem of severe sedimentation of slurry within the coating die.
[0004] Firstly, a feeding system is provided, comprising:
[0005] The slurry tank is equipped with a first discharge port and a first inlet port;
[0006] A coating die head includes a top wall, a side wall, and a bottom wall, wherein the top wall and the bottom wall are disposed opposite to each other, and the side wall connects the top wall and the bottom wall; wherein the top wall is provided with a second inlet; the side wall is provided with a second outlet, the second outlet communicating with the first inlet; and the bottom wall is provided with a coating port;
[0007] A power unit is used to drive the slurry from the first discharge port to the second inlet port.
[0008] According to a first aspect of this application, the sidewall includes a first wall and a second wall disposed opposite to each other, the first wall and the second wall being connected to the top wall and the bottom wall; wherein, the first wall and the second wall are each provided with a second discharge port.
[0009] According to a first aspect of this application, the feeding system further includes:
[0010] The first pipe section is connected to the second discharge port on the first wall;
[0011] The second pipe section is connected to the second discharge port on the second wall;
[0012] The third pipe section connects the first pipe section, the second pipe section, and the first feed inlet.
[0013] According to a first aspect of this application, the feeding system further includes:
[0014] A first flow valve is installed in the first pipe section;
[0015] The second flow valve is located in the second pipe section.
[0016] According to a first aspect of this application, the power component includes:
[0017] The third inlet is connected to the first outlet.
[0018] The third discharge port is connected to the second feed port.
[0019] According to a first aspect of this application, the slurry tank is provided with a fourth inlet;
[0020] The feeding system also includes:
[0021] The three-way valve includes a first port, a second port, and a third port. The first port is connected to the third discharge port, the second port is connected to the second inlet port, and the third port is connected to the fourth inlet port.
[0022] According to a first aspect of this application, the feeding system further includes:
[0023] A pressure control valve is installed in the pipeline between the second port and the second feed port.
[0024] According to a first aspect of this application, the feeding system further includes:
[0025] A pressure gauge is installed in the pipeline between the first outlet and the third outlet.
[0026] According to a first aspect of this application, the power component includes a gear pump.
[0027] Secondly, a coating machine is also provided, comprising:
[0028] The feeding system as described in the previous embodiment.
[0029] The feeding system and coating machine provided in this application embodiment have a second inlet on the top wall of the coating die and a second outlet on the side wall of the coating die, so that the second inlet and the second outlet are respectively located on different sides of the coating die. During the process of the slurry entering from the second inlet and exiting from the second outlet, the conveying direction does not need to be adjusted by 180° (approximately 90° adjustment is required), avoiding dead zones in the slurry flow. This effectively improves the problem of severe sedimentation that easily occurs when the material changes direction, and enhances the coating accuracy and uniformity of the coating die. Attached Figure Description
[0030] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.
[0031] Figure 1 A schematic diagram of a feeding system provided for related technologies.
[0032] Figure 2 This is a schematic diagram of a feeding system provided for an exemplary embodiment of this application.
[0033] Figure 3 The results of testing the coating thickness of multiple foils after coating the feeding system in the relevant technology.
[0034] Figure 4 The results of the detection of the coating thickness of multiple foils after coating by the feeding system provided in the embodiments of this application.
[0035] Figure 5 The results of the areal density test of multiple foils after coating the feeding system in the related technology.
[0036] Figure 6 The results of the detection of the surface density of multiple foils after coating by the feeding system provided in the embodiments of this application.
[0037] Reference numerals: 100-Feeding system; 110-Slurry tank; 111-First discharge port; 112-First inlet port; 113-Fourth inlet port; 120-Coating die head; 121-Top wall; 122-Side wall; 1221-First wall; 1222-Second wall; 123-Bottom wall; 124-Second inlet port; 125-Second discharge port; 126-Coating port; 130-Power component; 131-Third inlet port; 132-Third discharge port; 140-First pipe section; 150-Second pipe section; 160-Third pipe section; 170-First flow valve; 180-Second flow valve; 190-Three-way valve; 191-First port; 192-Second port; 193-Third port; 210-Pressure control valve; 220-Pressure gauge; 230-Injection pump; 231-Sealing ring. Detailed Implementation
[0038] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.
[0039] The coating machine can press out and transfer battery paste along the gap of the coating die onto the foil. During the operation of the coating machine, the feeding system is the core component responsible for the storage and precise delivery of the paste. Figure 1 A schematic diagram of a feeding system provided for related technologies. For example... Figure 1 As shown, the slurry tank 110 can store the prepared coating slurry. Before coating, the slurry needs to be circulated to remove air bubbles. Specifically, before coating, the slurry in the slurry tank 110 is injected into the injection pump 230 through the three-way valve 190. After the injection pump 230 is full, the injection pump 230 pumps the slurry out, which enters the coating die head 120 through the three-way valve 190 and the pressure control valve 210, and then returns to the slurry tank 110 from the outlet of the coating die head 120, completing the process of slurry circulation and air removal before coating. Figure 1 As shown, since the discharge port and the inlet of the coating die 110 are both located on the top wall of the coating die 120, the conveying direction of the slurry needs to be adjusted by 180° during the process of the slurry entering from the inlet and exiting from the outlet. There is a flow dead zone, that is, the slurry is prone to serious sedimentation during the process of changing direction, which in turn affects the coating accuracy of the coating die 120.
[0040] To address the aforementioned problems, this application provides a feeding system and a coating machine that adjusts the position of the second discharge port on the coating die. Specifically, a second inlet is provided on the top wall of the coating die, and a second discharge port is provided on the side wall of the coating die, so that the second inlet and the second discharge port are located on different sides of the coating die. This way, the conveying direction does not need to be adjusted by 180° during the process of the slurry entering from the second inlet and exiting from the second discharge port, reducing the turning angle of the slurry conveying direction. This makes it less likely for dead zones to form in the slurry flow, improving the severe settling problem that easily occurs when the slurry changes direction, and enhancing the coating accuracy of the coating die.
[0041] Based on the above, combined with Figure 2 This application provides a detailed description of the feeding system and coating machine provided in the embodiments. Figure 2 This is a schematic diagram of a feeding system provided for an exemplary embodiment of this application. Figure 2 As shown, the feeding system 100 provided in this application embodiment may include a slurry tank 110, a coating die head 120, and a power unit 130. The slurry tank 110 is provided with a first discharge port 111 and a first inlet port 112. The coating die head 120 includes a top wall 121, a side wall 122, and a bottom wall 123. The top wall 121 and the bottom wall 123 are arranged opposite to each other. The side wall 122 connects the top wall 121 and the bottom wall 123. The top wall 121 is provided with a second inlet port 124, and the side wall 122 is provided with a second discharge port 125. The second discharge port 125 is connected to the first inlet port 112. The power unit 130 can drive the slurry to be transported from the first discharge port 111 to the second inlet port 124.
[0042] Before the coating operation, the power unit 130 is started, and the slurry is output from the slurry tank 110 through the first discharge port 111, then enters the coating die head 120 through the second inlet port 124, then is output from the coating die head 120 through the second discharge port 125, and then returns to the slurry tank 110 through the first inlet port 112, completing the slurry circulation and discharging the gas in the slurry.
[0043] It should be noted that since the top wall 121 and the side wall 122 are located on different sides of the coating die 120, the second inlet 124 and the second outlet 125 are also located on different sides of the coating die 120. During the process of the slurry entering from the second inlet 124 and exiting from the second outlet 125, the conveying direction does not need to be adjusted by 180° (approximately 90° is required). This reduces the turning angle of the slurry conveying direction, making it less prone to dead zones during flow. This improves the severe settling problem that easily occurs when the slurry changes direction, and enhances the coating accuracy and uniformity of the coating die 120.
[0044] like Figure 2As shown, the bottom wall 123 of the coating die head 120 is provided with a coating port 126. When a coating operation is required, the second discharge port 125 is closed, and the slurry enters the coating die head 120 from the second feed port 124. It can then be output from the coating port 126 and transferred to the foil to achieve the coating operation on the foil.
[0045] like Figure 2 As shown, the sidewall 122 includes a first wall 1221 and a second wall 1222 disposed opposite to each other. Both the first wall 1221 and the second wall 1222 are connected to the top wall 121 and the bottom wall 123. Both the first wall 1221 and the second wall 1222 are provided with the aforementioned second discharge port 125. In this way, the slurry in the coating die head 120 can flow back to the slurry tank 110 through the second discharge port 125 of the first wall 1221 and the second discharge port 125 of the second wall 1222, which can improve the efficiency of slurry output from the coating die head 120. In addition, since the second discharge port 125 on the first wall 1221 and the second discharge port 1222 on the second wall 1222 can output slurry, the problem of slurry clogging inside the coating die head 120 can be effectively alleviated.
[0046] In one embodiment, the second discharge port 125 on the first wall 1221 and the second discharge port 125 on the second wall 1222 are located at the same height, that is, the central axis of the second discharge port 125 on the first wall 1221 and the bottom wall 123 are aligned in the height direction of the coating die head 120 (reference). Figure 2 The distance along the Z-axis of the second wall 1222 is equal to the distance between the central axis of the second outlet 125 on the second wall 1222 and the bottom wall 123 in the height direction of the coating die head 120 (reference). Figure 2 The distance along the Z-axis (in the image). This avoids pressure unevenness caused by liquid level differences, and makes the slurry output from the two second outlets 125 more uniform in flow and more stable in pressure.
[0047] In one embodiment, the second outlet 125 of the first wall 1221 and the second outlet 125 of the second wall 1222 are symmetrically arranged about the second inlet 124. In this way, the slurry injected from the second inlet 124 can flow evenly to the second outlet 125 on the first wall 1221 and the second outlet 125 on the second wall 1222 during the diffusion process in the coating die head 120, avoiding local eddies caused by a large amount of material discharged from one side.
[0048] like Figure 2As shown, the feeding system 100 may further include a first pipe section 140, a second pipe section 150 and a third pipe section 160. The first pipe section 140 is connected to the second discharge port 125 on the first wall 1221, the second pipe section 150 is connected to the second discharge port 125 on the second wall 1222, and the third pipe section 160 is connected to the first pipe section 140, the second pipe section 150 and the first feed port 112.
[0049] In practical applications, the slurry is output from the second outlet 125 on the first wall 1221 to the first pipe section 140, and from the second outlet 125 on the second wall 1222 to the second pipe section 150. It then gathers in the third pipe section 160 and is transported through the third pipe section 160 to the first inlet 112, returning to the slurry tank 110.
[0050] It should be understood that, compared to the scheme in which the first pipe section 140 and the second pipe section 150 are each connected to the first feed port 112 separately, the first pipe section 140 and the second pipe section 150 are connected to the first feed port 112 through a shared third pipe section 160, which can save material usage and reduce production costs.
[0051] like Figure 2 As shown, the feeding system 100 may also include a first flow valve 170 and a second flow valve 180, with the first flow valve 170 located in the first pipe section 140 and the second flow valve 180 located in the second pipe section 150.
[0052] It should be noted that the first flow valve 170 can adjust the flow rate of the slurry in the first pipe section 140, and the second flow valve 180 can adjust the flow rate of the slurry in the second pipe section 150. In practical applications, when the slurry is output through the second outlet 125 on the first wall 1221 and the second outlet 125 on the second wall 1222, the first flow valve 170 and the second flow valve 180 can be adjusted to make the flow rate of the slurry in the first pipe section 140 equal to the flow rate of the slurry in the second pipe section 150. This can prevent the difference in flow rate between the first pipe section 140 and the second pipe section 150 from causing different degrees of blockage in the internal circuit of the coating die 120 in the corresponding areas of the first wall 1221 and the second wall 1222, and can improve the problem of uneven coating thickness of the coating die 120 in the corresponding areas of the first wall 1221 and the second wall 1222 during subsequent coating operations.
[0053] In one embodiment, the first flow valve 170 can display the current flow value in the first pipe section 140, and the second flow valve 180 can display the current flow value in the second pipe section 150. The operator can adjust the flow values in the first pipe section 140 and the second pipe section 150 in real time according to the values displayed by the first flow valve 170 and the second flow valve 180, so that the flow values in the first pipe section 140 and the second pipe section 150 always remain equal.
[0054] like Figure 1 As shown, in related technologies, the injection pump 230 is filled with slurry before the coating operation. During the coating operation, the injection pump 230 outputs the slurry, which enters the coating die 120. The coating die 120 applies pressure to the slurry, which is then coated onto the foil surface through the coating port 126. Because the injection pump 230 has a limited volume, the coating operation needs to be paused after the slurry in the injection pump 230 has been injected, and then the injection pump 230 must draw slurry from the slurry tank 110 again. Therefore, the related technology using the injection pump 230 to drive slurry circulation has the following problems:
[0055] First, the injection pump 230 includes a plunger and a sleeve. The relative movement between the plunger and the sleeve draws in or outputs slurry. The relative movement between the plunger and the sleeve will cause wear. Long-term operation will lead to volume changes and uneven pressure, which in turn will cause unstable pressure in the entire pipeline and poor coating uniformity.
[0056] Secondly, the syringe pump 230 needs to preserve the injected slurry, which usually requires a sealing ring 231 to prevent slurry leakage. However, the sealing ring 231 has poor compatibility with the slurry (organic reagent), which can easily lead to problems such as swelling and corrosion of the sealing ring 231.
[0057] Third, during the coating operation, the injection pump 230 needs to periodically draw material from the slurry tank 110, which requires temporarily suspending the coating operation, resulting in an extension of the overall coating operation time.
[0058] Fourth, during the coating operation, the injection pump 230 needs to periodically draw material from the slurry tank 110, which requires temporarily pausing the coating operation. While waiting for the slurry to be drawn, the slurry remaining in the pipe and coating die 120 is prone to settling, affecting the coating accuracy and the stability of the coating operation.
[0059] like Figure 2 As shown, the power unit 130 may include a third feed port 131 and a third discharge port 132. The third feed port 131 is connected to the first discharge port 111, and the third discharge port 132 is connected to the second feed port 124.
[0060] It should be understood that after the power unit 130 is started, the slurry in the slurry tank 110 is output from the first outlet 111, passes through the third inlet 131 and the third outlet 132, and then enters the coating die head 120 from the second inlet 124. Since the third inlet 131 and the third outlet 132 of the power unit 130 are two different inlets (in related technologies, the inlet and outlet of the injection pump 230 are the same inlet), the power unit 130 can have the following beneficial effects:
[0061] First, the power unit 130 does not need to store the slurry. After being fed in through the third inlet 131, it can be directly discharged through the third outlet 132. Therefore, the power unit 130 does not need to use the sealing ring 231 to seal the internal cavity, and there will be no problems such as poor compatibility between the sealing ring 231 and the slurry (organic reagent), or swelling and corrosion of the sealing ring 231.
[0062] Secondly, during the coating operation, the power unit 130 can continuously drive the slurry circulation, avoiding temporary suspension of the coating operation due to periodic material extraction from the slurry tank 110, which can effectively shorten the overall coating operation time.
[0063] Third, during the coating operation, the power unit 130 can continuously drive the slurry circulation, avoiding temporary interruptions to the coating operation due to periodic material extraction from the slurry tank 110. Therefore, the slurry in the pipe and coating die 120 is less likely to settle, which can improve the coating accuracy and the stability of the coating operation.
[0064] In one embodiment, the power unit 130 may include a gear pump. In addition to the aforementioned advantages, compared to the injection pump 230, the gear pump drives the slurry movement through gear rotation, eliminating the need for relative movement between the plunger and sleeve. This avoids the problems of wear between the plunger and sleeve in the injection pump 230, which leads to changes in working volume and uneven pressure over time, resulting in unstable pressure throughout the pipeline and poor coating uniformity. Furthermore, the gear pump's output pressure is adjustable, allowing for more precise control of the slurry flow rate.
[0065] like Figure 2 As shown, the slurry tank 110 is provided with a fourth feed port 113. Correspondingly, the feeding system 100 may also include a three-way valve 190. The three-way valve 190 includes a first port 191, a second port 192 and a third port 193. The first port 191 is connected to the third discharge port 132, the second port 192 is connected to the second feed port 124, and the third port 193 is connected to the fourth feed port 113.
[0066] In practical applications, the slurry is circulated and defoamed before coating. During this process, the first port 191 and the second port 192 of the three-way valve 190 are connected, the first port 191 is disconnected from the third port 193, and the second outlet 125 of the coating die head 120 is opened. After the drive unit is started, the slurry is output from the first outlet 111, passes through the third inlet 131, the third outlet 132, the first port 191, the second port 192, the second inlet 124, the second outlet 125, and the first inlet 112 before returning to the slurry tank 110.
[0067] In practical applications, during the coating process, the first port 191 and the second port 192 of the three-way valve 190 are connected, the first port 191 and the third port 193 are disconnected, and the second outlet 125 of the coating die head 120 is closed. After the drive unit is started, the slurry is output from the first outlet 111, passes through the third inlet 131, the third outlet 132, the first port 191, the second port 192, and the second inlet 124, and enters the coating die head 120. The slurry is output from the coating port 126 of the coating die head 120 and coated on the surface of the foil.
[0068] In practical applications, during the coating process, if a temporary pause in the coating operation is required (e.g., when replacing an electrode), the slurry needs to remain in a flowing state during the pause to prevent sedimentation. Therefore, during the pause, the first port 191 of the three-way valve 190 is disconnected from the second port 192, and the first port 191 is connected to the third port 193. The slurry is output from the first outlet 111, passes through the third inlet 131, the third outlet 132, the first port 191, the third port 193, and the fourth inlet 113, returning to the slurry tank 110. When the coating operation resumes, the first port 191 of the three-way valve 190 is connected to the second port 192, and the first port 191 is disconnected from the third port 193.
[0069] like Figure 2 As shown, the feeding system 100 may also include a pressure control valve 210, which is located in the pipeline between the second port 192 and the second feed port 124.
[0070] It should be understood that the pressure control valve 210 can adjust the pressure of the slurry before it enters the coating die 120, ensuring that the slurry is delivered evenly to the inside of the coating die 120 at a constant pressure, thereby improving the stability of the slurry entering the coating die 120 and preventing the internal structure of the coating die 120 from being impacted by the high-pressure slurry.
[0071] like Figure 2 As shown, the feeding system 100 may also include a pressure gauge 220, which is installed in the pipeline between the first outlet 191 and the third outlet 132. The pressure gauge 220 can be used to monitor the pressure value of the slurry output by the power unit 130 in real time, helping operators to determine the current operating status of the feeding system 100. For example, operators can use the pressure value monitored by the pressure gauge 220 to determine whether there are abnormalities such as pipeline blockage or power unit 130 malfunction.
[0072] The coating machine provided in this application embodiment may include the feeding system 100 as described in the previous embodiment, and has all the functions of the feeding system 100. The beneficial effects of the coating machine provided in this application embodiment can be referred to the beneficial effects of the aforementioned feeding system 100.
[0073] In one embodiment, the coating machine may further include a conveying system, a cooling system, a cleaning system, etc. The conveying system can be used to convey the foil, ensuring that the foil passes under the coating die 120 at a constant speed. The cooling system can be used to cool the coated foil and the coating die 120. The cleaning system can clean the coating die 120, the transmission system, etc., to remove residual slurry.
[0074] The embodiments of this application will be further described below in conjunction with the test results.
[0075] Figure 3 The results of testing the coating thickness of multiple foils after coating the feeding system in the related technology. Figure 4 The results of the detection of the coating thickness of multiple foils after coating by the feeding system provided in the embodiments of this application. Figure 3 and Figure 4 The test results shown are all obtained after coating with a designed thickness of 120μm.
[0076] like Figure 3 As shown, after coating multiple foils using the feeding system 100 in the related technology, the average coating thickness of the multiple foils is 116 μm, and the range is 22 μm.
[0077] like Figure 4 As shown, after coating multiple foils using the feeding system 100 provided in this application embodiment, the average coating thickness of the multiple foils is 119 μm, and the range is 6 μm.
[0078] Combination Figure 3 and Figure 4 As shown, it can be inferred that after coating multiple foils using the feeding system in related technologies, the coating thickness of each foil is uneven from side to side, and the average coating thickness of multiple foils differs significantly from the designed thickness, resulting in a large range. However, after coating the foils using the feeding system 100 provided in this application embodiment, the uniformity of the coating thickness of each foil is significantly improved, and the average coating thickness of multiple foils differs less from the designed thickness, is closer to the designed thickness, the range is reduced, and the thickness consistency is effectively improved.
[0079] Figure 5 The results of the detection of the areal density of multiple foils after coating the feeding system in the related technology. Figure 6 The results of the detection of the surface density of multiple foils after coating by the feeding system provided in the embodiments of this application. Figure 5 and Figure 6 The test results shown are all based on a designed areal density of 11.75 mg / cm³. 2The areal density is obtained after coating. It can be understood as the mass of solid material (or active material) per unit area of foil.
[0080] After coating multiple foils using a feeding system in related technologies, the actual areal density of the multiple foils is as follows: Figure 5 As shown. After coating multiple foils using the feeding system 100 provided in this embodiment, the actual areal density of the multiple foils is as follows. Figure 6 As shown.
[0081] Combination Figure 5 and Figure 6 As shown, after coating multiple foils using a feeding system from related technologies, the areal density distribution of the multiple foils is relatively wide (11.19-12.20 mg / cm³). 2 There are several outliers exceeding the ±1.5% tolerance range. After coating multiple foils using the feeding system 100 provided in this embodiment, the areal density of the multiple foils is concentrated between 11.60-11.85 mg / cm³. 2 Within the specified range, it fully meets the accuracy requirement of ±1.5%, significantly improving the stability and consistency of the coating process.
[0082] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.
[0083] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.
[0084] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.
[0085] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0086] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.
Claims
1. A feeding system, characterized in that, include: The slurry tank is equipped with a first discharge port and a first inlet port; A coating die head includes a top wall, a side wall, and a bottom wall, wherein the top wall and the bottom wall are disposed opposite to each other, and the side wall connects the top wall and the bottom wall; wherein the top wall is provided with a second inlet; the side wall is provided with a second outlet, the second outlet communicating with the first inlet; and the bottom wall is provided with a coating port; A power unit is used to drive the slurry from the first discharge port to the second inlet port.
2. The feeding system according to claim 1, characterized in that, The sidewall includes a first wall and a second wall disposed opposite to each other, and the first wall and the second wall are both connected to the top wall and the bottom wall; wherein, the first wall and the second wall are both provided with the second discharge port.
3. The feeding system according to claim 2, characterized in that, The feeding system also includes: The first pipe section is connected to the second discharge port on the first wall; The second pipe section is connected to the second discharge port on the second wall; The third pipe section connects the first pipe section, the second pipe section, and the first feed inlet.
4. The feeding system according to claim 3, characterized in that, The feeding system also includes: A first flow valve is installed in the first pipe section; The second flow valve is located in the second pipe section.
5. The feeding system according to any one of claims 1 to 4, characterized in that, The power component includes: The third inlet is connected to the first outlet. The third discharge port is connected to the second feed port.
6. The feeding system according to claim 5, characterized in that, The slurry tank is equipped with a fourth inlet; The feeding system also includes: The three-way valve includes a first port, a second port, and a third port. The first port is connected to the third discharge port, the second port is connected to the second inlet port, and the third port is connected to the fourth inlet port.
7. The feeding system according to claim 6, characterized in that, The feeding system also includes: A pressure control valve is installed in the pipeline between the second port and the second feed port.
8. The feeding system according to claim 6, characterized in that, The feeding system also includes: A pressure gauge is installed in the pipeline between the first outlet and the third outlet.
9. The feeding system according to claim 5, characterized in that, The power component includes a gear pump.
10. A coating machine, characterized in that, include: The feeding system as described in any one of claims 1 to 9.