A continuous impurity removal system for lithium-ion battery slurry

Abstract

The present invention discloses a continuous impurity removal system for lithium-ion battery slurry, which relates to the technical field of lithium-ion battery preparation. The continuous impurity removal system for lithium-ion battery slurry includes a first filtration system. The first filtration system includes a first circulating filter belt, a first driving member, a first filtration device, a first impurity suction device, a first spraying and washing device, and a first drying device. The first circulating filter belt sequentially passes through the first filtration device, the first impurity suction device, the first spraying and washing device, and the first drying device. The first driving member is connected to the first circulating filter belt and is used to drive the first circulating filter belt to circulate and rotate in the direction of sequentially passing through the first filtration device, the first impurity suction device, the first spraying and washing device, the first drying device, and then back to the first filtration device. The first filtration device is used to filter the lithium-ion battery slurry through the first circulating filter belt. The continuous impurity removal system for lithium-ion battery slurry provided by the present invention realizes the continuous impurity removal of the lithium-ion battery slurry and self-cleaning during the continuous impurity removal process.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium-ion battery preparation, and more particularly to a continuous impurity removal system for lithium-ion battery slurry. Background Art

[0002] In the existing impurity removal system for lithium-ion battery slurry, a filter screen is fixedly arranged in a machine body, and the lithium-ion battery slurry is filtered by passing the lithium-ion battery slurry through the filter screen.

[0003] However, as time goes by, a large amount of large-particle impurities will accumulate on the filter screen, and the filter screen needs to be frequently removed and cleaned to ensure the filtering effect. During the process of removing the filter screen for cleaning, the impurity removal system is in a shutdown state. After the filter screen is cleaned and dried and reinstalled on the machine body, the impurity removal system can run again, which seriously affects the impurity removal efficiency of the impurity removal system and thus affects the preparation efficiency of lithium-ion batteries. Moreover, the process of frequently disassembling and assembling the filter screen and cleaning and drying the filter screen requires a large amount of labor costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a continuous impurity removal system for lithium-ion battery slurry, which can achieve continuous impurity removal of lithium-ion battery slurry and can self-clean to reduce labor costs.

[0005] The present invention provides a technical solution:

[0006] A continuous impurity removal system for lithium-ion battery slurry includes a first filtration system. The first filtration system includes a first circulating filter belt, a first driving member, a first filtering device, a first impurity suction device, a first spraying and washing device, and a first drying device. The first circulating filter belt sequentially passes through the first filtering device, the first impurity suction device, the first spraying and washing device, and the first drying device. The first driving member is connected to the first circulating filter belt and is used to drive the first circulating filter belt to circulate and rotate in the direction of sequentially passing through the first filtering device, the first impurity suction device, the first spraying and washing device, the first drying device, and then back to the first filtering device. The first filtering device is used to filter the lithium-ion battery slurry through the first circulating filter belt.

[0007] Further, a first feed port is arranged at a position corresponding to the upper side of the first circulating filter belt of the first filtering device, and a first discharge port is arranged at a position corresponding to the lower side of the first circulating filter belt of the first filtering device.

[0008] Further, the first impurity suction device is used to suck large-particle impurities on the first circulating filter belt, the first spraying and washing device is used to wash the first circulating filter belt, and the first drying device is used to dry the first circulating filter belt.

[0009] Further, it further includes a second filtration system. The second filtration system includes a second circulating filter belt, a second driving member, a second filtering device, a second impurity suction device, a second spraying and washing device, and a second drying device. The second circulating filter belt sequentially passes through the second filtering device, the second impurity suction device, the second spraying and washing device, and the second drying device. The second driving member is connected to the second circulating filter belt and is used to drive the second circulating filter belt to circulate and rotate in the direction of sequentially passing through the second filtering device, the second impurity suction device, the second spraying and washing device, the second drying device, and back to the second filtering device. The second filtering device is communicated with the first filtering device and is used to filter the lithium-ion battery slurry through the second circulating filter belt.

[0010] Further, the second filtering device is provided with a second feed port at a position corresponding to the upper side of the second circulating filter belt, and a second discharge port at a position corresponding to the lower side of the second circulating filter belt.

[0011] Further, the second impurity suction device is used to suck large particle impurities on the second circulating filter belt, the second spraying and washing device is used to wash the second circulating filter belt, and the second drying device is used to dry the second circulating filter belt.

[0012] Further, it further includes a iron removal system. The iron removal system includes a circulating iron removal belt, a third driving member, an adsorption device, a third spraying and washing device, and a third drying device. The circulating iron removal belt sequentially passes through the adsorption device, the third spraying and washing device, and the third drying device. The third driving member is connected to the circulating iron removal belt and is used to drive the circulating iron removal belt to circulate and rotate in the direction of sequentially passing through the adsorption device, the third spraying and washing device, the third drying device, and back to the adsorption device. The adsorption device is communicated with the first filtering device, and the adsorption device is used to adsorb iron substances in the lithium-ion battery slurry through the circulating iron removal belt.

[0013] Further, the adsorption device is provided with a third feed port at a position corresponding to the upper side of the circulating iron removal belt, and a third discharge port at a position corresponding to the lower side of the circulating iron removal belt.

[0014] Further, the circulating iron removal belt is used to adsorb iron substances in the lithium-ion battery slurry, the third spraying and washing device is used to wash the circulating iron removal belt, and the third drying device is used to dry the circulating iron removal belt.

[0015] Further, it further includes a slurry pump and a coating head. The feed end of the slurry pump is communicated with the adsorption device through a pipeline, and the discharge end of the slurry pump is communicated with the coating head through a pipeline.

[0016] Compared with the prior art, in the impurity removal system for lithium-ion battery slurry provided by the present invention, in the first filtration system, the first circulating filter belt is driven by the first driving member to circulate and rotate in the direction passing through the first filtration device, the first impurity suction device, the first spraying and washing device, the first drying device, and then back to the first filtration device in sequence. In practical applications, after the previous position of the first circulating filter belt passes through the first filtration device to filter the lithium-ion battery slurry, it immediately leaves the first filtration position, and the subsequent continuous position on the first circulating filter belt enters the first filtration device to filter the lithium-ion battery slurry. After the previous position then passes through the first impurity suction device, the first spraying and washing device, and the first drying device to complete cleaning, it enters the first filtration device again for filtration. Multiple consecutive positions on the first circulating filter belt cycle in this way to complete the continuous filtration and impurity removal of the lithium-ion battery slurry and self-cleaning during the cyclic impurity removal process. Therefore, the beneficial effects of the continuous impurity removal system for lithium-ion battery slurry provided by the present invention include: achieving continuous impurity removal of the lithium-ion battery slurry, improving the preparation efficiency of lithium-ion batteries, and realizing self-cleaning during the continuous impurity removal process, significantly reducing the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the continuous impurity removal system for lithium-ion battery slurry provided by the embodiments of the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram of the first filtration system in the first perspective;

[0020] Figure 3 is Figure 1 a schematic structural diagram of the second filtration system in the first perspective;

[0021] Figure 4 is Figure 1 a schematic structural diagram of the iron removal system in the first perspective.

[0022] Icons: 100 - Continuous impurity removal system for lithium-ion battery slurry; 110 - First filtration system; 111 - First circulating filter belt; 112 - First driving member; 113 - First filtration device; 1131 - First feed inlet; 1133 - First discharge outlet; 114 - First impurity suction device; 115 - First spray washing device; 116 - First drying device; 130 - Second filtration system; 131 - Second circulating filter belt; 132 - Second driving member; 133 - Second filtration device; 1331 - Second feed inlet; 1333 - Second discharge outlet; 134 - Second impurity suction device; 135 - Second spray washing device; 136 - Second drying device; 150 - Iron removal system; 151 - Circulating iron removal belt; 152 - Third driving member; 153 - Adsorption device; 1531 - Third feed inlet; 1533 - Third discharge outlet; 154 - Third spray washing device; 155 - Third drying device; 170 - Slurry pump; 190 - Coating head. Detailed implementation mode

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships in which the inventive product is usually placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0027] In addition, terms such as "first" and "second" are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, terms such as "arrangement" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0030] Embodiment

[0031] Please refer to Figure 1 As shown, the continuous impurity removal system 100 for lithium-ion battery slurry provided in this embodiment is used to remove impurities from the lithium-ion battery slurry during the preparation of lithium-ion batteries. The continuous impurity removal system 100 for lithium-ion battery slurry realizes continuous impurity removal of the lithium-ion battery slurry, improves the preparation efficiency of lithium-ion batteries, and realizes self-cleaning during the continuous impurity removal process, greatly reducing the labor cost.

[0032] The continuous impurity removal system 100 for lithium-ion battery slurry provided in this embodiment includes a first filtration system 110, a second filtration system 130, an iron removal system 150, a slurry pump 170, and a coating head 190. The discharge end of the second filtration system 130 is connected to the feed end of the first filtration system 110, and the discharge end of the first filtration system 110 is connected to the feed end of the iron removal system 150. In practical applications, after the second filtration system 130 and the first filtration system 110 sequentially complete two filtrations of the lithium-ion battery slurry, the iron removal system 150 completes the iron removal of the lithium-ion battery slurry.

[0033] It can be understood that in other embodiments, the continuous impurity removal system 100 for lithium-ion battery slurry may further include more filtration subsystems such as a third filtration system and a fourth filtration system to achieve more filtrations of the lithium-ion battery slurry. Similarly, the continuous impurity removal system 100 for lithium-ion battery slurry may further include more iron removal subsystems such as a second iron removal system 150 and a third iron removal system 150 to achieve more iron removals of the lithium-ion battery slurry. The specific number of filtration subsystems and iron removal subsystems is adaptively adjusted according to actual application conditions. In this embodiment, the second filtration system 130 completes the primary filtration of the lithium-ion battery slurry, and the first filtration system 110 completes the fine filtration of the lithium-ion battery slurry.

[0034] Please combine Figure 1 andFigure 2 As shown in Figure 2 , the first filtration system 110 includes a first circulating filter belt 111, a first driving member 112, a first filtration device 113, a first impurity suction device 114, a first spraying and washing device 115, and a first drying device 116. The first circulating filter belt 111 sequentially passes through the first filtration device 113, the first impurity suction device 114, the first spraying and washing device 115, and the first drying device 116. The first driving member 112 is connected to the first circulating filter belt 111 and is used to drive the first circulating filter belt 111 to circulate and rotate in the direction of sequentially passing through the first filtration device 113, the first impurity suction device 114, the first spraying and washing device 115, the first drying device 116, and then back to the first filtration device 113.

[0035] The first filtration device 113 is provided with a first feed inlet 1131 at a position corresponding to the upper side of the first circulating filter belt 111, and a first discharge outlet 1133 at a position corresponding to the lower side of the first circulating filter belt 111. The first feed inlet 1131 is communicated with the discharge end of the second filtration system 130. The lithium-ion battery slurry after primary filtration by the second filtration system 130 enters the first filtration device 113 through the first feed inlet 1131. Then, the lithium-ion battery slurry passes through the first circulating filter belt 111 under the action of gravity for fine filtration. The lithium-ion battery slurry after passing through the first circulating filter belt 111 reaches the first discharge outlet 1133, and the first discharge outlet 1133 is connected to the feed end of the iron removal system 150.

[0036] It can be understood that the first impurity suction device 114 is used to suck large-particle impurities on the first circulating filter belt 111 to achieve preliminary cleaning of the first circulating filter belt 111. The first spraying and washing device 115 is provided with a spraying component for flushing the first circulating filter belt 111 that has been preliminarily cleaned. The first drying device 116 is provided with a heating component for drying the first circulating filter belt 111 after flushing.

[0037] In this embodiment, the first driving member 112 is a motor, and the number is two. The rotating shafts of the two motors respectively abut against both ends of the first circulating filter belt 111 to make the first circulating filter belt 111 taut. When the first driving member 112 works, it drives the first circulating filter belt 111 to circulate and rotate in the direction of sequentially passing through the first filtration device 113, the first impurity suction device 114, the first spraying and washing device 115, the first drying device 116, and then back to the first filtration device 113. During the circulating rotation of the first circulating filter belt 111, continuous filtration of the lithium-ion battery slurry is achieved at the first filtration device 113, preliminary cleaning of itself is achieved at the first impurity suction device 114, flushing of itself is achieved at the first spraying and washing device 115, and drying of itself is achieved at the first drying device 116. The first circulating filter belt 111 enters the first filtration device 113 again in a clean and dry area and enters the next cycle.

[0038] It can be seen that the previous position of the first circulating filter belt 111 leaves the first filtering position immediately after the first filtering device 113 filters the lithium-ion battery slurry. The subsequent continuous next position on the first circulating filter belt 111 enters the first filtering device 113 to filter the lithium-ion battery slurry. After the previous position sequentially passes through the first impurity suction device 114, the first spray cleaning device 115, and the first drying device 116 to complete cleaning, it enters the first filtering device 113 again for filtering. Multiple consecutive positions on the first circulating filter belt 111 cycle in this way to complete the continuous filtering and impurity removal of the lithium-ion battery slurry and the self-cleaning during the cyclic impurity removal process. Therefore, the continuous impurity removal system 100 for lithium-ion battery slurry provided by the present invention realizes the continuous impurity removal of the lithium-ion battery slurry, improves the preparation efficiency of lithium-ion batteries, and realizes self-cleaning during the continuous impurity removal process, greatly reducing the labor cost.

[0039] Please refer to Figure 1 and Figure 3 As shown, the second filtering system 130 includes a second circulating filter belt 131, a second driving member 132, a second filtering device 133, a second impurity suction device 134, a second spray cleaning device 135, and a second drying device 136. The second circulating filter belt 131 sequentially passes through the second filtering device 133, the second impurity suction device 134, the second spray cleaning device 135, and the second drying device 136. The second driving member 132 is connected to the second circulating filter belt 131 and is used to drive the second circulating filter belt 131 to circulate and rotate in the direction of sequentially passing through the second filtering device 133, the second impurity suction device 134, the second spray cleaning device 135, the second drying device 136, and then back to the second filtering device 133.

[0040] The second filtering device 133 is provided with a second feed inlet 1331 at a position corresponding to the upper side of the second circulating filter belt 131, and a second discharge outlet 1333 at a position corresponding to the lower side of the second circulating filter belt 131. The second feed inlet 1331 is used to input the lithium-ion battery slurry. After the lithium-ion battery slurry passes through the second filtering device 133 from the first feed inlet 1131, it passes through the second circulating filter belt 131 under the action of gravity for primary filtration. The lithium-ion battery slurry after primary filtration reaches the second discharge outlet 1333, and then enters the first filtering device 113 of the first filtering system 110 through the first feed inlet 1131 for fine filtration. It can be understood that both the second circulating filter belt 131 and the first circulating filter belt 111 are strip-shaped filter mesh structures, and the mesh gap of the second circulating filter belt 131 is larger than that of the first circulating filter belt 111.

[0041] It can be understood that the second impurity suction device 134 is used to suck large particle impurities on the second circulating filter belt 131 to achieve preliminary cleaning of the second circulating filter belt 131. The second spraying device 135 is provided with a spraying assembly for flushing the second circulating filter belt 131 that has undergone preliminary cleaning. The second drying device 136 is provided with a heating assembly for drying the second circulating filter belt 131 after flushing.

[0042] In this embodiment, the second driving member 132 is also a motor, and the number is two. The rotating shafts of the two motors respectively abut against both ends of the second circulating filter belt 131 to keep the second circulating filter belt 131 taut. When the second driving member 132 operates, it drives the second circulating filter belt 131 to circulate and rotate in the direction of passing through the second filtering device 133, the second impurity suction device 134, the second spraying device 135, the second drying device 136, and then back to the second filtering device 133 in sequence. During the circulating rotation of the second circulating filter belt 131, continuous filtration of the lithium-ion battery slurry is achieved at the second filtering device 133, preliminary cleaning of itself is achieved at the second impurity suction device 134, flushing of itself is achieved at the second spraying device 135, and drying of itself is achieved at the second drying device 136. The second circulating filter belt 131 re-enters the second filtering device 133 in a clean and dry area and enters the next cycle.

[0043] Please refer to Figure 1 and Figure 4 As shown in the figure, the iron removal system 150 includes a circulating iron removal belt 151, a third driving member 152, an adsorption device 153, a third spraying device 154, and a third drying device 155. The circulating iron removal belt 151 sequentially passes through the adsorption device 153, the third spraying device 154, and the third drying device 155. The third driving member 152 is used to drive the circulating iron removal belt 151 to circulate and rotate in the direction of passing through the adsorption device 153, the third spraying device 154, the third drying device 155, and then back to the adsorption device 153 in sequence.

[0044] It can be understood that the circulating iron removal belt 151 has magnetism and can adsorb iron substances in the lithium-ion battery slurry.

[0045] The adsorption device 153 is provided with a third feed port 1531 at a position corresponding to the upper side of the circulating iron removal belt 151 and a third discharge port 1533 at a position corresponding to the lower side of the circulating iron removal belt 151. The third feed port 1531 and the third discharge port 1533 are arranged in a staggered manner, and the direction from the third feed port 1531 to the third discharge port 1533 is the same as the rotation direction of the circulating iron removal belt 151. The purpose of this design is to increase the contact time between the lithium-ion battery slurry and the circulating iron removal belt 151 and increase the contact area of the circulating iron removal belt 151, thereby improving the iron removal effect.

[0046] The third feed inlet 1531 is communicated with the first discharge outlet 1133. After the lithium-ion battery slurry that has been finely filtered in the first filtering device 113 enters the adsorption device 153 through the third feed inlet 1531, it reaches the circulating iron removal belt 151 under the action of gravity and moves along with the circulating iron removal belt 151 towards the third discharge outlet 1533. When the lithium-ion battery slurry reaches the third discharge outlet 1533, it leaves the adsorption device 153 from the third discharge outlet 1533 under the action of gravity, completing the iron removal process.

[0047] It can be understood that the third spray washing device 154 is used to wash the circulating iron removal belt 151, and the third drying device 155 is used to dry the washed circulating iron removal belt 151.

[0048] The feed end of the slurry pump 170 is connected to the third discharge outlet 1533 of the adsorption device 153 through a pipeline, and the discharge end of the slurry pump 170 is connected to the feed end of the coating head 190 through a pipeline. The lithium-ion battery slurry that has completed iron removal in the adsorption device 153 moves to the coating head 190 under the pumping action of the slurry pump 170 for subsequent pole piece coating process.

[0049] In summary, for the lithium-ion battery slurry continuous impurity removal system 100 provided in this embodiment, in practical applications, after the lithium-ion battery slurry is initially filtered in the second filtering system 130, it is finely filtered in the first filtering system 110, and finally iron is removed in the iron removal system 150. The first filtering system 110 drives the first circulating filter belt 111 to continuously rotate in a cycle through the first driving member 112, realizing continuous filtration and self-cleaning of the lithium-ion battery slurry; the second filtering system 130 drives the second circulating filter belt 131 to continuously rotate in a cycle through the second driving member 132, realizing continuous filtration and self-cleaning of the lithium-ion battery slurry; the iron removal system 150 drives the circulating iron removal belt 151 to continuously rotate in a cycle through the third driving member 152, realizing continuous iron removal and self-cleaning of the lithium-ion battery slurry. During the entire impurity removal process, the lithium-ion battery slurry continuous impurity removal system 100 operates continuously without stopping, and the filtration and iron removal processes do not pause.

[0050] Therefore, the lithium-ion battery slurry continuous impurity removal system 100 provided in this embodiment realizes continuous impurity removal of the lithium-ion battery slurry, improves the preparation efficiency of the lithium-ion battery, and realizes self-cleaning during the continuous impurity removal process, greatly reducing the labor cost.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous impurity removal system for lithium-ion battery slurry, characterized in that, It includes a first filtration system, and the first filtration system includes a first circulating filter belt, a first driving member, a first filtration device, a first impurity suction device, a first spraying and washing device, and a first drying device. The first circulating filter belt sequentially passes through the first filtration device, the first impurity suction device, the first spraying and washing device, and the first drying device. The first driving member is connected to the first circulating filter belt and is used to drive the first circulating filter belt to circulate and rotate in the direction of sequentially passing through the first filtration device, the first impurity suction device, the first spraying and washing device, the first drying device, and then back to the first filtration device. A first feed inlet is arranged at a position above the first circulating filter belt corresponding to the first filtration device, and a first discharge outlet is arranged at a position below the first circulating filter belt corresponding to the first filtration device. The first filtration device is used to filter the lithium-ion battery slurry through the first circulating filter belt. It further includes an iron removal system, and the iron removal system includes a circulating iron removal belt, a third driving member, an adsorption device, a third spraying and washing device, and a third drying device. The circulating iron removal belt sequentially passes through the adsorption device, the third spraying and washing device, and the third drying device. The third driving member is connected to the circulating iron removal belt and is used to drive the circulating iron removal belt to circulate and rotate in the direction of sequentially passing through the adsorption device, the third spraying and washing device, the third drying device, and then back to the adsorption device. The adsorption device is communicated with the first filtration device, and the adsorption device is used to adsorb the iron substances in the lithium-ion battery slurry through the circulating iron removal belt.

2. The continuous impurity removal system for lithium-ion battery slurry according to claim 1, characterized in that, The first impurity suction device is used to suck the large-particle impurities on the first circulating filter belt, the first spraying and washing device is used to wash the first circulating filter belt, and the first drying device is used to dry the first circulating filter belt.

3. The continuous impurity removal system for lithium-ion battery slurry according to claim 1, characterized in that, It further includes a second filtration system, and the second filtration system includes a second circulating filter belt, a second driving member, a second filtration device, a second impurity suction device, a second spraying and washing device, and a second drying device. The second circulating filter belt sequentially passes through the second filtration device, the second impurity suction device, the second spraying and washing device, and the second drying device. The second driving member is connected to the second circulating filter belt and is used to drive the second circulating filter belt to circulate and rotate in the direction of sequentially passing through the second filtration device, the second impurity suction device, the second spraying and washing device, the second drying device, and then back to the second filtration device. The second filtration device is communicated with the first filtration device and is used to filter the lithium-ion battery slurry through the second circulating filter belt.

4. The continuous impurity removal system for lithium-ion battery slurry according to claim 3, characterized in that, A second feed inlet is arranged at a position above the second circulating filter belt corresponding to the second filtration device, and a second discharge outlet is arranged at a position below the second circulating filter belt corresponding to the second filtration device.

5. The continuous impurity removal system for lithium-ion battery slurry according to claim 3, characterized in that, The second impurity suction device is used to suck the large-particle impurities on the second circulating filter belt, the second spraying and washing device is used to wash the second circulating filter belt, and the second drying device is used to dry the second circulating filter belt.

6. The continuous impurity removal system for lithium-ion battery slurry according to claim 1, characterized in that, A third feed port is provided at a position above the cyclic iron removal belt corresponding to the adsorption device, and a third discharge port is provided at a position below the cyclic iron removal belt corresponding to the adsorption device.

7. The continuous impurity removal system for lithium-ion battery slurry according to claim 1, characterized in that, The cyclic iron removal belt is used for adsorbing iron substances in the lithium-ion battery slurry, the third spraying device is used for flushing the cyclic iron removal belt, and the third drying device is used for drying the cyclic iron removal belt.

8. The continuous impurity removal system for lithium-ion battery slurry according to claim 1, characterized in that, It further includes a slurry pump and a coating head. The feed end of the slurry pump is connected to the adsorption device through a pipeline, and the discharge end of the slurry pump is connected to the coating head through a pipeline.

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