Electrode sheet structure, and control system and method for electrode sheet manufacturing

Abstract

The present application discloses an electrode sheet structure, and a control system and method for electrode sheet manufacturing. In the electrode sheet structure, a substrate is provided with a tab region, a first cutting region, and a second cutting region, the tab region being located between the first cutting region and the second cutting region; and a slurry layer is divided into a first slurry layer and a second slurry layer, the first slurry layer being disposed between the first cutting region and the tab region and between the second cutting region and the tab region, the second slurry layer being disposed in the first cutting region and the second cutting region, and the thickness of the first slurry layer being greater than the thickness of the second slurry layer.

Description

Pole piece structure, pole piece manufacturing control system and control method

[0001] The present application claims priority to the Chinese patent application No. 2024113679264 filed on September 27, 2024 with the China Patent Office, the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a pole piece structure, a pole piece manufacturing control system and a control method. BACKGROUND

[0003] The pole piece is one of the main components of the battery cell, and the pole piece is divided into positive pole piece and negative pole piece. The positive and negative pole pieces of the battery cell are the current collectors with a specific shape and coated with active material on the foil surface. The preparation process of the pole piece usually includes stirring, coating, cold pressing and cutting processes. TECHNICAL PROBLEM

[0004] At present, in the coating process of the pole piece, the thickness of the coating area on the foil surface is uniform, and the coating thickness is relatively thick. When the pole piece is cut, the cutting section is prone to be rough, and there are large particles, dropping material and burrs, which can cause the battery separator to melt and cause the battery to short circuit, resulting in the risk of low voltage or self-ignition of the battery. TECHNICAL SOLUTION

[0005] In a first aspect, the present application provides a pole piece structure, comprising:

[0006] A base material, the base material is provided with a tab area, a first cutting area and a second cutting area; the tab area is located between the first cutting area and the second cutting area;

[0007] A slurry layer, the slurry layer is arranged in close contact with the base material, the slurry layer is divided into a first slurry layer and a second slurry layer, the first slurry layer is arranged between the first cutting area and the tab area and between the second cutting area and the tab area; the second slurry layer is arranged in the first cutting area and the second cutting area, and the thickness of the first slurry layer is greater than the thickness of the second slurry layer.

[0008] In one of the embodiments, the base material has opposite first and second plate surfaces; the first cutting area includes a first cutting sub-area and a second cutting sub-area; the second cutting area includes a third cutting sub-area and a fourth cutting sub-area;

[0009] The first and third cutting sub-areas are arranged on the first plate surface respectively, and the second and fourth cutting sub-areas are arranged on the second plate surface respectively; the first and second cutting sub-areas are arranged correspondingly, and the third and fourth cutting sub-areas are arranged correspondingly.

[0010] The projection of the first cutting sub-region from the first plate surface to the second plate surface at least partially overlaps the second cutting sub-region, and the projection of the third cutting sub-region from the first plate surface to the second plate surface at least partially overlaps the fourth cutting sub-region.

[0011] In a second aspect, the application provides a pole piece manufacturing control system configured to manufacture the pole piece structure according to any one of the above aspects, the pole piece manufacturing control system comprising:

[0012] a transmission mechanism configured to support the base material; the base material is provided with a tab area, a first cutting area and a second cutting area according to preset pole piece coating data;

[0013] a feeding module configured to transport slurry;

[0014] a control module connected to the transmission mechanism and the feeding module; the control module is configured to obtain preset pole piece coating data, and control the transmission mechanism to drive the base material to move at a preset speed according to the preset pole piece coating data;

[0015] The control module is further configured to control the feeding module to coat the first cutting area and the tab area with slurry of a first thickness to form a first slurry layer between the first cutting area and the tab area, and coat the second cutting area and the tab area with slurry of a second thickness to form a second slurry layer between the second cutting area and the tab area according to the preset speed and the preset pole piece coating data; the first thickness is greater than the second thickness.

[0016] In a third aspect, the application provides a pole piece manufacturing control method applied to the pole piece manufacturing control system according to any one of the above aspects, the pole piece manufacturing control method comprising the following steps:

[0017] obtaining preset pole piece coating data, and controlling the transmission mechanism to drive the base material to move at a preset speed according to the preset pole piece coating data; the base material is provided with a tab area, a first cutting area and a second cutting area according to the preset pole piece coating data;

[0018] controlling the feeding module to coat the first cutting area and the tab area with slurry of a first thickness to form a first slurry layer between the first cutting area and the tab area, and coat the second cutting area and the tab area with slurry of a second thickness to form a second slurry layer between the second cutting area and the tab area according to the preset speed and the preset pole piece coating data; the first thickness is greater than the second thickness. Advantages

[0019] The application provides the following beneficial effects: the above-mentioned pole piece structure comprises a base material and a slurry layer, the base material is provided with a tab area, a first cutting area and a second cutting area; the tab area is located between the first cutting area and the second cutting area; the slurry layer is attached to the base material, the slurry layer is divided into a first slurry layer and a second slurry layer, the first slurry layer is arranged between the first cutting area and the tab area and between the second cutting area and the tab area; the second slurry layer is arranged in the first cutting area and the second cutting area, the thickness of the first slurry layer is greater than that of the second slurry layer, and after the first cutting area and the second cutting area are cut, an optimized pole piece structure can be obtained. The application coats the second slurry layer in the first cutting area and the second cutting area, and sets the thickness of the second slurry layer to be less than that of the first slurry layer, so that the thickness of the slurry in the first cutting area and the second cutting area is relatively thin, and a groove shape is formed in the first cutting area and the second cutting area. Since the first cutting area and the second cutting area are coated with the slurry, the energy density of the battery is ensured, and when the first cutting area and the second cutting area are cut, the force can be evenly distributed, the cutting surface is flat, and the cutting position is prevented from dropping large particles and burrs, so as to avoid internal short circuit of the battery, battery combustion, improve the safety and reliability of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a first structure schematic diagram of a pole piece structure in the embodiment of the application;

[0021] FIG. 2 is a second structure schematic diagram of a pole piece structure in the embodiment of the application;

[0022] FIG. 3 is a first circuit structure schematic diagram of a pole piece manufacturing control system in the embodiment of the application;

[0023] FIG. 4 is a second circuit structure schematic diagram of a pole piece manufacturing control system in the embodiment of the application;

[0024] FIG. 5 is a third circuit structure schematic diagram of a pole piece manufacturing control system in the embodiment of the application;

[0025] FIG. 6 is a fourth circuit structure schematic diagram of a pole piece manufacturing control system in the embodiment of the application;

[0026] FIG. 7 is a fifth circuit structure schematic diagram of a pole piece manufacturing control system in the embodiment of the application;

[0027] FIG. 8 is a flow schematic diagram of a pole piece manufacturing control method in the embodiment of the application.

[0028] In the drawings:

[0029] 10, base material; 110, tab area; 120, first cutting area; 122, first cutting sub-area; 124, second cutting sub-area; 130, second cutting area; 132, third cutting sub-area; 134, fourth cutting sub-area; 20, slurry layer; 210, first slurry layer; 220, second slurry layer; 30, transmission mechanism; 40, feeding module; 410, pipe assembly; 412, first pipe; 414, second pipe; 416, third pipe; 420, valve body assembly; 422, backflow valve; 424, proportional valve; 426, feeding valve; 50, control module; 60, position detection module; 70, detection feedback module.

[0030] Embodiments of the present application

[0031] In one embodiment, as shown in FIG. 1, a tab structure is provided, including a base material 10 and a slurry layer 20, the base material 10 is provided with a tab area 110, a first cutting area 120 and a second cutting area 130; the tab area 110 is located between the first cutting area 120 and the second cutting area 130; the slurry layer 20 is provided in close contact with the base material 10, the slurry layer 20 is divided into a first slurry layer 210 and a second slurry layer 220, the first slurry layer 210 is provided between the first cutting area 120 and the tab area 110 and between the second cutting area 130 and the tab area 110; the second slurry layer 220 is provided in the first cutting area 120 and the second cutting area 130, the thickness of the first slurry layer 210 is greater than the thickness of the second slurry layer 220.

[0032] The base material 10 can be, but is not limited to, an aluminum foil material, and the base material 10 can be in a sheet structure. For example, the base material 10 is provided with at least one tab area 110 and at least two cutting areas, the cutting areas are arranged at intervals, and one tab area 110 is arranged between any two adjacent cutting areas. One of the two adjacent cutting areas can be determined as the first cutting area 120, and the other cutting area can be determined as the second cutting area 130, i.e., the tab area 110 is arranged between the first cutting area 120 and the second cutting area 130. It should be noted that the positions and sizes of the cutting areas and the positions and sizes of the tab areas 110 can be preset based on the model of the battery product, and then the base material 10 can be regionally divided according to the preset positions and sizes of the cutting areas and the preset positions and sizes of the tab areas 110 to obtain the tab area 110, the first cutting area 120 and the second cutting area 130.

[0033] The slurry layer 20 refers to a coating layer composed of a slurry. The slurry layer 20 can be attached to the substrate 10 by coating. The slurry layer 20 can include a first slurry layer 210 and a second slurry layer 220. For example, the slurry contained in the first slurry layer 210 is the same material as the slurry contained in the second slurry layer 220. The thickness of the first slurry layer 210 is greater than the thickness of the second slurry layer 220. For example, a corresponding container can output a slurry with a first thickness to form the first slurry layer 210. A corresponding container can output a slurry with a second thickness to form the second slurry layer 220. The first thickness is greater than the second thickness. It should be noted that the slurry can be a mixture of a powder active material and a binder. The powder active material and the binder can be stirred to form the slurry through a stirring process.

[0034] The first slurry layer 210 is formed on the substrate 10 between the first cutting area 120 and the tab area 110 by coating the slurry with the first thickness between the first cutting area 120 and the tab area 110. The first slurry layer 210 is formed on the substrate 10 between the second cutting area 130 and the tab area 110 by coating the slurry with the second thickness between the second cutting area 130 and the tab area 110. The second slurry layer 220 is formed on the first cutting area 120 by coating the slurry with the second thickness on the first cutting area 120. The second slurry layer 220 is formed on the second cutting area 130 by coating the slurry with the second thickness on the second cutting area 130. Thus, the first cutting area 120 forms a groove structure, and the second cutting area 130 forms a groove structure. By cutting the first cutting area 120 and the second cutting area 130, an optimized electrode structure is formed. By coating the slurry on all areas except the tab area 110, the energy density of the battery can be ensured. By reducing the thickness of the slurry in the first cutting area 120 and the second cutting area 130, the first cutting area 120 and the second cutting area 130 form grooves. When the first cutting area 120 and the second cutting area 130 are cut, the cutting surface is smooth, avoiding the formation of burrs and large particles on the cutting surface, which can cause the corresponding battery separator to melt and cause the battery to short circuit, low pressure, or spontaneous combustion.

[0035] It should be noted that the tab area 110 does not need to be coated with slurry, and thus the tab area 110 forms a bare area, so that the tab area 110 can be used for welding the tab.

[0036] In the above embodiment, the substrate 10 is provided with the tab area 110, the first cutting area 120 and the second cutting area 130; the tab area 110 is located between the first cutting area 120 and the second cutting area 130; the slurry layer 20 is attached to the substrate 10, and the slurry layer 20 is divided into the first slurry layer 210 and the second slurry layer 220, the first slurry layer 210 is arranged between the first cutting area 120 and the tab area 110 and between the second cutting area 130 and the tab area 110; the second slurry layer 220 is arranged in the first cutting area 120 and the second cutting area 130, the thickness of the first slurry layer 210 is greater than the thickness of the second slurry layer 220, and then after cutting the first cutting area 120 and the second cutting area 130, an optimized pole piece structure can be obtained. The second slurry layer 220 is coated in the first cutting area 120 and the second cutting area 130, and the thickness of the second slurry layer 220 is less than the thickness of the first slurry layer 210, so that the thickness of the slurry in the first cutting area 120 and the second cutting area 130 is thin, and then a groove shape is formed in the first cutting area 120 and the second cutting area 130. Since the first cutting area 120 and the second cutting area 130 are coated with slurry, the energy density of the battery is ensured, and the first cutting area 120 and the second cutting area 130 can be uniformly stressed when cutting, the cutting surface is flat, and large particles and burrs are avoided. Dropping and causing internal short circuit of the battery, causing the battery to burn, improving the safety and reliability of the battery.

[0037] In one embodiment, as shown in FIG. 2, the substrate 10 has opposite first and second plate surfaces; the first cutting area 120 includes a first cutting sub-area 122 and a second cutting sub-area 124; the second cutting area 130 includes a third cutting sub-area 132 and a fourth cutting sub-area 134; the first and third cutting sub-areas 122 and 132 are respectively arranged on the first plate surface, and the second and fourth cutting sub-areas 124 and 134 are respectively arranged on the second plate surface; the first and second cutting sub-areas 122 and 124 are correspondingly arranged, and the third and fourth cutting sub-areas 132 and 134 are correspondingly arranged; the projection of the first cutting sub-area from the first plate surface to the second plate surface at least partially overlaps the second cutting sub-area, and the projection of the third cutting sub-area from the first plate surface to the second plate surface at least partially overlaps the fourth cutting sub-area.

[0038] The first plate surface of the substrate 10 is opposite to the second plate surface, and the first plate surface and the second plate surface of the substrate 10 are both the largest side surfaces. The first plate surface of the substrate 10 is provided with a first cutting sub-area 122, and the second plate surface of the substrate 10 is provided with a second cutting sub-area 124. The first cutting sub-area 122 and the second cutting sub-area 124 can be cutting sub-areas with the same size and shape. The first cutting sub-area 122 and the second cutting sub-area 124 can be completely symmetrical to the substrate 10. In an example, the projection of the first cutting sub-area 122 from the first plate surface to the second plate surface at least partially overlaps the second cutting sub-area 124.

[0039] The first plate surface of the substrate 10 is provided with a third cutting sub-area 132, and the second plate surface of the substrate 10 is provided with a fourth cutting sub-area 134. The third cutting sub-area 132 and the fourth cutting sub-area 134 can be cutting sub-areas with the same size and shape. The third cutting sub-area 132 and the fourth cutting sub-area 134 can be completely symmetrical to the substrate 10. In an example, the projection of the third cutting sub-area 132 from the first plate surface to the second plate surface at least partially overlaps the fourth cutting sub-area 134.

[0040] By arranging the first cutting sub-area 122, the third cutting sub-area 132 and the tab area 110 on the first plate surface, and the tab area 110 being located between the first cutting sub-area 122 and the third cutting sub-area 132, and by coating the second paste layer 220 on the first cutting sub-area 122 and the third cutting sub-area 132, the tab area 110 does not need to be coated with paste. The first paste layer 210 is coated on the substrate 10 which is not in the first cutting sub-area, the third cutting sub-area and the tab area. The thickness of the paste in the first cutting sub-area 122 and the third cutting sub-area 132 is relatively thin, and then the groove shape is formed in the first cutting area 120 and the second cutting area 130 respectively. The loss is reduced, the waste of paste is reduced, the cost is reduced, and in addition, since the paste is coated on the other areas of the substrate 10 except the tab area 110 of the first plate surface, the energy density of the battery is ensured, and when the first cutting sub-area 122 and the third cutting sub-area 132 are cut, the force can be evenly distributed, the cutting surface is flat, and the large particles falling and burrs in the cutting position are avoided, which can cause internal short circuit of the battery, cause the battery to burn, improve the safety and reliability of the battery.

[0041] For another example, by arranging the second cutting sub-area 124, the fourth cutting sub-area 134 and the tab area 110 on the second plate surface, and the tab area 110 is located between the second cutting sub-area 124 and the fourth cutting sub-area 134, by coating the second slurry layer 220 on the second cutting sub-area 124 and the fourth cutting sub-area 134, the tab area 110 does not need to be coated with slurry, and the first slurry layer 210 is coated on the substrate 10 which is not the second cutting sub-area, not the fourth cutting sub-area and not the tab area, so that the thickness of the slurry at the second cutting sub-area 124 and the fourth cutting sub-area 134 is thinner, and then the groove shape is formed in the second cutting area 130 and the fourth cutting area respectively, which reduces the loss, reduces the waste of slurry, and reduces the cost. In addition, since the tab area 110 on the second plate surface is not coated with slurry, other areas on the substrate 10 are coated with slurry, which ensures the energy density of the battery, and the second cutting sub-area 124 and the fourth cutting sub-area 134 can be uniformly stressed when cutting, the cutting surface is flat, and the cutting position is avoided. Large particles drop and burrs cause internal short circuit of the battery, causing the battery to burn, improving the safety and reliability of the battery.

[0042] In one embodiment, the width of the first cutting area 120 is less than or equal to the width of the tab area 110, and the width of the second cutting area 130 is less than or equal to the width of the tab area 110.

[0043] By setting the width of the first cutting area 120 and the second cutting area 130, the first cutting area 120 and the second cutting area 130 can meet the coating operation of the second slurry layer 220, while reducing the loss of the pole piece, reducing the waste of pole piece material, and reducing the cost.

[0044] In one embodiment, the first cutting sub-area 122 is provided with the second slurry layer 220, and the third cutting sub-area 132 is provided with the second slurry layer 220; and / or, the second cutting sub-area 124 is provided with the second slurry layer 220, and the fourth cutting sub-area 134 is provided with the second slurry layer 220.

[0045] For example, on the first plate surface of the substrate 10, only the first cutting sub-area 122 and the third cutting sub-area 132 are provided with the second slurry layer 220; on the second plate surface of the substrate 10, except for the tab area 110, the rest of the area (such as the second cutting sub-area 124 and the fourth cutting sub-area 134) is provided with the first slurry layer 210, thereby forming a single-sided slurry groove shape on the substrate 10, simplifying the process steps of coating the slurry, ensuring the energy density of the battery, and the first cutting sub-area 122 and the third cutting sub-area 132 can be uniformly stressed when cutting, the cutting surface is flat, and the cutting position is avoided. Large particles drop and burrs cause internal short circuit of the battery, causing the battery to burn, improving the safety and reliability of the battery.

[0046] For example, on the first plate surface of the substrate 10, the first slurry layer 210 is arranged in the areas other than the tab area 110 (such as the first cutting sub-area 122 and the third cutting sub-area 132); on the second plate surface of the substrate 10, the second slurry layer 220 is arranged only in the second cutting sub-area 124 and the fourth cutting sub-area 134, thereby forming a single-sided slurry groove shape on the substrate 10, simplifying the process step of coating the slurry, ensuring the energy density of the battery, and enabling uniform force during cutting of the second cutting sub-area 124 and the fourth cutting sub-area 134, thus avoiding large particles and burrs at the cutting position, which may cause internal short circuit of the battery, resulting in battery combustion, and improving the safety and reliability of the battery.

[0047] For example, as shown in FIGS. 1 and 2, on the first plate surface of the substrate 10, the second slurry layer 220 is arranged in the first cutting sub-area 122 and the third cutting sub-area 132; on the second plate surface of the substrate 10, the second slurry layer 220 is arranged in the second cutting sub-area 124 and the fourth cutting sub-area 134, thereby forming a double-sided slurry groove shape on the substrate 10, enabling uniform force during cutting of the corresponding cutting sub-area, further improving the flatness of the cutting surface, avoiding large particles and burrs at the cutting position, which may cause internal short circuit of the battery, resulting in battery combustion, and improving the safety and reliability of the battery.

[0048] In one embodiment, the tab area 110 is located between one-third and three-fifths of the total length of the first cutting area 120 to the second cutting area 130.

[0049] By arranging the tab area 110 between one-third and three-fifths of the total length of the first cutting area 120 to the second cutting area 130, i.e., the cutting position is arranged between one-third and three-fifths of the total length of the adjacent two tab areas 110, thereby expanding the selectability of the position of the cutting position, and enabling self-defined determination of the setting position of the cutting position according to the set range.

[0050] For example, the substrate 10 can be provided with a plurality of cutting areas and a plurality of tab areas 110, and there is one tab area 110 between the adjacent two cutting areas, i.e., there is one cutting area between the adjacent two tab areas 110, and the corresponding cutting area is cut, thereby obtaining each tab structure.

[0051] In one embodiment, as shown in FIG. 1 and FIG. 3, there is also provided a tab manufacturing control system configured to manufacture any one of the tab structures described above, the tab manufacturing control system comprising a transmission mechanism 30 configured to support the base material 10; the base material 10 is provided with the tab ear region 110, the first cutting region 120 and the second cutting region 130 according to preset tab coating data; a supply module 40 configured to transport the slurry; a control module 50 connected to the transmission mechanism 30 and the supply module 40; the control module 50 is configured to obtain the preset tab coating data, and according to the preset tab coating data, control the transmission mechanism 30 to drive the base material 10 to move at a preset speed; the control module 50 is further configured to control the supply module 40 to coat the first thickness of slurry between the first cutting region 120 and the tab ear region 110 and between the second cutting region 130 and the tab ear region 110 according to the preset speed and the preset tab coating data, so as to form the first slurry layer 210 between the first cutting region 120 and the tab ear region 110 and between the second cutting region 130 and the tab ear region 110, and coat the second thickness of slurry on the first cutting region 120 and the second cutting region 130 to form the second slurry layer 220; the first thickness is greater than the second thickness.

[0052] The transmission mechanism 30 can be used to support the base material 10, and the transmission mechanism 30 can also be used to drive the base material 10 to move. For example, the transmission mechanism 30 comprises a support table provided with a reference roller, and the reference roller is used to drive the base material 10 to move. The preset tab coating data includes but is not limited to the position and size of the cutting region and the position and size of the tab ear region 110. The first cutting region 120 and the second cutting region 130 are arranged on the base material 10 in a spaced manner, and the tab ear region 110 is arranged between the first cutting region 120 and the second cutting region 130.

[0053] The supply module 40 can be used to transport the slurry to coat the slurry on the corresponding position of the base material 10. For example, the supply module 40 can comprise a first container and a pump body, the first container is communicated with the pump body, the first container is used to store the slurry, and the pump body is configured to drive the slurry to be transported to the corresponding position on the base material 10 to coat the corresponding position on the base material 10.

[0054] For example, the operator can input the preset tab coating data according to the model of the corresponding battery. Based on the control module 50 being electrically connected to the transmission mechanism 30, the control module 50 obtains the preset tab coating data, generates a first control signal according to the preset tab coating data, and transmits the first control signal to the transmission mechanism 30, and then the transmission mechanism 30 drives the base material 10 to move at a preset speed according to the first control signal.

[0055] The control module 50 is electrically connected with the supply module 40. The control module 50 obtains preset speed and preset tab coating data, and controls the supply module 40 to output the slurry according to the preset speed and the preset tab coating data. Specifically, the control module 50 controls the supply module 40 to coat the first cutting area 120 with the slurry of the second thickness, so as to form the second slurry layer 220 on the first cutting area 120; the control module 50 controls the supply module 40 to coat the area between the first cutting area 120 and the tab area 110 with the slurry of the first thickness, so as to form the first slurry layer 210 between the first cutting area 120 and the tab area 110; the control module 50 controls the supply module 40 to be closed, so as to form the non-coating layer on the tab area 110; the control module 50 controls the supply module 40 to coat the area between the second cutting area 130 and the tab area 110 with the slurry of the first thickness, so as to form the first slurry layer 210 between the second cutting area 130 and the tab area 110; the control module 50 controls the supply module 40 to coat the second cutting area 130 with the slurry of the second thickness, so as to form the second slurry layer 220 on the second cutting area 130; the first thickness is set to be greater than the second thickness, so that the thickness of the slurry at the first cutting area 120 and the second cutting area 130 is relatively thin, so that the first cutting area 120 and the second cutting area 130 form a groove shape. Since the first cutting area 120 and the second cutting area 130 are coated with the slurry, the energy density of the battery is ensured, and when the first cutting area 120 and the second cutting area 130 are cut, the force can be evenly distributed, the cutting surface is flat, and the cutting position is avoided to have large particles and burrs, which can cause internal short circuit of the battery, cause the battery to burn, and improve the safety and reliability of the battery.

[0056] In one embodiment, the control module 50 is further configured to control the supply module 40 to output the slurry based on the first flow rate when the output end of the supply module 40 corresponds to the first cutting area 120; control the supply module 40 to output the slurry based on the second flow rate when the output end of the supply module 40 corresponds to the area between the first cutting area 120 and the tab area 110; control the supply module 40 to be closed when the output end of the supply module 40 corresponds to the tab area 110; control the supply module 40 to output the slurry based on the second flow rate when the output end of the supply module 40 corresponds to the area between the second cutting area 130 and the tab area 110; control the supply module 40 to output the slurry based on the first flow rate when the output end of the supply module 40 corresponds to the second cutting area 130; the first flow rate is less than the second flow rate.

[0057] For example, the supply module 40 can be arranged above the transmission mechanism 30, and the output end of the supply module 40 faces the base material 10 on the transmission mechanism 30. The base material 10 moves with the transmission mechanism 30, and when it is detected that the output end of the supply module 40 corresponds to the first cutting area 120, the control module 50 controls the supply module 40 to output the slurry to the first cutting area 120 based on the first flow rate, thereby forming the second slurry layer 220 in the first cutting area 120; when it is detected that the output end of the supply module 40 corresponds to the first cutting area 120 and the tab area 110, the supply module 40 is controlled to output the slurry to the first cutting area 120 and the tab area 110 based on the second flow rate, thereby forming the first slurry layer 210 between the first cutting area 120 and the tab area 110; when it is detected that the output end of the supply module 40 corresponds to the tab area 110, the control module 50 controls the supply module 40 to be closed, thereby forming the non-coated layer in the tab area 110; when it is detected that the output end of the supply module 40 corresponds to the second cutting area 130 and the tab area 110, the control module 50 controls the supply module 40 to output the slurry to the second cutting area 130 and the tab area 110 based on the second flow rate, thereby forming the first slurry layer 210 between the second cutting area 130 and the tab area 110; when it is detected that the output end of the supply module 40 corresponds to the second cutting area 130, the control module 50 controls the supply module 40 to output the slurry to the second cutting area 130 based on the first flow rate; thereby forming the second slurry layer 220 in the second cutting area 130; the first flow rate is set to be less than the second flow rate, thereby making the thickness of the second slurry layer 220 less than the thickness of the first slurry layer 210, that is, the thickness of the slurry in the first cutting area 120 and the second cutting area 130 is relatively thin, so that the first cutting area 120 and the second cutting area 130 form a groove shape, and the first cutting area 120 and the second cutting area 130 can be cut uniformly, the cutting surface is flat, and the cutting position is avoided to have large particles and burrs, which can cause internal short circuit of the battery, cause the battery to burn, and improve the safety and reliability of the battery.

[0058] In one embodiment, as shown in FIG. 4, the tab manufacturing control system further comprises a position detection module 60 connected to the control module 50; the position detection module 60 is configured to detect the movement distance data of the base material 10 and transmit the movement distance data to the control module 50; the control module 50 is further configured to control the opening and closing of the supply module 40 and the slurry output flow rate according to the movement distance data.

[0059] The position detection module 60 can be used to detect the movement distance data of the base material 10, for example, the position detection module 60 can include a displacement sensor.

[0060] The position detection module 60 is connected to the control module 50. When the transmission mechanism 30 drives the base material 10 to move, the position detection module 60 detects the moving distance of the base material 10, obtains corresponding moving distance data, and transmits the moving distance data to the control module 50. Then, the control module 50 controls the working state of the supply module 40 according to the moving distance data. For example, according to the moving distance data, it is determined that the base material 10 moves to the first cutting area 120 or the output end of the supply module 40 corresponding to the first cutting area 120, the supply module 40 is started, and the supply module 40 outputs the slurry based on the first flow rate to form the second slurry layer 220 in the first cutting area 120 or the second cutting area 130. For another example, according to the moving distance data, it is determined that the base material 10 moves to the output end of the supply module 40 corresponding to the tab area 110, the supply module 40 is closed to form the non-coating layer in the tab area 110. The moving distance of the base material 10 is detected in real time by the position detection module 60, and then the output size of the slurry is accurately controlled according to the moving condition of the base material 10, so that the first slurry layer 210 and the second slurry layer 220 are accurately formed on the corresponding position of the base material 10, and the accuracy of the slurry coating is improved.

[0061] In one embodiment, as shown in FIG. 5, the supply module 40 includes a pipeline assembly 410 and a valve body assembly 420; the valve body assembly 420 is arranged on the pipeline assembly 410; the valve body assembly 420 is connected to the control module 50; and the control module 50 is further configured to control the opening and closing and the opening degree of the valve body assembly 420 according to the moving distance data.

[0062] The pipeline assembly 410 can be composed of several pipelines, and the valve body assembly 420 can be composed of several valve bodies, which can be solenoid valves. The valve body assembly 420 is arranged on the pipeline assembly 410, and the valve body assembly 420 is in communication with the pipeline assembly 410 in the open state.

[0063] For example, based on the connection of the valve body assembly 420 and the control module 50, the control module 50 determines, according to the movement distance data, that the substrate 10 moves to the first cutting area 120 or the output end of the pipe assembly 410 corresponding to the first cutting area 120, controls the valve body assembly 420 to start, and controls the valve body assembly 420 to open based on the first preset opening degree, and then the pipe assembly 410 outputs the slurry based on the first flow rate to form the second slurry layer 220 in the first cutting area 120 or the second cutting area 130. The control module 50 determines, according to the movement distance data, that the substrate 10 moves to the output end of the pipe assembly 410 corresponding to the tab area 110, controls the valve body assembly 420 to close, so as to form a non-coating layer in the tab area 110. The control module 50 determines, according to the movement distance data, that the substrate 10 moves to the output end of the pipe assembly 410 corresponding to the first cutting area 120 and the tab area 110 or the second cutting area 130 and the tab area 110, controls the valve body assembly 420 to start, and controls the valve body assembly 420 to open based on the second preset opening degree, and then the pipe assembly 410 outputs the slurry based on the second flow rate to form the first slurry layer 210 between the first cutting area 120 and the tab area 110 or between the second cutting area 130 and the tab area 110. The position detection module 60 detects the movement distance of the substrate 10 in real time, and then according to the movement of the substrate 10, the opening and closing and the opening degree of the valve body assembly 420 are controlled to realize the precise control of the output of the slurry, so as to realize the precise formation of the first slurry layer 210 and the second slurry layer 220 on the corresponding position of the substrate 10, and improve the precision of the slurry coating. The recessed groove shape is formed in the first cutting area 120 and the second cutting area 130, and the cutting of the first cutting area 120 and the second cutting area 130 can be uniformly stressed, the cutting surface is flat, and the cutting position is avoided to have large particles and dropped material and burrs, which can cause internal short circuit of the battery, cause the battery to burn, and improve the safety and reliability of the battery.

[0064] In one embodiment, as shown in FIG. 6, the valve body assembly 420 includes a backflow valve 422, a proportional valve 424, and a feed valve 426; the pipe assembly 410 includes a first pipe 412, a second pipe 414, and a third pipe 416; the backflow valve 422, the proportional valve 424, and the feed valve 426 are connected to the control module 50; a first port of the proportional valve 424 is communicated with a first port of the feed valve 426 through the first pipe 412, and a second port of the proportional valve 424 is communicated with a first port of the backflow valve 422 through the second pipe 414; a second port of the backflow valve 422 is configured to input the slurry, a third port of the backflow valve 422 is configured to return the slurry through the third pipe 416, and a second port of the feed valve 426 is configured to output the slurry.

[0065] The return valve 422 is configured to return the slurry in the pipe assembly 410 to the first container. The proportional valve 424 is configured to control the flow rate of the slurry output. The feed valve 426 is configured to control the output or stop the output of the slurry.

[0066] For example, the return valve 422 is provided with a first magnet and a first valve core. When the first magnet moves downward, the first magnet closes the return port of the first valve core, so that the return is closed. When the first magnet moves upward, the first magnet is away from the return port of the first valve core, so that the return is opened. The proportional valve 424 is provided with a rotating member and a second valve core. According to the angle of rotation of the rotating member, the opening of the second valve core is closed, so as to adjust the opening size of the proportional valve 424. The feed valve 426 is provided with a third magnet and a third valve core. When the third magnet moves downward, the third magnet closes the output port of the third valve core, so that the output is closed. When the third magnet moves upward, the third magnet is away from the output port of the third valve core, so that the output is opened.

[0067] In one embodiment, the control module 50 is further configured to control the return of the return valve 422 to be closed and the feed valve 426 to be opened, and control the proportional valve 424 to be opened based on the first preset opening when the second port of the feed valve 426 corresponds to the first cutting area 120, so as to form the second slurry layer 220 of the second thickness in the first cutting area 120; control the return of the return valve 422 to be closed and the feed valve 426 to be opened, and control the proportional valve 424 to be opened based on the second preset opening when the second port of the feed valve 426 corresponds to the first cutting area 120 and the tab area 110, so as to form the first slurry layer 210 of the first thickness between the first cutting area 120 and the tab area 110; control the proportional valve 424 to be closed and the feed valve 426 to be closed, and control the return of the return valve 422 to be opened when the second port of the feed valve 426 corresponds to the tab area 110, so as to form the exposed area in the tab area 110; control the return of the return valve 422 to be closed and the feed valve 426 to be opened, and control the proportional valve 424 to be opened based on the second preset opening when the second port of the feed valve 426 corresponds to the second cutting area 130 and the tab area 110, so as to form the first slurry layer 210 of the first thickness between the second cutting area 130 and the tab area 110; control the return of the return valve 422 to be closed and the feed valve 426 to be opened, and control the proportional valve 424 to be opened based on the first preset opening when the second port of the feed valve 426 corresponds to the second cutting area 130, so as to form the second slurry layer 220 of the second thickness in the second cutting area 130.

[0068] For example, the backflow valve 422 is provided with a first valve core motor, the proportional valve 424 is provided with a second valve core motor, and the supply valve 426 is provided with a third valve core motor. The first valve core motor is used to control the up-down movement of the first magnetic rod, the second valve core motor is arranged to control the rotation angle of the rotating part, and the third valve core motor is used to control the up-down movement of the third magnetic rod.

[0069] Based on the connection of the control module 50 to the first valve core motor, the second valve core motor and the third valve core motor respectively, when the second port of the supply valve 426 corresponds to the first cutting area 120, the control module 50 controls the first valve core motor to start, the first valve core motor drives the first magnetic rod to move downward, so that the backflow of the backflow valve 422 is closed; the third valve core motor is controlled to start, the third valve core motor drives the third magnetic rod to move upward, so that the supply valve 426 is opened; and the second valve core motor is controlled to start, the second valve core motor drives the rotating part to rotate by a corresponding angle, so that the proportional valve 424 is opened based on the first preset opening, and then the second port of the supply valve 426 outputs the slurry to the first cutting area 120, so that the second slurry layer 220 of the second thickness is formed in the first cutting area 120.

[0070] When the second port of the supply valve 426 corresponds to the first cutting area 120 and the tab area 110, the control module 50 controls the first valve core motor to start, the first valve core motor drives the first magnetic rod to move downward, so that the backflow of the backflow valve 422 is closed; the third valve core motor is controlled to start, the third valve core motor drives the third magnetic rod to move upward, so that the supply valve 426 is opened; and the second valve core motor is controlled to start, the second valve core motor drives the rotating part to rotate by a corresponding angle, so that the proportional valve 424 is opened based on the second preset opening, and then the second port of the supply valve 426 outputs the slurry to the first cutting area 120 and the tab area 110, so that the first slurry layer 210 of the first thickness is formed between the first cutting area 120 and the tab area 110.

[0071] When the second port of the supply valve 426 corresponds to the tab area 110, the control module 50 controls the third valve core motor to start, the third valve core motor drives the third magnetic rod to move downward, so that the supply valve 426 is closed; the second valve core motor is controlled to start, the second valve core motor drives the rotating part to close the valve core, so that the proportional valve 424 is closed; the first valve core motor is controlled to start, the first valve core motor drives the first magnetic rod to move upward, so that the backflow of the backflow valve 422 is opened, and then the second port of the supply valve 426 stops outputting the slurry, that is, there is no slurry layer 20 in the tab area 110, so that the exposed area is formed in the tab area 110.

[0072] The control module 50 controls the first valve core motor to start when the second port of the feeding valve 426 corresponds to the second cutting area 130 and the tab area 110 between them, the first valve core motor drives the first magnetic rod to move downward, so that the backflow of the backflow valve 422 is closed; the third valve core motor is started, the third valve core motor drives the third magnetic rod to move upward, so that the feeding valve 426 is opened; and the second valve core motor is started, the second valve core motor drives the rotating part to rotate by a corresponding angle, so that the proportional valve 424 is opened based on the second preset opening, and then the second port of the feeding valve 426 outputs the slurry between the second cutting area 130 and the tab area 110, so that the first slurry layer 210 of the first thickness is formed between the second cutting area 130 and the tab area 110.

[0073] The control module 50 controls the first valve core motor to start when the second port of the feeding valve 426 corresponds to the second cutting area 130, the first valve core motor drives the first magnetic rod to move downward, so that the backflow of the backflow valve 422 is closed; the third valve core motor is started, the third valve core motor drives the third magnetic rod to move upward, so that the feeding valve 426 is opened; and the second valve core motor is started, the second valve core motor drives the rotating part to rotate by a corresponding angle, so that the proportional valve 424 is opened based on the first preset opening, and then the second port of the feeding valve 426 outputs the slurry to the second cutting area 130, so that the second slurry layer 220 of the second thickness is formed in the second cutting area 130, thereby obtaining the first cutting area 120 and the second cutting area 130 with a groove shape, reducing the slurry loss, reducing the cost, ensuring the energy density of the battery, and ensuring that the first cutting area 120 and the second cutting area 130 are cut evenly, the cutting surface is flat, and the cutting position is avoided. Large particles drop and burrs, which can cause internal short circuit of the battery, cause the battery to burn, improve the safety and reliability of the battery.

[0074] In one example, the control module 50 can include a parameter setting unit, a communication control unit, a size calculation unit, and a valve core execution unit. The parameter setting unit is set to set the position and size of the tab area 110, the position and size of the cutting area, and the size of the overall coating length according to the battery product model. The communication control unit is set to transmit signals to the set parameters to accurately give data and ensure the accuracy of the parameters. The size calculation unit: accurately measures the rotation size by the rotation position of the transmission mechanism 30 to obtain the rotation size data. The valve core execution module: controls the corresponding magnetic rod to move up and down and the rotating part to rotate according to the rotation size data and the set parameters, performs the corresponding signal action, completes the slurry coating on the base material 10, and obtains the tab structure with a groove shape at the cutting position.

[0075] In one embodiment, as shown in FIG. 7, the pole piece manufacturing control system further comprises a detection feedback module 70 connected to the control module 50; the detection feedback module 70 is configured to detect the size of the coated and formed pole piece structure, obtain size data, and transmit the size data to the control module 50; the control module 50 determines the yield of the coated and formed pole piece structure according to the size data.

[0076] The detection feedback module 70 can be used to measure the size of the coated and formed pole piece structure online to obtain corresponding size data, the control module 50 can obtain the corresponding size data, compare the size data with a preset threshold, determine whether the corresponding pole piece structure meets the requirements according to the comparison result, and further obtain the yield of the corresponding pole piece structure. In addition, real-time feedback adjustment can be performed according to the processing result.

[0077] In one embodiment, as shown in FIG. 8, a pole piece manufacturing control method is also provided, which is applied to the pole piece manufacturing control system of any one of the above embodiments, and the pole piece manufacturing control method comprises the following steps:

[0078] In step S810, preset pole piece coating data is obtained, and a transmission mechanism is controlled to move the base material at a preset speed based on the preset pole piece coating data. The base material is provided with a lug area, a first cutting area and a second cutting area according to the preset pole piece coating data.

[0079] In step S820, a supply module is controlled to coat a first thickness of slurry between the first cutting area and the lug area and between the second cutting area and the lug area, and to coat a second thickness of slurry on the first cutting area and the second cutting area, according to the preset speed and the preset pole piece coating data, so as to form a first slurry layer between the first cutting area and the lug area and between the second cutting area and the lug area, and to form a second slurry layer on the first cutting area and the second cutting area; the first thickness is greater than the second thickness.

[0080] Specifically, by coating the slurry of the first thickness between the first cutting area and the tab area, a first slurry layer is formed on the substrate between the first cutting area and the tab area; by coating the slurry of the second thickness between the second cutting area and the tab area, a first slurry layer is formed on the substrate between the second cutting area and the tab area; by coating the slurry of the second thickness on the first cutting area, a second slurry layer is formed on the first cutting area; by coating the slurry of the second thickness on the second cutting area, a second slurry layer is formed on the second cutting area; so that the first cutting area forms a groove structure, the second cutting area forms a groove structure, and by cutting the first cutting area and the second cutting area, an optimized electrode sheet structure is formed. By coating the slurry on all areas except the tab area, the energy density of the battery can be ensured; by reducing the thickness of the slurry in the first cutting area and the second cutting area, the first cutting area and the second cutting area form grooves, and when the first cutting area and the second cutting area are cut, the cutting surface is smooth, avoiding the formation of burrs and large particles on the cutting surface, which can cause the corresponding battery separator to melt, resulting in battery short circuit, low battery voltage or self-ignition, etc., improving the safety and reliability of the battery.

[0081] It should be understood that although the steps in the flowchart of FIG. 7 are shown in sequence according to the direction of the arrows, these steps are not necessarily executed in sequence according to the direction of the arrows. Unless otherwise specified herein, there is no strict order limitation for the execution of these steps, and these steps can be executed in other orders. Moreover, at least part of the steps in FIG. 8 can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or sub-steps or stages of other steps.

[0082] In one embodiment, an electric core is also provided, comprising the electrode sheet structure of any one of the above.

[0083] For specific description of the electrode sheet structure, reference can be made to the specific description of the electrode sheet structure in the above embodiments, which will not be repeated here.

[0084] The battery cell can be a lithium ion battery cell, and the battery cell can have a cylindrical structure. The battery cell includes a tab structure, and the tab structure includes a base material and a slurry layer. The base material is provided with a tab area, a first cutting area, and a second cutting area. The tab area is located between the first cutting area and the second cutting area. The slurry layer is divided into a first slurry layer and a second slurry layer. The first slurry layer is arranged between the first cutting area and the tab area and between the second cutting area and the tab area. The second slurry layer is arranged in the first cutting area and the second cutting area. The thickness of the first slurry layer is greater than the thickness of the second slurry layer. After cutting the first cutting area and the second cutting area, an optimized tab structure can be obtained.

[0085] In the above embodiment, by coating the second slurry layer in the first cutting area and the second cutting area, and setting the thickness of the second slurry layer to be less than the thickness of the first slurry layer, the thickness of the slurry in the first cutting area and the second cutting area is thin, and a groove shape is formed in the first cutting area and the second cutting area. Since the first cutting area and the second cutting area are coated with slurry, the energy density of the battery is ensured, and the first cutting area and the second cutting area can be uniformly stressed when cutting, the cutting surface is flat, and large particles and burrs are avoided, which can cause internal short circuit of the battery, resulting in battery combustion, and improve the safety and reliability of the battery.

[0086] In one embodiment, the present application provides a computer readable storage medium, and the computer readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the tab manufacturing control method in any of the above embodiments are implemented.

[0087] For example, when the computer program is executed by the processor, the steps of the tab manufacturing control method are as follows:

[0088] The preset tab coating data is obtained, and the transmission mechanism is driven to move the base material based on the preset speed according to the preset tab coating data. The base material is provided with a tab area, a first cutting area, and a second cutting area according to the preset tab coating data. According to the preset speed and the preset tab coating data, the first cutting area and the tab area between the second cutting area and the tab area are coated with a first thickness of slurry by the feeding module to form a first slurry layer between the first cutting area and the tab area and between the second cutting area and the tab area. The second cutting area and the second cutting area are coated with a second thickness of slurry to form a second slurry layer in the first cutting area and the second cutting area. The first thickness is greater than the second thickness.

[0089] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the computer program can include the processes of the above-mentioned embodiments of each division method. Any reference to memory, storage, database or other medium used in each embodiment provided by the present application can include non-volatile and / or volatile memory. The non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. The volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

Claims

1. A pole piece structure, comprising: a substrate, the substrate being provided with a tab area, a first cutting area and a second cutting area; the tab area being located between the first cutting area and the second cutting area; a slurry layer, the slurry layer being provided in contact with the substrate, the slurry layer being divided into a first slurry layer and a second slurry layer, the first slurry layer being provided between the first cutting area and the tab area and between the second cutting area and the tab area; the second slurry layer being provided in the first cutting area and the second cutting area, the thickness of the first slurry layer being greater than the thickness of the second slurry layer.

2. The pole piece structure of claim 1, wherein, the substrate having opposite first and second plate surfaces; the first cutting area comprising a first cutting sub-area and a second cutting sub-area; the second cutting area comprising a third cutting sub-area and a fourth cutting sub-area; the first and third cutting sub-areas being respectively provided on the first plate surface, the second and fourth cutting sub-areas being respectively provided on the second plate surface; the first cutting sub-area being provided in correspondence with the second cutting sub-area, the third cutting sub-area being provided in correspondence with the fourth cutting sub-area; a projection of the first cutting sub-area from the first plate surface to the second plate surface at least partially overlapping the second cutting sub-area, a projection of the third cutting sub-area from the first plate surface to the second plate surface at least partially overlapping the fourth cutting sub-area.

3. The pole piece structure of claim 1, wherein, the width of the first cutting area being less than or equal to the width of the tab area, the width of the second cutting area being less than or equal to the width of the tab area.

4. The pole piece structure according to any one of claims 1 to 3, wherein the tab area being located between one-third and two-thirds of the total length of the first cutting area to the second cutting area. 5.A pole piece manufacturing control system configured to manufacture the pole piece structure of any one of claims 1 to 4, the pole piece manufacturing control system comprising: a transmission mechanism configured to support a substrate; the substrate being provided with a tab area, a first cutting area and a second cutting area according to preset pole piece coating data; a feeding module configured to transport a slurry; a control module connected to the transmission mechanism and the feeding module; the control module being configured to obtain the preset pole piece coating data and control the transmission mechanism to move the substrate at a preset speed based on the preset pole piece coating data; the control module being further configured to control the feeding module to coat the first slurry layer having a first thickness between the first cutting area and the tab area and between the second cutting area and the tab area to form the first slurry layer between the first cutting area and the tab area and between the second cutting area and the tab area, and to coat the second slurry layer having a second thickness in the first cutting area and the second cutting area to form the second slurry layer in the first cutting area and the second cutting area, according to the preset speed and the preset pole piece coating data; the first thickness being greater than the second thickness.

6. The pole piece manufacturing control system of claim 5, wherein, The control module is further configured to control the supply module to output the slurry based on a first flow rate when the output end of the supply module corresponds to the first cutting area, to output the slurry based on a second flow rate when the output end of the supply module corresponds to between the first cutting area and the tab area, to close when the output end of the supply module corresponds to the tab area, to output the slurry based on the second flow rate when the output end of the supply module corresponds to between the second cutting area and the tab area, and to output the slurry based on the first flow rate when the output end of the supply module corresponds to the second cutting area, the first flow rate being less than the second flow rate.

7. The pole piece manufacturing control system of claim 5, wherein, The position detection module is connected to the control module. The position detection module is configured to detect movement distance data of the substrate and transmit the movement distance data to the control module. The control module is further configured to control the opening and closing of the supply module and the output flow rate of the slurry according to the movement distance data.

8. The pole piece manufacturing control system of claim 7, wherein, The supply module comprises a pipeline assembly and a valve body assembly, and the valve body assembly is arranged on the pipeline assembly. The valve body assembly is connected to the control module, and the control module is further configured to control the opening and closing of the valve body assembly and the opening degree of the valve according to the movement distance data.

9. The pole piece manufacturing control system of claim 8, wherein, The valve body assembly comprises a return valve, a proportional valve and a supply valve, and the pipeline assembly comprises a first pipeline, a second pipeline and a third pipeline, and the return valve, the proportional valve and the supply valve are connected to the control module. A first port of the proportional valve is connected to a first port of the supply valve through the first pipeline, and a second port of the proportional valve is connected to a first port of the return valve through the second pipeline. A second port of the return valve is arranged to input the slurry, a third port of the return valve is arranged to return the slurry through the third pipeline, and a second port of the supply valve is arranged to output the slurry.

10. The pole piece manufacturing control system of claim 9, wherein, The control module is further configured to control the return valve to close and the supply valve to open, and control the proportional valve to open based on a first preset opening degree to form a second slurry layer of a second thickness in the first cutting area when the second port of the supply valve corresponds to the first cutting area. The control module is further configured to control the return valve to close and the supply valve to open, and control the proportional valve to open based on a second preset opening degree to form a first slurry layer of a first thickness in the first cutting area and the tab area when the second port of the supply valve corresponds to between the first cutting area and the tab area. The control module is further configured to control the proportional valve to close and the supply valve to close, and control the return valve to open to form a bare area in the tab area when the second port of the supply valve corresponds to the tab area. when the second port of the supply valve corresponds to between the second cutting area and the tab area, controlling the backflow of the backflow valve to be closed and the supply valve to be opened, and controlling the proportional valve to be opened based on a second preset opening degree, so as to form a first slurry layer of a first thickness between the second cutting area and the tab area; when the second port of the supply valve corresponds to the second cutting area, controlling the backflow of the backflow valve to be closed and the supply valve to be opened, and controlling the proportional valve to be opened based on a first preset opening degree, so as to form a second slurry layer of a second thickness in the second cutting area.

11. The pole piece manufacturing control system according to any one of claims 5 to 10, wherein Further comprising a detection feedback module connected to the control module; The detection feedback module is configured to detect the size of the coated and formed tab structure to obtain size data, and transmit the size data to the control module; the control module determines the qualified rate of the coated and formed tab structure according to the size data.

12. A tab manufacturing control method applied to the tab manufacturing control system according to any one of claims 5 to 11, the tab manufacturing control method comprising the following steps: obtaining preset tab coating data, and controlling the transmission mechanism to drive the substrate to move at a preset speed based on the preset tab coating data; The substrate is provided with a tab area, a first cutting area and a second cutting area according to the preset tab coating data; controlling the supply module to coat the slurry of the first thickness between the first cutting area and the tab area and between the second cutting area and the tab area according to the preset speed and the preset tab coating data, so as to form a first slurry layer between the first cutting area and the tab area and between the second cutting area and the tab area, and coat the slurry of the second thickness on the first cutting area and the second cutting area, so as to form a second slurry layer on the first cutting area and the second cutting area; the first thickness is greater than the second thickness.

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