CN214243120U - Coating deviation correcting device and coating system - Google Patents
Coating deviation correcting device and coating system Download PDFInfo
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- CN214243120U CN214243120U CN202022892535.8U CN202022892535U CN214243120U CN 214243120 U CN214243120 U CN 214243120U CN 202022892535 U CN202022892535 U CN 202022892535U CN 214243120 U CN214243120 U CN 214243120U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application provides a coating deviation correcting device and coating system belongs to battery manufacturing technical field. The coating deviation correcting device is arranged between the first coating mechanism and the second coating mechanism, the first coating mechanism is used for coating the front surface of the pole piece base material to form a first coating area, and the second coating mechanism is used for coating the back surface of the pole piece base material to form a second coating area. The coating deviation correcting device comprises a detection mechanism and a deviation correcting mechanism. The detection mechanism is configured to detect a position of the first coating zone. The deviation rectifying mechanism is used for responding to the detection result of the detection mechanism so as to adjust the relative position of the pole piece substrate and the second coating mechanism, and reduce the offset of the second coating area relative to the first coating area. The coating deviation correcting device with the structure corrects the deviation by taking the first coating area of the pole piece substrate as a reference, can effectively reduce the offset of the second coating area relative to the first coating area, improves the quality of products and reduces the reject ratio of the products.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to a coating deviation correcting device and a coating system.
Background
In the coating system, the coating deviation correcting device is positioned between the first coating mechanism and the second coating mechanism, after the front surface of the pole piece base material is coated by the first coating mechanism and is corrected by the coating deviation correcting device, the back surface of the pole piece base material is coated by the second coating mechanism.
At present, a coating deviation-correcting device in a coating system has poor deviation-correcting effect, and the condition that the coating area on the front side and the coating area on the back side of a pole piece substrate have larger displacement easily occurs.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a coating deviation correcting device and a coating system, which aim to solve the problem that the existing coating deviation correcting device is easy to cause large dislocation quantity of a coating area on the front side and a coating area on the back side of a pole piece substrate.
In a first aspect, an embodiment of the present application provides a coating deviation rectifying device, configured to be disposed between a first coating mechanism and a second coating mechanism, where the first coating mechanism is configured to coat a front surface of a pole piece substrate to form a first coating area, the second coating mechanism is located downstream of the first coating mechanism and is configured to coat a back surface of the pole piece substrate to form a second coating area, and the coating deviation rectifying device includes a detection mechanism and a deviation rectifying mechanism;
a detection mechanism configured to detect a position of the first coating zone;
the deviation rectifying mechanism is used for responding to the detection result of the detection mechanism so as to adjust the relative position of the pole piece substrate and the second coating mechanism, and reduce the offset of the second coating area relative to the first coating area.
In the scheme, the position of the first coating area of the pole piece base material is detected through the detection mechanism, and the deviation rectification mechanism can respond to the detection result of the detection mechanism so as to adjust the relative position of the pole piece base material and the second coating mechanism and realize deviation rectification. The coating deviation correcting device with the structure corrects the deviation by taking the first coating area of the pole piece substrate as a reference, so that the second coating mechanism can coat the position corresponding to the first coating area on the reverse side of the pole piece substrate, the offset of the second coating area relative to the first coating area can be effectively reduced, the quality of a product is improved, and the reject ratio of the product is reduced.
In some embodiments, the detection mechanism is configured to detect a position of an edge of the first coating zone.
In the above scheme, the detection mechanism may detect the position of the edge of the first coating region, so as to obtain the position of the first coating region.
In some embodiments, the detection mechanism comprises two detection units for detecting the positions of two opposite edges of the first coating region in the width direction of the pole piece substrate, respectively.
In the scheme, the two detection units are used for respectively detecting the positions of the two opposite edges of the first coating area in the width direction, so that the detection error can be reduced, and the detection precision is improved.
In some embodiments, the detection unit is a photodetector.
In the above scheme, the detecting unit is a photoelectric detector, and the photoelectric detector has the advantages of high sensitivity and high response speed, is not easily influenced by external temperature change and environmental change, and has good stability and reliability.
In some embodiments, the coating deviation correcting device further comprises a base frame and a carrier roller; the detection unit and the deviation rectifying mechanism are both arranged on the base frame; the supporting roller is arranged on the base frame and used for supporting the pole piece base material.
In the above scheme, the detection unit and the deviation rectifying mechanism are both mounted on the base frame, and the base frame plays a role in connecting the detection unit and the deviation rectifying mechanism, so that the detection unit and the deviation rectifying mechanism have a determined position relationship. In addition, the pole piece base material can be held up to the bearing roller on the bed frame, and the bearing roller plays the supporting role to the pole piece base material, has improved the stability of pole piece base material for detecting element can accurately detect the edge of pole piece base material, has improved the accuracy that detecting element detected.
In some embodiments, the idler shaft has first and second opposite ends; the coating deviation correcting device further comprises a first adjusting mechanism and a second adjusting mechanism; the first end is connected with the base frame through the first adjusting mechanism; the second end is connected with the base frame through the second adjusting mechanism; the first adjusting mechanism and the second adjusting mechanism are used for adjusting the position of the carrier roller so as to adjust the distance between the pole piece base material and the detection unit.
In the above scheme, the position of the carrier roller can be adjusted through the first adjusting mechanism and the second adjusting mechanism, so that the purpose of adjusting the distance between the pole piece base material and the detection unit is achieved, and the pole piece base material is located in the detection range of the detection unit. When the tension on the two sides of the pole piece base material in the width direction is inconsistent, the height of the first end or the second end of the carrier roller can be adjusted by independently adjusting the first adjusting mechanism or the second adjusting mechanism, so that the tension on the two sides of the pole piece base material in the width direction is kept consistent.
In some embodiments, the detection unit is adjustably disposed on the base frame along a width direction of the pole piece substrate.
In the above scheme, the position of the detection unit in the width direction of the pole piece substrate is adjustable, and when the position of the first coating area changes due to factors such as product model replacement and change of the position of the first coating mechanism, the position of the detection unit in the width direction of the pole piece substrate can be adjusted, so that the detection unit can accurately detect the position of the edge of the first coating area.
In some embodiments, the coating deviation correcting device further includes a third adjusting mechanism, the detecting unit is connected to the third adjusting mechanism, the third adjusting mechanism is adjustably disposed on the base frame along the width direction of the pole piece substrate, and the third adjusting mechanism is configured to adjust the distance between the detecting unit and the pole piece substrate and/or adjust the position of the detecting unit in the width direction of the pole piece substrate.
In the above scheme, the detection unit is connected to the third adjusting mechanism, the third adjusting mechanism is adjustably arranged on the base frame along the width direction of the pole piece base material, and the position of the detection unit in the width direction of the pole piece base material can be adjusted by adjusting the position of the third adjusting mechanism. The third adjusting mechanism has a function of adjusting the position of the detecting unit so as to adjust the distance between the detecting unit and the pole piece base material and/or adjust the position of the detecting unit in the width direction of the pole piece base material.
In some embodiments, the third adjusting mechanism is further configured to adjust a detection angle of the detection unit.
In the above scheme, the detection angle of the detection unit can be adjusted through the third adjusting mechanism, so that the detection angle of the detection unit is adjusted to a better angle, and the detection accuracy of the detection unit is improved.
In a second aspect, an embodiment of the present application provides a coating system, including a first coating mechanism, a second coating mechanism, and a coating deviation rectifying device provided in any one of embodiments of the first aspect;
the first coating mechanism is used for coating the front surface of the electrode sheet base material to form a first coating area;
the second coating mechanism is positioned at the downstream of the first coating mechanism and is used for coating the reverse side of the pole piece base material to form a second coating area;
the coating deviation correcting device is arranged between the first coating mechanism and the second coating mechanism.
In the scheme, the coating deviation correcting device in the coating system corrects the deviation by taking the first coating area of the pole piece substrate as a reference, so that the second coating mechanism can coat the position corresponding to the first coating area on the reverse side of the pole piece substrate, the offset of the second coating area relative to the first coating area can be effectively reduced, the quality of a product is improved, and the reject ratio of the product is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic view of a coating system provided in some embodiments herein;
FIG. 2 is a cross-sectional view of a pole piece substrate provided in accordance with certain embodiments of the present disclosure;
FIG. 3 is a schematic view of a coating system provided in accordance with further embodiments of the present application;
FIG. 4 is a diagram illustrating a position relationship between a coating deviation correcting device and a second coating mechanism according to some embodiments of the present disclosure;
FIG. 5 is a front view of a pole piece substrate provided in accordance with some embodiments of the present application;
FIG. 6 is a reverse side view of a pole piece substrate provided in accordance with certain embodiments of the present application;
FIG. 7 is a reverse side view of a pole piece substrate provided in accordance with further embodiments of the present application;
FIG. 8 is a control schematic diagram of a coating deviation correcting device according to an embodiment of the present disclosure;
FIG. 9 is an isometric view of the coating deviation correcting device shown in FIG. 4;
FIG. 10 is a cross-sectional view of a pole piece substrate provided in accordance with further embodiments of the present application;
FIG. 11 is an enlarged view of a portion of the coating deviation correcting device shown in FIG. 9 at A;
fig. 12 is a schematic connection diagram of a third adjustment mechanism, a base frame, and a detection unit according to some embodiments of the present disclosure.
Icon: 10-a first coating mechanism; 20-a second coating mechanism; 30-coating deviation correcting device; 31-a detection mechanism; 311-a detection unit; 32-a deviation rectifying mechanism; 321-a first rectification roller; 322-second rectification roller; 33-a controller; 34-a base frame; 35-carrying rollers; 351-a first end; 352-second end; 36-a first adjustment mechanism; 361-first connection seat; 362-second connecting seat; 3621-strip holes; 363-locking screws; 37-a second adjustment mechanism; 38-a third adjustment mechanism; 381-a first movable seat; 382-a second movable seat; 383-a third movable seat; 384-a first drive unit; 385 — a second drive unit; 386-a third drive unit; 40-an unwinding mechanism; 50-a winding mechanism; 60-a first drying device; 70-a first weight measuring system; 80-a second drying device; 90-a second weight measuring system; 100-a first roller; 110-a second roller; 120-a first deviation rectifying unit; 130-a second deviation rectifying unit; 140-a third deviation rectifying unit; 150-a fourth deviation rectifying unit; 200-a coating system; 300-pole piece substrate; 310-front side; 3101-a first coating region; 3101 a-left coated area; 3101 b-the right coated region; 320-reverse side; 3201-a second coating zone; b-width direction; x-a first direction; y-second direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments of the present application, like reference numerals denote like parts, and a detailed description of the same parts is omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the integrated device shown in the drawings are only exemplary and should not constitute any limitation to the present application.
The appearances of "a plurality" in this application are intended to mean more than two (including two).
In the embodiment of the present application, the front surface and the back surface of the pole piece substrate are two surfaces of the pole piece substrate in the thickness direction of the pole piece substrate.
In the coating system, the coating deviation correcting device is positioned between the first coating mechanism and the second coating mechanism, when the pole piece base material is coated, the first coating mechanism firstly coats the front side of the pole piece base material, and after the deviation is corrected by the coating deviation correcting device, the second coating mechanism coats the back side of the pole piece base material.
The inventor finds that the coating deviation-correcting device generally corrects the deviation of the pole piece base material by taking the pole piece base material as a reference, and if the pole piece base material deviates, the coating deviation-correcting device corrects the deviation of the pole piece base material to enable the pole piece base material to be aligned with the second coating mechanism; however, if the first coating mechanism is used for coating the pole piece base material, the center line of the coating area on the front surface of the pole piece base material deviates from the center line of the pole piece base material by a certain distance; after the coating deviation correcting device is used for correcting the deviation of the pole piece base material, the pole piece base material is centered with the second coating mechanism, and after the second coating mechanism is used for coating the back side of the pole piece base material, the central line of the coating area on the back side of the pole piece base material is basically superposed with the central line of the pole piece base material, so that the dislocation amount of the coating area on the back side of the pole piece base material relative to the coating area on the front side of the pole piece base material is large, and the product quality is not high.
In view of this, the embodiment of the present application provides a technical solution, the position of the first coating area on the front surface of the pole piece substrate is detected by the detection mechanism, and the deviation rectification mechanism responds to the detection result of the detection mechanism to adjust the relative position of the pole piece substrate and the second coating mechanism, so as to realize deviation rectification, thereby effectively reducing the offset of the second coating area relative to the first coating area, improving the quality of the product, and reducing the reject ratio of the product.
The technical solution described in the embodiment of the present application is applicable to the coating system 200. Referring to fig. 1, fig. 1 is a schematic diagram of a coating system 200 according to some embodiments of the present disclosure. The coating system 200 includes a first coating mechanism 10, a second coating mechanism 20, and a coating deviation correcting device 30.
The first coating mechanism 10 is used to coat the front surface 310 of the electrode sheet base material 300 to form a first coating region 3101 (shown in fig. 2). The second coating mechanism 20 is located downstream of the first coating mechanism 10, and the second coating mechanism 20 is used to coat the reverse surface 320 of the electrode sheet base material 300 to form a second coating region 3201 (shown in fig. 2). The coating deviation rectifying device 30 is disposed between the first coating mechanism 10 and the second coating mechanism 20, and the coating deviation rectifying device 30 rectifies the deviation based on the first coating region 3101 of the pole piece substrate 300, so as to reduce the offset of the second coating region 3201 relative to the first coating region 3101.
Referring to fig. 2, fig. 2 is a cross-sectional view of a pole piece substrate 300 according to some embodiments of the present disclosure. After pole piece substrate 300 is coated by coating system 200, front side 310 and back side 320 of pole piece substrate 300 will form first coated region 3101 and second coated region 3201, respectively. The first coating region 3101 and the second coating region 3201 are formed with an active material layer. The active material layer may be a positive electrode active material layer or a negative electrode active material layer. The positive active material layer can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate and the like; the anode active material layer may be carbon, silicon, or the like.
In the coating process, the pole piece substrate 300 passes through the first coating mechanism 10, the coating deviation rectifying device 30 and the second coating mechanism 20 in sequence. The pole piece base material 300 firstly passes through the first coating mechanism 10, the first coating mechanism 10 coats the front surface 310 of the pole piece base material 300, and a first coating area 3101 is formed in the area coated on the front surface 310 of the pole piece base material 300; the pole piece base material 300 passes through the coating deviation correcting device 30, and the coating deviation correcting device 30 corrects the deviation of the pole piece base material 300; the pole piece base material 300 passes through the second coating mechanism 20, the second coating mechanism 20 coats the reverse surface 320 of the pole piece base material 300, and a second coating area 3201 is formed in the area coated on the reverse surface 320 of the pole piece base material 300.
In some embodiments, referring to fig. 3, fig. 3 is a schematic view of a coating system 200 according to still other embodiments of the present disclosure. The coating system 200 may further include an unwinding mechanism 40, a winding mechanism 50, a first drying device 60, a first weighing system 70, a second drying device 80, and a second weighing system 90.
The unwinding mechanism 40 is used for unwinding the pole piece substrate 300, so that the pole piece substrate 300 wound on the unwinding mechanism 40 gradually exits; the winding mechanism 50 is used for winding the pole piece substrate 300, so that the pole piece substrate 300 exiting from the unwinding mechanism 40 is gradually wound on the winding mechanism 50 after being coated by the first coating mechanism 10 and the second coating mechanism 20.
Illustratively, the pole piece substrate 300 between the unwinding mechanism 40 and the winding mechanism 50 is sequentially wound around a plurality of rollers to tighten the pole piece substrate 300. Two of the plurality of rollers are located on first roller 100 and second roller 110, respectively, first roller 100 facing the reverse side 320 (shown in fig. 2) of pole piece substrate 300 and second roller 110 facing the front side 310 (shown in fig. 2) of pole piece substrate 300. The first coating mechanism 10 is adjacent to the first roller 100 and the second coating mechanism 20 is adjacent to the second roller 110.
The first drying device 60, the first weighing system 70 and the coating deviation correcting device 30 are all located between the first coating mechanism 10 and the second coating mechanism 20, the first drying device 60 is located at the downstream of the first coating mechanism 10, the first weighing system 70 is located at the downstream of the first drying device 60, and the coating deviation correcting device 30 is located at the downstream of the first weighing system 70; the second drying device 80 and the second weighing system 90 are both located between the second coating mechanism 20 and the winding mechanism 50, the second coating mechanism 20 is located at the downstream of the coating deviation correcting device 30, the second drying device 80 is located at the downstream of the second coating mechanism 20, the second weighing system 90 is located at the downstream of the second drying device 80, and the winding mechanism 50 is located at the downstream of the second weighing system 90.
The first drying device 60 is used for drying the electrode sheet base material 300 after being coated by the first coating mechanism 10; the first weight measuring system 70 is used for measuring the weight of the electrode sheet base material 300 after being dried by the first drying device 60. The second drying device 80 is used for drying the electrode sheet base material 300 coated by the second coating mechanism 20; the second weight measuring system 90 is used for measuring the weight of the electrode sheet base material 300 after being dried by the second drying device 80. For example, the first drying device 60 and the second drying device 80 may be ovens.
In some embodiments, with continued reference to fig. 3, the coating system 200 may further include a first deviation rectifying unit 120, a second deviation rectifying unit 130, a third deviation rectifying unit 140, and a fourth deviation rectifying unit 150. The pole piece substrate 300 unreeled by the unreeling mechanism 40 is sequentially wound in the reeling mechanism 50 through the first deviation rectifying unit 120, the first coating mechanism 10, the first drying device 60, the second deviation rectifying unit 130, the first weight measuring system 70, the coating deviation rectifying device 30, the second coating mechanism 20, the second drying device 80, the third deviation rectifying unit 140, the second weight measuring system 90 and the fourth deviation rectifying unit 150.
The first deviation rectifying unit 120 is configured to rectify the deviation of the electrode sheet substrate 300 after being unreeled by the unreeling mechanism 40; the second deviation rectifying unit 130 is used for rectifying deviation of the electrode sheet base material 300 after being dried by the first drying device 60; the coating deviation correcting device 30 is used for correcting the deviation of the pole piece base material 300 after the weight measurement of the first weight measurement system 70; the third deviation rectifying unit 140 is used for rectifying the deviation of the electrode sheet base material 300 after being coated by the second drying device 80; the fourth deviation rectifying unit 150 is used for rectifying the deviation of the electrode substrate 300 after the weight measurement by the second weight measuring system 90.
For example, the first deviation rectifying unit 120, the second deviation rectifying unit 130, the third deviation rectifying unit 140, and the fourth deviation rectifying unit 150 may be ultrasonic deviation rectifying units.
It should be noted that specific structures of the unwinding mechanism 40, the first deviation rectifying unit 120, the first coating mechanism 10, the first drying device 60, the second deviation rectifying unit 130, the first weight measuring system 70, the second coating mechanism 20, the second drying device 80, the third deviation rectifying unit 140, the second weight measuring system 90, the fourth deviation rectifying unit 150, and the winding mechanism 50 may refer to related technologies, and are not described herein again.
In the embodiment of the present application, the coating deviation rectifying device 30 is used to rectify the deviation of the pole piece substrate 300, so as to reduce the amount of deviation between the first coating region 3101 on the front surface 310 and the second coating region 3201 on the back surface 320 of the pole piece substrate 300. The detailed structure of the coating deviation correcting device 30 will be described in detail with reference to the accompanying drawings.
Referring to fig. 4, fig. 4 is a diagram illustrating a positional relationship between a coating deviation correcting device 30 and a second coating mechanism 20 according to some embodiments of the present disclosure. The coating deviation rectifying device 30 provided by the embodiment of the present application includes a detection mechanism 31 and a deviation rectifying mechanism 32, and the detection mechanism 31 is configured to detect the position of the first coating region 3101. The deviation correcting mechanism 32 is used for responding to the detection result of the detecting mechanism 31 to adjust the relative position of the pole piece substrate 300 and the second coating mechanism 20 so as to reduce the offset of the second coating area 3201 relative to the first coating area 3101.
The coating deviation correcting device 30 with such a structure corrects the deviation by taking the first coating area 3101 of the pole piece base material 300 as a reference, so that the second coating mechanism 20 can coat the position, corresponding to the first coating area 3101, on the reverse surface 320 of the pole piece base material 300, the offset of the second coating area 3201 relative to the first coating area 3101 can be effectively reduced, the quality of a product is improved, and the reject ratio of the product is reduced.
In the embodiment of the present application, after the pole piece substrate 300 is coated by the first coating mechanism 10 and the second coating mechanism 20, the first coating region 3101 on the front surface 310 of the pole piece substrate 300 may be one, or a plurality of regions distributed at intervals along the width direction B of the pole piece substrate 300; the second coating area 3201 on the opposite surface 320 of the pole piece substrate 300 may be one or a plurality of areas spaced apart in the width direction B of the pole piece substrate 300.
Take the first coating region 3101 on the front side 310 and the second coating region 3201 on the back side 320 of the pole piece substrate 300 as an example. If an abnormal condition (such as uneven tension, abnormal position of the first coating mechanism 10, etc.) occurs during the coating process of the pole piece substrate 300 by the first coating mechanism 10, referring to fig. 5, fig. 5 is a front view 310 of the pole piece substrate 300 according to some embodiments of the present disclosure, a center line of a coating area on the front view 310 of the pole piece substrate 300 is deviated from a center line of the pole piece substrate 300 by a certain distance. In the coating deviation rectifying device in the prior art, the pole piece substrate 300 is rectified based on the pole piece substrate 300, after the deviation rectification of the pole piece substrate 300 is performed, the pole piece substrate 300 is centered with the second coating mechanism 20, and after the second coating mechanism 20 coats the reverse side 320 of the pole piece substrate 300, please refer to fig. 6, where fig. 6 is a reverse side 320 diagram of the pole piece substrate 300 provided in some embodiments of the present application, a center line of the second coating area 3201 on the reverse side 320 of the pole piece substrate 300 is substantially overlapped with a center line of the pole piece substrate 300, so that a misalignment amount between the second coating area 3201 on the reverse side 320 of the pole piece substrate 300 and the first coating area 3101 on the front side 310 is relatively large. In the coating deviation rectifying device 30 provided in this embodiment of the present application, the position of the first coating region 3101 of the pole piece substrate 300 is detected by the detection mechanism 31, and the deviation rectifying mechanism 32 adjusts the relative position of the pole piece substrate 300 and the second coating mechanism 20 according to the detection result, please refer to fig. 7, where fig. 7 is a reverse side 320 diagram of the pole piece substrate 300 provided in some embodiments of the present application, so that the second coating mechanism 20 can coat on the reverse side 320 of the pole piece substrate 300 at a position corresponding to the first coating region 3101 (shown in fig. 5), and the offset of the second coating region 3201 relative to the first coating region 3101 is effectively reduced.
In some embodiments, please refer to fig. 8, fig. 8 is a control schematic diagram of a coating deviation rectifying device 30 according to an embodiment of the present disclosure. The coating deviation correcting device 30 further comprises a controller 33, and the detection mechanism 31 and the deviation correcting mechanism 32 are both electrically connected with the controller 33. After the detection mechanism 31 detects the position of the first coating region 3101 and acquires the position signal of the first coating region 3101, the controller 33 controls the deviation rectification mechanism 32 to operate according to the position signal acquired by the detection mechanism 31, so as to adjust the relative position of the pole piece substrate 300 and the second coating mechanism 20.
For example, the Controller 33 may be a PLC (Programmable Logic Controller), a single chip microcomputer, or the like.
In some embodiments, the detection mechanism 31 is configured to detect the position of the edge of the first coating region 3101 to obtain the position of the first coating region 3101, i.e., the detection mechanism 31 can acquire the position information of the edge of the first coating region 3101.
In this embodiment, the detection mechanism 31 may detect one edge of the first coating region 3101, or may detect both edges of the first coating region 3101.
In some embodiments, referring to fig. 9, fig. 9 is an isometric view of the coating deviation correcting device 30 shown in fig. 4. The detection mechanism 31 includes two detection units 311, and the two detection units 311 are respectively used for detecting the positions of two opposite edges of the first coating region 3101 in the width direction B of the pole piece base material 300.
By detecting the positions of the two edges of the first coated region 3101 opposing each other in the width direction B by the two detection units 311, respectively, the detection error can be reduced and the detection accuracy can be improved.
The detection unit 311 is electrically connected to the controller 33.
It should be noted that, in the case that there are a plurality of first coating regions 3101 on the front surface 310 of the pole piece base material 300, two edges detected by the two detection units 311 may be two edges of the same first coating region 3101, or two edges of two first coating regions 3101, for example, referring to fig. 10, fig. 10 is a cross-sectional view of the pole piece base material 300 provided in further embodiments of the present application, two first coating regions 3101 farthest apart in the width direction B of the pole piece base material 300 are a left coating region 3101a and a right coating region 3101B, respectively, of the two detection units 311, one detection unit 311 is used to detect a position of one edge of the left coating region 3101a apart from the right coating region 3101B, and the other detection unit 311 is used to detect a position of one edge of the right coating region 3101B apart from the left coating region 3101 a.
Illustratively, the detection unit 311 is a photodetector. The photoelectric detector has the advantages of high sensitivity and high response speed, is not easily influenced by external temperature change and environmental change, and has good stability and reliability. In other embodiments, the detecting unit 311 may have other structures, for example, the detecting unit 311 is a visual detecting camera.
In some embodiments, with continued reference to fig. 9, the coating deviation rectifying device 30 may further include a base frame 34 and a supporting roller 35, wherein the detecting unit 311 and the deviation rectifying mechanism 32 are both mounted on the base frame 34, and the supporting roller 35 is mounted on the base frame 34 for supporting the pole piece substrate 300.
The base frame 34 functions to connect the detection unit 311 and the correction mechanism 32 so that the detection unit 311 and the correction mechanism 32 have a certain positional relationship. In addition, the pole piece base material 300 can be held up by the carrier roller 35 on the base frame 34, and the carrier roller 35 plays a supporting role for the pole piece base material 300, so that the stability of the pole piece base material 300 is improved, the edge of the pole piece base material 300 can be accurately detected by the detection unit 311, and the detection accuracy of the detection unit 311 is improved.
Illustratively, the idler 35 is rotatably disposed on the base frame 34, the idler 35 is located below the detection unit 311, and the idler 35 is arranged along the width direction B of the pole piece base material 300. The two detection units 311 are spaced apart from each other along the axial direction of the carrier roller 35 and distributed on the base frame 34.
In some embodiments, the coating deviation rectification device 30 may further include a first adjustment mechanism 36 and a second adjustment mechanism 37. The idler 35 has axially opposite first and second ends 351, 352, the first end 351 being connected to the base frame 34 by a first adjustment mechanism 36, and the second end 352 being connected to the base frame 34 by a second adjustment mechanism 37. The first adjusting mechanism 36 and the second adjusting mechanism 37 are used for adjusting the position of the carrier roller 35 to adjust the distance between the pole piece base material 300 and the detection unit 311, so that the pole piece base material 300 is located in the detection range of the detection unit 311.
When the tension applied to the two sides of the pole piece base material 300 in the width direction B is not consistent, the height of the first end 351 or the second end 352 of the supporting roller 35 can be adjusted by independently adjusting the first adjusting mechanism 36 or the second adjusting mechanism 37, so that the tension applied to the two sides of the pole piece base material 300 in the width direction B is consistent.
Referring to fig. 11, fig. 11 is a partially enlarged view of a position a of the coating deviation correcting device 30 shown in fig. 9. The first adjusting mechanism 36 may include a first connecting seat 361, a second connecting seat 362 and a locking screw 363, the first connecting seat 361 is fixed to the base frame 34, the first end 351 is rotatably connected to the first connecting seat 361, the locking screw 363 is screwed to the first connecting seat 361, and the second connecting seat 362 is provided with a strip-shaped hole 3621 through which the locking screw 363 penetrates. The locking screw 363 may lock the first connection seat 361 and the second connection seat 362, so that the position of the first end 351 is fixed; when the height position of first end 351 needs to be adjusted, locking screw 363 can be unscrewed, the height position of first end 351 can be adjusted by changing the height position of second connecting seat 362, and after the height position of first end 351 is adjusted, locking screw 363 can be screwed down again, and first connecting seat 361 and second connecting seat 362 are locked.
It should be noted that the structure of the second adjusting mechanism 37 may be the same as the structure of the first adjusting mechanism 36, and the connection manner between the second adjusting mechanism 37 and the second end 352 and the base frame 34 may also be the same as the connection manner between the first adjusting mechanism 36 and the first end 351 and the base frame 34, which is not described herein again.
In some embodiments, with reference to fig. 9, the detecting unit 311 is adjustably disposed on the base frame 34 along the width direction B of the pole piece substrate 300.
The position of the detection unit 311 in the width direction B of the pole piece base material 300 is adjustable, and when the position of the first coating region 3101 changes due to factors such as product model replacement, change of the position of the first coating mechanism 10 and the like, the position of the detection unit 311 in the width direction B of the pole piece base material 300 can be adjusted, so that the detection unit 311 can accurately detect the position of the edge of the first coating region 3101.
In some embodiments, the coating deviation rectifying device 30 further includes a third adjusting mechanism 38, the detecting unit 311 is connected to the third adjusting mechanism 38, and the third adjusting mechanism 38 is adjustably disposed on the base frame 34 along the width direction B of the pole piece substrate 300. The third adjusting mechanism 38 is used for adjusting the distance between the detecting unit 311 and the pole piece base material 300, and/or the third adjusting mechanism 38 is used for adjusting the position of the detecting unit 311 in the width direction B of the pole piece base material 300.
Since the third adjusting mechanism 38 is adjustably disposed on the base frame 34 along the width direction B of the pole piece base material 300, the position of the detecting unit 311 in the width direction B of the pole piece base material 300 can be adjusted by adjusting the position of the third adjusting mechanism 38.
If the third adjusting mechanism 38 has a function of adjusting the distance between the detecting unit 311 and the pole piece base material 300, when the distance between the detecting unit 311 and the pole piece base material 300 needs to be adjusted, the height position of the carrier roller 35 can be adjusted roughly by the first adjusting mechanism 36 and the second adjusting mechanism 37, and then the position of the detecting unit 311 can be adjusted finely by the third adjusting mechanism 38, so as to realize the accurate adjustment of the distance between the detecting unit 311 and the pole piece base material 300; if the third adjustment mechanism 38 has a function of adjusting the position of the detection unit 311 in the width direction B of the pole piece base material 300, when the position of the detection unit 311 in the width direction B of the pole piece base material 300 needs to be adjusted, the position of the entire third adjustment mechanism 38 on the base frame 34 can be adjusted first to realize coarse adjustment of the position of the detection unit 311 in the width direction B of the pole piece base material 300, and then the position of the detection unit 311 in the width direction B of the pole piece base material 300 can be finely adjusted by the third adjustment mechanism 38.
In some embodiments, the third adjusting mechanism 38 is further configured to adjust the detection angle of the detecting unit 311, so as to adjust the detection angle of the detecting unit 311 to a better angle, thereby improving the detection accuracy of the detecting unit 311.
Taking as an example that the third adjusting mechanism 38 has a function of adjusting the distance between the detecting unit 311 and the pole piece base material 300, a function of adjusting the position of the detecting unit 311 in the width direction B of the pole piece base material 300, and a function of adjusting the detecting angle of the detecting unit 311, in a non-limiting example, please refer to fig. 12, and fig. 12 is a schematic connection diagram of the third adjusting mechanism 38, the base frame 34, and the detecting unit 311 provided in some embodiments of the present application. The third adjusting mechanism 38 includes a first movable seat 381, a second movable seat 382, and a third movable seat 383, the first movable seat 381 is movably disposed on the base frame 34 along the first direction X, the second movable seat 382 is rotatably connected to the first movable seat 381 around an axis arranged along the first direction X, the third movable seat 383 is movably disposed on the second movable seat 382 along the first direction X, and the detecting unit 311 is movably disposed on the third movable seat 383 along the second direction Y.
The first direction X is the same as the width direction B of the pole piece substrate 300, the second direction Y is perpendicular to the first direction X, and the second direction Y is the height direction of the base frame 34.
When the position of the detection unit 311 in the width direction B of the pole piece substrate 300 needs to be coarsely adjusted, the first movable seat 381 can move along the first direction X relative to the base frame 34; when the detection angle of the detection unit 311 needs to be adjusted, the second movable seat 382 can rotate relative to the first movable seat 381; when the position of the detection unit 311 in the width direction B of the pole piece substrate 300 needs to be finely adjusted, the third movable seat 383 can move along the first direction X relative to the second movable seat 382; when the distance between the detecting unit 311 and the pole piece base material 300 needs to be finely adjusted, the detecting unit 311 can move along the second direction Y relative to the third movable seat 383.
In some embodiments, the third adjusting mechanism 38 may further include other structures, for example, the third adjusting mechanism 38 may further include a first driving unit 384, and the first driving unit 384 is configured to drive the first movable seat 381 to move along the first direction X relative to the base frame 34; the third adjustment mechanism 38 may further include a second driving unit 385, wherein the second driving unit 385 is configured to drive the third movable seat 383 to move along the first direction X relative to the second movable seat 382; the third adjusting mechanism 38 may further include a third driving unit 386, where the third driving unit 386 is used for driving the detecting unit 311 to move along the second direction Y relative to the third movable seat 383; the third adjusting mechanism 38 may further include a locking mechanism (not shown) for locking the second movable seat 382 with the first movable seat 381 after the detection angle of the detecting unit 311 is adjusted. Illustratively, the first driving unit 384, the second driving unit 385 and the third driving unit 386 may each be a screw nut structure, and the locking mechanism may be a screw, a bolt, or the like.
In some embodiments, the detecting unit 311 may be connected to the base frame 34 through the third adjusting mechanism 38, and in other embodiments, the detecting unit 311 may also be directly fixed on the base frame 34.
In the embodiment of the application, when the deviation rectifying mechanism 32 rectifies the deviation of the pole piece substrate 300, the deviation rectifying mechanism 32 may adjust the relative position between the pole piece substrate 300 and the second coating mechanism 20, where the position of the second coating mechanism 20 may not be changed, and the deviation rectifying mechanism 32 adjusts the position of the pole piece substrate 300; or the position of the pole piece substrate 300 is not changed, and the deviation rectifying mechanism 32 adjusts the position of the second coating mechanism 20; it is also possible that the deviation correcting mechanism 32 adjusts the positions of the pole piece substrate 300 and the second coating mechanism 20 at the same time.
In some embodiments, with continued reference to fig. 9, the deviation correcting mechanism 32 is used to adjust the position of the pole piece substrate 300.
Illustratively, the deviation rectifying mechanism 32 includes a first deviation rectifying roller 321 and a second deviation rectifying roller 322, the first deviation rectifying roller 321 and the second deviation rectifying roller 322 are arranged on the base frame 34 at intervals up and down, and the first deviation rectifying roller 321 is located above the second deviation rectifying roller 322. The height positions of the two axial ends of the first rectification roller 321 are adjustable, and the height positions of the two axial ends of the second rectification roller 322 are adjustable.
With reference to fig. 4, the pole piece substrate 300 sequentially passes around the second deviation rectifying roller 322, the first deviation rectifying roller 321 and the second roller 110. When the correction of the pole piece base material 300 is needed, the angle between the second correction roller 322 and the first correction roller 321 can be adjusted to make the first correction roller 321 and the second correction roller 322 distributed in a shape of a Chinese character 'ba', so that the pole piece base material 300 moves to one side in the width direction B (not shown in fig. 4) or moves to the other side in the width direction B, and the correction of the pole piece base material 300 is realized.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The above embodiments are merely for illustrating the technical solutions of the present application and are not intended to limit the present application, and those skilled in the art can make various modifications and variations of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A coating deviation correcting device, for being arranged between a first coating mechanism and a second coating mechanism, the first coating mechanism is used for coating the front surface of a pole piece substrate to form a first coating area, the second coating mechanism is arranged at the downstream of the first coating mechanism and is used for coating the back surface of the pole piece substrate to form a second coating area, the coating deviation correcting device comprises:
a detection mechanism configured to detect a position of the first coating region; and
and the deviation rectifying mechanism is used for responding to the detection result of the detection mechanism so as to adjust the relative position of the pole piece substrate and the second coating mechanism, so that the offset of the second coating area relative to the first coating area is reduced.
2. The coating deviation correcting device of claim 1, wherein the detection mechanism is configured to detect a position of an edge of the first coating zone.
3. The coating deviation correcting device of claim 2, wherein the detection mechanism comprises two detection units, and the two detection units are respectively used for detecting the positions of two opposite edges of the first coating area in the width direction of the pole piece substrate.
4. The coating deviation correcting device of claim 3, wherein the detecting unit is a photo detector.
5. The coating deviation correcting device of claim 3, further comprising:
the detection unit and the deviation rectifying mechanism are both arranged on the base frame; and
and the supporting roller is arranged on the base frame and used for supporting the pole piece base material.
6. The coating deviation correcting device of claim 5, wherein the idler shaft has opposite first and second ends;
the coating deviation correcting device further comprises:
the first end of the first adjusting mechanism is connected with the base frame through the first adjusting mechanism; and
the second end of the second adjusting mechanism is connected with the base frame through the second adjusting mechanism;
the first adjusting mechanism and the second adjusting mechanism are used for adjusting the position of the carrier roller so as to adjust the distance between the pole piece base material and the detection unit.
7. The coating deviation correcting device of any one of claims 5 to 6, wherein the detection unit is arranged on the base frame in a position adjustable along the width direction of the pole piece substrate.
8. The coating deviation correcting device of claim 7, further comprising:
the detection unit is connected with the third adjusting mechanism, the third adjusting mechanism is arranged on the base frame along the width direction of the pole piece base material in an adjustable mode, and the third adjusting mechanism is used for adjusting the distance between the detection unit and the pole piece base material and/or adjusting the position of the detection unit in the width direction of the pole piece base material.
9. The coating deviation correcting device of claim 8, wherein the third adjusting mechanism is further configured to adjust a detection angle of the detecting unit.
10. A coating system, comprising:
the first coating mechanism is used for coating the front surface of the electrode sheet base material to form a first coating area;
the second coating mechanism is positioned at the downstream of the first coating mechanism and is used for coating the reverse side of the electrode sheet base material to form a second coating area; and
the coating deviation correcting device according to any one of claims 1 to 9, which is disposed between the first coating mechanism and the second coating mechanism.
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| CN202022892535.8U CN214243120U (en) | 2020-12-02 | 2020-12-02 | Coating deviation correcting device and coating system |
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| CN202022892535.8U CN214243120U (en) | 2020-12-02 | 2020-12-02 | Coating deviation correcting device and coating system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273341A (en) * | 2021-12-13 | 2022-04-05 | 深圳市凌云视迅科技有限责任公司 | Pole piece double-face cleaning and positioning method and device |
| CN115332478A (en) * | 2022-09-16 | 2022-11-11 | 江苏正力新能电池技术有限公司 | Pole piece, pole piece coating method and equipment |
| WO2023141971A1 (en) * | 2022-01-28 | 2023-08-03 | 宁德时代新能源科技股份有限公司 | Double-sided coating deviation rectification method and apparatus |
| CN117339842A (en) * | 2023-12-05 | 2024-01-05 | 宁德时代新能源科技股份有限公司 | Pole piece coating deviation rectifying method and system |
| CN117722955A (en) * | 2024-02-08 | 2024-03-19 | 宁德时代新能源科技股份有限公司 | Coating misalignment detection method, apparatus, computer device, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114273341A (en) * | 2021-12-13 | 2022-04-05 | 深圳市凌云视迅科技有限责任公司 | Pole piece double-face cleaning and positioning method and device |
| CN114273341B (en) * | 2021-12-13 | 2022-09-30 | 深圳市凌云视迅科技有限责任公司 | Pole piece double-face cleaning and positioning method and device |
| WO2023141971A1 (en) * | 2022-01-28 | 2023-08-03 | 宁德时代新能源科技股份有限公司 | Double-sided coating deviation rectification method and apparatus |
| US11978879B1 (en) | 2022-01-28 | 2024-05-07 | Contemporary Amperex Technology Co., Limited | Deviation-correcting method and apparatus for double-sided coating |
| CN115332478A (en) * | 2022-09-16 | 2022-11-11 | 江苏正力新能电池技术有限公司 | Pole piece, pole piece coating method and equipment |
| CN117339842A (en) * | 2023-12-05 | 2024-01-05 | 宁德时代新能源科技股份有限公司 | Pole piece coating deviation rectifying method and system |
| CN117339842B (en) * | 2023-12-05 | 2024-04-19 | 宁德时代新能源科技股份有限公司 | Pole piece coating deviation rectifying method and system |
| CN117722955A (en) * | 2024-02-08 | 2024-03-19 | 宁德时代新能源科技股份有限公司 | Coating misalignment detection method, apparatus, computer device, and storage medium |
| CN117722955B (en) * | 2024-02-08 | 2024-06-07 | 宁德时代新能源科技股份有限公司 | Coating misalignment detection method, apparatus, computer device, and storage medium |
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