Coating system

Abstract

The utility model discloses a coating system, comprising: a coating roller; a first monitoring module, arranged on opposite sides of a material belt connected to the coating roller, the first monitoring module comprising a first monitor and a second monitor, the first monitor is used to monitor one side of the material belt, the second monitor is used to monitor the other side of the material belt, and when the first monitor or the second monitor detects the gap coating on the material belt, the start signal of the coating roller is triggered. The coating system of the utility model adopts a first monitoring module capable of detecting the opposite sides of the material belt, so that no matter whether the existing double-sided gap coating process or the safety primer coating process is adopted, the coating system can monitor the gap coating on the material belt, so that the coating signal can be normally triggered.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and in particular to a coating system that is compatible with multiple coating methods. Background Art

[0002] At present, the pole piece of a lithium battery cell has an active material layer, which is generally made of lithium cobalt oxide or graphite. The active material layer is coated on a current collector by a coating device.

[0003] In the existing coating technology related to lithium batteries, gaps are provided with pre-coated gap coatings on both sides of the material strip used to form the current collector. In order to ensure that the active material is evenly coated on these gap coatings, the coating process needs to be monitored. The monitor of the existing coating system can detect the gap coating on one side of the material strip when both sides are coated with gap coatings, and can trigger a coating signal.

[0004] However, when switching to the safety primer coating process, since there is gap coating on one side of the material strip and continuous primer on the other side, when the continuous primer side of the material strip faces the monitor of the existing gap coating equipment, the monitor cannot identify the gap coating and thus cannot trigger the coating signal. Utility Model Content

[0005] The main purpose of the utility model is to provide a coating system, aiming to solve the problem that the existing gap coating equipment is not compatible with the safety primer coating process.

[0006] To achieve the above object, the utility model provides a coating system for coating active material on the surface of the current collector of the battery cell, the coating system comprising:

[0007] Coating roller;

[0008] The first monitoring module is arranged on the opposite sides of the material belt which is rotatably connected to the coating roller. The first monitoring module includes a first monitor and a second monitor. The first monitor is used to monitor one side of the material belt, and the second monitor is used to monitor the other side of the material belt. When the first monitor or the second monitor detects the gap coating on the material belt, the start signal of the coating roller is triggered.

[0009] In some embodiments, the material belt includes an upstream material belt located on one side of the coating roller and a downstream material belt located on the other side of the coating roller. The first monitoring module is located on the upstream material belt, and the coating system also includes a second monitoring module located on the downstream material belt for monitoring the gap coating on both sides of the downstream material belt.

[0010] In some embodiments, the second monitoring module includes a third monitor and a fourth monitor, the third monitor is used to monitor one side of the material strip, and the fourth monitor is used to monitor the other side of the material strip.

[0011] In some embodiments, the coating system also includes a length measuring module electrically connected to the second monitoring module, the length measuring module is located at the downstream material belt, and the length measuring module is used to measure the length of the gap coating. When the third monitor or the fourth monitor detects the gap coating on the material belt, the start signal of the length measuring module is triggered.

[0012] In some embodiments, the length measuring module includes a first length measuring sensor and a second length measuring sensor, the first length measuring sensor is electrically connected to the third monitor, the second length measuring sensor is electrically connected to the fourth monitor, the first length measuring sensor is used to measure the length of the gap paint on one side of the material strip, and the second length measuring sensor is used to measure the length of the gap paint on the other side of the material strip.

[0013] In some embodiments, the coating system also includes a piece counting module electrically connected to the second monitoring module, the piece counting module is located on the downstream material belt, and the piece counting module is used to record the amount of gap paint. When the third monitor or the fourth monitor detects the gap paint on the material belt, it also triggers the start signal of the piece counting module.

[0014] In some embodiments, the sheet counting module includes a first counting sensor and a second counting sensor, the first counting sensor is electrically connected to the third monitor, the second counting sensor is electrically connected to the fourth monitor, the first counting sensor is used to measure the amount of gap paint on one side of the material strip, and the second counting sensor is used to measure the amount of gap paint on the other side of the material strip.

[0015] In some embodiments, the coating system further includes a switching switch, which is electrically connected to the first monitor and the second monitor, and the switching switch is used to alternately open and close the first monitor and the second monitor.

[0016] In some embodiments, the switch is also electrically connected to the third monitor and the fourth monitor, and the switch is used to alternately open and close the third monitor and the fourth monitor.

[0017] In some embodiments, the coating system further includes a control device, which is electrically connected to the switching switch and is used to control the switching switch.

[0018] Compared with the prior art, the beneficial effect of the technical solution of the utility model is that the coating system adopts a first monitoring module that can detect the opposite sides of the material strip, so that no matter whether the double-sided gap coating process or the safety primer coating process is adopted, the coating system can monitor the gap coating on the material strip, thereby being able to normally trigger the start signal of the coating roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram showing an example of the use of a coating system according to an embodiment of the present utility model;

[0020] Figure 2Another example diagram of the use of the coating system of the embodiment of the utility model;

[0021] Figure 3 This is a connection diagram of a control device and a switching switch of a coating system according to an embodiment of the utility model.

[0022] Description of Figure Numbers:

[0023] Coating roller 110; first monitoring module 120; first monitor 121; second monitor 122; second monitoring module 130; third monitor 131; fourth monitor 132; control device 140; switching switch 150; piece counting module 160; first counting sensor 161; second counting sensor 162; length measuring module 170; first length measuring sensor 171; second length measuring sensor 172; material belt 180; gap coating 181; continuous primer 182.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, top, bottom, side...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0028] In addition, the descriptions involving "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0029] In view of the technical defects existing in the related art, this embodiment provides a coating system. Figure 1 and Figure 2As shown, the coating system of this embodiment includes a coating roller 110 and a first monitoring module 120. The first monitoring module 120 is arranged on opposite sides of a material belt 180 that is rotatably connected to the coating roller 110. The first monitoring module 120 includes a first monitor 121 and a second monitor 122. The first monitor 121 is used to monitor one side of the material belt 180, and the second monitor 122 is used to monitor the other side of the material belt 180. The first monitor 121 and the second monitor 122 can use optical fiber, camera, sensor and other devices according to actual needs, but are not limited to them. Among them, when the first monitor 121 or the second monitor 122 detects the gap coating 181 on the material belt 180, the start signal of the coating roller 110 is triggered. After receiving the start signal, the coating roller 110 sprays the coating to coat the active material on the gap coating 181 of the material belt 180.

[0030] Since the first monitoring module 120 can monitor the opposite sides of the material strip 180, no matter whether the existing double-sided gap coating process or the safety primer coating process is adopted, the coating system of this embodiment can monitor the gap coating 181 on the material strip 180 and trigger the start signal of the coating roller 110, so that the coating roller 110 coats the material strip 180.

[0031] Furthermore, the material belt 180 includes an upstream material belt located on one side of the coating roller 110 and a downstream material belt located on the other side of the coating roller 110. It should be noted that the upstream material belt on the side of the coating roller 110 mentioned herein means that the portion of the material belt 180 close to the coating roller 110 is defined as the upstream material belt, and the portion of the material belt 180 away from the coating roller 110 is defined as the downstream material belt. In this embodiment, Figure 1 and Figure 2 As shown, the first monitoring module 120 is located at the upstream material belt, and the coating system also includes a second monitoring module 130 located at the downstream material belt, which is used to monitor the gap coating 181 on both sides of the downstream material belt. Among them, the second monitoring module 130 includes a third monitor 131 and a fourth monitor 132, the third monitor 131 is used to monitor one side of the material belt 180, and the fourth monitor 132 is used to monitor the other side of the material belt 180. Similarly, the third monitor 131 and the fourth monitor 132 can use optical fiber, camera, sensor and other devices according to actual needs, but are not limited thereto.

[0032] Furthermore, if Figure 1 and Figure 2As shown, the coating system of this embodiment also includes a length measuring module 170 electrically connected to the second monitoring module 130. The length measuring module 170 is located on the downstream material belt, and is used to measure the length of the gap coating 181. When the third monitor 131 or the fourth monitor 132 detects the gap coating 181 on the material belt 180, the start signal of the length measuring module 170 is triggered. Among them, the length measuring module 170 includes a first length measuring sensor 171 and a second length measuring sensor 172. The first length measuring sensor 171 is electrically connected to the third monitor 131, and the second length measuring sensor 172 is electrically connected to the fourth monitor 132. The first length measuring sensor 171 is used to measure the length of the gap coating 181 on one side of the material belt 180, and the second length measuring sensor 172 is used to measure the length of the gap coating 181 on the other side of the material belt 180. When the third monitor 131 detects the gap paint 181 on one side of the material strip 180, the start signal of the length measuring module 170 is triggered to start the first length measuring sensor 171, and then the length of the gap paint 181 on one side of the material strip 180 is measured. When the fourth monitor 132 detects the gap paint 181 on the other side of the material strip 180, the start signal of the length measuring module 170 is triggered to start the second length measuring sensor 172, and then the length of the gap paint 181 on the other side of the material strip 180 is measured.

[0033] Furthermore, if Figure 1 and Figure 2 As shown, the coating system of this embodiment also includes a piece counting module 160 electrically connected to the second monitoring module 130. The piece counting module 160 is located on the downstream material belt, and is used to record the number of gap coatings 181. In this embodiment, when the third monitor 131 or the fourth monitor 132 detects the gap coatings 181 on the material belt 180, it also triggers the start signal of the piece counting module 160. Among them, the piece counting module 160 includes a first counting sensor 161 and a second counting sensor 162. The first counting sensor 161 is electrically connected to the third monitor 131, and the second counting sensor 162 is electrically connected to the fourth monitor 132. The first counting sensor 161 is used to measure the number of gap coatings 181 on one side of the material belt 180, and the second counting sensor 162 is used to measure the number of gap coatings 181 on the other side of the material belt 180. When the third monitor 131 detects the gap paint 181 on one side of the material strip 180, the start signal of the piece counting module 160 is triggered to start the first counting sensor 161, and then the number of gap paint 181 on one side of the material strip 180 is measured. When the fourth monitor 132 detects the gap paint 181 on the other side of the material strip 180, the start signal of the piece counting module 160 is triggered to start the second counting sensor 162, and then the number of gap paint 181 on the other side of the material strip 180 is measured. The coating system of this embodiment can also perform the length measurement and piece counting of the gap paint 181, thereby improving the operation function of the coating system.

[0034] Furthermore, combined with Figures 1 to 3 As shown, the coating system of this embodiment further includes a switch 150. The switch 150 is electrically connected to the first monitor 121 and the second monitor 122, and is used to alternately open and close the first monitor 121 and the second monitor 122. The switch 150 can be directly controlled manually or remotely controlled through wireless communication. This embodiment adopts the switch 150, so as to selectively open and close the first monitor 121 and the second monitor 122 according to the coating process to be performed.

[0035] For example, when conventional double-sided gap coating is performed by the coating system of this embodiment, since gap coating 181 is provided on both sides of the material strip 180, only one of the first monitor 121 and the second monitor 122 needs to be turned on to normally monitor the gap coating 181 on the material strip 180 and trigger the start signal of the coating roller 110. Since only one monitor is turned on during the coating process, the energy consumption of the coating system can be reduced.

[0036] For another example, when the coating system of this embodiment is used to apply the safety primer, the first monitor 121 or the second monitor 122 is turned on according to the specific location of the gap coating 181. If the gap coating 181 is located on one side of the material belt 180, the first monitor 121 is turned on to monitor the gap coating 181 on the material belt 180; if the gap coating 181 is located on the other side of the material belt 180, the second monitor 122 is turned on to monitor the gap coating 181 on the material belt 180.

[0037] Furthermore, if Figure 3 As shown, the switch 150 of this embodiment is also electrically connected to the third monitor 131 and the fourth monitor 132 , and the switch 150 is also used to alternately open and close the third monitor 131 and the fourth monitor 132 , thereby selectively opening and closing the third monitor 131 and the fourth monitor 132 .

[0038] For example, when the coating system of this embodiment performs conventional double-sided gap coating, since gap coating 181 is provided on both sides of the material strip 180, only one of the third monitor 131 and the fourth monitor 132 needs to be turned on to normally monitor the gap coating 181 on the material strip 180 and trigger the start signal of the piece counting module 160 and the length measuring module 170. Since only one monitor is turned on during the coating process, the energy consumption of the coating system can be reduced.

[0039] For another example, when the coating system of this embodiment performs safety primer coating, the third monitor 131 or the fourth monitor 132 is turned on according to the specific setting position of the gap coating 181. If the gap coating 181 is set on one side of the material belt 180, the third monitor 131 is turned on to monitor the gap coating 181 on the material belt 180; if the gap coating 181 is set on the other side of the material belt 180, the fourth monitor 132 is turned on to monitor the gap coating 181 on the material belt 180, and the start signal of the piece counting module 160 and the length measuring module 170 is triggered.

[0040] Furthermore, if Figure 3 As shown, the coating system of this embodiment further includes a control device 140, and the control device 140 is electrically connected to the switch 150. The staff can input instructions through the control device 140 to control the switch 150. Optionally, the control device 140 can be a touch operation panel, a tablet computer, a personal computer and other devices.

[0041] For example, the instruction input by the staff to the control device 140 may be "execute conventional gap coating". At this time, since gap coating 181 is provided on both sides of the material belt 180 under conventional gap coating, it is not necessary to start all the monitors. Therefore, only the monitors (such as the first monitor 121 and the third monitor 131) monitoring one side of the material belt need to be turned on to trigger the start signal of the coating roller 110, the sheet counting module 160 and the length measuring module 170.

[0042] Of course, the instruction inputted by the staff to the control device 140 can also be "execute safety primer gap coating". At this time, since the gap coating 181 is provided on one side of the material strip 180 and the continuous primer 182 is provided on the other side during the safety primer gap coating, the start signal of the coating roller 110, the film counting module 160 and the length measuring module 170 can be triggered by simply turning on the monitors (e.g., the third monitor 131 and the fourth monitor 132) on the side monitoring the gap coating 181.

[0043] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A coating system for coating active material on the surface of a current collector of a battery cell, characterized in that: include: Coating roller; The first monitoring module is arranged on opposite sides of the material belt which is rotatably connected to the coating roller. The first monitoring module includes a first monitor and a second monitor. The first monitor is used to monitor one side of the material belt, and the second monitor is used to monitor the other side of the material belt. When the first monitor or the second monitor detects the gap coating on the material belt, the start signal of the coating roller is triggered.

2. The coating system according to claim 1, characterized in that: The material belt includes an upstream material belt located on one side of the coating roller and a downstream material belt located on the other side of the coating roller. The first monitoring module is located on the upstream material belt. The coating system also includes a second monitoring module located on the downstream material belt, which is used to monitor the gap coating on both sides of the downstream material belt.

3. The coating system according to claim 2, characterized in that: The second monitoring module includes a third monitor and a fourth monitor, wherein the third monitor is used to monitor one side of the material strip, and the fourth monitor is used to monitor the other side of the material strip.

4. The coating system according to claim 3, characterized in that: The coating system also includes a length measuring module electrically connected to the second monitoring module, the length measuring module is located at the downstream material belt, and the length measuring module is used to measure the length of the gap coating. When the third monitor or the fourth monitor detects the gap coating on the material belt, the start signal of the length measuring module is triggered.

5. The coating system according to claim 4, characterized in that: The length measuring module includes a first length measuring sensor and a second length measuring sensor, the first length measuring sensor is electrically connected to the third monitor, the second length measuring sensor is electrically connected to the fourth monitor, the first length measuring sensor is used to measure the length of the gap paint on one side of the material strip, and the second length measuring sensor is used to measure the length of the gap paint on the other side of the material strip.

6. The coating system according to claim 5, characterized in that: The coating system also includes a piece counting module electrically connected to the second monitoring module, the piece counting module is located at the downstream material belt, and the piece counting module is used to record the amount of the gap paint. When the third monitor or the fourth monitor detects the gap paint on the material belt, it also triggers the start signal of the piece counting module.

7. The coating system according to claim 6, characterized in that: The sheet counting module includes a first counting sensor and a second counting sensor, the first counting sensor is electrically connected to the third monitor, the second counting sensor is electrically connected to the fourth monitor, the first counting sensor is used to measure the amount of gap paint on one side of the material strip, and the second counting sensor is used to measure the amount of gap paint on the other side of the material strip.

8. The coating system according to claim 7, characterized in that: The coating system further includes a switching switch, which is electrically connected to the first monitor and the second monitor, and is used to alternately open and close the first monitor and the second monitor.

9. The coating system according to claim 8, characterized in that: The switching switch is also electrically connected to the third monitor and the fourth monitor, and the switching switch is used to alternately open and close the third monitor and the fourth monitor.

10. The coating system according to claim 9, characterized in that: The coating system further includes a control device, which is electrically connected to the switching switch and is used to control the switching switch.

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