Electrode plate gluing device and gluing method thereof

Abstract

The invention discloses an electrode plate gluing device and a gluing method thereof.The electrode plate gluing device comprises a first passing roller assembly, a gluing scraper roller assembly, a second passing roller assembly and a third passing roller assembly, and the gluing scraper roller assembly and the second passing roller assembly are located between the first passing roller assembly and the third passing roller assembly correspondingly; the gluing scraper roller assembly and the second roller passing assembly are arranged on the two sides of the electrode plate in a staggered mode. The electrode plate gluing device further comprises a first power structure and / or a second power structure, and the first power structure is connected with the gluing scraper roller assembly and can drive the gluing scraper roller assembly to be away from or close to the electrode plate. And the second power structure is connected with the second passing roller assembly and can drive the second passing roller assembly to drive the electrode plate to be away from or close to the gluing scraper roller assembly. According to the technical scheme, interval coating of glue materials on the electrode plates can be achieved, the problem that the glue amount is too large or the gluing area is too large after the electrode plates are glued is solved, and therefore the stability of product performance is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of lithium battery production, and particularly relates to an electrode sheet gluing device and a gluing method thereof. Background Art

[0002] In the lithium battery production process, there is a gluing process for electrode sheets, that is, in the process of manufacturing lithium batteries, a gluing device for electrode sheets is used to evenly apply a glue material onto the electrode sheets of the battery to achieve the assembly and encapsulation of the battery. Most of the existing electrode sheet gluing devices use a continuous coating method to evenly apply the glue material onto the electrode sheets of the battery. However, it is found in actual use that this continuous coating method is prone to problems such as excessive glue amount or too large a gluing area after gluing the electrode sheets, seriously affecting the stability of product performance. Summary of the Invention

[0003] The embodiments of this application provide an electrode sheet gluing device and a gluing method thereof, aiming to solve the technical problem that the existing electrode sheet gluing device using the continuous coating method is prone to problems such as excessive glue amount or too large a gluing area after gluing the electrode sheets, seriously affecting the stability of product performance.

[0004] To this end, the first aspect of the embodiments of this application provides an electrode sheet gluing device,

[0005] including a first over-roller assembly, a gluing scraper roller assembly, a second over-roller assembly, and a third over-roller assembly. The gluing scraper roller assembly and the second over-roller assembly are respectively located between the first over-roller assembly and the third over-roller assembly, and the gluing scraper roller assembly and the second over-roller assembly are staggered on both sides of the electrode sheet;

[0006] It further includes a first power structure and / or a second power structure. The first power structure is connected to the gluing scraper roller assembly and can drive the gluing scraper roller assembly to move away from or close to the electrode sheet; the second power structure is connected to the second over-roller assembly and can drive the second over-roller assembly to drive the electrode sheet to move away from or close to the gluing scraper roller assembly.

[0007] Optionally, in some embodiments, the first over-roller assembly includes a first over-roller bracket and a first over-roller rotatably arranged on the first over-roller bracket;

[0008] The second over-roller assembly includes a second over-roller bracket and a second over-roller rotatably arranged on the second over-roller bracket;

[0009] The third over-roller assembly includes a third over-roller bracket and a third over-roller rotatably arranged on the third over-roller bracket;

[0010] After the electrode sheet is discharged, it flows onto the roller surface of the first idler roller and into the electrode sheet gluing device, and then flows out of the electrode sheet gluing device through the roller surface of the third idler roller.

[0011] Optionally, in some embodiments, an anti-sticking coating is provided on the roller surface of the first idler roller; and / or, an anti-sticking coating is provided on the roller surface of the second idler roller; and / or,

[0012] an anti-sticking coating is provided on the roller surface of the third idler roller.

[0013] Optionally, in some embodiments, the glue scraping roller assembly includes a scraping blade, a glue application roller bracket, a glue application roller rotatably provided on the glue application roller bracket, and a third motor for driving the rotation of the glue application roller. The scraping blade is provided on the roller surface of the glue application roller and extends along the extension direction of the glue application roller.

[0014] Optionally, in some embodiments, the first power structure includes a first moving seat and a first power component for driving the linear movement of the first moving seat. The glue scraping roller assembly is installed on the first moving seat so that when the first power component drives the linear movement of the first moving seat, the glue scraping roller assembly is driven to move away from or close to the electrode sheet.

[0015] Optionally, in some embodiments, the second power structure includes a second moving seat and a second power component for driving the linear movement of the second moving seat. The second idler roller assembly is installed on the second moving seat so that when the second power component drives the linear movement of the second moving seat, the electrode sheet is driven to move away from or close to the glue scraping roller assembly through the second idler roller assembly.

[0016] In addition, an embodiment of the second aspect of the present application provides a gluing method applied to the above-mentioned electrode sheet gluing device. The gluing method includes the following steps:

[0017] Start the glue scraping roller assembly so that the glue application roller of the glue scraping roller assembly rotates at a first linear speed, and start an external electrode sheet transmission mechanism so that the electrode sheet flows between the first idler roller of the first idler roller assembly and the third idler roller of the third idler roller assembly at a second linear speed;

[0018] Drive the glue scraping roller assembly to move linearly through the first power structure so that the glue scraping roller assembly periodically contacts the electrode sheet to perform a gluing operation on the electrode sheet, so as to realize the intermittent coating of the glue on the electrode sheet.

[0019] Optionally, in some embodiments, the step of driving the glue - applying scraper roller assembly to move linearly by the first power structure, so that the glue - applying scraper roller assembly periodically contacts the electrode sheet to perform a glue - applying operation on the electrode sheet specifically includes:

[0020] Divide each glue - applying interval period into a first time period, a second time period, and a third time period in sequence;

[0021] In the first time period, drive the glue - applying scraper roller assembly to move linearly by the first power structure, so that the glue - applying scraper roller assembly moves from an initial position away from the electrode sheet to a first contact position where it initially contacts the electrode sheet;

[0022] In the second time period, perform a glue - applying operation on the contacted electrode sheet by the glue - applying scraper roller assembly, and drive the glue - applying scraper roller assembly to move linearly back and forth by the first power structure, so that the glue - applying scraper roller assembly moves from the first contact position to a second contact position where it is in full contact with the electrode sheet and then moves back to the first contact position;

[0023] In the third time period, drive the glue - applying scraper roller assembly to move linearly by the first power structure, so that the glue - applying scraper roller assembly moves back from the first contact position to the initial position.

[0024] In addition, an embodiment of the third aspect of the present application provides a glue - applying method, which is applied to the above - mentioned electrode - sheet glue - applying device. The glue - applying method includes the following steps:

[0025] Start the glue - applying scraper roller assembly, so that the glue - applying roller of the glue - applying scraper roller assembly rotates at a first linear speed, and start an external electrode - sheet transmission mechanism, so that the electrode sheet flows between the first idler roller of the first idler - roller assembly and the third idler roller of the third idler - roller assembly at a second linear speed;

[0026] Drive the second idler - roller assembly to move linearly by the second power structure, so that the electrode sheet periodically contacts the glue - applying scraper roller assembly to perform a glue - applying operation on the electrode sheet, so as to realize the intermittent coating of the glue on the electrode sheet.

[0027] Optionally, in some embodiments, the step of driving the second idler - roller assembly to move linearly by the second power structure, so that the electrode sheet periodically contacts the glue - applying scraper roller assembly to perform a glue - applying operation on the electrode sheet specifically includes:

[0028] Divide each glue - applying interval period into a first time period, a second time period, and a third time period in sequence;

[0029] In the first time period, the second over-roller assembly is driven by the second power structure to perform a linear motion, so that the electrode sheet moves from an initial position away from the glue-spreading doctor roller assembly to a first contact position where it initially contacts the glue-spreading doctor roller assembly;

[0030] In the second time period, the electrode sheet in contact is subjected to a glue-spreading operation by the glue-spreading doctor roller assembly, and the second over-roller assembly is driven by the second power structure to perform a linear reciprocating motion, so that the electrode sheet moves from the first contact position to a second contact position where it is in full contact with the glue-spreading doctor roller assembly and then moves back to the first contact position;

[0031] In the third time period, the second over-roller assembly is driven by the second power structure to perform a linear motion, so that the electrode sheet moves back from the first contact position to the initial position.

[0032] In the technical solution of the present application, in the electrode sheet glue-spreading device, it includes a first over-roller assembly, a glue-spreading doctor roller assembly, a second over-roller assembly and a third over-roller assembly. The glue-spreading doctor roller assembly and the second over-roller assembly are respectively located between the first over-roller assembly and the third over-roller assembly, and the glue-spreading doctor roller assembly and the second over-roller assembly are staggeredly arranged on both sides of the electrode sheet; it also includes a first power structure and / or a second power structure. The first power structure is connected to the glue-spreading doctor roller assembly and can drive the glue-spreading doctor roller assembly to move away from or close to the electrode sheet; the second power structure is connected to the second over-roller assembly and can drive the second over-roller assembly to drive the electrode sheet to move away from or close to the glue-spreading doctor roller assembly. In this way, the linear motion of the glue-spreading doctor roller assembly can be controlled by the first power structure and / or the linear motion of the second over-roller assembly can be controlled by the second power structure, so that the distance between the glue-spreading doctor roller assembly and the electrode sheet can be changed during the process of the glue-spreading doctor roller assembly performing a glue-spreading operation on the electrode sheet, and thus the intermittent coating of the glue on the electrode sheet can be realized to avoid the problems of excessive glue amount or too large glue-spreading area after the electrode sheet is glue-spread, thereby ensuring the stability of the product performance. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0034] Figure 1 It is a schematic structural diagram of the electrode sheet glue-spreading device according to the embodiment of the present application;

[0035] Figure 2 isFigure 1 Structural schematic diagram of the electrode sheet gluing device from another angle as shown;

[0036] Figure 3 The first flow chart of the gluing method according to the embodiment of the present application;

[0037] Figure 4 For Figure 3 Flow chart of step S120 of the gluing method as shown;

[0038] Figure 5 For Figure 3 Schematic diagram of the movement principle of the gluing method as shown;

[0039] Figure 6 The second flow chart of the gluing method according to the embodiment of the present application;

[0040] Figure 7 For Figure 6 Flow chart of step S220 of the gluing method as shown;

[0041] Figure 8 For Figure 6 Schematic diagram of the movement principle of the gluing method as shown.

[0042] Explanation of the reference numerals in the drawings:

[0043] 100, Electrode sheet gluing device; 110, First over-roller assembly; 111, First over-roller bracket; 112, First over-roller; 120, Gluing scraper roller assembly; 121, Gluing roller bracket; 122, Gluing roller; 123, Third motor; 130, Second over-roller assembly; 131, Second over-roller bracket; 132, Second over-roller; 140, Third over-roller assembly; 141, Second over-roller bracket; 142, Second over-roller; 151, First power structure; 152, Second power structure; 200, Electrode sheet.

[0044] The realization, functional features and advantages of the purpose of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0046] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0047] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0048] In one embodiment, as Figure 1 shown, the embodiment of the present application provides an electrode sheet gluing device 100, which includes a first over-roller assembly 110, a gluing scraper roller assembly 120, a second over-roller assembly 130, and a third over-roller assembly 140. The gluing scraper roller assembly 120 and the second over-roller assembly 130 are respectively located between the first over-roller assembly 110 and the third over-roller assembly 140, and the gluing scraper roller assembly 120 and the second over-roller assembly 130 are staggeredly arranged on both sides of the electrode sheet 200. The electrode sheet gluing device 100 further includes a first power structure 151 and / or a second power structure 152. The first power structure 151 is connected to the gluing scraper roller assembly 120 and can drive the gluing scraper roller assembly 120 to move away from or close to the electrode sheet 200. The second power structure 152 is connected to the second over-roller assembly 130 and can drive the second over-roller assembly 130 to drive the electrode sheet 200 to move away from or close to the gluing scraper roller assembly 120.

[0049] It can be understood that the electrode sheet gluing device 100 in the embodiment of the present application mainly coats the glue evenly on the electrode sheet of the battery through the gluing scraper roller assembly 120. Therefore, its general structure can be similar to that of the existing electrode sheet gluing device. The main difference is that the electrode sheet gluing device 100 in the embodiment of the present application is provided with a first power structure 151 and / or a second power structure 152, and the first power structure 151 is drivingly connected to the gluing scraper roller assembly 120, so that the gluing scraper roller assembly 120 can perform linear motion to move away from or close to the electrode sheet 200, and / or the second power structure 152 is drivingly connected to the second over-roller assembly 130, so that the second over-roller assembly 130 can perform linear motion to drive the electrode sheet 200 to move away from or close to the gluing scraper roller assembly 120.

[0050] In addition, the glue applying scraper roller assembly 120 and the second over-roller assembly 130 being staggeredly arranged on both sides of the electrode sheet 200 can be that the glue applying scraper roller assembly 120 and the second over-roller assembly 130 are arbitrarily staggeredly arranged on both sides of the electrode sheet 200, without being limited by the position settings of the first over-roller assembly 110 and the second over-roller assembly 140. It can also be limited by the position settings of the first over-roller assembly 110 and the second over-roller assembly 140, such that one of the first over-roller assembly 110, the glue applying scraper roller assembly 120, and the second over-roller assembly 130, the other of the glue applying scraper roller assembly 120 and the second over-roller assembly 130, and the third over-roller assembly 140 are staggeredly arranged on both sides of the electrode sheet 200 in sequence along their arrangement direction.

[0051] One of the aforementioned first over-roller assembly 110, glue applying scraper roller assembly 120, and second over-roller assembly 130, the other of the glue applying scraper roller assembly 120 and the second over-roller assembly 130, and the third over-roller assembly 140 being staggeredly arranged on both sides of the electrode sheet 200 in sequence along their arrangement direction can specifically be that, as shown in Figure 1 When the first over-roller assembly 110, glue applying scraper roller assembly 120, second over-roller assembly 130, and third over-roller assembly 140 are arranged in sequence from top to bottom, if the first over-roller assembly 110 is located on the left side of the electrode sheet 200, then the immediately following glue applying scraper roller assembly 120 is located on the right side of the electrode sheet 200, the second over-roller assembly 130 is located on the left side of the electrode sheet 200, and the third over-roller assembly 140 is located on the right side of the electrode sheet 200. In this way, through such an arrangement layout, when the glue applying scraper roller assembly 120 moves close to the electrode sheet 200, the problem that the glue applying scraper roller assembly 120 takes the electrode sheet 200 away from the third over-roller assembly 140 can be avoided through the limitation of the second over-roller assembly 130, or when the electrode sheet 200 moves close to the glue applying scraper roller assembly 120 under the action of the second over-roller assembly 130, the problem that the second over-roller assembly 130 takes the electrode sheet 200 away from the first over-roller assembly 110 can be avoided through the limitation of the glue applying scraper roller assembly 120. For those skilled in the art, one of the aforementioned first over-roller assembly 110, glue applying scraper roller assembly 120, and second over-roller assembly 130, the other of the glue applying scraper roller assembly 120 and the second over-roller assembly 130, and the third over-roller assembly 140 being staggeredly arranged on both sides of the electrode sheet 200 in sequence along their arrangement direction can specifically also be that, when the first over-roller assembly 110, second over-roller assembly 130, glue applying scraper roller assembly 120, and third over-roller assembly 140 are arranged in sequence from top to bottom, if the first over-roller assembly 110 is located on the left side of the electrode sheet 200, then the immediately following second over-roller assembly 130 is located on the right side of the electrode sheet 200, the glue applying scraper roller assembly 120 is located on the left side of the electrode sheet 200, and the third over-roller assembly 140 is located on the right side of the electrode sheet 200.

[0052] In this way, for the electrode sheet gluing device 100 provided by the embodiments of the present application, the glue scraping roller assembly 120 can be controlled by the first power structure 151 to perform linear motion and / or the second power structure 152 can control the second over-roller assembly 130 to perform linear motion, so that the distance between the glue scraping roller assembly 120 and the electrode sheet 200 can be changed during the process of the glue scraping roller assembly 120 gluing the electrode sheet 200, thereby realizing the intermittent coating of the glue on the electrode sheet 200 to avoid the problems of excessive glue amount or too large gluing area after the electrode sheet 200 is glued, thus ensuring the stability of the product performance.

[0053] In some examples, such as Figure 1 and Figure 2 shown, the first over-roller assembly 110 includes a first over-roller bracket 111 and a first over-roller 112 rotatably arranged on the first over-roller bracket 111. The second over-roller assembly 130 includes a second over-roller bracket 131 and a second over-roller 132 rotatably arranged on the second over-roller bracket 131. The third over-roller assembly 140 includes a third over-roller bracket 141 and a third over-roller 142 rotatably arranged on the third over-roller bracket 141. After the electrode sheet 200 is discharged, it flows into the electrode sheet gluing device 100 through the roller surface of the first over-roller 112 and then flows out of the electrode sheet gluing device 100 through the roller surface of the third over-roller 142. In this way, through the above structural arrangement, after the electrode sheet 200 is discharged by an external electrode sheet transmission mechanism (not shown) and flows into the present electrode sheet gluing device 100, it can be supported and follow-moved by the first over-roller 112, the second over-roller 132 and the third over-roller 142 respectively, so that the electrode sheet 200 flows and is transmitted along a preset direction. Further, an anti-sticking coating is provided on the roller surface of the first over-roller 112; and / or an anti-sticking coating is provided on the roller surface of the second over-roller 132; and / or an anti-sticking coating is provided on the roller surface of the third over-roller 142. In this way, through the setting of the anti-sticking coating, the phenomenon of the electrode sheet 200 sticking to the roller surface of the first over-roller 112 and / or the roller surface of the second over-roller 132 and / or the roller surface of the third over-roller 142 can be avoided, resulting in poor final gluing quality.

[0054] In some examples, such as Figure 1 and Figure 2 shown, the glue scraping roller assembly 120 may specifically include a scraping blade (not shown), a glue coating roller bracket 121, a glue coating roller 122 rotatably arranged on the glue coating roller bracket 121, and a third motor 123 for driving the glue coating roller 122 to rotate. The scraping blade is arranged on the roller surface of the glue coating roller 122 and extends along the extending direction of the glue coating roller 122. In this way, through the above structural arrangement, when the third motor 123 drives the glue coating roller to rotate, the scraping blade can be driven to rotate, and then the glue can be evenly scraped onto the surface of the electrode sheet 200.

[0055] In some examples, such as Figure 1 and Figure 2 shown, the first power structure 151 may specifically include a first moving seat and a first power component for driving the first moving seat to move linearly. The glue scraping knife roller assembly 120 is arranged on the first moving seat so that when the first power component drives the first moving seat to move linearly, it drives the glue scraping knife roller assembly 120 to move away from or close to the electrode sheet 200.

[0056] In some examples, such as Figure 1 and Figure 2 shown, the second power structure 152 may specifically include a second moving seat and a second power component for driving the second moving seat to move linearly. The second idler roller assembly 130 is arranged on the second moving seat so that when the second power component drives the second moving seat to move linearly, it drives the electrode sheet 200 to move away from or close to the glue scraping knife roller assembly 120 through the second idler roller assembly 130.

[0057] In one embodiment, such as Figure 3 shown, the embodiment of the present application further provides a gluing method. This gluing method can be specifically applied to the electrode sheet gluing device 100 in the above embodiment. This gluing method may specifically include the following steps:

[0058] Step S110: Start the glue scraping knife roller assembly so that the glue roller of the glue scraping knife roller assembly rotates at a first linear speed, and start the external electrode sheet transmission mechanism so that the electrode sheet flows between the first idler roller of the first idler roller assembly and the third idler roller of the third idler roller assembly at a second linear speed.

[0059] It can be understood that, such as Figure 1As shown, when performing the gluing operation on the electrode sheet 200 by means of the electrode sheet gluing device 100 according to the embodiments of the present application, on the one hand, it is necessary to first start the glue scraping roller assembly 120 of the electrode sheet gluing device 100 so that the glue roller of the glue scraping roller assembly 120 rotates at a first linear speed. On the other hand, it is necessary to start an external electrode sheet transmission mechanism so that the electrode sheet 200 flows between the first roller 112 of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 at a second linear speed. That is, when the electrode sheet gluing device 100 is just started, the gluing operation on the electrode sheet 200 is not performed temporarily. At this time, a certain distance is maintained between the glue scraping roller assembly 120 and the electrode sheet 200. First, wait until the glue scraping roller assembly 120, the first roller assembly 110, and the third roller assembly 140 are each operating stably (that is, the rotation speed of the glue roller of the glue scraping roller assembly 120 reaches the first linear speed, and the electrode sheet 200 flows between the first roller 112 of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 at a stable second linear speed under the transmission of the external electrode sheet transmission mechanism, so that the rotation speed of the first roller of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 following the rotation of the electrode sheet 200 reaches the second linear speed), and then start the gluing operation on the electrode sheet 200.

[0060] Step S120: Drive the glue scraping roller assembly of the electrode sheet gluing device to move linearly through the first power structure, so that the glue scraping roller assembly periodically contacts the electrode sheet to perform the gluing operation on the electrode sheet, so as to realize the intermittent coating of the glue on the electrode sheet.

[0061] It can be understood that when the glue scraping roller assembly 120, the first roller assembly 110, and the third roller assembly 140 are each operating stably through the above method steps, the gluing operation on the electrode sheet 200 can be started. At this time, the glue scraping roller assembly 120 can be driven to move linearly through the first power structure 151, so that the glue scraping roller assembly 120 Figure 5 contacts the electrode sheet 200 periodically as shown to perform the gluing operation on the electrode sheet 200, so as to realize the intermittent coating of the glue on the electrode sheet 200. That is, the glue scraping roller assembly 120 will contact the electrode sheet 200 to perform the gluing operation on the electrode sheet 200 only at intervals of a specific time, and will maintain a certain distance from the electrode sheet 200 during the remaining time, thereby realizing the intermittent coating of the glue on the electrode sheet 200.

[0062] In this way, in the coating method of the electrode sheet coating device 100 provided by the embodiments of the present application, the first power structure 151 can be used to control the glue coating scraper roller assembly 120 to perform a linear motion, so that the distance between the glue coating scraper roller assembly 120 and the electrode sheet 200 can be changed during the process of the glue coating scraper roller assembly 120 performing the glue coating operation on the electrode sheet 200, that is, the glue coating scraper roller assembly 120 either contacts the electrode sheet 200 to perform the glue coating operation on the electrode sheet 200, or moves away from the electrode sheet 200 to stop the glue coating operation on the electrode sheet 200. Furthermore, the intermittent coating of the glue on the electrode sheet 200 can be realized to avoid the problems of excessive glue amount or too large glue coating area after the electrode sheet 200 is coated with glue, thereby ensuring the stability of the product performance.

[0063] In some examples, such as Figure 1 and Figure 2 As shown, the electrode sheet coating device 100 can simultaneously include a first power structure 151 and a second power structure 152. The first power structure 151 drives the glue coating scraper roller assembly 120 to move linearly, so that the glue coating scraper roller assembly 120 moves away from or close to the electrode sheet 200. When the second power structure 152 drives the second over-roller assembly 130 to move linearly, the electrode sheet 200 is driven to move away from or close to the glue coating scraper roller assembly 120 through the second over-roller assembly 130. At this time, before the glue coating operation of the electrode sheet 200 is performed in the electrode sheet coating device 100 in this example, the glue coating scraper roller assembly 120 and the second over-roller assembly 130 can be made to be in the Figure 5 original position farthest from the electrode sheet 200 shown on the far right in the figure. When the glue coating roller 122 of the glue coating scraper roller assembly 120 is started to rotate at a first linear speed, the first power structure 151 and the second power structure 152 respectively drive the glue coating scraper roller assembly 120 and the second over-roller assembly 130 to move linearly to approach the electrode sheet 200, so that both the glue coating scraper roller assembly 120 and the second over-roller assembly 130 are in the Figure 5 initial position away from the electrode sheet 200 shown on the far left in the figure. Then, the external electrode sheet transmission mechanism is started, so that the electrode sheet flows between the first over-roller of the first over-roller assembly and the third over-roller of the third over-roller assembly at a second linear speed. When the entire glue coating cycle ends, that is, after the glue coating operation of the current electrode sheet 200 is completed, the first power structure 151 and the second power structure 152 will again drive the glue coating scraper roller assembly 120 and the second over-roller assembly 130 to move linearly to move away from the electrode sheet 200, so that both the glue coating scraper roller assembly 120 and the second over-roller assembly 130 are in the Figure 5 original position away from the electrode sheet 200 shown on the far right in the figure, and wait for the next trigger (that is, start the glue coating cycle of the next electrode sheet 200).

[0064] In some examples, such asFigure 4 As shown in Figure 4 , the specific process of performing the above method steps "driving the glue - spreading blade roller assembly to move linearly through the first power structure, so that the glue - spreading blade roller assembly periodically contacts the electrode sheet to perform glue - spreading operation on the electrode sheet" is as follows:

[0065] Step S121: Divide each glue - spreading interval period into a first time period, a second time period, and a third time period in sequence.

[0066] Step S122: In the first time period, drive the glue - spreading blade roller assembly to move linearly through the first power structure, so that the glue - spreading blade roller assembly moves from the initial position away from the electrode sheet to the first contact position where it initially contacts the electrode sheet.

[0067] Step S123: In the second time period, perform glue - spreading operation on the contacted electrode sheet through the glue - spreading blade roller assembly, and drive the glue - spreading blade roller assembly to move linearly back and forth through the first power structure, so that the glue - spreading blade roller assembly moves from the first contact position to the second contact position where it is in full contact with the electrode sheet and then moves back to the first contact position.

[0068] Step S124: In the third time period, drive the glue - spreading blade roller assembly to move linearly through the first power structure, so that the glue - spreading blade roller assembly moves back from the first contact position to the initial position.

[0069] In this way, through the above - mentioned method steps, in each glue - spreading interval period, the glue - spreading blade roller assembly 120 will only contact the electrode sheet 200 in the second time period to perform glue - spreading operation on the contacted electrode sheet 200, and in other time periods (including the first time period and the third time period), since the glue - spreading blade roller assembly 120 does not contact the electrode sheet 200, the electrode sheet 200 cannot be glue - spread. Thus, by repeating the above - mentioned method steps cyclically in each glue - spreading interval period, the intermittent coating of the glue on the electrode sheet 200 can be realized, so as to avoid the problems of excessive glue amount or too large glue - spreading area after the electrode sheet 200 is glue - spread, thereby ensuring the stability of product performance.

[0070] In one embodiment, as Figure 5 shown, the embodiment of the present application also provides a glue - spreading method, which can be specifically applied to the electrode - sheet glue - spreading device 100 in the above - mentioned embodiment. The glue - spreading method specifically includes the following steps:

[0071] Step S210: Start the glue - spreading blade roller assembly, so that the glue - spreading roller of the glue - spreading blade roller assembly rotates at a first linear speed, and start the external electrode - sheet transmission mechanism, so that the electrode sheet flows between the first idler roller of the first idler - roller assembly and the third idler roller of the third idler - roller assembly at a second linear speed.

[0072] It can be understood that, as Figure 1 shown, when performing the gluing operation on the electrode sheet 200 by the electrode sheet gluing device 100 according to the embodiments of the present application, on the one hand, it is necessary to first start the gluing scraper roller assembly 120 so that the gluing roller of the gluing scraper roller assembly 120 rotates at a first linear speed, and on the other hand, it is necessary to start an external electrode sheet transmission mechanism so that the electrode sheet 200 flows between the first roller 112 of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 at a second linear speed. That is, when the electrode sheet gluing device 100 is just started, the gluing operation of the electrode sheet 200 is not performed temporarily. At this time, there is a certain distance between the gluing scraper roller assembly 120 and the electrode sheet 200. First, wait until the gluing scraper roller assembly 120, the first roller assembly 110, and the third roller assembly 140 are respectively operating stably (that is, the rotation speed of the gluing roller of the gluing scraper roller assembly 120 reaches the first linear speed, and the electrode sheet 200 flows between the first roller 112 of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 at a stable second linear speed under the transmission of the external electrode sheet transmission mechanism, so that the rotation speed of the first roller of the first roller assembly 110 and the third roller 142 of the third roller assembly 140 following the rotation of the electrode sheet 200 reaches the second linear speed), and then start the gluing operation of the electrode sheet 200.

[0073] Step S220: Drive the second roller assembly to move linearly through the second power structure, so that the electrode sheet periodically contacts the gluing scraper roller assembly to perform the gluing operation on the electrode sheet, so as to realize the intermittent coating of the adhesive on the electrode sheet.

[0074] It can be understood that when the gluing scraper roller assembly 120, the first roller assembly 110, and the third roller assembly 140 are respectively operating stably through the above method steps, the gluing operation of the electrode sheet 200 can be started. At this time, the second roller assembly 130 can be driven to move linearly through the second power structure 152, so that the electrode sheet 200 is like Figure 8 shown, periodically contact the gluing scraper roller assembly 120, so as to perform the gluing operation on the electrode sheet 200 through the gluing scraper roller assembly 120, so as to realize the intermittent coating of the adhesive on the electrode sheet 200. That is, the electrode sheet 200 will contact the gluing scraper roller assembly 120 only at intervals of a specific time to perform the gluing operation on the electrode sheet 200 through the gluing scraper roller assembly 120, and will keep a certain distance from the gluing scraper roller assembly 120 at other times, thereby realizing the intermittent coating of the adhesive on the electrode sheet 200.

[0075] In this way, in the coating method of the electrode sheet coating device 100 provided by the embodiment of the present application, the second over-roller assembly 130 can be controlled by the second power structure 152 to perform a linear motion, so that the distance between the coating blade roller assembly 120 and the electrode sheet 200 can be changed during the coating operation of the electrode sheet 200 by the coating blade roller assembly 120, that is, the coating blade roller assembly 120 either contacts the electrode sheet 200 to perform the coating operation on the electrode sheet 200, or moves away from the electrode sheet 200 to stop the coating operation on the electrode sheet 200. Furthermore, the intermittent coating of the adhesive on the electrode sheet 200 can be realized to avoid the problems of excessive adhesive amount or too large coating area after the electrode sheet 200 is coated, thereby ensuring the stability of the product performance.

[0076] In some examples, as Figure 6 shown, the specific process of performing the above method step "driving the second over-roller assembly to perform a linear motion through the second power structure, so that the electrode sheet periodically contacts the coating blade roller assembly to perform the coating operation on the electrode sheet" is as follows:

[0077] Step S221: Divide each coating interval period into a first time period, a second time period, and a third time period in sequence;

[0078] Step S222: In the first time period, drive the second over-roller assembly to perform a linear motion through the second power structure, so that the electrode sheet moves from the initial position away from the coating blade roller assembly to the first contact position where it initially contacts the coating blade roller assembly;

[0079] Step S223: In the second time period, perform the coating operation on the contacted electrode sheet through the coating blade roller assembly, and drive the second over-roller assembly to perform a linear reciprocating motion through the second power structure, so that the electrode sheet moves from the first contact position to the second contact position where it is in full contact with the coating blade roller assembly and then moves back to the first contact position;

[0080] Step S224: In the third time period, drive the second over-roller assembly to perform a linear motion through the second power structure, so that the electrode sheet moves back from the first contact position to the initial position.

[0081] In this way, through the above method steps, in each glue application interval period, the glue application scraper roller assembly 120 will only contact the electrode sheet 200 in the second time period to perform glue application operation on the contacted electrode sheet 200. In other time periods (including the first time period and the second time period), since the glue application scraper roller assembly 120 does not contact the electrode sheet 200, the glue application operation cannot be performed on the electrode sheet 200. Thus, by repeating the above method steps cyclically in each glue application interval period, the intermittent coating of the glue on the electrode sheet 200 can be realized to avoid the problems of excessive glue amount or too large glue application area after the electrode sheet 200 is coated with glue, thereby ensuring the stability of the product performance.

[0082] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An electrode sheet gluing device, characterized in that it includes a first over-roller assembly, a gluing scraper roller assembly, a second over-roller assembly and a third over-roller assembly. The gluing scraper roller assembly and the second over-roller assembly are respectively located between the first over-roller assembly and the third over-roller assembly, and the gluing scraper roller assembly and the second over-roller assembly are arranged staggered on both sides of the electrode sheet; it further includes a first power structure and / or a second power structure. The first power structure is connected to the gluing scraper roller assembly and can drive the gluing scraper roller assembly to move away from or close to the electrode sheet; the second power structure is connected to the second over-roller assembly and can drive the electrode sheet to move away from or close to the gluing scraper roller assembly by driving the second over-roller assembly.

2. The electrode sheet gluing device according to claim 1, characterized in that the first over-roller assembly includes a first over-roller bracket and a first over-roller rotatably arranged on the first over-roller bracket; the second over-roller assembly includes a second over-roller bracket and a second over-roller rotatably arranged on the second over-roller bracket; the third over-roller assembly includes a third over-roller bracket and a third over-roller rotatably arranged on the third over-roller bracket; after the electrode sheet is discharged, it flows into the electrode sheet gluing device through the roller surface of the first over-roller, and then flows out of the electrode sheet gluing device through the roller surface of the third over-roller.

3. The electrode sheet gluing device according to claim 2, characterized in that an anti-sticking coating is provided on the roller surface of the first over-roller; and / or, an anti-sticking coating is provided on the roller surface of the second over-roller; and / or, an anti-sticking coating is provided on the roller surface of the third over-roller.

4. The electrode sheet gluing device according to claim 1, wherein The gluing scraper roller assembly includes a scraping blade, a gluing roller bracket, a gluing roller rotatably arranged on the gluing roller bracket, and a third motor for driving the gluing roller to rotate. The scraping blade is arranged on the roller surface of the gluing roller, and the scraping blade extends along the extending direction of the gluing roller.

5. The electrode sheet gluing device according to any one of claims 1-4, characterized in that, The first power structure includes a first moving seat and a first power component for driving the first moving seat to move linearly. The gluing scraper roller assembly is installed on the first moving seat, so that when the first power component drives the first moving seat to move linearly, the gluing scraper roller assembly is driven to move away from or close to the electrode sheet.

6. The electrode sheet gluing device according to any one of claims 1-4, characterized in that, The second power structure includes a second moving seat and a second power component for driving the second moving seat to move linearly. The second over-roller assembly is installed on the second moving seat, so that when the second power component drives the second moving seat to move linearly, the electrode sheet is driven to move away from or close to the gluing scraper roller assembly through the second over-roller assembly.

7. A glue - coating method, characterized in that, Applied in the electrode sheet gluing device according to claim 5, the gluing method includes the following steps: Start the gluing scraper roller assembly so that the gluing roller of the gluing scraper roller assembly rotates at a first linear speed, and start an external electrode sheet transmission mechanism so that the electrode sheet flows between the first over-roller of the first over-roller assembly and the third over-roller of the third over-roller assembly at a second linear speed; The first power structure drives the glue - spreading blade roller assembly to move linearly, so that the glue - spreading blade roller assembly periodically contacts the electrode sheet, and performs a glue - spreading operation on the electrode sheet to achieve intermittent coating of the glue on the electrode sheet.

8. The gluing method according to claim 7, characterized in that, The step of driving the glue - spreading blade roller assembly to move linearly by the first power structure, so that the glue - spreading blade roller assembly periodically contacts the electrode sheet and performs a glue - spreading operation on the electrode sheet specifically includes: Each glue - spreading interval period is sequentially divided into a first time period, a second time period, and a third time period; In the first time period, the first power structure drives the glue - spreading blade roller assembly to perform a linear motion, so that the glue - spreading blade roller assembly moves from the initial position away from the electrode sheet to the first contact position where it initially contacts the electrode sheet; In the second time period, the glue - spreading blade roller assembly performs a glue - spreading operation on the contacted electrode sheet, and the first power structure drives the glue - spreading blade roller assembly to perform a linear reciprocating motion, so that the glue - spreading blade roller assembly moves from the first contact position to the second contact position where it is in full contact with the electrode sheet and then moves back to the first contact position; In the third time period, the first power structure drives the glue - spreading blade roller assembly to perform a linear motion, so that the glue - spreading blade roller assembly moves back from the first contact position to the initial position.

9. A glue coating method, characterized in that, Applied in the electrode - sheet glue - spreading device as claimed in claim 6, the glue - spreading method includes the following steps: Start the glue - spreading blade roller assembly, so that the coating roller of the glue - spreading blade roller assembly rotates at a first linear speed, and start an external electrode - sheet transmission mechanism, so that the electrode sheet flows between the first over - roller of the first over - roller assembly and the third over - roller of the third over - roller assembly at a second linear speed; The second power structure drives the second over - roller assembly to move linearly, so that the electrode sheet periodically contacts the glue - spreading blade roller assembly, and performs a glue - spreading operation on the electrode sheet to achieve intermittent coating of the glue on the electrode sheet.

10. The gluing method according to claim 9, wherein The step of driving the second over - roller assembly to move linearly by the second power structure, so that the electrode sheet periodically contacts the glue - spreading blade roller assembly and performs a glue - spreading operation on the electrode sheet specifically includes: Each glue - spreading interval period is sequentially divided into a first time period, a second time period, and a third time period; In the first time period, the second power structure drives the second over - roller assembly to perform a linear motion, so that the electrode sheet moves from the initial position away from the glue - spreading blade roller assembly to the first contact position where it initially contacts the glue - spreading blade roller assembly; In the second time period, the glue - spreading blade roller assembly performs a glue - spreading operation on the contacted electrode sheet, and the second power structure drives the second over - roller assembly to perform a linear reciprocating motion, so that the electrode sheet moves from the first contact position to the second contact position where it is in full contact with the glue - spreading blade roller assembly and then moves back to the first contact position; In the third time period, the second over-roller assembly is driven by the second power structure to perform a linear motion, so that the electrode sheet moves back from the first contact position to the initial position.

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