Non-stop continuous sampling and tape splicing platform for battery cell production

Abstract

The utility model relates to a non-stop continuous sampling tape splicing platform for battery cell production, which is characterized in that a first rubberizing mechanism and a second rubberizing mechanism which are respectively used for rubberizing double-faced adhesive tape and high-temperature adhesive on the outer side and the inner side of a tape and a laser cutting mechanism for cutting the tape are arranged between a passing roller and a winding mechanism; the central angle theta formed by the cutting position of the laser cutting mechanism and the position, where the strip starts to be wound on the winding mechanism, of the strip relative to the circle center of the winding mechanism is smaller than or equal to 90 degrees. According to the utility model, samples in the middle part can be sampled at intervals according to the required sampling frequency in the continuous production process of the battery cell.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially a kind of for the interface of continuous sampling of battery production without stopping. BACKGROUND

[0002] In the traditional production process of battery, in order to obtain sample for quality detection, it is usually necessary to stop production line, which not only reduces production efficiency, but also increases production cost. The traditional sampling method has great limitations.

[0003] In the method of sampling by handheld sampler, the sampler can usually only sample from the edge of the pole piece, and cannot obtain the sample of the middle part. Since the performance and quality of the battery may differ in different areas, sampling only from the edge cannot fully reflect the quality status of the entire battery. The lack of representation of this sampling method may lead to deviation of the quality detection result, thereby affecting the overall quality control of the battery.

[0004] Manual hole-drawing method is another traditional sampling method, but this method has many risks. First, manual hole-drawing is easy to cause the fracture of the pole piece, which not only affects the current process, but also may have a chain reaction on the subsequent processes. For example, the fractured pole piece may cause interruption of the production line, increasing production cost and time delay. The sampling frequency and sample weight of manual hole-drawing method are also difficult to keep consistent, which may lead to instability of the detection result. The inconsistency of the sample may mislead production decisions, thereby affecting the final quality of the battery.

[0005] In some methods, a thickness gauge is used to measure the continuously produced pole piece without stopping, but as a high-precision measuring device, the thickness gauge, although can provide accurate thickness measurement results, its high cost and requirement for installation space limit its wide application in battery production. And it can only measure thickness, and it is difficult to sample and measure many other characteristics of the sample.

[0006] In summary, the traditional battery sampling method not only affects production efficiency and quality control, but also may lead to increase in production cost. In order to improve the quality and efficiency of battery production, enterprises need to explore more convenient and efficient sampling technology. SUMMARY

[0007] In view of the above problems of the prior art, the utility model provides a non-stop continuous sampling interface for battery production, which can sample the sample in the middle part at intervals according to the required sampling frequency during continuous production of the battery.

[0008] The non-stop continuous sampling interface for battery production of the utility model is provided between the roller and the winding mechanism:

[0009] The first gluing mechanism is used for double-sided gluing of the tape from the outer side entering the winding mechanism;

[0010] The second gluing mechanism is used for high-temperature gluing of the tape from the inner side entering the winding mechanism;

[0011] The laser cutting mechanism is used for cutting the tape on the winding mechanism;

[0012] The cutting position A of the laser cutting mechanism on the winding mechanism and the position B of the tape starting to be wound on the winding mechanism form a central angle θ relative to the center of the winding mechanism, and θ≤90°.

[0013] As some preferred schemes, between the passing roller and the winding mechanism, there are further provided:

[0014] The position sensor is used for position monitoring of the double-sided adhesive tape and the high-temperature adhesive tape attached by the first gluing mechanism and the second gluing mechanism on the tape,

[0015] The controller is used for signal connection with the position sensor, the first gluing mechanism, the second gluing mechanism and the laser cutting mechanism, on one hand, receives the position signal sent by the position sensor, and on the other hand, controls the gluing action interval of the first gluing mechanism and the second gluing mechanism and the cutting action interval of the laser cutting mechanism according to the position signal and the preset distance respectively.

[0016] As some preferred schemes, below the cutting position A of the laser cutting mechanism, there is further provided a sample collection device.

[0017] As some preferred schemes, before or in the tape receiving platform, there are provided a plurality of tensioning roller assemblies.

[0018] As some preferred schemes, the gluing length of the first gluing mechanism on the tape is 200-600mm.

[0019] As some preferred schemes, the gluing length of the second gluing mechanism on the tape is 100-600mm.

[0020] Compared with the prior art, the tape receiving platform of the utility model has the following advantages:

[0021] 1. Improve production efficiency: continuous sampling can be realized without stopping the production line, avoiding the problem of stopping the production line in the traditional sampling method, thereby significantly improving the production efficiency.

[0022] 2. Enhance quality control: through continuous sampling, the platform can more comprehensively reflect the quality state of the battery cell, solving the problem of insufficient representation caused by sampling from the edge in the traditional method, thereby improving the accuracy and reliability of quality detection.

[0023] 3. Reduced cost: The present application helps to reduce production cost and time delay due to reduced downtime of production line and improved consistency of sampling.

[0024] 4. Automation and reliability: The present application has simple structure, reliable automation control, precise sensing and regulation of position, reduced manual intervention and potential errors, and ensures stability of sampling process and consistency of samples.

[0025] 5. Strong adaptability: The present application has flexible design, can adapt to different production requirements and environments, and enhances flexibility and adaptability of production line. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 Fig. 1 is a structural schematic diagram of a tape receiving platform part in an existing technology electric core production system.

[0028] Figure 2 Fig. 2 is a structural schematic diagram of a tape receiving platform part of the present application.

[0029] Figure 3 Fig. 3 is an operation schematic diagram of a sampling process of the present application.

[0030] Among them, 1-tape receiving platform, 2-pass roller, 3-controller, 4-first adhesive mechanism, 5-second adhesive mechanism, 6-laser cutting mechanism, 7-winding mechanism, 8-position sensor, 9-sample collection device, 10-double-sided adhesive tape, 11-high temperature adhesive, 12-tension roller assembly. DETAILED DESCRIPTION

[0031] The embodiments of the present application provide detailed preparation methods and technical steps, which are intended to fully describe the specific implementation process of the present application. However, these detailed technical details only represent one specific way to realize the present application, and are not intended to limit the core content or protection scope of the present application. Those skilled in the art should understand that these embodiments are only for illustrative purposes, and should not be regarded as a limitation on the only or exclusive implementation of the present application.

[0032] As Figure 1The structure diagram of the tape receiving platform part in the prior art battery cell production system is shown. The dashed box part is the tape receiving platform 1. The tape continuously conveyed from the previous process of the system enters the tape receiving platform 1, passes through the rollers 2, and enters the winding mechanism 7 to be wound.

[0033] Since the tape entering the winding mechanism 7 is the final product of the process, taking the tape entering the winding mechanism 7 as the sampling target can ensure the typicality and representativeness of the process sample. At the same time, the rollers 2 and the winding mechanism 7 provide suitable tension and continuous transmission power for the tape between the two, and it is expected to design a continuous sampling matching device by using the reliable mechanical transmission between the two.

[0034] As Figure 2 , the tape receiving platform 1 provided by the utility model has the following structure between the rollers 2 and the winding mechanism 7:

[0035] The first adhesive paste mechanism 4 is used for pasting the double-sided adhesive tape 10 on the outer side of the tape entering the winding mechanism 7;

[0036] The second adhesive paste mechanism 5 is used for pasting the high-temperature adhesive 11 on the inner side of the tape entering the winding mechanism 7;

[0037] The laser cutting mechanism 6 is used for cutting the tape on the winding mechanism 7;

[0038] The cutting position A of the laser cutting mechanism 6 on the winding mechanism 7 and the position B at which the tape starts to be wound on the winding mechanism 7 form a central angle θ≤90° with respect to the center of the winding mechanism 7.

[0039] The above structure of the utility model can paste the double-sided adhesive tape 10 and the high-temperature adhesive 11 on the outer side and the inner side of the tape through the first adhesive paste mechanism 4 and the second adhesive paste mechanism 5 respectively. After pasting, the tape with the double-sided adhesive tape 10 and the high-temperature adhesive 11 enters the winding mechanism 7 to be wound. With the winding, the double-sided adhesive tape 10 wraps around the tape again and enters the position B at which the winding starts, and the tape is bonded with the outer tape. At this time, the laser cutting mechanism 6 can cut the outermost tape on the winding mechanism 7 for the first time, without causing the tape to be loose. The high-temperature adhesive 11 arranged on the inner side is used for protecting the inner tape from being damaged during laser cutting. By controlling the distance between the high-temperature adhesive 11 and the double-sided adhesive tape 10, the high-temperature adhesive 11 can enter the cutting position when the laser cutting mechanism 6 cuts for the first time. After the first cutting, the outer tape is loose and falls, and the first cutting position becomes the free end of the falling tape, and the other end is still located in the winding structure and is fixed by the double-sided adhesive tape 10. When the other end rotates to the position beyond the cutting position A, the outer tape that is loose is cut for the second time, and the sampling of a section of the tape is completed.

[0040] In order to better perform the precise cutting and position control of sampling, the utility model further has:

[0041] Position sensor 8 is used to monitor the position of double-sided adhesive 10 and high-temperature adhesive 11 applied to the strip by the first adhesive application mechanism 4 and the second adhesive application mechanism 5.

[0042] The controller 3 is used to connect to the position sensor 8, the first adhesive application mechanism 4, the second adhesive application mechanism 5, and the laser cutting mechanism 6 respectively. On the one hand, it receives the position signal sent by the position sensor 8, and on the other hand, it controls the adhesive application interval of the first adhesive application mechanism 4 and the second adhesive application mechanism 5, and controls the cutting interval of the laser cutting mechanism 6 according to the position signal and the preset distance.

[0043] The automated control of controller 3 and position sensor 8 facilitates precise adjustment of adhesive spacing and cutting points, making continuous sampling more accurate and avoiding interruptions to continuous production caused by sampling errors.

[0044] To better collect samples, a sample collection device 9 is provided below the cutting position A of the laser cutting mechanism 6 to collect samples that automatically fall off during the second cut.

[0045] To ensure more reliable strip tension in the splicing platform 1, several tension roller assemblies 12 can be installed before the strip enters the splicing platform 1 or immediately after entering the splicing platform 1 to adjust the tension of the strip.

[0046] The adhesive application dimensions on the strip by the first adhesive application mechanism 4 and the second adhesive application mechanism 5 are generally not limited. Those skilled in the art can reasonably adjust the adhesive application dimensions according to the strip size and the bonding force. As some design examples, the adhesive application length of the first adhesive application mechanism 4 on the strip is preferably 200-600mm, which is beneficial for providing reliable double-sided adhesion and maintaining the continuity of the strip winding after cutting and sampling; the adhesive application length of the second adhesive application mechanism 5 on the strip is preferably 100-600mm, which is beneficial for ensuring that laser damage to other parts is strictly prevented during the first cut.

[0047] Figure 3 This demonstrates the working principle of this utility model. The strip material, continuously conveyed from the previous process, enters the receiving platform 1, passes through the roller 2, and finally enters the winding mechanism 7 for winding. When sampling is required according to the designed frequency or interval, the controller 3 can send signals to the first adhesive applicator 4 and the second adhesive applicator 5 respectively. The first adhesive applicator 4 and the second adhesive applicator 5 then sequentially apply double-sided adhesive 10 to the outer side of the strip material according to the designed spacing. Figure 3 a) and attaching high-temperature adhesive 11 to the inside of the strip. Figure 3b), with the continuous winding of the tape, the double-sided tape 10 and the high-temperature adhesive 11 pass through the detection area of the position sensor 8 in turn, the position sensor 8 feeds back the detected position information to the controller 3, so that the position signal is accurately controlled, and the double-sided tape 10 winds around the winding mechanism 7 for one turn and then enters the position B where the tape starts to be wound again Figure 3 c), at this time, the outer adhesive surface of the double-sided tape 10 is bonded with the tape that has just entered the winding position, and at this time or thereafter, the tape area where the high-temperature adhesive 11 is located reaches the cutting position A of the laser cutting mechanism 6 (the central angle θ ≤ 90° ensures the position relationship at this time that the high-temperature adhesive 11 is located), and the laser cutting mechanism 6 performs the first cutting according to the control signal provided by the controller 3, after the first cutting, the outer tape is relaxed and falls, the first cutting site becomes the free end of the falling, and the other end is still located in the winding structure and is fixed by the double-sided tape 10 Figure 3 d), when the other end rotates to the cutting position A or beyond Figure 3 e), the laser cutting mechanism 6 performs the second cutting on the relaxed outer tape according to the control signal provided by the controller 3, that is, the sampling of a section of the sample is completed, and the cut sample can fall into the sample collection device 9 for collection. Thereafter, the controller 3 controls the first adhesive mechanism 4 and the second adhesive mechanism 5 to send signals again according to the design frequency or interval, and starts a new round of adhesive and cutting, that is, the sampling operation of a section of the sample is completed again.

[0048] Since the second cutting of the laser cutting mechanism 6 is performed on the relaxed outer tape, it has little effect on other parts of the tape in the winding state, so the adhesive operation for protecting the high-temperature adhesive 11 during the second cutting can be omitted. In order to further eliminate the influence and ensure the reliability of the second cutting, in the above process, the second adhesive mechanism 5 can also be controlled by the controller 3 and the position sensor 8 to perform the operation of attaching the high-temperature adhesive 11 to the tape twice in each sampling process, and the interval of the two high-temperature adhesives 11 corresponds to the interval distance of the first cutting and the second cutting on the tape.

[0049] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application. Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can modify, modify, replace and deform the above-described embodiments within the scope of the present application. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

Claims

1. A non-stop continuous sampling and taping platform for production of an electric core, which is provided with, between a passing roller (2) and a winding mechanism (7): a first taping mechanism (4) for taping double-sided tape (10) to the outer side of the tape entering the winding mechanism (7); a second taping mechanism (5) for taping high-temperature tape (11) to the inner side of the tape entering the winding mechanism (7); a laser cutting mechanism (6) for cutting the tape on the winding mechanism (7); the cutting position A of the laser cutting mechanism (6) on the winding mechanism (7) and the position B where the tape starts to be wound on the winding mechanism (7) form a central angle θ ≤ 90° with respect to the center of the winding mechanism (7).

2. The no-downtime continuous sampling tabbing platform for electric cell production of claim 1, wherein, The platform is also provided with, between the passing roller (2) and the winding mechanism (7): a position sensor (8) for monitoring the positions of the double-sided tape (10) and the high-temperature tape (11) taped by the first taping mechanism (4) and the second taping mechanism (5) on the tape, a controller (3) connected to the position sensor (8), the first taping mechanism (4), the second taping mechanism (5), and the laser cutting mechanism (6) to receive the position signals sent by the position sensor (8) and control the taping action intervals of the first taping mechanism (4) and the second taping mechanism (5) and the cutting action interval of the laser cutting mechanism (6) according to the position signals and preset distances.

3. The no-downtime continuous sampling tabbing platform for electric cell production of claim 1, wherein, A sample collection device (9) is also provided below the cutting position A of the laser cutting mechanism (6).

4. The no-downtime continuous sampling tabbing platform for electric cell production of claim 1, wherein, A plurality of tension roller assemblies (12) are arranged in front of or in the platform (1).

5. The no-downtime continuous sampling tabbing platform for electric cell production of claim 1, wherein, The taping length of the first taping mechanism (4) on the tape is 200-600 mm.

6. The no-downtime continuous sampling tabbing platform for electric cell production of claim 1, wherein, The taping length of the second taping mechanism (5) on the tape is 100-600 mm.

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