Pole piece coating detection device and coating machine

Abstract

The utility model belongs to the technical field of pole piece production, and particularly relates to a pole piece coating detection device and a coating machine, and the pole piece coating detection device comprises a rack, a conveying mechanism, a coating jumping prevention detection mechanism and a coating detection mechanism, the conveying mechanism, the coating jumping prevention detection mechanism and the coating detection mechanism are all connected to the rack; the detection direction of the coating jumping prevention detection mechanism intersects with the conveying direction of the conveying mechanism. The detection direction of the coating detection mechanism is intersected with the conveying direction of the conveying mechanism; and an assembly gap is formed between the coating jumping prevention detection mechanism and the coating detection mechanism. According to the utility model, the coating size can be guaranteed, the number of defective scrapped foils is reduced, and the coating efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the pole piece production technical field especially relates to a pole piece coating detection device and coating machine. BACKGROUND

[0002] Lithium battery is a kind of battery with lithium metal or lithium alloy as negative electrode material and using non-aqueous electrolyte solution.Lithium battery is first applied in cardiac pacemaker.Lithium battery has the advantages of extremely low self-discharge rate and gentle discharge voltage, so that the pacemaker implanted in human body can operate for a long time without recharging.With the development of science and technology, lithium battery has become mainstream.Coating is one of the most important process flows of lithium ion battery, and coating is to uniformly coat positive or negative slurry required for lithium ion battery manufacturing on substrate.Currently, the positive substrate is aluminum foil, and the negative substrate is copper foil.

[0003] However, if the foil has a leakage phenomenon in the bottom coating process of the existing part of the coating process, the coating fiber will skip the leakage foil when it detects the leakage foil during production, which will cause abnormal coating film size and increase the number of coating defects, affecting the coating efficiency. INVENTION CONTENTS

[0004] The utility model discloses to aim at the deficiency of prior art, provide a kind of pole piece coating detection device, can solve the technical problems of low coating efficiency and waste too much material of prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of pole piece coating detection device, including rack, conveying mechanism, anti-jumping coating detection mechanism and coating detection mechanism;The conveying mechanism, the anti-jumping coating detection mechanism and the coating detection mechanism are all connected on the rack;The detection direction of the anti-jumping coating detection mechanism is intersected with the conveying direction of the conveying mechanism;The detection direction of the coating detection mechanism is intersected with the conveying direction of the conveying mechanism;And anti-jumping coating detection mechanism and the coating detection mechanism between there is assembly gap.

[0007] Preferably, the rack is provided with a one-letter type support rod;The support rod is parallelly arranged with the plane where the conveying direction of the conveying mechanism is located;And the detection end of the anti-jumping coating detection mechanism is connected to the support rod;The detection end of the coating detection mechanism is connected to the support rod.

[0008] Preferably, the anti-skip coating detection mechanism comprises a first optical fiber sensor, a first mounting seat and a first optical fiber amplifier; the first mounting seat is arranged on the rack; the first optical fiber sensor is connected to the first mounting seat; and the detection direction of the first optical fiber sensor is arranged intersecting with the conveying direction of the conveying mechanism; the first optical fiber sensor and the coating detection mechanism form the assembly gap; and the first optical fiber amplifier is arranged on the rack and is electrically connected to the first optical fiber sensor.

[0009] Preferably, the angle between the detection direction of the first optical fiber sensor and the plane where the conveying direction of the conveying mechanism is located is α, and 0° < α < 90° is satisfied.

[0010] Preferably, the coating detection mechanism comprises a second optical fiber sensor, a second mounting seat and a second optical fiber amplifier; the second mounting seat is arranged on the rack; the second optical fiber sensor is connected to the second mounting seat; and the detection direction of the second optical fiber sensor is arranged intersecting with the conveying direction of the conveying mechanism; the second optical fiber sensor and the anti-skip coating detection mechanism form the assembly gap; and the second optical fiber amplifier is arranged on the rack and is electrically connected to the second optical fiber sensor.

[0011] Preferably, the angle between the detection direction of the second optical fiber sensor and the plane where the conveying direction of the conveying mechanism is located is β, and 180° > β ≥ 90° is satisfied.

[0012] Preferably, the length of the assembly gap is L, and L satisfies L ≥ 100 mm.

[0013] Preferably, the conveying mechanism comprises a first conveying roller and a second conveying roller; the first conveying roller is rotatably connected to the rack; the second conveying roller is rotatably connected to the rack; and the detection end of the anti-skip coating detection mechanism is arranged between the first conveying roller and the second conveying roller; and the detection end of the coating detection mechanism is arranged between the first conveying roller and the second conveying roller.

[0014] Preferably, the rack is provided with a controller; and the anti-skip coating detection mechanism and the coating detection mechanism are electrically connected to the controller respectively.

[0015] The utility model discloses still disclose a kind of coating machines, including the pole piece coating detection device described above.

[0016] The utility model discloses an advantageous effect lies in, this technical scheme is through the assembly gap to realize coating detection mechanism and prevent the assembly of jump coating detection mechanism to the rack two different positions on, thereby realize coating detection mechanism and prevent the jump of anyone of coating detection mechanism can induct when the normal coating of coating machine when coating, reduce the abnormal phenomenon of coating size of jump of coating process, further guarantee the size of coating processing, reduce the bad scrap quantity of foil, and improve coating efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] The features, advantages, and technical and artistic effects of the example embodiments of the utility model will be described below with reference to the accompanying drawings. Figures 1-5

[0018] Figure 1 It is the structure schematic drawing of pole piece coating detection device of an embodiment of the utility model;

[0019] Figure 2 It is the top view of pole piece coating detection device of an embodiment of the utility model;

[0020] Figure 3 It is the partial close -up drawing of pole piece coating detection device of an embodiment of the utility model;

[0021] Figure 4 It is the partial close -up drawing of pole piece coating detection device of an embodiment of the utility model;

[0022] Figure 5 It is the partial structure schematic drawing of pole piece coating detection device of an embodiment of the utility model.

[0023] In the drawing: 1 - rack;11 - support rod;2 - conveying mechanism;21 - first conveying roller;22 - second conveying roller;3 - prevent the jump of coating detection mechanism;31 - first optical fiber sensing part;32 - first mounting seat;33 - first optical fiber amplifier;4 - coating detection mechanism;41 - second optical fiber sensing part;42 - second mounting seat;43 - second optical fiber amplifier;5 - controller;6 - foil;7 - assembly gap. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and the drawings of the specification and the appended claims should be considered in conjunction with the summary of the application and the abstract; the terms "comprising," "having," "including," and "containing" used herein are meant to be open-ended and non-limiting.

[0025] ​In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise explicitly and specifically limited.

[0026] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that A exists alone, A and B exist together, and multiple cases exist alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0028] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] The following will be described in detail in combination with the accompanying drawings Figures 1-5 The present application will be described in further detail, but not as a limitation of the present application.

[0030] As Figure 1 As shown in the embodiment of the present application, the pole piece coating detection device; including rack 1, conveying mechanism 2, anti-jumping coating detection mechanism 3 and coating detection mechanism 4; conveying mechanism 2 is connected to rack 1, and is used for conveying the already coated foil 6; anti-jumping coating detection mechanism 3 is connected to rack 1; the detection direction of anti-jumping coating detection mechanism 3 is arranged to intersect with the conveying direction of conveying mechanism 2; coating detection mechanism 4 is connected to rack 1; the detection direction of coating detection mechanism 4 is arranged to intersect with the conveying direction of conveying mechanism 2; and an assembly gap 7 is arranged between anti-jumping coating detection mechanism 3 and coating detection mechanism 4.

[0031] The technical scheme of the utility model realizes that the coating detection mechanism and the anti-jumping coating detection mechanism are assembled to two different positions of the rack through the assembly gap, so that when any one of the coating detection mechanism and the anti-jumping coating detection mechanism can sense the foil missing, the coating machine does not stop coating when coating normally, the jumping coating in the coating process is reduced, and the abnormal coating size phenomenon is caused; further, the size of the coating processing is guaranteed, the number of foil bad scrap is reduced, and the coating efficiency is improved.

[0032] Specifically, in some embodiments, as shown in Figure 1 and 2 The anti-jumping coating detection mechanism 3 comprises a first optical fiber sensing part 31, a first mounting seat 32 and a first optical fiber amplifier 33; the first mounting seat 32 is arranged on the rack 1; the first optical fiber sensing part 31 is connected to the first mounting seat 32; and the detection direction of the first optical fiber sensing part 31 is arranged to intersect the conveying direction of the conveying mechanism 2; the assembly gap 7 is formed between the first optical fiber sensing part 31 and the coating detection mechanism 4; and the first optical fiber amplifier 33 is arranged on the rack 1 and is electrically connected to the first optical fiber sensing part 31. The first optical fiber sensing part 31 utilizes the total reflection principle of light; when the light signal is shot into the fiber core at a specific angle, total reflection occurs on the interface between the fiber core and the cladding, so that the light can continuously reflect in the fiber core and propagate along a straight line, and even if the optical fiber is bent, it will not escape. The first optical fiber sensing part 31 receives the light signal and converts it into an electrical signal, which is transmitted to the first optical fiber amplifier 33; the original information is recovered after demodulation by the first optical fiber amplifier 33; and the missing coating position and size of the coating can be detected more clearly, and the accuracy of detection and collection is improved.

[0033] Specifically, in some embodiments, as shown in Figure 2 and 3 The angle between the detection direction of the first optical fiber sensing part 31 and the plane where the conveying direction of the conveying mechanism 2 is located is α, and 0° < α < 90° is satisfied. α can be 75°, 80°, 85°, 60°, 65°, 70°, etc. The structure can sense the bottom coating foil in advance relative to the coating detection mechanism 4 through the installation mode smaller than a right angle, the operation of stopping coating when the second optical fiber sensing part 41 senses the missing coating can be avoided, the jumping coating in the coating process is reduced, and the abnormal coating size phenomenon is caused; further, the size of the coating processing is guaranteed, the number of foil bad scrap is reduced, and the coating efficiency is improved.

[0034] Specifically, in some embodiments, as shown in Figure 1 and 2As shown, the coating detection mechanism 4 comprises a second optical fiber sensing element 41, a second mounting base 42 and a second optical fiber amplifier 43; the second mounting base 42 is arranged on the rack 1; the second optical fiber sensing element 41 is connected to the second mounting base 42; and the detection direction of the second optical fiber sensing element 41 is arranged to intersect the conveying direction of the conveying mechanism 2; the second optical fiber sensing element 41 and the anti-jumping coating detection mechanism 3 (the first optical fiber sensing element 31) form the assembly gap 7; the second optical fiber amplifier 43 is arranged on the rack 1 and is electrically connected to the second optical fiber sensing element 41. Among them, the second optical fiber sensing element 41 also utilizes the principle of total reflection of light; when the light signal is incident into the fiber core at a certain angle, total reflection will occur on the interface between the fiber core and the cladding, so that the light can continuously reflect in the fiber core and propagate along a straight line, even if the optical fiber is bent. The second optical fiber sensing element 41 receives the light signal and converts it into an electrical signal, which is transmitted to the second optical fiber amplifier 43; after demodulation by the second optical fiber amplifier 43, the original information is recovered; and the missed coating position and size of the coating can be detected more clearly; thereby improving the accuracy of detection and collection.

[0035] Specifically, in some embodiments, as shown in Figure 2 and 4 The angle between the detection direction of the second optical fiber sensing element 41 and the plane where the conveying direction of the conveying mechanism 2 is located is β, which satisfies: 180°>β≥90°; β can be 145°, 130°, 125°, 110°, 105°, 90°, etc. This structure can slightly delay the sensing of the primer foil by the second coating detection mechanism 4 relative to the first coating detection mechanism 3 by installing it at an angle greater than or equal to a right angle, which can avoid the first optical fiber sensing element 31 from stopping the coating operation too early when it senses the missed coating, thereby reducing the phenomenon of abnormal coating size caused by jumping during the coating process; and further ensuring the size of the coating process, reducing the number of defective scrap foils, and improving the coating efficiency.

[0036] Specifically, in some embodiments, the frame 1 is provided with a straight support rod 11; the support rod 11 is arranged parallel to the plane in which the conveying direction of the conveying mechanism 2 is located; and the detection end (first mounting base 32) of the anti-skip coating detection mechanism 3 is connected to the support rod 11; the detection end (second mounting base 42) of the coating detection mechanism 4 is connected to the support rod 11. A first optical fiber sensor 31 is disposed on the support rod 11; a second optical fiber sensor 41 is disposed on the support rod 11; and the assembly gap 7 is formed between the first optical fiber sensor 31, the support rod 11, and the second optical fiber sensor 41. That is, the first optical fiber sensor 31 and the second optical fiber sensor 41 are assembled on the same horizontal line, which allows for detection of the coating status at different positions, thereby accelerating the detection speed and reducing the phenomenon of abnormal coating dimensions caused by skipping during the coating process; thus ensuring the dimensions of the coating process, reducing the number of defective and scrapped foils, and improving coating efficiency.

[0037] Specifically, in some implementations, such as Figure 2 As shown, the length of the assembly gap 7 is L, and L satisfies: L≥100mm. This structure, through the first fiber optic sensor 31 and the second fiber optic sensor 41 at a suitable large gap position, can avoid the overlap of detection, thereby enabling detection of the coating status at different positions, thus ensuring the dimensions of the coating process, reducing the number of defective and scrapped foils, and improving coating efficiency.

[0038] Specifically, in some implementations, such as Figure 1 and 5 As shown, the conveying mechanism 2 includes a first conveying roller 21 and a second conveying roller 22; the first conveying roller 21 is rotatably connected to the frame 1; the second conveying roller 22 is rotatably connected to the frame 1; and the detection end of the anti-skip coating detection mechanism 3 is located between the first conveying roller 21 and the second conveying roller 22; the detection end of the coating detection mechanism 4 is located between the first conveying roller 21 and the second conveying roller 22.

[0039] Specifically, in some implementations, such as Figure 1As shown, the rack 1 is provided with a controller 5, and the anti-jumping coating detection mechanism 3 (with a first optical fiber sensing part 31) and the coating detection mechanism 4 (with a second optical fiber sensing part 41) are electrically connected with the controller 5. The controller 5 is a PLC controller (programmable logic controller), and an interlocking program is written in the PLC controller, a trigger signal is provided by the first optical fiber sensing part 31 (anti-jumping coating optical fiber), and an end signal is provided by the first optical fiber sensing part 31 and the second optical fiber sensing part 41 simultaneously. That is, when the first optical fiber sensing part 31 and the second optical fiber sensing part 41 simultaneously sense the bottom of the coating head, the equipment starts coating, when one of the first optical fiber sensing part 31 and the second optical fiber sensing part 41 senses a missing foil, the equipment does not jump coating to cause an abnormality, and when the first optical fiber sensing part 31 and the second optical fiber sensing part 41 simultaneously sense a light foil or a ceramic, the equipment stops coating to form a required process gap.

[0040] The utility model discloses still propose a kind of coating machine, and the coating machine includes pole piece coating detection device, and the specific structure of the pole piece coating detection device refers to above-mentioned embodiment, since the coating machine of the present application adopts all technical solutions of above-mentioned all embodiments, at least has all beneficial effects brought by the technical solutions of above-mentioned embodiments, here no longer one by one elaboration.

[0041] In addition, it should be understood that, although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution, and the description mode of the specification is only for the sake of clarity, and the skilled in the art should be the whole specification, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by the skilled in the art.

[0042] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also change and modify the above-mentioned embodiments. Therefore, the utility model is not limited to the above-mentioned specific embodiments, and any obvious improvement, replacement or modification made by the skilled in the art on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in the present specification, these terms are only for the convenience of description, and do not constitute any limitation on the utility model.

Claims

1. An electrode coating detection device, characterized in that: It includes a frame, a conveying mechanism, an anti-skip coating detection mechanism, and a coating detection mechanism; the conveying mechanism, the anti-skip coating detection mechanism, and the coating detection mechanism are all connected to the frame; the detection direction of the anti-skip coating detection mechanism intersects with the conveying direction of the conveying mechanism; the detection direction of the coating detection mechanism intersects with the conveying direction of the conveying mechanism; and an assembly gap is provided between the anti-skip coating detection mechanism and the coating detection mechanism.

2. The electrode coating detection device according to claim 1, characterized in that: The frame is provided with a straight support rod; the support rod is arranged parallel to the plane in which the conveying direction of the conveying mechanism is located; and the detection end of the anti-skid coating detection mechanism is connected to the support rod; the detection end of the coating detection mechanism is connected to the support rod.

3. The electrode coating detection device according to claim 1 or 2, characterized in that: The anti-skip coating detection mechanism includes a first optical fiber sensor, a first mounting base, and a first optical fiber amplifier; the first mounting base is disposed on the frame; the first optical fiber sensor is connected to the first mounting base; and the detection direction of the first optical fiber sensor intersects with the conveying direction of the conveying mechanism; the first optical fiber sensor and the coating detection mechanism form the assembly gap; the first optical fiber amplifier is disposed on the frame and electrically connected to the first optical fiber sensor.

4. The electrode coating detection device according to claim 3, characterized in that: The angle between the detection direction of the first optical fiber sensor and the plane containing the conveying direction of the conveying mechanism is α, which satisfies: 0° < α < 90°.

5. The electrode coating detection device according to claim 1 or 2, characterized in that: The coating detection mechanism includes a second optical fiber sensor, a second mounting base, and a second optical fiber amplifier; the second mounting base is disposed on the frame; the second optical fiber sensor is connected to the second mounting base; and the detection direction of the second optical fiber sensor intersects with the conveying direction of the conveying mechanism; the assembly gap is formed between the second optical fiber sensor and the anti-skip coating detection mechanism; the second optical fiber amplifier is disposed on the frame and electrically connected to the second optical fiber sensor.

6. The electrode coating detection device according to claim 5, characterized in that: The angle between the detection direction of the second optical fiber sensor and the plane containing the conveying direction of the conveying mechanism is β, which satisfies: 180°>β≥90°.

7. The electrode coating detection device according to claim 1 or 2, characterized in that: The length of the assembly gap is L, and L satisfies: L≥100mm.

8. The electrode coating detection device according to claim 1, characterized in that: The conveying mechanism includes a first conveying roller and a second conveying roller; the first conveying roller is rotatably connected to the frame; the second conveying roller is rotatably connected to the frame. Furthermore, the detection end of the anti-skid coating detection mechanism is located between the first conveying roller and the second conveying roller; the detection end of the coating detection mechanism is located between the first conveying roller and the second conveying roller.

9. The electrode coating detection device according to claim 1, characterized in that: The frame is equipped with a controller; the anti-skip coating detection mechanism and the coating detection mechanism are respectively electrically connected to the controller.

10. A coating machine, characterized in that: The electrode coating detection device includes any one of claims 1 to 9.

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