Conveying device and battery production system

Abstract

The utility model relates to the technical field of lithium battery production systems, in particular to a conveying device and a battery production system. The conveying device comprises a buffering mechanism, a tension separating mechanism and a tension adjusting mechanism. The tension separating mechanism is used for separating the tension of the strip-shaped material so as to form tension intervals on the two sides of the tension separating mechanism; a tension adjusting mechanism is arranged in each tension interval, and the tension adjusting mechanisms are used for adjusting the tension of the strip-shaped materials in the tension intervals; the caching mechanism is used for caching the strip-shaped materials so as to adjust the conveying speed of the strip-shaped materials on the two sides of the caching mechanism. The tension of the strip-shaped materials is cut off through the tension cutting-off mechanism, the tension of the strip-shaped materials is adjusted in cooperation with the tension adjusting mechanism, the speed of the strip-shaped materials is adjusted through the temporary storage mechanism, and compared with the prior art, the influence of the speed difference between two adjacent working sections on the strip-shaped materials can be eliminated, and the conveying quality of the strip-shaped materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production systems, and in particular to a conveying device and a battery production system. Background Art

[0002] Lithium-ion batteries have the advantages of light weight, small size, high operating voltage, high energy density, high output power, high charging efficiency and no memory effect. They are currently widely used in various industries. The production process of lithium-ion batteries involves multiple sections, such as the coating section and rolling section of the lithium-ion battery production system. Since there is a speed difference between the two sections, the speed difference will cause the lithium-ion battery foil to break, etc., so the speed difference of the foil needs to be adjusted. Utility Model Content

[0003] On one hand, the utility model provides a conveying device for adjusting the speed difference of lithium-ion battery foil. On the other hand, the utility model also provides a battery production system, including the above-mentioned conveying device.

[0004] In order to solve the above problems, an embodiment of the utility model provides a conveying device for conveying strip materials, the conveying device comprising: a buffer mechanism, a tension isolation mechanism and a tension adjustment mechanism;

[0005] The tension isolation mechanism is used to isolate the tension of the strip material to form tension zones on both sides of the tension isolation mechanism;

[0006] The tension adjustment mechanism is provided in each of the tension intervals, and the tension adjustment mechanism is used to adjust the tension of the strip material in the tension interval;

[0007] The buffer mechanism is used to buffer the strip material to adjust the conveying speed of the strip material on both sides of the buffer mechanism.

[0008] Furthermore, it also includes a first frame, the first frame has a back plate, and the tension isolation mechanism and the tension adjustment mechanism are both arranged on the back plate.

[0009] Further, the tension adjustment mechanism comprises a first roller frame, a tension adjustment roller and a first driving member;

[0010] One end of the first roller frame is rotatably disposed on the back plate;

[0011] The tension adjustment roller is rotatably disposed in the first roller frame, and the first driving member is connected to the first roller frame and drives the first roller frame to rotate, so as to drive the tension adjustment roller to swing around the rotation center of the first roller frame.

[0012] Further, the tension isolation mechanism includes a power roller and a pressure roller;

[0013] One end of the power roller is rotatably mounted on the back plate; one end of the pressure roller is rotatably mounted on the back plate;

[0014] The power roller and the pressure roller are spaced apart, and the strip material can pass between the power roller and the pressure roller. When the strip material passes between the power roller and the pressure roller, the pressure roller can cooperate with the power roller to press the strip material.

[0015] Furthermore, it also includes a tension detection mechanism arranged corresponding to the tension adjustment mechanism, and the tension detection mechanism is used to detect the tension information of the strip material.

[0016] Further, the tension detection mechanism includes a tension detection roller, a roller seat and a pressure detection member;

[0017] The tension detection roller is rotatably arranged on the roller seat, and the pressure detection member is arranged on the roller seat and is used for detecting the pressure information of the roller seat.

[0018] Further, the cache mechanism includes a first frame, a second frame, a second frame and a drive assembly;

[0019] The first frame is slidably mounted on the second frame, and the second frame is fixedly mounted on the second frame; the driving assembly is connected to the first frame, and drives the first frame to slide toward or away from the first frame;

[0020] A first buffer roller is arranged in the first frame, and a second buffer roller corresponding to the first buffer roller is arranged in the second frame. The strip material can be wound around the first buffer roller and the second buffer roller.

[0021] Furthermore, it also includes a plurality of rollers, and one end of all the rollers is rotatably disposed on the back plate.

[0022] Furthermore, it also includes an impurity removal component, which is used to remove magnetic impurities on the surface of the strip material.

[0023] Another embodiment of the present invention further provides a battery production system, comprising the conveying device provided by any of the above embodiments; the conveying device is provided in two groups, and the two groups of the conveying devices are stacked up and down.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a conveying device for conveying strip materials, and the conveying device comprises: a buffer mechanism, a tension isolation mechanism and a tension adjustment mechanism; the tension isolation mechanism is used to isolate the tension of the strip material to form tension intervals on both sides of the tension isolation mechanism; the tension adjustment mechanism is provided in each tension interval, and the tension adjustment mechanism is used to adjust the tension of the strip material in the tension interval; the buffer mechanism is used to buffer the strip material to adjust the conveying speed of the strip material on both sides of the buffer mechanism.

[0026] The tension of the strip material is isolated by the tension isolation mechanism, and the tension of the strip material is adjusted in cooperation with the tension adjustment mechanism, and the speed of the strip material is adjusted by the buffer mechanism. Compared with the existing technology, the influence of the speed difference between two adjacent work sections on the strip material can be eliminated, thereby ensuring the conveying quality of the strip material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a battery production system provided by an embodiment of the utility model;

[0029] Figure 2 for Figure 1 Schematic diagram of some structures;

[0030] Figure 3 It is a schematic diagram of the structure of the cache mechanism;

[0031] Figure 4 It is a structural schematic diagram of the tension adjustment mechanism;

[0032] Figure 5 It is a partial structural schematic diagram of the tension partition mechanism;

[0033] Figure 6 It is a structural schematic diagram of the tension detection mechanism.

[0034] Icons: 1-caching mechanism; 11-first frame; 12-first cache roller; 13-second frame; 14-second cache roller; 15-second frame; 16-driving assembly;

[0035] 2-tension adjustment mechanism; 21-first roller frame; 22-tension adjustment roller; 23-first driving member; 24-connecting plate;

[0036] 3-tension isolation mechanism; 31-power roller; 32-pressure roller; 33-second roller frame; 34-second driving member;

[0037] 4-first frame; 41-back plate; 42-roller;

[0038] 5- tension detection mechanism; 51- tension detection roller; 52- roller seat; 53- pressure detection member;

[0039] 6-impurity removal component; 61-magnetic bar;

[0040] 71-deviation correction roller; 72-flattening roller; 73-belt connection platform. DETAILED DESCRIPTION

[0041] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] like Figures 1 to 6 As shown, an embodiment of the utility model provides a conveying device for conveying strip materials; the conveying device includes: a buffer mechanism 1, a tension isolation mechanism 3 and a tension adjustment mechanism 2; the tension isolation mechanism 3 is used to isolate the tension of the strip material to form a tension interval on both sides of the tension isolation mechanism 3; a tension adjustment mechanism 2 is provided in each tension interval, and the tension adjustment mechanism 2 is used to adjust the tension of the strip material in the tension interval; the buffer mechanism 1 is used to buffer the strip material to adjust the conveying speed of the strip material on both sides of the buffer mechanism 1.

[0043] The conveying device provided in this embodiment is used to convey strip materials, which can be foil materials of lithium-ion batteries. The foil materials are divided into positive electrode foil materials and negative electrode foil materials. The conveying device can be used to convey positive electrode foil materials or negative electrode foil materials. Optionally, the strip materials can also be pole pieces, etc.

[0044] Normally, the conveying device is arranged between two adjacent work sections, and is used to convey the strip material from the previous work section to the next work section, and to adjust the speed difference of the strip material. Specifically, the conveying device includes a buffer mechanism 1, a tension isolation mechanism 3 and a tension adjustment mechanism 2. Among them, the tension isolation mechanism 3 can isolate the tension of the strip material, thereby forming two tension intervals on both sides of the tension isolation mechanism 3. For the convenience of description, along the conveying direction of the strip material, the tension interval upstream of the tension isolation mechanism 3 is the first interval, and the tension interval downstream of the tension isolation is the second interval. The tension of the strip material in the first interval and the tension of the strip material in the second interval can be different. By setting the tension isolation mechanism 3 to divide a plurality of tension intervals, the tension of the strip material in each tension interval can be conveniently adjusted, thereby preventing the conveying of the strip material from being affected by excessive or insufficient tension of the strip material. Each tension interval is provided with a tension adjustment mechanism 2, which is used to adjust the tension of the strip material in the tension interval, so as to avoid the strip material being broken due to excessive tension, or the strip material being fluctuated due to too low tension. The buffer mechanism 1 is used to buffer the strip material; as mentioned above, the conveying device is arranged between two adjacent sections, and since the processing speeds of the two sections for the strip material may be different, the speed difference between the two adjacent sections may cause the strip material to accumulate or break, and by arranging the buffer mechanism 1 to buffer the strip material, the speed of the strip material on both sides of the buffer mechanism 1 can be adjusted, thereby ensuring the conveying quality of the strip material.

[0045] The conveying device provided in the embodiment of the utility model isolates the tension of the strip material through the tension isolation mechanism 3, and cooperates with the tension adjustment mechanism 2 to adjust the tension of the strip material, and adjusts the speed of the strip material through the buffer mechanism 1. Compared with the prior art, it can eliminate the influence of the speed difference between two adjacent work sections on the strip material, thereby ensuring the conveying quality of the strip material.

[0046] The conveying device provided in the embodiment of the utility model is as follows Figure 1 and Figure 2 As shown, it also includes a first frame 4 , which has a back plate 41 , and the tension isolation mechanism 3 and the tension adjustment mechanism 2 are both arranged on the back plate 41 .

[0047] In this embodiment, the conveying device also includes a first frame 4, which is composed of a steel structure frame and a back plate 41, and the above-mentioned tension isolation mechanism 3 and tension adjustment mechanism 2 are both arranged on the back plate 41. Since the first frame 4 is only provided with one back plate 41, the tension isolation mechanism 3 and the tension adjustment mechanism 2 are both installed on the back plate 41 in a cantilever installation manner, thereby making the structure of the conveying device simpler and facilitating the operator to maintain the conveying device. Among them, the cantilever installation manner means that only one end of the tension isolation mechanism 3 and the tension adjustment mechanism 2 is connected to the back plate 41, and the other end is suspended.

[0048] The conveying device provided in the embodiment of the utility model is as follows Figure 1 and Figure 4 As shown, the tension adjustment mechanism 2 includes a first roller frame 21, a tension adjustment roller 22 and a first driving member 23; one end of the first roller frame 21 is rotatably disposed on the back plate 41; the tension adjustment roller 22 is rotatably disposed in the first roller frame 21, and the first driving member 23 drives the first roller frame 21 to rotate, so as to drive the tension adjustment roller 22 to swing around the rotation center of the first roller frame 21.

[0049] In this embodiment, the tension adjustment mechanism 2 includes a first roller frame 21, a tension adjustment roller 22 and a first driving member 23. Preferably, the first roller frame 21 is a square structure, one end of which in the left-right direction is rotatably connected to the back plate 41 through a rotating shaft, and the rotation center of the first roller frame 21 is located at one end in the up-down direction. The tension adjustment roller 22 is rotatably arranged in the first roller frame 21 and is located at one end of the first roller frame 21 in the up-down direction away from the rotation center of the first roller frame 21. In this way, the tension adjustment roller 22 can have a maximum swing amplitude and can realize the above-mentioned cantilever installation method. The first driving member 23 is used to drive the first roller frame 21 to rotate, thereby driving the tension adjustment roller 22 located on the first roller frame 21 to swing around the rotation center of the first roller frame 21. Among them, the above-mentioned up-down direction and left-right direction have been described in detail. Figure 1 The tension of the strip material is adjusted by the first roller frame 21 driving the tension adjustment roller 22 to swing, which can have a larger adjustment range in a smaller space, is convenient for layout, and is conducive to the trend of miniaturization of the equipment.

[0050] When in use, the strip material can be wound around the tension adjustment roller 22. Under the action of the first driving member 23 and the first roller frame 21, the tension adjustment roller 22 swings around the rotation center of the first roller frame 21, so that the strip material can be tensioned or relaxed, thereby adjusting the tension of the strip material.

[0051] It can be understood that, in this embodiment, the first roller frame 21 can also be slidably disposed on the back plate 41, and the purpose of adjusting the tension of the strip material in this embodiment can also be achieved by driving the first roller frame 21 to slide and thus drive the first roller frame 21 to move.

[0052] Optionally, in the present embodiment, the first driving member 23 is a cylinder having a cylinder end and a telescopic end. The cylinder end of the first driving member 23 is rotatably disposed on the back plate 41, and the piston end is connected to the rotating shaft of the first roller frame 21 through a connecting plate 24. Furthermore, the connecting plate 24 is rotatably disposed between the cylinder and the connecting plate 24 is fixedly disposed between the rotating shaft of the first roller frame 21. The first driving member 23 drives the rotating shaft of the first roller frame 21 to rotate by telescoping, thereby driving the tension adjustment roller 22 to swing.

[0053] It can be understood that, in this embodiment, the first driving member 23 can be a motor, which can also achieve the purpose of driving the first roller frame 21 to rotate in this embodiment.

[0054] Preferably, in this embodiment, the first driving member 23 and the first roller frame 21 are respectively located on two sides of the back plate 41, one side of the first roller frame 21 is the operating surface of the back plate 41, and the other side of the back plate is the back side. By arranging the first driving member 23 on the back side of the back plate 41, it is convenient for operators to perform maintenance, and the structure of the operating surface can be made simpler, which is conducive to the transportation of strip materials.

[0055] The conveying device provided in the embodiment of the utility model is as follows Figure 1 , Figure 2 and Figure 5 As shown, the tension isolation mechanism 3 includes a power roller 31 and a pressure roller 32; one end of the power roller 31 is rotatably disposed on the back plate 41; one end of the pressure roller 32 is rotatably disposed on the back plate 41; the power roller 31 and the pressure roller 32 are spaced apart, and the strip material can pass between the power roller 31 and the pressure roller 32, and when the strip material passes between the power roller 31 and the pressure roller 32, the pressure roller 32 can cooperate with the power roller 31 to press the strip material.

[0056] In this embodiment, the tension isolation mechanism 3 includes a power roller 31 and a pressure roller 32. The tension isolation mechanism 3 isolates the tension of the strip material by bringing the power roller 31 and the pressure roller 32 close to each other to press the strip material. The power roller 31 and the pressure roller 32 are both rotatably arranged on the back plate 41 at one end, and the other end is suspended in the air to achieve the above-mentioned cantilever installation method. The power roller 31 is provided with a motor to drive its rotation to provide power for the transportation of the pole piece. The motor of the power roller 31 is also arranged on the back of the back plate 41. The pressure roller 32 can approach or move away from the power roller 31 by sliding, or it can approach or move away from the tension roller by swinging as described above with reference to the tension adjustment roller 22. In this embodiment, it is preferred to adopt the pressure roller 32 to approach or move away from the power roller 31 by sliding, so as to facilitate the control of the tension between the power roller 31 and the tension roller, and prevent the strip material from being damaged by extrusion. Specifically, the tension isolation mechanism 3 also includes a second roller frame 33 and a second driving member 34. The second roller frame 33 is slidably arranged on the back plate 41 through a structure such as a slide rail or a slide groove. The pressure roller 32 is rotatably arranged in the second roller frame 33. The second driving member 34 such as a cylinder is provided to drive the second roller frame 33 to slide, so that the pressure roller 32 in the second roller frame 33 moves toward or away from the power roller 31, so that the pressure roller 32 cooperates with the power roller 31 to press the strip material, thereby realizing the tension isolation of the strip material.

[0057] The conveying device provided in the embodiment of the utility model is as follows Figure 1 and Figure 6 As shown, it also includes a tension detection mechanism 5 arranged corresponding to the tension adjustment mechanism 2, and the tension detection mechanism 5 is used to detect the tension information of the strip material.

[0058] In this embodiment, the conveying device further includes a tension detection mechanism 5 for detecting the tension information of the strip material. The tension of the strip material is detected by the tension detection mechanism 5 and cooperated with the tension adjustment mechanism 2 to achieve closed-loop adjustment of the tension of the strip material.

[0059] Specifically, the delivery device provided by the embodiment of the utility model is as follows: Figure 1 and Figure 6 As shown, the tension detection mechanism 5 includes a tension detection roller 51, a roller seat 52 and a pressure detection member 53; the tension detection roller 51 is rotatably disposed on the roller seat 52, and the pressure detection member 53 is disposed on the roller seat 52 and is used to detect pressure information of the roller seat 52.

[0060] In this embodiment, the tension detection mechanism 5 includes a tension detection roller 51, a roller seat 52 and a pressure detection member 53. The two ends of the tension detection roller 51 are rotatably disposed on the roller seat 52. When in use, the strip material can be wound around the tension detection roller 51. Since the strip material has a certain tension, the strip material can exert a pressure on the tension detection roller 51 when it is wound around the tension detection roller 51. This pressure will be transmitted to the roller seat 52. By detecting the pressure information received by the roller seat 52, the tension information of the strip material can be obtained. Among them, the above-mentioned pressure detection member 53 can be a pressure sensor or a weight sensor.

[0061] It is understandable that, in this embodiment, a pressure detection member 53 may be provided on the tension adjustment roller 22 or any other roller 42, which can also achieve the purpose of detecting the tension of the strip material in this embodiment.

[0062] The conveying device provided in the embodiment of the utility model is as follows Figure 1 and Figure 3 As shown, the cache mechanism 1 includes a first frame 11, a second frame 13, a second frame 15 and a driving assembly 16; the first frame 11 is slidably arranged on the second frame 15, and the second frame 13 is fixedly arranged on the second frame 15; the driving assembly 16 is connected to the first frame 11, and drives the first frame 11 to slide in a direction close to or away from the first frame 11; a first cache roller 12 is arranged in the first frame 11, and a second cache roller 14 corresponding to the first cache roller 12 is arranged in the second frame 13, and the strip material can be wound around the first cache roller 12 and the second cache roller 14.

[0063] In this embodiment, the cache mechanism 1 includes a first frame 11, a second frame 13, a second frame 15 and a driving assembly 16. The first frame 11 is slidably mounted on the second frame 15 by means of a slider and a slide rail or a slider and a slide groove. The second frame 13 is fixed on the second frame 15. By sliding the first frame 11, the first frame 11 can move toward or away from the second frame 13. The driving assembly 16 is used to drive the first frame 11 to slide on the second frame 15. The first frame 11 and the second frame 13 can be arranged in a front-to-back spacing manner, or in an upper-lower spacing manner. Preferably, the first frame 11 and the second frame 13 are arranged in an upper-lower spacing manner, so that less space is occupied. A first cache roller 12 is arranged in the first frame 11, and a second cache roller 14 is arranged in the second frame 13. The strip material can be wound around the first cache roller 12 and the second cache roller 14. The strip material can pass through the lower part of the second cache roller 14 arranged below and extend upward, and then wind out from the upper part of the first cache roller 12, that is, the strip material is in an "S" shape. When in use, the driving assembly 16 drives the first frame 11 to move toward or away from the second frame 13, thereby adjusting the speed of the strip material.

[0064] Preferably, in this embodiment, the cache mechanism 1 is arranged in the middle position of the conveying device. When the front end speed of the cache mechanism 1 is fast and the rear end speed is slow, the driving component 16 drives the first frame 11 to move away from the second frame 13, thereby adjusting the speed of the strip material; and when the rear end speed of the cache mechanism 1 is fast and the front end speed is slow, the driving component 16 drives the first frame 11 to move toward the second frame 13, thereby adjusting the speed of the strip material.

[0065] Preferably, in this embodiment, a plurality of first cache rollers 12 are provided in the first frame 11, and a plurality of second cache rollers 14 are provided in the second frame 13. The first cache rollers 12 and the second cache rollers 14 correspond to each other one by one, and the strip material can be wound in the manner of "second cache roller 14-first cache roller 12-second cache roller 14-first cache roller 12...". By providing a plurality of first cache rollers 12 and a plurality of second cache rollers 14, the adjustment range of the cache mechanism 1 can be increased, and the cache effect can be improved.

[0066] In this embodiment, the driving assembly 16 includes a motor, a screw and a screw nut. The screw nut is fixed on the first frame 11, the screw is inserted into the screw nut, the motor is connected to the screw, and the motor drives the screw to rotate, thereby driving the first frame 11 to slide on the second frame 15. The driving assembly 16 is driven by a screw structure, which is smoother and can provide a certain degree of protection for the strip material.

[0067] It is understandable that, in this embodiment, the driving assembly 16 may also be matched with a size and a rack, or a sprocket and a chain, which can also achieve the purpose of controlling the first frame 11 and the second frame 13 to move closer to or away from each other in this embodiment.

[0068] It can be understood that, in this embodiment, the purpose of strip material buffering can also be achieved by leaving part of the strip material suspended in the air.

[0069] As mentioned above, the power roller 31 is used to provide power for conveying the strip material. Preferably, the motor of the power roller 31 is equipped with an encoder for detecting the traveling speed of the strip material, so as to facilitate the adjustment of the buffer mechanism 1 and prevent the strip material from breaking.

[0070] The conveying device provided in the embodiment of the utility model is as follows Figure 1 and Figure 2 As shown, it also includes a plurality of rollers 42, which are used to control the running direction of the strip material, and all the rollers 42 are rotatably mounted on the back plate 41 in a cantilevered installation manner, that is, one end of the roller 42 is rotatably mounted on the back plate 41, and the other end is suspended, thereby simplifying the structure of the conveying device.

[0071] The conveying device provided in the embodiment of the utility model is as follows Figure 1 As shown, it also includes an impurity removal component 6, which is used to remove magnetic impurities on the surface of the strip material.

[0072] In this embodiment, in order to prevent magnetic impurities from damaging the strip material, the conveying device further includes a cleaning component 6 for removing magnetic impurities. Preferably, the cleaning component 6 includes two magnet bars 61 arranged at intervals, and the strip material can pass between the two magnet bars 61. When the strip material passes between the two magnet bars 61, the magnet bars 61 can absorb the magnetic substances on the surface of the strip material.

[0073] Optionally, in this embodiment, the impurity removal component 6 can also adopt a impurity removal method of blowing or negative pressure adsorption, such as an air nozzle or dust suction equipment connected to the air source, which can also achieve the purpose of removing magnetic impurities on the surface of the strip material in this embodiment.

[0074] Preferably, in this embodiment, a deviation-correcting roller 71 and a flattening roller 72 are further provided on the back plate 41 , wherein the deviation-correcting roller 71 is used for correcting the deviation of the strip material, and the flattening roller 72 is used for flattening the wrinkled strip material.

[0075] Preferably, in this embodiment, the conveying device is further provided with a thickness measuring mechanism for detecting the thickness of the strip material, and the thickness measuring mechanism can be provided at the rear end of the buffer mechanism 1. The rear end of the buffer mechanism 1 is also provided with a strip connection platform 73 for connecting two sections of strip material.

[0076] Another embodiment of the present invention further provides a battery production system, comprising the conveying device described in any of the above embodiments.

[0077] Preferably, in this embodiment, two groups of conveying devices are provided, and the lithium-ion batteries are divided into positive electrode sheets and negative electrode sheets. Among the two groups of conveying devices, one group is used to convey the materials of the positive electrode sheets, and the other group is used to convey the materials of the negative electrode sheets.

[0078] More preferably, the two groups of conveying devices are stacked up and down, so as to save space in the production workshop and facilitate the layout of the conveying devices and the battery production system.

[0079] The two groups of conveying devices may share a first frame 4 or may be provided with first frames 4 separately. In this embodiment, the former is preferably adopted, and a baffle may be selectively provided between the two groups of conveying devices to separate them.

[0080] Similarly, the cache mechanisms 1 of the two conveying devices can share a second rack 15, or they can be separately provided with second racks 15. In this embodiment, the latter is preferably used to avoid interference between the two. The battery production system is provided with a support platform for supporting the cache mechanism 1 located above and the above-mentioned thickness measuring mechanism.

[0081] The conveying device includes a plurality of functional rollers, such as the above-mentioned passing roller 42, the tension adjustment mechanism 2, the tension isolation mechanism 3, the flattening roller 72, the deviation correction roller 71, the first buffer roller 12 and the second buffer roller 14. In this embodiment, all functional rollers except the first buffer roller 12 and the second buffer roller 14 are installed in a cantilever manner. Since the two groups of conveying devices are stacked up and down, when all functional rollers except the first buffer roller 12 and the second buffer roller 14 are installed in a cantilever manner, the structures of the two groups of conveying devices are simpler and maintenance is more convenient. If back plates 41 are provided at both ends of the functional rollers, it is impossible to realize the setting mode of stacking the two groups of conveying devices up and down, because the operator cannot maintain the functional rollers.

[0082] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0083] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveying device for conveying strip materials, characterized in that: The conveying device comprises: a buffer mechanism (1), a tension isolation mechanism (3) and a tension adjustment mechanism (2); The tension isolation mechanism (3) is used to isolate the tension of the strip material, so as to form tension zones on both sides of the tension isolation mechanism (3); The tension adjustment mechanism (2) is provided in each of the tension intervals, and the tension adjustment mechanism (2) is used to adjust the tension of the strip material in the tension interval; The buffer mechanism (1) is used to buffer the strip material so as to adjust the conveying speed of the strip material on both sides of the buffer mechanism (1).

2. The conveying device according to claim 1, characterized in that It also comprises a first frame (4), wherein the first frame (4) has a back plate (41), and the tension isolation mechanism (3) and the tension adjustment mechanism (2) are both arranged on the back plate (41).

3. The conveying device according to claim 2, characterized in that: The tension adjustment mechanism (2) comprises a first roller frame (21), a tension adjustment roller (22) and a first driving member (23); One end of the first roller frame (21) is rotatably disposed on the back plate (41); The tension adjustment roller (22) is rotatably arranged in the first roller frame (21), and the first driving member (23) is connected to the first roller frame (21) and drives the first roller frame (21) to rotate, so as to drive the tension adjustment roller (22) to swing around the rotation center of the first roller frame (21).

4. The conveying device according to claim 2, characterized in that: The tension isolation mechanism (3) comprises a power roller (31) and a pressure roller (32); One end of the power roller (31) is rotatably mounted on the back plate (41); one end of the pressure roller (32) is rotatably mounted on the back plate (41); The power roller (31) and the pressure roller (32) are arranged at an interval, and the strip material can pass between the power roller (31) and the pressure roller (32). When the strip material passes between the power roller (31) and the pressure roller (32), the pressure roller (32) can cooperate with the power roller (31) to press the strip material.

5. The conveying device according to any one of claims 1 to 3, characterized in that: It also comprises a tension detection mechanism (5) arranged corresponding to the tension adjustment mechanism (2), and the tension detection mechanism (5) is used to detect the tension information of the strip material.

6. The conveying device according to claim 5, characterized in that The tension detection mechanism (5) comprises a tension detection roller (51), a roller seat (52) and a pressure detection member (53); The tension detection roller (51) is rotatably disposed on the roller seat (52), and the pressure detection element (53) is disposed on the roller seat (52) and is used to detect pressure information of the roller seat (52).

7. The conveying device according to claim 1, characterized in that: The cache mechanism (1) comprises a first frame (11), a second frame (13), a second frame (15) and a drive assembly (16); The first frame (11) is slidably mounted on the second frame (15), and the second frame (13) is fixedly mounted on the second frame (15); the driving assembly (16) is connected to the first frame (11), and drives the first frame (11) to slide in a direction approaching or moving away from the first frame (11); A first buffer roller (12) is provided in the first frame (11), and a second buffer roller (14) corresponding to the first buffer roller (12) is provided in the second frame (13), and the strip material can be wound around the first buffer roller (12) and the second buffer roller (14).

8. The conveying device according to claim 2, characterized in that: It also includes a plurality of rollers (42), and all of the rollers (42) are rotatably disposed on the back plate (41) at one end.

9. The conveying device according to claim 1, characterized in that: It also comprises an impurity removal component (6), wherein the impurity removal component (6) is used to remove magnetic impurities on the surface of the strip material.

10. A battery production system, characterized in that: It comprises the conveying device as described in any one of claims 1 to 9; the conveying device is arranged in two groups, and the two groups of the conveying devices are arranged in an upper and lower stack.

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