Belt conveying mechanism and lithium dipping and embedding device

Abstract

The embodiment of the utility model provides a tape conveying mechanism and a pre-lithium soaking and embedding device, and relates to the technical field of pole piece pre-lithium. The pre-lithium soaking and embedding device comprises a belt conveying mechanism, and the belt conveying mechanism comprises a rack, a mounting assembly, a first winding roller, a second winding roller and a driving assembly. The first winding roller and the second winding roller are arranged in parallel in a spaced and staggered mode, and a belt conveying cavity for a belt to penetrate through is formed between the first winding roller and the second winding roller. The driving assembly comprises a first driving part and a second driving part which are arranged on the rack, the first driving part is connected with the first mounting plate, and the second driving part is connected with the second mounting plate. The first winding roller and the second winding roller can move in the first direction, when consumption of the lithium solution in the box body is reduced, the first winding roller or the second winding roller can adaptively move by a certain distance in the first direction, it is guaranteed that the first winding roller and the second winding roller can be immersed in the lithium solution, and the device can be suitable for the lithium solutions with different capacities in the box body; and the adaptive capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode pre-lithium, in particular to a tape transport mechanism and an immersion pre-lithium device. Background Art

[0002] At present, in order to obtain a higher energy density of lithium-ion batteries, the irreversible lithium consumption during the first charge and discharge process can be replenished in advance with the help of lithium replenishment technology. The whole process is called electrode pre-lithiation. At present, the chemical electrode pre-lithiation method is generally immersion pre-lithiation. The negative electrode is immersed in the box lithium solution in the form of a roller serpentine belt. After a certain period of immersion, the negative electrode pre-lithiation is completed.

[0003] The inventors have found that some existing belt transport mechanisms require that the lithium liquid level in the box be able to immerse the upper and lower rows of rollers during pre-lithiation, so that the pre-lithiation effect of the pole piece running on the rollers can be best. However, this structure causes the amount of lithium liquid added to the box to be fixed and the amount of lithium solution added is the maximum each time the equipment is running. When the amount of lithium solution in the box cannot be at the maximum, the upper and lower rows of rollers will not be completely immersed, and the adaptability is poor. Utility Model Content

[0004] The utility model aims to provide a tape transport mechanism, which can ensure that the lithium solution can immerse the upper and lower rows of winding rollers when the lithium solution in the box is not at its maximum, thereby improving the adaptability.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a belt transport mechanism, comprising:

[0007] frame;

[0008] An installation assembly, the installation assembly comprising a first installation plate and a second installation plate arranged along a first direction;

[0009] A first winding roller, the first winding roller is rotatably disposed on the first mounting plate;

[0010] A second winding roller, the second winding roller is rotatably arranged on the second mounting plate, and the axis of the first winding roller is parallel to the axis of the second winding roller;

[0011] A driving assembly, the driving assembly comprising a first driving member and a second driving member arranged on the frame, the first driving member being connected to the first mounting plate, and the second driving member being connected to the second mounting plate;

[0012] The first winding roller and the second winding roller are parallel, spaced and staggered, and a belt-walking cavity is formed between the first winding roller and the second winding roller for the belt to pass through. The first driving member is used to drive the first mounting plate to move in the first direction, and the second driving member is used to drive the second mounting plate to move in the first direction to pull the belt into a serpentine shape.

[0013] In an optional embodiment, there are multiple first winding rollers, and the multiple first winding rollers are arranged on the first mounting plate in parallel and spaced along the second direction; there are also multiple second winding rollers, and the multiple second winding rollers are arranged on the second mounting plate in parallel and spaced along the second direction, and the multiple first winding rollers and the multiple second winding rollers are staggered, wherein the first direction, the second direction and the axial direction of the first winding rollers are perpendicular to each other.

[0014] In an optional embodiment, the first mounting plate includes a first connecting portion and a plurality of first extension portions, the plurality of first extension portions are arranged in parallel and spaced apart and are all fixedly connected to the first connecting portion, each first winding roller is mounted on a first extension portion, and two adjacent first extension portions and the first connecting portion together form a first making way opening for making way for the second winding roller.

[0015] In an optional embodiment, the second mounting plate includes a second connecting portion and a plurality of second extension portions, the plurality of second extension portions are arranged in parallel and spaced apart and are all fixedly connected to the second connecting portion, each second winding roller is mounted on a second extension portion, and two adjacent second extension portions and the second connecting portion together form a second making way opening for making way for the second winding roller.

[0016] In an optional embodiment, the first driving member includes a first driving motor, a first screw rod and a first nut. The first driving motor is installed on the frame, the first driving motor is connected to the first screw rod, the first nut is sleeved on the first screw rod, and the first mounting plate is fixedly connected to the first nut.

[0017] In an optional embodiment, the second driving member includes a second driving motor, a second screw rod and a second nut. The second driving motor is installed on the frame, the second driving motor is connected to the second screw rod, the second nut is sleeved on the second screw rod, and the second mounting plate is fixedly connected to the second nut.

[0018] In an optional embodiment, the tape transport mechanism further includes a guide assembly, the guide assembly includes a guide rail, and the first mounting plate and the second mounting plate are both slidably matched with the guide rail.

[0019] In the second aspect, the utility model provides a pre-lithium impregnation device, including a box and a tape transport mechanism of any one of the aforementioned embodiments, wherein the frame partially extends into the box, the first mounting plate, the second mounting plate, the first winding roller and the second winding roller are all arranged in the box, and the box is used to fill the lithium solution.

[0020] In an optional embodiment, the frame includes a cover plate and a fixed plate, the cover plate is fixedly connected to the fixed plate, the first drive member and the second drive member are installed on the cover plate, the cover plate is covered on the box body, the fixed plate extends into the box body, the cover plate is provided with a feed port and a discharge port, the feed port and the discharge port are spaced apart on the cover plate along the second direction, the feed port is used for allowing the strip to extend into the box body, and the discharge port is used for allowing the strip to extend out of the box body.

[0021] In an optional embodiment, the pre-lithium impregnation device further includes a lifting mechanism, which is connected to the box body, and a driving end of the lifting mechanism is connected to the frame, and the lifting mechanism is used to drive the frame to extend out of or into the box body.

[0022] The beneficial effects of the embodiments of the utility model are as follows: the embodiments of the utility model provide a tape transport mechanism and a pre-lithium impregnation device. The pre-lithium impregnation device includes a tape transport mechanism, which includes a frame, a mounting assembly, a first winding roller, a second winding roller and a driving assembly. The mounting assembly includes a first mounting plate and a second mounting plate arranged along a first direction, the first winding roller is rotatably arranged on the first mounting plate, the second winding roller is rotatably arranged on the second mounting plate, the axis of the first winding roller is parallel to the axis of the second winding roller, the first winding roller and the second winding roller are parallel, spaced and staggered, and a tape transport cavity for the strip to pass through is formed between the first winding roller and the second winding roller. The driving assembly includes a first driving member and a second driving member arranged on the frame, the first driving member is connected to the first mounting plate, and the second driving member is connected to the second mounting plate. The first driving member is used to drive the mounting plate to move along the first direction, and the second driving member is used to drive the second mounting plate to move along the first direction, so as to pull the strip into a serpentine shape. Both the first winding roller and the second winding roller can move in the vertical direction. When the consumption of lithium solution in the box body decreases, the first winding roller or the second winding roller located at the top can adaptively move downward for a certain distance to ensure that after the lifting mechanism moves the tape transport mechanism deep into the box body, the first winding roller and the second winding roller can be immersed in the lithium solution. It can be used for lithium solutions of different capacities in the box body, thereby improving the adaptability to working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a pre-lithium immersion device provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of the lifting mechanism driving the frame to extend out of the box body in the pre-lithium impregnation device provided by the embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of the pre-lithium immersion device provided by the embodiment of the utility model when the first mounting plate is at the bottom and the second mounting plate is at the top of the frame;

[0027] Figure 4 This is a structural schematic diagram of a second mounting plate located between the top and bottom of a frame when the first mounting plate is at the bottom of the pre-lithium immersion device provided by an embodiment of the utility model.

[0028] Icons: 1- pre-lithium immersion device; 100- tape transport mechanism; 110- frame; 111- first clearance groove; 112- second clearance groove; 113- fixed plate; 114- feed port; 115- discharge port; 116- cover plate; 120- first driving member; 121- first driving motor; 122- first screw rod; 123- first nut; 130- second driving member; 131- second driving motor; 132- The second screw rod; 133-the second nut; 140-the first mounting plate; 141-the first connecting portion; 142-the first extending portion; 143-the first making way opening; 150-the second mounting plate; 151-the second connecting portion; 152-the second extending portion; 153-the second making way opening; 160-the first winding roller; 170-the second winding roller; 180-the belt threading cavity; 190-the guide rail; 200-the box body; 300-the lifting mechanism. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected through an intermediate medium, or it can be the internal communication 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.

[0035] The specific structure of a tape transport mechanism and a pre-lithium immersion device provided by an embodiment of the utility model and the corresponding technical effects brought about by them are described in detail below in conjunction with the patent drawings.

[0036] Please refer to Figure 1-Figure 4 , this embodiment provides an immersion pre-lithiation device for pre-lithiation of a pole piece.

[0037] In this embodiment, the strip material is a pole piece, and the pre-lithium impregnation device 1 is applied to the negative electrode of the lithium-ion battery to replenish lithium, thereby achieving pre-lithium work on the pole piece, thereby improving the energy density of the lithium-ion battery.

[0038] Of course, in some other embodiments, the pre-lithium immersion device 1 can also be applied to other immersion industries.

[0039] The pre-lithium impregnation device 1 comprises a tape transport mechanism 100, a box 200 and a lifting mechanism 300. The lifting mechanism 300 is connected to the box 200, and the lifting mechanism 300 is also connected to the tape transport mechanism 100, and is used to drive the tape transport mechanism 100 to rise or fall, so as to realize the tape threading and impregnation functions of the electrode. The box 200 is used to fill the lithium solution to impregnate the electrode with pre-lithium.

[0040] It should be noted that the box 200 is placed on a horizontal plane, and the lifting mechanism 300 can drive the tape transport mechanism 100 to rise or fall in the vertical direction. When the lifting mechanism 300 drives the tape transport mechanism 100 to rise, the tape transport mechanism 100 extends out of the box 200. At this time, the staff can insert the electrode into the tape transport mechanism 100 to perform the electrode threading operation. When the lifting mechanism 300 drives the tape transport mechanism 100 to fall, the tape transport mechanism 100 extends into the box 200. At this time, the lithium solution in the box 200 can perform pre-lithium immersion operations on the electrode. In detail, the tape transport mechanism 100 includes a frame 110, a mounting assembly, a first winding roller 160, a second winding roller 170 and a drive assembly.

[0041] The mounting assembly includes a first mounting plate 140 and a second mounting plate 150 arranged along a first direction, a first winding roller 160 is rotatably disposed on the first mounting plate 140, and a second winding roller 170 is rotatably disposed on the second mounting plate 150. The axis of the first winding roller 160 is parallel to the axis of the second winding roller 170. The first winding roller 160 and the second winding roller 170 are parallel, spaced apart, and staggered, that is, the axial directions of the first winding roller 160 and the second winding roller 170 are the same, and they are staggered in both the horizontal and vertical directions. A tape-walking cavity is formed between the first winding roller 160 and the second winding roller 170 for the tape to pass through.

[0042] The driving assembly includes a first driving member 120 and a second driving member 130 disposed on the frame 110, wherein the first driving member 120 is connected to the first mounting plate 140, and the second driving member 130 is connected to the second mounting plate 150. The first driving member 120 is used to drive the mounting plate to move along a first direction, and the second driving member 130 is used to drive the second mounting plate 150 to move along the first direction, so as to pull the strip into a serpentine shape.

[0043] It should be noted that when the bottom of the box 200 is placed on a horizontal plane, Figure 2 For reference, the first direction mentioned above can be understood as the vertical direction. The first winding roller 160 and the second winding roller 170 in this embodiment are the two rows of winding rollers mentioned above. In some existing tape transport mechanisms 100, only one of the first winding roller 160 and the second winding roller 170 can move along the first direction, that is, when the first winding roller 160 or the second winding roller 170 moves downward to pull the strip into a serpentine shape, the position of the winding roller located above does not move. In order to ensure that the first winding roller 160 and the second winding roller 170 are both immersed in the lithium solution, the solution level in the box 200 must be located on the upper side of the upper winding roller. Such a tape transport mechanism 100 cannot adapt to different volumes of lithium solution in the box 200.

[0044] When the box 200 is placed horizontally on a horizontal surface, that is, Figure 2After the box is rotated 90 degrees clockwise or counterclockwise, the first direction can be understood as the horizontal direction.

[0045] For example, for the first working condition, after the number and relative spacing of the first winding roller 160 and the second winding roller 170 in this embodiment are determined, the actual length of the pole piece's tape running is determined. For example: the number of first winding rollers 160 is 10, the number of second winding rollers 170 is 11, and the spacing between the first winding roller 160 and the second winding roller 170 in the first direction is less than 500 mm, then the tape running length of the mechanism is 11 meters (or the tape storage capacity is 11 meters).

[0046] When the interval between the first winding roller 160 and the second winding roller 170 in the first direction is 50 mm, the belt running length of the mechanism becomes 1.1 meters (or the belt storage capacity is 1.1 meters).

[0047] The soaking process time of the same material is the same, if the pre-lithium time is 5 minutes. Then the belt speed of the 11-meter storage belt condition is 11 / 5=2.2m / min. Then the 8-hour production capacity is 8×6×2.2=1056 meters. If the customer does not require such a large production capacity, and the production capacity requirement is 105.6 meters, then the operator can adjust the spacing between the first winding roller 160 and the second winding roller 170 in the first direction to 50mm, that is, 8×60×(1.1 / 5)=105.6 meters. It can also reduce the configuration of the solution, only one-tenth of the original is needed, and the solution level drops, and the first winding roller 160 and the second winding roller 170 with a spacing of 50mm can be completely immersed, thus saving a lot of expensive liquid preparation costs.

[0048] For the second working condition: According to the above, when we need to adjust the immersion time, we can adjust the roller spacing, so that the walking speed changes and the immersion time also changes. In this embodiment, both the first winding roller 160 and the second winding roller 170 can move in the vertical direction, so they can be used for lithium solutions of different capacities in the box 200. That is, when the consumption of the lithium solution in the box 200 decreases, the first winding roller 160 or the second winding roller 170 located at the top can adaptively move downward for a certain distance to ensure that after the lifting mechanism 300 moves the walking mechanism 100 deep into the box 200, the first winding roller 160 and the second winding roller 170 can be immersed in the lithium solution.

[0049] In the pre-lithium impregnation device 1 provided in this embodiment, the frame 110 partially extends into the box 200, the first mounting plate 140, the second mounting plate 150, the first winding roller 160 and the second winding roller 170 are all arranged in the box 200 to ensure that the electrode is immersed in the lithium solution in the box 200, and the lifting mechanism 300 is installed in the box 200. The driving end of the lifting mechanism 300 is connected to the frame 110. The lifting mechanism 300 is used to drive the frame 110 to extend out or extend into the box 200 to facilitate the threading of the electrode.

[0050] It should be noted that there are multiple first winding rollers 160, and multiple first winding rollers 160 are arranged in parallel and spaced along the second direction on the first mounting plate 140. There are also multiple second winding rollers 170, and multiple second winding rollers 170 are arranged in parallel and spaced along the second direction on the second mounting plate 150. The multiple first winding rollers 160 and the multiple second winding rollers 170 are staggered, that is, each first winding roller 160 is arranged between adjacent second winding rollers 170, or each second winding roller 170 is arranged between two adjacent first winding rollers 160, so as to avoid interference between the first winding roller 160 and the second winding roller 170 during movement.

[0051] The first direction, the second direction, the axial direction of the first winding roller 160 , and the axial direction of the second winding roller 170 are perpendicular to each other.

[0052] It should be noted that before the pole piece is threaded, the first mounting plate 140 is located at the starting position, the axes of the multiple first winding rollers 160 are located on the first horizontal plane, and the axes of the multiple second winding rollers 170 are located on the second horizontal plane, wherein the first horizontal plane is set higher than the second horizontal plane, and a threading cavity 180 is formed between the first horizontal plane and the second horizontal plane, and the threading cavity 180 is used for the pole piece to pass through.

[0053] Before pulling the pole piece into a serpentine shape, the first driving member 120 can drive the first mounting plate 140 to move downward, and similarly, the second driving member 130 can drive the second mounting plate 150 to move downward synchronously with the first mounting plate 140. At this time, it can be ensured that the first horizontal plane is still higher than the second horizontal plane, and then when the second mounting plate 150 moves to the preset position, the second driving member 130 stops moving.

[0054] It should be noted that the preset position at this time can be determined according to the amount of lithium solution in the box 200, as long as it can be ensured that after the lifting mechanism 300 drives the frame 110 to extend into the box 200, the lithium solution can completely immerse the winding pole piece between the first winding roller 160 and the second winding roller 170.

[0055] Furthermore, the first driving member 120 continues to drive the first mounting plate 140 to move downward, and the first mounting plate 140 simultaneously drives the multiple first winding rollers 160 to move downward in the vertical direction to pull the pole piece in the threading cavity 180 downward. When the first mounting plate 140 moves to the extreme position, the plane where the axes of the multiple first winding rollers 160 are located is lower than the plane where the axes of the multiple second winding rollers 170 are located in the vertical direction. At this time, the pole piece is arranged in a winding shape between the multiple first winding rollers 160 and the second winding rollers 170.

[0056] In this embodiment, one end of the first winding roller 160 is mounted on the first mounting plate 140 and the other end is suspended. One end of the second winding roller 170 is mounted on the second mounting plate 150 and the other end is also suspended to facilitate the threading of the pole piece.

[0057] Of course, in some other optional embodiments, the connection form of the first winding roller 160 and the first mounting plate 140 and the connection form of the second winding roller 170 and the second mounting plate 150 are not limited to this, and other connection forms may also be used. For example, the number of the first mounting plates 140 is two, and the two ends of the first winding roller 160 are respectively connected to the two first mounting plates 140. Similarly, the number of the second mounting plates 150 may also be two, and the two ends of the second winding roller 170 may also be respectively connected to the two second mounting plates 150.

[0058] In this embodiment, the first mounting plate 140 includes a first connecting portion 141 and a plurality of first extension portions 142. The plurality of first extension portions 142 are arranged in parallel and spaced apart and are all fixedly connected to the first connecting portion 141. Each first winding roller 160 is mounted on a first extension portion 142. Two adjacent first extension portions 142 and the first connecting portion 141 jointly form a first making way opening 143 for making way for the second winding roller 170. The first connecting portion 141 is connected to the first driving member 120. In order to ensure the connection strength between the first connecting portion 141 and the first extension portion 142, the first connecting portion 141 and the first extension portion 142 are integrally formed.

[0059] Similarly, the second mounting plate 150 includes a second connecting portion 151 and a plurality of second extension portions 152. The plurality of second extension portions 152 are arranged in parallel and spaced apart and are all fixedly connected to the second connecting portion 151. Each second winding roller 170 is mounted on a second extension portion 152. Two adjacent second extension portions 152 and the second connecting portion 151 together form a second making way opening 153 for making way for the second winding roller 170.

[0060] In detail, in the initial position, that is, when the pole piece is ready to be threaded, the first connecting portion 141 is located at the lower side of the second connecting portion 151, and the plurality of first winding rollers 160 are located at the upper side of the second winding roller 170, wherein the first make way opening 143 between two adjacent first extension portions 142 has a second extension portion 152, that is, the second winding roller 170 is located in the first make way opening 143, and the second make way opening 153 between two adjacent second extension portions 152 has a first extension portion 142, that is, the first winding roller 160 is located in the second make way opening 153.

[0061] In detail, the first driving member 120 includes a first driving motor 121, a first screw rod 122 and a first nut 123. The first driving motor 121 is installed on the frame 110. The first driving motor 121 is connected to the first screw rod 122. The first nut 123 is sleeved on the first screw rod 122. The first nut 123 is threadedly connected to the first screw rod 122. The first mounting plate 140 is fixedly connected to the first nut 123.

[0062] When the first driving motor 121 drives the first screw rod 122 to rotate, the first nut 123 can move along the axial direction of the first screw rod 122. The axial direction of the first screw rod 122 is parallel to the first direction, that is, the axial direction of the first screw rod 122 is a vertical direction. Therefore, the first mounting plate 140 can move in the vertical direction along with the first nut 123, thereby realizing the vertical movement of the first winding roller 160.

[0063] Similar to the above, in this embodiment, the second driving member 130 includes a second driving motor 131, a second screw rod 132 and a second nut 133. The second driving motor 131 is installed on the frame 110. The second driving motor 131 is connected to the second screw rod 132. The second nut 133 is sleeved on the second screw rod 132. The second nut 133 is threadedly connected to the second screw rod 132. The second mounting plate 150 is fixedly connected to the second nut 133.

[0064] Therefore, when the second drive motor 131 drives the second screw rod 132 to rotate, the second nut 133 can move along the axial direction of the second screw rod 132. The axial direction of the second screw rod 132 is parallel to the first direction, that is, the axial direction of the second screw rod 132 is a vertical direction. Therefore, the second mounting plate 150 can move in the vertical direction along with the second nut 133, thereby realizing the vertical movement of the second winding roller 170.

[0065] In this embodiment, a first give way groove 111 and a second give way groove 112 are provided on the frame 110, and the first give way groove 111 and the second give way groove 112 both extend along the first direction, that is, the first give way groove 111 and the second give way groove 112 both extend along the vertical direction, wherein the first screw rod 122 and the first mounting plate 140 are arranged on both sides of the frame 110 opposite to each other, and the first nut 123 passes through the first give way groove 111 and is fixedly connected with the first mounting plate 140.

[0066] The second screw rod 132 and the second mounting plate 150 are also arranged on two sides of the frame 110 opposite to each other, and the second nut 133 passes through the second clearance groove 112 and is fixedly connected to the second mounting plate 150 .

[0067] Optionally, in order to ensure the stability of the vertical movement of the first mounting plate 140 and the second mounting plate 150, in the present embodiment, the tape transport mechanism 100 further includes a guide assembly, which includes a guide rail 190, wherein the first mounting plate 140 and the second mounting plate 150 both slideably cooperate with the guide rail 190.

[0068] In detail, in this embodiment, the number of guide rails 190 is four, and the four guide rails 190 are arranged on the frame 110 at intervals along the second direction. The first mounting plate 140 slides with at least one of the four guide rails 190, and the second mounting plate 150 also slides with at least one of the four guide rails 190.

[0069] Optionally, the guide assembly also includes a first slider and a second slider, the first slider is connected to the first mounting plate 140, the first mounting plate 140 slides with the guide rail 190 through the first slider, the second slider is connected to the second mounting plate 150, and the second mounting plate 150 slides with the guide rail 190 through the second slider.

[0070] In some optional embodiments, the number of first sliders is four and they respectively slide with the four guide rails 190, the first mounting plate 140 slides with the four guide rails 190 through the four first sliders, the number of second sliders is also four and they slide with the four guide rails 190, and the second mounting plate 150 slides with the four guide rails 190 through the four second sliders.

[0071] Optionally, in this embodiment, the frame 110 includes a cover plate 116 and a fixed plate 113, the cover plate 116 is fixedly connected to the fixed plate 113, the first driving member 120 and the second driving member 130 are installed on the dry plate, the cover plate 116 is used to cover the box body 200 to seal the box body 200 and prevent external foreign matter from entering the lithium solution, and the fixed plate 113 is extended into the box body 200.

[0072] It should be noted that the first clearance groove 111 and the second clearance groove 112 are disposed on the fixing plate 113 , and the guide rail 190 is also fixedly mounted on the fixing plate 113 .

[0073] In detail, in this embodiment, the cover plate 116 is also provided with a feed port 114 and a discharge port 115, which are arranged on the cover plate 116 at intervals along the second direction. The feed port 114 is used for allowing the strip to extend into the box body 200, and the discharge port 115 is used for allowing the strip to extend out of the box body 200.

[0074] In summary, the embodiment of the utility model provides a tape transport mechanism 100 and an impregnation pre-lithium device 1. The impregnation pre-lithium device 1 includes a tape transport mechanism 100, and the tape transport mechanism 100 includes a frame 110, a mounting assembly, a first winding roller 160, a second winding roller 170 and a driving assembly. The mounting assembly includes a first mounting plate 140 and a second mounting plate 150 arranged along a first direction, the first winding roller 160 is rotatably disposed on the first mounting plate 140, the second winding roller 170 is rotatably disposed on the second mounting plate 150, the axis of the first winding roller 160 is parallel to the axis of the second winding roller 170, the first winding roller 160 and the second winding roller 170 are parallel, spaced and staggered, and a tape transport cavity for the strip to pass through is formed between the first winding roller 160 and the second winding roller 170. The driving assembly includes a first driving member 120 and a second driving member 130 arranged on the frame 110, the first driving member 120 is connected to the first mounting plate 140, and the second driving member 130 is connected to the second mounting plate 150. The first driving member 120 is used to drive the mounting plate to move along the first direction, and the second driving member 130 is used to drive the second mounting plate 150 to move along the first direction, so as to pull the strip into a serpentine shape. The first winding roller 160 and the second winding roller 170 can both move in the vertical direction. When the consumption of the lithium solution in the box 200 is reduced, the first winding roller 160 or the second winding roller 170 located above can adaptively move downward for a certain distance, so as to ensure that after the lifting mechanism 300 moves the tape transport mechanism 100 deep into the box 200, the first winding roller 160 and the second winding roller 170 can both be immersed in the lithium solution, and can be suitable for lithium solutions of different capacities in the box 200, thereby improving the adaptability to working conditions.

[0075] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tape transport mechanism, characterized in that: include: frame; A mounting assembly, the mounting assembly comprising a first mounting plate and a second mounting plate arranged along a first direction; a first winding roller, the first winding roller being rotatably disposed on the first mounting plate; a second winding roller, the second winding roller being rotatably disposed on the second mounting plate, the axis of the first winding roller being parallel to the axis of the second winding roller; A driving assembly, the driving assembly comprising a first driving member and a second driving member disposed on the frame, the first driving member being connected to the first mounting plate, and the second driving member being connected to the second mounting plate; The first winding roller and the second winding roller are arranged in parallel, spaced apart and staggered, and a tape-walking cavity for the tape to pass through is formed between the first winding roller and the second winding roller. The first driving member is used to drive the first mounting plate to move along the first direction, and the second driving member is used to drive the second mounting plate to move along the first direction, so as to pull the tape into a serpentine shape.

2. The tape transport mechanism according to claim 1, characterized in that: There are multiple first winding rollers, and multiple first winding rollers are arranged on the first mounting plate in parallel and spaced along the second direction; there are also multiple second winding rollers, and multiple second winding rollers are arranged on the second mounting plate in parallel and spaced along the second direction, and multiple first winding rollers and multiple second winding rollers are staggered, wherein the first direction, the second direction and the axial direction of the first winding roller are perpendicular to each other.

3. The tape transport mechanism according to claim 2, characterized in that: The first mounting plate includes a first connecting portion and a plurality of first extending portions, wherein the plurality of first extending portions are arranged in parallel and spaced apart and are all fixedly connected to the first connecting portion, each of the first winding rollers is mounted on one of the first extending portions, and two adjacent first extending portions and the first connecting portion together form a first making way opening for making way for the second winding roller.

4. The tape transport mechanism according to claim 2, characterized in that: The second mounting plate includes a second connecting portion and a plurality of second extending portions, wherein the plurality of second extending portions are arranged in parallel and spaced apart and are all fixedly connected to the second connecting portion, wherein each second winding roller is mounted on a second extending portion, and two adjacent second extending portions and the second connecting portion together form a second making way opening for making way for the second winding roller.

5. The tape transport mechanism according to claim 1, characterized in that: The first driving member includes a first driving motor, a first screw rod and a first nut. The first driving motor is installed on the frame. The first driving motor is connected to the first screw rod. The first nut is sleeved on the first screw rod. The first mounting plate is fixedly connected to the first nut.

6. The tape transport mechanism according to claim 1, characterized in that: The second driving member includes a second driving motor, a second screw rod and a second nut. The second driving motor is installed on the frame. The second driving motor is connected to the second screw rod. The second nut is sleeved on the second screw rod. The second mounting plate is fixedly connected to the second nut.

7. The tape transport mechanism according to claim 1, characterized in that: The tape transport mechanism further comprises a guide assembly, wherein the guide assembly comprises a guide rail, and the first mounting plate and the second mounting plate are both slidably matched with the guide rail.

8. A pre-lithium immersion device, characterized in that: It comprises a box and the tape transport mechanism according to any one of claims 1 to 7, wherein the frame partially extends into the box, the first mounting plate, the second mounting plate, the first winding roller and the second winding roller are all arranged in the box, and the box is used to fill the lithium solution.

9. The pre-lithium immersion device according to claim 8, characterized in that: The frame includes a cover plate and a fixed plate, the cover plate is fixedly connected to the fixed plate, the first driving member and the second driving member are installed on the cover plate, the cover plate is covered on the box body, the fixed plate extends into the box body, the cover plate is provided with a feed port and a discharge port, the feed port and the discharge port are spaced apart on the cover plate along the second direction, the feed port is used for allowing the strip to extend into the box body, and the discharge port is used for allowing the strip to extend out of the box body.

10. The pre-lithium immersion device according to claim 8, characterized in that: The pre-lithium impregnation device further includes a lifting mechanism, which is connected to the box body, and a driving end of the lifting mechanism is connected to the frame, and the lifting mechanism is used to drive the frame to extend out of or into the box body.

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