Lithium ion battery tab production coating equipment

Abstract

The invention provides lithium ion battery tab production film coating equipment, and relates to the technical field of film coating equipment. The film laminating device comprises a bottom plate, first supports, a film laminating roller, a material guide plate, a second support and a winding roller, the first supports are symmetrically and fixedly connected to one end of the top face of the bottom plate, the film laminating roller is rotationally connected to the top end surface of the first supports, and the material guide plate is fixedly connected to one side wall of the first supports; the second supports are symmetrically fixed to the top face of the end, away from the first support, of the bottom plate. By arranging the curing cylinder and the cooling plate, the battery tab, passing through the bottom surface of the curing cylinder, on the top surface of the material guide plate can be heated and cured by the curing cylinder, and every time the battery tab with heat passes through the position below a temperature sensor, a motor can drive a turnover shaft to rotate, so that the curing cylinder is turned over to enable the top surface of the cooling plate to face downwards; and therefore, heating curing and cooling are matched for use, and the problems of low product quality and performance due to long time interval are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coating equipment, in particular to a coating equipment for producing a lithium ion battery tab. Background Art

[0002] Lithium-ion battery tabs are metal conductors that lead the positive and negative electrodes from the lithium-ion battery cells. They are generally made of metal foil, and common materials include aluminum and copper. The role of tabs is crucial, mainly to achieve the effective connection between the electrochemical reaction inside the battery and the external circuit. In the production process of lithium-ion battery tabs, coating is an important process link. Coating can effectively protect the surface of the tabs and prevent them from being oxidized, corroded and mechanically damaged during production, transportation and use. At the same time, coating can also improve the compatibility between the tabs and the electrolyte, reduce the occurrence of side reactions, and improve the cycle performance and stability of the battery.

[0003] For example, a Chinese patent with announcement number CN116344956B discloses a lithium-ion battery tab production coating device, including a material unloading and leveling part, the material unloading and leveling part includes a base, a winding frame is arranged on the top of the base, a preheating box connected to the top of the base is arranged on the outside of the winding frame, and a correction rod is rotatably connected inside the preheating box for straightening the external metal belt. Although it solves the problem of "due to the thin thickness and soft texture of the film, in order to ensure the alignment and fit of the metal belt and the film, the film needs to be cut in advance, and the metal belt and the cut film are placed on the mold during the film coating process. The whole operation is complicated and not conducive to automated production. However, the traditional film-coating equipment usually sets the heating device and the cooling device in different stations. After the heating and curing, the tab needs to be transferred or transported to the cooling area for cooling and shaping. The discontinuity of temperature change can easily lead to unstable product quality. The tab will experience a short temperature fluctuation in the process of transferring from the heating area to the cooling area, which may cause changes in the performance of the coating material, such as uneven crystallinity and uneven internal stress distribution, thus affecting the final quality and performance of the tab.

[0004] To this end, a lithium-ion battery tab production coating device is proposed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a lithium-ion battery tab production coating device, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lithium-ion battery pole ear production coating equipment, including a base plate, a first bracket, a coating roller, a guide plate, a second bracket, and a winding roller, the first bracket being symmetrically fixedly connected to one end of the top surface of the base plate, the coating roller being rotatably connected to the top surface of the first bracket, the guide plate being fixedly connected to one side wall of the first bracket, the second bracket being symmetrically fixed to the top surface of one end of the base plate away from the first bracket, the winding roller being rotatably connected to the top outer surface of the second bracket, the top surface of the guide plate being provided with a heating component for heating and curing the battery pole ear, the heating component comprising a curing cylinder, a heating groove, and a resistance wire, the top surface of the guide plate being provided with a cooling component for cooling the heated battery pole ear, the cooling component comprising a cooling water tank, a cooling plate, an annular groove, and a cooling pipe, the top surface of the guide plate being provided with a flipping component for converting the heating component into a cooling component, the flipping component comprising a support frame, a flipping axis, and a temperature sensor.

[0009] Preferably, the bottom surface of the curing cylinder is located on the top surface of the guide plate, the heating groove is opened inside the curing cylinder, the resistance wires are equidistantly distributed on the inner wall of the heating groove, the top surface of the curing cylinder is fixedly connected with a heat insulation plate, the cooling water tank is fixed on the top surface of the heat insulation plate, and the bottom surface of the curing cylinder is located on the top surface of the guide plate, which can ensure that the pole ear is in full contact with the curing cylinder during the conveying process of the guide plate, thereby achieving uniform heating and curing, improving the heating effect and the coating quality, and the top surface of the curing cylinder is fixedly connected with a heat insulation plate, which effectively prevents the heat inside the curing cylinder from dissipating upward, improves the energy utilization efficiency, reduces the energy consumption, protects the cooling water tank above, avoids it from being affected by high temperature, and prolongs the service life of the cooling water tank and related components. Due to the isolation of the heat insulation plate, the cooling water tank will not be disturbed by the high temperature of the curing cylinder, and can stably provide cooling medium for the cooling component, thereby ensuring the stability and reliability of the cooling effect.

[0010] Preferably, the cooling plate is fixedly connected to the top surface of the cooling water tank, an annular groove is opened inside the cooling plate, a cooling pipe is fixedly connected to the inner wall of the annular groove, the cooling pipe is connected to the cooling water tank through a water pump, and the cooling plate is fixedly connected to the top surface of the cooling water tank, which shortens the transmission distance of the cooling medium between the cooling pipe and the cooling water tank and improves the cooling efficiency. The annular groove increases the contact area between the cooling pipe and the cooling plate, which is beneficial to the rapid transfer of heat to the cooling medium in the cooling pipe. The annularly distributed cooling pipe can more evenly cool the pole ears passing under the cooling plate, avoid local uneven cooling, and ensure the consistency of the pole ear cooling effect.

[0011] Preferably, the support frame is symmetrically fixedly connected to the top surface of the material guide plate, the flip shaft is rotatably connected between the two support frames, the temperature sensor is fixed to the middle part of the bottom surface of the flip shaft, a protrusion is fixedly connected between the middle part of the flip shaft and the curing cylinder, one end of the flip shaft is fixedly connected to the first bevel gear, a motor is provided on one side of the material guide plate, the output end of the motor is fixedly connected to the support shaft, the top end of the support shaft is fixedly connected to the second bevel gear, the second bevel gear is meshingly connected with the first bevel gear, providing stable support for the flip shaft, ensuring that it can rotate smoothly, thereby driving the curing cylinder to flip, the symmetrical support frame makes the supporting force on the flip shaft evenly distributed, reduces shaking and unstable factors during rotation, and improves the accuracy and reliability of flipping.

[0012] Preferably, the top of the support frame is arc-shaped, and a guide groove is provided on the top outer surface of the support frame, and a supporting slider is slidably connected to the inner wall of the guide groove, and the outer surface of one end of the supporting slider is fixed to the end face of the curing cylinder. The arc-shaped support frame structure can reduce the obstruction to the flipping of the curing cylinder, making the flipping process smoother, reducing mechanical wear and energy loss, and the top outer surface of the support frame is provided with a guide groove, and the inner wall of the guide groove is slidably connected to the supporting slider, and the outer surface of one end of the supporting slider is fixed to the end face of the curing cylinder. When the curing cylinder is flipped, the cooperation of the guide groove and the supporting slider provides a stable guide for the curing cylinder, ensuring its flipping path is accurate, avoiding flipping deviation, sharing the pressure that the curing cylinder is borne only by the support of the protrusion when flipping, making the force on the curing cylinder more uniform, and improving the stability and reliability of the structure.

[0013] Preferably, a bottom surface of one side of the guide plate is fixedly connected to an L-shaped metal seat, and a bottom surface of the motor is fixedly connected to a top surface of the metal seat to maintain the stability of the motor during use.

[0014] Preferably, the curing cylinder is semicircular with the arc surface facing downward, so that when the curing cylinder is turned over, the arc surface can also fit and heat the battery tabs being transported.

[0015] (III) Beneficial effects

[0016] The present invention provides a lithium-ion battery tab production coating device, which has the following beneficial effects:

[0017] 1. Through the setting of curing cylinder and cooling plate, the battery tabs on the top of the guide plate passing through the bottom of the curing cylinder can be heated and cured by the curing cylinder. Whenever the hot battery tabs pass under the temperature sensor, the motor can drive the flip shaft to rotate, so that the curing cylinder is flipped with the top of the cooling plate facing downward, thereby realizing the coordinated use of heating, curing and cooling, avoiding the problem of poor product quality and performance due to long intervals.

[0018] 2. By providing guide grooves on the surfaces of two support frames and supporting sliders fixed on the side walls of the curing tube, both ends of the curing tube can be supported and guided when it is flipped, avoiding the problem of insufficient stability caused by using only protrusions for support. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 It is a schematic structural diagram of the curing cylinder and the turning shaft of the present invention;

[0022] Figure 4 It is a schematic diagram of the assembly structure of the heating component and the cooling component of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the cooling plate of the present invention turned downward.

[0024] Among them, 1. bottom plate; 2. first bracket; 3. laminating roller; 4. guide plate; 5. second bracket; 6. winding roller; 10. heat insulation board;

[0025] Heating components: 7. Curing cylinder; 8. Heating tank; 9. Resistance wire;

[0026] Cooling components: 11. Cooling water tank; 12. Cooling plate; 13. Annular groove; 14. Cooling pipe;

[0027] Flip assembly: 15, support frame; 16, flip shaft; 17, temperature sensor; 18, bump; 19, first bevel gear; 20, motor; 21, support shaft; 22, second bevel gear; 23, metal seat; 24, support slider; 25, guide groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0029] Example:

[0030] like Figure 1-Figure 5As shown, an embodiment of the present invention provides a lithium-ion battery pole ear production coating equipment, including a bottom plate 1, a first bracket 2, a coating roller 3, a guide plate 4, a second bracket 5, and a winding roller 6. The first bracket 2 is symmetrically fixedly connected to one end of the top surface of the bottom plate 1, the coating roller 3 is rotatably connected to the top surface of the first bracket 2, the guide plate 4 is fixedly connected to a side wall of the first bracket 2, the second bracket 5 is symmetrically fixed to the top surface of one end of the bottom plate 1 away from the first bracket 2, and the winding roller 6 is rotatably connected to the top outer surface of the second bracket 5. The top surface of the guide plate 4 is provided with a heating component for heating and curing the battery pole ear, the heating component includes a curing cylinder 7, a heating groove 8, and a resistance wire 9. The top surface of the guide plate 4 is provided with a cooling component for cooling the heated battery pole ear, the cooling component includes a cooling water tank 11, a cooling plate 12, an annular groove 13, and a cooling pipe 14. The top surface of the guide plate 4 is provided with a flip component for converting the heating component into a cooling component, and the flip component includes a support frame 15, a flip shaft 16, a temperature sensor 1 7. By setting the curing barrel 7 and the cooling plate 12, the battery pole ear on the top surface of the guide plate 4 passing through the bottom surface of the curing barrel 7 can be heated and cured by the curing barrel 7. Whenever the battery pole ear with heat passes under the temperature sensor 17, the motor 20 can be driven to rotate with the flip shaft 16, so that the curing barrel 7 is flipped so that the top surface of the cooling plate 12 is facing down, thereby realizing the coordinated use of heating, curing and cooling. When the battery pole ear passes through the bottom surface of the curing barrel 7 on the top surface of the guide plate 4, it can be quickly and evenly heated and cured by the curing barrel 7. Whenever the battery pole ear carrying heat passes under the temperature sensor 17, this signal will trigger the motor 20 to operate, drive the flip shaft 16 to rotate, and then prompt the curing barrel 7 to flip, so that the top surface of the cooling plate 12 is facing down, realizing the close coordination and seamless connection of the heating, curing and cooling links, effectively avoiding the problems of product quality degradation and poor performance caused by too long an interval time, and avoiding the problems of poor product quality and performance caused by a long interval time.

[0031] The cooling water tank 11 and the cooling pipe 14 are connected via a circulating water pump.

[0032] Specifically, the bottom surface of the curing cylinder 7 is located on the top surface of the material guide plate 4, the heating groove 8 is opened inside the curing cylinder 7, the resistance wires 9 are equidistantly distributed on the inner wall of the heating groove 8, the top surface of the curing cylinder 7 is fixedly connected with the insulation board 10, and the cooling water tank 11 is fixed on the top surface of the insulation board 10.

[0033] The battery pole ear to be processed passes through the bottom surface of the curing cylinder 7 on the guide plate 4. During the process, the resistance wires 9 evenly distributed in the heating groove 8 are energized and heated to heat and cure the battery pole ear passing through the bottom surface of the curing cylinder 7. When the hot battery pole ear passes under the temperature sensor 17, the temperature sensor 17 detects the temperature and sends a signal. After receiving the signal, the motor 20 drives the flip shaft 16 to rotate, so that the curing cylinder 7 is flipped, and the top surface of the cooling plate 12 faces downward. The flipped battery pole ear immediately arrives under the cooling plate 12 for cooling treatment. The bottom surface of the curing cylinder 7 is located on the top surface of the guide plate 4, which can ensure The pole ear is in full contact with the curing cylinder 7 during the conveying process of the guide plate 4, achieving uniform heating and curing, improving the heating effect and the coating quality. The top surface of the curing cylinder 7 is fixedly connected with a heat insulation plate 10, which effectively prevents the heat inside the curing cylinder 7 from dissipating upward, improves energy utilization efficiency, reduces energy consumption, protects the cooling water tank 11 above, avoids it from being affected by high temperature, and extends the service life of the cooling water tank 11 and related components. Due to the isolation of the heat insulation plate 10, the cooling water tank 11 will not be disturbed by the high temperature of the curing cylinder 7, and can stably provide cooling medium for the cooling component, ensuring the stability and reliability of the cooling effect.

[0034] Specifically, the cooling plate 12 is fixedly connected to the top surface of the cooling water tank 11 , an annular groove 13 is provided inside the cooling plate 12 , a cooling pipe 14 is fixedly connected to the inner wall of the annular groove 13 , and the cooling pipe 14 is connected to the cooling water tank 11 through a water pump.

[0035] The cooling plate 12 is fixedly connected to the top surface of the cooling water tank 11, which shortens the transmission distance of the cooling medium between the cooling pipe 14 and the cooling water tank 11 and improves the cooling efficiency. The annular groove 13 increases the contact area between the cooling pipe 14 and the cooling plate 12, which is beneficial to the rapid transfer of heat to the cooling medium in the cooling pipe 14. The annularly distributed cooling pipe 14 can more evenly cool the pole ear passing under the cooling plate 12, avoiding local uneven cooling and ensuring the consistency of the pole ear cooling effect.

[0036] Specifically, the support frame 15 is symmetrically fixedly connected to the top surface of the guide plate 4, the flip shaft 16 is rotatably connected between the two support frames 15, the temperature sensor 17 is fixed to the middle of the bottom surface of the flip shaft 16, a bump 18 is fixedly connected between the middle part of the flip shaft 16 and the curing cylinder 7, one end of the flip shaft 16 is fixedly connected to the first bevel gear 19, a motor 20 is provided on one side of the guide plate 4, the output end of the motor 20 is fixedly connected to the support shaft 21, the top end of the support shaft 21 is fixedly connected to the second bevel gear 22, and the second bevel gear 22 is meshingly connected to the first bevel gear 19.

[0037] The flip shaft 16 is provided with stable support to ensure that it can rotate smoothly, thereby driving the curing cylinder 7 to flip. The symmetrical support frame 15 makes the supporting force of the flip shaft 16 evenly distributed, reduces the shaking and unstable factors during the rotation process, and improves the accuracy and reliability of the flip.

[0038] Specifically, the top of the support frame 15 is arc-shaped, and a guide groove 25 is provided on the top outer surface of the support frame 15. A support slider 24 is slidably connected to the inner wall of the guide groove 25, and the outer surface of one end of the support slider 24 is fixed to the end surface of the curing cylinder 7.

[0039] The arc-shaped support frame 15 structure can reduce the obstruction to the flipping of the curing cylinder 7, make the flipping process smoother, reduce mechanical wear and energy loss, and a guide groove 25 is provided on the top outer surface of the support frame 15. The inner wall of the guide groove 25 is slidably connected with a support slider 24. The outer surface of one end of the support slider 24 is fixed on the end face of the curing cylinder 7. When the curing cylinder 7 is flipped, the cooperation of the guide groove 25 and the support slider 24 provides a stable guide for the curing cylinder 7, ensuring that its flipping path is accurate and avoiding flipping deviation, sharing the pressure that the curing cylinder 7 only relies on the support of the protrusion 18 when flipping, making the force on the curing cylinder 7 more uniform and improving the stability and reliability of the structure.

[0040] Specifically, an L-shaped metal seat 23 is fixedly connected to the bottom surface of one side of the guide plate 4 , and the bottom surface of the motor 20 is fixedly connected to the top surface of the metal seat 23 to maintain the stability of the motor 20 in use.

[0041] Specifically, the curing cylinder 7 is semicircular, and the arc surface faces downward, so that when the curing cylinder 7 is turned over, the arc surface can also fit and heat the battery tabs being transported.

[0042] The above implementation works as follows:

[0043] The initialization steps are as follows:

[0044] The resistance wire 9 is preheated in advance, and the temperature sensor 17 is set to a temperature value.

[0045] The working steps are as follows:

[0046] First, the staff connects one end of the lithium-ion battery ear to be coated under the coating roller 3 and the other end to the surface of the winding roller 6. During the process, the electrode to be coated is transported to the bottom of the curing cylinder 7 through the guide plate 4. At this time, the arc surface of the curing cylinder 7 faces downward, and the internal resistance wire 9 is heated to heat and cure the electrode ear, thereby enhancing the stability and quality of the coating. As the hot battery electrode passes under the temperature sensor 17, the temperature sensor 17 detects that the temperature reaches the set value, and then the temperature sensor 17 transmits the signal to the motor 20 through the single-chip microcomputer, and the motor 20 starts to work. The output end of the motor 20 drives the second bevel gear 22 to rotate through the support shaft 21, and the second bevel gear 22 is meshed with the first bevel gear 19, thereby driving the flip shaft 16 to rotate. When the rotating shaft 16 rotates, the curing cylinder 7 is driven to flip through the protrusion 18. During the flipping process, the guide groove 25 opened on the top outer surface of the support frame 15 and the supporting slider 24 on the end face of the curing cylinder 7 cooperate with each other to play a supporting and guiding role, ensuring stable and accurate flipping. This structure avoids the instability and flipping deviation that may be caused by a single support point, and improves the reliability of the equipment. The curing cylinder 7 flips to the top surface of the cooling plate 12 facing down. At this time, the heated and cured pole ear reaches the bottom of the cooling plate 12. The cooling pipe 14 in the annular groove 13 inside the cooling plate 12 is connected to the cooling water tank 11 through a water pump, so as to achieve rapid cooling and shaping of the pole ear, prevent the pole ear from deformation and performance changes in subsequent processes, and the pole ear after cooling treatment continues to be transported along the guide plate 4 and rolled up.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating device for producing a tab of a lithium-ion battery, comprising a bottom plate (1), a first bracket (2), a coating roller (3), a guide plate (4), a second bracket (5), and a winding roller (6), wherein the first bracket (2) is symmetrically fixedly connected to one end of the top surface of the bottom plate (1), the coating roller (3) is rotatably connected to the top surface of the first bracket (2), the guide plate (4) is fixedly connected to a side wall of the first bracket (2), the second bracket (5) is symmetrically fixed to the top surface of one end of the bottom plate (1) away from the first bracket (2), and the winding roller (6) is rotatably connected to the top outer surface of the second bracket (5), characterized in that: The top surface of the guide plate (4) is provided with a heating component for heating and curing the battery pole ear, and the heating component includes a curing cylinder (7), a heating groove (8), and a resistance wire (9). The top surface of the guide plate (4) is provided with a cooling component for cooling the heated battery pole ear, and the cooling component includes a cooling water tank (11), a cooling plate (12), an annular groove (13), and a cooling pipe (14). The top surface of the guide plate (4) is provided with a flip component for converting the heating component into a cooling component, and the flip component includes a support frame (15), a flip shaft (16), and a temperature sensor (17).

2. The lithium-ion battery tab production coating equipment according to claim 1, characterized in that: The bottom surface of the curing cylinder (7) is located on the top surface of the material guide plate (4), the heating groove (8) is opened inside the curing cylinder (7), the resistance wires (9) are evenly distributed on the inner wall of the heating groove (8), the top surface of the curing cylinder (7) is fixedly connected to the heat insulation board (10), and the cooling water tank (11) is fixed on the top surface of the heat insulation board (10).

3. The lithium-ion battery tab production coating equipment according to claim 1, characterized in that: The cooling plate (12) is fixedly connected to the top surface of the cooling water tank (11), an annular groove (13) is provided inside the cooling plate (12), a cooling pipe (14) is fixedly connected to the inner wall of the annular groove (13), and the cooling pipe (14) is connected to the cooling water tank (11) via a water pump.

4. The lithium-ion battery tab production coating equipment according to claim 1, characterized in that: The support frame (15) is symmetrically fixedly connected to the top surface of the guide plate (4), the flip shaft (16) is rotatably connected between the two support frames (15), the temperature sensor (17) is fixed to the middle part of the bottom surface of the flip shaft (16), a protrusion (18) is fixedly connected between the middle part of the flip shaft (16) and the curing cylinder (7), one end of the flip shaft (16) is fixedly connected to the first bevel gear (19), a motor (20) is provided on one side of the guide plate (4), the output end of the motor (20) is fixedly connected to the support shaft (21), the top end of the support shaft (21) is fixedly connected to the second bevel gear (22), and the second bevel gear (22) is meshingly connected with the first bevel gear (19).

5. The lithium-ion battery tab production coating equipment according to claim 4, characterized in that: The top of the support frame (15) is arc-shaped, and a guide groove (25) is provided on the top outer surface of the support frame (15). The inner wall of the guide groove (25) is slidably connected with a support slider (24), and the outer surface of one end of the support slider (24) is fixed to the end surface of the curing cylinder (7).

6. The lithium-ion battery tab production coating equipment according to claim 4, characterized in that: An L-shaped metal seat (23) is fixedly connected to the bottom surface of one side of the guide plate (4), and the bottom surface of the motor (20) is fixedly connected to the top surface of the metal seat (23).

7. The lithium-ion battery tab production coating equipment according to claim 2, characterized in that: The curing cylinder (7) is semicircular, with the arc surface facing downwards.

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