Electrolytic copper foil passivation mechanism

Abstract

The utility model discloses an electrolytic copper foil passivation mechanism which comprises two wallboards which are oppositely arranged front and back, a passivation tank, a plurality of conductive rollers, an anode plate, a first guide roller, a passivation driving assembly and a lifting driving assembly, the passivation tank is located between the two wallboards and arranged at the top end of a passivation support, and the passivation tank is provided with a passivation cavity; the multiple conductive rollers are all located in the passivation cavity and are sequentially distributed at intervals from left to right in the length direction of the passivation tank, the first ends and the second ends of the multiple conductive rollers extend out of the passivation cavity and are rotationally arranged on the inner sides of the two wall plates correspondingly, and the anode plate is arranged in the passivation cavity and located below the multiple conductive rollers; the first guide roller is located on the right side of the conductive rollers and located above the passivation cavity, the first end and the second end of the first guide roller are rotationally arranged on the inner sides of the two wall plates correspondingly, and the passivation driving assembly is arranged on the outer side of one wall plate. According to the utility model, the oxidation resistance and corrosion resistance of the electrolytic copper foil can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic copper foil production technology, specifically to an electrolytic copper foil passivation mechanism. Background Technology

[0002] Electrolytic copper foil is a current collector material for the negative electrode of lithium-ion batteries. The thinner the electrolytic copper foil, the higher the energy density of the battery. However, electrolytic copper foil has low oxidation resistance. During storage, both sides of the electrolytic copper foil are easily oxidized by oxygen and water in the air, forming surface impurities such as copper oxide and basic copper carbonate. This not only severely damages the surface quality and appearance of the electrolytic copper foil, but also greatly weakens its conductivity in lithium-ion batteries, increases the battery's internal resistance, and reduces battery capacity. Simultaneously, electrolytic copper foil has low corrosion resistance. During battery production, the organic electrolyte in the battery easily corrodes both sides of the electrolytic copper foil, leading to unstable electrochemical performance of the battery.

[0003] Therefore, there is an urgent need for an electrolytic copper foil passivation mechanism that can passivate electrolytic copper foil to improve its oxidation and corrosion resistance. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides an electrolytic copper foil passivation mechanism, which can passivate the electrolytic copper foil, forming a passivation film on both sides of the electrolytic copper foil, thereby improving the electrolytic copper foil's resistance to oxidation and corrosion, thus improving the battery's conductivity, reducing the battery's internal resistance, increasing the battery's capacity, and ensuring the stability of the battery's electrochemical performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electrolytic copper foil passivation mechanism includes two wall plates arranged opposite each other, a passivation tank, a plurality of conductive rollers, an anode plate, a first guide roller, a passivation drive assembly, and a lifting drive assembly. The passivation tank is located between the two wall plates and is disposed at the top of the passivation support. The passivation tank has a passivation cavity. The plurality of conductive rollers are all located in the passivation cavity and are distributed sequentially from left to right along the length of the passivation tank. The first end and the second end of the plurality of conductive rollers extend out of the passivation cavity and are rotatably disposed on the inner side of the two wall plates. The anode plate is disposed in the passivation cavity and is located below the plurality of conductive rollers. The first guide roller is located to the right of the plurality of conductive rollers and above the passivation cavity. The first end and the second end of the first guide roller are rotatably disposed on the inner side of the two wall plates. The passivation drive assembly is disposed on the outer side of one of the wall plates and is used to drive the plurality of conductive rollers and the first guide roller to rotate. The lifting drive assembly is disposed on the inner side of the two wall plates and is used to drive the passivation support to move up and down.

[0007] The beneficial effects of this invention are as follows: This invention, through two wall panels arranged opposite each other, a passivation tank, several conductive rollers, an anode plate, a first guide roller, and a passivation drive assembly, can achieve passivation treatment of electrolytic copper foil, forming a passivation film on both sides of the electrolytic copper foil. This improves the oxidation and corrosion resistance of the electrolytic copper foil, thereby enhancing the battery's conductivity, reducing its internal resistance, increasing its capacity, and ensuring the stability of the battery's electrochemical performance. The lifting drive assembly can move the passivation tank up and down, facilitating the threading of the electrolytic copper foil and cleaning of the passivation tank, and also allowing adjustment of the immersion depth of the electrolytic copper foil in the solution. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a schematic diagram of the structure of an electrolytic copper foil passivation mechanism according to an embodiment of the present invention from a first angle;

[0010] Figure 2 yes Figure 1 A schematic diagram of the second angle of the electrolytic copper foil passivation mechanism shown;

[0011] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the electrolytic copper foil passivation mechanism shown;

[0012] Figure 4 yes Figure 1 The diagram shows the structure of the electrolytic copper foil passivation mechanism after removing the extrusion assembly, air knife assembly, first spray assembly, and second spray assembly at the first angle.

[0013] Figure 5 yes Figure 1 The diagram shows the structure of the electrolytic copper foil passivation mechanism after removing the extrusion assembly, air knife assembly, first spray assembly, and second spray assembly, from a second angle.

[0014] Figure 6 yes Figure 1 A schematic diagram of the passivation tank, several conductive rollers, anode plate, and traction roller at the first angle of the electrolytic copper foil passivation mechanism shown.

[0015] Figure 7 yes Figure 1 A schematic diagram of the second angle of the passivation tank, several conductive rollers, anode plate and traction roller of the electrolytic copper foil passivation mechanism shown;

[0016] Figure 8 yes Figure 1 A schematic diagram of the passivation tank, several conductive rollers, anode plate, and traction roller at the third angle of the electrolytic copper foil passivation mechanism shown.

[0017] Figure 9 yes Figure 1 A schematic diagram of the structure of the two wall plates, the first guide roller, and the extrusion assembly of the electrolytic copper foil passivation mechanism shown;

[0018] Figure 10 yes Figure 9 The diagram shows the structure of the extrusion assembly.

[0019] Figure 11 yes Figure 1 A schematic diagram of the structure of the first air knife in the air knife assembly of the electrolytic copper foil passivation mechanism shown;

[0020] Figure 12 yes Figure 1 A schematic diagram of the structure of the second air knife in the air knife assembly of the electrolytic copper foil passivation mechanism shown;

[0021] Figure 13 yes Figure 1 A schematic diagram of the first angle of the first spray assembly of the electrolytic copper foil passivation mechanism shown;

[0022] Figure 14 yes Figure 1 A schematic diagram of the second angle of the first spray assembly of the electrolytic copper foil passivation mechanism shown;

[0023] Figure 15 yes Figure 1 A schematic diagram of the second spray assembly of the electrolytic copper foil passivation mechanism shown.

[0024] Figure label:

[0025] 10. Wall panel; 11. Notch;

[0026] 20. Passivation tank; 20a. First groove; 20b. Second groove; 21. Passivation chamber; 22. Washing chamber; 23. Partition; 24a. First overflow pipe; 241a. First outlet; 24b. Second overflow pipe; 241b. Second outlet; 25. Passivation support; 26a. First inlet; 26b. Second inlet; 27a. First overflow port; 27b. Second overflow port;

[0027] 30. Conductive roller; 31. Conductive roller bearing housing;

[0028] 40. Anode plate; 41. Anode plate connector; 43. Support;

[0029] 50. First guide roller; 51. First guide roller bearing housing; 55. First guide plate;

[0030] 60. Passivated drive assembly; 61. Passivated motor; 62. Reducer; 631. Passivated drive wheel; 632. Passivated driven wheel;

[0031] 70. Squeezing assembly; 71. Squeezing roller; 711. Squeezing roller bearing housing; 721. First squeezing mounting plate; 722. Second squeezing mounting plate; 7221. Cylinder plate; 723. Third squeezing mounting plate; 724. Squeezing cylinder; 7241. Cylinder connector;

[0032] 80. Air knife assembly; 81. First air knife; 811. First air outlet; 812. First air inlet connector; 813. First connecting shaft; 814. Second connecting shaft; 815. First rotating seat; 8151. First oblong hole; 816. First air knife mounting plate; 8161. First round hole; 817. Air knife bracket; 82. Second air knife; 821. Second air outlet; 822. Third connecting shaft; 823. Second rotating seat; 8231. Second oblong hole; 824. Second air knife mounting plate; 8241. Second round hole; 825. Second air inlet connector; 826. Third air knife mounting plate;

[0033] 90. Traction roller; 91. Traction bearing housing; 92. Traction mounting plate; 93. Traction bracket;

[0034] 100. Second guide roller; 1001. Second guide roller bearing housing; 1005. Second guide plate;

[0035] 110. Guide drive assembly; 1101. Guide motor; 1102. Motor mount; 1103. Guide driven wheel; 1104. Protective cover;

[0036] 120. First spray assembly; 1201. First spray pipe; 12011. First spray nozzle; 1202. First mounting block; 1203. First fixing bracket; 1204. First liquid inlet connector; 1205. First liquid inlet pipe;

[0037] 130. Second spray assembly; 1301. Second spray pipe; 13011. Second spray nozzle; 1302. Second mounting block; 1303. Second fixing bracket; 1304. Second liquid inlet connector; 1305. Second liquid inlet pipe;

[0038] 140. Lifting drive assembly; 1401. Lifting cylinder; 1402. Lifting cylinder seat; 1403. Guide seat; 1404. Guide rod; 1405. Guide rod mounting seat; 1406. Linear bearing. Detailed Implementation

[0039] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0040] Please refer to Figures 1 to 3 An embodiment of the present invention provides an electrolytic copper foil passivation mechanism, comprising two wall plates 10 arranged in a front-to-back manner, a passivation tank 20, a plurality of conductive rollers 30, an anode plate 40, a first guide roller 50, a passivation drive assembly 60, a liquid squeezing assembly 70, an air knife assembly 80, a traction roller 90, a second guide roller 100, a guide drive assembly 110, a first spray assembly 120, a second spray assembly 130, and a lifting drive assembly 140.

[0041] Combination Figures 4 to 8 As shown, the passivation tank 20 is located between two wall panels 10 and is positioned at the top of the passivation support 25. The passivation tank 20 has a passivation chamber 21 for holding the passivation solution and a washing chamber 22 for holding the washing solution. The washing chamber 22 is located to the right of the passivation chamber 21, and the washing chamber 22 and the passivation chamber 21 are separated by a partition 23. In this embodiment, the washing solution is clean water. The passivation solution is readily available and will not be described further here.

[0042] The bottom of the passivation tank 20 is provided with a first inlet 26a and a second inlet 26b. The first inlet 26a communicates with the interior of the passivation chamber 21, and the second inlet 26b communicates with the interior of the washing chamber 22. The first inlet 26a is used to connect to a passivation liquid supply device, through which passivation liquid can be supplied to the passivation chamber 21 via the first inlet 26a, thus replenishing the passivation liquid in the passivation chamber 21 in a timely manner during the passivation process. The second inlet 26b is used to connect to a washing liquid supply device, through which washing liquid can be supplied to the washing chamber 22 via the second inlet 26b, thus replenishing the washing liquid in the washing chamber 22 in a timely manner during the passivation process. The position and number of the first inlet 26a and the second inlet 26b can be set according to the actual situation.

[0043] The passivation tank 20 has a first overflow pipe 24a and a second overflow pipe 24b at its two ends. The inner wall of the passivation chamber 21 near the first overflow pipe 24a has a first overflow port 27a, and the inner wall of the washing chamber 22 near the second overflow pipe 24b has a second overflow port 27b. Both the first overflow port 27a and the second overflow port 27b are close to the top of the passivation tank 20. The first overflow port 27a is connected to the interior of the passivation chamber 21 and the interior of the first overflow pipe 24a, and the second overflow port 27b is connected to the interior of the washing chamber 22 and the interior of the second overflow pipe 24b, respectively. The bottom ends of the first overflow pipe 24a and the second overflow pipe 24b have a first liquid outlet 241a and a second liquid outlet 241b, respectively. The first liquid outlet 241a is connected to the interior of the first overflow pipe 24a, and the second liquid outlet 241b is connected to the interior of the second overflow pipe 24b. The first outlet 241a is used to connect to the passivation solution recovery equipment, and the second outlet 241b is used to connect to the washing solution recovery equipment. After the liquid level of the passivation solution in the passivation chamber 21 exceeds the first overflow port 27a, the passivation solution can enter the first overflow pipe 24a through the first overflow port 27a until the liquid level of the passivation solution is lower than the first overflow port 27a. This prevents the passivation solution from overflowing from the top of the passivation tank 20, thereby avoiding contamination of the working environment where the electrolytic copper foil passivation mechanism is located. The passivation solution entering the first overflow pipe 24a can enter the passivation solution recovery equipment through the first outlet 241a for recovery. After the level of the washing liquid in the washing chamber 22 exceeds the second overflow port 27b, the washing liquid can enter the second overflow pipe 24b through the second overflow port 27b until the level of the washing liquid is lower than the second overflow port 27b. This prevents the washing liquid from overflowing from the top of the passivation tank 20, thus avoiding contamination of the working environment of the electrolytic copper foil passivation mechanism. The washing liquid entering the second overflow pipe 24b can enter the washing liquid recovery equipment through the second outlet 241b for recovery. There are multiple first overflow ports and multiple second overflow ports, which are distributed at intervals along the width direction of the passivation tank. The position and number of the first and second outlets can be set according to the actual situation.

[0044] The lifting drive assembly 140 is disposed on the inner side of the two wall panels 10 and is used to drive the passivation bracket 25 to move up and down, thereby driving the passivation tank 20 to move up and down. Driving the passivation tank 20 to move up and down facilitates the threading of electrolytic copper foil and cleaning of the passivation tank. It can also adjust the depth of the electrolytic copper foil immersion solution. When the liquid levels of the passivation solution and washing solution are high, the lifting drive assembly 140 drives the passivation tank 20 downwards; when the liquid levels of the passivation solution and washing solution are low, the lifting drive assembly 140 drives the passivation tank 20 upwards. Specifically, the lifting drive assembly 140 includes two lifting cylinders 1401 arranged in a front-to-back configuration. The two lifting cylinders 1401 are respectively disposed on the inner side of the two wall panels 10 via lifting cylinder seats 1402. The output ends of the two lifting cylinders 1401 are respectively connected to the bottom end of the passivation bracket 25. The two lifting cylinders 1401 are used to drive the passivation bracket 25 to move up and down.

[0045] The inner side of the wall panel 10 is provided with a guide seat 1403, which has a through hole extending through its top and bottom ends. A guide rod 1404 is inserted through the through hole of the guide seat 1403, and the guide rod 1404 can move up and down relative to the guide seat 1403. The top end of the guide rod 1404 is connected to the bottom end of the passivation bracket 25 through a guide rod mounting seat 1405, and the bottom end of the guide rod 1404 is located below the guide seat 1403. A linear bearing 1406 is provided in the through hole of the guide seat 1403, and the linear bearing 1406 is sleeved on the outer circumference of the guide rod 1404. The up and down movement of the passivation bracket 25 can drive the guide rod 1404 to move up and down. The guide rod 1404 guides the up and down movement of the passivation bracket 25, which can improve the stability of the up and down movement of the passivation bracket 25, thereby improving the stability of the up and down movement of the passivation groove 20. The linear bearing 1406 provides movement support for the guide rod 1404. In this embodiment, there are two guide seats 1403 on the inner side of each wall panel 10, and the lifting cylinder 1401 is located between the two adjacent guide seats 1403. The number of guide rods 1404 corresponds to the number of guide seats 1403, which is also two.

[0046] A plurality of conductive rollers 30 are located within the passivation cavity 21 and are distributed sequentially from left to right along the length of the passivation groove 20. The first and second ends of the conductive rollers 30 extend out of the passivation cavity 21 and are rotatably disposed on the inner sides of the two wall plates 10. The first end of the conductive roller 30 is used for electrical connection to the negative terminal of an external power source.

[0047] In this embodiment, the conductive roller 30 protrudes from the top of the passivation groove 20. The top of the passivation groove 20 is provided with a first groove 20a and a second groove 20b corresponding to the conductive roller 30. The first end and the second end of the conductive roller 30 extend out of the passivation cavity 21 through the first groove 20a and the second groove 20b, respectively. The shape of the first groove 20a is adapted to the shape of the first end of the conductive roller 30, and the shape of the second groove 20b is adapted to the shape of the second end of the conductive roller 30. The inner sides of the two wall panels 10 are respectively provided with two first mounting holes corresponding to the conductive roller 30. The first end and the second end of the conductive roller 30 are rotatably mounted in the corresponding two first mounting holes through two conductive roller bearing seats 31, and the first end of the conductive roller 30 extends out of the corresponding first mounting hole. The conductive roller bearing seat 31 corresponding to the first end of the conductive roller 30 extends partially from the corresponding first mounting hole and is disposed on the outer side of one of the wall plates 10. The conductive roller bearing seat 31 corresponding to the second end of the conductive roller 30 extends partially from the corresponding first mounting hole and is disposed on the inner side of the other wall plate 10. The conductive roller bearing seat 31 is an insulating component.

[0048] In this embodiment, there are two conductive rollers 30. It can be understood that the number of conductive rollers 30 can be set according to actual conditions.

[0049] An anode plate 40 is disposed within the passivation cavity 21 and located below several conductive rollers 30. In this embodiment, the anode plate 40 is disposed at the bottom of the passivation cavity 21 via supports 43. The number of supports 43 can be set according to actual conditions. Two anode plate connectors 41 are respectively provided at both ends of the anode plate 40. The anode plate connectors 41 protrude from the top of the passivation groove 20 and are used for electrical connection with the positive electrode of an external power supply. In this embodiment, there are two conductive rollers 30, and the two anode plate connectors 41 are located between the two conductive rollers 30.

[0050] In this embodiment, the anode plate 40 is a titanium plate. It can be understood that the anode plate 40 can also be, for example, a titanium alloy plate coated with a noble metal oxide, a lead-based alloy plate, a graphite plate, a titanium-based lead dioxide plate, etc.

[0051] The first guide roller 50 is located to the right of the plurality of conductive rollers 30 and above the passivation cavity 21. In this embodiment, the first guide roller 50 is partially located above the partition 23 and the washing cavity 22. The first end and the second end of the first guide roller 50 are rotatably disposed on the inner side of the two wall plates 10. The first guide roller 50 guides the electrolytic copper foil. In this embodiment, the inner side of the two wall plates 10 is provided with two second mounting holes corresponding to the first guide roller 50. The first end and the second end of the first guide roller 50 are rotatably disposed in the corresponding two second mounting holes through two first guide roller bearing seats, and the first end of the first guide roller 50 extends out from the corresponding second mounting hole. The first guide roller bearing seat corresponding to the first end of the first guide roller 50 extends out from the corresponding second mounting hole and is disposed on the outer side of one of the wall plates 10, and the first guide roller bearing seat corresponding to the second end of the first guide roller 50 extends out from the corresponding second mounting hole and is disposed on the inner side of the other wall plate 10.

[0052] A passivation drive assembly 60 is disposed on the outer side of one of the wall plates 10 and is used to drive the rotation of several conductive rollers 30 and the first guide roller 50. Specifically, the passivation drive assembly 60 includes a passivation motor 61, a reducer 62, and a passivation synchronous belt module. The reducer 62 is disposed on the outer side of one of the wall plates 10, and the passivation motor 61 is mounted on the reducer 62. The output end of the passivation motor 61 is connected to the input end of the reducer 62, and the output end of the reducer 62 is connected to the first end of the several conductive rollers 30 and the first guide roller 50 through the passivation synchronous belt module. The passivation motor 61 is used to drive the several conductive rollers 30 and the first guide roller 50 to rotate through the reducer 62 and the passivation synchronous belt module. In practical applications, the rotation speed of the conductive rollers 30 and the first guide roller 50 can be adjusted to match the feeding speed of the electrolytic copper foil to maintain high efficiency and synchronous passivation.

[0053] The passivated synchronous belt module includes a passivated drive pulley 631, multiple passivated driven pulleys 632, and a passivated synchronous belt sleeved around the outer periphery of the passivated drive pulley 631 and the multiple passivated driven pulleys 632. The passivated drive pulley 631 is sleeved around the outer periphery of the first end of the first guide roller 50. The multiple passivated driven pulleys 632 correspond one-to-one with several conductive rollers 30, with the passivated driven pulleys 632 sleeved around the outer periphery of the first end of the corresponding conductive roller 30. The passivated motor 61 drives the first guide roller 50 and the passivated drive pulley 631 to rotate via a reducer 62, thereby driving the multiple passivated driven pulleys 632 and the passivated synchronous belt to rotate, which in turn drives the multiple conductive rollers 30 to rotate. In this embodiment, there are two conductive rollers 30, and therefore two passivated driven pulleys 632. The passivated driven pulley 632 is an insulating component.

[0054] The traction roller 90 is located inside the washing chamber 22, and its two ends are rotatably mounted on the inner sides of two traction mounting plates 92 via two traction bearing seats 91. Parts of the two traction mounting plates 92 protrude from the top of the passivation groove 20 and are respectively mounted on the inner sides of two wall plates 10 via two traction brackets 93. The traction roller 90 provides traction support for the electrolytic copper foil. The second guide roller 100 is located to the right of the traction roller 90 and above the washing chamber 22. The first and second ends of the second guide roller 100 are rotatably mounted on the inner sides of the two wall plates 10. The second guide roller guides the electrolytic copper foil.

[0055] In this embodiment, the inner sides of the two wall panels 10 are provided with two third mounting holes corresponding to the second guide roller 100. The first end and the second end of the second guide roller 100 are rotatably disposed in the corresponding two third mounting holes through two second guide roller bearing seats 1001, with the first end of the second guide roller 100 extending out from the corresponding third mounting hole. The second guide roller bearing seat 1001 corresponding to the first end of the second guide roller 100 partially extends out from the corresponding third mounting hole and is disposed on the outer side of one of the wall panels 10, while the second guide roller bearing seat 1001 corresponding to the second end of the second guide roller 100 partially extends out from the corresponding third mounting hole and is disposed on the inner side of the other wall panel 10.

[0056] A guide drive assembly 110 is disposed on the outer side of one of the wall plates 10 and is used to drive the second guide roller 100 to rotate. Specifically, the guide drive assembly 110 includes a guide motor 1101 and a guide timing belt module. The guide motor 1101 is disposed on the outer side of one of the wall plates 10 via a motor mount 1102, and the output end of the guide motor 1101 is connected to the first end of the second guide roller 100 via the guide timing belt module. In practical applications, the rotation speed of the second guide roller 100 can be adjusted to match the feeding speed of the electrolytic copper foil to maintain efficient and synchronized passivation.

[0057] The guide synchronous belt module includes a guide drive pulley, a guide driven pulley 1103, and a guide synchronous belt sleeved on the outer periphery of the guide drive pulley and the guide driven pulley 1103. The guide drive pulley is sleeved on the outer periphery of the output end of the guide motor 1101, and the guide driven pulley 1103 is sleeved on the outer periphery of the first end of the second guide roller 100. The guide motor 1101 drives the guide drive pulley to rotate, thereby driving the guide driven pulley 1103 and the guide synchronous belt to rotate, which in turn drives the second guide roller 100 to rotate. The guide driven pulley 1103 is housed in a protective cover 1104 (see...). Figure 2 Inside, a protective cover 1104 is installed on the outer side of one of the wall panels 10. The protective cover 1104 protects the guide driven wheel 1103.

[0058] A first guide plate 55 is provided below the first guide roller 50. The first guide plate 55 is located to the right of the passivation chamber 21 and part of the first guide plate 55 is located above the washing chamber 22. One end of the first guide plate 55 is located at the top of the partition plate 23, and the other end of the first guide plate 55 is inclined upward towards the washing chamber 22. A second guide plate 1005 is provided below the second guide roller 100. The second guide plate 1005 is located to the right of the washing chamber 22. One end of the second guide plate 1005 is located at the top of the passivation tank 20, and the other end of the second guide plate 1005 is inclined upward away from the washing chamber 20. The first guide plate 55 and the second guide plate 56 serve to guide the flow. The first guide plate 55 guides the passivation liquid dripping during the electrolytic copper foil conveying process into the passivation chamber 21, and the second guide plate 1005 guides the passivation liquid and washing liquid dripping during the electrolytic copper foil conveying process into the washing chamber 22. This prevents the passivation liquid and washing liquid from dripping onto the outside of the passivation tank 20, thereby avoiding contamination of the working environment where the electrolytic copper foil passivation mechanism is located.

[0059] Combination Figure 9 and Figure 10 As shown, the extrusion assembly 70 is used to extrude the electrolytic copper foil on the first guide roller 50 to squeeze out the remaining passivation liquid on the electrolytic copper foil. Specifically, the extrusion assembly 70 includes an extrusion roller 71 and two extrusion drive modules. The extrusion roller 71 is located on one side of the first guide roller 50, for example, to the left of the first guide roller 50. The extrusion roller 71 is located between the two extrusion drive modules, and its two ends are rotatably mounted on the two extrusion drive modules through two extrusion roller bearing seats 711. The two extrusion drive modules are respectively connected to two wall plates 10. The two extrusion drive modules are used to drive the extrusion roller 71 to move toward or away from the first guide roller 50. By moving the extrusion roller 71 toward the first guide roller 50, the electrolytic copper foil on the first guide roller 50 can be extruded.

[0060] The extrusion drive module includes a first extrusion mounting plate 721, a second extrusion mounting plate 722, a third extrusion mounting plate 723, and an extrusion cylinder 724. Two notches 11 are respectively provided at the top of the two wall panels 10. One end of the first extrusion mounting plate 721 of the two extrusion drive modules is connected to the inner wall of one end of each of the two notches 11. One end of the second extrusion mounting plate 722 is connected to the other end of the first extrusion mounting plate 721. The other end of the second extrusion mounting plate 722 extends to the left. The second extrusion mounting plate 722 and the first extrusion mounting plate 721 are integrally formed, and the two form an L-shaped structure. The third extrusion mounting plate 723 is slidably disposed on the side of the second extrusion mounting plate 722 away from the first extrusion mounting plate 721 via a conventional slide rail and a slider that slidably engages with the slide rail. The squeezing cylinder 724 is connected to the other end of the second squeezing mounting plate 722 and is located between the third squeezing mounting plate 723 and the second squeezing mounting plate 722. The output end of the squeezing cylinder 724 is connected to the side of the third squeezing mounting plate 723 near the second squeezing mounting plate 722 via a cylinder connector 7241. The two ends of the squeezing roller 71 are rotatably mounted on the side of the third mounting plate 723 of the two squeezing drive modules away from the second squeezing mounting plate 722 via two squeezing roller bearing seats 711. The squeezing cylinder 724 is used to drive the third squeezing mounting plate 723 to move towards or away from the first guide roller 50, thereby driving the squeezing roller 71 to move towards or away from the first guide roller 50 via the third squeezing mounting plate 723 of the two squeezing drive modules.

[0061] In this embodiment, the other end of the second squeezing mounting plate 722 is provided with a cylinder plate 7221, and the squeezing cylinder 724 is connected to the cylinder plate 7221.

[0062] Combination Figure 11 and Figure 12 As shown, the air knife assembly 80 is disposed between several conductive rollers 30 and the liquid extrusion assembly 70. The air knife assembly 80 is located above the passivation chamber 21 and is used to blow air onto the electrolytic copper foil to remove excess passivation liquid from the electrolytic copper foil. Specifically, the air knife assembly 80 includes a first air knife 81 and a second air knife 82. The first air knife 81 and the second air knife 82 are located on both sides of the electrolytic copper foil, that is, on the left and right sides of the electrolytic copper foil, respectively, and both are inclined downwards towards the electrolytic copper foil.

[0063] The first air knife 81 has a first air outlet 811 on the side near the electrolytic copper foil, and the first air outlet 811 faces the electrolytic copper foil. The first air inlet 812 is provided on the side of the first air knife 81 away from the electrolytic copper foil. Both the first air inlet 812 and the first air outlet 811 are connected to the interior of the first air knife 81. The first air inlet 812 is used to connect to an air supply device. Compressed air can be introduced into the first air knife 81 through the air supply device via the first air inlet 812. Then, the compressed air can be blown towards one side of the electrolytic copper foil through the first air outlet 811, thereby removing excess passivation liquid from the electrolytic copper foil. The first air knife 81 has a first connecting shaft 813 and a second connecting shaft 814 at its two ends. The end of the first connecting shaft 813 is connected to the first rotating seat 815. The inner side of one of the wall panels 10 has a first air knife mounting plate 816. The first rotating seat 815 is detachably mounted on the side of the first air knife mounting plate 816 near the center of the first air knife 81. The end of the second connecting shaft 814 passes through the through hole of the air knife bracket 817 and can rotate relative to the air knife bracket 817. The air knife bracket 817 is located on the inner side of the other wall panel 10.

[0064] The second air knife 82 has a second air outlet 821 on the side near the electrolytic copper foil, and the second air outlet 821 faces the electrolytic copper foil. The two ends of the second air knife 82 are respectively provided with a third connecting shaft 822 and a second air inlet connector 825. The end of the third connecting shaft 822 is connected to the second rotating seat 823. The inner side of one of the wall plates 10 is provided with a second air knife mounting plate 824. The second rotating seat 823 is detachably installed on the side of the second air knife mounting plate 824 near the center of the second air knife 82. The outer side of the other wall plate 10 is provided with a third air knife mounting plate 826. The second air inlet connector 825 is provided through the through hole of the other wall plate 10 and the through hole of the third air knife mounting plate 826. The second air inlet connector 825 can rotate relative to the third air knife mounting plate 826 and the other wall plate 10. The second air inlet connector 825 and the second air outlet 821 are both connected to the interior of the second air knife 82. The second air inlet connector 825 is used to connect to the air supply equipment. Compressed air can be introduced into the second air knife 82 through the air supply equipment via the second air inlet connector 825. Then, the compressed air can be blown to the other side of the electrolytic copper foil through the second air outlet 821, thereby removing excess passivation liquid from the electrolytic copper foil.

[0065] The first rotating seat 815 is detachably mounted on the side of the first air knife mounting plate 816 near the center of the first air knife 81. Specifically, the first rotating seat 815 has an arc-shaped first waist-shaped hole 8151, and the side of the first air knife mounting plate 816 near the center of the first air knife 81 has a first round hole 8161 corresponding to the first waist-shaped hole 8151. First fasteners, such as screws, are installed in the first waist-shaped hole 8151 and the corresponding first round hole 8161. In this embodiment, there are two first waist-shaped holes 8151, which are arranged symmetrically about the axis of the first connecting shaft 813. The number of first round holes 8161 corresponds to the number of first waist-shaped holes 8151, which is also two. It can be understood that the number of first waist-shaped holes 8151 and first round holes 8161 can be set according to the actual situation. By installing the first fastener at different positions within the first oblong hole 8151, the blowing angle of the first air knife 81 can be adjusted, thereby ensuring that excess passivation liquid on the electrolytic copper foil is thoroughly blown away. For example, when the first fastener is located in the middle position within the first oblong hole 8151, if the blowing angle of the first air knife 81 is to be increased, the first fastener should be removed first, and then the first rotating seat 815 and the first air knife 816 should be rotated counterclockwise to the predetermined position. At this time, the angle between the first air knife 81 and the electrolytic copper foil increases, thus increasing the blowing angle of the first air knife 81. Then, the first fastener can be installed within the first oblong hole 8151 and the first round hole 8161. To reduce the blowing angle of the first air knife 81, first remove the first fastener, then rotate the first rotating seat 815 and the first air knife 816 clockwise to the predetermined position. At this time, the angle between the first air knife 81 and the electrolytic copper foil becomes smaller, thus increasing the blowing angle of the first air knife 81. Then, install the first fastener in the first oblong hole 8151 and the first round hole 8161.

[0066] The second rotating seat 823 is detachably mounted on the side of the second air knife mounting plate 824 near the center of the second air knife 82. Specifically, the second rotating seat 823 is provided with an arc-shaped second oblong hole 8231, and the side of the second air knife mounting plate 824 near the center of the second air knife 82 is provided with a second round hole 8241 corresponding to the second oblong hole 8231. Second fasteners, such as screws, are installed in the second oblong hole 8231 and the corresponding second round hole 8241. In this embodiment, there are two second oblong holes 8231, which are symmetrically arranged about the axis of the third connecting shaft 822. The number of second round holes 8241 corresponds to the number of second oblong holes 8231, which is also two. It can be understood that the number of second oblong holes 8231 and second round holes 8241 can be set according to the actual situation. By installing the second fastener at different positions within the second oblong hole 8231, the blowing angle of the second air knife 82 can be adjusted, ensuring that excess passivation liquid on the electrolytic copper foil is thoroughly removed. For example, when the second fastener is located in the middle position within the second oblong hole 8231, to increase the blowing angle of the second air knife 82, first remove the second fastener, then rotate the second rotating seat 823 and the second air knife 82 clockwise to the predetermined position. At this time, the angle between the second air knife 82 and the electrolytic copper foil increases, thus increasing the blowing angle of the second air knife 82. Then, the second fastener can be installed within the second oblong hole 8231 and the second round hole 8241. To reduce the blowing angle of the second air knife 82, first remove the second fastener, then rotate the second rotating seat 823 and the second air knife 82 counterclockwise to the predetermined position. At this time, the angle between the second air knife 82 and the electrolytic copper foil becomes smaller, thus increasing the blowing angle of the second air knife 82. Then, install the second fastener in the second oblong hole 8231 and the second round hole 8241.

[0067] Combination Figure 13 and Figure 14As shown, the first spray assembly 120 is disposed between the traction roller 90 and the first guide roller 100 and is located above the washing chamber 22. The first spray assembly 120 is used to spray washing liquid, i.e., clean water, onto the electrolytic copper foil to wash away residual passivation liquid on the electrolytic copper foil. Specifically, the first spray assembly 120 includes two first spray pipes 1201, which are located on both sides of the electrolytic copper foil, i.e., on the left and right sides of the electrolytic copper foil, and are staggered vertically. One end of the first spray pipe 1201 is connected to one end of the first liquid inlet connector 1204. The other end of the first spray pipe 1201 and the other end of the first liquid inlet connector 1204 are closed. The other ends of the first spray pipe 1201 and the first liquid inlet connector 1204 are respectively located inside the two first mounting blocks 1202. In this embodiment, the inner sides of the two first mounting blocks 1202 are respectively provided with two first mounting holes. The other ends of the first spray pipe 1201 and the first liquid inlet connector 1204 are respectively located in the two first mounting holes. The two first mounting blocks 1202 are respectively located inside the two wall panels 10 through two first fixing brackets 1203. The interior of the first liquid inlet connector 1204 is connected to the interior of the first spray pipe 1201. The outer wall of the first liquid inlet connector 1204 is provided with a first connector inlet port that is connected to the interior of the first liquid inlet connector 1204. The first connector inlet port is used to connect to the washing liquid supply equipment through the first liquid inlet pipe 1205. In actual application, the first liquid inlet pipe 1205 is provided through the first pipe through hole of the adjacent wall plate 10. The outer wall of the first spray pipe 1201 is provided with a plurality of first spray ports 12011. The plurality of first spray ports 12011 are all connected to the interior of the first spray pipe 1201. The plurality of first spray ports 12011 are distributed at intervals along the length direction of the first spray pipe 1201 and all the plurality of first spray ports 12011 face the electrolytic copper foil. The washing liquid can be introduced into the first inlet connector 1204 through the first inlet pipe 1205 via the washing liquid supply equipment. Then the washing liquid enters the first spray pipe 1201 and is sprayed onto both sides of the electrolytic copper foil through multiple first spray nozzles 12011 of the two first spray pipes 1201. In this way, the residual passivation liquid on the electrolytic copper foil can be washed away.

[0068] Combination Figure 15As shown, the second spray assembly 130 is disposed between the traction roller 90 and the second guide roller 100 and above the washing chamber 22. The second spray assembly 130 is used to spray washing liquid, i.e., clean water, onto the electrolytic copper foil to wash away residual passivation liquid on the electrolytic copper foil. Specifically, the second spray assembly 130 includes a second spray pipe 1301, which is located on one side of the electrolytic copper foil, for example, on the right side of the electrolytic copper foil. One end of the second spray pipe 1301 is connected to one end of the second liquid inlet connector 1304, and the other end of the second spray pipe 1301 and the other end of the second liquid inlet connector 1304 are closed. The other ends of the second spray pipe 1301 and the second liquid inlet connector 1304 are respectively disposed inside the two second mounting blocks 1302. In this embodiment, the two second mounting blocks 1302 are respectively provided with two second mounting holes on their inner sides, and the other ends of the second spray pipe 1301 and the second liquid inlet connector 1304 are respectively disposed in the two second mounting holes. Two second mounting blocks 1302 are respectively mounted on the inner side of the two wall panels 10 via two second fixed brackets 1303. The interior of the second liquid inlet connector 1304 is connected to the interior of the second spray pipe 1301. The outer wall of the second liquid inlet connector 1304 is provided with a second connector inlet that is connected to the interior of the second liquid inlet connector 1304. The second connector inlet is used to connect to the washing liquid supply equipment through the second liquid inlet pipe 1305. In actual application, the second liquid inlet pipe 1305 is set through the second pipe through hole of the adjacent wall panel 10. The outer wall of the second spray pipe 1301 is provided with a plurality of second spray ports 13011. The plurality of second spray ports 13011 are all connected to the interior of the second spray pipe 1301. The plurality of second spray ports 13011 are distributed at intervals along the length direction of the first spray pipe 1301 and all the plurality of second spray ports 13011 face the electrolytic copper foil. The washing liquid can be introduced into the second inlet connector 1304 through the second inlet pipe 1305 via the washing liquid supply equipment. Then the washing liquid enters the second spray pipe 1301 and is sprayed onto one side of the electrolytic copper foil through multiple second spray nozzles 13011 of the second spray pipe 1301. In this way, the residual passivation liquid on the electrolytic copper foil can be washed away.

[0069] With the above structure, in practical application, the passivation chamber 21 contains passivation liquid, the washing chamber 22 contains washing liquid, the conductive roller 30 is partially immersed in the passivation liquid, the anode plate 40 is located in the passivation liquid, the traction roller 90 is partially immersed in the washing liquid, the anode plate connector 41 of the anode plate 40 is connected to the positive terminal of the external power supply, and the first end of the conductive roller 30 is connected to the negative terminal of the external power supply. After the electrolytic copper foil is unwound, the electrolytic copper foil first enters the passivation liquid in the passivation chamber 21 and passes around several conductive rollers 30 in sequence from below. The conductive rollers 30 can conduct electricity to the electrolytic copper foil. At this time, the anode plate 40 acts as the anode and the electrolytic copper foil acts as the cathode, so that the passivation liquid and the electrolytic copper foil can undergo a passivation reaction (passivation). The principle is existing and will not be elaborated here. A passivation film, or chemical conversion film, is formed on both sides of the electrolytic copper foil. During the storage of the electrolytic copper foil, the passivation film can isolate both sides of the electrolytic copper foil from oxygen and water in the air, thereby preventing oxidation reactions between the two sides of the electrolytic copper foil and oxygen and water in the air, improving the oxidation resistance of the electrolytic copper foil, thereby improving the conductivity of the battery, reducing the internal resistance of the battery, and increasing the battery capacity. During the battery production process, the passivation film can separate the electrolytic copper foil from the organic electrolyte of the battery, thereby preventing the organic electrolyte from corroding both sides of the electrolytic copper foil, improving the corrosion resistance of the electrolytic copper foil, and thus ensuring the stability of the battery's electrochemical performance.

[0070] The electrolytic copper foil then exits from the passivation chamber 21 and passes between the first air knife 81 and the second air knife 82, where excess passivation liquid is blown away. It then passes between the squeezing roller 71 and the first guide roller 50, and then around the top of the first guide roller 50, where the squeezing roller 71 squeezes out any remaining passivation liquid. The electrolytic copper foil then passes between the two first spray pipes 1201, where washing liquid is sprayed onto it to remove any remaining passivation liquid. Finally, the electrolytic copper foil enters the washing liquid in the washing chamber 22 and passes under the traction roller 90, where the washing liquid washes away any remaining passivation liquid. The electrolytic copper foil then exits from the washing chamber 22 and passes over the second guide roller 100. Washing liquid is sprayed onto the electrolytic copper foil through the second spray pipe 1301 to remove any residual passivation liquid. During the washing process, any washing liquid and passivation liquid dripping from the electrolytic copper foil falls into the washing chamber 22.

[0071] This invention utilizes two wall panels 10 arranged opposite each other, a passivation tank 20, several conductive rollers 30, an anode plate 40, a first guide roller 50, and a passivation drive assembly 60 to passivate electrolytic copper foil. This forms a passivation film on both sides of the copper foil, enhancing its oxidation and corrosion resistance, thereby improving battery conductivity, reducing internal resistance, increasing capacity, and ensuring stable electrochemical performance. A lifting drive assembly 140 moves the passivation tank 20 up and down, facilitating the threading of the copper foil and cleaning of the passivation tank, and also adjusting the immersion depth of the copper foil in the solution. An air knife assembly 80, a liquid squeezing assembly 70, a first spray assembly 120, a second spray assembly 130, a washing chamber 22, a traction roller 90, and a second guide roller 100 enable automatic washing of the passivated copper foil to remove the passivation solution, eliminating the need for manual labor and improving production efficiency.

[0072] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An electrolytic copper foil passivation mechanism, characterized by, The electrolytic copper foil passivation mechanism comprises two wall plates arranged opposite to each other, a passivation tank for containing passivation liquid, a plurality of conductive rollers, an anode plate, a first guide roller, a passivation driving assembly and a lifting driving assembly, the passivation tank is located between the two wall plates and is arranged at the top end of a passivation support, the passivation tank has a passivation cavity, the plurality of conductive rollers are located in the passivation cavity and are sequentially and spacedly distributed along the length direction of the passivation tank from left to right, the first end and the second end of the plurality of conductive rollers respectively extend out of the passivation cavity and are rotatably arranged at the inner side of the two wall plates, the anode plate is arranged in the passivation cavity and is located below the plurality of conductive rollers, the first guide roller is located to the right of the plurality of conductive rollers and is located above the passivation cavity, the first end and the second end of the first guide roller are rotatably arranged at the inner side of the two wall plates, the passivation driving assembly is arranged at the outer side of one of the wall plates and is used for driving the plurality of conductive rollers and the first guide roller to rotate, and the lifting driving assembly is arranged at the inner side of the two wall plates and is used for driving the passivation support to move up and down.

2. The electrolytic copper foil passivation mechanism according to claim 1, wherein, The conductive roller partially protrudes from the top end of the passivation tank, the top end of the passivation tank is provided with a first groove and a second groove corresponding to the conductive roller, the first end and the second end of the conductive roller respectively extend out of the passivation cavity through the first groove and the second groove, the inner side of the two wall plates is respectively provided with two first mounting holes corresponding to the conductive roller and two second mounting holes corresponding to the first guide roller, the first end and the second end of the conductive roller are rotatably arranged in the corresponding two first mounting holes, and the first end of the conductive roller extends out of the corresponding first mounting hole, and the first end and the second end of the first guide roller are rotatably arranged in the corresponding two second mounting holes, and the first end of the first guide roller extends out of the corresponding second mounting hole. The passivation driving assembly comprises a passivation motor, a speed reducer and a passivation synchronous belt module, the speed reducer is arranged at the outer side of one of the wall plates, the passivation motor is arranged on the speed reducer, the output end of the passivation motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the first end of the plurality of conductive rollers and the first end of the first guide roller through the passivation synchronous belt module.

3. The electrolytic copper foil passivation mechanism according to claim 1, wherein The electrolytic copper foil passivation mechanism further comprises a liquid squeezing assembly, the liquid squeezing assembly is used for extruding the electrolytic copper foil on the first guide roller to squeeze out the remaining passivation liquid on the electrolytic copper foil, the liquid squeezing assembly comprises a liquid squeezing roller and two liquid squeezing driving modules, the liquid squeezing roller is located on one side of the first guide roller, the liquid squeezing roller is located between the two liquid squeezing driving modules, and the two ends of the liquid squeezing roller are rotatably arranged on the two liquid squeezing driving modules, the two liquid squeezing driving modules are connected with the two wall plates respectively, and the two liquid squeezing driving modules are used for driving the liquid squeezing roller to move towards or away from the first guide roller.

4. The electrolytic copper foil passivation mechanism according to claim 3, wherein The extrusion driving module comprises a first extrusion mounting plate, a second extrusion mounting plate, a third extrusion mounting plate and an extrusion cylinder, the top end of each of the two wall plates is provided with a notch, one end of the first extrusion mounting plate of each of the two extrusion driving modules is connected with the inner wall of one end of the notch, one end of the second extrusion mounting plate is connected with the other end of the first extrusion mounting plate, the other end of the second extrusion mounting plate extends leftward, the third extrusion mounting plate is slidingly arranged on the side of the second extrusion mounting plate away from the first extrusion mounting plate, the extrusion cylinder is connected with the other end of the second extrusion mounting plate and located between the third extrusion mounting plate and the second extrusion mounting plate, the output end of the extrusion cylinder is connected with the side of the third extrusion mounting plate close to the second extrusion mounting plate, and the two ends of the extrusion roller are rotatably arranged on the side of the third extrusion mounting plate of each of the two extrusion driving modules away from the second extrusion mounting plate.

5. The electrolytic copper foil passivation mechanism according to claim 1, wherein The electrolytic copper foil passivation mechanism further comprises a wind knife assembly arranged between the plurality of conductive rollers and the first guide roller, the wind knife assembly is used for blowing wind to the electrolytic copper foil to blow off the excess passivation liquid on the electrolytic copper foil, the wind knife assembly is located above the passivation cavity, the wind knife assembly comprises a first wind knife and a second wind knife, the first wind knife and the second wind knife are respectively located on the two sides of the electrolytic copper foil and both are inclined downward in the direction close to the electrolytic copper foil; The side of the first wind knife close to the electrolytic copper foil is provided with a first air outlet, the first air outlet faces the electrolytic copper foil, the side of the first wind knife away from the electrolytic copper foil is provided with a first air inlet connector, the first air inlet connector and the first air outlet are in communication with the inside of the first wind knife, the two ends of the first wind knife are respectively provided with a first connecting shaft and a second connecting shaft, the tail end of the first connecting shaft is connected with a first rotating seat, the inside of one of the wall plates is provided with a first wind knife mounting plate, the first rotating seat is detachably mounted on the side of the first wind knife mounting plate close to the center of the first wind knife, the tail end of the second connecting shaft penetrates through a through hole of a wind knife support, and the second connecting shaft can rotate relative to the wind knife support, and the wind knife support is arranged on the inside of the other wall plate; The side of the second wind knife close to the electrolytic copper foil is provided with a second air outlet, the second air outlet faces the electrolytic copper foil, the two ends of the second wind knife are respectively provided with a third connecting shaft and a second air inlet connector, the tail end of the third connecting shaft is connected with a second rotating seat, the inside of one of the wall plates is provided with a second wind knife mounting plate, the second rotating seat is detachably mounted on the side of the second wind knife mounting plate close to the center of the second wind knife, the outside of the other wall plate is provided with a third wind knife mounting plate, the second air inlet connector penetrates through a through hole of the other wall plate and a through hole of the third wind knife mounting plate, the second air inlet connector can rotate relative to the third wind knife mounting plate and the other wall plate, and the second air inlet connector and the second air outlet are in communication with the inside of the second wind knife.

6. The electrolytic copper foil passivation mechanism of claim 1, wherein, The passivation tank has a washing cavity for containing washing liquid, the washing cavity is located right to the passivation cavity and is separated from the passivation cavity by a partition plate, the first guide roller part is located above the partition plate and the washing cavity, the electrolytic copper foil passivation mechanism further comprises a pulling-over roller, a second guide roller and a guide driving assembly, the pulling-over roller is located in the washing cavity and two ends of the pulling-over roller are rotatably arranged at inner sides of two pulling installation plates, the two pulling installation plates are partially protruded from top ends of the passivation tank and are arranged at inner sides of two wall plates respectively, the second guide roller is located right to the pulling-over roller and above the washing cavity, a first end and a second end of the second guide roller are rotatably arranged at inner sides of the two wall plates respectively, and the guide driving assembly is arranged at an outer side of one of the wall plates and is used to drive the second guide roller to rotate.

7. The electrolytic copper foil passivation mechanism according to claim 6, wherein Inner sides of the two wall plates are respectively provided with two third installation holes corresponding to the first end and the second end of the second guide roller respectively, the first end and the second end of the second guide roller are rotatably arranged in the corresponding two third installation holes respectively, and the first end of the second guide roller extends out of the corresponding third installation hole; The guide driving assembly comprises a guide motor and a guide synchronous belt module, the guide motor is arranged at the outer side of one of the wall plates, and an output end of the guide motor is connected with the first end of the second guide roller through the guide synchronous belt module.

8. The electrolytic copper foil passivation mechanism according to claim 6, wherein The electrolytic copper foil passivation mechanism further comprises a first spraying assembly and a second spraying assembly, the first spraying assembly and the second spraying assembly are respectively used to spray washing liquid to the electrolytic copper foil to wash away residual passivation liquid on the electrolytic copper foil; The first spraying assembly is arranged between the pulling-over roller and the first guide roller and above the washing cavity, the first spraying assembly comprises two first spraying pipes, the two first spraying pipes are respectively located at two sides of the electrolytic copper foil and are arranged in an up-down staggered manner, one end of the first spraying pipe is connected with one end of a first liquid inlet connector, the other end of the first spraying pipe is closed, the other end of the first liquid inlet connector is closed, the other end of the first spraying pipe and the other end of the first liquid inlet connector are respectively arranged at inner sides of two first installation blocks, the two first installation blocks are arranged at inner sides of the two wall plates through two first fixing supports respectively, an inner part of the first liquid inlet connector is communicated with an inner part of the first spraying pipe, an outer wall of the first liquid inlet connector is provided with a first connector liquid inlet opening communicated with the inner part of the first liquid inlet connector, an outer wall of the first spraying pipe is provided with a plurality of first spraying openings, the plurality of first spraying openings are all communicated with the inner part of the first spraying pipe, the plurality of first spraying openings are distributed along a length direction of the first spraying pipe in a spaced manner and the plurality of first spraying openings all face the electrolytic copper foil; The second spray assembly is arranged between the traction roller and the second guide roller and above the washing cavity, and comprises a second spray pipe arranged on one side of the electrolytic copper foil, one end of the second spray pipe is connected with one end of a second liquid inlet connector, the other end of the second spray pipe is closed, the other end of the second liquid inlet connector is closed, the other end of the second spray pipe and the other end of the second liquid inlet connector are arranged on the inner sides of two second mounting blocks respectively, the two second mounting blocks are arranged on the inner sides of the two wallboards through two second fixing supports respectively, the inside of the second liquid inlet connector is communicated with the inside of the second spray pipe, the outer wall of the second liquid inlet connector is provided with a second connector liquid inlet opening communicated with the inside of the second liquid inlet connector, the outer wall of the second spray pipe is provided with a plurality of second spray openings communicated with the inside of the second spray pipe, the plurality of second spray openings are distributed along the length direction of the first spray pipe and face the electrolytic copper foil.

9. The electrolytic copper foil passivation mechanism according to claim 6, wherein A first flow guide plate is arranged below the first guide roller, the first flow guide plate is arranged on the right side of the passivation cavity and partially above the washing cavity, one end of the first flow guide plate is arranged at the top end of the partition plate, the other end of the first flow guide plate is inclined upward towards the washing cavity, and a second flow guide plate is arranged below the second guide roller, the second flow guide plate is arranged on the right side of the washing cavity, one end of the second flow guide plate is arranged at the top end of the passivation tank, and the other end of the second flow guide plate is inclined upward away from the washing cavity.

10. The electrolytic copper foil passivation mechanism according to claim 6, wherein The bottom end of the passivation tank is provided with a first liquid inlet opening and a second liquid inlet opening, the first liquid inlet opening is communicated with the inside of the passivation cavity, and the second liquid inlet opening is communicated with the inside of the washing cavity. The two ends of the passivation tank are respectively provided with a first overflow pipe and a second overflow pipe, the inner wall of the end of the passivation cavity close to the first overflow pipe is provided with a first overflow opening, the inner wall of the end of the washing cavity close to the second overflow pipe is provided with a second overflow opening, the first overflow opening and the second overflow opening are close to the top end of the passivation tank, the first overflow opening is respectively communicated with the inside of the passivation cavity and the inside of the first overflow pipe, the second overflow opening is respectively communicated with the inside of the washing cavity and the inside of the second overflow pipe, the bottom end of the first overflow pipe and the bottom end of the second overflow pipe are respectively provided with a first liquid outlet opening and a second liquid outlet opening, the first liquid outlet opening is communicated with the inside of the first overflow pipe, and the second liquid outlet opening is communicated with the inside of the second overflow pipe.

11. The electrolytic copper foil passivation mechanism of claim 1, wherein, The lifting drive assembly comprises two lifting cylinders arranged opposite to each other, the two lifting cylinders are arranged on the inner sides of the two wallboards, and the output ends of the two lifting cylinders are connected with the bottom ends of the passivation supports respectively. The inner side of the wallboard is provided with a guide seat, the guide seat has a through hole penetrating through the top end and the bottom end, a guide rod is arranged in the through hole of the guide seat, the guide rod is movable up and down relative to the guide seat, the top end of the guide rod is connected with the bottom end of the passivation support, the bottom end of the guide rod is located below the guide seat, a linear bearing is arranged in the through hole of the guide seat, and the linear bearing is sleeved on the outer periphery of the guide rod.

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