A collection and storage screening device

Abstract

This utility model discloses a collection and screening device, including a screening mechanism and a tableting mechanism. The screening mechanism includes a box, a primary screen, a secondary screen, and a waste collection box. The inlet of the box is connected to the outlet of the tablet press. The primary screen, the secondary screen, and the waste collection box are arranged sequentially along the height of the box. The primary screen is used to intercept large-diameter waste, the secondary screen is used to allow small-diameter waste to pass through, and the waste collection box is used to collect both large-diameter and small-diameter waste. The tableting mechanism includes a tableting box, the outlet of the secondary screen is connected to the inlet of the tableting box, and the tableting box contains electrode liquid. The beneficial effects of this utility model are: through the direct connection between the screening mechanism and the tableting mechanism, the automated flow of the electrode sheets from screening to tableting begins is realized, eliminating the need for manual transfer and improving production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of battery production, specifically to a collection, storage, and screening device. Background Technology

[0002] In the production of lithium-ion batteries, the processing precision of the positive and negative electrode sheets directly affects the battery's capacity, cycle life, and safety. The battery pressing machine is a key piece of equipment in electrode processing, applying pressure to the coated electrode sheets to ensure uniform density and adequate thickness. After pressing, the electrode sheets need to be sieved to remove defective products with unacceptable diameter and thickness, while simultaneously preparing them for the subsequent foaming process.

[0003] Chinese utility model patent CN204464380U discloses a silver-zinc battery positive electrode silver sheet pressing machine, which includes a silver powder pressing mold. An upper pressure plate is fixedly provided above the silver powder pressing mold, and a pressing mechanism is provided below the silver powder pressing mold. The silver powder pressing mold includes a mold body with a countersunk cavity. A core pressing through hole is provided at the bottom of the mold cavity. A pressing mold core is provided in the mold cavity. The pressing mechanism pushes the pressing mold core towards the upper pressure plate to press the silver sheet.

[0004] The aforementioned technologies have the following drawbacks: after the electrode sheets are formed, it is necessary to manually sieve out the electrode sheets that do not meet the size requirements, and then transfer the qualified electrode sheets to the foaming equipment for foaming processing. The process connection is poor, the efficiency is low, and the electrode sheets are easily contaminated during the transfer process, resulting in low quality. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a collection and screening device to solve the technical problems of the need for multiple transfers in the forming, screening and foaming of electrode sheets in the prior art.

[0006] To achieve the above technical objectives, the present invention provides a collection and screening device, including a screening mechanism. The screening mechanism includes a housing, a primary screen, a secondary screen, and a waste collection box. The inlet of the housing is connected to the outlet of a tablet press. The primary screen, secondary screen, and waste collection box are sequentially arranged within the housing along its height. The primary screen is used to intercept large-diameter waste, the secondary screen allows small-diameter waste to pass through, and the waste collection box collects both large-diameter and small-diameter waste. The bubble-forming mechanism includes a bubble-forming box, the outlet of the secondary screen is connected to the inlet of the bubble-forming box, and the bubble-forming box contains electrode liquid.

[0007] In some embodiments, the screening mechanism further includes a vibration motor mounted on the housing.

[0008] In some embodiments, the screening mechanism further includes a negative pressure dust collector, which is installed on the housing and the inlet of the negative pressure dust collector is connected to the outlet of the housing.

[0009] In some embodiments, the screening mechanism further includes positioning blocks and pins. The two positioning blocks are respectively connected to the primary screen and the secondary screen. The housing is provided with positioning grooves for accommodating the positioning blocks. The housing is provided with insertion holes. The positioning blocks are provided with slots. The pin passes through the insertion holes and slots.

[0010] In some embodiments, the end of the pin near the slot is spherical.

[0011] In some embodiments, the bubble-forming mechanism further includes a drying screen and a driving assembly. The drying screen is located at the outlet of the secondary screen and is slidably connected to the inside of the bubble-forming box along the height direction of the bubble-forming box. The fixed end of the driving assembly is connected to the bubble-forming box, and the movable end of the driving assembly is connected to the drying screen.

[0012] In some embodiments, the drive assembly includes a cylinder mounted on a bubble box, the piston rod of the cylinder being connected to a drying mesh.

[0013] In some embodiments, the bubble-forming mechanism further includes a circulation pump, the outlet of which is connected to the inlet of the bubble-forming chamber, and the outlet of the bubble-forming chamber is connected to the inlet of the circulation pump.

[0014] In some embodiments, the bubble-forming mechanism further includes a filter screen connected to the inlet of the bubble-forming box.

[0015] In some embodiments, the bubble sheet mechanism further includes a slag collection box connected to the inlet of the bubble sheet box and located below the filter screen.

[0016] Compared with the prior art, the beneficial effects of this utility model include: through the design of direct connection between the screening mechanism and the foaming mechanism, the electrode sheets are automatically transferred from the completion of screening to the start of foaming, eliminating the need for manual transfer and improving production efficiency and quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the collection, storage, and screening device provided by this utility model; Figure 2 This utility model provides Figure 1 Enlarged view of the local structure at point A; Figure 3 This utility model provides Figure 1 Enlarged view of the local structure at point B.

[0018] Explanation of reference numerals in the attached figures: 1. Screening mechanism; 11. Box body; 12. Primary screen; 13. Secondary screen; 14. Waste collection box; 15. Vibrating motor; 16. Negative pressure dust collector; 2. Tableting machine; 3. Bubble-forming mechanism; 31. Bubble-forming box; 32. Drying screen; 33. Drive assembly; 331. Cylinder; 34. Circulating pump; 35. Filter screen; 36. Slag collection box; 4. Positioning block; 41. Pin; 42. Positioning groove; 43. Insertion hole; 44. Slot. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] This utility model provides a collection and screening device, the structure of which is as follows: Figure 1 - Figure 3 As shown, it includes a screening mechanism 1 and a bubble sheet mechanism 3.

[0021] The screening mechanism 1 includes a housing 11, a primary screen 12, a secondary screen 13, and a waste collection box 14. The inlet of the housing 11 is connected to the outlet of the tablet press 2. The primary screen 12, the secondary screen 13, and the waste collection box 14 are arranged sequentially inside the housing 11 along the height direction of the housing 11. The primary screen 12 is used to intercept large-diameter waste, the secondary screen 13 is used to allow small-diameter waste to pass through, and the waste collection box 14 is used to collect both large-diameter and small-diameter waste.

[0022] The bubble-forming mechanism 3 includes a bubble-forming box 31, the outlet of the secondary screen 13 is connected to the inlet of the bubble-forming box 31, and the bubble-forming box 31 is filled with electrode liquid.

[0023] During operation, the electrode sheets formed by the tablet press 2 enter through the inlet of the housing 11 and first fall onto the primary screen 12. Large-diameter waste materials larger than the acceptable size are intercepted by the primary screen 12 and slide down the screen surface to the bottom of the waste collection box 14; electrode sheets with the required diameter pass through the primary screen 12 and fall onto the secondary screen 13. Small-diameter waste materials smaller than the acceptable size pass through the secondary screen 13 and fall into the bottom of the waste collection box 14; acceptable electrode sheets slide along the secondary screen 13 towards the outlet. The outlet of the secondary screen 13 is directly connected to the inlet of the tableting box 31. After screening, the acceptable electrode sheets do not require manual transfer and slide directly into the electrode solution inside the tableting box 31.

[0024] In this invention, the design of direct connection between the screening mechanism 1 and the bubble sheet mechanism 3 enables automated transfer of the electrode sheets from screening completion to bubble sheet start, eliminating the need for manual handling and improving production efficiency and quality.

[0025] To improve screening results, please refer to... Figure 1 In a preferred embodiment, the screening mechanism 1 further includes a vibration motor 15, which is mounted on the housing 11.

[0026] During use, the vibrating motor 15 is installed on the side wall of the housing 11, and the vibration force is transmitted to the primary screen 12 and the secondary screen 13 through the housing 11. When the electrode falls on the screen, the high-frequency vibration causes the electrode to bounce and translate, avoiding screening dead zones caused by static accumulation.

[0027] To improve the cleanliness of the electrode sheets, please refer to... Figure 1 In a preferred embodiment, the screening mechanism 1 further includes a negative pressure dust collector 16, which is installed on the housing 11 and whose inlet is connected to the outlet of the housing 11.

[0028] During use, the negative pressure dust collector 16 creates an airflow field through the outlet of the housing 11. Dust generated during the electrode sieving process is adsorbed by the airflow, filtered by the dust collector filter, and collected in the dust collection box. This effectively avoids performance degradation caused by the reaction of dust with the electrode liquid during subsequent electrode lamination.

[0029] For easy assembly and disassembly of the primary screen 12 and the secondary screen 13, please refer to... Figure 2 In a preferred embodiment, the screening mechanism 1 further includes a positioning block 4 and a pin 41. The two positioning blocks 4 are respectively connected to the primary screen 12 and the secondary screen 13. The housing 11 is provided with a positioning groove 42 for accommodating the positioning block 4. The housing 11 is provided with an insertion hole 43. The positioning block 4 is provided with a slot 44. The pin 41 passes through the insertion hole 43 and the slot 44.

[0030] When using the screen, the positioning block 4 is inserted along the positioning groove 42. The screen is automatically aligned with the preset installation position by the guiding action of the groove wall, ensuring the level deviation between the primary screen 12 and the secondary screen 13. After the positioning block 4 is fully inserted into the positioning groove 42, the slot 44 on the positioning block 4 is automatically aligned with the insertion hole 43 on the housing 11. At this time, the pin 41 can pass smoothly through the insertion hole 43 and the slot 44. The positioning block 4 is rigidly fixed in the positioning groove 42 by interference fit, which restricts the axial movement and radial rotation of the screen under vibration conditions.

[0031] To make it easier for pin 41 to slide into slot 44, please refer to... Figure 2 In a preferred embodiment, the end of the pin 41 near the slot 44 is spherical.

[0032] When in use, the spherical end has spherical guiding characteristics. When there is a slight coaxiality deviation between the pin 41 and the insertion hole 43 and the slot 44, the spherical surface can automatically correct the angle of the pin 41 through the contact slope, guiding the pin 41 smoothly into the slot 44.

[0033] To improve the drying and transfer rate of electrodes after the foaming process, please refer to... Figure 1 In a preferred embodiment, the bubble-forming mechanism 3 further includes a drying screen 32 and a driving component 33. The drying screen 32 is located at the outlet of the secondary screen 13. The drying screen 32 is slidably connected to the bubble-forming box 31 along the height direction of the bubble-forming box 31. The fixed end of the driving component 33 is connected to the bubble-forming box 31, and the movable end of the driving component 33 is connected to the drying screen 32.

[0034] In use, the drive assembly 33 can drive the drying mesh 32 to move up and down along the height direction of the blister box 31: when the electrode needs to be blistered, the drive assembly 33 drives the drying mesh 32 down into the electrode liquid in the blister box 31; after the blistering is completed, the drive assembly 33 drives the drying mesh 32 up to the top of the blister box 31, and after drying, the electrode is directly transferred to the next process.

[0035] To drive the drying screen 32 to rise and fall, please refer to... Figure 1 In a preferred embodiment, the drive assembly 33 includes a cylinder 331, which is mounted on the bubble box 31, and the piston rod of the cylinder 331 is connected to the drying mesh 32.

[0036] During use, once the electrode falls into the drying mesh 32, the control system sends a signal, the solenoid valve switches to the air intake state, the rodless chamber of cylinder 331 is inflated, the piston rod extends and drives the drying mesh 32 downwards until the drying mesh 32 is completely immersed in the electrode liquid in the electrode bath 31. After the electrode bath is completed, the control system sends a reset signal, the solenoid valve switches to the exhaust state, the rodless chamber of cylinder 331 is deflated, the piston rod retracts under the action of the reset spring, and the drying mesh 32 rises.

[0037] To improve the soaking effect, please refer to Figure 1 In a preferred embodiment, the bubble-forming mechanism 3 further includes a circulation pump 34, the outlet of which is connected to the inlet of the bubble-forming box 31, and the outlet of the bubble-forming box 31 is connected to the inlet of the circulation pump 34.

[0038] During static soaking, the reaction between the surface active material of the electrode and the electrode solution can lead to a decrease in the concentration of the electrode solution in certain areas, resulting in significant differences in the soaking effect among electrodes from the same batch. A circulation pump 34 drives the electrode solution to continuously flow between the soaking tank 31 and the circulation pipeline, forming a dynamic circulation: the electrode solution flows out from the outlet of the soaking tank 31, is pressurized by the circulation pump 34, and returns from the inlet of the soaking tank 31, creating a vortex in the liquid within the tank and completely eliminating the concentration gradient. This improves the consistency of battery capacity.

[0039] To improve the cleanliness of the electrode solution, please refer to... Figure 3 In a preferred embodiment, the bubble-forming mechanism 3 further includes a filter screen 35 connected to the inlet of the bubble-forming box 31.

[0040] During use, the electrode solution may carry suspended impurities such as aging debris that has detached from the inner wall of the pipe and electrode powder remaining from previous processes during circulation. Filter 35 is installed at the inlet of the electrode bath 31 to intercept these suspended impurities and prevent them from entering the electrode bath 31 with the electrode solution and coming into contact with the electrodes.

[0041] To collect impurities in the electrode solution, please refer to... Figure 3 In a preferred embodiment, the bubble sheet mechanism 3 further includes a slag collection box 36, which is connected to the inlet of the bubble sheet box 31 and is located below the filter screen 35.

[0042] During use, the impurities intercepted by the filter screen 35 will naturally fall into the slag collection box 36 below under the action of gravity and liquid flushing, eliminating the need for frequent shutdowns to clean the filter screen 35 and improving the effective operating time of the equipment.

[0043] To better understand this utility model, the following is combined with... Figure 1 - Figure 3 The working principle of a collection and screening device according to the present invention is described in detail as follows: Electrodes formed by the tablet press 2 enter through the inlet of the housing 11 and first fall onto the primary screen 12. Large-diameter waste materials larger than the acceptable size are intercepted by the primary screen 12 and slide down the screen surface to the bottom of the waste collection box 14; electrode sheets with the required diameter pass through the primary screen 12 and fall onto the secondary screen 13. Small-diameter waste materials smaller than the acceptable size pass through the secondary screen 13 and fall into the bottom of the waste collection box 14; acceptable electrode sheets slide along the secondary screen 13 towards the outlet. The outlet of the secondary screen 13 is directly connected to the inlet of the tablet sizing box 31. After screening, the acceptable electrode sheets do not require manual transfer and slide directly into the electrode liquid inside the tablet sizing box 31.

[0044] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A collection, storage, and screening device, characterized in that, include: A screening mechanism, comprising a housing, a primary screen, a secondary screen, and a waste collection box, wherein the inlet of the housing is connected to the outlet of the tablet press, and the primary screen, secondary screen, and waste collection box are sequentially arranged within the housing along its height. The primary screen is used to intercept large-diameter waste, the secondary screen is used to allow small-diameter waste to pass through, and the waste collection box is used to collect both large-diameter and small-diameter waste; and... The bubble-forming mechanism includes a bubble-forming box, the outlet of the secondary screen is connected to the inlet of the bubble-forming box, and the bubble-forming box contains electrode liquid.

2. The collection, storage, and screening device according to claim 1, characterized in that, The screening mechanism also includes a vibration motor, which is mounted on the housing.

3. The collection, storage, and screening device according to claim 1, characterized in that, The screening mechanism also includes a negative pressure dust collector, which is installed on the housing and the inlet of the negative pressure dust collector is connected to the outlet of the housing.

4. The collection, storage, and screening device according to claim 1, characterized in that, The screening mechanism also includes positioning blocks and pins. The two positioning blocks are respectively connected to the primary screen and the secondary screen. The box body is provided with positioning grooves for accommodating the positioning blocks. The box body is provided with insertion holes. The positioning blocks are provided with slots. The pins pass through the insertion holes and slots.

5. A collection, storage, and screening device according to claim 4, characterized in that, The end of the pin near the slot is spherical.

6. The collection, storage, and screening device according to claim 1, characterized in that, The bubble-forming mechanism also includes a drying screen and a drive assembly. The drying screen is located at the outlet of the secondary screen and is slidably connected to the inside of the bubble-forming box along the height direction of the bubble-forming box. The fixed end of the drive assembly is connected to the bubble-forming box, and the movable end of the drive assembly is connected to the drying screen.

7. A collection, storage, and screening device according to claim 6, characterized in that, The drive assembly includes a cylinder mounted on a bubble box, and the piston rod of the cylinder is connected to a drying mesh.

8. A collection, storage, and screening device according to claim 1, characterized in that, The bubble-forming mechanism also includes a circulation pump, the outlet of which is connected to the inlet of the bubble-forming box, and the outlet of the bubble-forming box is connected to the inlet of the circulation pump.

9. A collection, storage, and screening device according to claim 8, characterized in that, The bubble-forming mechanism also includes a filter screen connected to the inlet of the bubble-forming box.

10. A collection, storage, and screening device according to claim 9, characterized in that, The bubble sheet mechanism also includes a slag collection box, which is connected to the inlet of the bubble sheet box and is located below the filter screen.

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