Automatic casing device for cylindrical battery cell

Abstract

The application discloses a cylindrical battery cell automatic casing device, which comprises a rack power assembly, a transmission assembly and a material transmission assembly. Before the transmission assembly works, the mold materials with cells are arranged in the mold feeding port in sequence to supply the transmission assembly, and the zinc shells to be filled with cells are arranged in the zinc shell feeding port in sequence. Under the driving of the driving motor, the transmission assembly starts to rotate, the mold feeding port in the material transmission assembly supplies the mold materials with cells in sequence, and the zinc shell feeding port supplies the zinc shells to be filled with cells in sequence. The zinc shells and the cell molds correspond to each other in the spindle direction of the transmission assembly, and the transmission assembly transfers the cells in the mold materials to the zinc shells without adhesion. The application realizes the automatic adhesion-free filling of the cylindrical battery cells into the zinc shells through the cooperation of mechanical parts, and improves the production efficiency of the cylindrical batteries.

Description

Technical Field

[0001] This invention relates to an automatic casing device for cylindrical battery cells, and more particularly to a device for transferring and loading battery cells into cylindrical zinc casings without adhesion after pre-forming them in a mold, belonging to the field of battery production. Background Technology

[0002] In recent years, with the increasing demand for cylindrical batteries in people's daily lives, a strong market demand has been formed. However, in the production of cylindrical batteries, the degree of automation and intelligence of battery production equipment is not high, and the production reliability cannot meet the demand. Manufacturers have increasingly higher requirements for the production efficiency and stability of battery production equipment.

[0003] Therefore, research on battery production equipment has broad prospects. Research has revealed that battery production involves many complex processes, with most equipment relying on imports and suffering from problems such as low production efficiency, poor stability, and low battery product qualification rate.

[0004] The loading of battery cells into the zinc casing of cylindrical batteries is a crucial step in battery manufacturing, and the quality of this loading directly affects the performance of the finished battery. Currently, during the transfer of pre-formed cells into the zinc casing, the cells, which are mixtures of carbon powder and electrolyte in the pre-forming mold, tend to stick to the mold or the powder pressing head during the transfer process. This is highly detrimental to high-efficiency production. Therefore, there is an urgent need for a device to solve this problem, ensuring the production efficiency and performance of cylindrical batteries and promoting the development of the battery industry. Summary of the Invention

[0005] To address the current problems of insufficient equipment, low reliability, and low automation in battery cell loading into zinc casings, this invention provides an automatic cylindrical battery cell loading device. This device, through the cooperation of mechanical components, completes the automatic and non-adhesive loading of cylindrical battery cells into zinc casings, thereby improving battery production efficiency.

[0006] The technical solution adopted in this invention is as follows:

[0007] An automatic casing device for cylindrical battery cells includes a frame power assembly, a transmission assembly assembly, and a material conveying assembly.

[0008] Furthermore, the frame power assembly includes a frame, a gearbox, and a drive motor. The frame comprises a frame structure consisting of several crossbeams, several longitudinal beams, a base plate, several vertical beams, panel supports, a panel, a mounting plate, several columns, a top plate, etc., as well as several planes. The frame serves to bear and support the transmission assembly and material handling assembly. The gearbox and drive motor are fixed to the base plate in the frame and provide power to the transmission assembly.

[0009] Furthermore, the transmission assembly includes a bearing plate, a main shaft, a seated bearing, an upper cam, a working part, a lower cam, a main shaft gear, a pinion, and a support base; the seated bearing includes a first seated bearing, a second seated bearing, a third seated bearing, and a fourth seated bearing. The bearing plate is fixed to the top plate of the frame. The bearing plate supports one end of the main shaft through the first seated bearing and also fixes the upper cam to its lower side; the other end of the main shaft is fixed to the support base by the second seated bearing, so that the upper cam does not rotate with the main shaft. The upper cam is a grooved three-dimensional cam, and the height of the cam curve determines the working position of the upper bow rod in the working part. The lower cam is fixed to the support base and is a three-dimensional cam. The height of the lower cam curve determines the height of the lower bow rod. When the lower bow rod is in a high position, the upper bow rod presses the battery cell in the mold into the zinc shell, and the lower bow rod at the high position of the lower cam presses against the bottom of the zinc shell, so that the bottom of the zinc shell does not deform. The support base is fixed to the panel in the frame, and its main function is to support the short shaft, main shaft and lower cam.

[0010] The main shaft gear is fixed to the main shaft and rotates synchronously with it, transmitting power to the main shaft. The pinion meshes with the main shaft gear and is fixed to a short shaft in the working piece, rotating synchronously with the short shaft. One end of the short shaft is fixed to the support base via a third bearing seat, and the other end is fixed to the panel via a fourth bearing seat.

[0011] Furthermore, the transmission assembly includes a slide block, an upper bow rod, an upper guide seat, a fixing block, an inner seat, a battery cell tray, a zinc shell tray, a lower bow rod, a lower guide seat, and a short shaft. The slide block is fixed to the upper guide seat, and several axially distributed slideways in the slide block support the inner bearing in the upper bow rod to slide axially within these slideways. The upper guide seat supports the upper bow rod and guides its sliding.

[0012] The upper bow rod includes an inner bearing, an outer bearing, a bearing housing, a locking nut, a bushing, a bearing, a locking sleeve, a pressure cap, and a bow rod body. The inner and outer bearings are fixed to the bearing housing. The outer bearing slides in the cam groove of the upper cam to ensure the axial vertical movement of the upper bow rod, while the inner bearing slides axially in the axial slideway of the slide seat. One end of the bow rod body is the bow rod head for the lower pressing cell, and the other end is provided with a pressure cap, a bearing, a bushing, and a locking nut. The pressure cap and bearing housing are located on both sides of the bearing. The locking nut at the end of the bow rod body prevents axial movement of the bearing from the bow rod body. The outer ring of the bearing mates with the bearing housing, and the bottom of the bearing housing is positioned and locked by the pressure cap and the locking sleeve to prevent axial movement of the bearing housing. The bearing housing and the bow rod body in the upper bow rod can rotate freely relative to each other. The axial surface of the bow rod body is provided with a helical groove whose width and depth are sufficient to accommodate the end face bearing, allowing the end face bearing to slide within the helical groove and guide the bow rod body to spirally ascend or descend along the groove. The axial projection height of the helical groove on the bow rod body is not less than the difference in axial projection position between the high and low positions of the upper cam.

[0013] The fixing block includes a horizontal block, a fixed shaft, a small bushing, and an end face bearing. The horizontal block is fixed to the upper guide seat. Each fixing block corresponds to an upper bow rod, and the function of the fixing block is to limit and guide the position of the upper bow rod. The fixed shaft is fixed to the horizontal block, and the horizontal block serves to limit the fixed shaft. The small bushing is located on the fixed shaft, and its function is to hold the inner ring of the end face bearing, ensuring that the outer ring of the bearing can rotate freely. The end face bearing is fixed to the fixed shaft, but its outer ring can rotate freely. This outer ring can slide in the helical groove on the bow rod body of the upper bow rod, so as to guide the bow rod body to rotate around the main shaft while also sliding axially on the main shaft, and the bow rod body itself also rotates under the guidance of the end face bearing and the helical groove. The rotation of the bow rod body causes the bow rod head to rotate while pressing the battery cell into the zinc shell in the battery cell mold, so as to ensure that the bow rod head of the upper bow rod adheres to as little carbon powder as possible from the battery cell.

[0014] The inner seat is a cylindrical part located within the working part and fixedly connected to the main shaft. The upper guide seat, battery cell tray, zinc shell tray, and lower guide seat are all fixedly connected to the inner seat. The inner seat drives the upper guide seat, battery cell tray, zinc shell tray, and lower guide seat to rotate synchronously with the main shaft.

[0015] The battery cell tray includes an upper cover, a rubber pad, a lower cover, and a material tray.

[0016] The material tray is a rotating tray containing the battery cell mold in the working component. It has several circular arcs on its circumference, each slightly larger than the diameter of the battery cell mold. The chamfer at the front end of each circular arc on the material tray is larger than the chamfer at the rear end, guiding the battery cell mold smoothly into the circular arcs. The axial cross-section of the material tray has a three-layer comb structure. The gap between the upper and middle comb structures accommodates the height of the connecting and fixing plate in the material transfer assembly. The circular arcs penetrate the upper and middle combs. The lower layer of the comb teeth on the material tray has threaded countersunk holes for installing the upper and lower pressure caps. A rubber pad is placed between the upper and lower pressure caps. The upper pressure cap, lower pressure cap, and rubber pad are all annular structures. The rubber pad is an elastic sheet, allowing the battery cell to be spirally pressed down by the upper bow rod through the rubber pad into the zinc shell. As the upper bow rod spirals upward, the rubber pad scrapes off any carbon powder adhering to the bow rod head.

[0017] The zinc shell material tray is adjacent to the battery cell material tray. The zinc shell material tray also has several circular arcs, slightly larger than the outer diameter of the zinc shell, evenly distributed along its circumference. The axial cross-section of the zinc shell material tray has a three-layer comb structure, with the gap between the upper and middle comb structures sufficient to accommodate the height of the connecting and fixing plate in the material transfer assembly. The bow core of the lower bow rod can pass through the lower layer of the comb teeth in the zinc shell material tray cross-section and press against the bottom of the zinc shell, preventing the bottom of the zinc shell from being squeezed and deformed by the upper bow rod pressing down on the battery cell.

[0018] The lower bow rod includes a cam bearing, a lower bow rod body, a mounting cover, a fixing head, and a bow core; the lower bow rod can slide up and down in the lower guide seat. The cam bearing is fixed to the end of the lower bow rod, allowing the lower bow rod to rotate circumferentially guided by the cam curve of the lower cam. The fixing head fixes the bow core to the lower bow rod body. The mounting cover is located below the fixing head to prevent excess carbon dust from contaminating the lower bow rod body during operation, thus increasing the sliding friction clearance between the lower bow rod body and the lower guide seat. An axial keyway is provided on the lower bow rod body, which is limited by a limiting key in the lower guide seat, allowing the lower bow rod to slide up and down within a certain range in the lower guide seat.

[0019] The lower guide seat is fixed to the inner seat, and its function is to restrict and support the sliding of the lower bow rod.

[0020] Specifically, the battery cell tray and the zinc shell tray are fixed to the inner seat, and their radial phases are kept consistent. This ensures that the centers of the material-carrying arcs of the battery cell tray and the zinc shell tray are aligned during the operation of the transmission assembly, and that the upper bow rod can accurately press the battery cell in the mold into the zinc shell.

[0021] Furthermore, the material conveying assembly is disposed around the transmission assembly and fixed to the mounting plate of the frame. Its function is to input and output materials. Specifically, it inputs the battery cell mold containing the battery cells into the transmission assembly assembly and outputs the mold after pressing the battery cells into the zinc shell. At the same time, it inputs the zinc shell without battery cells into the transmission assembly assembly and outputs the zinc shell with battery cells into the transmission assembly assembly.

[0022] The material transfer assembly includes a limit bar support base, a limit bar, a mold inlet, a mold outlet, a zinc shell inlet, a zinc shell outlet, and a connecting and fixing plate.

[0023] The mold inlet includes an inner vertical plate, an outer vertical plate, a horizontal plate, and a support column. The outer vertical plate and the inner vertical plate are fixed to the horizontal plate to form a channel, which is fixed to the mounting plate of the frame via the support column. The mold outlet, zinc shell inlet, and zinc shell outlet have the same structure as the mold inlet. The connecting plate fixes the mold inlet and the mold outlet. Similarly, the connecting plate fixes the zinc shell inlet and the zinc shell outlet.

[0024] The limiting strip support base is formed by several horizontal and vertical plates fixedly connected together. The limiting strip is fixedly connected to the limiting strip support base. The limiting strip support base is fixedly connected to the mounting plate of the frame. The limiting strips are located around the battery cell tray and the zinc shell tray of the transmission assembly, respectively, and their function is to ensure that the battery cell mold material and zinc shell material in the battery cell tray and zinc shell tray are in close contact with the arc of the material strip during operation, so as not to tip over.

[0025] Working principle of the invention:

[0026] An automatic cylindrical battery cell assembly device is disclosed. Before the transmission assembly assembly operates, mold materials containing battery cells are sequentially arranged at the mold inlet to supply the transmission assembly assembly. Zinc shells to be fitted with battery cells are also sequentially arranged at the zinc shell inlet. Driven by a motor, the transmission assembly assembly rotates, and the mold inlet of the material transfer assembly sequentially supplies mold materials containing battery cells, while the zinc shell inlet sequentially supplies zinc shells to be fitted with battery cells. The zinc shells and battery cell molds correspond one-to-one along the main axis of the transmission assembly assembly. The battery cell is pre-formed by pressing a mixture of carbon powder, electrolyte, and other substances into a cylindrical ring mold. Because the required cylindrical battery cells have a certain density, zinc shells cannot be directly used as molds; a cylindrical ring mold with certain strength and corrosion resistance is required as the battery cell mold. The battery cells are then transferred from the mold to the zinc shells.

[0027] Based on the axial position control of the upper cam, the upper bow rod rotates during its ascent and descent under the action of the helical positioning groove on the bow rod body. Specifically, the upper bow rod spirals upward and downward when pressing the battery cell into the zinc shell, and a rubber pad is used to scrape the bow rod head as the battery cell is pressed down to prevent carbon powder in the battery cell from sticking to the bow rod head.

[0028] When the battery cell mold material enters the transmission assembly assembly, it enters the circumferential arc-shaped notch in the battery cell material tray, causing the battery cell mold to rotate. Similarly, when the zinc shell material enters the transmission assembly assembly, it enters the circumferential arc-shaped notch in the zinc shell material tray, causing the zinc shell to rotate. The circumferential arc-shaped notches in the battery cell material tray and the zinc shell material tray correspond one-to-one in the main shaft direction and rotate synchronously with the main shaft. Similarly, the zinc shell material and the mold material containing the battery cell correspond one-to-one in the main shaft direction of the transmission assembly assembly and also rotate synchronously with the main shaft. After the upper bow rod presses the battery cell from the mold material into the zinc shell, the empty mold material is output from the mold outlet. The empty mold can be recycled for battery cell pre-forming. After pressing the battery cell into the mold, it is transported back into the device of this invention to transfer the battery cell into the zinc shell without adhesion. The zinc shell material containing the battery cells is output from the zinc shell outlet for the next production and processing step.

[0029] The beneficial effects of this invention are:

[0030] I. A method and apparatus for pressing battery cells into a zinc casing are provided, thereby improving the production efficiency of cylindrical batteries;

[0031] II. It can prevent carbon powder from sticking when the battery cell is transferred from the mold to the zinc shell, which improves the production efficiency of cylindrical batteries and saves the time cost of cleaning the upper bow rod;

[0032] Ⅲ. By pressing the battery cell into the zinc casing using a spiral lifting bow, the loss of battery cell powder can be greatly reduced, ensuring the capacity stability of the finished battery. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0034] Figure 2 This is a schematic diagram of a portion of the frame of the present invention after the removal of the machine frame.

[0035] Figure 3 This is a schematic diagram of the transmission assembly component of the present invention.

[0036] Figure 4 This is a cross-sectional view of the transmission assembly component of the present invention.

[0037] Figure 5 for Figure 4A magnified view of a portion of the image.

[0038] Figure 6 for Figure 4 Another enlarged view of a portion of the image.

[0039] Figure 7 This is a diagram of the upper bow rod.

[0040] Figure 8 for Figure 7 A sectional view.

[0041] Figure 9 This is a diagram of the lower bow rod.

[0042] Figure 10 for Figure 9 A sectional view.

[0043] Figure 11 Outline drawing of the material transfer component.

[0044] Wherein: 1—frame, 2—transmission assembly, 3—material transfer assembly;

[0045] 11—Crossbeam, 12—Longitudinal beam, 13—Base plate, 14—Reduction gearbox, 15—Drive motor, 16—Vertical beam, 17—Panel support, 18—Panel, 19—Mounting plate, 110—Column, 111—Top plate;

[0046] 21—Bearing plate, 22—Main shaft, 24—Upper cam, 25—Working part, 26—Lower cam, 27—Main shaft gear, 28—Pinary gear, 29—Support seat;

[0047] 231—First mounted bearing, 232—Second mounted bearing, 233—Third mounted bearing, 234—Fourth mounted bearing;

[0048] 251—Slide seat, 252—Upper bow rod, 253—Upper guide seat, 254—Fixing block, 255—Inner seat, 256—Battery cell tray, 257—Zinc shell tray, 258—Lower bow rod, 259—Lower guide seat, 2510—Short shaft;

[0049] 2521—Inner bearing, 2522—Outer bearing, 2523—Bearing housing, 2524—Locking nut, 2525—Shaft sleeve, 2526—Bearing, 2527—Locking sleeve, 2528—Gland, 2529—Arch body;

[0050] 2541—Horizontal block, 2542—Fixed shaft, 2543—Small bushing, 2544—End face bearing;

[0051] 2561—Upper pressure cap, 2562—Glue pad, 2563—Lower pressure cap, 2564—Material tray;

[0052] 2581—Cam bearing, 2582—Lower bow rod body, 2583—Mounting cover, 2584—Fixing head, 2585—Bow core;

[0053] 31—Limiting bar support base; 32—Limiting bar; 33—Mold inlet; 34—Mold outlet; 35—Zinc shell inlet; 36—Zinc shell outlet; 37—Connecting fixing plate.

[0054] 331—Inner vertical plate, 332—Outer vertical plate, 333—Horizontal plate, 334—Support column. Detailed Implementation

[0055] The present invention will be further described below with reference to the accompanying drawings. The following description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0056] Example 1

[0057] An automatic casing device for cylindrical battery cells, the overall layout of which is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown.

[0058] Specifically, the device includes a frame power assembly, a transmission assembly 2, and a material transfer assembly 3.

[0059] like Figure 1 As shown, the frame power assembly includes a frame 1, a reduction gearbox 14, and a drive motor 15 that provide power to the transmission assembly 2. The reduction gearbox 14 and drive motor 15 are fixed to the base plate 13 in the frame 1. The frame 1 includes a frame structure composed of several crossbeams 11, several longitudinal beams 12, a base plate 13, several vertical beams 16, a panel support 17, a panel 18, a mounting plate 19, several columns 110, a top plate 111, etc., as well as several planes. The frame 1 serves to bear and support the transmission assembly 2 and the material conveying assembly 3.

[0060] like Figure 2As shown, the transmission assembly 2 includes a bearing plate 21, a main shaft 22, several seated bearings, an upper cam 24, a working piece 25, a lower cam 26, a main shaft gear 27, a pinion 28, and a support base 29. The seated bearings include a first seated bearing 231, a second seated bearing 232, a third seated bearing 233, and a fourth seated bearing 234. The bearing plate 21 is fixed to the frame 1. The bearing plate 21 supports one end of the main shaft 22 via the first seated bearing 231 and also fixes the upper cam 24 to its lower side. The other end of the main shaft 22 is fixed to the support base 29 via the second seated bearing 232, so that the upper cam 24 does not rotate with the main shaft 22. The upper cam 24 is a grooved three-dimensional cam, and the height of the cam curve determines the working position of the upper bow rod 252 in the working piece 25. The lower cam 26 is fixed to the support base 29 and is a three-dimensional cam. The height of the lower cam curve determines the height of the lower bow rod 258. When the lower bow rod 258 is in the high position, the upper bow rod 252 presses the battery cell in the mold into the zinc shell. The lower bow rod 258, at the high position of the lower cam 26, presses against the bottom of the zinc shell, preventing the bottom of the zinc shell from deforming. The support seat 29 is fixed to the panel 18 in the frame 1, and its main function is to support the short shaft 2510, the main shaft 22, and the lower cam 26.

[0061] The main shaft gear 27 is fixedly connected to the main shaft 22 and rotates synchronously with the main shaft 22, transmitting power to the main shaft 22. The pinion 28 meshes with the main shaft gear 27 and is fixedly connected to the short shaft 2510 in the working part, rotating synchronously with the short shaft 2510. The short shaft 2510 is fixed at one end to the support base 29 through the third bearing 233, and at the other end to the panel 18 through the fourth bearing 234.

[0062] Furthermore, the working component 25 of the transmission assembly 2 includes a slide seat 251, an upper bow rod 252, an upper guide seat 253, a fixing block 254, an inner seat 255, a battery cell tray 256, a zinc shell tray 257, a lower bow rod 258, a lower guide seat 259, and a short shaft 2510. The slide seat 251 is fixed to the upper guide seat 253, and several axially distributed axial slides in the slide seat 251 can support the inner bearing 2521 in the upper bow rod 252 to slide axially in the slides. The upper guide seat 253 supports the upper bow rod 252 and guides the upper bow rod 252 to slide.

[0063] The upper bow rod 252 includes an inner bearing 2521, an outer bearing 2522, a bearing seat 2523, a locking nut 2524, a bushing 2525, a bearing 2526, a locking sleeve 2527, a pressure cap 2528, and a bow rod body 2529. The inner bearing 2521 and the outer bearing 2522 are fixed to the bearing seat 2523. The outer bearing 2522 slides in the cam groove of the upper cam 24 to ensure the axial up-and-down movement of the upper bow rod 252, while the inner bearing 2521 slides axially in the axial slide rail of the slide rail seat 251. One end of the bow rod body 2529 is the bow rod head for pressing down the battery cell, and the other end is provided with a locking nut 2524, a bushing 2525, a bearing 2526, and a pressure cap 2528. The pressure cap 2528 and the bearing seat 2523 are located on both sides of the bearing 2526. A locking nut 2524 is provided at the end of the bow rod body 2529 to prevent the bearing 2526 from moving axially. The outer ring of the bearing 2526 mates with the bearing seat 2523. The bottom of the bearing seat 2523 is positioned and locked by a pressure cap 2528 and a locking sleeve 2527 to prevent axial movement of the bearing seat 2523. The bearing seat 2523 and the bow rod body 2529 in the upper bow rod 252 can rotate freely relative to each other. The shaft surface of the bow rod body 2529 is provided with a helical groove of width and depth sufficient to accommodate the end face bearing, allowing the end face bearing 2544 to slide in the helical groove and guide the bow rod body 2529 to spirally rise or fall according to the helical groove. The axial projection height of the helical groove on the bow rod body 2529 is not less than the difference in projection position between the high and low axial surfaces of the upper cam 24.

[0064] Specifically, the fixing block 254 includes a horizontal block 2541, a fixing shaft 2542, a small bushing 2543, and an end face bearing 2544. The horizontal block 2541 is fixedly connected to the upper guide seat 253. Each fixing block 254 corresponds to an upper bow rod 252, and the function of the fixing block 254 is to limit and guide the position of the upper bow rod 252. The fixing shaft 2542 is fixedly connected to the horizontal block 2541, and the horizontal block 2541 serves to limit the fixing shaft 2542. The small bushing 2543 is located on the fixing shaft 2542, and its function is to hold the inner ring of the end face bearing 2544, ensuring that the outer ring of the bearing can rotate freely. The end face bearing 2544 is fixed to the fixed shaft 2542, but its outer ring can rotate freely. This outer ring can slide in the helical groove on the bow body 2529 of the upper bow rod 252, guiding the bow body 2529 to rotate around the main shaft 22 while simultaneously sliding axially along the main shaft 22. Furthermore, the bow body 2529 itself also rotates under the guidance of the end face bearing 2544 and the helical groove. This rotation of the bow body 2529 causes the bow head to rotate simultaneously as it presses the battery cell into the zinc shell within the battery cell mold, ensuring that the bow head of the upper bow rod 252 adheres to as little carbon powder as possible from the battery cell.

[0065] The inner seat 255 is a cylindrical part located within the working part 25 and fixedly connected to the main shaft 22. The upper guide seat 253, the battery cell tray 256, the zinc shell tray 257, and the lower guide seat 259 are all fixedly connected to the inner seat 255. The inner seat 255 drives the upper guide seat 253, the battery cell tray 256, the zinc shell tray 257, and the lower guide seat 259 to rotate synchronously with the main shaft 22.

[0066] The battery cell tray 256 includes an upper pressure cover 2561, a rubber pad 2562, a lower pressure cover 2563, and a material tray 2564.

[0067] The material tray 2564 is a material-carrying turntable in the working piece 25 that contains the battery cell mold. It has several material-carrying arcs, slightly larger than the diameter of the battery cell mold, evenly distributed along its circumference. The front chamfer of each material-carrying arc on the material tray 2564 is larger than the rear chamfer, which guides the battery cell mold smoothly into the material-carrying arcs. The axial cross-section of the material tray 2564 is a three-layer comb structure. The gap between the upper and middle comb structures can accommodate the height of the connecting and fixing plate 37 in the material transfer assembly 3. The material-carrying arcs penetrate the upper and middle combs. The lower layer of the comb teeth in the cross-section of the material tray 2564 has threaded countersunk holes for installing the upper pressure cover 2561 and the lower pressure cover 2563. A rubber pad 2562 is provided between the upper pressure cover 2561 and the lower pressure cover 2563. The upper pressure cover 2561, the lower pressure cover 2563, and the rubber pad 2562 are all annular structures. The adhesive pad 2562 is an elastic film, through which the battery cell can be spirally pressed down by the upper bow rod 252 and enter the zinc shell. When the upper bow rod 252 spirals upward, the adhesive pad 2562 can scrape off the carbon powder adhering to the bow rod head.

[0068] The zinc shell material tray 257 is arranged adjacent to the battery cell material tray 256. The zinc shell material tray 257 also has several material-carrying arcs, slightly larger than the outer diameter of the zinc shell, evenly arranged in the circumferential direction. The axial cross-section of the zinc shell material tray 257 is a three-layer comb tooth structure, and the gap between the upper and middle comb tooth structures can accommodate the height of the connecting and fixing plate 37 in the material transfer assembly 3. The bow core 2585 of the lower bow rod 258 can pass through the lower layer of the comb teeth in the cross-section of the zinc shell material tray 257 and press against the bottom of the zinc shell, preventing the bottom of the zinc shell from being squeezed and deformed when the upper bow rod 252 presses down on the battery cell.

[0069] The lower bow rod 258 includes a cam bearing 2581, a lower bow rod body 2582, a mounting cover 2583, a fixing head 2584, and a bow core 2585; the lower bow rod 258 can slide up and down in the lower guide seat 259. The cam bearing 2581 is fixed to the end of the lower bow rod 258, allowing the lower bow rod 258 to rotate circumferentially guided by the cam curve of the lower cam 26. The fixing head 2584 fixes the bow core 2585 to the lower bow rod body 2582. The mounting cover 2583 is located below the fixing head 2584 to prevent excess carbon powder from contaminating the lower bow rod body 2582 of the lower bow rod 258 during the operation of the working part 25, thus increasing the sliding friction gap between the lower bow rod body 2582 and the lower guide seat 259. The lower bow rod 2582 is provided with an axial keyway, which can be limited by the limiting key in the lower guide seat 259, so that the lower bow rod 258 can slide up and down within a range in the lower guide seat 259.

[0070] The lower guide seat 259 is fixed to the inner seat 255, and its function is to restrict and support the sliding of the lower bow rod 258.

[0071] Specifically, such as Figure 3 and Figure 4 As shown, the battery cell tray 256 and the zinc shell tray 257 are fixed to the inner seat 255, and their radial phases are kept consistent. This ensures that the centers of the material-carrying arcs of the battery cell tray 256 and the zinc shell tray 257 are aligned during the operation of the transmission assembly 2, and that the upper bow rod 252 can accurately press the battery cell in the mold into the zinc shell.

[0072] The material conveying component 3 is disposed around the transmission assembly component 2 and fixed to the mounting plate 19 of the frame 1. Its function is to input and output materials. Specifically, it inputs the battery cell mold containing the battery cell into the transmission assembly component 2 and outputs the mold after pressing the battery cell into the zinc shell. At the same time, it inputs the zinc shell without the battery cell into the transmission assembly component 2 and outputs the zinc shell with the battery cell inside the zinc shell from the transmission assembly component 2.

[0073] Furthermore, the material transfer assembly 3 includes a limit bar support 31, a limit bar 32, a mold inlet 33, a mold outlet 34, a zinc shell inlet 35, a zinc shell outlet 36, and a connecting fixing plate 37.

[0074] The mold inlet 33 includes an inner vertical plate 331, an outer vertical plate 332, a horizontal plate 333, and a support column 334. The outer vertical plate 332 and the inner vertical plate 331 are fixed to the horizontal plate 333 to form a channel, which is fixed to the mounting plate 19 of the frame 1 via the support column 334. The mold outlet 34, zinc shell inlet 35, and zinc shell outlet 36 have the same structure as the mold inlet 33. The connecting fixing plate 37 fixes the mold inlet 33 and the mold outlet 34. Similarly, the connecting fixing plate 37 fixes the zinc shell inlet 35 and the zinc shell outlet 36.

[0075] The limiting strip support base 31 is formed by several horizontal and vertical plates fixedly connected together. The limiting strip 32 is fixedly connected to the limiting strip support base 31. The limiting strip support base 31 is fixedly connected to the mounting plate 19 of the frame 1. The limiting strip 32 is located around the battery cell tray 256 and the zinc shell tray 257 of the transmission assembly 2, and its function is to limit the battery cell mold material and zinc shell material in the battery cell tray 256 and the zinc shell tray 257 during operation to keep them close to the arc of the material strip and prevent them from tipping over.

[0076] Before the transmission assembly component 2 operates, the mold material containing the battery cells is sequentially arranged at the mold inlet 33 to supply the transmission assembly component 2, and the zinc shells to be filled with the battery cells are also sequentially arranged at the zinc shell inlet 35. Driven by the drive motor 15, the transmission assembly component 2 begins to rotate, and the mold material containing the battery cells is sequentially fed into the mold inlet 33 of the material transmission component 3, while the zinc shell inlet 35 sequentially feeds in the zinc shells to be filled with the battery cells. The zinc shells and battery cells correspond one-to-one in the main axis direction of the transmission assembly component 2. The battery cells are pre-formed by pressing a mixture of carbon powder, electrolyte, and other substances into a mold, which is a cylindrical ring. Because the required battery cells have a certain density, the zinc shells cannot be directly used as molds for forming; a cylindrical ring mold with certain strength and corrosion resistance is required as the battery cell mold, and then the battery cells are transferred from the mold to the zinc shells.

[0077] Based on the axial position controlled by the upper cam 24, the upper bow rod 252 also rotates during its ascent and descent under the action of the helical positioning groove of the bow rod body 2529. Specifically, the upper bow rod 252 spirals upward and downward when pressing the battery cell into the zinc shell, and uses a rubber pad 2562 to scrape the bow rod head pressing the battery cell to prevent carbon powder in the battery cell from sticking to the bow rod head.

[0078] When the battery cell mold material enters the transmission assembly assembly 2, it enters the circumferential arc-shaped notch in the battery cell material tray 256, causing the battery cell mold to rotate. Similarly, when the zinc shell material enters the transmission assembly assembly 2, it enters the circumferential arc-shaped notch in the zinc shell material tray 257, causing the zinc shell to rotate. The circumferential arc-shaped notches in the battery cell material tray 256 and the zinc shell material tray 257 correspond one-to-one in the main shaft direction and rotate synchronously with the main shaft. Likewise, the zinc shell material and the mold material containing the battery cell correspond one-to-one in the main shaft direction of the transmission assembly assembly 2 and also rotate synchronously with the main shaft. After the upper bow rod 252 presses the battery cell from the mold material into the zinc shell, the empty mold material is output from the mold outlet 34. The empty mold can be recycled for battery cell pre-forming. After pressing the battery cell into the mold, it is conveyed into the device of this invention to transfer the battery cell into the zinc shell without adhesion. The zinc shell material containing the battery cell is output from the zinc shell outlet 36 for the next production process.

Claims

1. An automatic casing device for cylindrical battery cells, characterized in that, It includes a frame power assembly, a transmission assembly (2) and a material transfer assembly (3); The frame power assembly includes a frame (1) and a gearbox 14 and a drive motor 15 fixed on the frame (1); the frame (1) is used to carry and support the transmission assembly (2) and the material conveying assembly (3). The transmission assembly (2) includes a main shaft (22), an upper cam (24), a working part (25), a lower cam (26), a main shaft gear (27), and a pinion (28); the cam (24) is fixedly connected to the main shaft (22); the working part (25) includes a slide seat (251), an upper bow rod (252), an upper guide seat (253), a fixing block (254), an inner seat (255), a battery cell tray (256), a zinc shell tray (257), a lower bow rod (258), a lower guide seat (259), and a short shaft (2510); the slide seat (251) is fixedly connected to the upper guide seat (253), and the slide seat (251) has several axial slides distributed circumferentially, which are used to support the upper bow rod (258). The inner bearing (2521) in 52) slides axially in the slide; the upper guide seat (253) supports the upper bow rod (252) and guides the upper bow rod (252) to slide; the upper cam (24) is a groove-shaped three-dimensional cam, and the high and low positions of the cam curve are used to limit the working position of the upper bow rod (252) in the working part (25); the lower cam (26) is fixed on the support seat (29), and the lower cam (26) is a three-dimensional cam, and the high and low positions of the cam curve of the lower cam are used to limit the high and low positions of the lower bow rod (258); the main shaft gear (27) is fixed on the main shaft (22) and rotates synchronously with the main shaft (22); the pinion (28) is fixed on the short shaft (2510) and meshes with the main shaft gear (27); The material transfer component (3) is arranged around the transmission assembly component (2) and fixed on the panel (18). It is used to input the battery cell mold containing the battery cell into the transmission assembly component (2) and output the mold that has completed pressing the battery cell into the zinc shell. At the same time, it inputs the zinc shell without the battery cell into the transmission assembly component (2) and outputs the zinc shell with the battery cell into the transmission assembly component (2). The upper bow rod (252) also includes an inner bearing (2521), an outer bearing (2522), a bearing housing (2523), a locking nut (2524), a bushing (2525), a bearing (2526), ​​a locking sleeve (2527), a pressure cap (2528), and a bow rod body (2529); the inner bearing (2521) and the outer bearing (2522) are fixed to the bearing housing (2523), and the outer bearing (2522) is located on the cam of the upper cam (24). The sliding in the groove ensures the axial up and down movement of the upper bow rod (252), and the inner bearing (2521) slides axially in the axial slide in the slide seat (251); one end of the bow rod body (2529) is the bow rod head of the lower pressing cell, and the other end is provided with a locking nut (2524), bushing (2525), bearing (2526), ​​and pressure cap (2528). The pressure cap (2528) and bearing seat (2523) are provided on both sides of the bearing (2526); The shaft surface of the bow rod body (2529) is provided with a helical groove whose width and depth can accommodate the end face bearing (2544), so that the end face bearing (2544) can slide in the helical groove and guide the bow rod body (2529) to spirally rise or fall according to the helical groove; the axial projection height of the helical groove on the bow rod body (2529) is not less than the difference between the high and low axial projection positions of the upper cam (24); The fixing block (254) includes a horizontal block (2541), a fixing shaft (2542), a small bushing (2543), and an end face bearing (2544). The horizontal block (2541) is fixedly connected to the upper guide seat (253); each fixing block (254) corresponds to an upper bow rod (252); the fixing shaft (2542) is fixedly connected to the horizontal block (2541); the small bushing (2543) is located on the fixing shaft (2542); the end face bearing (2544) is fixedly connected to the fixing shaft (2542), and its outer ring can rotate freely. The outer ring of the bearing can slide in the spiral groove on the bow body (2529) of the upper bow (252) to guide the bow body (2529) to rotate around the main shaft (22) while also sliding axially on the main shaft (22). The bow body (2529) itself also rotates under the guidance of the end face bearing (2544) and the spiral groove. The rotation of the bow body (2529) causes the bow head to rotate while pressing the battery cell into the zinc shell in the battery cell mold, which is used to reduce the adhesion of carbon powder in the battery cell to the bow head of the upper bow (252). The inner seat (255) is a cylindrical part located in the working part (25) and fixedly connected to the main shaft (22); the upper guide seat (253), the battery cell tray (256), the zinc shell tray (257), and the lower guide seat (259) are all fixedly connected to the inner seat (255); the inner seat (255) drives the upper guide seat (253), the battery cell tray (256), the zinc shell tray (257), and the lower guide seat (259) to rotate synchronously with the main shaft (22); The battery cell tray (256) includes an upper pressure cover (2561), a rubber pad (2562), a lower pressure cover (2563), and a material tray (2564). The material tray (2564) is a material-carrying turntable in the working part (25) containing the battery cell mold. It has several material-carrying arcs, slightly larger than the diameter of the battery cell mold, evenly arranged along its circumference. The front chamfer of the material-carrying arcs on the material tray (2564) is larger than the rear chamfer, used to guide the battery cell mold smoothly into the material-carrying arcs. The axial cross-section of the material tray (2564) is a three-layer comb tooth structure. The gap between the upper and middle comb tooth structures accommodates the height of the connecting fixing plate (37) in the material transfer assembly (3). The material-carrying arcs penetrate the upper and middle comb teeth. The cross-section of the material tray (2564)... The lower layer of the comb teeth is provided with threaded countersunk holes for installing the upper pressure cover (2561) and the lower pressure cover (2563). A rubber pad (2562) is provided between the upper pressure cover (2561) and the lower pressure cover (2563). The upper pressure cover (2561), the lower pressure cover (2563), and the rubber pad (2562) are all annular structures. The rubber pad (2562) is an elastic rubber sheet. The battery cell can be spirally pressed down by the upper bow rod (252) and enter the zinc shell through the rubber pad (2562). When the upper bow rod (252) spirals upward, the rubber pad (2562) can scrape off the carbon powder adhering to the bow rod head.

2. The automatic casing device for cylindrical battery cells according to claim 1, characterized in that: The zinc shell material tray (257) is adjacent to the battery cell material tray (256). The zinc shell material tray (257) is provided with several material-carrying arcs that are slightly larger than the outer diameter of the zinc shell on an average circumferential direction. The axial section of the zinc shell material tray (257) is a three-layer comb tooth structure. The gap between the upper comb tooth structure and the middle comb tooth structure can accommodate the height of the connecting fixing plate (37) in the material transfer assembly (3). The bow core (2585) of the lower bow rod (258) can pass through the lower layer of the comb tooth of the zinc shell material tray (257) and press against the bottom of the zinc shell to avoid the bottom of the zinc shell being squeezed and deformed when the upper bow rod (252) presses down on the battery cell.

3. The automatic casing device for cylindrical battery cells according to claim 1, characterized in that: The lower bow rod (258) includes a cam bearing (2581), a lower bow rod body (2582), a mounting cover (2583), a fixing head (2584), and a bow core (2585); the lower bow rod (258) can slide up and down in the lower guide seat (259); the cam bearing (2581) is fixed to the end of the lower bow rod (258), so that the lower bow rod (258) can rotate in a circular motion guided by the cam curve of the lower cam (26); the fixing head (2584) fixes the bow core (2585) to the lower bow rod body (2582). The mounting cover (2583) is located on the lower side of the fixed head (2584) to prevent excess carbon powder from contaminating the lower bow rod body (2582) of the lower bow rod (258) during the operation of the working part (25), thereby increasing the sliding friction gap between the lower bow rod body (2582) and the lower guide seat (259); an axial keyway is provided on the lower bow rod body (2582), which can be limited by the limiting key in the lower guide seat (259), so that the lower bow rod (258) can slide up and down within a range in the lower guide seat (259).

4. The automatic casing device for cylindrical battery cells according to any one of claims 1-3, characterized in that: The material transfer assembly (3) includes a limit bar support base (31), a limit bar (32), a mold inlet (33), a mold outlet (34), a zinc shell inlet (35), a zinc shell outlet (36), and a connecting fixing plate (37). The mold inlet (33) includes an inner vertical plate (331), an outer vertical plate (332), a horizontal plate (333), and a support column (334); the outer vertical plate (332) and the inner vertical plate (331) are fixedly connected to the horizontal plate (333) to form a channel, which is fixedly connected to the mounting plate (19) of the frame (1) through the support column (334); the structure of the mold outlet (34), the zinc shell inlet (35), and the zinc shell outlet (36) is the same as that of the mold inlet (33); the connecting fixing plate (37) is fixedly connected to the mold inlet (33) and the mold outlet (34); the connecting fixing plate (37) is fixedly connected to the zinc shell inlet (35) and the zinc shell outlet (36). The limiting strip support base (31) is formed by several horizontal and vertical plates fixed together; the limiting strip (32) is fixed on the limiting strip support base (31); the limiting strip support base (31) is fixed on the mounting plate (19) of the frame (1); the limiting strip (32) is located around the battery cell tray (256) and the zinc shell tray (257) of the transmission assembly assembly (2), respectively, to limit the battery cell mold material and zinc shell material in the battery cell tray (256) and the zinc shell tray (257) during operation to be close to the material arc and not to tip over.

5. The automatic casing device for cylindrical battery cells according to any one of claims 1-3, characterized in that: When the lower bow rod (258) is in a high position, the upper bow rod (252) presses the battery cell in the mold into the zinc shell, and the lower bow rod (258) presses against the bottom of the zinc shell at the high position of the lower cam (26) so that the bottom of the zinc shell is not deformed. During the operation of the transmission assembly assembly (2), the centers of the material-carrying arcs of the battery cell tray (256) and the zinc shell tray (257) are aligned to ensure that the upper bow rod (252) can accurately press the battery cell in the mold into the zinc shell.

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