A cylindrical battery's winding core into shell positioning device

Abstract

The utility model provides a kind of roll core into shell positioning device of cylindrical battery, including workbench and mounting bracket, moving mechanism on mounting bracket, moving mechanism includes the sliding plate of being slidably connected with mounting bracket, hydraulic oil cylinder, and first sliding block and second sliding block, first sliding block is screw-threaded connected with screw rod, one end of screw rod is rotatably connected with mounting bracket, other end is connected with the output shaft one end of motor being set on mounting bracket, limit rod is equipped on mounting bracket, limit rod is slidably connected with sliding block, the telescopic end of hydraulic oil cylinder is detachably provided with roll core mould base, roll core mould base is recessed and is provided with a plurality of first placing grooves on the side away from hydraulic oil cylinder, battery shell mould base is equipped on workbench, and the upper end side of battery shell mould base is provided with a plurality of second placing grooves corresponding with first placing groove.The roll core into shell positioning device of cylindrical battery in the utility model, by setting roll core mould base and battery shell mould base, under the impetus of hydraulic oil cylinder, accurate alignment assembly can be carried out, and the yield of battery product is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a cylindrical battery core insertion and positioning device. Background Technology

[0002] The core of a cylindrical battery refers to the core component of a lithium battery, a cylindrical body formed by winding a positive electrode, a negative electrode, and a separator. The positive and negative electrodes are coated with active materials using aluminum or copper foil, respectively, while the separator is made of an insulating porous polymer material. The core insertion and positioning device for cylindrical batteries is a key piece of equipment in the battery manufacturing process. It not only ensures assembly accuracy and improves battery yield but also prevents core damage and ensures battery safety.

[0003] In the lithium battery manufacturing process, the traditional core-in-shell process usually uses manual or semi-automatic equipment to push the core into the battery steel shell. This process suffers from unstable pushing force control: manual or semi-automatic operation makes it difficult to ensure uniform pushing force, which can easily lead to uneven stress on the core, potentially causing electrode deformation or separator damage, affecting battery safety and consistency; the insertion accuracy is low, and the traditional method lacks a precise guiding structure, resulting in a large misalignment between the core and the steel shell, which may lead to core skew, resulting in low yield and consequently low production efficiency. Utility Model Content In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cylindrical battery core insertion positioning device to solve the technical problem that the core insertion process in the prior art has low insertion accuracy, resulting in low yield and thus low production efficiency.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A cylindrical battery core insertion and positioning device includes a worktable and a mounting frame disposed on the worktable. The cylindrical battery core insertion and positioning device further includes a moving mechanism disposed on the mounting frame. The moving mechanism includes a slide plate slidably connected to the mounting frame. A hydraulic cylinder is disposed through the slide plate. A first slider and a second slider are provided on the side of the slide plate away from the hydraulic cylinder. A screw is threadedly connected to the first slider. One end of the screw is rotatably connected to the mounting frame, and the other end is connected to one end of the output shaft of a motor disposed on the mounting frame. A limiting rod is provided on the mounting frame. The limiting rod is slidably connected to the slider. A core mold base is detachably disposed at the telescopic end of the hydraulic cylinder. A plurality of first placement grooves are recessed on the side of the core mold base away from the hydraulic cylinder. A groove is opened on the upper surface of the worktable. A battery casing mold base is disposed in the groove. A plurality of second placement grooves corresponding to the first placement grooves are provided on one side of the upper end of the battery casing mold base.

[0005] According to one aspect of the above technical solution, a quick-release mechanism is provided between the hydraulic cylinder and the core mold base. The quick-release mechanism includes a connecting sleeve with one end fixedly connected to the hydraulic cylinder, mounting blocks connected to both sides of the connecting sleeve, a connecting rod with one end fixedly connected to the core mold base, and an elastic component for connecting the connecting sleeve and the connecting rod.

[0006] According to one aspect of the above technical solution, the elastic component includes a spring, a push rod, and a locking block. The mounting block has a locking groove on its side, and the locking block is inserted into the mounting block's locking groove and slidably connected to the mounting block. One end of the spring is connected to the inner side wall of the mounting block, and the other end is connected to the side of the locking block. The upper end face of the locking block is provided with a push rod. The connecting rod and the side wall of the connecting sleeve are both provided with slots corresponding to the locking block. The locking block passes through the connecting sleeve and is inserted into the slot of the connecting rod to achieve a fixed connection between the two.

[0007] According to one aspect of the above technical solution, baffles are provided on both sides of the core mold base.

[0008] According to one aspect of the above technical solution, the battery module base is provided with a handle on its side.

[0009] According to one aspect of the above technical solution, a magnetic plate is provided inside the battery casing mold base.

[0010] According to one aspect of the above technical solution, the upper surface of the workbench is provided with two sets of limiting posts, which cooperate with the baffle to limit the downward movement of the core mold base.

[0011] According to one aspect of the above technical solution, the upper end face of the mounting bracket is provided with two sets of sliding grooves, and the first slider and the second slider slide along the screw through the sliding grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves precise alignment between the core and the battery casing through a screw-limit rod dual-rail guiding system. The hydraulic cylinder extension end extends downward with controllable pressure, and the connecting sleeve drives the connecting rod and the core mold base to move vertically downward and precisely align with the battery casing mold base. This precision guiding mechanism fundamentally solves the problems of electrode damage and separator wrinkles caused by skew, and greatly improves the safety and consistency of the battery.

[0013] 2. This utility model is equipped with a quick-release mechanism, which allows for mold base separation simply by pressing the push rod. Combined with a standardized interface design, operators can switch between different module specifications without tools. This modular design overcomes the drawback of traditional production lines requiring downtime for model changes, enabling a single production line to flexibly adapt to the production needs of multiple battery models.

[0014] 3. This utility model is equipped with a baffle and a limiting post, which together restrict the lateral movement of the core mold base and limit the distance between the core mold base and the battery shell mold base, reducing alignment deviation, improving alignment accuracy, eliminating positional deviation in traditional assembly, and ensuring that the core is inserted into the shell in a perfectly vertical posture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the core insertion positioning device for a cylindrical battery in one embodiment of the present invention; Figure 2 This is a schematic diagram of the mounting frame structure of the core insertion positioning device for a cylindrical battery in one embodiment of the present invention; Figure 3 This is a schematic diagram of the moving mechanism of the cylindrical battery core insertion and positioning device in one embodiment of the present invention. Figure 4 This is a schematic diagram of the quick-release mechanism of the cylindrical battery core insertion positioning device in one embodiment of the present invention. Figure 5 This is a cross-sectional view of the quick-release mechanism of the cylindrical battery core insertion positioning device in one embodiment of the present invention. Figure 6 This is a schematic diagram of the battery case mold base structure of the core insertion positioning device for a cylindrical battery in one embodiment of the present invention; Key component symbols: 1-Workbench; 2-Mounting bracket; 3-Hydraulic cylinder; 4-Motor; 5-Slide plate; 6-First slider; 7-Second slider; 8-Screw; 9-Limit rod; 10-Connecting sleeve; 11-Connecting rod; 12-Mounting block; 13-Spring; 14-Push rod; 15-Clamping block; 16-Core mold base; 17-Baffle; 18-First placement slot; 19-Battery casing mold base; 20-Second placement slot; 21-Handle; 22-Magnetic plate; 23-Limiting post; 24-Slide groove; The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0017] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] See Figures 1 to 6 A cylindrical battery core insertion and positioning device includes a worktable 1, a mounting frame 2, a moving mechanism, and a quick-release mechanism. The mounting frame 2 is connected to the upper surface of the worktable 1. The moving mechanism includes a hydraulic cylinder 3, a motor 4, a sliding plate 5, a first slider 6, a second slider 7, a screw 8, and a limiting rod 9. The upper surface of the mounting frame 2 is provided with the sliding plate 5, and the upper surface of the sliding plate 5 is provided with the hydraulic cylinder 3. The lower surface of the sliding plate 5 is connected with the slider. The screw 8 and the limiting rod 9 are provided between the two sides of the mounting frame 2. The motor 4 is... On the side wall of the mounting bracket 2, the output shaft of the motor 4 is connected to the screw 8. The first slider 6 is sleeved on the surface of the screw 8 and threadedly connected to the screw 8. The second slider 7 is sleeved on the surface of the limiting rod 9 and slidably connected to the limiting rod 9. The quick-release mechanism includes a connecting sleeve 10, a connecting rod 11, a mounting block 12, and an elastic component. The upper end face of the connecting sleeve 10 is connected to the telescopic end of the hydraulic cylinder 3. Mounting blocks 12 are connected to both sides of the connecting sleeve 10. The connecting sleeve 10 and the connecting rod 11 are connected by the elastic component.

[0020] In a further embodiment, the elastic component includes a spring 13, a push rod 14, and a locking block 15. The mounting block 12 has a slot on its side, and the locking block 15 is inserted into the slot of the mounting block 12 and slidably connected to the mounting block 12. One end of the spring 13 is connected to the inner side wall of the mounting block 12, and the other end is connected to the side of the locking block 15. The upper surface of the locking block 15 is provided with a push rod 14. The side walls of the connecting rod 11 and the connecting sleeve 10 are both provided with slots corresponding to the locking block 15. The locking block 15 passes through the connecting sleeve 10 and is inserted into the slot of the connecting rod 11 to achieve a fixed connection between the two.

[0021] The locking block 15 extends outward under the elastic force of the spring 13 and embeds into the corresponding slots on the side walls of the connecting sleeve 10 and the connecting rod 11, achieving a rigid connection between the two. When disassembly is required, pressing the push rod 14 pushes the locking block 15 inward to compress the spring 13, causing the locking block 15 to exit the slot of the connecting rod 11, thus separating the connecting rod 11 from the connecting sleeve 10. The modular design allows for quick disassembly and replacement of different specifications of core mold bases 16 without tools, improving production efficiency.

[0022] In a further embodiment, the lower end face of the connecting rod 11 is connected to a core mold base 16, the core mold base 16 has baffles 17 on both sides, and the lower end face of the core mold base 16 has a plurality of first placement slots 18; the upper end face of the workbench 1 has a groove, and a battery case mold base 19 is placed in the groove; the upper end face of the battery case mold base 19 has a plurality of second placement slots 20, and a handle 21 is provided on the side of the battery mold base. A magnet plate 22 is provided inside the battery case mold base 19; the upper end face of the workbench 1 has two sets of limiting posts 23, and the limiting posts 23 correspond to the baffles 17.

[0023] The first placement groove 18 on the lower end face of the core mold base 16 is used to accommodate the core, ensuring that the core is vertically aligned. The second placement groove 20 of the battery case mold base 19 is used to place the battery steel case. The magnetic plate 22 magnetically attracts the steel case, preventing it from moving during insertion. The baffles 17 are located on both sides of the core mold base 16 and cooperate with the limiting posts 23 on the worktable 1 to limit the horizontal displacement of the core mold base 16 and the distance between the core mold base 16 and the battery case mold base 19. When the core mold base 16 is pressed down, the core is accurately inserted into the steel case, and the magnetic attraction ensures that the steel case does not shift.

[0024] In a further embodiment, the upper surface of the mounting bracket 2 is provided with two sets of sliding grooves 24, through which the first slider 6 and the second slider 7 slide with the screw 8. The sliding grooves 24 guide the first slider 6 and the second slider 7 to move along a set trajectory, improving operational stability.

[0025] In summary, when using the overall equipment: In this utility model, the operator places the battery core to be assembled into the first placement groove 18 of the core mold base 16, and places the battery steel shell into the second placement groove 20 of the battery shell mold base 19. The magnetic plate 22 automatically adsorbs and fixes the battery steel shell to prevent displacement.

[0026] Start motor 4 to drive screw 8 to rotate clockwise. First slider 6 moves along screw 8 through threaded engagement, and second slider 7 slides synchronously along limit rod 9 to maintain motion stability. Slide plate 5 is guided by slide groove 24 to drive the entire pressing mechanism to move horizontally. After moving to the preset station, motor 4 stops.

[0027] Hydraulic cylinder 3 starts the pressing program, and the telescopic end extends downward with controllable pressure. Connecting sleeve 10 drives connecting rod 11 and core mold seat 16 to move vertically downward. Baffle 17 begins to contact limit post 23 to form hard limit guide. The first placement groove 18 of core mold seat 16 and the second placement groove 20 of battery shell mold seat 19 are automatically aligned. After the core is fully inserted into the steel shell, the pressure is maintained for 0.5 seconds to ensure that it is in place.

[0028] The hydraulic cylinder 3 retracts its telescopic end, causing the core mold base 16 to rise. The baffle 17 disengages from the limit post 23 and returns to its initial height. The motor 4 rotates counterclockwise, causing the first slider 6 to return to its starting position. The operator then removes the completed battery casing mold base 19 using the handle 21.

[0029] If a change of type is required, press the push rod 14 to push the locking block 15 inward to compress the spring 13, so that the locking block 15 exits the slot of the connecting rod 11, thus separating the connecting rod 11 from the connecting sleeve 10. When reinstalling, simply reverse the operation. The modular design allows for quick disassembly and replacement of different specifications of core mold base 16 without tools, improving production efficiency.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A core insertion and positioning device for a cylindrical battery, comprising a worktable and a mounting bracket disposed on the worktable, characterized in that, The cylindrical battery core insertion positioning device further includes a moving mechanism mounted on the mounting frame. The moving mechanism includes a sliding plate slidably connected to the mounting frame, a hydraulic cylinder passing through the sliding plate, a first slider and a second slider on the side of the sliding plate away from the hydraulic cylinder, the first slider being threadedly connected to a screw, one end of the screw being rotatably connected to the mounting frame, and the other end being connected to one end of the output shaft of a motor mounted on the mounting frame, the mounting frame being provided with a limiting rod, the limiting rod being slidably connected to the slider, a core mold base being detachably mounted on the telescopic end of the hydraulic cylinder, a plurality of first placement grooves being recessed on the side of the core mold base away from the hydraulic cylinder, a groove being opened on the upper surface of the worktable, a battery casing mold base being provided in the groove, and a plurality of second placement grooves corresponding to the first placement grooves being provided on one side of the upper end of the battery casing mold base.

2. The cylindrical battery core insertion and positioning device according to claim 1, characterized in that, A quick-release mechanism is provided between the hydraulic cylinder and the core mold base. The quick-release mechanism includes a connecting sleeve with one end fixedly connected to the hydraulic cylinder, mounting blocks connected to both sides of the connecting sleeve, a connecting rod with one end fixedly connected to the core mold base, and an elastic component for connecting the connecting sleeve and the connecting rod.

3. The cylindrical battery core insertion and positioning device according to claim 2, characterized in that, The elastic component includes a spring, a push rod, and a locking block. The mounting block has a slot on its side, and the locking block is inserted into the slot of the mounting block and slidably connected to the mounting block. One end of the spring is connected to the inner side wall of the mounting block, and the other end is connected to the side of the locking block. The upper end face of the locking block has a push rod. The connecting rod and the side wall of the connecting sleeve both have slots corresponding to the locking block. The locking block passes through the connecting sleeve and is inserted into the slot of the connecting rod to achieve a fixed connection between the two.

4. The cylindrical battery core insertion and positioning device according to claim 1, characterized in that, The core die holder is provided with baffles on both sides.

5. The cylindrical battery core insertion and positioning device according to claim 1, characterized in that, The battery module is equipped with a handle on its side.

6. The cylindrical battery core insertion and positioning device according to claim 5, characterized in that, The battery casing mold base is equipped with a magnetic plate.

7. The cylindrical battery core insertion and positioning device according to claim 3, characterized in that, The upper surface of the workbench is provided with two sets of limiting posts, which cooperate with the baffle to limit the downward movement of the core mold base.

8. The cylindrical battery core insertion positioning device according to claim 1, characterized in that, The upper surface of the mounting bracket is provided with two sets of sliding grooves, through which the first slider and the second slider slide with the screw.

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