A battery foil coating apparatus for lithium batteries

Abstract

The present application relates to the technical field of lithium battery manufacturing, and discloses a battery foil coating equipment for lithium battery, which comprises a base, a storage top support is fixedly connected to the top of the base, a center supporting plate is fixedly connected to the inside of the storage top support, the top of the center supporting plate is flush with the top of the storage top support, and a pressing positioning module is fixedly connected to the top of the base, the battery foil substrate is supported by the storage top support and the center supporting plate fixed in the inside of the storage top support, the pressing frame presses the battery foil substrate from above, and the top end of the supporting frame tightly presses the battery foil substrate from below, so that the battery foil substrate is clamped and positioned at a specified position on the top of the center supporting plate, the working cavity is used for placing slurry, the outer connecting rod is pulled upward by an operator to move the supporting frame upward and press the battery foil substrate, the edge mark of the battery foil substrate in the area to be cut off appears, and the coating range of the battery foil substrate is limited and the edge of the area to be cut off is positioned.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, specifically to a battery foil coating device for lithium batteries. Background Technology

[0002] The coating of lithium battery electrodes is a crucial step in the lithium battery production process. A uniformly stirred slurry is applied to the battery foil substrate, and the organic solvent in the slurry is dried. To ensure the safe use of lithium batteries, performance testing is conducted. This performance testing involves individually assembled lithium batteries. Operators perform individual assembly and testing of these batteries in the testing area. The coating of the battery foil substrate uses a substrate of a specified size. Operators manually apply the coating to the lithium battery foil substrate on a workbench in the testing area. During the process, the operator presses the battery foil substrate to make it flat against the workbench surface, and then moves the coating applicator across the surface to evenly coat the slurry. However, the lack of convenient and effective positioning, leveling, surface cleaning, and air bubble removal on the battery foil substrate leads to defects in the coated product. Furthermore, the inability to limit the coating area and locate the edges of the cut-off areas after coating affects the coating effect and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a battery foil coating apparatus for lithium batteries to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A battery foil coating device for lithium batteries includes a base, a top support fixedly connected to the top of the base, a central support plate fixedly connected inside the top support, the top of the central support plate being flush with the top of the top support, a pressing and positioning module fixedly connected to the top of the base, the pressing and positioning module including two lifting adjustment columns, two combined horizontal plates, a pressure frame and a barrier adhesive frame, the pressure frame being fixedly connected between the two combined horizontal plates, the lifting adjustment columns driving the pressure frame to descend to the top of the top support to press the battery foil substrate onto the top of the central support plate, and a top support module engagingly connected inside the base, the top support module including a support frame, four base blocks and two external connecting rods, the external connecting rods engagingly connected inside the top support. Between the side wall and the outer edge of the central support plate, the top of the outer connecting rod is flush with the top of the central support plate, and the top end of the outer connecting rod presses against the bottom of the battery foil substrate; the top of the base is fixedly connected to an air bubble removal module located at the tail end of the top support, the air bubble removal module includes an exhaust component and an exhaust head, the air inlet end of the exhaust head is close to the tail end of the central support plate to realize the discharge of air bubbles between the battery foil substrate and the central support plate, the pressure frame has a working chamber, the working chamber is slidably connected to a dust-adhesive leveling block, the top support is slidably connected to a slurry coating module, the slurry coating module includes a coating roller, two combination blocks and two adjusting seats, the coating roller moves inside the working chamber to realize the coating of the battery foil substrate.

[0006] Furthermore: the two lifting adjustment columns are symmetrically fixedly connected to the top of the base, the two combined horizontal plates are respectively fixedly connected to the output ends of the two lifting adjustment columns, the pressure frame is located above the top support of the item, and the end of the combined horizontal plate away from the output end of the lifting adjustment column is fixedly connected to the corresponding side of the pressure frame.

[0007] Furthermore: the barrier frame is fixedly connected to the inner side wall of the pressure frame, and the top of the pressure frame is provided with a guide surface, which is close to the head end of the pressure frame.

[0008] Furthermore: the four base blocks are symmetrically fixedly connected to the bottom of the support frame in pairs, the bottom of the base is provided with a connecting groove, the base blocks are slidably connected inside the connecting groove, and the two external connecting rods are respectively fixedly connected to the top of the corresponding two base blocks.

[0009] Furthermore: the inner side of the barrier frame is flush with the inner side of the pressure frame, and the inner wall of the support frame is flush with the inner side of the barrier frame.

[0010] Furthermore: the exhaust component is fixedly connected to the top of the base, the exhaust head is fixedly connected to the input end of the exhaust component, and the exhaust head is engaged between the tail end of the central support plate and the corresponding inner side wall of the top support.

[0011] Furthermore: the side of the ash-adhesive leveling block is fixedly connected to two symmetrically distributed side moving seats, the top of the pressure frame is provided with two guide grooves, the two side moving seats are slidably connected inside the two guide grooves respectively, and the top of the ash-adhesive leveling block is fixedly connected to a force-applying block.

[0012] Furthermore: the adjusting seat is slidably connected to the side of the top support of the item, the two adjusting seats are symmetrically distributed, the two combined blocks are respectively inserted into the top of the two adjusting seats, and the coating roller is rotatably connected between the two combined blocks.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention supports the battery foil substrate by setting a top support and a central support plate fixed inside the top support. The lifting adjustment column at the top of the base drives the pressure frame to descend to the top of the top support, pressing the battery foil substrate from above. The top of the support frame, which is clamped between the inner side wall of the top support and the outer side of the central support plate, presses the battery foil substrate from below, achieving the effect of clamping and positioning the battery foil substrate at a designated position on the top of the central support plate. The working cavity inside the pressure frame is used to put in the slurry, which can limit the coating range of the battery foil substrate. When the operator pulls up the outer connecting rod, the support frame moves up and can push the battery foil substrate, making the edge imprint of the area to be cut on the battery foil substrate. This achieves the effect of limiting the coating range of the battery foil substrate and positioning the edge of the area to be cut.

[0015] 2. This invention utilizes a slidingly connected dust-adhesive leveling block within the working chamber to press and move the upper surface of the battery foil substrate. The leveling block sweeps across the upper surface of the battery foil substrate, leveling dust particles and simultaneously pressing the substrate firmly against the top of the central support plate. This cleaning and leveling process is achieved. An air bubble removal module at the top of the base, located at the tail end of the central support plate, works in conjunction with the leveling block to remove air bubbles from beneath the battery foil substrate. The coating roller moves within the working chamber to coat the battery foil base layer. The operation is simple, allowing operators to conveniently and effectively position, level, clean, and remove air bubbles from the battery foil substrate, thus improving the coating effect and efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments, the accompanying drawings will be briefly described below.

[0017] Figure 1 This is a schematic diagram of a battery foil coating device for lithium batteries.

[0018] Figure 2 for Figure 1 A structural diagram from another perspective;

[0019] Figure 3 This is a top view schematic diagram of a battery foil coating equipment for lithium batteries;

[0020] Figure 4 This is a schematic cross-sectional view of a battery foil coating device for lithium batteries.

[0021] Figure 5 for Figure 1 A schematic diagram of the cross-sectional structure;

[0022] In the diagram: 1. Base; 11. Top support; 12. Center support plate; 13. Connecting groove; 2. Pressing and positioning module; 21. Lifting and adjusting column; 22. Combined horizontal plate; 23. Pressure frame; 231. Working chamber; 232. Guide surface; 233. Guide groove; 24. Barrier frame; 3. Top support module; 31. Support frame; 32. Bottom block; 33. External connecting rod; 4. Air bubble removal module; 41. Exhaust device; 42. Exhaust head; 5. Adhesive leveling block; 51. Side moving seat; 52. Force application block; 6. Slurry coating module; 61. Coating roller; 62. Combined block; 63. Adjusting seat. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Specific mechanical structures of the present invention will be described in conjunction with the following references. Figures 1 to 5 The detailed description of the structure will be clearly presented. All structural contents mentioned in the following embodiments are based on the accompanying drawings.

[0024] Please see Figures 1-5In this embodiment of the invention, a battery foil coating device for lithium batteries includes a base 1. A top support 11 is fixedly connected to the top of the base 1. A central support plate 12 is fixedly connected inside the top support 11. The top of the central support plate 12 is flush with the top of the top support 11. A pressing and positioning module 2 is fixedly connected to the top of the base 1. The pressing and positioning module 2 includes two lifting adjustment columns 21, two combined horizontal plates 22, a pressure frame 23, and a barrier adhesive frame 24. The pressure frame 23 is fixedly connected between the two combined horizontal plates 22. The lifting adjustment columns 21 drive the pressure frame 23 to descend to the top of the top support 11 to press the battery foil substrate onto the top of the central support plate 12. A top support module 3 is engaged inside the base 1. The top support module 3 includes a support frame 31, four bottom blocks 32, and two external connecting rods 33. The external connecting rods 33 are engaged with the top support of the top support 11. Between the inner sidewall of the top support 11 and the outer side of the center support plate 12, the top of the outer connecting rod 33 is flush with the top of the center support plate 12, and the top of the outer connecting rod 33 presses against the bottom of the battery foil substrate. The top of the base 1 is fixedly connected to a bubble removal module 4 located at the tail end of the top support 11. The bubble removal module 4 includes an exhaust component 41 and an exhaust head 42. The air inlet end of the exhaust head 42 is close to the tail end of the center support plate 12 to remove bubbles between the battery foil substrate and the center support plate 12. The pressure frame 23 has a working chamber 231 inside. The working chamber 231 is slidably connected to a dust-adhesive leveling block 5. The top support 11 is slidably connected to a slurry coating module 6. The slurry coating module 6 includes a coating roller 61, two combination blocks 62 and two adjusting seats 63. The coating roller 61 moves inside the working chamber 231 to achieve coating of the battery foil substrate.

[0025] The base 1 is used to connect other parts of the equipment. The base 1 can be fixed on the operator's workbench, so that the equipment can be stably operated on the workbench. The top support 11 is fixedly connected to the top of the base 1. Inside the top support 11, a central support plate 12 with its top flush with the top of the top support 11 is fixedly connected. The top support 11 and the central support plate 12 work together to place the battery foil substrate to be coated. The battery foil substrate is placed flat on the top of the top support 11 and the central support plate 12, and the bottom of the battery foil substrate is close to the top of the top support 11 and the central support plate 12, which facilitates the placement of the battery foil substrate on the central support plate 12. Most of the battery foil substrate is located on the top of the central support plate 12, and the remaining edge area of ​​the battery foil substrate is located above the open space formed between the inner side wall of the top support 11 and the outer side of the central support plate 12, so that the top support module 3 can smoothly support the battery foil substrate from below.

[0026] The clamping and positioning module 2 is connected to the top of the base 1. The clamping and positioning module 2 is used to clamp the battery foil substrate from above. The clamping and positioning module 2 consists of two lifting adjustment columns 21, two combined horizontal plates 22, a pressure frame 23, and a barrier frame 24. The two combined horizontal plates 22 are fixedly connected to the output ends of the two lifting adjustment columns 21, respectively. The pressure frame 23, located above the top support 11, is fixedly connected between the two combined horizontal plates 22. The ends of the combined horizontal plates 22 furthest from the output ends of the lifting adjustment columns 21 are aligned with the pressure frame 23. The barrier frame 24 is fixedly connected to the inner wall of the pressure frame 23, achieving a stable connection between the two lifting adjustment columns 21, the two combined horizontal plates 22, the pressure frame 23, and the barrier frame 24. The two lifting adjustment columns 21 are symmetrically fixedly connected to the top of the base 1, achieving a stable connection between the combined pressing and positioning module 2 and the base 1. This allows the pressure frame 23 and the barrier frame 24 to be stably positioned above the top support 11, facilitating the pressing of the battery foil substrate. Simultaneous operation of the two lifting adjustment columns 21 allows the two combined horizontal plates 22 to simultaneously lift and lower above the base 1. The pressure frame 23, which internally fixes the barrier frame 24, is connected between the two combined horizontal plates 22, enabling the pressure frame 23 and the barrier frame 24 to lift and lower above the base 1. This simple operation facilitates the lifting and lowering of the pressure frame 23 and the barrier frame 24 above the base 1. The battery foil substrate is placed on top of the central support plate 12. The lifting adjustment column 21 operates to lower the pressure frame 23 towards the top of the storage top support 11. The pressure frame 23 is lowered to the top of the storage top support 11, and the bottom of the pressure frame 23 and the barrier frame 24 press the battery foil substrate from the top of the battery foil substrate, thus achieving the effect of pressing and positioning the battery foil substrate on the top of the central support plate 12.

[0027] The top support module 3 is connected to the inside of the base 1 by a snap-fit ​​mechanism. The top support module 3 consists of a support frame 31, four bottom blocks 32, and two external connecting rods 33. The external connecting rods 33 are snap-fitted into the open space between the inner side wall of the top support 11 and the outer side of the central support plate 12. The four bottom blocks 32 are symmetrically fixed to the bottom of the support frame 31 in pairs. The bottom of the base 1 has a connecting groove 13, and the bottom blocks 32 are slidably connected inside the connecting groove 13. The two external connecting rods 33 are respectively fixedly connected to the top of the corresponding two bottom blocks 32. The top support module 3 and the base 1 are connected by a snap-fit ​​mechanism. The top of the outer connecting rod 33 is flush with the top of the central support plate 12. The inner side of the barrier frame 24 is flush with the inner side of the pressure frame 23. The inner side wall of the support frame 31 is flush with the inner side of the barrier frame 24. This allows the outer connecting rod 33 to snap tightly into the open space. At the same time, the top of the outer connecting rod 33 can press against the bottom of the battery foil substrate. The outer connecting rod 33 can fill the open space and support the remaining edge area of ​​the battery foil substrate. The top support 11 and the central support plate 12 support the battery foil substrate. The lifting adjustment column 21 drives the pressure frame 23 to descend to the top of the top support 11, pressing the battery foil substrate from above. The top of the support frame 31 presses the battery foil substrate from below, achieving the effect of clamping and positioning the battery foil substrate at a designated position on the top of the central support plate 12. The pressure frame 23 has a working cavity 231 inside, which is used to hold the slurry. The barrier frame 24 can prevent the slurry from leaving the working cavity 231, thus limiting the coating range of the battery foil substrate. When the operator pulls up the outer connecting rod 33, the support frame 31 can move upward in the open space. The upward-moving support frame 31 can press up the battery foil substrate, creating an edge imprint of the area to be cut on the battery foil substrate, thus limiting the coating range of the battery foil substrate and positioning the edge of the area to be cut.

[0028] Inside the working chamber 231, a dust-adhesive leveling block 5 is slidably connected. Two symmetrically distributed side-moving seats 51 are fixedly connected to the side of the dust-adhesive leveling block 5. Two guide grooves 233 are opened on the top of the pressure frame 23, and the two side-moving seats 51 are slidably connected inside the two guide grooves 233, realizing the sliding connection between the dust-adhesive leveling block 5 and the pressure frame 23. This allows the dust-adhesive leveling block 5 to smoothly change position within the working chamber 231. A force-applying block 52 is fixedly connected to the top of the dust-adhesive leveling block 5, allowing the operator to change its position within the working chamber 231 by operating the force-applying block 52. The dust-adhesive leveling block 5, moving within the working chamber 231, presses against the upper surface of the battery foil substrate. As the dust-adhesive leveling block 5 sweeps across the upper surface of the battery foil substrate, it smooths out dust particles and simultaneously presses the battery foil substrate firmly against the top of the central support plate 12, achieving the effect of cleaning and leveling the battery foil substrate. A bubble removal module 4 is fixedly connected to the top of the base 1. The bubble removal module 4 is located at the tail end of the top support 11. The bubble removal module 4 consists of an exhaust component 41 and an exhaust head 42. The exhaust component 41 is fixedly connected to the top of the base 1, and the exhaust head 42 is fixedly connected to the input end of the exhaust component 41. A receiving cavity is formed between the tail end of the central support plate 12 and the corresponding inner side wall of the top support 11. The exhaust head 42 is connected to the inside of the receiving cavity by a snap-fit ​​method, realizing a stable connection and combination between the bubble removal module 4 and the base 1. The air inlet end of the exhaust head 42 is close to the tail end of the central support plate 12. The operation of the exhaust component 41 can realize the outward discharge of bubbles between the battery foil substrate and the central support plate 12, achieving the effect of allowing operators to conveniently and effectively position and level the battery foil substrate to be coated, clean the surface, and discharge the bubbles below.

[0029] A slurry coating module 6 is installed above the top support 11. The slurry coating module 6 is slidably connected to the top support 11. The slurry coating module 6 consists of a coating roller 61, two assembly blocks 62, and two adjusting seats 63. The adjusting seats 63 are slidably connected to the side of the top support 11. The two adjusting seats 63 are symmetrically distributed. The vertical rods at the bottom of the two assembly blocks 62 are respectively inserted into the slots at the top of the two adjusting seats 63, realizing a stable connection between the assembly blocks 62 and the adjusting seats 63. The assembly blocks 62 can be vertically adjusted above the adjusting seats 63. The coating roller 61 is rotatably connected between two assembly blocks 62, enabling the coating roller 61 to be raised and lowered above the top support 11. The coating roller 61 and the two assembly blocks 62 can move vertically upward above the top support 11, increasing the distance between the coating roller 61 and the pressure frame 23, ensuring that the pressure frame 23 can be raised and lowered smoothly above the top support 11. The operator moves the coating roller 61 inside the working chamber 231 to complete the coating of the slurry on the battery foil substrate. The operation is simple and can improve the coating effect and efficiency of the battery foil substrate.

[0030] The top of the pressure frame 23 is provided with a guide surface 232. The guide surface 232 is close to the head end of the pressure frame 23. The guide surface 232 allows the coating roller 61 to smoothly enter the designated position inside the working chamber 231, so that the coating roller 61 can smoothly perform the coating operation from the front end of the slurry onto the battery foil substrate.

[0031] The working principle of this invention is as follows: The battery foil substrate is placed flat on top of the top support 11 and the central support plate 12. The lifting adjustment column 21 drives the pressure frame 23 to descend to the top of the top support 11. The pressure frame 23 and the barrier frame 24 press the battery foil substrate from above, and the top of the support frame 31 presses the battery foil substrate from below, positioning the battery foil substrate at a designated position on the top of the central support plate 12. The operator operates the force application block 52 to move the dust-adhesive leveling block 5 inside the working chamber 231, pressing against the upper surface of the battery foil substrate. The dust-adhesive leveling block 5 sweeps across the upper surface of the battery foil substrate, leveling the dust particles on the upper surface of the battery foil substrate, while simultaneously pressing the battery foil substrate to allow the battery foil to... The substrate is attached tightly to the top of the central support plate 12. The venting device 41 works by using the venting head 42 in conjunction with the dust leveling block 5 to remove air bubbles between the battery foil substrate and the central support plate 12. The slurry is placed inside the working chamber 231. The barrier frame 24 blocks the slurry to prevent it from detaching. The operator operates the coating roller 61 to move inside the working chamber 231 to coat the battery foil substrate with the slurry. After the coating is completed, the operator pulls the outer connecting rod 33 to move the support frame 31 upward. The upward-moving support frame 31 pushes against the battery foil substrate, so that the edge imprint of the area to be cut appears on the battery foil substrate, and the edge positioning of the area to be cut after coating the battery foil substrate is performed.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A battery foil coating apparatus for lithium batteries, comprising a base (1), wherein a top support (11) is fixedly connected to the top of the base (1), characterized in that, The top support (11) is fixedly connected to a central support plate (12), the top of the central support plate (12) is flush with the top of the top support (11), and the top of the base (1) is fixedly connected to a pressing and positioning module (2). The pressing and positioning module (2) includes two lifting adjustment columns (21), two combined horizontal plates (22), a pressure frame (23), and a barrier frame (24). The pressure frame (23) is fixedly connected between the two combined horizontal plates (22), and the lifting adjustment columns (21) drive the pressure frame (23) to descend to the top of the top support (11). The top of the top support (11) presses the battery foil substrate onto the top of the central support plate (12). The base (1) is internally connected to a top support module (3). The top support module (3) includes a support frame (31), four bottom blocks (32) and two external connecting rods (33). The support frame (31) is connected between the inner side wall of the top support (11) and the outer side of the central support plate (12). The top of the support frame (31) is flush with the top of the central support plate (12). The top of the support frame (31) presses against the bottom of the battery foil substrate. The four base blocks (32) are symmetrically fixedly connected to the bottom of the support frame (31) in pairs. The bottom of the base (1) is provided with a connecting groove (13). The base blocks (32) are slidably connected inside the connecting groove (13). The two external connecting rods (33) are respectively fixedly connected to the top of the corresponding two base blocks (32). The inner side of the barrier frame (24) is flush with the inner side of the pressure frame (23), and the inner side wall of the support frame (31) is flush with the inner side of the barrier frame (24).

2. The battery foil coating equipment for lithium batteries according to claim 1, characterized in that, The base (1) is fixedly connected to the top of the bubble removal module (4) located at the tail end of the top support (11). The bubble removal module (4) includes an exhaust component (41) and an exhaust head (42). The air inlet end of the exhaust head (42) is close to the tail end of the center support plate (12) to realize the discharge of bubbles between the battery foil substrate and the center support plate (12). The pressure frame (23) has a working chamber (231) inside. The working chamber (231) is slidably connected to a dust-adhesive leveling block (5). The top support (11) is slidably connected to a slurry coating module (6). The slurry coating module (6) includes a coating roller (61), two combination blocks (62) and two adjustment seats (63). The coating roller (61) moves inside the working chamber (231) to realize the coating of the battery foil substrate.

3. The battery foil coating equipment for lithium batteries according to claim 1, characterized in that, Two lifting adjustment columns (21) are symmetrically fixedly connected to the top of the base (1), and two combined horizontal plates (22) are fixedly connected to the output ends of the two lifting adjustment columns (21) respectively. The pressure frame (23) is located above the top support (11), and the end of the combined horizontal plate (22) away from the output end of the lifting adjustment column (21) is fixedly connected to the corresponding side of the pressure frame (23).

4. The battery foil coating equipment for lithium batteries according to claim 1, characterized in that, The barrier frame (24) is fixedly connected to the inner wall of the pressure frame (23). The top of the pressure frame (23) is provided with a guide surface (232), which is close to the head end of the pressure frame (23).

5. A battery foil coating apparatus for lithium batteries according to claim 2, characterized in that, The exhaust component (41) is fixedly connected to the top of the base (1), the exhaust head (42) is fixedly connected to the input end of the exhaust component (41), and the exhaust head (42) is engaged between the tail end of the central support plate (12) and the corresponding inner side wall of the top support (11).

6. A battery foil coating apparatus for lithium batteries according to claim 2, characterized in that, The mortar leveling block (5) has two symmetrically distributed side moving seats (51) fixedly connected to its side. The top of the pressure frame (23) has two guide grooves (233). The two side moving seats (51) are slidably connected inside the two guide grooves (233). The top of the mortar leveling block (5) has a force-applying block (52) fixedly connected to its top.

7. A battery foil coating apparatus for lithium batteries according to claim 2, characterized in that, The adjusting seat (63) is slidably connected to the side of the top support (11). The two adjusting seats (63) are symmetrically distributed. The two combination blocks (62) are respectively inserted into the top of the two adjusting seats (63). The coating roller (61) is rotatably connected between the two combination blocks (62).

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