Device for improving baking effect of coated pole piece

Abstract

The utility model discloses a device for improving the baking effect of a coated pole piece, relates to the technical field of coating devices, and solves the problems that the surface A of the pole piece coated by a lithium battery is debugged to be in a baking state through a first-layer baking oven, and the surface A coating is dried and cracked and the product quality is influenced when the surface B enters a second-layer baking oven for secondary baking along with the surface B coating. The drying device is arranged between the first-layer oven and the second-layer oven, the lower side face of the pole piece coated with the lithium battery is dried through the first-layer oven, and the upper side face of the pole piece coated with the lithium battery is dried through the second-layer oven; comprising a spraying device located below the pole piece, the spraying device comprises a spraying passing roller and a spraying assembly spraying towards the spraying passing roller, and lifting assemblies are arranged at the two ends of the spraying passing roller and drive the spraying passing roller to ascend to abut against the position below the pole piece. When the pole piece is sprayed from the A surface to the B surface, the spraying device is lifted for spraying, the spraying roller adsorbs a solution to be in contact with the A surface of the pole piece, so that the pole piece is kept wet and enters a two-layer drying oven for secondary baking without cracking, and the effect of improving the product quality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating devices, in particular to a device for improving the baking effect of coated pole pieces. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Lithium batteries were first used in cardiac pacemakers. The advantages of lithium batteries such as extremely low self-discharge rate and gentle discharge voltage enable pacemakers implanted in the human body to operate for a long time without recharging. With the development of science and technology, lithium batteries have now become mainstream. Coating is one of the most important process flows of lithium-ion batteries. The positive electrode slurry or negative electrode slurry required for the manufacture of lithium-ion batteries is evenly applied to the substrate. Currently, the positive electrode substrate is aluminum foil and the negative electrode substrate is copper foil.

[0003] However, some lithium battery electrode coating machines on the market currently process the electrode A side after coating through a first-layer oven and are adjusted to a dried state. As the B side is coated and enters the second-layer oven for secondary baking, the A side coating will dry and crack, affecting product quality and scrap costs. Utility Model Content

[0004] The purpose of the utility model is to provide a device for improving the baking effect of coated pole pieces. By lifting the spray device, when the pole piece A side comes to the B side for spraying, the spray device rises to spray, and the spray roller absorbs the solution and contacts the pole piece A side to keep it moist, and enters the second-layer oven for secondary baking without drying and cracking; when the B side stops spraying, the spray device stops spraying and retracts, breaking away from the contact with the pole piece, thereby improving the product quality and the pole piece baking effect.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A device for improving the baking effect of coated pole pieces, which is arranged between a first oven and a second oven. The lower side of the pole piece after lithium battery coating is dried by the first oven, and the upper side is dried by the second oven. It includes a spray device located below the pole piece, and the spray device includes a spray roller and a spray component spraying toward the spray roller. Lifting components are provided at both ends of the spray roller to drive the spray roller to rise until it abuts against the bottom of the pole piece.

[0007] By adopting the above technical solution, when spraying on the A side of the electrode to the B side, the spray device rises to spray, and the spray roller absorbs the solution and contacts the A side of the electrode to keep it moist, and enters the second-layer oven for secondary baking without drying out; when spraying on the B side stops, the spray device stops spraying and retracts, breaking away from contact with the electrode, thereby improving product quality and electrode baking effect.

[0008] Furthermore, the spray assembly includes a spray rod and a water supply structure for introducing spray water into the spray rod. The spray rod is located below the spray roller and sprays the spray roller upward.

[0009] By adopting the above technical solution, the spray humidification work of the spray roller is facilitated.

[0010] Furthermore, the water adding structure comprises a solution storage box, in which a solution delivery pipe is arranged, and the solution delivery pipe is connected to a solution delivery pump, and the solution delivery pump delivers the solution into the spray rod.

[0011] By adopting the above technical solution, the automatic spraying work of the spray rod can be easily realized and the automation level can be improved.

[0012] Furthermore, the lifting assembly includes a fixed seat and vertical pushing cylinders at both ends of the fixed seat, the spray roller is rotatably connected to the shaft body, and both ends of the shaft body are respectively connected to the upper output shaft of the pushing cylinder.

[0013] By adopting the above technical solution, the lifting and lowering of the spray roller is realized. When the pole piece A side comes to the B side for spraying, the spray device rises to spray; when the B side stops spraying, the spray device stops spraying and retracts.

[0014] Furthermore, the spray assembly also includes a recovery tray, which is located below the pole piece and receives the spray liquid.

[0015] By adopting the above technical solution, the excess spray liquid can be recovered and the cleanliness of the on-site environment can be improved.

[0016] Furthermore, the spray assembly also includes a baffle detachably connected between the spray rod and the spray roller, and the baffle is arranged at both ends of the spray rod to limit the spray range.

[0017] By adopting the above technical solution, it is convenient to replace different baffles according to the width of the pole piece, realize the spray humidification work of different pole pieces, and avoid the accumulation of excess spray liquid at both ends, which leads to excessive humidification at both ends.

[0018] Furthermore, the lower end of the baffle is inclined inward.

[0019] By adopting the above technical solution, the recovery of the spray liquid is facilitated.

[0020] Furthermore, the baffle is integrally arranged, with an opening in the middle and two ends connected to the fixing seat by threads.

[0021] By adopting the above technical solution, the installation of the baffle is facilitated and the replacement is convenient.

[0022] In summary, the utility model has the following beneficial effects:

[0023] A spray assembly is set between the first and second ovens. The lower side (A side) of the electrode after lithium battery coating is dried in the first oven, and the upper side (B side) is dried in the second oven. When the electrode A side passes over the B side for spraying, the spray device rises to spray, and the spray roller absorbs the solution and contacts the A side of the electrode to keep it moist. It enters the second oven for secondary baking without drying and cracking. When the B side stops spraying, the spray device stops spraying and retracts, breaking away from the contact with the electrode, thereby improving product quality and the baking effect of the electrode.

[0024] The spray assembly includes a spray rod and a water supply structure for introducing spray water into the spray rod. The spray rod is located below the spray roller and sprays the spray roller upward, which is convenient for spraying and humidifying the spray roller. The automatic spraying work of the spray rod is realized through the solution storage tank and the solution delivery pump, thereby improving the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of a device for improving the baking effect of coated pole pieces according to the utility model;

[0027] Figure 2 It is a schematic diagram of the specific structure of a spray device in a device for improving the baking effect of a coated electrode in Example 1;

[0028] Figure 3 It is a schematic diagram of the specific structure of a spray device in a device for improving the baking effect of coated pole pieces in Example 2.

[0029] In the figure, 1. spray device; 11. spray roller; 2. solution storage box; 3. solution delivery pipe; 4. solution delivery pump; 5. spray rod; 6. fixed seat; 61. push cylinder; 7. recovery plate; 8. baffle. DETAILED DESCRIPTION

[0030] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Embodiment 1

[0031] A device for improving the baking effect of coated pole pieces, which is arranged between the first and second ovens. The lower side (A side) of the pole piece after lithium battery coating is dried by the first oven, and the upper side (B side) is dried by the second oven.

[0032] like Figure 1 and Figure 2 As shown, it includes a spray device 1 located below the electrode, the spray device 1 includes a spray roller 11 and a spray component spraying toward the spray roller 11, and lifting components are provided at both ends of the spray roller 11 to drive the spray roller 11 to rise until it abuts against the bottom of the electrode; when spraying from the A side to the B side of the electrode, the spray device 1 rises to spray, and the spray roller absorbs the solution and contacts the A side of the electrode to keep it moist, so that it enters the second-layer oven for secondary baking without drying and cracking; when spraying on the B side stops, the spray device 1 stops spraying and retracts, breaking away from contact with the electrode, thereby improving product quality and electrode baking effect.

[0033] like Figure 2 As shown, the spray assembly includes a spray rod 5 and a water adding structure for introducing spray water into the spray rod 5. The spray rod 5 is located below the spray roller 11 and sprays the spray roller 11 upward; the water adding structure includes a solution storage tank 2, and a solution delivery pipe 3 is provided in the solution storage tank 2. The solution delivery pipe 3 is connected to a solution delivery pump 4. The solution delivery pump 4 delivers the solution into the spray rod 5, thereby realizing the automatic spraying operation of the spray rod 5 and improving the level of automation.

[0034] like Figure 2 As shown, the lifting assembly includes a fixed seat 6 and vertical pushing cylinders 61 at both ends of the fixed seat 6, the spray roller 11 is rotatably connected to the shaft body, and the two ends of the shaft body are respectively connected to the upper output shaft of the pushing cylinder 61 to realize the lifting and lowering of the spray roller 11. When the pole piece A side comes to the B side for spraying, the spray device 1 rises to spray; when the B side stops spraying, the spray device 1 stops spraying and retracts. Embodiment 2

[0035] like Figure 3 As shown, the structure of this embodiment is roughly the same as that of the first embodiment, and the difference is that the spray assembly also includes a recovery tray 7, which is located below the electrode and recovers excess spray liquid to improve the cleanliness of the on-site environment. The recovery tray 7 can be fixed at the bottom position of the fixed seat, or fixed above the solution delivery pump 4, leaving only a pipe hole for the solution delivery pipe 3 at the top of the solution delivery pump 4 to pass through.

[0036] The spray assembly also includes a baffle 8 detachably connected between the spray rod 5 and the spray roller 11. The baffle 8 is arranged at both ends of the spray rod 5 to limit the spray range, and the lower end of the baffle 8 is inclined inward. In this embodiment, the baffles 8 on both sides are integrated into a whole plate, and the middle of the whole plate is opened to form a limited spray range, and the opening position is bent downward to form an inclined hypotenuse. Both ends of the whole plate are connected to the fixing seat 6 by threads for easy replacement. It can also be adapted to the specifications of the electrode by replacing the spray roller 11.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A device for improving the baking effect of coated pole pieces, characterized in that: The apparatus is arranged between a first-layer oven and a second-layer oven, wherein the lower side of the electrode sheet after lithium battery coating is dried by the first-layer oven, and the upper side is dried by the second-layer oven; the apparatus comprises a spray device (1) located below the electrode sheet, wherein the spray device (1) comprises a spray roller (11) and a spray component for spraying toward the spray roller (11), and lifting components are provided at both ends of the spray roller (11) to drive the spray roller (11) to rise until it abuts against the bottom of the electrode sheet.

2. A device for improving the baking effect of coated pole pieces according to claim 1, characterized in that: The spray assembly comprises a spray rod (5) and a water supply structure for introducing spray water into the spray rod (5); the spray rod (5) is located below the spray roller (11) and sprays the spray roller (11) upwards.

3. The device for improving the baking effect of coated pole pieces according to claim 2, characterized in that: The water adding structure comprises a solution storage box (2), a solution delivery pipe (3) is arranged in the solution storage box (2), the solution delivery pipe (3) is connected to a solution delivery pump (4), and the solution delivery pump (4) delivers the solution into the spray rod (5).

4. The device for improving the baking effect of coated pole pieces according to claim 2, characterized in that: The lifting assembly comprises a fixed seat (6) and vertical pushing cylinders (61) at both ends of the fixed seat (6); the spray roller (11) is rotatably connected to a shaft body, and both ends of the shaft body are respectively connected to the upper output shaft of the pushing cylinder (61).

5. The device for improving the baking effect of coated pole pieces according to claim 4, characterized in that: The spray assembly further comprises a recovery disc (7), which is located below the pole piece and receives the spray liquid.

6. A device for improving the baking effect of coated pole pieces according to claim 4 or 5, characterized in that: The spray assembly further comprises a baffle (8) detachably connected between the spray rod (5) and the spray roller (11); the baffle (8) is disposed at both ends of the spray rod (5) to limit the spray range.

7. The device for improving the baking effect of coated pole pieces according to claim 6, characterized in that: The lower end of the baffle (8) is arranged to be inclined inward.

8. The device for improving the baking effect of coated pole pieces according to claim 6, characterized in that: The baffle (8) is integrally provided, has an opening in the middle, and has two ends connected to the fixing seat (6) via threads.

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