Large-cylinder short-circuit-preventing positive electrode collector plate and coating device thereof

Abstract

The utility model discloses a large cylinder anti-short circuit positive pole current collecting disc and coating device, including welding disc and setting up the protrusion on the one side of welding disc, the center of welding disc is equipped with the through groove that runs through its thickness direction, the protrusion is equipped with the groove that runs through its top wall, the through groove is communicated with the groove, and the through groove is equipped with the through groove that runs through its top wall. The peripheral wall of the welding disc and the peripheral areas of the two sides are coated with insulating layers, the thickness of each insulating layer ranges from 0.3 mm to 0.8 mm, and the width of each insulating layer ranges from 3 mm to 5 mm. The utility model has the beneficial effects that the insulating layers are coated on the peripheral wall and the edges of the upper side and the lower side of the collector plate, so that a good insulating effect can be achieved, and short circuit caused by the contact between the collector plate and the cathode of the steel shell during notching is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of current collecting discs, and in particular relates to a large cylindrical short-circuit-proof positive current collecting disc and a coating device thereof. Background Art

[0002] Cylindrical batteries are the most common type of battery in the new energy industry. In order to meet the requirements of high capacity and high rate charge and discharge of batteries, large cylindrical batteries with full tabs have emerged. The welding of positive and negative electrodes with full tabs requires the use of a collector plate structure to connect with the outside. On both sides of the collector plate, in the welding area, tape needs to be used for insulation, but the tape is thick and is prone to deviation during wrapping, resulting in low product quality and low wrapping efficiency. Utility Model Content

[0003] The utility model aims to provide a large cylindrical short-circuit-proof positive electrode current collecting disc and a coating device thereof.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A large cylindrical short-circuit-proof positive current collector disk comprises a welding disk and a protrusion arranged on one side of the welding disk, wherein a through groove penetrating the welding disk in the thickness direction is provided at the center of the welding disk, a groove penetrating the top wall of the protrusion is provided on the protrusion, the through groove is connected to the groove, an insulating layer is coated on the outer peripheral wall of the welding disk and the peripheral areas on both sides, the thickness of the insulating layer is between 0.3 mm and 0.8 mm, and the width of the insulating layer is between 3 mm and 5 mm.

[0006] A coating device comprises a frame, a loading and unloading mechanism and a coating mechanism are arranged below the frame, the loading and unloading mechanism comprises a synchronous belt, a plurality of trays for placing current collecting plates are arranged on the synchronous belt, and the coating mechanism comprises a containing box containing insulating liquid and a moving component for moving the current collecting plate.

[0007] Preferably, a positioning column is provided on the top surface of the tray, and the size of the positioning column is adapted to the through slot.

[0008] Preferably, the moving component includes a cylinder arranged on a frame, a motor is arranged at the movable end of the cylinder, a rotating rod is arranged at the movable end of the motor, a connecting plate is arranged on the side of the rotating rod away from the motor, a clamping claw is arranged on one side of the connecting plate, and a rotating cylinder for controlling the rotation of the clamping claw is arranged on the other side of the connecting plate.

[0009] Preferably, the clamping jaw is an inner support clamping jaw.

[0010] Preferably, the positioning column is divided into a positioning part located at the top and a supporting part located at the bottom, the size of the positioning part is adapted to the through slot, and the diameter of the through slot is smaller than the diameter of the supporting part and smaller than the diameter of the welding pad.

[0011] Preferably, a drying area is provided on the synchronous belt, and a drying box is provided in the drying area. The drying box has an opening for the synchronous belt to pass through.

[0012] The beneficial effect of the utility model is that by coating the insulating layer on the outer peripheral wall and the upper and lower edge positions of the current collecting plate, a good insulating effect can be achieved to avoid the current collecting plate contacting the negative electrode of the steel shell and causing a short circuit when punching the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the current collecting plate in the utility model.

[0014] Figure 2 It is a top view of the current collecting plate in the utility model.

[0015] Figure 3 It is a bottom view of the current collecting plate in the utility model.

[0016] Figure 4 It is a front view of the coating device in the utility model.

[0017] Among them: collecting plate 10, welding plate 12, protrusion 14, groove 16, through slot 18, loading and unloading mechanism 20, synchronous belt 22, tray 24, positioning column 26, positioning part 262, supporting part 264, frame 30, accommodating box 32, cylinder 34, motor 36, rotating rod 38, connecting plate 40, clamping claw 42, rotating cylinder 44. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] like Figures 1 to 3 As shown, a large cylindrical anti-short-circuit positive current collector of the utility model comprises a welding disk 12 and a protrusion 14 arranged on one side of the welding disk 12, a through groove 18 penetrating the welding disk 12 in the center in the thickness direction, a groove 16 penetrating the top wall thereof is arranged on the protrusion 14, the through groove 18 is connected with the groove 16, an insulating layer is coated on the outer peripheral wall of the welding disk 12 and the peripheral areas on both sides, the thickness of the insulating layer is between 0.3 mm and 0.8 mm, and the width of the insulating layer is between 3 mm and 5 mm; the insulating layer plays a good insulating role, avoiding the current collector 10 from contacting the negative electrode of the steel shell to cause a short circuit when punching the groove, and at the same time can reduce the volume of the winding core and save space.

[0020] like Figure 4As shown, a coating device of the utility model includes a frame 30, and a loading and unloading mechanism 20 and a coating mechanism are arranged below the frame 30. The loading and unloading mechanism 20 includes a synchronous belt 22, and a plurality of trays 24 for placing the collecting plates 10 are arranged on the synchronous belt 22, and the trays 24 are arranged equidistantly. The coating mechanism includes a containing box 32 containing insulating liquid and a moving component for moving the collecting plates 10; the synchronous belt 22 is used to transport the collecting plates 10, and the trays 24 are used to place the collecting plates 10 so that the collecting plates 10 are arranged equidistantly, and the moving component is used to transfer the collecting plates 10 to the containing box 32 for coating an insulating layer, and put the coated collecting plates 10 back on the trays 24, during which the synchronous belt 22 is suspended.

[0021] A positioning column 26 is provided on the top surface of the tray 24 , and the size of the positioning column 26 is adapted to the through slot 18 : by placing the collecting plate 10 on the positioning column 26 , the through slot 18 and the positioning column 26 are engaged, thereby positioning and limiting the collecting plate 10 .

[0022] The moving assembly includes a cylinder 34 disposed on the frame 30, a motor 36 is disposed at the movable end of the cylinder 34, a rotating rod 38 is disposed at the movable end of the motor 36, a connecting plate 40 is disposed on the side of the rotating rod 38 away from the motor 36, a clamping claw 42 is disposed on one side of the connecting plate 40, and a rotating cylinder 44 for controlling the rotation of the clamping claw 42 is disposed on the other side of the connecting plate 40;

[0023] The clamping jaw 42 is an inner-supporting clamping jaw 42 ; the inner-supporting clamping jaw 42 supports from the inside of the groove 16 to the outside to achieve the purpose of clamping the collecting plate 10 , and is more stable and smaller in size.

[0024] The positioning column 26 is divided into a positioning portion 262 located at the top and a supporting portion 264 located at the bottom. The size of the positioning portion 262 is adapted to the through slot 18, and the diameter of the through slot 18 is smaller than the diameter of the supporting portion 264, which is smaller than the diameter of the welding disk 12. The positioning portion 262 and the through slot 18 are used for positioning and limiting relative to each other, and the supporting portion 264 is used to support the collecting plate 10 so that a certain distance is maintained between the collecting plate 10 and the tray 24 to prevent the insulating layer on the bottom surface of the collecting plate 10 from contacting the tray 24 before solidification, thereby preventing the insulating layer from being uneven.

[0025] A drying area is provided on the synchronous belt 22, and a drying box (not shown in the figure) is provided in the drying area. The drying box has an opening for the synchronous belt 22 to pass through; the collecting plate is dried by the drying box, and the opening corresponds to the cross-section of the synchronous belt 22, the positioning column 26 and the collecting plate 10, thereby reducing heat loss in the drying box.

[0026] Working principle: When in use, the synchronous belt 22 drives the tray 24 to perform equidistant intermittent motion. The positioning column 26 on the tray 24 is used to position the collecting plate 10. When the tray 24 comes under the clamping claw 42, the movable end of the cylinder 34 extends to drive the cylinder 34 to move downward, and then the clamping claw 42 clamps the collecting plate 10, and the movable end of the cylinder 34 contracts to drive the collecting plate 10 to move upward, and then the motor 36 rotates 90 degrees to drive the collecting plate 10 to move above the receiving box 32. At this time, the collecting plate 10 is in a vertical state, and then the movable end of the cylinder 34 moves downward to make the welding plate 1 2 is immersed in the insulating liquid, and then the rotating cylinder 44 drives the clamping jaws 42 to rotate, so that the outer peripheral wall of the welding disk 12 and the outer peripheral areas of the two side walls are coated with the insulating liquid, and then the cylinder 34 and the motor 36 cooperate to drive the collecting disk 10 to return to the initial position, that is, on the positioning column 26, and then the clamping jaws 42 are released. Since the diameter of the supporting portion 264 is smaller than the diameter of the welding disk 12, the positioning column 26 will not contact the insulating liquid on the collecting disk 10, and then the synchronous belt 22 continues to move, driving the collecting disk 10 into the drying box to dry the insulating liquid.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large cylindrical short-circuit-proof positive electrode current collector, comprising a welding plate and a protrusion arranged on one side of the welding plate, characterized in that: A through groove is provided in the center of the welding pad and runs through the thickness direction thereof, and a groove is provided on the protrusion and runs through the top wall thereof, and the through groove is connected to the groove. An insulating layer is coated on the outer peripheral wall of the welding pad and the outer areas on both sides, and the thickness of the insulating layer is between 0.3 mm and 0.8 mm, and the width of the insulating layer is between 3 mm and 5 mm.

2. A coating device for producing the large cylindrical short-circuit-proof positive electrode current collector disc according to claim 1, characterized in that: It comprises a frame, under which a loading and unloading mechanism and a coating mechanism are arranged, the loading and unloading mechanism comprises a synchronous belt, on which a plurality of trays for placing current collecting plates are arranged, and the coating mechanism comprises a containing box containing insulating liquid and a moving component for moving the current collecting plate.

3. The coating device according to claim 2, characterized in that: A positioning column is arranged on the top surface of the tray, and the size of the positioning column is matched with the through slot.

4. The coating device according to claim 2, characterized in that: The moving component includes a cylinder arranged on a frame, a motor is arranged at the movable end of the cylinder, a rotating rod is arranged at the movable end of the motor, a connecting plate is arranged on the side of the rotating rod away from the motor, a clamping claw is arranged on one side of the connecting plate, and a rotating cylinder for controlling the rotation of the clamping claw is arranged on the other side of the connecting plate.

5. The coating device according to claim 4, characterized in that: The clamping jaws are inner supporting clamping jaws.

6. The coating device according to claim 3, characterized in that: The positioning column is divided into a positioning part located at the top and a supporting part located at the bottom. The size of the positioning part is adapted to the through slot. The diameter of the through slot is smaller than the diameter of the supporting part and smaller than the diameter of the welding pad.

7. The coating device according to claim 2, characterized in that: A drying area is arranged on the synchronous belt, a drying box is arranged in the drying area, and an opening is provided in the drying box for the synchronous belt to pass through.

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