Device for coating antioxidant on tab in continuous coating polar plate

Abstract

The utility model discloses a device for coating an antioxidant on a tab in a continuously-coated polar plate, which comprises a U-shaped fixing block, a polar plate body, an auxiliary connecting strip and a tab, wherein the opening of the polar plate body horizontally faces the continuously-coated polar plate during working, and the auxiliary connecting strip and the tab extend into the opening of the U-shaped fixing block; the guide limiting mechanism comprises a side guide roller arranged at the bottom of the opening of the U-shaped fixing block, and an upper guide roller and a lower guide roller which are respectively arranged on two arms of the U-shaped fixing block; the oiling mechanism comprises an upper oil guide pipe and a lower oil guide pipe which are arranged on the two arms of the U-shaped fixing block correspondingly, the upper oil guide pipe and the lower oil guide pipe are oppositely arranged, and oiling openings are formed in the opposite faces of the upper oil guide pipe and the lower oil guide pipe; during working, the side guide rollers, the upper guide rollers and the lower guide rollers abut against the outer side faces, the top faces and the bottom faces of the auxiliary connecting strips correspondingly. And the oil coating ports of the upper oil guide pipe and the lower oil guide pipe respectively abut against to-be-coated antioxidant areas on the upper and lower surfaces of the tab. The oil coating areas are arranged at the upper ends of the tabs and the cast-weld welding positions, so that the surfaces are resistant to oxidation, poor welding is prevented, and medium and large currents can be borne in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, in particular to a device for coating an antioxidant on a tab of a continuous coating plate. Background Art

[0002] During the curing process of the continuous coated plate, the tabs of the continuous coated plate are easily oxidized due to high humidity and high temperature curing, and the oxide layer is thick, which makes it difficult to brush the tabs in the subsequent assembly process, and the oxides cannot be brushed clean, resulting in poor welding and false welding when the tabs are welded to the busbar. In addition, the low current carrying capacity in the later use causes the fuse phenomenon.

[0003] The method disclosed in the prior art is to directly place the processed tabs into the antioxidant pool. This method first causes the tabs to be over-soaked in antioxidants, resulting in an overly thick antioxidant film. Second, this method requires a long time to drain the antioxidants attached to the tab material. Therefore, a lot of time is required to drain in the later stage of production and processing. In addition, under this method, the thickness of the antioxidant attached to the surface of the tab material is too large, which affects the electrical effect of later use.

[0004] The utility model with announcement number CN218251134U discloses a lithium battery tab material strip unwinding and antioxidant impregnation device, including an unwinding mechanism and an antioxidant impregnation mechanism, the unwinding mechanism includes a frame, the antioxidant impregnation mechanism includes a plurality of impregnation plates assembled and connected to the frame, the impregnation plates are provided with an impregnation tank, the bottom of the impregnation tank is provided with a sponge pad, and the sponge pad is adsorbed with antioxidant; a plurality of lower pressure columns are rotatably connected between the tank walls of the impregnation tank, and the unwinding tab material strip is limited at the bottom of the lower pressure column; the above device also includes a loading mechanism located at the discharge end of the plurality of impregnation plates; the loading mechanism includes a material rack fixedly connected to the end position of the plurality of impregnation plates, a material roller is rotatably connected to the material rack, a material roller is provided with a loading tank, and the end of the material roller is fixedly assembled and connected with a driving motor. The above design realizes the integration of the transmission of tab material and the impregnation of tab material to increase work efficiency; saves antioxidants and increases the product qualification rate.

[0005] And publication number CN104175020A discloses a water-based flux for eliminating the oxide layer of the tab. The flux of the invention has strong welding ability, no corrosion and residue, simple preparation method, extends the service life of the battery, and has good flame retardant performance.

[0006] However, the above existing technologies cannot solve the problem that the tabs of the continuously coated plates are easily oxidized due to high humidity and high temperature curing. Utility Model Content

[0007] The purpose of the utility model is to provide a device for coating the tabs of a continuously coated plate with an antioxidant. By providing an oil coating area at the upper end of the tab and the cast welding position, the problem of easy oxidation of the tabs of the continuously coated plate caused by high humidity and high temperature curing during the curing process can be solved.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows:

[0009] The utility model provides a device for coating an antioxidant on a tab in a continuous coating plate, wherein the continuous coating plate comprises a continuous plate body, tabs are sequentially arranged on the side of the continuous plate body, and auxiliary connecting strips are arranged on the outer side of each tab. The continuous coating plate is cut into a single-piece plate, and the device comprises:

[0010] A U-shaped fixing block, wherein the opening is horizontally facing the plate body of the continuous coating plate when in operation, and the auxiliary connecting strip and the pole ear extend into the opening of the U-shaped fixing block;

[0011] A guide and limiting mechanism, comprising a side guide roller arranged at the bottom of the opening of the U-shaped fixing block, and an upper guide roller and a lower guide roller respectively arranged at two arms of the U-shaped fixing block;

[0012] The oiling mechanism comprises an upper oil pipe and a lower oil pipe respectively arranged on two arms of the U-shaped fixing block, the upper oil pipe and the lower oil pipe are arranged opposite to each other and have oiling ports on the opposite surfaces, and the inner cavities of the upper oil pipe and the lower oil pipe are filled with oil cores for absorbing the antioxidant; the oiling mechanism also comprises a storage tank for storing the antioxidant, and a capillary conduit for supplying the antioxidant from the storage tank to the oil cores in the upper oil pipe and the lower oil pipe;

[0013] When working, the side guide roller, the upper guide roller and the lower guide roller are respectively in contact with the outer side, top and bottom surfaces of the auxiliary connecting strip; the oil application ports of the upper and lower oil guide pipes are respectively in contact with the areas to be coated with the antioxidant on the upper and lower surfaces of the pole lugs. The length of the area to be coated with the antioxidant is set to 2-4 mm.

[0014] The material of the oil core can be selected from asbestos material.

[0015] Preferably, the oil coating ports of the upper and lower oil coating pipes are provided with chamfers on the side where the continuous coating plate enters. The setting of the chamfers can reduce stress concentration, thereby improving the strength and durability of the oil coating pipes.

[0016] Preferably, a mounting bracket for mounting an upper oil guide pipe or a lower oil guide pipe is respectively provided on the two arms of the U-shaped fixing block, each of the mounting brackets comprises a vertical mounting rod for fixedly mounting with one arm of the U-shaped fixing block, a horizontally arranged pressing block is provided on the vertical mounting rod, the upper oil guide pipe or the lower oil guide pipe is fixedly mounted on the pressing block, and mounting holes for the upper oil guide pipe or the lower oil guide pipe to extend into are respectively provided on the two arms of the U-shaped fixing block.

[0017] Preferably, the vertical mounting rod at least partially has an external thread and is cooperated with a pair of limit adjustment nuts, one end of the pressure block is sleeved on the vertical mounting rod and located between the two limit adjustment nuts, and a compression spring is also sleeved on the vertical mounting rod between the pressure block and the upper limit adjustment nut.

[0018] Furthermore, the pressing block covers the inlet of the upper oil guide pipe or the lower oil guide pipe, and the capillary conduit supplies antioxidant to the oil core in the upper oil guide pipe and the lower oil guide pipe through a guide needle that passes through the pressing block and extends into the oil core. With the guide needle inserted, oil is absorbed through the capillary conduit by using capillary phenomenon.

[0019] Preferably, the lug thickness is set to d, and the spacing between the oil application ports of the upper and lower oil guide pipes is d-0.2 to d-0.5 mm, so that the oil application ports of the upper and lower oil guide pipes can fully contact with the lugs.

[0020] Beneficial effects of the utility model:

[0021] The utility model is a device for coating an antioxidant on a pole ear in a continuous coating electrode plate. By providing an oiling area at the upper end of the pole ear and the cast welding position, the surface is made resistant to oxidation and poor welding is prevented, thereby ensuring that medium and large currents can be carried in the later stage and the battery preparation cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a front view and a cross-sectional view of a device for coating an antioxidant on the tabs of a continuous coating plate;

[0023] Figure 2 It is a left view and a cross-sectional view of the device for coating the anti-oxidant on the tab of the continuous coating plate of the utility model;

[0024] Figure 3 It is a schematic diagram of a single plate;

[0025] Figure 4 It is a schematic diagram of continuous coating plate;

[0026] Figure 5 It is a partial schematic diagram of coating antioxidant on the tab of the continuous coating plate;

[0027] Markings in the figure: 1-plate, 2-ear, 3-auxiliary connecting strip, 4-U-shaped fixing block, 5-side guide roller, 6-upper guide roller, 7-lower guide roller, 8-upper oil guide pipe, 9-lower oil guide pipe, 10-oil core, 11-storage tank, 12-capillary tube, 13-chamfer, 14-pressing block, 15-limit adjustment nut, 16-compression spring, 17-guide needle, 18-area to be coated with antioxidant, 19-cutting line, 20-single-piece plate. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-5 The utility model provides a device for coating an antioxidant on a pole ear in a continuous coating plate, wherein the continuous coating plate comprises a continuous plate body 1, and pole ears 2 are sequentially arranged on the side of the continuous plate body 1, and an auxiliary connecting strip 3 is arranged on the outer side of each pole ear 2. The continuous coating plate is cut by a cutting line 19 to obtain a single plate 20. The device of the utility model comprises: a U-shaped fixing block 4, the opening of which is horizontally facing the pole plate 1 body of the continuous coating plate during operation, and the auxiliary connecting strip 3 and the pole ear 2 extend into the opening of the U-shaped fixing block 4; the device also has a guiding and limiting mechanism, including a side guide roller 5 arranged at the bottom of the opening of the U-shaped fixing block 4, and two side guide rollers 5 respectively arranged at the two arms of the U-shaped fixing block 4. The upper guide roller 6 and the lower guide roller 7; the device also includes an oiling mechanism, including an upper oil pipe 8 and a lower oil pipe 9 respectively arranged on the two arms of the U-shaped fixed block 4, and the upper and lower oil pipes can be made of titanium alloy material with wear resistance; the upper oil pipe 8 and the lower oil pipe 9 are arranged opposite to each other, and have oiling ports on the opposite surfaces, and the inner cavities of the upper oil pipe 8 and the lower oil pipe 9 are filled with an oil core 10 for absorbing antioxidants, and the material of the oil core can be asbestos material; the oiling mechanism also includes a storage tank 11 for storing antioxidants, and a capillary conduit 12 for supplying antioxidants from the storage tank 11 to the oil core 10 in the upper oil pipe 8 and the lower oil pipe 9;

[0030] When working, the side guide roller 5, the upper guide roller 6 and the lower guide roller 7 are respectively in contact with the outer side, top and bottom surfaces of the auxiliary connecting strip 3; the oiling ports of the upper oil guide pipe 8 and the lower oil guide pipe 9 are respectively in contact with the anti-oxidant areas 18 to be coated on the upper and lower surfaces of the pole lug 2. The length of the anti-oxidant area 18 to be coated is set to 2-4 mm, and the thickness of the pole lug is set to d. In order for the pole lug to fully contact the coating ports of the upper oil guide pipe 8 and the lower oil guide pipe 9, the spacing between the oiling ports of the upper oil guide pipe 8 and the lower oil guide pipe 9 can be set to d-0.2 to d-0.5 mm.

[0031] Specifically, in order to reduce stress concentration and improve the strength and durability of the oil pipe, a chamfer 13 may be provided on the oil coating port of the upper oil pipe 8 and the lower oil pipe 9 at the side where the coating electrode enters.

[0032] A mounting bracket for mounting an upper oil guide pipe 8 or a lower oil guide pipe 9 is respectively provided on the two arms of the U-shaped fixing block 4, each mounting bracket comprises a vertical mounting rod for fixedly mounting with one arm of the U-shaped fixing block 4, a horizontally arranged pressing block 14 is provided on the vertical mounting rod, the upper oil guide pipe 8 or the lower oil guide pipe 9 is fixedly mounted on the pressing block 14, and a mounting hole for the upper oil guide pipe 8 or the lower oil guide pipe 9 to extend into is respectively provided on the two arms of the U-shaped fixing block 4.

[0033] Furthermore, at least part of the vertical mounting rod has an external thread, and is equipped with a pair of limit adjustment nuts 15, one end of the pressure block 14 is sleeved on the vertical mounting rod and is located between the two limit adjustment nuts 15, and a compression spring 16 is sleeved on the vertical mounting rod between the pressure block 14 and the upper limit adjustment nut 15. The setting of the spring can ensure that the oil guide pipe has a buffering effect after being fixed, and the limit adjustment nut ensures that the oil guide pipe is tightly pressed against the surface of the pole ear 2, and is directly coated on the area 18 to be coated with the antioxidant to prevent the pole ear 2 from oxidation.

[0034] Furthermore, the pressing block 14 covers the entrance of the upper oil guide tube 8 or the lower oil guide tube 9, and the capillary conduit 12 supplies the antioxidant to the oil core 10 in the upper oil guide tube 8 and the lower oil guide tube 9 through the guide needle 17 that passes through the pressing block 14 and extends into the oil core 10. With the guide needle 17 inserted, the capillary conduit 12 absorbs the oil by using the capillary phenomenon.

[0035] When the device of the utility model is used, the side guide roller 5, the upper guide roller 6 and the lower guide roller 7 are respectively in contact with the outer side surface, the top surface and the bottom surface of the auxiliary connecting strip 3; the oiling ports of the upper oil guide pipe 8 and the lower oil guide pipe 9 are respectively in contact with the upper and lower surfaces of the pole ear 2 to be coated with the antioxidant area 18. The continuously coated plate is cut by the cutting line 19 to obtain a single plate 20. After cutting, the oiling ports of the upper oil guide pipe 8 and the lower oil guide pipe 9 are respectively coated with the antioxidant on the upper and lower surfaces of the pole ear 2. It can ensure that the pole ear of the continuously coated plate is not easy to oxidize in the high humidity and high temperature curing environment during the curing process, and the welding defect rate is greatly reduced when the pole ear is welded to the busbar, thereby ensuring that it can carry medium and large currents in the later stage.

[0036] The contents described in the implementation mode of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the utility model also includes equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. A device for coating an antioxidant on a tab in a continuous coating plate, wherein the continuous coating plate comprises a continuous plate body, tabs are sequentially arranged on the side of the continuous plate body, and auxiliary connecting strips are arranged on the outer side of each tab. The continuous coating plate is cut into single-piece plates, characterized in that: The device comprises: A U-shaped fixing block, wherein the opening is horizontally facing the plate body of the continuous coating plate when in operation, and the auxiliary connecting strip and the pole ear extend into the opening of the U-shaped fixing block; A guide and limiting mechanism, comprising a side guide roller arranged at the bottom of the opening of the U-shaped fixing block, and an upper guide roller and a lower guide roller respectively arranged at two arms of the U-shaped fixing block; The oiling mechanism comprises an upper oil pipe and a lower oil pipe respectively arranged on two arms of the U-shaped fixing block, the upper oil pipe and the lower oil pipe are arranged opposite to each other and have oiling ports on the opposite surfaces, and the inner cavities of the upper oil pipe and the lower oil pipe are filled with oil cores for absorbing the antioxidant; the oiling mechanism also comprises a storage tank for storing the antioxidant, and a capillary conduit for supplying the antioxidant from the storage tank to the oil cores in the upper oil pipe and the lower oil pipe; During operation, the side guide rollers, upper guide rollers and lower guide rollers respectively abut against the outer side surface, top surface and bottom surface of the auxiliary connecting strip; the oil application ports of the upper oil guide pipe and the lower oil guide pipe respectively abut against the areas on the upper and lower surfaces of the pole ear to be coated with the antioxidant.

2. The device for coating the tabs of the plate with an antioxidant according to claim 1, characterized in that: The oil core is made of asbestos material.

3. The device for coating the tabs of the plate with an antioxidant according to claim 1, characterized in that: The oil coating ports of the upper oil guide pipe and the lower oil guide pipe are provided with chamfers on the side where the oil coating plates enter.

4. The device for coating the tabs of the plate with an antioxidant according to claim 1, characterized in that: A mounting bracket for mounting an upper oil guide pipe or a lower oil guide pipe is respectively provided on the two arms of the U-shaped fixing block, each of the mounting brackets comprises a vertical mounting rod for fixedly mounting with one arm of the U-shaped fixing block, a horizontally arranged pressing block is provided on the vertical mounting rod, and the upper oil guide pipe or the lower oil guide pipe is fixedly mounted on the pressing block. The two arms of the U-shaped fixing block are respectively provided with mounting holes for the upper oil guide pipe or the lower oil guide pipe to extend into.

5. The device for coating the tabs of the plate with an antioxidant according to claim 4, characterized in that: The vertical mounting rod at least partially has an external thread and is equipped with a pair of limit adjustment nuts. One end of the pressure block is sleeved on the vertical mounting rod and located between the two limit adjustment nuts. A compression spring is also sleeved on the vertical mounting rod and located between the pressure block and the upper limit adjustment nut.

6. The device for coating the tabs of the plate with an antioxidant according to claim 4, characterized in that: The pressing block covers the inlet of the upper oil guide pipe or the lower oil guide pipe, and the capillary conduit supplies antioxidant to the oil cores in the upper oil guide pipe and the lower oil guide pipe through a guide needle that passes through the pressing block and extends into the oil core.

7. The device for coating the tabs of the plate with an antioxidant according to claim 1, characterized in that: The lug thickness is set to d, and the spacing between the oil application ports of the upper oil guide pipe and the lower oil guide pipe is d-0.2 to d-0.5 mm.

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