Pole piece material belt deburring device, pole piece trimming equipment and pole piece deburring method

Abstract

The invention provides a pole piece material belt deburring device, pole piece edge cutting equipment and a pole piece deburring method. The deburring device for the pole piece material belt comprises a box body and a deburring assembly, a material belt inlet and a material belt outlet are respectively formed in the box body; the material belt inlet communicates with the material belt outlet through an inner cavity of the box body, and a feeding channel is formed. A pole piece material belt penetrates through the feeding channel; the burr removing assembly is arranged close to the edge of the pole piece material belt; the burr removing assembly comprises an insulating support, a positive conductive needle, a negative conductive needle and a power source, the insulating support is provided with an installing face, and the installing face faces the edge of the pole piece material belt; the positive conductive needle and the negative conductive needle are mounted on the mounting surface at an interval and are respectively arranged on two sides of the edge of the pole piece material belt; the positive electrode of the power supply is electrically connected to the positive conductive needle, and the negative electrode of the power supply is electrically connected to the negative conductive needle, so that a deburring arc can be formed between the positive conductive needle and the negative conductive needle, and the deburring arc ignites burrs on the edge of a pole piece material belt to realize quick removal of the burrs.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pole piece production equipment, and in particular to a pole piece material strip deburring device, a pole piece edge trimming device and a pole piece deburring method. Background Art

[0002] At present, when the pole piece strip is coated with active materials, the coating near the edges of the pole piece strip will be uneven due to operational reasons. Therefore, the edges of the pole piece strip need to be cut after coating. However, the edges of the pole piece strip are prone to burrs after cutting. The burrs pierce the diaphragm when the pole piece is wound to make the battery, posing a safety hazard. In response to the above problems, some manufacturers have made further research and development.

[0003] For example, Chinese patent document CN101068045A discloses a battery pole piece deburring method and a deburring device thereof, which uses a roller of a rolling machine to roll the edge of the battery pole piece so that the edge of the battery pole piece converges inward, thereby completing the battery pole piece deburring process.

[0004] However, the above-mentioned battery pole piece deburring method and the design of the deburring device have the following problems:

[0005] The above-mentioned battery pole piece deburring method and deburring device thereof will cause wear to the pole piece strip during the process of rolling the edge of the pole piece strip by a rolling machine, causing the active material coated on the pole piece strip to fall off. This will cause the new edge formed after the edge of the pole piece strip is cut off to be unevenly coated with active material, thereby affecting the consistency of the quality of batteries subsequently processed from the pole piece strip. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a pole piece material strip deburring device, a pole piece trimming device and a pole piece deburring method with low wear on the pole piece material strip and high deburring efficiency.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A device for deburring a pole piece, comprising:

[0009] A box body, the box body is used to be installed on the frame, and a material strip inlet and a material strip outlet are formed on the box body respectively; the material strip inlet is connected to the material strip outlet through the inner cavity of the box body, and a feeding channel is formed; the feeding channel is used to pass the pole piece material strip; and

[0010] A burr removal component, which is installed in a box and is arranged close to the edge of the pole piece strip; the burr removal component includes an insulating bracket, a positive conductive needle, a negative conductive needle and a power supply, the insulating bracket has a mounting surface, and the mounting surface faces the edge of the pole piece strip; the positive conductive needle and the negative conductive needle are installed on the mounting surface at intervals and are respectively arranged on both sides of the edge of the pole piece strip; the power supply is arranged on the insulating bracket, the positive pole of the power supply is electrically connected to the positive conductive needle, and the negative pole of the power supply is electrically connected to the negative conductive needle, so that a deburring arc is formed between the positive conductive needle and the negative conductive needle, and the deburring arc is used to ignite and remove burrs on the edge of the pole piece strip.

[0011] In one embodiment, the number of the positive conductive needles and the number of the negative conductive needles are both multiple, and the multiple positive conductive needles are arranged side by side on the first side of the edge of the pole piece strip, and the multiple negative conductive needles are arranged side by side on the second side of the edge of the pole piece strip, and each of the positive conductive needles is arranged corresponding to one of the negative conductive needles.

[0012] In one of the embodiments, a positive conductive sheet is further provided on the insulating bracket, and the positive conductive sheet is electrically connected to the positive electrode of the power supply; a plurality of positive conductive needles are embedded in the insulating bracket and are all in contact with the positive conductive sheet.

[0013] In one of the embodiments, a negative conductive sheet is further provided on the insulating bracket, and the negative conductive sheet is electrically connected to the negative electrode of the power source; a plurality of negative conductive needles are embedded in the insulating bracket and are all in contact with the negative conductive sheet.

[0014] In one of the embodiments, a guide rail is provided on the inner cavity wall of the box body, the guide rail extends toward the edge of the pole piece strip, and the insulating bracket is slidably mounted on the guide rail.

[0015] In one of the embodiments, a sweeping brush is further provided on the insulating bracket, and the mounting surface and the sweeping brush are sequentially arranged along the moving direction of the pole piece strip; the bristles of the sweeping brush are used to slide against the edge of the pole piece strip.

[0016] In one embodiment, the edge sweeping brush includes a brush handle and bristles, the bristles are arranged on the brush handle, and the insulating bracket is provided with a lifting slide hole, and the lifting slide hole extends vertically in an oval shape; the brush handle is slidably arranged in the lifting slide hole, and the positions on the brush handle located on both sides of the lifting slide hole are respectively threaded with sleeves, and the two sleeves are clamped on the insulating bracket.

[0017] In one embodiment, an insulating border is provided on the edge of the mounting surface; the tip of the positive conductive needle extends out of the insulating border and is close to the first side of the edge of the pole piece strip; the tip of the negative conductive needle extends out of the insulating border and is close to the second side of the edge of the pole piece strip.

[0018] A pole piece trimming device comprises a frame, a cutter assembly and a pole piece strip deburring device of any of the above embodiments; the cutter assembly and the box body are both mounted on the frame, the cutter assembly and the box body are sequentially arranged along the moving direction of the pole piece strip, and the cutter assembly is used to cut the edge of the pole piece strip.

[0019] A method for removing burrs from a pole piece, performed by using the pole piece material strip deburring device of any of the above embodiments, comprises the following steps:

[0020] Obtaining a pole piece material strip, and passing the pole piece material strip through the feeding channel;

[0021] Driving the pole piece strip to move intermittently in the feeding channel;

[0022] When the electrode strip moves, the power supply is turned off to cut off the power to the positive conductive needle and the negative conductive needle;

[0023] When the pole piece strip is stationary, the power source is activated to energize the positive conductive needle and the negative conductive needle.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] The above-mentioned electrode strip deburring device, since the strip inlet is connected to the strip outlet through the inner cavity of the box to form a feeding channel, after the edge of the electrode strip is cut, the electrode strip is passed through the feeding channel. At this time, since the burr removal component is arranged close to the edge of the electrode strip, and the mounting surface faces the edge of the electrode strip, the positive conductive needle and the negative conductive needle installed on the mounting surface are respectively arranged on both sides of the edge of the electrode strip. In addition, because the positive pole of the power supply is electrically connected to the positive conductive needle, and the negative pole of the power supply is electrically connected to the negative conductive needle, a deburring arc can be formed between the positive conductive needle and the negative conductive needle. The deburring arc contacts the edge of the electrode strip during the flow process, so that the burrs on the edge of the electrode strip can be ignited and removed. In this process, there is less contact with the electrode strip, thereby reducing the situation of active material coated on the electrode strip falling off, and the distribution uniformity of the active material on the electrode strip will not produce a large difference, so that the quality consistency of the battery processed by the electrode strip is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A longitudinal cross-sectional structural diagram of a pole piece strip deburring device according to an embodiment of the present disclosure;

[0028] Figure 2 for Figure 1 The transverse cross-sectional structural diagram of the pole piece strip deburring device shown;

[0029] Figure 3 for Figure 1 A partial enlarged view shown in the middle A;

[0030] Figure 4 for Figure 2 A partial enlarged view shown at B in the middle;

[0031] Figure 5 for Figure 2 The partial enlarged view shown at C in the middle;

[0032] Figure 6 It is a cross-sectional structural diagram of a pole piece strip deburring device according to another embodiment of the present disclosure;

[0033] Figure 7 It is a structural schematic diagram of a pole piece trimming device according to another embodiment of the present disclosure;

[0034] Figure 8 The present invention is a flow chart of a pole piece deburring method according to another embodiment of the present invention.

[0035] Reference numerals: 10, pole piece trimming device; 100, pole piece strip deburring device; 110, housing; 1101, strip inlet; 1102, strip outlet; 1110, guide rail; 1120, exhaust pipe; 1103, slag outlet; 120, burr removal assembly; 1210, insulating bracket; 1211, positive conductive piece; 1212, negative conductive piece; 1213, edge sweeping brush; 1201, brush handle; 1011, jacket; 1202, brush hair; 1203, Lifting slide hole; 1214, mounting surface; 1204, insulating edge; 1220, positive conductive needle; 1230, negative conductive needle; 1240, power supply; 130, suction cleaning assembly; 1310, smoke treatment box; 1320, negative pressure box; 1321, first air inlet pipe; 1322, second air inlet pipe; 140, clamping roller; 1410, glue area; 150, hollow shaft; 200, frame; 300, cutter assembly; 20, pole piece strip; 30, dilute sulfuric acid liquid level. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0040] like Figures 1 to 3As shown, a pole piece strip deburring device 100 of an embodiment includes a box body 110 and a burr removal assembly 120; the box body 110 is used to be installed on a frame 200, and a strip inlet 1101 and a strip outlet 1102 are formed on the box body 110 respectively; the strip inlet 1101 is connected to the strip outlet 1102 through the inner cavity of the box body 110, and a feeding channel is formed; the feeding channel is used to pass the pole piece strip 20; the burr removal assembly 120 is installed in the box body 110 and is arranged close to the edge of the pole piece strip 20; the burr removal assembly 120 includes an insulating bracket 1210, a positive conductive needle 1220, a negative conductive needle 1230 and The power supply 1240 and the insulating support 1210 have a mounting surface 1214, and the mounting surface 1214 faces the edge of the electrode strip 20; the positive conductive needle 1220 and the negative conductive needle 1230 are installed on the mounting surface 1214 at intervals, and are respectively arranged on both sides of the edge of the electrode strip 20; the power supply 1240 is arranged on the insulating support 1210, and the positive electrode of the power supply 1240 is electrically connected to the positive conductive needle 1220, and the negative electrode of the power supply 1240 is electrically connected to the negative conductive needle 1230, so that a deburring arc is formed between the positive conductive needle 1220 and the negative conductive needle 1230, and the deburring arc is used to ignite and remove the burrs on the edge of the electrode strip 20. Among them, the power supply 1240 can be an electrostatic generator, which is not limited here.

[0041] It can be understood that since the material strip inlet 1101 is connected to the material strip outlet 1102 through the inner cavity of the box body 110 to form a feeding channel, after the edge of the pole piece material strip 20 is cut, the pole piece material strip 20 is passed through the feeding channel. At this time, since the burr removal component 120 is arranged close to the edge of the pole piece material strip 20, the mounting surface 1214 faces the edge of the pole piece material strip 20, so that the positive conductive needle 1220 and the negative conductive needle 1230 installed on the mounting surface 1214 are respectively arranged on both sides of the edge of the pole piece material strip 20. Because the positive pole of the power source 1240 is electrically connected to the positive conductive needle 1220, and the negative pole of the power source 1240 is electrically connected to the negative conductive needle 1230, a deburring arc can be formed between the positive conductive needle 1220 and the negative conductive needle 1230. The deburring arc contacts the edge of the pole piece strip 20 during the flow process, so that the burrs on the edge of the pole piece strip 20 can be ignited and removed. In this process, there is less contact with the pole piece strip 20, thereby reducing the falling of the active material coated on the pole piece strip 20, and the distribution uniformity of the active material on the pole piece strip 20 will not produce a large difference, so that the quality consistency of the batteries processed by the pole piece strip 20 is better.

[0042] Combination Figure 3As shown, in one embodiment, the number of positive conductive needles 1220 and negative conductive needles 1230 are both multiple, and multiple positive conductive needles 1220 are arranged side by side on the first side of the edge of the pole piece material strip 20, and multiple negative conductive needles 1230 are arranged side by side on the second side of the edge of the pole piece material strip 20, and each positive conductive needle 1220 is respectively arranged corresponding to a negative conductive needle 1230. It can be understood that since multiple positive conductive needles 1220 are arranged side by side on the first side of the edge of the pole piece material strip 20, and multiple negative conductive needles 1230 are arranged side by side on the second side of the edge of the pole piece material strip 20, burr arcs can be formed respectively between the positive conductive needles 1220 and the negative conductive needles 1230 at corresponding positions, and multiple burr arcs act on the corresponding positions on the edge of the pole piece material strip 20 respectively, so that the efficiency of removing burrs on the edge of the material strip can be improved.

[0043] Combination Figure 3 and Figure 4 As shown, in one embodiment, the insulating bracket 1210 is further provided with a positive conductive sheet 1211, which is electrically connected to the positive electrode of the power source 1240; a plurality of positive conductive needles 1220 are embedded in the insulating bracket 1210 and are all in contact with the positive conductive sheet 1211. It can be understood that since the plurality of positive conductive needles 1220 are embedded in the insulating bracket 1210 and are in contact with the positive conductive sheet 1211, and the positive conductive sheet 1211 is electrically connected to the positive electrode of the power source 1240, the plurality of positive conductive needles 1220 can be simultaneously connected to the positive electrode of the power source 1240 through the positive conductive sheet 1211, so that the positive conductive needles 1220 can be used synchronously.

[0044] Combination Figure 3 and Figure 4 As shown, in one embodiment, the insulating bracket 1210 is further provided with a negative conductive sheet 1212, which is electrically connected to the negative electrode of the power source 1240; a plurality of negative conductive needles 1230 are embedded in the insulating bracket 1210 and are all in contact with the negative conductive sheet 1212. It can be understood that since the plurality of negative conductive needles 1230 are embedded in the insulating bracket 1210 and are in contact with the negative conductive sheet 1212, and the negative conductive sheet 1212 is electrically connected to the negative electrode of the power source 1240, the plurality of negative conductive needles 1230 can be simultaneously connected to the negative electrode of the power source 1240 through the negative conductive sheet 1212, so that the negative conductive needles 1230 can be used synchronously.

[0045] Combination Figure 4As shown, in one embodiment, a guide rail 1110 is provided on the inner wall of the box body 110, and the guide rail 1110 extends toward the edge of the pole piece strip 20, and the insulating bracket 1210 is slidably mounted on the guide rail 1110. It can be understood that since the insulating bracket 1210 is slidably mounted on the guide rail 1110, and the guide rail 1110 extends toward the edge of the pole piece strip 20, the insulating bracket 1210 can drive the positive conductive needle 1220 and the negative conductive needle 1230 to approach the edge of the pole piece strip 20, so that different models of pole piece strips 20 can be adapted.

[0046] Combination Figure 5 As shown, in one embodiment, a sweeping brush 1213 is further provided on the insulating bracket 1210, and the mounting surface 1214 and the sweeping brush 1213 are sequentially arranged along the moving direction of the pole piece material strip 20; the bristles 1202 of the sweeping brush 1213 are used to slide against the edge of the pole piece material strip 20. It can be understood that since the mounting surface 1214 and the sweeping brush 1213 are sequentially arranged along the moving direction of the pole piece material strip 20, the bristles 1202 of the sweeping brush 1213 slide against the edge of the pole piece material strip 20, and when a deburring arc is formed between the positive conductive needle 1220 and the negative conductive needle 1230 on the mounting surface 1214 to ignite and remove the burrs on the edge of the pole piece material strip 20, the bristles 1202 of the sweeping brush 1213 can be pressed against the edge of the pole piece material strip 20, thereby further cleaning the edge of the pole piece material strip 20. At the same time, if an open flame is formed on the edge of the pole piece material strip 20, it can also be extinguished by the edge sweeping brush 1213, thereby increasing the safety of use.

[0047] Combination Figure 5 As shown, in one embodiment, the edge sweeping brush 1213 includes a brush handle 1201 and bristles 1202, the bristles 1202 are arranged on the brush handle 1201, and a lifting slide hole 1203 is provided on the insulating bracket 1210, and the lifting slide hole 1203 extends vertically in an oval shape; the brush handle 1201 is slidably arranged in the lifting slide hole 1203, and the positions on both sides of the lifting slide hole 1203 on the brush handle 1201 are respectively threaded with sleeves 1011, and the two sleeves 1011 are clamped on the insulating bracket 1210. It can be understood that, since the brush handle 1201 is slidably disposed in the lifting slide hole 1203, the brush handle 1201 can slide in the lifting slide hole 1203 along the axial direction, and since the lifting slide hole 1203 extends vertically in an oval shape, the brush handle 1201 can be lifted and lowered in the lifting slide hole 1203 along the radial direction, so that the edge-sweeping brush 1213 can be synchronously adjusted in the axial and radial directions to adapt to the position of the edge of the pole piece strip 20. In addition, since the positions on both sides of the lifting slide hole 1203 on the brush handle 1201 are respectively threadedly screwed with the clamping sleeves 1011, when the position of the brush handle 1201 is adjusted to the right position, the clamping sleeves 1011 can be twisted so that the two clamping sleeves 1011 can clamp the insulating bracket 1210 together to fix the position of the edge-sweeping brush 1213.

[0048] In another embodiment, the brush handle 1201 is used to be connected to the rotating shaft of the brush motor so that the bristles 1202 can be rotated through the brush handle 1201, thereby realizing automatic control, higher working efficiency, and more convenient use.

[0049] Generally, after the burrs on the edge of the pole piece strip 20 are ignited by the deburring arc, smoke and dust will be generated in the box 110 . The smoke and dust are easily adsorbed on the surface of the pole piece strip 20 , thereby affecting the quality of the pole piece strip 20 .

[0050] Combination Figure 6 As shown, in order to solve the above-mentioned problem, in one embodiment, the electrode material strip deburring device 100 also includes a suction cleaning component 130, and the suction cleaning component 130 includes a smoke treatment box 1310 and a negative pressure box 1320, and the smoke treatment box 1310 is used to contain dilute sulfuric acid; the first air inlet pipe 1321 of the negative pressure box 1320 is connected to the smoke treatment box 1310, and is located above the dilute sulfuric acid liquid level 30; the box body 110 is provided with an exhaust pipe 1120, the first end of the exhaust pipe 1120 is connected to the inner cavity of the box body 110, and the second end of the exhaust pipe 1120 is connected to the smoke treatment box 1310, and extends to below the dilute sulfuric acid liquid level 30. It can be understood that since the first air inlet pipe 1321 of the negative pressure box 1320 is connected to the smoke treatment box 1310 and is located above the dilute sulfuric acid liquid level 30, while the deburring arc burns the burrs on the edge of the electrode strip 20, the negative pressure box 1320 is started so that the first air inlet pipe 1321 of the negative pressure box 1320 draws out the gas in the smoke treatment box 1310, and a negative pressure is formed in the smoke treatment box 1310. Because the first end of the exhaust pipe 1120 is connected to the inner cavity of the box body 110, and the second end of the exhaust pipe 1120 is connected to the smoke treatment box 1310 and extends below the dilute sulfuric acid liquid level 30, the exhaust pipe 1120 sucks the smoke in the inner cavity of the box body 110 under the action of negative pressure, and the smoke enters the dilute sulfuric acid through the exhaust pipe 1120 and can be quickly disposed of, thereby reducing the impact of the smoke on the electrode strip 20.

[0051] In one embodiment, in the smoke treatment box 1310, the second end of the exhaust pipe 1120 is provided with a plurality of one-way air holes on the pipe wall located above the dilute sulfuric acid liquid level 30, and the plurality of one-way air holes are connected to the first air inlet pipe 1321 of the negative pressure box 1320 through the inner cavity of the smoke treatment box 1310. It can be understood that since the plurality of one-way air holes on the exhaust pipe 1120 are connected to the first air inlet pipe 1321 of the negative pressure box 1320 through the inner cavity of the smoke treatment box 1310, after the negative pressure box 1320 is started, the first air inlet pipe 1321 of the negative pressure box 1320 can suck the exhaust pipe 1120 through the plurality of one-way air holes, accelerate the formation of negative pressure in the exhaust pipe 1120 to suck the smoke in the inner cavity of the box body 110, and at this time, the smoke will be mainly introduced into the dilute sulfuric acid through the second end of the exhaust pipe 1120 to be removed. In another embodiment, the one-way air hole can be replaced by a one-way air valve, which is of course not limited here.

[0052] Typically, burrs on the edge of some electrode strips 20 may form ash after burning. When the edge-sweeping brush 1213 is pressed against the edge of the electrode strip 20 for cleaning, the ash will fall to the bottom of the inner cavity of the box 110. If a large amount of ash is accumulated, it will easily affect the transportation of the edge of the strip.

[0053] Combination Figure 6 As shown, in order to solve the above problem, in one embodiment, a slag discharge port 1103 is provided at the bottom of the inner cavity of the box body 110, and the slag discharge port 1103 is connected to the first end of the exhaust pipe 1120, and the slag discharge port 1103 faces the position where the edge of the pole piece material strip 20 abuts against the bristles 1202 of the edge sweeping brush 1213. It can be understood that since the slag discharge port 1103 faces the position where the edge of the pole piece material strip 20 abuts against the bristles 1202 of the edge sweeping brush 1213, when the edge sweeping brush 1213 abuts against the edge of the clean pole piece material strip 20, the ash can directly fall into the slag discharge port 1103, and enter the dilute sulfuric acid with the suction effect of the exhaust pipe 1120 to be quickly disposed of.

[0054] Generally, when the exhaust pipe 1120 performs suction on the inner cavity of the box body 110 , the pole piece strip 20 is also easily displaced by the suction, which may cause the pole piece strip 20 to be skewed, thereby affecting the transmission of the pole piece strip 20 .

[0055] Combination Figure 6As shown, in order to solve the above problems, in one of the embodiments, the box body 110 is provided with a pair of clamping rollers 140 at the material belt inlet 1101; the two clamping rollers 140 are rotatably connected to the box body 110 through hollow shafts 150 respectively, and the gap between the two clamping rollers 140 is connected to the material belt inlet 1101; a plurality of air holes are opened on the outer surface of each clamping roller 140, and the plurality of air holes are connected to the hollow shaft 150, and the hollow shaft 150 is connected to the second air inlet pipe 1322 of the negative pressure box 1320. It can be understood that the several air holes on the outer surface of each clamping roller 140 are connected to the second air inlet pipe 1322 of the negative pressure box 1320 through the hollow shaft 150. When the negative pressure box 1320 is started, the second air inlet pipe 1322 of the negative pressure box 1320 can suck the pole piece material strip 20 in the material strip inlet 1101 through the air holes on the outer surface of each clamping roller 140, so that the pole piece material strip 20 is clamped by the clamping roller 140, thereby offsetting the suction effect of the exhaust pipe 1120 and reducing the displacement of the pole piece material strip 20.

[0056] Generally, since the edge of the pole piece strip 20 is subjected to changing forces during the cutting process, the direction of the burr of the pole piece strip 20 changes greatly. If the burr is in a state of being attached to the edge of the pole piece strip 20, it is difficult for the burr arc to act on the burr.

[0057] Combination Figure 3 and Figure 6 As shown, in order to improve the burr removal effect, in one embodiment, each clamping roller 140 is provided with an adhesive area 1410 at a position corresponding to the edge of the pole piece material strip 20, and the adhesive area 1410 is used to stick to the burrs on the edge of the pole piece material strip 20. It can be understood that because each clamping roller 140 is provided with an adhesive area 1410 at a position corresponding to the edge of the pole piece material strip 20, when the pole piece material strip 20 passes through the material strip inlet 1101, the adhesive area 1410 of each clamping roller 140 can stick to the burrs on the edge of the pole piece material strip 20, and pull up the burrs on the edge of the pole piece material strip 20 as the pole piece material strip 20 moves, thereby reducing the state of the burrs sticking to the edge of the pole piece material strip 20, and finally improving the burr removal efficiency.

[0058] Combination Figure 3 and Figure 4As shown, in one embodiment, an insulating rim 1204 is provided at the edge of the mounting surface 1214; the tip of the positive conductive needle 1220 extends out of the insulating rim 1204 and is close to the first side of the edge of the pole piece strip 20; the tip of the negative conductive needle 1230 extends out of the insulating rim 1204 and is close to the second side of the edge of the pole piece strip 20. It can be understood that by providing the insulating rim 1204 at the edge of the mounting surface 1214, the protection of the positive conductive needle 1220 and the negative conductive needle 1230 on the mounting surface 1214 can be enhanced. At the same time, since the tip of the positive conductive needle 1220 is close to the first side of the edge of the pole piece strip 20 and the tip of the negative conductive needle 1230 is close to the second side of the edge of the pole piece strip 20, the deburring arc formed between the tip of the positive conductive needle 1220 and the tip of the negative conductive needle 1230 can ignite and remove the burrs on the edge of the pole piece strip 20.

[0059] In one embodiment, the electrical connection may be in various forms such as wired connection, wireless connection, etc. It is understood that the wired connection may be a wire connection or a circuit board connection, etc., and the wireless connection may be a Bluetooth connection or a WIFI (Wireless Fidelity) connection, etc. The specific connection method is not limited, and those skilled in the art may also adjust it as needed.

[0060] Combination Figure 7 As shown, the present disclosure further provides a pole piece trimming device 10, comprising a frame 200, a cutter assembly 300 and a pole piece strip deburring device 100 of any of the above embodiments; the cutter assembly 300 and the box 110 are both mounted on the frame 200, the cutter assembly 300 and the box 110 are sequentially arranged along the moving direction of the pole piece strip 20, and the cutter assembly 300 is used to cut the edge of the pole piece strip 20. It can be understood that since the cutter assembly 300 and the box 110 are sequentially arranged along the moving direction of the pole piece strip 20, after the cutter assembly 300 cuts off the edge of the pole piece strip 20, the pole piece strip deburring device 100 can be used to process the new edge of the pole piece strip 20 so as to quickly remove the burrs.

[0061] Please also read Figure 1 , Figure 3 and Figure 8 As shown, the present disclosure also provides a pole piece deburring method, which is performed by using the pole piece material deburring device 100 of any of the above embodiments, and includes the following steps:

[0062] SI: Get the pole piece strip 20 and pass the pole piece strip 20 through the feeding channel. It can be understood that by allowing the pole piece strip 20 to enter the inner cavity of the box 110 from the strip inlet 1101 and then pass the pole piece strip 20 out from the strip outlet 1102, the pole piece strip 20 can be smoothly passed through the feeding channel.

[0063] SII: driving the pole piece strip 20 to move intermittently in the feeding channel. It can be understood that by driving the pole piece strip 20 to move intermittently in the feeding channel, it is possible to avoid the pole piece strip 20 moving too fast, and the deburring arc formed between the positive conductive needle 1220 and the negative conductive needle 1230 is difficult to act smoothly on the edge of the pole piece strip 20.

[0064] SIII: When the pole piece material strip 20 moves, turn off the power supply 1240 to cut off the power supply to the positive conductive needle 1220 and the negative conductive needle 1230. It can be understood that when the pole piece material strip 20 moves, by disconnecting the power supply 1240, the positive conductive needle 1220 can be disconnected from the positive pole of the power supply 1240, and the negative conductive needle 1230 can be disconnected from the negative pole of the power supply 1240. At this time, no deburring arc will be generated between the positive conductive needle 1220 and the negative conductive needle 1230, so that the pole piece material strip 20 can be driven to move, so that the edge of the pole piece material strip 20 can gradually pass through the positive conductive needle 1220 and the negative conductive needle 1230.

[0065] SIV: When the pole piece material strip 20 is stationary, the power supply 1240 is started to energize the positive conductive needle 1220 and the negative conductive needle 1230. It can be understood that when the pole piece material strip 20 is stationary, by starting the power supply 1240, the positive conductive needle 1220 can be connected to the positive electrode of the power supply 1240, and the negative conductive needle 1230 can be connected to the negative electrode of the power supply 1240. At this time, a deburring arc is generated between the positive conductive needle 1220 and the negative conductive needle 1230, and the deburring arc can ignite and remove the burrs on the edge of the pole piece material strip 20.

[0066] In this embodiment, by driving the electrode strip 20 to move intermittently in the feeding channel, when the electrode strip 20 moves, by disconnecting the power supply 1240, the positive conductive needle 1220 can be disconnected from the positive pole of the power supply 1240, and the negative conductive needle 1230 can be disconnected from the negative pole of the power supply 1240. At this time, no deburring arc will be generated between the positive conductive needle 1220 and the negative conductive needle 1230, and the edge of the electrode strip 20 can gradually pass through the positive conductive needle 1220 and the negative conductive needle 1230. Electric needle 1230, and when the pole piece material strip 20 is stationary, by starting the power supply 1240, the positive conductive needle 1220 can be kept connected with the positive pole of the power supply 1240, and the negative conductive needle 1230 can be kept connected with the negative pole of the power supply 1240. At this time, a deburring arc is generated between the positive conductive needle 1220 and the negative conductive needle 1230. The deburring arc can smoothly ignite the burrs on the edge of the pole piece material strip 20, and remove the burrs as the pole piece material strip 20 gradually moves forward.

[0067] Compared with the prior art, the present invention has at least the following advantages:

[0068] The above-mentioned pole piece material strip deburring device 100, since the material strip inlet 1101 is connected to the material strip outlet 1102 through the inner cavity of the box body 110 to form a feeding channel, after the edge of the pole piece material strip 20 is cut, the pole piece material strip 20 is passed through the feeding channel. At this time, since the burr removal component 120 is arranged close to the edge of the pole piece material strip 20, the mounting surface 1214 faces the edge of the pole piece material strip 20, so that the positive conductive needle 1220 and the negative conductive needle 1230 installed on the mounting surface 1214 are respectively arranged on both sides of the edge of the pole piece material strip 20. Because the positive pole of the power source 1240 is electrically connected to the positive conductive needle 1220, and the negative pole of the power source 1240 is electrically connected to the negative conductive needle 1230, a deburring arc can be formed between the positive conductive needle 1220 and the negative conductive needle 1230. The deburring arc contacts the edge of the pole piece strip 20 during the flow process, so that the burrs on the edge of the pole piece strip 20 can be ignited and removed. In this process, there is less contact with the pole piece strip 20, thereby reducing the falling of the active material coated on the pole piece strip 20, and the distribution uniformity of the active material on the pole piece strip 20 will not produce a large difference, so that the quality consistency of the batteries processed by the pole piece strip 20 is better.

[0069] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the attached claims.

Claims

1. A deburring device for a pole piece, characterized in that: include: A box body, the box body is used to be installed on the frame, and a material belt inlet and a material belt outlet are respectively formed on the box body; The material strip inlet is connected to the material strip outlet through the inner cavity of the box body, and a feeding channel is formed; the feeding channel is used to pass the electrode strip; and A burr removal component, which is installed in a box and is arranged close to the edge of the pole piece strip; the burr removal component includes an insulating bracket, a positive conductive needle, a negative conductive needle and a power supply, the insulating bracket has a mounting surface, and the mounting surface faces the edge of the pole piece strip; the positive conductive needle and the negative conductive needle are installed on the mounting surface at intervals and are respectively arranged on both sides of the edge of the pole piece strip; the power supply is arranged on the insulating bracket, the positive pole of the power supply is electrically connected to the positive conductive needle, and the negative pole of the power supply is electrically connected to the negative conductive needle, so that a deburring arc is formed between the positive conductive needle and the negative conductive needle, and the deburring arc is used to ignite and remove burrs on the edge of the pole piece strip.

2. The electrode strip deburring device according to claim 1, characterized in that: The number of the positive conductive needles and the number of the negative conductive needles are both multiple, and the multiple positive conductive needles are arranged side by side on the first side of the edge of the pole piece strip, and the multiple negative conductive needles are arranged side by side on the second side of the edge of the pole piece strip, and each of the positive conductive needles is arranged corresponding to one of the negative conductive needles.

3. The electrode strip deburring device according to claim 2, characterized in that: The insulating bracket is also provided with a positive conductive piece, and the positive conductive piece is electrically connected to the positive pole of the power supply; a plurality of positive conductive needles are embedded in the insulating bracket and are all in contact with the positive conductive piece.

4. The electrode strip deburring device according to claim 2, characterized in that: The insulating bracket is also provided with a negative conductive sheet, which is electrically connected to the negative pole of the power source; a plurality of negative conductive needles are embedded in the insulating bracket and are all in contact with the negative conductive sheet.

5. The electrode strip deburring device according to claim 1, characterized in that: A guide rail is provided on the inner cavity wall of the box body, the guide rail extends toward the edge of the pole piece strip, and the insulating bracket is slidably mounted on the guide rail.

6. The electrode strip deburring device according to claim 1, characterized in that: The insulating bracket is also provided with a sweeping brush, and the mounting surface and the sweeping brush are sequentially arranged along the moving direction of the pole piece strip; the bristles of the sweeping brush are used to slide against the edge of the pole piece strip.

7. The electrode strip deburring device according to claim 6, characterized in that: The edge sweeping brush includes a brush handle and bristles, the bristles are arranged on the brush handle, and the insulating bracket is provided with a lifting slide hole, the lifting slide hole extends vertically and is oval in shape; the brush handle is slidably arranged in the lifting slide hole, and the positions on the brush handle located on both sides of the lifting slide hole are respectively threaded with sleeves, and the two sleeves are clamped on the insulating bracket.

8. The electrode strip deburring device according to claim 1, characterized in that: The edge of the mounting surface is provided with an insulating border; the tip of the positive conductive needle extends out of the insulating border and is close to the first side of the edge of the pole piece strip; the tip of the negative conductive needle extends out of the insulating border and is close to the second side of the edge of the pole piece strip.

9. A pole piece trimming device, characterized in that: It comprises a frame, a cutter assembly and a pole piece strip deburring device as claimed in any one of claims 1 to 8; the cutter assembly and the box body are both mounted on the frame, the cutter assembly and the box body are arranged in sequence along the moving direction of the pole piece strip, and the cutter assembly is used to cut the edge of the pole piece strip.

10. A method for removing burrs from a pole piece, characterized in that: The method is performed by using the pole piece strip deburring device according to any one of claims 1 to 8, comprising the following: Obtaining a pole piece material strip, and passing the pole piece material strip through the feeding channel; Driving the pole piece strip to move intermittently in the feeding channel; When the electrode strip moves, the power supply is turned off to cut off the power to the positive conductive needle and the negative conductive needle; When the pole piece strip is stationary, the power source is activated to energize the positive conductive needle and the negative conductive needle.

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