Novel pole piece and pole lug smoothing mechanism

Abstract

The utility model provides a novel pole piece and pole lug smoothing mechanism, relates to the technical field of battery production, and aims to solve the problems that when an existing winding machine is used for winding a battery cell, a winding needle rotates quickly, the pole lug collides with a smoothing plate, so that the battery cell is folded, broken and the like, and the battery cell is scrapped. The winding needle is used for winding a cathode pole piece and an anode pole piece at the same time, the first flattening assembly and the second flattening assembly are used for flattening the two pole pieces and playing a guiding role, and the adjusting assembly is used for adjusting the gap between the first flattening assembly and the winding needle and the gap between the second flattening assembly and the winding needle. The beneficial effects of the utility model are that two pole pieces of a cathode and an anode can be guided at the same time, tabs are smoothed, and the yield is ensured; adjustment can be conveniently carried out, and the winding requirements of different pole pieces are met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a novel pole piece and pole ear smoothing mechanism. Background Art

[0002] In the current winding machine, the tab comforting plate at the winding needle position is only a thin, flat plate. When the battery cell is wound, the winding needle rotates quickly, and the tab collides with the comforting plate, causing defects such as folding and cracking, resulting in the scrapping of the battery cell. Utility Model Content

[0003] The utility model aims to solve the problem that when the existing winding machine winds the battery core, the winding needle rotates quickly and the pole ear collides with the smoothing plate, which may cause defects such as folding and cracking, resulting in the battery core being scrapped.

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

[0005] A novel electrode tab smoothing mechanism, characterized in that it comprises a winding needle for winding the cathode electrode sheet and the anode electrode sheet at the same time, a first smoothing component and a second smoothing component for smoothing the two electrode sheets and playing a guiding role, and an adjusting component for adjusting the gap between the first smoothing component and the second smoothing component and the winding needle;

[0006] The first smoothing component includes a first straight plate and a first curved plate, wherein the first straight plate is a flat plate and is located on one side of the winding needle and is parallel to the axis of the winding needle, and the first curved plate is an arc-shaped plate and is connected to one end of the first straight plate and is curved toward the winding needle, and there is a gap between the first straight plate and the first curved plate and the winding needle for the pole piece to pass through;

[0007] The second smoothing component includes a second straight plate and a second curved plate, the second straight plate is a flat plate and is located between the winding needle and the first straight plate and is parallel to the axis of the winding needle, the second curved plate is an arc-shaped plate and is connected to an end of the second straight plate away from the first straight plate and is bent in the opposite direction toward the winding needle, there is a gap between the second straight plate and the second curved plate and the winding needle for the pole piece to pass through, the second straight plate facing the first straight plate is detachably mounted on the two side walls of the first straight plate at both ends, and there is a gap between the first straight plate and the second straight plate for the pole piece to pass through;

[0008] The adjusting assembly comprises a connecting rod with one end connected to the other end of the first straight plate, and the other end of the connecting rod is connected to the push rod of the cylinder through a cylinder connecting head.

[0009] A further improvement is that the curvature of the first curved plate is concentric with the winding needle.

[0010] A further improvement is that the angle between the second flat plate and the plane of the first flat plate is 30°-60°.

[0011] A further improvement is that: the other end of the first straight plate is connected to a third curved plate, the third curved plate bends in the opposite direction of the first curved plate and then extends in the direction of the third curved plate, the extension portion of the third curved plate is parallel to the first straight plate, and the connecting rod is connected between the extension portions of the first straight plate and the third curved plate.

[0012] Further improvements are: second connecting plates are connected to both side walls of the second straight plate, the second connecting plates extend toward the first connecting plates, first connecting plates are connected to both sides of the first straight plate, the first connecting plates extend away from the second straight plates, a plurality of bolt fixing holes are provided on the first connecting plate, the plurality of bolt fixing holes are evenly spaced along the length direction of the first straight plate, at least one bolt adjustment slot is provided on the second connecting plate, and the first connecting plate and the second connecting plate are connected by bolts and nuts cooperating with the bolt adjustment slots and the bolt fixing holes.

[0013] Compared with the existing technology, the above technical solution has the following beneficial effects:

[0014] It can guide and smooth the tabs of both cathode and anode poles at the same time, and ensure that the tabs will not fold or break when the winding machine is winding quickly, thereby reducing waste and costs; it can be easily adjusted to meet the winding needs of poles of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the mechanism when the utility model is used.

[0019] Explanation of the accompanying drawings: first straight plate 1, first curved plate 2, second straight plate 3, second curved plate 31, second connecting plate 32, bolt adjustment slot 33, first connecting plate 4, bolt fixing hole 41, bolt 5, nut 51, third curved plate 6, connecting rod 7, cylinder connecting head 8, pole piece 9, winding needle 10. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 3 As shown, the technical solution adopted in this specific embodiment is: a new type of pole piece and pole ear smoothing mechanism, including a winding needle 10 for winding the cathode pole piece and the anode pole piece at the same time, a first smoothing component and a second smoothing component for smoothing the two pole pieces and playing a guiding role, and an adjusting component for adjusting the gap between the first smoothing component and the second smoothing component and the winding needle 10;

[0021] The first smoothing component includes a first straight plate 1 and a first curved plate 2. The first straight plate 1 is a flat plate and is located on one side of the winding needle 10 and is parallel to the axis of the winding needle 10. The first curved plate 2 is an arc-shaped plate and is connected to one end of the first straight plate 1 and is curved toward the winding needle 10. There is a gap between the first straight plate 1 and the first curved plate 2 and the winding needle 10 for the pole piece to pass through.

[0022] The second smoothing component includes a second straight plate 3 and a second curved plate 31, the second straight plate 3 is a flat plate and is located between the winding needle 10 and the first straight plate 1 and is parallel to the axis of the winding needle 10, the second curved plate 31 is an arc-shaped plate and is connected to an end of the second straight plate 3 away from the first straight plate 1 and is bent in the opposite direction toward the winding needle 10, there is a gap between the second straight plate 3 and the second curved plate 31 and the winding needle 10 for the pole piece to pass through, the second straight plate 3 is detachably mounted on the two side walls of the first straight plate 1 on one side facing the first straight plate 1, and there is a gap between the first straight plate 1 and the second straight plate 3 for the pole piece to pass through;

[0023] The adjusting assembly comprises a connecting rod 7 with one end connected to the other end of the first straight plate 1 , and the other end of the connecting rod 7 is connected to the push rod of the cylinder through a cylinder connector 8 .

[0024] Wherein, the curvature of the first curved plate is kept concentric with the winding needle.

[0025] The angle between the second straight plate 3 and the plane of the first straight plate 1 is 30°-60°.

[0026] Among them, the other end of the first straight plate 1 is connected to the third curved plate 6, and the third curved plate 6 extends toward the third curved plate 6 after being bent in the opposite direction toward the first curved plate 2. The extended portion of the third curved plate 6 is parallel to the first straight plate 1, and the connecting rod 7 is connected between the first straight plate 1 and the extended portion of the third curved plate 6.

[0027] Among them, the second straight plate 3 is connected to the second connecting plate 32 on both side walls, and the second connecting plate 32 extends toward the first connecting plate 4. The first straight plate 1 is connected to the first connecting plate 4 on both sides, and the first connecting plate 4 extends away from the second straight plate 3. The first connecting plate 4 is provided with a plurality of bolt fixing holes 41, and the plurality of bolt fixing holes 41 are evenly spaced along the length direction of the first straight plate 1. The second connecting plate 32 is provided with at least one bolt adjustment slot 33, and the first connecting plate 4 and the second connecting plate 32 are connected by the cooperation of bolts 5 and nuts 51 with the bolt adjustment slot 33 and the bolt fixing hole 41.

[0028] The working principle of the utility model is as follows: when in use, before the winding needle starts to wind, the thickness of the two pole pieces and the thickness of the pole ears thereon are first determined, and then according to the thickness, the push rod is extended through the cylinder action to drive the first smoothing component and the second smoothing component to move toward the winding needle and move to a suitable position to ensure that the gap between the first straight plate and the first curved plate and the winding needle and the gap between the second straight plate and the second curved plate and the winding needle can allow the corresponding pole pieces to pass through. The first smoothing mechanism and the second smoothing mechanism are detachably connected, and the connection position of the second straight plate on the first straight plate is adjusted according to the thickness of the corresponding pole piece and its pole ear passing through the first smoothing mechanism to ensure the pole piece. The gap between the second straight plate and the first straight plate can be used for convenient adjustment to meet the winding requirements of different types of pole pieces; then the winding needle is used to rotate rapidly to wind the two pole pieces, and the two pole pieces pass through the corresponding smoothing components, and the straight plate and the curved plate follow the winding outer layer of the winding needle to guide and smooth the pole ears of the cathode and anode pole pieces. When the winding machine winds quickly, it is ensured that the pole ears will not fold or break, thereby reducing the generation of waste and lowering costs; during the winding process, as the number of wound pole pieces increases, the distance between the winding needle and the smoothing mechanism decreases. At this time, the passing gap between the smoothing mechanism and the winding needle can be adjusted by contracting the telescopic rod of the cylinder.

[0029] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A novel pole piece and pole ear smoothing mechanism, characterized in that: It includes a winding needle for winding the cathode electrode sheet and the anode electrode sheet at the same time, a first smoothing component and a second smoothing component for smoothing the two electrode sheets and playing a guiding role, and an adjusting component for adjusting the gap between the first smoothing component and the second smoothing component and the winding needle; The first smoothing component includes a first straight plate and a first curved plate, wherein the first straight plate is a flat plate and is located on one side of the winding needle and is parallel to the axis of the winding needle, and the first curved plate is an arc-shaped plate and is connected to one end of the first straight plate and is curved toward the winding needle, and there is a gap between the first straight plate and the first curved plate and the winding needle for the pole piece to pass through; The second smoothing component includes a second straight plate and a second curved plate, the second straight plate is a flat plate and is located between the winding needle and the first straight plate and is parallel to the axis of the winding needle, the second curved plate is an arc-shaped plate and is connected to an end of the second straight plate away from the first straight plate and is bent in the opposite direction toward the winding needle, there is a gap between the second straight plate and the second curved plate and the winding needle for the pole piece to pass through, the second straight plate facing the first straight plate is detachably mounted on the two side walls of the first straight plate at both ends, and there is a gap between the first straight plate and the second straight plate for the pole piece to pass through; The adjusting assembly comprises a connecting rod with one end connected to the other end of the first straight plate, and the other end of the connecting rod is connected to the push rod of the cylinder through a cylinder connecting head.

2. A novel pole piece and pole tab smoothing mechanism according to claim 1, characterized in that: The curvature of the first curved plate is kept concentric with the winding needle.

3. The novel pole piece and pole tab smoothing mechanism according to claim 1 is characterized by: The angle between the second flat plate and the plane of the first flat plate is 30°-60°.

4. The novel pole piece and pole tab smoothing mechanism according to claim 1 is characterized in that: The other end of the first straight plate is connected to a third curved plate, the third curved plate bends in the opposite direction of the first curved plate and then extends in the direction of the third curved plate, the extension portion of the third curved plate is parallel to the first straight plate, and the connecting rod is connected between the extension portions of the first straight plate and the third curved plate.

5. The novel pole piece and tab smoothing mechanism according to claim 1 is characterized in that: The second straight plate is connected to the second connecting plate on both side walls, the second connecting plate extends toward the first connecting plate, the first straight plate is connected to the first connecting plate on both sides, the first connecting plate extends away from the second straight plate, a plurality of bolt fixing holes are provided on the first connecting plate, and the plurality of bolt fixing holes are evenly spaced along the length direction of the first straight plate, at least one bolt adjustment slot is provided on the second connecting plate, and the first connecting plate and the second connecting plate are connected by bolts and nuts cooperating with the bolt adjustment slot and the bolt fixing holes.

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