Laser die-cutting device and battery cell winding equipment

Abstract

The utility model discloses a laser die-cutting device and a battery core winding device, comprising: a cavity, an adsorption plate is arranged inside the cavity, and the adsorption plate is used to adsorb the pole piece; a conveyor belt, a part of which is located inside the cavity, and the conveyor belt is used to convey the pole piece from the adsorption plate to the outside of the cavity; a laser generator, and the laser generator is used to emit laser, and the laser is used to cut the pole ear on the pole piece; inside the cavity, there is a gap between the adsorption plate and the conveyor belt to form a laser cutting channel for the laser to pass through. The utility model has a simple structure and low cost.

Description

Technical Field

[0001] The utility model relates to the field of battery production equipment, in particular to a laser die-cutting device and a battery core winding device. Background Art

[0002] In the prior art, it is necessary to use laser to Figure 1 The pole piece 100 shown is laser cut along the dotted line to form a Figure 2 The pole piece 101 is shown, and the waste 102 cut off is collected. In the laser die-cutting process, the existing laser die-cutting device needs to use a double belt structure to convey the pole piece 100, one conveyor belt absorbs the pole piece 100, and the other conveyor belt absorbs the waste 102, which makes the structure complicated, and it is necessary to ensure that the speeds of the two conveyor belts are equal, and the debugging is complicated.

[0003] Therefore, it is necessary to improve the existing technology and provide a new laser die-cutting device and battery core winding equipment. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for a laser die cutting device and a battery core winding device.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the utility model, a laser die-cutting device is provided, comprising: a cavity, an adsorption plate is arranged inside the cavity, and the adsorption plate is used to adsorb the pole piece; a conveyor belt, a part of which is located in the cavity, and the conveyor belt is used to convey the pole piece from the adsorption plate to the outside of the cavity; a laser generator, which is used to emit laser, and the laser is used to cut pole ears on the pole piece; inside the cavity, there is a gap between the adsorption plate and the conveyor belt to form a laser cutting channel for the laser to pass through.

[0006] Optionally, inside the cavity, the adsorption plate and the conveyor belt are located on the same side of the pole piece.

[0007] Optionally, the adsorption plate and the laser generator are located on the same side of the pole piece.

[0008] Optionally, the cavity is equipped with a dust hood, and the dust hood is connected to a negative pressure extraction component to form a negative pressure in the cavity.

[0009] Optionally, the cavity includes a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are spaced apart to form a pole piece channel, one side of the first mounting seat and the second mounting seat is connected to the dust hood, and the other side of the first mounting seat and the second mounting seat is provided with a wind knife, the wind knife and the dust hood are located on opposite sides of the first mounting seat and the second mounting seat, and the wind knife is used to form an airflow and blow toward the dust hood.

[0010] Optionally, an air guide plate is further provided in the cavity, and the air guide plate is used to block the airflow formed by the wind knife from blowing toward the pole piece.

[0011] Optionally, in the pole piece conveying direction, a first pole piece roller is provided upstream of the cavity, and a second pole piece roller is provided downstream of the cavity, and a diameter of the second pole piece roller is greater than a diameter of the first pole piece roller.

[0012] Optionally, the cavity is movable along the first direction or the second direction, and / or is rotatable around the first direction, the second direction or a third direction, and the first direction, the second direction and the third direction intersect each other.

[0013] Optionally, the laser die-cutting device also includes a first mounting plate and a second mounting plate, the cavity is mounted on the first mounting plate, the first mounting plate is connected to the second mounting plate, the first mounting plate is provided with a plurality of first top screws, the first top screws abut against the second mounting plate, and the first top screws can be adjusted to allow the first mounting plate to rotate around the first direction and / or the second direction.

[0014] Optionally, the laser die-cutting device also includes a first mounting plate, a second mounting plate and a third mounting plate, the cavity is mounted on the first mounting plate, the first mounting plate is connected to the second mounting plate, the second mounting plate and the third mounting plate are rotatably matched to enable the second mounting plate to rotate around a third direction, and the second mounting plate is provided with fasteners to limit the rotation angle of the second mounting plate relative to the third mounting plate.

[0015] Optionally, the laser die-cutting device also includes a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the cavity is mounted on the first mounting plate, the first mounting plate is connected to the second mounting plate, the second mounting plate is connected to the third mounting plate, the third mounting plate is slidably matched with the fourth mounting plate, the fourth mounting plate is installed with an adjustment seat, the adjustment seat is provided with a first screw and a second screw, the first screw is threadedly matched with the third mounting plate to drive the third mounting plate to slide along the first direction, and the second screw abuts against the third mounting plate to limit the position of the third mounting plate in the first direction.

[0016] Optionally, the laser generator is slidably matched with the fourth mounting plate, and the fourth mounting plate is provided with a first direction adjustment mechanism, and the first direction adjustment mechanism is used to drive the laser generator to slide along a first direction to approach or move away from the cavity.

[0017] Optionally, the laser die-cutting device further comprises a first support, the first support slidably cooperates with the fourth mounting plate, the first support is provided with a second direction adjustment mechanism, and the second direction adjustment mechanism is used to drive the fourth mounting plate to slide along the second direction.

[0018] Optionally, the laser die-cutting device further comprises a second support, the second support is connected to the first mounting plate, the second support is equipped with a belt transmission mechanism, and the belt transmission mechanism is used to drive the transmission belt to move.

[0019] Optionally, the position of the second support relative to the first mounting plate along the first direction can be adjusted, the second support is provided with a plurality of second top screws, the second top screws abut against the first mounting plate, and the second top screws can be adjusted to allow the second support to rotate around the second direction.

[0020] According to a second aspect of the utility model, a battery core winding device is provided, comprising a laser die-cutting device as described in any one of the above items.

[0021] In the laser die-cutting device of this embodiment, since a part of the conveyor belt and the adsorption plate are both located in the cavity, and the two are spaced apart to form a laser cutting channel, the conveyor belt can not only convey the pole piece during the laser die-cutting process of the pole piece, but also take the waste out of the cavity. The structure is simple, and only one set of belt conveyor mechanism is used, which saves the number of motors and has low cost. In the battery cell winding equipment of this embodiment, after the pole piece is cut to form the pole ear, it can enter the next process for battery cell winding, and the structure is more compact and the production efficiency is high.

[0022] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0024] Figure 1 This is the front view of the pole piece before cutting.

[0025] Figure 2 This is the front view of the electrode after cutting.

[0026] Figure 3 It is a schematic diagram of the working principle of the laser die-cutting device of an embodiment of the utility model.

[0027] Figure 4 This is a three-dimensional diagram of a laser die-cutting device according to an embodiment of the utility model, in which some parts are omitted for clarity.

[0028] Figure 5 It is a top view of the cavity of an embodiment of the utility model.

[0029] Figure 6 It is a bottom view of the cavity of an embodiment of the utility model, showing a pole piece undergoing laser die cutting.

[0030] Figure 7 It is a three-dimensional diagram of the cavity and the belt transmission mechanism of the embodiment of the utility model.

[0031] Figure 8 This is a partial enlarged view of the laser die-cutting device of an embodiment of the utility model, in which some parts are omitted for clarity.

[0032] Description of reference numerals:

[0033] 100, pole piece; 101, pole ear; 102, waste material; 200, laser die-cutting device; 201, cavity; 202, adsorption plate; 203, conveyor belt; 204, laser generator; 205, laser; 206, laser cutting channel; 207, dust cover; 208, first mounting seat; 209, second mounting seat; 210, pole piece channel; 211, wind knife; 212, wind guide plate; 213, first pole piece roller; 214, second pole piece roller; 215, first mounting plate; 216, second mounting plate; 217, first top screw; 2 18. Third mounting plate; 219. Fastener; 220. Fourth mounting plate; 221. Adjustment seat; 222. First screw; 223. Second screw; 224. First direction adjustment mechanism; 225. First support; 226. Second direction adjustment mechanism; 227. Second support; 228. Belt transmission mechanism; 229. Second top screw; 230. Rotating shaft; 231. Guide plate; 232. Negative pressure extraction pipe; 233. Adapter; 234. Adapter block; 235. Waste collection pipe; 236. Opening; 237. Laser generator mounting plate. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] In the following description, “connection” may refer to a direct connection or an indirect connection via an adapter, an adapter block, etc.

[0040] In the following description, the pole piece 100 is only used to illustrate the working principle of the laser die-cutting device 200 and should not be regarded as a part of the laser die-cutting device 200 .

[0041] like Figure 3 As shown, the laser die-cutting device 200 in this embodiment includes: a cavity 201, a conveyor belt 203 and a laser generator 204. An adsorption plate 202 is arranged inside the cavity 201, and the adsorption plate 202 is used to adsorb the pole piece 100; a part of the conveyor belt 203 is located inside the cavity 201, and the conveyor belt 203 is used to transfer the pole piece 100 from the adsorption plate 202 to the outside of the cavity 201; the laser generator 204 is used to emit a laser 205, and the laser 205 is used to cut the pole piece 100 as shown in FIG. Figure 2 The pole ear 101 is shown. Inside the cavity 201, there is a gap between the adsorption plate 202 and the conveyor belt 203 to form a laser cutting channel 206 for the laser 205 to pass through.

[0042] More specifically, the cavity 201 is not a completely enclosed space, but may contain Figure 4The opening 236 shown is for the laser 205 emitted by the laser generator 204 to enter the cavity 201. There may also be a channel to allow the pole piece 100 to enter the cavity 201 or to be transmitted from the cavity 201 to the outside. The surface of the adsorption plate 202 is opened with a hole, and is connected to an external negative pressure pumping assembly (not shown) through a negative pressure pumping pipe 232, so that negative pressure is formed on the surface of the adsorption plate 202, and the pole piece 100 can be adsorbed by the adsorption plate 202 after entering the cavity 201. The conveyor belt 203 is driven by the belt conveyor mechanism 228, with a portion located inside the cavity 201 and a portion located outside the cavity 201. The surface of the conveyor belt 203 is opened with a hole, and a negative pressure is formed on the surface of the conveyor belt 203 through the negative pressure pumping assembly, so that the pole piece 100 can be adsorbed. After the pole piece 100 enters the cavity 201 from the outside, it first passes through the adsorption plate 202, then passes through the conveyor belt 203, and is then conveyed to the outside of the cavity 201 by the conveyor belt 203. The laser generator 204 is used to emit laser 205. After the laser 205 is focused on the pole piece 100, it moves along the following path: Figure 1 Cut along the dotted line shown in the figure to produce Figure 2 The pole ear 101 is shown. Inside the cavity 201, there is a gap between the adsorption plate 202 and the conveyor belt 203 to form a laser cutting channel 206 for the laser 205 to pass through. The laser 205 reaches the pole piece 100 through the laser cutting channel 206 and focuses on the pole piece 100 for cutting.

[0043] After the pole piece 100 enters the cavity 201 from the outside of the cavity 201, it first passes through the adsorption plate 202, and then the pole ear 101 is cut by the laser 205 at the laser cutting channel 206. Driven by the conveyor belt 203, the cut pole piece 100 is conveyed to the outside of the cavity 201, and the waste 102 is taken out by the conveyor belt 203 and finally falls into the waste collection pipe 235. With the movement of the conveyor belt 203, the uncut pole piece 100 continues to enter the cavity 201 and is laser die-cut. From the above process, it can be seen that in the laser die-cutting device in this embodiment, since a part of the conveyor belt 203 and the adsorption plate 202 are both located in the cavity 201, and the two are spaced apart to form a laser cutting channel 206, the conveyor belt 203 can not only convey the pole piece 100 during the laser die-cutting process of the pole piece 100, but also bring the waste material 102 out of the cavity 201. The structure is simple, and only one set of belt conveyor mechanism 228 is used, which saves the number of motors and has low cost.

[0044] like Figure 3 As shown, inside the cavity 201 , the adsorption plate 202 and the conveyor belt 203 are located on the same side of the pole piece 100 .

[0045] More specifically, in Figure 3In the first direction shown, the adsorption plate 202 and the conveyor belt 203 are located on the right side of the pole piece 100 (i.e., the side indicated by the arrow). This arrangement can ensure that the pole piece 100 is reliably adsorbed and prevent the pole piece 100 from falling off due to different adsorption directions of the adsorption plate 202 and the conveyor belt 203.

[0046] like Figure 3 As shown, the adsorption plate 202 and the laser generator 204 are located on the same side of the pole piece 100 .

[0047] More specifically, in Figure 3 In the first direction shown, the adsorption plate 202 and the laser generator 204 are located on the right side of the pole piece 100 (i.e., the side indicated by the arrow). This arrangement can ensure the focal position of the laser 205 on the pole piece 100, or ensure that the pole piece 100 is within the focal depth range of the laser 205.

[0048] like Figure 5 , Figure 6 and Figure 7 As shown, the cavity 201 is installed with a dust cover 207 , and the dust cover 207 is connected to a negative pressure extraction component (not shown in the figure) to form a negative pressure in the cavity 201 .

[0049] More specifically, the cavity 201 may include a first mounting seat 208 and a second mounting seat 209, or may be formed by a single box-type structure. The negative pressure formed in the cavity 201 is used to collect dust generated during the cutting of the pole piece 100 by the dust cover 207, thereby avoiding affecting the cutting work of the laser 205.

[0050] like Figures 5 to 7 As shown, in this embodiment, the cavity 201 includes a first mounting seat 208 and a second mounting seat 209. The first mounting seat 208 and the second mounting seat 209 are arranged at intervals to form a pole piece channel 210. One side of the first mounting seat 208 and the second mounting seat 209 is connected to the dust cover 207, and the other side of the first mounting seat 208 and the second mounting seat 209 is provided with a wind knife 211. The wind knife 211 and the dust cover 207 are located on the opposite side of the first mounting seat 208 and the second mounting seat 209. The wind knife 211 is used to form an airflow and blow it toward the dust cover 207.

[0051] More specifically, the first mounting seat 208 and the second mounting seat 209 are combined to form an open cavity 201. The first mounting seat 208 and the second mounting seat 209 are connected to the dust cover 207 on one side, so the dust cover 207 also serves as a connecting piece between the first mounting seat 208 and the second mounting seat 209. A wind knife 211 is provided on the other side of the first mounting seat 208 and the second mounting seat 209. The first mounting seat 208 and the second mounting seat 209 are spaced apart to form a pole piece channel 210, and the pole piece 100 enters the cavity 201 from the pole piece channel 210 for cutting, and after the cutting is completed, it is conveyed out of the cavity 201 by the conveyor belt 203 through the pole piece channel 210. In the example Figure 6 In the second direction shown, the wind knife 211 and the dust cover 207 are located on opposite sides of the first mounting seat 208 and the second mounting seat 209, so that the path of the airflow formed by the wind knife 211 to the dust cover 207 can completely cover the cutting position of the pole piece 100, thereby preventing the dust formed by the cutting from leaking out, and facilitating the dust collection by the dust cover 207. In this embodiment, there are two wind knives 211, one of which is arranged on the first mounting seat 208 and the other is arranged on the second mounting seat 209, so that the dust can be blown to the dust cover 207 on both sides of the pole piece 100. The specific number of wind knives 211 can be increased or decreased as needed.

[0052] like Figure 6 As shown, an air guide plate 212 is further provided in the cavity 201 , and the air guide plate 212 is used to block the airflow formed by the wind knife 211 from blowing toward the pole piece 100 .

[0053] In more detail, two air guide plates 212 are provided corresponding to the two wind knives 211, and the specific number of the air guide plates 212 can be increased or decreased with the number of the wind knives 211. The air guide plates 212 can change the flow direction of the airflow blown by the wind knives 211, thereby blocking the airflow from blowing toward the pole piece 100, and preventing the pole piece 100 from shaking during the cutting process and affecting the quality of the pole lug 101.

[0054] like Figure 3 As shown, in the conveying direction of the pole piece 100 , a first pole piece roller 213 is disposed upstream of the cavity 201 , and a second pole piece roller 214 is disposed downstream of the cavity 201 . The diameter of the second pole piece roller 214 is greater than that of the first pole piece roller 213 .

[0055] More specifically, the first pole piece roller 213 is used to change the conveying direction of the pole piece 100 so that the pole piece 100 can smoothly enter the cavity 201 through the pole piece channel 210. The second pole piece roller 214 is used to change the conveying direction of the cut pole piece 100 so that the cut pole piece 100 can be separated from the waste 102. Therefore, the pole piece 100 with the pole ear 101 passes through the second pole piece roller 214 and enters the next process, while the waste 102 continues to be adsorbed by the conveyor belt 203 and finally falls into the waste collection pipe 235. The diameter of the second pole piece roller 214 is larger than the diameter of the first pole piece roller 213, which can prevent the pole ear of the cut pole piece 100 from bending when passing through the second pole piece roller 214.

[0056] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the cavity 201 can move along the first direction or the second direction, and / or can rotate around the first direction or the second direction or the third direction. The first direction, the second direction and the third direction intersect each other.

[0057] More specifically, the cavity 201 moves along the first direction or the second direction, and / or can rotate around the first direction or the second direction or the third direction, and can adjust the parallelism between the adsorption plate 202 and the pole piece 100, thereby improving the processing accuracy of laser die cutting. The movement and rotation of the cavity 201 can be achieved by a multi-degree-of-freedom manipulator, a multi-degree-of-freedom workbench, etc.

[0058] like Figure 3 , Figure 4 , Figure 8 As shown, this embodiment specifically shows a structure in which the cavity 201 rotates around the first direction and the second direction. The laser die-cutting device 200 also includes a first mounting plate 215 and a second mounting plate 216, and the cavity 201 is mounted on the first mounting plate 215. The first mounting plate 215 is connected to the second mounting plate 216, and the first mounting plate 215 is provided with a plurality of first top screws 217, the first top screws 217 abut against the second mounting plate 216, and the first top screws 217 can be adjusted to allow the first mounting plate 215 to rotate around the first direction and / or the second direction.

[0059] In more detail, the cavity 201 can be mounted to the first mounting plate 215 by welding, riveting, screw connection, etc. The first mounting plate 215 and the second mounting plate 216 can be connected by bolts, screws, etc. A transition piece 233 can also be provided between the first mounting plate 215 and the second mounting plate 216 for connection. Figure 8In the figure, the first mounting plate 215 is provided with a plurality of first top screws 217. For the sake of clarity, the direction indicated by the first direction arrow is right, the opposite direction is left, the direction indicated by the second direction arrow is front, and the opposite direction is rear. Therefore, the plurality of first top screws 217 are marked as left rear first top screw 2171, right rear first top screw 2172, left front first top screw 2173, and right front first top screw 2174. Figure 8 During adjustment, the connecting piece between the first mounting plate 215 and the second mounting plate 216 is loosened, and the left rear first top screw 2171 and the left front first top screw 2173 close to the second mounting seat 209 in the first direction are adjusted to increase or decrease the distance between the left rear first top screw 2171 and the left front first top screw 2173 from the first mounting plate 215 to the position where the first top screw 2171 and the left front first top screw 2173 abut against the second mounting plate 216, and the first mounting plate 215 will rotate around the second direction, and accordingly, the cavity 201 will also rotate around the second direction. After the rotation is in place, the connecting piece is tightened, and the rotation angle of the cavity 201 around the second direction is fixed. Similarly, when adjusting, loosen the connector between the first mounting plate 215 and the second mounting plate 216, adjust the left rear first top screw 2171 and the right rear first top screw 2172 close to the fastener 219 in the second direction, so that the distance between the left rear first top screw 2171 and the right rear first top screw 2172 from the first mounting plate 215 to the position abutting the second mounting plate 216 becomes larger or smaller, and the first mounting plate 215 will rotate around the first direction, and accordingly, the cavity 201 will also rotate around the first direction. After rotating in place, tighten the connector, and the rotation angle of the cavity 201 around the first direction is fixed. This mechanical adjustment structure does not require a motor and has low cost.

[0060] like Figure 3 , Figure 4 , Figure 8 As shown, this embodiment specifically shows a structure in which the cavity 201 rotates around a third direction. The laser die-cutting device 200 also includes a first mounting plate 215, a second mounting plate 216 and a third mounting plate 218. The cavity 201 is mounted on the first mounting plate 215, the first mounting plate 215 is connected to the second mounting plate 216, and the second mounting plate 216 and the third mounting plate 218 are rotatably matched through a rotating shaft 230, so that the second mounting plate 216 can rotate around the third direction. The second mounting plate 216 is provided with a fastener 219 to limit the rotation angle of the second mounting plate 216 relative to the third mounting plate 218.

[0061] More specifically, the first mounting plate 215 and the second mounting plate 216 can be connected in the aforementioned rotatable manner or fixedly connected. The second mounting plate 216 and the third mounting plate 218 are rotatably matched through the rotating shaft 230, so when the first mounting plate 215 and the second mounting plate 216 are relatively fixed, the rotation of the second mounting plate 216 can drive the cavity 201 to rotate. The rotating shaft 230 extends along the third direction, so the second mounting plate 216 can rotate around the third direction. The fastener 219 can be a bolt, a bayonet, etc. A plurality of threaded holes or clamping holes can be set on the third mounting plate 218. After the second mounting plate 216 is rotated to a suitable angle, the fastener 219 is screwed into the threaded hole or clamped into the clamping hole to prevent the second mounting plate 216 from further rotating, so as to limit the rotation angle of the second mounting plate 216 relative to the third mounting plate 218. The fastener 219 can be located on a structure such as a stopper, and the stopper is used to block the rotation of the second mounting plate 216. In this case, the stopper can be regarded as a part of the second mounting plate 216, and still belongs to the category of the fastener 219 being arranged on the second mounting plate 216. The structure in this embodiment does not require a motor drive and has low cost.

[0062] like Figure 3 , Figure 8 As shown, this embodiment specifically shows a structure in which the cavity 201 moves along the first direction. The laser die-cutting device 200 also includes a first mounting plate 215, a second mounting plate 216, a third mounting plate 218 and a fourth mounting plate 220. The cavity 201 is mounted on the first mounting plate 215, the first mounting plate 215 is connected to the second mounting plate 216, the second mounting plate 216 is connected to the third mounting plate 218, and the third mounting plate 218 is slidably matched with the fourth mounting plate 220. The fourth mounting plate 220 is installed with an adjustment seat 221, and the adjustment seat 221 is provided with a first screw rod 222 and a second screw rod 223. The first screw rod 222 is threadedly matched with the third mounting plate 218 to drive the third mounting plate 218 to slide along the first direction, and the second screw rod 223 is in contact with the third mounting plate 218 to limit the position of the third mounting plate 218 in the first direction.

[0063] More specifically, the first mounting plate 215 and the second mounting plate 216 can be connected in the aforementioned rotatable manner or fixedly connected, and the second mounting plate 216 and the third mounting plate 218 can be connected in the aforementioned rotatable manner or fixedly connected. The third mounting plate 218 and the fourth mounting plate 220 are slidably matched through a slider, a linear rail, or through a slider, a slide groove and other structures. The fourth mounting plate 220 is installed with an adjustment seat 221. The adjustment seat 221 is provided with a first screw rod 222 and a second screw rod 223. The third mounting plate 218 is fixedly connected to the adapter block 234, so the adapter block 234 can also be regarded as a part of the third mounting plate 218. The adapter block 234 can also be a structure formed by bending the third mounting plate 218. A threaded hole is opened on the adapter block 234, and the first screw rod 222 cooperates with the threaded hole on the adapter block 234. When the first screw rod 222 is rotated, the adapter block 234 drives the third mounting plate 218 to slide along the first direction, and the third mounting plate 218 further drives the cavity 201 to slide along the first direction through the second mounting plate 216 and the first mounting plate 215. After the third mounting plate 218 is moved into position, the second screw rod 223 is rotated to abut against the adapter block 234 on the third mounting plate 218 to limit the position of the third mounting plate 218 in the first direction. This structure does not require motor drive and has low cost.

[0064] like Figure 3 and Figure 4 As shown, the laser generator 204 is slidably matched with the fourth mounting plate 220, and the fourth mounting plate 220 is installed with a first direction adjustment mechanism 224. The first direction adjustment mechanism 224 is used to drive the laser generator 204 to slide along the first direction to approach or move away from the cavity 201.

[0065] More specifically, the laser generator mounting plate 237 can be slidably matched with the fourth mounting plate 220 through a slider linear rail, or can be slidably matched with the fourth mounting plate 220 through a slider slot or other structures. The laser generator 204 is mounted on the laser generator mounting plate 237. The fourth mounting plate 220 is mounted with a first direction adjustment mechanism 224, the moving end of the first direction adjustment mechanism 224 is connected to the laser generator mounting plate 237, and the first direction adjustment mechanism 224 is rotated to drive the laser generator 204 to slide along the first direction to approach or move away from the cavity 201, thereby ensuring that the pole piece 100 is within the focal depth range of the laser 205, and ensuring the cutting quality of the pole piece 100. The first direction adjustment mechanism 224 can be a structure such as a motor screw, or a structure such as a hand wheel.

[0066] like Figure 3As shown, the laser die-cutting device 200 in this embodiment further includes a first support 225. The first support 225 is slidably matched with the fourth mounting plate 220. The first support 225 is installed with a second direction adjustment mechanism 226, and the second direction adjustment mechanism 226 is used to drive the fourth mounting plate 220 to slide along the second direction.

[0067] More specifically, the first support 225 can be a supporting structure of the entire laser die-cutting device 200. The first support 225 is equipped with a second direction adjustment mechanism 226, and the moving end of the second direction adjustment mechanism 226 is connected to the fourth mounting plate 220. Rotating the second direction adjustment mechanism 226 can drive the fourth mounting plate 220 to slide along the second direction, and finally drive the cavity 201 and the laser generator 204 to move along the second direction. The second direction adjustment mechanism 226 can be a structure such as a motor screw, or a structure such as a hand wheel.

[0068] like Figure 3 and Figure 4 As shown, the laser die-cutting device 200 also includes a second support 227. The second support 227 is connected to the first mounting plate 215, and a belt transmission mechanism 228 is installed on the second support 227. The belt transmission mechanism 228 is used to drive the transmission belt 203 to move. Since the cavity 201 and the second support 227 are both installed on the first mounting plate 215, the belt transmission mechanism 228 can move synchronously with the cavity 201, and further make the transmission belt 203 inside the cavity 201 move synchronously with the adsorption plate 202, while ensuring the parallelism between the adsorption plate 202 and the pole piece 100, the adsorption surface of the transmission belt 203 can also be kept parallel to the pole piece 100.

[0069] like Figure 4 As shown, the position of the second support 227 relative to the first mounting plate 215 along the first direction can be adjusted. The second support 227 is provided with a plurality of second top screws 229, which abut against the first mounting plate 215 and can be adjusted to allow the second support 227 to rotate around the second direction.

[0070] More specifically, the first mounting plate 215 can be provided with a plurality of threaded holes or clamping holes along the first direction, and the second support 227 can be matched with different threaded holes or clamping holes through bolts, clamping pins, etc., so that the position of the second support 227 along the first direction can be adjusted, thereby making the adsorption surface of the conveyor belt 203 close to or away from the pole piece 100. Along the first direction, the second support 227 is provided with a plurality of second top screws 229. When adjusting, loosen the bolts or clamping pins, rotate the second top screw 229 close to the cavity 201 in the first direction, so that the position where the second top screw 229 abuts against the first mounting plate 215 is larger or smaller than the second support 227, and the second support 227 will rotate around the second direction, and accordingly, the adsorption surface of the conveyor belt 203 inside the cavity 201 will also rotate around the second direction. Therefore, the parallelism of the conveyor belt 203 and the pole piece 100 can be adjusted separately.

[0071] When the pole piece 100 needs to be laser die-cut, firstly, the pole piece 100 is passed around the first pole piece roller 213 and then enters the cavity 201 through the pole piece channel 210. The cavity 201 is adjusted to move along the first direction and the second direction, and rotate around the first direction, the second direction, and the third direction, so that the adsorption plate 202 is parallel to the pole piece 100, and the pole piece 100 is adsorbed. The second support is adjusted to move along the first direction and rotate around the second direction, so that the adsorption surface of the conveyor belt 203 inside the cavity 201 is parallel to the pole piece 100, and the pole piece 100 is adsorbed. Move the laser generator 204 along the first direction until the laser 205 is focused on the pole piece 100, and the pole piece 100 is within the focal depth range of the laser 205. As the conveyor belt 203 moves, the laser 205 moves along the Figure 1 The dotted line cuts the pole piece 100, and the cut pole piece 100 is conveyed out of the cavity 201 by the conveyor belt 203. The pole piece 100 with the pole ear 101 passes around the second pole piece roller 214 to enter the next process, and the waste 102 continues to move with the conveyor belt 203 until it falls into the waste collection pipe 235.

[0072] The utility model also provides a battery cell winding device, including the aforementioned laser die-cutting device. After the pole piece 100 is cut by the laser die-cutting device to form a pole ear 101, it enters the battery cell winding process. The battery cell winding device has a simple structure and high efficiency.

[0073] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0074] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A laser die-cutting device (200), characterized in that: include: A cavity (201), wherein an adsorption plate (202) is arranged inside the cavity (201), and the adsorption plate (202) is used to adsorb the pole piece (100); a conveyor belt (203), a portion of which is located in the cavity (201), and the conveyor belt (203) is used to convey the pole piece (100) from the adsorption plate (202) toward the outside of the cavity (201); A laser generator (204), the laser generator (204) being used to emit laser light (205), the laser light (205) being used to cut a pole lug (101) on a pole piece (100); Inside the cavity (201), there is a gap between the adsorption plate (202) and the conveyor belt (203) to form a laser cutting channel (206) for the laser (205) to pass through.

2. The laser die-cutting device (200) according to claim 1, characterized in that: Inside the cavity (201), the adsorption plate (202) and the conveyor belt (203) are located on the same side of the pole piece (100).

3. The laser die-cutting device (200) according to claim 1, characterized in that: The adsorption plate (202) and the laser generator (204) are located on the same side of the pole piece (100).

4. The laser die-cutting device (200) according to claim 1, characterized in that: The cavity (201) is provided with a dust removal cover (207), and the dust removal cover (207) is connected to a negative pressure extraction component to form a negative pressure in the cavity (201).

5. The laser die-cutting device (200) according to claim 4, characterized in that: The cavity (201) comprises a first mounting seat (208) and a second mounting seat (209); the first mounting seat (208) and the second mounting seat (209) are arranged at an interval to form a pole piece channel (210); one side of the first mounting seat (208) and the second mounting seat (209) are connected to the dust cover (207); the other side of the first mounting seat (208) and the second mounting seat (209) is provided with a wind knife (211); the wind knife (211) and the dust cover (207) are located on opposite sides of the first mounting seat (208) and the second mounting seat (209); the wind knife (211) is used to form an airflow and blow it toward the dust cover (207).

6. The laser die-cutting device (200) according to claim 5, characterized in that: An air guide plate (212) is also provided in the cavity (201), and the air guide plate (212) is used to block the airflow formed by the wind knife (211) from blowing toward the pole piece (100).

7. The laser die-cutting device (200) according to claim 1, characterized in that: In the pole piece conveying direction, a first pole piece roller (213) is arranged upstream of the cavity (201), and a second pole piece roller (214) is arranged downstream of the cavity (201), and the diameter of the second pole piece roller (214) is greater than the diameter of the first pole piece roller (213).

8. The laser die-cutting device (200) according to claim 1, characterized in that: The cavity (201) is capable of moving along the first direction or the second direction, and / or is capable of rotating around the first direction, the second direction, or a third direction, and the first direction, the second direction, and the third direction intersect each other.

9. The laser die-cutting device (200) according to claim 8, characterized in that: The cavity (201) further comprises a first mounting plate (215) and a second mounting plate (216), wherein the cavity (201) is mounted on the first mounting plate (215), the first mounting plate (215) is connected to the second mounting plate (216), the first mounting plate (215) is provided with a plurality of first top screws (217), the first top screws (217) abut against the second mounting plate (216), and the first top screws (217) can be adjusted so that the first mounting plate (215) can rotate around the first direction and / or the second direction.

10. The laser die-cutting device (200) according to claim 8, characterized in that: It also includes a first mounting plate (215), a second mounting plate (216) and a third mounting plate (218), the cavity (201) is mounted on the first mounting plate (215), the first mounting plate (215) is connected to the second mounting plate (216), the second mounting plate (216) and the third mounting plate (218) are rotatably matched to enable the second mounting plate (216) to rotate around a third direction, and the second mounting plate (216) is provided with a fastener (219) to limit the rotation angle of the second mounting plate (216) relative to the third mounting plate (218).

11. The laser die-cutting device (200) according to claim 8, characterized in that: The invention also includes a first mounting plate (215), a second mounting plate (216), a third mounting plate (218) and a fourth mounting plate (220), wherein the cavity (201) is mounted on the first mounting plate (215), the first mounting plate (215) is connected to the second mounting plate (216), the second mounting plate (216) is connected to the third mounting plate (218), the third mounting plate (218) is slidably matched with the fourth mounting plate (220), the fourth mounting plate (220) is installed with an adjustment seat (221), the adjustment seat (221) is provided with a first screw rod (222) and a second screw rod (223), the first screw rod (222) is threadedly matched with the third mounting plate (218) to drive the third mounting plate (218) to slide along the first direction, and the second screw rod (223) is in contact with the third mounting plate (218) to limit the position of the third mounting plate (218) in the first direction.

12. The laser die-cutting device (200) according to claim 11, characterized in that: The laser generator (204) is slidably matched with the fourth mounting plate (220); the fourth mounting plate (220) is provided with a first direction adjustment mechanism (224); the first direction adjustment mechanism (224) is used to drive the laser generator (204) to slide along a first direction to approach or move away from the cavity (201).

13. The laser die-cutting device (200) according to claim 11, characterized in that: It also includes a first support (225), the first support (225) is slidably matched with the fourth mounting plate (220), and the first support (225) is installed with a second direction adjustment mechanism (226), and the second direction adjustment mechanism (226) is used to drive the fourth mounting plate (220) to slide along the second direction.

14. The laser die-cutting device (200) according to claim 9, characterized in that: It also includes a second support (227), wherein the second support (227) is connected to the first mounting plate (215), and the second support (227) is installed with a belt transmission mechanism (228), and the belt transmission mechanism (228) is used to drive the transmission belt (203) to move.

15. The laser die-cutting device (200) according to claim 14, characterized in that: The position of the second support (227) relative to the first mounting plate (215) along a first direction can be adjusted, and the second support (227) is provided with a plurality of second top screws (229), and the second top screws (229) are in contact with the first mounting plate (215), and the second top screws (229) can be adjusted to allow the second support (227) to rotate around a second direction.

16. A battery cell winding device, characterized in that: It comprises the laser die-cutting device as described in any one of claims 1 to 15.

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