A pole piece conveying belt and pole piece transfer device

Abstract

The application provides an electrode piece conveying belt and an electrode piece transfer device. The electrode piece conveying belt comprises a supporting plate, a belt and a driving member. The supporting plate comprises negative pressure suction areas and vacuum breaking areas which are alternately arranged along a first direction and are separately arranged. The negative pressure suction areas comprise a plurality of first vacuum chambers which are arranged at intervals along a second direction and are connected in series. The vacuum breaking areas comprise second vacuum chambers and positive pressure chambers which are alternately arranged along the second direction. The plurality of positive pressure chambers are connected in series. The plurality of second vacuum chambers are connected in series. The belt comprises a plurality of groups of suction holes and separation holes which are alternately arranged along the second direction. Each group of suction holes is connected with the first vacuum chambers and the second vacuum chambers in series. Each group of separation holes is connected with the positive pressure chambers. The driving member is used for driving the belt to move relative to the supporting plate along the first direction, so that the electrode pieces adsorbed on the belt pass through the negative pressure suction areas and the vacuum breaking areas. The application solves the problem that the electrode pieces are prone to be skewed or deviated during transportation.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing equipment technology, and more specifically, to an electrode conveyor belt and an electrode transfer device. Background Technology

[0002] The production process of stacked lithium batteries mainly includes: feeding positive and negative electrodes, unwinding and alignment, cutting electrode sheets and rounding outer corners, electrode sheet transfer, inspection and adjustment of electrode sheets, and Z-shaped stacking. During the production of stacked lithium batteries, due to the extremely thin and lightweight nature of the electrode sheets, the friction between the electrode sheets and the electrode sheet transport device is very small. To better transport the electrode sheets, negative pressure is typically used to adsorb them.

[0003] In existing electrode transport devices, electrodes need to be removed in some areas during the transport process. However, it takes a certain amount of time for the positive pressure gas to reach the corresponding area. This creates a time difference between when the electrode is transported to the corresponding area and when the positive pressure gas arrives, which can cause the electrode to become skewed or offset, affecting the stacking accuracy of subsequent electrodes. Summary of the Invention

[0004] The present invention aims to solve the problem that existing electrode conveyor belts are prone to skewing or shifting when transporting electrodes.

[0005] To address the above problems, a first aspect of the present invention provides an electrode conveyor belt, comprising:

[0006] The tray includes a negative pressure adsorption zone and a vacuum breaking zone alternately arranged along a first direction, the negative pressure adsorption zone and the vacuum breaking zone being separated; the negative pressure adsorption zone includes a plurality of interconnected first vacuum chambers arranged at intervals along a second direction, the vacuum breaking zone includes a second vacuum chamber and a positive pressure chamber alternately arranged along the second direction, the plurality of positive pressure chambers being interconnected, and the plurality of second vacuum chambers being interconnected;

[0007] A belt is disposed on the support plate. The belt includes multiple sets of adsorption holes and multiple sets of separation holes. Each set of adsorption holes and each set of separation holes are alternately arranged along a second direction. Each set of adsorption holes and each set of separation holes extends along a first direction. Each set of adsorption holes is connected to a first vacuum chamber and a second vacuum chamber, respectively. The belt adsorbs the electrode through the adsorption holes. Each set of separation holes is connected to the positive pressure chamber. The belt separates from the electrode through the separation holes.

[0008] A driving component is connected to the belt and is used to drive the belt to move relative to the support plate in a first direction, so that the electrode adsorbed on the belt passes through the negative pressure adsorption zone and the vacuum breaking zone.

[0009] The first direction and the second direction are set perpendicularly.

[0010] Furthermore, the number of the first vacuum chambers in the negative pressure adsorption zone is the same as the number of the second vacuum chambers in the vacuum breaking zone. The first vacuum chambers and the second vacuum chambers are integrally formed and connected, and the first vacuum chambers and the second vacuum chambers are separated by a sealing block.

[0011] Furthermore, the vacuum breaking zone includes at least one column of vacuum breaking groups arranged along the first direction, each of the vacuum breaking groups being independently arranged. Each vacuum breaking group includes a second vacuum chamber and a positive pressure chamber arranged alternately along the second direction. Each positive pressure chamber is provided with at least one first air hole, which is used to transport the positive pressure gas in the positive pressure chamber to the electrode through the separation hole, thereby separating the electrode from the belt.

[0012] Furthermore, each set of separation holes includes a first separation hole and a second separation hole. Along the first direction, a plurality of first separation holes are evenly arranged on the belt, and at least one second separation hole arranged along the second direction is provided between any two adjacent first separation holes.

[0013] Furthermore, the first separation hole is waist-shaped or elliptical, the second separation hole is circular, the projected area of ​​the first separation hole along a third direction is greater than the projected area of ​​the second separation hole along a third direction, the projected area of ​​the adsorption hole along a third direction is greater than the projected area of ​​the second separation hole along a third direction, and the third direction is perpendicular to the plane formed by the first direction and the second direction.

[0014] Furthermore, each set of adsorption holes includes multiple adsorption holes uniformly arranged on the belt along a first direction. The negative pressure gas in the first vacuum chamber is transported to the electrode through the adsorption holes, and the negative pressure gas in the second vacuum chamber is transported to the electrode through the adsorption holes.

[0015] Furthermore, it also includes a positive pressure pipe, a negative pressure pipe, and a speed regulating component. The negative pressure pipe is arranged on the support plate along the second direction. The negative pressure adsorption zone is provided with at least one negative pressure pipe connected to the first vacuum chamber. The vacuum breaking zone is provided with at least one negative pressure pipe connected to the second vacuum chamber and at least one positive pressure pipe connected to the positive pressure chamber. The speed regulating component is connected to the positive pressure chamber and is used to regulate the flow rate of the positive pressure gas delivered from the positive pressure chamber to the separation hole.

[0016] A second aspect of the present invention provides an electrode transfer device, comprising a first electrode conveyor belt and a second electrode conveyor belt, wherein the first electrode conveyor belt and the second electrode conveyor belt are both arranged along a first direction, and the projections of the first electrode conveyor belt and the second electrode conveyor belt along a third direction at least partially overlap, wherein a vacuum breaking zone is provided in the region of the first electrode conveyor belt near the second electrode conveyor belt, and a negative pressure adsorption zone is provided in the region of the second electrode conveyor belt near the vacuum breaking zone, wherein the first electrode conveyor belt and the second electrode conveyor belt are both electrode conveyor belts as described in the first aspect.

[0017] Furthermore, the vacuum breaking zone of the first electrode conveyor belt near the second electrode conveyor belt is the electrode dropping zone;

[0018] It also includes a sheet arrangement area and a sheet collection area. The sheet arrangement area, the sheet dropping area, and the sheet collection area are arranged sequentially along a first direction. The trays in the sheet arrangement area and the sheet collection area are both set as vacuum breaking areas. The tray between the sheet arrangement area and the sheet dropping area is set as a negative pressure adsorption area. The tray between the sheet dropping area and the adsorption area is set as a negative pressure adsorption area. The sheet arrangement area is set on the first electrode conveyor belt, and the sheet collection area is set on the second electrode conveyor belt.

[0019] Furthermore, it also includes a detection component, which is disposed on the first electrode conveyor belt and at one end of the electrode stacking area away from the electrode dropping area. The detection component is used to detect defects in the electrode.

[0020] It also includes an iron removal component, which is provided on both the first electrode conveyor belt and the second electrode conveyor belt. The iron removal component is used to remove iron from the first electrode conveyor belt and the second electrode conveyor belt.

[0021] It also includes a dust removal component, which is provided on both the first electrode conveyor belt and the second electrode conveyor belt. The dust removal component is used to remove dust from the first electrode conveyor belt and the second electrode conveyor belt.

[0022] The electrode conveyor belt of this invention improves the stability of electrode conveying by setting a negative pressure adsorption zone on the pallet. The first vacuum chamber of the negative pressure adsorption zone is connected to the adsorption hole, allowing the belt to adsorb electrodes under negative pressure. The negative pressure also removes dust from the belt, reducing contamination of the electrodes. Furthermore, a vacuum breaking zone is set on the pallet, with its second vacuum chamber connected to the adsorption hole. This allows the belt to adsorb electrodes under negative pressure during conveying, while its positive pressure chamber is connected to the separation hole, applying positive pressure to the electrode surface. This breaks the negative pressure applied to the electrode by the second vacuum chamber, separating the electrode from the belt. The second vacuum chamber and the positive pressure chamber of the vacuum breaking zone are alternately arranged along a second direction, ensuring that the positions for conveying positive pressure gas and negative pressure gas in the vacuum breaking zone are close. This allows the positive pressure gas to break the negative pressure applied to the electrode more quickly and stably during electrode conveying, reducing the time difference required for breaking the negative pressure in the vacuum breaking zone during electrode conveying. This reduces or avoids skewing or offset caused by vacuum breaking during electrode transport. In addition, the alternating arrangement of the negative pressure adsorption zone and the vacuum breaking zone enables vacuum breaking during the electrode transport process, which facilitates the transfer of the electrode. The separation of the negative pressure adsorption zone and the vacuum breaking zone allows them to be adjusted independently without interfering with each other, which is beneficial to improving the vacuum breaking effect of the vacuum breaking zone.

[0023] The electrode transfer device of this invention, by setting up a first electrode conveyor belt and a second electrode conveyor belt, designates a vacuum breaking zone in the area of ​​the first electrode conveyor belt near the second electrode conveyor belt. This vacuum breaking zone allows the electrode to separate from the first electrode conveyor belt. When the positive pressure applied to the electrode surface in the vacuum breaking zone is greater than the negative pressure applied to the electrode surface, the pressure on the electrode surface can be converted into positive pressure, causing the electrode to detach from the first electrode conveyor belt and be blown up. The belts in both the first and second electrode conveyor belts continuously move along the conveying direction, and the electrode moves towards the second electrode conveyor belt under the action of inertia. The area of ​​the second electrode conveyor belt near the vacuum breaking zone is designated as a negative pressure adsorption zone, which allows the electrode to fall downwards and adsorb. By switching between positive and negative pressure, the electrode can be transferred more smoothly from the first electrode conveyor belt to the second electrode conveyor belt, and the skewing or offset of the electrode during transfer can be avoided. This reduces the impact of the transportation process on the production line's utilization rate before the electrode enters the stacking process, effectively reducing the generation of defective electrodes. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a structure of the electrode transfer device provided in an embodiment of the present invention;

[0025] Figure 2 This is another structural schematic diagram of the electrode transfer device provided in an embodiment of the present invention;

[0026] Figure 3 This is another structural schematic diagram of the electrode transfer device provided in the embodiments of the present invention;

[0027] Figure 4 This is a partial structural schematic diagram of the first electrode conveyor belt provided in an embodiment of the present invention;

[0028] Figure 5 for Figure 4 A schematic diagram of the side view structure;

[0029] Figure 6 for Figure 4 A top-view structural diagram;

[0030] Figure 7 This is a partial structural schematic diagram of the second pole sheet conveyor belt provided in an embodiment of the present invention;

[0031] Figure 8 for Figure 7 A schematic diagram of the side view structure;

[0032] Figure 9 for Figure 7 A top-view structural diagram;

[0033] Figure 10 This is a schematic diagram of the structure of the belt and pallet in the vacuum breaking zone provided in an embodiment of the present invention;

[0034] Figure 11 for Figure 10 Schematic diagram of the middle support plate;

[0035] Figure 12 for Figure 10 Schematic diagram of the middle belt structure;

[0036] Figure 13 This is a schematic diagram of the dust removal component in an embodiment of the present invention;

[0037] Figure 14 This is a schematic diagram of the structure of the driving component in an embodiment of the present invention. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and thoroughly described in conjunction with the accompanying drawings. In this description, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. Additionally, in the description of the present invention, "at least one" means one or more, and "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this specification, the term "as an alternative embodiment" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one alternative embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Combination Figures 1 to 12 As shown, a first aspect of this embodiment provides an electrode conveyor belt, comprising: a pallet 10, a belt 20, and a drive unit 30, wherein:

[0041] The pallet 10 includes a first direction (i.e. Figure 2 The negative pressure adsorption zone 13 and the vacuum breaking zone 14 are alternately arranged in the x-axis direction (the transport direction of the electrode). The negative pressure adsorption zone 13 and the vacuum breaking zone 14 are separated. The negative pressure adsorption zone 13 includes a second direction (i.e., along the x-axis direction, the transport direction of the electrode). Figure 2 Multiple interconnected first vacuum chambers 131 are arranged at intervals along the y-axis direction in the middle. The vacuum breaking zone 14 includes second vacuum chambers 141 and positive pressure chambers 142 that are alternately arranged along the second direction. Multiple positive pressure chambers 142 are interconnected. Multiple second vacuum chambers 141 are interconnected. The positive pressure chambers 142 and the second vacuum chambers 141 are not interconnected.

[0042] The belt 20 is mounted on the support plate 10. The belt 20 includes multiple sets of adsorption holes 21 and multiple sets of separation holes 22. Each set of adsorption holes 21 and each set of separation holes 22 are alternately arranged along the second direction. Each set of adsorption holes 21 and each set of separation holes 22 are extended along the first direction. Each set of adsorption holes 21 is connected to the first vacuum chamber 131 and the second vacuum chamber 141 respectively. The belt 20 adsorbs the electrode through the adsorption holes 21. Each set of separation holes 22 is connected to the positive pressure chamber 142. The belt 20 is separated from the electrode through the separation holes 22.

[0043] The drive unit 30 is connected to the belt 20. The drive unit 30 is used to drive the belt 20 to move relative to the pallet in the first direction, so that the electrode adsorbed on the belt 20 passes through the negative pressure adsorption zone 13 and the vacuum breaking zone 14. When the electrode passes through the negative pressure adsorption zone 13, the belt 20 adsorbs the electrode to transport the electrode. When the electrode passes through the vacuum breaking zone 14, the belt 20 and the electrode separate to transfer the electrode.

[0044] The electrode conveyor belt provided in this embodiment improves the stability of electrode conveying by setting a negative pressure adsorption zone on the pallet. The first vacuum chamber of the negative pressure adsorption zone is connected to the adsorption hole, allowing the belt to adsorb the electrode under negative pressure. The negative pressure also removes dust from the belt, reducing contamination of the electrode. A vacuum breaking zone is set on the pallet, with its second vacuum chamber connected to the adsorption hole. This allows the belt to adsorb the electrode under negative pressure during conveying. The positive pressure chamber is connected to the separation hole, applying positive pressure to the surface of the electrode to break the negative pressure applied to the electrode by the second vacuum chamber, thus separating the electrode from the belt. The second vacuum chamber and the positive pressure chamber of the vacuum breaking zone are alternately arranged along a second direction, making the positions for conveying positive pressure gas and negative pressure gas in the vacuum breaking zone close to each other. This allows the positive pressure gas to break the negative pressure applied to the electrode more quickly and stably during electrode conveying, reducing the time difference required for breaking the negative pressure applied to the electrode in the vacuum breaking zone during conveying. This reduces or avoids skewing or offset caused by vacuum breaking during electrode transport. In addition, the alternating arrangement of the negative pressure adsorption zone and the vacuum breaking zone enables vacuum breaking during the electrode transport process, which facilitates the transfer of the electrode. The separation of the negative pressure adsorption zone and the vacuum breaking zone allows them to be adjusted independently without interfering with each other, which is beneficial to improving the vacuum breaking effect of the vacuum breaking zone.

[0045] Based on the above embodiments, as an optional implementation, the number of first vacuum chambers 131 in the negative pressure adsorption zone 13 is the same as the number of second vacuum chambers 141 in the vacuum breaking zone 14. The first vacuum chambers 131 and second vacuum chambers 141 are connected in a one-to-one correspondence, integrally formed and connected, and separated by a sealing block 15. Thus, the one-to-one correspondence and integral connection of the first vacuum chambers 131 and second vacuum chambers 141 avoids gaps between them causing instability in the negative pressure gas and affecting the stability of electrode delivery. The separation of the first vacuum chambers 131 and second vacuum chambers 141 by the sealing block 15 enables the separation of the negative pressure adsorption zone 13 and the vacuum breaking zone 14, allowing independent adjustment of the two zones without interference. As another optional implementation, the first vacuum chambers 131 and second vacuum chambers 141 are connected separately.

[0046] In this embodiment, along the second direction, the distance between any two adjacent first vacuum chambers 131 in the negative pressure adsorption zone 13 is 'a', and the distance between any two adjacent second vacuum chambers 141 in the vacuum breaking zone 14 is also 'a', that is, the distance between any two adjacent first vacuum chambers 131 is equal to the distance between any two adjacent second vacuum chambers 141. The positive pressure chamber 142 is disposed within the distance between any two adjacent second vacuum chambers 141. This is beneficial for further improving the stability of electrode transport between different regions. In this embodiment, the specific numerical range of the distance 'a' is not further limited; those skilled in the art can set it according to actual conditions.

[0047] Based on the above embodiments, as an optional implementation, the vacuum breaking zone 14 includes at least one vacuum breaking group arranged along the first direction. Each vacuum breaking group is independently arranged. The vacuum breaking group includes a second vacuum chamber 141 and a positive pressure chamber 142 arranged alternately along the second direction. Each positive pressure chamber 142 is provided with at least one first air hole 1421. The first air hole 1421 is used to transport the positive pressure gas in the positive pressure chamber 142 to the electrode through the separation hole 22, so that the electrode and the belt 20 are separated.

[0048] Specifically, in combination Figure 6As shown, the tray 10 is provided with two vacuum breaking zones 14, one of which serves as the sheet stacking zone A and the other as the sheet dropping zone B. The sheet stacking zone A includes a vacuum breaking group, which includes second vacuum chambers 141 and positive pressure chambers 142 alternately arranged along a second direction. The second vacuum chambers 141 are spaced apart and connected, and the positive pressure chambers 142 are spaced apart and connected. Each positive pressure chamber 142 is designed to be waist-shaped, and each positive pressure chamber 142 is provided with two or three first air holes 1421. Thus, the sheet stacking zone A adopts this arrangement, which can both achieve vacuum breaking and separate the electrode sheet from the belt 20, and reduce processing costs. The electrode dropping area B includes twelve vacuum breaking groups. Two adjacent vacuum breaking groups can form a vacuum breaking group, that is, the electrode dropping area B includes six vacuum breaking groups. Each vacuum breaking group includes two columns to match the length of the electrode. Of course, depending on the length of the electrode, three or four adjacent vacuum breaking groups can also be combined to form a vacuum breaking group. Those skilled in the art can make the settings according to the actual situation. Each vacuum breaking group includes a second vacuum chamber 141 and a positive pressure chamber 142 alternately arranged along the second direction. The second vacuum chambers 141 are spaced apart and connected, and the positive pressure chambers 142 are spaced apart and connected. Each positive pressure chamber 142 is waist-shaped and has a first air hole 1421. Thus, the arrangement of the dropping area B facilitates independent adjustment of each vacuum breaking group. The air supply and vacuum breaking time of each vacuum breaking group can be adjusted to adapt to electrodes of different lengths. The magnitude of the positive pressure applied to the electrode corresponding to each vacuum breaking group can also be adjusted to achieve the adsorption of the electrode by the belt 20 or the separation of the belt 20 from the electrode to blow air onto the electrode, so as to better transport the electrode.

[0049] Combination Figure 7 As shown, the tray 10 is provided with a vacuum breaking zone 14, which serves as the electrode picking zone C. The electrode picking zone C includes eight rows of vacuum breaking groups. Each row of vacuum breaking groups includes a second vacuum chamber 141 and a positive pressure chamber 142 arranged alternately along the second direction. The second vacuum chambers 141 are spaced apart and connected, and the positive pressure chambers 142 are spaced apart and connected. Each positive pressure chamber 142 is designed to be waist-shaped, and each positive pressure chamber 142 is provided with a first air hole 1421. Thus, the electrode picking zone C adopts this arrangement to facilitate independent adjustment of each row of vacuum breaking groups, so as to adjust the air supply according to the position of the electrode (close to the negative pressure adsorption zone 13 or far from the negative pressure adsorption zone 13), which helps to shorten the vacuum breaking time, facilitate the transfer of the electrode, and improve the efficiency of electrode transfer.

[0050] Based on the above embodiments, as an optional implementation method, combined with Figure 12As shown, each set of separation holes 22 includes a first separation hole 221 and a second separation hole 222. Along a first direction, a plurality of first separation holes 221 are evenly arranged on the belt 20, meaning the spacing between any two adjacent first separation holes 221 is equal. At least one second separation hole 222 arranged along a second direction is provided between any two adjacent first separation holes 221. For example, combined with… Figure 12 As shown, two second separation holes 222 are provided between any two adjacent first separation holes 221, and the two separation holes 222 are arranged along a second direction. Both the first separation hole 221 and the second separation hole 222 are through holes. The first separation hole 221 is oblong or elliptical, and the second separation hole 222 is circular. The first separation hole 221 is arranged along a third direction (i.e., Figure 2 The projected area of ​​the first separation hole 221 (in the z-axis direction) is larger than the projected area of ​​the second separation hole 222 along the third direction. Therefore, by setting the first separation hole 221, the positive pressure gas in each positive pressure chamber 142 can be transported to the first separation hole 221 through the first vent 1421 and then transferred to the electrode to break the vacuum on the electrode. By setting the second separation hole 222 between the first separation holes 221, the second separation hole 222 can connect different positive pressure chambers 142, which helps to increase the contact area between the electrode and the positive pressure gas, achieving a better vacuum breaking effect. In addition, the area of ​​the first separation hole 221 is larger than the area of ​​the second separation hole 222, which not only increases the area of ​​the vacuum breaking region and improves the vacuum breaking effect, but the smaller area of ​​the second separation hole 222 also reduces the probability of belt 20 breakage, thus improving the service life of the belt 20. Preferably, the projection of the first separation hole 221 along the third direction at least partially overlaps with the projection of the first vent 1421 along the first direction, so that the positive pressure gas can reach the electrode more quickly, further improving the vacuum breaking effect.

[0051] Based on the above embodiments, as an optional implementation, each set of adsorption holes 21 includes a plurality of adsorption holes 21 uniformly arranged on the belt 20 along the first direction, that is, the spacing between any two adjacent adsorption holes 21 is equal. The adsorption holes 21 are through holes. The negative pressure gas in the first vacuum chamber 131 is transported to the electrode through the adsorption holes 21, and the negative pressure gas in the second vacuum chamber 141 is transported to the electrode through the adsorption holes 21 to adsorb the electrode on the belt 20. The projected area of ​​the adsorption hole 21 along the third direction is larger than the projected area of ​​the second separation hole 222 along the third direction, and the adsorption hole 21 can be set close to the second separation hole 222. Therefore, the area of ​​the adsorption hole 21 is larger than the area of ​​the second separation hole 222. When the electrode is adsorbed in the negative pressure adsorption zone 13, the larger area of ​​the adsorption hole 21 can increase the contact area between the negative pressure gas and the electrode, and improve the adsorption force on the electrode. When the vacuum is broken in the vacuum breaking zone 14, the area of ​​the adsorption hole 21 is larger than the area of ​​the second separation hole 222, and the adsorption hole 21 is set close to the second separation hole 222. This can balance the positive and negative pressures applied to the electrode, so that the electrode and the belt 20 can be separated well, and the electrode is prevented from being blown off-center, which would affect the conveying of the electrode.

[0052] In this embodiment, the specific areas of the first separation hole 221, the second separation hole 222, and the adsorption hole 21 are not further limited, and those skilled in the art can set them according to the actual situation.

[0053] Based on the above embodiments, as an optional implementation, the electrode conveyor belt further includes a positive pressure pipe 40, a negative pressure pipe 50, and a speed regulating component 60. The negative pressure pipe 50 is arranged on the support plate 10 along the second direction. The negative pressure adsorption zone 13 is provided with at least one negative pressure pipe 50 connected to the first vacuum chamber 131, and the vacuum breaking zone 14 is provided with at least one negative pressure pipe 50 connected to the second vacuum chamber 141. The vacuum breaking zone 14 is provided with at least one positive pressure pipe 40 connected to the positive pressure chamber 142. The speed regulating component 60 is connected to the positive pressure chamber 142 and is used to regulate the flow rate of the positive pressure gas conveyed from the positive pressure chamber 142 to the separation hole 22.

[0054] Specifically, multiple negative pressure pipes 50 are arranged at intervals along a first direction, and each negative pressure pipe 50 is located at the end of the support plate 10 along a second direction. Negative pressure channels 70 are correspondingly arranged one-to-one with the negative pressure pipes 50. One end of the negative pressure channel 70 is connected to the negative pressure pipe 50, and the other end of the negative pressure channel 70 is connected to either the first vacuum chamber 131 or the second vacuum chamber 141. Thus, external negative pressure gas enters the negative pressure channel 70 through the negative pressure pipe 50 and is transported to the first vacuum chamber 131 or the second vacuum chamber 141. The negative pressure gas in the first vacuum chamber 131 or the second vacuum chamber 141 is then transported to the electrode through the adsorption holes 21 to adsorb onto the electrode. In this embodiment, each negative pressure adsorption zone 13 and each vacuum breaking zone 14 is provided with at least one negative pressure pipe 50. Those skilled in the art can set the specific number of negative pressure pipes 50 in each negative pressure adsorption zone 13 and each vacuum breaking zone 14 according to actual conditions.

[0055] Specifically, each vacuum breaking zone 14 is provided with at least one positive pressure pipe 40 and at least one positive pressure channel 143. The positive pressure channel 143 is correspondingly provided with the positive pressure pipe 40. One end of the positive pressure channel 143 is connected to the positive pressure pipe 40, and the other end of the positive pressure channel 143 is connected to the positive pressure chamber 142. Thus, the external positive pressure gas enters the positive pressure channel 143 through the positive pressure pipe 40 and is transported to the positive pressure chamber 142 through the positive pressure channel 143. The positive pressure gas in the positive pressure chamber 142 is transported to the first separation hole 221 and the second separation hole 222 through the first vent 1421, so that the electrode and the belt 20 are separated.

[0056] Specifically, the speed regulating component 60 can be disposed on the upper end face of the tray 10 or on the lower end face of the tray 10. For example, in combination with... Figure 5 As shown, the speed regulating component 60 is disposed on the upper end face of the tray 10, in conjunction with... Figure 8 As shown, the speed regulating component 60 is disposed on the lower end face of the support plate 10. The speed regulating component 60 is connected to the first air hole 1421 and is used to regulate the flow rate of the positive pressure gas delivered from the positive pressure chamber 142 to the first separation hole 221 and the second separation hole 222, thereby regulating the magnitude of the positive pressure applied to the electrode. As an optional embodiment, the speed regulating component 60 can be a speed regulating valve. In this embodiment, the number of speed regulating components 60 can be set according to the number of vacuum breaking groups in each vacuum breaking zone 14. Each vacuum breaking group is configured in one-to-one correspondence with each speed regulating component 60. For example, the sheet placement zone A is provided with one speed regulating component 60 corresponding to a vacuum breaking group, and the sheet dropping zone B is provided with six speed regulating components 60 corresponding to vacuum breaking groups, so as to adjust the gas supply and vacuum breaking time of each vacuum breaking group respectively, thereby realizing the independent adjustment of each vacuum breaking group.

[0057] Combination Figures 1 to 3 As shown, a second aspect of this embodiment provides an electrode transfer device, including a first electrode conveyor belt 1 and a second electrode conveyor belt 2. Both the first electrode conveyor belt 1 and the second electrode conveyor belt 2 are arranged along a first direction, and their projections along a third direction at least partially overlap. Both the first electrode conveyor belt 1 and the second electrode conveyor belt 2 are electrode conveyor belts as described in the first aspect. The first electrode conveyor belt 1 can be an inverted belt, and the second electrode conveyor belt 2 is a conveyor belt. The conveying directions of the first electrode conveyor belt 1 and the second electrode conveyor belt 2 are the same, and the electrode is conveyed from the first electrode conveyor belt 1 to the second electrode conveyor belt 2. Along a third direction, the first electrode conveyor belt 1 is positioned above the second electrode conveyor belt 2. A vacuum breaking zone 14 is provided in the region of the first electrode conveyor belt 1 near the second electrode conveyor belt 2, and a negative pressure adsorption zone 13 is provided in the region of the second electrode conveyor belt 2 near the vacuum breaking zone 14.

[0058] The electrode transfer device provided in this embodiment, by setting up a first electrode conveyor belt and a second electrode conveyor belt, sets the area of ​​the first electrode conveyor belt close to the second electrode conveyor belt as a vacuum breaking zone. The vacuum breaking zone can separate the electrode from the first electrode conveyor belt, and when the positive pressure applied to the electrode surface in the vacuum breaking zone is greater than the negative pressure applied to the electrode surface, the pressure on the electrode surface can be converted into positive pressure, which can cause the electrode to detach from the first electrode conveyor belt and be blown up. The belts in the first and second electrode conveyor belts move continuously along the conveying direction, and the electrode moves towards the second electrode conveyor belt under the action of inertia. The area of ​​the second electrode conveyor belt close to the vacuum breaking zone is set as a negative pressure adsorption zone, which can cause the electrode to fall down and adsorb the electrode. By switching between positive and negative pressure, not only can the electrode be transferred from the first electrode conveyor belt to the second electrode conveyor belt more smoothly, but it can also avoid the electrode from tilting or shifting during the transfer process, reduce the impact of the transportation process on the production line utilization rate before the electrode enters the stacking process, and effectively reduce the generation of defective electrodes.

[0059] Based on the above embodiments, as an optional implementation, the spacing between the first electrode conveyor belt 1 and the second electrode conveyor belt 2 along a third direction is adjustable. Specifically, a lifting drive can be provided on the first electrode conveyor belt 1, allowing the first electrode conveyor belt 1 to move along a third direction, facilitating the cleaning and maintenance of the overlapping area between the first electrode conveyor belt 1 and the second electrode conveyor belt 2. In this embodiment, the specific location of the lifting drive is not further limited; those skilled in the art can configure it according to actual conditions. The lifting drive can be a cylinder. As an optional implementation, the spacing between the first electrode conveyor belt 1 and the second electrode conveyor belt 2 along a third direction can be adjusted to be greater than or equal to 50 mm.

[0060] Based on the above embodiments, as an optional implementation, the electrode transfer device further includes a sheet-laying area A, a sheet-dropping area B, and a sheet-retrieving area C arranged sequentially along a first direction. The trays of the sheet-laying area A, the sheet-dropping area B, and the sheet-retrieving area C are all configured as vacuum-breaking areas 14. The tray between the sheet-laying area A and the sheet-dropping area B is configured as a negative pressure adsorption area 13. The tray between the sheet-dropping area B and the sheet-retrieving area C is configured as a negative pressure adsorption area 13. The sheet-laying area A and the sheet-dropping area B are arranged on the first electrode conveyor belt 1, and the sheet-retrieving area C is arranged on the second electrode conveyor belt 2. The sheet-dropping area B is the vacuum-breaking area 14 of the first electrode conveyor belt 1 near the second electrode conveyor belt 2 as described above. Therefore, by setting up a sheet placement area A before the sheet dropping area B, defective electrodes can be pre-selected, preventing them from continuing to circulate. Setting up sheet dropping area B facilitates the transfer of electrodes from the first electrode conveyor belt to the second electrode conveyor belt, reducing the risk of electrode skewing or shifting during transfer. Setting up sheet collection area C at the end of the second electrode conveyor belt facilitates the transfer of electrodes from the second electrode conveyor belt to the stacking and handling area. The first aspect of this embodiment describes the specific structures of sheet placement area A, sheet dropping area B, and sheet collection area C, which will not be repeated here.

[0061] Based on the above embodiments, as an optional implementation, a guide slope 23 is provided between the first electrode conveyor belt 1 and the second electrode conveyor belt 2. The guide slope 23 is disposed between the electrode drop area B and the negative pressure adsorption area 13 near the first electrode conveyor belt 1. The guide slope 23 can guide the electrodes between the first electrode conveyor belt 1 and the second electrode conveyor belt 2, so as to facilitate the conveying of the electrodes on the first electrode conveyor belt 1 to the second electrode conveyor belt 2. As an optional implementation, the guide slope 23 is integrally formed and connected with the belt 20 of the first electrode conveyor belt 1, that is, the guide slope 23 can be a part of the belt 20 of the first electrode conveyor belt 1. In this embodiment, the specific inclination angle of the guide slope 23 is not further described, and those skilled in the art can set it according to the actual situation.

[0062] Based on the above embodiments, as an optional implementation, a detection component 5 is further included. The detection component 5 is disposed on the first electrode conveyor belt 1, and is located at the end of the electrode placement area A opposite to the electrode dropping area B, i.e., before the electrode placement area A. The electrodes sequentially pass through the detection component 5, the electrode placement area A, and the electrode dropping area B. The detection component 5 performs defect detection on the electrodes. Defective electrodes reach the electrode placement area A, and positive pressure gas is supplied to the area to separate the defective electrodes from the belt 20, causing them to be blown off. Electrodes without defects continue to be conveyed to the electrode dropping area B for transfer. Therefore, by performing defect detection on the electrodes during the electrode conveying process, it is beneficial not only to improve the production efficiency of the battery cells but also to reduce the production cost of the battery cells. As an optional implementation, the detection component 5 can be a detection camera (such as a CCD detection camera).

[0063] Based on the above embodiments, as an optional implementation, an iron removal component 3 is also included. Both the first electrode conveyor belt 1 and the second electrode conveyor belt 2 are equipped with iron removal components 3. One iron removal component 3 can be positioned above the belt 20, and the other can be positioned below the pallet 10, thereby removing iron from the first electrode conveyor belt 1 and the second electrode conveyor belt 2. This removes iron from the electrode during the electrode conveying process, preventing metal scraps from being carried into the next process and affecting the quality of the battery cell. As an optional implementation, the iron removal component 3 in this embodiment removes iron using magnetic force, with a magnetic force greater than or equal to 12000 gs. It should be noted that the iron removal component 3 provided in this embodiment mainly adsorbs magnetic impurities (such as metal scraps) generated during electrode production. The electrode surface is coated with a positive or negative active material, which is non-magnetic and cannot be adsorbed by the iron removal component.

[0064] Based on the above embodiments, as an optional implementation, a dust removal component 4 is further included. Both the first electrode conveyor belt 1 and the second electrode conveyor belt 2 are equipped with dust removal components 4. The dust removal components 4 can contact the belt 20 of the first electrode conveyor belt 1, or the dust removal components 4 can contact the belt 2 of the second electrode conveyor belt 2. The dust removal component 4 includes a brush 41, which can rotate around its own axis. During the movement of the belt 20, the brush 41 contacts the surface of the belt, performing rolling dust removal on the belt 20 to remove dust from the first electrode conveyor belt 1 and the second electrode conveyor belt 2, preventing blockage of the adsorption holes and separation holes. As an optional implementation, the brush 41 is detachably connected to the dust removal component 4 for easy replacement.

[0065] Based on the above embodiments, as an optional implementation, the drive unit 30 in the first electrode conveyor belt 1 and the second electrode conveyor belt 2 has the same structure. The drive unit 30 includes a motor 31 and a belt active traction roller 32. The belt active traction roller 32 contacts the belt 20 to drive the belt 20 to move along the transport direction. The belt active traction roller 32 is a shuttle roller, which can provide stable traction force and avoid electrode deviation.

[0066] In this embodiment, the electrode first enters the first electrode conveyor belt 1 and passes through the detection component. The detection component performs defect detection on the electrode. Defective electrode reaches the stacking area A. Positive pressure gas is supplied to the stacking area A to separate the defective electrode from the belt 20 and blow it off, thus detaching it from the electrode transfer device. Defect-free electrode continues to be transported to the dropping area B. The dropping area B separates the electrode from the belt 20 of the first electrode conveyor belt 1, causing the electrode to detach from the belt 20 of the first electrode conveyor belt 1 and be blown up. Under inertia, the electrode moves towards the second electrode conveyor belt 2. At the same time, the negative pressure adsorption area on the second electrode conveyor belt 2 causes the electrode to fall and adsorbs the electrode, thus transferring the electrode to the second electrode conveyor belt 2. The electrode continues to be transported until it reaches the picking area C. Positive pressure gas is supplied to the picking area C to separate the electrode from the belt 20 of the second electrode conveyor belt 2, so that the electrode can be transferred to the stacking and handling area.

[0067] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A pole piece conveyor belt, characterized in that, The application relates to a plate and a belt. The plate comprises negative pressure adsorption areas and vacuum breaking areas arranged alternately along a first direction, the negative pressure adsorption areas and the vacuum breaking areas being arranged separately; the negative pressure adsorption areas comprise a plurality of first vacuum chambers arranged separately along a second direction and connected to each other; the vacuum breaking areas comprise a plurality of second vacuum chambers and positive pressure chambers arranged alternately along the second direction, the plurality of positive pressure chambers being connected to each other, and the plurality of second vacuum chambers being connected to each other. The belt comprises a plurality of groups of adsorption holes and a plurality of groups of separation holes, each group of adsorption holes and each group of separation holes being arranged alternately along the second direction, each group of adsorption holes and each group of separation holes being arranged along the first direction, each group of adsorption holes being connected to the first vacuum chambers and the second vacuum chambers respectively, the belt adsorbing the pole pieces through the adsorption holes, and each group of separation holes being connected to the positive pressure chambers and separating the pole pieces from the belt through the separation holes. A driving member is connected to the belt and used for driving the belt to move along the first direction relative to the plate, so that the pole pieces adsorbed on the belt pass through the negative pressure adsorption areas and the vacuum breaking areas. Each group of separation holes comprises first separation holes and second separation holes, and at least one second separation hole is arranged between any two adjacent first separation holes along the second direction. The projection area of the first separation holes along a third direction is greater than the projection area of the second separation holes along the third direction, and the projection area of the adsorption holes along the third direction is greater than the projection area of the second separation holes along the third direction. The first direction and the second direction are arranged perpendicularly, and the third direction is perpendicular to the plane formed by the first direction and the second direction.

2. The pole piece conveyor belt of claim 1, wherein, The number of the first vacuum chambers in the negative pressure adsorption areas is the same as the number of the second vacuum chambers in the vacuum breaking areas, the first vacuum chambers and the second vacuum chambers are integrally connected, and the first vacuum chambers and the second vacuum chambers are separated by sealing blocks.

3. The pole piece conveyor belt of claim 1, wherein, The vacuum breaking areas comprise at least one column of vacuum breaking groups arranged along the first direction, each vacuum breaking group is arranged independently, each vacuum breaking group comprises second vacuum chambers and positive pressure chambers arranged alternately along the second direction, each positive pressure chamber is provided with at least one first air hole, the first air hole is used for conveying the positive pressure gas in the positive pressure chamber to the pole pieces through the separation holes, so that the pole pieces and the belt are separated.

4. The pole piece conveyor belt of claim 1, wherein, Along the first direction, a plurality of first separation holes are uniformly arranged on the belt.

5. The pole piece conveyor belt of claim 4, wherein, The first separation holes are waist-shaped or elliptical, and the second separation holes are circular.

6. The pole piece conveyor belt of claim 1, wherein, Each group of adsorption holes comprises a plurality of adsorption holes uniformly arranged on the belt along the first direction, negative pressure gas in the first vacuum chambers is conveyed to the pole pieces through the adsorption holes, and negative pressure gas in the second vacuum chambers is conveyed to the pole pieces through the adsorption holes.

7. The pole piece conveyor belt of claim 1, wherein, The positive pressure pipeline, the negative pressure pipeline and the speed regulating assembly are further included, the negative pressure pipeline is arranged on the supporting plate along the second direction, the negative pressure adsorption area is provided with at least one negative pressure pipeline in communication with the first vacuum chamber, the vacuum breaking area is provided with at least one negative pressure pipeline in communication with the second vacuum chamber and at least one positive pressure pipeline in communication with the positive pressure chamber; the speed regulating assembly is in communication with the positive pressure chamber, and the speed regulating assembly is used for adjusting the flow of the positive pressure gas delivered by the positive pressure chamber to the separation hole.

8. An electrode tab transfer device, characterized by, The first pole piece conveying belt and the second pole piece conveying belt are included, the first pole piece conveying belt and the second pole piece conveying belt are arranged along the first direction, and projections of the first pole piece conveying belt and the second pole piece conveying belt along the third direction at least partially overlap, a region of the first pole piece conveying belt close to the second pole piece conveying belt is provided with a vacuum breaking area, a region of the second pole piece conveying belt close to the vacuum breaking area is provided with a negative pressure adsorption area, and the first pole piece conveying belt and the second pole piece conveying belt are the pole piece conveying belt according to any one of claims 1 to 7.

9. The pole piece transfer device of claim 8, wherein, The vacuum breaking area of the first pole piece conveying belt close to the second pole piece conveying belt is a falling piece area; The falling piece area and the taking piece area are further included, the falling piece area, the taking piece area and the falling piece area are sequentially arranged along the first direction, the supporting plate of the falling piece area and the taking piece area is provided with the vacuum breaking area, the supporting plate between the falling piece area and the taking piece area is provided with the negative pressure adsorption area, the supporting plate between the falling piece area and the adsorption area is provided with the negative pressure adsorption area, the falling piece area is arranged on the first pole piece conveying belt, and the taking piece area is arranged on the second pole piece conveying belt.

10. The pole piece transfer device of claim 9, wherein, The detection assembly is further included, the detection assembly is arranged on the first pole piece conveying belt, the detection assembly is arranged at one end of the falling piece area away from the falling piece area, and the detection assembly is used for defect detection of the pole piece; The iron removal assembly is further included, the iron removal assembly is arranged on the first pole piece conveying belt and the second pole piece conveying belt, and the iron removal assembly is used for iron removal of the first pole piece conveying belt and the second pole piece conveying belt. The dust removal assembly is further included, the dust removal assembly is arranged on the first pole piece conveying belt and the second pole piece conveying belt, and the dust removal assembly is used for dust removal of the first pole piece conveying belt and the second pole piece conveying belt.

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