Sucking disc and battery pole piece sucking device

Abstract

The utility model relates to a sucking disc and a battery pole piece sucking device. The sucking disc comprises a main body part and a sucking disc part, the suction cup part is connected to the main body part, a main suction opening is formed in the center of the suction cup part and used for generating suction force, and a flow dividing assembly is arranged in the circumferential direction of the main suction opening and used for forming a negative suction channel. The suction surface of the suction cup part and the surface of the battery pole piece form the closed negative pressure cavity, so that the battery pole piece can be tightly adhered to the suction cup, the suction cup part is also provided with the shunting assembly, and the shunting assembly forms a negative suction channel in the negative pressure cavity, so that the pressure area on the battery pole piece is increased, and the pressure acting on the battery pole piece is reduced; the main adsorption opening is prevented from being attached to the battery pole piece, and the vertical acting force of the suction force of the main adsorption opening is prevented from damaging the battery pole piece by perforation, wrinkling and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of battery assembly, in particular to a suction cup and a battery pole piece suction device. Background Art

[0002] With the development of renewable energy and electric transportation technology, the development of battery technology has become crucial. The energy density of the battery is an important indicator for evaluating battery performance, which determines the battery's energy storage capacity and usage time. With the growing demand for electric vehicles and portable electronic devices, the requirements for battery energy density are also increasing.

[0003] In the battery assembly process, the stacking of battery pole pieces is a crucial step. The process of stacking battery pole pieces has a significant impact on the performance and cost of the battery. Especially in the production of high energy density batteries, the accuracy, uniformity and stability of electrode stacking are particularly important for battery performance.

[0004] In the conventional technology, the suction cup suction port of the sucking device directly faces the electrode. In the process of sucking the battery electrode, it is easy to cause damage and wrinkles to the electrode, thus affecting the battery performance. Utility Model Content

[0005] Based on this, it is necessary to provide a suction cup and a battery electrode suction device to address the problem that the suction force of the suction cup can easily cause damage to the battery electrode when sucking the electrode.

[0006] In a first aspect, the utility model provides a suction cup, the suction cup comprising:

[0007] Main body;

[0008] The suction cup part is connected to the main body part; a main suction port is arranged at the center of the suction cup part for generating suction; a flow diversion component is arranged along the circumference of the main suction port, and the flow diversion component is used to form a negative suction channel.

[0009] In one embodiment, the flow diversion component includes:

[0010] The first diverter ring is arranged along the circumference of the main suction port. The diameter of the first diverter ring is greater than the diameter of the main suction port. The first diverter ring includes a plurality of first arc-shaped protrusions. There is a gap between each of the first arc-shaped protrusions to form a first negative suction channel.

[0011] In one embodiment, the flow diversion component further comprises:

[0012] The second diverter ring is arranged along the circumference of the first diverter ring. The diameter of the second diverter ring is greater than the diameter of the first diverter ring. The second diverter ring includes a plurality of second arc-shaped protrusions. There is a gap between each of the second arc-shaped protrusions to form a second negative suction channel.

[0013] In one of the embodiments, the first negative suction channel and the second negative suction channel are radially staggered.

[0014] In one embodiment, the gap between the first diverter ring and the second diverter ring is a third negative suction channel.

[0015] In one embodiment, the main body is provided with an air suction channel along the central axis, the air suction channel runs through the main body and is connected to the main suction port.

[0016] In a second aspect, the utility model provides a battery pole piece suction device for installing the suction cup in any other embodiment, the battery pole piece suction device comprising:

[0017] Mounting plate; and

[0018] The pressing plate is connected to the mounting plate, and the suction cup is installed on the pressing plate for adsorbing the battery pole piece.

[0019] In one of the embodiments, the pressure plate is provided with a plurality of first through holes, the mounting plate is provided with a plurality of second through holes corresponding to the plurality of first through holes, a suction straw is provided between each first through hole and the corresponding second through hole, one end of the suction straw is fixed to the mounting plate, and the other end of the suction straw is passed through the first through hole and connected to the main body of the suction cup.

[0020] In one embodiment, a plurality of elastic components are provided corresponding to the plurality of straws, each elastic component is sleeved on the corresponding straw, and one end of the elastic component is connected to the mounting plate, and the other end is connected to the pressing plate.

[0021] In one of the embodiments, a limiting member is provided in the second through hole corresponding to the straw, and the limiting member is used to limit the position of the straw in the horizontal direction.

[0022] The above-mentioned suction cup and battery pole piece suction device form a closed negative pressure cavity through the suction surface of the suction cup part of the suction cup and the surface of the battery pole piece, so that the battery pole piece can be tightly adhered to the suction cup. A shunt component is also provided on the suction cup part. The shunt component forms a negative suction channel in the negative pressure cavity, which increases the pressure area on the battery pole piece, reduces the pressure acting on the battery pole piece, and avoids the main suction port and the battery pole piece being fitted. The vertical force of the suction of the main suction port causes perforation, wrinkles and other damage to the battery pole piece; the shunt component disperses the suction of the main suction port while maintaining the suction on the battery pole piece, and the negative pressure suction of the negative suction channel is dispersed to the surface of the battery pole piece, thereby reducing damage to the battery pole piece and improving the yield rate of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a suction cup in one embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram showing the structure of the adsorption surface of the suction cup part in one embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a battery pole piece suction device in one embodiment of the utility model.

[0027] The reference numerals in the specific implementation manner are as follows:

[0028] Suction cup 10, pressing plate 20, mounting plate 30, main body 102, suction cup part 103, main suction port 104, diverter assembly 106, first diverter ring 108, second diverter ring 110, first negative suction channel 112, second negative suction channel 114, third negative suction channel 116, first through hole 202, elastic component 204, suction tube 206, second through hole 302, sleeve 304, limiter 306, fixing part 308. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] The applicant noted that the thickness of the battery electrode of a common rate-type battery is: 70-90 μm for the positive electrode and 50-70 μm for the negative electrode, so the battery electrode is extremely thin and has low strength; and the suction port of the suction cup of the suction device directly faces the battery electrode, and the suction force of the suction port acts vertically on the battery electrode, which can easily cause wrinkles on the battery electrode. When the suction cup is in close contact with the battery electrode, the suction force of the suction port directly acts on the battery electrode, causing the battery electrode to be subjected to greater pressure at the suction port, which can easily cause damage to the battery electrode.

[0037] Based on the above considerations, in order to improve the performance of the battery and reduce the impact on the battery electrode structure during the battery electrode suction process, a suction cup is provided. Figure 1 , Figure 1 A schematic diagram of the structure of a suction cup in an embodiment of the utility model is shown. The suction cup 10 provided in an embodiment of the utility model includes a main body 102 and a suction cup part 103; the suction cup part 103 is connected to the main body 102, a main suction port 104 is arranged at the center of the suction cup part 103, and a diversion component 106 is arranged circumferentially along the main suction port 104.

[0038] Specifically, the suction cup portion 103 is provided with an adsorption surface in contact with the battery pole piece. The adsorption surface is attached to the surface of the battery pole piece, and the gas between the adsorption surface of the suction cup portion 103 and the battery pole piece is discharged, thereby generating a higher external pressure, and a lower pressure area is generated between the suction cup 10 and the surface of the battery pole piece, that is, a negative pressure cavity, so that the suction cup 10 generates an adsorption force, and the adsorption surface of the suction cup portion 103 can be tightly adhered to the surface of the battery pole piece. An air suction channel running through the main body 102 is opened along the central axis of the suction cup portion 103. The air suction channel forms a main adsorption port 104 at the adsorption surface of the suction cup portion 103. The gas between the adsorption surface of the suction cup portion 103 and the battery pole piece is discharged through the main adsorption port 104, creating a negative pressure cavity between the adsorption surface and the battery pole piece. Furthermore, when the battery pole piece is released, the suction cup 10 is filled with gas through the main adsorption port 104 to reduce the pressure in the negative pressure cavity. The suction cup portion 103 also includes a shunt component 106, which is a convex structure with the same curvature as the main suction port 104. It is close to the edge of the main suction port 104 and is arranged circumferentially along the main suction port 104. The shunt component 106 is used to form a negative suction channel in the negative pressure chamber. When the main suction port 104 discharges the gas between the suction surface of the suction cup portion 103 and the battery electrode, the shunt component 106 contacts the battery electrode, and the suction generated by the main suction port 104 is dispersed to the surface of the battery electrode through the shunt component 106.

[0039] In the present embodiment, a closed negative pressure cavity is formed by the adsorption surface of the suction cup part and the surface of the battery electrode, so that the battery electrode can be tightly adhered to the suction cup; the shunt component forms a negative suction channel in the negative pressure cavity, which increases the pressure-bearing area of ​​the battery electrode, reduces the pressure acting on the battery electrode, and avoids the vertical force of the suction of the main adsorption port causing perforation, wrinkling and other damage to the battery electrode when the main adsorption port is in contact with the battery electrode; the shunt component disperses the suction of the main adsorption port while maintaining the suction on the battery electrode, and the negative pressure suction of the negative suction channel is dispersed to the surface of the battery electrode, thereby increasing the adsorption area, reducing damage to the battery electrode, and improving the yield rate of the battery.

[0040] Please continue reading Figure 1In some embodiments, the flow diverter assembly 106 includes a first flow diverter ring 108, which is arranged along the circumference of the main suction port 104, and the diameter of the first flow diverter ring 108 is greater than the diameter of the main suction port 104. The first flow diverter ring 108 includes a plurality of first arc-shaped protrusions, and there is a gap between each first arc-shaped protrusion to form a first negative suction channel 112. Optionally, the flow diverter assembly also includes a second flow diverter ring 110, which is arranged along the circumference of the first flow diverter ring 108, and the diameter of the second flow diverter ring 110 is greater than the diameter of the first flow diverter ring 108. The second flow diverter ring 110 includes a plurality of second arc-shaped protrusions, and there is a gap between each second arc-shaped protrusion to form a second negative suction channel 114. The main suction port 104, the first flow diverter ring 108, and the second flow diverter ring 110 are concentric circles with the center point of the suction cup portion 103 as the center, and the diameters increase successively.

[0041] Exemplarily, in the direction of the central axis of the suction cup, the suction cup adsorption surface is umbrella-shaped, and the center of the suction cup adsorption surface is higher than the edge of the suction cup adsorption surface; the protrusion heights of the first arc-shaped protrusion and the second arc-shaped protrusion are less than the height difference between the center of the suction cup adsorption surface and the edge of the suction cup adsorption surface. When the suction cup 10 adsorbs the battery pole piece, the suction cup adsorption surface and the surface of the battery pole piece form a negative pressure cavity, and the battery pole piece contacts the surface of the first arc-shaped protrusion and the surface of the second arc-shaped protrusion. The first arc-shaped protrusion and the second arc-shaped protrusion provide support force for the battery pole piece, and the first negative suction channel 112, the second negative suction channel 114 and the main adsorption port 104 provide adsorption force, so that the battery pole piece is adsorbed on the suction cup 10.

[0042] Optionally, depending on the size of the suction cup 10 and the type of battery electrode, the shunt assembly 106 may include only the first shunt ring 108, or include the first shunt ring 108, the second shunt ring 110 and the third shunt ring, etc.

[0043] In this embodiment, by providing a first shunt ring and a second shunt ring, the force generated by the main adsorption port is evenly dispersed on the battery pole piece, thereby increasing the effective area of ​​the adsorption force and reducing the pressure acting on the battery pole piece. The first arc-shaped protrusion and the second arc-shaped protrusion provide supporting force for the battery pole piece, thereby effectively avoiding wrinkles on the battery pole piece. On the other hand, the protrusion height between the first arc-shaped protrusion and the second arc-shaped protrusion is limited, so that the battery pole piece always remains flat during the adsorption process, thereby reducing the impact on the battery pole piece structure.

[0044] Combination Figure 2 As shown, Figure 2The schematic diagram of the structure of the suction surface of the suction cup part in one embodiment of the utility model is shown. In some embodiments, the first negative suction channel 112 and the second negative suction channel 114 are radially staggered, and the gap between the first diverter ring 108 and the second diverter ring 110 is the third negative suction channel 116. The angle between the two ends of the first arc-shaped protrusion and the center of the circle is smaller than the angle between the two ends of the second arc-shaped protrusion and the center of the circle, that is, the first negative suction channel 112 is larger than the second negative suction channel 114.

[0045] Exemplarily, in the same direction, the first negative suction channel 112 corresponds to the second arc-shaped protrusion, and the first arc-shaped protrusion corresponds to the second negative suction channel 114. When the main suction port 104 discharges the gas in the cavity, a negative pressure airflow is generated at the main suction port 104, and the negative pressure airflow is dispersed by the first arc-shaped protrusion, and the negative pressure airflow reaches the second arc-shaped protrusion via the first negative suction channel 112. The second arc-shaped protrusion again disperses the negative pressure airflow, and the negative pressure airflow passes through the second negative suction channel 114. Therefore, the negative suction channel is dispersed into multiple adsorption branches by the shunt component 106, and the battery pole piece is adsorbed through multiple adsorption branches.

[0046] In the present embodiment, the first negative suction channel and the second negative suction channel are radially staggered to avoid the adsorption force acting in the same radial direction, and the negative pressure airflow is dispersed by the first arc-shaped protrusion and the second arc-shaped protrusion, so as to form a plurality of adsorption airflows located in the first negative suction channel, the second negative suction channel and the third negative suction channel, and evenly disperse the points of action of the adsorption force on the battery pole sheet, thereby increasing the action area of ​​the adsorption force. When adsorbing the battery pole sheet, the adsorption force can act on the battery pole sheet more evenly and gently, and even in the case of thinner battery pole sheets, wrinkles and damages to the battery pole sheets can be avoided.

[0047] See also Figure 3 , Figure 3 A schematic structural diagram of a battery pole piece suction device in an embodiment of the utility model is shown. In some embodiments, the battery pole piece suction device is used to install the suction cup in any embodiment thereof. The battery pole piece suction device includes a mounting plate 30 and a pressing plate 20. The pressing plate 20 is connected to the mounting plate 30, and the suction cup 10 is installed on the pressing plate 20.

[0048] Exemplarily, the surface of the battery electrode is divided into an adsorption portion and a non-adsorption portion, the suction cup 10 in the battery electrode suction device is in contact with the adsorption portion of the battery electrode, and the non-adsorption portion of the battery electrode is in contact with the pressing plate 20, the battery electrode is tightly fitted with the pressing plate 20 through the suction cup 10, and the battery electrode is moved from the cutting line to the stacking platform. During the transportation process, the suction cup 10 always adsorbs the adsorption portion of the battery electrode, and the non-adsorption portion of the battery electrode is tightly attached to the side of the pressing plate 20 away from the mounting plate 30; after the battery electrode is transported to the battery electrode stacking platform, the pressing plate 20 aligns the battery electrode and presses it on the surface of the previous battery electrode, and the suction cup 10 releases the battery electrode, so that the battery electrode is aligned and stacked with the previous battery electrode.

[0049] In this embodiment, the battery electrode is adsorbed by a suction cup and is made to fit tightly against the pressing plate, thereby reducing external extrusion and friction on the battery electrode during transportation, reducing surface damage and scratches, and protecting the quality and appearance of the battery electrode; the battery electrode is tightly attached to the pressing plate to prevent damage to the battery electrode due to shaking or airflow during transportation; placing the battery electrode on the previous battery electrode and releasing it can also prevent the battery electrode from being offset during the release process, reducing the alignment of the stack, and other problems, thereby improving the stability of the quality of the battery product.

[0050] Please continue reading Figure 3 In some embodiments, the pressing plate 20 is provided with a plurality of first through holes 202, and the mounting plate 30 is provided with a plurality of second through holes 302 corresponding to the plurality of first through holes 202, and a suction tube 206 is provided between each first through hole 202 and the corresponding second through hole 302, one end of the suction tube 206 is fixed to the mounting plate 30, and the other end of the suction tube 206 is passed through the first through hole 202 and connected to the main body 102 of the suction cup 10.

[0051] Specifically, multiple first through holes are evenly distributed on the pressure plate 20, the diameter of the first through hole 202 is slightly larger than the maximum diameter of the suction cup part, the center of the first through hole 202 and the center of the suction cup part 103 are located on the same axis, the suction cup 10 can be freely inserted in the first through hole 202, and the suction cup part 103 is flush with the surface of the pressure plate 20 away from the mounting plate 30; when the suction cup 10 absorbs the battery pole piece, the battery pole piece remains flat at the suction cup 10 and the pressure plate 20, and the edges of the suction cup 10 and the pressure plate 20 also remain flush.

[0052] The mounting plate 30 defines a second through hole 302 corresponding to the first through hole 202, and the second through hole 302 is connected to a limiter 306, and the limiter 306 is used to limit the movement of the straw in the horizontal direction. The limiter 306 includes a sleeve 304 and a fixing portion 308; the sleeve 304 is used to pass through and limit the movement of the straw 206 in the horizontal direction; the first end of the fixing portion 308 is disposed on the mounting plate 30 and connected to the second through hole, and the second end of the fixing portion 308 is connected to the sleeve 304. Exemplarily, the fixing portion 308 is fixedly connected to the mounting plate 30 by means of screwing, clamping or riveting, so as to limit the movement of the straw 206 in the horizontal direction. Optionally, a limiter is also provided on the pressing plate 20 to limit the movement of the suction tube 206 in the horizontal direction, and the position of the suction cup 10 in the first through hole is adjusted by the limiter 306, such as making the suction cup portion 103 flush with the surface of the pressing plate 20 away from the mounting plate 30. At this time, the positional relationship between the suction cup 10 and the pressing plate 20 remains stable and is not affected by the movement of the pressing plate 20 and the mounting plate 30. One end of the suction tube 206 is connected to the sleeve 304, and the other end is connected to the main body 102 of the suction cup. The suction tube 206 can be freely extended and retracted between the mounting plate 30 and the pressing plate 20. The suction tube 206 is connected to a vacuum pump to exhaust the gas in the suction cup 10, so that a negative pressure chamber is formed inside the suction cup 10.

[0053] The first through hole 202 on the pressing plate 20 is connected to the second through hole 302 on the mounting plate 30 through an elastic component 204, and the first end of the elastic component 204 and the second end of the elastic component 204 are respectively connected to the mounting plate 30 and the two opposite sides of the pressing plate 20. Optionally, the elastic component 204 is a spring, the first end of the spring is connected to the mounting plate 30, the second end of the spring is connected to the pressing plate 20, and the spring is sleeved outside the suction tube 206. In the process of transporting the battery electrode sheet, the suction cup 10 is arranged on the four corners of the pressing plate 20 to absorb the four corners of the battery electrode sheet, and the non-absorbed part of the battery electrode sheet is closely attached to the bottom surface of the pressing plate 20; after the battery electrode sheet is transported to the stacking platform, the pressing plate 20 carries the battery electrode sheet and presses it onto the previous battery electrode sheet, and the elastic component 204 buffers the downward pressure of the pressing plate 20 when pressing, and at the same time, the suction tube 206 shrinks following the elastic component 204.

[0054] In this embodiment, by respectively providing the first through hole and the second through hole on the pressing plate and the mounting plate, when the suction cup is fixed on the mounting plate, the suction cup can freely pass through the pressing plate and the mounting plate, and expand and contract with the elastic component, thereby ensuring that when the elastic component buffers the pressure of the pressing plate, the suction tube is stable in the horizontal and vertical directions, thereby avoiding fluctuations in the suction force of the suction cup; the suction cup is arranged on the four corners of the pressing plate to ensure that most areas of the battery electrode are in close contact with the pressing plate, thereby preventing the battery electrode from being damaged due to shaking or air flow fluctuations when the battery electrode is transferred from the cutting line to the stacking platform, thereby reducing the generation of wrinkles on the battery electrode and maintaining stable battery performance.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A suction cup, characterized in that: The suction cup comprises: Main body; The suction cup part is connected to the main body part; a main suction port is arranged at the center of the suction cup part for generating suction; a flow diversion component is arranged along the circumference of the main suction port, and the flow diversion component is used to form a negative suction channel.

2. The suction cup according to claim 1, characterized in that The diversion component comprises: The first diverter ring is arranged along the circumference of the main suction port. The diameter of the first diverter ring is greater than the diameter of the main suction port. The first diverter ring includes a plurality of first arc-shaped protrusions. There is a gap between each of the first arc-shaped protrusions to form a first negative suction channel.

3. The suction cup according to claim 2, characterized in that The diversion component also includes: The second diverter ring is arranged along the circumference of the first diverter ring. The diameter of the second diverter ring is greater than the diameter of the first diverter ring. The second diverter ring includes a plurality of second arc-shaped protrusions. There is a gap between each of the second arc-shaped protrusions to form a second negative suction channel.

4. The suction cup according to claim 3, characterized in that The first negative suction channel and the second negative suction channel are radially staggered.

5. The suction cup according to claim 3, characterized in that The gap between the first splitter ring and the second splitter ring is a third negative suction channel.

6. The suction cup according to claim 1, characterized in that The main body is provided with an air suction channel along the central axis, and the air suction channel penetrates the main body and is connected with the main suction port.

7. A battery pole piece suction device, used for installing the suction cup according to any one of claims 1 to 6, characterized in that: The battery pole piece suction device comprises: Mounting plate; and A pressing plate is connected to the mounting plate, and the suction cup is mounted on the pressing plate for adsorbing the battery pole piece.

8. The device according to claim 7, characterized in that The pressure plate is provided with a plurality of first through holes, and the mounting plate is provided with a plurality of second through holes corresponding to the plurality of first through holes, a suction straw is provided between each of the first through holes and the corresponding second through hole, one end of the suction straw is fixed to the mounting plate, and the other end of the suction straw is passed through the first through hole and connected to the main body of the suction cup.

9. The device according to claim 8, characterized in that A plurality of elastic components are provided corresponding to the plurality of straws, each of the elastic components is sleeved on the corresponding straw, and one end of the elastic component is connected to the mounting plate, and the other end is connected to the pressing plate.

10. The device according to claim 9, characterized in that The second through hole is provided with a limiting piece corresponding to the straw, and the limiting piece is used to limit the position of the straw in the horizontal direction.

Images