Pole piece transfer device

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a pole piece transfer device which comprises an adsorption mechanism and a temporary storage platform, the adsorption mechanism comprises a vacuum chuck, the vacuum chuck is used for adsorbing pole pieces, and the temporary storage platform is used for temporarily storing the pole pieces. A static electricity eliminating device is arranged on the vacuum suction cup and / or the temporary storage platform so that static electricity on the vacuum suction cup and / or the temporary storage platform can be led out to be grounded. According to the pole piece transfer device, the static electricity eliminating device is arranged on the vacuum suction cup and / or the temporary storage platform, so that static electricity generated by friction between the vacuum suction cup and the pole piece and static electricity generated by friction between the pole piece and the pole piece placed on the temporary storage platform can be led out through the static electricity eliminating device and are grounded; the probabilities of poor pole piece taking and poor pre-positioning are well reduced, and the product yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting and stacking machine technology, and in particular to an electrode transfer device. Background Technology

[0002] During the electrode handling process using the chuck of the slitting and stacking machine, a concentrated issue of poor electrode picking and misalignment occurred, severely impacting manufacturing yield. Adjustments to the vacuum negative pressure and chuck positioning accuracy did not significantly improve the situation, thus ruling out mechanical interference. Furthermore, testing revealed that the static electricity at the pre-positioning point of the machine reached KV, indicating that the root cause of the concentrated defects in the temporarily stored electrodes was static electricity generated by friction between the electrode feeding process and the chuck / pre-positioning platform. Utility Model Content

[0003] The purpose of this invention is to provide an electrode transfer device that can discharge static electricity generated by friction during electrode handling and temporary storage, thereby reducing the probability of poor electrode picking and poor pre-positioning, and improving product yield.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An electrode transfer device includes: an adsorption mechanism, the adsorption mechanism including a vacuum suction cup for adsorbing an electrode; a temporary storage platform for temporarily storing the electrode; and an electrostatic discharge device provided on the vacuum suction cup and / or the temporary storage platform to discharge static electricity from the vacuum suction cup and / or the temporary storage platform to ground.

[0006] The advantages of this electrode transfer device are as follows: Since the electrode transfer device is equipped with an electrostatic elimination device on the vacuum chuck and / or temporary storage platform, the static electricity generated by the friction between the electrode adsorbed by the vacuum chuck and the electrode, as well as the static electricity generated by the friction between the electrode placed on the temporary storage platform and the electrode, can be led out and grounded by the electrostatic elimination device. This effectively reduces the probability of poor electrode picking and poor pre-positioning, and improves the product yield.

[0007] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the electrode transfer device according to an embodiment of the present invention;

[0009] Figure 2 This is a schematic diagram of the adsorption mechanism and the first electrostatic elimination module structure of an embodiment of the present invention;

[0010] Figure 3 yes Figure 2 A partial exploded view of the structure shown;

[0011] Figure 4 This is a schematic diagram of the temporary storage platform and the second static elimination module according to an embodiment of the present invention;

[0012] Figure 5 yes Figure 4 The middle circle shows a schematic diagram of the structure at point A.

[0013] Figure label:

[0014] 100. Adsorption mechanism; 110. Vacuum suction cup; 200. Temporary storage platform; 300. Static elimination device; 310. First static elimination module; 311. Static discharge layer; 3111. Contact layer; 3112. Conductive layer; 31121. Receiving groove; 3113. Base layer; 3114. Metal mesh; 312. First discharge mechanism; 3121. Conductive block; 3122. First discharge element; 3123. First connector; 320. Second static elimination module; 321. Second discharge mechanism; 3211. Conductive element; 3212. Second discharge element; 3213. Second connector; 3214. Conductive adhesive; 400. Probe. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0016] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0018] This utility model discloses an electrode transfer device, with reference to... Figure 1 As shown, the electrode transfer device includes an adsorption mechanism 100 and a temporary storage platform 200. The adsorption mechanism 100 includes a vacuum suction cup 110 for adsorbing the electrode 10, and the temporary storage platform 200 for temporarily storing the electrode 10. An electrostatic discharge device 300 is provided on the vacuum suction cup 110 and / or the temporary storage platform 200 to conduct static electricity to ground. It can be understood that, because the electrode transfer device of this embodiment has an electrostatic discharge device 300 on the vacuum suction cup 110 and / or the temporary storage platform 200, the static electricity generated by the friction between the vacuum suction cup 110 adsorbing the electrode 10 and the electrode 10, as well as the static electricity generated by the friction between the electrode 10 placed on the temporary storage platform 200 and the electrode 10, can be conducted out and grounded through the electrostatic discharge device 300. This effectively reduces the probability of poor electrode 10 pickup and poor pre-positioning, thus improving product yield.

[0019] It should be noted that in some embodiments, the vacuum chuck 110 is equipped with an electrostatic eliminator 300. The static electricity generated by the friction between the vacuum chuck 110 and the electrode 10 can be conducted away and grounded by the electrostatic eliminator 300. This not only reduces the probability of defective electrode 10 pickup but also reduces the static electricity accumulated on the temporary storage platform 200, thereby reducing the probability of pre-positioning defects. In some embodiments, the temporary storage platform 200 is equipped with an electrostatic eliminator 300. When the vacuum chuck 110 picks up the electrode 10 and places it on the temporary storage platform 200, and before the vacuum chuck 110 releases the electrode 10, the electrode 10 is simultaneously in contact with both the vacuum chuck 110 and the temporary storage platform 200. The electrostatic eliminator 300 on the temporary storage platform 200 can conduct the static electricity generated on the electrode 10 and ground it. In other words, whether the static eliminator 300 is only installed on the vacuum chuck 110, on the temporary storage platform 200, or on both the temporary storage platform 200 and the vacuum chuck 110, it can effectively reduce the probability of poor electrode pick-up and poor pre-positioning, and improve the manufacturing yield.

[0020] refer to Figures 2-3As shown, the static eliminator 300 includes a first static eliminator module 310, which includes a static discharge layer 311 and a first discharge mechanism 312. The static discharge layer 311 is mounted on a vacuum chuck 110 and has through holes that at least partially communicate with the suction holes of the vacuum chuck 110. One end of the first discharge mechanism 312 is electrically connected to the static discharge layer 311, and the other end is grounded. It is understood that the static discharge layer 311 can collect the static electricity generated during the handling of the electrode 10 and then discharge it from the first discharge mechanism 312. By placing the static discharge layer 311 on the vacuum chuck 110, the structure of the entire first static eliminator module 310 can be simplified, reducing equipment modification costs. Furthermore, it ensures that all static electricity generated on the electrode 10 is discharged, greatly improving the probability of poor electrode removal in the prior art. The perforations on the electrostatic lead-out layer 311 are at least partially connected to the adsorption holes on the vacuum chuck 110, which avoids the adverse effects of the electrostatic lead-out layer 311 on the adsorption of the electrode 10 by the vacuum chuck 110, and ensures that the vacuum chuck 110 can stably adsorb and transport the electrode 10.

[0021] Optionally, the projection of the perforation on the suction cup completely covers the suction hole of the vacuum suction cup 110.

[0022] Optionally, the end of the vacuum chuck 110 is provided with a tab suction block 111, and an electrostatic discharge layer 311 is installed on the tab suction block 111. In actual operation, the electrostatic discharge layer 311 can conduct static electricity generated on the tab of the electrode, which greatly improves the probability of poor electrode picking in the prior art.

[0023] refer to Figure 3As shown, the electrostatic discharge layer 311 includes a contact layer 3111, a conductive layer 3112, and a base layer 3113 stacked together. The base layer 3113 abuts against the tab 111 of the vacuum chuck 110, and a portion of the conductive layer 3112 abuts against the tab 111 of the vacuum chuck 110. It is understood that during actual handling, the base layer 3113 can accommodate the bending deformation of the electrode 10, preventing tab imprinting. The perforations penetrating the base layer 3113 correspond to the adsorption holes on the tab 111, ensuring a relatively uniform adsorption force of the vacuum chuck 110 on the electrode 10. Both the contact layer 3111 and the base layer 3113 are made of electrostatic conductive material, possessing moderate conductivity and capable of conducting static electricity. The static electricity generated on the electrode 10 can be transferred to the conductive layer 3112 through the conductivity of the contact layer 3111. Part of the conductive layer 3112 abuts against the electrode tab 111, allowing the charge to be conducted from the conductive layer 3112 to the electrode tab 111. The charge is then led out through the first lead-out mechanism 312 connected to the vacuum chuck 110 and grounded, thus ensuring the static electricity elimination effect on the electrode 10. The contact layer 3111 directly contacts the electrode 10, preventing scratches while ensuring vacuum adsorption stability through perforations. Furthermore, the contact layer 3111 can conduct static electricity from the electrode 10 to the conductive layer 3112.

[0024] Of course, in other embodiments of this utility model, the electrostatic lead-out layer 311 can also be disposed at other locations of the vacuum suction cup 110, and is not limited to the tab suction block 111.

[0025] Optionally, the contact layer 3111 can be formed by partially insulating a polyimide film with added conductive material. Of course, in other embodiments of this invention, the specific material of the contact layer 3111 can be selected according to actual needs.

[0026] Optionally, the conductive layer 3112 has a receiving groove 31121, the base layer 3113 is disposed within the receiving groove 31121, and a metal mesh 3114 is provided between the base layer 3113 and the bottom wall of the receiving groove 31121. It is understood that embedding the base layer 3113 within the conductive layer 3112 can reduce the overall thickness of the electrostatic discharge layer 311, which is beneficial for reducing manufacturing costs. The added metal mesh 3114 can, on the one hand, improve the strength of the electrostatic discharge layer 3111, and on the other hand, also play an auxiliary role in charge dissipation. Further optionally, the conductive layer 3112 is made of nano-silver conductive silicone, and the metal mesh 3114 is made of copper mesh. Of course, in other embodiments of this utility model, the materials of the conductive layer 3112 and the base layer 3113 can be adjusted according to actual needs.

[0027] Optionally, in other embodiments, the conductive layer 3112 can also be integrally formed with the metal mesh 3114 to achieve electrostatic conduction while having a certain strength.

[0028] Optionally, the metal mesh 3114 is a wavy mesh with a crest spacing of 1.5mm-2mm. It is understood that setting the metal mesh 3114 to a wavy shape increases the surface area, which is beneficial for more stable static electricity discharge and reduces the probability of deformation of the conductive layer 3112. The crest spacing can be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, and 2mm, or other values ​​within the range of 1.5mm-2mm, not limited to the examples mentioned above. In other embodiments of this invention, the crest spacing can also be selected according to actual needs, and is not limited to the range of 1.5mm-2mm.

[0029] Optionally, the thickness of the contact layer 3111 is 0.05mm-0.1mm. It is understood that excessively thick or thin contact layer 3111 will affect the antistatic performance and electrostatic discharge rate. In this embodiment, a thickness of 0.05mm-0.1mm for the contact layer 3111 ensures both antistatic performance and electrostatic discharge rate. The thickness of the contact layer 3111 can be selected from 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, or 0.1mm, or other values ​​within the range of 0.05mm-0.1mm, depending on actual needs. In other embodiments of this invention, the thickness of the contact layer 3111 can also be selected from other values, not limited to the range of 0.05mm-0.1mm.

[0030] Optionally, the thickness of the substrate layer 3113 is 0.45mm-0.55mm. The thickness of the substrate layer 3113 can be 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.5mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, or 0.55mm, or other values ​​within the range of 0.45mm-0.55mm, not limited to the examples mentioned above. In other embodiments of this utility model, the thickness of the substrate layer 3113 can be selected according to actual needs, and is not limited to the range of 0.45mm-0.55mm.

[0031] Optionally, the thickness of the conductive layer 3112 is 0.45mm-0.55mm. The thickness of the conductive layer 3112 can be 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.5mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, or 0.55mm, or other values ​​within the range of 0.45mm-0.55mm, not limited to the examples mentioned above. In other embodiments of this invention, the thickness of the conductive layer 3112 can be selected according to actual needs, and is not limited to the range of 0.45mm-0.55mm.

[0032] refer to Figure 3 As shown, the first lead-out mechanism 312 includes a conductive block 3121 and a first lead-out member 3122. The conductive block 3121 is installed on the side of the vacuum chuck 110 away from the electrostatic discharge layer 311. One end of the first lead-out member 3122 is connected to the conductive block 3121 through a first connector 3123, and the other end is grounded. It can be understood that during actual operation, charge is transferred from the conductive layer 3112 to the vacuum chuck 110, then from the vacuum chuck 110 to the conductive block 3121, and finally led out by the first lead-out member 3122. Installing the first lead-out mechanism 312 on the side of the vacuum chuck 110 away from the electrostatic discharge layer 311 facilitates grounding, ensuring stable electrostatic discharge, and also prevents the first lead-out mechanism 312 from affecting the normal adsorption of the electrode 10 by the vacuum chuck 110.

[0033] Optionally, the first connector 3123 can be selected from structures such as screws, fixing pins, and rivets, depending on actual needs. In other embodiments of this utility model, the conductive block 3121 can also be connected to the first lead-out member 3122 by other means such as snap-fit ​​connection or bonding with conductive adhesive 3214, and is not limited to the connection method of the first connector 3123 in this embodiment.

[0034] Optionally, conductive block 3121 can be made of copper or other conductive materials, depending on actual needs.

[0035] Optionally, a tab is provided on one side of the electrode 10, and the first static elimination module 310 is provided on one side of the vacuum chuck 110, corresponding to the position of the tab on the electrode 10, mainly used to discharge static electricity from the tab.

[0036] refer to Figure 4As shown, the static electricity elimination device 300 includes a second static electricity elimination module 320, which includes a conductive coating and a second lead-out mechanism 321. The conductive coating is applied to the temporary storage platform 200, and the second lead-out mechanism 321 is mounted on the side wall of the temporary storage platform 200 and grounded. It is understood that when the electrode 10 is placed on the temporary storage platform 200, the conductive coating can conduct the static electricity generated on the electrode 10 to the second lead-out mechanism 321, thereby ensuring the positioning accuracy of the electrode 10.

[0037] Optionally, the conductive coating can be formed by uniformly spraying conductive materials such as metal nanoparticles.

[0038] Optionally, the temporary storage platform 200 is made of an alumina ceramic substrate, which combines wear resistance and scratch resistance.

[0039] refer to Figure 5 As shown, the second lead-out mechanism 321 includes a conductive element 3211 and a second lead-out element 3212. The conductive element 3211 is mounted on the side wall of the temporary storage platform 200. One end of the second lead-out element 3212 is connected to the conductive element 3211 via a second connector 3213, and the other end is grounded. In actual operation, the charge is coated onto the conductive element 3211 by the conductive coating and finally led out by the second lead-out element 3212. Mounting the conductive element 3211 on the side wall of the temporary storage platform 200 facilitates grounding, thereby ensuring that static electricity can be stably led out. Furthermore, it prevents the second lead-out mechanism 321 from affecting the normal bearing capacity of the platform against the electrode 10.

[0040] Optionally, the conductive element 3211 is made of copper strip with a conductivity ≥98%, a thickness ≥0.5mm, and a nickel-plated surface for corrosion resistance. Of course, in other embodiments of this invention, the conductive element 3211 can be made of other materials according to actual needs.

[0041] Optionally, the second connector 3213 can be selected from structures such as screws, fixing pins, and rivets, depending on actual needs. In other embodiments of this utility model, the conductive element 3211 can also be connected to the second lead-out element 3212 by other means such as snap-fit ​​connection or bonding with conductive adhesive 3214, and is not limited to the connection method of the second connector 3213 in this embodiment.

[0042] Optionally, the contact surface between the conductive component 3211 and the temporary storage platform 200 may be made of conductive adhesive 3214 (surface resistance ≤ 10 Ω·cm). 3 Ω) Fill the gaps to reduce contact resistance.

[0043] Optionally, there are two second lead-out mechanisms 321, respectively disposed on opposite sides of the temporary storage platform 200. Each second lead-out mechanism 321 includes two second lead-out members 3212, which are connected to both ends of the conductive member 3211. This allows for the discharge of as much static electricity as possible from the electrode 10, reducing the static electricity value on the electrode 10 and ensuring manufacturing yield.

[0044] refer to Figure 4 As shown, the electrode transfer device also includes multiple probes 400, which are embedded in the temporary storage platform 200. The top of each probe 400 is flush with the surface of the conductive coating. The probes 400 are used to detect the magnitude of static electricity between the temporary storage platform 200 and the electrode 10. It is understood that the bottom of the probes 400 is connected to the signal acquisition module via an FPC flexible circuit board, supporting multi-channel synchronous sampling (accuracy ±1%) to monitor the static electricity value on the electrode 10 after static electricity elimination. Furthermore, the signal acquisition module can communicate with an industrial control computer to achieve static electricity threshold alarms (e.g., a warning when the static electricity value reaches ±100V, and an alarm and shutdown when it exceeds ±150V).

[0045] Optionally, the probe 400 has a diameter ≤1mm, is gold-plated, and has a contact resistance ≤0.05Ω. Of course, in other embodiments of this invention, the size and material of the probe 400 can be adjusted according to actual needs.

[0046] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment 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.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pole piece transfer device characterized by, include: An adsorption mechanism (100) includes a vacuum suction cup (110) for adsorbing electrode sheets (10); A temporary storage platform (200) is used to temporarily store the electrode sheet (10); The vacuum chuck (110) and / or the temporary storage platform (200) are provided with an electrostatic discharge device (300) to conduct static electricity from the vacuum chuck (110) and / or the temporary storage platform (200) to ground.

2. The pole piece transfer device of claim 1, wherein, The static electricity elimination device (300) includes a first static electricity elimination module (310), which includes: An electrostatic discharge layer (311) is installed on the vacuum chuck (110), and the electrostatic discharge layer (311) is provided with a perforation that is at least partially connected to the adsorption hole of the vacuum chuck (110). The first lead-out mechanism (312) has one end electrically connected to the electrostatic lead-out layer (311) and the other end grounded.

3. The pole piece transfer device of claim 2, wherein, The end of the vacuum chuck (110) is provided with a tab suction block (111), and the electrostatic discharge layer (311) is installed on the tab suction block (111).

4. The pole piece transfer device of claim 2, wherein, The electrostatic discharge layer (311) includes a contact layer (3111), a conductive layer (3112), and a base layer (3113) stacked together. The base layer (3113) abuts against the vacuum chuck (110), and a portion of the conductive layer (3112) abuts against the vacuum chuck (110).

5. The pole piece transfer device of claim 4, wherein, The conductive layer (3112) has a receiving groove (31121), the base layer (3113) is disposed in the receiving groove (31121), and a metal mesh (3114) is provided between the base layer (3113) and the bottom wall of the receiving groove (31121).

6. The pole piece transfer device of claim 5, wherein, The metal mesh (3114) is a wavy mesh with a crest spacing of 1.5mm-2mm.

7. The pole piece transfer device of claim 5, wherein, The thickness of the contact layer (3111) is 0.05mm-0.1mm; and / or: The thickness of the base layer (3113) is 0.45mm-0.55mm; and / or: The thickness of the conductive layer (3112) is 0.45mm-0.55mm.

8. The pole piece transfer device of claim 2, wherein, The first extraction mechanism (312) includes: A conductive block (3121) is mounted on the side of the vacuum chuck (110) away from the electrostatic discharge layer (311); The first lead-out member (3122) has one end connected to the conductive block (3121) via the first connector (3123), and the other end is grounded.

9. The pole piece transfer apparatus of claim 1, wherein, The static electricity elimination device (300) includes a second static electricity elimination module (320), which includes: A conductive coating is applied to the temporary storage platform (200); The second lead-out mechanism (321) is installed on the side wall of the temporary storage platform (200) and grounded.

10. The pole piece transfer device of claim 9, wherein, The second extraction mechanism (321) includes: A conductive element (3211) is mounted on the side wall of the temporary storage platform (200); The second lead-out member (3212) has one end connected to the conductive member (3211) via the second connector (3213), and the other end is grounded.

11. The pole piece transfer device of claim 9, wherein, It also includes a plurality of probes (400), which are embedded in the temporary storage platform (200). The top of the probes (400) is flush with the surface of the conductive coating. The probes (400) are used to detect the electrostatic magnitude between the temporary storage platform (200) and the electrode (10).

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