Solder-ribbon-gripping assembly, solder ribbon conveying device and solder ribbon conveying method

Abstract

The present disclosure relates to a solder-ribbon-gripping assembly, a solder ribbon conveying device and a solder ribbon conveying method. The solder-ribbon-gripping assembly comprises a hook clamp structure and a press pin structure, wherein the hook clamp structure has a first position and a second position; the press pin structure is arranged on one side of the hook clamp structure; when the hook clamp structure is located at the first position, at least part of the press pin structure can press against the hook clamp structure; and when the hook clamp structure is located at the second position, the press pin structure can be separated from the hook clamp structure. The solder-ribbon-gripping assembly provided in the present disclosure improves the reliability of solder ribbon gripping and reduces the risk of the solder ribbon falling off.

Description

Solder strip grabbing assembly, solder strip carrying device and solder strip carrying method

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411008281.5, filed on July 25, 2024, entitled “Solder strip carrying device and solder strip carrying method”, and Chinese Patent Application No. 202421781546.0, filed on July 25, 2024, entitled “Solder strip grabbing assembly and solder strip carrying device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of battery production equipment, and more particularly, to a solder strip grabbing assembly, a solder strip carrying device and a solder strip carrying method. BACKGROUND

[0003] In a conventional Back Contac (BC) cell module string welding process, the solder strip is usually placed on the cell sheet by a vacuum suction device that is attached to the solder strip, carried to above the cell sheet, and then the solder strip is placed on the cell sheet after the vacuum is broken. In this way, when the solder strip is carried in large quantities, vacuum leakage is likely to occur, causing the solder strip to fall off. SUMMARY

[0004] An object of the present disclosure is to provide a new technical solution for a solder strip grabbing assembly, a solder strip carrying device and a solder strip carrying method.

[0005] According to a first aspect of the present disclosure, a solder strip grabbing assembly is provided, comprising:

[0006] a hooking and clamping structure, the hooking and clamping structure having a first position and a second position;

[0007] a pressing needle structure, the pressing needle structure being arranged on one side of the hooking and clamping structure;

[0008] when the hooking and clamping structure is located at the first position, at least a portion of the pressing needle structure is capable of being pressed against the hooking and clamping structure;

[0009] when the hooking and clamping structure is located at the second position, the pressing needle structure is capable of being separated from the hooking and clamping structure.

[0010] Optionally, the solder strip grabbing assembly further comprises a guide structure, the guide structure being provided with a limiting slot, and when the hooking and clamping structure is located at the first position, the solder strip held by the hooking and clamping structure is capable of being located in the limiting slot.

[0011] Optionally, the pressure needle structure includes a pressure plate, a spring, and a connector, wherein the pressure plate is connected to the connector via the spring, so that at least a portion of the pressure plate can press against the hook clamp structure.

[0012] Optionally, the pressure needle structure further includes an air tube connector, the pressure plate is provided with an adsorption hole, the air tube connector communicates with the adsorption hole, and can be connected to a pneumatic source.

[0013] Optionally, the adsorption pores are configured as waist-shaped pores.

[0014] Optionally, the hook and clamp structure has a support portion, the upper surface of which is higher than the lower surface of the pressure plate, so that when the hook and clamp structure is in the first position, at least a portion of the lower surface of the pressure plate can press against the upper surface of the support portion.

[0015] Optionally, the welding strip gripping assembly further includes a first driving member, and the hook clamp structure further has a connecting portion;

[0016] The supporting part is connected to the first driving member through the connecting part, and the first driving member is used to position the hook and clamp structure at the first position or the second position.

[0017] According to a second aspect of this disclosure, a welding strip handling device is provided, including a welding strip gripping mechanism. The welding strip gripping mechanism includes a plurality of welding strip gripping components as described in the first aspect and a mounting structure. The plurality of welding strip gripping components are arranged in rows and / or columns on the mounting structure, such that each hook clamp structure can have a first position and a second position relative to the mounting structure.

[0018] Optionally, it also includes an auxiliary mechanism that, when a welding strip is pressed between the pressure needle structure and the hook clamp structure, can press against the welding strip, and the pressing force is greater than or equal to the pressing force of the pressure needle structure on the welding strip.

[0019] Optionally, the welding strip handling device further includes a mounting plate, and two welding strip gripping mechanisms are provided, which are respectively fixed at both ends of the first surface of the mounting plate, and the auxiliary mechanism is fixed between the two welding strip gripping mechanisms.

[0020] Optionally, the auxiliary mechanism has the same structure as the pressure needle structure, and the number of pressure needle structures it includes is the same as the number of hook and clamp structures included in the welding strip gripping mechanism.

[0021] Optionally, the welding strip handling device further includes a lifting mechanism, which is mounted on the mounting plate and can at least drive the auxiliary mechanism to rise or fall.

[0022] According to a third aspect of this disclosure, a method for handling solder ribbon is provided, which is applied to the solder ribbon gripping assembly described in the first aspect; or to the solder ribbon handling device described in the second aspect.

[0023] The hook clamp structure has a supporting part, the pressure needle structure has a pressure plate, and the welding strip handling method includes:

[0024] Position each hook and clamp structure in the second position, with the upper surface of each support portion lower than the bottom surface of the welding strip, and the lower surface of each pressure plate higher than the upper surface of the support portion.

[0025] Move each hook and clamp structure to the first position, and simultaneously raise it to the position where the upper surface of each support part contacts the lower surface of the welding strip, and press the lower surface of each pressure plate against the upper surface of the welding strip to complete the welding strip gripping.

[0026] The hook and clamp structure is lowered until the upper surface of each support part is separated from the lower surface of the welding strip. At the same time, the hook and clamp structure is moved to the second position, so that each pressure plate presses the welding strip onto the battery cell, thus completing the placement of the welding strip.

[0027] One technical advantage of this disclosure is that, by setting up a hook clamp structure and a pressure needle structure, when the hook clamp structure is in the first position, the pressure needle structure can press against the hook clamp structure, so that the welding strip can be pressed between the hook clamp structure and the pressure needle structure to achieve the gripping of the welding strip. When the hook clamp is in the second position, the hook clamp structure separates from the pressure needle structure, so that the welding strip can be detached from the welding strip gripping component and placed.

[0028] After the welding strip is gripped, during the transportation process, one welding surface of the welding strip is pressed onto the pressure needle structure, and the other welding surface is supported on the hook clamp structure, which improves the reliability of welding strip gripping and reduces the risk of welding strip falling.

[0029] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0031] Figure 1 is one of the schematic diagrams of a welding strip handling device provided in this disclosure.

[0032] Figure 2 is a magnified view of part A in Figure 1.

[0033] Figure 3 is a side view of Figure 1.

[0034] Figure 4 is one of the schematic diagrams of a welding strip gripping mechanism provided in this disclosure.

[0035] Figure 5 is a side view of Figure 4.

[0036] Figure 6 is a BB cross-sectional view of Figure 5.

[0037] Figure 7 is a second schematic diagram of a welding strip gripping mechanism provided in this disclosure.

[0038] Figure 8 is a structural schematic diagram of a pressure plate provided in this disclosure.

[0039] Figure 9 is the front view of Figure 8.

[0040] Figure 10 is a CC sectional view of Figure 9.

[0041] Figure 11 illustrates one of the actions of a welding strip gripping mechanism in this disclosure gripping welding strip on a welding strip slitting mechanism (the hook structure is located in the second position).

[0042] Figure 12 is a partial schematic diagram of point M in Figure 11.

[0043] Figure 13 shows the second action of a welding strip gripping mechanism gripping welding strip on a welding strip slitting mechanism (the hook structure is located in the second position).

[0044] Figure 14 is a magnified view of point N in Figure 13.

[0045] Figure 15 is a schematic diagram of the action of a welding strip gripping mechanism provided in this disclosure during the transportation process after gripping the welding strip.

[0046] Figure 16 is a magnified view of point P in Figure 15.

[0047] Figure 17 is a schematic diagram of a welding strip gripping mechanism provided in this disclosure placing welding strips on a battery.

[0048] Figure 18 is a magnified view of part Q in Figure 17.

[0049] Figure 19 is a second schematic diagram of a welding strip handling device provided in this disclosure.

[0050] Figure 20 is the front view of Figure 19.

[0051] Figure 21 is a bottom view of Figure 20.

[0052] Figure 22 is an assembly diagram of a welding strip gripping mechanism and an auxiliary mechanism provided in this disclosure.

[0053] Figure 23 is one of the schematic diagrams of an auxiliary mechanism provided in this disclosure.

[0054] Figure 24 is a second schematic diagram of an auxiliary mechanism provided in this disclosure.

[0055] Figure 25 is a magnified view of part D in Figure 24.

[0056] Figure 26 is a schematic diagram of a lifting mechanism provided in this disclosure.

[0057] Explanation of reference numerals in the attached drawings: 100, welding strip gripping mechanism; 10, hook and clamp structure; 101, support part; 102, connecting part; 20, pressure needle structure; 201, suction hole; 202, pressure plate; 203, spring; 204, connecting piece; 205, retaining ring; 30, guide structure; 301, limiting groove; 40, air pipe connector; 50, first driving component; 200, mounting plate; 300, auxiliary mechanism; 400, lifting mechanism; 401, connecting plate; 402, slot; 403, second driving component; 500, welding strip; 600, welding strip slitting mechanism; 700, battery cell. Detailed Implementation

[0058] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0059] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0060] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0061] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0062] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0063] As shown in Figures 1 to 18, according to a first aspect of this disclosure, a welding strip gripping assembly is provided, including a hook clamp structure 10 having a first position and a second position; and a pressure needle structure 20 disposed on one side of the hook clamp structure 10; when the hook clamp structure 10 is located at the first position, at least a portion of the pressure needle structure 20 can press against the hook clamp structure 10; and when the hook clamp structure 10 is located at the second position, the pressure needle structure 20 can be separated from the hook clamp structure 10.

[0064] Specifically, the ribbon gripping assembly provided in this application is used to grip the ribbon 500 from the ribbon slitting mechanism 600 or other ribbon 500 carrying device and transport it to the cell 700 for the BC cell module string welding process.

[0065] In practical applications, the hook-clamp structure 10 has a first position and a second position to facilitate the support, handling, and placement of the welding strip 500. Specifically, when the hook-clamp structure 10 is in the first position, the welding strip 500 can be supported on the hook-clamp structure 10. When the hook-clamp structure 10 is in the first position, at least a portion of the pressure needle structure 20 can press against the hook-clamp structure 10, allowing the pressure needle structure 20 and the hook-clamp structure 10 to press the welding strip 500 tightly between their contact surfaces, thus achieving the gripping and handling of the welding strip 500.

[0066] In the above process, one surface of the welding strip 500 rests on the hook-clamp structure 10, while the other surface is pressed against the hook-clamp structure 20. This ensures that the welding strip 500 is securely held between the hook-clamp structure 10 and the pressure needle structure 20, preventing the risk of the welding strip 500 falling during handling and improving the reliability of the handling process. The clamping of both surfaces of the welding strip 500 also avoids the damage to the welding strip 500 caused by conventional techniques that typically use claws to hold the two sides of the welding strip 500, thus improving the safety of gripping and handling the welding strip 500.

[0067] Furthermore, after the solder ribbon 500 is transported to a designated position, such as onto the battery cell 700, the hook clamp structure 10 can move to a second position, allowing the pressure pin structure 20 to separate from the hook clamp structure 10. Thus, with the solder ribbon 500 held between the two structures, the separation between the hook clamp structure 10 and the pressure pin structure 20 allows the solder ribbon 500 to be placed onto the battery cell 700, completing the entire process of gripping, transporting, and placing the solder ribbon 500.

[0068] In the above embodiments, the hook clamp structure 10 is located at the first position and the second position. The hook clamp structure 10 can be in a closed state and an open state, so that it can adjust the distance relationship with the pressure needle structure 20. The specific form can be designed according to actual needs. The position movement of the hook clamp structure 10 can be achieved by driving components such as motors and cylinders. This application does not limit this.

[0069] Optionally, as shown in FIG2, the welding strip gripping assembly further includes a guide structure 30, on which a limiting groove 301 is provided, so that when the hook clamp structure 10 is located at the first position, the welding strip 500 supported by it can be located within the limiting groove 301.

[0070] Specifically, in practical applications, the welding strip 500 is a long strip structure. The guide structure 30 is designed so that when the welding strip 500 is located between the hook clamp structure 10 and the pressure needle structure 20, the welding strip 500 can be located in the limiting groove 301 of the guide structure 30. This ensures that during the gripping and handling process, the part of the welding strip 500 that is not pressed between the hook clamp structure 10 and the pressure needle structure 20 can be restricted in the limiting groove 301, preventing it from swaying left and right. This ensures that the welding strip 500 will not fall or change position during handling, thus ensuring the yield and utilization rate of subsequent welded products. See Figures 11 to 18.

[0071] Optionally, as shown in Figures 2 and 6, the pressure needle structure 20 includes a pressure plate 202, a spring 203, and a connector 204. The pressure plate 202 is connected to the connector 204 via the spring 203, so that at least a portion of the pressure plate 202 can press against the hook clamp structure 10.

[0072] Specifically, in this embodiment, the pressure plate 202 of the pressure needle structure 20 is connected to the connector 204 via a spring 203. The spring 203 can be provided with a preload, so that when the hook clamp structure 10 is in the first position, the pressure plate 202 can press against the hook clamp structure 10 under the action of the spring 203 to achieve the purpose of pressing the welding strip 500. Wherein, at least a portion of the pressure plate 202 presses against the hook clamp structure 10, meaning that the size of the pressure plate 202 and the contact size of the hook clamp structure 10 can be designed according to actual needs. The contact surface between the two is based on pressing the welding strip 500, and it is not necessary to limit the contact surfaces to be the same.

[0073] In practical applications, the pressure plate 202 can be designed as a connecting rod and a cylindrical pressure head located at one end of the connecting rod. The spring 203 is sleeved on the connecting rod, and the pressure head is assembled on the connector 204 through the other end of the connecting rod. The spring 203 is given a certain preload so that the pressure head can press against the hook clamp structure 10 to achieve the pressing of the welding strip 500.

[0074] Optionally, as shown in Figures 7 to 10, the pressure needle structure 20 further includes an air tube connector 40. The pressure plate 202 is provided with an adsorption hole 201. The air tube connector 40 communicates with the adsorption hole 201 and can be connected to a pneumatic source.

[0075] Specifically, in this embodiment, by providing an adsorption hole 201 in the pressure plate 202, in practical applications, after the air jack is connected to an external pneumatic source, the pressure plate 202 can achieve an adsorption effect. This allows the pressure plate 202 to adsorb the welding strip 500 through the adsorption hole 201 during the handling of the welding strip 500, further improving the gripping force of the pressure needle structure 20 and the hook clamp structure 10 on the welding strip 500, improving the safety and reliability of the welding strip 500 during handling, and preventing it from falling off.

[0076] In the above embodiment, the pressure plate 202 includes a pressure head and a connecting rod connected to the pressure head. A retaining ring 205 and an air pipe connector 40 are provided at the other end of the connecting rod to achieve a movable connection between the pressure plate 202 and the connecting member 204, as well as a pneumatic connection with the air pipe structure. In practical applications, the adsorption function of the pressure plate 202 can be activated during handling or placement of the welding strip 500 to improve the gripping force on the welding strip 500. Specifically, activating the adsorption function when placing the welding strip 500 ensures that the position of the welding strip 500 remains unchanged after the hook clamp structure 10 moves to the second position and separates from the pressure needle structure 20, thus improving the accuracy of the welding strip 500 placement.

[0077] Optionally, the adsorption pore 201 is configured as a waist-shaped pore.

[0078] Specifically, in practical applications, the welding strip 500 is usually a long strip structure. The adsorption hole 201 is set as a waist-shaped hole, and when adsorbing the welding strip 500, the length direction of the waist-shaped hole is aligned with the length direction of the welding strip 500 to increase the adsorption area of ​​the adsorption hole 201 for the welding strip 500, thereby improving the adsorption force of the pressure plate 202 for the welding strip 500.

[0079] Optionally, as shown in FIG2, the hook clamp structure 10 has a support portion 101, the upper surface of the support portion 101 being higher than the lower surface of the pressure plate 202, such that when the hook clamp structure 10 is located in the first position, at least a portion of the lower surface of the pressure plate 202 can press against the upper surface of the support portion 101.

[0080] Specifically, in this embodiment, the support portion 101 of the hook clamp structure 10 contacts the pressure needle structure 20 to press the welding strip 500. The support portion 101 can be configured as a planar structure that matches the shape of the welding strip 500, and its size can be appropriately larger than the size of the welding strip 500, so that the welding strip 500 can be completely supported on the support portion 101, thereby improving the reliability of the support of the welding strip 500 and also providing a certain degree of protection for the welding strip 500 during transportation.

[0081] In practical applications, when the welding strip gripping assembly is not gripping the welding strip 500, the upper surface of the support portion 101 is higher than the pressure plate 202. This allows the hook clamp structure 10 to press the welding strip 500 firmly when the lower surface of the pressure plate 202 presses against the upper surface of the support portion 101 during the process of gripping or transporting the welding strip 500, thereby increasing the clamping force on the welding strip 500. Refer to Figures 11 to 18.

[0082] Optionally, as shown in Figures 3, 19 and 20, the welding strip gripping assembly further includes a first driving member 50, and the hook clamp structure 10 further has a connecting portion 102; the supporting portion 101 is connected to the first driving member 50 through the connecting portion 102, and the first driving member 50 is used to position the hook clamp structure 10 at the first position or the second position.

[0083] Specifically, in this embodiment, the supporting part 101 is connected to the first driving member 50 via the connecting part 102, so that the hook clamp structure 10 can be located at a first position or a second position, thereby adjusting the position or state of the hook clamp structure 10. The first driving member 50 can drive the hook clamp structure 10 to move closer to or further away from the pressure needle structure 20 in the horizontal or vertical direction, so that the pressure needle structure 20 presses against the supporting part 101 or separates from the supporting part 101.

[0084] In practical applications, the pressure needle structure 20 can be adjusted in position to achieve pressure or separation from the hook clamp structure 10. The first driving component 50 can be a cylinder, electric cylinder, or motor.

[0085] According to a second aspect of this disclosure, as shown in Figures 4 to 7, a welding strip handling device is provided, including a welding strip gripping mechanism 100. The welding strip gripping mechanism 100 includes a plurality of welding strip gripping components as described in the first aspect and an mounting structure. The plurality of welding strip gripping components are arranged in rows and / or columns on the mounting structure, such that each hook clamping structure 10 can have a first position and a second position relative to the mounting structure.

[0086] Specifically, the ribbon gripping mechanism 100 provided in this application is assembled from the ribbon gripping components provided in the first aspect. Because it reliably grips the ribbon 500 and accurately positions the ribbon 500, it improves the working efficiency of the ribbon gripping mechanism 100 and the yield rate of the final produced battery modules. In practical applications, multiple sets of hook structures 10 and multiple pressure pin structures 20 are matched and configured to simultaneously grip multiple ribbons 500 using multiple ribbon gripping components, thereby improving production efficiency; or multiple ribbon gripping components can simultaneously grip the same ribbon 500 to further improve the reliability of ribbon 500 handling. The specific design is tailored to actual needs.

[0087] In one embodiment, multiple sets of welding strip gripping components are matched and arranged on the mounting structure, and the multiple sets of welding strip gripping components are arranged in rows and / or columns on the mounting structure, and the hook clamp structure 10 has a first position and a second position relative to the mounting structure, so as to realize the abutting contact or separation between each hook clamp structure 10 and the pressure needle structure 20.

[0088] In the above embodiments, the grouped welding strip gripping components can improve the gripping efficiency and gripping reliability of the welding strip 500. The mounting structure can be a plate-like structure, a strip-like structure, or a structure similar to a mounting beam that integrates multiple hook clamp structures 10 and multiple pressure pin structures 20 together, and then matches them together on the same mounting plate 200 to adapt to different production needs.

[0089] In practical applications, the specific form of the ribbon gripping mechanism 100 can be designed according to actual needs. As shown in Figures 4 and 5, it is assembled from 12 sets of ribbon gripping components, which can grip 12 ribbons 500 sequentially, forming a small ribbon gripping mechanism 100. Further, referring to Figures 11 to 18, four sets of structures assembled from the above 12 sets of ribbon gripping components are assembled together on a mounting structure to form a larger ribbon gripping mechanism 100 that can clamp and grip the 12 ribbons 500 at four different positions. If it is necessary to grip more ribbons 500 at once, this can be achieved by increasing the number of ribbon gripping components or increasing the number of small ribbon gripping mechanisms 100.

[0090] The following uses the welding strip gripping mechanism 100 shown in Figures 11 to 18 as an example to illustrate the action relationship between each hook structure 10 and the corresponding pressure needle structure 20 during the process of gripping, transporting and placing the welding strip 500:

[0091] Figures 11 and 12 illustrate the action of the welding strip 500 after it has been cut in the welding strip slitting mechanism 600, and the welding strip gripping mechanism 100 preparing to grip it. The welding strip 500 is located in the guide groove of the welding strip slitting mechanism 600. The welding strip gripping mechanism 100 descends to the gripping position. At this time, the hook clamp structure 10 is in the second position, and the upper surface of the support portion 101 of the hook clamp structure 10 is 1-2 mm lower than the back surface of the welding strip 500. The pressure plate 202 of the pressure needle structure 20 contacts the upper surface of the guide groove of the welding strip slitting mechanism 600, making the lower surface of the pressure plate 202 higher than the upper surface of the support portion 101. During this process, the pressure needle structure 20 does not contact the welding strip 500.

[0092] Figures 13 and 14 show one of the schematic diagrams of the action of the welding strip gripping mechanism 100 gripping and transporting the welding strip 500. In this diagram, the welding strip gripping mechanism 100 rises until the upper surface of the support portion 101 of the hook clamp structure 10 contacts the lower surface of the welding strip 500. At the same time, the hook clamp structure 10 is driven to move to a first position by the first driving member 50, so that the lower surface of the welding strip 500 is completely supported on the support portion 101.

[0093] Figures 15 and 16 show the second schematic diagram of the action of the welding strip gripping mechanism 100 in gripping and transporting the welding strip 500. In this diagram, the welding strip gripping mechanism 100 continues to rise until the welding strip 500 disengages from the welding strip cutting mechanism 600. During this process, due to the action of the spring 203, the lower surface of the pressure plate 202 contacts the upper surface of the welding strip 500, pressing the welding strip 500 firmly onto the support portion 101 of the hook clamp structure 10. Subsequently, the welding strip gripping mechanism 100 moves to the position where the welding strip 500 needs to be placed.

[0094] Figures 17 and 18 illustrate the operation of the ribbon gripping mechanism 100 placing the ribbon 500 onto the battery cell 700. When the ribbon gripping mechanism 100 moves above the battery cell 700, the hook clamp structure 10 opens, moving to the second position where the upper surface of its support portion 101 disengages from the lower surface of the ribbon 500. Simultaneously, without the constraint of the hook clamp structure 10, the pressure pin structure 20, under the action of the spring 203, presses the ribbon 500 onto the battery cell 700 using the pressure plate 202, thus placing the ribbon 500. Subsequently, the ribbon gripping mechanism 100 disengages from the battery cell 700 to begin the next cycle of gripping, transporting, and placing. At this point, the hook clamp is in the second position, the lower surface of the pressure plate 202 is lower than the upper surface of the support portion 101, and there is no contact between them.

[0095] In the above process, the welding strip gripping device formed by multiple welding strip gripping components can grip multiple welding strips 500 at once, and has multiple gripping positions for each welding strip 500, which improves gripping efficiency and ensures the reliability of gripping the welding strips 500. In particular, since the welding strips 500 are pressed by the pressure plate 202 and the support part 101 during the transportation process, the reliability of gripping and transportation is further improved. During the placement process, since the pressure plate 202 has a pressing effect on the welding strips 500, it can prevent their position from shifting, thus improving the reliability of the placement of the welding strips 500.

[0096] According to a third aspect of this disclosure, as shown in Figures 19 to 26, a welding strip handling device is provided, including an auxiliary mechanism 300 and a welding strip gripping mechanism 100 as described in the second aspect; when a welding strip 500 is pressed between the pressure needle structure 20 and the hook clamp structure 10, the auxiliary mechanism 300 can press against the welding strip 500, and the pressing force is greater than or equal to the pressing force of the pressure needle structure 20 on the welding strip 500.

[0097] Specifically, in this embodiment, the welding ribbon handling device is assembled by one or more welding ribbon gripping mechanisms 100. When the welding ribbon 500 is pressed between the pressure needle structure 20 and the hook clamp structure 10, the pressure of the auxiliary mechanism 300 against the welding ribbon 500 is greater than or equal to the pressure of the pressure needle structure 20 against the welding ribbon 500. This ensures that during the placement of the welding ribbon 500, when the hook clamp structure 10 separates from the pressure needle structure 20, at least the auxiliary mechanism 300 can press against the welding ribbon 500, thereby fixing the position of the welding ribbon 500. This facilitates subsequent processes such as pressing and bonding the welding ribbon 500 with the battery cell 700, and improves the position control of the welding ribbon 500 during placement.

[0098] The auxiliary mechanism 300 may be formed by multiple pressure needle structures 20 or by other similar mechanisms, and this disclosure does not limit it.

[0099] Optionally, as shown in Figures 19 to 22, the welding strip handling device further includes a mounting plate 200, and two welding strip gripping mechanisms 100 are provided and respectively fixed at both ends of the first surface of the mounting plate 200. The auxiliary mechanism 300 is fixed between the two welding strip gripping mechanisms 100.

[0100] Specifically, in this embodiment, two welding strip gripping mechanisms 100 are positioned at both ends of the welding strip 500 to grip it. An auxiliary mechanism 300 is provided in the middle to fix the position of the welding strip 500 during placement, preventing it from shifting. This structural design ensures the reliability of the welding strip 500 during gripping, avoiding the risk of falling, and also guarantees the accuracy of its placement, thus improving the welding quality of subsequent products.

[0101] In the above embodiments, each welding strip gripping mechanism 100 is assembled from multiple pressure needle mechanisms and a matching number of hook clamp structures 10. Each auxiliary mechanism 300 can be implemented using the same number of pressure needle structures 20, improving the integration of the equipment and the convenience of unified control. They are all assembled on the mounting plate 200 to facilitate the movement of the entire device.

[0102] Optionally, as shown in Figures 23 to 25, the auxiliary mechanism 300 has the same structure as the pressure needle structure 20, and the number of pressure needle structures 20 included therein is the same as the number of hook and clamp structures 10 included in the welding strip gripping mechanism 100.

[0103] Specifically, the auxiliary mechanism 300 adopts the same design as the pressure needle structure 20 to improve the unified control of the equipment. As shown in Figures 23 to 25, in one embodiment, the auxiliary mechanism 300 includes a plurality of components arranged in a row similar to the pressure needle structure 20. Each component includes a connecting rod, a pressure head disposed at one end of the connecting rod and a retaining ring 205 disposed at the other end, and a spring 203 sleeved on the connecting rod. The plurality of connecting rods pass through the connecting member 204 (a connecting beam) to form an integral structure. The retaining ring 205 and the pressure head are located on different sides of the connecting member 204.

[0104] In practical applications, the auxiliary mechanism 300 can also be equipped with a guide structure 30, as provided in the welding strip gripping assembly in the first aspect, to limit the left and right swaying of the welding strip 500 and improve the positional accuracy of the welding strip 500. The structural design of the auxiliary mechanism 300 reduces the number of parts in the entire welding strip handling device while enabling more functions, simplifying the device's structure and improving its working efficiency.

[0105] Optionally, as shown in Figures 19 to 21 and Figure 26, the welding strip handling device further includes a lifting mechanism 400, which is disposed on the mounting plate 200 and can at least drive the auxiliary mechanism 300 to rise or fall.

[0106] Specifically, in this embodiment, the lifting mechanism 400 can at least drive the auxiliary mechanism 300 to rise or fall, so as to press and position the welding strip 500 or press and bond it to the battery cell 700 during the process of the welding strip gripping mechanism 100 placing the welding strip 500.

[0107] In one embodiment, as shown in Figures 24 to 26, the lifting mechanism 400 includes two second driving members 403 and a connecting plate 401 disposed between the two driving members. The connecting plate 401 is provided with a plurality of slots 402. The pressure needle mechanism in the auxiliary mechanism 300 is engaged in the slots 402 by a retaining ring 205 on the connecting rod, so that in practical applications, the second driving members 403 can drive the connecting plate 401 to rise or fall, thereby realizing the rise or fall of the auxiliary mechanism 300.

[0108] In addition, in the above embodiments, multiple lifting mechanisms 400 are provided, and multiple pressure needle structures 20 in the welding strip gripping mechanism 100 can also be mounted on one lifting mechanism 400, so that the pressure needle structure 20 in the welding strip gripping mechanism 100 and the pressure needle structure 20 in the auxiliary mechanism 300 can rise or fall simultaneously, thereby improving the integration of the device.

[0109] The following uses the welding strip handling device shown in Figures 19 to 21 as an example to illustrate the action relationship between the various mechanisms during the process of gripping, handling, and placing the welding strip 500:

[0110] Referring to Figures 11 and 12, the diagram illustrates the action of the welding strip 500 after it has been cut in the welding strip slitting mechanism 600, and the welding strip gripping mechanism 100 preparing to grip it. The welding strip 500 is located in the guide groove of the welding strip slitting mechanism 600. The welding strip gripping mechanism 100 descends to the gripping position. At this time, the hook clamp structure 10 is in the second position, and the upper surface of the support portion 101 of the hook clamp structure 10 is 1-2 mm lower than the back surface of the welding strip 500. The pressure plate 202 of the pressure needle structure 20 contacts the upper surface of the guide groove of the welding strip slitting mechanism 600, making the lower surface of the pressure plate 202 higher than the upper surface of the support portion 101. During this process, the pressure needle structures 20 of the welding strip gripping mechanism 100 and the auxiliary mechanism 300 do not contact the welding strip 500, and the lifting mechanism 400 is in a low position and does not contact the retaining ring 205.

[0111] Referring to Figures 13 and 14, one of the schematic diagrams illustrates the operation of the welding strip gripping mechanism 100 in gripping and transporting the welding strip 500. In this diagram, the welding strip gripping mechanism 100 rises until the upper surface of the support portion 101 of the hook clamp structure 10 contacts the lower surface of the welding strip 500. Simultaneously, the hook clamp structure 10 is driven by the first driving member 50 to move to a first position, so that the lower surface of the welding strip 500 is completely supported on the support portion 101. At this time, the position of the lifting mechanism 400 remains unchanged.

[0112] Referring to Figures 15 and 16, this is the second schematic diagram of the action of the welding strip gripping mechanism 100 gripping and transporting the welding strip 500. In this diagram, the welding strip gripping mechanism 100 continues to rise until the welding strip 500 disengages from the welding strip slitting mechanism 600. During this process, due to the action of the spring 203, the lower surface of the pressure plate 202 contacts the upper surface of the welding strip 500, pressing the welding strip 500 firmly onto the support portion 101 of the hook clamp structure 10. Subsequently, the entire welding strip transport device moves above the battery cell 700.

[0113] Referring to Figures 17 and 18, the diagram illustrates the action of the ribbon gripping mechanism 100 placing the ribbon 500 onto the battery cell 700. When the ribbon gripping mechanism 100 descends to a certain height, since the pressure pin structure 20 in the auxiliary mechanism 300 is not restricted by the hook clamp structure 10, its pressure plate 202 is lower than the pressure plate 202 inside the ribbon gripping mechanism 100. This allows the ribbon 500 to be partially pressed onto the battery cell 700, thus ensuring the ribbon 500 is fixed in position. At this time, the hook clamp structure 10 of the ribbon gripping device does not need to move to the second position and remains a certain distance (2-3 mm) from the battery cell 700.

[0114] Furthermore, the lifting mechanism 400 drives each pressure pin structure 20 to rise, causing it to disengage from the welding strip 500. At the same time, the hook clamp structure 10 moves to the second position, causing the welding strip 500 to fall onto the surface of the battery cell 700. Then, the lifting mechanism 400 drives each pressure pin structure 20 to descend, until the pressure plate 202 of the pressure pin mechanism presses the welding strip 500 onto the battery cell 700. The entire welding strip conveying device is then lowered a certain distance (e.g., 1-2 mm) to ensure that the welding strip 500 is pressed firmly onto the surface of the battery cell 700 (the portion of the surface of the battery cell 700 corresponding to the welding strip 500 is coated with adhesive).

[0115] Subsequently, the welding strip transport device rises as a whole, detaches from the battery cell 700, and begins the next cycle. At this time, each hook and clamp structure 10 of the welding strip gripping mechanism 100 is in the second position. The bottom of the pressure needle structure 20 in the welding strip gripping mechanism 100 and the pressure needle structure 20 in the auxiliary mechanism 300 are both lower than the upper surface (supporting surface) of the support portion 101 of the hook and clamp structure 10, and there is no contact between the pressure needle structure 20 and the hook and clamp structure 10.

[0116] In the above process, the welding strip gripping device formed by multiple welding strip gripping components can grip multiple welding strips 500 at once, and has multiple gripping positions for each welding strip 500, which improves gripping efficiency and ensures the reliability of gripping the welding strips 500. In particular, since the welding strips 500 are pressed by the pressure plate 202 and the support part 101 during the transportation process, the reliability of gripping and transportation is further improved. During the placement process, since the pressure plate 202 has a pressing effect on the welding strips 500, it can prevent their position from shifting, thus improving the reliability of the placement of the welding strips 500.

[0117] According to a third aspect of this disclosure, a method for handling welding strip is provided, applied to the welding strip gripping assembly of the first aspect, or applied to the handling device of the second aspect, wherein the hook clamp structure 10 has a supporting portion 101, and the pressure pin structure 20 has a pressure plate 202. Referring to Figures 11 to 18, the welding strip handling method includes:

[0118] First, position each hook and clamp structure 10 in the second position, with the upper surface of each support portion 101 lower than the bottom surface of the welding strip 500, and the lower surface of each pressure plate 202 higher than the upper surface of the support portion 101, as shown in Figures 11 to 12.

[0119] Next, each hook clamp structure 10 is moved to the first position and simultaneously raised to the position where the upper surface of each support part 101 contacts the lower surface of the welding strip 500, and the lower surface of each pressure plate 202 is pressed against the upper surface of the welding strip 500 to complete the welding strip gripping, as shown in Figures 13 to 16.

[0120] Finally, after moving the welding strip transport device above the welding strip 500 placement position, the hook clamp structure 10 is lowered until the upper surface of each support part 101 is separated from the lower surface of the welding strip 500. At the same time, the hook clamp structure 10 is moved to the second position, so that each pressure plate 202 presses the welding strip 500 against the battery cell 700, thus completing the placement of the welding strip 500, as shown in Figures 17 and 18.

[0121] By using the above-mentioned welding strip handling method, the welding strip 500 is pressed by the pressure plate 202 and the support part 101 during the handling process, which improves the reliability of gripping and handling. During the placement process, the pressure plate 202 has a pressing effect on the welding strip 500, which can prevent its position from shifting, thus improving the reliability of the placement of the welding strip 500.

[0122] In addition, during the above process, one surface of the welding strip 500 is supported on the hook clamp structure 10, and the other surface is pressed against the hook clamp structure 10 by the pressure needle structure 20, so that the welding strip 500 can be firmly pressed between the hook clamp structure 10 and the pressure needle structure 20. During the handling process, the risk of the welding strip 500 falling off can be avoided, and the reliability of handling can be improved.

[0123] The fact that the two surfaces of the welding strip 500 are clamped avoids the damage to the welding strip 500 caused by the conventional technique of using claws to hold the two sides of the welding strip 500, thus improving the safety of gripping and handling the welding strip 500.

[0124] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0125] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A solder strip grabbing assembly, characterized in that, The hooking structure has a first position and a second position. The pressing needle structure is arranged on one side of the hooking structure. When the hooking structure is in the first position, at least a part of the pressing needle structure can be pressed on the hooking structure. When the hooking structure is in the second position, the pressing needle structure can be separated from the hooking structure. The guiding structure is provided with a limiting groove, and when the hooking structure is in the first position, the supported solder strip can be located in the limiting groove.

2. The solder strip grabbing assembly of claim 1, wherein, The pressing needle structure includes a pressing plate, a spring and a connecting piece, the pressing plate is connected to the connecting piece through the spring, and at least a part of the pressing plate can be pressed on the hooking structure.

3. The solder strip grabbing assembly according to claim 1 or 2, characterized in that, The pressing needle structure further includes an air pipe joint, the pressing plate is provided with a suction hole, the air pipe joint is in communication with the suction hole and can be connected with a pneumatic source.

4. The solder strip grabbing assembly of claim 3, wherein, The suction hole is a waist-shaped hole.

5. The solder strip grabbing assembly of claim 4, wherein, The hooking structure has a supporting part, the upper surface of the supporting part is higher than the lower surface of the pressing plate, and when the hooking structure is in the first position, at least a part of the lower surface of the pressing plate can be pressed on the upper surface of the supporting part.

6. The solder strip grabbing assembly according to any one of claims 3 to 5, characterized in that The hooking structure further has a connecting part.

7. The solder strip grabbing assembly of claim 6, wherein, The supporting part is connected with the first driving member through the connecting part, and the first driving member is used for making the hooking structure be in the first position or the second position. The solder strip grabbing mechanism includes a mounting structure and a plurality of solder strip grabbing assemblies according to any one of claims 1-7.

8. A solder strip handling device characterized by The plurality of solder strip grabbing assemblies are arranged in rows and / or columns on the mounting structure, so that each hooking structure can have the first position and the second position relative to the mounting structure. The auxiliary mechanism can be pressed on the solder strip when the pressing needle structure and the hooking structure are arranged with the solder strip therebetween, and the pressing force is greater than or equal to the pressing force of the pressing needle structure on the solder strip. The solder strip grabbing mechanism is provided with two and is fixed at both ends of the first surface of the mounting plate, and the auxiliary mechanism is fixed between the two solder strip grabbing mechanisms.

9. The solder strip handling device of claim 8, wherein, The auxiliary mechanism has the same structure as the pressing needle structure, and the number of the pressing needle structures included in the auxiliary mechanism is the same as the number of the hooking structures included in the solder strip grabbing mechanism.

10. The solder strip handling device of claim 9, wherein, The solder strip carrying device further includes a lifting mechanism arranged on the mounting plate and capable of driving the auxiliary mechanism to at least rise or fall.

11. The solder strip handling device of claim 10, wherein, 13. A solder strip carrying method applied to the solder strip grabbing assembly according to any one of claims 1-7 or the solder strip carrying device according to any one of claims 8-12.

12. The solder strip handling device of claim 11, wherein, The solder strip carrying method includes: Each hooking structure is in the second position, and the upper surface of each supporting part is lower than the bottom surface of the solder strip, and the lower surface of each pressing plate is higher than the upper surface of the supporting part. The hooking structure has a supporting part, and the pressing needle structure has a pressing plate, characterized in that, ​ ​ The hooking structures are moved to the first position, and are lifted to the position where the upper surfaces of the supporting portions contact the lower surface of the solder strip, and the lower surfaces of the pressing plates press on the upper surface of the solder strip, to complete the solder strip grabbing; The hooking structures are lowered to separate the upper surfaces of the supporting portions from the lower surface of the solder strip, and are moved to the second position, so that the pressing plates press the solder strip on the battery piece, to complete the solder strip placing.

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