Battery electrode welding tool

Abstract

The utility model provides a battery electrode welding tool which comprises a strip-shaped conveying frame with an opening in the upper end, a bearing conveying belt is movably connected in the strip-shaped conveying frame, mounting frames are upwards arranged on the two sides of the strip-shaped conveying frame, extrusion pieces are movably arranged on the opposite sides of the two mounting frames, and the extrusion pieces are arranged on the strip-shaped conveying frame. Each installation frame is provided with a plurality of sliding connection holes facing the corresponding extrusion piece, each extrusion piece is connected with a plurality of connection sliding shafts which are in sliding connection with the corresponding sliding connection holes in a one-to-one correspondence mode, each connection sliding shaft is sleeved with a reset spring located between the corresponding extrusion piece and the corresponding installation frame, and each installation frame is provided with an electromagnet. A metal sheet is arranged on the side, facing the corresponding electromagnet, of each extrusion sheet, a strip-shaped pressing frame is arranged above the strip-shaped conveying frame, and the strip-shaped pressing frame is movably connected with an electrode pressing conveying belt. According to the utility model, the battery can be effectively fixed when the electrode of the battery is welded, and the welding precision and reliability of the electrode of the battery can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery processing technology and relates to a battery electrode welding fixture. Background Technology

[0002] In modern battery manufacturing processes, electrode welding is a critical step that directly affects the battery's internal connection performance and overall structural stability. With the rapid development of the new energy industry, the requirements for battery performance are increasing, particularly regarding energy density, cycle life, and safety. Therefore, quality control of electrode welding is of paramount importance.

[0003] Currently, ultrasonic friction welding technology is widely used in the field of battery electrode welding. This technology applies high-frequency mechanical vibration (usually above 20 kHz) between the metal materials to be welded, using frictional heat generated between the material contact surfaces to soften the metal, and achieving a solid-state connection under pressure. Due to its advantages such as no need to add solder, low welding temperature, high joint quality, and high efficiency, it has been widely used in the electrode welding process of various battery systems such as lithium-ion batteries and nickel-metal hydride batteries.

[0004] However, several problems have been exposed in practical applications. First, the high-frequency vibrations generated during ultrasonic welding not only act on the interface of the metals being welded but also are transmitted to the entire battery body, causing uncontrollable vibrations and displacements during the welding process. This vibration may cause welding position deviations, affecting the consistency and reliability of the weld points, and even causing defects such as incomplete welds or broken welds. Second, due to the lack of effective fixing devices or clamping mechanisms specifically for the battery body in existing equipment, it is difficult to stably position the battery during the welding process, especially when welding thin or flexible battery structures, where the risk of deformation is higher, further exacerbating the instability of welding quality. Utility Model Content

[0005] The purpose of this invention is to provide a battery electrode welding fixture that can effectively fix the battery during battery electrode welding, thereby improving the accuracy and reliability of battery electrode welding.

[0006] To solve the above-mentioned technical problems, this utility model provides a battery electrode welding fixture, including a strip-shaped conveyor frame with an open top. A carrying conveyor belt is movably connected inside the strip-shaped conveyor frame. A first drive motor for driving the carrying conveyor belt is installed outside the strip-shaped conveyor frame. Mounting frames are provided on both sides of the strip-shaped conveyor frame, and the two mounting frames are arranged opposite each other. An extrusion plate is movably arranged on one side of each mounting frame opposite to the extrusion plate. Each mounting frame has multiple sliding connection holes facing the corresponding extrusion plate. Each extrusion plate is connected to multiple connecting slide shafts that are slidably connected to the corresponding sliding connection holes. Each connecting slide shaft is fitted with a return spring located between the corresponding extrusion plate and the corresponding mounting frame. An electromagnet is installed on each mounting frame. A magnetically attracted metal sheet is provided on the side of each extrusion plate facing the corresponding electromagnet. A strip-shaped pressing frame is arranged above the strip-shaped conveyor frame along its length. An electrode pressing conveyor belt is movably connected to the strip-shaped pressing frame. A second drive motor for driving the electrode pressing conveyor belt is installed outside the strip-shaped conveyor frame.

[0007] By adopting the above technical solution, when welding battery electrodes, the battery is first placed on the carrier conveyor belt, and then the electrode sheet is placed in the corresponding position on the battery. After passing through the electrode pressing conveyor belt, the electrode pressing conveyor belt presses down on the part of the electrode sheet to prevent the electrode sheet from shifting. When the battery is transported by the carrier conveyor belt to the bottom of the welding structure, the electromagnet is de-energized and loses its attraction to the metal sheet, causing the two blocking strips to block the battery inward, and the carrier conveyor belt stops transporting. At the same time, the two pressing plates cooperate to clamp the battery under the action of the return spring. At this time, the motor welding structure can press down on the part of the electrode sheet that is exposed and perform ultrasonic friction welding on it. After the welding is completed, the electromagnet is energized to attract the metal sheet, causing the pressing plates to release the battery, and the welded battery can then be transported forward by the carrier conveyor belt.

[0008] The present invention is further configured such that each extrusion piece has a blocking strip vertically inwardly arranged on one side facing the tail end of the strip conveyor frame.

[0009] The present invention is further provided with a limit cap at the end of each connecting slide shaft away from the corresponding extrusion piece.

[0010] The present invention is further provided with a rubber gasket on the opposite side of each extrusion sheet.

[0011] The present invention is further configured such that a plurality of support rollers distributed along its length are rotatably connected inside the strip conveyor frame, and each support roller is in contact with the upper side of the carrying conveyor belt.

[0012] The present invention is further configured such that the electrode pressing conveyor belt is disposed on one side of the strip pressing frame, and the two ends of the strip pressing frame are rotatably connected to the electrode pressing conveyor belt, and the power output shaft of the second drive motor is connected to one end of one of the drive shafts.

[0013] The present invention is further configured such that each drive shaft is provided with a plurality of drive teeth, and the electrode pressing conveyor belt is a rack conveyor belt that meshes with the drive teeth.

[0014] Compared with the prior art, this utility model uses an electromagnet to drive two opposing pressing plates to clamp the battery, so that the battery will not be displaced due to vibration during ultrasonic friction welding. In addition, the electrode pressing conveyor belt is used to help press the electrode plates, so that the electrode plates will not be displaced before welding. This allows the battery and electrodes to be effectively fixed during welding, which helps to improve the accuracy and reliability of battery electrode welding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional view used to show the support rollers inside the strip conveyor frame;

[0017] Figure 3 Used to demonstrate the connection between the extruded sheet and the mounting bracket;

[0018] Figure 4 It is an exploded view used to show the connection between the extrusion sheet and the mounting bracket.

[0019] The components include: 1. Strip conveyor frame; 2. Carrying conveyor belt; 3. First drive motor; 4. Support roller; 5. Mounting frame; 6. Extrusion plate; 7. Blocking strip; 8. Rubber pad; 9. Sliding connection hole; 10. Connecting slide shaft; 11. Limit cap; 12. Return spring; 13. Electromagnet; 14. Metal sheet; 15. Strip pressing frame; 16. Electrode pressing conveyor belt; 17. Drive shaft; 18. Second drive motor. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the battery electrode welding fixture proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0021] Example, refer to Figure 1-4A battery electrode welding fixture includes a strip-shaped conveyor frame 1 with an open top. A carrier conveyor belt 2 is movably connected inside the strip-shaped conveyor frame 1. A first drive motor 3 for driving the carrier conveyor belt 2 is installed outside the strip-shaped conveyor frame 1. Multiple support rollers 4 distributed along the length of the strip-shaped conveyor frame 1 are rotatably connected inside the strip-shaped conveyor frame 1. Each support roller 4 contacts the upper side of the carrier conveyor belt 2 to improve the stability of the carrier conveyor belt 2 in transporting batteries. A mounting frame 5 is provided on both sides of the strip-shaped conveyor frame 1, facing each other. An extrusion plate 6 is movably mounted on one side of each of the two mounting frames 5 facing each other. A blocking strip 7 is vertically inwardly mounted on the side of each extrusion plate 6 facing the tail end of the strip-shaped conveyor frame 1. A rubber pad 8 is provided on the opposite side of each extrusion plate 6.

[0022] Each mounting bracket 5 has two sliding connection holes 9 facing the corresponding extrusion piece 6. Each extrusion piece 6 is connected to two connecting slide shafts 10 that are slidably connected to the corresponding sliding connection holes 9. Each connecting slide shaft 10 has a limit cap 11 at the end away from the corresponding extrusion piece 6. Each connecting slide shaft 10 is fitted with a return spring 12 located between the corresponding extrusion piece 6 and the corresponding mounting bracket 5. Each mounting bracket 5 is equipped with an electromagnet 13. Each extrusion piece 6 has a magnetically attracted metal sheet 14 on the side facing the corresponding electromagnet 13, so that when the electromagnet 13 is energized, it can attract the extrusion piece 6 to retract outward.

[0023] A strip-shaped pressing frame 15 is provided above the strip-shaped conveyor frame 1 along its length. An electrode pressing conveyor belt 16 is movably connected to one side of the strip-shaped pressing frame 15. The electrode pressing conveyor belt 16 is used to press the electrode plates on the battery to prevent the electrode plates from shifting. A drive shaft 17 is rotatably connected to both ends of the electrode pressing conveyor belt 16 on one side of the strip-shaped pressing frame 15. Several drive teeth are provided on the outside of each drive shaft 17. The electrode pressing conveyor belt 16 is a rack and pinion conveyor belt that meshes with the drive teeth. A second drive motor 18 is installed outside the strip-shaped conveyor frame 1 to drive the movement of the electrode pressing conveyor belt 16. The power output shaft of the second drive motor 18 is connected to one end of one of the drive shafts 17.

[0024] Working principle: When welding battery electrodes, the battery is first placed on the carrier conveyor belt 2, and then the electrode sheet is placed in the corresponding position on the battery. After passing through the electrode pressing conveyor belt 16, the electrode pressing conveyor belt 16 presses down on the part of the electrode sheet to prevent the electrode sheet from shifting. When the battery is transported by the carrier conveyor belt 2 to the bottom of the welding structure, the electromagnet 13 is de-energized and loses its attraction to the metal sheet 14, causing the two blocking bars 7 to block the battery inward, and the carrier conveyor belt 2 stops transporting. At the same time, the two pressing plates 6 cooperate to clamp the battery under the action of the return spring 12. At this time, the motor welding structure can press down on the part of the electrode sheet that is exposed and perform ultrasonic friction welding on it. After the welding is completed, the electromagnet 13 is energized to attract the metal sheet 14, causing the pressing plates 6 to release the battery, and the welded battery can then be transported forward by the carrier conveyor belt 2.

[0025] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0026] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A battery electrode welding fixture, comprising a strip-shaped conveyor frame (1) with an open top, characterized in that, The strip conveyor frame (1) is movably connected to a carrying conveyor belt (2). A first drive motor (3) for driving the carrying conveyor belt (2) is installed outside the strip conveyor frame (1). Mounting frames (5) are provided on both sides of the strip conveyor frame (1) facing upwards. The two mounting frames (5) are arranged opposite each other. An extrusion plate (6) is movably arranged on one side of the two mounting frames (5). Each mounting frame (5) has multiple sliding connection holes (9) facing the corresponding extrusion plate (6). Each extrusion plate (6) is connected to multiple connecting slide shafts (10) that are slidably connected to the corresponding sliding connection holes (9). Each shaft (10) is fitted with a return spring (12) located between the corresponding extrusion piece (6) and the corresponding mounting bracket (5). Each mounting bracket (5) is equipped with an electromagnet (13). Each extrusion piece (6) is provided with a metal piece (14) that can be magnetically attracted on the side facing the corresponding electromagnet (13). A strip pressing frame (15) is provided above the strip conveyor frame (1) along its length direction. The strip pressing frame (15) is movably connected to an electrode pressing conveyor belt (16). A second drive motor (18) for driving the electrode pressing conveyor belt (16) is installed outside the strip conveyor frame (1).

2. The battery electrode welding fixture according to claim 1, characterized in that, Each extrusion sheet (6) has a blocking strip (7) vertically inward on one side facing the tail end of the strip conveyor (1).

3. The battery electrode welding fixture according to claim 1, characterized in that, Each connecting slide (10) is provided with a limit cap (11) at the end away from the corresponding extrusion piece (6).

4. The battery electrode welding fixture according to claim 1, characterized in that, Each extrusion sheet (6) has a rubber gasket (8) on the opposite side.

5. The battery electrode welding fixture according to claim 1, characterized in that, The strip conveyor frame (1) is rotatably connected to a plurality of support rollers (4) distributed along its length, and each support roller (4) is in contact with the upper side of the carrying conveyor belt (2).

6. The battery electrode welding fixture according to claim 1, characterized in that, The electrode pressing conveyor belt (16) is disposed on one side of the strip pressing frame (15). Both ends of the strip pressing frame (15) are rotatably connected to drive shafts (17) within the electrode pressing conveyor belt (16). The power output shaft of the second drive motor (18) is connected to one end of one of the drive shafts (17).

7. The battery electrode welding fixture according to claim 6, characterized in that, Each drive shaft (17) is provided with several drive teeth, and the electrode pressing conveyor belt (16) is a rack conveyor belt that meshes with the drive teeth.

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