Lithium battery pack pole piece welding device

Abstract

The application discloses a lithium battery PACK pole piece welding device, relates to the pole piece welding technical field, and comprises a fixed bottom plate, characterized in that: the fixed bottom plate is fixedly installed with a positioning back plate, two groups of clamping side plates are movably arranged on the positioning back plate, a battery pack is placed on the fixed bottom plate, two groups of mounting brackets are fixedly installed on the fixed bottom plate, a mounting frame is rotatably installed between the two groups of mounting brackets, and a motor is fixedly installed at one end of the mounting bracket, and the output shaft of the motor is fixedly connected with the rotating shaft of the mounting frame. The fixed main plate and the pole piece positioning rod can position the electrode piece, the electrode piece can be fixed on the pole piece positioning rod in advance, the electrode piece is covered on the position of the electrode of the battery pack by the mode of overturning the fixed main plate, accurate positioning of the electrode piece is realized, and the electrode piece is still in the state of being pressed and positioned in the process of welding.

Description

Technical Field

[0001] This invention relates to the field of electrode welding technology, specifically to a lithium battery PACK electrode welding device. Background Technology

[0002] First, the placement of electrode plates is highly dependent on manual labor, making it difficult to guarantee accuracy and efficiency. Operators must manually pick up, align, and place each individual electrode plate onto the battery tab. This process is not only inefficient but also prone to misalignment and tilting due to human fatigue or visual errors. Consequently, the contact area and fit between the electrode plate and the tab cannot be consistently guaranteed.

[0003] Secondly, the resulting risks and costs of correcting "misplaced" and "cold" welds are extremely high. If incorrect or tilted electrode plates are not detected before welding, it will directly lead to cold or misaligned welds. These defects are difficult to detect visually after welding, but they can cause uneven internal resistance and abnormal heating in the battery module, and in severe cases, cause malfunctions. Rework requires a lot of time for positioning, removal, and rewelding, and may even damage expensive battery cells. The cost of correction far exceeds the cost of prevention.

[0004] Furthermore, existing semi-automated solutions lack adaptability. Although some auxiliary tooling uses fixed fixtures, these are usually designed for a single product and lack flexibility. Faced with the need for frequent product changes, adjustments are time-consuming and complex, failing to fundamentally solve the pain point of rapid and accurate electrode sheet adaptation in multi-variety production. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium battery PACK electrode welding device to solve the problems mentioned in the background art, such as the insufficient accuracy of electrode placement due to reliance on manual handling and the fact that conventionally placed electrode sheets may not be in close contact with the electrode.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lithium battery PACK electrode welding device, comprising a fixed base plate, characterized in that: a positioning rear plate is fixedly installed on the fixed base plate, two sets of clamping side plates are movably arranged on the positioning rear plate, a battery pack is placed on the fixed base plate, two sets of mounting brackets are fixedly installed on the fixed base plate, a mounting frame is rotatably installed between the two sets of mounting brackets, a motor is fixedly installed at one end of the mounting bracket and the output shaft of the motor is fixedly connected to the rotating shaft of the mounting frame, a fixed main board is fixedly installed on the mounting frame, and electrode positioning rods are movably arranged in an array on the fixed main board;

[0007] The electrode clamping mechanism includes clamping half-rings and movable long rods. Two sets of clamping half-rings are provided on each electrode positioning rod. Two sets of movable long rods are movably provided on the front and rear sides of the fixed main board. The clamping half-rings are movably mounted on the movable long rods.

[0008] The positioning mechanism includes a fourth sliding block, a fourth sliding groove, and a square block. The fourth sliding block is fixedly installed on each of the clamping side plates. Two sets of fourth sliding grooves are opened on the positioning rear plate. The fourth sliding block slides in the fourth sliding groove. A square block is rotatably installed on the clamping side plate on the right side.

[0009] A vacuuming mechanism, comprising a clamp-shaped box and a ventilation pipe, wherein the clamp-shaped box is movably disposed on the front side of the mounting frame and the ventilation pipe is fixedly mounted on the clamp-shaped box.

[0010] Preferably, the electrode clamping mechanism further includes a movable frame, a first screw sleeve, a first screw rod, a movable long slot, and a damping pad. One end of the electrode positioning rod is fixedly mounted with the movable frame, and the first screw sleeve is fixedly mounted on the movable frame. The first screw sleeve is threaded onto the first screw rod. The fixed main board has two sets of movable long slots, and the movable frame slides within the movable long slots. Damping pads are fixedly mounted on both the front and rear sides of the fixed main board, and the first screw rod abuts against the damping pads.

[0011] Preferably, the electrode clamping mechanism further includes clamping semi-rings, flexible pads, and mounting side frames. Two sets of clamping semi-rings are movably mounted on a set of electrode positioning rods. Flexible pads are fixedly mounted on opposite sides of the upper end of each clamping semi-ring. Two sets of mounting side frames are fixedly mounted on the electrode positioning rods. The shape and length of the mounting side frames are adapted to the shape and length of the electrode sheet.

[0012] Preferably, the electrode clamping mechanism further includes a first movable groove, a movable rod, a rack, a limiting rod, and a gear. One end of the electrode positioning rod has a first movable groove, and the movable rod is movably inserted into the first movable groove. One end of the movable rod is fixedly installed on the clamping half-ring. On the opposite sides of the two sets of clamping half-rings on the same set of electrode positioning rods, racks and limiting rods are fixedly installed. The limiting rods are movably inserted into the opposite racks. A gear is rotatably installed at the center position of the lower side of the electrode positioning rod, and both sets of racks mesh with the gear.

[0013] Preferably, the electrode clamping mechanism further includes a first sliding block, a first sliding groove, a second sliding block, a first guide hole, a second sliding groove, a first guide rod, a hinge plate, a movable plate, a second screw sleeve, and a second screw. A first sliding block is fixedly installed on the movable rod. Each movable rod has a first sliding groove, and the first sliding block is slidably installed within the first sliding groove. A second sliding block is fixedly installed at each end of the movable rod, and a first guide hole is provided on each of the second sliding blocks. Two sets of second sliding grooves are provided at both ends of the fixed main plate, and the second sliding block slides within the second sliding groove. A first guide rod is fixedly installed within the second sliding groove, and the first guide rod is inserted into the first guide hole. A hinge plate is rotatably installed at the center of the lower side of the movable rod. The two ends of the two sets of hinge plates are hinged to the same movable plate. A second screw sleeve is fixedly installed at the center of the movable plate, and the second screw sleeve is threaded onto the second screw. The second screw is rotatably installed at the center of the lower side of the fixed main plate.

[0014] Preferably, the electrode clamping mechanism further includes a storage groove and a knob. The storage groove is provided at the center of the upper side of the fixed motherboard. The second screw is rotatably installed in the storage groove. A knob is fixedly installed on the upper side of the second screw. The knob is located in the storage groove.

[0015] Preferably, the electrode clamping mechanism further includes a positioning block, a third sliding block, a second guide hole, a third sliding groove, a second guide rod, and a first return spring. The positioning block is movably disposed on the mounting bracket. Both the front and rear sides of the positioning block are inclined surfaces. The rear side of the positioning block abuts against the front side of the battery pack. The third sliding block is fixedly installed on the left and right sides of the positioning block. The third sliding block has a second guide hole. The mounting bracket has a third sliding groove. The second guide rod is fixedly installed in the third sliding groove. The second guide rod is inserted into the second guide hole. The first return spring is sleeved on the second guide rod. The third sliding block abuts against the first return spring.

[0016] Preferably, the positioning mechanism further includes a dual-head motor, a third screw, and a third screw sleeve. The dual-head motor is fixedly installed on the positioning rear plate, the third screw is fixedly installed on the output shaft of the dual-head motor, the third screw sleeve is fixedly installed on the fourth sliding block, and the third screw sleeve is threaded onto the third screw. The height of the square block is adapted to the diameter of the left clamping side plate, and the width of the square block is adapted to the width of a group of battery cells in the battery pack.

[0017] Preferably, the positioning mechanism further includes a fixed circular block, a first limiting groove, a second movable groove, a square groove, an insertion rod, a second limiting groove, a square insertion block, and a second return spring. A fixed circular block is fixedly installed at one end of the square block. The fixed circular block has a first limiting groove. The end of the clamping side plate on the right side has a second movable groove. A square groove is opened on one side of the second movable groove. An insertion rod is movably inserted into the second movable groove. A square insertion block is fixedly installed at the end of the insertion rod. The square insertion block is inserted into the square groove. The insertion rod has a second limiting groove. The insertion rod is inserted into the first limiting groove. A second return spring is sleeved on the insertion rod.

[0018] Preferably, the dust collection mechanism further includes a fourth sliding block, a fourth sliding groove, a third screw sleeve, a square block, a fixed round block, and a first limiting groove. The ventilation pipe is connected to an external exhaust fan. The clamp-shaped box has two sets of dust-clearing grooves, which are opposite to the upper and lower sides of the electrode positioning rod. A fixed vertical plate is fixedly installed on the lower side of the clamp-shaped box. A third guide hole is opened on the lower side of the fixed vertical plate. A third guide rod is fixedly installed on the front side of the fixed base plate. The third guide rod is inserted into the third guide hole. The front sides of the fixed vertical plate and the fixed base plate abut against each other. An electrostatic rod is fixedly installed inside the clamp-shaped box. An electrostatic generator is fixedly installed on one side of the clamp-shaped box.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention uses a fixed main board and an electrode positioning rod that can position the electrode sheet, so that the electrode sheet can be fixed on the electrode positioning rod first, and then the electrode sheet is placed on the position of the electrode of the battery pack by flipping the fixed main board, so as to achieve precise positioning of the electrode sheet. In addition, the electrode sheet is still in a pressed and positioned state during the welding process, which not only prevents the electrode sheet from shifting due to accidents during welding, but also keeps the electrode sheet and the electrode in a tight fit, thus making it difficult for the weld to be poor or misaligned, and increasing the stability of the equipment during use.

[0020] 2. The position of the electrode positioning rod in this invention can be adjusted, allowing the device to adjust the position of the electrode according to the actual situation, thereby making the device highly adaptable to different battery packs. The electrode can be quickly and easily fixed on the electrode positioning rod, and can be fixed in place, allowing the user to quickly place the electrode on the battery pack, increasing the convenience of using the device. A dust collection mechanism is also provided so that the electrode can be pre-cleaned, increasing the functionality of the device during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0022] Figure 2This is a schematic diagram illustrating the structure used in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the electrode clamping mechanism provided in an embodiment of the present invention;

[0024] Figure 4 This is a structural schematic diagram of the fixed motherboard provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the fixed motherboard provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure at the positioning block provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the positioning mechanism provided in an embodiment of the present invention;

[0028] Figure 8 This is a structural schematic diagram of the square block provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the dust collection mechanism provided in an embodiment of the present invention;

[0030] Figure 10 Provided for embodiments of the present invention Figure 4 A magnified view of part A in the diagram;

[0031] Figure 11 Provided for embodiments of the present invention Figure 5 A magnified view of part B in the diagram.

[0032] In the diagram: 1. Fixed base plate; 2. Positioning rear plate; 3. Clamping side plate; 4. Battery pack; 5. Mounting bracket; 6. Mounting frame; 7. Fixed main board; 8. Electrode positioning rod; 9. Electrode clamping mechanism; 901. Movable frame; 902. First screw sleeve; 903. First screw; 904. Movable long slot; 905. Damping rubber pad; 906. Clamping semi-ring; 907. Flexible pad; 908. Mounting side frame; 909. First movable slot; 9 10. Movable rod; 911. Rack; 912. Limiting rod; 913. Gear; 914. First sliding block; 915. Movable long rod; 916. First sliding groove; 917. Second sliding block; 918. First guide hole; 919. Second sliding groove; 920. First guide rod; 921. Hinge plate; 922. Movable plate; 923. Second threaded sleeve; 924. Second screw; 925. Storage groove; 926. Knob; 9 27. Positioning block; 928. Third sliding block; 929. Second guide hole; 930. Third sliding groove; 931. Second guide rod; 932. First return spring; 10. Positioning mechanism; 1001. Dual-head motor; 1002. Third screw; 1003. Fourth sliding block; 1004. Fourth sliding groove; 1005. Third screw sleeve; 1006. Square block; 1007. Fixed round block; 1008. First limiting groove; 1009. Second movable slot; 1010. Square slot; 1011. Insertion rod; 1012. Second limiting slot; 1013. Square insertion block; 1014. Second return spring; 11. Dust suction mechanism; 1101. Clamp-shaped box; 1102. Ventilation pipe; 1103. Dust venting slot; 1104. Fixed vertical plate; 1105. Third guide hole; 1106. Third guide rod; 1107. Static bar; 1108. Static generator. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-11The present invention provides a technical solution: a lithium battery PACK electrode welding device, including a fixed base plate 1, a positioning rear plate 2 fixedly installed on the fixed base plate 1, two sets of clamping side plates 3 movably arranged on the positioning rear plate 2, a battery pack 4 placed on the fixed base plate 1, two sets of mounting brackets 5 fixedly installed on the fixed base plate 1, a mounting frame 6 rotatably installed between the two sets of mounting brackets 5, a motor fixedly installed at one end of the mounting bracket 5 and the output shaft of the motor fixedly connected to the rotating shaft of the mounting frame 6, a fixed main board 7 fixedly installed on the mounting frame 6, and electrode positioning rods 8 movably arranged in an array on the fixed main board 7;

[0035] The electrode clamping mechanism 9 includes a clamping half ring 906 and a movable long rod 915. Two sets of clamping half rings 906 are provided on each electrode positioning rod 8. Two sets of movable long rods 915 are movably provided on the front and rear sides of the fixed main board 7. The clamping half rings 906 are movably mounted on the movable long rods 915.

[0036] The positioning mechanism 10 includes a fourth sliding block 1003, a fourth sliding groove 1004 and a square block 1006. The fourth sliding block 1003 is fixedly installed on the clamping side plate 3. Two sets of fourth sliding grooves 1004 are opened on the positioning rear plate 2. The fourth sliding block 1003 slides in the fourth sliding groove 1004. The square block 1006 is rotatably installed on the clamping side plate 3 on the right side.

[0037] The vacuuming mechanism 11 includes a clamp box 1101 and a ventilation pipe 1102. The clamp box 1101 is movably disposed on the front side of the mounting frame 6, and the ventilation pipe 1102 is fixedly installed on the clamp box 1101.

[0038] The electrode sheet used to connect the electrodes of battery pack 4 has an arc-shaped bend at the center to compensate for the slight deformation that battery pack 4 may undergo during use. The shape of the electrode positioning rod 8 is adapted to the central arc position of the electrode sheet, thereby completing the quick placement and positioning of the electrode sheet and preventing the electrode sheet from being skewed, which increases the stability of the equipment during use. The equipment is also equipped with movable clamping side plate 3 and positioning block 927, which allows the position of battery pack 4 to be corrected, thereby accurately matching the electrode sheet and increasing the accuracy of electrode sheet welding. A dust suction mechanism 11 is also provided to absorb dust and impurities on the electrode sheet, increasing the functionality of the equipment during use.

[0039] Furthermore, the electrode clamping mechanism 9 also includes a movable frame 901, a first threaded sleeve 902, a first screw 903, a movable long groove 904, and a damping pad 905. One end of the electrode positioning rod 8 is fixedly installed with the movable frame 901, and the first threaded sleeve 902 is fixedly installed on the movable frame 901. The first threaded sleeve 902 is threaded onto the first screw 903. The fixed main board 7 has two sets of movable long grooves 904. The movable frame 901 slides in the movable long grooves 904. Damping pads 905 are fixedly installed on both the front and rear sides of the fixed main board 7. The first screw 903 abuts against the damping pads 905. This structure is an adjustment structure for the position of the electrode positioning rod 8. The electrode positioning rod 8 is positioned by the first screw 903 and the damping pad 905 abutting each other. It has the ability to adjust the position steplessly and is suitable for fine adjustment of the position of the electrode positioning rod 8. In the auxiliary structure of the electrode positioning rod 8, the upper side of the electrode positioning rod 8 is in the highest position, so that the electrode plate placed on the electrode positioning rod 8 can be in the highest position. After reversing, the electrode plate can be in the lowest position, so that the placement of the electrode plate will not be obstructed, and the stability of the equipment during use is increased.

[0040] Furthermore, the electrode clamping mechanism 9 also includes clamping semi-rings 906, flexible pads 907, and mounting side frames 908. Two sets of clamping semi-rings 906 are movably mounted on a set of electrode positioning rods 8. Flexible pads 907 are fixedly mounted on opposite sides of the upper end of the clamping semi-rings 906. Two sets of mounting side frames 908 are fixedly mounted on the electrode positioning rods 8. The shape and length of the mounting side frames 908 are adapted to the shape and length of the electrode sheet. This structure allows the electrode sheet to be stably placed on the electrode positioning rods 8 without tilting. The clamping semi-rings 906 limit the front and rear positions of the electrode sheet, increasing the stability and convenience of electrode sheet placement. The hollow mounting side frames 908 not only allow welding to be performed directly but also expose most of the electrode sheet, allowing the electrode sheet to be cleaned by the dust collection mechanism 11, increasing the functionality of the equipment during use.

[0041] Furthermore, the electrode clamping mechanism 9 also includes a first movable groove 909, a movable rod 910, a rack 911, a limiting rod 912, and a gear 913. One end of the electrode positioning rod 8 is provided with a first movable groove 909, and the movable rod 910 is movably inserted into the first movable groove 909. One end of the movable rod 910 is fixedly installed on the clamping half ring 906. On the opposite sides of the two sets of clamping half rings 906 on the same set of electrode positioning rods 8, racks 911 and limiting rods 912 are fixedly installed. The limiting rods 912 are movably inserted into the opposite racks 911. A gear 913 is rotatably installed at the center position of the lower side of the electrode positioning rod 8. Both sets of racks 911 mesh with the gear 913. This structure allows the two sets of clamping half-rings 906 to move in opposite directions, so that the electrode sheet can be clamped by the clamping half-rings 906, increasing the functionality of the device. Furthermore, the two sets of clamping half-rings 906 can move synchronously, so that the position of the electrode sheet can be corrected when it is fixed, increasing the functionality of the device during use.

[0042] Furthermore, the electrode clamping mechanism 9 also includes a first sliding block 914, a first sliding groove 916, a second sliding block 917, a first guide hole 918, a second sliding groove 919, a first guide rod 920, a hinge plate 921, a movable plate 922, a second screw sleeve 923, and a second screw 924. The first sliding block 914 is fixedly installed on the movable rod 910, and each movable long rod 915 has a first sliding groove 916. The first sliding block 914 is slidably installed within the first sliding groove 916. A second sliding block 917 is fixedly installed at the end of each movable long rod 915, and each second sliding block 917 has a first guide hole 918. Two sets of second sliding grooves 919 are provided at both ends of the fixed main board 7. The second sliding block 917 slides in the second sliding groove 919. A first guide rod 920 is fixedly installed in the second sliding groove 919. The first guide rod 920 is inserted into the first guide hole 918. A hinge plate 921 is rotatably installed at the center of the lower side of the movable long rod 915. The two ends of the two sets of hinge plates 921 are hinged to the same set of movable plates 922. A second screw sleeve 923 is fixedly installed at the center of the movable plate 922. The second screw sleeve 923 is threaded onto the second screw 924. The second screw 924 is rotatably installed at the center of the lower side of the fixed main board 7. This structure is designed for the opposing movement of the clamping half ring 906. The opposing movement of the movable long rod 915 is adjusted by rotating the second screw 924, thereby allowing the clamping half ring 906 to move in opposite directions. This opposing movement is not affected by the lateral adjustment of the electrode positioning rod 8, increasing the stability of the equipment during use.

[0043] Furthermore, the electrode clamping mechanism 9 also includes a storage groove 925 and a knob 926. The storage groove 925 is located at the center of the upper side of the fixed main board 7. The second screw 924 is rotatably installed in the storage groove 925, and the knob 926 is fixedly installed on the upper side of the second screw 924. The knob 926 is located in the storage groove 925. This structure allows the position of the movable long rod 915 to be adjusted on both sides of the fixed main board 7. After welding, the clamping half ring 906 can be released, and the knob 926 can be stored in the storage groove 925. This allows the electrode to be in contact with the electrode of the battery pack 4 when the fixed main board 7 is flipped, without being obstructed by the knob 926.

[0044] Furthermore, the electrode clamping mechanism 9 also includes a positioning block 927, a third sliding block 928, a second guide hole 929, a third sliding groove 930, a second guide rod 931, and a first return spring 932. The positioning block 927 is movably mounted on the mounting bracket 5. Both the front and rear sides of the positioning block 927 are inclined surfaces. The rear side of the positioning block 927 abuts against the front side of the battery pack 4. The third sliding block 928 is fixedly mounted on the left and right sides of the positioning block 927. The third sliding block 928 has a second guide hole 929. The mounting bracket 5 has a third sliding groove 930. The second guide rod 931 is fixedly mounted in the third sliding groove 930. The second guide rod 931 is inserted into the second guide hole 929. The first return spring 932 is sleeved on the second guide rod 931. The third sliding block 928 abuts against the first return spring 932. This structure is the positioning structure of the battery pack 4, which allows the battery pack 4 to move closer to the positioning back plate 2 by squeezing the positioning block 927 to descend when the fixed motherboard 7 is flipped, thereby completing the limitation of the battery pack 4 in the front and rear positions, increasing the convenience and stability of the equipment during use.

[0045] Furthermore, the positioning mechanism 10 also includes a dual-head motor 1001, a third screw 1002, and a third screw sleeve 1005. The dual-head motor 1001 is fixedly installed on the positioning rear plate 2, the third screw 1002 is fixedly installed on the output shaft of the dual-head motor 1001, and the third screw sleeve 1005 is fixedly installed on the fourth sliding block 1003. The third screw sleeve 1005 is threaded onto the third screw 1002. The height of the square block 1006 matches the diameter of the left clamping side plate 3, and the width of the square block 1006 matches the width of a group of battery cells in the battery pack 4. This structure is the positioning structure for the battery pack 4. By moving the clamping side plate 3 in opposite directions, the battery pack 4 is limited in the left and right directions. In conjunction with the above structure, the battery pack 4 is limited, thus completing the complete positioning of the battery pack 4 and increasing the functionality of the equipment during use.

[0046] Furthermore, the positioning mechanism 10 also includes a fixed circular block 1007, a first limiting groove 1008, a second movable groove 1009, a square groove 1010, an insertion rod 1011, a second limiting groove 1012, a square insertion block 1013, and a second return spring 1014. A fixed circular block 1007 is fixedly installed at one end of the square block 1006. The fixed circular block 1007 has a first limiting groove 1008, and the end of the clamping side plate 3 on the right side has a second movable groove 1010. 09. A square groove 1010 is provided on one side of the second movable groove 1009. An insertion rod 1011 is movably inserted into the second movable groove 1009. A square insertion block 1013 is fixedly installed at the end of the insertion rod 1011. The square insertion block 1013 is inserted into the square groove 1010. A second limiting groove 1012 is provided on the insertion rod 1011. The insertion rod 1011 is inserted into the first limiting groove 1008. A second return spring 1014 is sleeved on the insertion rod 1011. This structure is a limiting structure for the rotation of the square block 1006. The function of the square block 1006 is to adjust the centering position of the battery pack 4 when the number of cells in the battery pack 4 is odd, so that the position of the electrode positioning rod 8 does not need to be adjusted frequently, increasing the convenience of using the equipment.

[0047] Furthermore, the dust collection mechanism 11 also includes a fourth sliding block 1003, a fourth sliding groove 1004, a third screw sleeve 1005, a square block 1006, a fixed round block 1007, and a first limiting groove 1008. The ventilation pipe 1102 is connected to an external exhaust fan. Two sets of dust passage grooves 1103 are provided on the clamp box 1101. The dust passage grooves 1103 are opposite to the upper and lower sides of the electrode positioning rod 8. A fixed vertical plate 1104 is fixedly installed on the lower side of the clamp box 1101. A third guide hole 1105 is provided on the lower side of the fixed vertical plate 1104. A third guide rod 1106 is fixedly installed on the front side of the fixed base plate 1. The third guide rod 1106 is inserted into the third guide hole 1105. The fixed vertical plate 1104 and the front side of the fixed base plate 1 abut against each other. An electrostatic rod 1107 is fixedly installed inside the clamp box 1101. An electrostatic generator 1108 is fixedly installed on one side of the clamp box 1101. This structure is designed to adsorb dust from the electrode sheet. It uses negative pressure and electrostatics to adsorb dust and impurities on the electrode sheet, making the welding process smoother.

[0048] Working principle: When using this invention, the device is in Figure 1Positioned with the base plate 1 on one side of the welding machine, the electrode sheet is placed at the electrode positioning rod 8. At this time, the electrode sheet is fixed between the clamping half rings 906. After placement, the second screw 924 is rotated, and the movable plate 922 is driven to rise through the thread action between it and the second screw sleeve 923. At this time, the hinge plate 921 gradually becomes horizontal, causing the movable long rod 915 to move away from each other, thereby causing the clamping half rings 906 near the fixed main plate 7 to move towards the electrode sheet. During the movement, the rack 911 will move, and through the meshing with the gear 913, another set of racks 911 will move, thereby causing the two sets of clamping half rings 906 to move closer to each other, realizing the clamping and positioning of the electrode sheet. After the electrode sheet is fixed, the fixed vertical plate 1104 is held to move the clamp box 1101 laterally, so that the clamp box 1101 sweeps over the electrode sheet. The dust or impurities on the electrode sheet are adsorbed by the external exhaust fan connected to the electrostatic rod 1107 and the ventilation pipe 1102.

[0049] After adsorption is complete, the motor on the mounting bracket 5 rotates the mounting frame 6, causing the fixed main board 7 to flip. During rotation, the mounting frame 6 presses against the positioning block 927, causing the positioning block 927 to descend. At this time, the positioning block 927 presses against the battery pack 4, allowing the position of the battery pack 4 to be corrected. Then, the dual-head motor 1001 starts, and the rotation of the third screw 1002, through the threaded engagement with the third screw sleeve 1005, drives the fourth sliding block 1003 to move closer, causing the clamping side plate 3 to clamp the battery pack 4 until the electrode sheet and the electrode of the battery pack 4 are in contact. The welding machine welds the electrode sheet. After welding, the knob 926 is rotated, causing the clamping half ring 906 to release the electrode sheet. Then, the mounting frame 6 is flipped to detach the electrode sheet.

[0050] If the number of cells in battery pack 4 is odd, pull the insertion rod 1011 to disengage the square insertion block 1013 from the square slot 1010, and then rotate the insertion rod 1011 to flip the square block 1006, thereby increasing the spacing between the square block 1006 and the clamping side plate 3.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery PACK electrode welding device, comprising a fixed base plate (1), characterized in that: A positioning rear plate (2) is fixedly installed on the fixed base plate (1). Two sets of clamping side plates (3) are movably arranged on the positioning rear plate (2). A battery pack (4) is placed on the fixed base plate (1). Two sets of mounting brackets (5) are fixedly installed on the fixed base plate (1). A mounting frame (6) is rotatably installed between the two sets of mounting brackets (5). A motor is fixedly installed at one end of the mounting bracket (5), and the output shaft of the motor is fixedly connected to the rotating shaft of the mounting frame (6). A fixed main board (7) is fixedly installed on the mounting frame (6). An array of electrode positioning rods (8) are movably arranged on the fixed main board (7). The electrode clamping mechanism (9) includes a clamping half ring (906) and a movable long rod (915). Two sets of clamping half rings (906) are provided on each electrode positioning rod (8). Two sets of movable long rods (915) are movably provided on the front and rear sides of the fixed main board (7). The clamping half ring (906) is movably mounted on the movable long rod (915). The positioning mechanism (10) includes a fourth sliding block (1003), a fourth sliding groove (1004) and a square block (1006). The fourth sliding block (1003) is fixedly installed on the clamping side plate (3). Two sets of fourth sliding grooves (1004) are opened on the positioning rear plate (2). The fourth sliding block (1003) slides in the fourth sliding groove (1004). The square block (1006) is rotatably installed on the clamping side plate (3) on the right side. The vacuuming mechanism (11) includes a clamp box (1101) and a ventilation pipe (1102). The clamp box (1101) is movably disposed on the front side of the mounting frame (6), and the ventilation pipe (1102) is fixedly installed on the clamp box (1101).

2. The lithium battery PACK electrode welding device according to claim 1, characterized in that: The electrode clamping mechanism (9) further includes a movable frame (901), a first screw sleeve (902), a first screw (903), a movable long slot (904), and a damping pad (905). One end of the electrode positioning rod (8) is fixedly installed with the movable frame (901). The first screw sleeve (902) is fixedly installed on the movable frame (901). The first screw sleeve (902) is threaded onto the first screw (903). The fixed main plate (7) has two sets of movable long slots (904). The movable frame (901) slides in the movable long slots (904). Damping pads (905) are fixedly installed on both the front and rear sides of the fixed main plate (7). The first screw (903) abuts against the damping pads (905).

3. The lithium battery PACK electrode welding device according to claim 1, characterized in that: The electrode clamping mechanism (9) further includes a clamping half ring (906), a flexible pad (907), and a mounting side frame (908). Two sets of clamping half rings (906) are movably mounted on a set of electrode positioning rods (8). Flexible pads (907) are fixedly mounted on opposite sides of the upper end of the clamping half rings (906). Two sets of mounting side frames (908) are fixedly mounted on the electrode positioning rods (8). The shape and length of the mounting side frames (908) are adapted to the shape and length of the electrode sheet.

4. The lithium battery PACK electrode welding device according to claim 1, characterized in that: The electrode clamping mechanism (9) further includes a first movable groove (909), a movable rod (910), a rack (911), a limiting rod (912), and a gear (913). One end of the electrode positioning rod (8) is provided with a first movable groove (909). The movable rod (910) is movably inserted in the first movable groove (909). One end of the movable rod (910) is fixedly installed on the clamping half ring (906). On the same set of electrode positioning rods (8), racks (911) and limiting rods (912) are fixedly installed on opposite sides of the two sets of clamping half rings (906). The limiting rods (912) are movably inserted in the opposite racks (911). A gear (913) is rotatably installed at the center position of the lower side of the electrode positioning rod (8). Both sets of racks (911) mesh with the gear (913).

5. The lithium battery PACK electrode welding device according to claim 4, characterized in that: The electrode clamping mechanism (9) further includes a first sliding block (914), a first sliding groove (916), a second sliding block (917), a first guide hole (918), a second sliding groove (919), a first guide rod (920), a hinge plate (921), a movable plate (922), a second screw sleeve (923), and a second screw (924). The first sliding block (914) is fixedly installed on the movable rod (910), and the first sliding groove (916) is opened on each of the movable long rods (915). The first sliding block (914) is slidably installed in the first sliding groove (916), and the second sliding block (917) is fixedly installed on the end of each of the movable long rods (915). The second sliding block (917) is opened on each of the second sliding blocks (918). Two sets of second sliding grooves (919) are provided at both ends of the fixed main board (7). The second sliding block (917) slides in the second sliding groove (919). A first guide rod (920) is fixedly installed in the second sliding groove (919). The first guide rod (920) is inserted into the first guide hole (918). A hinge plate (921) is rotatably installed at the center position of the lower side of the movable long rod (915). The two ends of the two sets of hinge plates (921) are hinged to the same set of movable plates (922). A second screw sleeve (923) is fixedly installed at the center position of the movable plate (922). The second screw sleeve (923) is threaded onto the second screw rod (924). The second screw rod (924) is rotatably installed at the center position of the lower side of the fixed main board (7).

6. The lithium battery PACK electrode welding device according to claim 5, characterized in that: The electrode clamping mechanism (9) further includes a storage groove (925) and a knob (926). The storage groove (925) is provided at the center of the upper side of the fixed main board (7). The second screw (924) is rotatably installed in the storage groove (925). The knob (926) is fixedly installed on the upper side of the second screw (924). The knob (926) is located in the storage groove (925).

7. The lithium battery PACK electrode welding device according to claim 5, characterized in that: The electrode clamping mechanism (9) further includes a positioning block (927), a third sliding block (928), a second guide hole (929), a third sliding groove (930), a second guide rod (931), and a first return spring (932). The positioning block (927) is movably mounted on the mounting bracket (5). The front and rear sides of the positioning block (927) are both inclined surfaces. The rear side of the positioning block (927) abuts against the front side of the battery pack (4). The third sliding block (928) is fixedly mounted on the left and right sides of the positioning block (927). The third sliding block (928) has a second guide hole (929) and the mounting bracket (5) has a third sliding groove (930). A second guide rod (931) is fixedly installed in the third sliding groove (930). The second guide rod (931) is inserted into the second guide hole (929). A first return spring (932) is sleeved on the second guide rod (931). The third sliding block (928) abuts against the first return spring (932).

8. The lithium battery PACK electrode welding device according to claim 1, characterized in that: The positioning mechanism (10) also includes a dual-head motor (1001), a third screw (1002), and a third screw sleeve (1005). The dual-head motor (1001) is fixedly installed on the positioning back plate (2). The third screw (1002) is fixedly installed on the output shaft of the dual-head motor (1001). The third screw sleeve (1005) is fixedly installed on the fourth sliding block (1003). The third screw sleeve (1005) is threaded onto the third screw (1002). The height of the square block (1006) is adapted to the diameter of the clamping side plate (3) on the left side. The width of the square block (1006) is adapted to the width of a group of cells in the battery pack (4).

9. The lithium battery PACK electrode welding device according to claim 1, characterized in that: The positioning mechanism (10) further includes a fixed circular block (1007), a first limiting groove (1008), a second movable groove (1009), a square groove (1010), an insertion rod (1011), a second limiting groove (1012), a square insertion block (1013), and a second return spring (1014). A fixed circular block (1007) is fixedly installed at one end of the square block (1006). The fixed circular block (1007) has a first limiting groove (1008) on it. The end of the clamping side plate (3) on the right side has a second movable groove (1009). A square groove (1010) is provided on one side of the second movable groove (1009). An insertion rod (1011) is movably inserted into the second movable groove (1009). A square insertion block (1013) is fixedly installed at the end of the insertion rod (1011). The square insertion block (1013) is inserted into the square groove (1010). A second limiting groove (1012) is provided on the insertion rod (1011). The insertion rod (1011) is inserted into the first limiting groove (1008). A second return spring (1014) is sleeved on the insertion rod (1011).

10. A lithium battery PACK electrode welding device according to claim 1, characterized in that: The dust collection mechanism (11) further includes a fourth sliding block (1003), a fourth sliding groove (1004), a third threaded sleeve (1005), a square block (1006), a fixed round block (1007), and a first limiting groove (1008). The ventilation pipe (1102) is connected to an external exhaust fan. Two sets of dust-clearing grooves (1103) are provided on the clamp-shaped box (1101). The dust-clearing grooves (1103) are opposite to the upper and lower sides of the electrode positioning rod (8). A fixed vertical plate is fixedly installed on the lower side of the clamp-shaped box (1101). 1104), the lower side of the fixed vertical plate (1104) is provided with a third guide hole (1105), the front side of the fixed base plate (1) is fixedly installed with a third guide rod (1106), the third guide rod (1106) is inserted into the third guide hole (1105), the front side of the fixed vertical plate (1104) and the fixed base plate (1) abut against each other, the clamp box (1101) is fixedly installed with an electrostatic rod (1107), and an electrostatic generator (1108) is fixedly installed on one side of the clamp box (1101).

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