A square aluminum shell battery pack laser welding equipment

Abstract

The present invention relates to the technical field of battery shell laser welding, and specifically to a square aluminum shell battery pack laser welding device, comprising a workbench, a welding mechanism is installed on the workbench, a clamping mechanism for clamping a battery is provided on the workbench, a pressing mechanism for pressing a battery connecting piece is installed on the clamping mechanism, a protective mechanism for protecting two electrode sheets of the battery is provided on the clamping mechanism, the pressing mechanism conflicts with the protective mechanism, a feeding mechanism is installed on the workbench, and an auxiliary mechanism is installed on the feeding mechanism; before placing the battery on the clamping mechanism for clamping, the pressing mechanism is lifted to facilitate the entry of the battery, and the placed battery connecting pieces are matched with the pressing mechanism, and after releasing the pressing mechanism, multiple groups of connecting pieces are clamped simultaneously, and the welding of the connecting pieces by the welding mechanism will not be affected during clamping, so as to avoid inaccurate welding positions.

Description

Technical Field

[0001] The invention relates to the technical field of battery shell laser welding, in particular to a square aluminum shell battery pack laser welding device. Background Art

[0002] A square aluminum shell battery pack is a battery with a rectangular or cube structure. Multiple batteries connected together form a battery pack. When assembling multiple square aluminum shell battery packs, the multiple batteries are generally fixed by the outer shell, and the outer shell and the battery are welded together by a laser welding machine. When connecting multiple batteries, the connecting piece is connected to the battery by a laser welding machine to complete the series connection and power on.

[0003] However, when the current square aluminum shell battery pack laser welding equipment welds the connecting plates between multiple batteries, the connecting plates are usually neatly placed on the bottom of the welding equipment in advance, and the connecting plates are directly welded by the welding equipment. The connecting plates simply placed between two adjacent batteries are prone to shaking during transportation, and affect the welding of the connecting plates by the laser welding equipment; the electrode plates of the battery are protruding from the outside of the battery when placed, and the electrode plates are prone to shaking when the battery is placed, causing the electrode plates to fall off, affecting the installation of the electrode plates; the weight of multiple batteries is heavy, and the batteries need to be placed on the surface of the workbench when welding the connecting plates and electrode plates of the batteries. Due to the heavy weight of the batteries, it is not conducive to the placement of the batteries, and the batteries are prone to shaking when placed, causing the placed electrode plates and connecting plates to shift, which requires re-placement and wastes time. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a laser welding device for a square aluminum shell battery pack.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a square aluminum shell battery pack laser welding equipment, including a workbench, a welding mechanism is installed on the workbench, a clamping mechanism for clamping the battery is installed on the workbench, a pressing mechanism for pressing the battery connecting sheet is installed on the clamping mechanism, a protective mechanism for protecting two electrode sheets of the battery is provided on the clamping mechanism, the pressing mechanism conflicts with the protective mechanism, a feeding mechanism is installed on the workbench, and an auxiliary mechanism is installed on the feeding mechanism;

[0006] The clamping mechanism includes a placement slot, a placement slot is provided on the workbench, a baffle located outside the placement slot is fixedly connected to the workbench, a cylinder is installed on the workbench, and a clamping plate arranged opposite to the baffle is installed on the end of the cylinder. The pressing mechanism includes a fixing rod, a fixing rod is fixedly connected to the baffle, a slide is slidably connected to the fixing rod, a third spring is clamped between the slide and the fixing rod, a connecting rod corresponding to the placement slot is fixed to the side wall of the slide, multiple groups of outer shells are relatively equidistantly fixed on both sides of the connecting rod, inner rods are slidably connected to the interior of the outer shells, a pressing tube is fixed to the end of the inner rod, a plurality of buckle grooves are equidistantly provided on the inner wall of the outer shell, a convex column engaged with the buckle groove is slidably connected to the interior of the inner rod, and a fourth spring is clamped between the convex column and the inner rod.

[0007] Specifically, the cross section of the baffle is an "L"-shaped structure, and the fixing rod is located at the center of the surface of the baffle.

[0008] Specifically, the pressing mechanism further includes a handle, and the handle is fixedly connected between the connecting rod and the sliding bracket.

[0009] Specifically, the protective mechanism includes a seesaw, the side wall of the baffle is rotatably connected to the seesaw, the end of the slide is fixedly connected to a pressure rod flush with the side wall of the baffle, a side groove is opened on the side of the baffle, the interior of the side groove is slidably connected to the protective plate through an inner plate, a second spring is clamped between the inner plate and the baffle, and one end of the seesaw is located at the bottom of the protective plate.

[0010] Specifically, the seesaw is arranged obliquely, and the cross section of the protective plate is an "L"-shaped structure.

[0011] Specifically, the protection mechanism further includes a first roller and a second roller, the bottom of the pressure rod is rotatably connected to the second roller, and the end of the seesaw is rotatably connected to the first roller which is rollingly connected to the bottom of the protection plate.

[0012] Specifically, the loading mechanism includes a fixed plate, a fixed plate whose side is flush with the placement groove is fixedly connected to the workbench, a support plate is fixedly connected to the side of the fixed plate, a screw rod is rotatably connected to the inside of the fixed plate, a slider is slidably connected to the fixed plate, the slider and the screw rod are threadedly connected, the side wall of the slider is fixedly connected to a placement plate, the placement plate is arranged corresponding to the placement groove, the side wall of the placement plate is fixedly connected to a limiting plate, the thickness of the placement plate is equal to the thickness of the placement groove, a rotating rod is rotatably connected to the support plate, the end of the rotating rod is fixedly connected to the second gear, the bottom of the screw rod is fixedly connected to the first gear, the first gear is meshed with the second gear, and a crank is installed at the end of the rotating rod.

[0013] Specifically, the feeding mechanism further includes side plates, and the two sides of the fixed plate are fixedly connected with side plates, and the side plates are fixedly connected to the workbench.

[0014] Specifically, the auxiliary mechanism includes a guide plate, the support plate is fixedly connected to the guide plate, and the guide plate is rotatably connected to a plurality of rollers flush with the surface of the placement plate at equal intervals.

[0015] Specifically, the welding mechanism includes a base plate, a base plate is installed on the workbench, a middle plate is installed on the base plate, a top plate is installed on the middle plate, a slide plate is installed on the top plate, the middle plate, the top plate and the slide plate are all driven by a motor and a screw, a fixed seat is fixed to the bottom of the slide plate, a welding machine is slidably connected to the upper side of the fixed seat, a first spring is clamped between the welding machine and the fixed seat, and an air duct is fixedly connected to the fixed seat.

[0016] The beneficial effects of the present invention are:

[0017] (1) The square aluminum shell battery pack laser welding equipment described in the present invention has a pressing mechanism on the clamping mechanism. Before placing the battery in the clamping mechanism, the pressing mechanism is lifted to facilitate the entry of the battery. The placed battery connecting pieces are matched with the pressing mechanism. After releasing the pressing mechanism, multiple groups of connecting pieces can be clamped at the same time, and the welding of the connecting pieces by the welding mechanism will not be affected during the clamping, so as to avoid the welding position being inaccurate; that is, after the battery is transported to the surface of the workbench by the screw rod and the slider, the cylinder is started, and the clamping plate moves in the direction of the baffle. At this time, the battery is clamped between the clamping plate and the baffle to avoid the battery from being offset during welding and affecting the welding. When the battery is close to the surface of the workbench, the handle is pulled away from the surface of the workbench, so as to achieve the third The spring contracts, and the gap between the connecting rod, the pressing tube and the surface of the workbench becomes larger. At this time, observe whether the battery is in place. When the battery is in place, release the handle to open the third spring, then the slide moves toward the direction of the workbench, and the connecting rod drives the two sets of pressing tubes to move toward the groove on the connecting piece on the battery. When the third spring is fully reset, the pressing tube presses the connecting piece on the battery, thereby pressing the connecting pieces between multiple batteries at the same time, avoiding the offset of the connecting pieces during welding and causing inaccurate welding. Then, the distance between the two relative pressing tubes can be adjusted according to the distance between the two relative connecting pieces. When adjusting, just pull the pressing tube, and the convex column will jump and buckle inside the buckle groove to complete the adjustment of the pressing tube. When taking out the battery, just pull the handle, and turn the crank in the opposite direction to lower the battery.

[0018] (2) The square aluminum shell battery pack laser welding equipment described in the present invention can release the pressing mechanism when pressing the battery connecting piece. After the pressing mechanism is released, the protective mechanism is pressed. At this time, the pressing mechanism supports the electrode pieces at both ends of the battery to prevent the protruding electrode pieces of the battery from shaking and falling, which is beneficial to the welding of the electrode pieces; that is, after the battery is clamped by the clamping plate and the baffle, the third spring is in a contracted state, that is, the pressure rod is in a reset state, then when the pressure rod is reset, the pressure tube presses the battery connecting piece. The pressure rod further presses the seesaw. Due to the rotational connection between the seesaw and the baffle, it is more like a lever principle. The other end of the seesaw lifts the protective plate on the side of the baffle, and the second spring opens. When the protective plate is flush with the top of the baffle, the protruding part of the electrode sheet of the battery is supported to prevent the electrode sheet from falling when the battery is moved, which is beneficial to the welding of the battery. When the handle is pulled, the pressure rod is separated from the seesaw, the second spring contracts, and the protective plate is reset. The electrode sheet part of the battery is pushed out of the baffle, and the battery can be taken out by the screw rod and the slider.

[0019] (3) The square aluminum shell battery pack laser welding equipment described in the present invention has a loading mechanism on the workbench. When placing the battery, the battery is moved to the loading mechanism through the auxiliary mechanism, and the battery is lifted to the placement mechanism through the loading mechanism, which is more labor-saving and beneficial to the protection of the battery body; that is, when placing the battery, after a plurality of batteries are fixed by a fixed shell, the battery is placed on the guide plate, and a plurality of rollers are provided on the guide plate, which is beneficial to pushing the battery. When the battery is pushed onto the placement plate, the battery is located at the bottom of the placement slot. The crank is further turned to realize the rotation of the rotating rod, and the rotation of the rotating rod drives the battery to rotate. The second gear rotates, and since the first gear is meshed with the second gear, the first gear is driven to rotate in a horizontal circular direction when the rotating rod rotates. After the first gear is driven, the screw rod drives the slider to move on the fixed plate. When the limit plate conflicts with the bottom of the workbench, the placement plate is flush with the surface of the workbench. At this time, the placement plate is located inside the placement groove, and the battery is lifted. At this time, the battery is located between the baffle and the clamping plate. Placing the battery on the workbench according to this method is more labor-saving and safer, and the battery vibration can be avoided. The placed electrode sheets and connecting sheets can be prevented from falling off. After welding, the placement plate can be lowered by rotating the crank in the opposite direction, which is conducive to removing the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a laser welding device for a square aluminum shell battery pack provided by the present invention;

[0022] Figure 2 for Figure 1An enlarged schematic diagram of the structure of section A is shown;

[0023] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B is shown;

[0024] Figure 4 for Figure 1 An enlarged schematic diagram of the C-section structure is shown;

[0025] Figure 5 It is a schematic diagram of the connection structure of the baffle, the fixing plate, the slide, the pressure rod, the second roller and the seesaw of the present invention;

[0026] Figure 6 for Figure 5 An enlarged schematic diagram of the D-section structure is shown;

[0027] Figure 7 It is a schematic diagram of the connection structure of the workbench, placement groove, baffle, connecting rod, pressure tube, fixing plate, screw rod, support plate, rotating rod and crank handle of the present invention;

[0028] Figure 8 for Figure 7 An enlarged schematic diagram of the structure of part E is shown;

[0029] Fig. 9 for Figure 7 The enlarged schematic diagram of the F part structure is shown.

[0030] In the figure: 1. workbench; 2. welding mechanism; 201. bottom plate; 202. middle plate; 203. top plate; 204. slide plate; 205. screw rod; 206. fixed seat; 207. welding machine; 208. first spring; 209. air duct; 210. motor; 3. clamping mechanism; 301. cylinder; 302. clamping plate; 303. placement slot; 304. baffle; 4. feeding mechanism; 401. side plate; 402. fixed plate; 403. screw rod; 404. support plate; 405. crank; 406. placement plate; 407. limit plate; 408. rotating rod; 409. slider ;410, first gear;411, second gear;5, auxiliary mechanism;501, guide plate;502, roller;6, protection mechanism;601, seesaw;602, first roller;603, protection plate;604, inner plate;605, side groove;606, second spring;607, pressure rod;608, second roller;7, pressing mechanism;701, fixing rod;702, slide;703, third spring;704, connecting rod;705, outer shell;706, pressure tube;707, handle;708, inner rod;709, fourth spring;710, boss;711, buckle groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figure 1-Figure 9 As shown, a square aluminum shell battery pack laser welding device according to the present invention comprises a workbench 1, a welding mechanism 2 is installed on the workbench 1, a clamping mechanism 3 for clamping a battery is provided on the workbench 1, a pressing mechanism 7 for pressing a battery connecting sheet is installed on the clamping mechanism 3, a protective mechanism 6 for protecting two electrode sheets of the battery is provided on the clamping mechanism 3, the pressing mechanism 7 conflicts with the protective mechanism 6, a feeding mechanism 4 is installed on the workbench 1, and an auxiliary mechanism 5 is installed on the feeding mechanism 4;

[0033] The clamping mechanism 3 includes a placement groove 303, a placement groove 303 is opened on the workbench 1, a baffle 304 located outside the placement groove 303 is fixedly connected to the workbench 1, a cylinder 301 is installed on the workbench 1, and a clamping plate 302 arranged opposite to the baffle 304 is installed at the end of the cylinder 301. The pressing mechanism 7 includes a fixed rod 701, a fixed rod 701 is fixedly connected to the baffle 304, a slide 702 is slidably connected to the fixed rod 701, a third spring 703 is clamped between the slide 702 and the fixed rod 701, and a connecting rod 704 corresponding to the placement groove 303 is fixed on the side wall of the slide 702, and the two sides of the connecting rod 704 are relatively equidistantly fixed. There are multiple sets of shells 705, the interior of each of the shells 705 is slidably connected with an inner rod 708, the end of the inner rod 708 is fixed with a pressure tube 706, the inner wall of the shell 705 is equidistantly provided with a plurality of buckle grooves 711, the interior of the inner rod 708 is slidably connected with a convex column 710 that is buckled with the buckle groove 711, and a fourth spring 709 is clamped between the convex column 710 and the inner rod 708; the cross section of the baffle 304 is an "L"-shaped structure, and the fixed rod 701 is located at the center of the surface of the baffle 304; the pressing mechanism 7 also includes a handle 707, and the handle 707 is fixedly connected between the connecting rod 704 and the slide 702; the battery is transported to the After the surface of the workbench 1 is positioned, the cylinder 301 is started. At this time, the clamp 302 moves toward the baffle 304. At this time, the battery is clamped between the clamp 302 and the baffle 304 to prevent the battery from shifting during welding and affecting the welding. When the battery is close to the surface of the workbench 1, the handle 707 is pulled away from the surface direction of the workbench 1, so that the third spring 703 contracts and the gap between the connecting rod 704, the pressure tube 706 and the surface of the workbench 1 becomes larger. At this time, observe whether the battery is in place. When the battery is in place, release the handle 707 to open the third spring 703, and then the slide 702 moves toward the direction of the workbench 1. , the connecting rod 704 drives the two groups of pressing tubes 706 to move toward the groove on the connecting piece on the battery. When the third spring 703 is fully reset, the pressing tube 706 presses the connecting piece on the battery, thereby pressing the connecting pieces between multiple batteries at the same time, avoiding the connection pieces from shifting during welding and causing inaccurate welding. Then, the distance between the two relative pressing tubes 706 can be adjusted according to the distance between the two relative connecting pieces. When adjusting, just pull the pressing tube 706 directly. The convex column 710 jumps and buckles inside the buckle groove 711 to complete the adjustment of the pressing tube 706. When taking out the battery, pull the handle 707, and rotate the crank 405 in the opposite direction to lower the battery.

[0034] Specifically, the protection mechanism 6 includes a seesaw 601, the side wall of the baffle 304 is rotatably connected to the seesaw 601, the end of the slide 702 is fixedly connected to a pressure rod 607 flush with the side wall of the baffle 304, a side groove 605 is opened on the side of the baffle 304, and the inside of the side groove 605 is slidably connected to a protection plate 603 through an inner plate 604, a second spring 606 is clamped between the inner plate 604 and the baffle 304, and one end of the seesaw 601 is located at the protection The bottom of the guard plate 603, the seesaw 601 is tilted, and the cross section of the guard plate 603 is in an "L" shape; the protection mechanism 6 also includes a first roller 602 and a second roller 608, the bottom of the pressure rod 607 is rotatably connected to the second roller 608, and the end of the seesaw 601 is rotatably connected to the first roller 602 that is rollingly connected to the bottom of the guard plate 603; after the battery is clamped by the clamping plate 302 and the baffle 304, the third spring 70 is engaged 3 is in a retracted state, that is, the pressure rod 607 is in a reset state, then when the pressure rod 607 is reset, the pressure tube 706 presses the connecting piece of the battery, and further the pressure rod 607 presses the seesaw 601. Since the seesaw 601 is rotatably connected to the baffle 304, more in accordance with the lever principle, the other end of the seesaw 601 lifts the protective plate 603 on the side of the baffle 304, and the second spring 606 is opened. When the protective plate 603 is flush with the top of the baffle 304, the protruding part of the electrode sheet of the battery is supported to prevent the electrode sheet from falling when the battery is moved, which is beneficial to the welding of the battery. When the handle 707 is pulled, the pressure rod 607 is separated from the seesaw 601, the second spring 606 contracts, the protective plate 603 is reset, and the electrode sheet part of the battery is pushed out of the baffle 304, so that the battery can be taken out by the screw rod 403 cooperating with the slider 409.

[0035] Specifically, the feeding mechanism 4 includes a fixed plate 402, the workbench 1 is fixedly connected with a fixed plate 402 whose side is flush with the placement groove 303, the side of the fixed plate 402 is fixedly connected with a support plate 404, the internal rotation of the fixed plate 402 is connected with a screw rod 403, the fixed plate 402 is slidably connected with a slider 409, the slider 409 is threadedly connected to the screw rod 403, the side wall of the slider 409 is fixedly connected with a placement plate 406, the placement plate 406 is arranged corresponding to the placement groove 303, the side wall of the placement plate 406 is fixedly connected with a limiting plate 407, the thickness of the placement plate 406 is equal to the thickness of the placement groove 303, the support The plate 404 is rotatably connected to a rotating rod 408, the end of which is fixedly connected to a second gear 411, the bottom of the screw rod 403 is fixedly connected to a first gear 410, the first gear 410 is meshed with the second gear 411, the end of the rotating rod 408 is installed with a crank 405, the feeding mechanism 4 also includes a side plate 401, the two sides of the fixed plate 402 are fixedly connected to the side plates 401, the side plates 401 are fixedly connected to the workbench 1, the auxiliary mechanism 5 includes a guide plate 501, the support plate 404 is fixedly connected to the guide plate 501, and the guide plate 501 is rotatably connected to multiple rollers 502 that are flush with the surface of the placement plate 406 at equal intervals. When placing the batteries, after fixing the multiple batteries by the fixing shell, the batteries are placed on the guide plate 501, and the guide plate 501 is provided with multiple rollers 502, which are conducive to pushing the batteries. The batteries are pushed onto the placement plate 406. At this time, the batteries are located at the bottom of the placement groove 303. The crank 405 is further rotated to realize the rotation of the rotating rod 408. When the rotating rod 408 rotates, the second gear 411 is driven to rotate. Since the first gear 410 is meshed with the second gear 411, the first gear 410 is driven to rotate in the horizontal circumferential direction when the rotating rod 408 rotates. When the first gear 410 is engaged with the second gear 411, the first gear 410 is driven to rotate in the horizontal circumferential direction when the rotating rod 408 rotates. After a gear 410 is driven, the screw rod 403 drives the slider 409 to move on the fixed plate 402. When the limit plate 407 conflicts with the bottom of the workbench 1, the placement plate 406 is flush with the surface of the workbench 1. At this time, the placement plate 406 is located inside the placement groove 303, completing the lifting of the battery. At this time, the battery is located between the baffle 304 and the clamping plate 302. Placing the battery on the workbench 1 according to this method is more labor-saving and safer, and avoids the vibration of the battery causing the placed electrode sheets and connecting sheets to fall off. After welding is completed, the crank 405 is rotated in the opposite direction to achieve the lowering of the placement plate 406, which is conducive to removing the battery.

[0036] Specifically, the welding mechanism 2 includes a bottom plate 201, the workbench 1 is mounted with the bottom plate 201, the bottom plate 201 is mounted with an intermediate plate 202, the intermediate plate 202 is mounted with a top plate 203, the top plate 203 is mounted with a slide plate 204, the intermediate plate 202, the top plate 203 and the slide plate 204 are all driven by a motor 210 in conjunction with a screw 205, a fixed seat 206 is fixed to the bottom of the slide plate 204, a welding machine 207 is slidably connected to the upper side of the fixed seat 206, and a first spring 207 is clamped between the welding machine 207 and the fixed seat 206. 8. An air duct 209 is fixedly connected to the fixing seat 206. When welding the battery, the motor 210 can be used to control the screw 205 to drive the middle plate 202 to move. Similarly, the motor 210 can be used to control the screw 205 to drive the top plate 203 to slide. The motor 210 can be used to control the screw 205 to drive the slide plate 204 to move. In this way, the multi-axis movement of the welding machine 207 is realized to complete the welding of the battery. During welding, the welding machine 207 contacts the connecting piece, and the first spring 208 contracts to achieve pressure protection for the connecting piece.

[0037] When the present invention is used, first, when placing the battery, after fixing the multiple batteries by the fixing shell, the battery is placed on the guide plate 501, and the guide plate 501 is provided with multiple rollers 502, which are conducive to pushing the battery, and the battery is pushed to the placement plate 406. At this time, the battery is located at the bottom of the placement groove 303. The crank 405 is further rotated to realize the rotation of the rotating rod 408. When the rotating rod 408 rotates, the second gear 411 is driven to rotate. Since the first gear 410 is meshed with the second gear 411, when the rotating rod 408 rotates, the first gear 410 is driven in the horizontal circumferential direction. Rotate, when the first gear 410 is driven, the screw rod 403 drives the slider 409 to move on the fixed plate 402, and when the limit plate 407 conflicts with the bottom of the workbench 1, the placement plate 406 is flush with the surface of the workbench 1. At this time, the placement plate 406 is located inside the placement groove 303, and the battery is lifted. At this time, the battery is located between the baffle 304 and the clamping plate 302. Placing the battery on the workbench 1 according to this method is more labor-saving and safe, and the battery vibration can be avoided. The electrode sheet and the connecting sheet that have been placed can be prevented from falling off. After the welding is completed, the crank 405 can be turned in the opposite direction to realize the lowering of the placement plate 406, which is convenient for removing the battery;

[0038] Then, after the battery is transported to the surface of the workbench 1 through the screw rod 403 and the slider 409, the cylinder 301 is started, and the clamping plate 302 moves in the direction of the baffle 304. At this time, the battery is clamped between the clamping plate 302 and the baffle 304 to prevent the battery from shifting during welding and affecting the welding. When the battery is close to the surface of the workbench 1, the handle 707 is pulled away from the surface of the workbench 1, so that the third spring 703 contracts and the gap between the connecting rod 704, the pressure tube 706 and the surface of the workbench 1 becomes larger. At this time, observe whether the battery is in place. When the battery is in place, release the handle 707 to open the third spring 703, and then the slide 702 moves to the workbench 1. The connecting rod 704 drives the two groups of pressing tubes 706 to move toward the groove on the connecting piece on the battery. When the third spring 703 is fully reset, the pressing tube 706 presses the connecting piece on the battery, thereby pressing the connecting pieces between multiple batteries at the same time, thereby avoiding the connection pieces from being offset during welding and causing inaccurate welding. The distance between the two relative pressing tubes 706 can be adjusted according to the distance between the two relative connecting pieces. When adjusting, the pressing tube 706 can be directly pulled. The protruding column 710 jumps and buckles inside the buckle groove 711 to complete the adjustment of the pressing tube 706. When taking out the battery, the handle 707 can be pulled, and the crank 405 can be turned in the opposite direction to lower the battery.

[0039] Then, after the battery is clamped by the clamping plate 302 and the baffle 304, the third spring 703 is in a contracted state, that is, the pressure rod 607 is in a reset state. Then, when the pressure rod 607 is reset, the pressure tube 706 presses the connecting piece of the battery, and the pressure rod 607 further presses the seesaw 601. Due to the rotational connection between the seesaw 601 and the baffle 304, more in accordance with the lever principle, the other end of the seesaw 601 lifts the protective plate 603 on the side of the baffle 304, and the second spring 606 opens. When the protective plate 603 is flush with the top of the baffle 304, the protruding part of the electrode sheet of the battery is supported to prevent the electrode sheet from falling when the battery is moved, which is beneficial to the welding of the battery. When the handle 707 is pulled, the pressure rod 607 is separated from the seesaw 601, the second spring 606 contracts, the protective plate 603 is reset, and the electrode sheet of the battery is partially pushed out of the baffle 304, so that the battery can be taken out by the screw rod 403 cooperating with the slider 409.

[0040] Finally, when welding the battery, the motor 210 can be used to control the screw 205 to drive the middle plate 202 to move. Similarly, the motor 210 can be used to control the screw 205 to drive the top plate 203 to slide. The motor 210 can be used to control the screw 205 to drive the slide plate 204 to move. In this way, the multi-axis movement of the welding machine 207 is realized to complete the welding of the battery. During welding, the welding machine 207 contacts the connecting piece, and the first spring 208 contracts to achieve pressure protection for the connecting piece.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser welding device for square aluminum shell battery pack, characterized in that: The workbench (1) comprises a welding mechanism (2) installed on the workbench (1), a clamping mechanism (3) for clamping a battery installed on the workbench (1), a pressing mechanism (7) for pressing a battery connecting sheet installed on the clamping mechanism (3), a protective mechanism (6) for protecting two electrode sheets of the battery installed on the clamping mechanism (3), the pressing mechanism (7) abutting against the protective mechanism (6), a feeding mechanism (4) installed on the workbench (1), and an auxiliary mechanism (5) installed on the feeding mechanism (4); The clamping mechanism (3) comprises a placement groove (303), the placement groove (303) is provided on the workbench (1), a baffle (304) located outside the placement groove (303) is fixedly connected to the workbench (1), a cylinder (301) is installed on the workbench (1), a clamping plate (302) arranged opposite to the baffle (304) is installed at the end of the cylinder (301), and the pressing mechanism (7) comprises a fixing rod (701), the baffle (304) is fixedly connected to the fixing rod (701), a slide bracket (702) is slidably connected to the fixing rod (701), and a clamping plate (702) is clamped between the slide bracket (702) and the fixing rod (701). A third spring (703) is held, a connecting rod (704) corresponding to the placement groove (303) is fixed to the side wall of the slide (702), a plurality of sets of outer shells (705) are fixed at relatively equal distances on both sides of the connecting rod (704), the interior of each of the outer shells (705) is slidably connected to an inner rod (708), a pressure tube (706) is fixed to the end of the inner rod (708), a plurality of buckling grooves (711) are equidistantly formed on the inner wall of the outer shell (705), a convex column (710) buckled with the buckling groove (711) is slidably connected to the interior of the inner rod (708), and a fourth spring (709) is clamped between the convex column (710) and the inner rod (708); The protection mechanism (6) comprises a seesaw (601), the side wall of the baffle (304) is rotatably connected to the seesaw (601), the end of the slide (702) is fixedly connected to a pressure rod (607) flush with the side wall of the baffle (304), a side groove (605) is provided on the side of the baffle (304), the inside of the side groove (605) is slidably connected to a protection plate (603) via an inner plate (604), a second spring (606) is clamped between the inner plate (604) and the baffle (304), and one end of the seesaw (601) is located at the bottom of the protection plate (603); The feeding mechanism (4) comprises a fixed plate (402), the workbench (1) is fixedly connected to a fixed plate (402) whose side is flush with the placement groove (303), the side of the fixed plate (402) is fixedly connected to a support plate (404), the interior of the fixed plate (402) is rotatably connected to a screw rod (403), the fixed plate (402) is slidably connected to a slider (409), the slider (409) is threadedly connected to the screw rod (403), the side wall of the slider (409) is fixedly connected to a placement plate (406), and the placement plate (406) ) is arranged corresponding to the placement groove (303), the side wall of the placement plate (406) is fixedly connected to the limiting plate (407), the thickness of the placement plate (406) is equal to the thickness of the placement groove (303), the support plate (404) is rotatably connected to a rotating rod (408), the end of the rotating rod (408) is fixedly connected to a second gear (411), the bottom of the screw rod (403) is fixedly connected to a first gear (410), the first gear (410) is meshed with the second gear (411), and the end of the rotating rod (408) is installed with a crank (405).

2. According to claim 1, a square aluminum shell battery pack laser welding equipment is characterized in that: The cross section of the baffle (304) is in an "L"-shaped structure, and the fixing rod (701) is located at the center of the surface of the baffle (304).

3. According to claim 1, a square aluminum shell battery pack laser welding equipment is characterized in that: The pressing mechanism (7) further comprises a handle (707), and the handle (707) is fixedly connected between the connecting rod (704) and the sliding frame (702).

4. The laser welding equipment for square aluminum shell battery pack according to claim 1 is characterized in that: The seesaw (601) is arranged at an angle, and the cross section of the protective plate (603) is in an "L"-shaped structure.

5. The laser welding equipment for square aluminum shell battery pack according to claim 1 is characterized in that: The protection mechanism (6) further comprises a first roller (602) and a second roller (608); the bottom of the pressure rod (607) is rotatably connected to the second roller (608); and the end of the seesaw (601) is rotatably connected to the first roller (602) which is rollingly connected to the bottom of the protection plate (603).

6. The laser welding equipment for square aluminum shell battery pack according to claim 1 is characterized in that: The loading mechanism (4) further comprises side plates (401), and the side plates (401) are fixedly connected to both sides of the fixed plate (402), and the side plates (401) are fixedly connected to the workbench (1).

7. The laser welding equipment for square aluminum shell battery pack according to claim 1 is characterized in that: The auxiliary mechanism (5) comprises a guide plate (501), the guide plate (501) is fixedly connected to the support plate (404), and a plurality of rollers (502) flush with the surface of the placement plate (406) are rotatably connected to the guide plate (501) at equal intervals.

8. The laser welding equipment for square aluminum shell battery pack according to claim 1 is characterized in that: The welding mechanism (2) comprises a bottom plate (201), the workbench (1) is mounted with the bottom plate (201), the bottom plate (201) is mounted with an intermediate plate (202), the intermediate plate (202) is mounted with a top plate (203), the top plate (203) is mounted with a slide plate (204), the intermediate plate (202), the top plate (203) and the slide plate (204) are all driven by a motor (210) in conjunction with a screw rod (205), a fixed seat (206) is fixed at the bottom of the slide plate (204), a welding machine (207) is slidably connected to the upper portion of the fixed seat (206), a first spring (208) is clamped between the welding machine (207) and the fixed seat (206), and an air duct (209) is fixedly connected to the fixed seat (206).

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