Automatic positioning device for battery pack cover plate welding

Abstract

The application discloses a kind of automatic positioning device for battery pack cover plate welding, including double-crank rocker assembly, and the positioning seat and positioning block of parallel arrangement;Double-crank rocker assembly lower end is hinged to the bottom of one side of positioning seat, and positioning seat upper end is provided with the positioning groove for battery pack horizontal placement, and the limiting through slot for battery pack vertical placement is opened in positioning block;Double-crank rocker assembly upper end one side is connected with the upper pressing plate for pressing negative terminal of horizontal and vertical battery pack, and the driving assembly for driving the rotation of upper pressing plate towards the direction of positioning groove opening is hinged to the other side of double-crank rocker assembly upper end;The side pressing plate is provided with the pressing piece for pressing positive terminal of vertical battery pack on the side of positioning groove away from upper pressing plate, and the screw rod is screw-connected on the other side of positioning seat and rotationally connected with side pressing plate at one end, and the rotary motor is connected with the other end of screw rod, and lifting driving part is mounted on the lower end of positioning seat;The application has the advantages of high positioning and pressing efficiency, good positioning and pressing effect and high battery pack taking and placing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, more particularly, it relates to an automatic positioning device for battery pack cover plate welding. BACKGROUND

[0002] The battery pack is the main source of power for new energy vehicles, and welding process needs to be adopted in the production process of the battery pack, and the positioning welding of the negative terminal of the battery pack is particularly important. Figure 1 As shown in the prior art, a multi-tab structure is usually adopted, and when packaging the battery pack, the cover plate 43, the negative current collector 44, the battery shell 45 and the negative plate 46 need to be pressed first, and then the four sides of the gap to be welded between the cover plate 43 and the battery shell 45 are welded respectively. Because the negative current collector 44 has thickness deviation in the production process, the cover plate 43 also has different thicknesses at different positions in the structural design, and the size of the existing welding positioning tooling is usually fixed. The battery pack pressing method is usually to drive a fixed plate to be translated to the battery shell 45 at the negative terminal of the battery pack, and then manually tighten the bolts of the fixed plate to press the battery pack in the welding positioning tooling. There are problems of poor pressing or battery pack offset, which leads to poor positioning of the negative current collector 44, the battery shell 45, the cover plate 43 and the negative plate 46, low battery pack taking and placing efficiency, and the like. In addition, the above-mentioned welding positioning tooling can only position and press the gap a47 to be welded on both sides of the same length at a time, and if the other two sides of the gap b48 to be welded of different lengths need to be positioned and pressed, another tooling needs to be replaced. After welding, the thickness of the gap a47 or the gap b48 will be larger than that before welding. When taking the material, the fixed plate cannot be translated back to its original position, which causes low positioning and pressing efficiency, low battery pack taking and placing efficiency and poor positioning and pressing effect. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application aims to provide an automatic positioning device for battery pack cover plate welding, which has the advantages of high positioning and pressing efficiency, good positioning and pressing effect, and high battery pack taking and placing efficiency.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The utility model provides a kind of automatic positioning device for battery pack cover plate welding, including double-crank rocker assembly, and positioning seat and positioning block arranged side by side, the lower end of the double-crank rocker assembly is hinged with the bottom of one side of the positioning seat;Positioning slot for battery pack horizontal placement is set in the upper end of the positioning seat, and the positioning block is provided with limiting through slot for battery pack vertical placement;Upper pressing plate for pressing negative terminal of horizontal placement battery pack and vertical placement battery pack is connected on one side of the upper end of the double-crank rocker assembly, and the upper end of the double-crank rocker assembly is hinged with driving assembly for driving the upper pressing plate to rotate towards the direction of the positioning slot opening;Side pressing plate for pressing positive terminal of horizontal placement battery pack is arranged on the side of the positioning slot away from the upper pressing plate, and the side of the side pressing plate is connected with pressing member for pressing positive terminal of vertical placement battery pack, and the other side of the positioning seat is threadedly connected with screw rod, one end of the screw rod is rotatably connected with the side pressing plate, and the other end of the screw rod is connected with rotary motor for driving the screw rod to rotate, and the lower end of the positioning seat is installed with lifting driving member for taking and placing battery pack.

[0006] Further setting: the double-crank rocker assembly includes connecting rod and two cranks, the upper ends of the two cranks are hinged with the two sides of the connecting rod respectively, the lower ends of the cranks are hinged with the bottom of one side of the positioning seat, and the upper pressing plate is installed on one side of the connecting rod.

[0007] Further setting: the double-crank rocker assembly is provided with two groups, and the intermediate connecting plate is connected between the two connecting rods, the reinforcing inclined plate is connected between one side of the intermediate connecting plate and the connecting rod, and the driving end of the driving assembly is hinged with the other side of the intermediate connecting plate.

[0008] Further setting: the driving assembly includes support, rotating shaft, telescopic cylinder and T-shaped connecting block, the telescopic cylinder is hinged with the support through the rotating shaft, the top rod of the telescopic cylinder is hinged with the vertical end of the connecting block, and the horizontal end of the connecting block is detachably fixedly connected with the other side of the upper end of the double-crank rocker assembly.

[0009] Further setting: the pressing member includes connecting rod, side pressing block for pressing the upper side of the positive terminal of the vertical placement battery pack and T-shaped push rod, the connecting rod is connected between one side of the horizontal end of the push rod and one side of the side pressing plate, the other side of the positioning seat is provided with limiting channel for the connecting rod to pass through and move, the first compression spring is connected between the horizontal end of the push rod and one end of the side pressing block, the first compression spring is sleeved on the outer peripheral surface of the vertical end of the push rod, one end of the side pressing block is connected with first iron block, and the vertical end of the push rod is connected with first electromagnet magnetically connected with the first iron block.

[0010] Further setting: the lifting driving member includes push plate and lifting cylinder, the top rod of the lifting cylinder is connected with the push plate, and the bottom end of the positioning slot is provided with limiting hole for the push plate to pass through.

[0011] Further settings, one side of the positioning block is provided with a support seat and a middle pressing block for pressing the middle of the positive terminal of the vertically placed battery pack, the middle pressing block is located between the support seat and the positioning block; one end of the middle pressing block is connected with a guide rod, a through hole is formed in the upper end of the support seat for the guide rod to pass through, a stop block is arranged at one end of the guide rod, a baffle is connected to one side of the upper end of the support seat, a second compression spring is connected between the baffle and one end of the middle pressing block, a first limiting groove is formed in the other side of the upper end of the support seat for transversely placing the middle pressing block, a second iron block is arranged at one end of the middle pressing block, and a second electromagnet is arranged in the groove bottom of the first limiting groove and magnetically connected with the second iron block.

[0012] Further settings, the bottom end of the upper pressing plate is provided with an elastic soft pad.

[0013] Further settings, the other two sides of the positioning seat are provided with a yield recess for taking and placing the battery pack.

[0014] Further settings, the side pressing plate is provided with a second limiting groove for limiting the position of the positive terminal of the battery pack.

[0015] In summary, the positioning seat, the positioning groove, the positioning block and the limiting groove are used to preliminarily position the horizontally placed battery pack and the vertically placed battery pack; the rotating motor, the screw rod, the pressing member and the side pressing plate are used to automatically press the two positive terminals of the horizontally placed battery pack and the two positive terminals of the vertically placed battery pack; the driving assembly, the double-crank rocker assembly and the upper pressing plate are used to automatically position and press the horizontally placed battery pack and the vertically placed battery pack twice; when taking the material, the driving assembly drives the double-crank rocker assembly and the upper pressing plate to rotate and reset, so that the thickness of the gap a or the gap b after welding does not increase, the upper pressing plate cannot be reset, and the battery pack taking efficiency is further improved; the lifting driving member is used for feeding and taking the battery pack, and the battery pack taking efficiency is improved; after the two battery packs are welded twice, the positions of the two battery packs are exchanged, and the feeding, positioning, pressing and taking steps are repeated until the four sides of the two battery packs are welded; the whole has high automation, high positioning and pressing efficiency, good positioning and pressing effect, and high battery pack taking efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the structure of the existing battery pack;

[0017] Figure 2 It is a schematic view of the overall structure of the embodiment of the application;

[0018] Figure 3 The structure schematic diagram of the battery pack in the non-pressing state of the embodiment of the application is shown in the figure:

[0019] Figure 4 The partial sectional view of the battery pack in the pressing state of the embodiment of the application is shown in the figure;

[0020] Figure 5 The sectional view of the intermediate pressing plate and the support seat in the embodiment of the application is shown in the figure;

[0021] Figure 6 The sectional view of the pressing member in the embodiment of the application is shown in the figure.

[0022] In the figure: 1, the positioning seat; 2, the double-crank rocker assembly; 3, the positioning block; 4, the positioning groove; 5, the limiting through groove; 6, the upper pressing plate; 7, the driving assembly; 8, the side pressing plate; 9, the pressing member; 10, the screw rod; 11, the rotary motor; 12, the lifting driving member; 13, the crank; 14, the connecting rod; 15, the intermediate connecting plate; 16, the reinforcing inclined plate; 17, the support seat; 18, the rotating shaft; 19, the telescopic air cylinder; 20, the connecting block; 21, the connecting rod; 22, the side pressing block; 23, the push rod; 24, the limiting channel; 25, the first compression spring; 26, the first iron block; 27, the first electromagnet; 28, the push plate; 29, the lifting air cylinder; 30, the limiting hole; 31, the intermediate pressing block; 32, the support seat; 33, the guide rod; 34, the through hole; 35, the baffle; 36, the second compression spring; 37, the first limiting groove; 38, the second iron block; 39, the second electromagnet; 40, the giving recess; 41, the second limiting groove; 42, the stop block; 43, the cover plate; 44, the negative current collector; 45, the battery shell; 46, the negative plate; 47, the gap a; 48, the gap b. DETAILED DESCRIPTION

[0023] To make the technical content, the achieved purposes and the effects of the application clear, the following will be described in combination with the embodiments and the accompanying drawings. It should be noted that the words "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the words "bottom end" and "top end" refer to the directions towards the geometric centers of the specific components. Figure 2

[0024] ​The most critical concept of the application is that: through the positioning seat 1, the positioning groove 4, the positioning block 3 and the limiting through groove 5, the preliminary positioning of the horizontally placed battery pack and the vertically placed battery pack is realized; through the rotating motor 11, the screw rod 10, the pressing part 9 and the side pressing plate 8, the two ends of the horizontally placed battery pack and the two ends of the vertically placed battery pack are automatically pressed tightly; the function of automatically positioning and pressing the horizontally placed battery pack and the vertically placed battery pack twice is realized; through the driving assembly 7, the double-crank rocker assembly 2 and the upper pressing plate 6, when the pressing function is realized, the upper pressing plate 6 rotates and presses tightly to the battery shell of the negative end of the horizontally placed battery pack and the vertically placed battery pack in the direction of the slot opening of the positioning seat 1, the function of positioning and pressing the horizontally placed battery pack and the vertically placed battery pack three times is realized; when the material is taken, the double-crank rocker assembly 2 and the upper pressing plate 6 are rotated and reset under the driving of the driving assembly 7, so that the thickness of the gap a or the gap b after welding is not too large, the upper pressing plate 6 cannot be reset, the function of further improving the efficiency of taking and placing the battery pack is realized; through the lifting driving part 12, the function of improving the efficiency of taking and placing the battery pack is realized; after the two battery packs are completed twice, the positions of the two battery packs are exchanged, and the steps of feeding, positioning, pressing and taking are repeated until the four sides of the two battery packs are completed welding.

[0025] The application adopts automatic feeding, taking, twice pressing and four times positioning for the horizontally placed battery pack and the vertically placed battery pack at the same time, which is used for synchronous positioning and pressing of different length gap welding, at the same time, the double-crank rocker assembly 2 is adopted, the moving mode of the upper pressing plate 6 is rotary movement, which avoids the upper pressing plate 6 from being unable to reset due to the thickness of the gap a or the gap b being too large, and has the advantages of high positioning and pressing efficiency, good positioning and pressing effect and high battery pack taking and placing efficiency.

[0026] Please refer to Figures 2 to 6 The automatic positioning device for battery pack cover plate welding comprises a double-crank rocker assembly 2, a positioning seat 1 and a positioning block 3 arranged side by side, the lower end of the double-crank rocker assembly 2 is hinged to the bottom of one side of the positioning seat 1; the upper end of the positioning seat 1 is provided with a positioning groove 4 for horizontally placing a battery pack, and the positioning block 3 is provided with a limiting through groove 5 for vertically placing a battery pack; one side of the upper end of the double-crank rocker assembly 2 is connected with an upper pressing plate 6 for pressing the negative end of the horizontally placed battery pack and the vertically placed battery pack, and the other side of the upper end of the double-crank rocker assembly 2 is hinged with a driving assembly 7 for rotating the upper pressing plate 6 in the direction of the slot opening of the positioning groove 4; one side of the positioning groove 4 away from the upper pressing plate 6 is provided with a side pressing plate 8 for pressing the positive end of the horizontally placed battery pack, one side of the side pressing plate 8 is connected with a pressing part 9 for pressing the positive end of the vertically placed battery pack, the other side of the positioning seat 1 is threadedly connected with a screw rod 10, one end of the screw rod 10 is rotatably connected with the side pressing plate 8, the other end of the screw rod 10 is connected with a rotating motor 11 for driving the screw rod 10 to rotate, and the lower end of the positioning seat 1 is installed with a lifting driving part 12 for taking and placing a battery pack.

[0027] From the above description, before the negative terminal of the battery pack needs to be welded, first, by the positioning seat 1 and the positioning groove 4, take one to be welded battery pack horizontally placed in the positioning groove 4, at this time, the gap a of the battery pack is towards the slot of the positioning groove 4, the gap b of the battery pack is limited between the two groove walls of the positioning plate, which plays a role in preliminarily positioning the horizontally placed battery pack; again through the positioning block 3 and the limiting through groove 5, take another battery pack to be welded vertically placed in the limiting through groove 5, at this time, the gap b of the battery pack is towards the slot of the limiting through groove 5, the gap a of the battery pack is limited between the two groove walls of the positioning plate, which plays a role in preliminarily positioning the vertically placed battery pack, thereby realizing the role of preliminarily positioning multiple battery packs and improving the positioning efficiency of the battery pack; then, through the rotating motor 11, the screw rod 10, the pressing part 9 and the side pressing plate 8, start the rotating motor 11, the driving end of the rotating motor 11 rotates, drives the screw rod 10 to rotate, thereby pushing the side pressing plate 8 and the pressing part 9 together to translate along the battery width direction towards the side close to the positioning seat 1, the side pressing plate 8 pushes the negative terminal of the horizontally placed battery pack to be extruded with the groove wall of the positioning groove 4, until the negative current collector, the battery shell and the cover plate of the horizontally placed battery pack are pressed tightly; the pressing part 9 drives the vertically placed battery to be extruded with the groove wall of the limiting through groove 5, until the negative current collector, the battery shell and the cover plate of the vertically placed battery are pressed tightly, realizing the role of simultaneously and automatically positioning and pressing the horizontally placed battery and the vertically placed battery twice, further improving the positioning and pressing efficiency and ensuring the good positioning and pressing effect;

[0028] Then, through the driving assembly 7, the double-crank rocker assembly 2 and the upper pressing plate 6, start the driving assembly 7, the driving end of the driving assembly 7 drives the double-crank rocker assembly 2 and the upper pressing plate 6 together to rotate towards the slot direction of the positioning seat 1, until the upper pressing plate 6 rotates to be pressed on the battery shell of the negative terminal of the horizontally placed battery pack and the battery shell of the negative terminal of the vertically placed battery pack, at this time, the gap a of the horizontally placed battery pack and the gap b of the vertically placed battery pack are both located between the upper pressing plate 6 and one side of the positioning seat 1, which plays a role in positioning and pressing the negative terminal of the horizontally placed battery pack and the vertically placed battery pack; realizing the role of positioning and pressing the horizontally placed battery pack and the vertically placed battery pack three times;

[0029] After the welding of the side gap a of the horizontally placed battery pack and the side gap b of the vertically placed battery pack is completed, the driving assembly 7 drives the upper pressing plate 6, and the rotating mechanism drives the side pressing plate 8 to reset. Since the driving assembly 7 drives the double-crank rocker assembly 2 and the upper pressing plate 6 to rotate and reset, the thickness of the gap a or the gap b after welding does not increase, the upper pressing plate 6 cannot reset, the efficiency of taking and placing the battery pack is further improved, the battery pack is taken out, the battery pack is placed in the limiting groove 5 after being turned over, the lifting driving part 12 is started, the battery pack in the positioning seat 1 is pushed out, the welded battery pack is taken out, the battery pack is placed on the lifting driving part 12 after being turned over, the lifting driving part 12 drives the battery pack after being turned over to descend into the positioning groove 4, the efficiency of taking and placing the battery pack is improved, and the overall positioning and pressing efficiency is further improved. Finally, after two weldings, the positions of the two batteries are exchanged, and the above-mentioned feeding, positioning, pressing and taking steps are repeated until the four sides of the two batteries are welded, which realizes the automatic feeding, positioning, pressing and taking of the four sides of more than one battery and its negative electrode.

[0030] Further, the double-crank rocker assembly 2 includes a connecting rod 14 and two cranks 13, the upper ends of the two cranks 13 are respectively hinged to the two sides of the connecting rod 14, the lower ends of the cranks 13 are hinged to the bottom of one side of the positioning seat 1, and the upper pressing plate 6 is installed on one side of the connecting rod 14.

[0031] From the above description, through the connecting rod 14 and the double-crank 13, the driving end of the driving assembly 7 drives the connecting rod 14 and the crank 13 to rotate and move towards the slot opening of the positioning seat 1, drives the upper pressing plate 6 to rotate and press on the battery shell of the negative electrode end of the horizontally placed battery pack and the vertically placed battery pack, and plays a role in positioning and pressing the negative electrode end of the horizontally placed battery pack and the vertically placed battery pack.

[0032] Further, the double-crank rocker assembly 2 is provided with two groups, the two connecting rods 14 are connected by an intermediate connecting plate 15, a reinforcing inclined plate 16 is connected between one side of the intermediate connecting plate 15 and the connecting rod 14, and the driving end of the driving assembly 7 is hinged to the other side of the intermediate connecting plate 15.

[0033] From the above description, by arranging two groups of double-crank rocker assemblies 2 through the intermediate connecting plate 15, the shaking of the upper pressing plate 6 during the rotating movement towards the slot opening of the positioning seat 1 is avoided, the stability of the movement of the upper pressing plate 6 is further ensured, and the stability of the connection between the intermediate connecting plate 15 and the connecting rod 14 is enhanced through the reinforcing inclined plate 16.

[0034] Further, the driving assembly 7 comprises a support 17, a rotating shaft 18, a telescopic cylinder 19, and a T-shaped connecting block 20, the telescopic cylinder 19 is hinged to the support 17 through the rotating shaft 18, the top rod of the telescopic cylinder 19 is hinged to the vertical end of the connecting block 20, and the horizontal end of the connecting block 20 is detachably fixedly connected to the other side of the upper end of the double-crank rocker assembly 2.

[0035] From the above description, when it is necessary to drive the upper pressing plate 6 to press the vertically or horizontally placed battery pack, first, through the support 17, the rotating shaft 18, the telescopic cylinder 19, and the T-shaped connecting block 20, since the telescopic cylinder 19 is hinged to the support 17, and the top rod of the telescopic cylinder 19 is hinged to the vertical end of the connecting block 20, the top rod of the telescopic cylinder 19 is elongated, driving the double-crank rocker assembly 2 and the upper pressing plate 6 to rotate together towards the direction of the notch of the positioning seat 1, until the upper pressing plate 6 is pressed on the battery case of the negative end of the horizontally placed battery pack and the battery case of the negative end of the vertically placed battery pack, realizing the function of automatically driving the upper pressing plate 6 to press the negative end of the horizontally placed battery pack and the negative end of the vertically placed battery pack.

[0036] Further, the pressing member 9 comprises a connecting rod 21, a side pressing block 22 for pressing the upper side of the positive end of the vertically placed battery pack, and a T-shaped push rod 23, the horizontal end of the push rod 23 is connected to one side of the side pressing plate 8 through the connecting rod 21, the other side of the positioning seat 1 is provided with a limiting channel 24 for the connecting rod 21 to pass through and move, the horizontal end of the push rod 23 is connected to one end of the side pressing block 22 through a first compression spring 25, the first compression spring 25 is sleeved on the outer peripheral surface of the vertical end of the push rod 23, one end of the side pressing block 22 is connected to a first iron block 26, and the vertical end of the push rod 23 is connected to a first electromagnet 27 which is magnetically connected to the first iron block 26.

[0037] From the above description, after the horizontally placed battery pack and the vertically placed battery pack are respectively placed in the positioning groove 4 and the limiting groove 5, first, through the first electromagnet 27, the first iron block 26, the connecting rod 21, the side pressing block 22, the push rod 23, and the first compression spring 25, the first electromagnet 27 is powered off, the vertical end of the push rod 23 is separated from the side pressing block 22, and under the elastic force of the first compression spring 25, the side pressing block 22 is pushed to press on the upper side of the positive end of the vertically placed battery pack, realizing the function of automatically preliminarily positioning and pressing the upper side of the positive end of the vertically placed battery pack; then, the rotating motor 11 drives the screw rod 10 to rotate, driving the side pressing plate 8 and the connecting rod 21 to translate together along the battery width direction towards the side close to the positioning seat 1, since the horizontal end of the push rod 23 is connected to one side of the side pressing plate 8 through the connecting rod 21, further driving the push rod 23 to push the first compression spring 25 and the side pressing plate 8 to continue moving towards the upper side of the positive end of the vertically placed battery pack, realizing the function of automatically secondarily positioning and pressing the upper side of the positive end of the vertically placed battery pack.

[0038] Further, the lifting drive 12 comprises a push plate 28 and a lifting cylinder 29, the top rod of the lifting cylinder 29 is connected with the push plate 28, and the bottom end of the positioning groove 4 is provided with a limiting hole 30 for the push plate 28 to pass through.

[0039] From the above description, when it is necessary to turn over or take out the horizontally placed battery pack, the push plate 28, the limiting hole 30 and the lifting cylinder 29 are used, the lifting cylinder 29 is started, the top rod of the lifting cylinder 29 is elongated, the push plate 28 passes through the limiting hole 30, and the battery pack in the positioning groove 4 is lifted to a preset height, so that the horizontally placed battery pack is automatically lifted to above the positioning groove 4; similarly, when it is necessary to place the horizontally placed battery in the positioning groove 4, the top rod of the lifting cylinder 29 is reset, the battery pack on the push plate 28 is lowered into the positioning groove 4, so that the efficiency of taking and placing the battery pack is improved, and the overall positioning and pressing efficiency is further improved.

[0040] Further, the positioning block 3 is provided with a support seat 32 and a middle pressing block 31 for pressing the middle of the positive electrode end of the vertically placed battery pack, and the middle pressing block 31 is located between the support seat 32 and the positioning block 3; the middle pressing block 31 is connected with a guide rod 33 at one end, the support seat 32 is provided with a through hole 34 at the upper end for the one end of the guide rod 33 to pass through, the one end of the guide rod 33 is provided with a stop block 42, the upper end of the support seat 32 is connected with a baffle 35 at one side, the baffle 35 is connected with a second compression spring 36 at one end between the middle pressing block 31, the upper end of the support seat 32 is provided with a first limiting groove 37 for transversely placing the middle pressing block 31, the middle pressing block 31 is provided with a second iron block 38 at one end, and the groove bottom of the first limiting groove 37 is provided with a second electromagnet 39 magnetically connected with the second iron block 38.

[0041] From the above description, when the pressing member 9 automatically presses the upper sides of the two electrode ends of the vertically placed battery pack, the second electromagnet 39 is powered off through the support seat 32, the middle pressing block 31, the guide rod 33, the baffle 35, the second iron block 38 and the second compression spring 36, the middle pressing block 31 is separated from the groove bottom of the first limiting groove 37, and under the elastic force of the second compression spring 36, the middle pressing block 31 is pushed to the other end of the middle pressing block 31 and pressed on the middle position of the positive electrode end of the vertically placed battery pack, so that the middle position of the positive electrode end of the vertically placed battery pack is automatically positioned and pressed, and the positive and negative electrode ends of the vertically placed battery are further automatically positioned and pressed.

[0042] Further, the bottom end of the upper pressing plate 6 is provided with a flexible soft pad.

[0043] From the above description, when the upper pressing plate 6 is rotated and pressed on the negative electrode end of the vertically placed battery pack or the negative electrode end of the horizontally placed battery pack, the flexible soft pad is used to avoid direct collision between the upper pressing plate 6 and the negative electrode end of the vertically placed battery pack or the negative electrode end of the horizontally placed battery pack, so as to prevent the vertically placed battery pack or the horizontally placed battery pack from being damaged, and the vertically placed battery pack or the horizontally placed battery pack is protected.

[0044] Further: the other two sides of the positioning seat 1 are provided with a concave groove 40 for facilitating the taking and placing of the battery pack.

[0045] From the above description, through the concave groove 40 provided on the other two sides of the positioning seat 1, the function of facilitating the quick taking and placing of the horizontally placed battery pack and the vertically placed battery pack by the mechanical gripper or the hand is achieved, and the overall positioning efficiency and welding efficiency are further improved.

[0046] Further: the side pressing plate 8 is provided with a second limiting groove 41 for limiting the position of the positive terminal of the battery pack.

[0047] From the above description, through the second limiting groove 41, the positive terminal of the horizontally placed battery pack is accommodated, which avoids the collision between the side pressing plate 8 and the positive terminal of the battery pack, thereby affecting the service life of the battery pack. At the same time, the shaking of the positive terminal of the battery pack is prevented, thereby affecting the positioning accuracy of the horizontally placed battery pack. The positive terminal of the battery pack is protected, and the positioning and pressing efficiency and effect of the horizontally placed battery pack are further ensured.

[0048] Referring to Figures 2 to 6 , the embodiments provided by the present application are:

[0049] An automatic positioning device for welding a battery pack cover plate, as shown in Figure 2 and Figure 3 , comprising a double-crank rocker assembly 2, a positioning seat 1 and a positioning block 3 arranged side by side, and the lower end of the double-crank rocker assembly 2 is hinged to the bottom of one side of the positioning seat 1.

[0050] As shown in Figure 3 and Figure 4 , the upper end of the positioning seat 1 is provided with a positioning groove 4 for horizontally placing a battery pack, and the side of the positioning groove 4 away from the upper pressing plate 6 is provided with a side pressing plate 8 for pressing the positive terminal of the horizontally placed battery pack. The side pressing plate 8 is connected with a pressing member 9 for pressing the positive terminal of the vertically placed battery pack. The side pressing plate 8 is provided with a second limiting groove 41 for limiting the position of the positive terminal of the battery pack. The other side of the positioning seat 1 is threadedly connected with a screw rod 10, one end of the screw rod 10 is rotatably connected with the side pressing plate 8, the other end of the screw rod 10 is connected with a rotary motor 11 for driving the rotation of the screw rod 10, and the lower end of the positioning seat 1 is provided with a lifting driving member 12 for taking and placing the battery pack. The other two sides of the positioning seat 1 are provided with a concave groove 40 for facilitating the taking and placing of the battery pack.

[0051] As shown in Figure 3 and Figure 4As shown, the upper end of the double-crank rocker assembly 2 is connected with an upper pressing plate 6 for pressing the negative terminals of the horizontally and vertically placed battery packs, and the bottom end of the upper pressing plate 6 is provided with a soft elastic pad; the other side of the upper end of the double-crank rocker assembly 2 is hingedly connected with a driving assembly 7 for driving the upper pressing plate 6 to rotate towards the slot opening of the positioning groove 4; the double-crank rocker assembly 2 comprises a connecting rod 14 and two cranks 13, the upper ends of the two cranks 13 are respectively hingedly connected with the two sides of the connecting rod 14, the lower ends of the cranks 13 are hingedly connected with the bottom of one side of the positioning seat 1, and the upper pressing plate 6 is installed on one side of the connecting rod 14; the double-crank rocker assembly 2 is provided with two groups, and the two connecting rods 14 are connected with an intermediate connecting plate 15, the intermediate connecting plate 15 is connected with the connecting rod 14 on one side through a reinforcing inclined plate 16, and the driving end of the driving assembly 7 is hingedly connected with the other side of the intermediate connecting plate 15.

[0052] As shown in Figure 2 and Figure 4 , the driving assembly 7 comprises a support 17, a rotating shaft 18, a telescopic cylinder 19, and a T-shaped connecting block 20, the telescopic cylinder 19 is hingedly connected with the support 17 through the rotating shaft 18, the top rod of the telescopic cylinder 19 is hingedly connected with the vertical end of the connecting block 20, and the horizontal end of the connecting block 20 is detachably fixedly connected with the other side of the upper end of the double-crank rocker assembly 2.

[0053] As shown in Figure 3 and Figure 6 , the pressing member 9 comprises a connecting rod 21, a side pressing block 22 for pressing the upper side of the positive terminal of the vertically placed battery pack, and a T-shaped push rod 23, the horizontal end of the push rod 23 is connected with one side of the side pressing plate 8 through the connecting rod 21, the other side of the positioning seat 1 is provided with a limiting channel 24 for the connecting rod 21 to pass through and move, the horizontal end of the push rod 23 is connected with one end of the side pressing block 22 through a first compression spring 25, the first compression spring 25 is sleeved on the outer peripheral surface of the vertical end of the push rod 23, one end of the side pressing block 22 is connected with a first iron block 26, and the vertical end of the push rod 23 is connected with a first electromagnet 27 magnetically connected with the first iron block 26.

[0054] As shown in Figure 3 and Figure 4 , the lifting driving member 12 comprises a push plate 28 and a lifting cylinder 29, the top rod of the lifting cylinder 29 is connected with the push plate 28, and the bottom end of the positioning groove 4 is provided with a limiting hole 30 for the push plate 28 to pass through.

[0055] As shown in Figure 3 and Figure 5As shown, the positioning block 3 is provided with a limiting through groove 5 for vertically placing the battery pack, a support seat 32 is arranged on one side of the positioning block 3, and a middle pressing block 31 for pressing the middle of the positive electrode end of the vertically placed battery pack is arranged between the support seat 32 and the positioning block 3; the middle pressing block 31 is connected with a guide rod 33 at one end, the support seat 32 is provided with a through hole 34 at the upper end for the guide rod 33 to pass through, the guide rod 33 is provided with a stop block 42 at one end, the upper end of the support seat 32 is connected with a baffle 35 at one side, the baffle 35 is connected with the middle pressing block 31 at one end through a second compression spring 36, the upper end of the support seat 32 is provided with a first limiting groove 37 at the other side for horizontally placing the middle pressing block 31, the middle pressing block 31 is provided with a second iron block 38 at one end, and the groove bottom of the first limiting groove 37 is provided with a second electromagnet 39 magnetically connected with the second iron block 38.

[0056] Compared with the prior art, the present application has the advantages of high positioning and pressing efficiency, good positioning and pressing effect, and high battery pack taking and placing efficiency; through the positioning seat 1, the positioning groove 4, the positioning block 3 and the limiting through groove 5, the horizontally placed battery pack and the vertically placed battery pack are preliminarily positioned; through the rotating motor 11, the screw rod 10, the pressing part 9 and the side pressing plate 8, the two electrode ends of the horizontally placed battery pack and the two electrode ends of the vertically placed battery pack are automatically pressed; the horizontally placed battery pack and the vertically placed battery pack are automatically positioned and pressed for the second time; through the driving assembly 7, the double-crank rocker assembly 2 and the upper pressing plate 6, when pressing, the upper pressing plate 6 rotates and presses towards the slot opening direction of the positioning seat 1 to the battery shell of the negative electrode end of the horizontally placed battery pack and the vertically placed battery pack, so that the horizontally placed battery pack and the vertically placed battery pack are positioned and pressed for the third time; when taking the material, the driving assembly 7 drives the double-crank rocker assembly 2 and the upper pressing plate 6 to rotate and reset, so that the upper pressing plate 6 cannot reset due to the increase in the thickness of the gap a or the gap b after welding, and the battery pack taking and placing efficiency is further improved; through the lifting driving part 12, the battery pack is fed and taken, and the battery pack taking and placing efficiency is improved; after the two battery packs are welded twice, the positions of the two battery packs are exchanged, and the feeding, positioning, pressing and taking steps are repeated until the four sides of the two battery packs are welded.

[0057] The above description is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. An automatic positioning device for welding battery pack cover plates, characterized in that: The device includes a double-crank rocker assembly, a positioning seat, and a positioning block arranged side by side. The lower end of the double-crank rocker assembly is hinged to the bottom of one side of the positioning seat. The upper end of the positioning seat has a positioning groove for horizontally placing the battery pack, and the positioning block has a limiting through groove for vertically placing the battery pack. One side of the upper end of the double-crank rocker assembly is connected to an upper pressure plate for pressing the horizontally placed battery pack and the negative end of the vertically placed battery pack. The other side of the upper end of the double-crank rocker assembly is hinged to a drive assembly that drives the upper pressure plate to rotate toward the opening of the positioning groove. The side of the positioning groove away from the upper pressure plate is provided with a side pressure plate for pressing the positive end of the horizontally placed battery pack. One side of the side pressure plate is connected to a clamping member for pressing the positive end of the vertically placed battery pack. The other side of the positioning seat is threaded with a screw. One end of the screw is rotatably connected to the side pressure plate, and the other end of the screw is connected to a rotary motor that drives the screw to rotate. The lower end of the positioning seat is equipped with a lifting drive for picking up and placing the battery pack. The clamping component includes a connecting rod, a side pressure block for clamping the upper side of the positive end of the vertically placed battery pack, and a push rod arranged in a T-shape. One side of the horizontal end of the push rod is connected to one side of the side pressure plate through the connecting rod. The other side of the positioning seat has a limiting channel for the connecting rod to pass through and move. A first compression spring is connected between the horizontal end of the push rod and one end of the side pressure block. The first compression spring is sleeved on the outer circumference of the vertical end of the push rod. One end of the side pressure block is connected to a first iron block. The vertical end of the push rod is connected to a first electromagnet that is magnetically connected to the first iron block.

2. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The double-crank rocker assembly includes a connecting rod and two cranks. The upper ends of the two cranks are respectively hinged to the two sides of the connecting rod, and the lower ends of the cranks are hinged to the bottom of one side of the positioning seat. The upper pressure plate is installed on one side of the connecting rod.

3. The automatic positioning device for welding battery pack cover plates according to claim 2, characterized in that: The double crank rocker assembly is provided in two sets, with an intermediate connecting plate connecting the two connecting rods. A reinforcing inclined plate is connected between one side of the intermediate connecting plate and the connecting rod, and the driving end of the drive assembly is hinged to the other side of the intermediate connecting plate.

4. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The drive assembly includes a support, a rotating shaft, a telescopic cylinder, and a T-shaped connecting block. The telescopic cylinder is hinged to the support via the rotating shaft. The top rod of the telescopic cylinder is hinged to the vertical end of the connecting block. The horizontal end of the connecting block is detachably and fixedly connected to the other side of the upper end of the double crank rocker assembly.

5. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The lifting drive component includes a push plate and a lifting cylinder. The top rod of the lifting cylinder is connected to the push plate, and a limiting hole is provided at the bottom of the positioning groove for the push plate to pass through.

6. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The positioning block is provided with a support base and an intermediate pressing block for pressing the middle of the positive terminal of the vertically placed battery pack on one side. The intermediate pressing block is located between the support base and the positioning block. One end of the intermediate pressing block is connected to a guide rod. The upper end of the support base has a through hole for one end of the guide rod to pass through. One end of the guide rod is provided with a stop block. One side of the upper end of the support base is connected to a baffle. A second compression spring is connected between the baffle and one end of the intermediate pressing block. The other side of the upper end of the support base has a first limiting groove for the intermediate pressing block to be placed horizontally. One end of the intermediate pressing block is provided with a second iron block. A second electromagnet that is magnetically connected to the second iron block is provided at the bottom of the first limiting groove.

7. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: An elastic pad is provided at the bottom of the upper pressure plate.

8. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The other two sides of the positioning seat are provided with clearance grooves to facilitate the placement and removal of the battery pack.

9. The automatic positioning device for welding battery pack cover plates according to claim 1, characterized in that: The side pressure plate has a second limiting groove for defining the position of the positive terminal of the battery pack.

Images