A shaping device for a soft-pack power battery tab

Abstract

The present invention discloses a shaping device for a pole ear of a soft-pack power battery, comprising a structural frame, an electric cylinder leveling mechanism, a profiling base plate and a jig box; a profiling base plate is provided on the top front side of the structural frame; a hollow jig box is provided on the top of the profiling base plate; a soft-pack power battery module is placed in the jig box; an electric cylinder leveling mechanism is provided on the top rear side of the structural frame; the electric cylinder leveling mechanism is used to shape the pole ear on the top of the soft-pack power battery module. The shaping device for the pole ear of a soft-pack power battery disclosed in the present invention has a scientific design and can perform constant pressure shaping on the pole ear of a soft-pack power battery under the drive of an electric cylinder, thereby greatly improving the shaping efficiency of the pole ear of the power battery module, so that the pole ear shaping has good flatness and high precision, and effectively solves the problem of low shaping efficiency of the pole ear of the power battery module.

Description

Technical Field

[0001] The invention relates to the technical field of shaping a tab of a soft-pack power battery, and in particular to a shaping device for a tab of a soft-pack power battery. Background Art

[0002] For soft-pack power batteries, the laser welding operation on their tabs has important applications in the field of power battery welding.

[0003] At present, the sizes and arrangements of different soft-pack power battery modules produced by battery manufacturers are often different, so battery manufacturers often encounter low efficiency of tab shaping and poor quality of laser welding of soft-pack power batteries. Among them, the flatness of the tab shaping plays a key role in the laser welding operation of the tab, and is directly related to the quality of the laser welding of the tab. Therefore, it tests the company's ability to shape the tabs of soft-pack power batteries.

[0004] There are many types of tabs for soft-pack power batteries, among which the tab shaping factor plays a key role in the tab laser welding. In the existing technology, when shaping the positive and negative tabs of the battery, since the tabs themselves are made of aluminum and copper sheets and are thin, wrinkles are easily formed, which seriously affects the shaping quality of the tabs, and further affects the welding quality of the tabs on the battery module and the overall production quality of the battery module.

[0005] At present, for soft-pack power batteries, each battery has two protruding tabs, which are respectively a thin aluminum sheet and a thin copper sheet. According to the series and parallel arrangement designed by research and development, the two tabs on the same side of two adjacent batteries (one tab is provided for each battery) need to be folded in half and overlapped together, and fit to the top of the corresponding jumper sampling nickel strip on the circuit adapter board (the jumper nickel strip is located between the two tabs). Only when the three are completely fitted together can the laser welding effect be significant. However, since the tabs themselves are made of aluminum and copper sheets with a relatively thin thickness, the tabs are prone to collision and wrinkles during battery transportation and assembly into modules. When the two tabs and the top of the jumper sampling nickel sheet overlap and fit, a gap will be formed. During laser welding, the gap will be directly pierced through, seriously affecting the welding effect.

[0006] The meaning of tab shaping is to press the two tabs and the corresponding jumper sampling nickel strips on the circuit adapter board to shape and smooth the three.

[0007] However, there is currently no shaping device that can compress the two tabs and the corresponding cross-sampling nickel strips on the circuit adapter board to shape and smooth the three. Summary of the invention

[0008] The purpose of the present invention is to provide a shaping device for a soft-pack power battery tab in view of the technical defects in the prior art.

[0009] To this end, the present invention provides a shaping device for a soft-pack power battery tab, comprising a structural frame, an electric cylinder leveling mechanism, a contoured base plate and a jig box;

[0010] A contoured base plate is provided on the top front side of the structural frame;

[0011] A hollow jig box is provided on the top of the contoured base plate;

[0012] Inside the jig box, a soft-pack power battery module is placed;

[0013] An electric cylinder leveling mechanism is provided on the top rear side of the structural frame;

[0014] The electric cylinder leveling mechanism is used to shape the tabs on the top of the soft-pack power battery module.

[0015] Preferably, the soft-pack power battery module comprises a plurality of soft-pack power batteries arranged in parallel longitudinally;

[0016] Each soft-pack power battery has a terminal ear on the front and back sides of the top respectively;

[0017] The tabs on the top of multiple soft-pack power batteries are connected to the circuit adapter board;

[0018] The circuit adapter plate is provided with a longitudinally distributed notch for allowing the tab to pass vertically at a position corresponding to each tab on the top of each soft-pack power battery;

[0019] A longitudinally distributed sampling nickel strip is provided on the top of the circuit adapter board at a position between any two adjacent notches;

[0020] A pole ear passes vertically through each notch.

[0021] Preferably, the jig box comprises a contoured box body and a positioning support plate;

[0022] The contoured box body has a battery module accommodating groove with a front opening;

[0023] The battery module receiving groove is used to place the soft-pack power battery module;

[0024] A positioning support plate is provided on the top of the contoured box body;

[0025] A positioning support plate, comprising a plurality of racks arranged at equal intervals in the transverse direction and distributed in the longitudinal direction, and a first positioning support block and two second positioning support blocks;

[0026] A first positioning support block is arranged on the top front side of the contoured box body;

[0027] Two second positioning support blocks are respectively arranged on the left and right sides of the top of the contoured box body;

[0028] Two second positioning support blocks, which are symmetrically distributed on the left and right;

[0029] The front and rear ends of the rack are respectively connected to the rear side of the first positioning support block and the top rear side of the contoured box body;

[0030] A plurality of racks, located between the two second positioning support blocks;

[0031] Each rack is respectively arranged corresponding to the tab gap between two adjacent soft-pack power batteries;

[0032] When the soft-pack power battery module is placed in the battery module accommodating groove, a rack is inserted into the gap between the tabs of every two soft-pack power batteries, and the circuit adapter board is located in the space surrounded by the first positioning support block and the two second positioning support blocks;

[0033] The gap between the tabs of every two soft-pack power batteries corresponds to the shape and size of a rack.

[0034] Preferably, the structural frame comprises a structural frame base plate, a cylinder positioning assembly, a first linear slide rail and a second linear slide rail;

[0035] The structural frame bottom plate is horizontally distributed;

[0036] Two second linear guide rails distributed longitudinally are arranged on the top front side and the middle part of the bottom plate of the structural frame;

[0037] Two second linear guide rails, which are symmetrically distributed on the left and right sides;

[0038] Each second linear slide rail includes a second guide rail and two second sliders distributed longitudinally;

[0039] The second sliding block is slidably connected to the top of the second guide rail;

[0040] A contoured base plate is provided on the second slide blocks of the two second linear slide rails;

[0041] Two first linear guide rails are longitudinally arranged on the top rear side of the structural frame bottom plate;

[0042] Each first linear slide rail includes a first guide rail and two first sliders distributed longitudinally;

[0043] The first sliding block is slidably connected to the top of the first guide rail;

[0044] Two first linear guide rails, which are symmetrically distributed on the left and right sides;

[0045] Two first linear slide rails are located outside the rear ends of the two second linear slide rails;

[0046] An electric cylinder leveling mechanism is provided on the first slide blocks of the two first linear slide rails;

[0047] A cylinder positioning assembly is respectively arranged on the left and right sides of the front ends of the two second linear slide rails;

[0048] Two cylinder positioning components, which are symmetrically distributed on the left and right;

[0049] Each cylinder positioning assembly includes a positioning cylinder and a positioning block;

[0050] The output ends of the two positioning cylinders on opposite sides are respectively connected to a positioning block;

[0051] Two cylinder positioning assemblies, used for clamping and fixing the contoured base plate located therebetween;

[0052] A laterally distributed limit block is provided at the rear end of the gap between the two second linear slide rails;

[0053] The limiting block is used to prevent the contoured base plate from continuing to move backward when contacting the contoured base plate.

[0054] Preferably, the contoured base plate comprises a contoured base bottom plate, a groove positioning plate, a clamping cylinder, a reversing cylinder and a third linear guide rail assembly;

[0055] A third linear guide rail assembly is arranged in a transversely distributed manner in the middle of the bottom plate of the contoured base;

[0056] A third linear guide rail assembly, comprising a third guide rail (specifically a linear guide rail) and two third sliders distributed laterally;

[0057] The third sliding block is slidably connected with the top of the third guide rail;

[0058] The two third slide blocks are provided with horizontally distributed groove positioning plates to facilitate subsequent lateral movement;

[0059] A fixture box positioning groove is provided on the top of the groove positioning plate;

[0060] The jig box is arranged in the jig box positioning groove;

[0061] A clamping cylinder is provided on the left and right sides of the groove positioning plate respectively;

[0062] Two clamping cylinders, which are symmetrically distributed on the left and right;

[0063] The output ends of the two clamping cylinders on opposite sides are respectively connected to a clamping block;

[0064] Two clamping cylinders are used to clamp and fix the fixture box located between them.

[0065] Preferably, a handle is provided at the front end of the bottom plate of the contoured base;

[0066] A transversely distributed reversing cylinder is provided at the front end of the bottom plate of the contoured base;

[0067] The output end on the left side of the reversing cylinder is connected to the front side of the groove positioning plate through a reversing cylinder connecting block;

[0068] A longitudinally distributed reversing limit block is also arranged on the left and right sides of the front end of the bottom plate of the contoured base.

[0069] Preferably, the electric cylinder leveling mechanism comprises a frame, an electric cylinder transmission mechanism and an electric cylinder shaping module;

[0070] The bottoms of the left and right ends of the frame are respectively fixedly connected to the first sliders of the two first linear slide rails in the structural frame;

[0071] The electric cylinder shaping module is arranged in the horizontal middle position of the top plate of the frame;

[0072] The electric cylinder shaping module is used to shape the tabs on the top of the soft-pack power battery module located directly below it;

[0073] The electric cylinder transmission mechanism comprises a first electric cylinder and a transmission rod distributed longitudinally;

[0074] The output end of the first electric cylinder is connected to the rear end of the transmission rod through a coupling;

[0075] The front end of the transmission rod is connected to the middle position of the bottom rear side of the frame.

[0076] Preferably, the electric cylinder shaping module comprises a second electric cylinder, a floating joint, a connecting plate, a lug assembly, an optical shaft and a bearing sleeve;

[0077] The output end of the lower part of the second electric cylinder passes through the through hole reserved on the top plate of the frame, and is connected to the middle position of the upper side of the laterally distributed connecting plate through a floating joint;

[0078] Two rows of longitudinally spaced pole lug assemblies are provided in the transverse middle of the lower side of the connecting plate;

[0079] Two rows of longitudinally spaced lug assemblies, symmetrically distributed front to back;

[0080] Each row of wiper ear assemblies includes a plurality of wiper ear assemblies that are distributed at equal intervals in the transverse direction;

[0081] Each tab wiping assembly is used to press down and shape a tab on the top of a soft-pack power battery;

[0082] A bearing sleeve is vertically arranged on the top plate of the frame, on the left and right sides of the second electric cylinder respectively;

[0083] An optical axis is vertically arranged in each bearing sleeve;

[0084] The lower end of each optical axis is fixedly connected to the left and right ends of the top of the connecting plate.

[0085] Preferably, each wiper lug assembly comprises a wheel frame, a ceramic shaping roller and two studs;

[0086] A ceramic roller is pivotally connected to the bottom middle of the wheel frame;

[0087] The front and rear ends of the wheel frame are connected to the bottom of the connecting plate through a stud respectively;

[0088] The ceramic shaping roller is used to press the two pole ears that have been folded and overlapped on the top of the sampling nickel strip, and to shape and smooth the sampling nickel strip and the two pole ears.

[0089] Preferably, stud through holes are reserved at the front and rear ends of the top of the wheel frame;

[0090] The connecting column at the lower end of each stud is connected to a stud stopper block after vertically penetrating a stud through hole;

[0091] The size of the stud stopper is larger than the size of the stud through hole;

[0092] The connection column and the stud through hole are clearance fit;

[0093] The upper outer wall of each stud is surrounded by a spring limit block;

[0094] A spring is respectively sleeved on the outer wall of each stud at a position between the spring limit block and the top of the wheel frame.

[0095] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides a shaping device for the pole ear of a soft-pack power battery, which is scientifically designed and can perform constant pressure shaping action on the pole ear of the soft-pack power battery under the drive of the electric cylinder, and the two pole ears of the sampling nickel sheet on the circuit adapter plate and the top thereof are folded and overlapped to smoothen the shape, and the state where the pole ears are flat, tightly fitted, and the gap is reduced and disappears from the initial state of large gaps in the pole ears is transformed into a state where the pole ears are flat, tightly fitted, and the gap is reduced and disappears, thereby achieving the best preparation state for laser welding. The present invention combines the unique adjustable constant thrust, constant speed and constant stroke of the electric cylinder, so that the shaping efficiency of the pole ears of the power battery module can be greatly improved, so that the flatness and precision of the pole ears are good, and the problem of low shaping efficiency of the pole ears of the power battery module is effectively solved, and the laser welding effect of the subsequent battery pole ears is guaranteed to the maximum extent, which has great practical significance.

[0096] The application of the present invention helps to greatly improve the shaping efficiency and welding quality of the tabs of soft-pack power batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 A schematic diagram of the main structure of a shaping device for a soft-pack power battery tab provided by the present invention;

[0098] Figure 2 A schematic diagram of the main structure of the structural skeleton in a shaping device for a soft-pack power battery tab provided by the present invention;

[0099] Figure 3 A schematic diagram of the main structure of the electric cylinder leveling mechanism in a shaping device for a soft-pack power battery tab provided by the present invention;

[0100] Figure 4 A schematic diagram of the main structure of a control panel in a shaping device for a soft-pack power battery tab provided by the present invention;

[0101] Figure 5 A schematic structural diagram of a contoured base plate in a shaping device for a soft-pack power battery tab provided by the present invention;

[0102] Figure 6 A schematic structural diagram of a jig box in a shaping device for a soft-pack power battery tab provided by the present invention;

[0103] Figure 7 A shaping device for a soft-pack power battery tab provided by the present invention, a schematic diagram of the structure of a soft-pack power battery module that needs to be shaped, and a state where two tabs have just extended from the notches on both sides of the sampling nickel strip (they have not been folded and overlapped at this time, and the electric cylinder shaping module performs the shaping operation only after the two tabs are folded and overlapped manually);

[0104] Figure 8 A schematic diagram of the front structure of an electric cylinder shaping module in a shaping device for a soft-pack power battery tab provided by the present invention;

[0105] Fig. 9 A schematic structural diagram of any one of the tab wiping components in the apparatus for shaping the tab of a soft-pack power battery provided by the present invention. DETAILED DESCRIPTION

[0106] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0107] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0108] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0109] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0110] See also Figures 1 to 9 The present invention provides a shaping device for a soft-pack power battery tab, comprising a structural frame 1, an electric cylinder leveling mechanism 2, a contoured base plate 4 and a jig box 5;

[0111] A contoured base plate 4 is provided on the top front side of the structural frame 1;

[0112] A hollow jig box 5 is provided on the top of the contoured base plate 4;

[0113] A soft-pack power battery module 6 is placed in the fixture box 5;

[0114] An electric cylinder leveling mechanism 2 is provided on the top rear side of the structural frame 1;

[0115] The electric cylinder leveling mechanism 2 is used to perform shaping operations on the tab 620 on the top of the soft-pack power battery module 6 .

[0116] In the present invention, for specific implementation, see Figure 7 , a soft-pack power battery module 6, comprising a plurality of soft-pack power batteries 62 arranged in parallel longitudinally;

[0117] Each soft-pack power battery 62 has a tab 620 (the two tabs specifically include a positive tab and a negative tab) on both sides of the top and the back.

[0118] The tabs 620 on the top of the multiple soft-pack power batteries 62 are connected to the circuit adapter board 61;

[0119] The circuit adapter board 61 is provided with a longitudinally distributed notch at a position corresponding to each pole ear 620 on the top of each soft-pack power battery 62 for allowing the pole ear to pass vertically;

[0120] A longitudinally distributed sampling nickel strip 610 is provided on the top of the circuit adapter board 61, between any two adjacent notches;

[0121] A pole ear 620 vertically passes through each notch.

[0122] It should be noted that see Figure 7 The soft-pack power battery module is composed of a circuit adapter board 61 and a soft-pack power battery 62, which are fastened together, wherein a plurality of soft-pack power batteries 62 are arranged in a linear array. Figure 7 There are ten soft-pack power batteries 62, so there are 20 groups of positive and negative tabs (i.e., 20 pairs of tabs, each pair of tabs includes a positive tab and a negative tab), which are alternately overlapped on the circuit adapter board 61. The 20 pairs of tabs correspond to 20 sampled nickel strips 610.

[0123] It should be noted that the circuit adapter board 61 is a voltage and temperature acquisition circuit board, on which there are 20 groups (1 in each group) of sampling nickel strips 610 (i.e., the corresponding cross-connected sampling nickel strips on the circuit adapter board) arranged linearly and evenly spaced in two rows (ten columns in each row), and each sampling nickel strip 610 has hollow openings (i.e., notches) at both ends for the tabs 620 to extend. Figure 7 The figure shows the state when the two pole ears 620 just extend from the notches on both sides of the sampling nickel strip 610 (at this time, they have not been folded and overlapped, that is, they have not been bent relative to each other). After the two pole ears 620 (positive pole ears or negative pole ears) on the top of the two adjacent soft-pack power batteries 62 extend from the hollow opening, they are folded in half manually (for example, using a shovel tool with a straight front end) and then overlapped on the top of the sampling nickel strip 610 (after the two pole ears 620 are folded and overlapped, they are located on the top of the horizontally distributed sampling nickel strip 610, and the bottom surface of the lower pole ear is in contact with the top surface of the sampling nickel strip 610). Then, the present invention uses a ceramic shaping roller to play the role of pressing and smoothing the metal sheet (i.e., the pole ear), that is, the wrinkled surface of the metal pole ear can be shaped into a flat surface. When the two pole ears and the sampling nickel strip overlap and fit together (i.e., the top surface of the uppermost pole ear) are pressed and stressed, and the two pole ears are shaped and smoothed through reciprocating motion, and then flattened with the sampling nickel strip, transforming from the initial state of large gaps in the pole ears to a state where the pole ears are flat, tightly fitted, and the gaps are reduced and disappear, thereby achieving the best preparation state for laser welding. After completing the welding action of the two pole ears and the sampling nickel strip below, the pole ears 620 and the sampling nickel strip 610 become a whole, and the voltage and temperature of each sampling nickel strip can be collected (i.e., the battery voltage and temperature are specifically collected through the sampling nickel strip).

[0124] In the present invention, for specific implementation, see Figure 6 , the fixture box 5 includes a contoured box body 51 and a positioning support plate 52;

[0125] The contoured box body 5 has a battery module accommodating groove 50 with a front opening;

[0126] The battery module accommodating groove 50 is used to accommodate the soft-pack power battery module 6;

[0127] A positioning support plate 52 is provided on the top of the contoured box body 5;

[0128] The positioning support plate 52 includes a plurality of racks 520 which are arranged at equal intervals in the transverse direction and distributed in the longitudinal direction, as well as a first positioning support block 521 and two second positioning support blocks 522;

[0129] A first positioning support block 521 is disposed on the top front side of the contoured box body 5;

[0130] Two second positioning support blocks 522 are respectively arranged on the left and right sides of the top of the contoured box body 5;

[0131] Two second positioning support blocks 522, which are symmetrically distributed on the left and right sides;

[0132] The front and rear ends of the rack 520 are connected to the rear side of the first positioning support block 521 and the top rear side of the contoured box body 5 respectively;

[0133] A plurality of racks 520, located between the two second positioning support blocks 522;

[0134] Each rack 520 is respectively arranged corresponding to the tab gaps of two adjacent soft-pack power batteries 62;

[0135] When the soft-pack power battery module 6 is placed in the battery module accommodating groove 50 , a rack 520 is inserted into the gap between the tabs of every two soft-pack power batteries 62 , and the circuit adapter board 61 is located in the space surrounded by the first positioning support block 521 and the two second positioning support blocks 522 .

[0136] It should be noted that the gap between the tabs of every two soft-pack power batteries 62 corresponds to (is consistent with) the shape and size of a rack 520 .

[0137] It should be noted that, for the present invention, in a specific implementation, the soft-pack power battery module 6 is placed in the jig box 5 and positioned, and the multiple racks on the positioning support plate 52 pass through the tab gaps of two adjacent soft-pack power batteries 62 in sequence, spacing the tabs apart in sequence, and the first positioning support block 521 and the second positioning support block 522 on the top of the positioning support plate 52 can play a role in positioning and supporting the circuit adapter board 61.

[0138] In the present invention, for specific implementation, see Figure 2 , a structural frame 1, comprising a structural frame base plate 11, a cylinder positioning assembly 12, a first linear slide rail 13 and a second linear slide rail 15;

[0139] The structural frame bottom plate 11 is horizontally distributed;

[0140] Two second linear guide rails 15 distributed longitudinally are provided on the top front side and the middle part of the structural frame bottom plate 11;

[0141] Two second linear guide rails 15, which are symmetrically distributed on the left and right sides;

[0142] Each second linear slide rail 15 includes a second guide rail 151 and two second sliders 152 distributed longitudinally;

[0143] The second sliding block 152 is slidably connected to the top of the second guide rail 151;

[0144] A contoured base plate 4 is provided on the second sliders 152 of the two second linear guide rails 15;

[0145] Two first linear guide rails 13 distributed longitudinally are provided on the top rear side of the structural frame bottom plate 11;

[0146] Each first linear slide rail 13 includes a first guide rail 131 and two first sliders 132 distributed longitudinally;

[0147] The first sliding block 132 is slidably connected to the top of the first guide rail 131;

[0148] Two first linear guide rails 13, which are symmetrically distributed on the left and right sides;

[0149] Two first linear guide rails 13 are located outside the rear ends of the two second linear guide rails 15;

[0150] An electric cylinder leveling mechanism 2 is provided on the first slide blocks 132 of the two first linear slide rails 13;

[0151] A cylinder positioning assembly 12 is provided on the left and right sides of the front ends of the two second linear slide rails 15 respectively;

[0152] Two cylinder positioning components 12, which are symmetrically distributed on the left and right;

[0153] Each cylinder positioning assembly 12 includes a positioning cylinder 121 and a positioning block 122;

[0154] The output ends (such as piston rods) on opposite sides of the two positioning cylinders 121 are respectively connected to a positioning block 122;

[0155] Two cylinder positioning assemblies 12 are used to clamp and fix the contoured base plate 4 located therebetween, specifically, to clamp the left and right sides of the front end of the contoured base plate 4;

[0156] In specific implementation, a laterally distributed limit block 14 is provided at the rear end of the gap between the two second linear guide rails 15;

[0157] The limiting block 14 is used to prevent the contoured base plate 4 from continuing to move backward when it contacts the contoured base plate 4.

[0158] It should be noted that, for the structural frame, the two cylinder positioning assemblies 12 are integrally mounted on the structural frame bottom plate 11; the first linear slide rail 13 is used to connect the electric cylinder leveling mechanism 2; the second linear slide rail 15 is used to connect the contour base plate 4. The limit block 14 is used to limit the working position of the contour base plate 4;

[0159] In the present invention, for specific implementation, see Figure 5 , the contoured base plate 4 includes a contoured base bottom plate 41, a groove positioning plate 42, a clamping cylinder 43, a reversing cylinder 44 and a third linear guide rail assembly 45;

[0160] A third linear guide rail assembly 45 is disposed in a transversely distributed manner in the middle of the contoured base bottom plate 41;

[0161] A third linear guide rail assembly 45, comprising a third guide rail (specifically a linear guide rail) and two third sliders distributed laterally;

[0162] It should be noted that the shape and structure of the third linear guide rail assembly 45 is the same as that of the first linear guide rail assembly, but the placement direction is different;

[0163] The third sliding block is slidably connected with the top of the third guide rail;

[0164] The two third slide blocks are provided with horizontally distributed groove positioning plates 42 to facilitate subsequent lateral movement;

[0165] A fixture box positioning groove 420 is provided on the top of the groove positioning plate 42;

[0166] The jig box 5 is arranged in the jig box positioning groove 420;

[0167] A clamping cylinder 43 is provided on the left and right sides of the groove positioning plate 42;

[0168] Two clamping cylinders 43, which are symmetrically distributed on the left and right;

[0169] The output ends (such as piston rods) on opposite sides of the two clamping cylinders 43 are respectively connected to a clamping block 430;

[0170] Two clamping cylinders 43, used for clamping and fixing the jig box 5 located therebetween;

[0171] In specific implementation, a handle 16 is provided at the front end of the contoured base bottom plate 41 to facilitate operation and movement by personnel;

[0172] In specific implementation, a limit docking notch 48 is provided at the middle position of the rear end of the contoured base bottom plate 41;

[0173] The limiting joint notch 48 is arranged corresponding to the limiting block 14 in the structural frame 1 .

[0174] In specific implementation, a transversely distributed reversing cylinder 44 is provided at the front end of the contoured base bottom plate 41;

[0175] The output end (such as the piston rod) on the left side of the reversing cylinder 44 is connected to the front side of the groove positioning plate 42 through a reversing cylinder connecting block 440.

[0176] It should be noted that the reversing cylinder 44 is used to laterally push the soft-pack power battery module 6 installed on the top of the groove positioning plate 42, so that the soft-pack power battery module 6 moves from the initial station (i.e., the first station) to the left to the subsequent station (i.e., the second station), and moves from the subsequent station (i.e., the second station) to the right and returns to the initial station (i.e., the first station), that is, the switching function between the first station and the second station can be realized.

[0177] In specific implementation, a longitudinally distributed reversing limit block 47 is respectively provided on the left and right sides of the front end of the contoured base bottom plate 41, which is used to limit the moving position of the contoured base bottom plate 41 where the soft-pack power battery module 6 is located, specifically the aforementioned first station and second station.

[0178] It should be noted that, in a specific implementation, the soft-pack power battery module 6 is placed in the jig box 5 and positioned, the jig box 5 is positioned as a whole in the groove positioning plate 42 on the contoured base plate 4, and the handle 46 is moved to place the contoured base plate 4 as a whole in the working position. At this time, the two clamping cylinders 43 will clamp the jig box 5 in the groove positioning plate 42. In addition, the positioning cylinder assemblies 12 on the left and right sides of the structural frame 1 will clamp the contoured base plate 4 in the working position.

[0179] In the present invention, for specific implementation, see Figure 3 , the electric cylinder leveling mechanism 2 includes a frame 21, an electric cylinder transmission mechanism 22 and an electric cylinder shaping module 23;

[0180] The bottoms of the left and right ends of the frame 21 are fixedly connected to the first sliders 132 of the two first linear guide rails 13 in the structural frame 1 respectively;

[0181] The electric cylinder shaping module 23 is arranged at the horizontal middle position of the top plate 210 of the frame 21;

[0182] The electric cylinder shaping module 23 is used to shape the tabs on the top of the soft-pack power battery module 6 located directly below it;

[0183] The electric cylinder transmission mechanism 22 includes a first electric cylinder 221 and a transmission rod 222 distributed longitudinally;

[0184] The output end (such as the piston rod) of the first electric cylinder 221 is connected to the rear end of the transmission rod 222 through a coupling;

[0185] The front end of the transmission rod 222 is connected to the middle position of the bottom rear side of the frame 21;

[0186] It should be noted that, for the electric cylinder transmission mechanism 22, the first electric cylinder 221 has functions such as adjustable constant thrust, constant speed and constant stroke, and the transmission rod 222 is fixedly connected to the frame 21, so that it can subsequently drive the frame 21 as a whole to perform stable linear reciprocating motion, that is, linear reciprocating motion in the front and rear directions.

[0187] For specific implementation, see Figure 8 The electric cylinder shaping module 23 includes a second electric cylinder 231, a floating joint 232, a connecting plate 233, a lug assembly 234, an optical axis 235 and a bearing sleeve 236;

[0188] The output end (e.g. piston rod) at the lower part of the second electric cylinder 231 passes through the through hole reserved on the top plate 210 of the frame 21, and is connected to the middle position of the upper side of the laterally distributed connecting plate 233 through the floating joint 232;

[0189] Two rows of longitudinally spaced pole lug assemblies are provided in the transverse middle of the lower side of the connecting plate 233;

[0190] Two rows of longitudinally spaced lug assemblies, symmetrically distributed front to back;

[0191] Each row of wiper ear assemblies includes a plurality of wiper ear assemblies 234 (eg, Figure 1 , Figure 8 five shown);

[0192] Each tab-wiping assembly 234 is used to press down and shape a tab on the top of a soft-pack power battery 62;

[0193] The top plate 210 of the frame 21 is vertically provided with a bearing sleeve 236 on the left and right sides of the second electric cylinder 231;

[0194] Each bearing sleeve 236 is provided with an optical axis 235 vertically penetrating therein;

[0195] The lower end of each optical axis 235 is fixedly connected to the left and right ends of the top of the connecting plate 233 .

[0196] It should be noted that the multiple wiper ear assemblies 234 installed below the connecting plate 233 are arranged in a linear array. The optical axis 235 and the bearing sleeve 236 are installed on the left and right sides of the second electric cylinder 231, and the lower end of the optical axis 235 is fixed to the connecting plate 233 to ensure that the connecting plate 233 moves linearly.

[0197] It should be noted that the second electric cylinder 231 has functions such as adjustable constant thrust, constant speed and constant stroke, and can subsequently drive the connecting plate 233 and other components to perform stable linear reciprocating motion in the vertical direction and provide constant downward force.

[0198] For specific implementation, see Fig. 9 Each wiper ear assembly 234 includes a wheel frame 2342, a ceramic shaping roller 2343 and two studs 2344;

[0199] A ceramic shaping roller 2343 is pivotally connected (i.e., rotatably connected) to the bottom middle of the wheel frame 2342;

[0200] The front and rear ends of the wheel frame 2342 are connected to the bottom of the connecting plate 233 through a stud 2344 respectively;

[0201] The ceramic shaping roller 2343 is used to press the two pole ears 620 that have been folded and overlapped on the top of the sampling nickel strip 610 in advance, and shape and smooth the sampling nickel strip 610 and the two pole ears 620.

[0202] It should be noted that currently, the two tabs are folded in half manually (for example, using a push shovel tool with a straight front end), and then overlapped on the top of the sample nickel strip 610, so that the bottom surface of the lower tab contacts the top surface of the sample nickel strip 610. Figure 7 As shown, it shows the state when the two tabs just extend from the notches on both sides of the sampling nickel strip. At this time, they have not been folded and overlapped. After the two tabs are manually folded and overlapped up and down, the electric cylinder shaping module performs the shaping operation.

[0203] In specific implementation, stud through holes are reserved at the front and rear ends of the top of the wheel frame 2342;

[0204] The connecting column at the lower end of each stud 2344 is connected to a stud stopper 23441 after vertically penetrating a stud through hole;

[0205] The size of the stud stopper 23441 is larger than the size of the stud through hole;

[0206] The connection column and the stud through hole are clearance fit;

[0207] The upper outer wall of each stud 2344 is surrounded by a spring stopper 23442;

[0208] A spring 2341 (specifically, a spiral spring) is respectively mounted on the outer wall of each stud 2344 at a position between the spring limit block 23442 and the top of the wheel frame 2342 .

[0209] It should be noted that, in the present invention, the ceramic shaping roller 2343 is made of ceramic material, which has the advantages of sufficient hardness and smoothness, and can roll smoothly after being installed in conjunction with the wheel frame 2342. Two springs 2341 are installed above the wheel frame 2342 to provide sufficient elastic force;

[0210] In specific implementation, there are a total of 10 tab assemblies 234 installed on the connecting plate 233, and arranged in a linear array in conjunction with the tab arrangement at the top of the soft-pack power battery module 6. Ten groups of battery tabs can be shaped at the same time each time, and each group of battery tabs is composed of a positive tab and a negative tab folded and overlapped, that is, each group of battery tabs consists of 2 tabs; the device of this patent can complete the shaping operation of 40 tabs on 20 batteries with only two shaping operations. A ceramic shaping roller 2343 in each pole ear wiping assembly 234 can contact and shape two pole ears spaced laterally at the same time, press the two folded and overlapping pole ears to the top of the jumper sampling nickel sheet (i.e., the corresponding jumper sampling nickel strip on the circuit adapter board), and shape and smooth the three (i.e., the two pole ears overlapping each other and the sampling nickel strip contacting the bottom of the lower pole ear) through reciprocating motion, so that 10 pole ear wiping assemblies 234 can shape 20 pole ears on 10 batteries, and cooperate with the action of the reversing cylinder 44 in the contoured base plate 4 to switch the shaping position twice, that is, a total of 20 groups of battery pole ears can be shaped.

[0211] In the present invention, in specific implementation, a control panel 3 is provided on the side of the electric cylinder leveling mechanism 2;

[0212] The control panel 3 is respectively connected to the positioning cylinder 121 in the structural frame 1, the clamping cylinder 43 and the reversing cylinder 44 in the contoured base plate 4, and the first electric cylinder 221 and the second electric cylinder 231 in the electric cylinder leveling mechanism 2, and is used to control the working status of these devices, for example, controlling the start and stop of operation, the duration of operation, and the order of start. Specifically, the control panel 3 can control the action flow of these devices in the following operation process.

[0213] For specific implementation, see Figure 4 The control screen 3 is an intelligent control terminal (for example, a touch control screen) with programmable functions. Each mechanism performs coherent actions according to the set program and cooperates to complete the entire process of tab shaping. Among them, for the tab shaping of different types of soft-pack power battery modules 6, it can have a program memory storage function, which can realize the characteristics of rapid changeover of different types of projects and improve the changeover efficiency.

[0214] In order to more clearly understand the technical solution of the present invention, the operation process of the present invention is described below.

[0215] First, the soft-pack power battery module 6 is placed in the fixture box 5 and positioned. The rack 520 in the positioning support plate 52 passes through the gap between every two sampling nickel strips 610 in turn (because the two pole ears just extend from the notches on both sides of each sampling nickel strip at this time, it also passes through the gap between the pole ears on the opposite side of every two sampling nickel strips 610). At this time, there is a sampling nickel strip 610 and two pole ears 620 extending from the notches on both sides of the sampling nickel strip between every two racks 520, so that the pole ears beside different sampling nickel strips 610 are spaced apart in turn by the rack 520, and the positioning support plate 52 also plays the role of supporting the circuit adapter plate 61;

[0216] Then, the jig box 5 is positioned as a whole and placed in the groove positioning plate 42 of the profiling base plate 4, and the profiling base plate 4 is placed as a whole in the working position. At this time, the two clamping cylinders 43 on both sides of the jig box 5 are controlled to start to move (for example, through the control panel 3), and the jig box 5 is clamped and fixed in the groove positioning plate 42 of the profiling base plate 4. The positioning cylinder assemblies 12 on both sides of the structural frame 1 clamp and fix the profiling base plate 4 in the working position (this is the first working position);

[0217] It should be noted that, in a specific implementation, the two clamping cylinders 43 on both sides of the fixture box 5 can be controlled to start the action by clicking the start button on the controller display screen (ie, the control screen 3 ).

[0218] Then, the shaping electric cylinder module 23 on the upper part of the electric cylinder leveling mechanism 2 is controlled to start to move (for example, through the control panel 3), and the shaping module 23 starts to press down according to the constant pressure, constant speed and constant stroke set in advance, and the electrode ear assembly 234 in the shaping module 23 presses down to contact the top surface of the uppermost electrode ear of the two electrode ears that are folded and overlapped in advance at the top of the sampling nickel strip 610 on the circuit adapter board 61 (for example, the electrode ear top surface of the right half of the soft-pack power battery module 6), until it reaches the set pressing position, at which time the ceramic shaping roller 2343 maintains a constant downward pressure, and the rack 520 in the positioning support plate 52 below can play a load-bearing support role at this time;

[0219] Then, the electric cylinder transmission mechanism 22 at the lower part of the electric cylinder leveling mechanism 2 is controlled to start to move, driving the electric cylinder leveling mechanism 2 as a whole to move forward at a constant speed. At this time, the ceramic shaping roller 2343 in the pole ear wiper assembly 234 can maintain the pressing state of the module pole ear, and start the linear shaping pole ear action at a constant speed. During shaping, the ceramic shaping roller 2343 presses the overlapping and fitting position of the two pole ears and the sampling nickel strip (that is, the top surface of the uppermost pole ear) and applies force, and through reciprocating motion, after the two pole ears are shaped and smoothed, the two pole ears are flattened with the sampling nickel strip, that is, the three are shaped and smoothed, and the pole ears are transformed from the initial state of large pole ear fold gaps to a state where the pole ears are flat, fit closely with the sampling nickel strip, and the gap is reduced and disappears, thereby achieving the best preparation state for laser welding, thereby completing the shaping action at the first station;

[0220] Then, after the shaping action of the first station is completed, the shaping electric cylinder 231 on the upper part of the electric cylinder leveling mechanism 2 is lifted up and returns to the origin, and the reversing cylinder 44 in the profiling base plate 4 starts to switch to the second station, specifically: the reversing cylinder 44 drives the groove positioning plate 42 of the profiling base plate 4 and the upper soft-pack power battery module 6 to move laterally (for example, to the right) a preset distance, so as to run to the preset second station, that is, the soft-pack power battery module 6 is offset laterally as a whole by a preset distance, so that multiple wipers above the soft-pack power battery module 6 The tab assembly 234 is aligned with the unshaped tabs (for example, the tabs on the left half) on the soft-pack power battery module 6 in sequence. At this time, the tab shaping action is also performed, and the electric cylinder transmission mechanism 22 below drives the electric cylinder leveling mechanism 2 to move in the opposite direction as a whole. At this time, the ceramic shaping roller 2343 also maintains the clamping state on the module tabs, and starts the linear tab shaping action at a constant speed. When the double-station actions are all completed, each mechanism automatically resets to the origin and waits for the start of the next action. At this point, the tab shaping process of the battery module is completed.

[0221] It should be noted that for soft-pack power batteries, each battery has two protruding tabs, which are composed of thin aluminum and copper sheets respectively. According to the series and parallel arrangement designed by research and development, the two adjacent tabs need to be folded in half and overlapped together, and attached to the corresponding jumper sampling nickel sheet of the circuit adapter board. The three must be completely attached together to ensure the significant effect of laser welding. However, given that the tabs themselves are made of aluminum and copper sheets with a relatively thin thickness, the tabs are prone to collision and wrinkles during battery transportation and assembly into modules. When the two tabs and the jumper sampling nickel sheet overlap and fit, a gap will be formed. During laser welding, the gap will be directly pierced, seriously affecting the welding effect.

[0222] For this reason, for the shaping device of the present invention, the ceramic shaping roller therein can play the role of pressing and smoothing the metal sheet (i.e., the two pole ears), that is, the wrinkled surface of the metal can be shaped into a flat surface. During shaping, the two pole ears and the cross-connected sampling nickel sheet (i.e., the corresponding cross-connected sampling nickel strip on the circuit adapter board) are pressed and stressed when overlapping and fitting, and the three (i.e., the two pole ears overlapping up and down and the sampling nickel strip in contact with the bottom of the lower pole ear) are shaped and smoothed through reciprocating motion, from the initial state of large gaps between the pole ears to a state where the pole ears are flat, fit tightly, and the gap is reduced and disappears, thereby achieving the best preparation state for laser welding. That is, the shaping device of the present invention shapes and smoothes the three by pressing the two pole ears and the corresponding cross-connected sampling nickel strip on the circuit adapter board.

[0223] Therefore, based on the above technical solutions, it can be known that the present invention combines the unique adjustable constant thrust, constant speed and constant stroke of the electric cylinder, and can be set to multiple stations to coordinate constant pressure shaping actions, which can greatly improve the shaping efficiency of the power battery module pole ears, with good flatness, high precision and strong editability, which greatly solves the problem of low shaping efficiency of the power battery module pole ears and maximizes the guarantee of the subsequent laser welding effect of the battery pole ears.

[0224] In summary, compared with the prior art, the shaping device for the tabs of soft-pack power batteries provided by the present invention is scientifically designed and can perform constant pressure shaping on the tabs of soft-pack power batteries under the drive of the electric cylinder, and smooth the two tabs of the sampling nickel sheet on the circuit adapter board and the top thereof, which overlap and fold and overlap, from the initial state of the tab wrinkles with a large gap to the state of the tab being flat, tightly fitting, and the gap being reduced and disappearing, thereby achieving the best preparation state for laser welding. The present invention combines the unique adjustable constant thrust, constant speed, and constant stroke of the electric cylinder, thereby greatly improving the shaping efficiency of the tabs of the power battery module, making the tab shaping flat and high in precision, effectively solving the problem of low shaping efficiency of the tabs of the power battery module, and maximizing the guarantee of the laser welding effect of the subsequent battery tabs, which has great practical significance.

[0225] The application of the present invention helps to greatly improve the shaping efficiency and welding quality of the tabs of soft-pack power batteries.

[0226] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A shaping device for a soft-pack power battery tab, characterized in that: It comprises a structural frame (1), an electric cylinder leveling mechanism (2), a contoured base plate (4) and a jig box (5); A contoured base plate (4) is provided on the top front side of the structural frame (1); A hollow jig box (5) is provided on the top of the contoured base plate (4); A soft-pack power battery module (6) is placed in the fixture box (5); An electric cylinder leveling mechanism (2) is provided on the top rear side of the structural frame (1); An electric cylinder leveling mechanism (2) is used to perform a shaping operation on the tab (620) at the top of the soft-pack power battery module (6); A soft-pack power battery module (6), comprising a plurality of soft-pack power batteries (62) arranged in parallel in a longitudinal direction; Each soft-pack power battery (62) has a tab (620) on both the front and rear sides of the top. The tabs (620) on the top of the plurality of soft-pack power batteries (62) are connected to the circuit adapter board (61); The circuit adapter plate (61) is provided with a longitudinally distributed notch at a position corresponding to each pole ear (620) on the top of each soft-pack power battery (62) for allowing the pole ear to pass vertically; A longitudinally distributed sampling nickel strip (610) is provided on the top of the circuit adapter plate (61) at a position between any two adjacent notches; In each notch, a pole ear (620) passes vertically through; A jig box (5), comprising a contoured box body (51) and a positioning support plate (52); The contoured box body (51) has a battery module accommodating groove (50) with a front opening; A battery module receiving groove (50) for receiving a soft-pack power battery module (6); A positioning support plate (52) is provided on the top of the contoured box body (51); A positioning support plate (52), comprising a plurality of racks (520) arranged at equal intervals in the transverse direction and distributed in the longitudinal direction, as well as a first positioning support block (521) and two second positioning support blocks (522); A first positioning support block (521) is arranged on the top front side of the contoured box body (51); Two second positioning support blocks (522) are respectively arranged on the left and right sides of the top of the contoured box body (51); Two second positioning support blocks (522), which are symmetrically distributed on the left and right sides; The front and rear ends of the rack (520) are respectively connected to the rear side of the first positioning support block (521) and the top rear side of the contoured box body (51); A plurality of racks (520) located between the two second positioning support blocks (522); Each rack (520) is respectively arranged corresponding to the tab gaps of two adjacent soft-pack power batteries (62); When the soft-pack power battery module (6) is placed in the battery module accommodating groove (50), a rack (520) is inserted into the gap between the tabs of every two soft-pack power batteries (62), and the circuit adapter board (61) is located in a space surrounded by the first positioning support block (521) and the two second positioning support blocks (522); The gap between the tabs of every two soft-pack power batteries (62) corresponds to the shape and size of a rack (520); An electric cylinder leveling mechanism (2) comprises a frame (21), an electric cylinder transmission mechanism (22) and an electric cylinder shaping module (23); The bottoms of the left and right ends of the frame (21) are respectively fixedly connected to the first sliding blocks (132) of the two first linear slide rails (13) in the structural frame (1); An electric cylinder shaping module (23) is arranged at a lateral middle position of a top plate (210) of the frame (21); An electric cylinder shaping module (23) is used to shape the tabs on the top of the soft-pack power battery module (6) located directly below it; An electric cylinder transmission mechanism (22), comprising a first electric cylinder (221) and a transmission rod (222) distributed longitudinally; The output end of the first electric cylinder (221) is connected to the rear end of the transmission rod (222) via a coupling; The front end of the transmission rod (222) is connected to the middle position of the bottom rear side of the frame (21); An electric cylinder shaping module (23) comprises a second electric cylinder (231), a floating joint (232), a connecting plate (233), a lug assembly (234), an optical axis (235) and a bearing sleeve (236); The output end of the lower portion of the second electric cylinder (231) passes through a through hole reserved on the top plate (210) of the frame (21), and is connected to the middle position of the upper side of the laterally distributed connecting plate (233) through a floating joint (232); Two rows of longitudinally spaced pole lug assemblies are provided in the transverse middle portion of the lower side of the connecting plate (233); Two rows of longitudinally spaced lug assemblies, symmetrically distributed front to back; Each row of wiper ear assemblies includes a plurality of wiper ear assemblies (234) distributed at equal intervals in the transverse direction; Each tab-wiping assembly (234) is used to perform a downward pressing shaping operation on a tab on the top of a soft-pack power battery (62); A bearing sleeve (236) is vertically disposed on the top plate (210) of the frame (21) on the left and right sides of the second electric cylinder (231); An optical axis (235) is vertically disposed in each bearing sleeve (236); The lower end of each optical axis (235) is fixedly connected to the left and right ends of the top of the connecting plate (233); Each wiper ear assembly (234) includes a wheel frame (2342), a ceramic shaping roller (2343) and two studs (2344); A ceramic shaping roller (2343) is pivotally connected to the middle of the bottom of the wheel frame (2342); The front and rear ends of the wheel frame (2342) are connected to the bottom of the connecting plate (233) through a stud (2344) respectively; The ceramic shaping roller (2343) is used to press the two pole ears (620) that have been folded in half and overlapped on the top of the sampling nickel strip (610) in advance, so as to shape and smooth the sampling nickel strip (610) and the two pole ears (620).

2. The shaping device for the tab of a soft-pack power battery according to claim 1, characterized in that: A structural frame (1) comprising a structural frame base plate (11), a cylinder positioning assembly (12), a first linear slide rail (13) and a second linear slide rail (15); The structural frame bottom plate (11) is horizontally distributed; Two second linear slide rails (15) distributed longitudinally are provided on the top front side and the middle part of the structural frame bottom plate (11); Two second linear slide rails (15), which are symmetrically distributed on the left and right sides; Each second linear slide rail (15) comprises a second guide rail (151) and two second slide blocks (152) distributed longitudinally; The second sliding block (152) is slidably connected to the top of the second guide rail (151); A contoured base plate (4) is provided on the second slide blocks (152) of the two second linear slide rails (15); Two first linear slide rails (13) distributed longitudinally are arranged on the top rear side of the structural frame bottom plate (11); Each first linear slide rail (13) comprises a first guide rail (131) and two first sliding blocks (132) distributed longitudinally; The first sliding block (132) is slidably connected to the top of the first guide rail (131); Two first linear slide rails (13), which are symmetrically distributed on the left and right sides; Two first linear slide rails (13) are located outside the rear ends of the two second linear slide rails (15); An electric cylinder leveling mechanism (2) is provided on the first slide blocks (132) of the two first linear slide rails (13); A cylinder positioning assembly (12) is respectively provided on the left and right sides of the front ends of the two second linear slide rails (15); Two cylinder positioning components (12), which are symmetrically distributed on the left and right sides; Each cylinder positioning assembly (12) comprises a positioning cylinder (121) and a positioning block (122); The output ends of the two positioning cylinders (121) on opposite sides are respectively connected to a positioning block (122); Two cylinder positioning assemblies (12) for clamping and fixing the contoured base plate (4) located therebetween; A laterally distributed limit block (14) is provided at the rear end of the gap between the two second linear slide rails (15); The limiting block (14) is used to prevent the contoured base plate (4) from continuing to move backwards when it contacts the contoured base plate (4).

3. The shaping device for the tab of a soft-pack power battery according to claim 1, characterized in that: A contoured base plate (4), comprising a contoured base bottom plate (41), a groove positioning plate (42), a clamping cylinder (43), a reversing cylinder (44) and a third linear guide rail assembly (45); A third linear guide rail assembly (45) is arranged in a transversely distributed manner in the middle of the contoured base bottom plate (41); A third linear guide rail assembly (45), comprising a third guide rail (specifically a linear guide rail) and two third sliding blocks distributed laterally; The third sliding block is slidably connected with the top of the third guide rail; The two third slide blocks are provided with horizontally distributed groove positioning plates (42) to facilitate subsequent lateral movement; A fixture box positioning groove (420) is provided on the top of the groove positioning plate (42); The jig box (5) is arranged in the jig box positioning groove (420); A clamping cylinder (43) is provided on the left and right sides of the groove positioning plate (42); Two clamping cylinders (43), which are symmetrically distributed on the left and right; Output ends of the two clamping cylinders (43) on opposite sides are respectively connected to a clamping block (430); The two clamping cylinders (43) are used to clamp and fix the fixture box (5) located therebetween.

4. The shaping device for the tab of a soft-pack power battery according to claim 3, characterized in that: A handle (16) is provided at the front end of the contoured base bottom plate (41); A transversely distributed reversing cylinder (44) is provided at the front end of the contoured base bottom plate (41); The output end on the left side of the reversing cylinder (44) is connected to the front side of the groove positioning plate (42) through a reversing cylinder connecting block (440); A longitudinally distributed reversing limit block (47) is also provided on the left and right sides of the front end of the contoured base bottom plate (41).

5. The shaping device for the tab of a soft-pack power battery according to claim 1, characterized in that: Stud through holes are reserved at the front and rear ends of the top of the wheel frame (2342); The connecting column at the lower end of each stud (2344) is connected to a stud stopper (23441) after vertically penetrating a stud through hole; The size of the stud stopper (23441) is larger than the size of the stud through hole; The connection column and the stud through hole are clearance fit; The upper outer wall of each stud (2344) is surrounded by a spring stopper (23442); A spring (2341) is respectively sleeved on the outer wall of each stud (2344) at a position between the spring stop block (23442) and the top of the wheel frame (2342).

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